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_RD_ACPI_FANG: 7753 * ACPI FANG method: returns fan control register 7754 * 7755 * Takes one parameter which is 0x8100 plus the offset to EC memory 7756 * address 0xf500 and returns the byte at this address. 7757 * 7758 * 0xf500: 7759 * When the value is less than 9 automatic mode is enabled 7760 * 0xf502: 7761 * Contains the current fan speed from 0-100% 7762 * 0xf506: 7763 * Bit 7 has to be set in order to enable manual control by 7764 * writing a value >= 9 to 0xf500 7765 * 7766 * TPACPI_FAN_WR_ACPI_FANW: 7767 * ACPI FANW method: sets fan control registers 7768 * 7769 * Takes 0x8100 plus the offset to EC memory address 0xf500 and the 7770 * value to be written there as parameters. 7771 * 7772 * see TPACPI_FAN_RD_ACPI_FANG 7773 * 7774 * TPACPI_FAN_WR_TPEC: 7775 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7776 * Supported on almost all ThinkPads 7777 * 7778 * Fan speed changes of any sort (including those caused by the 7779 * disengaged mode) are usually done slowly by the firmware as the 7780 * maximum amount of fan duty cycle change per second seems to be 7781 * limited. 7782 * 7783 * Reading is not available if GFAN exists. 7784 * Writing is not available if SFAN exists. 7785 * 7786 * Bits 7787 * 7 automatic mode engaged; 7788 * (default operation mode of the ThinkPad) 7789 * fan level is ignored in this mode. 7790 * 6 full speed mode (takes precedence over bit 7); 7791 * not available on all thinkpads. May disable 7792 * the tachometer while the fan controller ramps up 7793 * the speed (which can take up to a few *minutes*). 7794 * Speeds up fan to 100% duty-cycle, which is far above 7795 * the standard RPM levels. It is not impossible that 7796 * it could cause hardware damage. 7797 * 5-3 unused in some models. Extra bits for fan level 7798 * in others, but still useless as all values above 7799 * 7 map to the same speed as level 7 in these models. 7800 * 2-0 fan level (0..7 usually) 7801 * 0x00 = stop 7802 * 0x07 = max (set when temperatures critical) 7803 * Some ThinkPads may have other levels, see 7804 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7805 * 7806 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7807 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7808 * does so, its initial value is meaningless (0x07). 7809 * 7810 * For firmware bugs, refer to: 7811 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7812 * 7813 * ---- 7814 * 7815 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7816 * Main fan tachometer reading (in RPM) 7817 * 7818 * This register is present on all ThinkPads with a new-style EC, and 7819 * it is known not to be present on the A21m/e, and T22, as there is 7820 * something else in offset 0x84 according to the ACPI DSDT. Other 7821 * ThinkPads from this same time period (and earlier) probably lack the 7822 * tachometer as well. 7823 * 7824 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7825 * was never fixed by IBM to report the EC firmware version string 7826 * probably support the tachometer (like the early X models), so 7827 * detecting it is quite hard. We need more data to know for sure. 7828 * 7829 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7830 * might result. 7831 * 7832 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7833 * mode. 7834 * 7835 * For firmware bugs, refer to: 7836 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7837 * 7838 * ---- 7839 * 7840 * ThinkPad EC register 0x31 bit 0 (only on select models) 7841 * 7842 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7843 * show the speed of the main fan. When bit 0 of EC register 0x31 7844 * is one, the tachometer registers show the speed of the auxiliary 7845 * fan. 7846 * 7847 * Fan control seems to affect both fans, regardless of the state 7848 * of this bit. 7849 * 7850 * So far, only the firmware for the X60/X61 non-tablet versions 7851 * seem to support this (firmware TP-7M). 7852 * 7853 * TPACPI_FAN_WR_ACPI_FANS: 7854 * ThinkPad X31, X40, X41. Not available in the X60. 7855 * 7856 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7857 * high speed. ACPI DSDT seems to map these three speeds to levels 7858 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7859 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7860 * 7861 * The speeds are stored on handles 7862 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7863 * 7864 * There are three default speed sets, accessible as handles: 7865 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7866 * 7867 * ACPI DSDT switches which set is in use depending on various 7868 * factors. 7869 * 7870 * TPACPI_FAN_WR_TPEC is also available and should be used to 7871 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7872 * but the ACPI tables just mention level 7. 7873 * 7874 * TPACPI_FAN_RD_TPEC_NS: 7875 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) 7876 * that are using non-standard EC locations for reporting fan speeds. 7877 * Currently these platforms only provide fan rpm reporting. 7878 * 7879 */ 7880 7881 #define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ 7882 7883 #define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ 7884 #define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ 7885 7886 enum { /* Fan control constants */ 7887 fan_status_offset = 0x2f, /* EC register 0x2f */ 7888 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7889 * 0x84 must be read before 0x85 */ 7890 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7891 bit 0 selects which fan is active */ 7892 7893 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ 7894 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ 7895 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ 7896 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ 7897 7898 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7899 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7900 7901 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7902 }; 7903 7904 enum fan_status_access_mode { 7905 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7906 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7907 TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */ 7908 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7909 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ 7910 }; 7911 7912 enum fan_control_access_mode { 7913 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7914 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7915 TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */ 7916 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7917 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7918 }; 7919 7920 enum fan_control_commands { 7921 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 7922 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 7923 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 7924 * and also watchdog cmd */ 7925 }; 7926 7927 static bool fan_control_allowed; 7928 7929 static enum fan_status_access_mode fan_status_access_mode; 7930 static enum fan_control_access_mode fan_control_access_mode; 7931 static enum fan_control_commands fan_control_commands; 7932 7933 static u8 fan_control_initial_status; 7934 static u8 fan_control_desired_level; 7935 static u8 fan_control_resume_level; 7936 static int fan_watchdog_maxinterval; 7937 7938 static bool fan_with_ns_addr; 7939 static bool ecfw_with_fan_dec_rpm; 7940 7941 static struct mutex fan_mutex; 7942 7943 static void fan_watchdog_fire(struct work_struct *ignored); 7944 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 7945 7946 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 7947 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 7948 "\\FSPD", /* 600e/x, 770e, 770x */ 7949 ); /* all others */ 7950 TPACPI_HANDLE(fang, ec, "FANG", /* E531 */ 7951 ); /* all others */ 7952 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 7953 "JFNS", /* 770x-JL */ 7954 ); /* all others */ 7955 TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */ 7956 ); /* all others */ 7957 7958 /* 7959 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 7960 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 7961 * be in auto mode (0x80). 7962 * 7963 * This is corrected by any write to HFSP either by the driver, or 7964 * by the firmware. 7965 * 7966 * We assume 0x07 really means auto mode while this quirk is active, 7967 * as this is far more likely than the ThinkPad being in level 7, 7968 * which is only used by the firmware during thermal emergencies. 7969 * 7970 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 7971 * TP-70 (T43, R52), which are known to be buggy. 7972 */ 7973 7974 static void fan_quirk1_setup(void) 7975 { 7976 if (fan_control_initial_status == 0x07) { 7977 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 7978 tp_features.fan_ctrl_status_undef = 1; 7979 } 7980 } 7981 7982 static void fan_quirk1_handle(u8 *fan_status) 7983 { 7984 if (unlikely(tp_features.fan_ctrl_status_undef)) { 7985 if (*fan_status != fan_control_initial_status) { 7986 /* something changed the HFSP regisnter since 7987 * driver init time, so it is not undefined 7988 * anymore */ 7989 tp_features.fan_ctrl_status_undef = 0; 7990 } else { 7991 /* Return most likely status. In fact, it 7992 * might be the only possible status */ 7993 *fan_status = TP_EC_FAN_AUTO; 7994 } 7995 } 7996 } 7997 7998 /* Select main fan on X60/X61, NOOP on others */ 7999 static bool fan_select_fan1(void) 8000 { 8001 if (tp_features.second_fan) { 8002 u8 val; 8003 8004 if (ec_read(fan_select_offset, &val) < 0) 8005 return false; 8006 val &= 0xFEU; 8007 if (ec_write(fan_select_offset, val) < 0) 8008 return false; 8009 } 8010 return true; 8011 } 8012 8013 /* Select secondary fan on X60/X61 */ 8014 static bool fan_select_fan2(void) 8015 { 8016 u8 val; 8017 8018 if (!tp_features.second_fan) 8019 return false; 8020 8021 if (ec_read(fan_select_offset, &val) < 0) 8022 return false; 8023 val |= 0x01U; 8024 if (ec_write(fan_select_offset, val) < 0) 8025 return false; 8026 8027 return true; 8028 } 8029 8030 static void fan_update_desired_level(u8 status) 8031 { 8032 lockdep_assert_held(&fan_mutex); 8033 8034 if ((status & 8035 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8036 if (status > 7) 8037 fan_control_desired_level = 7; 8038 else 8039 fan_control_desired_level = status; 8040 } 8041 } 8042 8043 static int fan_get_status(u8 *status) 8044 { 8045 u8 s; 8046 8047 /* TODO: 8048 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8049 8050 switch (fan_status_access_mode) { 8051 case TPACPI_FAN_RD_ACPI_GFAN: { 8052 /* 570, 600e/x, 770e, 770x */ 8053 int res; 8054 8055 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8056 return -EIO; 8057 8058 if (likely(status)) 8059 *status = res & 0x07; 8060 8061 break; 8062 } 8063 case TPACPI_FAN_RD_ACPI_FANG: { 8064 /* E531 */ 8065 int mode, speed; 8066 8067 if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100))) 8068 return -EIO; 8069 if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102))) 8070 return -EIO; 8071 8072 if (likely(status)) { 8073 *status = speed * 7 / 100; 8074 if (mode < 9) 8075 *status |= TP_EC_FAN_AUTO; 8076 } 8077 8078 break; 8079 } 8080 case TPACPI_FAN_RD_TPEC: 8081 /* all except 570, 600e/x, 770e, 770x */ 8082 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8083 return -EIO; 8084 8085 if (likely(status)) { 8086 *status = s; 8087 fan_quirk1_handle(status); 8088 } 8089 8090 break; 8091 case TPACPI_FAN_RD_TPEC_NS: 8092 /* Default mode is AUTO which means controlled by EC */ 8093 if (!acpi_ec_read(fan_status_offset_ns, &s)) 8094 return -EIO; 8095 8096 if (status) 8097 *status = s; 8098 8099 break; 8100 8101 default: 8102 return -ENXIO; 8103 } 8104 8105 return 0; 8106 } 8107 8108 static int fan_get_status_safe(u8 *status) 8109 { 8110 int rc; 8111 u8 s; 8112 8113 if (mutex_lock_killable(&fan_mutex)) 8114 return -ERESTARTSYS; 8115 rc = fan_get_status(&s); 8116 /* NS EC doesn't have register with level settings */ 8117 if (!rc && !fan_with_ns_addr) 8118 fan_update_desired_level(s); 8119 mutex_unlock(&fan_mutex); 8120 8121 if (rc) 8122 return rc; 8123 if (status) 8124 *status = s; 8125 8126 return 0; 8127 } 8128 8129 static int fan_get_speed(unsigned int *speed) 8130 { 8131 u8 hi, lo; 8132 8133 switch (fan_status_access_mode) { 8134 case TPACPI_FAN_RD_TPEC: 8135 /* all except 570, 600e/x, 770e, 770x */ 8136 if (unlikely(!fan_select_fan1())) 8137 return -EIO; 8138 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8139 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8140 return -EIO; 8141 8142 if (likely(speed)) 8143 *speed = (hi << 8) | lo; 8144 break; 8145 case TPACPI_FAN_RD_TPEC_NS: 8146 if (!acpi_ec_read(fan_rpm_status_ns, &lo)) 8147 return -EIO; 8148 8149 if (speed) 8150 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8151 break; 8152 8153 default: 8154 return -ENXIO; 8155 } 8156 8157 return 0; 8158 } 8159 8160 static int fan2_get_speed(unsigned int *speed) 8161 { 8162 u8 hi, lo, status; 8163 bool rc; 8164 8165 switch (fan_status_access_mode) { 8166 case TPACPI_FAN_RD_TPEC: 8167 /* all except 570, 600e/x, 770e, 770x */ 8168 if (unlikely(!fan_select_fan2())) 8169 return -EIO; 8170 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8171 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8172 fan_select_fan1(); /* play it safe */ 8173 if (rc) 8174 return -EIO; 8175 8176 if (likely(speed)) 8177 *speed = (hi << 8) | lo; 8178 break; 8179 8180 case TPACPI_FAN_RD_TPEC_NS: 8181 rc = !acpi_ec_read(fan2_status_offset_ns, &status); 8182 if (rc) 8183 return -EIO; 8184 if (!(status & FAN_NS_CTRL_STATUS)) { 8185 pr_info("secondary fan control not supported\n"); 8186 return -EIO; 8187 } 8188 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); 8189 if (rc) 8190 return -EIO; 8191 if (speed) 8192 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8193 break; 8194 case TPACPI_FAN_RD_ACPI_FANG: { 8195 /* E531 */ 8196 int speed_tmp; 8197 8198 if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102))) 8199 return -EIO; 8200 8201 if (likely(speed)) 8202 *speed = speed_tmp * 65535 / 100; 8203 break; 8204 } 8205 8206 default: 8207 return -ENXIO; 8208 } 8209 8210 return 0; 8211 } 8212 8213 static int fan_set_level(int level) 8214 { 8215 if (!fan_control_allowed) 8216 return -EPERM; 8217 8218 switch (fan_control_access_mode) { 8219 case TPACPI_FAN_WR_ACPI_SFAN: 8220 if ((level < 0) || (level > 7)) 8221 return -EINVAL; 8222 8223 if (tp_features.second_fan_ctl) { 8224 if (!fan_select_fan2() || 8225 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8226 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8227 tp_features.second_fan_ctl = 0; 8228 } 8229 fan_select_fan1(); 8230 } 8231 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8232 return -EIO; 8233 break; 8234 8235 case TPACPI_FAN_WR_ACPI_FANS: 8236 case TPACPI_FAN_WR_TPEC: 8237 if (!(level & TP_EC_FAN_AUTO) && 8238 !