1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * thinkpad_acpi.c - ThinkPad ACPI Extras
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
7 */
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #define TPACPI_VERSION "0.26"
12 #define TPACPI_SYSFS_VERSION 0x030000
13
14 /*
15 * Changelog:
16 * 2007-10-20 changelog trimmed down
17 *
18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
19 * drivers/misc.
20 *
21 * 2006-11-22 0.13 new maintainer
22 * changelog now lives in git commit history, and will
23 * not be updated further in-file.
24 *
25 * 2005-03-17 0.11 support for 600e, 770x
26 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
27 *
28 * 2005-01-16 0.9 use MODULE_VERSION
29 * thanks to Henrik Brix Andersen <brix@gentoo.org>
30 * fix parameter passing on module loading
31 * thanks to Rusty Russell <rusty@rustcorp.com.au>
32 * thanks to Jim Radford <radford@blackbean.org>
33 * 2004-11-08 0.8 fix init error case, don't return from a macro
34 * thanks to Chris Wright <chrisw@osdl.org>
35 */
36
37 #include <linux/acpi.h>
38 #include <linux/backlight.h>
39 #include <linux/bitops.h>
40 #include <linux/delay.h>
41 #include <linux/dmi.h>
42 #include <linux/fb.h>
43 #include <linux/freezer.h>
44 #include <linux/hwmon.h>
45 #include <linux/hwmon-sysfs.h>
46 #include <linux/init.h>
47 #include <linux/input.h>
48 #include <linux/input/sparse-keymap.h>
49 #include <linux/jiffies.h>
50 #include <linux/kernel.h>
51 #include <linux/kthread.h>
52 #include <linux/leds.h>
53 #include <linux/list.h>
54 #include <linux/lockdep.h>
55 #include <linux/module.h>
56 #include <linux/mutex.h>
57 #include <linux/nvram.h>
58 #include <linux/pci.h>
59 #include <linux/platform_device.h>
60 #include <linux/platform_profile.h>
61 #include <linux/power_supply.h>
62 #include <linux/proc_fs.h>
63 #include <linux/rfkill.h>
64 #include <linux/sched.h>
65 #include <linux/sched/signal.h>
66 #include <linux/seq_file.h>
67 #include <linux/slab.h>
68 #include <linux/string.h>
69 #include <linux/string_helpers.h>
70 #include <linux/sysfs.h>
71 #include <linux/types.h>
72 #include <linux/uaccess.h>
73 #include <linux/units.h>
74 #include <linux/workqueue.h>
75
76 #include <acpi/battery.h>
77 #include <acpi/video.h>
78
79 #include <drm/drm_privacy_screen_driver.h>
80
81 #include <sound/control.h>
82 #include <sound/core.h>
83 #include <sound/initval.h>
84
85 #include "dual_accel_detect.h"
86
87 /* ThinkPad CMOS commands */
88 #define TP_CMOS_VOLUME_DOWN 0
89 #define TP_CMOS_VOLUME_UP 1
90 #define TP_CMOS_VOLUME_MUTE 2
91 #define TP_CMOS_BRIGHTNESS_UP 4
92 #define TP_CMOS_BRIGHTNESS_DOWN 5
93 #define TP_CMOS_THINKLIGHT_ON 12
94 #define TP_CMOS_THINKLIGHT_OFF 13
95
96 /* NVRAM Addresses */
97 enum tp_nvram_addr {
98 TP_NVRAM_ADDR_HK2 = 0x57,
99 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
100 TP_NVRAM_ADDR_VIDEO = 0x59,
101 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
102 TP_NVRAM_ADDR_MIXER = 0x60,
103 };
104
105 /* NVRAM bit masks */
106 enum {
107 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
108 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
109 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
110 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
111 TP_NVRAM_MASK_THINKLIGHT = 0x10,
112 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
113 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
114 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
115 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
116 TP_NVRAM_MASK_MUTE = 0x40,
117 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
118 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
119 TP_NVRAM_POS_LEVEL_VOLUME = 0,
120 };
121
122 /* Misc NVRAM-related */
123 enum {
124 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
125 };
126
127 /* ACPI HIDs */
128 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
129 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
130 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
131 #define TPACPI_ACPI_EC_HID "PNP0C09"
132
133 /* Input IDs */
134 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
135 #define TPACPI_HKEY_INPUT_VERSION 0x4101
136
137 /* ACPI \WGSV commands */
138 enum {
139 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
140 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
141 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
142 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
143 };
144
145 /* TP_ACPI_WGSV_GET_STATE bits */
146 enum {
147 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
148 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
149 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
150 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
151 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
152 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
153 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
154 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
155 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
156 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
157 };
158
159 /* HKEY events */
160 enum tpacpi_hkey_event_t {
161 /* Original hotkeys */
162 TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */
163 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
164 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
165 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
166 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
167 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
168 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
169 TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */
170
171 /* Adaptive keyboard (2014 X1 Carbon) */
172 TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */
173 TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */
174 TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */
175 TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */
176
177 /* Extended hotkey events in 2017+ models */
178 TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */
179 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
180 TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using
181 * hkey -> scancode translation for
182 * compat. Later codes are entered
183 * directly in the sparse-keymap.
184 */
185 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */
186 TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */
187 TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */
188 TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */
189
190 /* Reasons for waking up from S3/S4 */
191 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
192 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
193 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
194 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
195 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
196 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
197
198 /* Auto-sleep after eject request */
199 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
200 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
201
202 /* Misc bay events */
203 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
204 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
205 or port replicator */
206 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
207 dock or port replicator */
208 /*
209 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013
210 * when keyboard cover is attached, detached or folded onto the back
211 */
212 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */
213 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */
214
215 /* User-interface events */
216 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
217 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
218 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
219 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
220 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
221 * enter/leave tablet mode
222 */
223 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
224 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
225 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
226
227 /* Key-related user-interface events */
228 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
229 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
230 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
231
232 /* Thermal events */
233 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
234 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
235 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
236 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
237 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
238 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
239 * command completed. Related to
240 * AML DYTC */
241 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
242 * changed. Related to AML GMTS */
243
244 /* AC-related events */
245 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
246
247 /* Further user-interface events */
248 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
249 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
250
251 /* Misc */
252 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
253
254 /* Misc2 */
255 TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */
256 };
257
258 /****************************************************************************
259 * Main driver
260 */
261
262 #define TPACPI_NAME "thinkpad"
263 #define TPACPI_DESC "ThinkPad ACPI Extras"
264 #define TPACPI_FILE TPACPI_NAME "_acpi"
265 #define TPACPI_URL "http://ibm-acpi.sf.net/"
266 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
267
268 #define TPACPI_PROC_DIR "ibm"
269 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
270 #define TPACPI_DRVR_NAME TPACPI_FILE
271 #define TPACPI_DRVR_SHORTNAME "tpacpi"
272 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
273
274 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
275 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
276
277 #define TPACPI_MAX_ACPI_ARGS 3
278
279 /* Debugging printk groups */
280 #define TPACPI_DBG_ALL 0xffff
281 #define TPACPI_DBG_DISCLOSETASK 0x8000
282 #define TPACPI_DBG_INIT 0x0001
283 #define TPACPI_DBG_EXIT 0x0002
284 #define TPACPI_DBG_RFKILL 0x0004
285 #define TPACPI_DBG_HKEY 0x0008
286 #define TPACPI_DBG_FAN 0x0010
287 #define TPACPI_DBG_BRGHT 0x0020
288 #define TPACPI_DBG_MIXER 0x0040
289
290 #define FAN_NOT_PRESENT 65535
291
292 /****************************************************************************
293 * Driver-wide structs and misc. variables
294 */
295
296 struct ibm_struct;
297
298 struct tp_acpi_drv_struct {
299 const struct acpi_device_id *hid;
300 struct acpi_driver *driver;
301
302 void (*notify) (struct ibm_struct *, u32);
303 acpi_handle *handle;
304 u32 type;
305 struct acpi_device *device;
306 };
307
308 struct ibm_struct {
309 char *name;
310
311 int (*read) (struct seq_file *);
312 int (*write) (char *);
313 void (*exit) (void);
314 void (*resume) (void);
315 void (*suspend) (void);
316 void (*shutdown) (void);
317
318 struct list_head all_drivers;
319
320 struct tp_acpi_drv_struct *acpi;
321
322 struct {
323 u8 acpi_driver_registered:1;
324 u8 acpi_notify_installed:1;
325 u8 proc_created:1;
326 u8 init_called:1;
327 u8 experimental:1;
328 } flags;
329 };
330
331 struct ibm_init_struct {
332 char param[32];
333
334 int (*init) (struct ibm_init_struct *);
335 umode_t base_procfs_mode;
336 struct ibm_struct *data;
337 };
338
339 /* DMI Quirks */
340 struct quirk_entry {
341 bool btusb_bug;
342 };
343
344 static struct quirk_entry quirk_btusb_bug = {
345 .btusb_bug = true,
346 };
347
348 static struct {
349 u32 bluetooth:1;
350 u32 hotkey:1;
351 u32 hotkey_mask:1;
352 u32 hotkey_wlsw:1;
353 enum {
354 TP_HOTKEY_TABLET_NONE = 0,
355 TP_HOTKEY_TABLET_USES_MHKG,
356 TP_HOTKEY_TABLET_USES_GMMS,
357 } hotkey_tablet;
358 u32 kbdlight:1;
359 u32 light:1;
360 u32 light_status:1;
361 u32 bright_acpimode:1;
362 u32 bright_unkfw:1;
363 u32 wan:1;
364 u32 uwb:1;
365 u32 fan_ctrl_status_undef:1;
366 u32 second_fan:1;
367 u32 second_fan_ctl:1;
368 u32 beep_needs_two_args:1;
369 u32 mixer_no_level_control:1;
370 u32 battery_force_primary:1;
371 u32 input_device_registered:1;
372 u32 platform_drv_registered:1;
373 u32 sensors_pdrv_registered:1;
374 u32 hotkey_poll_active:1;
375 u32 has_adaptive_kbd:1;
376 u32 kbd_lang:1;
377 u32 trackpoint_doubletap:1;
378 struct quirk_entry *quirks;
379 } tp_features;
380
381 static struct {
382 u16 hotkey_mask_ff:1;
383 u16 volume_ctrl_forbidden:1;
384 } tp_warned;
385
386 struct thinkpad_id_data {
387 unsigned int vendor; /* ThinkPad vendor:
388 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
389
390 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
391 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
392
393 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
394 u32 ec_model;
395 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
396 u16 ec_release;
397
398 char *model_str; /* ThinkPad T43 */
399 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
400 };
401 static struct thinkpad_id_data thinkpad_id;
402
403 static enum {
404 TPACPI_LIFE_INIT = 0,
405 TPACPI_LIFE_RUNNING,
406 TPACPI_LIFE_EXITING,
407 } tpacpi_lifecycle;
408
409 static int experimental;
410 static u32 dbg_level;
411
412 static struct workqueue_struct *tpacpi_wq;
413
414 enum led_status_t {
415 TPACPI_LED_OFF = 0,
416 TPACPI_LED_ON,
417 TPACPI_LED_BLINK,
418 };
419
420 /* tpacpi LED class */
421 struct tpacpi_led_classdev {
422 struct led_classdev led_classdev;
423 int led;
424 };
425
426 /* brightness level capabilities */
427 static unsigned int bright_maxlvl; /* 0 = unknown */
428
429 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
430 static int dbg_wlswemul;
431 static bool tpacpi_wlsw_emulstate;
432 static int dbg_bluetoothemul;
433 static bool tpacpi_bluetooth_emulstate;
434 static int dbg_wwanemul;
435 static bool tpacpi_wwan_emulstate;
436 static int dbg_uwbemul;
437 static bool tpacpi_uwb_emulstate;
438 #endif
439
440
441 /*************************************************************************
442 * Debugging helpers
443 */
444
445 #define dbg_printk(a_dbg_level, format, arg...) \
446 do { \
447 if (dbg_level & (a_dbg_level)) \
448 printk(KERN_DEBUG pr_fmt("%s: " format), \
449 __func__, ##arg); \
450 } while (0)
451
452 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
453 #define vdbg_printk dbg_printk
454 static const char *str_supported(int is_supported);
455 #else
str_supported(int is_supported)456 static inline const char *str_supported(int is_supported) { return ""; }
457 #define vdbg_printk(a_dbg_level, format, arg...) \
458 do { if (0) no_printk(format, ##arg); } while (0)
459 #endif
460
tpacpi_log_usertask(const char * const what)461 static void tpacpi_log_usertask(const char * const what)
462 {
463 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
464 what, task_tgid_vnr(current));
465 }
466
467 #define tpacpi_disclose_usertask(what, format, arg...) \
468 do { \
469 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
470 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
471 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
472 what, task_tgid_vnr(current), ## arg); \
473 } \
474 } while (0)
475
476 /*
477 * Quirk handling helpers
478 *
479 * ThinkPad IDs and versions seen in the field so far are
480 * two or three characters from the set [0-9A-Z], i.e. base 36.
481 *
482 * We use values well outside that range as specials.
483 */
484
485 #define TPACPI_MATCH_ANY 0xffffffffU
486 #define TPACPI_MATCH_ANY_VERSION 0xffffU
487 #define TPACPI_MATCH_UNKNOWN 0U
488
489 /* TPID('1', 'Y') == 0x3159 */
490 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
491 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
492 #define TPVER TPID
493
494 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
495 { .vendor = PCI_VENDOR_ID_IBM, \
496 .bios = TPID(__id1, __id2), \
497 .ec = TPACPI_MATCH_ANY, \
498 .quirks = (__quirk) }
499
500 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
501 { .vendor = PCI_VENDOR_ID_LENOVO, \
502 .bios = TPID(__id1, __id2), \
503 .ec = TPACPI_MATCH_ANY, \
504 .quirks = (__quirk) }
505
506 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
507 { .vendor = PCI_VENDOR_ID_LENOVO, \
508 .bios = TPID3(__id1, __id2, __id3), \
509 .ec = TPACPI_MATCH_ANY, \
510 .quirks = (__quirk) }
511
512 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \
513 { .vendor = PCI_VENDOR_ID_IBM, \
514 .bios = TPACPI_MATCH_ANY, \
515 .ec = TPID(__id1, __id2), \
516 .quirks = (__quirk) }
517
518 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
519 { .vendor = PCI_VENDOR_ID_LENOVO, \
520 .bios = TPACPI_MATCH_ANY, \
521 .ec = TPID(__id1, __id2), \
522 .quirks = (__quirk) }
523
524 struct tpacpi_quirk {
525 unsigned int vendor;
526 u32 bios;
527 u32 ec;
528 unsigned long quirks;
529 };
530
531 /**
532 * tpacpi_check_quirks() - search BIOS/EC version on a list
533 * @qlist: array of &struct tpacpi_quirk
534 * @qlist_size: number of elements in @qlist
535 *
536 * Iterates over a quirks list until one is found that matches the
537 * ThinkPad's vendor, BIOS and EC model.
538 *
539 * Returns: %0 if nothing matches, otherwise returns the quirks field of
540 * the matching &struct tpacpi_quirk entry.
541 *
542 * The match criteria is: vendor, ec and bios must match.
543 */
tpacpi_check_quirks(const struct tpacpi_quirk * qlist,unsigned int qlist_size)544 static unsigned long __init tpacpi_check_quirks(
545 const struct tpacpi_quirk *qlist,
546 unsigned int qlist_size)
547 {
548 while (qlist_size) {
549 if ((qlist->vendor == thinkpad_id.vendor ||
550 qlist->vendor == TPACPI_MATCH_ANY) &&
551 (qlist->bios == thinkpad_id.bios_model ||
552 qlist->bios == TPACPI_MATCH_ANY) &&
553 (qlist->ec == thinkpad_id.ec_model ||
554 qlist->ec == TPACPI_MATCH_ANY))
555 return qlist->quirks;
556
557 qlist_size--;
558 qlist++;
559 }
560 return 0;
561 }
562
tpacpi_is_lenovo(void)563 static inline bool __pure __init tpacpi_is_lenovo(void)
564 {
565 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
566 }
567
tpacpi_is_ibm(void)568 static inline bool __pure __init tpacpi_is_ibm(void)
569 {
570 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
571 }
572
573 /****************************************************************************
574 ****************************************************************************
575 *
576 * ACPI Helpers and device model
577 *
578 ****************************************************************************
579 ****************************************************************************/
580
581 /*************************************************************************
582 * ACPI basic handles
583 */
584
585 static acpi_handle root_handle;
586 static acpi_handle ec_handle;
587
588 #define TPACPI_HANDLE(object, parent, paths...) \
589 static acpi_handle object##_handle; \
590 static const acpi_handle * const object##_parent __initconst = \
591 &parent##_handle; \
592 static char *object##_paths[] __initdata = { paths }
593
594 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
595 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
596
597 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
598 /* T4x, X31, X40 */
599 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
600 "\\CMS", /* R40, R40e */
601 ); /* all others */
602
603 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
604 "^HKEY", /* R30, R31 */
605 "HKEY", /* all others */
606 ); /* 570 */
607
608 /*************************************************************************
609 * ACPI helpers
610 */
611
acpi_evalf(acpi_handle handle,int * res,char * method,char * fmt,...)612 static int acpi_evalf(acpi_handle handle,
613 int *res, char *method, char *fmt, ...)
614 {
615 char *fmt0 = fmt;
616 struct acpi_object_list params;
617 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
618 struct acpi_buffer result, *resultp;
619 union acpi_object out_obj;
620 acpi_status status;
621 va_list ap;
622 char res_type;
623 int success;
624 int quiet;
625
626 if (!*fmt) {
627 pr_err("acpi_evalf() called with empty format\n");
628 return 0;
629 }
630
631 if (*fmt == 'q') {
632 quiet = 1;
633 fmt++;
634 } else
635 quiet = 0;
636
637 res_type = *(fmt++);
638
639 params.count = 0;
640 params.pointer = &in_objs[0];
641
642 va_start(ap, fmt);
643 while (*fmt) {
644 char c = *(fmt++);
645 switch (c) {
646 case 'd': /* int */
647 in_objs[params.count].integer.value = va_arg(ap, int);
648 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
649 break;
650 /* add more types as needed */
651 default:
652 pr_err("acpi_evalf() called with invalid format character '%c'\n",
653 c);
654 va_end(ap);
655 return 0;
656 }
657 }
658 va_end(ap);
659
660 if (res_type != 'v') {
661 result.length = sizeof(out_obj);
662 result.pointer = &out_obj;
663 resultp = &result;
664 } else
665 resultp = NULL;
666
667 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
668
669 switch (res_type) {
670 case 'd': /* int */
671 success = (status == AE_OK &&
672 out_obj.type == ACPI_TYPE_INTEGER);
673 if (success && res)
674 *res = out_obj.integer.value;
675 break;
676 case 'v': /* void */
677 success = status == AE_OK;
678 break;
679 /* add more types as needed */
680 default:
681 pr_err("acpi_evalf() called with invalid format character '%c'\n",
682 res_type);
683 return 0;
684 }
685
686 if (!success && !quiet)
687 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
688 method, fmt0, acpi_format_exception(status));
689
690 return success;
691 }
692
acpi_ec_read(int i,u8 * p)693 static int acpi_ec_read(int i, u8 *p)
694 {
695 int v;
696
697 if (ecrd_handle) {
698 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
699 return 0;
700 *p = v;
701 } else {
702 if (ec_read(i, p) < 0)
703 return 0;
704 }
705
706 return 1;
707 }
708
acpi_ec_write(int i,u8 v)709 static int acpi_ec_write(int i, u8 v)
710 {
711 if (ecwr_handle) {
712 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
713 return 0;
714 } else {
715 if (ec_write(i, v) < 0)
716 return 0;
717 }
718
719 return 1;
720 }
721
issue_thinkpad_cmos_command(int cmos_cmd)722 static int issue_thinkpad_cmos_command(int cmos_cmd)
723 {
724 if (!cmos_handle)
725 return -ENXIO;
726
727 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
728 return -EIO;
729
730 return 0;
731 }
732
733 /*************************************************************************
734 * ACPI device model
735 */
736
737 #define TPACPI_ACPIHANDLE_INIT(object) \
738 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
739 object##_paths, ARRAY_SIZE(object##_paths))
740
drv_acpi_handle_init(const char * name,acpi_handle * handle,const acpi_handle parent,char ** paths,const int num_paths)741 static void __init drv_acpi_handle_init(const char *name,
742 acpi_handle *handle, const acpi_handle parent,
743 char **paths, const int num_paths)
744 {
745 int i;
746 acpi_status status;
747
748 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
749 name);
750
751 for (i = 0; i < num_paths; i++) {
752 status = acpi_get_handle(parent, paths[i], handle);
753 if (ACPI_SUCCESS(status)) {
754 dbg_printk(TPACPI_DBG_INIT,
755 "Found ACPI handle %s for %s\n",
756 paths[i], name);
757 return;
758 }
759 }
760
761 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
762 name);
763 *handle = NULL;
764 }
765
tpacpi_acpi_handle_locate_callback(acpi_handle handle,u32 level,void * context,void ** return_value)766 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
767 u32 level, void *context, void **return_value)
768 {
769 if (!strcmp(context, "video")) {
770 struct acpi_device *dev = acpi_fetch_acpi_dev(handle);
771
772 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
773 return AE_OK;
774 }
775
776 *(acpi_handle *)return_value = handle;
777
778 return AE_CTRL_TERMINATE;
779 }
780
tpacpi_acpi_handle_locate(const char * name,const char * hid,acpi_handle * handle)781 static void __init tpacpi_acpi_handle_locate(const char *name,
782 const char *hid,
783 acpi_handle *handle)
784 {
785 acpi_status status;
786 acpi_handle device_found;
787
788 BUG_ON(!name || !handle);
789 vdbg_printk(TPACPI_DBG_INIT,
790 "trying to locate ACPI handle for %s, using HID %s\n",
791 name, hid ? hid : "NULL");
792
793 memset(&device_found, 0, sizeof(device_found));
794 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
795 (void *)name, &device_found);
796
797 *handle = NULL;
798
799 if (ACPI_SUCCESS(status)) {
800 *handle = device_found;
801 dbg_printk(TPACPI_DBG_INIT,
802 "Found ACPI handle for %s\n", name);
803 } else {
804 vdbg_printk(TPACPI_DBG_INIT,
805 "Could not locate an ACPI handle for %s: %s\n",
806 name, acpi_format_exception(status));
807 }
808 }
809
dispatch_acpi_notify(acpi_handle handle,u32 event,void * data)810 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
811 {
812 struct ibm_struct *ibm = data;
813
814 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
815 return;
816
817 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
818 return;
819
820 ibm->acpi->notify(ibm, event);
821 }
822
setup_acpi_notify(struct ibm_struct * ibm)823 static int __init setup_acpi_notify(struct ibm_struct *ibm)
824 {
825 acpi_status status;
826
827 BUG_ON(!ibm->acpi);
828
829 if (!*ibm->acpi->handle)
830 return 0;
831
832 vdbg_printk(TPACPI_DBG_INIT,
833 "setting up ACPI notify for %s\n", ibm->name);
834
835 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle);
836 if (!ibm->acpi->device) {
837 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name);
838 return -ENODEV;
839 }
840
841 ibm->acpi->device->driver_data = ibm;
842 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
843 TPACPI_ACPI_EVENT_PREFIX,
844 ibm->name);
845
846 status = acpi_install_notify_handler(*ibm->acpi->handle,
847 ibm->acpi->type, dispatch_acpi_notify, ibm);
848 if (ACPI_FAILURE(status)) {
849 if (status == AE_ALREADY_EXISTS) {
850 pr_notice("another device driver is already handling %s events\n",
851 ibm->name);
852 } else {
853 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
854 ibm->name, acpi_format_exception(status));
855 }
856 return -ENODEV;
857 }
858 ibm->flags.acpi_notify_installed = 1;
859 return 0;
860 }
861
tpacpi_device_add(struct acpi_device * device)862 static int __init tpacpi_device_add(struct acpi_device *device)
863 {
864 return 0;
865 }
866
register_tpacpi_subdriver(struct ibm_struct * ibm)867 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
868 {
869 int rc;
870
871 dbg_printk(TPACPI_DBG_INIT,
872 "registering %s as an ACPI driver\n", ibm->name);
873
874 BUG_ON(!ibm->acpi);
875
876 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
877 if (!ibm->acpi->driver) {
878 pr_err("failed to allocate memory for ibm->acpi->driver\n");
879 return -ENOMEM;
880 }
881
882 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
883 ibm->acpi->driver->ids = ibm->acpi->hid;
884
885 ibm->acpi->driver->ops.add = &tpacpi_device_add;
886
887 rc = acpi_bus_register_driver(ibm->acpi->driver);
888 if (rc < 0) {
889 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
890 ibm->name, rc);
891 kfree(ibm->acpi->driver);
892 ibm->acpi->driver = NULL;
893 } else if (!rc)
894 ibm->flags.acpi_driver_registered = 1;
895
896 return rc;
897 }
898
899
900 /****************************************************************************
901 ****************************************************************************
902 *
903 * Procfs Helpers
904 *
905 ****************************************************************************
906 ****************************************************************************/
907
dispatch_proc_show(struct seq_file * m,void * v)908 static int dispatch_proc_show(struct seq_file *m, void *v)
909 {
910 struct ibm_struct *ibm = m->private;
911
912 if (!ibm || !ibm->read)
913 return -EINVAL;
914 return ibm->read(m);
915 }
916
dispatch_proc_open(struct inode * inode,struct file * file)917 static int dispatch_proc_open(struct inode *inode, struct file *file)
918 {
919 return single_open(file, dispatch_proc_show, pde_data(inode));
920 }
921
dispatch_proc_write(struct file * file,const char __user * userbuf,size_t count,loff_t * pos)922 static ssize_t dispatch_proc_write(struct file *file,
923 const char __user *userbuf,
924 size_t count, loff_t *pos)
925 {
926 struct ibm_struct *ibm = pde_data(file_inode(file));
927 char *kernbuf;
928 int ret;
929
930 if (!ibm || !ibm->write)
931 return -EINVAL;
932 if (count > PAGE_SIZE - 1)
933 return -EINVAL;
934
935 kernbuf = memdup_user_nul(userbuf, count);
936 if (IS_ERR(kernbuf))
937 return PTR_ERR(kernbuf);
938 ret = ibm->write(kernbuf);
939 if (ret == 0)
940 ret = count;
941
942 kfree(kernbuf);
943
944 return ret;
945 }
946
947 static const struct proc_ops dispatch_proc_ops = {
948 .proc_open = dispatch_proc_open,
949 .proc_read = seq_read,
950 .proc_lseek = seq_lseek,
951 .proc_release = single_release,
952 .proc_write = dispatch_proc_write,
953 };
954
955 /****************************************************************************
956 ****************************************************************************
957 *
958 * Device model: input, hwmon and platform
959 *
960 ****************************************************************************
961 ****************************************************************************/
962
963 static struct platform_device *tpacpi_pdev;
964 static struct platform_device *tpacpi_sensors_pdev;
965 static struct device *tpacpi_hwmon;
966 static struct device *tpacpi_pprof;
967 static struct input_dev *tpacpi_inputdev;
968 static struct mutex tpacpi_inputdev_send_mutex;
969 static LIST_HEAD(tpacpi_all_drivers);
970
971 #ifdef CONFIG_PM_SLEEP
tpacpi_suspend_handler(struct device * dev)972 static int tpacpi_suspend_handler(struct device *dev)
973 {
974 struct ibm_struct *ibm, *itmp;
975
976 list_for_each_entry_safe(ibm, itmp,
977 &tpacpi_all_drivers,
978 all_drivers) {
979 if (ibm->suspend)
980 (ibm->suspend)();
981 }
982
983 return 0;
984 }
985
tpacpi_resume_handler(struct device * dev)986 static int tpacpi_resume_handler(struct device *dev)
987 {
988 struct ibm_struct *ibm, *itmp;
989
990 list_for_each_entry_safe(ibm, itmp,
991 &tpacpi_all_drivers,
992 all_drivers) {
993 if (ibm->resume)
994 (ibm->resume)();
995 }
996
997 return 0;
998 }
999 #endif
1000
1001 static SIMPLE_DEV_PM_OPS(tpacpi_pm,
1002 tpacpi_suspend_handler, tpacpi_resume_handler);
1003
tpacpi_shutdown_handler(struct platform_device * pdev)1004 static void tpacpi_shutdown_handler(struct platform_device *pdev)
1005 {
1006 struct ibm_struct *ibm, *itmp;
1007
1008 list_for_each_entry_safe(ibm, itmp,
1009 &tpacpi_all_drivers,
1010 all_drivers) {
1011 if (ibm->shutdown)
1012 (ibm->shutdown)();
1013 }
1014 }
1015
1016 /*************************************************************************
1017 * sysfs support helpers
1018 */
1019
parse_strtoul(const char * buf,unsigned long max,unsigned long * value)1020 static int parse_strtoul(const char *buf,
1021 unsigned long max, unsigned long *value)
1022 {
1023 char *endp;
1024
1025 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1026 endp = skip_spaces(endp);
1027 if (*endp || *value > max)
1028 return -EINVAL;
1029
1030 return 0;
1031 }
1032
tpacpi_disable_brightness_delay(void)1033 static void tpacpi_disable_brightness_delay(void)
1034 {
1035 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
1036 pr_notice("ACPI backlight control delay disabled\n");
1037 }
1038
printk_deprecated_attribute(const char * const what,const char * const details)1039 static void printk_deprecated_attribute(const char * const what,
1040 const char * const details)
1041 {
1042 tpacpi_log_usertask("deprecated sysfs attribute");
1043 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
1044 what, details);
1045 }
1046
1047 /*************************************************************************
1048 * rfkill and radio control support helpers
1049 */
1050
1051 /*
1052 * ThinkPad-ACPI firmware handling model:
1053 *
1054 * WLSW (master wireless switch) is event-driven, and is common to all
1055 * firmware-controlled radios. It cannot be controlled, just monitored,
1056 * as expected. It overrides all radio state in firmware
1057 *
1058 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1059 * (TODO: verify how WLSW interacts with the returned radio state).
1060 *
1061 * The only time there are shadow radio state changes, is when
1062 * masked-off hotkeys are used.
1063 */
1064
1065 /*
1066 * Internal driver API for radio state:
1067 *
1068 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1069 * bool: true means radio blocked (off)
1070 */
1071 enum tpacpi_rfkill_state {
1072 TPACPI_RFK_RADIO_OFF = 0,
1073 TPACPI_RFK_RADIO_ON
1074 };
1075
1076 /* rfkill switches */
1077 enum tpacpi_rfk_id {
1078 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1079 TPACPI_RFK_WWAN_SW_ID,
1080 TPACPI_RFK_UWB_SW_ID,
1081 TPACPI_RFK_SW_MAX
1082 };
1083
1084 static const char *tpacpi_rfkill_names[] = {
1085 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1086 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1087 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1088 [TPACPI_RFK_SW_MAX] = NULL
1089 };
1090
1091 /* ThinkPad-ACPI rfkill subdriver */
1092 struct tpacpi_rfk {
1093 struct rfkill *rfkill;
1094 enum tpacpi_rfk_id id;
1095 const struct tpacpi_rfk_ops *ops;
1096 };
1097
1098 struct tpacpi_rfk_ops {
1099 /* firmware interface */
1100 int (*get_status)(void);
1101 int (*set_status)(const enum tpacpi_rfkill_state);
1102 };
1103
1104 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1105
1106 /* Query FW and update rfkill sw state for a given rfkill switch */
tpacpi_rfk_update_swstate(const struct tpacpi_rfk * tp_rfk)1107 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1108 {
1109 int status;
1110
1111 if (!tp_rfk)
1112 return -ENODEV;
1113
1114 status = (tp_rfk->ops->get_status)();
1115 if (status < 0)
1116 return status;
1117
1118 rfkill_set_sw_state(tp_rfk->rfkill,
1119 (status == TPACPI_RFK_RADIO_OFF));
1120
1121 return status;
1122 }
1123
1124 /*
1125 * Sync the HW-blocking state of all rfkill switches,
1126 * do notice it causes the rfkill core to schedule uevents
1127 */
tpacpi_rfk_update_hwblock_state(bool blocked)1128 static void tpacpi_rfk_update_hwblock_state(bool blocked)
1129 {
1130 unsigned int i;
1131 struct tpacpi_rfk *tp_rfk;
1132
1133 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1134 tp_rfk = tpacpi_rfkill_switches[i];
1135 if (tp_rfk) {
1136 if (rfkill_set_hw_state(tp_rfk->rfkill,
1137 blocked)) {
1138 /* ignore -- we track sw block */
1139 }
1140 }
1141 }
1142 }
1143
1144 /* Call to get the WLSW state from the firmware */
1145 static int hotkey_get_wlsw(void);
1146
1147 /* Call to query WLSW state and update all rfkill switches */
tpacpi_rfk_check_hwblock_state(void)1148 static bool tpacpi_rfk_check_hwblock_state(void)
1149 {
1150 int res = hotkey_get_wlsw();
1151 int hw_blocked;
1152
1153 /* When unknown or unsupported, we have to assume it is unblocked */
1154 if (res < 0)
1155 return false;
1156
1157 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1158 tpacpi_rfk_update_hwblock_state(hw_blocked);
1159
1160 return hw_blocked;
1161 }
1162
tpacpi_rfk_hook_set_block(void * data,bool blocked)1163 static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1164 {
1165 struct tpacpi_rfk *tp_rfk = data;
1166 int res;
1167
1168 dbg_printk(TPACPI_DBG_RFKILL,
1169 "request to change radio state to %s\n",
1170 blocked ? "blocked" : "unblocked");
1171
1172 /* try to set radio state */
1173 res = (tp_rfk->ops->set_status)(blocked ?
1174 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1175
1176 /* and update the rfkill core with whatever the FW really did */
1177 tpacpi_rfk_update_swstate(tp_rfk);
1178
1179 return (res < 0) ? res : 0;
1180 }
1181
1182 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1183 .set_block = tpacpi_rfk_hook_set_block,
1184 };
1185
tpacpi_new_rfkill(const enum tpacpi_rfk_id id,const struct tpacpi_rfk_ops * tp_rfkops,const enum rfkill_type rfktype,const char * name,const bool set_default)1186 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1187 const struct tpacpi_rfk_ops *tp_rfkops,
1188 const enum rfkill_type rfktype,
1189 const char *name,
1190 const bool set_default)
1191 {
1192 struct tpacpi_rfk *atp_rfk;
1193 int res;
1194 bool sw_state = false;
1195 bool hw_state;
1196 int sw_status;
1197
1198 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1199
1200 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1201 if (atp_rfk)
1202 atp_rfk->rfkill = rfkill_alloc(name,
1203 &tpacpi_pdev->dev,
1204 rfktype,
1205 &tpacpi_rfk_rfkill_ops,
1206 atp_rfk);
1207 if (!atp_rfk || !atp_rfk->rfkill) {
1208 pr_err("failed to allocate memory for rfkill class\n");
1209 kfree(atp_rfk);
1210 return -ENOMEM;
1211 }
1212
1213 atp_rfk->id = id;
1214 atp_rfk->ops = tp_rfkops;
1215
1216 sw_status = (tp_rfkops->get_status)();
1217 if (sw_status < 0) {
1218 pr_err("failed to read initial state for %s, error %d\n",
1219 name, sw_status);
1220 } else {
1221 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
1222 if (set_default) {
1223 /* try to keep the initial state, since we ask the
1224 * firmware to preserve it across S5 in NVRAM */
1225 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
1226 }
1227 }
1228 hw_state = tpacpi_rfk_check_hwblock_state();
1229 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
1230
1231 res = rfkill_register(atp_rfk->rfkill);
1232 if (res < 0) {
1233 pr_err("failed to register %s rfkill switch: %d\n", name, res);
1234 rfkill_destroy(atp_rfk->rfkill);
1235 kfree(atp_rfk);
1236 return res;
1237 }
1238
1239 tpacpi_rfkill_switches[id] = atp_rfk;
1240
1241 pr_info("rfkill switch %s: radio is %sblocked\n",
1242 name, (sw_state || hw_state) ? "" : "un");
1243 return 0;
1244 }
1245
tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)1246 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
1247 {
1248 struct tpacpi_rfk *tp_rfk;
1249
1250 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1251
1252 tp_rfk = tpacpi_rfkill_switches[id];
1253 if (tp_rfk) {
1254 rfkill_unregister(tp_rfk->rfkill);
1255 rfkill_destroy(tp_rfk->rfkill);
1256 tpacpi_rfkill_switches[id] = NULL;
1257 kfree(tp_rfk);
1258 }
1259 }
1260
printk_deprecated_rfkill_attribute(const char * const what)1261 static void printk_deprecated_rfkill_attribute(const char * const what)
1262 {
1263 printk_deprecated_attribute(what,
1264 "Please switch to generic rfkill before year 2010");
1265 }
1266
1267 /* sysfs <radio> enable ------------------------------------------------ */
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,struct device_attribute * attr,char * buf)1268 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1269 struct device_attribute *attr,
1270 char *buf)
1271 {
1272 int status;
1273
1274 printk_deprecated_rfkill_attribute(attr->attr.name);
1275
1276 /* This is in the ABI... */
1277 if (tpacpi_rfk_check_hwblock_state()) {
1278 status = TPACPI_RFK_RADIO_OFF;
1279 } else {
1280 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1281 if (status < 0)
1282 return status;
1283 }
1284
1285 return sysfs_emit(buf, "%d\n",
1286 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1287 }
1288
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,struct device_attribute * attr,const char * buf,size_t count)1289 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1290 struct device_attribute *attr,
1291 const char *buf, size_t count)
1292 {
1293 unsigned long t;
1294 int res;
1295
1296 printk_deprecated_rfkill_attribute(attr->attr.name);
1297
1298 if (parse_strtoul(buf, 1, &t))
1299 return -EINVAL;
1300
1301 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1302
1303 /* This is in the ABI... */
1304 if (tpacpi_rfk_check_hwblock_state() && !!t)
1305 return -EPERM;
1306
1307 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1308 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1309 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1310
1311 return (res < 0) ? res : count;
1312 }
1313
1314 /* procfs -------------------------------------------------------------- */
tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id,struct seq_file * m)1315 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
1316 {
1317 if (id >= TPACPI_RFK_SW_MAX)
1318 seq_printf(m, "status:\t\tnot supported\n");
1319 else {
1320 int status;
1321
1322 /* This is in the ABI... */
1323 if (tpacpi_rfk_check_hwblock_state()) {
1324 status = TPACPI_RFK_RADIO_OFF;
1325 } else {
1326 status = tpacpi_rfk_update_swstate(
1327 tpacpi_rfkill_switches[id]);
1328 if (status < 0)
1329 return status;
1330 }
1331
1332 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON));
1333 seq_printf(m, "commands:\tenable, disable\n");
1334 }
1335
1336 return 0;
1337 }
1338
tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id,char * buf)1339 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1340 {
1341 char *cmd;
1342 int status = -1;
1343 int res = 0;
1344
1345 if (id >= TPACPI_RFK_SW_MAX)
1346 return -ENODEV;
1347
1348 while ((cmd = strsep(&buf, ","))) {
1349 if (strstarts(cmd, "enable"))
1350 status = TPACPI_RFK_RADIO_ON;
1351 else if (strstarts(cmd, "disable"))
1352 status = TPACPI_RFK_RADIO_OFF;
1353 else
1354 return -EINVAL;
1355 }
1356
1357 if (status != -1) {
1358 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1359 str_enable_disable(status == TPACPI_RFK_RADIO_ON),
1360 tpacpi_rfkill_names[id]);
1361 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1362 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1363 }
1364
1365 return res;
1366 }
1367
1368 /*************************************************************************
1369 * thinkpad-acpi driver attributes
1370 */
1371
1372 /* interface_version --------------------------------------------------- */
interface_version_show(struct device_driver * drv,char * buf)1373 static ssize_t interface_version_show(struct device_driver *drv, char *buf)
1374 {
1375 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION);
1376 }
1377 static DRIVER_ATTR_RO(interface_version);
1378
1379 /* debug_level --------------------------------------------------------- */
debug_level_show(struct device_driver * drv,char * buf)1380 static ssize_t debug_level_show(struct device_driver *drv, char *buf)
1381 {
1382 return sysfs_emit(buf, "0x%04x\n", dbg_level);
1383 }
1384
debug_level_store(struct device_driver * drv,const char * buf,size_t count)1385 static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
1386 size_t count)
1387 {
1388 unsigned long t;
1389
1390 if (parse_strtoul(buf, 0xffff, &t))
1391 return -EINVAL;
1392
1393 dbg_level = t;
1394
1395 return count;
1396 }
1397 static DRIVER_ATTR_RW(debug_level);
1398
1399 /* version ------------------------------------------------------------- */
version_show(struct device_driver * drv,char * buf)1400 static ssize_t version_show(struct device_driver *drv, char *buf)
1401 {
1402 return sysfs_emit(buf, "%s v%s\n",
1403 TPACPI_DESC, TPACPI_VERSION);
1404 }
1405 static DRIVER_ATTR_RO(version);
1406
1407 /* --------------------------------------------------------------------- */
1408
1409 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1410
1411 /* wlsw_emulstate ------------------------------------------------------ */
wlsw_emulstate_show(struct device_driver * drv,char * buf)1412 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
1413 {
1414 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate);
1415 }
1416
wlsw_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1417 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
1418 size_t count)
1419 {
1420 unsigned long t;
1421
1422 if (parse_strtoul(buf, 1, &t))
1423 return -EINVAL;
1424
1425 if (tpacpi_wlsw_emulstate != !!t) {
1426 tpacpi_wlsw_emulstate = !!t;
1427 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1428 }
1429
1430 return count;
1431 }
1432 static DRIVER_ATTR_RW(wlsw_emulstate);
1433
1434 /* bluetooth_emulstate ------------------------------------------------- */
bluetooth_emulstate_show(struct device_driver * drv,char * buf)1435 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
1436 {
1437 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate);
1438 }
1439
bluetooth_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1440 static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
1441 const char *buf, size_t count)
1442 {
1443 unsigned long t;
1444
1445 if (parse_strtoul(buf, 1, &t))
1446 return -EINVAL;
1447
1448 tpacpi_bluetooth_emulstate = !!t;
1449
1450 return count;
1451 }
1452 static DRIVER_ATTR_RW(bluetooth_emulstate);
1453
1454 /* wwan_emulstate ------------------------------------------------- */
wwan_emulstate_show(struct device_driver * drv,char * buf)1455 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
1456 {
1457 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate);
1458 }
1459
wwan_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1460 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
1461 size_t count)
1462 {
1463 unsigned long t;
1464
1465 if (parse_strtoul(buf, 1, &t))
1466 return -EINVAL;
1467
1468 tpacpi_wwan_emulstate = !!t;
1469
1470 return count;
1471 }
1472 static DRIVER_ATTR_RW(wwan_emulstate);
1473
1474 /* uwb_emulstate ------------------------------------------------- */
uwb_emulstate_show(struct device_driver * drv,char * buf)1475 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
1476 {
1477 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate);
1478 }
1479
uwb_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1480 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
1481 size_t count)
1482 {
1483 unsigned long t;
1484
1485 if (parse_strtoul(buf, 1, &t))
1486 return -EINVAL;
1487
1488 tpacpi_uwb_emulstate = !!t;
1489
1490 return count;
1491 }
1492 static DRIVER_ATTR_RW(uwb_emulstate);
1493 #endif
1494
1495 /*************************************************************************
1496 * Firmware Data
1497 */
1498
1499 /*
1500 * Table of recommended minimum BIOS versions
1501 *
1502 * Reasons for listing:
1503 * 1. Stable BIOS, listed because the unknown amount of
1504 * bugs and bad ACPI behaviour on older versions
1505 *
1506 * 2. BIOS or EC fw with known bugs that trigger on Linux
1507 *
1508 * 3. BIOS with known reduced functionality in older versions
1509 *
1510 * We recommend the latest BIOS and EC version.
1511 * We only support the latest BIOS and EC fw version as a rule.
1512 *
1513 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1514 * Information from users in ThinkWiki
1515 *
1516 * WARNING: we use this table also to detect that the machine is
1517 * a ThinkPad in some cases, so don't remove entries lightly.
