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