(level & TP_EC_FAN_FULLSPEED) && 8239 ((level < 0) || (level > 7))) 8240 return -EINVAL; 8241 8242 /* safety net should the EC not support AUTO 8243 * or FULLSPEED mode bits and just ignore them */ 8244 if (level & TP_EC_FAN_FULLSPEED) 8245 level |= 7; /* safety min speed 7 */ 8246 else if (level & TP_EC_FAN_AUTO) 8247 level |= 4; /* safety min speed 4 */ 8248 8249 if (tp_features.second_fan_ctl) { 8250 if (!fan_select_fan2() || 8251 !acpi_ec_write(fan_status_offset, level)) { 8252 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8253 tp_features.second_fan_ctl = 0; 8254 } 8255 fan_select_fan1(); 8256 8257 } 8258 if (!acpi_ec_write(fan_status_offset, level)) 8259 return -EIO; 8260 else 8261 tp_features.fan_ctrl_status_undef = 0; 8262 break; 8263 8264 case TPACPI_FAN_WR_ACPI_FANW: 8265 if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7)) 8266 return -EINVAL; 8267 if (level & TP_EC_FAN_FULLSPEED) 8268 return -EINVAL; 8269 8270 if (level & TP_EC_FAN_AUTO) { 8271 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8272 return -EIO; 8273 } 8274 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8275 return -EIO; 8276 } 8277 } else { 8278 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8279 return -EIO; 8280 } 8281 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8282 return -EIO; 8283 } 8284 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) { 8285 return -EIO; 8286 } 8287 } 8288 break; 8289 8290 default: 8291 return -ENXIO; 8292 } 8293 8294 vdbg_printk(TPACPI_DBG_FAN, 8295 "fan control: set fan control register to 0x%02x\n", level); 8296 return 0; 8297 } 8298 8299 static int fan_set_level_safe(int level) 8300 { 8301 int rc; 8302 8303 if (!fan_control_allowed) 8304 return -EPERM; 8305 8306 if (mutex_lock_killable(&fan_mutex)) 8307 return -ERESTARTSYS; 8308 8309 if (level == TPACPI_FAN_LAST_LEVEL) 8310 level = fan_control_desired_level; 8311 8312 rc = fan_set_level(level); 8313 if (!rc) 8314 fan_update_desired_level(level); 8315 8316 mutex_unlock(&fan_mutex); 8317 return rc; 8318 } 8319 8320 static int fan_set_enable(void) 8321 { 8322 u8 s = 0; 8323 int rc; 8324 8325 if (!fan_control_allowed) 8326 return -EPERM; 8327 8328 if (mutex_lock_killable(&fan_mutex)) 8329 return -ERESTARTSYS; 8330 8331 switch (fan_control_access_mode) { 8332 case TPACPI_FAN_WR_ACPI_FANS: 8333 case TPACPI_FAN_WR_TPEC: 8334 rc = fan_get_status(&s); 8335 if (rc) 8336 break; 8337 8338 /* Don't go out of emergency fan mode */ 8339 if (s != 7) { 8340 s &= 0x07; 8341 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8342 } 8343 8344 if (!acpi_ec_write(fan_status_offset, s)) 8345 rc = -EIO; 8346 else { 8347 tp_features.fan_ctrl_status_undef = 0; 8348 rc = 0; 8349 } 8350 break; 8351 8352 case TPACPI_FAN_WR_ACPI_SFAN: 8353 rc = fan_get_status(&s); 8354 if (rc) 8355 break; 8356 8357 s &= 0x07; 8358 8359 /* Set fan to at least level 4 */ 8360 s |= 4; 8361 8362 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8363 rc = -EIO; 8364 else 8365 rc = 0; 8366 break; 8367 8368 case TPACPI_FAN_WR_ACPI_FANW: 8369 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8370 rc = -EIO; 8371 break; 8372 } 8373 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8374 rc = -EIO; 8375 break; 8376 } 8377 8378 rc = 0; 8379 break; 8380 8381 default: 8382 rc = -ENXIO; 8383 } 8384 8385 mutex_unlock(&fan_mutex); 8386 8387 if (!rc) 8388 vdbg_printk(TPACPI_DBG_FAN, 8389 "fan control: set fan control register to 0x%02x\n", 8390 s); 8391 return rc; 8392 } 8393 8394 static int fan_set_disable(void) 8395 { 8396 int rc; 8397 8398 if (!fan_control_allowed) 8399 return -EPERM; 8400 8401 if (mutex_lock_killable(&fan_mutex)) 8402 return -ERESTARTSYS; 8403 8404 rc = 0; 8405 switch (fan_control_access_mode) { 8406 case TPACPI_FAN_WR_ACPI_FANS: 8407 case TPACPI_FAN_WR_TPEC: 8408 if (!acpi_ec_write(fan_status_offset, 0x00)) 8409 rc = -EIO; 8410 else { 8411 fan_control_desired_level = 0; 8412 tp_features.fan_ctrl_status_undef = 0; 8413 } 8414 break; 8415 8416 case TPACPI_FAN_WR_ACPI_SFAN: 8417 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8418 rc = -EIO; 8419 else 8420 fan_control_desired_level = 0; 8421 break; 8422 8423 case TPACPI_FAN_WR_ACPI_FANW: 8424 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8425 rc = -EIO; 8426 break; 8427 } 8428 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8429 rc = -EIO; 8430 break; 8431 } 8432 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) { 8433 rc = -EIO; 8434 break; 8435 } 8436 rc = 0; 8437 break; 8438 8439 default: 8440 rc = -ENXIO; 8441 } 8442 8443 if (!rc) 8444 vdbg_printk(TPACPI_DBG_FAN, 8445 "fan control: set fan control register to 0\n"); 8446 8447 mutex_unlock(&fan_mutex); 8448 return rc; 8449 } 8450 8451 static int fan_set_speed(int speed) 8452 { 8453 int rc; 8454 8455 if (!fan_control_allowed) 8456 return -EPERM; 8457 8458 if (mutex_lock_killable(&fan_mutex)) 8459 return -ERESTARTSYS; 8460 8461 rc = 0; 8462 switch (fan_control_access_mode) { 8463 case TPACPI_FAN_WR_ACPI_FANS: 8464 if (speed >= 0 && speed <= 65535) { 8465 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8466 speed, speed, speed)) 8467 rc = -EIO; 8468 } else 8469 rc = -EINVAL; 8470 break; 8471 8472 case TPACPI_FAN_WR_ACPI_FANW: 8473 if (speed >= 0 && speed <= 65535) { 8474 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8475 rc = -EIO; 8476 break; 8477 } 8478 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8479 rc = -EIO; 8480 break; 8481 } 8482 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 8483 0x8102, speed * 100 / 65535)) 8484 rc = -EIO; 8485 } else 8486 rc = -EINVAL; 8487 break; 8488 8489 default: 8490 rc = -ENXIO; 8491 } 8492 8493 mutex_unlock(&fan_mutex); 8494 return rc; 8495 } 8496 8497 static void fan_watchdog_reset(void) 8498 { 8499 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8500 return; 8501 8502 if (fan_watchdog_maxinterval > 0 && 8503 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8504 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8505 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8506 else 8507 cancel_delayed_work(&fan_watchdog_task); 8508 } 8509 8510 static void fan_watchdog_fire(struct work_struct *ignored) 8511 { 8512 int rc; 8513 8514 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8515 return; 8516 8517 pr_notice("fan watchdog: enabling fan\n"); 8518 rc = fan_set_enable(); 8519 if (rc < 0) { 8520 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8521 rc); 8522 /* reschedule for later */ 8523 fan_watchdog_reset(); 8524 } 8525 } 8526 8527 /* 8528 * SYSFS fan layout: hwmon compatible (device) 8529 * 8530 * pwm*_enable: 8531 * 0: "disengaged" mode 8532 * 1: manual mode 8533 * 2: native EC "auto" mode (recommended, hardware default) 8534 * 8535 * pwm*: set speed in manual mode, ignored otherwise. 8536 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8537 * interpolation. 8538 * 8539 * fan*_input: tachometer reading, RPM 8540 * 8541 * 8542 * SYSFS fan layout: extensions 8543 * 8544 * fan_watchdog (driver): 8545 * fan watchdog interval in seconds, 0 disables (default), max 120 8546 */ 8547 8548 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8549 static ssize_t fan_pwm1_enable_show(struct device *dev, 8550 struct device_attribute *attr, 8551 char *buf) 8552 { 8553 int res, mode; 8554 u8 status; 8555 8556 res = fan_get_status_safe(&status); 8557 if (res) 8558 return res; 8559 8560 if (status & TP_EC_FAN_FULLSPEED) { 8561 mode = 0; 8562 } else if (status & TP_EC_FAN_AUTO) { 8563 mode = 2; 8564 } else 8565 mode = 1; 8566 8567 return sysfs_emit(buf, "%d\n", mode); 8568 } 8569 8570 static ssize_t fan_pwm1_enable_store(struct device *dev, 8571 struct device_attribute *attr, 8572 const char *buf, size_t count) 8573 { 8574 unsigned long t; 8575 int res, level; 8576 8577 if (parse_strtoul(buf, 2, &t)) 8578 return -EINVAL; 8579 8580 tpacpi_disclose_usertask("hwmon pwm1_enable", 8581 "set fan mode to %lu\n", t); 8582 8583 switch (t) { 8584 case 0: 8585 level = TP_EC_FAN_FULLSPEED; 8586 break; 8587 case 1: 8588 level = TPACPI_FAN_LAST_LEVEL; 8589 break; 8590 case 2: 8591 level = TP_EC_FAN_AUTO; 8592 break; 8593 case 3: 8594 /* reserved for software-controlled auto mode */ 8595 return -ENOSYS; 8596 default: 8597 return -EINVAL; 8598 } 8599 8600 res = fan_set_level_safe(level); 8601 if (res == -ENXIO) 8602 return -EINVAL; 8603 else if (res < 0) 8604 return res; 8605 8606 fan_watchdog_reset(); 8607 8608 return count; 8609 } 8610 8611 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8612 fan_pwm1_enable_show, fan_pwm1_enable_store); 8613 8614 /* sysfs fan pwm1 ------------------------------------------------------ */ 8615 static ssize_t fan_pwm1_show(struct device *dev, 8616 struct device_attribute *attr, 8617 char *buf) 8618 { 8619 int res; 8620 u8 status; 8621 8622 res = fan_get_status_safe(&status); 8623 if (res) 8624 return res; 8625 8626 if ((status & 8627 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8628 status = fan_control_desired_level; 8629 8630 if (status > 7) 8631 status = 7; 8632 8633 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8634 } 8635 8636 static ssize_t fan_pwm1_store(struct device *dev, 8637 struct device_attribute *attr, 8638 const char *buf, size_t count) 8639 { 8640 unsigned long s; 8641 int rc; 8642 u8 status, newlevel; 8643 8644 if (parse_strtoul(buf, 255, &s)) 8645 return -EINVAL; 8646 8647 tpacpi_disclose_usertask("hwmon pwm1", 8648 "set fan speed to %lu\n", s); 8649 8650 /* scale down from 0-255 to 0-7 */ 8651 newlevel = (s >> 5) & 0x07; 8652 8653 if (mutex_lock_killable(&fan_mutex)) 8654 return -ERESTARTSYS; 8655 8656 rc = fan_get_status(&status); 8657 if (!rc && (status & 8658 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8659 rc = fan_set_level(newlevel); 8660 if (rc == -ENXIO) 8661 rc = -EINVAL; 8662 else if (!rc) { 8663 fan_update_desired_level(newlevel); 8664 fan_watchdog_reset(); 8665 } 8666 } 8667 8668 mutex_unlock(&fan_mutex); 8669 return (rc) ? rc : count; 8670 } 8671 8672 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8673 8674 /* sysfs fan fan1_input ------------------------------------------------ */ 8675 static ssize_t fan_fan1_input_show(struct device *dev, 8676 struct device_attribute *attr, 8677 char *buf) 8678 { 8679 int res; 8680 unsigned int speed; 8681 8682 res = fan_get_speed(&speed); 8683 if (res < 0) 8684 return res; 8685 8686 /* Check for fan speeds displayed in hexadecimal */ 8687 if (!ecfw_with_fan_dec_rpm) 8688 return sysfs_emit(buf, "%u\n", speed); 8689 else 8690 return sysfs_emit(buf, "%x\n", speed); 8691 } 8692 8693 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8694 8695 /* sysfs fan fan2_input ------------------------------------------------ */ 8696 static ssize_t fan_fan2_input_show(struct device *dev, 8697 struct device_attribute *attr, 8698 char *buf) 8699 { 8700 int res; 8701 unsigned int speed; 8702 8703 res = fan2_get_speed(&speed); 8704 if (res < 0) 8705 return res; 8706 8707 /* Check for fan speeds displayed in hexadecimal */ 8708 if (!ecfw_with_fan_dec_rpm) 8709 return sysfs_emit(buf, "%u\n", speed); 8710 else 8711 return sysfs_emit(buf, "%x\n", speed); 8712 } 8713 8714 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8715 8716 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8717 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8718 { 8719 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8720 } 8721 8722 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8723 size_t count) 8724 { 8725 unsigned long t; 8726 8727 if (parse_strtoul(buf, 120, &t)) 8728 return -EINVAL; 8729 8730 if (!fan_control_allowed) 8731 return -EPERM; 8732 8733 fan_watchdog_maxinterval = t; 8734 fan_watchdog_reset(); 8735 8736 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8737 8738 return count; 8739 } 8740 static DRIVER_ATTR_RW(fan_watchdog); 8741 8742 /* --------------------------------------------------------------------- */ 8743 8744 static struct attribute *fan_attributes[] = { 8745 &dev_attr_pwm1_enable.attr, 8746 &dev_attr_pwm1.attr, 8747 &dev_attr_fan1_input.attr, 8748 &dev_attr_fan2_input.attr, 8749 NULL 8750 }; 8751 8752 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8753 int n) 8754 { 8755 if (fan_status_access_mode == TPACPI_FAN_NONE && 8756 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8757 return 0; 8758 8759 if (attr == &dev_attr_fan2_input.attr) { 8760 if (!tp_features.second_fan) 8761 return 0; 8762 } 8763 8764 return attr->mode; 8765 } 8766 8767 static const struct attribute_group fan_attr_group = { 8768 .is_visible = fan_attr_is_visible, 8769 .attrs = fan_attributes, 8770 }; 8771 8772 static struct attribute *fan_driver_attributes[] = { 8773 &driver_attr_fan_watchdog.attr, 8774 NULL 8775 }; 8776 8777 static const struct attribute_group fan_driver_attr_group = { 8778 .is_visible = fan_attr_is_visible, 8779 .attrs = fan_driver_attributes, 8780 }; 8781 8782 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8783 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8784 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8785 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8786 #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ 8787 #define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ 8788 8789 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8790 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8791 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8792 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8793 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8794 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8795 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8796 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8797 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8798 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8799 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8800 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8801 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8802 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8803 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8804 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8805 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8806 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ 8807 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ 8808 TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */ 8809 TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */ 8810 TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */ 8811 TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */ 8812 TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ 8813 TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ 8814 TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ 8815 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8816 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ 8817 }; 8818 8819 static int __init fan_init(struct ibm_init_struct *iibm) 8820 { 8821 unsigned long quirks; 8822 8823 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8824 "initializing fan subdriver\n"); 8825 8826 mutex_init(&fan_mutex); 8827 fan_status_access_mode = TPACPI_FAN_NONE; 8828 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8829 fan_control_commands = 0; 8830 fan_watchdog_maxinterval = 0; 8831 tp_features.fan_ctrl_status_undef = 0; 8832 tp_features.second_fan = 0; 8833 tp_features.second_fan_ctl = 0; 8834 fan_control_desired_level = 7; 8835 8836 if (tpacpi_is_ibm()) { 8837 TPACPI_ACPIHANDLE_INIT(fans); 8838 TPACPI_ACPIHANDLE_INIT(gfan); 8839 TPACPI_ACPIHANDLE_INIT(sfan); 8840 } 8841 if (tpacpi_is_lenovo()) { 8842 TPACPI_ACPIHANDLE_INIT(fang); 8843 TPACPI_ACPIHANDLE_INIT(fanw); 8844 } 8845 8846 quirks = tpacpi_check_quirks(fan_quirk_table, 8847 ARRAY_SIZE(fan_quirk_table)); 8848 8849 if (quirks & TPACPI_FAN_NOFAN) { 8850 pr_info("No integrated ThinkPad fan available\n"); 8851 return -ENODEV; 8852 } 8853 8854 if (quirks & TPACPI_FAN_NS) { 8855 pr_info("ECFW with non-standard fan reg control found\n"); 8856 fan_with_ns_addr = 1; 8857 /* Fan ctrl support from host is undefined for now */ 8858 tp_features.fan_ctrl_status_undef = 1; 8859 } 8860 8861 /* Check for the EC/BIOS with RPM reported in decimal*/ 8862 if (quirks & TPACPI_FAN_DECRPM) { 8863 pr_info("ECFW with fan RPM as decimal in EC register\n"); 8864 ecfw_with_fan_dec_rpm = 1; 8865 tp_features.fan_ctrl_status_undef = 1; 8866 } 8867 8868 if (gfan_handle) { 8869 /* 570, 600e/x, 770e, 770x */ 8870 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8871 } else if (fang_handle) { 8872 /* E531 */ 8873 fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG; 8874 } else { 8875 /* all other ThinkPads: note that even old-style 8876 * ThinkPad ECs supports the fan control register */ 8877 if (fan_with_ns_addr || 8878 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { 8879 int res; 8880 unsigned int speed; 8881 8882 fan_status_access_mode = fan_with_ns_addr ? 