1518 */
1519
1520 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1521 { .vendor = (__v), \
1522 .bios = TPID(__id1, __id2), \
1523 .ec = TPACPI_MATCH_ANY, \
1524 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
1525 | TPVER(__bv1, __bv2) }
1526
1527 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1528 __eid, __ev1, __ev2) \
1529 { .vendor = (__v), \
1530 .bios = TPID(__bid1, __bid2), \
1531 .ec = __eid, \
1532 .quirks = TPVER(__ev1, __ev2) << 16 \
1533 | TPVER(__bv1, __bv2) }
1534
1535 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1536 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1537
1538 /* Outdated IBM BIOSes often lack the EC id string */
1539 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1540 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1541 __bv1, __bv2, TPID(__id1, __id2), \
1542 __ev1, __ev2), \
1543 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1544 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1545 __ev1, __ev2)
1546
1547 /* Outdated IBM BIOSes often lack the EC id string */
1548 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1549 __eid1, __eid2, __ev1, __ev2) \
1550 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1551 __bv1, __bv2, TPID(__eid1, __eid2), \
1552 __ev1, __ev2), \
1553 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1554 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1555 __ev1, __ev2)
1556
1557 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1558 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1559
1560 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1561 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1562 __bv1, __bv2, TPID(__id1, __id2), \
1563 __ev1, __ev2)
1564
1565 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1566 __eid1, __eid2, __ev1, __ev2) \
1567 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1568 __bv1, __bv2, TPID(__eid1, __eid2), \
1569 __ev1, __ev2)
1570
1571 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1572 /* Numeric models ------------------ */
1573 /* FW MODEL BIOS VERS */
1574 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1575 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1576 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1577 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1578 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1579 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1580 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1581 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1582 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1583
1584 /* A-series ------------------------- */
1585 /* FW MODEL BIOS VERS EC VERS */
1586 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1587 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1588 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1589 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1590 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1591 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1592 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1593 TPV_QI0('1', '3', '2', '0'), /* A22m */
1594 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1595 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1596 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1597
1598 /* G-series ------------------------- */
1599 /* FW MODEL BIOS VERS */
1600 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1601 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1602
1603 /* R-series, T-series --------------- */
1604 /* FW MODEL BIOS VERS EC VERS */
1605 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1606 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1607 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1608 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1609 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1610 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1611 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1612 T40/p, T41/p, T42/p (1) */
1613 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1614 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1615 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1616 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1617
1618 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1619 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1620 TPV_QI0('1', '6', '3', '2'), /* T22 */
1621 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1622 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1623 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1624
1625 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1626 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1627 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1628
1629 /* BIOS FW BIOS VERS EC FW EC VERS */
1630 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1631 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1632
1633 /* X-series ------------------------- */
1634 /* FW MODEL BIOS VERS EC VERS */
1635 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1636 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1637 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1638 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1639 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1640 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1641 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1642
1643 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1644 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1645
1646 /* (0) - older versions lack DMI EC fw string and functionality */
1647 /* (1) - older versions known to lack functionality */
1648 };
1649
1650 #undef TPV_QL1
1651 #undef TPV_QL0
1652 #undef TPV_QI2
1653 #undef TPV_QI1
1654 #undef TPV_QI0
1655 #undef TPV_Q_X
1656 #undef TPV_Q
1657
tpacpi_check_outdated_fw(void)1658 static void __init tpacpi_check_outdated_fw(void)
1659 {
1660 unsigned long fwvers;
1661 u16 ec_version, bios_version;
1662
1663 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1664 ARRAY_SIZE(tpacpi_bios_version_qtable));
1665
1666 if (!fwvers)
1667 return;
1668
1669 bios_version = fwvers & 0xffffU;
1670 ec_version = (fwvers >> 16) & 0xffffU;
1671
1672 /* note that unknown versions are set to 0x0000 and we use that */
1673 if ((bios_version > thinkpad_id.bios_release) ||
1674 (ec_version > thinkpad_id.ec_release &&
1675 ec_version != TPACPI_MATCH_ANY_VERSION)) {
1676 /*
1677 * The changelogs would let us track down the exact
1678 * reason, but it is just too much of a pain to track
1679 * it. We only list BIOSes that are either really
1680 * broken, or really stable to begin with, so it is
1681 * best if the user upgrades the firmware anyway.
1682 */
1683 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1684 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
1685 }
1686 }
1687
tpacpi_is_fw_known(void)1688 static bool __init tpacpi_is_fw_known(void)
1689 {
1690 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1691 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1692 }
1693
1694 /****************************************************************************
1695 ****************************************************************************
1696 *
1697 * Subdrivers
1698 *
1699 ****************************************************************************
1700 ****************************************************************************/
1701
1702 /*************************************************************************
1703 * thinkpad-acpi metadata subdriver
1704 */
1705
thinkpad_acpi_driver_read(struct seq_file * m)1706 static int thinkpad_acpi_driver_read(struct seq_file *m)
1707 {
1708 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1709 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1710 return 0;
1711 }
1712
1713 static struct ibm_struct thinkpad_acpi_driver_data = {
1714 .name = "driver",
1715 .read = thinkpad_acpi_driver_read,
1716 };
1717
1718 /*************************************************************************
1719 * Hotkey subdriver
1720 */
1721
1722 /*
1723 * ThinkPad firmware event model
1724 *
1725 * The ThinkPad firmware has two main event interfaces: normal ACPI
1726 * notifications (which follow the ACPI standard), and a private event
1727 * interface.
1728 *
1729 * The private event interface also issues events for the hotkeys. As
1730 * the driver gained features, the event handling code ended up being
1731 * built around the hotkey subdriver. This will need to be refactored
1732 * to a more formal event API eventually.
1733 *
1734 * Some "hotkeys" are actually supposed to be used as event reports,
1735 * such as "brightness has changed", "volume has changed", depending on
1736 * the ThinkPad model and how the firmware is operating.
1737 *
1738 * Unlike other classes, hotkey-class events have mask/unmask control on
1739 * non-ancient firmware. However, how it behaves changes a lot with the
1740 * firmware model and version.
1741 */
1742
1743 enum { /* hot key scan codes (derived from ACPI DSDT) */
1744 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1745 TP_ACPI_HOTKEYSCAN_FNF2,
1746 TP_ACPI_HOTKEYSCAN_FNF3,
1747 TP_ACPI_HOTKEYSCAN_FNF4,
1748 TP_ACPI_HOTKEYSCAN_FNF5,
1749 TP_ACPI_HOTKEYSCAN_FNF6,
1750 TP_ACPI_HOTKEYSCAN_FNF7,
1751 TP_ACPI_HOTKEYSCAN_FNF8,
1752 TP_ACPI_HOTKEYSCAN_FNF9,
1753 TP_ACPI_HOTKEYSCAN_FNF10,
1754 TP_ACPI_HOTKEYSCAN_FNF11,
1755 TP_ACPI_HOTKEYSCAN_FNF12,
1756 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1757 TP_ACPI_HOTKEYSCAN_FNINSERT,
1758 TP_ACPI_HOTKEYSCAN_FNDELETE,
1759 TP_ACPI_HOTKEYSCAN_FNHOME,
1760 TP_ACPI_HOTKEYSCAN_FNEND,
1761 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1762 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1763 TP_ACPI_HOTKEYSCAN_FNSPACE,
1764 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1765 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1766 TP_ACPI_HOTKEYSCAN_MUTE,
1767 TP_ACPI_HOTKEYSCAN_THINKPAD,
1768 TP_ACPI_HOTKEYSCAN_UNK1,
1769 TP_ACPI_HOTKEYSCAN_UNK2,
1770 TP_ACPI_HOTKEYSCAN_MICMUTE,
1771 TP_ACPI_HOTKEYSCAN_UNK4,
1772 TP_ACPI_HOTKEYSCAN_CONFIG,
1773 TP_ACPI_HOTKEYSCAN_SEARCH,
1774 TP_ACPI_HOTKEYSCAN_SCALE,
1775 TP_ACPI_HOTKEYSCAN_FILE,
1776
1777 /* Adaptive keyboard keycodes */
1778 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */
1779 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
1780 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
1781 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
1782 TP_ACPI_HOTKEYSCAN_CLOUD,
1783 TP_ACPI_HOTKEYSCAN_UNK9,
1784 TP_ACPI_HOTKEYSCAN_VOICE,
1785 TP_ACPI_HOTKEYSCAN_UNK10,
1786 TP_ACPI_HOTKEYSCAN_GESTURES,
1787 TP_ACPI_HOTKEYSCAN_UNK11,
1788 TP_ACPI_HOTKEYSCAN_UNK12,
1789 TP_ACPI_HOTKEYSCAN_UNK13,
1790 TP_ACPI_HOTKEYSCAN_CONFIG2,
1791 TP_ACPI_HOTKEYSCAN_NEW_TAB,
1792 TP_ACPI_HOTKEYSCAN_RELOAD,
1793 TP_ACPI_HOTKEYSCAN_BACK,
1794 TP_ACPI_HOTKEYSCAN_MIC_DOWN,
1795 TP_ACPI_HOTKEYSCAN_MIC_UP,
1796 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
1797 TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
1798 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
1799
1800 /* Lenovo extended keymap, starting at 0x1300 */
1801 TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */
1802 /* first new observed key (star, favorites) is 0x1311 */
1803 TP_ACPI_HOTKEYSCAN_STAR = 69,
1804 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
1805 TP_ACPI_HOTKEYSCAN_CALCULATOR,
1806 TP_ACPI_HOTKEYSCAN_BLUETOOTH,
1807 TP_ACPI_HOTKEYSCAN_KEYBOARD,
1808 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
1809 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
1810 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
1811 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
1812 };
1813
1814 enum { /* Keys/events available through NVRAM polling */
1815 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1816 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1817 };
1818
1819 enum { /* Positions of some of the keys in hotkey masks */
1820 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1821 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1822 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1823 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1824 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1825 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1826 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1827 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1828 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1829 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1830 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1831 };
1832
1833 enum { /* NVRAM to ACPI HKEY group map */
1834 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1835 TP_ACPI_HKEY_ZOOM_MASK |
1836 TP_ACPI_HKEY_DISPSWTCH_MASK |
1837 TP_ACPI_HKEY_HIBERNATE_MASK,
1838 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1839 TP_ACPI_HKEY_BRGHTDWN_MASK,
1840 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1841 TP_ACPI_HKEY_VOLDWN_MASK |
1842 TP_ACPI_HKEY_MUTE_MASK,
1843 };
1844
1845 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1846 struct tp_nvram_state {
1847 u16 thinkpad_toggle:1;
1848 u16 zoom_toggle:1;
1849 u16 display_toggle:1;
1850 u16 thinklight_toggle:1;
1851 u16 hibernate_toggle:1;
1852 u16 displayexp_toggle:1;
1853 u16 display_state:1;
1854 u16 brightness_toggle:1;
1855 u16 volume_toggle:1;
1856 u16 mute:1;
1857
1858 u8 brightness_level;
1859 u8 volume_level;
1860 };
1861
1862 /* kthread for the hotkey poller */
1863 static struct task_struct *tpacpi_hotkey_task;
1864
1865 /*
1866 * Acquire mutex to write poller control variables as an
1867 * atomic block.
1868 *
1869 * Increment hotkey_config_change when changing them if you
1870 * want the kthread to forget old state.
1871 *
1872 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1873 */
1874 static struct mutex hotkey_thread_data_mutex;
1875 static unsigned int hotkey_config_change;
1876
1877 /*
1878 * hotkey poller control variables
1879 *
1880 * Must be atomic or readers will also need to acquire mutex
1881 *
1882 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1883 * should be used only when the changes need to be taken as
1884 * a block, OR when one needs to force the kthread to forget
1885 * old state.
1886 */
1887 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1888 static unsigned int hotkey_poll_freq = 10; /* Hz */
1889
1890 #define HOTKEY_CONFIG_CRITICAL_START \
1891 do { \
1892 mutex_lock(&hotkey_thread_data_mutex); \
1893 hotkey_config_change++; \
1894 } while (0);
1895 #define HOTKEY_CONFIG_CRITICAL_END \
1896 mutex_unlock(&hotkey_thread_data_mutex);
1897
1898 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1899
1900 #define hotkey_source_mask 0U
1901 #define HOTKEY_CONFIG_CRITICAL_START
1902 #define HOTKEY_CONFIG_CRITICAL_END
1903
1904 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1905
1906 static struct mutex hotkey_mutex;
1907
1908 static enum { /* Reasons for waking up */
1909 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1910 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1911 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1912 } hotkey_wakeup_reason;
1913
1914 static int hotkey_autosleep_ack;
1915
1916 static u32 hotkey_orig_mask; /* events the BIOS had enabled */
1917 static u32 hotkey_all_mask; /* all events supported in fw */
1918 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
1919 static u32 hotkey_reserved_mask; /* events better left disabled */
1920 static u32 hotkey_driver_mask; /* events needed by the driver */
1921 static u32 hotkey_user_mask; /* events visible to userspace */
1922 static u32 hotkey_acpi_mask; /* events enabled in firmware */
1923
1924 static bool tpacpi_driver_event(const unsigned int hkey_event);
1925 static void hotkey_poll_setup(const bool may_warn);
1926
1927 /* HKEY.MHKG() return bits */
1928 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1929 enum {
1930 TP_ACPI_MULTI_MODE_INVALID = 0,
1931 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
1932 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
1933 TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
1934 TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
1935 TP_ACPI_MULTI_MODE_STAND = 1 << 4,
1936 TP_ACPI_MULTI_MODE_TENT = 1 << 5,
1937 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
1938 };
1939
1940 enum {
1941 /* The following modes are considered tablet mode for the purpose of
1942 * reporting the status to userspace. i.e. in all these modes it makes
1943 * sense to disable the laptop input devices such as touchpad and
1944 * keyboard.
1945 */
1946 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
1947 TP_ACPI_MULTI_MODE_STAND |
1948 TP_ACPI_MULTI_MODE_TENT |
1949 TP_ACPI_MULTI_MODE_STAND_TENT,
1950 };
1951
hotkey_get_wlsw(void)1952 static int hotkey_get_wlsw(void)
1953 {
1954 int status;
1955
1956 if (!tp_features.hotkey_wlsw)
1957 return -ENODEV;
1958
1959 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1960 if (dbg_wlswemul)
1961 return (tpacpi_wlsw_emulstate) ?
1962 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
1963 #endif
1964
1965 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
1966 return -EIO;
1967
1968 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
1969 }
1970
hotkey_gmms_get_tablet_mode(int s,int * has_tablet_mode)1971 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
1972 {
1973 int type = (s >> 16) & 0xffff;
1974 int value = s & 0xffff;
1975 int mode = TP_ACPI_MULTI_MODE_INVALID;
1976 int valid_modes = 0;
1977
1978 if (has_tablet_mode)
1979 *has_tablet_mode = 0;
1980
1981 switch (type) {
1982 case 1:
1983 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1984 TP_ACPI_MULTI_MODE_TABLET |
1985 TP_ACPI_MULTI_MODE_STAND_TENT;
1986 break;
1987 case 2:
1988 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1989 TP_ACPI_MULTI_MODE_FLAT |
1990 TP_ACPI_MULTI_MODE_TABLET |
1991 TP_ACPI_MULTI_MODE_STAND |
1992 TP_ACPI_MULTI_MODE_TENT;
1993 break;
1994 case 3:
1995 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
1996 TP_ACPI_MULTI_MODE_FLAT;
1997 break;
1998 case 4:
1999 case 5:
2000 /* In mode 4, FLAT is not specified as a valid mode. However,
2001 * it can be seen at least on the X1 Yoga 2nd Generation.
2002 */
2003 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
2004 TP_ACPI_MULTI_MODE_FLAT |
2005 TP_ACPI_MULTI_MODE_TABLET |
2006 TP_ACPI_MULTI_MODE_STAND |
2007 TP_ACPI_MULTI_MODE_TENT;
2008 break;
2009 default:
2010 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
2011 type, value, TPACPI_MAIL);
2012 return 0;
2013 }
2014
2015 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
2016 *has_tablet_mode = 1;
2017
2018 switch (value) {
2019 case 1:
2020 mode = TP_ACPI_MULTI_MODE_LAPTOP;
2021 break;
2022 case 2:
2023 mode = TP_ACPI_MULTI_MODE_FLAT;
2024 break;
2025 case 3:
2026 mode = TP_ACPI_MULTI_MODE_TABLET;
2027 break;
2028 case 4:
2029 if (type == 1)
2030 mode = TP_ACPI_MULTI_MODE_STAND_TENT;
2031 else
2032 mode = TP_ACPI_MULTI_MODE_STAND;
2033 break;
2034 case 5:
2035 mode = TP_ACPI_MULTI_MODE_TENT;
2036 break;
2037 default:
2038 if (type == 5 && value == 0xffff) {
2039 pr_warn("Multi mode status is undetected, assuming laptop\n");
2040 return 0;
2041 }
2042 }
2043
2044 if (!(mode & valid_modes)) {
2045 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
2046 value, type, TPACPI_MAIL);
2047 return 0;
2048 }
2049
2050 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
2051 }
2052
hotkey_get_tablet_mode(int * status)2053 static int hotkey_get_tablet_mode(int *status)
2054 {
2055 int s;
2056
2057 switch (tp_features.hotkey_tablet) {
2058 case TP_HOTKEY_TABLET_USES_MHKG:
2059 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2060 return -EIO;
2061
2062 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2063 break;
2064 case TP_HOTKEY_TABLET_USES_GMMS:
2065 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
2066 return -EIO;
2067
2068 *status = hotkey_gmms_get_tablet_mode(s, NULL);
2069 break;
2070 default:
2071 break;
2072 }
2073
2074 return 0;
2075 }
2076
2077 /*
2078 * Reads current event mask from firmware, and updates
2079 * hotkey_acpi_mask accordingly. Also resets any bits
2080 * from hotkey_user_mask that are unavailable to be
2081 * delivered (shadow requirement of the userspace ABI).
2082 */
hotkey_mask_get(void)2083 static int hotkey_mask_get(void)
2084 {
2085 lockdep_assert_held(&hotkey_mutex);
2086
2087 if (tp_features.hotkey_mask) {
2088 u32 m = 0;
2089
2090 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
2091 return -EIO;
2092
2093 hotkey_acpi_mask = m;
2094 } else {
2095 /* no mask support doesn't mean no event support... */
2096 hotkey_acpi_mask = hotkey_all_mask;
2097 }
2098
2099 /* sync userspace-visible mask */
2100 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
2101
2102 return 0;
2103 }
2104
hotkey_mask_warn_incomplete_mask(void)2105 static void hotkey_mask_warn_incomplete_mask(void)
2106 {
2107 /* log only what the user can fix... */
2108 const u32 wantedmask = hotkey_driver_mask &
2109 ~(hotkey_acpi_mask | hotkey_source_mask) &
2110 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2111
2112 if (wantedmask)
2113 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
2114 }
2115
2116 /*
2117 * Set the firmware mask when supported
2118 *
2119 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2120 *
2121 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2122 */
hotkey_mask_set(u32 mask)2123 static int hotkey_mask_set(u32 mask)
2124 {
2125 int i;
2126 int rc = 0;
2127
2128 const u32 fwmask = mask & ~hotkey_source_mask;
2129
2130 lockdep_assert_held(&hotkey_mutex);
2131
2132 if (tp_features.hotkey_mask) {
2133 for (i = 0; i < 32; i++) {
2134 if (!acpi_evalf(hkey_handle,
2135 NULL, "MHKM", "vdd", i + 1,
2136 !!(mask & (1 << i)))) {
2137 rc = -EIO;
2138 break;
2139 }
2140 }
2141 }
2142
2143 /*
2144 * We *must* make an inconditional call to hotkey_mask_get to
2145 * refresh hotkey_acpi_mask and update hotkey_user_mask
2146 *
2147 * Take the opportunity to also log when we cannot _enable_
2148 * a given event.
2149 */
2150 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
2151 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
2152 fwmask, hotkey_acpi_mask);
2153 }
2154
2155 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2156 hotkey_mask_warn_incomplete_mask();
2157
2158 return rc;
2159 }
2160
2161 /*
2162 * Sets hotkey_user_mask and tries to set the firmware mask
2163 */
hotkey_user_mask_set(const u32 mask)2164 static int hotkey_user_mask_set(const u32 mask)
2165 {
2166 int rc;
2167
2168 lockdep_assert_held(&hotkey_mutex);
2169
2170 /* Give people a chance to notice they are doing something that
2171 * is bound to go boom on their users sooner or later */
2172 if (!tp_warned.hotkey_mask_ff &&
2173 (mask == 0xffff || mask == 0xffffff ||
2174 mask == 0xffffffff)) {
2175 tp_warned.hotkey_mask_ff = 1;
2176 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
2177 mask);
2178 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
2179 }
2180
2181 /* Try to enable what the user asked for, plus whatever we need.
2182 * this syncs everything but won't enable bits in hotkey_user_mask */
2183 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2184
2185 /* Enable the available bits in hotkey_user_mask */
2186 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2187
2188 return rc;
2189 }
2190
2191 /*
2192 * Sets the driver hotkey mask.
2193 *
2194 * Can be called even if the hotkey subdriver is inactive
2195 */
tpacpi_hotkey_driver_mask_set(const u32 mask)2196 static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2197 {
2198 int rc;
2199
2200 /* Do the right thing if hotkey_init has not been called yet */
2201 if (!tp_features.hotkey) {
2202 hotkey_driver_mask = mask;
2203 return 0;
2204 }
2205
2206 mutex_lock(&hotkey_mutex);
2207
2208 HOTKEY_CONFIG_CRITICAL_START
2209 hotkey_driver_mask = mask;
2210 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2211 hotkey_source_mask |= (mask & ~hotkey_all_mask);
2212 #endif
2213 HOTKEY_CONFIG_CRITICAL_END
2214
2215 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2216 ~hotkey_source_mask);
2217 hotkey_poll_setup(true);
2218
2219 mutex_unlock(&hotkey_mutex);
2220
2221 return rc;
2222 }
2223
hotkey_status_get(int * status)2224 static int hotkey_status_get(int *status)
2225 {
2226 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2227 return -EIO;
2228
2229 return 0;
2230 }
2231
hotkey_status_set(bool enable)2232 static int hotkey_status_set(bool enable)
2233 {
2234 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
2235 return -EIO;
2236
2237 return 0;
2238 }
2239
tpacpi_input_send_tabletsw(void)2240 static void tpacpi_input_send_tabletsw(void)
2241 {
2242 int state;
2243
2244 if (tp_features.hotkey_tablet &&
2245 !hotkey_get_tablet_mode(&state)) {
2246 mutex_lock(&tpacpi_inputdev_send_mutex);
2247
2248 input_report_switch(tpacpi_inputdev,
2249 SW_TABLET_MODE, !!state);
2250 input_sync(tpacpi_inputdev);
2251
2252 mutex_unlock(&tpacpi_inputdev_send_mutex);
2253 }
2254 }
2255
tpacpi_input_send_key(const u32 hkey,bool * send_acpi_ev)2256 static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev)
2257 {
2258 bool known_ev;
2259 u32 scancode;
2260
2261 if (tpacpi_driver_event(hkey))
2262 return true;
2263
2264 /*
2265 * Before the conversion to using the sparse-keymap helpers the driver used to
2266 * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode
2267 * indexed array could be used to map scancodes to keycodes:
2268 *
2269 * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events)
2270 * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon)
2271 * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models)
2272 *
2273 * The sparse-keymap tables still use these scancodes for these ranges to
2274 * preserve userspace API compatibility (e.g. hwdb keymappings).
2275 */
2276 if (hkey >= TP_HKEY_EV_ORIG_KEY_START &&
2277 hkey <= TP_HKEY_EV_ORIG_KEY_END) {
2278 scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
2279 if (!(hotkey_user_mask & (1 << scancode)))
2280 return true; /* Not reported but still a known code */
2281 } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START &&
2282 hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) {
2283 scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START +
2284 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START;
2285 } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START &&
2286 hkey <= TP_HKEY_EV_EXTENDED_KEY_END) {
2287 scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START +
2288 TP_ACPI_HOTKEYSCAN_EXTENDED_START;
2289 } else {
2290 /*
2291 * Do not send ACPI netlink events for unknown hotkeys, to
2292 * avoid userspace starting to rely on them. Instead these
2293 * should be added to the keymap to send evdev events.
2294 */
2295 if (send_acpi_ev)
2296 *send_acpi_ev = false;
2297
2298 scancode = hkey;
2299 }
2300
2301 mutex_lock(&tpacpi_inputdev_send_mutex);
2302 known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true);
2303 mutex_unlock(&tpacpi_inputdev_send_mutex);
2304
2305 return known_ev;
2306 }
2307
2308 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2309 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2310
2311 /* Do NOT call without validating scancode first */
tpacpi_hotkey_send_key(unsigned int scancode)2312 static void tpacpi_hotkey_send_key(unsigned int scancode)
2313 {
2314 tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL);
2315 }
2316
hotkey_read_nvram(struct tp_nvram_state * n,const u32 m)2317 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
2318 {
2319 u8 d;
2320
2321 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2322 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2323 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2324 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2325 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2326 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2327 }
2328 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
2329 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2330 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2331 }
2332 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2333 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2334 n->displayexp_toggle =
2335 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2336 }
2337 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2338 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2339 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2340 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2341 n->brightness_toggle =
2342 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2343 }
2344 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2345 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2346 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2347 >> TP_NVRAM_POS_LEVEL_VOLUME;
2348 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2349 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2350 }
2351 }
2352
2353 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2354 do { \
2355 if ((event_mask & (1 << __scancode)) && \
2356 oldn->__member != newn->__member) \
2357 tpacpi_hotkey_send_key(__scancode); \
2358 } while (0)
2359
2360 #define TPACPI_MAY_SEND_KEY(__scancode) \
2361 do { \
2362 if (event_mask & (1 << __scancode)) \
2363 tpacpi_hotkey_send_key(__scancode); \
2364 } while (0)
2365
issue_volchange(const unsigned int oldvol,const unsigned int newvol,const u32 event_mask)2366 static void issue_volchange(const unsigned int oldvol,
2367 const unsigned int newvol,
2368 const u32 event_mask)
2369 {
2370 unsigned int i = oldvol;
2371
2372 while (i > newvol) {
2373 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2374 i--;
2375 }
2376 while (i < newvol) {
2377 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2378 i++;
2379 }
2380 }
2381
issue_brightnesschange(const unsigned int oldbrt,const unsigned int newbrt,const u32 event_mask)2382 static void issue_brightnesschange(const unsigned int oldbrt,
2383 const unsigned int newbrt,
2384 const u32 event_mask)
2385 {
2386 unsigned int i = oldbrt;
2387
2388 while (i > newbrt) {
2389 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2390 i--;
2391 }
2392 while (i < newbrt) {
2393 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2394 i++;
2395 }
2396 }
2397
hotkey_compare_and_issue_event(struct tp_nvram_state * oldn,struct tp_nvram_state * newn,const u32 event_mask)2398 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2399 struct tp_nvram_state *newn,
2400 const u32 event_mask)
2401 {
2402
2403 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2404 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2405 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2406 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2407
2408 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2409
2410 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2411
2412 /*
2413 * Handle volume
2414 *
2415 * This code is supposed to duplicate the IBM firmware behaviour:
2416 * - Pressing MUTE issues mute hotkey message, even when already mute
2417 * - Pressing Volume up/down issues volume up/down hotkey messages,
2418 * even when already at maximum or minimum volume
2419 * - The act of unmuting issues volume up/down notification,
2420 * depending which key was used to unmute
2421 *
2422 * We are constrained to what the NVRAM can tell us, which is not much
2423 * and certainly not enough if more than one volume hotkey was pressed
2424 * since the last poll cycle.
2425 *
2426 * Just to make our life interesting, some newer Lenovo ThinkPads have
2427 * bugs in the BIOS and may fail to update volume_toggle properly.
2428 */
2429 if (newn->mute) {
2430 /* muted */
2431 if (!oldn->mute ||
2432 oldn->volume_toggle != newn->volume_toggle ||
2433 oldn->volume_level != newn->volume_level) {
2434 /* recently muted, or repeated mute keypress, or
2435 * multiple presses ending in mute */
2436 issue_volchange(oldn->volume_level, newn->volume_level,
2437 event_mask);
2438 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2439 }
2440 } else {
2441 /* unmute */
2442 if (oldn->mute) {
2443 /* recently unmuted, issue 'unmute' keypress */
2444 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2445 }
2446 if (oldn->volume_level != newn->volume_level) {
2447 issue_volchange(oldn->volume_level, newn->volume_level,
2448 event_mask);
2449 } else if (oldn->volume_toggle != newn->volume_toggle) {
2450 /* repeated vol up/down keypress at end of scale ? */
2451 if (newn->volume_level == 0)
2452 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2453 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2454 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2455 }
2456 }
2457
2458 /* handle brightness */
2459 if (oldn->brightness_level != newn->brightness_level) {
2460 issue_brightnesschange(oldn->brightness_level,
2461 newn->brightness_level, event_mask);
2462 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2463 /* repeated key presses that didn't change state */
2464 if (newn->brightness_level == 0)
2465 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2466 else if (newn->brightness_level >= bright_maxlvl
2467 && !tp_features.bright_unkfw)
2468 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2469 }
2470
2471 #undef TPACPI_COMPARE_KEY
2472 #undef TPACPI_MAY_SEND_KEY
2473 }
2474
2475 /*
2476 * Polling driver
2477 *
2478 * We track all events in hotkey_source_mask all the time, since
2479 * most of them are edge-based. We only issue those requested by
2480 * hotkey_user_mask or hotkey_driver_mask, though.
2481 */
hotkey_kthread(void * data)2482 static int hotkey_kthread(void *data)
2483 {
2484 struct tp_nvram_state s[2] = { 0 };
2485 u32 poll_mask, event_mask;
2486 unsigned int si, so;
2487 unsigned long t;
2488 unsigned int change_detector;
2489 unsigned int poll_freq;
2490 bool was_frozen;
2491
2492 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2493 goto exit;
2494
2495 set_freezable();
2496
2497 so = 0;
2498 si = 1;
2499 t = 0;
2500
2501 /* Initial state for compares */
2502 mutex_lock(&hotkey_thread_data_mutex);
2503 change_detector = hotkey_config_change;
2504 poll_mask = hotkey_source_mask;
2505 event_mask = hotkey_source_mask &
2506 (hotkey_driver_mask | hotkey_user_mask);
2507 poll_freq = hotkey_poll_freq;
2508 mutex_unlock(&hotkey_thread_data_mutex);
2509 hotkey_read_nvram(&s[so], poll_mask);
2510
2511 while (!kthread_should_stop()) {
2512 if (t == 0) {
2513 if (likely(poll_freq))
2514 t = 1000/poll_freq;
2515 else
2516 t = 100; /* should never happen... */
2517 }
2518 t = msleep_interruptible(t);
2519 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
2520 break;
2521
2522 if (t > 0 && !was_frozen)
2523 continue;
2524
2525 mutex_lock(&hotkey_thread_data_mutex);
2526 if (was_frozen || hotkey_config_change != change_detector) {
2527 /* forget old state on thaw or config change */
2528 si = so;
2529 t = 0;
2530 change_detector = hotkey_config_change;
2531 }
2532 poll_mask = hotkey_source_mask;
2533 event_mask = hotkey_source_mask &
2534 (hotkey_driver_mask | hotkey_user_mask);
2535 poll_freq = hotkey_poll_freq;
2536 mutex_unlock(&hotkey_thread_data_mutex);
2537
2538 if (likely(poll_mask)) {
2539 hotkey_read_nvram(&s[si], poll_mask);
2540 if (likely(si != so)) {
2541 hotkey_compare_and_issue_event(&s[so], &s[si],
2542 event_mask);
2543 }
2544 }
2545
2546 so = si;
2547 si ^= 1;
2548 }
2549
2550 exit:
2551 return 0;
2552 }
2553
hotkey_poll_stop_sync(void)2554 static void hotkey_poll_stop_sync(void)
2555 {
2556 lockdep_assert_held(&hotkey_mutex);
2557
2558 if (tpacpi_hotkey_task) {
2559 kthread_stop(tpacpi_hotkey_task);
2560 tpacpi_hotkey_task = NULL;
2561 }
2562 }
2563
hotkey_poll_setup(const bool may_warn)2564 static void hotkey_poll_setup(const bool may_warn)
2565 {
2566 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2567 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
2568
2569 lockdep_assert_held(&hotkey_mutex);
2570
2571 if (hotkey_poll_freq > 0 &&
2572 (poll_driver_mask ||
2573 (poll_user_mask && tpacpi_inputdev->users > 0))) {
2574 if (!tpacpi_hotkey_task) {
2575 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
2576 NULL, TPACPI_NVRAM_KTHREAD_NAME);
2577 if (IS_ERR(tpacpi_hotkey_task)) {
2578 tpacpi_hotkey_task = NULL;
2579 pr_err("could not create kernel thread for hotkey polling\n");
2580 }
2581 }
2582 } else {
2583 hotkey_poll_stop_sync();
2584 if (may_warn && (poll_driver_mask || poll_user_mask) &&
2585 hotkey_poll_freq == 0) {
2586 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
2587 poll_user_mask, poll_driver_mask);
2588 }
2589 }
2590 }
2591
hotkey_poll_setup_safe(const bool may_warn)2592 static void hotkey_poll_setup_safe(const bool may_warn)
2593 {
2594 mutex_lock(&hotkey_mutex);
2595 hotkey_poll_setup(may_warn);
2596 mutex_unlock(&hotkey_mutex);
2597 }
2598
hotkey_poll_set_freq(unsigned int freq)2599 static void hotkey_poll_set_freq(unsigned int freq)
2600 {
2601 lockdep_assert_held(&hotkey_mutex);
2602
2603 if (!freq)
2604 hotkey_poll_stop_sync();
2605
2606 hotkey_poll_freq = freq;
2607 }
2608
2609 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2610
hotkey_poll_setup(const bool __unused)2611 static void hotkey_poll_setup(const bool __unused)
2612 {
2613 }
2614
hotkey_poll_setup_safe(const bool __unused)2615 static void hotkey_poll_setup_safe(const bool __unused)
2616 {
2617 }
2618
hotkey_poll_stop_sync(void)2619 static void hotkey_poll_stop_sync(void)
2620 {
2621 }
2622 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2623
hotkey_inputdev_open(struct input_dev * dev)2624 static int hotkey_inputdev_open(struct input_dev *dev)
2625 {
2626 switch (tpacpi_lifecycle) {
2627 case TPACPI_LIFE_INIT:
2628 case TPACPI_LIFE_RUNNING:
2629 hotkey_poll_setup_safe(false);
2630 return 0;
2631 case TPACPI_LIFE_EXITING:
2632 return -EBUSY;
2633 }
2634
2635 /* Should only happen if tpacpi_lifecycle is corrupt */
2636 BUG();
2637 return -EBUSY;
2638 }
2639
hotkey_inputdev_close(struct input_dev * dev)2640 static void hotkey_inputdev_close(struct input_dev *dev)
2641 {
2642 /* disable hotkey polling when possible */
2643 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
2644 !(hotkey_source_mask & hotkey_driver_mask))
2645 hotkey_poll_setup_safe(false);
2646 }
2647
2648 /* sysfs hotkey enable ------------------------------------------------- */
hotkey_enable_show(struct device * dev,struct device_attribute * attr,char * buf)2649 static ssize_t hotkey_enable_show(struct device *dev,
2650 struct device_attribute *attr,
2651 char *buf)
2652 {
2653 int res, status;
2654
2655 printk_deprecated_attribute("hotkey_enable",
2656 "Hotkey reporting is always enabled");
2657
2658 res = hotkey_status_get(&status);
2659 if (res)
2660 return res;
2661
2662 return sysfs_emit(buf, "%d\n", status);
2663 }
2664
hotkey_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2665 static ssize_t hotkey_enable_store(struct device *dev,
2666 struct device_attribute *attr,
2667 const char *buf, size_t count)
2668 {
2669 unsigned long t;
2670
2671 printk_deprecated_attribute("hotkey_enable",
2672 "Hotkeys can be disabled through hotkey_mask");
2673
2674 if (parse_strtoul(buf, 1, &t))
2675 return -EINVAL;
2676
2677 if (t == 0)
2678 return -EPERM;
2679
2680 return count;
2681 }
2682
2683 static DEVICE_ATTR_RW(hotkey_enable);
2684
2685 /* sysfs hotkey mask --------------------------------------------------- */
hotkey_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2686 static ssize_t hotkey_mask_show(struct device *dev,
2687 struct device_attribute *attr,
2688 char *buf)
2689 {
2690 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask);
2691 }
2692
hotkey_mask_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2693 static ssize_t hotkey_mask_store(struct device *dev,
2694 struct device_attribute *attr,
2695 const char *buf, size_t count)
2696 {
2697 unsigned long t;
2698 int res;
2699
2700 if (parse_strtoul(buf, 0xffffffffUL, &t))
2701 return -EINVAL;
2702
2703 if (mutex_lock_killable(&hotkey_mutex))
2704 return -ERESTARTSYS;
2705
2706 res = hotkey_user_mask_set(t);
2707
2708 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2709 hotkey_poll_setup(true);
2710 #endif
2711
2712 mutex_unlock(&hotkey_mutex);
2713
2714 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2715
2716 return (res) ? res : count;
2717 }
2718
2719 static DEVICE_ATTR_RW(hotkey_mask);
2720
2721 /* sysfs hotkey bios_enabled ------------------------------------------- */
hotkey_bios_enabled_show(struct device * dev,struct device_attribute * attr,char * buf)2722 static ssize_t hotkey_bios_enabled_show(struct device *dev,
2723 struct device_attribute *attr,
2724 char *buf)
2725 {
2726 return sysfs_emit(buf, "0\n");
2727 }
2728
2729 static DEVICE_ATTR_RO(hotkey_bios_enabled);
2730
2731 /* sysfs hotkey bios_mask ---------------------------------------------- */
hotkey_bios_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2732 static ssize_t hotkey_bios_mask_show(struct device *dev,
2733 struct device_attribute *attr,
2734 char *buf)
2735 {
2736 printk_deprecated_attribute("hotkey_bios_mask",
2737 "This attribute is useless.");
2738 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask);
2739 }
2740
2741 static DEVICE_ATTR_RO(hotkey_bios_mask);
2742
2743 /* sysfs hotkey all_mask ----------------------------------------------- */
hotkey_all_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2744 static ssize_t hotkey_all_mask_show(struct device *dev,
2745 struct device_attribute *attr,
2746 char *buf)
2747 {
2748 return sysfs_emit(buf, "0x%08x\n",
2749 hotkey_all_mask | hotkey_source_mask);
2750 }
2751
2752 static DEVICE_ATTR_RO(hotkey_all_mask);
2753
2754 /* sysfs hotkey all_mask ----------------------------------------------- */
hotkey_adaptive_all_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2755 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
2756 struct device_attribute *attr,
2757 char *buf)
2758 {
2759 return sysfs_emit(buf, "0x%08x\n",
2760 hotkey_adaptive_all_mask | hotkey_source_mask);
2761 }
2762
2763 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
2764
2765 /* sysfs hotkey recommended_mask --------------------------------------- */
hotkey_recommended_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2766 static ssize_t hotkey_recommended_mask_show(struct device *dev,
2767 struct device_attribute *attr,
2768 char *buf)
2769 {
2770 return sysfs_emit(buf, "0x%08x\n",
2771 (hotkey_all_mask | hotkey_source_mask)
2772 & ~hotkey_reserved_mask);
2773 }
2774
2775 static DEVICE_ATTR_RO(hotkey_recommended_mask);
2776
2777 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2778
2779 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
hotkey_source_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2780 static ssize_t hotkey_source_mask_show(struct device *dev,
2781 struct device_attribute *attr,
2782 char *buf)
2783 {
2784 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask);
2785 }
2786
hotkey_source_mask_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2787 static ssize_t hotkey_source_mask_store(struct device *dev,
2788 struct device_attribute *attr,
2789 const char *buf, size_t count)
2790 {
2791 unsigned long t;
2792 u32 r_ev;
2793 int rc;
2794
2795 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2796 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2797 return -EINVAL;
2798
2799 if (mutex_lock_killable(&hotkey_mutex))
2800 return -ERESTARTSYS;
2801
2802 HOTKEY_CONFIG_CRITICAL_START
2803 hotkey_source_mask = t;
2804 HOTKEY_CONFIG_CRITICAL_END
2805
2806 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2807 ~hotkey_source_mask);
2808 hotkey_poll_setup(true);
2809
2810 /* check if events needed by the driver got disabled */
2811 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2812 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
2813
2814 mutex_unlock(&hotkey_mutex);
2815
2816 if (rc < 0)
2817 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
2818
2819 if (r_ev)
2820 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
2821 r_ev);
2822
2823 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2824
2825 return (rc < 0) ? rc : count;
2826 }
2827
2828 static DEVICE_ATTR_RW(hotkey_source_mask);
2829
2830 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
hotkey_poll_freq_show(struct device * dev,struct device_attribute * attr,char * buf)2831 static ssize_t hotkey_poll_freq_show(struct device *dev,
2832 struct device_attribute *attr,
2833 char *buf)
2834 {
2835 return sysfs_emit(buf, "%d\n", hotkey_poll_freq);
2836 }
2837
hotkey_poll_freq_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2838 static ssize_t hotkey_poll_freq_store(struct device *dev,
2839 struct device_attribute *attr,
2840 const char *buf, size_t count)
2841 {
2842 unsigned long t;
2843
2844 if (parse_strtoul(buf, 25, &t))
2845 return -EINVAL;
2846
2847 if (mutex_lock_killable(&hotkey_mutex))
2848 return -ERESTARTSYS;
2849
2850 hotkey_poll_set_freq(t);
2851 hotkey_poll_setup(true);
2852
2853 mutex_unlock(&hotkey_mutex);
2854
2855 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2856
2857 return count;
2858 }
2859
2860 static DEVICE_ATTR_RW(hotkey_poll_freq);
2861
2862 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2863
2864 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
hotkey_radio_sw_show(struct device * dev,struct device_attribute * attr,char * buf)2865 static ssize_t hotkey_radio_sw_show(struct device *dev,
2866 struct device_attribute *attr,
2867 char *buf)
2868 {
2869 int res;
2870 res = hotkey_get_wlsw();
2871 if (res < 0)
2872 return res;
2873
2874 /* Opportunistic update */
2875 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2876
2877 return sysfs_emit(buf, "%d\n",
2878 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
2879 }
2880
2881 static DEVICE_ATTR_RO(hotkey_radio_sw);
2882
hotkey_radio_sw_notify_change(void)2883 static void hotkey_radio_sw_notify_change(void)
2884 {
2885 if (tp_features.hotkey_wlsw)
2886 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2887 "hotkey_radio_sw");
2888 }
2889
2890 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
hotkey_tablet_mode_show(struct device * dev,struct device_attribute * attr,char * buf)2891 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2892 struct device_attribute *attr,
2893 char *buf)
2894 {
2895 int res, s;
2896 res = hotkey_get_tablet_mode(&s);
2897 if (res < 0)
2898 return res;
2899
2900 return sysfs_emit(buf, "%d\n", !!s);
2901 }
2902
2903 static DEVICE_ATTR_RO(hotkey_tablet_mode);
2904
hotkey_tablet_mode_notify_change(void)2905 static void hotkey_tablet_mode_notify_change(void)
2906 {
2907 if (tp_features.hotkey_tablet)
2908 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2909 "hotkey_tablet_mode");
2910 }
2911
2912 /* sysfs wakeup reason (pollable) -------------------------------------- */
hotkey_wakeup_reason_show(struct device * dev,struct device_attribute * attr,char * buf)2913 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2914 struct device_attribute *attr,
2915 char *buf)
2916 {
2917 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason);
2918 }
2919
2920 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2921
hotkey_wakeup_reason_notify_change(void)2922 static void hotkey_wakeup_reason_notify_change(void)
2923 {
2924 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2925 "wakeup_reason");
2926 }
2927
2928 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
hotkey_wakeup_hotunplug_complete_show(struct device * dev,struct device_attribute * attr,char * buf)2929 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2930 struct device_attribute *attr,
2931 char *buf)
2932 {
2933 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack);
2934 }
2935
2936 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
2937 hotkey_wakeup_hotunplug_complete_show, NULL);
2938
hotkey_wakeup_hotunplug_complete_notify_change(void)2939 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2940 {
2941 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2942 "wakeup_hotunplug_complete");
2943 }
2944
2945 /* sysfs adaptive kbd mode --------------------------------------------- */
2946
2947 static int adaptive_keyboard_get_mode(void);
2948 static int adaptive_keyboard_set_mode(int new_mode);
2949
2950 enum ADAPTIVE_KEY_MODE {
2951 HOME_MODE,
2952 WEB_BROWSER_MODE,
2953 WEB_CONFERENCE_MODE,
2954 FUNCTION_MODE,
2955 LAYFLAT_MODE
2956 };
2957
adaptive_kbd_mode_show(struct device * dev,struct device_attribute * attr,char * buf)2958 static ssize_t adaptive_kbd_mode_show(struct device *dev,
2959 struct device_attribute *attr,
2960 char *buf)
2961 {
2962 int current_mode;
2963
2964 current_mode = adaptive_keyboard_get_mode();
2965 if (current_mode < 0)
2966 return current_mode;
2967
2968 return sysfs_emit(buf, "%d\n", current_mode);
2969 }
2970
adaptive_kbd_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2971 static ssize_t adaptive_kbd_mode_store(struct device *dev,
2972 struct device_attribute *attr,
2973 const char *buf, size_t count)
2974 {
2975 unsigned long t;
2976 int res;
2977
2978 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
2979 return -EINVAL;
2980
2981 res = adaptive_keyboard_set_mode(t);
2982 return (res < 0) ? res : count;
2983 }
2984
2985 static DEVICE_ATTR_RW(adaptive_kbd_mode);
2986
2987 static struct attribute *adaptive_kbd_attributes[] = {
2988 &dev_attr_adaptive_kbd_mode.attr,
2989 NULL
2990 };
2991
hadaptive_kbd_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)2992 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj,
2993 struct attribute *attr, int n)
2994 {
2995 return tp_features.has_adaptive_kbd ? attr->mode : 0;
2996 }
2997
2998 static const struct attribute_group adaptive_kbd_attr_group = {
2999 .is_visible = hadaptive_kbd_attr_is_visible,
3000 .attrs = adaptive_kbd_attributes,
3001 };
3002
3003 /* --------------------------------------------------------------------- */
3004
3005 static struct attribute *hotkey_attributes[] = {
3006 &dev_attr_hotkey_enable.attr,
3007 &dev_attr_hotkey_bios_enabled.attr,
3008 &dev_attr_hotkey_bios_mask.attr,
3009 &dev_attr_wakeup_reason.attr,
3010 &dev_attr_wakeup_hotunplug_complete.attr,
3011 &dev_attr_hotkey_mask.attr,
3012 &dev_attr_hotkey_all_mask.attr,
3013 &dev_attr_hotkey_adaptive_all_mask.attr,
3014 &dev_attr_hotkey_recommended_mask.attr,
3015 &dev_attr_hotkey_tablet_mode.attr,
3016 &dev_attr_hotkey_radio_sw.attr,
3017 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3018 &dev_attr_hotkey_source_mask.attr,
3019 &dev_attr_hotkey_poll_freq.attr,
3020 #endif
3021 NULL
3022 };
3023
hotkey_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)3024 static umode_t hotkey_attr_is_visible(struct kobject *kobj,
3025 struct attribute *attr, int n)
3026 {
3027 if (attr == &dev_attr_hotkey_tablet_mode.attr) {
3028 if (!tp_features.hotkey_tablet)
3029 return 0;
3030 } else if (attr == &dev_attr_hotkey_radio_sw.attr) {
3031 if (!tp_features.hotkey_wlsw)
3032 return 0;
3033 }
3034
3035 return attr->mode;
3036 }
3037
3038 static const struct attribute_group hotkey_attr_group = {
3039 .is_visible = hotkey_attr_is_visible,
3040 .attrs = hotkey_attributes,
3041 };
3042
3043 /*
3044 * Sync both the hw and sw blocking state of all switches
3045 */
tpacpi_send_radiosw_update(void)3046 static void tpacpi_send_radiosw_update(void)
3047 {
3048 int wlsw;
3049
3050 /*
3051 * We must sync all rfkill controllers *before* issuing any
3052 * rfkill input events, or we will race the rfkill core input
3053 * handler.
