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