8883 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; 8884 8885 if (quirks & TPACPI_FAN_Q1) 8886 fan_quirk1_setup(); 8887 /* Try and probe the 2nd fan */ 8888 tp_features.second_fan = 1; /* needed for get_speed to work */ 8889 res = fan2_get_speed(&speed); 8890 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8891 /* It responded - so let's assume it's there */ 8892 tp_features.second_fan = 1; 8893 /* fan control not currently available for ns ECFW */ 8894 tp_features.second_fan_ctl = !fan_with_ns_addr; 8895 pr_info("secondary fan control detected & enabled\n"); 8896 } else { 8897 /* Fan not auto-detected */ 8898 tp_features.second_fan = 0; 8899 if (quirks & TPACPI_FAN_2FAN) { 8900 tp_features.second_fan = 1; 8901 pr_info("secondary fan support enabled\n"); 8902 } 8903 if (quirks & TPACPI_FAN_2CTL) { 8904 tp_features.second_fan = 1; 8905 tp_features.second_fan_ctl = 1; 8906 pr_info("secondary fan control enabled\n"); 8907 } 8908 } 8909 } else { 8910 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8911 return -ENODEV; 8912 } 8913 } 8914 8915 if (sfan_handle) { 8916 /* 570, 770x-JL */ 8917 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8918 fan_control_commands |= 8919 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8920 } else if (fanw_handle) { 8921 /* E531 */ 8922 fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW; 8923 fan_control_commands |= 8924 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE; 8925 } else { 8926 if (!gfan_handle) { 8927 /* gfan without sfan means no fan control */ 8928 /* all other models implement TP EC 0x2f control */ 8929 8930 if (fans_handle) { 8931 /* X31, X40, X41 */ 8932 fan_control_access_mode = 8933 TPACPI_FAN_WR_ACPI_FANS; 8934 fan_control_commands |= 8935 TPACPI_FAN_CMD_SPEED | 8936 TPACPI_FAN_CMD_LEVEL | 8937 TPACPI_FAN_CMD_ENABLE; 8938 } else { 8939 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8940 fan_control_commands |= 8941 TPACPI_FAN_CMD_LEVEL | 8942 TPACPI_FAN_CMD_ENABLE; 8943 } 8944 } 8945 } 8946 8947 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8948 "fan is %s, modes %d, %d\n", 8949 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8950 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8951 fan_status_access_mode, fan_control_access_mode); 8952 8953 /* fan control master switch */ 8954 if (!fan_control_allowed) { 8955 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8956 fan_control_commands = 0; 8957 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8958 "fan control features disabled by parameter\n"); 8959 } 8960 8961 /* update fan_control_desired_level */ 8962 if (fan_status_access_mode != TPACPI_FAN_NONE) 8963 fan_get_status_safe(NULL); 8964 8965 if (fan_status_access_mode == TPACPI_FAN_NONE && 8966 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8967 return -ENODEV; 8968 8969 return 0; 8970 } 8971 8972 static void fan_exit(void) 8973 { 8974 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8975 "cancelling any pending fan watchdog tasks\n"); 8976 8977 cancel_delayed_work(&fan_watchdog_task); 8978 flush_workqueue(tpacpi_wq); 8979 } 8980 8981 static void fan_suspend(void) 8982 { 8983 int rc; 8984 8985 if (!fan_control_allowed) 8986 return; 8987 8988 /* Store fan status in cache */ 8989 fan_control_resume_level = 0; 8990 rc = fan_get_status_safe(&fan_control_resume_level); 8991 if (rc) 8992 pr_notice("failed to read fan level for later restore during resume: %d\n", 8993 rc); 8994 8995 /* if it is undefined, don't attempt to restore it. 8996 * KEEP THIS LAST */ 8997 if (tp_features.fan_ctrl_status_undef) 8998 fan_control_resume_level = 0; 8999 } 9000 9001 static void fan_resume(void) 9002 { 9003 u8 current_level = 7; 9004 bool do_set = false; 9005 int rc; 9006 9007 /* DSDT *always* updates status on resume */ 9008 tp_features.fan_ctrl_status_undef = 0; 9009 9010 if (!fan_control_allowed || 9011 !fan_control_resume_level || 9012 fan_get_status_safe(¤t_level)) 9013 return; 9014 9015 switch (fan_control_access_mode) { 9016 case TPACPI_FAN_WR_ACPI_SFAN: 9017 /* never decrease fan level */ 9018 do_set = (fan_control_resume_level > current_level); 9019 break; 9020 case TPACPI_FAN_WR_ACPI_FANS: 9021 case TPACPI_FAN_WR_TPEC: 9022 /* never decrease fan level, scale is: 9023 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9024 * 9025 * We expect the firmware to set either 7 or AUTO, but we 9026 * handle FULLSPEED out of paranoia. 9027 * 9028 * So, we can safely only restore FULLSPEED or 7, anything 9029 * else could slow the fan. Restoring AUTO is useless, at 9030 * best that's exactly what the DSDT already set (it is the 9031 * slower it uses). 9032 * 9033 * Always keep in mind that the DSDT *will* have set the 9034 * fans to what the vendor supposes is the best level. We 9035 * muck with it only to speed the fan up. 9036 */ 9037 if (fan_control_resume_level != 7 && 9038 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9039 return; 9040 else 9041 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9042 (current_level != fan_control_resume_level); 9043 break; 9044 default: 9045 return; 9046 } 9047 if (do_set) { 9048 pr_notice("restoring fan level to 0x%02x\n", 9049 fan_control_resume_level); 9050 rc = fan_set_level_safe(fan_control_resume_level); 9051 if (rc < 0) 9052 pr_notice("failed to restore fan level: %d\n", rc); 9053 } 9054 } 9055 9056 static int fan_read(struct seq_file *m) 9057 { 9058 int rc; 9059 u8 status; 9060 unsigned int speed = 0; 9061 9062 switch (fan_status_access_mode) { 9063 case TPACPI_FAN_RD_ACPI_GFAN: 9064 /* 570, 600e/x, 770e, 770x */ 9065 rc = fan_get_status_safe(&status); 9066 if (rc) 9067 return rc; 9068 9069 seq_printf(m, "status:\t\t%s\n" 9070 "level:\t\t%d\n", 9071 str_enabled_disabled(status), status); 9072 break; 9073 9074 case TPACPI_FAN_RD_TPEC_NS: 9075 case TPACPI_FAN_RD_TPEC: 9076 case TPACPI_FAN_RD_ACPI_FANG: 9077 /* all except 570, 600e/x, 770e, 770x */ 9078 rc = fan_get_status_safe(&status); 9079 if (rc) 9080 return rc; 9081 9082 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9083 9084 rc = fan_get_speed(&speed); 9085 if (rc < 0) 9086 return rc; 9087 9088 /* Check for fan speeds displayed in hexadecimal */ 9089 if (!ecfw_with_fan_dec_rpm) 9090 seq_printf(m, "speed:\t\t%d\n", speed); 9091 else 9092 seq_printf(m, "speed:\t\t%x\n", speed); 9093 9094 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { 9095 /* 9096 * No full speed bit in NS EC 9097 * EC Auto mode is set by default. 9098 * No other levels settings available 9099 */ 9100 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); 9101 } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) { 9102 if (status & TP_EC_FAN_FULLSPEED) 9103 /* Disengaged mode takes precedence */ 9104 seq_printf(m, "level:\t\tdisengaged\n"); 9105 else if (status & TP_EC_FAN_AUTO) 9106 seq_printf(m, "level:\t\tauto\n"); 9107 else 9108 seq_printf(m, "level:\t\t%d\n", status); 9109 } 9110 break; 9111 9112 case TPACPI_FAN_NONE: 9113 default: 9114 seq_printf(m, "status:\t\tnot supported\n"); 9115 } 9116 9117 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9118 seq_printf(m, "commands:\tlevel <level>"); 9119 9120 switch (fan_control_access_mode) { 9121 case TPACPI_FAN_WR_ACPI_SFAN: 9122 seq_printf(m, " (<level> is 0-7)\n"); 9123 break; 9124 9125 default: 9126 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9127 break; 9128 } 9129 } 9130 9131 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9132 seq_printf(m, "commands:\tenable, disable\n" 9133 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9134 9135 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9136 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9137 9138 return 0; 9139 } 9140 9141 static int fan_write_cmd_level(const char *cmd, int *rc) 9142 { 9143 int level; 9144 9145 if (strstarts(cmd, "level auto")) 9146 level = TP_EC_FAN_AUTO; 9147 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9148 level = TP_EC_FAN_FULLSPEED; 9149 else if (sscanf(cmd, "level %d", &level) != 1) 9150 return 0; 9151 9152 *rc = fan_set_level_safe(level); 9153 if (*rc == -ENXIO) 9154 pr_err("level command accepted for unsupported access mode %d\n", 9155 fan_control_access_mode); 9156 else if (!*rc) 9157 tpacpi_disclose_usertask("procfs fan", 9158 "set level to %d\n", level); 9159 9160 return 1; 9161 } 9162 9163 static int fan_write_cmd_enable(const char *cmd, int *rc) 9164 { 9165 if (!strstarts(cmd, "enable")) 9166 return 0; 9167 9168 *rc = fan_set_enable(); 9169 if (*rc == -ENXIO) 9170 pr_err("enable command accepted for unsupported access mode %d\n", 9171 fan_control_access_mode); 9172 else if (!*rc) 9173 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9174 9175 return 1; 9176 } 9177 9178 static int fan_write_cmd_disable(const char *cmd, int *rc) 9179 { 9180 if (!strstarts(cmd, "disable")) 9181 return 0; 9182 9183 *rc = fan_set_disable(); 9184 if (*rc == -ENXIO) 9185 pr_err("disable command accepted for unsupported access mode %d\n", 9186 fan_control_access_mode); 9187 else if (!*rc) 9188 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9189 9190 return 1; 9191 } 9192 9193 static int fan_write_cmd_speed(const char *cmd, int *rc) 9194 { 9195 int speed; 9196 9197 /* TODO: 9198 * Support speed <low> <medium> <high> ? */ 9199 9200 if (sscanf(cmd, "speed %d", &speed) != 1) 9201 return 0; 9202 9203 *rc = fan_set_speed(speed); 9204 if (*rc == -ENXIO) 9205 pr_err("speed command accepted for unsupported access mode %d\n", 9206 fan_control_access_mode); 9207 else if (!*rc) 9208 tpacpi_disclose_usertask("procfs fan", 9209 "set speed to %d\n", speed); 9210 9211 return 1; 9212 } 9213 9214 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9215 { 9216 int interval; 9217 9218 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9219 return 0; 9220 9221 if (interval < 0 || interval > 120) 9222 *rc = -EINVAL; 9223 else { 9224 fan_watchdog_maxinterval = interval; 9225 tpacpi_disclose_usertask("procfs fan", 9226 "set watchdog timer to %d\n", 9227 interval); 9228 } 9229 9230 return 1; 9231 } 9232 9233 static int fan_write(char *buf) 9234 { 9235 char *cmd; 9236 int rc = 0; 9237 9238 while (!rc && (cmd = strsep(&buf, ","))) { 9239 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9240 fan_write_cmd_level(cmd, &rc)) && 9241 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9242 (fan_write_cmd_enable(cmd, &rc) || 9243 fan_write_cmd_disable(cmd, &rc) || 9244 fan_write_cmd_watchdog(cmd, &rc))) && 9245 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9246 fan_write_cmd_speed(cmd, &rc)) 9247 ) 9248 rc = -EINVAL; 9249 else if (!rc) 9250 fan_watchdog_reset(); 9251 } 9252 9253 return rc; 9254 } 9255 9256 static struct ibm_struct fan_driver_data = { 9257 .name = "fan", 9258 .read = fan_read, 9259 .write = fan_write, 9260 .exit = fan_exit, 9261 .suspend = fan_suspend, 9262 .resume = fan_resume, 9263 }; 9264 9265 /************************************************************************* 9266 * Mute LED subdriver 9267 */ 9268 9269 #define TPACPI_LED_MAX 2 9270 9271 struct tp_led_table { 9272 acpi_string name; 9273 int on_value; 9274 int off_value; 9275 int state; 9276 }; 9277 9278 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9279 [LED_AUDIO_MUTE] = { 9280 .name = "SSMS", 9281 .on_value = 1, 9282 .off_value = 0, 9283 }, 9284 [LED_AUDIO_MICMUTE] = { 9285 .name = "MMTS", 9286 .on_value = 2, 9287 .off_value = 0, 9288 }, 9289 }; 9290 9291 static int mute_led_on_off(struct tp_led_table *t, bool state) 9292 { 9293 acpi_handle temp; 9294 int output; 9295 9296 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9297 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9298 return -EIO; 9299 } 9300 9301 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9302 state ? t->on_value : t->off_value)) 9303 return -EIO; 9304 9305 t->state = state; 9306 return state; 9307 } 9308 9309 static int tpacpi_led_set(int whichled, bool on) 9310 { 9311 struct tp_led_table *t; 9312 9313 t = &led_tables[whichled]; 9314 if (t->state < 0 || t->state == on) 9315 return t->state; 9316 return mute_led_on_off(t, on); 9317 } 9318 9319 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9320 enum led_brightness brightness) 9321 { 9322 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9323 } 9324 9325 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9326 enum led_brightness brightness) 9327 { 9328 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9329 } 9330 9331 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9332 [LED_AUDIO_MUTE] = { 9333 .name = "platform::mute", 9334 .max_brightness = 1, 9335 .brightness_set_blocking = tpacpi_led_mute_set, 9336 .default_trigger = "audio-mute", 9337 }, 9338 [LED_AUDIO_MICMUTE] = { 9339 .name = "platform::micmute", 9340 .max_brightness = 1, 9341 .brightness_set_blocking = tpacpi_led_micmute_set, 9342 .default_trigger = "audio-micmute", 9343 }, 9344 }; 9345 9346 static int mute_led_init(struct ibm_init_struct *iibm) 9347 { 9348 acpi_handle temp; 9349 int i, err; 9350 9351 for (i = 0; i < TPACPI_LED_MAX; i++) { 9352 struct tp_led_table *t = &led_tables[i]; 9353 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9354 t->state = -ENODEV; 9355 continue; 9356 } 9357 9358 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9359 if (err < 0) { 9360 while (i--) 9361 led_classdev_unregister(&mute_led_cdev[i]); 9362 return err; 9363 } 9364 } 9365 return 0; 9366 } 9367 9368 static void mute_led_exit(void) 9369 { 9370 int i; 9371 9372 for (i = 0; i < TPACPI_LED_MAX; i++) { 9373 led_classdev_unregister(&mute_led_cdev[i]); 9374 tpacpi_led_set(i, false); 9375 } 9376 } 9377 9378 static void mute_led_resume(void) 9379 { 9380 int i; 9381 9382 for (i = 0; i < TPACPI_LED_MAX; i++) { 9383 struct tp_led_table *t = &led_tables[i]; 9384 if (t->state >= 0) 9385 mute_led_on_off(t, t->state); 9386 } 9387 } 9388 9389 static struct ibm_struct mute_led_driver_data = { 9390 .name = "mute_led", 9391 .exit = mute_led_exit, 9392 .resume = mute_led_resume, 9393 }; 9394 9395 /* 9396 * Battery Wear Control Driver 9397 * Contact: Ognjen Galic <smclt30p@gmail.com> 9398 */ 9399 9400 /* Metadata */ 9401 9402 #define GET_START "BCTG" 9403 #define SET_START "BCCS" 9404 #define GET_STOP "BCSG" 9405 #define SET_STOP "BCSS" 9406 #define GET_DISCHARGE "BDSG" 9407 #define SET_DISCHARGE "BDSS" 9408 #define GET_INHIBIT "BICG" 9409 #define SET_INHIBIT "BICS" 9410 9411 enum { 9412 BAT_ANY = 0, 9413 BAT_PRIMARY = 1, 9414 BAT_SECONDARY = 2 9415 }; 9416 9417 enum { 9418 /* Error condition bit */ 9419 METHOD_ERR = BIT(31), 9420 }; 9421 9422 enum { 9423 /* This is used in the get/set helpers */ 9424 THRESHOLD_START, 9425 THRESHOLD_STOP, 9426 FORCE_DISCHARGE, 9427 INHIBIT_CHARGE, 9428 }; 9429 9430 struct tpacpi_battery_data { 9431 int charge_start; 9432 int start_support; 9433 int charge_stop; 9434 int stop_support; 9435 unsigned int charge_behaviours; 9436 }; 9437 9438 struct tpacpi_battery_driver_data { 9439 struct tpacpi_battery_data batteries[3]; 9440 int individual_addressing; 9441 }; 9442 9443 static struct tpacpi_battery_driver_data battery_info; 9444 9445 /* ACPI helpers/functions/probes */ 9446 9447 /* 9448 * This evaluates a ACPI method call specific to the battery 9449 * ACPI extension. The specifics are that an error is marked 9450 * in the 32rd bit of the response, so we just check that here. 9451 */ 9452 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9453 { 9454 int response; 9455 9456 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9457 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9458 return AE_ERROR; 9459 } 9460 if (response & METHOD_ERR) { 9461 acpi_handle_err(hkey_handle, 9462 "%s evaluated but flagged as error", method); 9463 return AE_ERROR; 9464 } 9465 *ret = response; 9466 return AE_OK; 9467 } 9468 9469 static int tpacpi_battery_get(int what, int battery, int *ret) 9470 { 9471 switch (what) { 9472 case THRESHOLD_START: 9473 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9474 return -ENODEV; 9475 9476 /* The value is in the low 8 bits of the response */ 9477 *ret = *ret & 0xFF; 9478 return 0; 9479 case THRESHOLD_STOP: 9480 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9481 return -ENODEV; 9482 /* Value is in lower 8 bits */ 9483 *ret = *ret & 0xFF; 9484 /* 9485 * On the stop value, if we return 0 that 9486 * does not make any sense. 