3054 *
3055 * tpacpi_inputdev_send_mutex works as a synchronization point
3056 * for the above.
3057 *
3058 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3059 */
3060
3061 wlsw = hotkey_get_wlsw();
3062
3063 /* Sync hw blocking state first if it is hw-blocked */
3064 if (wlsw == TPACPI_RFK_RADIO_OFF)
3065 tpacpi_rfk_update_hwblock_state(true);
3066
3067 /* Sync hw blocking state last if it is hw-unblocked */
3068 if (wlsw == TPACPI_RFK_RADIO_ON)
3069 tpacpi_rfk_update_hwblock_state(false);
3070
3071 /* Issue rfkill input event for WLSW switch */
3072 if (!(wlsw < 0)) {
3073 mutex_lock(&tpacpi_inputdev_send_mutex);
3074
3075 input_report_switch(tpacpi_inputdev,
3076 SW_RFKILL_ALL, (wlsw > 0));
3077 input_sync(tpacpi_inputdev);
3078
3079 mutex_unlock(&tpacpi_inputdev_send_mutex);
3080 }
3081
3082 /*
3083 * this can be unconditional, as we will poll state again
3084 * if userspace uses the notify to read data
3085 */
3086 hotkey_radio_sw_notify_change();
3087 }
3088
hotkey_exit(void)3089 static void hotkey_exit(void)
3090 {
3091 mutex_lock(&hotkey_mutex);
3092 hotkey_poll_stop_sync();
3093 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
3094 "restoring original HKEY status and mask\n");
3095 /* yes, there is a bitwise or below, we want the
3096 * functions to be called even if one of them fail */
3097 if (((tp_features.hotkey_mask &&
3098 hotkey_mask_set(hotkey_orig_mask)) |
3099 hotkey_status_set(false)) != 0)
3100 pr_err("failed to restore hot key mask to BIOS defaults\n");
3101
3102 mutex_unlock(&hotkey_mutex);
3103 }
3104
3105 /*
3106 * HKEY quirks:
3107 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3108 */
3109
3110 #define TPACPI_HK_Q_INIMASK 0x0001
3111
3112 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3113 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3114 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3115 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3116 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3117 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3118 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3119 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3120 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3121 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3122 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3123 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3124 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3125 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3126 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3127 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3128 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3129 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3130 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3131 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3132 };
3133
hotkey_init_tablet_mode(void)3134 static int hotkey_init_tablet_mode(void)
3135 {
3136 int in_tablet_mode = 0, res;
3137 char *type = NULL;
3138
3139 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
3140 int has_tablet_mode;
3141
3142 in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
3143 &has_tablet_mode);
3144 /*
3145 * The Yoga 11e series has 2 accelerometers described by a
3146 * BOSC0200 ACPI node. This setup relies on a Windows service
3147 * which calls special ACPI methods on this node to report
3148 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
3149 * does not support this, so skip the hotkey on these models.
3150 */
3151 if (has_tablet_mode && !dual_accel_detect())
3152 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
3153 type = "GMMS";
3154 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
3155 /* For X41t, X60t, X61t Tablets... */
3156 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
3157 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
3158 type = "MHKG";
3159 }
3160
3161 if (!tp_features.hotkey_tablet)
3162 return 0;
3163
3164 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
3165 type, in_tablet_mode ? "tablet" : "laptop");
3166
3167 return in_tablet_mode;
3168 }
3169
3170 static const struct key_entry keymap_ibm[] __initconst = {
3171 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
3172 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
3173 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } },
3174 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } },
3175 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
3176 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
3177 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } },
3178 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
3179 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
3180 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
3181 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
3182 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
3183 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
3184 /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */
3185 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
3186 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
3187 /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */
3188 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
3189 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
3190 /*
3191 * Volume: firmware always reacts and reprograms the built-in *extra* mixer.
3192 * Suppressed by default through hotkey_reserved_mask.
3193 */
3194 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
3195 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
3196 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
3197 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
3198 { KE_END }
3199 };
3200
3201 static const struct key_entry keymap_lenovo[] __initconst = {
3202 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
3203 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
3204 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } },
3205 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } },
3206 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
3207 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
3208 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } },
3209 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
3210 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
3211 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
3212 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
3213 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
3214 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
3215 /*
3216 * These should be enabled --only-- when ACPI video is disabled and
3217 * are handled in a special way by the init code.
3218 */
3219 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
3220 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
3221 /* Suppressed by default through hotkey_reserved_mask. */
3222 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
3223 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
3224 /*
3225 * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and
3226 * reprograms the built-in *extra* mixer.
3227 * T60?, T61, R60?, R61: firmware and EC tries to send these over
3228 * the regular keyboard (not through tpacpi). There are still weird bugs
3229 * re. MUTE. May cause the BIOS to interfere with the HDA mixer.
3230 * Suppressed by default through hotkey_reserved_mask.
3231 */
3232 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
3233 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
3234 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
3235 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
3236 { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } },
3237 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } },
3238 { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } },
3239 { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } },
3240 { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } },
3241 /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */
3242 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } },
3243 { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } },
3244 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } },
3245 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } },
3246 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } },
3247 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } },
3248 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } },
3249 { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } },
3250 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } },
3251 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } },
3252 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } },
3253 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } },
3254 { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } },
3255 { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } },
3256 { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } },
3257 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } },
3258 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } },
3259 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } },
3260 { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } },
3261 { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } },
3262 /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */
3263 { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } },
3264 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } },
3265 { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } },
3266 { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } },
3267 { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } },
3268 /* Used by "Lenovo Quick Clean" */
3269 { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } },
3270 { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } },
3271 { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } },
3272 { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } },
3273 /*
3274 * All mapping below are for raw untranslated hkey event codes mapped directly
3275 * after switching to sparse keymap support. The mappings above use translated
3276 * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key().
3277 */
3278 { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */
3279 { KE_KEY, 0x1320, { KEY_LINK_PHONE } },
3280 { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } },
3281 { KE_END }
3282 };
3283
hotkey_init(struct ibm_init_struct * iibm)3284 static int __init hotkey_init(struct ibm_init_struct *iibm)
3285 {
3286 enum keymap_index {
3287 TPACPI_KEYMAP_IBM_GENERIC = 0,
3288 TPACPI_KEYMAP_LENOVO_GENERIC,
3289 };
3290
3291 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3292 /* Generic maps (fallback) */
3293 {
3294 .vendor = PCI_VENDOR_ID_IBM,
3295 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3296 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3297 },
3298 {
3299 .vendor = PCI_VENDOR_ID_LENOVO,
3300 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3301 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3302 },
3303 };
3304
3305 unsigned long keymap_id, quirks;
3306 const struct key_entry *keymap;
3307 bool radiosw_state = false;
3308 bool tabletsw_state = false;
3309 int hkeyv, res, status;
3310
3311 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3312 "initializing hotkey subdriver\n");
3313
3314 BUG_ON(!tpacpi_inputdev);
3315 BUG_ON(tpacpi_inputdev->open != NULL ||
3316 tpacpi_inputdev->close != NULL);
3317
3318 TPACPI_ACPIHANDLE_INIT(hkey);
3319 mutex_init(&hotkey_mutex);
3320
3321 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3322 mutex_init(&hotkey_thread_data_mutex);
3323 #endif
3324
3325 /* hotkey not supported on 570 */
3326 tp_features.hotkey = hkey_handle != NULL;
3327
3328 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3329 "hotkeys are %s\n",
3330 str_supported(tp_features.hotkey));
3331
3332 if (!tp_features.hotkey)
3333 return -ENODEV;
3334
3335 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3336 ARRAY_SIZE(tpacpi_hotkey_qtable));
3337
3338 tpacpi_disable_brightness_delay();
3339
3340 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3341 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3342 for HKEY interface version 0x100 */
3343 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3344 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3345 "firmware HKEY interface version: 0x%x\n",
3346 hkeyv);
3347
3348 switch (hkeyv >> 8) {
3349 case 1:
3350 /*
3351 * MHKV 0x100 in A31, R40, R40e,
3352 * T4x, X31, and later
3353 */
3354
3355 /* Paranoia check AND init hotkey_all_mask */
3356 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3357 "MHKA", "qd")) {
3358 pr_err("missing MHKA handler, please report this to %s\n",
3359 TPACPI_MAIL);
3360 /* Fallback: pre-init for FN+F3,F4,F12 */
3361 hotkey_all_mask = 0x080cU;
3362 } else {
3363 tp_features.hotkey_mask = 1;
3364 }
3365 break;
3366
3367 case 2:
3368 /*
3369 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
3370 */
3371
3372 /* Paranoia check AND init hotkey_all_mask */
3373 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3374 "MHKA", "dd", 1)) {
3375 pr_err("missing MHKA handler, please report this to %s\n",
3376 TPACPI_MAIL);
3377 /* Fallback: pre-init for FN+F3,F4,F12 */
3378 hotkey_all_mask = 0x080cU;
3379 } else {
3380 tp_features.hotkey_mask = 1;
3381 }
3382
3383 /*
3384 * Check if we have an adaptive keyboard, like on the
3385 * Lenovo Carbon X1 2014 (2nd Gen).
3386 */
3387 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
3388 "MHKA", "dd", 2)) {
3389 if (hotkey_adaptive_all_mask != 0)
3390 tp_features.has_adaptive_kbd = true;
3391 } else {
3392 tp_features.has_adaptive_kbd = false;
3393 hotkey_adaptive_all_mask = 0x0U;
3394 }
3395 break;
3396
3397 default:
3398 pr_err("unknown version of the HKEY interface: 0x%x\n",
3399 hkeyv);
3400 pr_err("please report this to %s\n", TPACPI_MAIL);
3401 break;
3402 }
3403 }
3404
3405 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3406 "hotkey masks are %s\n",
3407 str_supported(tp_features.hotkey_mask));
3408
3409 /* Init hotkey_all_mask if not initialized yet */
3410 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3411 (quirks & TPACPI_HK_Q_INIMASK))
3412 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
3413
3414 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3415 if (tp_features.hotkey_mask) {
3416 /* hotkey_source_mask *must* be zero for
3417 * the first hotkey_mask_get to return hotkey_orig_mask */
3418 mutex_lock(&hotkey_mutex);
3419 res = hotkey_mask_get();
3420 mutex_unlock(&hotkey_mutex);
3421 if (res)
3422 return res;
3423
3424 hotkey_orig_mask = hotkey_acpi_mask;
3425 } else {
3426 hotkey_orig_mask = hotkey_all_mask;
3427 hotkey_acpi_mask = hotkey_all_mask;
3428 }
3429
3430 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3431 if (dbg_wlswemul) {
3432 tp_features.hotkey_wlsw = 1;
3433 radiosw_state = !!tpacpi_wlsw_emulstate;
3434 pr_info("radio switch emulation enabled\n");
3435 } else
3436 #endif
3437 /* Not all thinkpads have a hardware radio switch */
3438 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3439 tp_features.hotkey_wlsw = 1;
3440 radiosw_state = !!status;
3441 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0)));
3442 }
3443
3444 tabletsw_state = hotkey_init_tablet_mode();
3445
3446 /* Set up key map */
3447 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3448 ARRAY_SIZE(tpacpi_keymap_qtable));
3449 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3450 "using keymap number %lu\n", keymap_id);
3451
3452 /* Keys which should be reserved on both IBM and Lenovo models */
3453 hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK |
3454 TP_ACPI_HKEY_VOLUP_MASK |
3455 TP_ACPI_HKEY_VOLDWN_MASK |
3456 TP_ACPI_HKEY_MUTE_MASK;
3457 /*
3458 * Reserve brightness up/down unconditionally on IBM models, on Lenovo
3459 * models these are disabled based on acpi_video_get_backlight_type().
3460 */
3461 if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) {
3462 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
3463 TP_ACPI_HKEY_BRGHTDWN_MASK;
3464 keymap = keymap_ibm;
3465 } else {
3466 keymap = keymap_lenovo;
3467 }
3468
3469 res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL);
3470 if (res)
3471 return res;
3472
3473 if (tp_features.hotkey_wlsw) {
3474 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
3475 input_report_switch(tpacpi_inputdev,
3476 SW_RFKILL_ALL, radiosw_state);
3477 }
3478 if (tp_features.hotkey_tablet) {
3479 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
3480 input_report_switch(tpacpi_inputdev,
3481 SW_TABLET_MODE, tabletsw_state);
3482 }
3483
3484 /* Do not issue duplicate brightness change events to
3485 * userspace. tpacpi_detect_brightness_capabilities() must have
3486 * been called before this point */
3487 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
3488 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
3489 pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
3490
3491 /* Disable brightness up/down on Lenovo thinkpads when
3492 * ACPI is handling them, otherwise it is plain impossible
3493 * for userspace to do something even remotely sane */
3494 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
3495 TP_ACPI_HKEY_BRGHTDWN_MASK;
3496 }
3497
3498 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3499 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3500 & ~hotkey_all_mask
3501 & ~hotkey_reserved_mask;
3502
3503 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3504 "hotkey source mask 0x%08x, polling freq %u\n",
3505 hotkey_source_mask, hotkey_poll_freq);
3506 #endif
3507
3508 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3509 "enabling firmware HKEY event interface...\n");
3510 res = hotkey_status_set(true);
3511 if (res) {
3512 hotkey_exit();
3513 return res;
3514 }
3515 mutex_lock(&hotkey_mutex);
3516 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3517 | hotkey_driver_mask)
3518 & ~hotkey_source_mask);
3519 mutex_unlock(&hotkey_mutex);
3520 if (res < 0 && res != -ENXIO) {
3521 hotkey_exit();
3522 return res;
3523 }
3524 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3525 & ~hotkey_reserved_mask;
3526 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3527 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3528 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
3529
3530 tpacpi_inputdev->open = &hotkey_inputdev_open;
3531 tpacpi_inputdev->close = &hotkey_inputdev_close;
3532
3533 hotkey_poll_setup_safe(true);
3534
3535 /* Enable doubletap by default */
3536 tp_features.trackpoint_doubletap = 1;
3537
3538 return 0;
3539 }
3540
3541 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3542 * mode, Web conference mode, Function mode and Lay-flat mode.
3543 * We support Home mode and Function mode currently.
3544 *
3545 * Will consider support rest of modes in future.
3546 *
3547 */
3548 static const int adaptive_keyboard_modes[] = {
3549 HOME_MODE,
3550 /* WEB_BROWSER_MODE = 2,
3551 WEB_CONFERENCE_MODE = 3, */
3552 FUNCTION_MODE
3553 };
3554
3555 /* press Fn key a while second, it will switch to Function Mode. Then
3556 * release Fn key, previous mode be restored.
3557 */
3558 static bool adaptive_keyboard_mode_is_saved;
3559 static int adaptive_keyboard_prev_mode;
3560
adaptive_keyboard_get_mode(void)3561 static int adaptive_keyboard_get_mode(void)
3562 {
3563 int mode = 0;
3564
3565 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3566 pr_err("Cannot read adaptive keyboard mode\n");
3567 return -EIO;
3568 }
3569
3570 return mode;
3571 }
3572
adaptive_keyboard_set_mode(int new_mode)3573 static int adaptive_keyboard_set_mode(int new_mode)
3574 {
3575 if (new_mode < 0 ||
3576 new_mode > LAYFLAT_MODE)
3577 return -EINVAL;
3578
3579 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3580 pr_err("Cannot set adaptive keyboard mode\n");
3581 return -EIO;
3582 }
3583
3584 return 0;
3585 }
3586
adaptive_keyboard_get_next_mode(int mode)3587 static int adaptive_keyboard_get_next_mode(int mode)
3588 {
3589 size_t i;
3590 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3591
3592 for (i = 0; i <= max_mode; i++) {
3593 if (adaptive_keyboard_modes[i] == mode)
3594 break;
3595 }
3596
3597 if (i >= max_mode)
3598 i = 0;
3599 else
3600 i++;
3601
3602 return adaptive_keyboard_modes[i];
3603 }
3604
adaptive_keyboard_change_row(void)3605 static void adaptive_keyboard_change_row(void)
3606 {
3607 int mode;
3608
3609 if (adaptive_keyboard_mode_is_saved) {
3610 mode = adaptive_keyboard_prev_mode;
3611 adaptive_keyboard_mode_is_saved = false;
3612 } else {
3613 mode = adaptive_keyboard_get_mode();
3614 if (mode < 0)
3615 return;
3616 mode = adaptive_keyboard_get_next_mode(mode);
3617 }
3618
3619 adaptive_keyboard_set_mode(mode);
3620 }
3621
adaptive_keyboard_s_quickview_row(void)3622 static void adaptive_keyboard_s_quickview_row(void)
3623 {
3624 int mode;
3625
3626 mode = adaptive_keyboard_get_mode();
3627 if (mode < 0)
3628 return;
3629
3630 adaptive_keyboard_prev_mode = mode;
3631 adaptive_keyboard_mode_is_saved = true;
3632
3633 adaptive_keyboard_set_mode(FUNCTION_MODE);
3634 }
3635
3636 /* 0x1000-0x1FFF: key presses */
hotkey_notify_hotkey(const u32 hkey,bool * send_acpi_ev)3637 static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev)
3638 {
3639 /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */
3640 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) {
3641 *send_acpi_ev = false;
3642
3643 /* Original hotkeys may be polled from NVRAM instead */
3644 unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
3645 if (hotkey_source_mask & (1 << scancode))
3646 return true;
3647 }
3648
3649 return tpacpi_input_send_key(hkey, send_acpi_ev);
3650 }
3651
3652 /* 0x2000-0x2FFF: Wakeup reason */
hotkey_notify_wakeup(const u32 hkey,bool * send_acpi_ev)3653 static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev)
3654 {
3655 switch (hkey) {
3656 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3657 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3658 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3659 *send_acpi_ev = false;
3660 break;
3661
3662 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3663 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3664 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3665 *send_acpi_ev = false;
3666 break;
3667
3668 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3669 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
3670 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
3671 /* how to auto-heal: */
3672 /* 2313: woke up from S3, go to S4/S5 */
3673 /* 2413: woke up from S4, go to S5 */
3674 break;
3675
3676 default:
3677 return false;
3678 }
3679
3680 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3681 pr_info("woke up due to a hot-unplug request...\n");
3682 hotkey_wakeup_reason_notify_change();
3683 }
3684 return true;
3685 }
3686
3687 /* 0x4000-0x4FFF: dock-related events */
hotkey_notify_dockevent(const u32 hkey,bool * send_acpi_ev)3688 static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev)
3689 {
3690 switch (hkey) {
3691 case TP_HKEY_EV_UNDOCK_ACK:
3692 /* ACPI undock operation completed after wakeup */
3693 hotkey_autosleep_ack = 1;
3694 pr_info("undocked\n");
3695 hotkey_wakeup_hotunplug_complete_notify_change();
3696 return true;
3697
3698 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3699 pr_info("docked into hotplug port replicator\n");
3700 return true;
3701 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3702 pr_info("undocked from hotplug port replicator\n");
3703 return true;
3704
3705 /*
3706 * Deliberately ignore attaching and detaching the keybord cover to avoid
3707 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events
3708 * to userspace.
3709 *
3710 * Please refer to the following thread for more information and a preliminary
3711 * implementation using the GTOP ("Get Tablet OPtions") interface that could be
3712 * extended to other attachment options of the ThinkPad X1 Tablet series, such as
3713 * the Pico cartridge dock module:
3714 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/
3715 */
3716 case TP_HKEY_EV_KBD_COVER_ATTACH:
3717 case TP_HKEY_EV_KBD_COVER_DETACH:
3718 *send_acpi_ev = false;
3719 return true;
3720
3721 default:
3722 return false;
3723 }
3724 }
3725
3726 /* 0x5000-0x5FFF: human interface helpers */
hotkey_notify_usrevent(const u32 hkey,bool * send_acpi_ev)3727 static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev)
3728 {
3729 switch (hkey) {
3730 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3731 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3732 return true;
3733
3734 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3735 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3736 tpacpi_input_send_tabletsw();
3737 hotkey_tablet_mode_notify_change();
3738 *send_acpi_ev = false;
3739 return true;
3740
3741 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3742 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3743 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
3744 /* do not propagate these events */
3745 *send_acpi_ev = false;
3746 return true;
3747
3748 default:
3749 return false;
3750 }
3751 }
3752
3753 static void thermal_dump_all_sensors(void);
3754 static void palmsensor_refresh(void);
3755
3756 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
hotkey_notify_6xxx(const u32 hkey,bool * send_acpi_ev)3757 static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev)
3758 {
3759 switch (hkey) {
3760 case TP_HKEY_EV_THM_TABLE_CHANGED:
3761 pr_debug("EC reports: Thermal Table has changed\n");
3762 /* recommended action: do nothing, we don't have
3763 * Lenovo ATM information */
3764 return true;
3765 case TP_HKEY_EV_THM_CSM_COMPLETED:
3766 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
3767 /* Thermal event - pass on to event handler */
3768 tpacpi_driver_event(hkey);
3769 return true;
3770 case TP_HKEY_EV_THM_TRANSFM_CHANGED:
3771 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
3772 /* recommended action: do nothing, we don't have
3773 * Lenovo ATM information */
3774 return true;
3775 case TP_HKEY_EV_ALARM_BAT_HOT:
3776 pr_crit("THERMAL ALARM: battery is too hot!\n");
3777 /* recommended action: warn user through gui */
3778 break;
3779 case TP_HKEY_EV_ALARM_BAT_XHOT:
3780 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
3781 /* recommended action: immediate sleep/hibernate */
3782 break;
3783 case TP_HKEY_EV_ALARM_SENSOR_HOT:
3784 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
3785 /* recommended action: warn user through gui, that */
3786 /* some internal component is too hot */
3787 break;
3788 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
3789 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
3790 /* recommended action: immediate sleep/hibernate */
3791 break;
3792 case TP_HKEY_EV_AC_CHANGED:
3793 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3794 * AC status changed; can be triggered by plugging or
3795 * unplugging AC adapter, docking or undocking. */
3796
3797 fallthrough;
3798
3799 case TP_HKEY_EV_KEY_NUMLOCK:
3800 case TP_HKEY_EV_KEY_FN:
3801 /* key press events, we just ignore them as long as the EC
3802 * is still reporting them in the normal keyboard stream */
3803 *send_acpi_ev = false;
3804 return true;
3805
3806 case TP_HKEY_EV_KEY_FN_ESC:
3807 /* Get the media key status to force the status LED to update */
3808 acpi_evalf(hkey_handle, NULL, "GMKS", "v");
3809 *send_acpi_ev = false;
3810 return true;
3811
3812 case TP_HKEY_EV_TABLET_CHANGED:
3813 tpacpi_input_send_tabletsw();
3814 hotkey_tablet_mode_notify_change();
3815 *send_acpi_ev = false;
3816 return true;
3817
3818 case TP_HKEY_EV_PALM_DETECTED:
3819 case TP_HKEY_EV_PALM_UNDETECTED:
3820 /* palm detected - pass on to event handler */
3821 palmsensor_refresh();
3822 return true;
3823
3824 default:
3825 /* report simply as unknown, no sensor dump */
3826 return false;
3827 }
3828
3829 thermal_dump_all_sensors();
3830 return true;
3831 }
3832
hotkey_notify_8xxx(const u32 hkey,bool * send_acpi_ev)3833 static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev)
3834 {
3835 switch (hkey) {
3836 case TP_HKEY_EV_TRACK_DOUBLETAP:
3837 if (tp_features.trackpoint_doubletap)
3838 tpacpi_input_send_key(hkey, send_acpi_ev);
3839
3840 return true;
3841 default:
3842 return false;
3843 }
3844 }
3845
hotkey_notify(struct ibm_struct * ibm,u32 event)3846 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3847 {
3848 u32 hkey;
3849 bool send_acpi_ev;
3850 bool known_ev;
3851
3852 if (event != 0x80) {
3853 pr_err("unknown HKEY notification event %d\n", event);
3854 /* forward it to userspace, maybe it knows how to handle it */
3855 acpi_bus_generate_netlink_event(
3856 ibm->acpi->device->pnp.device_class,
3857 dev_name(&ibm->acpi->device->dev),
3858 event, 0);
3859 return;
3860 }
3861
3862 while (1) {
3863 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
3864 pr_err("failed to retrieve HKEY event\n");
3865 return;
3866 }
3867
3868 if (hkey == 0) {
3869 /* queue empty */
3870 return;
3871 }
3872
3873 send_acpi_ev = true;
3874 known_ev = false;
3875
3876 switch (hkey >> 12) {
3877 case 1:
3878 /* 0x1000-0x1FFF: key presses */
3879 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev);
3880 break;
3881 case 2:
3882 /* 0x2000-0x2FFF: Wakeup reason */
3883 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev);
3884 break;
3885 case 3:
3886 /* 0x3000-0x3FFF: bay-related wakeups */
3887 switch (hkey) {
3888 case TP_HKEY_EV_BAYEJ_ACK:
3889 hotkey_autosleep_ack = 1;
3890 pr_info("bay ejected\n");
3891 hotkey_wakeup_hotunplug_complete_notify_change();
3892 known_ev = true;
3893 break;
3894 case TP_HKEY_EV_OPTDRV_EJ:
3895 /* FIXME: kick libata if SATA link offline */
3896 known_ev = true;
3897 break;
3898 }
3899 break;
3900 case 4:
3901 /* 0x4000-0x4FFF: dock-related events */
3902 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev);
3903 break;
3904 case 5:
3905 /* 0x5000-0x5FFF: human interface helpers */
3906 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev);
3907 break;
3908 case 6:
3909 /* 0x6000-0x6FFF: thermal alarms/notices and
3910 * keyboard events */
3911 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev);
3912 break;
3913 case 7:
3914 /* 0x7000-0x7FFF: misc */
3915 if (tp_features.hotkey_wlsw &&
3916 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
3917 tpacpi_send_radiosw_update();
3918 send_acpi_ev = false;
3919 known_ev = true;
3920 }
3921 break;
3922 case 8:
3923 /* 0x8000-0x8FFF: misc2 */
3924 known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev);
3925 break;
3926 }
3927 if (!known_ev) {
3928 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3929 pr_notice("please report the conditions when this event happened to %s\n",
3930 TPACPI_MAIL);
3931 }
3932
3933 /* netlink events */
3934 if (send_acpi_ev) {
3935 acpi_bus_generate_netlink_event(
3936 ibm->acpi->device->pnp.device_class,
3937 dev_name(&ibm->acpi->device->dev),
3938 event, hkey);
3939 }
3940 }
3941 }
3942
hotkey_suspend(void)3943 static void hotkey_suspend(void)
3944 {
3945 /* Do these on suspend, we get the events on early resume! */
3946 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3947 hotkey_autosleep_ack = 0;
3948
3949 /* save previous mode of adaptive keyboard of X1 Carbon */
3950 if (tp_features.has_adaptive_kbd) {
3951 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
3952 "GTRW", "dd", 0)) {
3953 pr_err("Cannot read adaptive keyboard mode.\n");
3954 }
3955 }
3956 }
3957
hotkey_resume(void)3958 static void hotkey_resume(void)
3959 {
3960 tpacpi_disable_brightness_delay();
3961
3962 mutex_lock(&hotkey_mutex);
3963 if (hotkey_status_set(true) < 0 ||
3964 hotkey_mask_set(hotkey_acpi_mask) < 0)
3965 pr_err("error while attempting to reset the event firmware interface\n");
3966 mutex_unlock(&hotkey_mutex);
3967
3968 tpacpi_send_radiosw_update();
3969 tpacpi_input_send_tabletsw();
3970 hotkey_tablet_mode_notify_change();
3971 hotkey_wakeup_reason_notify_change();
3972 hotkey_wakeup_hotunplug_complete_notify_change();
3973 hotkey_poll_setup_safe(false);
3974
3975 /* restore previous mode of adapive keyboard of X1 Carbon */
3976 if (tp_features.has_adaptive_kbd) {
3977 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
3978 adaptive_keyboard_prev_mode)) {
3979 pr_err("Cannot set adaptive keyboard mode.\n");
3980 }
3981 }
3982 }
3983
3984 /* procfs -------------------------------------------------------------- */
hotkey_read(struct seq_file * m)3985 static int hotkey_read(struct seq_file *m)
3986 {
3987 int res, status;
3988
3989 if (!tp_features.hotkey) {
3990 seq_printf(m, "status:\t\tnot supported\n");
3991 return 0;
3992 }
3993
3994 if (mutex_lock_killable(&hotkey_mutex))
3995 return -ERESTARTSYS;
3996 res = hotkey_status_get(&status);
3997 if (!res)
3998 res = hotkey_mask_get();
3999 mutex_unlock(&hotkey_mutex);
4000 if (res)
4001 return res;
4002
4003 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
4004 if (hotkey_all_mask) {
4005 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
4006 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
4007 } else {
4008 seq_printf(m, "mask:\t\tnot supported\n");
4009 seq_printf(m, "commands:\tenable, disable, reset\n");
4010 }
4011
4012 return 0;
4013 }
4014
hotkey_enabledisable_warn(bool enable)4015 static void hotkey_enabledisable_warn(bool enable)
4016 {
4017 tpacpi_log_usertask("procfs hotkey enable/disable");
4018 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
4019 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
4020 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
4021 }
4022
hotkey_write(char * buf)4023 static int hotkey_write(char *buf)
4024 {
4025 int res;
4026 u32 mask;
4027 char *cmd;
4028
4029 if (!tp_features.hotkey)
4030 return -ENODEV;
4031
4032 if (mutex_lock_killable(&hotkey_mutex))
4033 return -ERESTARTSYS;
4034
4035 mask = hotkey_user_mask;
4036
4037 res = 0;
4038 while ((cmd = strsep(&buf, ","))) {
4039 if (strstarts(cmd, "enable")) {
4040 hotkey_enabledisable_warn(1);
4041 } else if (strstarts(cmd, "disable")) {
4042 hotkey_enabledisable_warn(0);
4043 res = -EPERM;
4044 } else if (strstarts(cmd, "reset")) {
4045 mask = (hotkey_all_mask | hotkey_source_mask)
4046 & ~hotkey_reserved_mask;
4047 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4048 /* mask set */
4049 } else if (sscanf(cmd, "%x", &mask) == 1) {
4050 /* mask set */
4051 } else {
4052 res = -EINVAL;
4053 goto errexit;
4054 }
4055 }
4056
4057 if (!res) {
4058 tpacpi_disclose_usertask("procfs hotkey",
4059 "set mask to 0x%08x\n", mask);
4060 res = hotkey_user_mask_set(mask);
4061 }
4062
4063 errexit:
4064 mutex_unlock(&hotkey_mutex);
4065 return res;
4066 }
4067
4068 static const struct acpi_device_id ibm_htk_device_ids[] = {
4069 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4070 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
4071 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
4072 {"", 0},
4073 };
4074
4075 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
4076 .hid = ibm_htk_device_ids,
4077 .notify = hotkey_notify,
4078 .handle = &hkey_handle,
4079 .type = ACPI_DEVICE_NOTIFY,
4080 };
4081
4082 static struct ibm_struct hotkey_driver_data = {
4083 .name = "hotkey",
4084 .read = hotkey_read,
4085 .write = hotkey_write,
4086 .exit = hotkey_exit,
4087 .resume = hotkey_resume,
4088 .suspend = hotkey_suspend,
4089 .acpi = &ibm_hotkey_acpidriver,
4090 };
4091
4092 /*************************************************************************
4093 * Bluetooth subdriver
4094 */
4095
4096 enum {
4097 /* ACPI GBDC/SBDC bits */
4098 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4099 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
4100 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
4101 0 = disable, 1 = enable */
4102 };
4103
4104 enum {
4105 /* ACPI \BLTH commands */
4106 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4107 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4108 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4109 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4110 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
4111 };
4112
4113 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4114
bluetooth_get_status(void)4115 static int bluetooth_get_status(void)
4116 {
4117 int status;
4118
4119 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4120 if (dbg_bluetoothemul)
4121 return (tpacpi_bluetooth_emulstate) ?
4122 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4123 #endif
4124
4125 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4126 return -EIO;
4127
4128 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
4129 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4130 }
4131
bluetooth_set_status(enum tpacpi_rfkill_state state)4132 static int bluetooth_set_status(enum tpacpi_rfkill_state state)
4133 {
4134 int status;
4135
4136 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n",
4137 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
4138
4139 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4140 if (dbg_bluetoothemul) {
4141 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
4142 return 0;
4143 }
4144 #endif
4145
4146 if (state == TPACPI_RFK_RADIO_ON)
4147 status = TP_ACPI_BLUETOOTH_RADIOSSW
4148 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4149 else
4150 status = 0;
4151
4152 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4153 return -EIO;
4154
4155 return 0;
4156 }
4157
4158 /* sysfs bluetooth enable ---------------------------------------------- */
bluetooth_enable_show(struct device * dev,struct device_attribute * attr,char * buf)4159 static ssize_t bluetooth_enable_show(struct device *dev,
4160 struct device_attribute *attr,
4161 char *buf)
4162 {
4163 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4164 attr, buf);
4165 }
4166
bluetooth_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4167 static ssize_t bluetooth_enable_store(struct device *dev,
4168 struct device_attribute *attr,
4169 const char *buf, size_t count)
4170 {
4171 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4172 attr, buf, count);
4173 }
4174
4175 static DEVICE_ATTR_RW(bluetooth_enable);
4176
4177 /* --------------------------------------------------------------------- */
4178
4179 static struct attribute *bluetooth_attributes[] = {
4180 &dev_attr_bluetooth_enable.attr,
4181 NULL
4182 };
4183
bluetooth_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)4184 static umode_t bluetooth_attr_is_visible(struct kobject *kobj,
4185 struct attribute *attr, int n)
4186 {
4187 return tp_features.bluetooth ? attr->mode : 0;
4188 }
4189
4190 static const struct attribute_group bluetooth_attr_group = {
4191 .is_visible = bluetooth_attr_is_visible,
4192 .attrs = bluetooth_attributes,
4193 };
4194
4195 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4196 .get_status = bluetooth_get_status,
4197 .set_status = bluetooth_set_status,
4198 };
4199
bluetooth_shutdown(void)4200 static void bluetooth_shutdown(void)
4201 {
4202 /* Order firmware to save current state to NVRAM */
4203 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4204 TP_ACPI_BLTH_SAVE_STATE))
4205 pr_notice("failed to save bluetooth state to NVRAM\n");
4206 else
4207 vdbg_printk(TPACPI_DBG_RFKILL,
4208 "bluetooth state saved to NVRAM\n");
4209 }
4210
bluetooth_exit(void)4211 static void bluetooth_exit(void)
4212 {
4213 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4214 bluetooth_shutdown();
4215 }
4216
4217 static const struct dmi_system_id fwbug_list[] __initconst = {
4218 {
4219 .ident = "ThinkPad E485",
4220 .driver_data = &quirk_btusb_bug,
4221 .matches = {
4222 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4223 DMI_MATCH(DMI_BOARD_NAME, "20KU"),
4224 },
4225 },
4226 {
4227 .ident = "ThinkPad E585",
4228 .driver_data = &quirk_btusb_bug,
4229 .matches = {
4230 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4231 DMI_MATCH(DMI_BOARD_NAME, "20KV"),
4232 },
4233 },
4234 {
4235 .ident = "ThinkPad A285 - 20MW",
4236 .driver_data = &quirk_btusb_bug,
4237 .matches = {
4238 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4239 DMI_MATCH(DMI_BOARD_NAME, "20MW"),
4240 },
4241 },
4242 {
4243 .ident = "ThinkPad A285 - 20MX",
4244 .driver_data = &quirk_btusb_bug,
4245 .matches = {
4246 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4247 DMI_MATCH(DMI_BOARD_NAME, "20MX"),
4248 },
4249 },
4250 {
4251 .ident = "ThinkPad A485 - 20MU",
4252 .driver_data = &quirk_btusb_bug,
4253 .matches = {
4254 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4255 DMI_MATCH(DMI_BOARD_NAME, "20MU"),
4256 },
4257 },
4258 {
4259 .ident = "ThinkPad A485 - 20MV",
4260 .driver_data = &quirk_btusb_bug,
4261 .matches = {
4262 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
4263 DMI_MATCH(DMI_BOARD_NAME, "20MV"),
4264 },
4265 },
4266 {}
4267 };
4268
4269 static const struct pci_device_id fwbug_cards_ids[] __initconst = {
4270 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
4271 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
4272 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
4273 {}
4274 };
4275
4276
have_bt_fwbug(void)4277 static int __init have_bt_fwbug(void)
4278 {
4279 /*
4280 * Some AMD based ThinkPads have a firmware bug that calling
4281 * "GBDC" will cause bluetooth on Intel wireless cards blocked
4282 */
4283 if (tp_features.quirks && tp_features.quirks->btusb_bug &&
4284 pci_dev_present(fwbug_cards_ids)) {
4285 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4286 FW_BUG "disable bluetooth subdriver for Intel cards\n");
4287 return 1;
4288 } else
4289 return 0;
4290 }
4291
bluetooth_init(struct ibm_init_struct * iibm)4292 static int __init bluetooth_init(struct ibm_init_struct *iibm)
4293 {
4294 int res;
4295 int status = 0;
4296
4297 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4298 "initializing bluetooth subdriver\n");
4299
4300 TPACPI_ACPIHANDLE_INIT(hkey);
4301
4302 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4303 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
4304 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
4305 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4306
4307 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4308 "bluetooth is %s, status 0x%02x\n",
4309 str_supported(tp_features.bluetooth),
4310 status);
4311
4312 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4313 if (dbg_bluetoothemul) {
4314 tp_features.bluetooth = 1;
4315 pr_info("bluetooth switch emulation enabled\n");
4316 } else
4317 #endif
4318 if (tp_features.bluetooth &&
4319 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4320 /* no bluetooth hardware present in system */
4321 tp_features.bluetooth = 0;
4322 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4323 "bluetooth hardware not installed\n");
4324 }
4325
4326 if (!tp_features.bluetooth)
4327 return -ENODEV;
4328
4329 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
4330 &bluetooth_tprfk_ops,
4331 RFKILL_TYPE_BLUETOOTH,
4332 TPACPI_RFK_BLUETOOTH_SW_NAME,
4333 true);
4334 return res;
4335 }
4336
4337 /* procfs -------------------------------------------------------------- */
bluetooth_read(struct seq_file * m)4338 static int bluetooth_read(struct seq_file *m)
4339 {
4340 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
4341 }
4342
bluetooth_write(char * buf)4343 static int bluetooth_write(char *buf)
4344 {
4345 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
4346 }
4347
4348 static struct ibm_struct bluetooth_driver_data = {
4349 .name = "bluetooth",
4350 .read = bluetooth_read,
4351 .write = bluetooth_write,
4352 .exit = bluetooth_exit,
4353 .shutdown = bluetooth_shutdown,
4354 };
4355
4356 /*************************************************************************
4357 * Wan subdriver
4358 */
4359
4360 enum {
4361 /* ACPI GWAN/SWAN bits */
4362 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4363 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
4364 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
4365 0 = disable, 1 = enable */
4366 };
4367
4368 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4369
wan_get_status(void)4370 static int wan_get_status(void)
4371 {
4372 int status;
4373
4374 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4375 if (dbg_wwanemul)
4376 return (tpacpi_wwan_emulstate) ?
4377 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4378 #endif
4379
4380 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4381 return -EIO;
4382
4383 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
4384 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4385 }
4386
wan_set_status(enum tpacpi_rfkill_state state)4387 static int wan_set_status(enum tpacpi_rfkill_state state)
4388 {
4389 int status;
4390
4391 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n",
4392 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
4393
4394 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4395 if (dbg_wwanemul) {
4396 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
4397 return 0;
4398 }
4399 #endif
4400
4401 if (state == TPACPI_RFK_RADIO_ON)
4402 status = TP_ACPI_WANCARD_RADIOSSW
4403 | TP_ACPI_WANCARD_RESUMECTRL;
4404 else
4405 status = 0;
4406
4407 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4408 return -EIO;
4409
4410 return 0;
4411 }
4412
4413 /* sysfs wan enable ---------------------------------------------------- */
wan_enable_show(struct device * dev,struct device_attribute * attr,char * buf)4414 static ssize_t wan_enable_show(struct device *dev,
4415 struct device_attribute *attr,
4416 char *buf)
4417 {
4418 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4419 attr, buf);
4420 }
4421
wan_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4422 static ssize_t wan_enable_store(struct device *dev,
4423 struct device_attribute *attr,
4424 const char *buf, size_t count)
4425 {
4426 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4427 attr, buf, count);
4428 }
4429
4430 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4431 wan_enable_show, wan_enable_store);
4432
4433 /* --------------------------------------------------------------------- */
4434
4435 static struct attribute *wan_attributes[] = {
4436 &dev_attr_wwan_enable.attr,
4437 NULL
4438 };
4439
wan_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)4440 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
4441 int n)
4442 {
4443 return tp_features.wan ? attr->mode : 0;
4444 }
4445
4446 static const struct attribute_group wan_attr_group = {
4447 .is_visible = wan_attr_is_visible,
4448 .attrs = wan_attributes,
4449 };
4450
4451 static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4452 .get_status = wan_get_status,
4453 .set_status = wan_set_status,
4454 };
4455
wan_shutdown(void)4456 static void wan_shutdown(void)
4457 {
4458 /* Order firmware to save current state to NVRAM */
4459 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4460 TP_ACPI_WGSV_SAVE_STATE))
4461 pr_notice("failed to save WWAN state to NVRAM\n");
4462 else
4463 vdbg_printk(TPACPI_DBG_RFKILL,
4464 "WWAN state saved to NVRAM\n");
4465 }
4466
wan_exit(void)4467 static void wan_exit(void)
4468 {
4469 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4470 wan_shutdown();
4471 }
4472
wan_init(struct ibm_init_struct * iibm)4473 static int __init wan_init(struct ibm_init_struct *iibm)
4474 {
4475 int res;
4476 int status = 0;
4477
4478 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4479 "initializing wan subdriver\n");
4480
4481 TPACPI_ACPIHANDLE_INIT(hkey);
4482
4483 tp_features.wan = hkey_handle &&
4484 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4485
4486 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4487 "wan is %s, status 0x%02x\n",
4488 str_supported(tp_features.wan),
4489 status);
4490
4491 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4492 if (dbg_wwanemul) {
4493 tp_features.wan = 1;
4494 pr_info("wwan switch emulation enabled\n");
4495 } else
4496 #endif
4497 if (tp_features.wan &&
4498 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4499 /* no wan hardware present in system */
4500 tp_features.wan = 0;
4501 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4502 "wan hardware not installed\n");
4503 }
4504
4505 if (!tp_features.wan)
4506 return -ENODEV;
4507
4508 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
4509 &wan_tprfk_ops,
4510 RFKILL_TYPE_WWAN,
4511 TPACPI_RFK_WWAN_SW_NAME,
4512 true);
4513 return res;
4514 }
4515
4516 /* procfs -------------------------------------------------------------- */
wan_read(struct seq_file * m)4517 static int wan_read(struct seq_file *m)
4518 {
4519 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
4520 }
4521
wan_write(char * buf)4522 static int wan_write(char *buf)
4523 {
4524 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
4525 }
4526
4527 static struct ibm_struct wan_driver_data = {
4528 .name = "wan",
4529 .read = wan_read,
4530 .write = wan_write,
4531 .exit = wan_exit,
4532 .shutdown = wan_shutdown,
4533 };
4534
4535 /*************************************************************************
4536 * UWB subdriver
4537 */
4538
4539 enum {
4540 /* ACPI GUWB/SUWB bits */
4541 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4542 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4543 };
4544
4545 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4546
uwb_get_status(void)4547 static int uwb_get_status(void)
4548 {
4549 int status;
4550
4551 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4552 if (dbg_uwbemul)
4553 return (tpacpi_uwb_emulstate) ?
