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/kernel.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/types.h> 41 #include <linux/string.h> 42 #include <linux/list.h> 43 #include <linux/mutex.h> 44 #include <linux/sched.h> 45 #include <linux/sched/signal.h> 46 #include <linux/kthread.h> 47 #include <linux/freezer.h> 48 #include <linux/delay.h> 49 #include <linux/slab.h> 50 #include <linux/nvram.h> 51 #include <linux/proc_fs.h> 52 #include <linux/seq_file.h> 53 #include <linux/sysfs.h> 54 #include <linux/backlight.h> 55 #include <linux/bitops.h> 56 #include <linux/fb.h> 57 #include <linux/platform_device.h> 58 #include <linux/hwmon.h> 59 #include <linux/hwmon-sysfs.h> 60 #include <linux/input.h> 61 #include <linux/leds.h> 62 #include <linux/rfkill.h> 63 #include <linux/dmi.h> 64 #include <linux/jiffies.h> 65 #include <linux/workqueue.h> 66 #include <linux/acpi.h> 67 #include <linux/pci.h> 68 #include <linux/power_supply.h> 69 #include <linux/platform_profile.h> 70 #include <sound/core.h> 71 #include <sound/control.h> 72 #include <sound/initval.h> 73 #include <linux/uaccess.h> 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 77 /* ThinkPad CMOS commands */ 78 #define TP_CMOS_VOLUME_DOWN 0 79 #define TP_CMOS_VOLUME_UP 1 80 #define TP_CMOS_VOLUME_MUTE 2 81 #define TP_CMOS_BRIGHTNESS_UP 4 82 #define TP_CMOS_BRIGHTNESS_DOWN 5 83 #define TP_CMOS_THINKLIGHT_ON 12 84 #define TP_CMOS_THINKLIGHT_OFF 13 85 86 /* NVRAM Addresses */ 87 enum tp_nvram_addr { 88 TP_NVRAM_ADDR_HK2 = 0x57, 89 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 90 TP_NVRAM_ADDR_VIDEO = 0x59, 91 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 92 TP_NVRAM_ADDR_MIXER = 0x60, 93 }; 94 95 /* NVRAM bit masks */ 96 enum { 97 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 98 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 99 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 100 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 101 TP_NVRAM_MASK_THINKLIGHT = 0x10, 102 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 103 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 104 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 105 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 106 TP_NVRAM_MASK_MUTE = 0x40, 107 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 108 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 109 TP_NVRAM_POS_LEVEL_VOLUME = 0, 110 }; 111 112 /* Misc NVRAM-related */ 113 enum { 114 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 115 }; 116 117 /* ACPI HIDs */ 118 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 119 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 120 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 121 #define TPACPI_ACPI_EC_HID "PNP0C09" 122 123 /* Input IDs */ 124 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 125 #define TPACPI_HKEY_INPUT_VERSION 0x4101 126 127 /* ACPI \WGSV commands */ 128 enum { 129 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 130 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 131 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 132 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 133 }; 134 135 /* TP_ACPI_WGSV_GET_STATE bits */ 136 enum { 137 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 138 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 139 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 140 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 141 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 142 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 143 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 144 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 145 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 146 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 147 }; 148 149 /* HKEY events */ 150 enum tpacpi_hkey_event_t { 151 /* Hotkey-related */ 152 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 153 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 154 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 155 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 156 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 157 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 158 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 159 160 /* Reasons for waking up from S3/S4 */ 161 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 162 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 163 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 164 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 165 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 166 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 167 168 /* Auto-sleep after eject request */ 169 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 170 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 171 172 /* Misc bay events */ 173 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 174 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 175 or port replicator */ 176 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 177 dock or port replicator */ 178 179 /* User-interface events */ 180 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 181 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 182 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 183 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 184 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 185 * enter/leave tablet mode 186 */ 187 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 188 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 189 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 190 191 /* Key-related user-interface events */ 192 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 193 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 194 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 195 196 /* Thermal events */ 197 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 198 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 199 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 200 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 201 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 202 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 203 * command completed. Related to 204 * AML DYTC */ 205 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 206 * changed. Related to AML GMTS */ 207 208 /* AC-related events */ 209 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 210 211 /* Further user-interface events */ 212 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 213 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 214 215 /* Misc */ 216 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 217 }; 218 219 /**************************************************************************** 220 * Main driver 221 */ 222 223 #define TPACPI_NAME "thinkpad" 224 #define TPACPI_DESC "ThinkPad ACPI Extras" 225 #define TPACPI_FILE TPACPI_NAME "_acpi" 226 #define TPACPI_URL "http://ibm-acpi.sf.net/" 227 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 228 229 #define TPACPI_PROC_DIR "ibm" 230 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 231 #define TPACPI_DRVR_NAME TPACPI_FILE 232 #define TPACPI_DRVR_SHORTNAME "tpacpi" 233 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 234 235 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 236 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 237 238 #define TPACPI_MAX_ACPI_ARGS 3 239 240 /* Debugging printk groups */ 241 #define TPACPI_DBG_ALL 0xffff 242 #define TPACPI_DBG_DISCLOSETASK 0x8000 243 #define TPACPI_DBG_INIT 0x0001 244 #define TPACPI_DBG_EXIT 0x0002 245 #define TPACPI_DBG_RFKILL 0x0004 246 #define TPACPI_DBG_HKEY 0x0008 247 #define TPACPI_DBG_FAN 0x0010 248 #define TPACPI_DBG_BRGHT 0x0020 249 #define TPACPI_DBG_MIXER 0x0040 250 251 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 252 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 253 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 254 255 256 /**************************************************************************** 257 * Driver-wide structs and misc. variables 258 */ 259 260 struct ibm_struct; 261 262 struct tp_acpi_drv_struct { 263 const struct acpi_device_id *hid; 264 struct acpi_driver *driver; 265 266 void (*notify) (struct ibm_struct *, u32); 267 acpi_handle *handle; 268 u32 type; 269 struct acpi_device *device; 270 }; 271 272 struct ibm_struct { 273 char *name; 274 275 int (*read) (struct seq_file *); 276 int (*write) (char *); 277 void (*exit) (void); 278 void (*resume) (void); 279 void (*suspend) (void); 280 void (*shutdown) (void); 281 282 struct list_head all_drivers; 283 284 struct tp_acpi_drv_struct *acpi; 285 286 struct { 287 u8 acpi_driver_registered:1; 288 u8 acpi_notify_installed:1; 289 u8 proc_created:1; 290 u8 init_called:1; 291 u8 experimental:1; 292 } flags; 293 }; 294 295 struct ibm_init_struct { 296 char param[32]; 297 298 int (*init) (struct ibm_init_struct *); 299 umode_t base_procfs_mode; 300 struct ibm_struct *data; 301 }; 302 303 static struct { 304 u32 bluetooth:1; 305 u32 hotkey:1; 306 u32 hotkey_mask:1; 307 u32 hotkey_wlsw:1; 308 enum { 309 TP_HOTKEY_TABLET_NONE = 0, 310 TP_HOTKEY_TABLET_USES_MHKG, 311 TP_HOTKEY_TABLET_USES_GMMS, 312 } hotkey_tablet; 313 u32 kbdlight:1; 314 u32 light:1; 315 u32 light_status:1; 316 u32 bright_acpimode:1; 317 u32 bright_unkfw:1; 318 u32 wan:1; 319 u32 uwb:1; 320 u32 fan_ctrl_status_undef:1; 321 u32 second_fan:1; 322 u32 second_fan_ctl:1; 323 u32 beep_needs_two_args:1; 324 u32 mixer_no_level_control:1; 325 u32 battery_force_primary:1; 326 u32 input_device_registered:1; 327 u32 platform_drv_registered:1; 328 u32 platform_drv_attrs_registered:1; 329 u32 sensors_pdrv_registered:1; 330 u32 sensors_pdrv_attrs_registered:1; 331 u32 sensors_pdev_attrs_registered:1; 332 u32 hotkey_poll_active:1; 333 u32 has_adaptive_kbd:1; 334 } tp_features; 335 336 static struct { 337 u16 hotkey_mask_ff:1; 338 u16 volume_ctrl_forbidden:1; 339 } tp_warned; 340 341 struct thinkpad_id_data { 342 unsigned int vendor; /* ThinkPad vendor: 343 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 344 345 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 346 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 347 348 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 349 u32 ec_model; 350 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 351 u16 ec_release; 352 353 char *model_str; /* ThinkPad T43 */ 354 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 355 }; 356 static struct thinkpad_id_data thinkpad_id; 357 358 static enum { 359 TPACPI_LIFE_INIT = 0, 360 TPACPI_LIFE_RUNNING, 361 TPACPI_LIFE_EXITING, 362 } tpacpi_lifecycle; 363 364 static int experimental; 365 static u32 dbg_level; 366 367 static struct workqueue_struct *tpacpi_wq; 368 369 enum led_status_t { 370 TPACPI_LED_OFF = 0, 371 TPACPI_LED_ON, 372 TPACPI_LED_BLINK, 373 }; 374 375 /* tpacpi LED class */ 376 struct tpacpi_led_classdev { 377 struct led_classdev led_classdev; 378 int led; 379 }; 380 381 /* brightness level capabilities */ 382 static unsigned int bright_maxlvl; /* 0 = unknown */ 383 384 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 385 static int dbg_wlswemul; 386 static bool tpacpi_wlsw_emulstate; 387 static int dbg_bluetoothemul; 388 static bool tpacpi_bluetooth_emulstate; 389 static int dbg_wwanemul; 390 static bool tpacpi_wwan_emulstate; 391 static int dbg_uwbemul; 392 static bool tpacpi_uwb_emulstate; 393 #endif 394 395 396 /************************************************************************* 397 * Debugging helpers 398 */ 399 400 #define dbg_printk(a_dbg_level, format, arg...) \ 401 do { \ 402 if (dbg_level & (a_dbg_level)) \ 403 printk(KERN_DEBUG pr_fmt("%s: " format), \ 404 __func__, ##arg); \ 405 } while (0) 406 407 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 408 #define vdbg_printk dbg_printk 409 static const char *str_supported(int is_supported); 410 #else 411 static inline const char *str_supported(int is_supported) { return ""; } 412 #define vdbg_printk(a_dbg_level, format, arg...) \ 413 do { if (0) no_printk(format, ##arg); } while (0) 414 #endif 415 416 static void tpacpi_log_usertask(const char * const what) 417 { 418 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 419 what, task_tgid_vnr(current)); 420 } 421 422 #define tpacpi_disclose_usertask(what, format, arg...) \ 423 do { \ 424 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 425 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 426 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 427 what, task_tgid_vnr(current), ## arg); \ 428 } \ 429 } while (0) 430 431 /* 432 * Quirk handling helpers 433 * 434 * ThinkPad IDs and versions seen in the field so far are 435 * two or three characters from the set [0-9A-Z], i.e. base 36. 436 * 437 * We use values well outside that range as specials. 438 */ 439 440 #define TPACPI_MATCH_ANY 0xffffffffU 441 #define TPACPI_MATCH_ANY_VERSION 0xffffU 442 #define TPACPI_MATCH_UNKNOWN 0U 443 444 /* TPID('1', 'Y') == 0x3159 */ 445 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 446 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 447 #define TPVER TPID 448 449 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 450 { .vendor = PCI_VENDOR_ID_IBM, \ 451 .bios = TPID(__id1, __id2), \ 452 .ec = TPACPI_MATCH_ANY, \ 453 .quirks = (__quirk) } 454 455 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 456 { .vendor = PCI_VENDOR_ID_LENOVO, \ 457 .bios = TPID(__id1, __id2), \ 458 .ec = TPACPI_MATCH_ANY, \ 459 .quirks = (__quirk) } 460 461 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 462 { .vendor = PCI_VENDOR_ID_LENOVO, \ 463 .bios = TPID3(__id1, __id2, __id3), \ 464 .ec = TPACPI_MATCH_ANY, \ 465 .quirks = (__quirk) } 466 467 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 468 { .vendor = PCI_VENDOR_ID_IBM, \ 469 .bios = TPACPI_MATCH_ANY, \ 470 .ec = TPID(__id1, __id2), \ 471 .quirks = (__quirk) } 472 473 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 474 { .vendor = PCI_VENDOR_ID_LENOVO, \ 475 .bios = TPACPI_MATCH_ANY, \ 476 .ec = TPID(__id1, __id2), \ 477 .quirks = (__quirk) } 478 479 struct tpacpi_quirk { 480 unsigned int vendor; 481 u32 bios; 482 u32 ec; 483 unsigned long quirks; 484 }; 485 486 /** 487 * tpacpi_check_quirks() - search BIOS/EC version on a list 488 * @qlist: array of &struct tpacpi_quirk 489 * @qlist_size: number of elements in @qlist 490 * 491 * Iterates over a quirks list until one is found that matches the 492 * ThinkPad's vendor, BIOS and EC model. 493 * 494 * Returns 0 if nothing matches, otherwise returns the quirks field of 495 * the matching &struct tpacpi_quirk entry. 496 * 497 * The match criteria is: vendor, ec and bios much match. 498 */ 499 static unsigned long __init tpacpi_check_quirks( 500 const struct tpacpi_quirk *qlist, 501 unsigned int qlist_size) 502 { 503 while (qlist_size) { 504 if ((qlist->vendor == thinkpad_id.vendor || 505 qlist->vendor == TPACPI_MATCH_ANY) && 506 (qlist->bios == thinkpad_id.bios_model || 507 qlist->bios == TPACPI_MATCH_ANY) && 508 (qlist->ec == thinkpad_id.ec_model || 509 qlist->ec == TPACPI_MATCH_ANY)) 510 return qlist->quirks; 511 512 qlist_size--; 513 qlist++; 514 } 515 return 0; 516 } 517 518 static inline bool __pure __init tpacpi_is_lenovo(void) 519 { 520 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 521 } 522 523 static inline bool __pure __init tpacpi_is_ibm(void) 524 { 525 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 526 } 527 528 /**************************************************************************** 529 **************************************************************************** 530 * 531 * ACPI Helpers and device model 532 * 533 **************************************************************************** 534 ****************************************************************************/ 535 536 /************************************************************************* 537 * ACPI basic handles 538 */ 539 540 static acpi_handle root_handle; 541 static acpi_handle ec_handle; 542 543 #define TPACPI_HANDLE(object, parent, paths...) \ 544 static acpi_handle object##_handle; \ 545 static const acpi_handle * const object##_parent __initconst = \ 546 &parent##_handle; \ 547 static char *object##_paths[] __initdata = { paths } 548 549 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 550 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 551 552 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 553 /* T4x, X31, X40 */ 554 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 555 "\\CMS", /* R40, R40e */ 556 ); /* all others */ 557 558 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 559 "^HKEY", /* R30, R31 */ 560 "HKEY", /* all others */ 561 ); /* 570 */ 562 563 /************************************************************************* 564 * ACPI helpers 565 */ 566 567 static int acpi_evalf(acpi_handle handle, 568 int *res, char *method, char *fmt, ...) 569 { 570 char *fmt0 = fmt; 571 struct acpi_object_list params; 572 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 573 struct acpi_buffer result, *resultp; 574 union acpi_object out_obj; 575 acpi_status status; 576 va_list ap; 577 char res_type; 578 int success; 579 int quiet; 580 581 if (!*fmt) { 582 pr_err("acpi_evalf() called with empty format\n"); 583 return 0; 584 } 585 586 if (*fmt == 'q') { 587 quiet = 1; 588 fmt++; 589 } else 590 quiet = 0; 591 592 res_type = *(fmt++); 593 594 params.count = 0; 595 params.pointer = &in_objs[0]; 596 597 va_start(ap, fmt); 598 while (*fmt) { 599 char c = *(fmt++); 600 switch (c) { 601 case 'd': /* int */ 602 in_objs[params.count].integer.value = va_arg(ap, int); 603 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 604 break; 605 /* add more types as needed */ 606 default: 607 pr_err("acpi_evalf() called with invalid format character '%c'\n", 608 c); 609 va_end(ap); 610 return 0; 611 } 612 } 613 va_end(ap); 614 615 if (res_type != 'v') { 616 result.length = sizeof(out_obj); 617 result.pointer = &out_obj; 618 resultp = &result; 619 } else 620 resultp = NULL; 621 622 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 623 624 switch (res_type) { 625 case 'd': /* int */ 626 success = (status == AE_OK && 627 out_obj.type == ACPI_TYPE_INTEGER); 628 if (success && res) 629 *res = out_obj.integer.value; 630 break; 631 case 'v': /* void */ 632 success = status == AE_OK; 633 break; 634 /* add more types as needed */ 635 default: 636 pr_err("acpi_evalf() called with invalid format character '%c'\n", 637 res_type); 638 return 0; 639 } 640 641 if (!success && !quiet) 642 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 643 method, fmt0, acpi_format_exception(status)); 644 645 return success; 646 } 647 648 static int acpi_ec_read(int i, u8 *p) 649 { 650 int v; 651 652 if (ecrd_handle) { 653 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 654 return 0; 655 *p = v; 656 } else { 657 if (ec_read(i, p) < 0) 658 return 0; 659 } 660 661 return 1; 662 } 663 664 static int acpi_ec_write(int i, u8 v) 665 { 666 if (ecwr_handle) { 667 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 668 return 0; 669 } else { 670 if (ec_write(i, v) < 0) 671 return 0; 672 } 673 674 return 1; 675 } 676 677 static int issue_thinkpad_cmos_command(int cmos_cmd) 678 { 679 if (!cmos_handle) 680 return -ENXIO; 681 682 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 683 return -EIO; 684 685 return 0; 686 } 687 688 /************************************************************************* 689 * ACPI device model 690 */ 691 692 #define TPACPI_ACPIHANDLE_INIT(object) \ 693 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 694 object##_paths, ARRAY_SIZE(object##_paths)) 695 696 static void __init drv_acpi_handle_init(const char *name, 697 acpi_handle *handle, const acpi_handle parent, 698 char **paths, const int num_paths) 699 { 700 int i; 701 acpi_status status; 702 703 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 704 name); 705 706 for (i = 0; i < num_paths; i++) { 707 status = acpi_get_handle(parent, paths[i], handle); 708 if (ACPI_SUCCESS(status)) { 709 dbg_printk(TPACPI_DBG_INIT, 710 "Found ACPI handle %s for %s\n", 711 paths[i], name); 712 return; 713 } 714 } 715 716 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 717 name); 718 *handle = NULL; 719 } 720 721 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 722 u32 level, void *context, void **return_value) 723 { 724 struct acpi_device *dev; 725 if (!strcmp(context, "video")) { 726 if (acpi_bus_get_device(handle, &dev)) 727 return AE_OK; 728 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 729 return AE_OK; 730 } 731 732 *(acpi_handle *)return_value = handle; 733 734 return AE_CTRL_TERMINATE; 735 } 736 737 static void __init tpacpi_acpi_handle_locate(const char *name, 738 const char *hid, 739 acpi_handle *handle) 740 { 741 acpi_status status; 742 acpi_handle device_found; 743 744 BUG_ON(!name || !handle); 745 vdbg_printk(TPACPI_DBG_INIT, 746 "trying to locate ACPI handle for %s, using HID %s\n", 747 name, hid ? hid : "NULL"); 748 749 memset(&device_found, 0, sizeof(device_found)); 750 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 751 (void *)name, &device_found); 752 753 *handle = NULL; 754 755 if (ACPI_SUCCESS(status)) { 756 *handle = device_found; 757 dbg_printk(TPACPI_DBG_INIT, 758 "Found ACPI handle for %s\n", name); 759 } else { 760 vdbg_printk(TPACPI_DBG_INIT, 761 "Could not locate an ACPI handle for %s: %s\n", 762 name, acpi_format_exception(status)); 763 } 764 } 765 766 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 767 { 768 struct ibm_struct *ibm = data; 769 770 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 771 return; 772 773 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 774 return; 775 776 ibm->acpi->notify(ibm, event); 777 } 778 779 static int __init setup_acpi_notify(struct ibm_struct *ibm) 780 { 781 acpi_status status; 782 int rc; 783 784 BUG_ON(!ibm->acpi); 785 786 if (!*ibm->acpi->handle) 787 return 0; 788 789 vdbg_printk(TPACPI_DBG_INIT, 790 "setting up ACPI notify for %s\n", ibm->name); 791 792 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 793 if (rc < 0) { 794 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 795 return -ENODEV; 796 } 797 798 ibm->acpi->device->driver_data = ibm; 799 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 800 TPACPI_ACPI_EVENT_PREFIX, 801 ibm->name); 802 803 status = acpi_install_notify_handler(*ibm->acpi->handle, 804 ibm->acpi->type, dispatch_acpi_notify, ibm); 805 if (ACPI_FAILURE(status)) { 806 if (status == AE_ALREADY_EXISTS) { 807 pr_notice("another device driver is already handling %s events\n", 808 ibm->name); 809 } else { 810 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 811 ibm->name, acpi_format_exception(status)); 812 } 813 return -ENODEV; 814 } 815 ibm->flags.acpi_notify_installed = 1; 816 return 0; 817 } 818 819 static int __init tpacpi_device_add(struct acpi_device *device) 820 { 821 return 0; 822 } 823 824 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 825 { 826 int rc; 827 828 dbg_printk(TPACPI_DBG_INIT, 829 "registering %s as an ACPI driver\n", ibm->name); 830 831 BUG_ON(!ibm->acpi); 832 833 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 834 if (!ibm->acpi->driver) { 835 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 836 return -ENOMEM; 837 } 838 839 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 840 ibm->acpi->driver->ids = ibm->acpi->hid; 841 842 ibm->acpi->driver->ops.add = &tpacpi_device_add; 843 844 rc = acpi_bus_register_driver(ibm->acpi->driver); 845 if (rc < 0) { 846 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 847 ibm->name, rc); 848 kfree(ibm->acpi->driver); 849 ibm->acpi->driver = NULL; 850 } else if (!rc) 851 ibm->flags.acpi_driver_registered = 1; 852 853 return rc; 854 } 855 856 857 /**************************************************************************** 858 **************************************************************************** 859 * 860 * Procfs Helpers 861 * 862 **************************************************************************** 863 ****************************************************************************/ 864 865 static int dispatch_proc_show(struct seq_file *m, void *v) 866 { 867 struct ibm_struct *ibm = m->private; 868 869 if (!ibm || !ibm->read) 870 return -EINVAL; 871 return ibm->read(m); 872 } 873 874 static int dispatch_proc_open(struct inode *inode, struct file *file) 875 { 876 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 877 } 878 879 static ssize_t dispatch_proc_write(struct file *file, 880 const char __user *userbuf, 881 size_t count, loff_t *pos) 882 { 883 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 884 char *kernbuf; 885 int ret; 886 887 if (!ibm || !ibm->write) 888 return -EINVAL; 889 if (count > PAGE_SIZE - 1) 890 return -EINVAL; 891 892 kernbuf = kmalloc(count + 1, GFP_KERNEL); 893 if (!kernbuf) 894 return -ENOMEM; 895 896 if (copy_from_user(kernbuf, userbuf, count)) { 897 kfree(kernbuf); 898 return -EFAULT; 899 } 900 901 kernbuf[count] = 0; 902 ret = ibm->write(kernbuf); 903 if (ret == 0) 904 ret = count; 905 906 kfree(kernbuf); 907 908 return ret; 909 } 910 911 static const struct proc_ops dispatch_proc_ops = { 912 .proc_open = dispatch_proc_open, 913 .proc_read = seq_read, 914 .proc_lseek = seq_lseek, 915 .proc_release = single_release, 916 .proc_write = dispatch_proc_write, 917 }; 918 919 /**************************************************************************** 920 **************************************************************************** 921 * 922 * Device model: input, hwmon and platform 923 * 924 **************************************************************************** 925 ****************************************************************************/ 926 927 static struct platform_device *tpacpi_pdev; 928 static struct platform_device *tpacpi_sensors_pdev; 929 static struct device *tpacpi_hwmon; 930 static struct input_dev *tpacpi_inputdev; 931 static struct mutex tpacpi_inputdev_send_mutex; 932 static LIST_HEAD(tpacpi_all_drivers); 933 934 #ifdef CONFIG_PM_SLEEP 935 static int tpacpi_suspend_handler(struct device *dev) 936 { 937 struct ibm_struct *ibm, *itmp; 938 939 list_for_each_entry_safe(ibm, itmp, 940 &tpacpi_all_drivers, 941 all_drivers) { 942 if (ibm->suspend) 943 (ibm->suspend)(); 944 } 945 946 return 0; 947 } 948 949 static int tpacpi_resume_handler(struct device *dev) 950 { 951 struct ibm_struct *ibm, *itmp; 952 953 list_for_each_entry_safe(ibm, itmp, 954 &tpacpi_all_drivers, 955 all_drivers) { 956 if (ibm->resume) 957 (ibm->resume)(); 958 } 959 960 return 0; 961 } 962 #endif 963 964 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 965 tpacpi_suspend_handler, tpacpi_resume_handler); 966 967 static void tpacpi_shutdown_handler(struct platform_device *pdev) 968 { 969 struct ibm_struct *ibm, *itmp; 970 971 list_for_each_entry_safe(ibm, itmp, 972 &tpacpi_all_drivers, 973 all_drivers) { 974 if (ibm->shutdown) 975 (ibm->shutdown)(); 976 } 977 } 978 979 static struct platform_driver tpacpi_pdriver = { 980 .driver = { 981 .name = TPACPI_DRVR_NAME, 982 .pm = &tpacpi_pm, 983 }, 984 .shutdown = tpacpi_shutdown_handler, 985 }; 986 987 static struct platform_driver tpacpi_hwmon_pdriver = { 988 .driver = { 989 .name = TPACPI_HWMON_DRVR_NAME, 990 }, 991 }; 992 993 /************************************************************************* 994 * sysfs support helpers 995 */ 996 997 struct attribute_set { 998 unsigned int members, max_members; 999 struct attribute_group group; 1000 }; 1001 1002 struct attribute_set_obj { 1003 struct attribute_set s; 1004 struct attribute *a; 1005 } __attribute__((packed)); 1006 1007 static struct attribute_set *create_attr_set(unsigned int max_members, 1008 const char *name) 1009 { 1010 struct attribute_set_obj *sobj; 1011 1012 if (max_members == 0) 1013 return NULL; 1014 1015 /* Allocates space for implicit NULL at the end too */ 1016 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1017 max_members * sizeof(struct attribute *), 1018 GFP_KERNEL); 1019 if (!sobj) 1020 return NULL; 1021 sobj->s.max_members = max_members; 1022 sobj->s.group.attrs = &sobj->a; 1023 sobj->s.group.name = name; 1024 1025 return &sobj->s; 1026 } 1027 1028 #define destroy_attr_set(_set) \ 1029 kfree(_set) 1030 1031 /* not multi-threaded safe, use it in a single thread per set */ 1032 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1033 { 1034 if (!s || !attr) 1035 return -EINVAL; 1036 1037 if (s->members >= s->max_members) 1038 return -ENOMEM; 1039 1040 s->group.attrs[s->members] = attr; 1041 s->members++; 1042 1043 return 0; 1044 } 1045 1046 static int add_many_to_attr_set(struct attribute_set *s, 1047 struct attribute **attr, 1048 unsigned int count) 1049 { 1050 int i, res; 1051 1052 for (i = 0; i < count; i++) { 1053 res = add_to_attr_set(s, attr[i]); 1054 if (res) 1055 return res; 1056 } 1057 1058 return 0; 1059 } 1060 1061 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1062 { 1063 sysfs_remove_group(kobj, &s->group); 1064 destroy_attr_set(s); 1065 } 1066 1067 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1068 sysfs_create_group(_kobj, &_attr_set->group) 1069 1070 static int parse_strtoul(const char *buf, 1071 unsigned long max, unsigned long *value) 1072 { 1073 char *endp; 1074 1075 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1076 endp = skip_spaces(endp); 1077 if (*endp || *value > max) 1078 return -EINVAL; 1079 1080 return 0; 1081 } 1082 1083 static void tpacpi_disable_brightness_delay(void) 1084 { 1085 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1086 pr_notice("ACPI backlight control delay disabled\n"); 1087 } 1088 1089 static void printk_deprecated_attribute(const char * const what, 1090 const char * const details) 1091 { 1092 tpacpi_log_usertask("deprecated sysfs attribute"); 1093 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1094 what, details); 1095 } 1096 1097 /************************************************************************* 1098 * rfkill and radio control support helpers 1099 */ 1100 1101 /* 1102 * ThinkPad-ACPI firmware handling model: 1103 * 1104 * WLSW (master wireless switch) is event-driven, and is common to all 1105 * firmware-controlled radios. It cannot be controlled, just monitored, 1106 * as expected. It overrides all radio state in firmware 1107 * 1108 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1109 * (TODO: verify how WLSW interacts with the returned radio state). 1110 * 1111 * The only time there are shadow radio state changes, is when 1112 * masked-off hotkeys are used. 1113 */ 1114 1115 /* 1116 * Internal driver API for radio state: 1117 * 1118 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1119 * bool: true means radio blocked (off) 1120 */ 1121 enum tpacpi_rfkill_state { 1122 TPACPI_RFK_RADIO_OFF = 0, 1123 TPACPI_RFK_RADIO_ON 1124 }; 1125 1126 /* rfkill switches */ 1127 enum tpacpi_rfk_id { 1128 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1129 TPACPI_RFK_WWAN_SW_ID, 1130 TPACPI_RFK_UWB_SW_ID, 1131 TPACPI_RFK_SW_MAX 1132 }; 1133 1134 static const char *tpacpi_rfkill_names[] = { 1135 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1136 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1137 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1138 [TPACPI_RFK_SW_MAX] = NULL 1139 }; 1140 1141 /* ThinkPad-ACPI rfkill subdriver */ 1142 struct tpacpi_rfk { 1143 struct rfkill *rfkill; 1144 enum tpacpi_rfk_id id; 1145 const struct tpacpi_rfk_ops *ops; 1146 }; 1147 1148 struct tpacpi_rfk_ops { 1149 /* firmware interface */ 1150 int (*get_status)(void); 1151 int (*set_status)(const enum tpacpi_rfkill_state); 1152 }; 1153 1154 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1155 1156 /* Query FW and update rfkill sw state for a given rfkill switch */ 1157 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1158 { 1159 int status; 1160 1161 if (!tp_rfk) 1162 return -ENODEV; 1163 1164 status = (tp_rfk->ops->get_status)(); 1165 if (status < 0) 1166 return status; 1167 1168 rfkill_set_sw_state(tp_rfk->rfkill, 1169 (status == TPACPI_RFK_RADIO_OFF)); 1170 1171 return status; 1172 } 1173 1174 /* Query FW and update rfkill sw state for all rfkill switches */ 1175 static void tpacpi_rfk_update_swstate_all(void) 1176 { 1177 unsigned int i; 1178 1179 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1180 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1181 } 1182 1183 /* 1184 * Sync the HW-blocking state of all rfkill switches, 1185 * do notice it causes the rfkill core to schedule uevents 1186 */ 1187 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1188 { 1189 unsigned int i; 1190 struct tpacpi_rfk *tp_rfk; 1191 1192 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1193 tp_rfk = tpacpi_rfkill_switches[i]; 1194 if (tp_rfk) { 1195 if (rfkill_set_hw_state(tp_rfk->rfkill, 1196 blocked)) { 1197 /* ignore -- we track sw block */ 1198 } 1199 } 1200 } 1201 } 1202 1203 /* Call to get the WLSW state from the firmware */ 1204 static int hotkey_get_wlsw(void); 1205 1206 /* Call to query WLSW state and update all rfkill switches */ 1207 static bool tpacpi_rfk_check_hwblock_state(void) 1208 { 1209 int res = hotkey_get_wlsw(); 1210 int hw_blocked; 1211 1212 /* When unknown or unsupported, we have to assume it is unblocked */ 1213 if (res < 0) 1214 return false; 1215 1216 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1217 tpacpi_rfk_update_hwblock_state(hw_blocked); 1218 1219 return hw_blocked; 1220 } 1221 1222 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1223 { 1224 struct tpacpi_rfk *tp_rfk = data; 1225 int res; 1226 1227 dbg_printk(TPACPI_DBG_RFKILL, 1228 "request to change radio state to %s\n", 1229 blocked ? "blocked" : "unblocked"); 1230 1231 /* try to set radio state */ 1232 res = (tp_rfk->ops->set_status)(blocked ? 1233 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1234 1235 /* and update the rfkill core with whatever the FW really did */ 1236 tpacpi_rfk_update_swstate(tp_rfk); 1237 1238 return (res < 0) ? res : 0; 1239 } 1240 1241 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1242 .set_block = tpacpi_rfk_hook_set_block, 1243 }; 1244 1245 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1246 const struct tpacpi_rfk_ops *tp_rfkops, 1247 const enum rfkill_type rfktype, 1248 const char *name, 1249 const bool set_default) 1250 { 1251 struct tpacpi_rfk *atp_rfk; 1252 int res; 1253 bool sw_state = false; 1254 bool hw_state; 1255 int sw_status; 1256 1257 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1258 1259 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1260 if (atp_rfk) 1261 atp_rfk->rfkill = rfkill_alloc(name, 1262 &tpacpi_pdev->dev, 1263 rfktype, 1264 &tpacpi_rfk_rfkill_ops, 1265 atp_rfk); 1266 if (!atp_rfk || !atp_rfk->rfkill) { 1267 pr_err("failed to allocate memory for rfkill class\n"); 1268 kfree(atp_rfk); 1269 return -ENOMEM; 1270 } 1271 1272 atp_rfk->id = id; 1273 atp_rfk->ops = tp_rfkops; 1274 1275 sw_status = (tp_rfkops->get_status)(); 1276 if (sw_status < 0) { 1277 pr_err("failed to read initial state for %s, error %d\n", 1278 name, sw_status); 1279 } else { 1280 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1281 if (set_default) { 1282 /* try to keep the initial state, since we ask the 1283 * firmware to preserve it across S5 in NVRAM */ 1284 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1285 } 1286 } 1287 hw_state = tpacpi_rfk_check_hwblock_state(); 1288 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1289 1290 res = rfkill_register(atp_rfk->rfkill); 1291 if (res < 0) { 1292 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1293 rfkill_destroy(atp_rfk->rfkill); 1294 kfree(atp_rfk); 1295 return res; 1296 } 1297 1298 tpacpi_rfkill_switches[id] = atp_rfk; 1299 1300 pr_info("rfkill switch %s: radio is %sblocked\n", 1301 name, (sw_state || hw_state) ? "" : "un"); 1302 return 0; 1303 } 1304 1305 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1306 { 1307 struct tpacpi_rfk *tp_rfk; 1308 1309 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1310 1311 tp_rfk = tpacpi_rfkill_switches[id]; 1312 if (tp_rfk) { 1313 rfkill_unregister(tp_rfk->rfkill); 1314 rfkill_destroy(tp_rfk->rfkill); 1315 tpacpi_rfkill_switches[id] = NULL; 1316 kfree(tp_rfk); 1317 } 1318 } 1319 1320 static void printk_deprecated_rfkill_attribute(const char * const what) 1321 { 1322 printk_deprecated_attribute(what, 1323 "Please switch to generic rfkill before year 2010"); 1324 } 1325 1326 /* sysfs <radio> enable ------------------------------------------------ */ 1327 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1328 struct device_attribute *attr, 1329 char *buf) 1330 { 1331 int status; 1332 1333 printk_deprecated_rfkill_attribute(attr->attr.name); 1334 1335 /* This is in the ABI... */ 1336 if (tpacpi_rfk_check_hwblock_state()) { 1337 status = TPACPI_RFK_RADIO_OFF; 1338 } else { 1339 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1340 if (status < 0) 1341 return status; 1342 } 1343 1344 return snprintf(buf, PAGE_SIZE, "%d\n", 1345 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1346 } 1347 1348 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1349 struct device_attribute *attr, 1350 const char *buf, size_t count) 1351 { 1352 unsigned long t; 1353 int res; 1354 1355 printk_deprecated_rfkill_attribute(attr->attr.name); 1356 1357 if (parse_strtoul(buf, 1, &t)) 1358 return -EINVAL; 1359 1360 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1361 1362 /* This is in the ABI... */ 1363 if (tpacpi_rfk_check_hwblock_state() && !!t) 1364 return -EPERM; 1365 1366 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1367 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1368 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1369 1370 return (res < 0) ? res : count; 1371 } 1372 1373 /* procfs -------------------------------------------------------------- */ 1374 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1375 { 1376 if (id >= TPACPI_RFK_SW_MAX) 1377 seq_printf(m, "status:\t\tnot supported\n"); 1378 else { 1379 int status; 1380 1381 /* This is in the ABI... */ 1382 if (tpacpi_rfk_check_hwblock_state()) { 1383 status = TPACPI_RFK_RADIO_OFF; 1384 } else { 1385 status = tpacpi_rfk_update_swstate( 1386 tpacpi_rfkill_switches[id]); 1387 if (status < 0) 1388 return status; 1389 } 1390 1391 seq_printf(m, "status:\t\t%s\n", 1392 (status == TPACPI_RFK_RADIO_ON) ? 1393 "enabled" : "disabled"); 1394 seq_printf(m, "commands:\tenable, disable\n"); 1395 } 1396 1397 return 0; 1398 } 1399 1400 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1401 { 1402 char *cmd; 1403 int status = -1; 1404 int res = 0; 1405 1406 if (id >= TPACPI_RFK_SW_MAX) 1407 return -ENODEV; 1408 1409 while ((cmd = strsep(&buf, ","))) { 1410 if (strlencmp(cmd, "enable") == 0) 1411 status = TPACPI_RFK_RADIO_ON; 1412 else if (strlencmp(cmd, "disable") == 0) 1413 status = TPACPI_RFK_RADIO_OFF; 1414 else 1415 return -EINVAL; 1416 } 1417 1418 if (status != -1) { 1419 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1420 (status == TPACPI_RFK_RADIO_ON) ? 