0 means Default, which 9487 * means that charging stops at 100%, so we return 9488 * that. 9489 */ 9490 if (*ret == 0) 9491 *ret = 100; 9492 return 0; 9493 case FORCE_DISCHARGE: 9494 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9495 return -ENODEV; 9496 /* The force discharge status is in bit 0 */ 9497 *ret = *ret & 0x01; 9498 return 0; 9499 case INHIBIT_CHARGE: 9500 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9501 return -ENODEV; 9502 /* The inhibit charge status is in bit 0 */ 9503 *ret = *ret & 0x01; 9504 return 0; 9505 default: 9506 pr_crit("wrong parameter: %d", what); 9507 return -EINVAL; 9508 } 9509 } 9510 9511 static int tpacpi_battery_set(int what, int battery, int value) 9512 { 9513 int param, ret; 9514 /* The first 8 bits are the value of the threshold */ 9515 param = value; 9516 /* The battery ID is in bits 8-9, 2 bits */ 9517 param |= battery << 8; 9518 9519 switch (what) { 9520 case THRESHOLD_START: 9521 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9522 pr_err("failed to set charge threshold on battery %d", 9523 battery); 9524 return -ENODEV; 9525 } 9526 return 0; 9527 case THRESHOLD_STOP: 9528 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9529 pr_err("failed to set stop threshold: %d", battery); 9530 return -ENODEV; 9531 } 9532 return 0; 9533 case FORCE_DISCHARGE: 9534 /* Force discharge is in bit 0, 9535 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9536 * battery ID is in bits 8-9, 2 bits. 9537 */ 9538 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9539 pr_err("failed to set force discharge on %d", battery); 9540 return -ENODEV; 9541 } 9542 return 0; 9543 case INHIBIT_CHARGE: 9544 /* When setting inhibit charge, we set a default value of 9545 * always breaking on AC detach and the effective time is set to 9546 * be permanent. 9547 * The battery ID is in bits 4-5, 2 bits, 9548 * the effective time is in bits 8-23, 2 bytes. 9549 * A time of FFFF indicates forever. 9550 */ 9551 param = value; 9552 param |= battery << 4; 9553 param |= 0xFFFF << 8; 9554 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9555 pr_err("failed to set inhibit charge on %d", battery); 9556 return -ENODEV; 9557 } 9558 return 0; 9559 default: 9560 pr_crit("wrong parameter: %d", what); 9561 return -EINVAL; 9562 } 9563 } 9564 9565 static int tpacpi_battery_set_validate(int what, int battery, int value) 9566 { 9567 int ret, v; 9568 9569 ret = tpacpi_battery_set(what, battery, value); 9570 if (ret < 0) 9571 return ret; 9572 9573 ret = tpacpi_battery_get(what, battery, &v); 9574 if (ret < 0) 9575 return ret; 9576 9577 if (v == value) 9578 return 0; 9579 9580 msleep(500); 9581 9582 ret = tpacpi_battery_get(what, battery, &v); 9583 if (ret < 0) 9584 return ret; 9585 9586 if (v == value) 9587 return 0; 9588 9589 return -EIO; 9590 } 9591 9592 static int tpacpi_battery_probe(int battery) 9593 { 9594 int ret = 0; 9595 9596 memset(&battery_info.batteries[battery], 0, 9597 sizeof(battery_info.batteries[battery])); 9598 9599 /* 9600 * 1) Get the current start threshold 9601 * 2) Check for support 9602 * 3) Get the current stop threshold 9603 * 4) Check for support 9604 * 5) Get the current force discharge status 9605 * 6) Check for support 9606 * 7) Get the current inhibit charge status 9607 * 8) Check for support 9608 */ 9609 if (acpi_has_method(hkey_handle, GET_START)) { 9610 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9611 pr_err("Error probing battery %d\n", battery); 9612 return -ENODEV; 9613 } 9614 /* Individual addressing is in bit 9 */ 9615 if (ret & BIT(9)) 9616 battery_info.individual_addressing = true; 9617 /* Support is marked in bit 8 */ 9618 if (ret & BIT(8)) 9619 battery_info.batteries[battery].start_support = 1; 9620 else 9621 return -ENODEV; 9622 if (tpacpi_battery_get(THRESHOLD_START, battery, 9623 &battery_info.batteries[battery].charge_start)) { 9624 pr_err("Error probing battery %d\n", battery); 9625 return -ENODEV; 9626 } 9627 } 9628 if (acpi_has_method(hkey_handle, GET_STOP)) { 9629 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9630 pr_err("Error probing battery stop; %d\n", battery); 9631 return -ENODEV; 9632 } 9633 /* Support is marked in bit 8 */ 9634 if (ret & BIT(8)) 9635 battery_info.batteries[battery].stop_support = 1; 9636 else 9637 return -ENODEV; 9638 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9639 &battery_info.batteries[battery].charge_stop)) { 9640 pr_err("Error probing battery stop: %d\n", battery); 9641 return -ENODEV; 9642 } 9643 } 9644 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9645 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9646 pr_err("Error probing battery discharge; %d\n", battery); 9647 return -ENODEV; 9648 } 9649 /* Support is marked in bit 8 */ 9650 if (ret & BIT(8)) 9651 battery_info.batteries[battery].charge_behaviours |= 9652 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9653 } 9654 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9655 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9656 pr_err("Error probing battery inhibit charge; %d\n", battery); 9657 return -ENODEV; 9658 } 9659 /* Support is marked in bit 5 */ 9660 if (ret & BIT(5)) 9661 battery_info.batteries[battery].charge_behaviours |= 9662 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9663 } 9664 9665 battery_info.batteries[battery].charge_behaviours |= 9666 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9667 9668 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9669 battery, 9670 battery_info.batteries[battery].charge_start, 9671 battery_info.batteries[battery].charge_stop, 9672 battery_info.batteries[battery].charge_behaviours); 9673 9674 return 0; 9675 } 9676 9677 /* General helper functions */ 9678 9679 static int tpacpi_battery_get_id(const char *battery_name) 9680 { 9681 9682 if (strcmp(battery_name, "BAT0") == 0 || 9683 tp_features.battery_force_primary) 9684 return BAT_PRIMARY; 9685 if (strcmp(battery_name, "BAT1") == 0) 9686 return BAT_SECONDARY; 9687 /* 9688 * If for some reason the battery is not BAT0 nor is it 9689 * BAT1, we will assume it's the default, first battery, 9690 * AKA primary. 9691 */ 9692 pr_warn("unknown battery %s, assuming primary", battery_name); 9693 return BAT_PRIMARY; 9694 } 9695 9696 /* sysfs interface */ 9697 9698 static ssize_t tpacpi_battery_store(int what, 9699 struct device *dev, 9700 const char *buf, size_t count) 9701 { 9702 struct power_supply *supply = to_power_supply(dev); 9703 unsigned long value; 9704 int battery, rval; 9705 /* 9706 * Some systems have support for more than 9707 * one battery. If that is the case, 9708 * tpacpi_battery_probe marked that addressing 9709 * them individually is supported, so we do that 9710 * based on the device struct. 9711 * 9712 * On systems that are not supported, we assume 9713 * the primary as most of the ACPI calls fail 9714 * with "Any Battery" as the parameter. 9715 */ 9716 if (battery_info.individual_addressing) 9717 /* BAT_PRIMARY or BAT_SECONDARY */ 9718 battery = tpacpi_battery_get_id(supply->desc->name); 9719 else 9720 battery = BAT_PRIMARY; 9721 9722 rval = kstrtoul(buf, 10, &value); 9723 if (rval) 9724 return rval; 9725 9726 switch (what) { 9727 case THRESHOLD_START: 9728 if (!battery_info.batteries[battery].start_support) 9729 return -ENODEV; 9730 /* valid values are [0, 99] */ 9731 if (value > 99) 9732 return -EINVAL; 9733 if (value > battery_info.batteries[battery].charge_stop) 9734 return -EINVAL; 9735 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9736 return -ENODEV; 9737 battery_info.batteries[battery].charge_start = value; 9738 return count; 9739 9740 case THRESHOLD_STOP: 9741 if (!battery_info.batteries[battery].stop_support) 9742 return -ENODEV; 9743 /* valid values are [1, 100] */ 9744 if (value < 1 || value > 100) 9745 return -EINVAL; 9746 if (value < battery_info.batteries[battery].charge_start) 9747 return -EINVAL; 9748 battery_info.batteries[battery].charge_stop = value; 9749 /* 9750 * When 100 is passed to stop, we need to flip 9751 * it to 0 as that the EC understands that as 9752 * "Default", which will charge to 100% 9753 */ 9754 if (value == 100) 9755 value = 0; 9756 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9757 return -EINVAL; 9758 return count; 9759 default: 9760 pr_crit("Wrong parameter: %d", what); 9761 return -EINVAL; 9762 } 9763 return count; 9764 } 9765 9766 static ssize_t tpacpi_battery_show(int what, 9767 struct device *dev, 9768 char *buf) 9769 { 9770 struct power_supply *supply = to_power_supply(dev); 9771 int ret, battery; 9772 /* 9773 * Some systems have support for more than 9774 * one battery. If that is the case, 9775 * tpacpi_battery_probe marked that addressing 9776 * them individually is supported, so we; 9777 * based on the device struct. 9778 * 9779 * On systems that are not supported, we assume 9780 * the primary as most of the ACPI calls fail 9781 * with "Any Battery" as the parameter. 9782 */ 9783 if (battery_info.individual_addressing) 9784 /* BAT_PRIMARY or BAT_SECONDARY */ 9785 battery = tpacpi_battery_get_id(supply->desc->name); 9786 else 9787 battery = BAT_PRIMARY; 9788 if (tpacpi_battery_get(what, battery, &ret)) 9789 return -ENODEV; 9790 return sysfs_emit(buf, "%d\n", ret); 9791 } 9792 9793 static ssize_t charge_control_start_threshold_show(struct device *device, 9794 struct device_attribute *attr, 9795 char *buf) 9796 { 9797 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9798 } 9799 9800 static ssize_t charge_control_end_threshold_show(struct device *device, 9801 struct device_attribute *attr, 9802 char *buf) 9803 { 9804 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9805 } 9806 9807 static ssize_t charge_behaviour_show(struct device *dev, 9808 struct device_attribute *attr, 9809 char *buf) 9810 { 9811 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9812 struct power_supply *supply = to_power_supply(dev); 9813 unsigned int available; 9814 int ret, battery; 9815 9816 battery = tpacpi_battery_get_id(supply->desc->name); 9817 available = battery_info.batteries[battery].charge_behaviours; 9818 9819 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9820 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9821 return -ENODEV; 9822 if (ret) { 9823 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9824 goto out; 9825 } 9826 } 9827 9828 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9829 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9830 return -ENODEV; 9831 if (ret) { 9832 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9833 goto out; 9834 } 9835 } 9836 9837 out: 9838 return power_supply_charge_behaviour_show(dev, available, active, buf); 9839 } 9840 9841 static ssize_t charge_control_start_threshold_store(struct device *dev, 9842 struct device_attribute *attr, 9843 const char *buf, size_t count) 9844 { 9845 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9846 } 9847 9848 static ssize_t charge_control_end_threshold_store(struct device *dev, 9849 struct device_attribute *attr, 9850 const char *buf, size_t count) 9851 { 9852 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9853 } 9854 9855 static ssize_t charge_behaviour_store(struct device *dev, 9856 struct device_attribute *attr, 9857 const char *buf, size_t count) 9858 { 9859 struct power_supply *supply = to_power_supply(dev); 9860 int selected, battery, ret = 0; 9861 unsigned int available; 9862 9863 battery = tpacpi_battery_get_id(supply->desc->name); 9864 available = battery_info.batteries[battery].charge_behaviours; 9865 selected = power_supply_charge_behaviour_parse(available, buf); 9866 9867 if (selected < 0) 9868 return selected; 9869 9870 switch (selected) { 9871 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9872 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9873 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9874 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9875 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9876 if (ret < 0) 9877 return ret; 9878 break; 9879 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9880 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9881 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9882 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9883 if (ret < 0) 9884 return ret; 9885 break; 9886 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9887 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9888 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9889 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9890 if (ret < 0) 9891 return ret; 9892 break; 9893 default: 9894 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9895 return -EINVAL; 9896 } 9897 9898 return count; 9899 } 9900 9901 static DEVICE_ATTR_RW(charge_control_start_threshold); 9902 static DEVICE_ATTR_RW(charge_control_end_threshold); 9903 static DEVICE_ATTR_RW(charge_behaviour); 9904 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9905 charge_start_threshold, 9906 0644, 9907 charge_control_start_threshold_show, 9908 charge_control_start_threshold_store 9909 ); 9910 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9911 charge_stop_threshold, 9912 0644, 9913 charge_control_end_threshold_show, 9914 charge_control_end_threshold_store 9915 ); 9916 9917 static struct attribute *tpacpi_battery_attrs[] = { 9918 &dev_attr_charge_control_start_threshold.attr, 9919 &dev_attr_charge_control_end_threshold.attr, 9920 &dev_attr_charge_start_threshold.attr, 9921 &dev_attr_charge_stop_threshold.attr, 9922 &dev_attr_charge_behaviour.attr, 9923 NULL, 9924 }; 9925 9926 ATTRIBUTE_GROUPS(tpacpi_battery); 9927 9928 /* ACPI battery hooking */ 9929 9930 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9931 { 9932 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9933 9934 if (tpacpi_battery_probe(batteryid)) 9935 return -ENODEV; 9936 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9937 return -ENODEV; 9938 return 0; 9939 } 9940 9941 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9942 { 9943 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9944 return 0; 9945 } 9946 9947 static struct acpi_battery_hook battery_hook = { 9948 .add_battery = tpacpi_battery_add, 9949 .remove_battery = tpacpi_battery_remove, 9950 .name = "ThinkPad Battery Extension", 9951 }; 9952 9953 /* Subdriver init/exit */ 9954 9955 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9956 /* 9957 * Individual addressing is broken on models that expose the 9958 * primary battery as BAT1. 