4554 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4555 #endif
4556
4557 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4558 return -EIO;
4559
4560 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
4561 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4562 }
4563
uwb_set_status(enum tpacpi_rfkill_state state)4564 static int uwb_set_status(enum tpacpi_rfkill_state state)
4565 {
4566 int status;
4567
4568 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n",
4569 str_enable_disable(state == TPACPI_RFK_RADIO_ON));
4570
4571 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4572 if (dbg_uwbemul) {
4573 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
4574 return 0;
4575 }
4576 #endif
4577
4578 if (state == TPACPI_RFK_RADIO_ON)
4579 status = TP_ACPI_UWB_RADIOSSW;
4580 else
4581 status = 0;
4582
4583 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4584 return -EIO;
4585
4586 return 0;
4587 }
4588
4589 /* --------------------------------------------------------------------- */
4590
4591 static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4592 .get_status = uwb_get_status,
4593 .set_status = uwb_set_status,
4594 };
4595
uwb_exit(void)4596 static void uwb_exit(void)
4597 {
4598 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
4599 }
4600
uwb_init(struct ibm_init_struct * iibm)4601 static int __init uwb_init(struct ibm_init_struct *iibm)
4602 {
4603 int res;
4604 int status = 0;
4605
4606 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4607 "initializing uwb subdriver\n");
4608
4609 TPACPI_ACPIHANDLE_INIT(hkey);
4610
4611 tp_features.uwb = hkey_handle &&
4612 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4613
4614 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4615 "uwb is %s, status 0x%02x\n",
4616 str_supported(tp_features.uwb),
4617 status);
4618
4619 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4620 if (dbg_uwbemul) {
4621 tp_features.uwb = 1;
4622 pr_info("uwb switch emulation enabled\n");
4623 } else
4624 #endif
4625 if (tp_features.uwb &&
4626 !(status & TP_ACPI_UWB_HWPRESENT)) {
4627 /* no uwb hardware present in system */
4628 tp_features.uwb = 0;
4629 dbg_printk(TPACPI_DBG_INIT,
4630 "uwb hardware not installed\n");
4631 }
4632
4633 if (!tp_features.uwb)
4634 return -ENODEV;
4635
4636 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
4637 &uwb_tprfk_ops,
4638 RFKILL_TYPE_UWB,
4639 TPACPI_RFK_UWB_SW_NAME,
4640 false);
4641 return res;
4642 }
4643
4644 static struct ibm_struct uwb_driver_data = {
4645 .name = "uwb",
4646 .exit = uwb_exit,
4647 .flags.experimental = 1,
4648 };
4649
4650 /*************************************************************************
4651 * Video subdriver
4652 */
4653
4654 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4655
4656 enum video_access_mode {
4657 TPACPI_VIDEO_NONE = 0,
4658 TPACPI_VIDEO_570, /* 570 */
4659 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4660 TPACPI_VIDEO_NEW, /* all others */
4661 };
4662
4663 enum { /* video status flags, based on VIDEO_570 */
4664 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4665 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4666 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4667 };
4668
4669 enum { /* TPACPI_VIDEO_570 constants */
4670 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4671 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4672 * video_status_flags */
4673 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4674 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4675 };
4676
4677 static enum video_access_mode video_supported;
4678 static int video_orig_autosw;
4679
4680 static int video_autosw_get(void);
4681 static int video_autosw_set(int enable);
4682
4683 TPACPI_HANDLE(vid, root,
4684 "\\_SB.PCI.AGP.VGA", /* 570 */
4685 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4686 "\\_SB.PCI0.VID0", /* 770e */
4687 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4688 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4689 "\\_SB.PCI0.AGP.VID", /* all others */
4690 ); /* R30, R31 */
4691
4692 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4693
video_init(struct ibm_init_struct * iibm)4694 static int __init video_init(struct ibm_init_struct *iibm)
4695 {
4696 int ivga;
4697
4698 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4699
4700 TPACPI_ACPIHANDLE_INIT(vid);
4701 if (tpacpi_is_ibm())
4702 TPACPI_ACPIHANDLE_INIT(vid2);
4703
4704 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4705 /* G41, assume IVGA doesn't change */
4706 vid_handle = vid2_handle;
4707
4708 if (!vid_handle)
4709 /* video switching not supported on R30, R31 */
4710 video_supported = TPACPI_VIDEO_NONE;
4711 else if (tpacpi_is_ibm() &&
4712 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
4713 /* 570 */
4714 video_supported = TPACPI_VIDEO_570;
4715 else if (tpacpi_is_ibm() &&
4716 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
4717 /* 600e/x, 770e, 770x */
4718 video_supported = TPACPI_VIDEO_770;
4719 else
4720 /* all others */
4721 video_supported = TPACPI_VIDEO_NEW;
4722
4723 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4724 str_supported(video_supported != TPACPI_VIDEO_NONE),
4725 video_supported);
4726
4727 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV;
4728 }
4729
video_exit(void)4730 static void video_exit(void)
4731 {
4732 dbg_printk(TPACPI_DBG_EXIT,
4733 "restoring original video autoswitch mode\n");
4734 if (video_autosw_set(video_orig_autosw))
4735 pr_err("error while trying to restore original video autoswitch mode\n");
4736 }
4737
video_outputsw_get(void)4738 static int video_outputsw_get(void)
4739 {
4740 int status = 0;
4741 int i;
4742
4743 switch (video_supported) {
4744 case TPACPI_VIDEO_570:
4745 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4746 TP_ACPI_VIDEO_570_PHSCMD))
4747 return -EIO;
4748 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4749 break;
4750 case TPACPI_VIDEO_770:
4751 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4752 return -EIO;
4753 if (i)
4754 status |= TP_ACPI_VIDEO_S_LCD;
4755 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4756 return -EIO;
4757 if (i)
4758 status |= TP_ACPI_VIDEO_S_CRT;
4759 break;
4760 case TPACPI_VIDEO_NEW:
4761 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4762 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4763 return -EIO;
4764 if (i)
4765 status |= TP_ACPI_VIDEO_S_CRT;
4766
4767 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4768 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4769 return -EIO;
4770 if (i)
4771 status |= TP_ACPI_VIDEO_S_LCD;
4772 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4773 return -EIO;
4774 if (i)
4775 status |= TP_ACPI_VIDEO_S_DVI;
4776 break;
4777 default:
4778 return -ENOSYS;
4779 }
4780
4781 return status;
4782 }
4783
video_outputsw_set(int status)4784 static int video_outputsw_set(int status)
4785 {
4786 int autosw;
4787 int res = 0;
4788
4789 switch (video_supported) {
4790 case TPACPI_VIDEO_570:
4791 res = acpi_evalf(NULL, NULL,
4792 "\\_SB.PHS2", "vdd",
4793 TP_ACPI_VIDEO_570_PHS2CMD,
4794 status | TP_ACPI_VIDEO_570_PHS2SET);
4795 break;
4796 case TPACPI_VIDEO_770:
4797 autosw = video_autosw_get();
4798 if (autosw < 0)
4799 return autosw;
4800
4801 res = video_autosw_set(1);
4802 if (res)
4803 return res;
4804 res = acpi_evalf(vid_handle, NULL,
4805 "ASWT", "vdd", status * 0x100, 0);
4806 if (!autosw && video_autosw_set(autosw)) {
4807 pr_err("video auto-switch left enabled due to error\n");
4808 return -EIO;
4809 }
4810 break;
4811 case TPACPI_VIDEO_NEW:
4812 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
4813 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
4814 break;
4815 default:
4816 return -ENOSYS;
4817 }
4818
4819 return (res) ? 0 : -EIO;
4820 }
4821
video_autosw_get(void)4822 static int video_autosw_get(void)
4823 {
4824 int autosw = 0;
4825
4826 switch (video_supported) {
4827 case TPACPI_VIDEO_570:
4828 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4829 return -EIO;
4830 break;
4831 case TPACPI_VIDEO_770:
4832 case TPACPI_VIDEO_NEW:
4833 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4834 return -EIO;
4835 break;
4836 default:
4837 return -ENOSYS;
4838 }
4839
4840 return autosw & 1;
4841 }
4842
video_autosw_set(int enable)4843 static int video_autosw_set(int enable)
4844 {
4845 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
4846 return -EIO;
4847 return 0;
4848 }
4849
video_outputsw_cycle(void)4850 static int video_outputsw_cycle(void)
4851 {
4852 int autosw = video_autosw_get();
4853 int res;
4854
4855 if (autosw < 0)
4856 return autosw;
4857
4858 switch (video_supported) {
4859 case TPACPI_VIDEO_570:
4860 res = video_autosw_set(1);
4861 if (res)
4862 return res;
4863 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4864 break;
4865 case TPACPI_VIDEO_770:
4866 case TPACPI_VIDEO_NEW:
4867 res = video_autosw_set(1);
4868 if (res)
4869 return res;
4870 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4871 break;
4872 default:
4873 return -ENOSYS;
4874 }
4875 if (!autosw && video_autosw_set(autosw)) {
4876 pr_err("video auto-switch left enabled due to error\n");
4877 return -EIO;
4878 }
4879
4880 return (res) ? 0 : -EIO;
4881 }
4882
video_expand_toggle(void)4883 static int video_expand_toggle(void)
4884 {
4885 switch (video_supported) {
4886 case TPACPI_VIDEO_570:
4887 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
4888 0 : -EIO;
4889 case TPACPI_VIDEO_770:
4890 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
4891 0 : -EIO;
4892 case TPACPI_VIDEO_NEW:
4893 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
4894 0 : -EIO;
4895 default:
4896 return -ENOSYS;
4897 }
4898 /* not reached */
4899 }
4900
video_read(struct seq_file * m)4901 static int video_read(struct seq_file *m)
4902 {
4903 int status, autosw;
4904
4905 if (video_supported == TPACPI_VIDEO_NONE) {
4906 seq_printf(m, "status:\t\tnot supported\n");
4907 return 0;
4908 }
4909
4910 /* Even reads can crash X.org, so... */
4911 if (!capable(CAP_SYS_ADMIN))
4912 return -EPERM;
4913
4914 status = video_outputsw_get();
4915 if (status < 0)
4916 return status;
4917
4918 autosw = video_autosw_get();
4919 if (autosw < 0)
4920 return autosw;
4921
4922 seq_printf(m, "status:\t\tsupported\n");
4923 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
4924 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1)));
4925 if (video_supported == TPACPI_VIDEO_NEW)
4926 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3)));
4927 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0)));
4928 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4929 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
4930 if (video_supported == TPACPI_VIDEO_NEW)
4931 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4932 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4933 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
4934
4935 return 0;
4936 }
4937
video_write(char * buf)4938 static int video_write(char *buf)
4939 {
4940 char *cmd;
4941 int enable, disable, status;
4942 int res;
4943
4944 if (video_supported == TPACPI_VIDEO_NONE)
4945 return -ENODEV;
4946
4947 /* Even reads can crash X.org, let alone writes... */
4948 if (!capable(CAP_SYS_ADMIN))
4949 return -EPERM;
4950
4951 enable = 0;
4952 disable = 0;
4953
4954 while ((cmd = strsep(&buf, ","))) {
4955 if (strstarts(cmd, "lcd_enable")) {
4956 enable |= TP_ACPI_VIDEO_S_LCD;
4957 } else if (strstarts(cmd, "lcd_disable")) {
4958 disable |= TP_ACPI_VIDEO_S_LCD;
4959 } else if (strstarts(cmd, "crt_enable")) {
4960 enable |= TP_ACPI_VIDEO_S_CRT;
4961 } else if (strstarts(cmd, "crt_disable")) {
4962 disable |= TP_ACPI_VIDEO_S_CRT;
4963 } else if (video_supported == TPACPI_VIDEO_NEW &&
4964 strstarts(cmd, "dvi_enable")) {
4965 enable |= TP_ACPI_VIDEO_S_DVI;
4966 } else if (video_supported == TPACPI_VIDEO_NEW &&
4967 strstarts(cmd, "dvi_disable")) {
4968 disable |= TP_ACPI_VIDEO_S_DVI;
4969 } else if (strstarts(cmd, "auto_enable")) {
4970 res = video_autosw_set(1);
4971 if (res)
4972 return res;
4973 } else if (strstarts(cmd, "auto_disable")) {
4974 res = video_autosw_set(0);
4975 if (res)
4976 return res;
4977 } else if (strstarts(cmd, "video_switch")) {
4978 res = video_outputsw_cycle();
4979 if (res)
4980 return res;
4981 } else if (strstarts(cmd, "expand_toggle")) {
4982 res = video_expand_toggle();
4983 if (res)
4984 return res;
4985 } else
4986 return -EINVAL;
4987 }
4988
4989 if (enable || disable) {
4990 status = video_outputsw_get();
4991 if (status < 0)
4992 return status;
4993 res = video_outputsw_set((status & ~disable) | enable);
4994 if (res)
4995 return res;
4996 }
4997
4998 return 0;
4999 }
5000
5001 static struct ibm_struct video_driver_data = {
5002 .name = "video",
5003 .read = video_read,
5004 .write = video_write,
5005 .exit = video_exit,
5006 };
5007
5008 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
5009
5010 /*************************************************************************
5011 * Keyboard backlight subdriver
5012 */
5013
5014 static enum led_brightness kbdlight_brightness;
5015 static DEFINE_MUTEX(kbdlight_mutex);
5016
kbdlight_set_level(int level)5017 static int kbdlight_set_level(int level)
5018 {
5019 int ret = 0;
5020
5021 if (!hkey_handle)
5022 return -ENXIO;
5023
5024 mutex_lock(&kbdlight_mutex);
5025
5026 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
5027 ret = -EIO;
5028 else
5029 kbdlight_brightness = level;
5030
5031 mutex_unlock(&kbdlight_mutex);
5032
5033 return ret;
5034 }
5035
kbdlight_get_level(void)5036 static int kbdlight_get_level(void)
5037 {
5038 int status = 0;
5039
5040 if (!hkey_handle)
5041 return -ENXIO;
5042
5043 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
5044 return -EIO;
5045
5046 if (status < 0)
5047 return status;
5048
5049 return status & 0x3;
5050 }
5051
kbdlight_is_supported(void)5052 static bool kbdlight_is_supported(void)
5053 {
5054 int status = 0;
5055
5056 if (!hkey_handle)
5057 return false;
5058
5059 if (!acpi_has_method(hkey_handle, "MLCG")) {
5060 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
5061 return false;
5062 }
5063
5064 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
5065 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
5066 return false;
5067 }
5068
5069 if (status < 0) {
5070 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
5071 return false;
5072 }
5073
5074 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
5075 /*
5076 * Guessed test for keyboard backlight:
5077 *
5078 * Machines with backlight keyboard return:
5079 * b010100000010000000XX - ThinkPad X1 Carbon 3rd
5080 * b110100010010000000XX - ThinkPad x230
5081 * b010100000010000000XX - ThinkPad x240
5082 * b010100000010000000XX - ThinkPad W541
5083 * (XX is current backlight level)
5084 *
5085 * Machines without backlight keyboard return:
5086 * b10100001000000000000 - ThinkPad x230
5087 * b10110001000000000000 - ThinkPad E430
5088 * b00000000000000000000 - ThinkPad E450
5089 *
5090 * Candidate BITs for detection test (XOR):
5091 * b01000000001000000000
5092 * ^
5093 */
5094 return status & BIT(9);
5095 }
5096
kbdlight_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5097 static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
5098 enum led_brightness brightness)
5099 {
5100 return kbdlight_set_level(brightness);
5101 }
5102
kbdlight_sysfs_get(struct led_classdev * led_cdev)5103 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
5104 {
5105 int level;
5106
5107 level = kbdlight_get_level();
5108 if (level < 0)
5109 return 0;
5110
5111 return level;
5112 }
5113
5114 static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
5115 .led_classdev = {
5116 .name = "tpacpi::kbd_backlight",
5117 .max_brightness = 2,
5118 .flags = LED_BRIGHT_HW_CHANGED,
5119 .brightness_set_blocking = &kbdlight_sysfs_set,
5120 .brightness_get = &kbdlight_sysfs_get,
5121 }
5122 };
5123
kbdlight_init(struct ibm_init_struct * iibm)5124 static int __init kbdlight_init(struct ibm_init_struct *iibm)
5125 {
5126 int rc;
5127
5128 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
5129
5130 TPACPI_ACPIHANDLE_INIT(hkey);
5131
5132 if (!kbdlight_is_supported()) {
5133 tp_features.kbdlight = 0;
5134 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
5135 return -ENODEV;
5136 }
5137
5138 kbdlight_brightness = kbdlight_sysfs_get(NULL);
5139 tp_features.kbdlight = 1;
5140
5141 rc = led_classdev_register(&tpacpi_pdev->dev,
5142 &tpacpi_led_kbdlight.led_classdev);
5143 if (rc < 0) {
5144 tp_features.kbdlight = 0;
5145 return rc;
5146 }
5147
5148 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
5149 TP_ACPI_HKEY_KBD_LIGHT_MASK);
5150 return 0;
5151 }
5152
kbdlight_exit(void)5153 static void kbdlight_exit(void)
5154 {
5155 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
5156 }
5157
kbdlight_set_level_and_update(int level)5158 static int kbdlight_set_level_and_update(int level)
5159 {
5160 int ret;
5161 struct led_classdev *led_cdev;
5162
5163 ret = kbdlight_set_level(level);
5164 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5165
5166 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
5167 led_cdev->brightness = level;
5168
5169 return ret;
5170 }
5171
kbdlight_read(struct seq_file * m)5172 static int kbdlight_read(struct seq_file *m)
5173 {
5174 int level;
5175
5176 if (!tp_features.kbdlight) {
5177 seq_printf(m, "status:\t\tnot supported\n");
5178 } else {
5179 level = kbdlight_get_level();
5180 if (level < 0)
5181 seq_printf(m, "status:\t\terror %d\n", level);
5182 else
5183 seq_printf(m, "status:\t\t%d\n", level);
5184 seq_printf(m, "commands:\t0, 1, 2\n");
5185 }
5186
5187 return 0;
5188 }
5189
kbdlight_write(char * buf)5190 static int kbdlight_write(char *buf)
5191 {
5192 char *cmd;
5193 int res, level = -EINVAL;
5194
5195 if (!tp_features.kbdlight)
5196 return -ENODEV;
5197
5198 while ((cmd = strsep(&buf, ","))) {
5199 res = kstrtoint(cmd, 10, &level);
5200 if (res < 0)
5201 return res;
5202 }
5203
5204 if (level >= 3 || level < 0)
5205 return -EINVAL;
5206
5207 return kbdlight_set_level_and_update(level);
5208 }
5209
kbdlight_suspend(void)5210 static void kbdlight_suspend(void)
5211 {
5212 struct led_classdev *led_cdev;
5213
5214 if (!tp_features.kbdlight)
5215 return;
5216
5217 led_cdev = &tpacpi_led_kbdlight.led_classdev;
5218 led_update_brightness(led_cdev);
5219 led_classdev_suspend(led_cdev);
5220 }
5221
kbdlight_resume(void)5222 static void kbdlight_resume(void)
5223 {
5224 if (!tp_features.kbdlight)
5225 return;
5226
5227 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
5228 }
5229
5230 static struct ibm_struct kbdlight_driver_data = {
5231 .name = "kbdlight",
5232 .read = kbdlight_read,
5233 .write = kbdlight_write,
5234 .suspend = kbdlight_suspend,
5235 .resume = kbdlight_resume,
5236 .exit = kbdlight_exit,
5237 };
5238
5239 /*************************************************************************
5240 * Light (thinklight) subdriver
5241 */
5242
5243 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
5244 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
5245
light_get_status(void)5246 static int light_get_status(void)
5247 {
5248 int status = 0;
5249
5250 if (tp_features.light_status) {
5251 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
5252 return -EIO;
5253 return (!!status);
5254 }
5255
5256 return -ENXIO;
5257 }
5258
light_set_status(int status)5259 static int light_set_status(int status)
5260 {
5261 int rc;
5262
5263 if (tp_features.light) {
5264 if (cmos_handle) {
5265 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
5266 (status) ?
5267 TP_CMOS_THINKLIGHT_ON :
5268 TP_CMOS_THINKLIGHT_OFF);
5269 } else {
5270 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
5271 (status) ? 1 : 0);
5272 }
5273 return (rc) ? 0 : -EIO;
5274 }
5275
5276 return -ENXIO;
5277 }
5278
light_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5279 static int light_sysfs_set(struct led_classdev *led_cdev,
5280 enum led_brightness brightness)
5281 {
5282 return light_set_status((brightness != LED_OFF) ?
5283 TPACPI_LED_ON : TPACPI_LED_OFF);
5284 }
5285
light_sysfs_get(struct led_classdev * led_cdev)5286 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
5287 {
5288 return (light_get_status() == 1) ? LED_ON : LED_OFF;
5289 }
5290
5291 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
5292 .led_classdev = {
5293 .name = "tpacpi::thinklight",
5294 .max_brightness = 1,
5295 .brightness_set_blocking = &light_sysfs_set,
5296 .brightness_get = &light_sysfs_get,
5297 }
5298 };
5299
light_init(struct ibm_init_struct * iibm)5300 static int __init light_init(struct ibm_init_struct *iibm)
5301 {
5302 int rc;
5303
5304 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5305
5306 if (tpacpi_is_ibm()) {
5307 TPACPI_ACPIHANDLE_INIT(ledb);
5308 TPACPI_ACPIHANDLE_INIT(lght);
5309 }
5310 TPACPI_ACPIHANDLE_INIT(cmos);
5311
5312 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
5313 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
5314
5315 if (tp_features.light)
5316 /* light status not supported on
5317 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
5318 tp_features.light_status =
5319 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
5320
5321 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5322 str_supported(tp_features.light),
5323 str_supported(tp_features.light_status));
5324
5325 if (!tp_features.light)
5326 return -ENODEV;
5327
5328 rc = led_classdev_register(&tpacpi_pdev->dev,
5329 &tpacpi_led_thinklight.led_classdev);
5330
5331 if (rc < 0) {
5332 tp_features.light = 0;
5333 tp_features.light_status = 0;
5334 } else {
5335 rc = 0;
5336 }
5337
5338 return rc;
5339 }
5340
light_exit(void)5341 static void light_exit(void)
5342 {
5343 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
5344 }
5345
light_read(struct seq_file * m)5346 static int light_read(struct seq_file *m)
5347 {
5348 int status;
5349
5350 if (!tp_features.light) {
5351 seq_printf(m, "status:\t\tnot supported\n");
5352 } else if (!tp_features.light_status) {
5353 seq_printf(m, "status:\t\tunknown\n");
5354 seq_printf(m, "commands:\ton, off\n");
5355 } else {
5356 status = light_get_status();
5357 if (status < 0)
5358 return status;
5359 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0)));
5360 seq_printf(m, "commands:\ton, off\n");
5361 }
5362
5363 return 0;
5364 }
5365
light_write(char * buf)5366 static int light_write(char *buf)
5367 {
5368 char *cmd;
5369 int newstatus = 0;
5370
5371 if (!tp_features.light)
5372 return -ENODEV;
5373
5374 while ((cmd = strsep(&buf, ","))) {
5375 if (strstarts(cmd, "on")) {
5376 newstatus = 1;
5377 } else if (strstarts(cmd, "off")) {
5378 newstatus = 0;
5379 } else
5380 return -EINVAL;
5381 }
5382
5383 return light_set_status(newstatus);
5384 }
5385
5386 static struct ibm_struct light_driver_data = {
5387 .name = "light",
5388 .read = light_read,
5389 .write = light_write,
5390 .exit = light_exit,
5391 };
5392
5393 /*************************************************************************
5394 * CMOS subdriver
5395 */
5396
5397 /* sysfs cmos_command -------------------------------------------------- */
cmos_command_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)5398 static ssize_t cmos_command_store(struct device *dev,
5399 struct device_attribute *attr,
5400 const char *buf, size_t count)
5401 {
5402 unsigned long cmos_cmd;
5403 int res;
5404
5405 if (parse_strtoul(buf, 21, &cmos_cmd))
5406 return -EINVAL;
5407
5408 res = issue_thinkpad_cmos_command(cmos_cmd);
5409 return (res) ? res : count;
5410 }
5411
5412 static DEVICE_ATTR_WO(cmos_command);
5413
5414 static struct attribute *cmos_attributes[] = {
5415 &dev_attr_cmos_command.attr,
5416 NULL
5417 };
5418
cmos_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)5419 static umode_t cmos_attr_is_visible(struct kobject *kobj,
5420 struct attribute *attr, int n)
5421 {
5422 return cmos_handle ? attr->mode : 0;
5423 }
5424
5425 static const struct attribute_group cmos_attr_group = {
5426 .is_visible = cmos_attr_is_visible,
5427 .attrs = cmos_attributes,
5428 };
5429
5430 /* --------------------------------------------------------------------- */
5431
cmos_init(struct ibm_init_struct * iibm)5432 static int __init cmos_init(struct ibm_init_struct *iibm)
5433 {
5434 vdbg_printk(TPACPI_DBG_INIT,
5435 "initializing cmos commands subdriver\n");
5436
5437 TPACPI_ACPIHANDLE_INIT(cmos);
5438
5439 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5440 str_supported(cmos_handle != NULL));
5441
5442 return cmos_handle ? 0 : -ENODEV;
5443 }
5444
cmos_read(struct seq_file * m)5445 static int cmos_read(struct seq_file *m)
5446 {
5447 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5448 R30, R31, T20-22, X20-21 */
5449 if (!cmos_handle)
5450 seq_printf(m, "status:\t\tnot supported\n");
5451 else {
5452 seq_printf(m, "status:\t\tsupported\n");
5453 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
5454 }
5455
5456 return 0;
5457 }
5458
cmos_write(char * buf)5459 static int cmos_write(char *buf)
5460 {
5461 char *cmd;
5462 int cmos_cmd, res;
5463
5464 while ((cmd = strsep(&buf, ","))) {
5465 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5466 cmos_cmd >= 0 && cmos_cmd <= 21) {
5467 /* cmos_cmd set */
5468 } else
5469 return -EINVAL;
5470
5471 res = issue_thinkpad_cmos_command(cmos_cmd);
5472 if (res)
5473 return res;
5474 }
5475
5476 return 0;
5477 }
5478
5479 static struct ibm_struct cmos_driver_data = {
5480 .name = "cmos",
5481 .read = cmos_read,
5482 .write = cmos_write,
5483 };
5484
5485 /*************************************************************************
5486 * LED subdriver
5487 */
5488
5489 enum led_access_mode {
5490 TPACPI_LED_NONE = 0,
5491 TPACPI_LED_570, /* 570 */
5492 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5493 TPACPI_LED_NEW, /* all others */
5494 };
5495
5496 enum { /* For TPACPI_LED_OLD */
5497 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5498 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5499 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5500 };
5501
5502 static enum led_access_mode led_supported;
5503
5504 static acpi_handle led_handle;
5505
5506 #define TPACPI_LED_NUMLEDS 16
5507 static struct tpacpi_led_classdev *tpacpi_leds;
5508 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
5509 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
5510 /* there's a limit of 19 chars + NULL before 2.6.26 */
5511 "tpacpi::power",
5512 "tpacpi:orange:batt",
5513 "tpacpi:green:batt",
5514 "tpacpi::dock_active",
5515 "tpacpi::bay_active",
5516 "tpacpi::dock_batt",
5517 "tpacpi::unknown_led",
5518 "tpacpi::standby",
5519 "tpacpi::dock_status1",
5520 "tpacpi::dock_status2",
5521 "tpacpi::lid_logo_dot",
5522 "tpacpi::unknown_led3",
5523 "tpacpi::thinkvantage",
5524 };
5525 #define TPACPI_SAFE_LEDS 0x1481U
5526
tpacpi_is_led_restricted(const unsigned int led)5527 static inline bool tpacpi_is_led_restricted(const unsigned int led)
5528 {
5529 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5530 return false;
5531 #else
5532 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
5533 #endif
5534 }
5535
led_get_status(const unsigned int led)5536 static int led_get_status(const unsigned int led)
5537 {
5538 int status;
5539 enum led_status_t led_s;
5540
5541 switch (led_supported) {
5542 case TPACPI_LED_570:
5543 if (!acpi_evalf(ec_handle,
5544 &status, "GLED", "dd", 1 << led))
5545 return -EIO;
5546 led_s = (status == 0) ?
5547 TPACPI_LED_OFF :
5548 ((status == 1) ?
5549 TPACPI_LED_ON :
5550 TPACPI_LED_BLINK);
5551 tpacpi_led_state_cache[led] = led_s;
5552 return led_s;
5553 default:
5554 return -ENXIO;
5555 }
5556
5557 /* not reached */
5558 }
5559
led_set_status(const unsigned int led,const enum led_status_t ledstatus)5560 static int led_set_status(const unsigned int led,
5561 const enum led_status_t ledstatus)
5562 {
5563 /* off, on, blink. Index is led_status_t */
5564 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5565 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
5566
5567 int rc = 0;
5568
5569 switch (led_supported) {
5570 case TPACPI_LED_570:
5571 /* 570 */
5572 if (unlikely(led > 7))
5573 return -EINVAL;
5574 if (unlikely(tpacpi_is_led_restricted(led)))
5575 return -EPERM;
5576 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5577 (1 << led), led_sled_arg1[ledstatus]))
5578 return -EIO;
5579 break;
5580 case TPACPI_LED_OLD:
5581 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5582 if (unlikely(led > 7))
5583 return -EINVAL;
5584 if (unlikely(tpacpi_is_led_restricted(led)))
5585 return -EPERM;
5586 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5587 if (rc >= 0)
5588 rc = ec_write(TPACPI_LED_EC_HLBL,
5589 (ledstatus == TPACPI_LED_BLINK) << led);
5590 if (rc >= 0)
5591 rc = ec_write(TPACPI_LED_EC_HLCL,
5592 (ledstatus != TPACPI_LED_OFF) << led);
5593 break;
5594 case TPACPI_LED_NEW:
5595 /* all others */
5596 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5597 return -EINVAL;
5598 if (unlikely(tpacpi_is_led_restricted(led)))
5599 return -EPERM;
5600 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5601 led, led_led_arg1[ledstatus]))
5602 return -EIO;
5603 break;
5604 default:
5605 return -ENXIO;
5606 }
5607
5608 if (!rc)
5609 tpacpi_led_state_cache[led] = ledstatus;
5610
5611 return rc;
5612 }
5613
led_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5614 static int led_sysfs_set(struct led_classdev *led_cdev,
5615 enum led_brightness brightness)
5616 {
5617 struct tpacpi_led_classdev *data = container_of(led_cdev,
5618 struct tpacpi_led_classdev, led_classdev);
5619 enum led_status_t new_state;
5620
5621 if (brightness == LED_OFF)
5622 new_state = TPACPI_LED_OFF;
5623 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5624 new_state = TPACPI_LED_ON;
5625 else
5626 new_state = TPACPI_LED_BLINK;
5627
5628 return led_set_status(data->led, new_state);
5629 }
5630
led_sysfs_blink_set(struct led_classdev * led_cdev,unsigned long * delay_on,unsigned long * delay_off)5631 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5632 unsigned long *delay_on, unsigned long *delay_off)
5633 {
5634 struct tpacpi_led_classdev *data = container_of(led_cdev,
5635 struct tpacpi_led_classdev, led_classdev);
5636
5637 /* Can we choose the flash rate? */
5638 if (*delay_on == 0 && *delay_off == 0) {
5639 /* yes. set them to the hardware blink rate (1 Hz) */
5640 *delay_on = 500; /* ms */
5641 *delay_off = 500; /* ms */
5642 } else if ((*delay_on != 500) || (*delay_off != 500))
5643 return -EINVAL;
5644
5645 return led_set_status(data->led, TPACPI_LED_BLINK);
5646 }
5647
led_sysfs_get(struct led_classdev * led_cdev)5648 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5649 {
5650 int rc;
5651
5652 struct tpacpi_led_classdev *data = container_of(led_cdev,
5653 struct tpacpi_led_classdev, led_classdev);
5654
5655 rc = led_get_status(data->led);
5656
5657 if (rc == TPACPI_LED_OFF || rc < 0)
5658 rc = LED_OFF; /* no error handling in led class :( */
5659 else
5660 rc = LED_FULL;
5661
5662 return rc;
5663 }
5664
led_exit(void)5665 static void led_exit(void)
5666 {
5667 unsigned int i;
5668
5669 for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
5670 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5671
5672 kfree(tpacpi_leds);
5673 }
5674
tpacpi_init_led(unsigned int led)5675 static int __init tpacpi_init_led(unsigned int led)
5676 {
5677 /* LEDs with no name don't get registered */
5678 if (!tpacpi_led_names[led])
5679 return 0;
5680
5681 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
5682 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5683 if (led_supported == TPACPI_LED_570)
5684 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
5685
5686 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5687 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN;
5688 tpacpi_leds[led].led = led;
5689
5690 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
5691 }
5692
5693 static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5694 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5695 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5696 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5697
5698 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5699 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5700 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5701 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5702 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5703 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5704 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5705 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5706
5707 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5708 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5709 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5710 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5711 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5712
5713 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5714 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5715 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5716 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5717
5718 /* (1) - may have excess leds enabled on MSB */
5719
5720 /* Defaults (order matters, keep last, don't reorder!) */
5721 { /* Lenovo */
5722 .vendor = PCI_VENDOR_ID_LENOVO,
5723 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5724 .quirks = 0x1fffU,
5725 },
5726 { /* IBM ThinkPads with no EC version string */
5727 .vendor = PCI_VENDOR_ID_IBM,
5728 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5729 .quirks = 0x00ffU,
5730 },
5731 { /* IBM ThinkPads with EC version string */
5732 .vendor = PCI_VENDOR_ID_IBM,
5733 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5734 .quirks = 0x00bfU,
5735 },
5736 };
5737
led_init_detect_mode(void)5738 static enum led_access_mode __init led_init_detect_mode(void)
5739 {
5740 acpi_status status;
5741
5742 if (tpacpi_is_ibm()) {
5743 /* 570 */
5744 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5745 if (ACPI_SUCCESS(status))
5746 return TPACPI_LED_570;
5747
5748 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5749 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5750 if (ACPI_SUCCESS(status))
5751 return TPACPI_LED_OLD;
5752 }
5753
5754 /* most others */
5755 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5756 if (ACPI_SUCCESS(status))
5757 return TPACPI_LED_NEW;
5758
5759 /* R30, R31, and unknown firmwares */
5760 led_handle = NULL;
5761 return TPACPI_LED_NONE;
5762 }
5763
led_init(struct ibm_init_struct * iibm)5764 static int __init led_init(struct ibm_init_struct *iibm)
5765 {
5766 unsigned int i;
5767 int rc;
5768 unsigned long useful_leds;
5769
5770 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5771
5772 led_supported = led_init_detect_mode();
5773
5774 if (led_supported != TPACPI_LED_NONE) {
5775 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5776 ARRAY_SIZE(led_useful_qtable));
5777
5778 if (!useful_leds) {
5779 led_handle = NULL;
5780 led_supported = TPACPI_LED_NONE;
5781 }
5782 }
5783
5784 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5785 str_supported(led_supported), led_supported);
5786
5787 if (led_supported == TPACPI_LED_NONE)
5788 return -ENODEV;
5789
5790 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
5791 GFP_KERNEL);
5792 if (!tpacpi_leds) {
5793 pr_err("Out of memory for LED data\n");
5794 return -ENOMEM;
5795 }
5796
5797 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5798 tpacpi_leds[i].led = -1;
5799
5800 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
5801 rc = tpacpi_init_led(i);
5802 if (rc < 0) {
5803 led_exit();
5804 return rc;
5805 }
5806 }
5807 }
5808
5809 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5810 pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
5811 #endif
5812 return 0;
5813 }
5814
5815 #define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s))
5816
led_read(struct seq_file * m)5817 static int led_read(struct seq_file *m)
5818 {
5819 if (!led_supported) {
5820 seq_printf(m, "status:\t\tnot supported\n");
5821 return 0;
5822 }
5823 seq_printf(m, "status:\t\tsupported\n");
5824
5825 if (led_supported == TPACPI_LED_570) {
5826 /* 570 */
5827 int i, status;
5828 for (i = 0; i < 8; i++) {
5829 status = led_get_status(i);
5830 if (status < 0)
5831 return -EIO;
5832 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status));
5833 }
5834 }
5835
5836 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5837
5838 return 0;
5839 }
5840
led_write(char * buf)5841 static int led_write(char *buf)
5842 {
5843 char *cmd;
5844 int led, rc;
5845 enum led_status_t s;
5846
5847 if (!led_supported)
5848 return -ENODEV;
5849
5850 while ((cmd = strsep(&buf, ","))) {
5851 if (sscanf(cmd, "%d", &led) != 1)
5852 return -EINVAL;
5853
5854 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
5855 return -ENODEV;
5856
5857 if (tpacpi_leds[led].led < 0)
5858 return -ENODEV;
5859
5860 if (strstr(cmd, "off")) {
5861 s = TPACPI_LED_OFF;
5862 } else if (strstr(cmd, "on")) {
5863 s = TPACPI_LED_ON;
5864 } else if (strstr(cmd, "blink")) {
5865 s = TPACPI_LED_BLINK;
5866 } else {
5867 return -EINVAL;
5868 }
5869
5870 rc = led_set_status(led, s);
5871 if (rc < 0)
5872 return rc;
5873 }
5874
5875 return 0;
5876 }
5877
5878 static struct ibm_struct led_driver_data = {
5879 .name = "led",
5880 .read = led_read,
5881 .write = led_write,
5882 .exit = led_exit,
5883 };
5884
5885 /*************************************************************************
5886 * Beep subdriver
5887 */
5888
5889 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
5890
5891 #define TPACPI_BEEP_Q1 0x0001
5892
5893 static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5894 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5895 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5896 };
5897
beep_init(struct ibm_init_struct * iibm)5898 static int __init beep_init(struct ibm_init_struct *iibm)
5899 {
5900 unsigned long quirks;
5901
5902 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5903
5904 TPACPI_ACPIHANDLE_INIT(beep);
5905
5906 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5907 str_supported(beep_handle != NULL));
5908
5909 quirks = tpacpi_check_quirks(beep_quirk_table,
5910 ARRAY_SIZE(beep_quirk_table));
5911
5912 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5913
5914 return (beep_handle) ? 0 : -ENODEV;
5915 }
5916
beep_read(struct seq_file * m)5917 static int beep_read(struct seq_file *m)
5918 {
5919 if (!beep_handle)
5920 seq_printf(m, "status:\t\tnot supported\n");
5921 else {
5922 seq_printf(m, "status:\t\tsupported\n");
5923 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
5924 }
5925
5926 return 0;
5927 }
5928
beep_write(char * buf)5929 static int beep_write(char *buf)
5930 {
5931 char *cmd;
5932 int beep_cmd;
5933
5934 if (!beep_handle)
5935 return -ENODEV;
5936
5937 while ((cmd = strsep(&buf, ","))) {
5938 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5939 beep_cmd >= 0 && beep_cmd <= 17) {
5940 /* beep_cmd set */
5941 } else
5942 return -EINVAL;
5943 if (tp_features.beep_needs_two_args) {
5944 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5945 beep_cmd, 0))
5946 return -EIO;
5947 } else {
5948 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5949 beep_cmd))
5950 return -EIO;
5951 }
5952 }
5953
5954 return 0;
5955 }
5956
5957 static struct ibm_struct beep_driver_data = {
5958 .name = "beep",
5959 .read = beep_read,
5960 .write = beep_write,
5961 };
5962
5963 /*************************************************************************
5964 * Thermal subdriver
5965 */
5966
5967 enum thermal_access_mode {
5968 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5969 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5970 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5971 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5972 TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */
5973 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5974 };
5975
5976 enum { /* TPACPI_THERMAL_TPEC_* */
5977 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5978 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5979 TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */
5980 TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */
5981 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
5982 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5983
5984 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
5985 };
5986
5987
5988 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5989 struct ibm_thermal_sensors_struct {
5990 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5991 };
5992
5993 static const struct tpacpi_quirk thermal_quirk_table[] __initconst = {
5994 /* Non-standard address for thermal registers on some ThinkPads */
5995 TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */
5996 TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/
5997 TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */
5998 TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/
5999 TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */
6000 TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/
6001 TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/
6002 TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/
6003 TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/
6004 };
6005
6006 static enum thermal_access_mode thermal_read_mode;
6007 static bool thermal_use_labels;
6008 static bool thermal_with_ns_address; /* Non-standard thermal reg address */
6009
6010 /* Function to check thermal read mode */
thermal_read_mode_check(void)6011 static enum thermal_access_mode __init thermal_read_mode_check(void)
6012 {
6013 u8 t, ta1, ta2, ver = 0;
6014 int i;
6015 int acpi_tmp7;
6016
6017 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
6018
6019 if (thinkpad_id.ec_model) {
6020 /*
6021 * Direct EC access mode: sensors at registers 0x78-0x7F,
6022 * 0xC0-0xC7. Registers return 0x00 for non-implemented,
6023 * thermal sensors return 0x80 when not available.
6024 *
6025 * In some special cases (when Power Supply ID is 0xC2)
6026 * above rule causes thermal control issues. Offset 0xEF
6027 * determines EC version. 0xC0-0xC7 are not thermal registers
6028 * in Ver 3.