1421 "enable" : "disable", 1422 tpacpi_rfkill_names[id]); 1423 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1424 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1425 } 1426 1427 return res; 1428 } 1429 1430 /************************************************************************* 1431 * thinkpad-acpi driver attributes 1432 */ 1433 1434 /* interface_version --------------------------------------------------- */ 1435 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1436 { 1437 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1438 } 1439 static DRIVER_ATTR_RO(interface_version); 1440 1441 /* debug_level --------------------------------------------------------- */ 1442 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1443 { 1444 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1445 } 1446 1447 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1448 size_t count) 1449 { 1450 unsigned long t; 1451 1452 if (parse_strtoul(buf, 0xffff, &t)) 1453 return -EINVAL; 1454 1455 dbg_level = t; 1456 1457 return count; 1458 } 1459 static DRIVER_ATTR_RW(debug_level); 1460 1461 /* version ------------------------------------------------------------- */ 1462 static ssize_t version_show(struct device_driver *drv, char *buf) 1463 { 1464 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1465 TPACPI_DESC, TPACPI_VERSION); 1466 } 1467 static DRIVER_ATTR_RO(version); 1468 1469 /* --------------------------------------------------------------------- */ 1470 1471 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1472 1473 /* wlsw_emulstate ------------------------------------------------------ */ 1474 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1475 { 1476 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1477 } 1478 1479 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1480 size_t count) 1481 { 1482 unsigned long t; 1483 1484 if (parse_strtoul(buf, 1, &t)) 1485 return -EINVAL; 1486 1487 if (tpacpi_wlsw_emulstate != !!t) { 1488 tpacpi_wlsw_emulstate = !!t; 1489 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1490 } 1491 1492 return count; 1493 } 1494 static DRIVER_ATTR_RW(wlsw_emulstate); 1495 1496 /* bluetooth_emulstate ------------------------------------------------- */ 1497 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1498 { 1499 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1500 } 1501 1502 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1503 const char *buf, size_t count) 1504 { 1505 unsigned long t; 1506 1507 if (parse_strtoul(buf, 1, &t)) 1508 return -EINVAL; 1509 1510 tpacpi_bluetooth_emulstate = !!t; 1511 1512 return count; 1513 } 1514 static DRIVER_ATTR_RW(bluetooth_emulstate); 1515 1516 /* wwan_emulstate ------------------------------------------------- */ 1517 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1518 { 1519 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1520 } 1521 1522 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1523 size_t count) 1524 { 1525 unsigned long t; 1526 1527 if (parse_strtoul(buf, 1, &t)) 1528 return -EINVAL; 1529 1530 tpacpi_wwan_emulstate = !!t; 1531 1532 return count; 1533 } 1534 static DRIVER_ATTR_RW(wwan_emulstate); 1535 1536 /* uwb_emulstate ------------------------------------------------- */ 1537 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1538 { 1539 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1540 } 1541 1542 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1543 size_t count) 1544 { 1545 unsigned long t; 1546 1547 if (parse_strtoul(buf, 1, &t)) 1548 return -EINVAL; 1549 1550 tpacpi_uwb_emulstate = !!t; 1551 1552 return count; 1553 } 1554 static DRIVER_ATTR_RW(uwb_emulstate); 1555 #endif 1556 1557 /* --------------------------------------------------------------------- */ 1558 1559 static struct driver_attribute *tpacpi_driver_attributes[] = { 1560 &driver_attr_debug_level, &driver_attr_version, 1561 &driver_attr_interface_version, 1562 }; 1563 1564 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1565 { 1566 int i, res; 1567 1568 i = 0; 1569 res = 0; 1570 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1571 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1572 i++; 1573 } 1574 1575 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1576 if (!res && dbg_wlswemul) 1577 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1578 if (!res && dbg_bluetoothemul) 1579 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1580 if (!res && dbg_wwanemul) 1581 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1582 if (!res && dbg_uwbemul) 1583 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1584 #endif 1585 1586 return res; 1587 } 1588 1589 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1590 { 1591 int i; 1592 1593 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1594 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1595 1596 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1597 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1598 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1599 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1600 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1601 #endif 1602 } 1603 1604 /************************************************************************* 1605 * Firmware Data 1606 */ 1607 1608 /* 1609 * Table of recommended minimum BIOS versions 1610 * 1611 * Reasons for listing: 1612 * 1. Stable BIOS, listed because the unknown amount of 1613 * bugs and bad ACPI behaviour on older versions 1614 * 1615 * 2. BIOS or EC fw with known bugs that trigger on Linux 1616 * 1617 * 3. BIOS with known reduced functionality in older versions 1618 * 1619 * We recommend the latest BIOS and EC version. 1620 * We only support the latest BIOS and EC fw version as a rule. 1621 * 1622 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1623 * Information from users in ThinkWiki 1624 * 1625 * WARNING: we use this table also to detect that the machine is 1626 * a ThinkPad in some cases, so don't remove entries lightly. 1627 */ 1628 1629 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1630 { .vendor = (__v), \ 1631 .bios = TPID(__id1, __id2), \ 1632 .ec = TPACPI_MATCH_ANY, \ 1633 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1634 | TPVER(__bv1, __bv2) } 1635 1636 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1637 __eid, __ev1, __ev2) \ 1638 { .vendor = (__v), \ 1639 .bios = TPID(__bid1, __bid2), \ 1640 .ec = __eid, \ 1641 .quirks = TPVER(__ev1, __ev2) << 16 \ 1642 | TPVER(__bv1, __bv2) } 1643 1644 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1645 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1646 1647 /* Outdated IBM BIOSes often lack the EC id string */ 1648 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1649 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1650 __bv1, __bv2, TPID(__id1, __id2), \ 1651 __ev1, __ev2), \ 1652 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1653 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1654 __ev1, __ev2) 1655 1656 /* Outdated IBM BIOSes often lack the EC id string */ 1657 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1658 __eid1, __eid2, __ev1, __ev2) \ 1659 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1660 __bv1, __bv2, TPID(__eid1, __eid2), \ 1661 __ev1, __ev2), \ 1662 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1663 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1664 __ev1, __ev2) 1665 1666 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1667 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1668 1669 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1670 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1671 __bv1, __bv2, TPID(__id1, __id2), \ 1672 __ev1, __ev2) 1673 1674 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1675 __eid1, __eid2, __ev1, __ev2) \ 1676 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1677 __bv1, __bv2, TPID(__eid1, __eid2), \ 1678 __ev1, __ev2) 1679 1680 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1681 /* Numeric models ------------------ */ 1682 /* FW MODEL BIOS VERS */ 1683 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1684 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1685 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1686 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1687 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1688 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1689 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1690 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1691 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1692 1693 /* A-series ------------------------- */ 1694 /* FW MODEL BIOS VERS EC VERS */ 1695 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1696 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1697 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1698 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1699 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1700 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1701 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1702 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1703 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1704 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1705 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1706 1707 /* G-series ------------------------- */ 1708 /* FW MODEL BIOS VERS */ 1709 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1710 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1711 1712 /* R-series, T-series --------------- */ 1713 /* FW MODEL BIOS VERS EC VERS */ 1714 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1715 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1716 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1717 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1718 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1719 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1720 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1721 T40/p, T41/p, T42/p (1) */ 1722 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1723 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1724 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1725 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1726 1727 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1728 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1729 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1730 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1731 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1732 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1733 1734 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1735 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1736 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1737 1738 /* BIOS FW BIOS VERS EC FW EC VERS */ 1739 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1740 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1741 1742 /* X-series ------------------------- */ 1743 /* FW MODEL BIOS VERS EC VERS */ 1744 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1745 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1746 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1747 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1748 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1749 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1750 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1751 1752 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1753 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1754 1755 /* (0) - older versions lack DMI EC fw string and functionality */ 1756 /* (1) - older versions known to lack functionality */ 1757 }; 1758 1759 #undef TPV_QL1 1760 #undef TPV_QL0 1761 #undef TPV_QI2 1762 #undef TPV_QI1 1763 #undef TPV_QI0 1764 #undef TPV_Q_X 1765 #undef TPV_Q 1766 1767 static void __init tpacpi_check_outdated_fw(void) 1768 { 1769 unsigned long fwvers; 1770 u16 ec_version, bios_version; 1771 1772 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1773 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1774 1775 if (!fwvers) 1776 return; 1777 1778 bios_version = fwvers & 0xffffU; 1779 ec_version = (fwvers >> 16) & 0xffffU; 1780 1781 /* note that unknown versions are set to 0x0000 and we use that */ 1782 if ((bios_version > thinkpad_id.bios_release) || 1783 (ec_version > thinkpad_id.ec_release && 1784 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1785 /* 1786 * The changelogs would let us track down the exact 1787 * reason, but it is just too much of a pain to track 1788 * it. We only list BIOSes that are either really 1789 * broken, or really stable to begin with, so it is 1790 * best if the user upgrades the firmware anyway. 1791 */ 1792 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1793 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1794 } 1795 } 1796 1797 static bool __init tpacpi_is_fw_known(void) 1798 { 1799 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1800 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1801 } 1802 1803 /**************************************************************************** 1804 **************************************************************************** 1805 * 1806 * Subdrivers 1807 * 1808 **************************************************************************** 1809 ****************************************************************************/ 1810 1811 /************************************************************************* 1812 * thinkpad-acpi metadata subdriver 1813 */ 1814 1815 static int thinkpad_acpi_driver_read(struct seq_file *m) 1816 { 1817 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1818 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1819 return 0; 1820 } 1821 1822 static struct ibm_struct thinkpad_acpi_driver_data = { 1823 .name = "driver", 1824 .read = thinkpad_acpi_driver_read, 1825 }; 1826 1827 /************************************************************************* 1828 * Hotkey subdriver 1829 */ 1830 1831 /* 1832 * ThinkPad firmware event model 1833 * 1834 * The ThinkPad firmware has two main event interfaces: normal ACPI 1835 * notifications (which follow the ACPI standard), and a private event 1836 * interface. 1837 * 1838 * The private event interface also issues events for the hotkeys. As 1839 * the driver gained features, the event handling code ended up being 1840 * built around the hotkey subdriver. This will need to be refactored 1841 * to a more formal event API eventually. 1842 * 1843 * Some "hotkeys" are actually supposed to be used as event reports, 1844 * such as "brightness has changed", "volume has changed", depending on 1845 * the ThinkPad model and how the firmware is operating. 1846 * 1847 * Unlike other classes, hotkey-class events have mask/unmask control on 1848 * non-ancient firmware. However, how it behaves changes a lot with the 1849 * firmware model and version. 1850 */ 1851 1852 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1853 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1854 TP_ACPI_HOTKEYSCAN_FNF2, 1855 TP_ACPI_HOTKEYSCAN_FNF3, 1856 TP_ACPI_HOTKEYSCAN_FNF4, 1857 TP_ACPI_HOTKEYSCAN_FNF5, 1858 TP_ACPI_HOTKEYSCAN_FNF6, 1859 TP_ACPI_HOTKEYSCAN_FNF7, 1860 TP_ACPI_HOTKEYSCAN_FNF8, 1861 TP_ACPI_HOTKEYSCAN_FNF9, 1862 TP_ACPI_HOTKEYSCAN_FNF10, 1863 TP_ACPI_HOTKEYSCAN_FNF11, 1864 TP_ACPI_HOTKEYSCAN_FNF12, 1865 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1866 TP_ACPI_HOTKEYSCAN_FNINSERT, 1867 TP_ACPI_HOTKEYSCAN_FNDELETE, 1868 TP_ACPI_HOTKEYSCAN_FNHOME, 1869 TP_ACPI_HOTKEYSCAN_FNEND, 1870 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1871 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1872 TP_ACPI_HOTKEYSCAN_FNSPACE, 1873 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1874 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1875 TP_ACPI_HOTKEYSCAN_MUTE, 1876 TP_ACPI_HOTKEYSCAN_THINKPAD, 1877 TP_ACPI_HOTKEYSCAN_UNK1, 1878 TP_ACPI_HOTKEYSCAN_UNK2, 1879 TP_ACPI_HOTKEYSCAN_UNK3, 1880 TP_ACPI_HOTKEYSCAN_UNK4, 1881 TP_ACPI_HOTKEYSCAN_UNK5, 1882 TP_ACPI_HOTKEYSCAN_UNK6, 1883 TP_ACPI_HOTKEYSCAN_UNK7, 1884 TP_ACPI_HOTKEYSCAN_UNK8, 1885 1886 /* Adaptive keyboard keycodes */ 1887 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1888 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1889 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1890 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1891 TP_ACPI_HOTKEYSCAN_CLOUD, 1892 TP_ACPI_HOTKEYSCAN_UNK9, 1893 TP_ACPI_HOTKEYSCAN_VOICE, 1894 TP_ACPI_HOTKEYSCAN_UNK10, 1895 TP_ACPI_HOTKEYSCAN_GESTURES, 1896 TP_ACPI_HOTKEYSCAN_UNK11, 1897 TP_ACPI_HOTKEYSCAN_UNK12, 1898 TP_ACPI_HOTKEYSCAN_UNK13, 1899 TP_ACPI_HOTKEYSCAN_CONFIG, 1900 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1901 TP_ACPI_HOTKEYSCAN_RELOAD, 1902 TP_ACPI_HOTKEYSCAN_BACK, 1903 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1904 TP_ACPI_HOTKEYSCAN_MIC_UP, 1905 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1906 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1907 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1908 1909 /* Lenovo extended keymap, starting at 0x1300 */ 1910 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1911 /* first new observed key (star, favorites) is 0x1311 */ 1912 TP_ACPI_HOTKEYSCAN_STAR = 69, 1913 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1914 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1915 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1916 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1917 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1918 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1919 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1920 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1921 1922 /* Hotkey keymap size */ 1923 TPACPI_HOTKEY_MAP_LEN 1924 }; 1925 1926 enum { /* Keys/events available through NVRAM polling */ 1927 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1928 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1929 }; 1930 1931 enum { /* Positions of some of the keys in hotkey masks */ 1932 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1933 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1934 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1935 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1936 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1937 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1938 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1939 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1940 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1941 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1942 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1943 }; 1944 1945 enum { /* NVRAM to ACPI HKEY group map */ 1946 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1947 TP_ACPI_HKEY_ZOOM_MASK | 1948 TP_ACPI_HKEY_DISPSWTCH_MASK | 1949 TP_ACPI_HKEY_HIBERNATE_MASK, 1950 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1951 TP_ACPI_HKEY_BRGHTDWN_MASK, 1952 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1953 TP_ACPI_HKEY_VOLDWN_MASK | 1954 TP_ACPI_HKEY_MUTE_MASK, 1955 }; 1956 1957 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1958 struct tp_nvram_state { 1959 u16 thinkpad_toggle:1; 1960 u16 zoom_toggle:1; 1961 u16 display_toggle:1; 1962 u16 thinklight_toggle:1; 1963 u16 hibernate_toggle:1; 1964 u16 displayexp_toggle:1; 1965 u16 display_state:1; 1966 u16 brightness_toggle:1; 1967 u16 volume_toggle:1; 1968 u16 mute:1; 1969 1970 u8 brightness_level; 1971 u8 volume_level; 1972 }; 1973 1974 /* kthread for the hotkey poller */ 1975 static struct task_struct *tpacpi_hotkey_task; 1976 1977 /* 1978 * Acquire mutex to write poller control variables as an 1979 * atomic block. 1980 * 1981 * Increment hotkey_config_change when changing them if you 1982 * want the kthread to forget old state. 1983 * 1984 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1985 */ 1986 static struct mutex hotkey_thread_data_mutex; 1987 static unsigned int hotkey_config_change; 1988 1989 /* 1990 * hotkey poller control variables 1991 * 1992 * Must be atomic or readers will also need to acquire mutex 1993 * 1994 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1995 * should be used only when the changes need to be taken as 1996 * a block, OR when one needs to force the kthread to forget 1997 * old state. 1998 */ 1999 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2000 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2001 2002 #define HOTKEY_CONFIG_CRITICAL_START \ 2003 do { \ 2004 mutex_lock(&hotkey_thread_data_mutex); \ 2005 hotkey_config_change++; \ 2006 } while (0); 2007 #define HOTKEY_CONFIG_CRITICAL_END \ 2008 mutex_unlock(&hotkey_thread_data_mutex); 2009 2010 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2011 2012 #define hotkey_source_mask 0U 2013 #define HOTKEY_CONFIG_CRITICAL_START 2014 #define HOTKEY_CONFIG_CRITICAL_END 2015 2016 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2017 2018 static struct mutex hotkey_mutex; 2019 2020 static enum { /* Reasons for waking up */ 2021 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2022 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2023 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2024 } hotkey_wakeup_reason; 2025 2026 static int hotkey_autosleep_ack; 2027 2028 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2029 static u32 hotkey_all_mask; /* all events supported in fw */ 2030 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2031 static u32 hotkey_reserved_mask; /* events better left disabled */ 2032 static u32 hotkey_driver_mask; /* events needed by the driver */ 2033 static u32 hotkey_user_mask; /* events visible to userspace */ 2034 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2035 2036 static u16 *hotkey_keycode_map; 2037 2038 static struct attribute_set *hotkey_dev_attributes; 2039 2040 static void tpacpi_driver_event(const unsigned int hkey_event); 2041 static void hotkey_driver_event(const unsigned int scancode); 2042 static void hotkey_poll_setup(const bool may_warn); 2043 2044 /* HKEY.MHKG() return bits */ 2045 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2046 enum { 2047 TP_ACPI_MULTI_MODE_INVALID = 0, 2048 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2049 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2050 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2051 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2052 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2053 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2054 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2055 }; 2056 2057 enum { 2058 /* The following modes are considered tablet mode for the purpose of 2059 * reporting the status to userspace. i.e. in all these modes it makes 2060 * sense to disable the laptop input devices such as touchpad and 2061 * keyboard. 2062 */ 2063 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2064 TP_ACPI_MULTI_MODE_STAND | 2065 TP_ACPI_MULTI_MODE_TENT | 2066 TP_ACPI_MULTI_MODE_STAND_TENT, 2067 }; 2068 2069 static int hotkey_get_wlsw(void) 2070 { 2071 int status; 2072 2073 if (!tp_features.hotkey_wlsw) 2074 return -ENODEV; 2075 2076 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2077 if (dbg_wlswemul) 2078 return (tpacpi_wlsw_emulstate) ? 2079 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2080 #endif 2081 2082 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2083 return -EIO; 2084 2085 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2086 } 2087 2088 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2089 { 2090 int type = (s >> 16) & 0xffff; 2091 int value = s & 0xffff; 2092 int mode = TP_ACPI_MULTI_MODE_INVALID; 2093 int valid_modes = 0; 2094 2095 if (has_tablet_mode) 2096 *has_tablet_mode = 0; 2097 2098 switch (type) { 2099 case 1: 2100 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2101 TP_ACPI_MULTI_MODE_TABLET | 2102 TP_ACPI_MULTI_MODE_STAND_TENT; 2103 break; 2104 case 2: 2105 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2106 TP_ACPI_MULTI_MODE_FLAT | 2107 TP_ACPI_MULTI_MODE_TABLET | 2108 TP_ACPI_MULTI_MODE_STAND | 2109 TP_ACPI_MULTI_MODE_TENT; 2110 break; 2111 case 3: 2112 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2113 TP_ACPI_MULTI_MODE_FLAT; 2114 break; 2115 case 4: 2116 case 5: 2117 /* In mode 4, FLAT is not specified as a valid mode. However, 2118 * it can be seen at least on the X1 Yoga 2nd Generation. 2119 */ 2120 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2121 TP_ACPI_MULTI_MODE_FLAT | 2122 TP_ACPI_MULTI_MODE_TABLET | 2123 TP_ACPI_MULTI_MODE_STAND | 2124 TP_ACPI_MULTI_MODE_TENT; 2125 break; 2126 default: 2127 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2128 type, value, TPACPI_MAIL); 2129 return 0; 2130 } 2131 2132 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2133 *has_tablet_mode = 1; 2134 2135 switch (value) { 2136 case 1: 2137 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2138 break; 2139 case 2: 2140 mode = TP_ACPI_MULTI_MODE_FLAT; 2141 break; 2142 case 3: 2143 mode = TP_ACPI_MULTI_MODE_TABLET; 2144 break; 2145 case 4: 2146 if (type == 1) 2147 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2148 else 2149 mode = TP_ACPI_MULTI_MODE_STAND; 2150 break; 2151 case 5: 2152 mode = TP_ACPI_MULTI_MODE_TENT; 2153 break; 2154 default: 2155 if (type == 5 && value == 0xffff) { 2156 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2157 return 0; 2158 } 2159 } 2160 2161 if (!(mode & valid_modes)) { 2162 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2163 value, type, TPACPI_MAIL); 2164 return 0; 2165 } 2166 2167 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2168 } 2169 2170 static int hotkey_get_tablet_mode(int *status) 2171 { 2172 int s; 2173 2174 switch (tp_features.hotkey_tablet) { 2175 case TP_HOTKEY_TABLET_USES_MHKG: 2176 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2177 return -EIO; 2178 2179 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2180 break; 2181 case TP_HOTKEY_TABLET_USES_GMMS: 2182 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2183 return -EIO; 2184 2185 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2186 break; 2187 default: 2188 break; 2189 } 2190 2191 return 0; 2192 } 2193 2194 /* 2195 * Reads current event mask from firmware, and updates 2196 * hotkey_acpi_mask accordingly. Also resets any bits 2197 * from hotkey_user_mask that are unavailable to be 2198 * delivered (shadow requirement of the userspace ABI). 2199 * 2200 * Call with hotkey_mutex held 2201 */ 2202 static int hotkey_mask_get(void) 2203 { 2204 if (tp_features.hotkey_mask) { 2205 u32 m = 0; 2206 2207 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2208 return -EIO; 2209 2210 hotkey_acpi_mask = m; 2211 } else { 2212 /* no mask support doesn't mean no event support... */ 2213 hotkey_acpi_mask = hotkey_all_mask; 2214 } 2215 2216 /* sync userspace-visible mask */ 2217 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2218 2219 return 0; 2220 } 2221 2222 static void hotkey_mask_warn_incomplete_mask(void) 2223 { 2224 /* log only what the user can fix... */ 2225 const u32 wantedmask = hotkey_driver_mask & 2226 ~(hotkey_acpi_mask | hotkey_source_mask) & 2227 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2228 2229 if (wantedmask) 2230 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2231 } 2232 2233 /* 2234 * Set the firmware mask when supported 2235 * 2236 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2237 * 2238 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2239 * 2240 * Call with hotkey_mutex held 2241 */ 2242 static int hotkey_mask_set(u32 mask) 2243 { 2244 int i; 2245 int rc = 0; 2246 2247 const u32 fwmask = mask & ~hotkey_source_mask; 2248 2249 if (tp_features.hotkey_mask) { 2250 for (i = 0; i < 32; i++) { 2251 if (!acpi_evalf(hkey_handle, 2252 NULL, "MHKM", "vdd", i + 1, 2253 !!(mask & (1 << i)))) { 2254 rc = -EIO; 2255 break; 2256 } 2257 } 2258 } 2259 2260 /* 2261 * We *must* make an inconditional call to hotkey_mask_get to 2262 * refresh hotkey_acpi_mask and update hotkey_user_mask 2263 * 2264 * Take the opportunity to also log when we cannot _enable_ 2265 * a given event. 2266 */ 2267 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2268 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2269 fwmask, hotkey_acpi_mask); 2270 } 2271 2272 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2273 hotkey_mask_warn_incomplete_mask(); 2274 2275 return rc; 2276 } 2277 2278 /* 2279 * Sets hotkey_user_mask and tries to set the firmware mask 2280 * 2281 * Call with hotkey_mutex held 2282 */ 2283 static int hotkey_user_mask_set(const u32 mask) 2284 { 2285 int rc; 2286 2287 /* Give people a chance to notice they are doing something that 2288 * is bound to go boom on their users sooner or later */ 2289 if (!tp_warned.hotkey_mask_ff && 2290 (mask == 0xffff || mask == 0xffffff || 2291 mask == 0xffffffff)) { 2292 tp_warned.hotkey_mask_ff = 1; 2293 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2294 mask); 2295 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2296 } 2297 2298 /* Try to enable what the user asked for, plus whatever we need. 2299 * this syncs everything but won't enable bits in hotkey_user_mask */ 2300 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2301 2302 /* Enable the available bits in hotkey_user_mask */ 2303 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2304 2305 return rc; 2306 } 2307 2308 /* 2309 * Sets the driver hotkey mask. 2310 * 2311 * Can be called even if the hotkey subdriver is inactive 2312 */ 2313 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2314 { 2315 int rc; 2316 2317 /* Do the right thing if hotkey_init has not been called yet */ 2318 if (!tp_features.hotkey) { 2319 hotkey_driver_mask = mask; 2320 return 0; 2321 } 2322 2323 mutex_lock(&hotkey_mutex); 2324 2325 HOTKEY_CONFIG_CRITICAL_START 2326 hotkey_driver_mask = mask; 2327 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2328 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2329 #endif 2330 HOTKEY_CONFIG_CRITICAL_END 2331 2332 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2333 ~hotkey_source_mask); 2334 hotkey_poll_setup(true); 2335 2336 mutex_unlock(&hotkey_mutex); 2337 2338 return rc; 2339 } 2340 2341 static int hotkey_status_get(int *status) 2342 { 2343 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2344 return -EIO; 2345 2346 return 0; 2347 } 2348 2349 static int hotkey_status_set(bool enable) 2350 { 2351 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2352 return -EIO; 2353 2354 return 0; 2355 } 2356 2357 static void tpacpi_input_send_tabletsw(void) 2358 { 2359 int state; 2360 2361 if (tp_features.hotkey_tablet && 2362 !hotkey_get_tablet_mode(&state)) { 2363 mutex_lock(&tpacpi_inputdev_send_mutex); 2364 2365 input_report_switch(tpacpi_inputdev, 2366 SW_TABLET_MODE, !!state); 2367 input_sync(tpacpi_inputdev); 2368 2369 mutex_unlock(&tpacpi_inputdev_send_mutex); 2370 } 2371 } 2372 2373 /* Do NOT call without validating scancode first */ 2374 static void tpacpi_input_send_key(const unsigned int scancode) 2375 { 2376 const unsigned int keycode = hotkey_keycode_map[scancode]; 2377 2378 if (keycode != KEY_RESERVED) { 2379 mutex_lock(&tpacpi_inputdev_send_mutex); 2380 2381 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2382 input_report_key(tpacpi_inputdev, keycode, 1); 2383 input_sync(tpacpi_inputdev); 2384 2385 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2386 input_report_key(tpacpi_inputdev, keycode, 0); 2387 input_sync(tpacpi_inputdev); 2388 2389 mutex_unlock(&tpacpi_inputdev_send_mutex); 2390 } 2391 } 2392 2393 /* Do NOT call without validating scancode first */ 2394 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2395 { 2396 hotkey_driver_event(scancode); 2397 if (hotkey_user_mask & (1 << scancode)) 2398 tpacpi_input_send_key(scancode); 2399 } 2400 2401 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2402 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2403 2404 /* Do NOT call without validating scancode first */ 2405 static void tpacpi_hotkey_send_key(unsigned int scancode) 2406 { 2407 tpacpi_input_send_key_masked(scancode); 2408 } 2409 2410 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2411 { 2412 u8 d; 2413 2414 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2415 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2416 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2417 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2418 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2419 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2420 } 2421 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2422 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2423 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2424 } 2425 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2426 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2427 n->displayexp_toggle = 2428 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2429 } 2430 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2431 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2432 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2433 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2434 n->brightness_toggle = 2435 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2436 } 2437 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2438 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2439 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2440 >> TP_NVRAM_POS_LEVEL_VOLUME; 2441 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2442 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2443 } 2444 } 2445 2446 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2447 do { \ 2448 if ((event_mask & (1 << __scancode)) && \ 2449 oldn->__member != newn->__member) \ 2450 tpacpi_hotkey_send_key(__scancode); \ 2451 } while (0) 2452 2453 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2454 do { \ 2455 if (event_mask & (1 << __scancode)) \ 2456 tpacpi_hotkey_send_key(__scancode); \ 2457 } while (0) 2458 2459 static void issue_volchange(const unsigned int oldvol, 2460 const unsigned int newvol, 2461 const u32 event_mask) 2462 { 2463 unsigned int i = oldvol; 2464 2465 while (i > newvol) { 2466 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2467 i--; 2468 } 2469 while (i < newvol) { 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2471 i++; 2472 } 2473 } 2474 2475 static void issue_brightnesschange(const unsigned int oldbrt, 2476 const unsigned int newbrt, 2477 const u32 event_mask) 2478 { 2479 unsigned int i = oldbrt; 2480 2481 while (i > newbrt) { 2482 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2483 i--; 2484 } 2485 while (i < newbrt) { 2486 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2487 i++; 2488 } 2489 } 2490 2491 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2492 struct tp_nvram_state *newn, 2493 const u32 event_mask) 2494 { 2495 2496 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2497 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2498 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2499 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2500 2501 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2502 2503 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2504 2505 /* 2506 * Handle volume 2507 * 2508 * This code is supposed to duplicate the IBM firmware behaviour: 2509 * - Pressing MUTE issues mute hotkey message, even when already mute 2510 * - Pressing Volume up/down issues volume up/down hotkey messages, 2511 * even when already at maximum or minimum volume 2512 * - The act of unmuting issues volume up/down notification, 2513 * depending which key was used to unmute 2514 * 2515 * We are constrained to what the NVRAM can tell us, which is not much 2516 * and certainly not enough if more than one volume hotkey was pressed 2517 * since the last poll cycle. 2518 * 2519 * Just to make our life interesting, some newer Lenovo ThinkPads have 2520 * bugs in the BIOS and may fail to update volume_toggle properly. 2521 */ 2522 if (newn->mute) { 2523 /* muted */ 2524 if (!oldn->mute || 2525 oldn->volume_toggle != newn->volume_toggle || 2526 oldn->volume_level != newn->volume_level) { 2527 /* recently muted, or repeated mute keypress, or 2528 * multiple presses ending in mute */ 2529 issue_volchange(oldn->volume_level, newn->volume_level, 2530 event_mask); 2531 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2532 } 2533 } else { 2534 /* unmute */ 2535 if (oldn->mute) { 2536 /* recently unmuted, issue 'unmute' keypress */ 2537 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2538 } 2539 if (oldn->volume_level != newn->volume_level) { 2540 issue_volchange(oldn->volume_level, newn->volume_level, 2541 event_mask); 2542 } else if (oldn->volume_toggle != newn->volume_toggle) { 2543 /* repeated vol up/down keypress at end of scale ? */ 2544 if (newn->volume_level == 0) 2545 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2546 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2547 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2548 } 2549 } 2550 2551 /* handle brightness */ 2552 if (oldn->brightness_level != newn->brightness_level) { 2553 issue_brightnesschange(oldn->brightness_level, 2554 newn->brightness_level, event_mask); 2555 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2556 /* repeated key presses that didn't change state */ 2557 if (newn->brightness_level == 0) 2558 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2559 else if (newn->brightness_level >= bright_maxlvl 2560 && !tp_features.bright_unkfw) 2561 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2562 } 2563 2564 #undef TPACPI_COMPARE_KEY 2565 #undef TPACPI_MAY_SEND_KEY 2566 } 2567 2568 /* 2569 * Polling driver 2570 * 2571 * We track all events in hotkey_source_mask all the time, since 2572 * most of them are edge-based. We only issue those requested by 2573 * hotkey_user_mask or hotkey_driver_mask, though. 2574 */ 2575 static int hotkey_kthread(void *data) 2576 { 2577 struct tp_nvram_state s[2] = { 0 }; 2578 u32 poll_mask, event_mask; 2579 unsigned int si, so; 2580 unsigned long t; 2581 unsigned int change_detector; 2582 unsigned int poll_freq; 2583 bool was_frozen; 2584 2585 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2586 goto exit; 2587 2588 set_freezable(); 2589 2590 so = 0; 2591 si = 1; 2592 t = 0; 2593 2594 /* Initial state for compares */ 2595 mutex_lock(&hotkey_thread_data_mutex); 2596 change_detector = hotkey_config_change; 2597 poll_mask = hotkey_source_mask; 2598 event_mask = hotkey_source_mask & 2599 (hotkey_driver_mask | hotkey_user_mask); 2600 poll_freq = hotkey_poll_freq; 2601 mutex_unlock(&hotkey_thread_data_mutex); 2602 hotkey_read_nvram(&s[so], poll_mask); 2603 2604 while (!kthread_should_stop()) { 2605 if (t == 0) { 2606 if (likely(poll_freq)) 2607 t = 1000/poll_freq; 2608 else 2609 t = 100; /* should never happen... */ 2610 } 2611 t = msleep_interruptible(t); 2612 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2613 break; 2614 2615 if (t > 0 && !was_frozen) 2616 continue; 2617 2618 mutex_lock(&hotkey_thread_data_mutex); 2619 if (was_frozen || hotkey_config_change != change_detector) { 2620 /* forget old state on thaw or config change */ 2621 si = so; 2622 t = 0; 2623 change_detector = hotkey_config_change; 2624 } 2625 poll_mask = hotkey_source_mask; 2626 event_mask = hotkey_source_mask & 2627 (hotkey_driver_mask | hotkey_user_mask); 2628 poll_freq = hotkey_poll_freq; 2629 mutex_unlock(&hotkey_thread_data_mutex); 2630 2631 if (likely(poll_mask)) { 2632 hotkey_read_nvram(&s[si], poll_mask); 2633 if (likely(si != so)) { 2634 hotkey_compare_and_issue_event(&s[so], &s[si], 2635 event_mask); 2636 } 2637 } 2638 2639 so = si; 2640 si ^= 1; 2641 } 2642 2643 exit: 2644 return 0; 2645 } 2646 2647 /* call with hotkey_mutex held */ 2648 static void hotkey_poll_stop_sync(void) 2649 { 2650 if (tpacpi_hotkey_task) { 2651 kthread_stop(tpacpi_hotkey_task); 2652 tpacpi_hotkey_task = NULL; 2653 } 2654 } 2655 2656 /* call with hotkey_mutex held */ 2657 static void hotkey_poll_setup(const bool may_warn) 2658 { 2659 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2660 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2661 2662 if (hotkey_poll_freq > 0 && 2663 (poll_driver_mask || 2664 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2665 if (!tpacpi_hotkey_task) { 2666 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2667 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2668 if (IS_ERR(tpacpi_hotkey_task)) { 2669 tpacpi_hotkey_task = NULL; 2670 pr_err("could not create kernel thread for hotkey polling\n"); 2671 } 2672 } 2673 } else { 2674 hotkey_poll_stop_sync(); 2675 if (may_warn && (poll_driver_mask || poll_user_mask) && 2676 hotkey_poll_freq == 0) { 2677 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2678 poll_user_mask, poll_driver_mask); 2679 } 2680 } 2681 } 2682 2683 static void hotkey_poll_setup_safe(const bool may_warn) 2684 { 2685 mutex_lock(&hotkey_mutex); 2686 hotkey_poll_setup(may_warn); 2687 mutex_unlock(&hotkey_mutex); 2688 } 2689 2690 /* call with hotkey_mutex held */ 2691 static void hotkey_poll_set_freq(unsigned int freq) 2692 { 2693 if (!freq) 2694 hotkey_poll_stop_sync(); 2695 2696 hotkey_poll_freq = freq; 2697 } 2698 2699 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2700 2701 static void hotkey_poll_setup(const bool __unused) 2702 { 2703 } 2704 2705 static void hotkey_poll_setup_safe(const bool __unused) 2706 { 2707 } 2708 2709 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2710 2711 static int hotkey_inputdev_open(struct input_dev *dev) 2712 { 2713 switch (tpacpi_lifecycle) { 2714 case TPACPI_LIFE_INIT: 2715 case TPACPI_LIFE_RUNNING: 2716 hotkey_poll_setup_safe(false); 2717 return 0; 2718 case TPACPI_LIFE_EXITING: 2719 return -EBUSY; 2720 } 2721 2722 /* Should only happen if tpacpi_lifecycle is corrupt */ 2723 BUG(); 2724 return -EBUSY; 2725 } 2726 2727 static void hotkey_inputdev_close(struct input_dev *dev) 2728 { 2729 /* disable hotkey polling when possible */ 2730 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2731 !