9959 */ 9960 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 9961 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9962 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9963 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9964 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9965 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9966 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9967 }; 9968 9969 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9970 { 9971 memset(&battery_info, 0, sizeof(battery_info)); 9972 9973 tp_features.battery_force_primary = tpacpi_check_quirks( 9974 battery_quirk_table, 9975 ARRAY_SIZE(battery_quirk_table)); 9976 9977 battery_hook_register(&battery_hook); 9978 return 0; 9979 } 9980 9981 static void tpacpi_battery_exit(void) 9982 { 9983 battery_hook_unregister(&battery_hook); 9984 } 9985 9986 static struct ibm_struct battery_driver_data = { 9987 .name = "battery", 9988 .exit = tpacpi_battery_exit, 9989 }; 9990 9991 /************************************************************************* 9992 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9993 */ 9994 9995 static struct drm_privacy_screen *lcdshadow_dev; 9996 static acpi_handle lcdshadow_get_handle; 9997 static acpi_handle lcdshadow_set_handle; 9998 9999 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 10000 enum drm_privacy_screen_status state) 10001 { 10002 int output; 10003 10004 if (WARN_ON(!mutex_is_locked(&priv->lock))) 10005 return -EIO; 10006 10007 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 10008 return -EIO; 10009 10010 priv->hw_state = priv->sw_state = state; 10011 return 0; 10012 } 10013 10014 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 10015 { 10016 int output; 10017 10018 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10019 return; 10020 10021 priv->hw_state = priv->sw_state = output & 0x1; 10022 } 10023 10024 static const struct drm_privacy_screen_ops lcdshadow_ops = { 10025 .set_sw_state = lcdshadow_set_sw_state, 10026 .get_hw_state = lcdshadow_get_hw_state, 10027 }; 10028 10029 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10030 { 10031 acpi_status status1, status2; 10032 int output; 10033 10034 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10035 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10036 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10037 return 0; 10038 10039 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10040 return -EIO; 10041 10042 if (!(output & 0x10000)) 10043 return 0; 10044 10045 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10046 &lcdshadow_ops, NULL); 10047 if (IS_ERR(lcdshadow_dev)) 10048 return PTR_ERR(lcdshadow_dev); 10049 10050 return 0; 10051 } 10052 10053 static void lcdshadow_exit(void) 10054 { 10055 drm_privacy_screen_unregister(lcdshadow_dev); 10056 } 10057 10058 static void lcdshadow_resume(void) 10059 { 10060 if (!lcdshadow_dev) 10061 return; 10062 10063 mutex_lock(&lcdshadow_dev->lock); 10064 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10065 mutex_unlock(&lcdshadow_dev->lock); 10066 } 10067 10068 static int lcdshadow_read(struct seq_file *m) 10069 { 10070 if (!lcdshadow_dev) { 10071 seq_puts(m, "status:\t\tnot supported\n"); 10072 } else { 10073 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10074 seq_puts(m, "commands:\t0, 1\n"); 10075 } 10076 10077 return 0; 10078 } 10079 10080 static int lcdshadow_write(char *buf) 10081 { 10082 char *cmd; 10083 int res, state = -EINVAL; 10084 10085 if (!lcdshadow_dev) 10086 return -ENODEV; 10087 10088 while ((cmd = strsep(&buf, ","))) { 10089 res = kstrtoint(cmd, 10, &state); 10090 if (res < 0) 10091 return res; 10092 } 10093 10094 if (state >= 2 || state < 0) 10095 return -EINVAL; 10096 10097 mutex_lock(&lcdshadow_dev->lock); 10098 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10099 mutex_unlock(&lcdshadow_dev->lock); 10100 10101 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10102 10103 return res; 10104 } 10105 10106 static struct ibm_struct lcdshadow_driver_data = { 10107 .name = "lcdshadow", 10108 .exit = lcdshadow_exit, 10109 .resume = lcdshadow_resume, 10110 .read = lcdshadow_read, 10111 .write = lcdshadow_write, 10112 }; 10113 10114 /************************************************************************* 10115 * Thinkpad sensor interfaces 10116 */ 10117 10118 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10119 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10120 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10121 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10122 10123 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10124 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10125 10126 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10127 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10128 10129 static bool has_palmsensor; 10130 static bool has_lapsensor; 10131 static bool palm_state; 10132 static bool lap_state; 10133 static int dytc_version; 10134 10135 static int dytc_command(int command, int *output) 10136 { 10137 acpi_handle dytc_handle; 10138 10139 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10140 /* Platform doesn't support DYTC */ 10141 return -ENODEV; 10142 } 10143 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10144 return -EIO; 10145 return 0; 10146 } 10147 10148 static int lapsensor_get(bool *present, bool *state) 10149 { 10150 int output, err; 10151 10152 *present = false; 10153 err = dytc_command(DYTC_CMD_GET, &output); 10154 if (err) 10155 return err; 10156 10157 *present = true; /*If we get his far, we have lapmode support*/ 10158 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10159 return 0; 10160 } 10161 10162 static int palmsensor_get(bool *present, bool *state) 10163 { 10164 acpi_handle psensor_handle; 10165 int output; 10166 10167 *present = false; 10168 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10169 return -ENODEV; 10170 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10171 return -EIO; 10172 10173 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10174 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10175 return 0; 10176 } 10177 10178 static void lapsensor_refresh(void) 10179 { 10180 bool state; 10181 int err; 10182 10183 if (has_lapsensor) { 10184 err = lapsensor_get(&has_lapsensor, &state); 10185 if (err) 10186 return; 10187 if (lap_state != state) { 10188 lap_state = state; 10189 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10190 } 10191 } 10192 } 10193 10194 static void palmsensor_refresh(void) 10195 { 10196 bool state; 10197 int err; 10198 10199 if (has_palmsensor) { 10200 err = palmsensor_get(&has_palmsensor, &state); 10201 if (err) 10202 return; 10203 if (palm_state != state) { 10204 palm_state = state; 10205 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10206 } 10207 } 10208 } 10209 10210 static ssize_t dytc_lapmode_show(struct device *dev, 10211 struct device_attribute *attr, 10212 char *buf) 10213 { 10214 if (has_lapsensor) 10215 return sysfs_emit(buf, "%d\n", lap_state); 10216 return sysfs_emit(buf, "\n"); 10217 } 10218 static DEVICE_ATTR_RO(dytc_lapmode); 10219 10220 static ssize_t palmsensor_show(struct device *dev, 10221 struct device_attribute *attr, 10222 char *buf) 10223 { 10224 if (has_palmsensor) 10225 return sysfs_emit(buf, "%d\n", palm_state); 10226 return sysfs_emit(buf, "\n"); 10227 } 10228 static DEVICE_ATTR_RO(palmsensor); 10229 10230 static struct attribute *proxsensor_attributes[] = { 10231 &dev_attr_dytc_lapmode.attr, 10232 &dev_attr_palmsensor.attr, 10233 NULL 10234 }; 10235 10236 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10237 struct attribute *attr, int n) 10238 { 10239 if (attr == &dev_attr_dytc_lapmode.attr) { 10240 /* 10241 * Platforms before DYTC version 5 claim to have a lap sensor, 10242 * but it doesn't work, so we ignore them. 10243 */ 10244 if (!has_lapsensor || dytc_version < 5) 10245 return 0; 10246 } else if (attr == &dev_attr_palmsensor.attr) { 10247 if (!has_palmsensor) 10248 return 0; 10249 } 10250 10251 return attr->mode; 10252 } 10253 10254 static const struct attribute_group proxsensor_attr_group = { 10255 .is_visible = proxsensor_attr_is_visible, 10256 .attrs = proxsensor_attributes, 10257 }; 10258 10259 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10260 { 10261 int palm_err, lap_err; 10262 10263 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10264 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10265 /* If support isn't available for both devices return -ENODEV */ 10266 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10267 return -ENODEV; 10268 /* Otherwise, if there was an error return it */ 10269 if (palm_err && (palm_err != -ENODEV)) 10270 return palm_err; 10271 if (lap_err && (lap_err != -ENODEV)) 10272 return lap_err; 10273 10274 return 0; 10275 } 10276 10277 static struct ibm_struct proxsensor_driver_data = { 10278 .name = "proximity-sensor", 10279 }; 10280 10281 /************************************************************************* 10282 * DYTC Platform Profile interface 10283 */ 10284 10285 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10286 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10287 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10288 10289 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10290 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10291 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10292 #define DYTC_FC_AMT 31 /* AMT mode supported */ 10293 10294 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10295 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10296 10297 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10298 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10299 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10300 10301 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10302 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10303 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10304 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10305 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10306 10307 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10308 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10309 10310 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10311 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10312 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10313 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10314 10315 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10316 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10317 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10318 10319 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10320 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10321 10322 #define DYTC_SET_COMMAND(function, mode, on) \ 10323 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10324 (mode) << DYTC_SET_MODE_BIT | \ 10325 (on) << DYTC_SET_VALID_BIT) 10326 10327 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10328 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10329 static int dytc_control_amt(bool enable); 10330 static bool dytc_amt_active; 10331 10332 static enum platform_profile_option dytc_current_profile; 10333 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10334 static DEFINE_MUTEX(dytc_mutex); 10335 static int dytc_capabilities; 10336 static bool dytc_mmc_get_available; 10337 static int profile_force; 10338 10339 static int convert_dytc_to_profile(int funcmode, int dytcmode, 10340 enum platform_profile_option *profile) 10341 { 10342 switch (funcmode) { 10343 case DYTC_FUNCTION_MMC: 10344 switch (dytcmode) { 10345 case DYTC_MODE_MMC_LOWPOWER: 10346 *profile = PLATFORM_PROFILE_LOW_POWER; 10347 break; 10348 case DYTC_MODE_MMC_DEFAULT: 10349 case DYTC_MODE_MMC_BALANCE: 10350 *profile = PLATFORM_PROFILE_BALANCED; 10351 break; 10352 case DYTC_MODE_MMC_PERFORM: 10353 *profile = PLATFORM_PROFILE_PERFORMANCE; 10354 break; 10355 default: /* Unknown mode */ 10356 return -EINVAL; 10357 } 10358 return 0; 10359 case DYTC_FUNCTION_PSC: 10360 switch (dytcmode) { 10361 case DYTC_MODE_PSC_LOWPOWER: 10362 *profile = PLATFORM_PROFILE_LOW_POWER; 10363 break; 10364 case DYTC_MODE_PSC_BALANCE: 10365 *profile = PLATFORM_PROFILE_BALANCED; 10366 break; 10367 case DYTC_MODE_PSC_PERFORM: 10368 *profile = PLATFORM_PROFILE_PERFORMANCE; 10369 break; 10370 default: /* Unknown mode */ 10371 return -EINVAL; 10372 } 10373 return 0; 10374 case DYTC_FUNCTION_AMT: 10375 /* For now return balanced. It's the closest we have to 'auto' */ 10376 *profile = PLATFORM_PROFILE_BALANCED; 10377 return 0; 10378 default: 10379 /* Unknown function */ 10380 pr_debug("unknown function 0x%x\n", funcmode); 10381 return -EOPNOTSUPP; 10382 } 10383 return 0; 10384 } 10385 10386 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10387 { 10388 switch (profile) { 10389 case PLATFORM_PROFILE_LOW_POWER: 10390 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10391 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10392 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10393 *perfmode = DYTC_MODE_PSC_LOWPOWER; 10394 break; 10395 case PLATFORM_PROFILE_BALANCED: 10396 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10397 *perfmode = DYTC_MODE_MMC_BALANCE; 10398 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10399 *perfmode = DYTC_MODE_PSC_BALANCE; 10400 break; 10401 case PLATFORM_PROFILE_PERFORMANCE: 10402 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10403 *perfmode = DYTC_MODE_MMC_PERFORM; 10404 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10405 *perfmode = DYTC_MODE_PSC_PERFORM; 10406 break; 10407 default: /* Unknown profile */ 10408 return -EOPNOTSUPP; 10409 } 10410 return 0; 10411 } 10412 10413 /* 10414 * dytc_profile_get: Function to register with platform_profile 10415 * handler. Returns current platform profile. 