6029 */
6030 if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
6031 pr_warn("Thinkpad ACPI EC unable to access EC version\n");
6032
6033 /* Quirks to check non-standard EC */
6034 thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table,
6035 ARRAY_SIZE(thermal_quirk_table));
6036
6037 /* Support for Thinkpads with non-standard address */
6038 if (thermal_with_ns_address) {
6039 pr_info("ECFW with non-standard thermal registers found\n");
6040 return TPACPI_THERMAL_TPEC_12;
6041 }
6042
6043 ta1 = ta2 = 0;
6044 for (i = 0; i < 8; i++) {
6045 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
6046 ta1 |= t;
6047 } else {
6048 ta1 = 0;
6049 break;
6050 }
6051 if (ver < 3) {
6052 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
6053 ta2 |= t;
6054 } else {
6055 ta1 = 0;
6056 break;
6057 }
6058 }
6059 }
6060
6061 if (ta1 == 0) {
6062 /* This is sheer paranoia, but we handle it anyway */
6063 if (acpi_tmp7) {
6064 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
6065 return TPACPI_THERMAL_ACPI_TMP07;
6066 }
6067 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
6068 return TPACPI_THERMAL_NONE;
6069 }
6070
6071 if (ver >= 3) {
6072 thermal_use_labels = true;
6073 return TPACPI_THERMAL_TPEC_8;
6074 }
6075
6076 return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
6077 }
6078
6079 if (acpi_tmp7) {
6080 if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
6081 /* 600e/x, 770e, 770x */
6082 return TPACPI_THERMAL_ACPI_UPDT;
6083 }
6084 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
6085 return TPACPI_THERMAL_ACPI_TMP07;
6086 }
6087
6088 /* temperatures not supported on 570, G4x, R30, R31, R32 */
6089 return TPACPI_THERMAL_NONE;
6090 }
6091
6092 /* idx is zero-based */
thermal_get_sensor(int idx,s32 * value)6093 static int thermal_get_sensor(int idx, s32 *value)
6094 {
6095 int t;
6096 s8 tmp;
6097 char tmpi[5];
6098
6099 t = TP_EC_THERMAL_TMP0;
6100
6101 switch (thermal_read_mode) {
6102 #if TPACPI_MAX_THERMAL_SENSORS >= 16
6103 case TPACPI_THERMAL_TPEC_16:
6104 if (idx >= 8 && idx <= 15) {
6105 t = TP_EC_THERMAL_TMP8;
6106 idx -= 8;
6107 }
6108 #endif
6109 fallthrough;
6110 case TPACPI_THERMAL_TPEC_8:
6111 if (idx <= 7) {
6112 if (!acpi_ec_read(t + idx, &tmp))
6113 return -EIO;
6114 *value = tmp * 1000;
6115 return 0;
6116 }
6117 break;
6118
6119 /* The Non-standard EC uses 12 Thermal areas */
6120 case TPACPI_THERMAL_TPEC_12:
6121 if (idx >= 12)
6122 return -EINVAL;
6123
6124 t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
6125 TP_EC_THERMAL_TMP8_NS + (idx - 8);
6126
6127 if (!acpi_ec_read(t, &tmp))
6128 return -EIO;
6129
6130 *value = tmp * MILLIDEGREE_PER_DEGREE;
6131 return 0;
6132
6133 case TPACPI_THERMAL_ACPI_UPDT:
6134 if (idx <= 7) {
6135 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6136 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
6137 return -EIO;
6138 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6139 return -EIO;
6140 *value = (t - 2732) * 100;
6141 return 0;
6142 }
6143 break;
6144
6145 case TPACPI_THERMAL_ACPI_TMP07:
6146 if (idx <= 7) {
6147 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
6148 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
6149 return -EIO;
6150 if (t > 127 || t < -127)
6151 t = TP_EC_THERMAL_TMP_NA;
6152 *value = t * 1000;
6153 return 0;
6154 }
6155 break;
6156
6157 case TPACPI_THERMAL_NONE:
6158 default:
6159 return -ENOSYS;
6160 }
6161
6162 return -EINVAL;
6163 }
6164
thermal_get_sensors(struct ibm_thermal_sensors_struct * s)6165 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
6166 {
6167 int res, i, n;
6168
6169 if (!s)
6170 return -EINVAL;
6171
6172 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
6173 n = 16;
6174 else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12)
6175 n = 12;
6176 else
6177 n = 8;
6178
6179 for (i = 0 ; i < n; i++) {
6180 res = thermal_get_sensor(i, &s->temp[i]);
6181 if (res)
6182 return res;
6183 }
6184
6185 return n;
6186 }
6187
thermal_dump_all_sensors(void)6188 static void thermal_dump_all_sensors(void)
6189 {
6190 int n, i;
6191 struct ibm_thermal_sensors_struct t;
6192
6193 n = thermal_get_sensors(&t);
6194 if (n <= 0)
6195 return;
6196
6197 pr_notice("temperatures (Celsius):");
6198
6199 for (i = 0; i < n; i++) {
6200 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
6201 pr_cont(" %d", (int)(t.temp[i] / 1000));
6202 else
6203 pr_cont(" N/A");
6204 }
6205
6206 pr_cont("\n");
6207 }
6208
6209 /* sysfs temp##_input -------------------------------------------------- */
6210
thermal_temp_input_show(struct device * dev,struct device_attribute * attr,char * buf)6211 static ssize_t thermal_temp_input_show(struct device *dev,
6212 struct device_attribute *attr,
6213 char *buf)
6214 {
6215 struct sensor_device_attribute *sensor_attr =
6216 to_sensor_dev_attr(attr);
6217 int idx = sensor_attr->index;
6218 s32 value;
6219 int res;
6220
6221 res = thermal_get_sensor(idx, &value);
6222 if (res)
6223 return res;
6224 if (value == TPACPI_THERMAL_SENSOR_NA)
6225 return -ENXIO;
6226
6227 return sysfs_emit(buf, "%d\n", value);
6228 }
6229
6230 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
6231 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
6232 thermal_temp_input_show, NULL, _idxB)
6233
6234 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
6235 THERMAL_SENSOR_ATTR_TEMP(1, 0),
6236 THERMAL_SENSOR_ATTR_TEMP(2, 1),
6237 THERMAL_SENSOR_ATTR_TEMP(3, 2),
6238 THERMAL_SENSOR_ATTR_TEMP(4, 3),
6239 THERMAL_SENSOR_ATTR_TEMP(5, 4),
6240 THERMAL_SENSOR_ATTR_TEMP(6, 5),
6241 THERMAL_SENSOR_ATTR_TEMP(7, 6),
6242 THERMAL_SENSOR_ATTR_TEMP(8, 7),
6243 THERMAL_SENSOR_ATTR_TEMP(9, 8),
6244 THERMAL_SENSOR_ATTR_TEMP(10, 9),
6245 THERMAL_SENSOR_ATTR_TEMP(11, 10),
6246 THERMAL_SENSOR_ATTR_TEMP(12, 11),
6247 THERMAL_SENSOR_ATTR_TEMP(13, 12),
6248 THERMAL_SENSOR_ATTR_TEMP(14, 13),
6249 THERMAL_SENSOR_ATTR_TEMP(15, 14),
6250 THERMAL_SENSOR_ATTR_TEMP(16, 15),
6251 };
6252
6253 #define THERMAL_ATTRS(X) \
6254 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
6255
6256 static struct attribute *thermal_temp_input_attr[] = {
6257 THERMAL_ATTRS(0),
6258 THERMAL_ATTRS(1),
6259 THERMAL_ATTRS(2),
6260 THERMAL_ATTRS(3),
6261 THERMAL_ATTRS(4),
6262 THERMAL_ATTRS(5),
6263 THERMAL_ATTRS(6),
6264 THERMAL_ATTRS(7),
6265 THERMAL_ATTRS(8),
6266 THERMAL_ATTRS(9),
6267 THERMAL_ATTRS(10),
6268 THERMAL_ATTRS(11),
6269 THERMAL_ATTRS(12),
6270 THERMAL_ATTRS(13),
6271 THERMAL_ATTRS(14),
6272 THERMAL_ATTRS(15),
6273 NULL
6274 };
6275
6276 #define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
6277
thermal_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)6278 static umode_t thermal_attr_is_visible(struct kobject *kobj,
6279 struct attribute *attr, int n)
6280 {
6281 struct device_attribute *dev_attr = to_dev_attr(attr);
6282 struct sensor_device_attribute *sensor_attr =
6283 to_sensor_dev_attr(dev_attr);
6284
6285 int idx = sensor_attr->index;
6286
6287 switch (thermal_read_mode) {
6288 case TPACPI_THERMAL_NONE:
6289 return 0;
6290
6291 case TPACPI_THERMAL_ACPI_TMP07:
6292 case TPACPI_THERMAL_ACPI_UPDT:
6293 case TPACPI_THERMAL_TPEC_8:
6294 if (idx >= 8)
6295 return 0;
6296 break;
6297
6298 case TPACPI_THERMAL_TPEC_12:
6299 if (idx >= 12)
6300 return 0;
6301 break;
6302
6303 default:
6304 break;
6305
6306 }
6307
6308 return attr->mode;
6309 }
6310
6311 static const struct attribute_group thermal_attr_group = {
6312 .is_visible = thermal_attr_is_visible,
6313 .attrs = thermal_temp_input_attr,
6314 };
6315
6316 #undef THERMAL_SENSOR_ATTR_TEMP
6317 #undef THERMAL_ATTRS
6318
temp1_label_show(struct device * dev,struct device_attribute * attr,char * buf)6319 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6320 {
6321 return sysfs_emit(buf, "CPU\n");
6322 }
6323 static DEVICE_ATTR_RO(temp1_label);
6324
temp2_label_show(struct device * dev,struct device_attribute * attr,char * buf)6325 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf)
6326 {
6327 return sysfs_emit(buf, "GPU\n");
6328 }
6329 static DEVICE_ATTR_RO(temp2_label);
6330
6331 static struct attribute *temp_label_attributes[] = {
6332 &dev_attr_temp1_label.attr,
6333 &dev_attr_temp2_label.attr,
6334 NULL
6335 };
6336
temp_label_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)6337 static umode_t temp_label_attr_is_visible(struct kobject *kobj,
6338 struct attribute *attr, int n)
6339 {
6340 return thermal_use_labels ? attr->mode : 0;
6341 }
6342
6343 static const struct attribute_group temp_label_attr_group = {
6344 .is_visible = temp_label_attr_is_visible,
6345 .attrs = temp_label_attributes,
6346 };
6347
6348 /* --------------------------------------------------------------------- */
6349
thermal_init(struct ibm_init_struct * iibm)6350 static int __init thermal_init(struct ibm_init_struct *iibm)
6351 {
6352 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
6353
6354 thermal_read_mode = thermal_read_mode_check();
6355
6356 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
6357 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
6358 thermal_read_mode);
6359
6360 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV;
6361 }
6362
thermal_read(struct seq_file * m)6363 static int thermal_read(struct seq_file *m)
6364 {
6365 int n, i;
6366 struct ibm_thermal_sensors_struct t;
6367
6368 n = thermal_get_sensors(&t);
6369 if (unlikely(n < 0))
6370 return n;
6371
6372 seq_printf(m, "temperatures:\t");
6373
6374 if (n > 0) {
6375 for (i = 0; i < (n - 1); i++)
6376 seq_printf(m, "%d ", t.temp[i] / 1000);
6377 seq_printf(m, "%d\n", t.temp[i] / 1000);
6378 } else
6379 seq_printf(m, "not supported\n");
6380
6381 return 0;
6382 }
6383
6384 static struct ibm_struct thermal_driver_data = {
6385 .name = "thermal",
6386 .read = thermal_read,
6387 };
6388
6389 /*************************************************************************
6390 * Backlight/brightness subdriver
6391 */
6392
6393 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6394
6395 /*
6396 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6397 * CMOS NVRAM byte 0x5E, bits 0-3.
6398 *
6399 * EC HBRV (0x31) has the following layout
6400 * Bit 7: unknown function
6401 * Bit 6: unknown function
6402 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6403 * Bit 4: must be set to zero to avoid problems
6404 * Bit 3-0: backlight brightness level
6405 *
6406 * brightness_get_raw returns status data in the HBRV layout
6407 *
6408 * WARNING: The X61 has been verified to use HBRV for something else, so
6409 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6410 * testing on the very early *60 Lenovo models...
6411 */
6412
6413 enum {
6414 TP_EC_BACKLIGHT = 0x31,
6415
6416 /* TP_EC_BACKLIGHT bitmasks */
6417 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6418 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6419 TP_EC_BACKLIGHT_MAPSW = 0x20,
6420 };
6421
6422 enum tpacpi_brightness_access_mode {
6423 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6424 TPACPI_BRGHT_MODE_EC, /* EC control */
6425 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6426 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6427 TPACPI_BRGHT_MODE_MAX
6428 };
6429
6430 static struct backlight_device *ibm_backlight_device;
6431
6432 static enum tpacpi_brightness_access_mode brightness_mode =
6433 TPACPI_BRGHT_MODE_MAX;
6434
6435 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6436
6437 static struct mutex brightness_mutex;
6438
6439 /* NVRAM brightness access */
tpacpi_brightness_nvram_get(void)6440 static unsigned int tpacpi_brightness_nvram_get(void)
6441 {
6442 u8 lnvram;
6443
6444 lockdep_assert_held(&brightness_mutex);
6445
6446 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6447 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6448 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
6449 lnvram &= bright_maxlvl;
6450
6451 return lnvram;
6452 }
6453
tpacpi_brightness_checkpoint_nvram(void)6454 static void tpacpi_brightness_checkpoint_nvram(void)
6455 {
6456 u8 lec = 0;
6457 u8 b_nvram;
6458
6459 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6460 return;
6461
6462 vdbg_printk(TPACPI_DBG_BRGHT,
6463 "trying to checkpoint backlight level to NVRAM...\n");
6464
6465 if (mutex_lock_killable(&brightness_mutex) < 0)
6466 return;
6467
6468 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6469 goto unlock;
6470 lec &= TP_EC_BACKLIGHT_LVLMSK;
6471 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6472
6473 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6474 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6475 /* NVRAM needs update */
6476 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6477 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6478 b_nvram |= lec;
6479 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6480 dbg_printk(TPACPI_DBG_BRGHT,
6481 "updated NVRAM backlight level to %u (0x%02x)\n",
6482 (unsigned int) lec, (unsigned int) b_nvram);
6483 } else
6484 vdbg_printk(TPACPI_DBG_BRGHT,
6485 "NVRAM backlight level already is %u (0x%02x)\n",
6486 (unsigned int) lec, (unsigned int) b_nvram);
6487
6488 unlock:
6489 mutex_unlock(&brightness_mutex);
6490 }
6491
6492
tpacpi_brightness_get_raw(int * status)6493 static int tpacpi_brightness_get_raw(int *status)
6494 {
6495 u8 lec = 0;
6496
6497 lockdep_assert_held(&brightness_mutex);
6498
6499 switch (brightness_mode) {
6500 case TPACPI_BRGHT_MODE_UCMS_STEP:
6501 *status = tpacpi_brightness_nvram_get();
6502 return 0;
6503 case TPACPI_BRGHT_MODE_EC:
6504 case TPACPI_BRGHT_MODE_ECNVRAM:
6505 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6506 return -EIO;
6507 *status = lec;
6508 return 0;
6509 default:
6510 return -ENXIO;
6511 }
6512 }
6513
6514 /* do NOT call with illegal backlight level value */
tpacpi_brightness_set_ec(unsigned int value)6515 static int tpacpi_brightness_set_ec(unsigned int value)
6516 {
6517 u8 lec = 0;
6518
6519 lockdep_assert_held(&brightness_mutex);
6520
6521 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6522 return -EIO;
6523
6524 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6525 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6526 (value & TP_EC_BACKLIGHT_LVLMSK))))
6527 return -EIO;
6528
6529 return 0;
6530 }
6531
tpacpi_brightness_set_ucmsstep(unsigned int value)6532 static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6533 {
6534 int cmos_cmd, inc;
6535 unsigned int current_value, i;
6536
6537 lockdep_assert_held(&brightness_mutex);
6538
6539 current_value = tpacpi_brightness_nvram_get();
6540
6541 if (value == current_value)
6542 return 0;
6543
6544 cmos_cmd = (value > current_value) ?
6545 TP_CMOS_BRIGHTNESS_UP :
6546 TP_CMOS_BRIGHTNESS_DOWN;
6547 inc = (value > current_value) ? 1 : -1;
6548
6549 for (i = current_value; i != value; i += inc)
6550 if (issue_thinkpad_cmos_command(cmos_cmd))
6551 return -EIO;
6552
6553 return 0;
6554 }
6555
6556 /* May return EINTR which can always be mapped to ERESTARTSYS */
brightness_set(unsigned int value)6557 static int brightness_set(unsigned int value)
6558 {
6559 int res;
6560
6561 if (value > bright_maxlvl)
6562 return -EINVAL;
6563
6564 vdbg_printk(TPACPI_DBG_BRGHT,
6565 "set backlight level to %d\n", value);
6566
6567 res = mutex_lock_killable(&brightness_mutex);
6568 if (res < 0)
6569 return res;
6570
6571 switch (brightness_mode) {
6572 case TPACPI_BRGHT_MODE_EC:
6573 case TPACPI_BRGHT_MODE_ECNVRAM:
6574 res = tpacpi_brightness_set_ec(value);
6575 break;
6576 case TPACPI_BRGHT_MODE_UCMS_STEP:
6577 res = tpacpi_brightness_set_ucmsstep(value);
6578 break;
6579 default:
6580 res = -ENXIO;
6581 }
6582
6583 mutex_unlock(&brightness_mutex);
6584 return res;
6585 }
6586
6587 /* sysfs backlight class ----------------------------------------------- */
6588
brightness_update_status(struct backlight_device * bd)6589 static int brightness_update_status(struct backlight_device *bd)
6590 {
6591 int level = backlight_get_brightness(bd);
6592
6593 dbg_printk(TPACPI_DBG_BRGHT,
6594 "backlight: attempt to set level to %d\n",
6595 level);
6596
6597 /* it is the backlight class's job (caller) to handle
6598 * EINTR and other errors properly */
6599 return brightness_set(level);
6600 }
6601
brightness_get(struct backlight_device * bd)6602 static int brightness_get(struct backlight_device *bd)
6603 {
6604 int status, res;
6605
6606 res = mutex_lock_killable(&brightness_mutex);
6607 if (res < 0)
6608 return 0;
6609
6610 res = tpacpi_brightness_get_raw(&status);
6611
6612 mutex_unlock(&brightness_mutex);
6613
6614 if (res < 0)
6615 return 0;
6616
6617 return status & TP_EC_BACKLIGHT_LVLMSK;
6618 }
6619
tpacpi_brightness_notify_change(void)6620 static void tpacpi_brightness_notify_change(void)
6621 {
6622 backlight_force_update(ibm_backlight_device,
6623 BACKLIGHT_UPDATE_HOTKEY);
6624 }
6625
6626 static const struct backlight_ops ibm_backlight_data = {
6627 .get_brightness = brightness_get,
6628 .update_status = brightness_update_status,
6629 };
6630
6631 /* --------------------------------------------------------------------- */
6632
tpacpi_evaluate_bcl(struct acpi_device * adev,void * not_used)6633 static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used)
6634 {
6635 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6636 union acpi_object *obj;
6637 acpi_status status;
6638 int rc;
6639
6640 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer);
6641 if (ACPI_FAILURE(status))
6642 return 0;
6643
6644 obj = buffer.pointer;
6645 if (!obj || obj->type != ACPI_TYPE_PACKAGE) {
6646 acpi_handle_info(adev->handle,
6647 "Unknown _BCL data, please report this to %s\n",
6648 TPACPI_MAIL);
6649 rc = 0;
6650 } else {
6651 rc = obj->package.count;
6652 }
6653 kfree(obj);
6654
6655 return rc;
6656 }
6657
6658 /*
6659 * Call _BCL method of video device. On some ThinkPads this will
6660 * switch the firmware to the ACPI brightness control mode.
6661 */
6662
tpacpi_query_bcl_levels(acpi_handle handle)6663 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6664 {
6665 struct acpi_device *device;
6666
6667 device = acpi_fetch_acpi_dev(handle);
6668 if (!device)
6669 return 0;
6670
6671 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL);
6672 }
6673
6674
6675 /*
6676 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6677 */
tpacpi_check_std_acpi_brightness_support(void)6678 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6679 {
6680 acpi_handle video_device;
6681 int bcl_levels = 0;
6682
6683 tpacpi_acpi_handle_locate("video", NULL, &video_device);
6684 if (video_device)
6685 bcl_levels = tpacpi_query_bcl_levels(video_device);
6686
6687 tp_features.bright_acpimode = (bcl_levels > 0);
6688
6689 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
6690 }
6691
6692 /*
6693 * These are only useful for models that have only one possibility
6694 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6695 * these quirks.
6696 */
6697 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6698 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6699 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6700
6701 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6702 /* Models with ATI GPUs known to require ECNVRAM mode */
6703 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6704
6705 /* Models with ATI GPUs that can use ECNVRAM */
6706 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
6707 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6708 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
6709 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6710
6711 /* Models with Intel Extreme Graphics 2 */
6712 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
6713 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6714 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6715
6716 /* Models with Intel GMA900 */
6717 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6718 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6719 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6720 };
6721
6722 /*
6723 * Returns < 0 for error, otherwise sets tp_features.bright_*
6724 * and bright_maxlvl.
6725 */
tpacpi_detect_brightness_capabilities(void)6726 static void __init tpacpi_detect_brightness_capabilities(void)
6727 {
6728 unsigned int b;
6729
6730 vdbg_printk(TPACPI_DBG_INIT,
6731 "detecting firmware brightness interface capabilities\n");
6732
6733 /* we could run a quirks check here (same table used by
6734 * brightness_init) if needed */
6735
6736 /*
6737 * We always attempt to detect acpi support, so as to switch
6738 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6739 * going to publish a backlight interface
6740 */
6741 b = tpacpi_check_std_acpi_brightness_support();
6742 switch (b) {
6743 case 16:
6744 bright_maxlvl = 15;
6745 break;
6746 case 8:
6747 case 0:
6748 bright_maxlvl = 7;
6749 break;
6750 default:
6751 tp_features.bright_unkfw = 1;
6752 bright_maxlvl = b - 1;
6753 }
6754 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
6755 }
6756
brightness_init(struct ibm_init_struct * iibm)6757 static int __init brightness_init(struct ibm_init_struct *iibm)
6758 {
6759 struct backlight_properties props;
6760 int b;
6761 unsigned long quirks;
6762
6763 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6764
6765 mutex_init(&brightness_mutex);
6766
6767 quirks = tpacpi_check_quirks(brightness_quirk_table,
6768 ARRAY_SIZE(brightness_quirk_table));
6769
6770 /* tpacpi_detect_brightness_capabilities() must have run already */
6771
6772 /* if it is unknown, we don't handle it: it wouldn't be safe */
6773 if (tp_features.bright_unkfw)
6774 return -ENODEV;
6775
6776 if (!brightness_enable) {
6777 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6778 "brightness support disabled by module parameter\n");
6779 return -ENODEV;
6780 }
6781
6782 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
6783 if (brightness_enable > 1) {
6784 pr_info("Standard ACPI backlight interface available, not loading native one\n");
6785 return -ENODEV;
6786 } else if (brightness_enable == 1) {
6787 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
6788 return -ENODEV;
6789 }
6790 } else if (!tp_features.bright_acpimode) {
6791 pr_notice("ACPI backlight interface not available\n");
6792 return -ENODEV;
6793 }
6794
6795 pr_notice("ACPI native brightness control enabled\n");
6796
6797 /*
6798 * Check for module parameter bogosity, note that we
6799 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6800 * able to detect "unspecified"
6801 */
6802 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6803 return -EINVAL;
6804
6805 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6806 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6807 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
6808 if (quirks & TPACPI_BRGHT_Q_EC)
6809 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6810 else
6811 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
6812
6813 dbg_printk(TPACPI_DBG_BRGHT,
6814 "driver auto-selected brightness_mode=%d\n",
6815 brightness_mode);
6816 }
6817
6818 /* Safety */
6819 if (!tpacpi_is_ibm() &&
6820 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6821 brightness_mode == TPACPI_BRGHT_MODE_EC))
6822 return -EINVAL;
6823
6824 if (tpacpi_brightness_get_raw(&b) < 0)
6825 return -ENODEV;
6826
6827 memset(&props, 0, sizeof(struct backlight_properties));
6828 props.type = BACKLIGHT_PLATFORM;
6829 props.max_brightness = bright_maxlvl;
6830 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
6831 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6832 NULL, NULL,
6833 &ibm_backlight_data,
6834 &props);
6835 if (IS_ERR(ibm_backlight_device)) {
6836 int rc = PTR_ERR(ibm_backlight_device);
6837 ibm_backlight_device = NULL;
6838 pr_err("Could not register backlight device\n");
6839 return rc;
6840 }
6841 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6842 "brightness is supported\n");
6843
6844 if (quirks & TPACPI_BRGHT_Q_ASK) {
6845 pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
6846 brightness_mode);
6847 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
6848 TPACPI_MAIL);
6849 }
6850
6851 /* Added by mistake in early 2007. Probably useless, but it could
6852 * be working around some unknown firmware problem where the value
6853 * read at startup doesn't match the real hardware state... so leave
6854 * it in place just in case */
6855 backlight_update_status(ibm_backlight_device);
6856
6857 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6858 "brightness: registering brightness hotkeys as change notification\n");
6859 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6860 | TP_ACPI_HKEY_BRGHTUP_MASK
6861 | TP_ACPI_HKEY_BRGHTDWN_MASK);
6862 return 0;
6863 }
6864
brightness_suspend(void)6865 static void brightness_suspend(void)
6866 {
6867 tpacpi_brightness_checkpoint_nvram();
6868 }
6869
brightness_shutdown(void)6870 static void brightness_shutdown(void)
6871 {
6872 tpacpi_brightness_checkpoint_nvram();
6873 }
6874
brightness_exit(void)6875 static void brightness_exit(void)
6876 {
6877 if (ibm_backlight_device) {
6878 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
6879 "calling backlight_device_unregister()\n");
6880 backlight_device_unregister(ibm_backlight_device);
6881 }
6882
6883 tpacpi_brightness_checkpoint_nvram();
6884 }
6885
brightness_read(struct seq_file * m)6886 static int brightness_read(struct seq_file *m)
6887 {
6888 int level;
6889
6890 level = brightness_get(NULL);
6891 if (level < 0) {
6892 seq_printf(m, "level:\t\tunreadable\n");
6893 } else {
6894 seq_printf(m, "level:\t\t%d\n", level);
6895 seq_printf(m, "commands:\tup, down\n");
6896 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6897 bright_maxlvl);
6898 }
6899
6900 return 0;
6901 }
6902
brightness_write(char * buf)6903 static int brightness_write(char *buf)
6904 {
6905 int level;
6906 int rc;
6907 char *cmd;
6908
6909 level = brightness_get(NULL);
6910 if (level < 0)
6911 return level;
6912
6913 while ((cmd = strsep(&buf, ","))) {
6914 if (strstarts(cmd, "up")) {
6915 if (level < bright_maxlvl)
6916 level++;
6917 } else if (strstarts(cmd, "down")) {
6918 if (level > 0)
6919 level--;
6920 } else if (sscanf(cmd, "level %d", &level) == 1 &&
6921 level >= 0 && level <= bright_maxlvl) {
6922 /* new level set */
6923 } else
6924 return -EINVAL;
6925 }
6926
6927 tpacpi_disclose_usertask("procfs brightness",
6928 "set level to %d\n", level);
6929
6930 /*
6931 * Now we know what the final level should be, so we try to set it.
6932 * Doing it this way makes the syscall restartable in case of EINTR
6933 */
6934 rc = brightness_set(level);
6935 if (!rc && ibm_backlight_device)
6936 backlight_force_update(ibm_backlight_device,
6937 BACKLIGHT_UPDATE_SYSFS);
6938 return (rc == -EINTR) ? -ERESTARTSYS : rc;
6939 }
6940
6941 static struct ibm_struct brightness_driver_data = {
6942 .name = "brightness",
6943 .read = brightness_read,
6944 .write = brightness_write,
6945 .exit = brightness_exit,
6946 .suspend = brightness_suspend,
6947 .shutdown = brightness_shutdown,
6948 };
6949
6950 /*************************************************************************
6951 * Volume subdriver
6952 */
6953
6954 /*
6955 * IBM ThinkPads have a simple volume controller with MUTE gating.
6956 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6957 *
6958 * Since the *61 series (and probably also the later *60 series), Lenovo
6959 * ThinkPads only implement the MUTE gate.
6960 *
6961 * EC register 0x30
6962 * Bit 6: MUTE (1 mutes sound)
6963 * Bit 3-0: Volume
6964 * Other bits should be zero as far as we know.
6965 *
6966 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6967 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6968 * such as bit 7 which is used to detect repeated presses of MUTE,
6969 * and we leave them unchanged.
6970 *
6971 * On newer Lenovo ThinkPads, the EC can automatically change the volume
6972 * in response to user input. Unfortunately, this rarely works well.
6973 * The laptop changes the state of its internal MUTE gate and, on some
6974 * models, sends KEY_MUTE, causing any user code that responds to the
6975 * mute button to get confused. The hardware MUTE gate is also
6976 * unnecessary, since user code can handle the mute button without
6977 * kernel or EC help.
6978 *
6979 * To avoid confusing userspace, we simply disable all EC-based mute
6980 * and volume controls when possible.
6981 */
6982
6983 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6984
6985 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6986 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6987 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6988
6989 #if SNDRV_CARDS <= 32
6990 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6991 #else
6992 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6993 #endif
6994 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
6995 static char *alsa_id = "ThinkPadEC";
6996 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
6997
6998 struct tpacpi_alsa_data {
6999 struct snd_card *card;
7000 struct snd_ctl_elem_id *ctl_mute_id;
7001 struct snd_ctl_elem_id *ctl_vol_id;
7002 };
7003
7004 static struct snd_card *alsa_card;
7005
7006 enum {
7007 TP_EC_AUDIO = 0x30,
7008
7009 /* TP_EC_AUDIO bits */
7010 TP_EC_AUDIO_MUTESW = 6,
7011
7012 /* TP_EC_AUDIO bitmasks */
7013 TP_EC_AUDIO_LVL_MSK = 0x0F,
7014 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
7015
7016 /* Maximum volume */
7017 TP_EC_VOLUME_MAX = 14,
7018 };
7019
7020 enum tpacpi_volume_access_mode {
7021 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
7022 TPACPI_VOL_MODE_EC, /* Pure EC control */
7023 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
7024 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
7025 TPACPI_VOL_MODE_MAX
7026 };
7027
7028 enum tpacpi_volume_capabilities {
7029 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
7030 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
7031 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
7032 TPACPI_VOL_CAP_MAX
7033 };
7034
7035 enum tpacpi_mute_btn_mode {
7036 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
7037 /* We don't know what mode 1 is. */
7038 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
7039 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
7040 };
7041
7042 static enum tpacpi_volume_access_mode volume_mode =
7043 TPACPI_VOL_MODE_MAX;
7044
7045 static enum tpacpi_volume_capabilities volume_capabilities;
7046 static bool volume_control_allowed;
7047 static bool software_mute_requested = true;
7048 static bool software_mute_active;
7049 static int software_mute_orig_mode;
7050
7051 /*
7052 * Used to syncronize writers to TP_EC_AUDIO and
7053 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
7054 */
7055 static struct mutex volume_mutex;
7056
tpacpi_volume_checkpoint_nvram(void)7057 static void tpacpi_volume_checkpoint_nvram(void)
7058 {
7059 u8 lec = 0;
7060 u8 b_nvram;
7061 u8 ec_mask;
7062
7063 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
7064 return;
7065 if (!volume_control_allowed)
7066 return;
7067 if (software_mute_active)
7068 return;
7069
7070 vdbg_printk(TPACPI_DBG_MIXER,
7071 "trying to checkpoint mixer state to NVRAM...\n");
7072
7073 if (tp_features.mixer_no_level_control)
7074 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
7075 else
7076 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
7077
7078 if (mutex_lock_killable(&volume_mutex) < 0)
7079 return;
7080
7081 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
7082 goto unlock;
7083 lec &= ec_mask;
7084 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
7085
7086 if (lec != (b_nvram & ec_mask)) {
7087 /* NVRAM needs update */
7088 b_nvram &= ~ec_mask;
7089 b_nvram |= lec;
7090 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
7091 dbg_printk(TPACPI_DBG_MIXER,
7092 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
7093 (unsigned int) lec, (unsigned int) b_nvram);
7094 } else {
7095 vdbg_printk(TPACPI_DBG_MIXER,
7096 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
7097 (unsigned int) lec, (unsigned int) b_nvram);
7098 }
7099
7100 unlock:
7101 mutex_unlock(&volume_mutex);
7102 }
7103
volume_get_status_ec(u8 * status)7104 static int volume_get_status_ec(u8 *status)
7105 {
7106 u8 s;
7107
7108 if (!acpi_ec_read(TP_EC_AUDIO, &s))
7109 return -EIO;
7110
7111 *status = s;
7112
7113 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
7114
7115 return 0;
7116 }
7117
volume_get_status(u8 * status)7118 static int volume_get_status(u8 *status)
7119 {
7120 return volume_get_status_ec(status);
7121 }
7122
volume_set_status_ec(const u8 status)7123 static int volume_set_status_ec(const u8 status)
7124 {
7125 if (!acpi_ec_write(TP_EC_AUDIO, status))
7126 return -EIO;
7127
7128 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
7129
7130 /*
7131 * On X200s, and possibly on others, it can take a while for
7132 * reads to become correct.
7133 */
7134 msleep(1);
7135
7136 return 0;
7137 }
7138
volume_set_status(const u8 status)7139 static int volume_set_status(const u8 status)
7140 {
7141 return volume_set_status_ec(status);
7142 }
7143
7144 /* returns < 0 on error, 0 on no change, 1 on change */
__volume_set_mute_ec(const bool mute)7145 static int __volume_set_mute_ec(const bool mute)
7146 {
7147 int rc;
7148 u8 s, n;
7149
7150 if (mutex_lock_killable(&volume_mutex) < 0)
7151 return -EINTR;
7152
7153 rc = volume_get_status_ec(&s);
7154 if (rc)
7155 goto unlock;
7156
7157 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
7158 s & ~TP_EC_AUDIO_MUTESW_MSK;
7159
7160 if (n != s) {
7161 rc = volume_set_status_ec(n);
7162 if (!rc)
7163 rc = 1;
7164 }
7165
7166 unlock:
7167 mutex_unlock(&volume_mutex);
7168 return rc;
7169 }
7170
volume_alsa_set_mute(const bool mute)7171 static int volume_alsa_set_mute(const bool mute)
7172 {
7173 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
7174 (mute) ? "" : "un");
7175 return __volume_set_mute_ec(mute);
7176 }
7177
volume_set_mute(const bool mute)7178 static int volume_set_mute(const bool mute)
7179 {
7180 int rc;
7181
7182 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
7183 (mute) ? "" : "un");
7184
7185 rc = __volume_set_mute_ec(mute);
7186 return (rc < 0) ? rc : 0;
7187 }
7188
7189 /* returns < 0 on error, 0 on no change, 1 on change */
__volume_set_volume_ec(const u8 vol)7190 static int __volume_set_volume_ec(const u8 vol)
7191 {
7192 int rc;
7193 u8 s, n;
7194
7195 if (vol > TP_EC_VOLUME_MAX)
7196 return -EINVAL;
7197
7198 if (mutex_lock_killable(&volume_mutex) < 0)
7199 return -EINTR;
7200
7201 rc = volume_get_status_ec(&s);
7202 if (rc)
7203 goto unlock;
7204
7205 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
7206
7207 if (n != s) {
7208 rc = volume_set_status_ec(n);
7209 if (!rc)
7210 rc = 1;
7211 }
7212
7213 unlock:
7214 mutex_unlock(&volume_mutex);
7215 return rc;
7216 }
7217
volume_set_software_mute(bool startup)7218 static int volume_set_software_mute(bool startup)
7219 {
7220 int result;
7221
7222 if (!tpacpi_is_lenovo())
7223 return -ENODEV;
7224
7225 if (startup) {
7226 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
7227 "HAUM", "qd"))
7228 return -EIO;
7229
7230 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7231 "Initial HAUM setting was %d\n",
7232 software_mute_orig_mode);
7233 }
7234
7235 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
7236 (int)TP_EC_MUTE_BTN_NONE))
7237 return -EIO;
7238
7239 if (result != TP_EC_MUTE_BTN_NONE)
7240 pr_warn("Unexpected SAUM result %d\n",
7241 result);
7242
7243 /*
7244 * In software mute mode, the standard codec controls take
7245 * precendence, so we unmute the ThinkPad HW switch at
7246 * startup. Just on case there are SAUM-capable ThinkPads
7247 * with level controls, set max HW volume as well.
7248 */
7249 if (tp_features.mixer_no_level_control)
7250 result = volume_set_mute(false);
7251 else
7252 result = volume_set_status(TP_EC_VOLUME_MAX);
7253
7254 if (result != 0)
7255 pr_warn("Failed to unmute the HW mute switch\n");
7256
7257 return 0;
7258 }
7259
volume_exit_software_mute(void)7260 static void volume_exit_software_mute(void)
7261 {
7262 int r;
7263
7264 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
7265 || r != software_mute_orig_mode)
7266 pr_warn("Failed to restore mute mode\n");
7267 }
7268
volume_alsa_set_volume(const u8 vol)7269 static int volume_alsa_set_volume(const u8 vol)
7270 {
7271 dbg_printk(TPACPI_DBG_MIXER,
7272 "ALSA: trying to set volume level to %hu\n", vol);
7273 return __volume_set_volume_ec(vol);
7274 }
7275
volume_alsa_notify_change(void)7276 static void volume_alsa_notify_change(void)
7277 {
7278 struct tpacpi_alsa_data *d;
7279
7280 if (alsa_card && alsa_card->private_data) {
7281 d = alsa_card->private_data;
7282 if (d->ctl_mute_id)
7283 snd_ctl_notify(alsa_card,
7284 SNDRV_CTL_EVENT_MASK_VALUE,
7285 d->ctl_mute_id);
7286 if (d->ctl_vol_id)
7287 snd_ctl_notify(alsa_card,
7288 SNDRV_CTL_EVENT_MASK_VALUE,
7289 d->ctl_vol_id);
7290 }
7291 }
7292
volume_alsa_vol_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)7293 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
7294 struct snd_ctl_elem_info *uinfo)
7295 {
7296 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
7297 uinfo->count = 1;
7298 uinfo->value.integer.min = 0;
7299 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
7300 return 0;
7301 }
7302
volume_alsa_vol_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7303 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
7304 struct snd_ctl_elem_value *ucontrol)
7305 {
7306 u8 s;
7307 int rc;
7308
7309 rc = volume_get_status(&s);
7310 if (rc < 0)
7311 return rc;
7312
7313 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
7314 return 0;
7315 }
7316
volume_alsa_vol_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7317 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
7318 struct snd_ctl_elem_value *ucontrol)
7319 {
7320 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
7321 ucontrol->value.integer.value[0]);
7322 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
7323 }
7324
7325 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
7326
volume_alsa_mute_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7327 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
7328 struct snd_ctl_elem_value *ucontrol)
7329 {
7330 u8 s;
7331 int rc;
7332
7333 rc = volume_get_status(&s);
7334 if (rc < 0)
7335 return rc;
7336
7337 ucontrol->value.integer.value[0] =
7338 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
7339 return 0;
7340 }
7341
volume_alsa_mute_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7342 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7343 struct snd_ctl_elem_value *ucontrol)
7344 {
7345 tpacpi_disclose_usertask("ALSA", "%smute\n",
7346 ucontrol->value.integer.value[0] ?
7347 "un" : "");
7348 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
7349 }
7350
7351 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
7352 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7353 .name = "Console Playback Volume",
7354 .index = 0,
7355 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7356 .info = volume_alsa_vol_info,
7357 .get = volume_alsa_vol_get,
7358 };
7359
7360 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
7361 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7362 .name = "Console Playback Switch",
7363 .index = 0,
7364 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7365 .info = volume_alsa_mute_info,
7366 .get = volume_alsa_mute_get,
7367 };
7368
volume_suspend(void)7369 static void volume_suspend(void)
7370 {
7371 tpacpi_volume_checkpoint_nvram();
7372 }
7373
volume_resume(void)7374 static void volume_resume(void)
7375 {
7376 if (software_mute_active) {
7377 if (volume_set_software_mute(false) < 0)
7378 pr_warn("Failed to restore software mute\n");
7379 } else {
7380 volume_alsa_notify_change();
7381 }
7382 }
7383
volume_shutdown(void)7384 static void volume_shutdown(void)
7385 {
7386 tpacpi_volume_checkpoint_nvram();
7387 }
7388
volume_exit(void)7389 static void volume_exit(void)
7390 {
7391 if (alsa_card) {
7392 snd_card_free(alsa_card);
7393 alsa_card = NULL;
7394 }
7395
7396 tpacpi_volume_checkpoint_nvram();
7397
7398 if (software_mute_active)
7399 volume_exit_software_mute();
7400 }
7401
volume_create_alsa_mixer(void)7402 static int __init volume_create_alsa_mixer(void)
7403 {
7404 struct snd_card *card;
7405 struct tpacpi_alsa_data *data;
7406 struct snd_kcontrol *ctl_vol;
7407 struct snd_kcontrol *ctl_mute;
7408 int rc;
7409
7410 rc = snd_card_new(&tpacpi_pdev->dev,
7411 alsa_index, alsa_id, THIS_MODULE,
7412 sizeof(struct tpacpi_alsa_data), &card);
7413 if (rc < 0 || !card) {
7414 pr_err("Failed to create ALSA card structures: %d\n", rc);
7415 return -ENODEV;
7416 }
7417
7418 BUG_ON(!card->private_data);
7419 data = card->private_data;
7420 data->card = card;
7421
7422 strscpy(card->driver, TPACPI_ALSA_DRVNAME);
7423 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME);
7424 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7425 (thinkpad_id.ec_version_str) ?
7426 thinkpad_id.ec_version_str : "(unknown)");
7427 snprintf(card->longname, sizeof(card->longname),
7428 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7429 (thinkpad_id.ec_version_str) ?
7430 thinkpad_id.ec_version_str : "unknown");
7431
7432 if (volume_control_allowed) {
7433 volume_alsa_control_vol.put = volume_alsa_vol_put;
7434 volume_alsa_control_vol.access =
7435 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7436
7437 volume_alsa_control_mute.put = volume_alsa_mute_put;
7438 volume_alsa_control_mute.access =
7439 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7440 }
7441
7442 if (!tp_features.mixer_no_level_control) {
7443 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7444 rc = snd_ctl_add(card, ctl_vol);
7445 if (rc < 0) {
7446 pr_err("Failed to create ALSA volume control: %d\n",
7447 rc);
7448 goto err_exit;
7449 }
7450 data->ctl_vol_id = &ctl_vol->id;
7451 }
7452
7453 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7454 rc = snd_ctl_add(card, ctl_mute);
7455 if (rc < 0) {
7456 pr_err("Failed to create ALSA mute control: %d\n", rc);
7457 goto err_exit;
7458 }
7459 data->ctl_mute_id = &ctl_mute->id;
7460
7461 rc = snd_card_register(card);
7462 if (rc < 0) {
7463 pr_err("Failed to register ALSA card: %d\n", rc);
7464 goto err_exit;
7465 }
7466
7467 alsa_card = card;
7468 return 0;
7469
7470 err_exit:
7471 snd_card_free(card);
7472 return -ENODEV;
7473 }
7474
7475 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7476 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7477
7478 static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7479 /* Whitelist volume level on all IBM by default */
7480 { .vendor = PCI_VENDOR_ID_IBM,
7481 .bios = TPACPI_MATCH_ANY,
7482 .ec = TPACPI_MATCH_ANY,
7483 .quirks = TPACPI_VOL_Q_LEVEL },
7484
7485 /* Lenovo models with volume control (needs confirmation) */
7486 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7487 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7488 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7489 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7490 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7491 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7492 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7493
7494 /* Whitelist mute-only on all Lenovo by default */
7495 { .vendor = PCI_VENDOR_ID_LENOVO,
7496 .bios = TPACPI_MATCH_ANY,
7497 .ec = TPACPI_MATCH_ANY,
7498 .quirks = TPACPI_VOL_Q_MUTEONLY }
7499 };
7500
volume_init(struct ibm_init_struct * iibm)7501 static int __init volume_init(struct ibm_init_struct *iibm)
7502 {
7503 unsigned long quirks;
7504 int rc;
7505
7506 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7507
7508 mutex_init(&volume_mutex);
7509
7510 /*
7511 * Check for module parameter bogosity, note that we
7512 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7513 * able to detect "unspecified"
7514 */
7515 if (volume_mode > TPACPI_VOL_MODE_MAX)
7516 return -EINVAL;
7517
7518 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
7519 pr_err("UCMS step volume mode not implemented, please contact %s\n",
7520 TPACPI_MAIL);
7521 return -ENODEV;
7522 }
7523
7524 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7525 return -EINVAL;
7526
7527 /*
7528 * The ALSA mixer is our primary interface.
7529 * When disabled, don't install the subdriver at all
7530 */
7531 if (!alsa_enable) {
7532 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7533 "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
7534 return -ENODEV;
7535 }
7536
7537 quirks = tpacpi_check_quirks(volume_quirk_table,
7538 ARRAY_SIZE(volume_quirk_table));
7539
7540 switch (volume_capabilities) {
7541 case TPACPI_VOL_CAP_AUTO:
7542 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7543 tp_features.mixer_no_level_control = 1;
7544 else if (quirks & TPACPI_VOL_Q_LEVEL)
7545 tp_features.mixer_no_level_control = 0;
7546 else
7547 return -ENODEV; /* no mixer */
7548 break;
7549 case TPACPI_VOL_CAP_VOLMUTE:
7550 tp_features.mixer_no_level_control = 0;
7551 break;
7552 case TPACPI_VOL_CAP_MUTEONLY:
7553 tp_features.mixer_no_level_control = 1;
7554 break;
7555 default:
7556 return -ENODEV;
7557 }
7558
7559 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7560 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7561 "using user-supplied volume_capabilities=%d\n",
7562 volume_capabilities);
7563
7564 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7565 volume_mode == TPACPI_VOL_MODE_MAX) {
7566 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7567
7568 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7569 "driver auto-selected volume_mode=%d\n",
7570 volume_mode);
7571 } else {
7572 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7573 "using user-supplied volume_mode=%d\n",
7574 volume_mode);
7575 }
7576
7577 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7578 "mute is supported, volume control is %s\n",
7579 str_supported(!tp_features.mixer_no_level_control));
7580
7581 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7582 software_mute_active = true;
7583 } else {
7584 rc = volume_create_alsa_mixer();
7585 if (rc) {
7586 pr_err("Could not create the ALSA mixer interface\n");
7587 return rc;
7588 }
7589
7590 pr_info("Console audio control enabled, mode: %s\n",
7591 (volume_control_allowed) ?
7592 "override (read/write)" :
7593 "monitor (read only)");
7594 }
7595
7596 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7597 "registering volume hotkeys as change notification\n");
7598 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7599 | TP_ACPI_HKEY_VOLUP_MASK
7600 | TP_ACPI_HKEY_VOLDWN_MASK
7601 | TP_ACPI_HKEY_MUTE_MASK);
7602
7603 return 0;
7604 }
7605
volume_read(struct seq_file * m)7606 static int volume_read(struct seq_file *m)
7607 {
7608 u8 status;
7609
7610 if (volume_get_status(&status) < 0) {
7611 seq_printf(m, "level:\t\tunreadable\n");
7612 } else {
7613 if (tp_features.mixer_no_level_control)
7614 seq_printf(m, "level:\t\tunsupported\n");
7615 else
7616 seq_printf(m, "level:\t\t%d\n",
7617 status & TP_EC_AUDIO_LVL_MSK);
7618
7619 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW)));
7620
7621 if (volume_control_allowed) {
7622 seq_printf(m, "commands:\tunmute, mute\n");
7623 if (!tp_features.mixer_no_level_control) {
7624 seq_printf(m, "commands:\tup, down\n");
7625 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
7626 TP_EC_VOLUME_MAX);
7627 }
7628 }
7629 }
7630
7631 return 0;
7632 }
7633
volume_write(char * buf)7634 static int volume_write(char *buf)
7635 {
7636 u8 s;
7637 u8 new_level, new_mute;
7638 int l;
7639 char *cmd;
7640 int rc;
7641
7642 /*
7643 * We do allow volume control at driver startup, so that the
7644 * user can set initial state through the volume=... parameter hack.