(hotkey_source_mask & hotkey_driver_mask)) 2732 hotkey_poll_setup_safe(false); 2733 } 2734 2735 /* sysfs hotkey enable ------------------------------------------------- */ 2736 static ssize_t hotkey_enable_show(struct device *dev, 2737 struct device_attribute *attr, 2738 char *buf) 2739 { 2740 int res, status; 2741 2742 printk_deprecated_attribute("hotkey_enable", 2743 "Hotkey reporting is always enabled"); 2744 2745 res = hotkey_status_get(&status); 2746 if (res) 2747 return res; 2748 2749 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2750 } 2751 2752 static ssize_t hotkey_enable_store(struct device *dev, 2753 struct device_attribute *attr, 2754 const char *buf, size_t count) 2755 { 2756 unsigned long t; 2757 2758 printk_deprecated_attribute("hotkey_enable", 2759 "Hotkeys can be disabled through hotkey_mask"); 2760 2761 if (parse_strtoul(buf, 1, &t)) 2762 return -EINVAL; 2763 2764 if (t == 0) 2765 return -EPERM; 2766 2767 return count; 2768 } 2769 2770 static DEVICE_ATTR_RW(hotkey_enable); 2771 2772 /* sysfs hotkey mask --------------------------------------------------- */ 2773 static ssize_t hotkey_mask_show(struct device *dev, 2774 struct device_attribute *attr, 2775 char *buf) 2776 { 2777 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2778 } 2779 2780 static ssize_t hotkey_mask_store(struct device *dev, 2781 struct device_attribute *attr, 2782 const char *buf, size_t count) 2783 { 2784 unsigned long t; 2785 int res; 2786 2787 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2788 return -EINVAL; 2789 2790 if (mutex_lock_killable(&hotkey_mutex)) 2791 return -ERESTARTSYS; 2792 2793 res = hotkey_user_mask_set(t); 2794 2795 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2796 hotkey_poll_setup(true); 2797 #endif 2798 2799 mutex_unlock(&hotkey_mutex); 2800 2801 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2802 2803 return (res) ? res : count; 2804 } 2805 2806 static DEVICE_ATTR_RW(hotkey_mask); 2807 2808 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2809 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2810 struct device_attribute *attr, 2811 char *buf) 2812 { 2813 return sprintf(buf, "0\n"); 2814 } 2815 2816 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2817 2818 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2819 static ssize_t hotkey_bios_mask_show(struct device *dev, 2820 struct device_attribute *attr, 2821 char *buf) 2822 { 2823 printk_deprecated_attribute("hotkey_bios_mask", 2824 "This attribute is useless."); 2825 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2826 } 2827 2828 static DEVICE_ATTR_RO(hotkey_bios_mask); 2829 2830 /* sysfs hotkey all_mask ----------------------------------------------- */ 2831 static ssize_t hotkey_all_mask_show(struct device *dev, 2832 struct device_attribute *attr, 2833 char *buf) 2834 { 2835 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2836 hotkey_all_mask | hotkey_source_mask); 2837 } 2838 2839 static DEVICE_ATTR_RO(hotkey_all_mask); 2840 2841 /* sysfs hotkey all_mask ----------------------------------------------- */ 2842 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2843 struct device_attribute *attr, 2844 char *buf) 2845 { 2846 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2847 hotkey_adaptive_all_mask | hotkey_source_mask); 2848 } 2849 2850 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2851 2852 /* sysfs hotkey recommended_mask --------------------------------------- */ 2853 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2854 struct device_attribute *attr, 2855 char *buf) 2856 { 2857 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2858 (hotkey_all_mask | hotkey_source_mask) 2859 & ~hotkey_reserved_mask); 2860 } 2861 2862 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2863 2864 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2865 2866 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2867 static ssize_t hotkey_source_mask_show(struct device *dev, 2868 struct device_attribute *attr, 2869 char *buf) 2870 { 2871 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2872 } 2873 2874 static ssize_t hotkey_source_mask_store(struct device *dev, 2875 struct device_attribute *attr, 2876 const char *buf, size_t count) 2877 { 2878 unsigned long t; 2879 u32 r_ev; 2880 int rc; 2881 2882 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2883 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2884 return -EINVAL; 2885 2886 if (mutex_lock_killable(&hotkey_mutex)) 2887 return -ERESTARTSYS; 2888 2889 HOTKEY_CONFIG_CRITICAL_START 2890 hotkey_source_mask = t; 2891 HOTKEY_CONFIG_CRITICAL_END 2892 2893 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2894 ~hotkey_source_mask); 2895 hotkey_poll_setup(true); 2896 2897 /* check if events needed by the driver got disabled */ 2898 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2899 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2900 2901 mutex_unlock(&hotkey_mutex); 2902 2903 if (rc < 0) 2904 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2905 2906 if (r_ev) 2907 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2908 r_ev); 2909 2910 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2911 2912 return (rc < 0) ? rc : count; 2913 } 2914 2915 static DEVICE_ATTR_RW(hotkey_source_mask); 2916 2917 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2918 static ssize_t hotkey_poll_freq_show(struct device *dev, 2919 struct device_attribute *attr, 2920 char *buf) 2921 { 2922 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2923 } 2924 2925 static ssize_t hotkey_poll_freq_store(struct device *dev, 2926 struct device_attribute *attr, 2927 const char *buf, size_t count) 2928 { 2929 unsigned long t; 2930 2931 if (parse_strtoul(buf, 25, &t)) 2932 return -EINVAL; 2933 2934 if (mutex_lock_killable(&hotkey_mutex)) 2935 return -ERESTARTSYS; 2936 2937 hotkey_poll_set_freq(t); 2938 hotkey_poll_setup(true); 2939 2940 mutex_unlock(&hotkey_mutex); 2941 2942 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2943 2944 return count; 2945 } 2946 2947 static DEVICE_ATTR_RW(hotkey_poll_freq); 2948 2949 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2950 2951 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2952 static ssize_t hotkey_radio_sw_show(struct device *dev, 2953 struct device_attribute *attr, 2954 char *buf) 2955 { 2956 int res; 2957 res = hotkey_get_wlsw(); 2958 if (res < 0) 2959 return res; 2960 2961 /* Opportunistic update */ 2962 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2963 2964 return snprintf(buf, PAGE_SIZE, "%d\n", 2965 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2966 } 2967 2968 static DEVICE_ATTR_RO(hotkey_radio_sw); 2969 2970 static void hotkey_radio_sw_notify_change(void) 2971 { 2972 if (tp_features.hotkey_wlsw) 2973 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2974 "hotkey_radio_sw"); 2975 } 2976 2977 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2978 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2979 struct device_attribute *attr, 2980 char *buf) 2981 { 2982 int res, s; 2983 res = hotkey_get_tablet_mode(&s); 2984 if (res < 0) 2985 return res; 2986 2987 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2988 } 2989 2990 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2991 2992 static void hotkey_tablet_mode_notify_change(void) 2993 { 2994 if (tp_features.hotkey_tablet) 2995 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2996 "hotkey_tablet_mode"); 2997 } 2998 2999 /* sysfs wakeup reason (pollable) -------------------------------------- */ 3000 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 3001 struct device_attribute *attr, 3002 char *buf) 3003 { 3004 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 3005 } 3006 3007 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 3008 3009 static void hotkey_wakeup_reason_notify_change(void) 3010 { 3011 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3012 "wakeup_reason"); 3013 } 3014 3015 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3016 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3017 struct device_attribute *attr, 3018 char *buf) 3019 { 3020 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3021 } 3022 3023 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3024 hotkey_wakeup_hotunplug_complete_show, NULL); 3025 3026 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3027 { 3028 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3029 "wakeup_hotunplug_complete"); 3030 } 3031 3032 /* sysfs adaptive kbd mode --------------------------------------------- */ 3033 3034 static int adaptive_keyboard_get_mode(void); 3035 static int adaptive_keyboard_set_mode(int new_mode); 3036 3037 enum ADAPTIVE_KEY_MODE { 3038 HOME_MODE, 3039 WEB_BROWSER_MODE, 3040 WEB_CONFERENCE_MODE, 3041 FUNCTION_MODE, 3042 LAYFLAT_MODE 3043 }; 3044 3045 static ssize_t adaptive_kbd_mode_show(struct device *dev, 3046 struct device_attribute *attr, 3047 char *buf) 3048 { 3049 int current_mode; 3050 3051 current_mode = adaptive_keyboard_get_mode(); 3052 if (current_mode < 0) 3053 return current_mode; 3054 3055 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3056 } 3057 3058 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3059 struct device_attribute *attr, 3060 const char *buf, size_t count) 3061 { 3062 unsigned long t; 3063 int res; 3064 3065 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3066 return -EINVAL; 3067 3068 res = adaptive_keyboard_set_mode(t); 3069 return (res < 0) ? res : count; 3070 } 3071 3072 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3073 3074 static struct attribute *adaptive_kbd_attributes[] = { 3075 &dev_attr_adaptive_kbd_mode.attr, 3076 NULL 3077 }; 3078 3079 static const struct attribute_group adaptive_kbd_attr_group = { 3080 .attrs = adaptive_kbd_attributes, 3081 }; 3082 3083 /* --------------------------------------------------------------------- */ 3084 3085 static struct attribute *hotkey_attributes[] __initdata = { 3086 &dev_attr_hotkey_enable.attr, 3087 &dev_attr_hotkey_bios_enabled.attr, 3088 &dev_attr_hotkey_bios_mask.attr, 3089 &dev_attr_wakeup_reason.attr, 3090 &dev_attr_wakeup_hotunplug_complete.attr, 3091 &dev_attr_hotkey_mask.attr, 3092 &dev_attr_hotkey_all_mask.attr, 3093 &dev_attr_hotkey_adaptive_all_mask.attr, 3094 &dev_attr_hotkey_recommended_mask.attr, 3095 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3096 &dev_attr_hotkey_source_mask.attr, 3097 &dev_attr_hotkey_poll_freq.attr, 3098 #endif 3099 }; 3100 3101 /* 3102 * Sync both the hw and sw blocking state of all switches 3103 */ 3104 static void tpacpi_send_radiosw_update(void) 3105 { 3106 int wlsw; 3107 3108 /* 3109 * We must sync all rfkill controllers *before* issuing any 3110 * rfkill input events, or we will race the rfkill core input 3111 * handler. 3112 * 3113 * tpacpi_inputdev_send_mutex works as a synchronization point 3114 * for the above. 3115 * 3116 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3117 */ 3118 3119 wlsw = hotkey_get_wlsw(); 3120 3121 /* Sync hw blocking state first if it is hw-blocked */ 3122 if (wlsw == TPACPI_RFK_RADIO_OFF) 3123 tpacpi_rfk_update_hwblock_state(true); 3124 3125 /* Sync sw blocking state */ 3126 tpacpi_rfk_update_swstate_all(); 3127 3128 /* Sync hw blocking state last if it is hw-unblocked */ 3129 if (wlsw == TPACPI_RFK_RADIO_ON) 3130 tpacpi_rfk_update_hwblock_state(false); 3131 3132 /* Issue rfkill input event for WLSW switch */ 3133 if (!(wlsw < 0)) { 3134 mutex_lock(&tpacpi_inputdev_send_mutex); 3135 3136 input_report_switch(tpacpi_inputdev, 3137 SW_RFKILL_ALL, (wlsw > 0)); 3138 input_sync(tpacpi_inputdev); 3139 3140 mutex_unlock(&tpacpi_inputdev_send_mutex); 3141 } 3142 3143 /* 3144 * this can be unconditional, as we will poll state again 3145 * if userspace uses the notify to read data 3146 */ 3147 hotkey_radio_sw_notify_change(); 3148 } 3149 3150 static void hotkey_exit(void) 3151 { 3152 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3153 mutex_lock(&hotkey_mutex); 3154 hotkey_poll_stop_sync(); 3155 mutex_unlock(&hotkey_mutex); 3156 #endif 3157 3158 if (hotkey_dev_attributes) 3159 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3160 3161 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3162 "restoring original HKEY status and mask\n"); 3163 /* yes, there is a bitwise or below, we want the 3164 * functions to be called even if one of them fail */ 3165 if (((tp_features.hotkey_mask && 3166 hotkey_mask_set(hotkey_orig_mask)) | 3167 hotkey_status_set(false)) != 0) 3168 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3169 } 3170 3171 static void __init hotkey_unmap(const unsigned int scancode) 3172 { 3173 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3174 clear_bit(hotkey_keycode_map[scancode], 3175 tpacpi_inputdev->keybit); 3176 hotkey_keycode_map[scancode] = KEY_RESERVED; 3177 } 3178 } 3179 3180 /* 3181 * HKEY quirks: 3182 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3183 */ 3184 3185 #define TPACPI_HK_Q_INIMASK 0x0001 3186 3187 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3188 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3189 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3190 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3191 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3192 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3193 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3194 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3195 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3196 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3197 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3198 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3199 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3200 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3201 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3202 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3203 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3204 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3205 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3206 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3207 }; 3208 3209 typedef u16 tpacpi_keymap_entry_t; 3210 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3211 3212 static int hotkey_init_tablet_mode(void) 3213 { 3214 int in_tablet_mode = 0, res; 3215 char *type = NULL; 3216 3217 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3218 int has_tablet_mode; 3219 3220 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3221 &has_tablet_mode); 3222 /* 3223 * The Yoga 11e series has 2 accelerometers described by a 3224 * BOSC0200 ACPI node. This setup relies on a Windows service 3225 * which calls special ACPI methods on this node to report 3226 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3227 * does not support this, so skip the hotkey on these models. 3228 */ 3229 if (has_tablet_mode && !acpi_dev_present("BOSC0200", "1", -1)) 3230 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3231 type = "GMMS"; 3232 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3233 /* For X41t, X60t, X61t Tablets... */ 3234 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3235 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3236 type = "MHKG"; 3237 } 3238 3239 if (!tp_features.hotkey_tablet) 3240 return 0; 3241 3242 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3243 type, in_tablet_mode ? "tablet" : "laptop"); 3244 3245 res = add_to_attr_set(hotkey_dev_attributes, 3246 &dev_attr_hotkey_tablet_mode.attr); 3247 if (res) 3248 return -1; 3249 3250 return in_tablet_mode; 3251 } 3252 3253 static int __init hotkey_init(struct ibm_init_struct *iibm) 3254 { 3255 /* Requirements for changing the default keymaps: 3256 * 3257 * 1. Many of the keys are mapped to KEY_RESERVED for very 3258 * good reasons. Do not change them unless you have deep 3259 * knowledge on the IBM and Lenovo ThinkPad firmware for 3260 * the various ThinkPad models. The driver behaves 3261 * differently for KEY_RESERVED: such keys have their 3262 * hot key mask *unset* in mask_recommended, and also 3263 * in the initial hot key mask programmed into the 3264 * firmware at driver load time, which means the firm- 3265 * ware may react very differently if you change them to 3266 * something else; 3267 * 3268 * 2. You must be subscribed to the linux-thinkpad and 3269 * ibm-acpi-devel mailing lists, and you should read the 3270 * list archives since 2007 if you want to change the 3271 * keymaps. This requirement exists so that you will 3272 * know the past history of problems with the thinkpad- 3273 * acpi driver keymaps, and also that you will be 3274 * listening to any bug reports; 3275 * 3276 * 3. Do not send thinkpad-acpi specific patches directly to 3277 * for merging, *ever*. Send them to the linux-acpi 3278 * mailinglist for comments. Merging is to be done only 3279 * through acpi-test and the ACPI maintainer. 3280 * 3281 * If the above is too much to ask, don't change the keymap. 3282 * Ask the thinkpad-acpi maintainer to do it, instead. 3283 */ 3284 3285 enum keymap_index { 3286 TPACPI_KEYMAP_IBM_GENERIC = 0, 3287 TPACPI_KEYMAP_LENOVO_GENERIC, 3288 }; 3289 3290 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3291 /* Generic keymap for IBM ThinkPads */ 3292 [TPACPI_KEYMAP_IBM_GENERIC] = { 3293 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3294 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3295 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3296 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3297 3298 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3299 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3300 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3301 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3302 3303 /* brightness: firmware always reacts to them */ 3304 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3305 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3306 3307 /* Thinklight: firmware always react to it */ 3308 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3309 3310 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3311 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3312 3313 /* Volume: firmware always react to it and reprograms 3314 * the built-in *extra* mixer. Never map it to control 3315 * another mixer by default. */ 3316 KEY_RESERVED, /* 0x14: VOLUME UP */ 3317 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3318 KEY_RESERVED, /* 0x16: MUTE */ 3319 3320 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3321 3322 /* (assignments unknown, please report if found) */ 3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3325 3326 /* No assignments, only used for Adaptive keyboards. */ 3327 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 3333 /* No assignment, used for newer Lenovo models */ 3334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3336 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3337 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3338 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3339 KEY_UNKNOWN, KEY_UNKNOWN 3340 3341 }, 3342 3343 /* Generic keymap for Lenovo ThinkPads */ 3344 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3345 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3346 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3347 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3348 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3349 3350 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3351 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3352 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3353 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3354 3355 /* These should be enabled --only-- when ACPI video 3356 * is disabled (i.e. in "vendor" mode), and are handled 3357 * in a special way by the init code */ 3358 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3359 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3360 3361 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3362 3363 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3364 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3365 3366 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3367 * react to it and reprograms the built-in *extra* mixer. 3368 * Never map it to control another mixer by default. 3369 * 3370 * T60?, T61, R60?, R61: firmware and EC tries to send 3371 * these over the regular keyboard, so these are no-ops, 3372 * but there are still weird bugs re. MUTE, so do not 3373 * change unless you get test reports from all Lenovo 3374 * models. May cause the BIOS to interfere with the 3375 * HDA mixer. 3376 */ 3377 KEY_RESERVED, /* 0x14: VOLUME UP */ 3378 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3379 KEY_RESERVED, /* 0x16: MUTE */ 3380 3381 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3382 3383 /* (assignments unknown, please report if found) */ 3384 KEY_UNKNOWN, KEY_UNKNOWN, 3385 3386 /* 3387 * The mic mute button only sends 0x1a. It does not 3388 * automatically mute the mic or change the mute light. 3389 */ 3390 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3391 3392 /* (assignments unknown, please report if found) */ 3393 KEY_UNKNOWN, 3394 3395 /* Extra keys in use since the X240 / T440 / T540 */ 3396 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3397 3398 /* 3399 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3400 * The first item in this list is the Mute button which is 3401 * emitted with 0x103 through 3402 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3403 * symbol is held. 3404 * We'll need to offset those by 0x20. 3405 */ 3406 KEY_RESERVED, /* Mute held, 0x103 */ 3407 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3408 KEY_RESERVED, /* Clipping tool */ 3409 KEY_RESERVED, /* Cloud */ 3410 KEY_RESERVED, 3411 KEY_VOICECOMMAND, /* Voice */ 3412 KEY_RESERVED, 3413 KEY_RESERVED, /* Gestures */ 3414 KEY_RESERVED, 3415 KEY_RESERVED, 3416 KEY_RESERVED, 3417 KEY_CONFIG, /* Settings */ 3418 KEY_RESERVED, /* New tab */ 3419 KEY_REFRESH, /* Reload */ 3420 KEY_BACK, /* Back */ 3421 KEY_RESERVED, /* Microphone down */ 3422 KEY_RESERVED, /* Microphone up */ 3423 KEY_RESERVED, /* Microphone cancellation */ 3424 KEY_RESERVED, /* Camera mode */ 3425 KEY_RESERVED, /* Rotate display, 0x116 */ 3426 3427 /* 3428 * These are found in 2017 models (e.g. T470s, X270). 3429 * The lowest known value is 0x311, which according to 3430 * the manual should launch a user defined favorite 3431 * application. 3432 * 3433 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3434 * corresponding to 0x34. 3435 */ 3436 3437 /* (assignments unknown, please report if found) */ 3438 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3439 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3440 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3441 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3442 KEY_UNKNOWN, 3443 3444 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3445 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3446 KEY_CALC, /* Calculator (above numpad, P52) */ 3447 KEY_BLUETOOTH, /* Bluetooth */ 3448 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3449 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3450 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3451 KEY_PICKUP_PHONE, /* Answer incoming call */ 3452 KEY_HANGUP_PHONE, /* Decline incoming call */ 3453 }, 3454 }; 3455 3456 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3457 /* Generic maps (fallback) */ 3458 { 3459 .vendor = PCI_VENDOR_ID_IBM, 3460 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3461 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3462 }, 3463 { 3464 .vendor = PCI_VENDOR_ID_LENOVO, 3465 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3466 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3467 }, 3468 }; 3469 3470 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3471 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3472 3473 int res, i; 3474 int status; 3475 int hkeyv; 3476 bool radiosw_state = false; 3477 bool tabletsw_state = false; 3478 3479 unsigned long quirks; 3480 unsigned long keymap_id; 3481 3482 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3483 "initializing hotkey subdriver\n"); 3484 3485 BUG_ON(!tpacpi_inputdev); 3486 BUG_ON(tpacpi_inputdev->open != NULL || 3487 tpacpi_inputdev->close != NULL); 3488 3489 TPACPI_ACPIHANDLE_INIT(hkey); 3490 mutex_init(&hotkey_mutex); 3491 3492 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3493 mutex_init(&hotkey_thread_data_mutex); 3494 #endif 3495 3496 /* hotkey not supported on 570 */ 3497 tp_features.hotkey = hkey_handle != NULL; 3498 3499 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3500 "hotkeys are %s\n", 3501 str_supported(tp_features.hotkey)); 3502 3503 if (!tp_features.hotkey) 3504 return 1; 3505 3506 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3507 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3508 3509 tpacpi_disable_brightness_delay(); 3510 3511 /* MUST have enough space for all attributes to be added to 3512 * hotkey_dev_attributes */ 3513 hotkey_dev_attributes = create_attr_set( 3514 ARRAY_SIZE(hotkey_attributes) + 2, 3515 NULL); 3516 if (!hotkey_dev_attributes) 3517 return -ENOMEM; 3518 res = add_many_to_attr_set(hotkey_dev_attributes, 3519 hotkey_attributes, 3520 ARRAY_SIZE(hotkey_attributes)); 3521 if (res) 3522 goto err_exit; 3523 3524 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3525 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3526 for HKEY interface version 0x100 */ 3527 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3528 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3529 "firmware HKEY interface version: 0x%x\n", 3530 hkeyv); 3531 3532 switch (hkeyv >> 8) { 3533 case 1: 3534 /* 3535 * MHKV 0x100 in A31, R40, R40e, 3536 * T4x, X31, and later 3537 */ 3538 3539 /* Paranoia check AND init hotkey_all_mask */ 3540 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3541 "MHKA", "qd")) { 3542 pr_err("missing MHKA handler, please report this to %s\n", 3543 TPACPI_MAIL); 3544 /* Fallback: pre-init for FN+F3,F4,F12 */ 3545 hotkey_all_mask = 0x080cU; 3546 } else { 3547 tp_features.hotkey_mask = 1; 3548 } 3549 break; 3550 3551 case 2: 3552 /* 3553 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3554 */ 3555 3556 /* Paranoia check AND init hotkey_all_mask */ 3557 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3558 "MHKA", "dd", 1)) { 3559 pr_err("missing MHKA handler, please report this to %s\n", 3560 TPACPI_MAIL); 3561 /* Fallback: pre-init for FN+F3,F4,F12 */ 3562 hotkey_all_mask = 0x080cU; 3563 } else { 3564 tp_features.hotkey_mask = 1; 3565 } 3566 3567 /* 3568 * Check if we have an adaptive keyboard, like on the 3569 * Lenovo Carbon X1 2014 (2nd Gen). 3570 */ 3571 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3572 "MHKA", "dd", 2)) { 3573 if (hotkey_adaptive_all_mask != 0) { 3574 tp_features.has_adaptive_kbd = true; 3575 res = sysfs_create_group( 3576 &tpacpi_pdev->dev.kobj, 3577 &adaptive_kbd_attr_group); 3578 if (res) 3579 goto err_exit; 3580 } 3581 } else { 3582 tp_features.has_adaptive_kbd = false; 3583 hotkey_adaptive_all_mask = 0x0U; 3584 } 3585 break; 3586 3587 default: 3588 pr_err("unknown version of the HKEY interface: 0x%x\n", 3589 hkeyv); 3590 pr_err("please report this to %s\n", TPACPI_MAIL); 3591 break; 3592 } 3593 } 3594 3595 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3596 "hotkey masks are %s\n", 3597 str_supported(tp_features.hotkey_mask)); 3598 3599 /* Init hotkey_all_mask if not initialized yet */ 3600 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3601 (quirks & TPACPI_HK_Q_INIMASK)) 3602 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3603 3604 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3605 if (tp_features.hotkey_mask) { 3606 /* hotkey_source_mask *must* be zero for 3607 * the first hotkey_mask_get to return hotkey_orig_mask */ 3608 res = hotkey_mask_get(); 3609 if (res) 3610 goto err_exit; 3611 3612 hotkey_orig_mask = hotkey_acpi_mask; 3613 } else { 3614 hotkey_orig_mask = hotkey_all_mask; 3615 hotkey_acpi_mask = hotkey_all_mask; 3616 } 3617 3618 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3619 if (dbg_wlswemul) { 3620 tp_features.hotkey_wlsw = 1; 3621 radiosw_state = !!tpacpi_wlsw_emulstate; 3622 pr_info("radio switch emulation enabled\n"); 3623 } else 3624 #endif 3625 /* Not all thinkpads have a hardware radio switch */ 3626 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3627 tp_features.hotkey_wlsw = 1; 3628 radiosw_state = !!status; 3629 pr_info("radio switch found; radios are %s\n", 3630 enabled(status, 0)); 3631 } 3632 if (tp_features.hotkey_wlsw) 3633 res = add_to_attr_set(hotkey_dev_attributes, 3634 &dev_attr_hotkey_radio_sw.attr); 3635 3636 res = hotkey_init_tablet_mode(); 3637 if (res < 0) 3638 goto err_exit; 3639 3640 tabletsw_state = res; 3641 3642 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3643 &tpacpi_pdev->dev.kobj); 3644 if (res) 3645 goto err_exit; 3646 3647 /* Set up key map */ 3648 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3649 ARRAY_SIZE(tpacpi_keymap_qtable)); 3650 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3651 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3652 "using keymap number %lu\n", keymap_id); 3653 3654 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3655 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3656 if (!hotkey_keycode_map) { 3657 pr_err("failed to allocate memory for key map\n"); 3658 res = -ENOMEM; 3659 goto err_exit; 3660 } 3661 3662 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3663 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3664 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3665 tpacpi_inputdev->keycode = hotkey_keycode_map; 3666 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3667 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3668 input_set_capability(tpacpi_inputdev, EV_KEY, 3669 hotkey_keycode_map[i]); 3670 } else { 3671 if (i < sizeof(hotkey_reserved_mask)*8) 3672 hotkey_reserved_mask |= 1 << i; 3673 } 3674 } 3675 3676 if (tp_features.hotkey_wlsw) { 3677 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3678 input_report_switch(tpacpi_inputdev, 3679 SW_RFKILL_ALL, radiosw_state); 3680 } 3681 if (tp_features.hotkey_tablet) { 3682 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3683 input_report_switch(tpacpi_inputdev, 3684 SW_TABLET_MODE, tabletsw_state); 3685 } 3686 3687 /* Do not issue duplicate brightness change events to 3688 * userspace. tpacpi_detect_brightness_capabilities() must have 3689 * been called before this point */ 3690 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3691 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3692 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3693 3694 /* Disable brightness up/down on Lenovo thinkpads when 3695 * ACPI is handling them, otherwise it is plain impossible 3696 * for userspace to do something even remotely sane */ 3697 hotkey_reserved_mask |= 3698 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3699 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3700 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3701 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3702 } 3703 3704 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3705 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3706 & ~hotkey_all_mask 3707 & ~hotkey_reserved_mask; 3708 3709 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3710 "hotkey source mask 0x%08x, polling freq %u\n", 3711 hotkey_source_mask, hotkey_poll_freq); 3712 #endif 3713 3714 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3715 "enabling firmware HKEY event interface...\n"); 3716 res = hotkey_status_set(true); 3717 if (res) { 3718 hotkey_exit(); 3719 return res; 3720 } 3721 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3722 | hotkey_driver_mask) 3723 & ~hotkey_source_mask); 3724 if (res < 0 && res != -ENXIO) { 3725 hotkey_exit(); 3726 return res; 3727 } 3728 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3729 & ~hotkey_reserved_mask; 3730 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3731 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3732 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3733 3734 tpacpi_inputdev->open = &hotkey_inputdev_open; 3735 tpacpi_inputdev->close = &hotkey_inputdev_close; 3736 3737 hotkey_poll_setup_safe(true); 3738 3739 return 0; 3740 3741 err_exit: 3742 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3743 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3744 &adaptive_kbd_attr_group); 3745 3746 hotkey_dev_attributes = NULL; 3747 3748 return (res < 0) ? res : 1; 3749 } 3750 3751 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3752 * mode, Web conference mode, Function mode and Lay-flat mode. 3753 * We support Home mode and Function mode currently. 3754 * 3755 * Will consider support rest of modes in future. 3756 * 3757 */ 3758 static const int adaptive_keyboard_modes[] = { 3759 HOME_MODE, 3760 /* WEB_BROWSER_MODE = 2, 3761 WEB_CONFERENCE_MODE = 3, */ 3762 FUNCTION_MODE 3763 }; 3764 3765 #define DFR_CHANGE_ROW 0x101 3766 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3767 #define FIRST_ADAPTIVE_KEY 0x103 3768 3769 /* press Fn key a while second, it will switch to Function Mode. Then 3770 * release Fn key, previous mode be restored. 3771 */ 3772 static bool adaptive_keyboard_mode_is_saved; 3773 static int adaptive_keyboard_prev_mode; 3774 3775 static int adaptive_keyboard_get_mode(void) 3776 { 3777 int mode = 0; 3778 3779 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3780 pr_err("Cannot read adaptive keyboard mode\n"); 3781 return -EIO; 3782 } 3783 3784 return mode; 3785 } 3786 3787 static int adaptive_keyboard_set_mode(int new_mode) 3788 { 3789 if (new_mode < 0 || 3790 new_mode > LAYFLAT_MODE) 3791 return -EINVAL; 3792 3793 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3794 pr_err("Cannot set adaptive keyboard mode\n"); 3795 return -EIO; 3796 } 3797 3798 return 0; 3799 } 3800 3801 static int adaptive_keyboard_get_next_mode(int mode) 3802 { 3803 size_t i; 3804 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3805 3806 for (i = 0; i <= max_mode; i++) { 3807 if (adaptive_keyboard_modes[i] == mode) 3808 break; 3809 } 3810 3811 if (i >= max_mode) 3812 i = 0; 3813 else 3814 i++; 3815 3816 return adaptive_keyboard_modes[i]; 3817 } 3818 3819 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3820 { 3821 int current_mode = 0; 3822 int new_mode = 0; 3823 int keycode; 3824 3825 switch (scancode) { 3826 case DFR_CHANGE_ROW: 3827 if (adaptive_keyboard_mode_is_saved) { 3828 new_mode = adaptive_keyboard_prev_mode; 3829 adaptive_keyboard_mode_is_saved = false; 3830 } else { 3831 current_mode = adaptive_keyboard_get_mode(); 3832 if (current_mode < 0) 3833 return false; 3834 new_mode = adaptive_keyboard_get_next_mode( 3835 current_mode); 3836 } 3837 3838 if (adaptive_keyboard_set_mode(new_mode) < 0) 3839 return false; 3840 3841 return true; 3842 3843 case DFR_SHOW_QUICKVIEW_ROW: 3844 current_mode = adaptive_keyboard_get_mode(); 3845 if (current_mode < 0) 3846 return false; 3847 3848 adaptive_keyboard_prev_mode = current_mode; 3849 adaptive_keyboard_mode_is_saved = true; 3850 3851 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3852 return false; 3853 return true; 3854 3855 default: 3856 if (scancode < FIRST_ADAPTIVE_KEY || 3857 scancode >= FIRST_ADAPTIVE_KEY + 3858 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3859 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3860 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3861 scancode); 3862 return false; 3863 } 3864 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3865 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3866 if (keycode != KEY_RESERVED) { 3867 mutex_lock(&tpacpi_inputdev_send_mutex); 3868 3869 input_report_key(tpacpi_inputdev, keycode, 1); 3870 input_sync(tpacpi_inputdev); 3871 3872 input_report_key(tpacpi_inputdev, keycode, 0); 3873 input_sync(tpacpi_inputdev); 3874 3875 mutex_unlock(&tpacpi_inputdev_send_mutex); 3876 } 3877 return true; 3878 } 3879 } 3880 3881 static bool hotkey_notify_hotkey(const u32 hkey, 3882 bool *send_acpi_ev, 3883 bool *ignore_acpi_ev) 3884 { 3885 /* 0x1000-0x1FFF: key presses */ 3886 unsigned int scancode = hkey & 0xfff; 3887 *send_acpi_ev = true; 3888 *ignore_acpi_ev = false; 3889 3890 /* 3891 * Original events are in the 0x10XX range, the adaptive keyboard 3892 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3893 * models, additional keys are emitted through 0x13XX. 3894 */ 3895 switch ((hkey >> 8) & 0xf) { 3896 case 0: 3897 if (scancode > 0 && 3898 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3899 /* HKEY event 0x1001 is scancode 0x00 */ 3900 scancode--; 3901 if (!(hotkey_source_mask & (1 << scancode))) { 3902 tpacpi_input_send_key_masked(scancode); 3903 *send_acpi_ev = false; 3904 } else { 3905 *ignore_acpi_ev = true; 3906 } 3907 return true; 3908 } 3909 break; 3910 3911 case 1: 3912 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3913 3914 case 3: 3915 /* Extended keycodes start at 0x300 and our offset into the map 3916 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3917 * will be positive, but might not be in the correct range. 3918 */ 3919 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3920 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3921 scancode < TPACPI_HOTKEY_MAP_LEN) { 3922 tpacpi_input_send_key(scancode); 3923 return true; 3924 } 3925 break; 3926 } 3927 3928 return false; 3929 } 3930 3931 static bool hotkey_notify_wakeup(const u32 hkey, 3932 bool *send_acpi_ev, 3933 bool *ignore_acpi_ev) 3934 { 3935 /* 0x2000-0x2FFF: Wakeup reason */ 3936 *send_acpi_ev = true; 3937 *ignore_acpi_ev = false; 3938 3939 switch (hkey) { 3940 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3941 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3942 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3943 *ignore_acpi_ev = true; 3944 break; 3945 3946 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3947 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3948 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3949 *ignore_acpi_ev = true; 3950 break; 3951 3952 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3953 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3954 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3955 /* how to auto-heal: */ 3956 /* 2313: woke up from S3, go to S4/S5 */ 3957 /* 2413: woke up from S4, go to S5 */ 3958 break; 3959 3960 default: 3961 return false; 3962 } 3963 3964 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3965 pr_info("woke up due to a hot-unplug request...