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