7645 */
7646 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7647 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7648 tp_warned.volume_ctrl_forbidden = 1;
7649 pr_notice("Console audio control in monitor mode, changes are not allowed\n");
7650 pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
7651 }
7652 return -EPERM;
7653 }
7654
7655 rc = volume_get_status(&s);
7656 if (rc < 0)
7657 return rc;
7658
7659 new_level = s & TP_EC_AUDIO_LVL_MSK;
7660 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7661
7662 while ((cmd = strsep(&buf, ","))) {
7663 if (!tp_features.mixer_no_level_control) {
7664 if (strstarts(cmd, "up")) {
7665 if (new_mute)
7666 new_mute = 0;
7667 else if (new_level < TP_EC_VOLUME_MAX)
7668 new_level++;
7669 continue;
7670 } else if (strstarts(cmd, "down")) {
7671 if (new_mute)
7672 new_mute = 0;
7673 else if (new_level > 0)
7674 new_level--;
7675 continue;
7676 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7677 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7678 new_level = l;
7679 continue;
7680 }
7681 }
7682 if (strstarts(cmd, "mute"))
7683 new_mute = TP_EC_AUDIO_MUTESW_MSK;
7684 else if (strstarts(cmd, "unmute"))
7685 new_mute = 0;
7686 else
7687 return -EINVAL;
7688 }
7689
7690 if (tp_features.mixer_no_level_control) {
7691 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7692 new_mute ? "" : "un");
7693 rc = volume_set_mute(!!new_mute);
7694 } else {
7695 tpacpi_disclose_usertask("procfs volume",
7696 "%smute and set level to %d\n",
7697 new_mute ? "" : "un", new_level);
7698 rc = volume_set_status(new_mute | new_level);
7699 }
7700 volume_alsa_notify_change();
7701
7702 return (rc == -EINTR) ? -ERESTARTSYS : rc;
7703 }
7704
7705 static struct ibm_struct volume_driver_data = {
7706 .name = "volume",
7707 .read = volume_read,
7708 .write = volume_write,
7709 .exit = volume_exit,
7710 .suspend = volume_suspend,
7711 .resume = volume_resume,
7712 .shutdown = volume_shutdown,
7713 };
7714
7715 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7716
7717 #define alsa_card NULL
7718
volume_alsa_notify_change(void)7719 static inline void volume_alsa_notify_change(void)
7720 {
7721 }
7722
volume_init(struct ibm_init_struct * iibm)7723 static int __init volume_init(struct ibm_init_struct *iibm)
7724 {
7725 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
7726
7727 return -ENODEV;
7728 }
7729
7730 static struct ibm_struct volume_driver_data = {
7731 .name = "volume",
7732 };
7733
7734 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7735
7736 /*************************************************************************
7737 * Fan subdriver
7738 */
7739
7740 /*
7741 * FAN ACCESS MODES
7742 *
7743 * TPACPI_FAN_RD_ACPI_GFAN:
7744 * ACPI GFAN method: returns fan level
7745 *
7746 * see TPACPI_FAN_WR_ACPI_SFAN
7747 * EC 0x2f (HFSP) not available if GFAN exists
7748 *
7749 * TPACPI_FAN_WR_ACPI_SFAN:
7750 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7751 *
7752 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7753 * it for writing.
7754 *
7755 * TPACPI_FAN_RD_ACPI_FANG:
7756 * ACPI FANG method: returns fan control register
7757 *
7758 * Takes one parameter which is 0x8100 plus the offset to EC memory
7759 * address 0xf500 and returns the byte at this address.
7760 *
7761 * 0xf500:
7762 * When the value is less than 9 automatic mode is enabled
7763 * 0xf502:
7764 * Contains the current fan speed from 0-100%
7765 * 0xf506:
7766 * Bit 7 has to be set in order to enable manual control by
7767 * writing a value >= 9 to 0xf500
7768 *
7769 * TPACPI_FAN_WR_ACPI_FANW:
7770 * ACPI FANW method: sets fan control registers
7771 *
7772 * Takes 0x8100 plus the offset to EC memory address 0xf500 and the
7773 * value to be written there as parameters.
7774 *
7775 * see TPACPI_FAN_RD_ACPI_FANG
7776 *
7777 * TPACPI_FAN_WR_TPEC:
7778 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7779 * Supported on almost all ThinkPads
7780 *
7781 * Fan speed changes of any sort (including those caused by the
7782 * disengaged mode) are usually done slowly by the firmware as the
7783 * maximum amount of fan duty cycle change per second seems to be
7784 * limited.
7785 *
7786 * Reading is not available if GFAN exists.
7787 * Writing is not available if SFAN exists.
7788 *
7789 * Bits
7790 * 7 automatic mode engaged;
7791 * (default operation mode of the ThinkPad)
7792 * fan level is ignored in this mode.
7793 * 6 full speed mode (takes precedence over bit 7);
7794 * not available on all thinkpads. May disable
7795 * the tachometer while the fan controller ramps up
7796 * the speed (which can take up to a few *minutes*).
7797 * Speeds up fan to 100% duty-cycle, which is far above
7798 * the standard RPM levels. It is not impossible that
7799 * it could cause hardware damage.
7800 * 5-3 unused in some models. Extra bits for fan level
7801 * in others, but still useless as all values above
7802 * 7 map to the same speed as level 7 in these models.
7803 * 2-0 fan level (0..7 usually)
7804 * 0x00 = stop
7805 * 0x07 = max (set when temperatures critical)
7806 * Some ThinkPads may have other levels, see
7807 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7808 *
7809 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7810 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
7811 * does so, its initial value is meaningless (0x07).
7812 *
7813 * For firmware bugs, refer to:
7814 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7815 *
7816 * ----
7817 *
7818 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7819 * Main fan tachometer reading (in RPM)
7820 *
7821 * This register is present on all ThinkPads with a new-style EC, and
7822 * it is known not to be present on the A21m/e, and T22, as there is
7823 * something else in offset 0x84 according to the ACPI DSDT. Other
7824 * ThinkPads from this same time period (and earlier) probably lack the
7825 * tachometer as well.
7826 *
7827 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7828 * was never fixed by IBM to report the EC firmware version string
7829 * probably support the tachometer (like the early X models), so
7830 * detecting it is quite hard. We need more data to know for sure.
7831 *
7832 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7833 * might result.
7834 *
7835 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7836 * mode.
7837 *
7838 * For firmware bugs, refer to:
7839 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7840 *
7841 * ----
7842 *
7843 * ThinkPad EC register 0x31 bit 0 (only on select models)
7844 *
7845 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7846 * show the speed of the main fan. When bit 0 of EC register 0x31
7847 * is one, the tachometer registers show the speed of the auxiliary
7848 * fan.
7849 *
7850 * Fan control seems to affect both fans, regardless of the state
7851 * of this bit.
7852 *
7853 * So far, only the firmware for the X60/X61 non-tablet versions
7854 * seem to support this (firmware TP-7M).
7855 *
7856 * TPACPI_FAN_WR_ACPI_FANS:
7857 * ThinkPad X31, X40, X41. Not available in the X60.
7858 *
7859 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7860 * high speed. ACPI DSDT seems to map these three speeds to levels
7861 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7862 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7863 *
7864 * The speeds are stored on handles
7865 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7866 *
7867 * There are three default speed sets, accessible as handles:
7868 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7869 *
7870 * ACPI DSDT switches which set is in use depending on various
7871 * factors.
7872 *
7873 * TPACPI_FAN_WR_TPEC is also available and should be used to
7874 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7875 * but the ACPI tables just mention level 7.
7876 *
7877 * TPACPI_FAN_RD_TPEC_NS:
7878 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.)
7879 * that are using non-standard EC locations for reporting fan speeds.
7880 * Currently these platforms only provide fan rpm reporting.
7881 *
7882 */
7883
7884 #define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */
7885
7886 #define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */
7887 #define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */
7888 #define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */
7889
7890 enum { /* Fan control constants */
7891 fan_status_offset = 0x2f, /* EC register 0x2f */
7892 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7893 * 0x84 must be read before 0x85 */
7894 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7895 bit 0 selects which fan is active */
7896
7897 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */
7898 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */
7899 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */
7900 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */
7901
7902 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7903 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7904
7905 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7906 };
7907
7908 enum fan_status_access_mode {
7909 TPACPI_FAN_NONE = 0, /* No fan status or control */
7910 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7911 TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */
7912 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7913 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */
7914 };
7915
7916 enum fan_control_access_mode {
7917 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7918 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7919 TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */
7920 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7921 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7922 };
7923
7924 enum fan_control_commands {
7925 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7926 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7927 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7928 * and also watchdog cmd */
7929 };
7930
7931 static bool fan_control_allowed;
7932
7933 static enum fan_status_access_mode fan_status_access_mode;
7934 static enum fan_control_access_mode fan_control_access_mode;
7935 static enum fan_control_commands fan_control_commands;
7936
7937 static u8 fan_control_initial_status;
7938 static u8 fan_control_desired_level;
7939 static u8 fan_control_resume_level;
7940 static int fan_watchdog_maxinterval;
7941
7942 static bool fan_with_ns_addr;
7943 static bool ecfw_with_fan_dec_rpm;
7944 static bool fan_speed_in_tpr;
7945
7946 static struct mutex fan_mutex;
7947
7948 static void fan_watchdog_fire(struct work_struct *ignored);
7949 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
7950
7951 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7952 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
7953 "\\FSPD", /* 600e/x, 770e, 770x */
7954 ); /* all others */
7955 TPACPI_HANDLE(fang, ec, "FANG", /* E531 */
7956 ); /* all others */
7957 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
7958 "JFNS", /* 770x-JL */
7959 ); /* all others */
7960 TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */
7961 ); /* all others */
7962
7963 /*
7964 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7965 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7966 * be in auto mode (0x80).
7967 *
7968 * This is corrected by any write to HFSP either by the driver, or
7969 * by the firmware.
7970 *
7971 * We assume 0x07 really means auto mode while this quirk is active,
7972 * as this is far more likely than the ThinkPad being in level 7,
7973 * which is only used by the firmware during thermal emergencies.
7974 *
7975 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7976 * TP-70 (T43, R52), which are known to be buggy.
7977 */
7978
fan_quirk1_setup(void)7979 static void fan_quirk1_setup(void)
7980 {
7981 if (fan_control_initial_status == 0x07) {
7982 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
7983 tp_features.fan_ctrl_status_undef = 1;
7984 }
7985 }
7986
fan_quirk1_handle(u8 * fan_status)7987 static void fan_quirk1_handle(u8 *fan_status)
7988 {
7989 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7990 if (*fan_status != fan_control_initial_status) {
7991 /* something changed the HFSP regisnter since
7992 * driver init time, so it is not undefined
7993 * anymore */
7994 tp_features.fan_ctrl_status_undef = 0;
7995 } else {
7996 /* Return most likely status. In fact, it
7997 * might be the only possible status */
7998 *fan_status = TP_EC_FAN_AUTO;
7999 }
8000 }
8001 }
8002
8003 /* Select main fan on X60/X61, NOOP on others */
fan_select_fan1(void)8004 static bool fan_select_fan1(void)
8005 {
8006 if (tp_features.second_fan) {
8007 u8 val;
8008
8009 if (ec_read(fan_select_offset, &val) < 0)
8010 return false;
8011 val &= 0xFEU;
8012 if (ec_write(fan_select_offset, val) < 0)
8013 return false;
8014 }
8015 return true;
8016 }
8017
8018 /* Select secondary fan on X60/X61 */
fan_select_fan2(void)8019 static bool fan_select_fan2(void)
8020 {
8021 u8 val;
8022
8023 if (!tp_features.second_fan)
8024 return false;
8025
8026 if (ec_read(fan_select_offset, &val) < 0)
8027 return false;
8028 val |= 0x01U;
8029 if (ec_write(fan_select_offset, val) < 0)
8030 return false;
8031
8032 return true;
8033 }
8034
fan_update_desired_level(u8 status)8035 static void fan_update_desired_level(u8 status)
8036 {
8037 lockdep_assert_held(&fan_mutex);
8038
8039 if ((status &
8040 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8041 if (status > 7)
8042 fan_control_desired_level = 7;
8043 else
8044 fan_control_desired_level = status;
8045 }
8046 }
8047
fan_get_status(u8 * status)8048 static int fan_get_status(u8 *status)
8049 {
8050 u8 s;
8051
8052 /* TODO:
8053 * Add TPACPI_FAN_RD_ACPI_FANS ? */
8054
8055 switch (fan_status_access_mode) {
8056 case TPACPI_FAN_RD_ACPI_GFAN: {
8057 /* 570, 600e/x, 770e, 770x */
8058 int res;
8059
8060 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
8061 return -EIO;
8062
8063 if (likely(status))
8064 *status = res & 0x07;
8065
8066 break;
8067 }
8068 case TPACPI_FAN_RD_ACPI_FANG: {
8069 /* E531 */
8070 int mode, speed;
8071
8072 if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100)))
8073 return -EIO;
8074 if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102)))
8075 return -EIO;
8076
8077 if (likely(status)) {
8078 *status = speed * 7 / 100;
8079 if (mode < 9)
8080 *status |= TP_EC_FAN_AUTO;
8081 }
8082
8083 break;
8084 }
8085 case TPACPI_FAN_RD_TPEC:
8086 /* all except 570, 600e/x, 770e, 770x */
8087 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
8088 return -EIO;
8089
8090 if (likely(status)) {
8091 *status = s;
8092 fan_quirk1_handle(status);
8093 }
8094
8095 break;
8096 case TPACPI_FAN_RD_TPEC_NS:
8097 /* Default mode is AUTO which means controlled by EC */
8098 if (!acpi_ec_read(fan_status_offset_ns, &s))
8099 return -EIO;
8100
8101 if (status)
8102 *status = s;
8103
8104 break;
8105
8106 default:
8107 return -ENXIO;
8108 }
8109
8110 return 0;
8111 }
8112
fan_get_status_safe(u8 * status)8113 static int fan_get_status_safe(u8 *status)
8114 {
8115 int rc;
8116 u8 s;
8117
8118 if (mutex_lock_killable(&fan_mutex))
8119 return -ERESTARTSYS;
8120 rc = fan_get_status(&s);
8121 /* NS EC doesn't have register with level settings */
8122 if (!rc && !fan_with_ns_addr)
8123 fan_update_desired_level(s);
8124 mutex_unlock(&fan_mutex);
8125
8126 if (rc)
8127 return rc;
8128 if (status)
8129 *status = s;
8130
8131 return 0;
8132 }
8133
fan_get_speed(unsigned int * speed)8134 static int fan_get_speed(unsigned int *speed)
8135 {
8136 u8 hi, lo;
8137
8138 switch (fan_status_access_mode) {
8139 case TPACPI_FAN_RD_TPEC:
8140 /* all except 570, 600e/x, 770e, 770x */
8141 if (unlikely(!fan_select_fan1()))
8142 return -EIO;
8143 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
8144 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
8145 return -EIO;
8146
8147 if (likely(speed)) {
8148 *speed = (hi << 8) | lo;
8149 if (fan_speed_in_tpr && *speed != 0)
8150 *speed = FAN_CLOCK_TPM / *speed;
8151 }
8152 break;
8153 case TPACPI_FAN_RD_TPEC_NS:
8154 if (!acpi_ec_read(fan_rpm_status_ns, &lo))
8155 return -EIO;
8156
8157 if (speed)
8158 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
8159 break;
8160
8161 default:
8162 return -ENXIO;
8163 }
8164
8165 return 0;
8166 }
8167
fan2_get_speed(unsigned int * speed)8168 static int fan2_get_speed(unsigned int *speed)
8169 {
8170 u8 hi, lo, status;
8171 bool rc;
8172
8173 switch (fan_status_access_mode) {
8174 case TPACPI_FAN_RD_TPEC:
8175 /* all except 570, 600e/x, 770e, 770x */
8176 if (unlikely(!fan_select_fan2()))
8177 return -EIO;
8178 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
8179 !acpi_ec_read(fan_rpm_offset + 1, &hi);
8180 fan_select_fan1(); /* play it safe */
8181 if (rc)
8182 return -EIO;
8183
8184 if (likely(speed)) {
8185 *speed = (hi << 8) | lo;
8186 if (fan_speed_in_tpr && *speed != 0)
8187 *speed = FAN_CLOCK_TPM / *speed;
8188 }
8189 break;
8190
8191 case TPACPI_FAN_RD_TPEC_NS:
8192 rc = !acpi_ec_read(fan2_status_offset_ns, &status);
8193 if (rc)
8194 return -EIO;
8195 if (!(status & FAN_NS_CTRL_STATUS)) {
8196 pr_info("secondary fan control not supported\n");
8197 return -EIO;
8198 }
8199 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo);
8200 if (rc)
8201 return -EIO;
8202 if (speed)
8203 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
8204 break;
8205 case TPACPI_FAN_RD_ACPI_FANG: {
8206 /* E531 */
8207 int speed_tmp;
8208
8209 if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102)))
8210 return -EIO;
8211
8212 if (likely(speed))
8213 *speed = speed_tmp * 65535 / 100;
8214 break;
8215 }
8216
8217 default:
8218 return -ENXIO;
8219 }
8220
8221 return 0;
8222 }
8223
fan_set_level(int level)8224 static int fan_set_level(int level)
8225 {
8226 if (!fan_control_allowed)
8227 return -EPERM;
8228
8229 switch (fan_control_access_mode) {
8230 case TPACPI_FAN_WR_ACPI_SFAN:
8231 if ((level < 0) || (level > 7))
8232 return -EINVAL;
8233
8234 if (tp_features.second_fan_ctl) {
8235 if (!fan_select_fan2() ||
8236 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
8237 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8238 tp_features.second_fan_ctl = 0;
8239 }
8240 fan_select_fan1();
8241 }
8242 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
8243 return -EIO;
8244 break;
8245
8246 case TPACPI_FAN_WR_ACPI_FANS:
8247 case TPACPI_FAN_WR_TPEC:
8248 if (!(level & TP_EC_FAN_AUTO) &&
8249 !(level & TP_EC_FAN_FULLSPEED) &&
8250 ((level < 0) || (level > 7)))
8251 return -EINVAL;
8252
8253 /* safety net should the EC not support AUTO
8254 * or FULLSPEED mode bits and just ignore them */
8255 if (level & TP_EC_FAN_FULLSPEED)
8256 level |= 7; /* safety min speed 7 */
8257 else if (level & TP_EC_FAN_AUTO)
8258 level |= 4; /* safety min speed 4 */
8259
8260 if (tp_features.second_fan_ctl) {
8261 if (!fan_select_fan2() ||
8262 !acpi_ec_write(fan_status_offset, level)) {
8263 pr_warn("Couldn't set 2nd fan level, disabling support\n");
8264 tp_features.second_fan_ctl = 0;
8265 }
8266 fan_select_fan1();
8267
8268 }
8269 if (!acpi_ec_write(fan_status_offset, level))
8270 return -EIO;
8271 else
8272 tp_features.fan_ctrl_status_undef = 0;
8273 break;
8274
8275 case TPACPI_FAN_WR_ACPI_FANW:
8276 if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7))
8277 return -EINVAL;
8278 if (level & TP_EC_FAN_FULLSPEED)
8279 return -EINVAL;
8280
8281 if (level & TP_EC_FAN_AUTO) {
8282 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
8283 return -EIO;
8284 }
8285 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
8286 return -EIO;
8287 }
8288 } else {
8289 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
8290 return -EIO;
8291 }
8292 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
8293 return -EIO;
8294 }
8295 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) {
8296 return -EIO;
8297 }
8298 }
8299 break;
8300
8301 default:
8302 return -ENXIO;
8303 }
8304
8305 vdbg_printk(TPACPI_DBG_FAN,
8306 "fan control: set fan control register to 0x%02x\n", level);
8307 return 0;
8308 }
8309
fan_set_level_safe(int level)8310 static int fan_set_level_safe(int level)
8311 {
8312 int rc;
8313
8314 if (!fan_control_allowed)
8315 return -EPERM;
8316
8317 if (mutex_lock_killable(&fan_mutex))
8318 return -ERESTARTSYS;
8319
8320 if (level == TPACPI_FAN_LAST_LEVEL)
8321 level = fan_control_desired_level;
8322
8323 rc = fan_set_level(level);
8324 if (!rc)
8325 fan_update_desired_level(level);
8326
8327 mutex_unlock(&fan_mutex);
8328 return rc;
8329 }
8330
fan_set_enable(void)8331 static int fan_set_enable(void)
8332 {
8333 u8 s = 0;
8334 int rc;
8335
8336 if (!fan_control_allowed)
8337 return -EPERM;
8338
8339 if (mutex_lock_killable(&fan_mutex))
8340 return -ERESTARTSYS;
8341
8342 switch (fan_control_access_mode) {
8343 case TPACPI_FAN_WR_ACPI_FANS:
8344 case TPACPI_FAN_WR_TPEC:
8345 rc = fan_get_status(&s);
8346 if (rc)
8347 break;
8348
8349 /* Don't go out of emergency fan mode */
8350 if (s != 7) {
8351 s &= 0x07;
8352 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
8353 }
8354
8355 if (!acpi_ec_write(fan_status_offset, s))
8356 rc = -EIO;
8357 else {
8358 tp_features.fan_ctrl_status_undef = 0;
8359 rc = 0;
8360 }
8361 break;
8362
8363 case TPACPI_FAN_WR_ACPI_SFAN:
8364 rc = fan_get_status(&s);
8365 if (rc)
8366 break;
8367
8368 s &= 0x07;
8369
8370 /* Set fan to at least level 4 */
8371 s |= 4;
8372
8373 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
8374 rc = -EIO;
8375 else
8376 rc = 0;
8377 break;
8378
8379 case TPACPI_FAN_WR_ACPI_FANW:
8380 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
8381 rc = -EIO;
8382 break;
8383 }
8384 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
8385 rc = -EIO;
8386 break;
8387 }
8388
8389 rc = 0;
8390 break;
8391
8392 default:
8393 rc = -ENXIO;
8394 }
8395
8396 mutex_unlock(&fan_mutex);
8397
8398 if (!rc)
8399 vdbg_printk(TPACPI_DBG_FAN,
8400 "fan control: set fan control register to 0x%02x\n",
8401 s);
8402 return rc;
8403 }
8404
fan_set_disable(void)8405 static int fan_set_disable(void)
8406 {
8407 int rc;
8408
8409 if (!fan_control_allowed)
8410 return -EPERM;
8411
8412 if (mutex_lock_killable(&fan_mutex))
8413 return -ERESTARTSYS;
8414
8415 rc = 0;
8416 switch (fan_control_access_mode) {
8417 case TPACPI_FAN_WR_ACPI_FANS:
8418 case TPACPI_FAN_WR_TPEC:
8419 if (!acpi_ec_write(fan_status_offset, 0x00))
8420 rc = -EIO;
8421 else {
8422 fan_control_desired_level = 0;
8423 tp_features.fan_ctrl_status_undef = 0;
8424 }
8425 break;
8426
8427 case TPACPI_FAN_WR_ACPI_SFAN:
8428 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
8429 rc = -EIO;
8430 else
8431 fan_control_desired_level = 0;
8432 break;
8433
8434 case TPACPI_FAN_WR_ACPI_FANW:
8435 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
8436 rc = -EIO;
8437 break;
8438 }
8439 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
8440 rc = -EIO;
8441 break;
8442 }
8443 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) {
8444 rc = -EIO;
8445 break;
8446 }
8447 rc = 0;
8448 break;
8449
8450 default:
8451 rc = -ENXIO;
8452 }
8453
8454 if (!rc)
8455 vdbg_printk(TPACPI_DBG_FAN,
8456 "fan control: set fan control register to 0\n");
8457
8458 mutex_unlock(&fan_mutex);
8459 return rc;
8460 }
8461
fan_set_speed(int speed)8462 static int fan_set_speed(int speed)
8463 {
8464 int rc;
8465
8466 if (!fan_control_allowed)
8467 return -EPERM;
8468
8469 if (mutex_lock_killable(&fan_mutex))
8470 return -ERESTARTSYS;
8471
8472 rc = 0;
8473 switch (fan_control_access_mode) {
8474 case TPACPI_FAN_WR_ACPI_FANS:
8475 if (speed >= 0 && speed <= 65535) {
8476 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
8477 speed, speed, speed))
8478 rc = -EIO;
8479 } else
8480 rc = -EINVAL;
8481 break;
8482
8483 case TPACPI_FAN_WR_ACPI_FANW:
8484 if (speed >= 0 && speed <= 65535) {
8485 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
8486 rc = -EIO;
8487 break;
8488 }
8489 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
8490 rc = -EIO;
8491 break;
8492 }
8493 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd",
8494 0x8102, speed * 100 / 65535))
8495 rc = -EIO;
8496 } else
8497 rc = -EINVAL;
8498 break;
8499
8500 default:
8501 rc = -ENXIO;
8502 }
8503
8504 mutex_unlock(&fan_mutex);
8505 return rc;
8506 }
8507
fan_watchdog_reset(void)8508 static void fan_watchdog_reset(void)
8509 {
8510 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
8511 return;
8512
8513 if (fan_watchdog_maxinterval > 0 &&
8514 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
8515 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
8516 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
8517 else
8518 cancel_delayed_work(&fan_watchdog_task);
8519 }
8520
fan_watchdog_fire(struct work_struct * ignored)8521 static void fan_watchdog_fire(struct work_struct *ignored)
8522 {
8523 int rc;
8524
8525 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
8526 return;
8527
8528 pr_notice("fan watchdog: enabling fan\n");
8529 rc = fan_set_enable();
8530 if (rc < 0) {
8531 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
8532 rc);
8533 /* reschedule for later */
8534 fan_watchdog_reset();
8535 }
8536 }
8537
8538 /*
8539 * SYSFS fan layout: hwmon compatible (device)
8540 *
8541 * pwm*_enable:
8542 * 0: "disengaged" mode
8543 * 1: manual mode
8544 * 2: native EC "auto" mode (recommended, hardware default)
8545 *
8546 * pwm*: set speed in manual mode, ignored otherwise.
8547 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8548 * interpolation.
8549 *
8550 * fan*_input: tachometer reading, RPM
8551 *
8552 *
8553 * SYSFS fan layout: extensions
8554 *
8555 * fan_watchdog (driver):
8556 * fan watchdog interval in seconds, 0 disables (default), max 120
8557 */
8558
8559 /* sysfs fan pwm1_enable ----------------------------------------------- */
fan_pwm1_enable_show(struct device * dev,struct device_attribute * attr,char * buf)8560 static ssize_t fan_pwm1_enable_show(struct device *dev,
8561 struct device_attribute *attr,
8562 char *buf)
8563 {
8564 int res, mode;
8565 u8 status;
8566
8567 res = fan_get_status_safe(&status);
8568 if (res)
8569 return res;
8570
8571 if (status & TP_EC_FAN_FULLSPEED) {
8572 mode = 0;
8573 } else if (status & TP_EC_FAN_AUTO) {
8574 mode = 2;
8575 } else
8576 mode = 1;
8577
8578 return sysfs_emit(buf, "%d\n", mode);
8579 }
8580
fan_pwm1_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)8581 static ssize_t fan_pwm1_enable_store(struct device *dev,
8582 struct device_attribute *attr,
8583 const char *buf, size_t count)
8584 {
8585 unsigned long t;
8586 int res, level;
8587
8588 if (parse_strtoul(buf, 2, &t))
8589 return -EINVAL;
8590
8591 tpacpi_disclose_usertask("hwmon pwm1_enable",
8592 "set fan mode to %lu\n", t);
8593
8594 switch (t) {
8595 case 0:
8596 level = TP_EC_FAN_FULLSPEED;
8597 break;
8598 case 1:
8599 level = TPACPI_FAN_LAST_LEVEL;
8600 break;
8601 case 2:
8602 level = TP_EC_FAN_AUTO;
8603 break;
8604 case 3:
8605 /* reserved for software-controlled auto mode */
8606 return -ENOSYS;
8607 default:
8608 return -EINVAL;
8609 }
8610
8611 res = fan_set_level_safe(level);
8612 if (res == -ENXIO)
8613 return -EINVAL;
8614 else if (res < 0)
8615 return res;
8616
8617 fan_watchdog_reset();
8618
8619 return count;
8620 }
8621
8622 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8623 fan_pwm1_enable_show, fan_pwm1_enable_store);
8624
8625 /* sysfs fan pwm1 ------------------------------------------------------ */
fan_pwm1_show(struct device * dev,struct device_attribute * attr,char * buf)8626 static ssize_t fan_pwm1_show(struct device *dev,
8627 struct device_attribute *attr,
8628 char *buf)
8629 {
8630 int res;
8631 u8 status;
8632
8633 res = fan_get_status_safe(&status);
8634 if (res)
8635 return res;
8636
8637 if ((status &
8638 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8639 status = fan_control_desired_level;
8640
8641 if (status > 7)
8642 status = 7;
8643
8644 return sysfs_emit(buf, "%u\n", (status * 255) / 7);
8645 }
8646
fan_pwm1_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)8647 static ssize_t fan_pwm1_store(struct device *dev,
8648 struct device_attribute *attr,
8649 const char *buf, size_t count)
8650 {
8651 unsigned long s;
8652 int rc;
8653 u8 status, newlevel;
8654
8655 if (parse_strtoul(buf, 255, &s))
8656 return -EINVAL;
8657
8658 tpacpi_disclose_usertask("hwmon pwm1",
8659 "set fan speed to %lu\n", s);
8660
8661 /* scale down from 0-255 to 0-7 */
8662 newlevel = (s >> 5) & 0x07;
8663
8664 if (mutex_lock_killable(&fan_mutex))
8665 return -ERESTARTSYS;
8666
8667 rc = fan_get_status(&status);
8668 if (!rc && (status &
8669 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8670 rc = fan_set_level(newlevel);
8671 if (rc == -ENXIO)
8672 rc = -EINVAL;
8673 else if (!rc) {
8674 fan_update_desired_level(newlevel);
8675 fan_watchdog_reset();
8676 }
8677 }
8678
8679 mutex_unlock(&fan_mutex);
8680 return (rc) ? rc : count;
8681 }
8682
8683 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
8684
8685 /* sysfs fan fan1_input ------------------------------------------------ */
fan_fan1_input_show(struct device * dev,struct device_attribute * attr,char * buf)8686 static ssize_t fan_fan1_input_show(struct device *dev,
8687 struct device_attribute *attr,
8688 char *buf)
8689 {
8690 int res;
8691 unsigned int speed;
8692
8693 res = fan_get_speed(&speed);
8694 if (res < 0)
8695 return res;
8696
8697 /* Check for fan speeds displayed in hexadecimal */
8698 if (!ecfw_with_fan_dec_rpm)
8699 return sysfs_emit(buf, "%u\n", speed);
8700 else
8701 return sysfs_emit(buf, "%x\n", speed);
8702 }
8703
8704 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
8705
8706 /* sysfs fan fan2_input ------------------------------------------------ */
fan_fan2_input_show(struct device * dev,struct device_attribute * attr,char * buf)8707 static ssize_t fan_fan2_input_show(struct device *dev,
8708 struct device_attribute *attr,
8709 char *buf)
8710 {
8711 int res;
8712 unsigned int speed;
8713
8714 res = fan2_get_speed(&speed);
8715 if (res < 0)
8716 return res;
8717
8718 /* Check for fan speeds displayed in hexadecimal */
8719 if (!ecfw_with_fan_dec_rpm)
8720 return sysfs_emit(buf, "%u\n", speed);
8721 else
8722 return sysfs_emit(buf, "%x\n", speed);
8723 }
8724
8725 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
8726
8727 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
fan_watchdog_show(struct device_driver * drv,char * buf)8728 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
8729 {
8730 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval);
8731 }
8732
fan_watchdog_store(struct device_driver * drv,const char * buf,size_t count)8733 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
8734 size_t count)
8735 {
8736 unsigned long t;
8737
8738 if (parse_strtoul(buf, 120, &t))
8739 return -EINVAL;
8740
8741 if (!fan_control_allowed)
8742 return -EPERM;
8743
8744 fan_watchdog_maxinterval = t;
8745 fan_watchdog_reset();
8746
8747 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8748
8749 return count;
8750 }
8751 static DRIVER_ATTR_RW(fan_watchdog);
8752
8753 /* --------------------------------------------------------------------- */
8754
8755 static struct attribute *fan_attributes[] = {
8756 &dev_attr_pwm1_enable.attr,
8757 &dev_attr_pwm1.attr,
8758 &dev_attr_fan1_input.attr,
8759 &dev_attr_fan2_input.attr,
8760 NULL
8761 };
8762
fan_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)8763 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
8764 int n)
8765 {
8766 if (fan_status_access_mode == TPACPI_FAN_NONE &&
8767 fan_control_access_mode == TPACPI_FAN_WR_NONE)
8768 return 0;
8769
8770 if (attr == &dev_attr_fan2_input.attr) {
8771 if (!tp_features.second_fan)
8772 return 0;
8773 }
8774
8775 return attr->mode;
8776 }
8777
8778 static const struct attribute_group fan_attr_group = {
8779 .is_visible = fan_attr_is_visible,
8780 .attrs = fan_attributes,
8781 };
8782
8783 static struct attribute *fan_driver_attributes[] = {
8784 &driver_attr_fan_watchdog.attr,
8785 NULL
8786 };
8787
8788 static const struct attribute_group fan_driver_attr_group = {
8789 .is_visible = fan_attr_is_visible,
8790 .attrs = fan_driver_attributes,
8791 };
8792
8793 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */
8794 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
8795 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */
8796 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */
8797 #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */
8798 #define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */
8799 #define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */
8800
8801 static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8802 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
8803 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1),
8804 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1),
8805 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
8806 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
8807 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
8808 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */
8809 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */
8810 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */
8811 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */
8812 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */
8813 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */
8814 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */
8815 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */
8816 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */
8817 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */
8818 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */
8819 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/
8820 TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */
8821 TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */
8822 TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */
8823 TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */
8824 TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */
8825 TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */
8826 TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */
8827 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */
8828 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */
8829 TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */
8830 };
8831
fan_init(struct ibm_init_struct * iibm)8832 static int __init fan_init(struct ibm_init_struct *iibm)
8833 {
8834 unsigned long quirks;
8835
8836 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8837 "initializing fan subdriver\n");
8838
8839 mutex_init(&fan_mutex);
8840 fan_status_access_mode = TPACPI_FAN_NONE;
8841 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8842 fan_control_commands = 0;
8843 fan_watchdog_maxinterval = 0;
8844 tp_features.fan_ctrl_status_undef = 0;
8845 tp_features.second_fan = 0;
8846 tp_features.second_fan_ctl = 0;
8847 fan_control_desired_level = 7;
8848
8849 if (tpacpi_is_ibm()) {
8850 TPACPI_ACPIHANDLE_INIT(fans);
8851 TPACPI_ACPIHANDLE_INIT(gfan);
8852 TPACPI_ACPIHANDLE_INIT(sfan);
8853 }
8854 if (tpacpi_is_lenovo()) {
8855 TPACPI_ACPIHANDLE_INIT(fang);
8856 TPACPI_ACPIHANDLE_INIT(fanw);
8857 }
8858
8859 quirks = tpacpi_check_quirks(fan_quirk_table,
8860 ARRAY_SIZE(fan_quirk_table));
8861
8862 if (quirks & TPACPI_FAN_NOFAN) {
8863 pr_info("No integrated ThinkPad fan available\n");
8864 return -ENODEV;
8865 }
8866
8867 if (quirks & TPACPI_FAN_NS) {
8868 pr_info("ECFW with non-standard fan reg control found\n");
8869 fan_with_ns_addr = 1;
8870 /* Fan ctrl support from host is undefined for now */
8871 tp_features.fan_ctrl_status_undef = 1;
8872 }
8873
8874 /* Check for the EC/BIOS with RPM reported in decimal*/
8875 if (quirks & TPACPI_FAN_DECRPM) {
8876 pr_info("ECFW with fan RPM as decimal in EC register\n");
8877 ecfw_with_fan_dec_rpm = 1;
8878 tp_features.fan_ctrl_status_undef = 1;
8879 }
8880
8881 if (gfan_handle) {
8882 /* 570, 600e/x, 770e, 770x */
8883 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8884 } else if (fang_handle) {
8885 /* E531 */
8886 fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG;
8887 } else {
8888 /* all other ThinkPads: note that even old-style
8889 * ThinkPad ECs supports the fan control register */
8890 if (fan_with_ns_addr ||
8891 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) {
8892 int res;
8893 unsigned int speed;
8894
8895 fan_status_access_mode = fan_with_ns_addr ?
8896 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC;
8897
8898 if (quirks & TPACPI_FAN_Q1)
8899 fan_quirk1_setup();
8900 if (quirks & TPACPI_FAN_TPR)
8901 fan_speed_in_tpr = true;
8902 /* Try and probe the 2nd fan */
8903 tp_features.second_fan = 1; /* needed for get_speed to work */
8904 res = fan2_get_speed(&speed);
8905 if (res >= 0 && speed != FAN_NOT_PRESENT) {
8906 /* It responded - so let's assume it's there */
8907 tp_features.second_fan = 1;
8908 /* fan control not currently available for ns ECFW */
8909 tp_features.second_fan_ctl = !fan_with_ns_addr;
8910 pr_info("secondary fan control detected & enabled\n");
8911 } else {
8912 /* Fan not auto-detected */
8913 tp_features.second_fan = 0;
8914 if (quirks & TPACPI_FAN_2FAN) {
8915 tp_features.second_fan = 1;
8916 pr_info("secondary fan support enabled\n");
8917 }
8918 if (quirks & TPACPI_FAN_2CTL) {
8919 tp_features.second_fan = 1;
8920 tp_features.second_fan_ctl = 1;
8921 pr_info("secondary fan control enabled\n");
8922 }
8923 }
8924 } else {
8925 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
8926 return -ENODEV;
8927 }
8928 }
8929
8930 if (sfan_handle) {
8931 /* 570, 770x-JL */
8932 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8933 fan_control_commands |=
8934 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8935 } else if (fanw_handle) {
8936 /* E531 */
8937 fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW;
8938 fan_control_commands |=
8939 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE;
8940 } else {
8941 if (!gfan_handle) {
8942 /* gfan without sfan means no fan control */
8943 /* all other models implement TP EC 0x2f control */
8944
8945 if (fans_handle) {
8946 /* X31, X40, X41 */
8947 fan_control_access_mode =
8948 TPACPI_FAN_WR_ACPI_FANS;
8949 fan_control_commands |=
8950 TPACPI_FAN_CMD_SPEED |
8951 TPACPI_FAN_CMD_LEVEL |
8952 TPACPI_FAN_CMD_ENABLE;
8953 } else {
8954 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8955 fan_control_commands |=
8956 TPACPI_FAN_CMD_LEVEL |
8957 TPACPI_FAN_CMD_ENABLE;
8958 }
8959 }
8960 }
8961
8962 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8963 "fan is %s, modes %d, %d\n",
8964 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8965 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8966 fan_status_access_mode, fan_control_access_mode);
8967
8968 /* fan control master switch */
8969 if (!fan_control_allowed) {
8970 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8971 fan_control_commands = 0;
8972 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8973 "fan control features disabled by parameter\n");
8974 }
8975
8976 /* update fan_control_desired_level */
8977 if (fan_status_access_mode != TPACPI_FAN_NONE)
8978 fan_get_status_safe(NULL);
8979
8980 if (fan_status_access_mode == TPACPI_FAN_NONE &&
8981 fan_control_access_mode == TPACPI_FAN_WR_NONE)
8982 return -ENODEV;
8983
8984 return 0;
8985 }
8986
fan_exit(void)8987 static void fan_exit(void)
8988 {
8989 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
8990 "cancelling any pending fan watchdog tasks\n");
8991
8992 cancel_delayed_work(&fan_watchdog_task);
8993 flush_workqueue(tpacpi_wq);
8994 }
8995
fan_suspend(void)8996 static void fan_suspend(void)
8997 {
8998 int rc;
8999
9000 if (!fan_control_allowed)
9001 return;
9002
9003 /* Store fan status in cache */
9004 fan_control_resume_level = 0;
9005 rc = fan_get_status_safe(&fan_control_resume_level);
9006 if (rc)
9007 pr_notice("failed to read fan level for later restore during resume: %d\n",
9008 rc);
9009
9010 /* if it is undefined, don't attempt to restore it.
9011 * KEEP THIS LAST */
9012 if (tp_features.fan_ctrl_status_undef)
9013 fan_control_resume_level = 0;
9014 }
9015
fan_resume(void)9016 static void fan_resume(void)
9017 {
9018 u8 current_level = 7;
9019 bool do_set = false;
9020 int rc;
9021
9022 /* DSDT *always* updates status on resume */
9023 tp_features.fan_ctrl_status_undef = 0;
9024
9025 if (!fan_control_allowed ||
9026 !fan_control_resume_level ||
9027 fan_get_status_safe(¤t_level))
9028 return;
9029
9030 switch (fan_control_access_mode) {
9031 case TPACPI_FAN_WR_ACPI_SFAN:
9032 /* never decrease fan level */
9033 do_set = (fan_control_resume_level > current_level);
9034 break;
9035 case TPACPI_FAN_WR_ACPI_FANS:
9036 case TPACPI_FAN_WR_TPEC:
9037 /* never decrease fan level, scale is:
9038 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
9039 *
9040 * We expect the firmware to set either 7 or AUTO, but we
9041 * handle FULLSPEED out of paranoia.
9042 *
9043 * So, we can safely only restore FULLSPEED or 7, anything
9044 * else could slow the fan. Restoring AUTO is useless, at
9045 * best that's exactly what the DSDT already set (it is the
9046 * slower it uses).
9047 *
9048 * Always keep in mind that the DSDT *will* have set the
9049 * fans to what the vendor supposes is the best level. We
9050 * muck with it only to speed the fan up.
9051 */
9052 if (fan_control_resume_level != 7 &&
9053 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
9054 return;
9055 else
9056 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
9057 (current_level != fan_control_resume_level);
9058 break;
9059 default:
9060 return;
9061 }
9062 if (do_set) {
9063 pr_notice("restoring fan level to 0x%02x\n",
9064 fan_control_resume_level);
9065 rc = fan_set_level_safe(fan_control_resume_level);
9066 if (rc < 0)
9067 pr_notice("failed to restore fan level: %d\n", rc);
9068 }
9069 }
9070
fan_read(struct seq_file * m)9071 static int fan_read(struct seq_file *m)
9072 {
9073 int rc;
9074 u8 status;
9075 unsigned int speed = 0;
9076
9077 switch (fan_status_access_mode) {
9078 case TPACPI_FAN_RD_ACPI_GFAN:
9079 /* 570, 600e/x, 770e, 770x */
9080 rc = fan_get_status_safe(&status);
9081 if (rc)
9082 return rc;
9083
9084 seq_printf(m, "status:\t\t%s\n"
9085 "level:\t\t%d\n",
9086 str_enabled_disabled(status), status);
9087 break;
9088
9089 case TPACPI_FAN_RD_TPEC_NS:
9090 case TPACPI_FAN_RD_TPEC:
9091 case TPACPI_FAN_RD_ACPI_FANG:
9092 /* all except 570, 600e/x, 770e, 770x */
9093 rc = fan_get_status_safe(&status);
9094 if (rc)
9095 return rc;
9096
9097 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status));
9098
9099 rc = fan_get_speed(&speed);
9100 if (rc < 0)
9101 return rc;
9102
9103 /* Check for fan speeds displayed in hexadecimal */
9104 if (!ecfw_with_fan_dec_rpm)
9105 seq_printf(m, "speed:\t\t%d\n", speed);
9106 else
9107 seq_printf(m, "speed:\t\t%x\n", speed);
9108
9109 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) {
9110 /*
9111 * No full speed bit in NS EC
9112 * EC Auto mode is set by default.