\n"); 3966 hotkey_wakeup_reason_notify_change(); 3967 } 3968 return true; 3969 } 3970 3971 static bool hotkey_notify_dockevent(const u32 hkey, 3972 bool *send_acpi_ev, 3973 bool *ignore_acpi_ev) 3974 { 3975 /* 0x4000-0x4FFF: dock-related events */ 3976 *send_acpi_ev = true; 3977 *ignore_acpi_ev = false; 3978 3979 switch (hkey) { 3980 case TP_HKEY_EV_UNDOCK_ACK: 3981 /* ACPI undock operation completed after wakeup */ 3982 hotkey_autosleep_ack = 1; 3983 pr_info("undocked\n"); 3984 hotkey_wakeup_hotunplug_complete_notify_change(); 3985 return true; 3986 3987 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3988 pr_info("docked into hotplug port replicator\n"); 3989 return true; 3990 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3991 pr_info("undocked from hotplug port replicator\n"); 3992 return true; 3993 3994 default: 3995 return false; 3996 } 3997 } 3998 3999 static bool hotkey_notify_usrevent(const u32 hkey, 4000 bool *send_acpi_ev, 4001 bool *ignore_acpi_ev) 4002 { 4003 /* 0x5000-0x5FFF: human interface helpers */ 4004 *send_acpi_ev = true; 4005 *ignore_acpi_ev = false; 4006 4007 switch (hkey) { 4008 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4009 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4010 return true; 4011 4012 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4013 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4014 tpacpi_input_send_tabletsw(); 4015 hotkey_tablet_mode_notify_change(); 4016 *send_acpi_ev = false; 4017 return true; 4018 4019 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4020 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4021 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4022 /* do not propagate these events */ 4023 *ignore_acpi_ev = true; 4024 return true; 4025 4026 default: 4027 return false; 4028 } 4029 } 4030 4031 static void thermal_dump_all_sensors(void); 4032 static void palmsensor_refresh(void); 4033 4034 static bool hotkey_notify_6xxx(const u32 hkey, 4035 bool *send_acpi_ev, 4036 bool *ignore_acpi_ev) 4037 { 4038 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4039 *send_acpi_ev = true; 4040 *ignore_acpi_ev = false; 4041 4042 switch (hkey) { 4043 case TP_HKEY_EV_THM_TABLE_CHANGED: 4044 pr_debug("EC reports: Thermal Table has changed\n"); 4045 /* recommended action: do nothing, we don't have 4046 * Lenovo ATM information */ 4047 return true; 4048 case TP_HKEY_EV_THM_CSM_COMPLETED: 4049 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 4050 /* Thermal event - pass on to event handler */ 4051 tpacpi_driver_event(hkey); 4052 return true; 4053 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 4054 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 4055 /* recommended action: do nothing, we don't have 4056 * Lenovo ATM information */ 4057 return true; 4058 case TP_HKEY_EV_ALARM_BAT_HOT: 4059 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4060 /* recommended action: warn user through gui */ 4061 break; 4062 case TP_HKEY_EV_ALARM_BAT_XHOT: 4063 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4064 /* recommended action: immediate sleep/hibernate */ 4065 break; 4066 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4067 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4068 /* recommended action: warn user through gui, that */ 4069 /* some internal component is too hot */ 4070 break; 4071 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4072 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4073 /* recommended action: immediate sleep/hibernate */ 4074 break; 4075 case TP_HKEY_EV_AC_CHANGED: 4076 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4077 * AC status changed; can be triggered by plugging or 4078 * unplugging AC adapter, docking or undocking. */ 4079 4080 fallthrough; 4081 4082 case TP_HKEY_EV_KEY_NUMLOCK: 4083 case TP_HKEY_EV_KEY_FN: 4084 case TP_HKEY_EV_KEY_FN_ESC: 4085 /* key press events, we just ignore them as long as the EC 4086 * is still reporting them in the normal keyboard stream */ 4087 *send_acpi_ev = false; 4088 *ignore_acpi_ev = true; 4089 return true; 4090 4091 case TP_HKEY_EV_TABLET_CHANGED: 4092 tpacpi_input_send_tabletsw(); 4093 hotkey_tablet_mode_notify_change(); 4094 *send_acpi_ev = false; 4095 return true; 4096 4097 case TP_HKEY_EV_PALM_DETECTED: 4098 case TP_HKEY_EV_PALM_UNDETECTED: 4099 /* palm detected - pass on to event handler */ 4100 palmsensor_refresh(); 4101 return true; 4102 4103 default: 4104 /* report simply as unknown, no sensor dump */ 4105 return false; 4106 } 4107 4108 thermal_dump_all_sensors(); 4109 return true; 4110 } 4111 4112 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4113 { 4114 u32 hkey; 4115 bool send_acpi_ev; 4116 bool ignore_acpi_ev; 4117 bool known_ev; 4118 4119 if (event != 0x80) { 4120 pr_err("unknown HKEY notification event %d\n", event); 4121 /* forward it to userspace, maybe it knows how to handle it */ 4122 acpi_bus_generate_netlink_event( 4123 ibm->acpi->device->pnp.device_class, 4124 dev_name(&ibm->acpi->device->dev), 4125 event, 0); 4126 return; 4127 } 4128 4129 while (1) { 4130 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4131 pr_err("failed to retrieve HKEY event\n"); 4132 return; 4133 } 4134 4135 if (hkey == 0) { 4136 /* queue empty */ 4137 return; 4138 } 4139 4140 send_acpi_ev = true; 4141 ignore_acpi_ev = false; 4142 4143 switch (hkey >> 12) { 4144 case 1: 4145 /* 0x1000-0x1FFF: key presses */ 4146 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4147 &ignore_acpi_ev); 4148 break; 4149 case 2: 4150 /* 0x2000-0x2FFF: Wakeup reason */ 4151 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4152 &ignore_acpi_ev); 4153 break; 4154 case 3: 4155 /* 0x3000-0x3FFF: bay-related wakeups */ 4156 switch (hkey) { 4157 case TP_HKEY_EV_BAYEJ_ACK: 4158 hotkey_autosleep_ack = 1; 4159 pr_info("bay ejected\n"); 4160 hotkey_wakeup_hotunplug_complete_notify_change(); 4161 known_ev = true; 4162 break; 4163 case TP_HKEY_EV_OPTDRV_EJ: 4164 /* FIXME: kick libata if SATA link offline */ 4165 known_ev = true; 4166 break; 4167 default: 4168 known_ev = false; 4169 } 4170 break; 4171 case 4: 4172 /* 0x4000-0x4FFF: dock-related events */ 4173 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4174 &ignore_acpi_ev); 4175 break; 4176 case 5: 4177 /* 0x5000-0x5FFF: human interface helpers */ 4178 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4179 &ignore_acpi_ev); 4180 break; 4181 case 6: 4182 /* 0x6000-0x6FFF: thermal alarms/notices and 4183 * keyboard events */ 4184 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4185 &ignore_acpi_ev); 4186 break; 4187 case 7: 4188 /* 0x7000-0x7FFF: misc */ 4189 if (tp_features.hotkey_wlsw && 4190 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4191 tpacpi_send_radiosw_update(); 4192 send_acpi_ev = 0; 4193 known_ev = true; 4194 break; 4195 } 4196 fallthrough; /* to default */ 4197 default: 4198 known_ev = false; 4199 } 4200 if (!known_ev) { 4201 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4202 pr_notice("please report the conditions when this event happened to %s\n", 4203 TPACPI_MAIL); 4204 } 4205 4206 /* netlink events */ 4207 if (!ignore_acpi_ev && send_acpi_ev) { 4208 acpi_bus_generate_netlink_event( 4209 ibm->acpi->device->pnp.device_class, 4210 dev_name(&ibm->acpi->device->dev), 4211 event, hkey); 4212 } 4213 } 4214 } 4215 4216 static void hotkey_suspend(void) 4217 { 4218 /* Do these on suspend, we get the events on early resume! */ 4219 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4220 hotkey_autosleep_ack = 0; 4221 4222 /* save previous mode of adaptive keyboard of X1 Carbon */ 4223 if (tp_features.has_adaptive_kbd) { 4224 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4225 "GTRW", "dd", 0)) { 4226 pr_err("Cannot read adaptive keyboard mode.\n"); 4227 } 4228 } 4229 } 4230 4231 static void hotkey_resume(void) 4232 { 4233 tpacpi_disable_brightness_delay(); 4234 4235 if (hotkey_status_set(true) < 0 || 4236 hotkey_mask_set(hotkey_acpi_mask) < 0) 4237 pr_err("error while attempting to reset the event firmware interface\n"); 4238 4239 tpacpi_send_radiosw_update(); 4240 tpacpi_input_send_tabletsw(); 4241 hotkey_tablet_mode_notify_change(); 4242 hotkey_wakeup_reason_notify_change(); 4243 hotkey_wakeup_hotunplug_complete_notify_change(); 4244 hotkey_poll_setup_safe(false); 4245 4246 /* restore previous mode of adapive keyboard of X1 Carbon */ 4247 if (tp_features.has_adaptive_kbd) { 4248 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4249 adaptive_keyboard_prev_mode)) { 4250 pr_err("Cannot set adaptive keyboard mode.\n"); 4251 } 4252 } 4253 } 4254 4255 /* procfs -------------------------------------------------------------- */ 4256 static int hotkey_read(struct seq_file *m) 4257 { 4258 int res, status; 4259 4260 if (!tp_features.hotkey) { 4261 seq_printf(m, "status:\t\tnot supported\n"); 4262 return 0; 4263 } 4264 4265 if (mutex_lock_killable(&hotkey_mutex)) 4266 return -ERESTARTSYS; 4267 res = hotkey_status_get(&status); 4268 if (!res) 4269 res = hotkey_mask_get(); 4270 mutex_unlock(&hotkey_mutex); 4271 if (res) 4272 return res; 4273 4274 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4275 if (hotkey_all_mask) { 4276 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4277 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4278 } else { 4279 seq_printf(m, "mask:\t\tnot supported\n"); 4280 seq_printf(m, "commands:\tenable, disable, reset\n"); 4281 } 4282 4283 return 0; 4284 } 4285 4286 static void hotkey_enabledisable_warn(bool enable) 4287 { 4288 tpacpi_log_usertask("procfs hotkey enable/disable"); 4289 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4290 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4291 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4292 } 4293 4294 static int hotkey_write(char *buf) 4295 { 4296 int res; 4297 u32 mask; 4298 char *cmd; 4299 4300 if (!tp_features.hotkey) 4301 return -ENODEV; 4302 4303 if (mutex_lock_killable(&hotkey_mutex)) 4304 return -ERESTARTSYS; 4305 4306 mask = hotkey_user_mask; 4307 4308 res = 0; 4309 while ((cmd = strsep(&buf, ","))) { 4310 if (strlencmp(cmd, "enable") == 0) { 4311 hotkey_enabledisable_warn(1); 4312 } else if (strlencmp(cmd, "disable") == 0) { 4313 hotkey_enabledisable_warn(0); 4314 res = -EPERM; 4315 } else if (strlencmp(cmd, "reset") == 0) { 4316 mask = (hotkey_all_mask | hotkey_source_mask) 4317 & ~hotkey_reserved_mask; 4318 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4319 /* mask set */ 4320 } else if (sscanf(cmd, "%x", &mask) == 1) { 4321 /* mask set */ 4322 } else { 4323 res = -EINVAL; 4324 goto errexit; 4325 } 4326 } 4327 4328 if (!res) { 4329 tpacpi_disclose_usertask("procfs hotkey", 4330 "set mask to 0x%08x\n", mask); 4331 res = hotkey_user_mask_set(mask); 4332 } 4333 4334 errexit: 4335 mutex_unlock(&hotkey_mutex); 4336 return res; 4337 } 4338 4339 static const struct acpi_device_id ibm_htk_device_ids[] = { 4340 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4341 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4342 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4343 {"", 0}, 4344 }; 4345 4346 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4347 .hid = ibm_htk_device_ids, 4348 .notify = hotkey_notify, 4349 .handle = &hkey_handle, 4350 .type = ACPI_DEVICE_NOTIFY, 4351 }; 4352 4353 static struct ibm_struct hotkey_driver_data = { 4354 .name = "hotkey", 4355 .read = hotkey_read, 4356 .write = hotkey_write, 4357 .exit = hotkey_exit, 4358 .resume = hotkey_resume, 4359 .suspend = hotkey_suspend, 4360 .acpi = &ibm_hotkey_acpidriver, 4361 }; 4362 4363 /************************************************************************* 4364 * Bluetooth subdriver 4365 */ 4366 4367 enum { 4368 /* ACPI GBDC/SBDC bits */ 4369 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4370 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4371 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4372 0 = disable, 1 = enable */ 4373 }; 4374 4375 enum { 4376 /* ACPI \BLTH commands */ 4377 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4378 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4379 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4380 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4381 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4382 }; 4383 4384 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4385 4386 static int bluetooth_get_status(void) 4387 { 4388 int status; 4389 4390 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4391 if (dbg_bluetoothemul) 4392 return (tpacpi_bluetooth_emulstate) ? 4393 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4394 #endif 4395 4396 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4397 return -EIO; 4398 4399 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4400 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4401 } 4402 4403 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4404 { 4405 int status; 4406 4407 vdbg_printk(TPACPI_DBG_RFKILL, 4408 "will attempt to %s bluetooth\n", 4409 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4410 4411 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4412 if (dbg_bluetoothemul) { 4413 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4414 return 0; 4415 } 4416 #endif 4417 4418 if (state == TPACPI_RFK_RADIO_ON) 4419 status = TP_ACPI_BLUETOOTH_RADIOSSW 4420 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4421 else 4422 status = 0; 4423 4424 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4425 return -EIO; 4426 4427 return 0; 4428 } 4429 4430 /* sysfs bluetooth enable ---------------------------------------------- */ 4431 static ssize_t bluetooth_enable_show(struct device *dev, 4432 struct device_attribute *attr, 4433 char *buf) 4434 { 4435 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4436 attr, buf); 4437 } 4438 4439 static ssize_t bluetooth_enable_store(struct device *dev, 4440 struct device_attribute *attr, 4441 const char *buf, size_t count) 4442 { 4443 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4444 attr, buf, count); 4445 } 4446 4447 static DEVICE_ATTR_RW(bluetooth_enable); 4448 4449 /* --------------------------------------------------------------------- */ 4450 4451 static struct attribute *bluetooth_attributes[] = { 4452 &dev_attr_bluetooth_enable.attr, 4453 NULL 4454 }; 4455 4456 static const struct attribute_group bluetooth_attr_group = { 4457 .attrs = bluetooth_attributes, 4458 }; 4459 4460 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4461 .get_status = bluetooth_get_status, 4462 .set_status = bluetooth_set_status, 4463 }; 4464 4465 static void bluetooth_shutdown(void) 4466 { 4467 /* Order firmware to save current state to NVRAM */ 4468 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4469 TP_ACPI_BLTH_SAVE_STATE)) 4470 pr_notice("failed to save bluetooth state to NVRAM\n"); 4471 else 4472 vdbg_printk(TPACPI_DBG_RFKILL, 4473 "bluetooth state saved to NVRAM\n"); 4474 } 4475 4476 static void bluetooth_exit(void) 4477 { 4478 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4479 &bluetooth_attr_group); 4480 4481 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4482 4483 bluetooth_shutdown(); 4484 } 4485 4486 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4487 { 4488 .ident = "ThinkPad E485", 4489 .matches = { 4490 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4491 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4492 }, 4493 }, 4494 { 4495 .ident = "ThinkPad E585", 4496 .matches = { 4497 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4498 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4499 }, 4500 }, 4501 { 4502 .ident = "ThinkPad A285 - 20MW", 4503 .matches = { 4504 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4505 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4506 }, 4507 }, 4508 { 4509 .ident = "ThinkPad A285 - 20MX", 4510 .matches = { 4511 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4512 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4513 }, 4514 }, 4515 { 4516 .ident = "ThinkPad A485 - 20MU", 4517 .matches = { 4518 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4519 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4520 }, 4521 }, 4522 { 4523 .ident = "ThinkPad A485 - 20MV", 4524 .matches = { 4525 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4526 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4527 }, 4528 }, 4529 {} 4530 }; 4531 4532 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4533 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4534 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4535 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4536 {} 4537 }; 4538 4539 4540 static int __init have_bt_fwbug(void) 4541 { 4542 /* 4543 * Some AMD based ThinkPads have a firmware bug that calling 4544 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4545 */ 4546 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4547 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4548 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4549 return 1; 4550 } else 4551 return 0; 4552 } 4553 4554 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4555 { 4556 int res; 4557 int status = 0; 4558 4559 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4560 "initializing bluetooth subdriver\n"); 4561 4562 TPACPI_ACPIHANDLE_INIT(hkey); 4563 4564 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4565 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4566 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4567 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4568 4569 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4570 "bluetooth is %s, status 0x%02x\n", 4571 str_supported(tp_features.bluetooth), 4572 status); 4573 4574 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4575 if (dbg_bluetoothemul) { 4576 tp_features.bluetooth = 1; 4577 pr_info("bluetooth switch emulation enabled\n"); 4578 } else 4579 #endif 4580 if (tp_features.bluetooth && 4581 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4582 /* no bluetooth hardware present in system */ 4583 tp_features.bluetooth = 0; 4584 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4585 "bluetooth hardware not installed\n"); 4586 } 4587 4588 if (!tp_features.bluetooth) 4589 return 1; 4590 4591 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4592 &bluetooth_tprfk_ops, 4593 RFKILL_TYPE_BLUETOOTH, 4594 TPACPI_RFK_BLUETOOTH_SW_NAME, 4595 true); 4596 if (res) 4597 return res; 4598 4599 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4600 &bluetooth_attr_group); 4601 if (res) { 4602 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4603 return res; 4604 } 4605 4606 return 0; 4607 } 4608 4609 /* procfs -------------------------------------------------------------- */ 4610 static int bluetooth_read(struct seq_file *m) 4611 { 4612 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4613 } 4614 4615 static int bluetooth_write(char *buf) 4616 { 4617 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4618 } 4619 4620 static struct ibm_struct bluetooth_driver_data = { 4621 .name = "bluetooth", 4622 .read = bluetooth_read, 4623 .write = bluetooth_write, 4624 .exit = bluetooth_exit, 4625 .shutdown = bluetooth_shutdown, 4626 }; 4627 4628 /************************************************************************* 4629 * Wan subdriver 4630 */ 4631 4632 enum { 4633 /* ACPI GWAN/SWAN bits */ 4634 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4635 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4636 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4637 0 = disable, 1 = enable */ 4638 }; 4639 4640 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4641 4642 static int wan_get_status(void) 4643 { 4644 int status; 4645 4646 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4647 if (dbg_wwanemul) 4648 return (tpacpi_wwan_emulstate) ? 4649 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4650 #endif 4651 4652 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4653 return -EIO; 4654 4655 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4656 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4657 } 4658 4659 static int wan_set_status(enum tpacpi_rfkill_state state) 4660 { 4661 int status; 4662 4663 vdbg_printk(TPACPI_DBG_RFKILL, 4664 "will attempt to %s wwan\n", 4665 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4666 4667 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4668 if (dbg_wwanemul) { 4669 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4670 return 0; 4671 } 4672 #endif 4673 4674 if (state == TPACPI_RFK_RADIO_ON) 4675 status = TP_ACPI_WANCARD_RADIOSSW 4676 | TP_ACPI_WANCARD_RESUMECTRL; 4677 else 4678 status = 0; 4679 4680 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4681 return -EIO; 4682 4683 return 0; 4684 } 4685 4686 /* sysfs wan enable ---------------------------------------------------- */ 4687 static ssize_t wan_enable_show(struct device *dev, 4688 struct device_attribute *attr, 4689 char *buf) 4690 { 4691 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4692 attr, buf); 4693 } 4694 4695 static ssize_t wan_enable_store(struct device *dev, 4696 struct device_attribute *attr, 4697 const char *buf, size_t count) 4698 { 4699 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4700 attr, buf, count); 4701 } 4702 4703 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4704 wan_enable_show, wan_enable_store); 4705 4706 /* --------------------------------------------------------------------- */ 4707 4708 static struct attribute *wan_attributes[] = { 4709 &dev_attr_wwan_enable.attr, 4710 NULL 4711 }; 4712 4713 static const struct attribute_group wan_attr_group = { 4714 .attrs = wan_attributes, 4715 }; 4716 4717 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4718 .get_status = wan_get_status, 4719 .set_status = wan_set_status, 4720 }; 4721 4722 static void wan_shutdown(void) 4723 { 4724 /* Order firmware to save current state to NVRAM */ 4725 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4726 TP_ACPI_WGSV_SAVE_STATE)) 4727 pr_notice("failed to save WWAN state to NVRAM\n"); 4728 else 4729 vdbg_printk(TPACPI_DBG_RFKILL, 4730 "WWAN state saved to NVRAM\n"); 4731 } 4732 4733 static void wan_exit(void) 4734 { 4735 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4736 &wan_attr_group); 4737 4738 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4739 4740 wan_shutdown(); 4741 } 4742 4743 static int __init wan_init(struct ibm_init_struct *iibm) 4744 { 4745 int res; 4746 int status = 0; 4747 4748 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4749 "initializing wan subdriver\n"); 4750 4751 TPACPI_ACPIHANDLE_INIT(hkey); 4752 4753 tp_features.wan = hkey_handle && 4754 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4755 4756 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4757 "wan is %s, status 0x%02x\n", 4758 str_supported(tp_features.wan), 4759 status); 4760 4761 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4762 if (dbg_wwanemul) { 4763 tp_features.wan = 1; 4764 pr_info("wwan switch emulation enabled\n"); 4765 } else 4766 #endif 4767 if (tp_features.wan && 4768 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4769 /* no wan hardware present in system */ 4770 tp_features.wan = 0; 4771 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4772 "wan hardware not installed\n"); 4773 } 4774 4775 if (!tp_features.wan) 4776 return 1; 4777 4778 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4779 &wan_tprfk_ops, 4780 RFKILL_TYPE_WWAN, 4781 TPACPI_RFK_WWAN_SW_NAME, 4782 true); 4783 if (res) 4784 return res; 4785 4786 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4787 &wan_attr_group); 4788 4789 if (res) { 4790 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4791 return res; 4792 } 4793 4794 return 0; 4795 } 4796 4797 /* procfs -------------------------------------------------------------- */ 4798 static int wan_read(struct seq_file *m) 4799 { 4800 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4801 } 4802 4803 static int wan_write(char *buf) 4804 { 4805 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4806 } 4807 4808 static struct ibm_struct wan_driver_data = { 4809 .name = "wan", 4810 .read = wan_read, 4811 .write = wan_write, 4812 .exit = wan_exit, 4813 .shutdown = wan_shutdown, 4814 }; 4815 4816 /************************************************************************* 4817 * UWB subdriver 4818 */ 4819 4820 enum { 4821 /* ACPI GUWB/SUWB bits */ 4822 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4823 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4824 }; 4825 4826 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4827 4828 static int uwb_get_status(void) 4829 { 4830 int status; 4831 4832 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4833 if (dbg_uwbemul) 4834 return (tpacpi_uwb_emulstate) ? 4835 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4836 #endif 4837 4838 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4839 return -EIO; 4840 4841 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4842 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4843 } 4844 4845 static int uwb_set_status(enum tpacpi_rfkill_state state) 4846 { 4847 int status; 4848 4849 vdbg_printk(TPACPI_DBG_RFKILL, 4850 "will attempt to %s UWB\n", 4851 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4852 4853 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4854 if (dbg_uwbemul) { 4855 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4856 return 0; 4857 } 4858 #endif 4859 4860 if (state == TPACPI_RFK_RADIO_ON) 4861 status = TP_ACPI_UWB_RADIOSSW; 4862 else 4863 status = 0; 4864 4865 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4866 return -EIO; 4867 4868 return 0; 4869 } 4870 4871 /* --------------------------------------------------------------------- */ 4872 4873 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4874 .get_status = uwb_get_status, 4875 .set_status = uwb_set_status, 4876 }; 4877 4878 static void uwb_exit(void) 4879 { 4880 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4881 } 4882 4883 static int __init uwb_init(struct ibm_init_struct *iibm) 4884 { 4885 int res; 4886 int status = 0; 4887 4888 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4889 "initializing uwb subdriver\n"); 4890 4891 TPACPI_ACPIHANDLE_INIT(hkey); 4892 4893 tp_features.uwb = hkey_handle && 4894 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4895 4896 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4897 "uwb is %s, status 0x%02x\n", 4898 str_supported(tp_features.uwb), 4899 status); 4900 4901 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4902 if (dbg_uwbemul) { 4903 tp_features.uwb = 1; 4904 pr_info("uwb switch emulation enabled\n"); 4905 } else 4906 #endif 4907 if (tp_features.uwb && 4908 !(status & TP_ACPI_UWB_HWPRESENT)) { 4909 /* no uwb hardware present in system */ 4910 tp_features.uwb = 0; 4911 dbg_printk(TPACPI_DBG_INIT, 4912 "uwb hardware not installed\n"); 4913 } 4914 4915 if (!tp_features.uwb) 4916 return 1; 4917 4918 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4919 &uwb_tprfk_ops, 4920 RFKILL_TYPE_UWB, 4921 TPACPI_RFK_UWB_SW_NAME, 4922 false); 4923 return res; 4924 } 4925 4926 static struct ibm_struct uwb_driver_data = { 4927 .name = "uwb", 4928 .exit = uwb_exit, 4929 .flags.experimental = 1, 4930 }; 4931 4932 /************************************************************************* 4933 * Video subdriver 4934 */ 4935 4936 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4937 4938 enum video_access_mode { 4939 TPACPI_VIDEO_NONE = 0, 4940 TPACPI_VIDEO_570, /* 570 */ 4941 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4942 TPACPI_VIDEO_NEW, /* all others */ 4943 }; 4944 4945 enum { /* video status flags, based on VIDEO_570 */ 4946 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4947 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4948 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4949 }; 4950 4951 enum { /* TPACPI_VIDEO_570 constants */ 4952 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4953 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4954 * video_status_flags */ 4955 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4956 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4957 }; 4958 4959 static enum video_access_mode video_supported; 4960 static int video_orig_autosw; 4961 4962 static int video_autosw_get(void); 4963 static int video_autosw_set(int enable); 4964 4965 TPACPI_HANDLE(vid, root, 4966 "\\_SB.PCI.AGP.VGA", /* 570 */ 4967 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4968 "\\_SB.PCI0.VID0", /* 770e */ 4969 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4970 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4971 "\\_SB.PCI0.AGP.VID", /* all others */ 4972 ); /* R30, R31 */ 4973 4974 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4975 4976 static int __init video_init(struct ibm_init_struct *iibm) 4977 { 4978 int ivga; 4979 4980 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4981 4982 TPACPI_ACPIHANDLE_INIT(vid); 4983 if (tpacpi_is_ibm()) 4984 TPACPI_ACPIHANDLE_INIT(vid2); 4985 4986 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4987 /* G41, assume IVGA doesn't change */ 4988 vid_handle = vid2_handle; 4989 4990 if (!vid_handle) 4991 /* video switching not supported on R30, R31 */ 4992 video_supported = TPACPI_VIDEO_NONE; 4993 else if (tpacpi_is_ibm() && 4994 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4995 /* 570 */ 4996 video_supported = TPACPI_VIDEO_570; 4997 else if (tpacpi_is_ibm() && 4998 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4999 /* 600e/x, 770e, 770x */ 5000 video_supported = TPACPI_VIDEO_770; 5001 else 5002 /* all others */ 5003 video_supported = TPACPI_VIDEO_NEW; 5004 5005 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 5006 str_supported(video_supported != TPACPI_VIDEO_NONE), 5007 video_supported); 5008 5009 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 5010 } 5011 5012 static void video_exit(void) 5013 { 5014 dbg_printk(TPACPI_DBG_EXIT, 5015 "restoring original video autoswitch mode\n"); 5016 if (video_autosw_set(video_orig_autosw)) 5017 pr_err("error while trying to restore original video autoswitch mode\n"); 5018 } 5019 5020 static int video_outputsw_get(void) 5021 { 5022 int status = 0; 5023 int i; 5024 5025 switch (video_supported) { 5026 case TPACPI_VIDEO_570: 5027 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5028 TP_ACPI_VIDEO_570_PHSCMD)) 5029 return -EIO; 5030 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5031 break; 5032 case TPACPI_VIDEO_770: 5033 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5034 return -EIO; 5035 if (i) 5036 status |= TP_ACPI_VIDEO_S_LCD; 5037 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5038 return -EIO; 5039 if (i) 5040 status |= TP_ACPI_VIDEO_S_CRT; 5041 break; 5042 case TPACPI_VIDEO_NEW: 5043 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5044 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5045 return -EIO; 5046 if (i) 5047 status |= TP_ACPI_VIDEO_S_CRT; 5048 5049 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5050 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5051 return -EIO; 5052 if (i) 5053 status |= TP_ACPI_VIDEO_S_LCD; 5054 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5055 return -EIO; 5056 if (i) 5057 status |= TP_ACPI_VIDEO_S_DVI; 5058 break; 5059 default: 5060 return -ENOSYS; 5061 } 5062 5063 return status; 5064 } 5065 5066 static int video_outputsw_set(int status) 5067 { 5068 int autosw; 5069 int res = 0; 5070 5071 switch (video_supported) { 5072 case TPACPI_VIDEO_570: 5073 res = acpi_evalf(NULL, NULL, 5074 "\\_SB.PHS2", "vdd", 5075 TP_ACPI_VIDEO_570_PHS2CMD, 5076 status | TP_ACPI_VIDEO_570_PHS2SET); 5077 break; 5078 case TPACPI_VIDEO_770: 5079 autosw = video_autosw_get(); 5080 if (autosw < 0) 5081 return autosw; 5082 5083 res = video_autosw_set(1); 5084 if (res) 5085 return res; 5086 res = acpi_evalf(vid_handle, NULL, 5087 "ASWT", "vdd", status * 0x100, 0); 5088 if (!autosw && video_autosw_set(autosw)) { 5089 pr_err("video auto-switch left enabled due to error\n"); 5090 return -EIO; 5091 } 5092 break; 5093 case TPACPI_VIDEO_NEW: 5094 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5095 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5096 break; 5097 default: 5098 return -ENOSYS; 5099 } 5100 5101 return (res) ? 0 : -EIO; 5102 } 5103 5104 static int video_autosw_get(void) 5105 { 5106 int autosw = 0; 5107 5108 switch (video_supported) { 5109 case TPACPI_VIDEO_570: 5110 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5111 return -EIO; 5112 break; 5113 case TPACPI_VIDEO_770: 5114 case TPACPI_VIDEO_NEW: 5115 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5116 return -EIO; 5117 break; 5118 default: 5119 return -ENOSYS; 5120 } 5121 5122 return autosw & 1; 5123 } 5124 5125 static int video_autosw_set(int enable) 5126 { 5127 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5128 return -EIO; 5129 return 0; 5130 } 5131 5132 static int video_outputsw_cycle(void) 5133 { 5134 int autosw = video_autosw_get(); 5135 int res; 5136 5137 if (autosw < 0) 5138 return autosw; 5139 5140 switch (video_supported) { 5141 case TPACPI_VIDEO_570: 5142 res = video_autosw_set(1); 5143 if (res) 5144 return res; 5145 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5146 break; 5147 case TPACPI_VIDEO_770: 5148 case TPACPI_VIDEO_NEW: 5149 res = video_autosw_set(1); 5150 if (res) 5151 return res; 5152 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5153 break; 5154 default: 5155 return -ENOSYS; 5156 } 5157 if (!autosw && video_autosw_set(autosw)) { 5158 pr_err("video auto-switch left enabled due to error\n"); 5159 return -EIO; 5160 } 5161 5162 return (res) ? 0 : -EIO; 5163 } 5164 5165 static int video_expand_toggle(void) 5166 { 5167 switch (video_supported) { 5168 case TPACPI_VIDEO_570: 5169 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5170 0 : -EIO; 5171 case TPACPI_VIDEO_770: 5172 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5173 0 : -EIO; 5174 case TPACPI_VIDEO_NEW: 5175 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5176 0 : -EIO; 5177 default: 5178 return -ENOSYS; 5179 } 5180 /* not reached */ 5181 } 5182 5183 static int video_read(struct seq_file *m) 5184 { 5185 int status, autosw; 5186 5187 if (video_supported == TPACPI_VIDEO_NONE) { 5188 seq_printf(m, "status:\t\tnot supported\n"); 5189 return 0; 5190 } 5191 5192 /* Even reads can crash X.org, so... */ 5193 if (!capable(CAP_SYS_ADMIN)) 5194 return -EPERM; 5195 5196 status = video_outputsw_get(); 5197 if (status < 0) 5198 return status; 5199 5200 autosw = video_autosw_get(); 5201 if (autosw < 0) 5202 return autosw; 5203 5204 seq_printf(m, "status:\t\tsupported\n"); 5205 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5206 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5207 if (video_supported == TPACPI_VIDEO_NEW) 5208 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5209 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5210 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5211 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5212 if (video_supported == TPACPI_VIDEO_NEW) 5213 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5214 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5215 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5216 5217 return 0; 5218 } 5219 5220 static int video_write(char *buf) 5221 { 5222 char *cmd; 5223 int enable, disable, status; 5224 int res; 5225 5226 if (video_supported == TPACPI_VIDEO_NONE) 5227 return -ENODEV; 5228 5229 /* Even reads can crash X.org, let alone writes... */ 5230 if (!capable(CAP_SYS_ADMIN)) 5231 return -EPERM; 5232 5233 enable = 0; 5234 disable = 0; 5235 5236 while ((cmd = strsep(&buf, ","))) { 5237 if (strlencmp(cmd, "lcd_enable") == 0) { 5238 enable |= TP_ACPI_VIDEO_S_LCD; 5239 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5240 disable |= TP_ACPI_VIDEO_S_LCD; 5241 } else if (strlencmp(cmd, "crt_enable") == 0) { 5242 enable |= TP_ACPI_VIDEO_S_CRT; 5243 } else if (strlencmp(cmd, "crt_disable") == 0) { 5244 disable |= TP_ACPI_VIDEO_S_CRT; 5245 } else if (video_supported == TPACPI_VIDEO_NEW && 5246 strlencmp(cmd, "dvi_enable") == 0) { 5247 enable |= TP_ACPI_VIDEO_S_DVI; 5248 } else if (video_supported == TPACPI_VIDEO_NEW && 5249 strlencmp(cmd, "dvi_disable") == 0) { 5250 disable |= TP_ACPI_VIDEO_S_DVI; 5251 } else if (strlencmp(cmd, "auto_enable") == 0) { 5252 res = video_autosw_set(1); 5253 if (res) 5254 return res; 5255 } else if (strlencmp(cmd, "auto_disable") == 0) { 5256 res = video_autosw_set(0); 5257 if (res) 5258 return res; 5259 } else if (strlencmp(cmd, "video_switch") == 0) { 5260 res = video_outputsw_cycle(); 5261 if (res) 5262 return res; 5263 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5264 res = video_expand_toggle(); 5265 if (res) 5266 return res; 5267 } else 5268 return -EINVAL; 5269 } 5270 5271 if (enable || disable) { 5272 status = video_outputsw_get(); 5273 if (status < 0) 5274 return status; 5275 res = video_outputsw_set((status & ~disable) | enable); 5276 if (res) 5277 return res; 5278 } 5279 5280 return 0; 5281 } 5282 5283 static struct ibm_struct video_driver_data = { 5284 .name = "video", 5285 .read = video_read, 5286 .write = video_write, 5287 .exit = video_exit, 5288 }; 5289 5290 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5291 5292 /************************************************************************* 5293 * Keyboard backlight subdriver 5294 */ 5295 5296 static enum led_brightness kbdlight_brightness; 5297 static DEFINE_MUTEX(kbdlight_mutex); 5298 5299 static int kbdlight_set_level(int level) 5300 { 5301 int ret = 0; 5302 5303 if (!hkey_handle) 5304 return -ENXIO; 5305 5306 mutex_lock(&kbdlight_mutex); 5307 5308 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5309 ret = -EIO; 5310 else 5311 kbdlight_brightness = level; 5312 5313 mutex_unlock(&kbdlight_mutex); 5314 5315 return ret; 5316 } 5317 5318 static int kbdlight_get_level(void) 5319 { 5320 int status = 0; 5321 5322 if (!hkey_handle) 5323 return -ENXIO; 5324 5325 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5326 return -EIO; 5327 5328 if (status < 0) 5329 return status; 5330 5331 return status & 0x3; 5332 } 5333 5334 static bool kbdlight_is_supported(void) 5335 { 5336 int status = 0; 5337 5338 if (!hkey_handle) 5339 return false; 5340 5341 if (!acpi_has_method(hkey_handle, "MLCG")) { 5342 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5343 return false; 5344 } 5345 5346 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5347 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5348 return false; 5349 } 5350 5351 if (status < 0) { 5352 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5353 return false; 5354 } 5355 5356 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5357 /* 5358 * Guessed test for keyboard backlight: 5359 * 5360 * Machines with backlight keyboard return: 5361 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5362 * b110100010010000000XX - ThinkPad x230 5363 * b010100000010000000XX - ThinkPad x240 5364 * b010100000010000000XX - ThinkPad W541 5365 * (XX is current backlight level) 5366 * 5367 * Machines without backlight keyboard return: 5368 * b10100001000000000000 - ThinkPad x230 5369 * b10110001000000000000 - ThinkPad E430 5370 * b00000000000000000000 - ThinkPad E450 5371 * 5372 * Candidate BITs for detection test (XOR): 5373 * b01000000001000000000 5374 * ^ 5375 */ 5376 return status & BIT(9); 5377 } 5378 5379 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5380 enum led_brightness brightness) 5381 { 5382 return kbdlight_set_level(brightness); 5383 } 5384 5385 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5386 { 5387 int level; 5388 5389 level = kbdlight_get_level(); 5390 if (level < 0) 5391 return 0; 5392 5393 return level; 5394 } 5395 5396 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5397 .led_classdev = { 5398 .name = "tpacpi::kbd_backlight", 5399 .max_brightness = 2, 5400 .flags = LED_BRIGHT_HW_CHANGED, 5401 .brightness_set_blocking = &kbdlight_sysfs_set, 5402 .brightness_get = &kbdlight_sysfs_get, 5403 } 5404 }; 5405 5406 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5407 { 5408 int rc; 5409 5410 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5411 5412 TPACPI_ACPIHANDLE_INIT(hkey); 5413 5414 if (!kbdlight_is_supported()) { 5415 tp_features.kbdlight = 0; 5416 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5417 return 1; 5418 } 5419 5420 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5421 tp_features.kbdlight = 1; 5422 5423 rc = led_classdev_register(&tpacpi_pdev->dev, 5424 &tpacpi_led_kbdlight.led_classdev); 5425 if (rc < 0) { 5426 tp_features.kbdlight = 0; 5427 return rc; 5428 } 5429 5430 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5431 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5432 return 0; 5433 } 5434 5435 static void kbdlight_exit(void) 5436 { 5437 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5438 } 5439 5440 static int kbdlight_set_level_and_update(int level) 5441 { 5442 int ret; 5443 struct led_classdev *led_cdev; 5444 5445 ret = kbdlight_set_level(level); 5446 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5447 5448 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5449 led_cdev->brightness = level; 5450 5451 return ret; 5452 } 5453 5454 static int kbdlight_read(struct seq_file *m) 5455 { 5456 int level; 5457 5458 if (!tp_features.kbdlight) { 5459 seq_printf(m, "status:\t\tnot supported\n"); 5460 } else { 5461 level = kbdlight_get_level(); 5462 if (level < 0) 5463 seq_printf(m, "status:\t\terror %d\n", level); 5464 else 5465 seq_printf(m, "status:\t\t%d\n", level); 5466 seq_printf(m, "commands:\t0, 1, 2\n"); 5467 } 5468 5469 return 0; 5470 } 5471 5472 static int kbdlight_write(char *buf) 5473 { 5474 char *cmd; 5475 int res, level = -EINVAL; 5476 5477 if (!tp_features.kbdlight) 5478 return -ENODEV; 5479 5480 while ((cmd = strsep(&buf, ","))) { 5481 res = kstrtoint(cmd, 10, &level); 5482 if (res < 0) 5483 return res; 5484 } 5485 5486 if (level >= 3 || level < 0) 5487 return -EINVAL; 5488 5489 return kbdlight_set_level_and_update(level); 5490 } 5491 5492 static void kbdlight_suspend(void) 5493 { 5494 struct led_classdev *led_cdev; 5495 5496 if (!tp_features.kbdlight) 5497 return; 5498 5499 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5500 led_update_brightness(led_cdev); 5501 led_classdev_suspend(led_cdev); 5502 } 5503 5504 static void kbdlight_resume(void) 5505 { 5506 if (!tp_features.kbdlight) 5507 return; 5508 5509 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5510 } 5511 5512 static struct ibm_struct kbdlight_driver_data = { 5513 .name = "kbdlight", 5514 .read = kbdlight_read, 5515 .write = kbdlight_write, 5516 .suspend = kbdlight_suspend, 5517 .resume = kbdlight_resume, 5518 .exit = kbdlight_exit, 5519 }; 5520 5521 /************************************************************************* 5522 * Light (thinklight) subdriver 5523 */ 5524 5525 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5526 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5527 5528 static int light_get_status(void) 5529 { 5530 int status = 0; 5531 5532 if (tp_features.light_status) { 5533 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5534 return -EIO; 5535 return (!!status); 5536 } 5537 5538 return -ENXIO; 5539 } 5540 5541 static int light_set_status(int status) 5542 { 5543 int rc; 5544 5545 if (tp_features.light) { 5546 if (cmos_handle) { 5547 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5548 (status) ? 