10416 */ 10417 static int dytc_profile_get(struct platform_profile_handler *pprof, 10418 enum platform_profile_option *profile) 10419 { 10420 *profile = dytc_current_profile; 10421 return 0; 10422 } 10423 10424 static int dytc_control_amt(bool enable) 10425 { 10426 int dummy; 10427 int err; 10428 int cmd; 10429 10430 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10431 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10432 return -ENODEV; 10433 } 10434 10435 if (enable) 10436 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10437 else 10438 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10439 10440 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10441 err = dytc_command(cmd, &dummy); 10442 if (err) 10443 return err; 10444 dytc_amt_active = enable; 10445 return 0; 10446 } 10447 10448 /* 10449 * Helper function - check if we are in CQL mode and if we are 10450 * - disable CQL, 10451 * - run the command 10452 * - enable CQL 10453 * If not in CQL mode, just run the command 10454 */ 10455 static int dytc_cql_command(int command, int *output) 10456 { 10457 int err, cmd_err, dummy; 10458 int cur_funcmode; 10459 10460 /* Determine if we are in CQL mode. This alters the commands we do */ 10461 err = dytc_command(DYTC_CMD_GET, output); 10462 if (err) 10463 return err; 10464 10465 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10466 /* Check if we're OK to return immediately */ 10467 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10468 return 0; 10469 10470 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10471 atomic_inc(&dytc_ignore_event); 10472 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10473 if (err) 10474 return err; 10475 } 10476 10477 cmd_err = dytc_command(command, output); 10478 /* Check return condition after we've restored CQL state */ 10479 10480 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10481 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10482 if (err) 10483 return err; 10484 } 10485 return cmd_err; 10486 } 10487 10488 /* 10489 * dytc_profile_set: Function to register with platform_profile 10490 * handler. Sets current platform profile. 10491 */ 10492 static int dytc_profile_set(struct platform_profile_handler *pprof, 10493 enum platform_profile_option profile) 10494 { 10495 int perfmode; 10496 int output; 10497 int err; 10498 10499 err = mutex_lock_interruptible(&dytc_mutex); 10500 if (err) 10501 return err; 10502 10503 err = convert_profile_to_dytc(profile, &perfmode); 10504 if (err) 10505 goto unlock; 10506 10507 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10508 if (profile == PLATFORM_PROFILE_BALANCED) { 10509 /* 10510 * To get back to balanced mode we need to issue a reset command. 10511 * Note we still need to disable CQL mode before hand and re-enable 10512 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10513 * stuck at 0 for aprox. 30 minutes. 10514 */ 10515 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10516 if (err) 10517 goto unlock; 10518 } else { 10519 /* Determine if we are in CQL mode. This alters the commands we do */ 10520 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10521 &output); 10522 if (err) 10523 goto unlock; 10524 } 10525 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10526 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10527 if (err) 10528 goto unlock; 10529 10530 /* system supports AMT, activate it when on balanced */ 10531 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10532 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10533 } 10534 /* Success - update current profile */ 10535 dytc_current_profile = profile; 10536 unlock: 10537 mutex_unlock(&dytc_mutex); 10538 return err; 10539 } 10540 10541 static void dytc_profile_refresh(void) 10542 { 10543 enum platform_profile_option profile; 10544 int output = 0, err = 0; 10545 int perfmode, funcmode = 0; 10546 10547 mutex_lock(&dytc_mutex); 10548 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10549 if (dytc_mmc_get_available) 10550 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10551 else 10552 err = dytc_cql_command(DYTC_CMD_GET, &output); 10553 funcmode = DYTC_FUNCTION_MMC; 10554 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10555 err = dytc_command(DYTC_CMD_GET, &output); 10556 /* Check if we are PSC mode, or have AMT enabled */ 10557 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10558 } else { /* Unknown profile mode */ 10559 err = -ENODEV; 10560 } 10561 mutex_unlock(&dytc_mutex); 10562 if (err) 10563 return; 10564 10565 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10566 err = convert_dytc_to_profile(funcmode, perfmode, &profile); 10567 if (!err && profile != dytc_current_profile) { 10568 dytc_current_profile = profile; 10569 platform_profile_notify(); 10570 } 10571 } 10572 10573 static struct platform_profile_handler dytc_profile = { 10574 .profile_get = dytc_profile_get, 10575 .profile_set = dytc_profile_set, 10576 }; 10577 10578 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10579 { 10580 int err, output; 10581 10582 /* Setup supported modes */ 10583 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10584 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10585 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10586 10587 err = dytc_command(DYTC_CMD_QUERY, &output); 10588 if (err) 10589 return err; 10590 10591 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10592 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10593 10594 /* Check DYTC is enabled and supports mode setting */ 10595 if (dytc_version < 5) 10596 return -ENODEV; 10597 10598 /* Check what capabilities are supported */ 10599 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10600 if (err) 10601 return err; 10602 10603 /* Check if user wants to override the profile selection */ 10604 if (profile_force) { 10605 switch (profile_force) { 10606 case -1: 10607 dytc_capabilities = 0; 10608 break; 10609 case 1: 10610 dytc_capabilities = BIT(DYTC_FC_MMC); 10611 break; 10612 case 2: 10613 dytc_capabilities = BIT(DYTC_FC_PSC); 10614 break; 10615 } 10616 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); 10617 } 10618 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10619 pr_debug("MMC is supported\n"); 10620 /* 10621 * Check if MMC_GET functionality available 10622 * Version > 6 and return success from MMC_GET command 10623 */ 10624 dytc_mmc_get_available = false; 10625 if (dytc_version >= 6) { 10626 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10627 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10628 dytc_mmc_get_available = true; 10629 } 10630 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10631 pr_debug("PSC is supported\n"); 10632 } else { 10633 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10634 return -ENODEV; 10635 } 10636 10637 dbg_printk(TPACPI_DBG_INIT, 10638 "DYTC version %d: thermal mode available\n", dytc_version); 10639 10640 /* Create platform_profile structure and register */ 10641 err = platform_profile_register(&dytc_profile); 10642 /* 10643 * If for some reason platform_profiles aren't enabled 10644 * don't quit terminally. 10645 */ 10646 if (err) 10647 return -ENODEV; 10648 10649 /* Ensure initial values are correct */ 10650 dytc_profile_refresh(); 10651 10652 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10653 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10654 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10655 10656 return 0; 10657 } 10658 10659 static void dytc_profile_exit(void) 10660 { 10661 platform_profile_remove(); 10662 } 10663 10664 static struct ibm_struct dytc_profile_driver_data = { 10665 .name = "dytc-profile", 10666 .exit = dytc_profile_exit, 10667 }; 10668 10669 /************************************************************************* 10670 * Keyboard language interface 10671 */ 10672 10673 struct keyboard_lang_data { 10674 const char *lang_str; 10675 int lang_code; 10676 }; 10677 10678 static const struct keyboard_lang_data keyboard_lang_data[] = { 10679 {"be", 0x080c}, 10680 {"cz", 0x0405}, 10681 {"da", 0x0406}, 10682 {"de", 0x0c07}, 10683 {"en", 0x0000}, 10684 {"es", 0x2c0a}, 10685 {"et", 0x0425}, 10686 {"fr", 0x040c}, 10687 {"fr-ch", 0x100c}, 10688 {"hu", 0x040e}, 10689 {"it", 0x0410}, 10690 {"jp", 0x0411}, 10691 {"nl", 0x0413}, 10692 {"nn", 0x0414}, 10693 {"pl", 0x0415}, 10694 {"pt", 0x0816}, 10695 {"sl", 0x041b}, 10696 {"sv", 0x081d}, 10697 {"tr", 0x041f}, 10698 }; 10699 10700 static int set_keyboard_lang_command(int command) 10701 { 10702 acpi_handle sskl_handle; 10703 int output; 10704 10705 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10706 /* Platform doesn't support SSKL */ 10707 return -ENODEV; 10708 } 10709 10710 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10711 return -EIO; 10712 10713 return 0; 10714 } 10715 10716 static int get_keyboard_lang(int *output) 10717 { 10718 acpi_handle gskl_handle; 10719 int kbd_lang; 10720 10721 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10722 /* Platform doesn't support GSKL */ 10723 return -ENODEV; 10724 } 10725 10726 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10727 return -EIO; 10728 10729 /* 10730 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10731 * '(' and ')') keys which use layout dependent key-press emulation. 10732 */ 10733 if (kbd_lang & METHOD_ERR) 10734 return -ENODEV; 10735 10736 *output = kbd_lang; 10737 10738 return 0; 10739 } 10740 10741 /* sysfs keyboard language entry */ 10742 static ssize_t keyboard_lang_show(struct device *dev, 10743 struct device_attribute *attr, 10744 char *buf) 10745 { 10746 int output, err, i, len = 0; 10747 10748 err = get_keyboard_lang(&output); 10749 if (err) 10750 return err; 10751 10752 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10753 if (i) 10754 len += sysfs_emit_at(buf, len, "%s", " "); 10755 10756 if (output == keyboard_lang_data[i].lang_code) { 10757 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10758 } else { 10759 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10760 } 10761 } 10762 len += sysfs_emit_at(buf, len, "\n"); 10763 10764 return len; 10765 } 10766 10767 static ssize_t keyboard_lang_store(struct device *dev, 10768 struct device_attribute *attr, 10769 const char *buf, size_t count) 10770 { 10771 int err, i; 10772 bool lang_found = false; 10773 int lang_code = 0; 10774 10775 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10776 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10777 lang_code = keyboard_lang_data[i].lang_code; 10778 lang_found = true; 10779 break; 10780 } 10781 } 10782 10783 if (lang_found) { 10784 lang_code = lang_code | 1 << 24; 10785 10786 /* Set language code */ 10787 err = set_keyboard_lang_command(lang_code); 10788 if (err) 10789 return err; 10790 } else { 10791 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10792 return -EINVAL; 10793 } 10794 10795 tpacpi_disclose_usertask(attr->attr.name, 10796 "keyboard language is set to %s\n", buf); 10797 10798 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10799 10800 return count; 10801 } 10802 static DEVICE_ATTR_RW(keyboard_lang); 10803 10804 static struct attribute *kbdlang_attributes[] = { 10805 &dev_attr_keyboard_lang.attr, 10806 NULL 10807 }; 10808 10809 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10810 struct attribute *attr, int n) 10811 { 10812 return tp_features.kbd_lang ? attr->mode : 0; 10813 } 10814 10815 static const struct attribute_group kbdlang_attr_group = { 10816 .is_visible = kbdlang_attr_is_visible, 10817 .attrs = kbdlang_attributes, 10818 }; 10819 10820 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10821 { 10822 int err, output; 10823 10824 err = get_keyboard_lang(&output); 10825 tp_features.kbd_lang = !err; 10826 return err; 10827 } 10828 10829 static struct ibm_struct kbdlang_driver_data = { 10830 .name = "kbdlang", 10831 }; 10832 10833 /************************************************************************* 10834 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10835 * and WLAN feature. 10836 */ 10837 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10838 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10839 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10840 static bool has_antennatype; 10841 static int wwan_antennatype; 10842 10843 static int dprc_command(int command, int *output) 10844 { 10845 acpi_handle dprc_handle; 10846 10847 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10848 /* Platform doesn't support DPRC */ 10849 return -ENODEV; 10850 } 10851 10852 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10853 return -EIO; 10854 10855 /* 10856 * METHOD_ERR gets returned on devices where few commands are not supported 10857 * for example command to get WWAN Antenna type command is not supported on 10858 * some devices. 10859 */ 10860 if (*output & METHOD_ERR) 10861 return -ENODEV; 10862 10863 return 0; 10864 } 10865 10866 static int get_wwan_antenna(int *wwan_antennatype) 10867 { 10868 int output, err; 10869 10870 /* Get current Antenna type */ 10871 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10872 if (err) 10873 return err; 10874 10875 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10876 *wwan_antennatype = 1; 10877 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10878 *wwan_antennatype = 2; 10879 else 10880 return -ENODEV; 10881 10882 return 0; 10883 } 10884 10885 /* sysfs wwan antenna type entry */ 10886 static ssize_t wwan_antenna_type_show(struct device *dev, 10887 struct device_attribute *attr, 10888 char *buf) 10889 { 10890 switch (wwan_antennatype) { 10891 case 1: 10892 return sysfs_emit(buf, "type a\n"); 10893 case 2: 10894 return sysfs_emit(buf, "type b\n"); 10895 default: 10896 return -ENODATA; 10897 } 10898 } 10899 static DEVICE_ATTR_RO(wwan_antenna_type); 10900 10901 static struct attribute *dprc_attributes[] = { 10902 &dev_attr_wwan_antenna_type.attr, 10903 NULL 10904 }; 10905 10906 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10907 struct attribute *attr, int n) 10908 { 10909 return has_antennatype ? attr->mode : 0; 10910 } 10911 10912 static const struct attribute_group dprc_attr_group = { 10913 .is_visible = dprc_attr_is_visible, 10914 .attrs = dprc_attributes, 10915 }; 10916 10917 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10918 { 10919 int err; 10920 10921 err = get_wwan_antenna(&wwan_antennatype); 10922 if (err) 10923 return err; 10924 10925 has_antennatype = true; 10926 return 0; 10927 } 10928 10929 static struct ibm_struct dprc_driver_data = { 10930 .name = "dprc", 10931 }; 10932 10933 /* 10934 * Auxmac 10935 * 10936 * This auxiliary mac address is enabled in the bios through the 10937 * MAC Address Pass-through feature. In most cases, there are three 10938 * possibilities: Internal Mac, Second Mac, and disabled. 10939 * 10940 */ 10941 10942 #define AUXMAC_LEN 12 10943 #define AUXMAC_START 9 10944 #define AUXMAC_STRLEN 22 10945 #define AUXMAC_BEGIN_MARKER 8 10946 #define AUXMAC_END_MARKER 21 10947 10948 static char auxmac[AUXMAC_LEN + 1]; 10949 10950 static int auxmac_init(struct ibm_init_struct *iibm) 10951 { 10952 acpi_status status; 10953 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 10954 union acpi_object *obj; 10955 10956 status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer); 10957 10958 if (ACPI_FAILURE(status)) 10959 return -ENODEV; 10960 10961 obj = buffer.pointer; 10962 10963 if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) { 10964 pr_info("Invalid buffer for MAC address pass-through.\n"); 10965 goto auxmacinvalid; 10966 } 10967 10968 if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' || 10969 obj->string.pointer[AUXMAC_END_MARKER] != '#') { 10970 pr_info("Invalid header for MAC address pass-through.\n"); 10971 goto auxmacinvalid; 10972 } 10973 10974 if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0) 10975 strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac)); 10976 else 10977 strscpy(auxmac, "disabled", sizeof(auxmac)); 10978 10979 free: 10980 kfree(obj); 10981 return 0; 10982 10983 auxmacinvalid: 10984 strscpy(auxmac, "unavailable", sizeof(auxmac)); 10985 goto free; 10986 } 10987 10988 static struct ibm_struct auxmac_data = { 10989 .name = "auxmac", 10990 }; 10991 10992 static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac); 10993 10994 static umode_t auxmac_attr_is_visible(struct kobject *kobj, 10995 struct attribute *attr, int n) 10996 { 10997 return auxmac[0] == 0 ? 