9113 * No other levels settings available
9114 */
9115 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto");
9116 } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) {
9117 if (status & TP_EC_FAN_FULLSPEED)
9118 /* Disengaged mode takes precedence */
9119 seq_printf(m, "level:\t\tdisengaged\n");
9120 else if (status & TP_EC_FAN_AUTO)
9121 seq_printf(m, "level:\t\tauto\n");
9122 else
9123 seq_printf(m, "level:\t\t%d\n", status);
9124 }
9125 break;
9126
9127 case TPACPI_FAN_NONE:
9128 default:
9129 seq_printf(m, "status:\t\tnot supported\n");
9130 }
9131
9132 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
9133 seq_printf(m, "commands:\tlevel <level>");
9134
9135 switch (fan_control_access_mode) {
9136 case TPACPI_FAN_WR_ACPI_SFAN:
9137 seq_printf(m, " (<level> is 0-7)\n");
9138 break;
9139
9140 default:
9141 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
9142 break;
9143 }
9144 }
9145
9146 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
9147 seq_printf(m, "commands:\tenable, disable\n"
9148 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
9149
9150 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
9151 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
9152
9153 return 0;
9154 }
9155
fan_write_cmd_level(const char * cmd,int * rc)9156 static int fan_write_cmd_level(const char *cmd, int *rc)
9157 {
9158 int level;
9159
9160 if (strstarts(cmd, "level auto"))
9161 level = TP_EC_FAN_AUTO;
9162 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed"))
9163 level = TP_EC_FAN_FULLSPEED;
9164 else if (sscanf(cmd, "level %d", &level) != 1)
9165 return 0;
9166
9167 *rc = fan_set_level_safe(level);
9168 if (*rc == -ENXIO)
9169 pr_err("level command accepted for unsupported access mode %d\n",
9170 fan_control_access_mode);
9171 else if (!*rc)
9172 tpacpi_disclose_usertask("procfs fan",
9173 "set level to %d\n", level);
9174
9175 return 1;
9176 }
9177
fan_write_cmd_enable(const char * cmd,int * rc)9178 static int fan_write_cmd_enable(const char *cmd, int *rc)
9179 {
9180 if (!strstarts(cmd, "enable"))
9181 return 0;
9182
9183 *rc = fan_set_enable();
9184 if (*rc == -ENXIO)
9185 pr_err("enable command accepted for unsupported access mode %d\n",
9186 fan_control_access_mode);
9187 else if (!*rc)
9188 tpacpi_disclose_usertask("procfs fan", "enable\n");
9189
9190 return 1;
9191 }
9192
fan_write_cmd_disable(const char * cmd,int * rc)9193 static int fan_write_cmd_disable(const char *cmd, int *rc)
9194 {
9195 if (!strstarts(cmd, "disable"))
9196 return 0;
9197
9198 *rc = fan_set_disable();
9199 if (*rc == -ENXIO)
9200 pr_err("disable command accepted for unsupported access mode %d\n",
9201 fan_control_access_mode);
9202 else if (!*rc)
9203 tpacpi_disclose_usertask("procfs fan", "disable\n");
9204
9205 return 1;
9206 }
9207
fan_write_cmd_speed(const char * cmd,int * rc)9208 static int fan_write_cmd_speed(const char *cmd, int *rc)
9209 {
9210 int speed;
9211
9212 /* TODO:
9213 * Support speed <low> <medium> <high> ? */
9214
9215 if (sscanf(cmd, "speed %d", &speed) != 1)
9216 return 0;
9217
9218 *rc = fan_set_speed(speed);
9219 if (*rc == -ENXIO)
9220 pr_err("speed command accepted for unsupported access mode %d\n",
9221 fan_control_access_mode);
9222 else if (!*rc)
9223 tpacpi_disclose_usertask("procfs fan",
9224 "set speed to %d\n", speed);
9225
9226 return 1;
9227 }
9228
fan_write_cmd_watchdog(const char * cmd,int * rc)9229 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
9230 {
9231 int interval;
9232
9233 if (sscanf(cmd, "watchdog %d", &interval) != 1)
9234 return 0;
9235
9236 if (interval < 0 || interval > 120)
9237 *rc = -EINVAL;
9238 else {
9239 fan_watchdog_maxinterval = interval;
9240 tpacpi_disclose_usertask("procfs fan",
9241 "set watchdog timer to %d\n",
9242 interval);
9243 }
9244
9245 return 1;
9246 }
9247
fan_write(char * buf)9248 static int fan_write(char *buf)
9249 {
9250 char *cmd;
9251 int rc = 0;
9252
9253 while (!rc && (cmd = strsep(&buf, ","))) {
9254 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
9255 fan_write_cmd_level(cmd, &rc)) &&
9256 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
9257 (fan_write_cmd_enable(cmd, &rc) ||
9258 fan_write_cmd_disable(cmd, &rc) ||
9259 fan_write_cmd_watchdog(cmd, &rc))) &&
9260 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
9261 fan_write_cmd_speed(cmd, &rc))
9262 )
9263 rc = -EINVAL;
9264 else if (!rc)
9265 fan_watchdog_reset();
9266 }
9267
9268 return rc;
9269 }
9270
9271 static struct ibm_struct fan_driver_data = {
9272 .name = "fan",
9273 .read = fan_read,
9274 .write = fan_write,
9275 .exit = fan_exit,
9276 .suspend = fan_suspend,
9277 .resume = fan_resume,
9278 };
9279
9280 /*************************************************************************
9281 * Mute LED subdriver
9282 */
9283
9284 #define TPACPI_LED_MAX 2
9285
9286 struct tp_led_table {
9287 acpi_string name;
9288 int on_value;
9289 int off_value;
9290 int state;
9291 };
9292
9293 static struct tp_led_table led_tables[TPACPI_LED_MAX] = {
9294 [LED_AUDIO_MUTE] = {
9295 .name = "SSMS",
9296 .on_value = 1,
9297 .off_value = 0,
9298 },
9299 [LED_AUDIO_MICMUTE] = {
9300 .name = "MMTS",
9301 .on_value = 2,
9302 .off_value = 0,
9303 },
9304 };
9305
mute_led_on_off(struct tp_led_table * t,bool state)9306 static int mute_led_on_off(struct tp_led_table *t, bool state)
9307 {
9308 acpi_handle temp;
9309 int output;
9310
9311 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
9312 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
9313 return -EIO;
9314 }
9315
9316 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
9317 state ? t->on_value : t->off_value))
9318 return -EIO;
9319
9320 t->state = state;
9321 return state;
9322 }
9323
tpacpi_led_set(int whichled,bool on)9324 static int tpacpi_led_set(int whichled, bool on)
9325 {
9326 struct tp_led_table *t;
9327
9328 t = &led_tables[whichled];
9329 if (t->state < 0 || t->state == on)
9330 return t->state;
9331 return mute_led_on_off(t, on);
9332 }
9333
tpacpi_led_mute_set(struct led_classdev * led_cdev,enum led_brightness brightness)9334 static int tpacpi_led_mute_set(struct led_classdev *led_cdev,
9335 enum led_brightness brightness)
9336 {
9337 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF);
9338 }
9339
tpacpi_led_micmute_set(struct led_classdev * led_cdev,enum led_brightness brightness)9340 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev,
9341 enum led_brightness brightness)
9342 {
9343 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF);
9344 }
9345
9346 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = {
9347 [LED_AUDIO_MUTE] = {
9348 .name = "platform::mute",
9349 .max_brightness = 1,
9350 .brightness_set_blocking = tpacpi_led_mute_set,
9351 .default_trigger = "audio-mute",
9352 },
9353 [LED_AUDIO_MICMUTE] = {
9354 .name = "platform::micmute",
9355 .max_brightness = 1,
9356 .brightness_set_blocking = tpacpi_led_micmute_set,
9357 .default_trigger = "audio-micmute",
9358 },
9359 };
9360
mute_led_init(struct ibm_init_struct * iibm)9361 static int mute_led_init(struct ibm_init_struct *iibm)
9362 {
9363 acpi_handle temp;
9364 int i, err;
9365
9366 for (i = 0; i < TPACPI_LED_MAX; i++) {
9367 struct tp_led_table *t = &led_tables[i];
9368 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
9369 t->state = -ENODEV;
9370 continue;
9371 }
9372
9373 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
9374 if (err < 0) {
9375 while (i--)
9376 led_classdev_unregister(&mute_led_cdev[i]);
9377 return err;
9378 }
9379 }
9380 return 0;
9381 }
9382
mute_led_exit(void)9383 static void mute_led_exit(void)
9384 {
9385 int i;
9386
9387 for (i = 0; i < TPACPI_LED_MAX; i++) {
9388 led_classdev_unregister(&mute_led_cdev[i]);
9389 tpacpi_led_set(i, false);
9390 }
9391 }
9392
mute_led_resume(void)9393 static void mute_led_resume(void)
9394 {
9395 int i;
9396
9397 for (i = 0; i < TPACPI_LED_MAX; i++) {
9398 struct tp_led_table *t = &led_tables[i];
9399 if (t->state >= 0)
9400 mute_led_on_off(t, t->state);
9401 }
9402 }
9403
9404 static struct ibm_struct mute_led_driver_data = {
9405 .name = "mute_led",
9406 .exit = mute_led_exit,
9407 .resume = mute_led_resume,
9408 };
9409
9410 /*
9411 * Battery Wear Control Driver
9412 * Contact: Ognjen Galic <smclt30p@gmail.com>
9413 */
9414
9415 /* Metadata */
9416
9417 #define GET_START "BCTG"
9418 #define SET_START "BCCS"
9419 #define GET_STOP "BCSG"
9420 #define SET_STOP "BCSS"
9421 #define GET_DISCHARGE "BDSG"
9422 #define SET_DISCHARGE "BDSS"
9423 #define GET_INHIBIT "BICG"
9424 #define SET_INHIBIT "BICS"
9425
9426 enum {
9427 BAT_ANY = 0,
9428 BAT_PRIMARY = 1,
9429 BAT_SECONDARY = 2
9430 };
9431
9432 enum {
9433 /* Error condition bit */
9434 METHOD_ERR = BIT(31),
9435 };
9436
9437 enum {
9438 /* This is used in the get/set helpers */
9439 THRESHOLD_START,
9440 THRESHOLD_STOP,
9441 FORCE_DISCHARGE,
9442 INHIBIT_CHARGE,
9443 };
9444
9445 struct tpacpi_battery_data {
9446 int charge_start;
9447 int start_support;
9448 int charge_stop;
9449 int stop_support;
9450 unsigned int charge_behaviours;
9451 };
9452
9453 struct tpacpi_battery_driver_data {
9454 struct tpacpi_battery_data batteries[3];
9455 int individual_addressing;
9456 };
9457
9458 static struct tpacpi_battery_driver_data battery_info;
9459
9460 /* ACPI helpers/functions/probes */
9461
9462 /*
9463 * This evaluates a ACPI method call specific to the battery
9464 * ACPI extension. The specifics are that an error is marked
9465 * in the 32rd bit of the response, so we just check that here.
9466 */
tpacpi_battery_acpi_eval(char * method,int * ret,int param)9467 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
9468 {
9469 int response;
9470
9471 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
9472 acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
9473 return AE_ERROR;
9474 }
9475 if (response & METHOD_ERR) {
9476 acpi_handle_err(hkey_handle,
9477 "%s evaluated but flagged as error", method);
9478 return AE_ERROR;
9479 }
9480 *ret = response;
9481 return AE_OK;
9482 }
9483
tpacpi_battery_get(int what,int battery,int * ret)9484 static int tpacpi_battery_get(int what, int battery, int *ret)
9485 {
9486 switch (what) {
9487 case THRESHOLD_START:
9488 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
9489 return -ENODEV;
9490
9491 /* The value is in the low 8 bits of the response */
9492 *ret = *ret & 0xFF;
9493 return 0;
9494 case THRESHOLD_STOP:
9495 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
9496 return -ENODEV;
9497 /* Value is in lower 8 bits */
9498 *ret = *ret & 0xFF;
9499 /*
9500 * On the stop value, if we return 0 that
9501 * does not make any sense. 0 means Default, which
9502 * means that charging stops at 100%, so we return
9503 * that.
9504 */
9505 if (*ret == 0)
9506 *ret = 100;
9507 return 0;
9508 case FORCE_DISCHARGE:
9509 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery))
9510 return -ENODEV;
9511 /* The force discharge status is in bit 0 */
9512 *ret = *ret & 0x01;
9513 return 0;
9514 case INHIBIT_CHARGE:
9515 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery))
9516 return -ENODEV;
9517 /* The inhibit charge status is in bit 0 */
9518 *ret = *ret & 0x01;
9519 return 0;
9520 default:
9521 pr_crit("wrong parameter: %d", what);
9522 return -EINVAL;
9523 }
9524 }
9525
tpacpi_battery_set(int what,int battery,int value)9526 static int tpacpi_battery_set(int what, int battery, int value)
9527 {
9528 int param, ret;
9529 /* The first 8 bits are the value of the threshold */
9530 param = value;
9531 /* The battery ID is in bits 8-9, 2 bits */
9532 param |= battery << 8;
9533
9534 switch (what) {
9535 case THRESHOLD_START:
9536 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
9537 pr_err("failed to set charge threshold on battery %d",
9538 battery);
9539 return -ENODEV;
9540 }
9541 return 0;
9542 case THRESHOLD_STOP:
9543 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
9544 pr_err("failed to set stop threshold: %d", battery);
9545 return -ENODEV;
9546 }
9547 return 0;
9548 case FORCE_DISCHARGE:
9549 /* Force discharge is in bit 0,
9550 * break on AC attach is in bit 1 (won't work on some ThinkPads),
9551 * battery ID is in bits 8-9, 2 bits.
9552 */
9553 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) {
9554 pr_err("failed to set force discharge on %d", battery);
9555 return -ENODEV;
9556 }
9557 return 0;
9558 case INHIBIT_CHARGE:
9559 /* When setting inhibit charge, we set a default value of
9560 * always breaking on AC detach and the effective time is set to
9561 * be permanent.
9562 * The battery ID is in bits 4-5, 2 bits,
9563 * the effective time is in bits 8-23, 2 bytes.
9564 * A time of FFFF indicates forever.
9565 */
9566 param = value;
9567 param |= battery << 4;
9568 param |= 0xFFFF << 8;
9569 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) {
9570 pr_err("failed to set inhibit charge on %d", battery);
9571 return -ENODEV;
9572 }
9573 return 0;
9574 default:
9575 pr_crit("wrong parameter: %d", what);
9576 return -EINVAL;
9577 }
9578 }
9579
tpacpi_battery_set_validate(int what,int battery,int value)9580 static int tpacpi_battery_set_validate(int what, int battery, int value)
9581 {
9582 int ret, v;
9583
9584 ret = tpacpi_battery_set(what, battery, value);
9585 if (ret < 0)
9586 return ret;
9587
9588 ret = tpacpi_battery_get(what, battery, &v);
9589 if (ret < 0)
9590 return ret;
9591
9592 if (v == value)
9593 return 0;
9594
9595 msleep(500);
9596
9597 ret = tpacpi_battery_get(what, battery, &v);
9598 if (ret < 0)
9599 return ret;
9600
9601 if (v == value)
9602 return 0;
9603
9604 return -EIO;
9605 }
9606
tpacpi_battery_probe(int battery)9607 static int tpacpi_battery_probe(int battery)
9608 {
9609 int ret = 0;
9610
9611 memset(&battery_info.batteries[battery], 0,
9612 sizeof(battery_info.batteries[battery]));
9613
9614 /*
9615 * 1) Get the current start threshold
9616 * 2) Check for support
9617 * 3) Get the current stop threshold
9618 * 4) Check for support
9619 * 5) Get the current force discharge status
9620 * 6) Check for support
9621 * 7) Get the current inhibit charge status
9622 * 8) Check for support
9623 */
9624 if (acpi_has_method(hkey_handle, GET_START)) {
9625 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
9626 pr_err("Error probing battery %d\n", battery);
9627 return -ENODEV;
9628 }
9629 /* Individual addressing is in bit 9 */
9630 if (ret & BIT(9))
9631 battery_info.individual_addressing = true;
9632 /* Support is marked in bit 8 */
9633 if (ret & BIT(8))
9634 battery_info.batteries[battery].start_support = 1;
9635 else
9636 return -ENODEV;
9637 if (tpacpi_battery_get(THRESHOLD_START, battery,
9638 &battery_info.batteries[battery].charge_start)) {
9639 pr_err("Error probing battery %d\n", battery);
9640 return -ENODEV;
9641 }
9642 }
9643 if (acpi_has_method(hkey_handle, GET_STOP)) {
9644 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
9645 pr_err("Error probing battery stop; %d\n", battery);
9646 return -ENODEV;
9647 }
9648 /* Support is marked in bit 8 */
9649 if (ret & BIT(8))
9650 battery_info.batteries[battery].stop_support = 1;
9651 else
9652 return -ENODEV;
9653 if (tpacpi_battery_get(THRESHOLD_STOP, battery,
9654 &battery_info.batteries[battery].charge_stop)) {
9655 pr_err("Error probing battery stop: %d\n", battery);
9656 return -ENODEV;
9657 }
9658 }
9659 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) {
9660 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) {
9661 pr_err("Error probing battery discharge; %d\n", battery);
9662 return -ENODEV;
9663 }
9664 /* Support is marked in bit 8 */
9665 if (ret & BIT(8))
9666 battery_info.batteries[battery].charge_behaviours |=
9667 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE);
9668 }
9669 if (acpi_has_method(hkey_handle, GET_INHIBIT)) {
9670 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) {
9671 pr_err("Error probing battery inhibit charge; %d\n", battery);
9672 return -ENODEV;
9673 }
9674 /* Support is marked in bit 5 */
9675 if (ret & BIT(5))
9676 battery_info.batteries[battery].charge_behaviours |=
9677 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE);
9678 }
9679
9680 battery_info.batteries[battery].charge_behaviours |=
9681 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO);
9682
9683 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n",
9684 battery,
9685 battery_info.batteries[battery].charge_start,
9686 battery_info.batteries[battery].charge_stop,
9687 battery_info.batteries[battery].charge_behaviours);
9688
9689 return 0;
9690 }
9691
9692 /* General helper functions */
9693
tpacpi_battery_get_id(const char * battery_name)9694 static int tpacpi_battery_get_id(const char *battery_name)
9695 {
9696
9697 if (strcmp(battery_name, "BAT0") == 0 ||
9698 tp_features.battery_force_primary)
9699 return BAT_PRIMARY;
9700 if (strcmp(battery_name, "BAT1") == 0)
9701 return BAT_SECONDARY;
9702 /*
9703 * If for some reason the battery is not BAT0 nor is it
9704 * BAT1, we will assume it's the default, first battery,
9705 * AKA primary.
9706 */
9707 pr_warn("unknown battery %s, assuming primary", battery_name);
9708 return BAT_PRIMARY;
9709 }
9710
9711 /* sysfs interface */
9712
tpacpi_battery_store(int what,struct device * dev,const char * buf,size_t count)9713 static ssize_t tpacpi_battery_store(int what,
9714 struct device *dev,
9715 const char *buf, size_t count)
9716 {
9717 struct power_supply *supply = to_power_supply(dev);
9718 unsigned long value;
9719 int battery, rval;
9720 /*
9721 * Some systems have support for more than
9722 * one battery. If that is the case,
9723 * tpacpi_battery_probe marked that addressing
9724 * them individually is supported, so we do that
9725 * based on the device struct.
9726 *
9727 * On systems that are not supported, we assume
9728 * the primary as most of the ACPI calls fail
9729 * with "Any Battery" as the parameter.
9730 */
9731 if (battery_info.individual_addressing)
9732 /* BAT_PRIMARY or BAT_SECONDARY */
9733 battery = tpacpi_battery_get_id(supply->desc->name);
9734 else
9735 battery = BAT_PRIMARY;
9736
9737 rval = kstrtoul(buf, 10, &value);
9738 if (rval)
9739 return rval;
9740
9741 switch (what) {
9742 case THRESHOLD_START:
9743 if (!battery_info.batteries[battery].start_support)
9744 return -ENODEV;
9745 /* valid values are [0, 99] */
9746 if (value > 99)
9747 return -EINVAL;
9748 if (value > battery_info.batteries[battery].charge_stop)
9749 return -EINVAL;
9750 if (tpacpi_battery_set(THRESHOLD_START, battery, value))
9751 return -ENODEV;
9752 battery_info.batteries[battery].charge_start = value;
9753 return count;
9754
9755 case THRESHOLD_STOP:
9756 if (!battery_info.batteries[battery].stop_support)
9757 return -ENODEV;
9758 /* valid values are [1, 100] */
9759 if (value < 1 || value > 100)
9760 return -EINVAL;
9761 if (value < battery_info.batteries[battery].charge_start)
9762 return -EINVAL;
9763 battery_info.batteries[battery].charge_stop = value;
9764 /*
9765 * When 100 is passed to stop, we need to flip
9766 * it to 0 as that the EC understands that as
9767 * "Default", which will charge to 100%
9768 */
9769 if (value == 100)
9770 value = 0;
9771 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
9772 return -EINVAL;
9773 return count;
9774 default:
9775 pr_crit("Wrong parameter: %d", what);
9776 return -EINVAL;
9777 }
9778 return count;
9779 }
9780
tpacpi_battery_show(int what,struct device * dev,char * buf)9781 static ssize_t tpacpi_battery_show(int what,
9782 struct device *dev,
9783 char *buf)
9784 {
9785 struct power_supply *supply = to_power_supply(dev);
9786 int ret, battery;
9787 /*
9788 * Some systems have support for more than
9789 * one battery. If that is the case,
9790 * tpacpi_battery_probe marked that addressing
9791 * them individually is supported, so we;
9792 * based on the device struct.
9793 *
9794 * On systems that are not supported, we assume
9795 * the primary as most of the ACPI calls fail
9796 * with "Any Battery" as the parameter.
9797 */
9798 if (battery_info.individual_addressing)
9799 /* BAT_PRIMARY or BAT_SECONDARY */
9800 battery = tpacpi_battery_get_id(supply->desc->name);
9801 else
9802 battery = BAT_PRIMARY;
9803 if (tpacpi_battery_get(what, battery, &ret))
9804 return -ENODEV;
9805 return sysfs_emit(buf, "%d\n", ret);
9806 }
9807
charge_control_start_threshold_show(struct device * device,struct device_attribute * attr,char * buf)9808 static ssize_t charge_control_start_threshold_show(struct device *device,
9809 struct device_attribute *attr,
9810 char *buf)
9811 {
9812 return tpacpi_battery_show(THRESHOLD_START, device, buf);
9813 }
9814
charge_control_end_threshold_show(struct device * device,struct device_attribute * attr,char * buf)9815 static ssize_t charge_control_end_threshold_show(struct device *device,
9816 struct device_attribute *attr,
9817 char *buf)
9818 {
9819 return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
9820 }
9821
charge_behaviour_show(struct device * dev,struct device_attribute * attr,char * buf)9822 static ssize_t charge_behaviour_show(struct device *dev,
9823 struct device_attribute *attr,
9824 char *buf)
9825 {
9826 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
9827 struct power_supply *supply = to_power_supply(dev);
9828 unsigned int available;
9829 int ret, battery;
9830
9831 battery = tpacpi_battery_get_id(supply->desc->name);
9832 available = battery_info.batteries[battery].charge_behaviours;
9833
9834 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) {
9835 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret))
9836 return -ENODEV;
9837 if (ret) {
9838 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE;
9839 goto out;
9840 }
9841 }
9842
9843 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) {
9844 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret))
9845 return -ENODEV;
9846 if (ret) {
9847 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
9848 goto out;
9849 }
9850 }
9851
9852 out:
9853 return power_supply_charge_behaviour_show(dev, available, active, buf);
9854 }
9855
charge_control_start_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9856 static ssize_t charge_control_start_threshold_store(struct device *dev,
9857 struct device_attribute *attr,
9858 const char *buf, size_t count)
9859 {
9860 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
9861 }
9862
charge_control_end_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9863 static ssize_t charge_control_end_threshold_store(struct device *dev,
9864 struct device_attribute *attr,
9865 const char *buf, size_t count)
9866 {
9867 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
9868 }
9869
charge_behaviour_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9870 static ssize_t charge_behaviour_store(struct device *dev,
9871 struct device_attribute *attr,
9872 const char *buf, size_t count)
9873 {
9874 struct power_supply *supply = to_power_supply(dev);
9875 int selected, battery, ret = 0;
9876 unsigned int available;
9877
9878 battery = tpacpi_battery_get_id(supply->desc->name);
9879 available = battery_info.batteries[battery].charge_behaviours;
9880 selected = power_supply_charge_behaviour_parse(available, buf);
9881
9882 if (selected < 0)
9883 return selected;
9884
9885 switch (selected) {
9886 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
9887 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
9888 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
9889 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
9890 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0));
9891 if (ret < 0)
9892 return ret;
9893 break;
9894 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE:
9895 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
9896 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0);
9897 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1));
9898 if (ret < 0)
9899 return ret;
9900 break;
9901 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
9902 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
9903 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
9904 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1));
9905 if (ret < 0)
9906 return ret;
9907 break;
9908 default:
9909 dev_err(dev, "Unexpected charge behaviour: %d\n", selected);
9910 return -EINVAL;
9911 }
9912
9913 return count;
9914 }
9915
9916 static DEVICE_ATTR_RW(charge_control_start_threshold);
9917 static DEVICE_ATTR_RW(charge_control_end_threshold);
9918 static DEVICE_ATTR_RW(charge_behaviour);
9919 static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
9920 charge_start_threshold,
9921 0644,
9922 charge_control_start_threshold_show,
9923 charge_control_start_threshold_store
9924 );
9925 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
9926 charge_stop_threshold,
9927 0644,
9928 charge_control_end_threshold_show,
9929 charge_control_end_threshold_store
9930 );
9931
9932 static struct attribute *tpacpi_battery_attrs[] = {
9933 &dev_attr_charge_control_start_threshold.attr,
9934 &dev_attr_charge_control_end_threshold.attr,
9935 &dev_attr_charge_start_threshold.attr,
9936 &dev_attr_charge_stop_threshold.attr,
9937 &dev_attr_charge_behaviour.attr,
9938 NULL,
9939 };
9940
9941 ATTRIBUTE_GROUPS(tpacpi_battery);
9942
9943 /* ACPI battery hooking */
9944
tpacpi_battery_add(struct power_supply * battery,struct acpi_battery_hook * hook)9945 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
9946 {
9947 int batteryid = tpacpi_battery_get_id(battery->desc->name);
9948
9949 if (tpacpi_battery_probe(batteryid))
9950 return -ENODEV;
9951 if (device_add_groups(&battery->dev, tpacpi_battery_groups))
9952 return -ENODEV;
9953 return 0;
9954 }
9955
tpacpi_battery_remove(struct power_supply * battery,struct acpi_battery_hook * hook)9956 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
9957 {
9958 device_remove_groups(&battery->dev, tpacpi_battery_groups);
9959 return 0;
9960 }
9961
9962 static struct acpi_battery_hook battery_hook = {
9963 .add_battery = tpacpi_battery_add,
9964 .remove_battery = tpacpi_battery_remove,
9965 .name = "ThinkPad Battery Extension",
9966 };
9967
9968 /* Subdriver init/exit */
9969
9970 static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
9971 /*
9972 * Individual addressing is broken on models that expose the
9973 * primary battery as BAT1.
9974 */
9975 TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */
9976 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */
9977 TPACPI_Q_LNV('J', '7', true), /* B5400 */
9978 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
9979 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
9980 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
9981 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
9982 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
9983 };
9984
tpacpi_battery_init(struct ibm_init_struct * ibm)9985 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
9986 {
9987 memset(&battery_info, 0, sizeof(battery_info));
9988
9989 tp_features.battery_force_primary = tpacpi_check_quirks(
9990 battery_quirk_table,
9991 ARRAY_SIZE(battery_quirk_table));
9992
9993 battery_hook_register(&battery_hook);
9994 return 0;
9995 }
9996
tpacpi_battery_exit(void)9997 static void tpacpi_battery_exit(void)
9998 {
9999 battery_hook_unregister(&battery_hook);
10000 }
10001
10002 static struct ibm_struct battery_driver_data = {
10003 .name = "battery",
10004 .exit = tpacpi_battery_exit,
10005 };
10006
10007 /*************************************************************************
10008 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
10009 */
10010
10011 static struct drm_privacy_screen *lcdshadow_dev;
10012 static acpi_handle lcdshadow_get_handle;
10013 static acpi_handle lcdshadow_set_handle;
10014
lcdshadow_set_sw_state(struct drm_privacy_screen * priv,enum drm_privacy_screen_status state)10015 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv,
10016 enum drm_privacy_screen_status state)
10017 {
10018 int output;
10019
10020 if (WARN_ON(!mutex_is_locked(&priv->lock)))
10021 return -EIO;
10022
10023 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state))
10024 return -EIO;
10025
10026 priv->hw_state = priv->sw_state = state;
10027 return 0;
10028 }
10029
lcdshadow_get_hw_state(struct drm_privacy_screen * priv)10030 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv)
10031 {
10032 int output;
10033
10034 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
10035 return;
10036
10037 priv->hw_state = priv->sw_state = output & 0x1;
10038 }
10039
10040 static const struct drm_privacy_screen_ops lcdshadow_ops = {
10041 .set_sw_state = lcdshadow_set_sw_state,
10042 .get_hw_state = lcdshadow_get_hw_state,
10043 };
10044
tpacpi_lcdshadow_init(struct ibm_init_struct * iibm)10045 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
10046 {
10047 acpi_status status1, status2;
10048 int output;
10049
10050 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle);
10051 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle);
10052 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2))
10053 return 0;
10054
10055 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
10056 return -EIO;
10057
10058 if (!(output & 0x10000))
10059 return 0;
10060
10061 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev,
10062 &lcdshadow_ops, NULL);
10063 if (IS_ERR(lcdshadow_dev))
10064 return PTR_ERR(lcdshadow_dev);
10065
10066 return 0;
10067 }
10068
lcdshadow_exit(void)10069 static void lcdshadow_exit(void)
10070 {
10071 drm_privacy_screen_unregister(lcdshadow_dev);
10072 }
10073
lcdshadow_resume(void)10074 static void lcdshadow_resume(void)
10075 {
10076 if (!lcdshadow_dev)
10077 return;
10078
10079 mutex_lock(&lcdshadow_dev->lock);
10080 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state);
10081 mutex_unlock(&lcdshadow_dev->lock);
10082 }
10083
lcdshadow_read(struct seq_file * m)10084 static int lcdshadow_read(struct seq_file *m)
10085 {
10086 if (!lcdshadow_dev) {
10087 seq_puts(m, "status:\t\tnot supported\n");
10088 } else {
10089 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state);
10090 seq_puts(m, "commands:\t0, 1\n");
10091 }
10092
10093 return 0;
10094 }
10095
lcdshadow_write(char * buf)10096 static int lcdshadow_write(char *buf)
10097 {
10098 char *cmd;
10099 int res, state = -EINVAL;
10100
10101 if (!lcdshadow_dev)
10102 return -ENODEV;
10103
10104 while ((cmd = strsep(&buf, ","))) {
10105 res = kstrtoint(cmd, 10, &state);
10106 if (res < 0)
10107 return res;
10108 }
10109
10110 if (state >= 2 || state < 0)
10111 return -EINVAL;
10112
10113 mutex_lock(&lcdshadow_dev->lock);
10114 res = lcdshadow_set_sw_state(lcdshadow_dev, state);
10115 mutex_unlock(&lcdshadow_dev->lock);
10116
10117 drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
10118
10119 return res;
10120 }
10121
10122 static struct ibm_struct lcdshadow_driver_data = {
10123 .name = "lcdshadow",
10124 .exit = lcdshadow_exit,
10125 .resume = lcdshadow_resume,
10126 .read = lcdshadow_read,
10127 .write = lcdshadow_write,
10128 };
10129
10130 /*************************************************************************
10131 * Thinkpad sensor interfaces
10132 */
10133
10134 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
10135 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
10136 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
10137 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
10138
10139 #define DYTC_CMD_GET 2 /* To get current IC function and mode */
10140 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
10141
10142 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */
10143 #define PALMSENSOR_ON_BIT 1 /* psensor status */
10144
10145 static bool has_palmsensor;
10146 static bool has_lapsensor;
10147 static bool palm_state;
10148 static bool lap_state;
10149 static int dytc_version;
10150
dytc_command(int command,int * output)10151 static int dytc_command(int command, int *output)
10152 {
10153 acpi_handle dytc_handle;
10154
10155 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
10156 /* Platform doesn't support DYTC */
10157 return -ENODEV;
10158 }
10159 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
10160 return -EIO;
10161 return 0;
10162 }
10163
lapsensor_get(bool * present,bool * state)10164 static int lapsensor_get(bool *present, bool *state)
10165 {
10166 int output, err;
10167
10168 *present = false;
10169 err = dytc_command(DYTC_CMD_GET, &output);
10170 if (err)
10171 return err;
10172
10173 *present = true; /*If we get his far, we have lapmode support*/
10174 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
10175 return 0;
10176 }
10177
palmsensor_get(bool * present,bool * state)10178 static int palmsensor_get(bool *present, bool *state)
10179 {
10180 acpi_handle psensor_handle;
10181 int output;
10182
10183 *present = false;
10184 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle)))
10185 return -ENODEV;
10186 if (!acpi_evalf(psensor_handle, &output, NULL, "d"))
10187 return -EIO;
10188
10189 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false;
10190 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false;
10191 return 0;
10192 }
10193
lapsensor_refresh(void)10194 static void lapsensor_refresh(void)
10195 {
10196 bool state;
10197 int err;
10198
10199 if (has_lapsensor) {
10200 err = lapsensor_get(&has_lapsensor, &state);
10201 if (err)
10202 return;
10203 if (lap_state != state) {
10204 lap_state = state;
10205 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
10206 }
10207 }
10208 }
10209
palmsensor_refresh(void)10210 static void palmsensor_refresh(void)
10211 {
10212 bool state;
10213 int err;
10214
10215 if (has_palmsensor) {
10216 err = palmsensor_get(&has_palmsensor, &state);
10217 if (err)
10218 return;
10219 if (palm_state != state) {
10220 palm_state = state;
10221 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor");
10222 }
10223 }
10224 }
10225
dytc_lapmode_show(struct device * dev,struct device_attribute * attr,char * buf)10226 static ssize_t dytc_lapmode_show(struct device *dev,
10227 struct device_attribute *attr,
10228 char *buf)
10229 {
10230 if (has_lapsensor)
10231 return sysfs_emit(buf, "%d\n", lap_state);
10232 return sysfs_emit(buf, "\n");
10233 }
10234 static DEVICE_ATTR_RO(dytc_lapmode);
10235
palmsensor_show(struct device * dev,struct device_attribute * attr,char * buf)10236 static ssize_t palmsensor_show(struct device *dev,
10237 struct device_attribute *attr,
10238 char *buf)
10239 {
10240 if (has_palmsensor)
10241 return sysfs_emit(buf, "%d\n", palm_state);
10242 return sysfs_emit(buf, "\n");
10243 }
10244 static DEVICE_ATTR_RO(palmsensor);
10245
10246 static struct attribute *proxsensor_attributes[] = {
10247 &dev_attr_dytc_lapmode.attr,
10248 &dev_attr_palmsensor.attr,
10249 NULL
10250 };
10251
proxsensor_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10252 static umode_t proxsensor_attr_is_visible(struct kobject *kobj,
10253 struct attribute *attr, int n)
10254 {
10255 if (attr == &dev_attr_dytc_lapmode.attr) {
10256 /*
10257 * Platforms before DYTC version 5 claim to have a lap sensor,
10258 * but it doesn't work, so we ignore them.
10259 */
10260 if (!has_lapsensor || dytc_version < 5)
10261 return 0;
10262 } else if (attr == &dev_attr_palmsensor.attr) {
10263 if (!has_palmsensor)
10264 return 0;
10265 }
10266
10267 return attr->mode;
10268 }
10269
10270 static const struct attribute_group proxsensor_attr_group = {
10271 .is_visible = proxsensor_attr_is_visible,
10272 .attrs = proxsensor_attributes,
10273 };
10274
tpacpi_proxsensor_init(struct ibm_init_struct * iibm)10275 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm)
10276 {
10277 int palm_err, lap_err;
10278
10279 palm_err = palmsensor_get(&has_palmsensor, &palm_state);
10280 lap_err = lapsensor_get(&has_lapsensor, &lap_state);
10281 /* If support isn't available for both devices return -ENODEV */
10282 if ((palm_err == -ENODEV) && (lap_err == -ENODEV))
10283 return -ENODEV;
10284 /* Otherwise, if there was an error return it */
10285 if (palm_err && (palm_err != -ENODEV))
10286 return palm_err;
10287 if (lap_err && (lap_err != -ENODEV))
10288 return lap_err;
10289
10290 return 0;
10291 }
10292
10293 static struct ibm_struct proxsensor_driver_data = {
10294 .name = "proximity-sensor",
10295 };
10296
10297 /*************************************************************************
10298 * DYTC Platform Profile interface
10299 */
10300
10301 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
10302 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */
10303 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */
10304
10305 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */
10306 #define DYTC_FC_MMC 27 /* MMC Mode supported */
10307 #define DYTC_FC_PSC 29 /* PSC Mode supported */
10308 #define DYTC_FC_AMT 31 /* AMT mode supported */
10309
10310 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
10311 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
10312
10313 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
10314 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
10315 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
10316
10317 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
10318 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
10319 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */
10320 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */
10321 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */
10322
10323 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */
10324 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */
10325
10326 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */
10327 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */
10328 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */
10329 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */
10330
10331 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */
10332 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */
10333 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */
10334
10335 #define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */
10336 #define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */
10337 #define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */
10338
10339 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */
10340 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */
10341
10342 #define DYTC_SET_COMMAND(function, mode, on) \
10343 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
10344 (mode) << DYTC_SET_MODE_BIT | \
10345 (on) << DYTC_SET_VALID_BIT)
10346
10347 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0)
10348 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1)
10349 static int dytc_control_amt(bool enable);
10350 static bool dytc_amt_active;
10351
10352 static enum platform_profile_option dytc_current_profile;
10353 static atomic_t dytc_ignore_event = ATOMIC_INIT(0);
10354 static DEFINE_MUTEX(dytc_mutex);
10355 static int dytc_capabilities;
10356 static bool dytc_mmc_get_available;
10357 static int profile_force;
10358
10359 static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER;
10360 static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE;
10361 static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM;
10362
convert_dytc_to_profile(int funcmode,int dytcmode,enum platform_profile_option * profile)10363 static int convert_dytc_to_profile(int funcmode, int dytcmode,
10364 enum platform_profile_option *profile)
10365 {
10366 switch (funcmode) {
10367 case DYTC_FUNCTION_MMC:
10368 switch (dytcmode) {
10369 case DYTC_MODE_MMC_LOWPOWER:
10370 *profile = PLATFORM_PROFILE_LOW_POWER;
10371 break;
10372 case DYTC_MODE_MMC_DEFAULT:
10373 case DYTC_MODE_MMC_BALANCE:
10374 *profile = PLATFORM_PROFILE_BALANCED;
10375 break;
10376 case DYTC_MODE_MMC_PERFORM:
10377 *profile = PLATFORM_PROFILE_PERFORMANCE;
10378 break;
10379 default: /* Unknown mode */
10380 return -EINVAL;
10381 }
10382 return 0;
10383 case DYTC_FUNCTION_PSC:
10384 if (dytcmode == platform_psc_profile_lowpower)
10385 *profile = PLATFORM_PROFILE_LOW_POWER;
10386 else if (dytcmode == platform_psc_profile_balanced)
10387 *profile = PLATFORM_PROFILE_BALANCED;
10388 else if (dytcmode == platform_psc_profile_performance)
10389 *profile = PLATFORM_PROFILE_PERFORMANCE;
10390 else
10391 return -EINVAL;
10392
10393 return 0;
10394 case DYTC_FUNCTION_AMT:
10395 /* For now return balanced. It's the closest we have to 'auto' */
10396 *profile = PLATFORM_PROFILE_BALANCED;
10397 return 0;
10398 default:
10399 /* Unknown function */
10400 pr_debug("unknown function 0x%x\n", funcmode);
10401 return -EOPNOTSUPP;
10402 }
10403 return 0;
10404 }
10405
convert_profile_to_dytc(enum platform_profile_option profile,int * perfmode)10406 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
10407 {
10408 switch (profile) {
10409 case PLATFORM_PROFILE_LOW_POWER:
10410 if (dytc_capabilities & BIT(DYTC_FC_MMC))
10411 *perfmode = DYTC_MODE_MMC_LOWPOWER;
10412 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
10413 *perfmode = platform_psc_profile_lowpower;
10414 break;
10415 case PLATFORM_PROFILE_BALANCED:
10416 if (dytc_capabilities & BIT(DYTC_FC_MMC))
10417 *perfmode = DYTC_MODE_MMC_BALANCE;
10418 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
10419 *perfmode = platform_psc_profile_balanced;
10420 break;
10421 case PLATFORM_PROFILE_PERFORMANCE:
10422 if (dytc_capabilities & BIT(DYTC_FC_MMC))
10423 *perfmode = DYTC_MODE_MMC_PERFORM;
10424 else if (dytc_capabilities & BIT(DYTC_FC_PSC))
10425 *perfmode = platform_psc_profile_performance;
10426 break;
10427 default: /* Unknown profile */
10428 return -EOPNOTSUPP;
10429 }
10430 return 0;
10431 }
10432
10433 /*
10434 * dytc_profile_get: Function to register with platform_profile
10435 * handler. Returns current platform profile.
10436 */
dytc_profile_get(struct device * dev,enum platform_profile_option * profile)10437 static int dytc_profile_get(struct device *dev,
10438 enum platform_profile_option *profile)
10439 {
10440 *profile = dytc_current_profile;
10441 return 0;
10442 }
10443
dytc_control_amt(bool enable)10444 static int dytc_control_amt(bool enable)
10445 {
10446 int dummy;
10447 int err;
10448 int cmd;
10449
10450 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) {
10451 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n");
10452 return -ENODEV;
10453 }
10454
10455 if (enable)
10456 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable);
10457 else
10458 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable);
10459
10460 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd);
10461 err = dytc_command(cmd, &dummy);
10462 if (err)
10463 return err;
10464 dytc_amt_active = enable;
10465 return 0;
10466 }
10467
10468 /*
10469 * Helper function - check if we are in CQL mode and if we are
10470 * - disable CQL,
10471 * - run the command
10472 * - enable CQL
10473 * If not in CQL mode, just run the command
10474 */
dytc_cql_command(int command,int * output)10475 static int dytc_cql_command(int command, int *output)
10476 {
10477 int err, cmd_err, dummy;
10478 int cur_funcmode;
10479
10480 /* Determine if we are in CQL mode. This alters the commands we do */
10481 err = dytc_command(DYTC_CMD_GET, output);
10482 if (err)
10483 return err;
10484
10485 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
10486 /* Check if we're OK to return immediately */
10487 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL))
10488 return 0;
10489
10490 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10491 atomic_inc(&dytc_ignore_event);
10492 err = dytc_command(DYTC_DISABLE_CQL, &dummy);
10493 if (err)
10494 return err;
10495 }
10496
10497 cmd_err = dytc_command(command, output);
10498 /* Check return condition after we've restored CQL state */
10499
10500 if (cur_funcmode == DYTC_FUNCTION_CQL) {
10501 err = dytc_command(DYTC_ENABLE_CQL, &dummy);
10502 if (err)
10503 return err;
10504 }
10505 return cmd_err;
10506 }
10507
10508 /*
10509 * dytc_profile_set: Function to register with platform_profile
10510 * handler. Sets current platform profile.
10511 */
dytc_profile_set(struct device * dev,enum platform_profile_option profile)10512 static int dytc_profile_set(struct device *dev,
10513 enum platform_profile_option profile)
10514 {
10515 int perfmode;
10516 int output;
10517 int err;
10518
10519 err = mutex_lock_interruptible(&dytc_mutex);
10520 if (err)
10521 return err;
10522
10523 err = convert_profile_to_dytc(profile, &perfmode);
10524 if (err)
10525 goto unlock;
10526
10527 if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
10528 if (profile == PLATFORM_PROFILE_BALANCED) {
10529 /*
10530 * To get back to balanced mode we need to issue a reset command.
10531 * Note we still need to disable CQL mode before hand and re-enable
10532 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays
10533 * stuck at 0 for aprox. 30 minutes.
10534 */
10535 err = dytc_cql_command(DYTC_CMD_RESET, &output);
10536 if (err)
10537 goto unlock;
10538 } else {
10539 /* Determine if we are in CQL mode. This alters the commands we do */
10540 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
10541 &output);
10542 if (err)
10543 goto unlock;
10544 }
10545 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
10546 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output);
10547 if (err)
10548 goto unlock;
10549
10550 /* system supports AMT, activate it when on balanced */
10551 if (dytc_capabilities & BIT(DYTC_FC_AMT))
10552 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED);
10553 }
10554 /* Success - update current profile */
10555 dytc_current_profile = profile;
10556 unlock:
10557 mutex_unlock(&dytc_mutex);
10558 return err;
10559 }
10560
dytc_profile_probe(void * drvdata,unsigned long * choices)10561 static int dytc_profile_probe(void *drvdata, unsigned long *choices)
10562 {
10563 set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
10564 set_bit(PLATFORM_PROFILE_BALANCED, choices);
10565 set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
10566
10567 return 0;
10568 }
10569
10570 static const struct platform_profile_ops dytc_profile_ops = {
10571 .probe = dytc_profile_probe,
10572 .profile_get = dytc_profile_get,
10573 .profile_set = dytc_profile_set,
10574 };
10575
dytc_profile_refresh(void)10576 static void dytc_profile_refresh(void)
10577 {
10578 enum platform_profile_option profile;
10579 int output = 0, err = 0;
10580 int perfmode, funcmode = 0;
10581
10582 mutex_lock(&dytc_mutex);
10583 if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
10584 if (dytc_mmc_get_available)
10585 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10586 else
10587 err = dytc_cql_command(DYTC_CMD_GET, &output);
10588 funcmode = DYTC_FUNCTION_MMC;
10589 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
10590 err = dytc_command(DYTC_CMD_GET, &output);
10591 /* Check if we are PSC mode, or have AMT enabled */
10592 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
10593 } else { /* Unknown profile mode */
10594 err = -ENODEV;
10595 }
10596 mutex_unlock(&dytc_mutex);
10597 if (err)
10598 return;
10599
10600 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
10601 err = convert_dytc_to_profile(funcmode, perfmode, &profile);
10602 if (!err && profile != dytc_current_profile) {
10603 dytc_current_profile = profile;
10604 platform_profile_notify(tpacpi_pprof);
10605 }
10606 }
10607
tpacpi_dytc_profile_init(struct ibm_init_struct * iibm)10608 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
10609 {
10610 int err, output;
10611
10612 err = dytc_command(DYTC_CMD_QUERY, &output);
10613 if (err)
10614 return err;
10615
10616 if (output & BIT(DYTC_QUERY_ENABLE_BIT))
10617 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
10618
10619 dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version);
10620 /* Check DYTC is enabled and supports mode setting */
10621 if (dytc_version < 5)
10622 return -ENODEV;
10623
10624 /* Check what capabilities are supported */
10625 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities);
10626 if (err)
10627 return err;
10628
10629 /* Check if user wants to override the profile selection */
10630 if (profile_force) {
10631 switch (profile_force) {
10632 case -1:
10633 dytc_capabilities = 0;
10634 break;
10635 case 1:
10636 dytc_capabilities = BIT(DYTC_FC_MMC);
10637 break;
10638 case 2:
10639 dytc_capabilities = BIT(DYTC_FC_PSC);
10640 break;
10641 }
10642 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities);
10643 }
10644 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */
10645 pr_debug("MMC is supported\n");
10646 /*
10647 * Check if MMC_GET functionality available
10648 * Version > 6 and return success from MMC_GET command
10649 */
10650 dytc_mmc_get_available = false;
10651 if (dytc_version >= 6) {
10652 err = dytc_command(DYTC_CMD_MMC_GET, &output);
10653 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS))
10654 dytc_mmc_get_available = true;
10655 }
10656 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */
10657 pr_debug("PSC is supported\n");
10658 if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */
10659 platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER;
10660 platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE;
10661 platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM;
10662 }
10663 } else {
10664 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
10665 return -ENODEV;
10666 }
10667
10668 dbg_printk(TPACPI_DBG_INIT,
10669 "DYTC version %d: thermal mode available\n", dytc_version);
10670
10671 /* Create platform_profile structure and register */
10672 tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile",
10673 NULL, &dytc_profile_ops);
10674 /*
10675 * If for some reason platform_profiles aren't enabled
10676 * don't quit terminally.