5549 TP_CMOS_THINKLIGHT_ON : 5550 TP_CMOS_THINKLIGHT_OFF); 5551 } else { 5552 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5553 (status) ? 1 : 0); 5554 } 5555 return (rc) ? 0 : -EIO; 5556 } 5557 5558 return -ENXIO; 5559 } 5560 5561 static int light_sysfs_set(struct led_classdev *led_cdev, 5562 enum led_brightness brightness) 5563 { 5564 return light_set_status((brightness != LED_OFF) ? 5565 TPACPI_LED_ON : TPACPI_LED_OFF); 5566 } 5567 5568 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5569 { 5570 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5571 } 5572 5573 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5574 .led_classdev = { 5575 .name = "tpacpi::thinklight", 5576 .brightness_set_blocking = &light_sysfs_set, 5577 .brightness_get = &light_sysfs_get, 5578 } 5579 }; 5580 5581 static int __init light_init(struct ibm_init_struct *iibm) 5582 { 5583 int rc; 5584 5585 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5586 5587 if (tpacpi_is_ibm()) { 5588 TPACPI_ACPIHANDLE_INIT(ledb); 5589 TPACPI_ACPIHANDLE_INIT(lght); 5590 } 5591 TPACPI_ACPIHANDLE_INIT(cmos); 5592 5593 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5594 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5595 5596 if (tp_features.light) 5597 /* light status not supported on 5598 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5599 tp_features.light_status = 5600 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5601 5602 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5603 str_supported(tp_features.light), 5604 str_supported(tp_features.light_status)); 5605 5606 if (!tp_features.light) 5607 return 1; 5608 5609 rc = led_classdev_register(&tpacpi_pdev->dev, 5610 &tpacpi_led_thinklight.led_classdev); 5611 5612 if (rc < 0) { 5613 tp_features.light = 0; 5614 tp_features.light_status = 0; 5615 } else { 5616 rc = 0; 5617 } 5618 5619 return rc; 5620 } 5621 5622 static void light_exit(void) 5623 { 5624 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5625 } 5626 5627 static int light_read(struct seq_file *m) 5628 { 5629 int status; 5630 5631 if (!tp_features.light) { 5632 seq_printf(m, "status:\t\tnot supported\n"); 5633 } else if (!tp_features.light_status) { 5634 seq_printf(m, "status:\t\tunknown\n"); 5635 seq_printf(m, "commands:\ton, off\n"); 5636 } else { 5637 status = light_get_status(); 5638 if (status < 0) 5639 return status; 5640 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5641 seq_printf(m, "commands:\ton, off\n"); 5642 } 5643 5644 return 0; 5645 } 5646 5647 static int light_write(char *buf) 5648 { 5649 char *cmd; 5650 int newstatus = 0; 5651 5652 if (!tp_features.light) 5653 return -ENODEV; 5654 5655 while ((cmd = strsep(&buf, ","))) { 5656 if (strlencmp(cmd, "on") == 0) { 5657 newstatus = 1; 5658 } else if (strlencmp(cmd, "off") == 0) { 5659 newstatus = 0; 5660 } else 5661 return -EINVAL; 5662 } 5663 5664 return light_set_status(newstatus); 5665 } 5666 5667 static struct ibm_struct light_driver_data = { 5668 .name = "light", 5669 .read = light_read, 5670 .write = light_write, 5671 .exit = light_exit, 5672 }; 5673 5674 /************************************************************************* 5675 * CMOS subdriver 5676 */ 5677 5678 /* sysfs cmos_command -------------------------------------------------- */ 5679 static ssize_t cmos_command_store(struct device *dev, 5680 struct device_attribute *attr, 5681 const char *buf, size_t count) 5682 { 5683 unsigned long cmos_cmd; 5684 int res; 5685 5686 if (parse_strtoul(buf, 21, &cmos_cmd)) 5687 return -EINVAL; 5688 5689 res = issue_thinkpad_cmos_command(cmos_cmd); 5690 return (res) ? res : count; 5691 } 5692 5693 static DEVICE_ATTR_WO(cmos_command); 5694 5695 /* --------------------------------------------------------------------- */ 5696 5697 static int __init cmos_init(struct ibm_init_struct *iibm) 5698 { 5699 int res; 5700 5701 vdbg_printk(TPACPI_DBG_INIT, 5702 "initializing cmos commands subdriver\n"); 5703 5704 TPACPI_ACPIHANDLE_INIT(cmos); 5705 5706 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5707 str_supported(cmos_handle != NULL)); 5708 5709 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5710 if (res) 5711 return res; 5712 5713 return (cmos_handle) ? 0 : 1; 5714 } 5715 5716 static void cmos_exit(void) 5717 { 5718 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5719 } 5720 5721 static int cmos_read(struct seq_file *m) 5722 { 5723 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5724 R30, R31, T20-22, X20-21 */ 5725 if (!cmos_handle) 5726 seq_printf(m, "status:\t\tnot supported\n"); 5727 else { 5728 seq_printf(m, "status:\t\tsupported\n"); 5729 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5730 } 5731 5732 return 0; 5733 } 5734 5735 static int cmos_write(char *buf) 5736 { 5737 char *cmd; 5738 int cmos_cmd, res; 5739 5740 while ((cmd = strsep(&buf, ","))) { 5741 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5742 cmos_cmd >= 0 && cmos_cmd <= 21) { 5743 /* cmos_cmd set */ 5744 } else 5745 return -EINVAL; 5746 5747 res = issue_thinkpad_cmos_command(cmos_cmd); 5748 if (res) 5749 return res; 5750 } 5751 5752 return 0; 5753 } 5754 5755 static struct ibm_struct cmos_driver_data = { 5756 .name = "cmos", 5757 .read = cmos_read, 5758 .write = cmos_write, 5759 .exit = cmos_exit, 5760 }; 5761 5762 /************************************************************************* 5763 * LED subdriver 5764 */ 5765 5766 enum led_access_mode { 5767 TPACPI_LED_NONE = 0, 5768 TPACPI_LED_570, /* 570 */ 5769 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5770 TPACPI_LED_NEW, /* all others */ 5771 }; 5772 5773 enum { /* For TPACPI_LED_OLD */ 5774 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5775 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5776 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5777 }; 5778 5779 static enum led_access_mode led_supported; 5780 5781 static acpi_handle led_handle; 5782 5783 #define TPACPI_LED_NUMLEDS 16 5784 static struct tpacpi_led_classdev *tpacpi_leds; 5785 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5786 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5787 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5788 "tpacpi::power", 5789 "tpacpi:orange:batt", 5790 "tpacpi:green:batt", 5791 "tpacpi::dock_active", 5792 "tpacpi::bay_active", 5793 "tpacpi::dock_batt", 5794 "tpacpi::unknown_led", 5795 "tpacpi::standby", 5796 "tpacpi::dock_status1", 5797 "tpacpi::dock_status2", 5798 "tpacpi::unknown_led2", 5799 "tpacpi::unknown_led3", 5800 "tpacpi::thinkvantage", 5801 }; 5802 #define TPACPI_SAFE_LEDS 0x1081U 5803 5804 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5805 { 5806 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5807 return false; 5808 #else 5809 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5810 #endif 5811 } 5812 5813 static int led_get_status(const unsigned int led) 5814 { 5815 int status; 5816 enum led_status_t led_s; 5817 5818 switch (led_supported) { 5819 case TPACPI_LED_570: 5820 if (!acpi_evalf(ec_handle, 5821 &status, "GLED", "dd", 1 << led)) 5822 return -EIO; 5823 led_s = (status == 0) ? 5824 TPACPI_LED_OFF : 5825 ((status == 1) ? 5826 TPACPI_LED_ON : 5827 TPACPI_LED_BLINK); 5828 tpacpi_led_state_cache[led] = led_s; 5829 return led_s; 5830 default: 5831 return -ENXIO; 5832 } 5833 5834 /* not reached */ 5835 } 5836 5837 static int led_set_status(const unsigned int led, 5838 const enum led_status_t ledstatus) 5839 { 5840 /* off, on, blink. Index is led_status_t */ 5841 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5842 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5843 5844 int rc = 0; 5845 5846 switch (led_supported) { 5847 case TPACPI_LED_570: 5848 /* 570 */ 5849 if (unlikely(led > 7)) 5850 return -EINVAL; 5851 if (unlikely(tpacpi_is_led_restricted(led))) 5852 return -EPERM; 5853 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5854 (1 << led), led_sled_arg1[ledstatus])) 5855 return -EIO; 5856 break; 5857 case TPACPI_LED_OLD: 5858 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5859 if (unlikely(led > 7)) 5860 return -EINVAL; 5861 if (unlikely(tpacpi_is_led_restricted(led))) 5862 return -EPERM; 5863 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5864 if (rc >= 0) 5865 rc = ec_write(TPACPI_LED_EC_HLBL, 5866 (ledstatus == TPACPI_LED_BLINK) << led); 5867 if (rc >= 0) 5868 rc = ec_write(TPACPI_LED_EC_HLCL, 5869 (ledstatus != TPACPI_LED_OFF) << led); 5870 break; 5871 case TPACPI_LED_NEW: 5872 /* all others */ 5873 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5874 return -EINVAL; 5875 if (unlikely(tpacpi_is_led_restricted(led))) 5876 return -EPERM; 5877 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5878 led, led_led_arg1[ledstatus])) 5879 return -EIO; 5880 break; 5881 default: 5882 return -ENXIO; 5883 } 5884 5885 if (!rc) 5886 tpacpi_led_state_cache[led] = ledstatus; 5887 5888 return rc; 5889 } 5890 5891 static int led_sysfs_set(struct led_classdev *led_cdev, 5892 enum led_brightness brightness) 5893 { 5894 struct tpacpi_led_classdev *data = container_of(led_cdev, 5895 struct tpacpi_led_classdev, led_classdev); 5896 enum led_status_t new_state; 5897 5898 if (brightness == LED_OFF) 5899 new_state = TPACPI_LED_OFF; 5900 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5901 new_state = TPACPI_LED_ON; 5902 else 5903 new_state = TPACPI_LED_BLINK; 5904 5905 return led_set_status(data->led, new_state); 5906 } 5907 5908 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5909 unsigned long *delay_on, unsigned long *delay_off) 5910 { 5911 struct tpacpi_led_classdev *data = container_of(led_cdev, 5912 struct tpacpi_led_classdev, led_classdev); 5913 5914 /* Can we choose the flash rate? */ 5915 if (*delay_on == 0 && *delay_off == 0) { 5916 /* yes. set them to the hardware blink rate (1 Hz) */ 5917 *delay_on = 500; /* ms */ 5918 *delay_off = 500; /* ms */ 5919 } else if ((*delay_on != 500) || (*delay_off != 500)) 5920 return -EINVAL; 5921 5922 return led_set_status(data->led, TPACPI_LED_BLINK); 5923 } 5924 5925 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5926 { 5927 int rc; 5928 5929 struct tpacpi_led_classdev *data = container_of(led_cdev, 5930 struct tpacpi_led_classdev, led_classdev); 5931 5932 rc = led_get_status(data->led); 5933 5934 if (rc == TPACPI_LED_OFF || rc < 0) 5935 rc = LED_OFF; /* no error handling in led class :( */ 5936 else 5937 rc = LED_FULL; 5938 5939 return rc; 5940 } 5941 5942 static void led_exit(void) 5943 { 5944 unsigned int i; 5945 5946 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5947 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5948 5949 kfree(tpacpi_leds); 5950 } 5951 5952 static int __init tpacpi_init_led(unsigned int led) 5953 { 5954 /* LEDs with no name don't get registered */ 5955 if (!tpacpi_led_names[led]) 5956 return 0; 5957 5958 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5959 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5960 if (led_supported == TPACPI_LED_570) 5961 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5962 5963 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5964 tpacpi_leds[led].led = led; 5965 5966 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5967 } 5968 5969 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5970 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5971 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5972 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5973 5974 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5975 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5976 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5977 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5978 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5979 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5980 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5981 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5982 5983 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5984 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5985 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5986 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5987 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5988 5989 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5990 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5991 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5992 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5993 5994 /* (1) - may have excess leds enabled on MSB */ 5995 5996 /* Defaults (order matters, keep last, don't reorder!) */ 5997 { /* Lenovo */ 5998 .vendor = PCI_VENDOR_ID_LENOVO, 5999 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6000 .quirks = 0x1fffU, 6001 }, 6002 { /* IBM ThinkPads with no EC version string */ 6003 .vendor = PCI_VENDOR_ID_IBM, 6004 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 6005 .quirks = 0x00ffU, 6006 }, 6007 { /* IBM ThinkPads with EC version string */ 6008 .vendor = PCI_VENDOR_ID_IBM, 6009 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6010 .quirks = 0x00bfU, 6011 }, 6012 }; 6013 6014 static enum led_access_mode __init led_init_detect_mode(void) 6015 { 6016 acpi_status status; 6017 6018 if (tpacpi_is_ibm()) { 6019 /* 570 */ 6020 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6021 if (ACPI_SUCCESS(status)) 6022 return TPACPI_LED_570; 6023 6024 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6025 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6026 if (ACPI_SUCCESS(status)) 6027 return TPACPI_LED_OLD; 6028 } 6029 6030 /* most others */ 6031 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6032 if (ACPI_SUCCESS(status)) 6033 return TPACPI_LED_NEW; 6034 6035 /* R30, R31, and unknown firmwares */ 6036 led_handle = NULL; 6037 return TPACPI_LED_NONE; 6038 } 6039 6040 static int __init led_init(struct ibm_init_struct *iibm) 6041 { 6042 unsigned int i; 6043 int rc; 6044 unsigned long useful_leds; 6045 6046 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6047 6048 led_supported = led_init_detect_mode(); 6049 6050 if (led_supported != TPACPI_LED_NONE) { 6051 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6052 ARRAY_SIZE(led_useful_qtable)); 6053 6054 if (!useful_leds) { 6055 led_handle = NULL; 6056 led_supported = TPACPI_LED_NONE; 6057 } 6058 } 6059 6060 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6061 str_supported(led_supported), led_supported); 6062 6063 if (led_supported == TPACPI_LED_NONE) 6064 return 1; 6065 6066 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6067 GFP_KERNEL); 6068 if (!tpacpi_leds) { 6069 pr_err("Out of memory for LED data\n"); 6070 return -ENOMEM; 6071 } 6072 6073 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6074 tpacpi_leds[i].led = -1; 6075 6076 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6077 rc = tpacpi_init_led(i); 6078 if (rc < 0) { 6079 led_exit(); 6080 return rc; 6081 } 6082 } 6083 } 6084 6085 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6086 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6087 #endif 6088 return 0; 6089 } 6090 6091 #define str_led_status(s) \ 6092 ((s) == TPACPI_LED_OFF ? "off" : \ 6093 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6094 6095 static int led_read(struct seq_file *m) 6096 { 6097 if (!led_supported) { 6098 seq_printf(m, "status:\t\tnot supported\n"); 6099 return 0; 6100 } 6101 seq_printf(m, "status:\t\tsupported\n"); 6102 6103 if (led_supported == TPACPI_LED_570) { 6104 /* 570 */ 6105 int i, status; 6106 for (i = 0; i < 8; i++) { 6107 status = led_get_status(i); 6108 if (status < 0) 6109 return -EIO; 6110 seq_printf(m, "%d:\t\t%s\n", 6111 i, str_led_status(status)); 6112 } 6113 } 6114 6115 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6116 6117 return 0; 6118 } 6119 6120 static int led_write(char *buf) 6121 { 6122 char *cmd; 6123 int led, rc; 6124 enum led_status_t s; 6125 6126 if (!led_supported) 6127 return -ENODEV; 6128 6129 while ((cmd = strsep(&buf, ","))) { 6130 if (sscanf(cmd, "%d", &led) != 1) 6131 return -EINVAL; 6132 6133 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6134 return -ENODEV; 6135 6136 if (tpacpi_leds[led].led < 0) 6137 return -ENODEV; 6138 6139 if (strstr(cmd, "off")) { 6140 s = TPACPI_LED_OFF; 6141 } else if (strstr(cmd, "on")) { 6142 s = TPACPI_LED_ON; 6143 } else if (strstr(cmd, "blink")) { 6144 s = TPACPI_LED_BLINK; 6145 } else { 6146 return -EINVAL; 6147 } 6148 6149 rc = led_set_status(led, s); 6150 if (rc < 0) 6151 return rc; 6152 } 6153 6154 return 0; 6155 } 6156 6157 static struct ibm_struct led_driver_data = { 6158 .name = "led", 6159 .read = led_read, 6160 .write = led_write, 6161 .exit = led_exit, 6162 }; 6163 6164 /************************************************************************* 6165 * Beep subdriver 6166 */ 6167 6168 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6169 6170 #define TPACPI_BEEP_Q1 0x0001 6171 6172 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6173 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6174 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6175 }; 6176 6177 static int __init beep_init(struct ibm_init_struct *iibm) 6178 { 6179 unsigned long quirks; 6180 6181 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6182 6183 TPACPI_ACPIHANDLE_INIT(beep); 6184 6185 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6186 str_supported(beep_handle != NULL)); 6187 6188 quirks = tpacpi_check_quirks(beep_quirk_table, 6189 ARRAY_SIZE(beep_quirk_table)); 6190 6191 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6192 6193 return (beep_handle) ? 0 : 1; 6194 } 6195 6196 static int beep_read(struct seq_file *m) 6197 { 6198 if (!beep_handle) 6199 seq_printf(m, "status:\t\tnot supported\n"); 6200 else { 6201 seq_printf(m, "status:\t\tsupported\n"); 6202 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6203 } 6204 6205 return 0; 6206 } 6207 6208 static int beep_write(char *buf) 6209 { 6210 char *cmd; 6211 int beep_cmd; 6212 6213 if (!beep_handle) 6214 return -ENODEV; 6215 6216 while ((cmd = strsep(&buf, ","))) { 6217 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6218 beep_cmd >= 0 && beep_cmd <= 17) { 6219 /* beep_cmd set */ 6220 } else 6221 return -EINVAL; 6222 if (tp_features.beep_needs_two_args) { 6223 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6224 beep_cmd, 0)) 6225 return -EIO; 6226 } else { 6227 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6228 beep_cmd)) 6229 return -EIO; 6230 } 6231 } 6232 6233 return 0; 6234 } 6235 6236 static struct ibm_struct beep_driver_data = { 6237 .name = "beep", 6238 .read = beep_read, 6239 .write = beep_write, 6240 }; 6241 6242 /************************************************************************* 6243 * Thermal subdriver 6244 */ 6245 6246 enum thermal_access_mode { 6247 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6248 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6249 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6250 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6251 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6252 }; 6253 6254 enum { /* TPACPI_THERMAL_TPEC_* */ 6255 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6256 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6257 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6258 6259 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6260 }; 6261 6262 6263 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6264 struct ibm_thermal_sensors_struct { 6265 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6266 }; 6267 6268 static enum thermal_access_mode thermal_read_mode; 6269 6270 /* idx is zero-based */ 6271 static int thermal_get_sensor(int idx, s32 *value) 6272 { 6273 int t; 6274 s8 tmp; 6275 char tmpi[5]; 6276 6277 t = TP_EC_THERMAL_TMP0; 6278 6279 switch (thermal_read_mode) { 6280 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6281 case TPACPI_THERMAL_TPEC_16: 6282 if (idx >= 8 && idx <= 15) { 6283 t = TP_EC_THERMAL_TMP8; 6284 idx -= 8; 6285 } 6286 #endif 6287 fallthrough; 6288 case TPACPI_THERMAL_TPEC_8: 6289 if (idx <= 7) { 6290 if (!acpi_ec_read(t + idx, &tmp)) 6291 return -EIO; 6292 *value = tmp * 1000; 6293 return 0; 6294 } 6295 break; 6296 6297 case TPACPI_THERMAL_ACPI_UPDT: 6298 if (idx <= 7) { 6299 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6300 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6301 return -EIO; 6302 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6303 return -EIO; 6304 *value = (t - 2732) * 100; 6305 return 0; 6306 } 6307 break; 6308 6309 case TPACPI_THERMAL_ACPI_TMP07: 6310 if (idx <= 7) { 6311 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6312 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6313 return -EIO; 6314 if (t > 127 || t < -127) 6315 t = TP_EC_THERMAL_TMP_NA; 6316 *value = t * 1000; 6317 return 0; 6318 } 6319 break; 6320 6321 case TPACPI_THERMAL_NONE: 6322 default: 6323 return -ENOSYS; 6324 } 6325 6326 return -EINVAL; 6327 } 6328 6329 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6330 { 6331 int res, i; 6332 int n; 6333 6334 n = 8; 6335 i = 0; 6336 6337 if (!s) 6338 return -EINVAL; 6339 6340 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6341 n = 16; 6342 6343 for (i = 0 ; i < n; i++) { 6344 res = thermal_get_sensor(i, &s->temp[i]); 6345 if (res) 6346 return res; 6347 } 6348 6349 return n; 6350 } 6351 6352 static void thermal_dump_all_sensors(void) 6353 { 6354 int n, i; 6355 struct ibm_thermal_sensors_struct t; 6356 6357 n = thermal_get_sensors(&t); 6358 if (n <= 0) 6359 return; 6360 6361 pr_notice("temperatures (Celsius):"); 6362 6363 for (i = 0; i < n; i++) { 6364 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6365 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6366 else 6367 pr_cont(" N/A"); 6368 } 6369 6370 pr_cont("\n"); 6371 } 6372 6373 /* sysfs temp##_input -------------------------------------------------- */ 6374 6375 static ssize_t thermal_temp_input_show(struct device *dev, 6376 struct device_attribute *attr, 6377 char *buf) 6378 { 6379 struct sensor_device_attribute *sensor_attr = 6380 to_sensor_dev_attr(attr); 6381 int idx = sensor_attr->index; 6382 s32 value; 6383 int res; 6384 6385 res = thermal_get_sensor(idx, &value); 6386 if (res) 6387 return res; 6388 if (value == TPACPI_THERMAL_SENSOR_NA) 6389 return -ENXIO; 6390 6391 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6392 } 6393 6394 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6395 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6396 thermal_temp_input_show, NULL, _idxB) 6397 6398 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6399 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6400 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6401 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6402 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6403 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6404 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6405 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6406 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6407 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6408 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6409 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6410 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6411 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6412 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6413 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6414 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6415 }; 6416 6417 #define THERMAL_ATTRS(X) \ 6418 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6419 6420 static struct attribute *thermal_temp_input_attr[] = { 6421 THERMAL_ATTRS(8), 6422 THERMAL_ATTRS(9), 6423 THERMAL_ATTRS(10), 6424 THERMAL_ATTRS(11), 6425 THERMAL_ATTRS(12), 6426 THERMAL_ATTRS(13), 6427 THERMAL_ATTRS(14), 6428 THERMAL_ATTRS(15), 6429 THERMAL_ATTRS(0), 6430 THERMAL_ATTRS(1), 6431 THERMAL_ATTRS(2), 6432 THERMAL_ATTRS(3), 6433 THERMAL_ATTRS(4), 6434 THERMAL_ATTRS(5), 6435 THERMAL_ATTRS(6), 6436 THERMAL_ATTRS(7), 6437 NULL 6438 }; 6439 6440 static const struct attribute_group thermal_temp_input16_group = { 6441 .attrs = thermal_temp_input_attr 6442 }; 6443 6444 static const struct attribute_group thermal_temp_input8_group = { 6445 .attrs = &thermal_temp_input_attr[8] 6446 }; 6447 6448 #undef THERMAL_SENSOR_ATTR_TEMP 6449 #undef THERMAL_ATTRS 6450 6451 /* --------------------------------------------------------------------- */ 6452 6453 static int __init thermal_init(struct ibm_init_struct *iibm) 6454 { 6455 u8 t, ta1, ta2; 6456 int i; 6457 int acpi_tmp7; 6458 int res; 6459 6460 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6461 6462 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6463 6464 if (thinkpad_id.ec_model) { 6465 /* 6466 * Direct EC access mode: sensors at registers 6467 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6468 * non-implemented, thermal sensors return 0x80 when 6469 * not available 6470 */ 6471 6472 ta1 = ta2 = 0; 6473 for (i = 0; i < 8; i++) { 6474 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6475 ta1 |= t; 6476 } else { 6477 ta1 = 0; 6478 break; 6479 } 6480 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6481 ta2 |= t; 6482 } else { 6483 ta1 = 0; 6484 break; 6485 } 6486 } 6487 if (ta1 == 0) { 6488 /* This is sheer paranoia, but we handle it anyway */ 6489 if (acpi_tmp7) { 6490 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6491 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6492 } else { 6493 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6494 thermal_read_mode = TPACPI_THERMAL_NONE; 6495 } 6496 } else { 6497 thermal_read_mode = 6498 (ta2 != 0) ? 6499 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6500 } 6501 } else if (acpi_tmp7) { 6502 if (tpacpi_is_ibm() && 6503 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6504 /* 600e/x, 770e, 770x */ 6505 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6506 } else { 6507 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6508 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6509 } 6510 } else { 6511 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6512 thermal_read_mode = TPACPI_THERMAL_NONE; 6513 } 6514 6515 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6516 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6517 thermal_read_mode); 6518 6519 switch (thermal_read_mode) { 6520 case TPACPI_THERMAL_TPEC_16: 6521 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6522 &thermal_temp_input16_group); 6523 if (res) 6524 return res; 6525 break; 6526 case TPACPI_THERMAL_TPEC_8: 6527 case TPACPI_THERMAL_ACPI_TMP07: 6528 case TPACPI_THERMAL_ACPI_UPDT: 6529 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6530 &thermal_temp_input8_group); 6531 if (res) 6532 return res; 6533 break; 6534 case TPACPI_THERMAL_NONE: 6535 default: 6536 return 1; 6537 } 6538 6539 return 0; 6540 } 6541 6542 static void thermal_exit(void) 6543 { 6544 switch (thermal_read_mode) { 6545 case TPACPI_THERMAL_TPEC_16: 6546 sysfs_remove_group(&tpacpi_hwmon->kobj, 6547 &thermal_temp_input16_group); 6548 break; 6549 case TPACPI_THERMAL_TPEC_8: 6550 case TPACPI_THERMAL_ACPI_TMP07: 6551 case TPACPI_THERMAL_ACPI_UPDT: 6552 sysfs_remove_group(&tpacpi_hwmon->kobj, 6553 &thermal_temp_input8_group); 6554 break; 6555 case TPACPI_THERMAL_NONE: 6556 default: 6557 break; 6558 } 6559 } 6560 6561 static int thermal_read(struct seq_file *m) 6562 { 6563 int n, i; 6564 struct ibm_thermal_sensors_struct t; 6565 6566 n = thermal_get_sensors(&t); 6567 if (unlikely(n < 0)) 6568 return n; 6569 6570 seq_printf(m, "temperatures:\t"); 6571 6572 if (n > 0) { 6573 for (i = 0; i < (n - 1); i++) 6574 seq_printf(m, "%d ", t.temp[i] / 1000); 6575 seq_printf(m, "%d\n", t.temp[i] / 1000); 6576 } else 6577 seq_printf(m, "not supported\n"); 6578 6579 return 0; 6580 } 6581 6582 static struct ibm_struct thermal_driver_data = { 6583 .name = "thermal", 6584 .read = thermal_read, 6585 .exit = thermal_exit, 6586 }; 6587 6588 /************************************************************************* 6589 * Backlight/brightness subdriver 6590 */ 6591 6592 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6593 6594 /* 6595 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6596 * CMOS NVRAM byte 0x5E, bits 0-3. 6597 * 6598 * EC HBRV (0x31) has the following layout 6599 * Bit 7: unknown function 6600 * Bit 6: unknown function 6601 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6602 * Bit 4: must be set to zero to avoid problems 6603 * Bit 3-0: backlight brightness level 6604 * 6605 * brightness_get_raw returns status data in the HBRV layout 6606 * 6607 * WARNING: The X61 has been verified to use HBRV for something else, so 6608 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6609 * testing on the very early *60 Lenovo models... 6610 */ 6611 6612 enum { 6613 TP_EC_BACKLIGHT = 0x31, 6614 6615 /* TP_EC_BACKLIGHT bitmasks */ 6616 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6617 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6618 TP_EC_BACKLIGHT_MAPSW = 0x20, 6619 }; 6620 6621 enum tpacpi_brightness_access_mode { 6622 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6623 TPACPI_BRGHT_MODE_EC, /* EC control */ 6624 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6625 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6626 TPACPI_BRGHT_MODE_MAX 6627 }; 6628 6629 static struct backlight_device *ibm_backlight_device; 6630 6631 static enum tpacpi_brightness_access_mode brightness_mode = 6632 TPACPI_BRGHT_MODE_MAX; 6633 6634 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6635 6636 static struct mutex brightness_mutex; 6637 6638 /* NVRAM brightness access, 6639 * call with brightness_mutex held! */ 6640 static unsigned int tpacpi_brightness_nvram_get(void) 6641 { 6642 u8 lnvram; 6643 6644 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6645 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6646 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6647 lnvram &= bright_maxlvl; 6648 6649 return lnvram; 6650 } 6651 6652 static void tpacpi_brightness_checkpoint_nvram(void) 6653 { 6654 u8 lec = 0; 6655 u8 b_nvram; 6656 6657 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6658 return; 6659 6660 vdbg_printk(TPACPI_DBG_BRGHT, 6661 "trying to checkpoint backlight level to NVRAM...\n"); 6662 6663 if (mutex_lock_killable(&brightness_mutex) < 0) 6664 return; 6665 6666 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6667 goto unlock; 6668 lec &= TP_EC_BACKLIGHT_LVLMSK; 6669 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6670 6671 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6672 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6673 /* NVRAM needs update */ 6674 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6675 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6676 b_nvram |= lec; 6677 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6678 dbg_printk(TPACPI_DBG_BRGHT, 6679 "updated NVRAM backlight level to %u (0x%02x)\n", 6680 (unsigned int) lec, (unsigned int) b_nvram); 6681 } else 6682 vdbg_printk(TPACPI_DBG_BRGHT, 6683 "NVRAM backlight level already is %u (0x%02x)\n", 6684 (unsigned int) lec, (unsigned int) b_nvram); 6685 6686 unlock: 6687 mutex_unlock(&brightness_mutex); 6688 } 6689 6690 6691 /* call with brightness_mutex held! */ 6692 static int tpacpi_brightness_get_raw(int *status) 6693 { 6694 u8 lec = 0; 6695 6696 switch (brightness_mode) { 6697 case TPACPI_BRGHT_MODE_UCMS_STEP: 6698 *status = tpacpi_brightness_nvram_get(); 6699 return 0; 6700 case TPACPI_BRGHT_MODE_EC: 6701 case TPACPI_BRGHT_MODE_ECNVRAM: 6702 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6703 return -EIO; 6704 *status = lec; 6705 return 0; 6706 default: 6707 return -ENXIO; 6708 } 6709 } 6710 6711 /* call with brightness_mutex held! */ 6712 /* do NOT call with illegal backlight level value */ 6713 static int tpacpi_brightness_set_ec(unsigned int value) 6714 { 6715 u8 lec = 0; 6716 6717 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6718 return -EIO; 6719 6720 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6721 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6722 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6723 return -EIO; 6724 6725 return 0; 6726 } 6727 6728 /* call with brightness_mutex held! */ 6729 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6730 { 6731 int cmos_cmd, inc; 6732 unsigned int current_value, i; 6733 6734 current_value = tpacpi_brightness_nvram_get(); 6735 6736 if (value == current_value) 6737 return 0; 6738 6739 cmos_cmd = (value > current_value) ? 6740 TP_CMOS_BRIGHTNESS_UP : 6741 TP_CMOS_BRIGHTNESS_DOWN; 6742 inc = (value > current_value) ? 1 : -1; 6743 6744 for (i = current_value; i != value; i += inc) 6745 if (issue_thinkpad_cmos_command(cmos_cmd)) 6746 return -EIO; 6747 6748 return 0; 6749 } 6750 6751 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6752 static int brightness_set(unsigned int value) 6753 { 6754 int res; 6755 6756 if (value > bright_maxlvl) 6757 return -EINVAL; 6758 6759 vdbg_printk(TPACPI_DBG_BRGHT, 6760 "set backlight level to %d\n", value); 6761 6762 res = mutex_lock_killable(&brightness_mutex); 6763 if (res < 0) 6764 return res; 6765 6766 switch (brightness_mode) { 6767 case TPACPI_BRGHT_MODE_EC: 6768 case TPACPI_BRGHT_MODE_ECNVRAM: 6769 res = tpacpi_brightness_set_ec(value); 6770 break; 6771 case TPACPI_BRGHT_MODE_UCMS_STEP: 6772 res = tpacpi_brightness_set_ucmsstep(value); 6773 break; 6774 default: 6775 res = -ENXIO; 6776 } 6777 6778 mutex_unlock(&brightness_mutex); 6779 return res; 6780 } 6781 6782 /* sysfs backlight class ----------------------------------------------- */ 6783 6784 static int brightness_update_status(struct backlight_device *bd) 6785 { 6786 unsigned int level = 6787 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6788 bd->props.power == FB_BLANK_UNBLANK) ? 6789 bd->props.brightness : 0; 6790 6791 dbg_printk(TPACPI_DBG_BRGHT, 6792 "backlight: attempt to set level to %d\n", 6793 level); 6794 6795 /* it is the backlight class's job (caller) to handle 6796 * EINTR and other errors properly */ 6797 return brightness_set(level); 6798 } 6799 6800 static int brightness_get(struct backlight_device *bd) 6801 { 6802 int status, res; 6803 6804 res = mutex_lock_killable(&brightness_mutex); 6805 if (res < 0) 6806 return 0; 6807 6808 res = tpacpi_brightness_get_raw(&status); 6809 6810 mutex_unlock(&brightness_mutex); 6811 6812 if (res < 0) 6813 return 0; 6814 6815 return status & TP_EC_BACKLIGHT_LVLMSK; 6816 } 6817 6818 static void tpacpi_brightness_notify_change(void) 6819 { 6820 backlight_force_update(ibm_backlight_device, 6821 BACKLIGHT_UPDATE_HOTKEY); 6822 } 6823 6824 static const struct backlight_ops ibm_backlight_data = { 6825 .get_brightness = brightness_get, 6826 .update_status = brightness_update_status, 6827 }; 6828 6829 /* --------------------------------------------------------------------- */ 6830 6831 /* 6832 * Call _BCL method of video device. On some ThinkPads this will 6833 * switch the firmware to the ACPI brightness control mode. 6834 */ 6835 6836 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6837 { 6838 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6839 union acpi_object *obj; 6840 struct acpi_device *device, *child; 6841 int rc; 6842 6843 if (acpi_bus_get_device(handle, &device)) 6844 return 0; 6845 6846 rc = 0; 6847 list_for_each_entry(child, &device->children, node) { 6848 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6849 NULL, &buffer); 6850 if (ACPI_FAILURE(status)) { 6851 buffer.length = ACPI_ALLOCATE_BUFFER; 6852 continue; 6853 } 6854 6855 obj = (union acpi_object *)buffer.pointer; 6856 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6857 pr_err("Unknown _BCL data, please report this to %s\n", 6858 TPACPI_MAIL); 6859 rc = 0; 6860 } else { 6861 rc = obj->package.count; 6862 } 6863 break; 6864 } 6865 6866 kfree(buffer.pointer); 6867 return rc; 6868 } 6869 6870 6871 /* 6872 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6873 */ 6874 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6875 { 6876 acpi_handle video_device; 6877 int bcl_levels = 0; 6878 6879 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6880 if (video_device) 6881 bcl_levels = tpacpi_query_bcl_levels(video_device); 6882 6883 tp_features.bright_acpimode = (bcl_levels > 0); 6884 6885 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6886 } 6887 6888 /* 6889 * These are only useful for models that have only one possibility 6890 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6891 * these quirks. 6892 */ 6893 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6894 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6895 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6896 6897 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6898 /* Models with ATI GPUs known to require ECNVRAM mode */ 6899 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6900 6901 /* Models with ATI GPUs that can use ECNVRAM */ 6902 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6903 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6904 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6905 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6906 6907 /* Models with Intel Extreme Graphics 2 */ 6908 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6909 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6910 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6911 6912 /* Models with Intel GMA900 */ 6913 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6914 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6915 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6916 }; 6917 6918 /* 6919 * Returns < 0 for error, otherwise sets tp_features.bright_* 6920 * and bright_maxlvl. 