0 : attr->mode; 10998 } 10999 11000 static struct attribute *auxmac_attributes[] = { 11001 &dev_attr_auxmac.attr.attr, 11002 NULL 11003 }; 11004 11005 static const struct attribute_group auxmac_attr_group = { 11006 .is_visible = auxmac_attr_is_visible, 11007 .attrs = auxmac_attributes, 11008 }; 11009 11010 /* --------------------------------------------------------------------- */ 11011 11012 static struct attribute *tpacpi_driver_attributes[] = { 11013 &driver_attr_debug_level.attr, 11014 &driver_attr_version.attr, 11015 &driver_attr_interface_version.attr, 11016 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11017 &driver_attr_wlsw_emulstate.attr, 11018 &driver_attr_bluetooth_emulstate.attr, 11019 &driver_attr_wwan_emulstate.attr, 11020 &driver_attr_uwb_emulstate.attr, 11021 #endif 11022 NULL 11023 }; 11024 11025 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11026 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 11027 struct attribute *attr, int n) 11028 { 11029 if (attr == &driver_attr_wlsw_emulstate.attr) { 11030 if (!dbg_wlswemul) 11031 return 0; 11032 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 11033 if (!dbg_bluetoothemul) 11034 return 0; 11035 } else if (attr == &driver_attr_wwan_emulstate.attr) { 11036 if (!dbg_wwanemul) 11037 return 0; 11038 } else if (attr == &driver_attr_uwb_emulstate.attr) { 11039 if (!dbg_uwbemul) 11040 return 0; 11041 } 11042 11043 return attr->mode; 11044 } 11045 #endif 11046 11047 static const struct attribute_group tpacpi_driver_attr_group = { 11048 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11049 .is_visible = tpacpi_attr_is_visible, 11050 #endif 11051 .attrs = tpacpi_driver_attributes, 11052 }; 11053 11054 static const struct attribute_group *tpacpi_driver_groups[] = { 11055 &tpacpi_driver_attr_group, 11056 NULL, 11057 }; 11058 11059 static const struct attribute_group *tpacpi_groups[] = { 11060 &adaptive_kbd_attr_group, 11061 &hotkey_attr_group, 11062 &bluetooth_attr_group, 11063 &wan_attr_group, 11064 &cmos_attr_group, 11065 &proxsensor_attr_group, 11066 &kbdlang_attr_group, 11067 &dprc_attr_group, 11068 &auxmac_attr_group, 11069 NULL, 11070 }; 11071 11072 static const struct attribute_group *tpacpi_hwmon_groups[] = { 11073 &thermal_attr_group, 11074 &temp_label_attr_group, 11075 &fan_attr_group, 11076 NULL, 11077 }; 11078 11079 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 11080 &fan_driver_attr_group, 11081 NULL, 11082 }; 11083 11084 /**************************************************************************** 11085 **************************************************************************** 11086 * 11087 * Platform drivers 11088 * 11089 **************************************************************************** 11090 ****************************************************************************/ 11091 11092 static struct platform_driver tpacpi_pdriver = { 11093 .driver = { 11094 .name = TPACPI_DRVR_NAME, 11095 .pm = &tpacpi_pm, 11096 .groups = tpacpi_driver_groups, 11097 .dev_groups = tpacpi_groups, 11098 }, 11099 .shutdown = tpacpi_shutdown_handler, 11100 }; 11101 11102 static struct platform_driver tpacpi_hwmon_pdriver = { 11103 .driver = { 11104 .name = TPACPI_HWMON_DRVR_NAME, 11105 .groups = tpacpi_hwmon_driver_groups, 11106 }, 11107 }; 11108 11109 /**************************************************************************** 11110 **************************************************************************** 11111 * 11112 * Infrastructure 11113 * 11114 **************************************************************************** 11115 ****************************************************************************/ 11116 11117 /* 11118 * HKEY event callout for other subdrivers go here 11119 * (yes, it is ugly, but it is quick, safe, and gets the job done 11120 */ 11121 static bool tpacpi_driver_event(const unsigned int hkey_event) 11122 { 11123 switch (hkey_event) { 11124 case TP_HKEY_EV_BRGHT_UP: 11125 case TP_HKEY_EV_BRGHT_DOWN: 11126 if (ibm_backlight_device) 11127 tpacpi_brightness_notify_change(); 11128 /* 11129 * Key press events are suppressed by default hotkey_user_mask 11130 * and should still be reported if explicitly requested. 11131 */ 11132 return false; 11133 case TP_HKEY_EV_VOL_UP: 11134 case TP_HKEY_EV_VOL_DOWN: 11135 case TP_HKEY_EV_VOL_MUTE: 11136 if (alsa_card) 11137 volume_alsa_notify_change(); 11138 11139 /* Key events are suppressed by default hotkey_user_mask */ 11140 return false; 11141 case TP_HKEY_EV_KBD_LIGHT: 11142 if (tp_features.kbdlight) { 11143 enum led_brightness brightness; 11144 11145 mutex_lock(&kbdlight_mutex); 11146 11147 /* 11148 * Check the brightness actually changed, setting the brightness 11149 * through kbdlight_set_level() also triggers this event. 11150 */ 11151 brightness = kbdlight_sysfs_get(NULL); 11152 if (kbdlight_brightness != brightness) { 11153 kbdlight_brightness = brightness; 11154 led_classdev_notify_brightness_hw_changed( 11155 &tpacpi_led_kbdlight.led_classdev, brightness); 11156 } 11157 11158 mutex_unlock(&kbdlight_mutex); 11159 } 11160 /* Key events are suppressed by default hotkey_user_mask */ 11161 return false; 11162 case TP_HKEY_EV_DFR_CHANGE_ROW: 11163 adaptive_keyboard_change_row(); 11164 return true; 11165 case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW: 11166 adaptive_keyboard_s_quickview_row(); 11167 return true; 11168 case TP_HKEY_EV_THM_CSM_COMPLETED: 11169 lapsensor_refresh(); 11170 /* If we are already accessing DYTC then skip dytc update */ 11171 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11172 dytc_profile_refresh(); 11173 11174 return true; 11175 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 11176 if (lcdshadow_dev) { 11177 enum drm_privacy_screen_status old_hw_state; 11178 bool changed; 11179 11180 mutex_lock(&lcdshadow_dev->lock); 11181 old_hw_state = lcdshadow_dev->hw_state; 11182 lcdshadow_get_hw_state(lcdshadow_dev); 11183 changed = lcdshadow_dev->hw_state != old_hw_state; 11184 mutex_unlock(&lcdshadow_dev->lock); 11185 11186 if (changed) 11187 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11188 } 11189 return true; 11190 case TP_HKEY_EV_AMT_TOGGLE: 11191 /* If we're enabling AMT we need to force balanced mode */ 11192 if (!dytc_amt_active) 11193 /* This will also set AMT mode enabled */ 11194 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11195 else 11196 dytc_control_amt(!dytc_amt_active); 11197 11198 return true; 11199 case TP_HKEY_EV_DOUBLETAP_TOGGLE: 11200 tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap; 11201 return true; 11202 case TP_HKEY_EV_PROFILE_TOGGLE: 11203 platform_profile_cycle(); 11204 return true; 11205 } 11206 11207 return false; 11208 } 11209 11210 /* --------------------------------------------------------------------- */ 11211 11212 /* /proc support */ 11213 static struct proc_dir_entry *proc_dir; 11214 11215 /* 11216 * Module and infrastructure proble, init and exit handling 11217 */ 11218 11219 static bool force_load; 11220 11221 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 11222 static const char * __init str_supported(int is_supported) 11223 { 11224 static char text_unsupported[] __initdata = "not supported"; 11225 11226 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11227 } 11228 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11229 11230 static void ibm_exit(struct ibm_struct *ibm) 11231 { 11232 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11233 11234 list_del_init(&ibm->all_drivers); 11235 11236 if (ibm->flags.acpi_notify_installed) { 11237 dbg_printk(TPACPI_DBG_EXIT, 11238 "%s: acpi_remove_notify_handler\n", ibm->name); 11239 BUG_ON(!ibm->acpi); 11240 acpi_remove_notify_handler(*ibm->acpi->handle, 11241 ibm->acpi->type, 11242 dispatch_acpi_notify); 11243 ibm->flags.acpi_notify_installed = 0; 11244 } 11245 11246 if (ibm->flags.proc_created) { 11247 dbg_printk(TPACPI_DBG_EXIT, 11248 "%s: remove_proc_entry\n", ibm->name); 11249 remove_proc_entry(ibm->name, proc_dir); 11250 ibm->flags.proc_created = 0; 11251 } 11252 11253 if (ibm->flags.acpi_driver_registered) { 11254 dbg_printk(TPACPI_DBG_EXIT, 11255 "%s: acpi_bus_unregister_driver\n", ibm->name); 11256 BUG_ON(!ibm->acpi); 11257 acpi_bus_unregister_driver(ibm->acpi->driver); 11258 kfree(ibm->acpi->driver); 11259 ibm->acpi->driver = NULL; 11260 ibm->flags.acpi_driver_registered = 0; 11261 } 11262 11263 if (ibm->flags.init_called && ibm->exit) { 11264 ibm->exit(); 11265 ibm->flags.init_called = 0; 11266 } 11267 11268 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11269 } 11270 11271 static int __init ibm_init(struct ibm_init_struct *iibm) 11272 { 11273 int ret; 11274 struct ibm_struct *ibm = iibm->data; 11275 struct proc_dir_entry *entry; 11276 11277 BUG_ON(ibm == NULL); 11278 11279 INIT_LIST_HEAD(&ibm->all_drivers); 11280 11281 if (ibm->flags.experimental && !experimental) 11282 return 0; 11283 11284 dbg_printk(TPACPI_DBG_INIT, 11285 "probing for %s\n", ibm->name); 11286 11287 if (iibm->init) { 11288 ret = iibm->init(iibm); 11289 if (ret > 0 || ret == -ENODEV) 11290 return 0; /* subdriver functionality not available */ 11291 if (ret) 11292 return ret; 11293 11294 ibm->flags.init_called = 1; 11295 } 11296 11297 if (ibm->acpi) { 11298 if (ibm->acpi->hid) { 11299 ret = register_tpacpi_subdriver(ibm); 11300 if (ret) 11301 goto err_out; 11302 } 11303 11304 if (ibm->acpi->notify) { 11305 ret = setup_acpi_notify(ibm); 11306 if (ret == -ENODEV) { 11307 pr_notice("disabling subdriver %s\n", 11308 ibm->name); 11309 ret = 0; 11310 goto err_out; 11311 } 11312 if (ret < 0) 11313 goto err_out; 11314 } 11315 } 11316 11317 dbg_printk(TPACPI_DBG_INIT, 11318 "%s installed\n", ibm->name); 11319 11320 if (ibm->read) { 11321 umode_t mode = iibm->base_procfs_mode; 11322 11323 if (!mode) 11324 mode = S_IRUGO; 11325 if (ibm->write) 11326 mode |= S_IWUSR; 11327 entry = proc_create_data(ibm->name, mode, proc_dir, 11328 &dispatch_proc_ops, ibm); 11329 if (!entry) { 11330 pr_err("unable to create proc entry %s\n", ibm->name); 11331 ret = -ENODEV; 11332 goto err_out; 11333 } 11334 ibm->flags.proc_created = 1; 11335 } 11336 11337 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11338 11339 return 0; 11340 11341 err_out: 11342 dbg_printk(TPACPI_DBG_INIT, 11343 "%s: at error exit path with result %d\n", 11344 ibm->name, ret); 11345 11346 ibm_exit(ibm); 11347 return (ret < 0) ? ret : 0; 11348 } 11349 11350 /* Probing */ 11351 11352 static char __init tpacpi_parse_fw_id(const char * const s, 11353 u32 *model, u16 *release) 11354 { 11355 int i; 11356 11357 if (!s || strlen(s) < 8) 11358 goto invalid; 11359 11360 for (i = 0; i < 8; i++) 11361 if (!((s[i] >= '0' && s[i] <= '9') || 11362 (s[i] >= 'A' && s[i] <= 'Z'))) 11363 goto invalid; 11364 11365 /* 11366 * Most models: xxyTkkWW (#.##c) 11367 * Ancient 570/600 and -SL lacks (#.##c) 11368 */ 11369 if (s[3] == 'T' || s[3] == 'N') { 11370 *model = TPID(s[0], s[1]); 11371 *release = TPVER(s[4], s[5]); 11372 return s[2]; 11373 11374 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11375 } else if (s[4] == 'T' || s[4] == 'N') { 11376 *model = TPID3(s[0], s[1], s[2]); 11377 *release = TPVER(s[5], s[6]); 11378 return s[3]; 11379 } 11380 11381 invalid: 11382 return '\0'; 11383 } 11384 11385 #define EC_FW_STRING_LEN 18 11386 11387 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11388 { 11389 char *ec_fw_string = (char *) private; 11390 const char *dmi_data = (const char *)dm; 11391 /* 11392 * ThinkPad Embedded Controller Program Table on newer models 11393 * 11394 * Offset | Name | Width | Description 11395 * ---------------------------------------------------- 11396 * 0x00 | Type | BYTE | 0x8C 11397 * 0x01 | Length | BYTE | 11398 * 0x02 | Handle | WORD | Varies 11399 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11400 * 0x0A | OEM struct offset | BYTE | 0x0B 11401 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11402 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11403 * 0x0D | ECP version ID | STR ID | 11404 * 0x0E | ECP release date | STR ID | 11405 */ 11406 11407 /* Return if data structure not match */ 11408 if (dm->type != 140 || dm->length < 0x0F || 11409 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11410 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11411 dmi_data[0x0C] != 0x01) 11412 return; 11413 11414 /* fwstr is the first 8byte string */ 11415 BUILD_BUG_ON(EC_FW_STRING_LEN <= 8); 11416 memcpy(ec_fw_string, dmi_data + 0x0F, 8); 11417 } 11418 11419 /* returns 0 - probe ok, or < 0 - probe error. 11420 * Probe ok doesn't mean thinkpad found. 11421 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11422 static int __must_check __init get_thinkpad_model_data( 11423 struct thinkpad_id_data *tp) 11424 { 11425 const struct dmi_device *dev = NULL; 11426 char ec_fw_string[EC_FW_STRING_LEN] = {0}; 11427 char const *s; 11428 char t; 11429 11430 if (!tp) 11431 return -EINVAL; 11432 11433 memset(tp, 0, sizeof(*tp)); 11434 11435 if (dmi_name_in_vendors("IBM")) 11436 tp->vendor = PCI_VENDOR_ID_IBM; 11437 else if (dmi_name_in_vendors("LENOVO")) 11438 tp->vendor = PCI_VENDOR_ID_LENOVO; 11439 else 11440 return 0; 11441 11442 s = dmi_get_system_info(DMI_BIOS_VERSION); 11443 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11444 if (s && !tp->bios_version_str) 11445 return -ENOMEM; 11446 11447 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11448 t = tpacpi_parse_fw_id(tp->bios_version_str, 11449 &tp->bios_model, &tp->bios_release); 11450 if (t != 'E' && t != 'C') 11451 return 0; 11452 11453 /* 11454 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11455 * X32 or newer, all Z series; Some models must have an 11456 * up-to-date BIOS or they will not be detected. 11457 * 11458 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11459 */ 11460 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11461 if (sscanf(dev->name, 11462 "IBM ThinkPad Embedded Controller -[%17c", 11463 ec_fw_string) == 1) { 11464 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11465 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11466 break; 11467 } 11468 } 11469 11470 /* Newer ThinkPads have different EC program info table */ 11471 if (!ec_fw_string[0]) 11472 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11473 11474 if (ec_fw_string[0]) { 11475 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11476 if (!tp->ec_version_str) 11477 return -ENOMEM; 11478 11479 t = tpacpi_parse_fw_id(ec_fw_string, 11480 &tp->ec_model, &tp->ec_release); 11481 if (t != 'H') { 11482 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11483 ec_fw_string); 11484 pr_notice("please report this to %s\n", TPACPI_MAIL); 11485 } 11486 } 11487 11488 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11489 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11490 tp->model_str = kstrdup(s, GFP_KERNEL); 11491 if (!tp->model_str) 11492 return -ENOMEM; 11493 } else { 11494 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11495 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11496 tp->model_str = kstrdup(s, GFP_KERNEL); 11497 if (!tp->model_str) 11498 return -ENOMEM; 11499 } 11500 } 11501 11502 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11503 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11504 if (s && !tp->nummodel_str) 11505 return -ENOMEM; 11506 11507 return 0; 11508 } 11509 11510 static int __init probe_for_thinkpad(void) 11511 { 11512 int is_thinkpad; 11513 11514 if (acpi_disabled) 11515 return -ENODEV; 11516 11517 /* It would be dangerous to run the driver in this case */ 11518 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11519 return -ENODEV; 11520 11521 /* 11522 * Non-ancient models have better DMI tagging, but very old models 11523 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11524 */ 11525 is_thinkpad = (thinkpad_id.model_str != NULL) || 11526 (thinkpad_id.ec_model != 0) || 11527 tpacpi_is_fw_known(); 11528 11529 /* The EC handler is required */ 11530 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11531 if (!ec_handle) { 11532 if (is_thinkpad) 11533 pr_err("Not yet supported ThinkPad detected!