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