6921 */ 6922 static void __init tpacpi_detect_brightness_capabilities(void) 6923 { 6924 unsigned int b; 6925 6926 vdbg_printk(TPACPI_DBG_INIT, 6927 "detecting firmware brightness interface capabilities\n"); 6928 6929 /* we could run a quirks check here (same table used by 6930 * brightness_init) if needed */ 6931 6932 /* 6933 * We always attempt to detect acpi support, so as to switch 6934 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6935 * going to publish a backlight interface 6936 */ 6937 b = tpacpi_check_std_acpi_brightness_support(); 6938 switch (b) { 6939 case 16: 6940 bright_maxlvl = 15; 6941 break; 6942 case 8: 6943 case 0: 6944 bright_maxlvl = 7; 6945 break; 6946 default: 6947 tp_features.bright_unkfw = 1; 6948 bright_maxlvl = b - 1; 6949 } 6950 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6951 } 6952 6953 static int __init brightness_init(struct ibm_init_struct *iibm) 6954 { 6955 struct backlight_properties props; 6956 int b; 6957 unsigned long quirks; 6958 6959 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6960 6961 mutex_init(&brightness_mutex); 6962 6963 quirks = tpacpi_check_quirks(brightness_quirk_table, 6964 ARRAY_SIZE(brightness_quirk_table)); 6965 6966 /* tpacpi_detect_brightness_capabilities() must have run already */ 6967 6968 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6969 if (tp_features.bright_unkfw) 6970 return 1; 6971 6972 if (!brightness_enable) { 6973 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6974 "brightness support disabled by module parameter\n"); 6975 return 1; 6976 } 6977 6978 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6979 if (brightness_enable > 1) { 6980 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6981 return 1; 6982 } else if (brightness_enable == 1) { 6983 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6984 return 1; 6985 } 6986 } else if (!tp_features.bright_acpimode) { 6987 pr_notice("ACPI backlight interface not available\n"); 6988 return 1; 6989 } 6990 6991 pr_notice("ACPI native brightness control enabled\n"); 6992 6993 /* 6994 * Check for module parameter bogosity, note that we 6995 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6996 * able to detect "unspecified" 6997 */ 6998 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6999 return -EINVAL; 7000 7001 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7002 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7003 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7004 if (quirks & TPACPI_BRGHT_Q_EC) 7005 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7006 else 7007 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7008 7009 dbg_printk(TPACPI_DBG_BRGHT, 7010 "driver auto-selected brightness_mode=%d\n", 7011 brightness_mode); 7012 } 7013 7014 /* Safety */ 7015 if (!tpacpi_is_ibm() && 7016 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7017 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7018 return -EINVAL; 7019 7020 if (tpacpi_brightness_get_raw(&b) < 0) 7021 return 1; 7022 7023 memset(&props, 0, sizeof(struct backlight_properties)); 7024 props.type = BACKLIGHT_PLATFORM; 7025 props.max_brightness = bright_maxlvl; 7026 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7027 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7028 NULL, NULL, 7029 &ibm_backlight_data, 7030 &props); 7031 if (IS_ERR(ibm_backlight_device)) { 7032 int rc = PTR_ERR(ibm_backlight_device); 7033 ibm_backlight_device = NULL; 7034 pr_err("Could not register backlight device\n"); 7035 return rc; 7036 } 7037 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7038 "brightness is supported\n"); 7039 7040 if (quirks & TPACPI_BRGHT_Q_ASK) { 7041 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7042 brightness_mode); 7043 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7044 TPACPI_MAIL); 7045 } 7046 7047 /* Added by mistake in early 2007. Probably useless, but it could 7048 * be working around some unknown firmware problem where the value 7049 * read at startup doesn't match the real hardware state... so leave 7050 * it in place just in case */ 7051 backlight_update_status(ibm_backlight_device); 7052 7053 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7054 "brightness: registering brightness hotkeys as change notification\n"); 7055 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7056 | TP_ACPI_HKEY_BRGHTUP_MASK 7057 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7058 return 0; 7059 } 7060 7061 static void brightness_suspend(void) 7062 { 7063 tpacpi_brightness_checkpoint_nvram(); 7064 } 7065 7066 static void brightness_shutdown(void) 7067 { 7068 tpacpi_brightness_checkpoint_nvram(); 7069 } 7070 7071 static void brightness_exit(void) 7072 { 7073 if (ibm_backlight_device) { 7074 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7075 "calling backlight_device_unregister()\n"); 7076 backlight_device_unregister(ibm_backlight_device); 7077 } 7078 7079 tpacpi_brightness_checkpoint_nvram(); 7080 } 7081 7082 static int brightness_read(struct seq_file *m) 7083 { 7084 int level; 7085 7086 level = brightness_get(NULL); 7087 if (level < 0) { 7088 seq_printf(m, "level:\t\tunreadable\n"); 7089 } else { 7090 seq_printf(m, "level:\t\t%d\n", level); 7091 seq_printf(m, "commands:\tup, down\n"); 7092 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7093 bright_maxlvl); 7094 } 7095 7096 return 0; 7097 } 7098 7099 static int brightness_write(char *buf) 7100 { 7101 int level; 7102 int rc; 7103 char *cmd; 7104 7105 level = brightness_get(NULL); 7106 if (level < 0) 7107 return level; 7108 7109 while ((cmd = strsep(&buf, ","))) { 7110 if (strlencmp(cmd, "up") == 0) { 7111 if (level < bright_maxlvl) 7112 level++; 7113 } else if (strlencmp(cmd, "down") == 0) { 7114 if (level > 0) 7115 level--; 7116 } else if (sscanf(cmd, "level %d", &level) == 1 && 7117 level >= 0 && level <= bright_maxlvl) { 7118 /* new level set */ 7119 } else 7120 return -EINVAL; 7121 } 7122 7123 tpacpi_disclose_usertask("procfs brightness", 7124 "set level to %d\n", level); 7125 7126 /* 7127 * Now we know what the final level should be, so we try to set it. 7128 * Doing it this way makes the syscall restartable in case of EINTR 7129 */ 7130 rc = brightness_set(level); 7131 if (!rc && ibm_backlight_device) 7132 backlight_force_update(ibm_backlight_device, 7133 BACKLIGHT_UPDATE_SYSFS); 7134 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7135 } 7136 7137 static struct ibm_struct brightness_driver_data = { 7138 .name = "brightness", 7139 .read = brightness_read, 7140 .write = brightness_write, 7141 .exit = brightness_exit, 7142 .suspend = brightness_suspend, 7143 .shutdown = brightness_shutdown, 7144 }; 7145 7146 /************************************************************************* 7147 * Volume subdriver 7148 */ 7149 7150 /* 7151 * IBM ThinkPads have a simple volume controller with MUTE gating. 7152 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7153 * 7154 * Since the *61 series (and probably also the later *60 series), Lenovo 7155 * ThinkPads only implement the MUTE gate. 7156 * 7157 * EC register 0x30 7158 * Bit 6: MUTE (1 mutes sound) 7159 * Bit 3-0: Volume 7160 * Other bits should be zero as far as we know. 7161 * 7162 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7163 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7164 * such as bit 7 which is used to detect repeated presses of MUTE, 7165 * and we leave them unchanged. 7166 * 7167 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7168 * in response to user input. Unfortunately, this rarely works well. 7169 * The laptop changes the state of its internal MUTE gate and, on some 7170 * models, sends KEY_MUTE, causing any user code that responds to the 7171 * mute button to get confused. The hardware MUTE gate is also 7172 * unnecessary, since user code can handle the mute button without 7173 * kernel or EC help. 7174 * 7175 * To avoid confusing userspace, we simply disable all EC-based mute 7176 * and volume controls when possible. 7177 */ 7178 7179 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7180 7181 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7182 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7183 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7184 7185 #if SNDRV_CARDS <= 32 7186 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7187 #else 7188 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7189 #endif 7190 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7191 static char *alsa_id = "ThinkPadEC"; 7192 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7193 7194 struct tpacpi_alsa_data { 7195 struct snd_card *card; 7196 struct snd_ctl_elem_id *ctl_mute_id; 7197 struct snd_ctl_elem_id *ctl_vol_id; 7198 }; 7199 7200 static struct snd_card *alsa_card; 7201 7202 enum { 7203 TP_EC_AUDIO = 0x30, 7204 7205 /* TP_EC_AUDIO bits */ 7206 TP_EC_AUDIO_MUTESW = 6, 7207 7208 /* TP_EC_AUDIO bitmasks */ 7209 TP_EC_AUDIO_LVL_MSK = 0x0F, 7210 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7211 7212 /* Maximum volume */ 7213 TP_EC_VOLUME_MAX = 14, 7214 }; 7215 7216 enum tpacpi_volume_access_mode { 7217 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7218 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7219 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7220 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7221 TPACPI_VOL_MODE_MAX 7222 }; 7223 7224 enum tpacpi_volume_capabilities { 7225 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7226 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7227 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7228 TPACPI_VOL_CAP_MAX 7229 }; 7230 7231 enum tpacpi_mute_btn_mode { 7232 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7233 /* We don't know what mode 1 is. */ 7234 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7235 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7236 }; 7237 7238 static enum tpacpi_volume_access_mode volume_mode = 7239 TPACPI_VOL_MODE_MAX; 7240 7241 static enum tpacpi_volume_capabilities volume_capabilities; 7242 static bool volume_control_allowed; 7243 static bool software_mute_requested = true; 7244 static bool software_mute_active; 7245 static int software_mute_orig_mode; 7246 7247 /* 7248 * Used to syncronize writers to TP_EC_AUDIO and 7249 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7250 */ 7251 static struct mutex volume_mutex; 7252 7253 static void tpacpi_volume_checkpoint_nvram(void) 7254 { 7255 u8 lec = 0; 7256 u8 b_nvram; 7257 u8 ec_mask; 7258 7259 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7260 return; 7261 if (!volume_control_allowed) 7262 return; 7263 if (software_mute_active) 7264 return; 7265 7266 vdbg_printk(TPACPI_DBG_MIXER, 7267 "trying to checkpoint mixer state to NVRAM...\n"); 7268 7269 if (tp_features.mixer_no_level_control) 7270 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7271 else 7272 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7273 7274 if (mutex_lock_killable(&volume_mutex) < 0) 7275 return; 7276 7277 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7278 goto unlock; 7279 lec &= ec_mask; 7280 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7281 7282 if (lec != (b_nvram & ec_mask)) { 7283 /* NVRAM needs update */ 7284 b_nvram &= ~ec_mask; 7285 b_nvram |= lec; 7286 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7287 dbg_printk(TPACPI_DBG_MIXER, 7288 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7289 (unsigned int) lec, (unsigned int) b_nvram); 7290 } else { 7291 vdbg_printk(TPACPI_DBG_MIXER, 7292 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7293 (unsigned int) lec, (unsigned int) b_nvram); 7294 } 7295 7296 unlock: 7297 mutex_unlock(&volume_mutex); 7298 } 7299 7300 static int volume_get_status_ec(u8 *status) 7301 { 7302 u8 s; 7303 7304 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7305 return -EIO; 7306 7307 *status = s; 7308 7309 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7310 7311 return 0; 7312 } 7313 7314 static int volume_get_status(u8 *status) 7315 { 7316 return volume_get_status_ec(status); 7317 } 7318 7319 static int volume_set_status_ec(const u8 status) 7320 { 7321 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7322 return -EIO; 7323 7324 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7325 7326 /* 7327 * On X200s, and possibly on others, it can take a while for 7328 * reads to become correct. 7329 */ 7330 msleep(1); 7331 7332 return 0; 7333 } 7334 7335 static int volume_set_status(const u8 status) 7336 { 7337 return volume_set_status_ec(status); 7338 } 7339 7340 /* returns < 0 on error, 0 on no change, 1 on change */ 7341 static int __volume_set_mute_ec(const bool mute) 7342 { 7343 int rc; 7344 u8 s, n; 7345 7346 if (mutex_lock_killable(&volume_mutex) < 0) 7347 return -EINTR; 7348 7349 rc = volume_get_status_ec(&s); 7350 if (rc) 7351 goto unlock; 7352 7353 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7354 s & ~TP_EC_AUDIO_MUTESW_MSK; 7355 7356 if (n != s) { 7357 rc = volume_set_status_ec(n); 7358 if (!rc) 7359 rc = 1; 7360 } 7361 7362 unlock: 7363 mutex_unlock(&volume_mutex); 7364 return rc; 7365 } 7366 7367 static int volume_alsa_set_mute(const bool mute) 7368 { 7369 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7370 (mute) ? "" : "un"); 7371 return __volume_set_mute_ec(mute); 7372 } 7373 7374 static int volume_set_mute(const bool mute) 7375 { 7376 int rc; 7377 7378 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7379 (mute) ? "" : "un"); 7380 7381 rc = __volume_set_mute_ec(mute); 7382 return (rc < 0) ? rc : 0; 7383 } 7384 7385 /* returns < 0 on error, 0 on no change, 1 on change */ 7386 static int __volume_set_volume_ec(const u8 vol) 7387 { 7388 int rc; 7389 u8 s, n; 7390 7391 if (vol > TP_EC_VOLUME_MAX) 7392 return -EINVAL; 7393 7394 if (mutex_lock_killable(&volume_mutex) < 0) 7395 return -EINTR; 7396 7397 rc = volume_get_status_ec(&s); 7398 if (rc) 7399 goto unlock; 7400 7401 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7402 7403 if (n != s) { 7404 rc = volume_set_status_ec(n); 7405 if (!rc) 7406 rc = 1; 7407 } 7408 7409 unlock: 7410 mutex_unlock(&volume_mutex); 7411 return rc; 7412 } 7413 7414 static int volume_set_software_mute(bool startup) 7415 { 7416 int result; 7417 7418 if (!tpacpi_is_lenovo()) 7419 return -ENODEV; 7420 7421 if (startup) { 7422 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7423 "HAUM", "qd")) 7424 return -EIO; 7425 7426 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7427 "Initial HAUM setting was %d\n", 7428 software_mute_orig_mode); 7429 } 7430 7431 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7432 (int)TP_EC_MUTE_BTN_NONE)) 7433 return -EIO; 7434 7435 if (result != TP_EC_MUTE_BTN_NONE) 7436 pr_warn("Unexpected SAUM result %d\n", 7437 result); 7438 7439 /* 7440 * In software mute mode, the standard codec controls take 7441 * precendence, so we unmute the ThinkPad HW switch at 7442 * startup. Just on case there are SAUM-capable ThinkPads 7443 * with level controls, set max HW volume as well. 7444 */ 7445 if (tp_features.mixer_no_level_control) 7446 result = volume_set_mute(false); 7447 else 7448 result = volume_set_status(TP_EC_VOLUME_MAX); 7449 7450 if (result != 0) 7451 pr_warn("Failed to unmute the HW mute switch\n"); 7452 7453 return 0; 7454 } 7455 7456 static void volume_exit_software_mute(void) 7457 { 7458 int r; 7459 7460 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7461 || r != software_mute_orig_mode) 7462 pr_warn("Failed to restore mute mode\n"); 7463 } 7464 7465 static int volume_alsa_set_volume(const u8 vol) 7466 { 7467 dbg_printk(TPACPI_DBG_MIXER, 7468 "ALSA: trying to set volume level to %hu\n", vol); 7469 return __volume_set_volume_ec(vol); 7470 } 7471 7472 static void volume_alsa_notify_change(void) 7473 { 7474 struct tpacpi_alsa_data *d; 7475 7476 if (alsa_card && alsa_card->private_data) { 7477 d = alsa_card->private_data; 7478 if (d->ctl_mute_id) 7479 snd_ctl_notify(alsa_card, 7480 SNDRV_CTL_EVENT_MASK_VALUE, 7481 d->ctl_mute_id); 7482 if (d->ctl_vol_id) 7483 snd_ctl_notify(alsa_card, 7484 SNDRV_CTL_EVENT_MASK_VALUE, 7485 d->ctl_vol_id); 7486 } 7487 } 7488 7489 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7490 struct snd_ctl_elem_info *uinfo) 7491 { 7492 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7493 uinfo->count = 1; 7494 uinfo->value.integer.min = 0; 7495 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7496 return 0; 7497 } 7498 7499 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7500 struct snd_ctl_elem_value *ucontrol) 7501 { 7502 u8 s; 7503 int rc; 7504 7505 rc = volume_get_status(&s); 7506 if (rc < 0) 7507 return rc; 7508 7509 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7510 return 0; 7511 } 7512 7513 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7514 struct snd_ctl_elem_value *ucontrol) 7515 { 7516 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7517 ucontrol->value.integer.value[0]); 7518 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7519 } 7520 7521 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7522 7523 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7524 struct snd_ctl_elem_value *ucontrol) 7525 { 7526 u8 s; 7527 int rc; 7528 7529 rc = volume_get_status(&s); 7530 if (rc < 0) 7531 return rc; 7532 7533 ucontrol->value.integer.value[0] = 7534 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7535 return 0; 7536 } 7537 7538 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7539 struct snd_ctl_elem_value *ucontrol) 7540 { 7541 tpacpi_disclose_usertask("ALSA", "%smute\n", 7542 ucontrol->value.integer.value[0] ? 7543 "un" : ""); 7544 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7545 } 7546 7547 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7548 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7549 .name = "Console Playback Volume", 7550 .index = 0, 7551 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7552 .info = volume_alsa_vol_info, 7553 .get = volume_alsa_vol_get, 7554 }; 7555 7556 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7557 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7558 .name = "Console Playback Switch", 7559 .index = 0, 7560 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7561 .info = volume_alsa_mute_info, 7562 .get = volume_alsa_mute_get, 7563 }; 7564 7565 static void volume_suspend(void) 7566 { 7567 tpacpi_volume_checkpoint_nvram(); 7568 } 7569 7570 static void volume_resume(void) 7571 { 7572 if (software_mute_active) { 7573 if (volume_set_software_mute(false) < 0) 7574 pr_warn("Failed to restore software mute\n"); 7575 } else { 7576 volume_alsa_notify_change(); 7577 } 7578 } 7579 7580 static void volume_shutdown(void) 7581 { 7582 tpacpi_volume_checkpoint_nvram(); 7583 } 7584 7585 static void volume_exit(void) 7586 { 7587 if (alsa_card) { 7588 snd_card_free(alsa_card); 7589 alsa_card = NULL; 7590 } 7591 7592 tpacpi_volume_checkpoint_nvram(); 7593 7594 if (software_mute_active) 7595 volume_exit_software_mute(); 7596 } 7597 7598 static int __init volume_create_alsa_mixer(void) 7599 { 7600 struct snd_card *card; 7601 struct tpacpi_alsa_data *data; 7602 struct snd_kcontrol *ctl_vol; 7603 struct snd_kcontrol *ctl_mute; 7604 int rc; 7605 7606 rc = snd_card_new(&tpacpi_pdev->dev, 7607 alsa_index, alsa_id, THIS_MODULE, 7608 sizeof(struct tpacpi_alsa_data), &card); 7609 if (rc < 0 || !card) { 7610 pr_err("Failed to create ALSA card structures: %d\n", rc); 7611 return 1; 7612 } 7613 7614 BUG_ON(!card->private_data); 7615 data = card->private_data; 7616 data->card = card; 7617 7618 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7619 sizeof(card->driver)); 7620 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7621 sizeof(card->shortname)); 7622 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7623 (thinkpad_id.ec_version_str) ? 7624 thinkpad_id.ec_version_str : "(unknown)"); 7625 snprintf(card->longname, sizeof(card->longname), 7626 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7627 (thinkpad_id.ec_version_str) ? 7628 thinkpad_id.ec_version_str : "unknown"); 7629 7630 if (volume_control_allowed) { 7631 volume_alsa_control_vol.put = volume_alsa_vol_put; 7632 volume_alsa_control_vol.access = 7633 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7634 7635 volume_alsa_control_mute.put = volume_alsa_mute_put; 7636 volume_alsa_control_mute.access = 7637 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7638 } 7639 7640 if (!tp_features.mixer_no_level_control) { 7641 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7642 rc = snd_ctl_add(card, ctl_vol); 7643 if (rc < 0) { 7644 pr_err("Failed to create ALSA volume control: %d\n", 7645 rc); 7646 goto err_exit; 7647 } 7648 data->ctl_vol_id = &ctl_vol->id; 7649 } 7650 7651 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7652 rc = snd_ctl_add(card, ctl_mute); 7653 if (rc < 0) { 7654 pr_err("Failed to create ALSA mute control: %d\n", rc); 7655 goto err_exit; 7656 } 7657 data->ctl_mute_id = &ctl_mute->id; 7658 7659 rc = snd_card_register(card); 7660 if (rc < 0) { 7661 pr_err("Failed to register ALSA card: %d\n", rc); 7662 goto err_exit; 7663 } 7664 7665 alsa_card = card; 7666 return 0; 7667 7668 err_exit: 7669 snd_card_free(card); 7670 return 1; 7671 } 7672 7673 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7674 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7675 7676 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7677 /* Whitelist volume level on all IBM by default */ 7678 { .vendor = PCI_VENDOR_ID_IBM, 7679 .bios = TPACPI_MATCH_ANY, 7680 .ec = TPACPI_MATCH_ANY, 7681 .quirks = TPACPI_VOL_Q_LEVEL }, 7682 7683 /* Lenovo models with volume control (needs confirmation) */ 7684 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7685 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7686 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7687 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7688 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7689 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7690 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7691 7692 /* Whitelist mute-only on all Lenovo by default */ 7693 { .vendor = PCI_VENDOR_ID_LENOVO, 7694 .bios = TPACPI_MATCH_ANY, 7695 .ec = TPACPI_MATCH_ANY, 7696 .quirks = TPACPI_VOL_Q_MUTEONLY } 7697 }; 7698 7699 static int __init volume_init(struct ibm_init_struct *iibm) 7700 { 7701 unsigned long quirks; 7702 int rc; 7703 7704 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7705 7706 mutex_init(&volume_mutex); 7707 7708 /* 7709 * Check for module parameter bogosity, note that we 7710 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7711 * able to detect "unspecified" 7712 */ 7713 if (volume_mode > TPACPI_VOL_MODE_MAX) 7714 return -EINVAL; 7715 7716 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7717 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7718 TPACPI_MAIL); 7719 return 1; 7720 } 7721 7722 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7723 return -EINVAL; 7724 7725 /* 7726 * The ALSA mixer is our primary interface. 7727 * When disabled, don't install the subdriver at all 7728 */ 7729 if (!alsa_enable) { 7730 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7731 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7732 return 1; 7733 } 7734 7735 quirks = tpacpi_check_quirks(volume_quirk_table, 7736 ARRAY_SIZE(volume_quirk_table)); 7737 7738 switch (volume_capabilities) { 7739 case TPACPI_VOL_CAP_AUTO: 7740 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7741 tp_features.mixer_no_level_control = 1; 7742 else if (quirks & TPACPI_VOL_Q_LEVEL) 7743 tp_features.mixer_no_level_control = 0; 7744 else 7745 return 1; /* no mixer */ 7746 break; 7747 case TPACPI_VOL_CAP_VOLMUTE: 7748 tp_features.mixer_no_level_control = 0; 7749 break; 7750 case TPACPI_VOL_CAP_MUTEONLY: 7751 tp_features.mixer_no_level_control = 1; 7752 break; 7753 default: 7754 return 1; 7755 } 7756 7757 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7758 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7759 "using user-supplied volume_capabilities=%d\n", 7760 volume_capabilities); 7761 7762 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7763 volume_mode == TPACPI_VOL_MODE_MAX) { 7764 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7765 7766 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7767 "driver auto-selected volume_mode=%d\n", 7768 volume_mode); 7769 } else { 7770 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7771 "using user-supplied volume_mode=%d\n", 7772 volume_mode); 7773 } 7774 7775 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7776 "mute is supported, volume control is %s\n", 7777 str_supported(!tp_features.mixer_no_level_control)); 7778 7779 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7780 software_mute_active = true; 7781 } else { 7782 rc = volume_create_alsa_mixer(); 7783 if (rc) { 7784 pr_err("Could not create the ALSA mixer interface\n"); 7785 return rc; 7786 } 7787 7788 pr_info("Console audio control enabled, mode: %s\n", 7789 (volume_control_allowed) ? 7790 "override (read/write)" : 7791 "monitor (read only)"); 7792 } 7793 7794 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7795 "registering volume hotkeys as change notification\n"); 7796 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7797 | TP_ACPI_HKEY_VOLUP_MASK 7798 | TP_ACPI_HKEY_VOLDWN_MASK 7799 | TP_ACPI_HKEY_MUTE_MASK); 7800 7801 return 0; 7802 } 7803 7804 static int volume_read(struct seq_file *m) 7805 { 7806 u8 status; 7807 7808 if (volume_get_status(&status) < 0) { 7809 seq_printf(m, "level:\t\tunreadable\n"); 7810 } else { 7811 if (tp_features.mixer_no_level_control) 7812 seq_printf(m, "level:\t\tunsupported\n"); 7813 else 7814 seq_printf(m, "level:\t\t%d\n", 7815 status & TP_EC_AUDIO_LVL_MSK); 7816 7817 seq_printf(m, "mute:\t\t%s\n", 7818 onoff(status, TP_EC_AUDIO_MUTESW)); 7819 7820 if (volume_control_allowed) { 7821 seq_printf(m, "commands:\tunmute, mute\n"); 7822 if (!tp_features.mixer_no_level_control) { 7823 seq_printf(m, "commands:\tup, down\n"); 7824 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7825 TP_EC_VOLUME_MAX); 7826 } 7827 } 7828 } 7829 7830 return 0; 7831 } 7832 7833 static int volume_write(char *buf) 7834 { 7835 u8 s; 7836 u8 new_level, new_mute; 7837 int l; 7838 char *cmd; 7839 int rc; 7840 7841 /* 7842 * We do allow volume control at driver startup, so that the 7843 * user can set initial state through the volume=... parameter hack. 7844 */ 7845 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7846 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7847 tp_warned.volume_ctrl_forbidden = 1; 7848 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7849 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7850 } 7851 return -EPERM; 7852 } 7853 7854 rc = volume_get_status(&s); 7855 if (rc < 0) 7856 return rc; 7857 7858 new_level = s & TP_EC_AUDIO_LVL_MSK; 7859 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7860 7861 while ((cmd = strsep(&buf, ","))) { 7862 if (!tp_features.mixer_no_level_control) { 7863 if (strlencmp(cmd, "up") == 0) { 7864 if (new_mute) 7865 new_mute = 0; 7866 else if (new_level < TP_EC_VOLUME_MAX) 7867 new_level++; 7868 continue; 7869 } else if (strlencmp(cmd, "down") == 0) { 7870 if (new_mute) 7871 new_mute = 0; 7872 else if (new_level > 0) 7873 new_level--; 7874 continue; 7875 } else if (sscanf(cmd, "level %u", &l) == 1 && 7876 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7877 new_level = l; 7878 continue; 7879 } 7880 } 7881 if (strlencmp(cmd, "mute") == 0) 7882 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7883 else if (strlencmp(cmd, "unmute") == 0) 7884 new_mute = 0; 7885 else 7886 return -EINVAL; 7887 } 7888 7889 if (tp_features.mixer_no_level_control) { 7890 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7891 new_mute ? "" : "un"); 7892 rc = volume_set_mute(!!new_mute); 7893 } else { 7894 tpacpi_disclose_usertask("procfs volume", 7895 "%smute and set level to %d\n", 7896 new_mute ? "" : "un", new_level); 7897 rc = volume_set_status(new_mute | new_level); 7898 } 7899 volume_alsa_notify_change(); 7900 7901 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7902 } 7903 7904 static struct ibm_struct volume_driver_data = { 7905 .name = "volume", 7906 .read = volume_read, 7907 .write = volume_write, 7908 .exit = volume_exit, 7909 .suspend = volume_suspend, 7910 .resume = volume_resume, 7911 .shutdown = volume_shutdown, 7912 }; 7913 7914 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7915 7916 #define alsa_card NULL 7917 7918 static inline void volume_alsa_notify_change(void) 7919 { 7920 } 7921 7922 static int __init volume_init(struct ibm_init_struct *iibm) 7923 { 7924 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7925 7926 return 1; 7927 } 7928 7929 static struct ibm_struct volume_driver_data = { 7930 .name = "volume", 7931 }; 7932 7933 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7934 7935 /************************************************************************* 7936 * Fan subdriver 7937 */ 7938 7939 /* 7940 * FAN ACCESS MODES 7941 * 7942 * TPACPI_FAN_RD_ACPI_GFAN: 7943 * ACPI GFAN method: returns fan level 7944 * 7945 * see TPACPI_FAN_WR_ACPI_SFAN 7946 * EC 0x2f (HFSP) not available if GFAN exists 7947 * 7948 * TPACPI_FAN_WR_ACPI_SFAN: 7949 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7950 * 7951 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7952 * it for writing. 7953 * 7954 * TPACPI_FAN_WR_TPEC: 7955 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7956 * Supported on almost all ThinkPads 7957 * 7958 * Fan speed changes of any sort (including those caused by the 7959 * disengaged mode) are usually done slowly by the firmware as the 7960 * maximum amount of fan duty cycle change per second seems to be 7961 * limited. 7962 * 7963 * Reading is not available if GFAN exists. 7964 * Writing is not available if SFAN exists. 7965 * 7966 * Bits 7967 * 7 automatic mode engaged; 7968 * (default operation mode of the ThinkPad) 7969 * fan level is ignored in this mode. 7970 * 6 full speed mode (takes precedence over bit 7); 7971 * not available on all thinkpads. May disable 7972 * the tachometer while the fan controller ramps up 7973 * the speed (which can take up to a few *minutes*). 7974 * Speeds up fan to 100% duty-cycle, which is far above 7975 * the standard RPM levels. It is not impossible that 7976 * it could cause hardware damage. 7977 * 5-3 unused in some models. Extra bits for fan level 7978 * in others, but still useless as all values above 7979 * 7 map to the same speed as level 7 in these models. 7980 * 2-0 fan level (0..7 usually) 7981 * 0x00 = stop 7982 * 0x07 = max (set when temperatures critical) 7983 * Some ThinkPads may have other levels, see 7984 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7985 * 7986 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7987 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7988 * does so, its initial value is meaningless (0x07). 7989 * 7990 * For firmware bugs, refer to: 7991 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7992 * 7993 * ---- 7994 * 7995 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7996 * Main fan tachometer reading (in RPM) 7997 * 7998 * This register is present on all ThinkPads with a new-style EC, and 7999 * it is known not to be present on the A21m/e, and T22, as there is 8000 * something else in offset 0x84 according to the ACPI DSDT. Other 8001 * ThinkPads from this same time period (and earlier) probably lack the 8002 * tachometer as well. 8003 * 8004 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8005 * was never fixed by IBM to report the EC firmware version string 8006 * probably support the tachometer (like the early X models), so 8007 * detecting it is quite hard. We need more data to know for sure. 8008 * 8009 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8010 * might result. 8011 * 8012 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8013 * mode. 8014 * 8015 * For firmware bugs, refer to: 8016 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8017 * 8018 * ---- 8019 * 8020 * ThinkPad EC register 0x31 bit 0 (only on select models) 8021 * 8022 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8023 * show the speed of the main fan. When bit 0 of EC register 0x31 8024 * is one, the tachometer registers show the speed of the auxiliary 8025 * fan. 8026 * 8027 * Fan control seems to affect both fans, regardless of the state 8028 * of this bit. 8029 * 8030 * So far, only the firmware for the X60/X61 non-tablet versions 8031 * seem to support this (firmware TP-7M). 8032 * 8033 * TPACPI_FAN_WR_ACPI_FANS: 8034 * ThinkPad X31, X40, X41. Not available in the X60. 8035 * 8036 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8037 * high speed. ACPI DSDT seems to map these three speeds to levels 8038 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8039 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8040 * 8041 * The speeds are stored on handles 8042 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8043 * 8044 * There are three default speed sets, accessible as handles: 8045 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8046 * 8047 * ACPI DSDT switches which set is in use depending on various 8048 * factors. 8049 * 8050 * TPACPI_FAN_WR_TPEC is also available and should be used to 8051 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8052 * but the ACPI tables just mention level 7. 8053 */ 8054 8055 enum { /* Fan control constants */ 8056 fan_status_offset = 0x2f, /* EC register 0x2f */ 8057 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8058 * 0x84 must be read before 0x85 */ 8059 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8060 bit 0 selects which fan is active */ 8061 8062 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8063 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8064 8065 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8066 }; 8067 8068 enum fan_status_access_mode { 8069 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8070 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8071 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8072 }; 8073 8074 enum fan_control_access_mode { 8075 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8076 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8077 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8078 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8079 }; 8080 8081 enum fan_control_commands { 8082 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8083 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8084 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8085 * and also watchdog cmd */ 8086 }; 8087 8088 static bool fan_control_allowed; 8089 8090 static enum fan_status_access_mode fan_status_access_mode; 8091 static enum fan_control_access_mode fan_control_access_mode; 8092 static enum fan_control_commands fan_control_commands; 8093 8094 static u8 fan_control_initial_status; 8095 static u8 fan_control_desired_level; 8096 static u8 fan_control_resume_level; 8097 static int fan_watchdog_maxinterval; 8098 8099 static struct mutex fan_mutex; 8100 8101 static void fan_watchdog_fire(struct work_struct *ignored); 8102 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8103 8104 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8105 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8106 "\\FSPD", /* 600e/x, 770e, 770x */ 8107 ); /* all others */ 8108 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8109 "JFNS", /* 770x-JL */ 8110 ); /* all others */ 8111 8112 /* 8113 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8114 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8115 * be in auto mode (0x80). 8116 * 8117 * This is corrected by any write to HFSP either by the driver, or 8118 * by the firmware. 8119 * 8120 * We assume 0x07 really means auto mode while this quirk is active, 8121 * as this is far more likely than the ThinkPad being in level 7, 8122 * which is only used by the firmware during thermal emergencies. 8123 * 8124 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8125 * TP-70 (T43, R52), which are known to be buggy. 8126 */ 8127 8128 static void fan_quirk1_setup(void) 8129 { 8130 if (fan_control_initial_status == 0x07) { 8131 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8132 tp_features.fan_ctrl_status_undef = 1; 8133 } 8134 } 8135 8136 static void fan_quirk1_handle(u8 *fan_status) 8137 { 8138 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8139 if (*fan_status != fan_control_initial_status) { 8140 /* something changed the HFSP regisnter since 8141 * driver init time, so it is not undefined 8142 * anymore */ 8143 tp_features.fan_ctrl_status_undef = 0; 8144 } else { 8145 /* Return most likely status. In fact, it 8146 * might be the only possible status */ 8147 *fan_status = TP_EC_FAN_AUTO; 8148 } 8149 } 8150 } 8151 8152 /* Select main fan on X60/X61, NOOP on others */ 8153 static bool fan_select_fan1(void) 8154 { 8155 if (tp_features.second_fan) { 8156 u8 val; 8157 8158 if (ec_read(fan_select_offset, &val) < 0) 8159 return false; 8160 val &= 0xFEU; 8161 if (ec_write(fan_select_offset, val) < 0) 8162 return false; 8163 } 8164 return true; 8165 } 8166 8167 /* Select secondary fan on X60/X61 */ 8168 static bool fan_select_fan2(void) 8169 { 8170 u8 val; 8171 8172 if (!tp_features.second_fan) 8173 return false; 8174 8175 if (ec_read(fan_select_offset, &val) < 0) 8176 return false; 8177 val |= 0x01U; 8178 if (ec_write(fan_select_offset, val) < 0) 8179 return false; 8180 8181 return true; 8182 } 8183 8184 /* 8185 * Call with fan_mutex held 8186 */ 8187 static void fan_update_desired_level(u8 status) 8188 { 8189 if ((status & 8190 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8191 if (status > 7) 8192 fan_control_desired_level = 7; 8193 else 8194 fan_control_desired_level = status; 8195 } 8196 } 8197 8198 static int fan_get_status(u8 *status) 8199 { 8200 u8 s; 8201 8202 /* TODO: 8203 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8204 8205 switch (fan_status_access_mode) { 8206 case TPACPI_FAN_RD_ACPI_GFAN: { 8207 /* 570, 600e/x, 770e, 770x */ 8208 int res; 8209 8210 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8211 return -EIO; 8212 8213 if (likely(status)) 8214 *status = res & 0x07; 8215 8216 break; 8217 } 8218 case TPACPI_FAN_RD_TPEC: 8219 /* all except 570, 600e/x, 770e, 770x */ 8220 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8221 return -EIO; 8222 8223 if (likely(status)) { 8224 *status = s; 8225 fan_quirk1_handle(status); 8226 } 8227 8228 break; 8229 8230 default: 8231 return -ENXIO; 8232 } 8233 8234 return 0; 8235 } 8236 8237 static int fan_get_status_safe(u8 *status) 8238 { 8239 int rc; 8240 u8 s; 8241 8242 if (mutex_lock_killable(&fan_mutex)) 8243 return -ERESTARTSYS; 8244 rc = fan_get_status(&s); 8245 if (!rc) 8246 fan_update_desired_level(s); 8247 mutex_unlock(&fan_mutex); 8248 8249 if (rc) 8250 return rc; 8251 if (status) 8252 *status = s; 8253 8254 return 0; 8255 } 8256 8257 static int fan_get_speed(unsigned int *speed) 8258 { 8259 u8 hi, lo; 8260 8261 switch (fan_status_access_mode) { 8262 case TPACPI_FAN_RD_TPEC: 8263 /* all except 570, 600e/x, 770e, 770x */ 8264 if (unlikely(!fan_select_fan1())) 8265 return -EIO; 8266 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8267 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8268 return -EIO; 8269 8270 if (likely(speed)) 8271 *speed = (hi << 8) | lo; 8272 8273 break; 8274 8275 default: 8276 return -ENXIO; 8277 } 8278 8279 return 0; 8280 } 8281 8282 static int fan2_get_speed(unsigned int *speed) 8283 { 8284 u8 hi, lo; 8285 bool rc; 8286 8287 switch (fan_status_access_mode) { 8288 case TPACPI_FAN_RD_TPEC: 8289 /* all except 570, 600e/x, 770e, 770x */ 8290 if (unlikely(!fan_select_fan2())) 8291 return -EIO; 8292 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8293 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8294 fan_select_fan1(); /* play it safe */ 8295 if (rc) 8296 return -EIO; 8297 8298 if (likely(speed)) 8299 *speed = (hi << 8) | lo; 8300 8301 break; 8302 8303 default: 8304 return -ENXIO; 8305 } 8306 8307 return 0; 8308 } 8309 8310 static int fan_set_level(int level) 8311 { 8312 if (!fan_control_allowed) 8313 return -EPERM; 8314 8315 switch (fan_control_access_mode) { 8316 case TPACPI_FAN_WR_ACPI_SFAN: 8317 if ((level < 0) || (level > 7)) 8318 return -EINVAL; 8319 8320 if (tp_features.second_fan_ctl) { 8321 if (!fan_select_fan2() || 8322 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8323 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8324 tp_features.second_fan_ctl = 0; 8325 } 8326 fan_select_fan1(); 8327 } 8328 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8329 return -EIO; 8330 break; 8331 8332 case TPACPI_FAN_WR_ACPI_FANS: 8333 case TPACPI_FAN_WR_TPEC: 8334 if (!(level & TP_EC_FAN_AUTO) && 8335 !