10677 */
10678 if (IS_ERR(tpacpi_pprof))
10679 return -ENODEV;
10680
10681 /* Ensure initial values are correct */
10682 dytc_profile_refresh();
10683
10684 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
10685 if (dytc_capabilities & BIT(DYTC_FC_PSC))
10686 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
10687
10688 return 0;
10689 }
10690
dytc_profile_exit(void)10691 static void dytc_profile_exit(void)
10692 {
10693 if (!IS_ERR_OR_NULL(tpacpi_pprof))
10694 platform_profile_remove(tpacpi_pprof);
10695 }
10696
10697 static struct ibm_struct dytc_profile_driver_data = {
10698 .name = "dytc-profile",
10699 .exit = dytc_profile_exit,
10700 };
10701
10702 /*************************************************************************
10703 * Keyboard language interface
10704 */
10705
10706 struct keyboard_lang_data {
10707 const char *lang_str;
10708 int lang_code;
10709 };
10710
10711 static const struct keyboard_lang_data keyboard_lang_data[] = {
10712 {"be", 0x080c},
10713 {"cz", 0x0405},
10714 {"da", 0x0406},
10715 {"de", 0x0c07},
10716 {"en", 0x0000},
10717 {"es", 0x2c0a},
10718 {"et", 0x0425},
10719 {"fr", 0x040c},
10720 {"fr-ch", 0x100c},
10721 {"hu", 0x040e},
10722 {"it", 0x0410},
10723 {"jp", 0x0411},
10724 {"nl", 0x0413},
10725 {"nn", 0x0414},
10726 {"pl", 0x0415},
10727 {"pt", 0x0816},
10728 {"sl", 0x041b},
10729 {"sv", 0x081d},
10730 {"tr", 0x041f},
10731 };
10732
set_keyboard_lang_command(int command)10733 static int set_keyboard_lang_command(int command)
10734 {
10735 acpi_handle sskl_handle;
10736 int output;
10737
10738 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
10739 /* Platform doesn't support SSKL */
10740 return -ENODEV;
10741 }
10742
10743 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
10744 return -EIO;
10745
10746 return 0;
10747 }
10748
get_keyboard_lang(int * output)10749 static int get_keyboard_lang(int *output)
10750 {
10751 acpi_handle gskl_handle;
10752 int kbd_lang;
10753
10754 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
10755 /* Platform doesn't support GSKL */
10756 return -ENODEV;
10757 }
10758
10759 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
10760 return -EIO;
10761
10762 /*
10763 * METHOD_ERR gets returned on devices where there are no special (e.g. '=',
10764 * '(' and ')') keys which use layout dependent key-press emulation.
10765 */
10766 if (kbd_lang & METHOD_ERR)
10767 return -ENODEV;
10768
10769 *output = kbd_lang;
10770
10771 return 0;
10772 }
10773
10774 /* sysfs keyboard language entry */
keyboard_lang_show(struct device * dev,struct device_attribute * attr,char * buf)10775 static ssize_t keyboard_lang_show(struct device *dev,
10776 struct device_attribute *attr,
10777 char *buf)
10778 {
10779 int output, err, i, len = 0;
10780
10781 err = get_keyboard_lang(&output);
10782 if (err)
10783 return err;
10784
10785 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10786 if (i)
10787 len += sysfs_emit_at(buf, len, "%s", " ");
10788
10789 if (output == keyboard_lang_data[i].lang_code) {
10790 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str);
10791 } else {
10792 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str);
10793 }
10794 }
10795 len += sysfs_emit_at(buf, len, "\n");
10796
10797 return len;
10798 }
10799
keyboard_lang_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)10800 static ssize_t keyboard_lang_store(struct device *dev,
10801 struct device_attribute *attr,
10802 const char *buf, size_t count)
10803 {
10804 int err, i;
10805 bool lang_found = false;
10806 int lang_code = 0;
10807
10808 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
10809 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
10810 lang_code = keyboard_lang_data[i].lang_code;
10811 lang_found = true;
10812 break;
10813 }
10814 }
10815
10816 if (lang_found) {
10817 lang_code = lang_code | 1 << 24;
10818
10819 /* Set language code */
10820 err = set_keyboard_lang_command(lang_code);
10821 if (err)
10822 return err;
10823 } else {
10824 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n");
10825 return -EINVAL;
10826 }
10827
10828 tpacpi_disclose_usertask(attr->attr.name,
10829 "keyboard language is set to %s\n", buf);
10830
10831 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
10832
10833 return count;
10834 }
10835 static DEVICE_ATTR_RW(keyboard_lang);
10836
10837 static struct attribute *kbdlang_attributes[] = {
10838 &dev_attr_keyboard_lang.attr,
10839 NULL
10840 };
10841
kbdlang_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10842 static umode_t kbdlang_attr_is_visible(struct kobject *kobj,
10843 struct attribute *attr, int n)
10844 {
10845 return tp_features.kbd_lang ? attr->mode : 0;
10846 }
10847
10848 static const struct attribute_group kbdlang_attr_group = {
10849 .is_visible = kbdlang_attr_is_visible,
10850 .attrs = kbdlang_attributes,
10851 };
10852
tpacpi_kbdlang_init(struct ibm_init_struct * iibm)10853 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
10854 {
10855 int err, output;
10856
10857 err = get_keyboard_lang(&output);
10858 tp_features.kbd_lang = !err;
10859 return err;
10860 }
10861
10862 static struct ibm_struct kbdlang_driver_data = {
10863 .name = "kbdlang",
10864 };
10865
10866 /*************************************************************************
10867 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
10868 * and WLAN feature.
10869 */
10870 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
10871 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
10872 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
10873 static bool has_antennatype;
10874 static int wwan_antennatype;
10875
dprc_command(int command,int * output)10876 static int dprc_command(int command, int *output)
10877 {
10878 acpi_handle dprc_handle;
10879
10880 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
10881 /* Platform doesn't support DPRC */
10882 return -ENODEV;
10883 }
10884
10885 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
10886 return -EIO;
10887
10888 /*
10889 * METHOD_ERR gets returned on devices where few commands are not supported
10890 * for example command to get WWAN Antenna type command is not supported on
10891 * some devices.
10892 */
10893 if (*output & METHOD_ERR)
10894 return -ENODEV;
10895
10896 return 0;
10897 }
10898
get_wwan_antenna(int * wwan_antennatype)10899 static int get_wwan_antenna(int *wwan_antennatype)
10900 {
10901 int output, err;
10902
10903 /* Get current Antenna type */
10904 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
10905 if (err)
10906 return err;
10907
10908 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
10909 *wwan_antennatype = 1;
10910 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
10911 *wwan_antennatype = 2;
10912 else
10913 return -ENODEV;
10914
10915 return 0;
10916 }
10917
10918 /* sysfs wwan antenna type entry */
wwan_antenna_type_show(struct device * dev,struct device_attribute * attr,char * buf)10919 static ssize_t wwan_antenna_type_show(struct device *dev,
10920 struct device_attribute *attr,
10921 char *buf)
10922 {
10923 switch (wwan_antennatype) {
10924 case 1:
10925 return sysfs_emit(buf, "type a\n");
10926 case 2:
10927 return sysfs_emit(buf, "type b\n");
10928 default:
10929 return -ENODATA;
10930 }
10931 }
10932 static DEVICE_ATTR_RO(wwan_antenna_type);
10933
10934 static struct attribute *dprc_attributes[] = {
10935 &dev_attr_wwan_antenna_type.attr,
10936 NULL
10937 };
10938
dprc_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10939 static umode_t dprc_attr_is_visible(struct kobject *kobj,
10940 struct attribute *attr, int n)
10941 {
10942 return has_antennatype ? attr->mode : 0;
10943 }
10944
10945 static const struct attribute_group dprc_attr_group = {
10946 .is_visible = dprc_attr_is_visible,
10947 .attrs = dprc_attributes,
10948 };
10949
tpacpi_dprc_init(struct ibm_init_struct * iibm)10950 static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
10951 {
10952 int err;
10953
10954 err = get_wwan_antenna(&wwan_antennatype);
10955 if (err)
10956 return err;
10957
10958 has_antennatype = true;
10959 return 0;
10960 }
10961
10962 static struct ibm_struct dprc_driver_data = {
10963 .name = "dprc",
10964 };
10965
10966 /*
10967 * Auxmac
10968 *
10969 * This auxiliary mac address is enabled in the bios through the
10970 * MAC Address Pass-through feature. In most cases, there are three
10971 * possibilities: Internal Mac, Second Mac, and disabled.
10972 *
10973 */
10974
10975 #define AUXMAC_LEN 12
10976 #define AUXMAC_START 9
10977 #define AUXMAC_STRLEN 22
10978 #define AUXMAC_BEGIN_MARKER 8
10979 #define AUXMAC_END_MARKER 21
10980
10981 static char auxmac[AUXMAC_LEN + 1];
10982
auxmac_init(struct ibm_init_struct * iibm)10983 static int auxmac_init(struct ibm_init_struct *iibm)
10984 {
10985 acpi_status status;
10986 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
10987 union acpi_object *obj;
10988
10989 status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer);
10990
10991 if (ACPI_FAILURE(status))
10992 return -ENODEV;
10993
10994 obj = buffer.pointer;
10995
10996 if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) {
10997 pr_info("Invalid buffer for MAC address pass-through.\n");
10998 goto auxmacinvalid;
10999 }
11000
11001 if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' ||
11002 obj->string.pointer[AUXMAC_END_MARKER] != '#') {
11003 pr_info("Invalid header for MAC address pass-through.\n");
11004 goto auxmacinvalid;
11005 }
11006
11007 if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0)
11008 strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac));
11009 else
11010 strscpy(auxmac, "disabled", sizeof(auxmac));
11011
11012 free:
11013 kfree(obj);
11014 return 0;
11015
11016 auxmacinvalid:
11017 strscpy(auxmac, "unavailable", sizeof(auxmac));
11018 goto free;
11019 }
11020
11021 static struct ibm_struct auxmac_data = {
11022 .name = "auxmac",
11023 };
11024
11025 static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac);
11026
auxmac_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)11027 static umode_t auxmac_attr_is_visible(struct kobject *kobj,
11028 struct attribute *attr, int n)
11029 {
11030 return auxmac[0] == 0 ? 0 : attr->mode;
11031 }
11032
11033 static struct attribute *auxmac_attributes[] = {
11034 &dev_attr_auxmac.attr.attr,
11035 NULL
11036 };
11037
11038 static const struct attribute_group auxmac_attr_group = {
11039 .is_visible = auxmac_attr_is_visible,
11040 .attrs = auxmac_attributes,
11041 };
11042
11043 /* --------------------------------------------------------------------- */
11044
11045 static struct attribute *tpacpi_driver_attributes[] = {
11046 &driver_attr_debug_level.attr,
11047 &driver_attr_version.attr,
11048 &driver_attr_interface_version.attr,
11049 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
11050 &driver_attr_wlsw_emulstate.attr,
11051 &driver_attr_bluetooth_emulstate.attr,
11052 &driver_attr_wwan_emulstate.attr,
11053 &driver_attr_uwb_emulstate.attr,
11054 #endif
11055 NULL
11056 };
11057
11058 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
tpacpi_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)11059 static umode_t tpacpi_attr_is_visible(struct kobject *kobj,
11060 struct attribute *attr, int n)
11061 {
11062 if (attr == &driver_attr_wlsw_emulstate.attr) {
11063 if (!dbg_wlswemul)
11064 return 0;
11065 } else if (attr == &driver_attr_bluetooth_emulstate.attr) {
11066 if (!dbg_bluetoothemul)
11067 return 0;
11068 } else if (attr == &driver_attr_wwan_emulstate.attr) {
11069 if (!dbg_wwanemul)
11070 return 0;
11071 } else if (attr == &driver_attr_uwb_emulstate.attr) {
11072 if (!dbg_uwbemul)
11073 return 0;
11074 }
11075
11076 return attr->mode;
11077 }
11078 #endif
11079
11080 static const struct attribute_group tpacpi_driver_attr_group = {
11081 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
11082 .is_visible = tpacpi_attr_is_visible,
11083 #endif
11084 .attrs = tpacpi_driver_attributes,
11085 };
11086
11087 static const struct attribute_group *tpacpi_driver_groups[] = {
11088 &tpacpi_driver_attr_group,
11089 NULL,
11090 };
11091
11092 static const struct attribute_group *tpacpi_groups[] = {
11093 &adaptive_kbd_attr_group,
11094 &hotkey_attr_group,
11095 &bluetooth_attr_group,
11096 &wan_attr_group,
11097 &cmos_attr_group,
11098 &proxsensor_attr_group,
11099 &kbdlang_attr_group,
11100 &dprc_attr_group,
11101 &auxmac_attr_group,
11102 NULL,
11103 };
11104
11105 static const struct attribute_group *tpacpi_hwmon_groups[] = {
11106 &thermal_attr_group,
11107 &temp_label_attr_group,
11108 &fan_attr_group,
11109 NULL,
11110 };
11111
11112 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = {
11113 &fan_driver_attr_group,
11114 NULL,
11115 };
11116
11117 /****************************************************************************
11118 ****************************************************************************
11119 *
11120 * Platform drivers
11121 *
11122 ****************************************************************************
11123 ****************************************************************************/
11124
11125 static struct platform_driver tpacpi_pdriver = {
11126 .driver = {
11127 .name = TPACPI_DRVR_NAME,
11128 .pm = &tpacpi_pm,
11129 .groups = tpacpi_driver_groups,
11130 .dev_groups = tpacpi_groups,
11131 },
11132 .shutdown = tpacpi_shutdown_handler,
11133 };
11134
11135 static struct platform_driver tpacpi_hwmon_pdriver = {
11136 .driver = {
11137 .name = TPACPI_HWMON_DRVR_NAME,
11138 .groups = tpacpi_hwmon_driver_groups,
11139 },
11140 };
11141
11142 /****************************************************************************
11143 ****************************************************************************
11144 *
11145 * Infrastructure
11146 *
11147 ****************************************************************************
11148 ****************************************************************************/
11149
11150 /*
11151 * HKEY event callout for other subdrivers go here
11152 * (yes, it is ugly, but it is quick, safe, and gets the job done
11153 */
tpacpi_driver_event(const unsigned int hkey_event)11154 static bool tpacpi_driver_event(const unsigned int hkey_event)
11155 {
11156 switch (hkey_event) {
11157 case TP_HKEY_EV_BRGHT_UP:
11158 case TP_HKEY_EV_BRGHT_DOWN:
11159 if (ibm_backlight_device)
11160 tpacpi_brightness_notify_change();
11161 /*
11162 * Key press events are suppressed by default hotkey_user_mask
11163 * and should still be reported if explicitly requested.
11164 */
11165 return false;
11166 case TP_HKEY_EV_VOL_UP:
11167 case TP_HKEY_EV_VOL_DOWN:
11168 case TP_HKEY_EV_VOL_MUTE:
11169 if (alsa_card)
11170 volume_alsa_notify_change();
11171
11172 /* Key events are suppressed by default hotkey_user_mask */
11173 return false;
11174 case TP_HKEY_EV_KBD_LIGHT:
11175 if (tp_features.kbdlight) {
11176 enum led_brightness brightness;
11177
11178 mutex_lock(&kbdlight_mutex);
11179
11180 /*
11181 * Check the brightness actually changed, setting the brightness
11182 * through kbdlight_set_level() also triggers this event.
11183 */
11184 brightness = kbdlight_sysfs_get(NULL);
11185 if (kbdlight_brightness != brightness) {
11186 kbdlight_brightness = brightness;
11187 led_classdev_notify_brightness_hw_changed(
11188 &tpacpi_led_kbdlight.led_classdev, brightness);
11189 }
11190
11191 mutex_unlock(&kbdlight_mutex);
11192 }
11193 /* Key events are suppressed by default hotkey_user_mask */
11194 return false;
11195 case TP_HKEY_EV_DFR_CHANGE_ROW:
11196 adaptive_keyboard_change_row();
11197 return true;
11198 case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW:
11199 adaptive_keyboard_s_quickview_row();
11200 return true;
11201 case TP_HKEY_EV_THM_CSM_COMPLETED:
11202 lapsensor_refresh();
11203 /* If we are already accessing DYTC then skip dytc update */
11204 if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
11205 dytc_profile_refresh();
11206
11207 return true;
11208 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
11209 if (lcdshadow_dev) {
11210 enum drm_privacy_screen_status old_hw_state;
11211 bool changed;
11212
11213 mutex_lock(&lcdshadow_dev->lock);
11214 old_hw_state = lcdshadow_dev->hw_state;
11215 lcdshadow_get_hw_state(lcdshadow_dev);
11216 changed = lcdshadow_dev->hw_state != old_hw_state;
11217 mutex_unlock(&lcdshadow_dev->lock);
11218
11219 if (changed)
11220 drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
11221 }
11222 return true;
11223 case TP_HKEY_EV_AMT_TOGGLE:
11224 /* If we're enabling AMT we need to force balanced mode */
11225 if (!dytc_amt_active)
11226 /* This will also set AMT mode enabled */
11227 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
11228 else
11229 dytc_control_amt(!dytc_amt_active);
11230
11231 return true;
11232 case TP_HKEY_EV_DOUBLETAP_TOGGLE:
11233 tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap;
11234 return true;
11235 case TP_HKEY_EV_PROFILE_TOGGLE:
11236 case TP_HKEY_EV_PROFILE_TOGGLE2:
11237 platform_profile_cycle();
11238 return true;
11239 }
11240
11241 return false;
11242 }
11243
11244 /* --------------------------------------------------------------------- */
11245
11246 /* /proc support */
11247 static struct proc_dir_entry *proc_dir;
11248
11249 /*
11250 * Module and infrastructure proble, init and exit handling
11251 */
11252
11253 static bool force_load;
11254
11255 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
str_supported(int is_supported)11256 static const char * __init str_supported(int is_supported)
11257 {
11258 static char text_unsupported[] __initdata = "not supported";
11259
11260 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
11261 }
11262 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
11263
ibm_exit(struct ibm_struct * ibm)11264 static void ibm_exit(struct ibm_struct *ibm)
11265 {
11266 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
11267
11268 list_del_init(&ibm->all_drivers);
11269
11270 if (ibm->flags.acpi_notify_installed) {
11271 dbg_printk(TPACPI_DBG_EXIT,
11272 "%s: acpi_remove_notify_handler\n", ibm->name);
11273 BUG_ON(!ibm->acpi);
11274 acpi_remove_notify_handler(*ibm->acpi->handle,
11275 ibm->acpi->type,
11276 dispatch_acpi_notify);
11277 ibm->flags.acpi_notify_installed = 0;
11278 }
11279
11280 if (ibm->flags.proc_created) {
11281 dbg_printk(TPACPI_DBG_EXIT,
11282 "%s: remove_proc_entry\n", ibm->name);
11283 remove_proc_entry(ibm->name, proc_dir);
11284 ibm->flags.proc_created = 0;
11285 }
11286
11287 if (ibm->flags.acpi_driver_registered) {
11288 dbg_printk(TPACPI_DBG_EXIT,
11289 "%s: acpi_bus_unregister_driver\n", ibm->name);
11290 BUG_ON(!ibm->acpi);
11291 acpi_bus_unregister_driver(ibm->acpi->driver);
11292 kfree(ibm->acpi->driver);
11293 ibm->acpi->driver = NULL;
11294 ibm->flags.acpi_driver_registered = 0;
11295 }
11296
11297 if (ibm->flags.init_called && ibm->exit) {
11298 ibm->exit();
11299 ibm->flags.init_called = 0;
11300 }
11301
11302 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
11303 }
11304
ibm_init(struct ibm_init_struct * iibm)11305 static int __init ibm_init(struct ibm_init_struct *iibm)
11306 {
11307 int ret;
11308 struct ibm_struct *ibm = iibm->data;
11309 struct proc_dir_entry *entry;
11310
11311 BUG_ON(ibm == NULL);
11312
11313 INIT_LIST_HEAD(&ibm->all_drivers);
11314
11315 if (ibm->flags.experimental && !experimental)
11316 return 0;
11317
11318 dbg_printk(TPACPI_DBG_INIT,
11319 "probing for %s\n", ibm->name);
11320
11321 if (iibm->init) {
11322 ret = iibm->init(iibm);
11323 if (ret > 0 || ret == -ENODEV)
11324 return 0; /* subdriver functionality not available */
11325 if (ret)
11326 return ret;
11327
11328 ibm->flags.init_called = 1;
11329 }
11330
11331 if (ibm->acpi) {
11332 if (ibm->acpi->hid) {
11333 ret = register_tpacpi_subdriver(ibm);
11334 if (ret)
11335 goto err_out;
11336 }
11337
11338 if (ibm->acpi->notify) {
11339 ret = setup_acpi_notify(ibm);
11340 if (ret == -ENODEV) {
11341 pr_notice("disabling subdriver %s\n",
11342 ibm->name);
11343 ret = 0;
11344 goto err_out;
11345 }
11346 if (ret < 0)
11347 goto err_out;
11348 }
11349 }
11350
11351 dbg_printk(TPACPI_DBG_INIT,
11352 "%s installed\n", ibm->name);
11353
11354 if (ibm->read) {
11355 umode_t mode = iibm->base_procfs_mode;
11356
11357 if (!mode)
11358 mode = S_IRUGO;
11359 if (ibm->write)
11360 mode |= S_IWUSR;
11361 entry = proc_create_data(ibm->name, mode, proc_dir,
11362 &dispatch_proc_ops, ibm);
11363 if (!entry) {
11364 pr_err("unable to create proc entry %s\n", ibm->name);
11365 ret = -ENODEV;
11366 goto err_out;
11367 }
11368 ibm->flags.proc_created = 1;
11369 }
11370
11371 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
11372
11373 return 0;
11374
11375 err_out:
11376 dbg_printk(TPACPI_DBG_INIT,
11377 "%s: at error exit path with result %d\n",
11378 ibm->name, ret);
11379
11380 ibm_exit(ibm);
11381 return (ret < 0) ? ret : 0;
11382 }
11383
11384 /* Probing */
11385
tpacpi_parse_fw_id(const char * const s,u32 * model,u16 * release)11386 static char __init tpacpi_parse_fw_id(const char * const s,
11387 u32 *model, u16 *release)
11388 {
11389 int i;
11390
11391 if (!s || strlen(s) < 8)
11392 goto invalid;
11393
11394 for (i = 0; i < 8; i++)
11395 if (!((s[i] >= '0' && s[i] <= '9') ||
11396 (s[i] >= 'A' && s[i] <= 'Z')))
11397 goto invalid;
11398
11399 /*
11400 * Most models: xxyTkkWW (#.##c)
11401 * Ancient 570/600 and -SL lacks (#.##c)
11402 */
11403 if (s[3] == 'T' || s[3] == 'N') {
11404 *model = TPID(s[0], s[1]);
11405 *release = TPVER(s[4], s[5]);
11406 return s[2];
11407
11408 /* New models: xxxyTkkW (#.##c); T550 and some others */
11409 } else if (s[4] == 'T' || s[4] == 'N') {
11410 *model = TPID3(s[0], s[1], s[2]);
11411 *release = TPVER(s[5], s[6]);
11412 return s[3];
11413 }
11414
11415 invalid:
11416 return '\0';
11417 }
11418
11419 #define EC_FW_STRING_LEN 18
11420
find_new_ec_fwstr(const struct dmi_header * dm,void * private)11421 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
11422 {
11423 char *ec_fw_string = (char *) private;
11424 const char *dmi_data = (const char *)dm;
11425 /*
11426 * ThinkPad Embedded Controller Program Table on newer models
11427 *
11428 * Offset | Name | Width | Description
11429 * ----------------------------------------------------
11430 * 0x00 | Type | BYTE | 0x8C
11431 * 0x01 | Length | BYTE |
11432 * 0x02 | Handle | WORD | Varies
11433 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
11434 * 0x0A | OEM struct offset | BYTE | 0x0B
11435 * 0x0B | OEM struct number | BYTE | 0x07, for this structure
11436 * 0x0C | OEM struct revision | BYTE | 0x01, for this format
11437 * 0x0D | ECP version ID | STR ID |
11438 * 0x0E | ECP release date | STR ID |
11439 */
11440
11441 /* Return if data structure not match */
11442 if (dm->type != 140 || dm->length < 0x0F ||
11443 memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
11444 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
11445 dmi_data[0x0C] != 0x01)
11446 return;
11447
11448 /* fwstr is the first 8byte string */
11449 BUILD_BUG_ON(EC_FW_STRING_LEN <= 8);
11450 memcpy(ec_fw_string, dmi_data + 0x0F, 8);
11451 }
11452
11453 /* returns 0 - probe ok, or < 0 - probe error.
11454 * Probe ok doesn't mean thinkpad found.
11455 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
get_thinkpad_model_data(struct thinkpad_id_data * tp)11456 static int __must_check __init get_thinkpad_model_data(
11457 struct thinkpad_id_data *tp)
11458 {
11459 const struct dmi_device *dev = NULL;
11460 char ec_fw_string[EC_FW_STRING_LEN] = {0};
11461 char const *s;
11462 char t;
11463
11464 if (!tp)
11465 return -EINVAL;
11466
11467 memset(tp, 0, sizeof(*tp));
11468
11469 if (dmi_name_in_vendors("IBM"))
11470 tp->vendor = PCI_VENDOR_ID_IBM;
11471 else if (dmi_name_in_vendors("LENOVO"))
11472 tp->vendor = PCI_VENDOR_ID_LENOVO;
11473 else
11474 return 0;
11475
11476 s = dmi_get_system_info(DMI_BIOS_VERSION);
11477 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
11478 if (s && !tp->bios_version_str)
11479 return -ENOMEM;
11480
11481 /* Really ancient ThinkPad 240X will fail this, which is fine */
11482 t = tpacpi_parse_fw_id(tp->bios_version_str,
11483 &tp->bios_model, &tp->bios_release);
11484 if (t != 'E' && t != 'C')
11485 return 0;
11486
11487 /*
11488 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
11489 * X32 or newer, all Z series; Some models must have an
11490 * up-to-date BIOS or they will not be detected.
11491 *
11492 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
11493 */
11494 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
11495 if (sscanf(dev->name,
11496 "IBM ThinkPad Embedded Controller -[%17c",
11497 ec_fw_string) == 1) {
11498 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
11499 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
11500 break;
11501 }
11502 }
11503
11504 /* Newer ThinkPads have different EC program info table */
11505 if (!ec_fw_string[0])
11506 dmi_walk(find_new_ec_fwstr, &ec_fw_string);
11507
11508 if (ec_fw_string[0]) {
11509 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
11510 if (!tp->ec_version_str)
11511 return -ENOMEM;
11512
11513 t = tpacpi_parse_fw_id(ec_fw_string,
11514 &tp->ec_model, &tp->ec_release);
11515 if (t != 'H') {
11516 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
11517 ec_fw_string);
11518 pr_notice("please report this to %s\n", TPACPI_MAIL);
11519 }
11520 }
11521
11522 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
11523 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
11524 tp->model_str = kstrdup(s, GFP_KERNEL);
11525 if (!tp->model_str)
11526 return -ENOMEM;
11527 } else {
11528 s = dmi_get_system_info(DMI_BIOS_VENDOR);
11529 if (s && !(strncasecmp(s, "Lenovo", 6))) {
11530 tp->model_str = kstrdup(s, GFP_KERNEL);
11531 if (!tp->model_str)
11532 return -ENOMEM;
11533 }
11534 }
11535
11536 s = dmi_get_system_info(DMI_PRODUCT_NAME);
11537 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
11538 if (s && !tp->nummodel_str)
11539 return -ENOMEM;
11540
11541 return 0;
11542 }
11543
probe_for_thinkpad(void)11544 static int __init probe_for_thinkpad(void)
11545 {
11546 int is_thinkpad;
11547
11548 if (acpi_disabled)
11549 return -ENODEV;
11550
11551 /* It would be dangerous to run the driver in this case */
11552 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
11553 return -ENODEV;
11554
11555 /*
11556 * Non-ancient models have better DMI tagging, but very old models
11557 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
11558 */
11559 is_thinkpad = (thinkpad_id.model_str != NULL) ||
11560 (thinkpad_id.ec_model != 0) ||
11561 tpacpi_is_fw_known();
11562
11563 /* The EC handler is required */
11564 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
11565 if (!ec_handle) {
11566 if (is_thinkpad)
11567 pr_err("Not yet supported ThinkPad detected!\n");
11568 return -ENODEV;
11569 }
11570
11571 if (!is_thinkpad && !force_load)
11572 return -ENODEV;
11573
11574 return 0;
11575 }
11576
thinkpad_acpi_init_banner(void)11577 static void __init thinkpad_acpi_init_banner(void)
11578 {
11579 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
11580 pr_info("%s\n", TPACPI_URL);
11581
11582 pr_info("ThinkPad BIOS %s, EC %s\n",
11583 (thinkpad_id.bios_version_str) ?
11584 thinkpad_id.bios_version_str : "unknown",
11585 (thinkpad_id.ec_version_str) ?
11586 thinkpad_id.ec_version_str : "unknown");
11587
11588 BUG_ON(!thinkpad_id.vendor);
11589
11590 if (thinkpad_id.model_str)
11591 pr_info("%s %s, model %s\n",
11592 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
11593 "IBM" : ((thinkpad_id.vendor ==
11594 PCI_VENDOR_ID_LENOVO) ?
11595 "Lenovo" : "Unknown vendor"),
11596 thinkpad_id.model_str,
11597 (thinkpad_id.nummodel_str) ?
11598 thinkpad_id.nummodel_str : "unknown");
11599 }
11600
11601 /* Module init, exit, parameters */
11602
11603 static struct ibm_init_struct ibms_init[] __initdata = {
11604 {
11605 .data = &thinkpad_acpi_driver_data,
11606 },
11607 {
11608 .init = hotkey_init,
11609 .data = &hotkey_driver_data,
11610 },
11611 {
11612 .init = bluetooth_init,
11613 .data = &bluetooth_driver_data,
11614 },
11615 {
11616 .init = wan_init,
11617 .data = &wan_driver_data,
11618 },
11619 {
11620 .init = uwb_init,
11621 .data = &uwb_driver_data,
11622 },
11623 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
11624 {
11625 .init = video_init,
11626 .base_procfs_mode = S_IRUSR,
11627 .data = &video_driver_data,
11628 },
11629 #endif
11630 {
11631 .init = kbdlight_init,
11632 .data = &kbdlight_driver_data,
11633 },
11634 {
11635 .init = light_init,
11636 .data = &light_driver_data,
11637 },
11638 {
11639 .init = cmos_init,
11640 .data = &cmos_driver_data,
11641 },
11642 {
11643 .init = led_init,
11644 .data = &led_driver_data,
11645 },
11646 {
11647 .init = beep_init,
11648 .data = &beep_driver_data,
11649 },
11650 {
11651 .init = thermal_init,
11652 .data = &thermal_driver_data,
11653 },
11654 {
11655 .init = brightness_init,
11656 .data = &brightness_driver_data,
11657 },
11658 {
11659 .init = volume_init,
11660 .data = &volume_driver_data,
11661 },
11662 {
11663 .init = fan_init,
11664 .data = &fan_driver_data,
11665 },
11666 {
11667 .init = mute_led_init,
11668 .data = &mute_led_driver_data,
11669 },
11670 {
11671 .init = tpacpi_battery_init,
11672 .data = &battery_driver_data,
11673 },
11674 {
11675 .init = tpacpi_lcdshadow_init,
11676 .data = &lcdshadow_driver_data,
11677 },
11678 {
11679 .init = tpacpi_proxsensor_init,
11680 .data = &proxsensor_driver_data,
11681 },
11682 {
11683 .init = tpacpi_dytc_profile_init,
11684 .data = &dytc_profile_driver_data,
11685 },
11686 {
11687 .init = tpacpi_kbdlang_init,
11688 .data = &kbdlang_driver_data,
11689 },
11690 {
11691 .init = tpacpi_dprc_init,
11692 .data = &dprc_driver_data,
11693 },
11694 {
11695 .init = auxmac_init,
11696 .data = &auxmac_data,
11697 },
11698 };
11699
set_ibm_param(const char * val,const struct kernel_param * kp)11700 static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
11701 {
11702 unsigned int i;
11703 struct ibm_struct *ibm;
11704
11705 if (!kp || !kp->name || !val)
11706 return -EINVAL;
11707
11708 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11709 ibm = ibms_init[i].data;
11710 if (!ibm || !ibm->name)
11711 continue;
11712
11713 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
11714 if (strlen(val) > sizeof(ibms_init[i].param) - 1)
11715 return -ENOSPC;
11716 strscpy(ibms_init[i].param, val);
11717 return 0;
11718 }
11719 }
11720
11721 return -EINVAL;
11722 }
11723
11724 module_param(experimental, int, 0444);
11725 MODULE_PARM_DESC(experimental,
11726 "Enables experimental features when non-zero");
11727
11728 module_param_named(debug, dbg_level, uint, 0);
11729 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
11730
11731 module_param(force_load, bool, 0444);
11732 MODULE_PARM_DESC(force_load,
11733 "Attempts to load the driver even on a mis-identified ThinkPad when true");
11734
11735 module_param_named(fan_control, fan_control_allowed, bool, 0444);
11736 MODULE_PARM_DESC(fan_control,
11737 "Enables setting fan parameters features when true");
11738
11739 module_param_named(brightness_mode, brightness_mode, uint, 0444);
11740 MODULE_PARM_DESC(brightness_mode,
11741 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
11742
11743 module_param(brightness_enable, uint, 0444);
11744 MODULE_PARM_DESC(brightness_enable,
11745 "Enables backlight control when 1, disables when 0");
11746
11747 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
11748 module_param_named(volume_mode, volume_mode, uint, 0444);
11749 MODULE_PARM_DESC(volume_mode,
11750 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
11751
11752 module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
11753 MODULE_PARM_DESC(volume_capabilities,
11754 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only");
11755
11756 module_param_named(volume_control, volume_control_allowed, bool, 0444);
11757 MODULE_PARM_DESC(volume_control,
11758 "Enables software override for the console audio control when true");
11759
11760 module_param_named(software_mute, software_mute_requested, bool, 0444);
11761 MODULE_PARM_DESC(software_mute,
11762 "Request full software mute control");
11763
11764 /* ALSA module API parameters */
11765 module_param_named(index, alsa_index, int, 0444);
11766 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
11767 module_param_named(id, alsa_id, charp, 0444);
11768 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
11769 module_param_named(enable, alsa_enable, bool, 0444);
11770 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
11771 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
11772
11773 /* The module parameter can't be read back, that's why 0 is used here */
11774 #define TPACPI_PARAM(feature) \
11775 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
11776 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
11777
11778 TPACPI_PARAM(hotkey);
11779 TPACPI_PARAM(bluetooth);
11780 TPACPI_PARAM(video);
11781 TPACPI_PARAM(light);
11782 TPACPI_PARAM(cmos);
11783 TPACPI_PARAM(led);
11784 TPACPI_PARAM(beep);
11785 TPACPI_PARAM(brightness);
11786 TPACPI_PARAM(volume);
11787 TPACPI_PARAM(fan);
11788
11789 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
11790 module_param(dbg_wlswemul, uint, 0444);
11791 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
11792 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
11793 MODULE_PARM_DESC(wlsw_state,
11794 "Initial state of the emulated WLSW switch");
11795
11796 module_param(dbg_bluetoothemul, uint, 0444);
11797 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
11798 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
11799 MODULE_PARM_DESC(bluetooth_state,
11800 "Initial state of the emulated bluetooth switch");
11801
11802 module_param(dbg_wwanemul, uint, 0444);
11803 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
11804 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
11805 MODULE_PARM_DESC(wwan_state,
11806 "Initial state of the emulated WWAN switch");
11807
11808 module_param(dbg_uwbemul, uint, 0444);
11809 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
11810 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
11811 MODULE_PARM_DESC(uwb_state,
11812 "Initial state of the emulated UWB switch");
11813 #endif
11814
11815 module_param(profile_force, int, 0444);
11816 MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC");
11817
thinkpad_acpi_module_exit(void)11818 static void thinkpad_acpi_module_exit(void)
11819 {
11820 struct ibm_struct *ibm, *itmp;
11821
11822 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
11823
11824 if (tpacpi_hwmon)
11825 hwmon_device_unregister(tpacpi_hwmon);
11826 if (tp_features.sensors_pdrv_registered)
11827 platform_driver_unregister(&tpacpi_hwmon_pdriver);
11828 if (tp_features.platform_drv_registered)
11829 platform_driver_unregister(&tpacpi_pdriver);
11830
11831 list_for_each_entry_safe_reverse(ibm, itmp,
11832 &tpacpi_all_drivers,
11833 all_drivers) {
11834 ibm_exit(ibm);
11835 }
11836
11837 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
11838
11839 if (tpacpi_inputdev) {
11840 if (tp_features.input_device_registered)
11841 input_unregister_device(tpacpi_inputdev);
11842 else
11843 input_free_device(tpacpi_inputdev);
11844 }
11845
11846 if (tpacpi_sensors_pdev)
11847 platform_device_unregister(tpacpi_sensors_pdev);
11848 if (tpacpi_pdev)
11849 platform_device_unregister(tpacpi_pdev);
11850 if (proc_dir)
11851 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
11852 if (tpacpi_wq)
11853 destroy_workqueue(tpacpi_wq);
11854
11855 kfree(thinkpad_id.bios_version_str);
11856 kfree(thinkpad_id.ec_version_str);
11857 kfree(thinkpad_id.model_str);
11858 kfree(thinkpad_id.nummodel_str);
11859 }
11860
11861
thinkpad_acpi_module_init(void)11862 static int __init thinkpad_acpi_module_init(void)
11863 {
11864 const struct dmi_system_id *dmi_id;
11865 int ret, i;
11866 acpi_object_type obj_type;
11867
11868 tpacpi_lifecycle = TPACPI_LIFE_INIT;
11869
11870 /* Driver-level probe */
11871
11872 ret = get_thinkpad_model_data(&thinkpad_id);
11873 if (ret) {
11874 pr_err("unable to get DMI data: %d\n", ret);
11875 thinkpad_acpi_module_exit();
11876 return ret;
11877 }
11878 ret = probe_for_thinkpad();
11879 if (ret) {
11880 thinkpad_acpi_module_exit();
11881 return ret;
11882 }
11883
11884 /* Driver initialization */
11885
11886 thinkpad_acpi_init_banner();
11887 tpacpi_check_outdated_fw();
11888
11889 TPACPI_ACPIHANDLE_INIT(ecrd);
11890 TPACPI_ACPIHANDLE_INIT(ecwr);
11891
11892 /*
11893 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD
11894 * exists, but it is a register, not a method.
11895 */
11896 if (ecrd_handle) {
11897 acpi_get_type(ecrd_handle, &obj_type);
11898 if (obj_type != ACPI_TYPE_METHOD)
11899 ecrd_handle = NULL;
11900 }
11901 if (ecwr_handle) {
11902 acpi_get_type(ecwr_handle, &obj_type);
11903 if (obj_type != ACPI_TYPE_METHOD)
11904 ecwr_handle = NULL;
11905 }
11906
11907 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
11908 if (!tpacpi_wq) {
11909 thinkpad_acpi_module_exit();
11910 return -ENOMEM;
11911 }
11912
11913 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
11914 if (!proc_dir) {
11915 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
11916 thinkpad_acpi_module_exit();
11917 return -ENODEV;
11918 }
11919
11920 dmi_id = dmi_first_match(fwbug_list);
11921 if (dmi_id)
11922 tp_features.quirks = dmi_id->driver_data;
11923
11924 /* Device initialization */
11925 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE,
11926 NULL, 0);
11927 if (IS_ERR(tpacpi_pdev)) {
11928 ret = PTR_ERR(tpacpi_pdev);
11929 tpacpi_pdev = NULL;
11930 pr_err("unable to register platform device\n");
11931 thinkpad_acpi_module_exit();
11932 return ret;
11933 }
11934 tpacpi_sensors_pdev = platform_device_register_simple(
11935 TPACPI_HWMON_DRVR_NAME,
11936 PLATFORM_DEVID_NONE, NULL, 0);
11937 if (IS_ERR(tpacpi_sensors_pdev)) {
11938 ret = PTR_ERR(tpacpi_sensors_pdev);
11939 tpacpi_sensors_pdev = NULL;
11940 pr_err("unable to register hwmon platform device\n");
11941 thinkpad_acpi_module_exit();
11942 return ret;
11943 }
11944
11945 mutex_init(&tpacpi_inputdev_send_mutex);
11946 tpacpi_inputdev = input_allocate_device();
11947 if (!tpacpi_inputdev) {
11948 thinkpad_acpi_module_exit();
11949 return -ENOMEM;
11950 } else {
11951 /* Prepare input device, but don't register */
11952 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
11953 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
11954 tpacpi_inputdev->id.bustype = BUS_HOST;
11955 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
11956 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
11957 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
11958 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
11959 }
11960
11961 /* Init subdriver dependencies */
11962 tpacpi_detect_brightness_capabilities();
11963
11964 /* Init subdrivers */
11965 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
11966 ret = ibm_init(&ibms_init[i]);
11967 if (ret >= 0 && *ibms_init[i].param)
11968 ret = ibms_init[i].data->write(ibms_init[i].param);
11969 if (ret < 0) {
11970 thinkpad_acpi_module_exit();
11971 return ret;
11972 }
11973 }
11974
11975 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
11976
11977 ret = platform_driver_register(&tpacpi_pdriver);
11978 if (ret) {
11979 pr_err("unable to register main platform driver\n");
11980 thinkpad_acpi_module_exit();
11981 return ret;
11982 }
11983 tp_features.platform_drv_registered = 1;
11984
11985 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
11986 if (ret) {
11987 pr_err("unable to register hwmon platform driver\n");
11988 thinkpad_acpi_module_exit();
11989 return ret;
11990 }
11991 tp_features.sensors_pdrv_registered = 1;
11992
11993 tpacpi_hwmon = hwmon_device_register_with_groups(
11994 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups);
11995 if (IS_ERR(tpacpi_hwmon)) {
11996 ret = PTR_ERR(tpacpi_hwmon);
11997 tpacpi_hwmon = NULL;
11998 pr_err("unable to register hwmon device\n");
11999 thinkpad_acpi_module_exit();
12000 return ret;
12001 }
12002
12003 ret = input_register_device(tpacpi_inputdev);
12004 if (ret < 0) {
12005 pr_err("unable to register input device\n");
12006 thinkpad_acpi_module_exit();
12007 return ret;
12008 } else {
12009 tp_features.input_device_registered = 1;
12010 }
12011
12012 return 0;
12013 }
12014
12015 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
12016
12017 /*
12018 * This will autoload the driver in almost every ThinkPad
12019 * in widespread use.
12020 *
12021 * Only _VERY_ old models, like the 240, 240x and 570 lack
12022 * the HKEY event interface.
12023 */
12024 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
12025
12026 /*
12027 * DMI matching for module autoloading
12028 *
12029 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
12030 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
12031 *
12032 * Only models listed in thinkwiki will be supported, so add yours
12033 * if it is not there yet.
12034 */
12035 #define IBM_BIOS_MODULE_ALIAS(__type) \
12036 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
12037
12038 /* Ancient thinkpad BIOSes have to be identified by
12039 * BIOS type or model number, and there are far less
12040 * BIOS types than model numbers... */
12041 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
12042
12043 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
12044 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
12045 MODULE_DESCRIPTION(TPACPI_DESC);
12046 MODULE_VERSION(TPACPI_VERSION);
12047 MODULE_LICENSE("GPL");
12048
12049 module_init(thinkpad_acpi_module_init);
12050 module_exit(thinkpad_acpi_module_exit);
12051