\n"); 11534 return -ENODEV; 11535 } 11536 11537 if (!is_thinkpad && !force_load) 11538 return -ENODEV; 11539 11540 return 0; 11541 } 11542 11543 static void __init thinkpad_acpi_init_banner(void) 11544 { 11545 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11546 pr_info("%s\n", TPACPI_URL); 11547 11548 pr_info("ThinkPad BIOS %s, EC %s\n", 11549 (thinkpad_id.bios_version_str) ? 11550 thinkpad_id.bios_version_str : "unknown", 11551 (thinkpad_id.ec_version_str) ? 11552 thinkpad_id.ec_version_str : "unknown"); 11553 11554 BUG_ON(!thinkpad_id.vendor); 11555 11556 if (thinkpad_id.model_str) 11557 pr_info("%s %s, model %s\n", 11558 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11559 "IBM" : ((thinkpad_id.vendor == 11560 PCI_VENDOR_ID_LENOVO) ? 11561 "Lenovo" : "Unknown vendor"), 11562 thinkpad_id.model_str, 11563 (thinkpad_id.nummodel_str) ? 11564 thinkpad_id.nummodel_str : "unknown"); 11565 } 11566 11567 /* Module init, exit, parameters */ 11568 11569 static struct ibm_init_struct ibms_init[] __initdata = { 11570 { 11571 .data = &thinkpad_acpi_driver_data, 11572 }, 11573 { 11574 .init = hotkey_init, 11575 .data = &hotkey_driver_data, 11576 }, 11577 { 11578 .init = bluetooth_init, 11579 .data = &bluetooth_driver_data, 11580 }, 11581 { 11582 .init = wan_init, 11583 .data = &wan_driver_data, 11584 }, 11585 { 11586 .init = uwb_init, 11587 .data = &uwb_driver_data, 11588 }, 11589 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11590 { 11591 .init = video_init, 11592 .base_procfs_mode = S_IRUSR, 11593 .data = &video_driver_data, 11594 }, 11595 #endif 11596 { 11597 .init = kbdlight_init, 11598 .data = &kbdlight_driver_data, 11599 }, 11600 { 11601 .init = light_init, 11602 .data = &light_driver_data, 11603 }, 11604 { 11605 .init = cmos_init, 11606 .data = &cmos_driver_data, 11607 }, 11608 { 11609 .init = led_init, 11610 .data = &led_driver_data, 11611 }, 11612 { 11613 .init = beep_init, 11614 .data = &beep_driver_data, 11615 }, 11616 { 11617 .init = thermal_init, 11618 .data = &thermal_driver_data, 11619 }, 11620 { 11621 .init = brightness_init, 11622 .data = &brightness_driver_data, 11623 }, 11624 { 11625 .init = volume_init, 11626 .data = &volume_driver_data, 11627 }, 11628 { 11629 .init = fan_init, 11630 .data = &fan_driver_data, 11631 }, 11632 { 11633 .init = mute_led_init, 11634 .data = &mute_led_driver_data, 11635 }, 11636 { 11637 .init = tpacpi_battery_init, 11638 .data = &battery_driver_data, 11639 }, 11640 { 11641 .init = tpacpi_lcdshadow_init, 11642 .data = &lcdshadow_driver_data, 11643 }, 11644 { 11645 .init = tpacpi_proxsensor_init, 11646 .data = &proxsensor_driver_data, 11647 }, 11648 { 11649 .init = tpacpi_dytc_profile_init, 11650 .data = &dytc_profile_driver_data, 11651 }, 11652 { 11653 .init = tpacpi_kbdlang_init, 11654 .data = &kbdlang_driver_data, 11655 }, 11656 { 11657 .init = tpacpi_dprc_init, 11658 .data = &dprc_driver_data, 11659 }, 11660 { 11661 .init = auxmac_init, 11662 .data = &auxmac_data, 11663 }, 11664 }; 11665 11666 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11667 { 11668 unsigned int i; 11669 struct ibm_struct *ibm; 11670 11671 if (!kp || !kp->name || !val) 11672 return -EINVAL; 11673 11674 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11675 ibm = ibms_init[i].data; 11676 if (!ibm || !ibm->name) 11677 continue; 11678 11679 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11680 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11681 return -ENOSPC; 11682 strcpy(ibms_init[i].param, val); 11683 return 0; 11684 } 11685 } 11686 11687 return -EINVAL; 11688 } 11689 11690 module_param(experimental, int, 0444); 11691 MODULE_PARM_DESC(experimental, 11692 "Enables experimental features when non-zero"); 11693 11694 module_param_named(debug, dbg_level, uint, 0); 11695 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11696 11697 module_param(force_load, bool, 0444); 11698 MODULE_PARM_DESC(force_load, 11699 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11700 11701 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11702 MODULE_PARM_DESC(fan_control, 11703 "Enables setting fan parameters features when true"); 11704 11705 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11706 MODULE_PARM_DESC(brightness_mode, 11707 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11708 11709 module_param(brightness_enable, uint, 0444); 11710 MODULE_PARM_DESC(brightness_enable, 11711 "Enables backlight control when 1, disables when 0"); 11712 11713 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11714 module_param_named(volume_mode, volume_mode, uint, 0444); 11715 MODULE_PARM_DESC(volume_mode, 11716 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11717 11718 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11719 MODULE_PARM_DESC(volume_capabilities, 11720 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11721 11722 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11723 MODULE_PARM_DESC(volume_control, 11724 "Enables software override for the console audio control when true"); 11725 11726 module_param_named(software_mute, software_mute_requested, bool, 0444); 11727 MODULE_PARM_DESC(software_mute, 11728 "Request full software mute control"); 11729 11730 /* ALSA module API parameters */ 11731 module_param_named(index, alsa_index, int, 0444); 11732 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11733 module_param_named(id, alsa_id, charp, 0444); 11734 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11735 module_param_named(enable, alsa_enable, bool, 0444); 11736 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11737 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11738 11739 /* The module parameter can't be read back, that's why 0 is used here */ 11740 #define TPACPI_PARAM(feature) \ 11741 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11742 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11743 11744 TPACPI_PARAM(hotkey); 11745 TPACPI_PARAM(bluetooth); 11746 TPACPI_PARAM(video); 11747 TPACPI_PARAM(light); 11748 TPACPI_PARAM(cmos); 11749 TPACPI_PARAM(led); 11750 TPACPI_PARAM(beep); 11751 TPACPI_PARAM(brightness); 11752 TPACPI_PARAM(volume); 11753 TPACPI_PARAM(fan); 11754 11755 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11756 module_param(dbg_wlswemul, uint, 0444); 11757 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11758 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11759 MODULE_PARM_DESC(wlsw_state, 11760 "Initial state of the emulated WLSW switch"); 11761 11762 module_param(dbg_bluetoothemul, uint, 0444); 11763 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11764 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11765 MODULE_PARM_DESC(bluetooth_state, 11766 "Initial state of the emulated bluetooth switch"); 11767 11768 module_param(dbg_wwanemul, uint, 0444); 11769 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11770 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11771 MODULE_PARM_DESC(wwan_state, 11772 "Initial state of the emulated WWAN switch"); 11773 11774 module_param(dbg_uwbemul, uint, 0444); 11775 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11776 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11777 MODULE_PARM_DESC(uwb_state, 11778 "Initial state of the emulated UWB switch"); 11779 #endif 11780 11781 module_param(profile_force, int, 0444); 11782 MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); 11783 11784 static void thinkpad_acpi_module_exit(void) 11785 { 11786 struct ibm_struct *ibm, *itmp; 11787 11788 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11789 11790 if (tpacpi_hwmon) 11791 hwmon_device_unregister(tpacpi_hwmon); 11792 if (tp_features.sensors_pdrv_registered) 11793 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11794 if (tp_features.platform_drv_registered) 11795 platform_driver_unregister(&tpacpi_pdriver); 11796 11797 list_for_each_entry_safe_reverse(ibm, itmp, 11798 &tpacpi_all_drivers, 11799 all_drivers) { 11800 ibm_exit(ibm); 11801 } 11802 11803 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11804 11805 if (tpacpi_inputdev) { 11806 if (tp_features.input_device_registered) 11807 input_unregister_device(tpacpi_inputdev); 11808 else 11809 input_free_device(tpacpi_inputdev); 11810 } 11811 11812 if (tpacpi_sensors_pdev) 11813 platform_device_unregister(tpacpi_sensors_pdev); 11814 if (tpacpi_pdev) 11815 platform_device_unregister(tpacpi_pdev); 11816 if (proc_dir) 11817 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11818 if (tpacpi_wq) 11819 destroy_workqueue(tpacpi_wq); 11820 11821 kfree(thinkpad_id.bios_version_str); 11822 kfree(thinkpad_id.ec_version_str); 11823 kfree(thinkpad_id.model_str); 11824 kfree(thinkpad_id.nummodel_str); 11825 } 11826 11827 11828 static int __init thinkpad_acpi_module_init(void) 11829 { 11830 const struct dmi_system_id *dmi_id; 11831 int ret, i; 11832 acpi_object_type obj_type; 11833 11834 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11835 11836 /* Driver-level probe */ 11837 11838 ret = get_thinkpad_model_data(&thinkpad_id); 11839 if (ret) { 11840 pr_err("unable to get DMI data: %d\n", ret); 11841 thinkpad_acpi_module_exit(); 11842 return ret; 11843 } 11844 ret = probe_for_thinkpad(); 11845 if (ret) { 11846 thinkpad_acpi_module_exit(); 11847 return ret; 11848 } 11849 11850 /* Driver initialization */ 11851 11852 thinkpad_acpi_init_banner(); 11853 tpacpi_check_outdated_fw(); 11854 11855 TPACPI_ACPIHANDLE_INIT(ecrd); 11856 TPACPI_ACPIHANDLE_INIT(ecwr); 11857 11858 /* 11859 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD 11860 * exists, but it is a register, not a method. 11861 */ 11862 if (ecrd_handle) { 11863 acpi_get_type(ecrd_handle, &obj_type); 11864 if (obj_type != ACPI_TYPE_METHOD) 11865 ecrd_handle = NULL; 11866 } 11867 if (ecwr_handle) { 11868 acpi_get_type(ecwr_handle, &obj_type); 11869 if (obj_type != ACPI_TYPE_METHOD) 11870 ecwr_handle = NULL; 11871 } 11872 11873 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11874 if (!tpacpi_wq) { 11875 thinkpad_acpi_module_exit(); 11876 return -ENOMEM; 11877 } 11878 11879 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11880 if (!proc_dir) { 11881 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11882 thinkpad_acpi_module_exit(); 11883 return -ENODEV; 11884 } 11885 11886 dmi_id = dmi_first_match(fwbug_list); 11887 if (dmi_id) 11888 tp_features.quirks = dmi_id->driver_data; 11889 11890 /* Device initialization */ 11891 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 11892 NULL, 0); 11893 if (IS_ERR(tpacpi_pdev)) { 11894 ret = PTR_ERR(tpacpi_pdev); 11895 tpacpi_pdev = NULL; 11896 pr_err("unable to register platform device\n"); 11897 thinkpad_acpi_module_exit(); 11898 return ret; 11899 } 11900 tpacpi_sensors_pdev = platform_device_register_simple( 11901 TPACPI_HWMON_DRVR_NAME, 11902 PLATFORM_DEVID_NONE, NULL, 0); 11903 if (IS_ERR(tpacpi_sensors_pdev)) { 11904 ret = PTR_ERR(tpacpi_sensors_pdev); 11905 tpacpi_sensors_pdev = NULL; 11906 pr_err("unable to register hwmon platform device\n"); 11907 thinkpad_acpi_module_exit(); 11908 return ret; 11909 } 11910 11911 mutex_init(&tpacpi_inputdev_send_mutex); 11912 tpacpi_inputdev = input_allocate_device(); 11913 if (!tpacpi_inputdev) { 11914 thinkpad_acpi_module_exit(); 11915 return -ENOMEM; 11916 } else { 11917 /* Prepare input device, but don't register */ 11918 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11919 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11920 tpacpi_inputdev->id.bustype = BUS_HOST; 11921 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11922 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11923 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11924 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11925 } 11926 11927 /* Init subdriver dependencies */ 11928 tpacpi_detect_brightness_capabilities(); 11929 11930 /* Init subdrivers */ 11931 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11932 ret = ibm_init(&ibms_init[i]); 11933 if (ret >= 0 && *ibms_init[i].param) 11934 ret = ibms_init[i].data->write(ibms_init[i].param); 11935 if (ret < 0) { 11936 thinkpad_acpi_module_exit(); 11937 return ret; 11938 } 11939 } 11940 11941 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11942 11943 ret = platform_driver_register(&tpacpi_pdriver); 11944 if (ret) { 11945 pr_err("unable to register main platform driver\n"); 11946 thinkpad_acpi_module_exit(); 11947 return ret; 11948 } 11949 tp_features.platform_drv_registered = 1; 11950 11951 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11952 if (ret) { 11953 pr_err("unable to register hwmon platform driver\n"); 11954 thinkpad_acpi_module_exit(); 11955 return ret; 11956 } 11957 tp_features.sensors_pdrv_registered = 1; 11958 11959 tpacpi_hwmon = hwmon_device_register_with_groups( 11960 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups); 11961 if (IS_ERR(tpacpi_hwmon)) { 11962 ret = PTR_ERR(tpacpi_hwmon); 11963 tpacpi_hwmon = NULL; 11964 pr_err("unable to register hwmon device\n"); 11965 thinkpad_acpi_module_exit(); 11966 return ret; 11967 } 11968 11969 ret = input_register_device(tpacpi_inputdev); 11970 if (ret < 0) { 11971 pr_err("unable to register input device\n"); 11972 thinkpad_acpi_module_exit(); 11973 return ret; 11974 } else { 11975 tp_features.input_device_registered = 1; 11976 } 11977 11978 return 0; 11979 } 11980 11981 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11982 11983 /* 11984 * This will autoload the driver in almost every ThinkPad 11985 * in widespread use. 11986 * 11987 * Only _VERY_ old models, like the 240, 240x and 570 lack 11988 * the HKEY event interface. 11989 */ 11990 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11991 11992 /* 11993 * DMI matching for module autoloading 11994 * 11995 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11996 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11997 * 11998 * Only models listed in thinkwiki will be supported, so add yours 11999 * if it is not there yet. 12000 */ 12001 #define IBM_BIOS_MODULE_ALIAS(__type) \ 12002 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 12003 12004 /* Ancient thinkpad BIOSes have to be identified by 12005 * BIOS type or model number, and there are far less 12006 * BIOS types than model numbers... */ 12007 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 12008 12009 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 12010 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 12011 MODULE_DESCRIPTION(TPACPI_DESC); 12012 MODULE_VERSION(TPACPI_VERSION); 12013 MODULE_LICENSE("GPL"); 12014 12015 module_init(thinkpad_acpi_module_init); 12016 module_exit(thinkpad_acpi_module_exit); 12017