(level & TP_EC_FAN_FULLSPEED) && 8336 ((level < 0) || (level > 7))) 8337 return -EINVAL; 8338 8339 /* safety net should the EC not support AUTO 8340 * or FULLSPEED mode bits and just ignore them */ 8341 if (level & TP_EC_FAN_FULLSPEED) 8342 level |= 7; /* safety min speed 7 */ 8343 else if (level & TP_EC_FAN_AUTO) 8344 level |= 4; /* safety min speed 4 */ 8345 8346 if (tp_features.second_fan_ctl) { 8347 if (!fan_select_fan2() || 8348 !acpi_ec_write(fan_status_offset, level)) { 8349 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8350 tp_features.second_fan_ctl = 0; 8351 } 8352 fan_select_fan1(); 8353 8354 } 8355 if (!acpi_ec_write(fan_status_offset, level)) 8356 return -EIO; 8357 else 8358 tp_features.fan_ctrl_status_undef = 0; 8359 break; 8360 8361 default: 8362 return -ENXIO; 8363 } 8364 8365 vdbg_printk(TPACPI_DBG_FAN, 8366 "fan control: set fan control register to 0x%02x\n", level); 8367 return 0; 8368 } 8369 8370 static int fan_set_level_safe(int level) 8371 { 8372 int rc; 8373 8374 if (!fan_control_allowed) 8375 return -EPERM; 8376 8377 if (mutex_lock_killable(&fan_mutex)) 8378 return -ERESTARTSYS; 8379 8380 if (level == TPACPI_FAN_LAST_LEVEL) 8381 level = fan_control_desired_level; 8382 8383 rc = fan_set_level(level); 8384 if (!rc) 8385 fan_update_desired_level(level); 8386 8387 mutex_unlock(&fan_mutex); 8388 return rc; 8389 } 8390 8391 static int fan_set_enable(void) 8392 { 8393 u8 s; 8394 int rc; 8395 8396 if (!fan_control_allowed) 8397 return -EPERM; 8398 8399 if (mutex_lock_killable(&fan_mutex)) 8400 return -ERESTARTSYS; 8401 8402 switch (fan_control_access_mode) { 8403 case TPACPI_FAN_WR_ACPI_FANS: 8404 case TPACPI_FAN_WR_TPEC: 8405 rc = fan_get_status(&s); 8406 if (rc < 0) 8407 break; 8408 8409 /* Don't go out of emergency fan mode */ 8410 if (s != 7) { 8411 s &= 0x07; 8412 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8413 } 8414 8415 if (!acpi_ec_write(fan_status_offset, s)) 8416 rc = -EIO; 8417 else { 8418 tp_features.fan_ctrl_status_undef = 0; 8419 rc = 0; 8420 } 8421 break; 8422 8423 case TPACPI_FAN_WR_ACPI_SFAN: 8424 rc = fan_get_status(&s); 8425 if (rc < 0) 8426 break; 8427 8428 s &= 0x07; 8429 8430 /* Set fan to at least level 4 */ 8431 s |= 4; 8432 8433 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8434 rc = -EIO; 8435 else 8436 rc = 0; 8437 break; 8438 8439 default: 8440 rc = -ENXIO; 8441 } 8442 8443 mutex_unlock(&fan_mutex); 8444 8445 if (!rc) 8446 vdbg_printk(TPACPI_DBG_FAN, 8447 "fan control: set fan control register to 0x%02x\n", 8448 s); 8449 return rc; 8450 } 8451 8452 static int fan_set_disable(void) 8453 { 8454 int rc; 8455 8456 if (!fan_control_allowed) 8457 return -EPERM; 8458 8459 if (mutex_lock_killable(&fan_mutex)) 8460 return -ERESTARTSYS; 8461 8462 rc = 0; 8463 switch (fan_control_access_mode) { 8464 case TPACPI_FAN_WR_ACPI_FANS: 8465 case TPACPI_FAN_WR_TPEC: 8466 if (!acpi_ec_write(fan_status_offset, 0x00)) 8467 rc = -EIO; 8468 else { 8469 fan_control_desired_level = 0; 8470 tp_features.fan_ctrl_status_undef = 0; 8471 } 8472 break; 8473 8474 case TPACPI_FAN_WR_ACPI_SFAN: 8475 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8476 rc = -EIO; 8477 else 8478 fan_control_desired_level = 0; 8479 break; 8480 8481 default: 8482 rc = -ENXIO; 8483 } 8484 8485 if (!rc) 8486 vdbg_printk(TPACPI_DBG_FAN, 8487 "fan control: set fan control register to 0\n"); 8488 8489 mutex_unlock(&fan_mutex); 8490 return rc; 8491 } 8492 8493 static int fan_set_speed(int speed) 8494 { 8495 int rc; 8496 8497 if (!fan_control_allowed) 8498 return -EPERM; 8499 8500 if (mutex_lock_killable(&fan_mutex)) 8501 return -ERESTARTSYS; 8502 8503 rc = 0; 8504 switch (fan_control_access_mode) { 8505 case TPACPI_FAN_WR_ACPI_FANS: 8506 if (speed >= 0 && speed <= 65535) { 8507 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8508 speed, speed, speed)) 8509 rc = -EIO; 8510 } else 8511 rc = -EINVAL; 8512 break; 8513 8514 default: 8515 rc = -ENXIO; 8516 } 8517 8518 mutex_unlock(&fan_mutex); 8519 return rc; 8520 } 8521 8522 static void fan_watchdog_reset(void) 8523 { 8524 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8525 return; 8526 8527 if (fan_watchdog_maxinterval > 0 && 8528 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8529 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8530 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8531 else 8532 cancel_delayed_work(&fan_watchdog_task); 8533 } 8534 8535 static void fan_watchdog_fire(struct work_struct *ignored) 8536 { 8537 int rc; 8538 8539 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8540 return; 8541 8542 pr_notice("fan watchdog: enabling fan\n"); 8543 rc = fan_set_enable(); 8544 if (rc < 0) { 8545 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8546 rc); 8547 /* reschedule for later */ 8548 fan_watchdog_reset(); 8549 } 8550 } 8551 8552 /* 8553 * SYSFS fan layout: hwmon compatible (device) 8554 * 8555 * pwm*_enable: 8556 * 0: "disengaged" mode 8557 * 1: manual mode 8558 * 2: native EC "auto" mode (recommended, hardware default) 8559 * 8560 * pwm*: set speed in manual mode, ignored otherwise. 8561 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8562 * interpolation. 8563 * 8564 * fan*_input: tachometer reading, RPM 8565 * 8566 * 8567 * SYSFS fan layout: extensions 8568 * 8569 * fan_watchdog (driver): 8570 * fan watchdog interval in seconds, 0 disables (default), max 120 8571 */ 8572 8573 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8574 static ssize_t fan_pwm1_enable_show(struct device *dev, 8575 struct device_attribute *attr, 8576 char *buf) 8577 { 8578 int res, mode; 8579 u8 status; 8580 8581 res = fan_get_status_safe(&status); 8582 if (res) 8583 return res; 8584 8585 if (status & TP_EC_FAN_FULLSPEED) { 8586 mode = 0; 8587 } else if (status & TP_EC_FAN_AUTO) { 8588 mode = 2; 8589 } else 8590 mode = 1; 8591 8592 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8593 } 8594 8595 static ssize_t fan_pwm1_enable_store(struct device *dev, 8596 struct device_attribute *attr, 8597 const char *buf, size_t count) 8598 { 8599 unsigned long t; 8600 int res, level; 8601 8602 if (parse_strtoul(buf, 2, &t)) 8603 return -EINVAL; 8604 8605 tpacpi_disclose_usertask("hwmon pwm1_enable", 8606 "set fan mode to %lu\n", t); 8607 8608 switch (t) { 8609 case 0: 8610 level = TP_EC_FAN_FULLSPEED; 8611 break; 8612 case 1: 8613 level = TPACPI_FAN_LAST_LEVEL; 8614 break; 8615 case 2: 8616 level = TP_EC_FAN_AUTO; 8617 break; 8618 case 3: 8619 /* reserved for software-controlled auto mode */ 8620 return -ENOSYS; 8621 default: 8622 return -EINVAL; 8623 } 8624 8625 res = fan_set_level_safe(level); 8626 if (res == -ENXIO) 8627 return -EINVAL; 8628 else if (res < 0) 8629 return res; 8630 8631 fan_watchdog_reset(); 8632 8633 return count; 8634 } 8635 8636 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8637 fan_pwm1_enable_show, fan_pwm1_enable_store); 8638 8639 /* sysfs fan pwm1 ------------------------------------------------------ */ 8640 static ssize_t fan_pwm1_show(struct device *dev, 8641 struct device_attribute *attr, 8642 char *buf) 8643 { 8644 int res; 8645 u8 status; 8646 8647 res = fan_get_status_safe(&status); 8648 if (res) 8649 return res; 8650 8651 if ((status & 8652 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8653 status = fan_control_desired_level; 8654 8655 if (status > 7) 8656 status = 7; 8657 8658 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8659 } 8660 8661 static ssize_t fan_pwm1_store(struct device *dev, 8662 struct device_attribute *attr, 8663 const char *buf, size_t count) 8664 { 8665 unsigned long s; 8666 int rc; 8667 u8 status, newlevel; 8668 8669 if (parse_strtoul(buf, 255, &s)) 8670 return -EINVAL; 8671 8672 tpacpi_disclose_usertask("hwmon pwm1", 8673 "set fan speed to %lu\n", s); 8674 8675 /* scale down from 0-255 to 0-7 */ 8676 newlevel = (s >> 5) & 0x07; 8677 8678 if (mutex_lock_killable(&fan_mutex)) 8679 return -ERESTARTSYS; 8680 8681 rc = fan_get_status(&status); 8682 if (!rc && (status & 8683 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8684 rc = fan_set_level(newlevel); 8685 if (rc == -ENXIO) 8686 rc = -EINVAL; 8687 else if (!rc) { 8688 fan_update_desired_level(newlevel); 8689 fan_watchdog_reset(); 8690 } 8691 } 8692 8693 mutex_unlock(&fan_mutex); 8694 return (rc) ? rc : count; 8695 } 8696 8697 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8698 8699 /* sysfs fan fan1_input ------------------------------------------------ */ 8700 static ssize_t fan_fan1_input_show(struct device *dev, 8701 struct device_attribute *attr, 8702 char *buf) 8703 { 8704 int res; 8705 unsigned int speed; 8706 8707 res = fan_get_speed(&speed); 8708 if (res < 0) 8709 return res; 8710 8711 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8712 } 8713 8714 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8715 8716 /* sysfs fan fan2_input ------------------------------------------------ */ 8717 static ssize_t fan_fan2_input_show(struct device *dev, 8718 struct device_attribute *attr, 8719 char *buf) 8720 { 8721 int res; 8722 unsigned int speed; 8723 8724 res = fan2_get_speed(&speed); 8725 if (res < 0) 8726 return res; 8727 8728 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8729 } 8730 8731 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8732 8733 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8734 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8735 { 8736 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8737 } 8738 8739 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8740 size_t count) 8741 { 8742 unsigned long t; 8743 8744 if (parse_strtoul(buf, 120, &t)) 8745 return -EINVAL; 8746 8747 if (!fan_control_allowed) 8748 return -EPERM; 8749 8750 fan_watchdog_maxinterval = t; 8751 fan_watchdog_reset(); 8752 8753 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8754 8755 return count; 8756 } 8757 static DRIVER_ATTR_RW(fan_watchdog); 8758 8759 /* --------------------------------------------------------------------- */ 8760 static struct attribute *fan_attributes[] = { 8761 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8762 &dev_attr_fan1_input.attr, 8763 NULL, /* for fan2_input */ 8764 NULL 8765 }; 8766 8767 static const struct attribute_group fan_attr_group = { 8768 .attrs = fan_attributes, 8769 }; 8770 8771 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8772 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8773 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8774 8775 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8776 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8777 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8778 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8779 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8780 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8781 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8782 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8783 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8784 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8785 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8786 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8787 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8788 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8789 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8790 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8791 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8792 }; 8793 8794 static int __init fan_init(struct ibm_init_struct *iibm) 8795 { 8796 int rc; 8797 unsigned long quirks; 8798 8799 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8800 "initializing fan subdriver\n"); 8801 8802 mutex_init(&fan_mutex); 8803 fan_status_access_mode = TPACPI_FAN_NONE; 8804 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8805 fan_control_commands = 0; 8806 fan_watchdog_maxinterval = 0; 8807 tp_features.fan_ctrl_status_undef = 0; 8808 tp_features.second_fan = 0; 8809 tp_features.second_fan_ctl = 0; 8810 fan_control_desired_level = 7; 8811 8812 if (tpacpi_is_ibm()) { 8813 TPACPI_ACPIHANDLE_INIT(fans); 8814 TPACPI_ACPIHANDLE_INIT(gfan); 8815 TPACPI_ACPIHANDLE_INIT(sfan); 8816 } 8817 8818 quirks = tpacpi_check_quirks(fan_quirk_table, 8819 ARRAY_SIZE(fan_quirk_table)); 8820 8821 if (gfan_handle) { 8822 /* 570, 600e/x, 770e, 770x */ 8823 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8824 } else { 8825 /* all other ThinkPads: note that even old-style 8826 * ThinkPad ECs supports the fan control register */ 8827 if (likely(acpi_ec_read(fan_status_offset, 8828 &fan_control_initial_status))) { 8829 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8830 if (quirks & TPACPI_FAN_Q1) 8831 fan_quirk1_setup(); 8832 if (quirks & TPACPI_FAN_2FAN) { 8833 tp_features.second_fan = 1; 8834 pr_info("secondary fan support enabled\n"); 8835 } 8836 if (quirks & TPACPI_FAN_2CTL) { 8837 tp_features.second_fan = 1; 8838 tp_features.second_fan_ctl = 1; 8839 pr_info("secondary fan control enabled\n"); 8840 } 8841 } else { 8842 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8843 return 1; 8844 } 8845 } 8846 8847 if (sfan_handle) { 8848 /* 570, 770x-JL */ 8849 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8850 fan_control_commands |= 8851 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8852 } else { 8853 if (!gfan_handle) { 8854 /* gfan without sfan means no fan control */ 8855 /* all other models implement TP EC 0x2f control */ 8856 8857 if (fans_handle) { 8858 /* X31, X40, X41 */ 8859 fan_control_access_mode = 8860 TPACPI_FAN_WR_ACPI_FANS; 8861 fan_control_commands |= 8862 TPACPI_FAN_CMD_SPEED | 8863 TPACPI_FAN_CMD_LEVEL | 8864 TPACPI_FAN_CMD_ENABLE; 8865 } else { 8866 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8867 fan_control_commands |= 8868 TPACPI_FAN_CMD_LEVEL | 8869 TPACPI_FAN_CMD_ENABLE; 8870 } 8871 } 8872 } 8873 8874 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8875 "fan is %s, modes %d, %d\n", 8876 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8877 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8878 fan_status_access_mode, fan_control_access_mode); 8879 8880 /* fan control master switch */ 8881 if (!fan_control_allowed) { 8882 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8883 fan_control_commands = 0; 8884 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8885 "fan control features disabled by parameter\n"); 8886 } 8887 8888 /* update fan_control_desired_level */ 8889 if (fan_status_access_mode != TPACPI_FAN_NONE) 8890 fan_get_status_safe(NULL); 8891 8892 if (fan_status_access_mode != TPACPI_FAN_NONE || 8893 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8894 if (tp_features.second_fan) { 8895 /* attach second fan tachometer */ 8896 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8897 &dev_attr_fan2_input.attr; 8898 } 8899 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8900 &fan_attr_group); 8901 if (rc < 0) 8902 return rc; 8903 8904 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8905 &driver_attr_fan_watchdog); 8906 if (rc < 0) { 8907 sysfs_remove_group(&tpacpi_hwmon->kobj, 8908 &fan_attr_group); 8909 return rc; 8910 } 8911 return 0; 8912 } else 8913 return 1; 8914 } 8915 8916 static void fan_exit(void) 8917 { 8918 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8919 "cancelling any pending fan watchdog tasks\n"); 8920 8921 /* FIXME: can we really do this unconditionally? */ 8922 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8923 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8924 &driver_attr_fan_watchdog); 8925 8926 cancel_delayed_work(&fan_watchdog_task); 8927 flush_workqueue(tpacpi_wq); 8928 } 8929 8930 static void fan_suspend(void) 8931 { 8932 int rc; 8933 8934 if (!fan_control_allowed) 8935 return; 8936 8937 /* Store fan status in cache */ 8938 fan_control_resume_level = 0; 8939 rc = fan_get_status_safe(&fan_control_resume_level); 8940 if (rc < 0) 8941 pr_notice("failed to read fan level for later restore during resume: %d\n", 8942 rc); 8943 8944 /* if it is undefined, don't attempt to restore it. 8945 * KEEP THIS LAST */ 8946 if (tp_features.fan_ctrl_status_undef) 8947 fan_control_resume_level = 0; 8948 } 8949 8950 static void fan_resume(void) 8951 { 8952 u8 current_level = 7; 8953 bool do_set = false; 8954 int rc; 8955 8956 /* DSDT *always* updates status on resume */ 8957 tp_features.fan_ctrl_status_undef = 0; 8958 8959 if (!fan_control_allowed || 8960 !fan_control_resume_level || 8961 (fan_get_status_safe(¤t_level) < 0)) 8962 return; 8963 8964 switch (fan_control_access_mode) { 8965 case TPACPI_FAN_WR_ACPI_SFAN: 8966 /* never decrease fan level */ 8967 do_set = (fan_control_resume_level > current_level); 8968 break; 8969 case TPACPI_FAN_WR_ACPI_FANS: 8970 case TPACPI_FAN_WR_TPEC: 8971 /* never decrease fan level, scale is: 8972 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8973 * 8974 * We expect the firmware to set either 7 or AUTO, but we 8975 * handle FULLSPEED out of paranoia. 8976 * 8977 * So, we can safely only restore FULLSPEED or 7, anything 8978 * else could slow the fan. Restoring AUTO is useless, at 8979 * best that's exactly what the DSDT already set (it is the 8980 * slower it uses). 8981 * 8982 * Always keep in mind that the DSDT *will* have set the 8983 * fans to what the vendor supposes is the best level. We 8984 * muck with it only to speed the fan up. 8985 */ 8986 if (fan_control_resume_level != 7 && 8987 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8988 return; 8989 else 8990 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8991 (current_level != fan_control_resume_level); 8992 break; 8993 default: 8994 return; 8995 } 8996 if (do_set) { 8997 pr_notice("restoring fan level to 0x%02x\n", 8998 fan_control_resume_level); 8999 rc = fan_set_level_safe(fan_control_resume_level); 9000 if (rc < 0) 9001 pr_notice("failed to restore fan level: %d\n", rc); 9002 } 9003 } 9004 9005 static int fan_read(struct seq_file *m) 9006 { 9007 int rc; 9008 u8 status; 9009 unsigned int speed = 0; 9010 9011 switch (fan_status_access_mode) { 9012 case TPACPI_FAN_RD_ACPI_GFAN: 9013 /* 570, 600e/x, 770e, 770x */ 9014 rc = fan_get_status_safe(&status); 9015 if (rc < 0) 9016 return rc; 9017 9018 seq_printf(m, "status:\t\t%s\n" 9019 "level:\t\t%d\n", 9020 (status != 0) ? "enabled" : "disabled", status); 9021 break; 9022 9023 case TPACPI_FAN_RD_TPEC: 9024 /* all except 570, 600e/x, 770e, 770x */ 9025 rc = fan_get_status_safe(&status); 9026 if (rc < 0) 9027 return rc; 9028 9029 seq_printf(m, "status:\t\t%s\n", 9030 (status != 0) ? "enabled" : "disabled"); 9031 9032 rc = fan_get_speed(&speed); 9033 if (rc < 0) 9034 return rc; 9035 9036 seq_printf(m, "speed:\t\t%d\n", speed); 9037 9038 if (status & TP_EC_FAN_FULLSPEED) 9039 /* Disengaged mode takes precedence */ 9040 seq_printf(m, "level:\t\tdisengaged\n"); 9041 else if (status & TP_EC_FAN_AUTO) 9042 seq_printf(m, "level:\t\tauto\n"); 9043 else 9044 seq_printf(m, "level:\t\t%d\n", status); 9045 break; 9046 9047 case TPACPI_FAN_NONE: 9048 default: 9049 seq_printf(m, "status:\t\tnot supported\n"); 9050 } 9051 9052 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9053 seq_printf(m, "commands:\tlevel <level>"); 9054 9055 switch (fan_control_access_mode) { 9056 case TPACPI_FAN_WR_ACPI_SFAN: 9057 seq_printf(m, " (<level> is 0-7)\n"); 9058 break; 9059 9060 default: 9061 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9062 break; 9063 } 9064 } 9065 9066 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9067 seq_printf(m, "commands:\tenable, disable\n" 9068 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9069 9070 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9071 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9072 9073 return 0; 9074 } 9075 9076 static int fan_write_cmd_level(const char *cmd, int *rc) 9077 { 9078 int level; 9079 9080 if (strlencmp(cmd, "level auto") == 0) 9081 level = TP_EC_FAN_AUTO; 9082 else if ((strlencmp(cmd, "level disengaged") == 0) | 9083 (strlencmp(cmd, "level full-speed") == 0)) 9084 level = TP_EC_FAN_FULLSPEED; 9085 else if (sscanf(cmd, "level %d", &level) != 1) 9086 return 0; 9087 9088 *rc = fan_set_level_safe(level); 9089 if (*rc == -ENXIO) 9090 pr_err("level command accepted for unsupported access mode %d\n", 9091 fan_control_access_mode); 9092 else if (!*rc) 9093 tpacpi_disclose_usertask("procfs fan", 9094 "set level to %d\n", level); 9095 9096 return 1; 9097 } 9098 9099 static int fan_write_cmd_enable(const char *cmd, int *rc) 9100 { 9101 if (strlencmp(cmd, "enable") != 0) 9102 return 0; 9103 9104 *rc = fan_set_enable(); 9105 if (*rc == -ENXIO) 9106 pr_err("enable command accepted for unsupported access mode %d\n", 9107 fan_control_access_mode); 9108 else if (!*rc) 9109 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9110 9111 return 1; 9112 } 9113 9114 static int fan_write_cmd_disable(const char *cmd, int *rc) 9115 { 9116 if (strlencmp(cmd, "disable") != 0) 9117 return 0; 9118 9119 *rc = fan_set_disable(); 9120 if (*rc == -ENXIO) 9121 pr_err("disable command accepted for unsupported access mode %d\n", 9122 fan_control_access_mode); 9123 else if (!*rc) 9124 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9125 9126 return 1; 9127 } 9128 9129 static int fan_write_cmd_speed(const char *cmd, int *rc) 9130 { 9131 int speed; 9132 9133 /* TODO: 9134 * Support speed <low> <medium> <high> ? */ 9135 9136 if (sscanf(cmd, "speed %d", &speed) != 1) 9137 return 0; 9138 9139 *rc = fan_set_speed(speed); 9140 if (*rc == -ENXIO) 9141 pr_err("speed command accepted for unsupported access mode %d\n", 9142 fan_control_access_mode); 9143 else if (!*rc) 9144 tpacpi_disclose_usertask("procfs fan", 9145 "set speed to %d\n", speed); 9146 9147 return 1; 9148 } 9149 9150 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9151 { 9152 int interval; 9153 9154 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9155 return 0; 9156 9157 if (interval < 0 || interval > 120) 9158 *rc = -EINVAL; 9159 else { 9160 fan_watchdog_maxinterval = interval; 9161 tpacpi_disclose_usertask("procfs fan", 9162 "set watchdog timer to %d\n", 9163 interval); 9164 } 9165 9166 return 1; 9167 } 9168 9169 static int fan_write(char *buf) 9170 { 9171 char *cmd; 9172 int rc = 0; 9173 9174 while (!rc && (cmd = strsep(&buf, ","))) { 9175 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9176 fan_write_cmd_level(cmd, &rc)) && 9177 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9178 (fan_write_cmd_enable(cmd, &rc) || 9179 fan_write_cmd_disable(cmd, &rc) || 9180 fan_write_cmd_watchdog(cmd, &rc))) && 9181 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9182 fan_write_cmd_speed(cmd, &rc)) 9183 ) 9184 rc = -EINVAL; 9185 else if (!rc) 9186 fan_watchdog_reset(); 9187 } 9188 9189 return rc; 9190 } 9191 9192 static struct ibm_struct fan_driver_data = { 9193 .name = "fan", 9194 .read = fan_read, 9195 .write = fan_write, 9196 .exit = fan_exit, 9197 .suspend = fan_suspend, 9198 .resume = fan_resume, 9199 }; 9200 9201 /************************************************************************* 9202 * Mute LED subdriver 9203 */ 9204 9205 #define TPACPI_LED_MAX 2 9206 9207 struct tp_led_table { 9208 acpi_string name; 9209 int on_value; 9210 int off_value; 9211 int state; 9212 }; 9213 9214 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9215 [LED_AUDIO_MUTE] = { 9216 .name = "SSMS", 9217 .on_value = 1, 9218 .off_value = 0, 9219 }, 9220 [LED_AUDIO_MICMUTE] = { 9221 .name = "MMTS", 9222 .on_value = 2, 9223 .off_value = 0, 9224 }, 9225 }; 9226 9227 static int mute_led_on_off(struct tp_led_table *t, bool state) 9228 { 9229 acpi_handle temp; 9230 int output; 9231 9232 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9233 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9234 return -EIO; 9235 } 9236 9237 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9238 state ? t->on_value : t->off_value)) 9239 return -EIO; 9240 9241 t->state = state; 9242 return state; 9243 } 9244 9245 static int tpacpi_led_set(int whichled, bool on) 9246 { 9247 struct tp_led_table *t; 9248 9249 t = &led_tables[whichled]; 9250 if (t->state < 0 || t->state == on) 9251 return t->state; 9252 return mute_led_on_off(t, on); 9253 } 9254 9255 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9256 enum led_brightness brightness) 9257 { 9258 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9259 } 9260 9261 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9262 enum led_brightness brightness) 9263 { 9264 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9265 } 9266 9267 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9268 [LED_AUDIO_MUTE] = { 9269 .name = "platform::mute", 9270 .max_brightness = 1, 9271 .brightness_set_blocking = tpacpi_led_mute_set, 9272 .default_trigger = "audio-mute", 9273 }, 9274 [LED_AUDIO_MICMUTE] = { 9275 .name = "platform::micmute", 9276 .max_brightness = 1, 9277 .brightness_set_blocking = tpacpi_led_micmute_set, 9278 .default_trigger = "audio-micmute", 9279 }, 9280 }; 9281 9282 static int mute_led_init(struct ibm_init_struct *iibm) 9283 { 9284 acpi_handle temp; 9285 int i, err; 9286 9287 for (i = 0; i < TPACPI_LED_MAX; i++) { 9288 struct tp_led_table *t = &led_tables[i]; 9289 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9290 t->state = -ENODEV; 9291 continue; 9292 } 9293 9294 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9295 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9296 if (err < 0) { 9297 while (i--) 9298 led_classdev_unregister(&mute_led_cdev[i]); 9299 return err; 9300 } 9301 } 9302 return 0; 9303 } 9304 9305 static void mute_led_exit(void) 9306 { 9307 int i; 9308 9309 for (i = 0; i < TPACPI_LED_MAX; i++) { 9310 led_classdev_unregister(&mute_led_cdev[i]); 9311 tpacpi_led_set(i, false); 9312 } 9313 } 9314 9315 static void mute_led_resume(void) 9316 { 9317 int i; 9318 9319 for (i = 0; i < TPACPI_LED_MAX; i++) { 9320 struct tp_led_table *t = &led_tables[i]; 9321 if (t->state >= 0) 9322 mute_led_on_off(t, t->state); 9323 } 9324 } 9325 9326 static struct ibm_struct mute_led_driver_data = { 9327 .name = "mute_led", 9328 .exit = mute_led_exit, 9329 .resume = mute_led_resume, 9330 }; 9331 9332 /* 9333 * Battery Wear Control Driver 9334 * Contact: Ognjen Galic <smclt30p@gmail.com> 9335 */ 9336 9337 /* Metadata */ 9338 9339 #define GET_START "BCTG" 9340 #define SET_START "BCCS" 9341 #define GET_STOP "BCSG" 9342 #define SET_STOP "BCSS" 9343 9344 enum { 9345 BAT_ANY = 0, 9346 BAT_PRIMARY = 1, 9347 BAT_SECONDARY = 2 9348 }; 9349 9350 enum { 9351 /* Error condition bit */ 9352 METHOD_ERR = BIT(31), 9353 }; 9354 9355 enum { 9356 /* This is used in the get/set helpers */ 9357 THRESHOLD_START, 9358 THRESHOLD_STOP, 9359 }; 9360 9361 struct tpacpi_battery_data { 9362 int charge_start; 9363 int start_support; 9364 int charge_stop; 9365 int stop_support; 9366 }; 9367 9368 struct tpacpi_battery_driver_data { 9369 struct tpacpi_battery_data batteries[3]; 9370 int individual_addressing; 9371 }; 9372 9373 static struct tpacpi_battery_driver_data battery_info; 9374 9375 /* ACPI helpers/functions/probes */ 9376 9377 /** 9378 * This evaluates a ACPI method call specific to the battery 9379 * ACPI extension. The specifics are that an error is marked 9380 * in the 32rd bit of the response, so we just check that here. 9381 */ 9382 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9383 { 9384 int response; 9385 9386 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9387 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9388 return AE_ERROR; 9389 } 9390 if (response & METHOD_ERR) { 9391 acpi_handle_err(hkey_handle, 9392 "%s evaluated but flagged as error", method); 9393 return AE_ERROR; 9394 } 9395 *ret = response; 9396 return AE_OK; 9397 } 9398 9399 static int tpacpi_battery_get(int what, int battery, int *ret) 9400 { 9401 switch (what) { 9402 case THRESHOLD_START: 9403 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9404 return -ENODEV; 9405 9406 /* The value is in the low 8 bits of the response */ 9407 *ret = *ret & 0xFF; 9408 return 0; 9409 case THRESHOLD_STOP: 9410 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9411 return -ENODEV; 9412 /* Value is in lower 8 bits */ 9413 *ret = *ret & 0xFF; 9414 /* 9415 * On the stop value, if we return 0 that 9416 * does not make any sense. 0 means Default, which 9417 * means that charging stops at 100%, so we return 9418 * that. 9419 */ 9420 if (*ret == 0) 9421 *ret = 100; 9422 return 0; 9423 default: 9424 pr_crit("wrong parameter: %d", what); 9425 return -EINVAL; 9426 } 9427 } 9428 9429 static int tpacpi_battery_set(int what, int battery, int value) 9430 { 9431 int param, ret; 9432 /* The first 8 bits are the value of the threshold */ 9433 param = value; 9434 /* The battery ID is in bits 8-9, 2 bits */ 9435 param |= battery << 8; 9436 9437 switch (what) { 9438 case THRESHOLD_START: 9439 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9440 pr_err("failed to set charge threshold on battery %d", 9441 battery); 9442 return -ENODEV; 9443 } 9444 return 0; 9445 case THRESHOLD_STOP: 9446 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9447 pr_err("failed to set stop threshold: %d", battery); 9448 return -ENODEV; 9449 } 9450 return 0; 9451 default: 9452 pr_crit("wrong parameter: %d", what); 9453 return -EINVAL; 9454 } 9455 } 9456 9457 static int tpacpi_battery_probe(int battery) 9458 { 9459 int ret = 0; 9460 9461 memset(&battery_info.batteries[battery], 0, 9462 sizeof(battery_info.batteries[battery])); 9463 9464 /* 9465 * 1) Get the current start threshold 9466 * 2) Check for support 9467 * 3) Get the current stop threshold 9468 * 4) Check for support 9469 */ 9470 if (acpi_has_method(hkey_handle, GET_START)) { 9471 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9472 pr_err("Error probing battery %d\n", battery); 9473 return -ENODEV; 9474 } 9475 /* Individual addressing is in bit 9 */ 9476 if (ret & BIT(9)) 9477 battery_info.individual_addressing = true; 9478 /* Support is marked in bit 8 */ 9479 if (ret & BIT(8)) 9480 battery_info.batteries[battery].start_support = 1; 9481 else 9482 return -ENODEV; 9483 if (tpacpi_battery_get(THRESHOLD_START, battery, 9484 &battery_info.batteries[battery].charge_start)) { 9485 pr_err("Error probing battery %d\n", battery); 9486 return -ENODEV; 9487 } 9488 } 9489 if (acpi_has_method(hkey_handle, GET_STOP)) { 9490 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9491 pr_err("Error probing battery stop; %d\n", battery); 9492 return -ENODEV; 9493 } 9494 /* Support is marked in bit 8 */ 9495 if (ret & BIT(8)) 9496 battery_info.batteries[battery].stop_support = 1; 9497 else 9498 return -ENODEV; 9499 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9500 &battery_info.batteries[battery].charge_stop)) { 9501 pr_err("Error probing battery stop: %d\n", battery); 9502 return -ENODEV; 9503 } 9504 } 9505 pr_info("battery %d registered (start %d, stop %d)", 9506 battery, 9507 battery_info.batteries[battery].charge_start, 9508 battery_info.batteries[battery].charge_stop); 9509 9510 return 0; 9511 } 9512 9513 /* General helper functions */ 9514 9515 static int tpacpi_battery_get_id(const char *battery_name) 9516 { 9517 9518 if (strcmp(battery_name, "BAT0") == 0 || 9519 tp_features.battery_force_primary) 9520 return BAT_PRIMARY; 9521 if (strcmp(battery_name, "BAT1") == 0) 9522 return BAT_SECONDARY; 9523 /* 9524 * If for some reason the battery is not BAT0 nor is it 9525 * BAT1, we will assume it's the default, first battery, 9526 * AKA primary. 9527 */ 9528 pr_warn("unknown battery %s, assuming primary", battery_name); 9529 return BAT_PRIMARY; 9530 } 9531 9532 /* sysfs interface */ 9533 9534 static ssize_t tpacpi_battery_store(int what, 9535 struct device *dev, 9536 const char *buf, size_t count) 9537 { 9538 struct power_supply *supply = to_power_supply(dev); 9539 unsigned long value; 9540 int battery, rval; 9541 /* 9542 * Some systems have support for more than 9543 * one battery. If that is the case, 9544 * tpacpi_battery_probe marked that addressing 9545 * them individually is supported, so we do that 9546 * based on the device struct. 9547 * 9548 * On systems that are not supported, we assume 9549 * the primary as most of the ACPI calls fail 9550 * with "Any Battery" as the parameter. 9551 */ 9552 if (battery_info.individual_addressing) 9553 /* BAT_PRIMARY or BAT_SECONDARY */ 9554 battery = tpacpi_battery_get_id(supply->desc->name); 9555 else 9556 battery = BAT_PRIMARY; 9557 9558 rval = kstrtoul(buf, 10, &value); 9559 if (rval) 9560 return rval; 9561 9562 switch (what) { 9563 case THRESHOLD_START: 9564 if (!battery_info.batteries[battery].start_support) 9565 return -ENODEV; 9566 /* valid values are [0, 99] */ 9567 if (value > 99) 9568 return -EINVAL; 9569 if (value > battery_info.batteries[battery].charge_stop) 9570 return -EINVAL; 9571 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9572 return -ENODEV; 9573 battery_info.batteries[battery].charge_start = value; 9574 return count; 9575 9576 case THRESHOLD_STOP: 9577 if (!battery_info.batteries[battery].stop_support) 9578 return -ENODEV; 9579 /* valid values are [1, 100] */ 9580 if (value < 1 || value > 100) 9581 return -EINVAL; 9582 if (value < battery_info.batteries[battery].charge_start) 9583 return -EINVAL; 9584 battery_info.batteries[battery].charge_stop = value; 9585 /* 9586 * When 100 is passed to stop, we need to flip 9587 * it to 0 as that the EC understands that as 9588 * "Default", which will charge to 100% 9589 */ 9590 if (value == 100) 9591 value = 0; 9592 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9593 return -EINVAL; 9594 return count; 9595 default: 9596 pr_crit("Wrong parameter: %d", what); 9597 return -EINVAL; 9598 } 9599 return count; 9600 } 9601 9602 static ssize_t tpacpi_battery_show(int what, 9603 struct device *dev, 9604 char *buf) 9605 { 9606 struct power_supply *supply = to_power_supply(dev); 9607 int ret, battery; 9608 /* 9609 * Some systems have support for more than 9610 * one battery. If that is the case, 9611 * tpacpi_battery_probe marked that addressing 9612 * them individually is supported, so we; 9613 * based on the device struct. 9614 * 9615 * On systems that are not supported, we assume 9616 * the primary as most of the ACPI calls fail 9617 * with "Any Battery" as the parameter. 9618 */ 9619 if (battery_info.individual_addressing) 9620 /* BAT_PRIMARY or BAT_SECONDARY */ 9621 battery = tpacpi_battery_get_id(supply->desc->name); 9622 else 9623 battery = BAT_PRIMARY; 9624 if (tpacpi_battery_get(what, battery, &ret)) 9625 return -ENODEV; 9626 return sprintf(buf, "%d\n", ret); 9627 } 9628 9629 static ssize_t charge_control_start_threshold_show(struct device *device, 9630 struct device_attribute *attr, 9631 char *buf) 9632 { 9633 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9634 } 9635 9636 static ssize_t charge_control_end_threshold_show(struct device *device, 9637 struct device_attribute *attr, 9638 char *buf) 9639 { 9640 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9641 } 9642 9643 static ssize_t charge_control_start_threshold_store(struct device *dev, 9644 struct device_attribute *attr, 9645 const char *buf, size_t count) 9646 { 9647 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9648 } 9649 9650 static ssize_t charge_control_end_threshold_store(struct device *dev, 9651 struct device_attribute *attr, 9652 const char *buf, size_t count) 9653 { 9654 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9655 } 9656 9657 static DEVICE_ATTR_RW(charge_control_start_threshold); 9658 static DEVICE_ATTR_RW(charge_control_end_threshold); 9659 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9660 charge_start_threshold, 9661 0644, 9662 charge_control_start_threshold_show, 9663 charge_control_start_threshold_store 9664 ); 9665 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9666 charge_stop_threshold, 9667 0644, 9668 charge_control_end_threshold_show, 9669 charge_control_end_threshold_store 9670 ); 9671 9672 static struct attribute *tpacpi_battery_attrs[] = { 9673 &dev_attr_charge_control_start_threshold.attr, 9674 &dev_attr_charge_control_end_threshold.attr, 9675 &dev_attr_charge_start_threshold.attr, 9676 &dev_attr_charge_stop_threshold.attr, 9677 NULL, 9678 }; 9679 9680 ATTRIBUTE_GROUPS(tpacpi_battery); 9681 9682 /* ACPI battery hooking */ 9683 9684 static int tpacpi_battery_add(struct power_supply *battery) 9685 { 9686 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9687 9688 if (tpacpi_battery_probe(batteryid)) 9689 return -ENODEV; 9690 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9691 return -ENODEV; 9692 return 0; 9693 } 9694 9695 static int tpacpi_battery_remove(struct power_supply *battery) 9696 { 9697 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9698 return 0; 9699 } 9700 9701 static struct acpi_battery_hook battery_hook = { 9702 .add_battery = tpacpi_battery_add, 9703 .remove_battery = tpacpi_battery_remove, 9704 .name = "ThinkPad Battery Extension", 9705 }; 9706 9707 /* Subdriver init/exit */ 9708 9709 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9710 /* 9711 * Individual addressing is broken on models that expose the 9712 * primary battery as BAT1. 9713 */ 9714 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9715 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9716 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9717 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9718 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9719 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9720 }; 9721 9722 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9723 { 9724 memset(&battery_info, 0, sizeof(battery_info)); 9725 9726 tp_features.battery_force_primary = tpacpi_check_quirks( 9727 battery_quirk_table, 9728 ARRAY_SIZE(battery_quirk_table)); 9729 9730 battery_hook_register(&battery_hook); 9731 return 0; 9732 } 9733 9734 static void tpacpi_battery_exit(void) 9735 { 9736 battery_hook_unregister(&battery_hook); 9737 } 9738 9739 static struct ibm_struct battery_driver_data = { 9740 .name = "battery", 9741 .exit = tpacpi_battery_exit, 9742 }; 9743 9744 /************************************************************************* 9745 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9746 */ 9747 9748 static int lcdshadow_state; 9749 9750 static int lcdshadow_on_off(bool state) 9751 { 9752 acpi_handle set_shadow_handle; 9753 int output; 9754 9755 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9756 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9757 return -EIO; 9758 } 9759 9760 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9761 return -EIO; 9762 9763 lcdshadow_state = state; 9764 return 0; 9765 } 9766 9767 static int lcdshadow_set(bool on) 9768 { 9769 if (lcdshadow_state < 0) 9770 return lcdshadow_state; 9771 if (lcdshadow_state == on) 9772 return 0; 9773 return lcdshadow_on_off(on); 9774 } 9775 9776 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9777 { 9778 acpi_handle get_shadow_handle; 9779 int output; 9780 9781 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9782 lcdshadow_state = -ENODEV; 9783 return 0; 9784 } 9785 9786 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9787 lcdshadow_state = -EIO; 9788 return -EIO; 9789 } 9790 if (!(output & 0x10000)) { 9791 lcdshadow_state = -ENODEV; 9792 return 0; 9793 } 9794 lcdshadow_state = output & 0x1; 9795 9796 return 0; 9797 } 9798 9799 static void lcdshadow_resume(void) 9800 { 9801 if (lcdshadow_state >= 0) 9802 lcdshadow_on_off(lcdshadow_state); 9803 } 9804 9805 static int lcdshadow_read(struct seq_file *m) 9806 { 9807 if (lcdshadow_state < 0) { 9808 seq_puts(m, "status:\t\tnot supported\n"); 9809 } else { 9810 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9811 seq_puts(m, "commands:\t0, 1\n"); 9812 } 9813 9814 return 0; 9815 } 9816 9817 static int lcdshadow_write(char *buf) 9818 { 9819 char *cmd; 9820 int res, state = -EINVAL; 9821 9822 if (lcdshadow_state < 0) 9823 return -ENODEV; 9824 9825 while ((cmd = strsep(&buf, ","))) { 9826 res = kstrtoint(cmd, 10, &state); 9827 if (res < 0) 9828 return res; 9829 } 9830 9831 if (state >= 2 || state < 0) 9832 return -EINVAL; 9833 9834 return lcdshadow_set(state); 9835 } 9836 9837 static struct ibm_struct lcdshadow_driver_data = { 9838 .name = "lcdshadow", 9839 .resume = lcdshadow_resume, 9840 .read = lcdshadow_read, 9841 .write = lcdshadow_write, 9842 }; 9843 9844 /************************************************************************* 9845 * Thinkpad sensor interfaces 9846 */ 9847 9848 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9849 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9850 9851 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 9852 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 9853 9854 static bool has_palmsensor; 9855 static bool has_lapsensor; 9856 static bool palm_state; 9857 static bool lap_state; 9858 9859 static int dytc_command(int command, int *output) 9860 { 9861 acpi_handle dytc_handle; 9862 9863 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9864 /* Platform doesn't support DYTC */ 9865 return -ENODEV; 9866 } 9867 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9868 return -EIO; 9869 return 0; 9870 } 9871 9872 static int lapsensor_get(bool *present, bool *state) 9873 { 9874 int output, err; 9875 9876 *present = false; 9877 err = dytc_command(DYTC_CMD_GET, &output); 9878 if (err) 9879 return err; 9880 9881 *present = true; /*If we get his far, we have lapmode support*/ 9882 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9883 return 0; 9884 } 9885 9886 static int palmsensor_get(bool *present, bool *state) 9887 { 9888 acpi_handle psensor_handle; 9889 int output; 9890 9891 *present = false; 9892 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 9893 return -ENODEV; 9894 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 9895 return -EIO; 9896 9897 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 9898 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 9899 return 0; 9900 } 9901 9902 static void lapsensor_refresh(void) 9903 { 9904 bool state; 9905 int err; 9906 9907 if (has_lapsensor) { 9908 err = lapsensor_get(&has_lapsensor, &state); 9909 if (err) 9910 return; 9911 if (lap_state != state) { 9912 lap_state = state; 9913 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9914 } 9915 } 9916 } 9917 9918 static void palmsensor_refresh(void) 9919 { 9920 bool state; 9921 int err; 9922 9923 if (has_palmsensor) { 9924 err = palmsensor_get(&has_palmsensor, &state); 9925 if (err) 9926 return; 9927 if (palm_state != state) { 9928 palm_state = state; 9929 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 9930 } 9931 } 9932 } 9933 9934 static ssize_t dytc_lapmode_show(struct device *dev, 9935 struct device_attribute *attr, 9936 char *buf) 9937 { 9938 if (has_lapsensor) 9939 return sysfs_emit(buf, "%d\n", lap_state); 9940 return sysfs_emit(buf, "\n"); 9941 } 9942 static DEVICE_ATTR_RO(dytc_lapmode); 9943 9944 static ssize_t palmsensor_show(struct device *dev, 9945 struct device_attribute *attr, 9946 char *buf) 9947 { 9948 if (has_palmsensor) 9949 return sysfs_emit(buf, "%d\n", palm_state); 9950 return sysfs_emit(buf, "\n"); 9951 } 9952 static DEVICE_ATTR_RO(palmsensor); 9953 9954 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 9955 { 9956 int palm_err, lap_err, err; 9957 9958 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 9959 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 9960 /* 9961 * If support isn't available (ENODEV) for both devices then quit, but 9962 * don't return an error. 9963 */ 9964 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 9965 return 0; 9966 /* Otherwise, if there was an error return it */ 9967 if (palm_err && (palm_err != -ENODEV)) 9968 return palm_err; 9969 if (lap_err && (lap_err != -ENODEV)) 9970 return lap_err; 9971 9972 if (has_palmsensor) { 9973 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 9974 if (err) 9975 return err; 9976 } 9977 if (has_lapsensor) { 9978 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 9979 if (err) 9980 return err; 9981 } 9982 return 0; 9983 } 9984 9985 static void proxsensor_exit(void) 9986 { 9987 if (has_lapsensor) 9988 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 9989 if (has_palmsensor) 9990 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 9991 } 9992 9993 static struct ibm_struct proxsensor_driver_data = { 9994 .name = "proximity-sensor", 9995 .exit = proxsensor_exit, 9996 }; 9997 9998 /************************************************************************* 9999 * DYTC Platform Profile interface 10000 */ 10001 10002 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10003 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10004 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10005 10006 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10007 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10008 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10009 10010 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10011 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10012 10013 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10014 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10015 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10016 10017 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10018 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10019 #define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */ 10020 10021 #define DYTC_MODE_PERFORM 2 /* High power mode aka performance */ 10022 #define DYTC_MODE_LOWPOWER 3 /* Low power mode */ 10023 #define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */ 10024 10025 #define DYTC_SET_COMMAND(function, mode, on) \ 10026 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10027 (mode) << DYTC_SET_MODE_BIT | \ 10028 (on) << DYTC_SET_VALID_BIT) 10029 10030 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0) 10031 10032 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1) 10033 10034 static bool dytc_profile_available; 10035 static enum platform_profile_option dytc_current_profile; 10036 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10037 static DEFINE_MUTEX(dytc_mutex); 10038 10039 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10040 { 10041 switch (dytcmode) { 10042 case DYTC_MODE_LOWPOWER: 10043 *profile = PLATFORM_PROFILE_LOW_POWER; 10044 break; 10045 case DYTC_MODE_BALANCE: 10046 *profile = PLATFORM_PROFILE_BALANCED; 10047 break; 10048 case DYTC_MODE_PERFORM: 10049 *profile = PLATFORM_PROFILE_PERFORMANCE; 10050 break; 10051 default: /* Unknown mode */ 10052 return -EINVAL; 10053 } 10054 return 0; 10055 } 10056 10057 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10058 { 10059 switch (profile) { 10060 case PLATFORM_PROFILE_LOW_POWER: 10061 *perfmode = DYTC_MODE_LOWPOWER; 10062 break; 10063 case PLATFORM_PROFILE_BALANCED: 10064 *perfmode = DYTC_MODE_BALANCE; 10065 break; 10066 case PLATFORM_PROFILE_PERFORMANCE: 10067 *perfmode = DYTC_MODE_PERFORM; 10068 break; 10069 default: /* Unknown profile */ 10070 return -EOPNOTSUPP; 10071 } 10072 return 0; 10073 } 10074 10075 /* 10076 * dytc_profile_get: Function to register with platform_profile 10077 * handler. Returns current platform profile. 10078 */ 10079 static int dytc_profile_get(struct platform_profile_handler *pprof, 10080 enum platform_profile_option *profile) 10081 { 10082 *profile = dytc_current_profile; 10083 return 0; 10084 } 10085 10086 /* 10087 * Helper function - check if we are in CQL mode and if we are 10088 * - disable CQL, 10089 * - run the command 10090 * - enable CQL 10091 * If not in CQL mode, just run the command 10092 */ 10093 static int dytc_cql_command(int command, int *output) 10094 { 10095 int err, cmd_err, dummy; 10096 int cur_funcmode; 10097 10098 /* Determine if we are in CQL mode. This alters the commands we do */ 10099 err = dytc_command(DYTC_CMD_GET, output); 10100 if (err) 10101 return err; 10102 10103 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10104 /* Check if we're OK to return immediately */ 10105 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10106 return 0; 10107 10108 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10109 atomic_inc(&dytc_ignore_event); 10110 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10111 if (err) 10112 return err; 10113 } 10114 10115 cmd_err = dytc_command(command, output); 10116 /* Check return condition after we've restored CQL state */ 10117 10118 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10119 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10120 if (err) 10121 return err; 10122 } 10123 10124 return cmd_err; 10125 } 10126 10127 /* 10128 * dytc_profile_set: Function to register with platform_profile 10129 * handler. Sets current platform profile. 10130 */ 10131 static int dytc_profile_set(struct platform_profile_handler *pprof, 10132 enum platform_profile_option profile) 10133 { 10134 int output; 10135 int err; 10136 10137 if (!dytc_profile_available) 10138 return -ENODEV; 10139 10140 err = mutex_lock_interruptible(&dytc_mutex); 10141 if (err) 10142 return err; 10143 10144 if (profile == PLATFORM_PROFILE_BALANCED) { 10145 /* To get back to balanced mode we just issue a reset command */ 10146 err = dytc_command(DYTC_CMD_RESET, &output); 10147 if (err) 10148 goto unlock; 10149 } else { 10150 int perfmode; 10151 10152 err = convert_profile_to_dytc(profile, &perfmode); 10153 if (err) 10154 goto unlock; 10155 10156 /* Determine if we are in CQL mode. This alters the commands we do */ 10157 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), &output); 10158 if (err) 10159 goto unlock; 10160 } 10161 /* Success - update current profile */ 10162 dytc_current_profile = profile; 10163 unlock: 10164 mutex_unlock(&dytc_mutex); 10165 return err; 10166 } 10167 10168 static void dytc_profile_refresh(void) 10169 { 10170 enum platform_profile_option profile; 10171 int output, err; 10172 int perfmode; 10173 10174 mutex_lock(&dytc_mutex); 10175 err = dytc_cql_command(DYTC_CMD_GET, &output); 10176 mutex_unlock(&dytc_mutex); 10177 if (err) 10178 return; 10179 10180 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10181 convert_dytc_to_profile(perfmode, &profile); 10182 if (profile != dytc_current_profile) { 10183 dytc_current_profile = profile; 10184 platform_profile_notify(); 10185 } 10186 } 10187 10188 static struct platform_profile_handler dytc_profile = { 10189 .profile_get = dytc_profile_get, 10190 .profile_set = dytc_profile_set, 10191 }; 10192 10193 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10194 { 10195 int err, output; 10196 10197 /* Setup supported modes */ 10198 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10199 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10200 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10201 10202 dytc_profile_available = false; 10203 err = dytc_command(DYTC_CMD_QUERY, &output); 10204 /* 10205 * If support isn't available (ENODEV) then don't return an error 10206 * and don't create the sysfs group 10207 */ 10208 if (err == -ENODEV) 10209 return 0; 10210 /* For all other errors we can flag the failure */ 10211 if (err) 10212 return err; 10213 10214 /* Check DYTC is enabled and supports mode setting */ 10215 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) { 10216 /* Only DYTC v5.0 and later has this feature. */ 10217 int dytc_version; 10218 10219 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10220 if (dytc_version >= 5) { 10221 dbg_printk(TPACPI_DBG_INIT, 10222 "DYTC version %d: thermal mode available\n", dytc_version); 10223 /* Create platform_profile structure and register */ 10224 err = platform_profile_register(&dytc_profile); 10225 /* 10226 * If for some reason platform_profiles aren't enabled 10227 * don't quit terminally. 10228 */ 10229 if (err) 10230 return 0; 10231 10232 dytc_profile_available = true; 10233 /* Ensure initial values are correct */ 10234 dytc_profile_refresh(); 10235 } 10236 } 10237 return 0; 10238 } 10239 10240 static void dytc_profile_exit(void) 10241 { 10242 if (dytc_profile_available) { 10243 dytc_profile_available = false; 10244 platform_profile_remove(); 10245 } 10246 } 10247 10248 static struct ibm_struct dytc_profile_driver_data = { 10249 .name = "dytc-profile", 10250 .exit = dytc_profile_exit, 10251 }; 10252 10253 /************************************************************************* 10254 * Keyboard language interface 10255 */ 10256 10257 struct keyboard_lang_data { 10258 const char *lang_str; 10259 int lang_code; 10260 }; 10261 10262 static const struct keyboard_lang_data keyboard_lang_data[] = { 10263 {"be", 0x080c}, 10264 {"cz", 0x0405}, 10265 {"da", 0x0406}, 10266 {"de", 0x0c07}, 10267 {"en", 0x0000}, 10268 {"es", 0x2c0a}, 10269 {"et", 0x0425}, 10270 {"fr", 0x040c}, 10271 {"fr-ch", 0x100c}, 10272 {"hu", 0x040e}, 10273 {"it", 0x0410}, 10274 {"jp", 0x0411}, 10275 {"nl", 0x0413}, 10276 {"nn", 0x0414}, 10277 {"pl", 0x0415}, 10278 {"pt", 0x0816}, 10279 {"sl", 0x041b}, 10280 {"sv", 0x081d}, 10281 {"tr", 0x041f}, 10282 }; 10283 10284 static int set_keyboard_lang_command(int command) 10285 { 10286 acpi_handle sskl_handle; 10287 int output; 10288 10289 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10290 /* Platform doesn't support SSKL */ 10291 return -ENODEV; 10292 } 10293 10294 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10295 return -EIO; 10296 10297 return 0; 10298 } 10299 10300 static int get_keyboard_lang(int *output) 10301 { 10302 acpi_handle gskl_handle; 10303 int kbd_lang; 10304 10305 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10306 /* Platform doesn't support GSKL */ 10307 return -ENODEV; 10308 } 10309 10310 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10311 return -EIO; 10312 10313 /* 10314 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10315 * '(' and ')') keys which use layout dependent key-press emulation. 10316 */ 10317 if (kbd_lang & METHOD_ERR) 10318 return -ENODEV; 10319 10320 *output = kbd_lang; 10321 10322 return 0; 10323 } 10324 10325 /* sysfs keyboard language entry */ 10326 static ssize_t keyboard_lang_show(struct device *dev, 10327 struct device_attribute *attr, 10328 char *buf) 10329 { 10330 int output, err, i, len = 0; 10331 10332 err = get_keyboard_lang(&output); 10333 if (err) 10334 return err; 10335 10336 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10337 if (i) 10338 len += sysfs_emit_at(buf, len, "%s", " "); 10339 10340 if (output == keyboard_lang_data[i].lang_code) { 10341 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10342 } else { 10343 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10344 } 10345 } 10346 len += sysfs_emit_at(buf, len, "\n"); 10347 10348 return len; 10349 } 10350 10351 static ssize_t keyboard_lang_store(struct device *dev, 10352 struct device_attribute *attr, 10353 const char *buf, size_t count) 10354 { 10355 int err, i; 10356 bool lang_found = false; 10357 int lang_code = 0; 10358 10359 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10360 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10361 lang_code = keyboard_lang_data[i].lang_code; 10362 lang_found = true; 10363 break; 10364 } 10365 } 10366 10367 if (lang_found) { 10368 lang_code = lang_code | 1 << 24; 10369 10370 /* Set language code */ 10371 err = set_keyboard_lang_command(lang_code); 10372 if (err) 10373 return err; 10374 } else { 10375 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10376 return -EINVAL; 10377 } 10378 10379 tpacpi_disclose_usertask(attr->attr.name, 10380 "keyboard language is set to %s\n", buf); 10381 10382 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10383 10384 return count; 10385 } 10386 static DEVICE_ATTR_RW(keyboard_lang); 10387 10388 static struct attribute *kbdlang_attributes[] = { 10389 &dev_attr_keyboard_lang.attr, 10390 NULL 10391 }; 10392 10393 static const struct attribute_group kbdlang_attr_group = { 10394 .attrs = kbdlang_attributes, 10395 }; 10396 10397 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10398 { 10399 int err, output; 10400 10401 err = get_keyboard_lang(&output); 10402 /* 10403 * If support isn't available (ENODEV) then don't return an error 10404 * just don't create the sysfs group. 10405 */ 10406 if (err == -ENODEV) 10407 return 0; 10408 10409 if (err) 10410 return err; 10411 10412 /* Platform supports this feature - create the sysfs file */ 10413 return sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10414 } 10415 10416 static void kbdlang_exit(void) 10417 { 10418 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10419 } 10420 10421 static struct ibm_struct kbdlang_driver_data = { 10422 .name = "kbdlang", 10423 .exit = kbdlang_exit, 10424 }; 10425 10426 /**************************************************************************** 10427 **************************************************************************** 10428 * 10429 * Infrastructure 10430 * 10431 **************************************************************************** 10432 ****************************************************************************/ 10433 10434 /* 10435 * HKEY event callout for other subdrivers go here 10436 * (yes, it is ugly, but it is quick, safe, and gets the job done 10437 */ 10438 static void tpacpi_driver_event(const unsigned int hkey_event) 10439 { 10440 if (ibm_backlight_device) { 10441 switch (hkey_event) { 10442 case TP_HKEY_EV_BRGHT_UP: 10443 case TP_HKEY_EV_BRGHT_DOWN: 10444 tpacpi_brightness_notify_change(); 10445 } 10446 } 10447 if (alsa_card) { 10448 switch (hkey_event) { 10449 case TP_HKEY_EV_VOL_UP: 10450 case TP_HKEY_EV_VOL_DOWN: 10451 case TP_HKEY_EV_VOL_MUTE: 10452 volume_alsa_notify_change(); 10453 } 10454 } 10455 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 10456 enum led_brightness brightness; 10457 10458 mutex_lock(&kbdlight_mutex); 10459 10460 /* 10461 * Check the brightness actually changed, setting the brightness 10462 * through kbdlight_set_level() also triggers this event. 10463 */ 10464 brightness = kbdlight_sysfs_get(NULL); 10465 if (kbdlight_brightness != brightness) { 10466 kbdlight_brightness = brightness; 10467 led_classdev_notify_brightness_hw_changed( 10468 &tpacpi_led_kbdlight.led_classdev, brightness); 10469 } 10470 10471 mutex_unlock(&kbdlight_mutex); 10472 } 10473 10474 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 10475 lapsensor_refresh(); 10476 /* If we are already accessing DYTC then skip dytc update */ 10477 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 10478 dytc_profile_refresh(); 10479 } 10480 } 10481 10482 static void hotkey_driver_event(const unsigned int scancode) 10483 { 10484 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 10485 } 10486 10487 /* --------------------------------------------------------------------- */ 10488 10489 /* /proc support */ 10490 static struct proc_dir_entry *proc_dir; 10491 10492 /* 10493 * Module and infrastructure proble, init and exit handling 10494 */ 10495 10496 static bool force_load; 10497 10498 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 10499 static const char * __init str_supported(int is_supported) 10500 { 10501 static char text_unsupported[] __initdata = "not supported"; 10502 10503 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10504 } 10505 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10506 10507 static void ibm_exit(struct ibm_struct *ibm) 10508 { 10509 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10510 10511 list_del_init(&ibm->all_drivers); 10512 10513 if (ibm->flags.acpi_notify_installed) { 10514 dbg_printk(TPACPI_DBG_EXIT, 10515 "%s: acpi_remove_notify_handler\n", ibm->name); 10516 BUG_ON(!ibm->acpi); 10517 acpi_remove_notify_handler(*ibm->acpi->handle, 10518 ibm->acpi->type, 10519 dispatch_acpi_notify); 10520 ibm->flags.acpi_notify_installed = 0; 10521 } 10522 10523 if (ibm->flags.proc_created) { 10524 dbg_printk(TPACPI_DBG_EXIT, 10525 "%s: remove_proc_entry\n", ibm->name); 10526 remove_proc_entry(ibm->name, proc_dir); 10527 ibm->flags.proc_created = 0; 10528 } 10529 10530 if (ibm->flags.acpi_driver_registered) { 10531 dbg_printk(TPACPI_DBG_EXIT, 10532 "%s: acpi_bus_unregister_driver\n", ibm->name); 10533 BUG_ON(!ibm->acpi); 10534 acpi_bus_unregister_driver(ibm->acpi->driver); 10535 kfree(ibm->acpi->driver); 10536 ibm->acpi->driver = NULL; 10537 ibm->flags.acpi_driver_registered = 0; 10538 } 10539 10540 if (ibm->flags.init_called && ibm->exit) { 10541 ibm->exit(); 10542 ibm->flags.init_called = 0; 10543 } 10544 10545 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10546 } 10547 10548 static int __init ibm_init(struct ibm_init_struct *iibm) 10549 { 10550 int ret; 10551 struct ibm_struct *ibm = iibm->data; 10552 struct proc_dir_entry *entry; 10553 10554 BUG_ON(ibm == NULL); 10555 10556 INIT_LIST_HEAD(&ibm->all_drivers); 10557 10558 if (ibm->flags.experimental && !experimental) 10559 return 0; 10560 10561 dbg_printk(TPACPI_DBG_INIT, 10562 "probing for %s\n", ibm->name); 10563 10564 if (iibm->init) { 10565 ret = iibm->init(iibm); 10566 if (ret > 0) 10567 return 0; /* probe failed */ 10568 if (ret) 10569 return ret; 10570 10571 ibm->flags.init_called = 1; 10572 } 10573 10574 if (ibm->acpi) { 10575 if (ibm->acpi->hid) { 10576 ret = register_tpacpi_subdriver(ibm); 10577 if (ret) 10578 goto err_out; 10579 } 10580 10581 if (ibm->acpi->notify) { 10582 ret = setup_acpi_notify(ibm); 10583 if (ret == -ENODEV) { 10584 pr_notice("disabling subdriver %s\n", 10585 ibm->name); 10586 ret = 0; 10587 goto err_out; 10588 } 10589 if (ret < 0) 10590 goto err_out; 10591 } 10592 } 10593 10594 dbg_printk(TPACPI_DBG_INIT, 10595 "%s installed\n", ibm->name); 10596 10597 if (ibm->read) { 10598 umode_t mode = iibm->base_procfs_mode; 10599 10600 if (!mode) 10601 mode = S_IRUGO; 10602 if (ibm->write) 10603 mode |= S_IWUSR; 10604 entry = proc_create_data(ibm->name, mode, proc_dir, 10605 &dispatch_proc_ops, ibm); 10606 if (!entry) { 10607 pr_err("unable to create proc entry %s\n", ibm->name); 10608 ret = -ENODEV; 10609 goto err_out; 10610 } 10611 ibm->flags.proc_created = 1; 10612 } 10613 10614 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10615 10616 return 0; 10617 10618 err_out: 10619 dbg_printk(TPACPI_DBG_INIT, 10620 "%s: at error exit path with result %d\n", 10621 ibm->name, ret); 10622 10623 ibm_exit(ibm); 10624 return (ret < 0) ? ret : 0; 10625 } 10626 10627 /* Probing */ 10628 10629 static char __init tpacpi_parse_fw_id(const char * const s, 10630 u32 *model, u16 *release) 10631 { 10632 int i; 10633 10634 if (!s || strlen(s) < 8) 10635 goto invalid; 10636 10637 for (i = 0; i < 8; i++) 10638 if (!((s[i] >= '0' && s[i] <= '9') || 10639 (s[i] >= 'A' && s[i] <= 'Z'))) 10640 goto invalid; 10641 10642 /* 10643 * Most models: xxyTkkWW (#.##c) 10644 * Ancient 570/600 and -SL lacks (#.##c) 10645 */ 10646 if (s[3] == 'T' || s[3] == 'N') { 10647 *model = TPID(s[0], s[1]); 10648 *release = TPVER(s[4], s[5]); 10649 return s[2]; 10650 10651 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10652 } else if (s[4] == 'T' || s[4] == 'N') { 10653 *model = TPID3(s[0], s[1], s[2]); 10654 *release = TPVER(s[5], s[6]); 10655 return s[3]; 10656 } 10657 10658 invalid: 10659 return '\0'; 10660 } 10661 10662 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10663 { 10664 char *ec_fw_string = (char *) private; 10665 const char *dmi_data = (const char *)dm; 10666 /* 10667 * ThinkPad Embedded Controller Program Table on newer models 10668 * 10669 * Offset | Name | Width | Description 10670 * ---------------------------------------------------- 10671 * 0x00 | Type | BYTE | 0x8C 10672 * 0x01 | Length | BYTE | 10673 * 0x02 | Handle | WORD | Varies 10674 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10675 * 0x0A | OEM struct offset | BYTE | 0x0B 10676 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10677 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10678 * 0x0D | ECP version ID | STR ID | 10679 * 0x0E | ECP release date | STR ID | 10680 */ 10681 10682 /* Return if data structure not match */ 10683 if (dm->type != 140 || dm->length < 0x0F || 10684 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10685 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10686 dmi_data[0x0C] != 0x01) 10687 return; 10688 10689 /* fwstr is the first 8byte string */ 10690 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10691 } 10692 10693 /* returns 0 - probe ok, or < 0 - probe error. 10694 * Probe ok doesn't mean thinkpad found. 10695 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10696 static int __must_check __init get_thinkpad_model_data( 10697 struct thinkpad_id_data *tp) 10698 { 10699 const struct dmi_device *dev = NULL; 10700 char ec_fw_string[18] = {0}; 10701 char const *s; 10702 char t; 10703 10704 if (!tp) 10705 return -EINVAL; 10706 10707 memset(tp, 0, sizeof(*tp)); 10708 10709 if (dmi_name_in_vendors("IBM")) 10710 tp->vendor = PCI_VENDOR_ID_IBM; 10711 else if (dmi_name_in_vendors("LENOVO")) 10712 tp->vendor = PCI_VENDOR_ID_LENOVO; 10713 else 10714 return 0; 10715 10716 s = dmi_get_system_info(DMI_BIOS_VERSION); 10717 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10718 if (s && !tp->bios_version_str) 10719 return -ENOMEM; 10720 10721 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10722 t = tpacpi_parse_fw_id(tp->bios_version_str, 10723 &tp->bios_model, &tp->bios_release); 10724 if (t != 'E' && t != 'C') 10725 return 0; 10726 10727 /* 10728 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10729 * X32 or newer, all Z series; Some models must have an 10730 * up-to-date BIOS or they will not be detected. 10731 * 10732 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10733 */ 10734 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10735 if (sscanf(dev->name, 10736 "IBM ThinkPad Embedded Controller -[%17c", 10737 ec_fw_string) == 1) { 10738 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10739 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10740 break; 10741 } 10742 } 10743 10744 /* Newer ThinkPads have different EC program info table */ 10745 if (!ec_fw_string[0]) 10746 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10747 10748 if (ec_fw_string[0]) { 10749 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10750 if (!tp->ec_version_str) 10751 return -ENOMEM; 10752 10753 t = tpacpi_parse_fw_id(ec_fw_string, 10754 &tp->ec_model, &tp->ec_release); 10755 if (t != 'H') { 10756 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10757 ec_fw_string); 10758 pr_notice("please report this to %s\n", TPACPI_MAIL); 10759 } 10760 } 10761 10762 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10763 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10764 tp->model_str = kstrdup(s, GFP_KERNEL); 10765 if (!tp->model_str) 10766 return -ENOMEM; 10767 } else { 10768 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10769 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10770 tp->model_str = kstrdup(s, GFP_KERNEL); 10771 if (!tp->model_str) 10772 return -ENOMEM; 10773 } 10774 } 10775 10776 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10777 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10778 if (s && !tp->nummodel_str) 10779 return -ENOMEM; 10780 10781 return 0; 10782 } 10783 10784 static int __init probe_for_thinkpad(void) 10785 { 10786 int is_thinkpad; 10787 10788 if (acpi_disabled) 10789 return -ENODEV; 10790 10791 /* It would be dangerous to run the driver in this case */ 10792 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10793 return -ENODEV; 10794 10795 /* 10796 * Non-ancient models have better DMI tagging, but very old models 10797 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10798 */ 10799 is_thinkpad = (thinkpad_id.model_str != NULL) || 10800 (thinkpad_id.ec_model != 0) || 10801 tpacpi_is_fw_known(); 10802 10803 /* The EC handler is required */ 10804 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10805 if (!ec_handle) { 10806 if (is_thinkpad) 10807 pr_err("Not yet supported ThinkPad detected!\n"); 10808 return -ENODEV; 10809 } 10810 10811 if (!is_thinkpad && !force_load) 10812 return -ENODEV; 10813 10814 return 0; 10815 } 10816 10817 static void __init thinkpad_acpi_init_banner(void) 10818 { 10819 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 10820 pr_info("%s\n", TPACPI_URL); 10821 10822 pr_info("ThinkPad BIOS %s, EC %s\n", 10823 (thinkpad_id.bios_version_str) ? 10824 thinkpad_id.bios_version_str : "unknown", 10825 (thinkpad_id.ec_version_str) ? 10826 thinkpad_id.ec_version_str : "unknown"); 10827 10828 BUG_ON(!thinkpad_id.vendor); 10829 10830 if (thinkpad_id.model_str) 10831 pr_info("%s %s, model %s\n", 10832 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 10833 "IBM" : ((thinkpad_id.vendor == 10834 PCI_VENDOR_ID_LENOVO) ? 10835 "Lenovo" : "Unknown vendor"), 10836 thinkpad_id.model_str, 10837 (thinkpad_id.nummodel_str) ? 10838 thinkpad_id.nummodel_str : "unknown"); 10839 } 10840 10841 /* Module init, exit, parameters */ 10842 10843 static struct ibm_init_struct ibms_init[] __initdata = { 10844 { 10845 .data = &thinkpad_acpi_driver_data, 10846 }, 10847 { 10848 .init = hotkey_init, 10849 .data = &hotkey_driver_data, 10850 }, 10851 { 10852 .init = bluetooth_init, 10853 .data = &bluetooth_driver_data, 10854 }, 10855 { 10856 .init = wan_init, 10857 .data = &wan_driver_data, 10858 }, 10859 { 10860 .init = uwb_init, 10861 .data = &uwb_driver_data, 10862 }, 10863 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 10864 { 10865 .init = video_init, 10866 .base_procfs_mode = S_IRUSR, 10867 .data = &video_driver_data, 10868 }, 10869 #endif 10870 { 10871 .init = kbdlight_init, 10872 .data = &kbdlight_driver_data, 10873 }, 10874 { 10875 .init = light_init, 10876 .data = &light_driver_data, 10877 }, 10878 { 10879 .init = cmos_init, 10880 .data = &cmos_driver_data, 10881 }, 10882 { 10883 .init = led_init, 10884 .data = &led_driver_data, 10885 }, 10886 { 10887 .init = beep_init, 10888 .data = &beep_driver_data, 10889 }, 10890 { 10891 .init = thermal_init, 10892 .data = &thermal_driver_data, 10893 }, 10894 { 10895 .init = brightness_init, 10896 .data = &brightness_driver_data, 10897 }, 10898 { 10899 .init = volume_init, 10900 .data = &volume_driver_data, 10901 }, 10902 { 10903 .init = fan_init, 10904 .data = &fan_driver_data, 10905 }, 10906 { 10907 .init = mute_led_init, 10908 .data = &mute_led_driver_data, 10909 }, 10910 { 10911 .init = tpacpi_battery_init, 10912 .data = &battery_driver_data, 10913 }, 10914 { 10915 .init = tpacpi_lcdshadow_init, 10916 .data = &lcdshadow_driver_data, 10917 }, 10918 { 10919 .init = tpacpi_proxsensor_init, 10920 .data = &proxsensor_driver_data, 10921 }, 10922 { 10923 .init = tpacpi_dytc_profile_init, 10924 .data = &dytc_profile_driver_data, 10925 }, 10926 { 10927 .init = tpacpi_kbdlang_init, 10928 .data = &kbdlang_driver_data, 10929 }, 10930 }; 10931 10932 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 10933 { 10934 unsigned int i; 10935 struct ibm_struct *ibm; 10936 10937 if (!kp || !kp->name || !val) 10938 return -EINVAL; 10939 10940 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10941 ibm = ibms_init[i].data; 10942 WARN_ON(ibm == NULL); 10943 10944 if (!ibm || !ibm->name) 10945 continue; 10946 10947 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 10948 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 10949 return -ENOSPC; 10950 strcpy(ibms_init[i].param, val); 10951 return 0; 10952 } 10953 } 10954 10955 return -EINVAL; 10956 } 10957 10958 module_param(experimental, int, 0444); 10959 MODULE_PARM_DESC(experimental, 10960 "Enables experimental features when non-zero"); 10961 10962 module_param_named(debug, dbg_level, uint, 0); 10963 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 10964 10965 module_param(force_load, bool, 0444); 10966 MODULE_PARM_DESC(force_load, 10967 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 10968 10969 module_param_named(fan_control, fan_control_allowed, bool, 0444); 10970 MODULE_PARM_DESC(fan_control, 10971 "Enables setting fan parameters features when true"); 10972 10973 module_param_named(brightness_mode, brightness_mode, uint, 0444); 10974 MODULE_PARM_DESC(brightness_mode, 10975 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 10976 10977 module_param(brightness_enable, uint, 0444); 10978 MODULE_PARM_DESC(brightness_enable, 10979 "Enables backlight control when 1, disables when 0"); 10980 10981 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 10982 module_param_named(volume_mode, volume_mode, uint, 0444); 10983 MODULE_PARM_DESC(volume_mode, 10984 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 10985 10986 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 10987 MODULE_PARM_DESC(volume_capabilities, 10988 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 10989 10990 module_param_named(volume_control, volume_control_allowed, bool, 0444); 10991 MODULE_PARM_DESC(volume_control, 10992 "Enables software override for the console audio control when true"); 10993 10994 module_param_named(software_mute, software_mute_requested, bool, 0444); 10995 MODULE_PARM_DESC(software_mute, 10996 "Request full software mute control"); 10997 10998 /* ALSA module API parameters */ 10999 module_param_named(index, alsa_index, int, 0444); 11000 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11001 module_param_named(id, alsa_id, charp, 0444); 11002 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11003 module_param_named(enable, alsa_enable, bool, 0444); 11004 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11005 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11006 11007 /* The module parameter can't be read back, that's why 0 is used here */ 11008 #define TPACPI_PARAM(feature) \ 11009 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11010 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11011 11012 TPACPI_PARAM(hotkey); 11013 TPACPI_PARAM(bluetooth); 11014 TPACPI_PARAM(video); 11015 TPACPI_PARAM(light); 11016 TPACPI_PARAM(cmos); 11017 TPACPI_PARAM(led); 11018 TPACPI_PARAM(beep); 11019 TPACPI_PARAM(brightness); 11020 TPACPI_PARAM(volume); 11021 TPACPI_PARAM(fan); 11022 11023 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11024 module_param(dbg_wlswemul, uint, 0444); 11025 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11026 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11027 MODULE_PARM_DESC(wlsw_state, 11028 "Initial state of the emulated WLSW switch"); 11029 11030 module_param(dbg_bluetoothemul, uint, 0444); 11031 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11032 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11033 MODULE_PARM_DESC(bluetooth_state, 11034 "Initial state of the emulated bluetooth switch"); 11035 11036 module_param(dbg_wwanemul, uint, 0444); 11037 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11038 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11039 MODULE_PARM_DESC(wwan_state, 11040 "Initial state of the emulated WWAN switch"); 11041 11042 module_param(dbg_uwbemul, uint, 0444); 11043 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11044 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11045 MODULE_PARM_DESC(uwb_state, 11046 "Initial state of the emulated UWB switch"); 11047 #endif 11048 11049 static void thinkpad_acpi_module_exit(void) 11050 { 11051 struct ibm_struct *ibm, *itmp; 11052 11053 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11054 11055 list_for_each_entry_safe_reverse(ibm, itmp, 11056 &tpacpi_all_drivers, 11057 all_drivers) { 11058 ibm_exit(ibm); 11059 } 11060 11061 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11062 11063 if (tpacpi_inputdev) { 11064 if (tp_features.input_device_registered) 11065 input_unregister_device(tpacpi_inputdev); 11066 else 11067 input_free_device(tpacpi_inputdev); 11068 kfree(hotkey_keycode_map); 11069 } 11070 11071 if (tpacpi_hwmon) 11072 hwmon_device_unregister(tpacpi_hwmon); 11073 11074 if (tpacpi_sensors_pdev) 11075 platform_device_unregister(tpacpi_sensors_pdev); 11076 if (tpacpi_pdev) 11077 platform_device_unregister(tpacpi_pdev); 11078 11079 if (tp_features.sensors_pdrv_attrs_registered) 11080 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 11081 if (tp_features.platform_drv_attrs_registered) 11082 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 11083 11084 if (tp_features.sensors_pdrv_registered) 11085 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11086 11087 if (tp_features.platform_drv_registered) 11088 platform_driver_unregister(&tpacpi_pdriver); 11089 11090 if (proc_dir) 11091 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11092 11093 if (tpacpi_wq) 11094 destroy_workqueue(tpacpi_wq); 11095 11096 kfree(thinkpad_id.bios_version_str); 11097 kfree(thinkpad_id.ec_version_str); 11098 kfree(thinkpad_id.model_str); 11099 kfree(thinkpad_id.nummodel_str); 11100 } 11101 11102 11103 static int __init thinkpad_acpi_module_init(void) 11104 { 11105 int ret, i; 11106 11107 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11108 11109 /* Driver-level probe */ 11110 11111 ret = get_thinkpad_model_data(&thinkpad_id); 11112 if (ret) { 11113 pr_err("unable to get DMI data: %d\n", ret); 11114 thinkpad_acpi_module_exit(); 11115 return ret; 11116 } 11117 ret = probe_for_thinkpad(); 11118 if (ret) { 11119 thinkpad_acpi_module_exit(); 11120 return ret; 11121 } 11122 11123 /* Driver initialization */ 11124 11125 thinkpad_acpi_init_banner(); 11126 tpacpi_check_outdated_fw(); 11127 11128 TPACPI_ACPIHANDLE_INIT(ecrd); 11129 TPACPI_ACPIHANDLE_INIT(ecwr); 11130 11131 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11132 if (!tpacpi_wq) { 11133 thinkpad_acpi_module_exit(); 11134 return -ENOMEM; 11135 } 11136 11137 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11138 if (!proc_dir) { 11139 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11140 thinkpad_acpi_module_exit(); 11141 return -ENODEV; 11142 } 11143 11144 ret = platform_driver_register(&tpacpi_pdriver); 11145 if (ret) { 11146 pr_err("unable to register main platform driver\n"); 11147 thinkpad_acpi_module_exit(); 11148 return ret; 11149 } 11150 tp_features.platform_drv_registered = 1; 11151 11152 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11153 if (ret) { 11154 pr_err("unable to register hwmon platform driver\n"); 11155 thinkpad_acpi_module_exit(); 11156 return ret; 11157 } 11158 tp_features.sensors_pdrv_registered = 1; 11159 11160 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 11161 if (!ret) { 11162 tp_features.platform_drv_attrs_registered = 1; 11163 ret = tpacpi_create_driver_attributes( 11164 &tpacpi_hwmon_pdriver.driver); 11165 } 11166 if (ret) { 11167 pr_err("unable to create sysfs driver attributes\n"); 11168 thinkpad_acpi_module_exit(); 11169 return ret; 11170 } 11171 tp_features.sensors_pdrv_attrs_registered = 1; 11172 11173 11174 /* Device initialization */ 11175 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 11176 NULL, 0); 11177 if (IS_ERR(tpacpi_pdev)) { 11178 ret = PTR_ERR(tpacpi_pdev); 11179 tpacpi_pdev = NULL; 11180 pr_err("unable to register platform device\n"); 11181 thinkpad_acpi_module_exit(); 11182 return ret; 11183 } 11184 tpacpi_sensors_pdev = platform_device_register_simple( 11185 TPACPI_HWMON_DRVR_NAME, 11186 -1, NULL, 0); 11187 if (IS_ERR(tpacpi_sensors_pdev)) { 11188 ret = PTR_ERR(tpacpi_sensors_pdev); 11189 tpacpi_sensors_pdev = NULL; 11190 pr_err("unable to register hwmon platform device\n"); 11191 thinkpad_acpi_module_exit(); 11192 return ret; 11193 } 11194 tp_features.sensors_pdev_attrs_registered = 1; 11195 tpacpi_hwmon = hwmon_device_register_with_groups( 11196 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 11197 11198 if (IS_ERR(tpacpi_hwmon)) { 11199 ret = PTR_ERR(tpacpi_hwmon); 11200 tpacpi_hwmon = NULL; 11201 pr_err("unable to register hwmon device\n"); 11202 thinkpad_acpi_module_exit(); 11203 return ret; 11204 } 11205 mutex_init(&tpacpi_inputdev_send_mutex); 11206 tpacpi_inputdev = input_allocate_device(); 11207 if (!tpacpi_inputdev) { 11208 thinkpad_acpi_module_exit(); 11209 return -ENOMEM; 11210 } else { 11211 /* Prepare input device, but don't register */ 11212 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11213 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11214 tpacpi_inputdev->id.bustype = BUS_HOST; 11215 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11216 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11217 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11218 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11219 } 11220 11221 /* Init subdriver dependencies */ 11222 tpacpi_detect_brightness_capabilities(); 11223 11224 /* Init subdrivers */ 11225 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11226 ret = ibm_init(&ibms_init[i]); 11227 if (ret >= 0 && *ibms_init[i].param) 11228 ret = ibms_init[i].data->write(ibms_init[i].param); 11229 if (ret < 0) { 11230 thinkpad_acpi_module_exit(); 11231 return ret; 11232 } 11233 } 11234 11235 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11236 11237 ret = input_register_device(tpacpi_inputdev); 11238 if (ret < 0) { 11239 pr_err("unable to register input device\n"); 11240 thinkpad_acpi_module_exit(); 11241 return ret; 11242 } else { 11243 tp_features.input_device_registered = 1; 11244 } 11245 11246 return 0; 11247 } 11248 11249 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11250 11251 /* 11252 * This will autoload the driver in almost every ThinkPad 11253 * in widespread use. 11254 * 11255 * Only _VERY_ old models, like the 240, 240x and 570 lack 11256 * the HKEY event interface. 11257 */ 11258 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11259 11260 /* 11261 * DMI matching for module autoloading 11262 * 11263 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11264 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11265 * 11266 * Only models listed in thinkwiki will be supported, so add yours 11267 * if it is not there yet. 11268 */ 11269 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11270 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11271 11272 /* Ancient thinkpad BIOSes have to be identified by 11273 * BIOS type or model number, and there are far less 11274 * BIOS types than model numbers... */ 11275 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11276 11277 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11278 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11279 MODULE_DESCRIPTION(TPACPI_DESC); 11280 MODULE_VERSION(TPACPI_VERSION); 11281 MODULE_LICENSE("GPL"); 11282 11283 module_init(thinkpad_acpi_module_init); 11284 module_exit(thinkpad_acpi_module_exit); 11285