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 if (has_tablet_mode) 3222 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3223 type = "GMMS"; 3224 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3225 /* For X41t, X60t, X61t Tablets... */ 3226 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3227 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3228 type = "MHKG"; 3229 } 3230 3231 if (!tp_features.hotkey_tablet) 3232 return 0; 3233 3234 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3235 type, in_tablet_mode ? "tablet" : "laptop"); 3236 3237 res = add_to_attr_set(hotkey_dev_attributes, 3238 &dev_attr_hotkey_tablet_mode.attr); 3239 if (res) 3240 return -1; 3241 3242 return in_tablet_mode; 3243 } 3244 3245 static int __init hotkey_init(struct ibm_init_struct *iibm) 3246 { 3247 /* Requirements for changing the default keymaps: 3248 * 3249 * 1. Many of the keys are mapped to KEY_RESERVED for very 3250 * good reasons. Do not change them unless you have deep 3251 * knowledge on the IBM and Lenovo ThinkPad firmware for 3252 * the various ThinkPad models. The driver behaves 3253 * differently for KEY_RESERVED: such keys have their 3254 * hot key mask *unset* in mask_recommended, and also 3255 * in the initial hot key mask programmed into the 3256 * firmware at driver load time, which means the firm- 3257 * ware may react very differently if you change them to 3258 * something else; 3259 * 3260 * 2. You must be subscribed to the linux-thinkpad and 3261 * ibm-acpi-devel mailing lists, and you should read the 3262 * list archives since 2007 if you want to change the 3263 * keymaps. This requirement exists so that you will 3264 * know the past history of problems with the thinkpad- 3265 * acpi driver keymaps, and also that you will be 3266 * listening to any bug reports; 3267 * 3268 * 3. Do not send thinkpad-acpi specific patches directly to 3269 * for merging, *ever*. Send them to the linux-acpi 3270 * mailinglist for comments. Merging is to be done only 3271 * through acpi-test and the ACPI maintainer. 3272 * 3273 * If the above is too much to ask, don't change the keymap. 3274 * Ask the thinkpad-acpi maintainer to do it, instead. 3275 */ 3276 3277 enum keymap_index { 3278 TPACPI_KEYMAP_IBM_GENERIC = 0, 3279 TPACPI_KEYMAP_LENOVO_GENERIC, 3280 }; 3281 3282 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3283 /* Generic keymap for IBM ThinkPads */ 3284 [TPACPI_KEYMAP_IBM_GENERIC] = { 3285 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3286 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3287 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3288 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3289 3290 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3291 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3292 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3293 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3294 3295 /* brightness: firmware always reacts to them */ 3296 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3297 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3298 3299 /* Thinklight: firmware always react to it */ 3300 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3301 3302 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3303 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3304 3305 /* Volume: firmware always react to it and reprograms 3306 * the built-in *extra* mixer. Never map it to control 3307 * another mixer by default. */ 3308 KEY_RESERVED, /* 0x14: VOLUME UP */ 3309 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3310 KEY_RESERVED, /* 0x16: MUTE */ 3311 3312 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3313 3314 /* (assignments unknown, please report if found) */ 3315 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3316 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3317 3318 /* No assignments, only used for Adaptive keyboards. */ 3319 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3320 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3321 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3324 3325 /* No assignment, used for newer Lenovo models */ 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, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN 3332 3333 }, 3334 3335 /* Generic keymap for Lenovo ThinkPads */ 3336 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3337 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3338 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3339 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3340 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3341 3342 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3343 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3344 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3345 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3346 3347 /* These should be enabled --only-- when ACPI video 3348 * is disabled (i.e. in "vendor" mode), and are handled 3349 * in a special way by the init code */ 3350 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3351 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3352 3353 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3354 3355 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3356 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3357 3358 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3359 * react to it and reprograms the built-in *extra* mixer. 3360 * Never map it to control another mixer by default. 3361 * 3362 * T60?, T61, R60?, R61: firmware and EC tries to send 3363 * these over the regular keyboard, so these are no-ops, 3364 * but there are still weird bugs re. MUTE, so do not 3365 * change unless you get test reports from all Lenovo 3366 * models. May cause the BIOS to interfere with the 3367 * HDA mixer. 3368 */ 3369 KEY_RESERVED, /* 0x14: VOLUME UP */ 3370 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3371 KEY_RESERVED, /* 0x16: MUTE */ 3372 3373 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3374 3375 /* (assignments unknown, please report if found) */ 3376 KEY_UNKNOWN, KEY_UNKNOWN, 3377 3378 /* 3379 * The mic mute button only sends 0x1a. It does not 3380 * automatically mute the mic or change the mute light. 3381 */ 3382 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3383 3384 /* (assignments unknown, please report if found) */ 3385 KEY_UNKNOWN, 3386 3387 /* Extra keys in use since the X240 / T440 / T540 */ 3388 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3389 3390 /* 3391 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3392 * The first item in this list is the Mute button which is 3393 * emitted with 0x103 through 3394 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3395 * symbol is held. 3396 * We'll need to offset those by 0x20. 3397 */ 3398 KEY_RESERVED, /* Mute held, 0x103 */ 3399 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3400 KEY_RESERVED, /* Clipping tool */ 3401 KEY_RESERVED, /* Cloud */ 3402 KEY_RESERVED, 3403 KEY_VOICECOMMAND, /* Voice */ 3404 KEY_RESERVED, 3405 KEY_RESERVED, /* Gestures */ 3406 KEY_RESERVED, 3407 KEY_RESERVED, 3408 KEY_RESERVED, 3409 KEY_CONFIG, /* Settings */ 3410 KEY_RESERVED, /* New tab */ 3411 KEY_REFRESH, /* Reload */ 3412 KEY_BACK, /* Back */ 3413 KEY_RESERVED, /* Microphone down */ 3414 KEY_RESERVED, /* Microphone up */ 3415 KEY_RESERVED, /* Microphone cancellation */ 3416 KEY_RESERVED, /* Camera mode */ 3417 KEY_RESERVED, /* Rotate display, 0x116 */ 3418 3419 /* 3420 * These are found in 2017 models (e.g. T470s, X270). 3421 * The lowest known value is 0x311, which according to 3422 * the manual should launch a user defined favorite 3423 * application. 3424 * 3425 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3426 * corresponding to 0x34. 3427 */ 3428 3429 /* (assignments unknown, please report if found) */ 3430 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3431 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3432 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3433 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3434 KEY_UNKNOWN, 3435 3436 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3437 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3438 KEY_CALC, /* Calculator (above numpad, P52) */ 3439 KEY_BLUETOOTH, /* Bluetooth */ 3440 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3441 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3442 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3443 KEY_PICKUP_PHONE, /* Answer incoming call */ 3444 KEY_HANGUP_PHONE, /* Decline incoming call */ 3445 }, 3446 }; 3447 3448 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3449 /* Generic maps (fallback) */ 3450 { 3451 .vendor = PCI_VENDOR_ID_IBM, 3452 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3453 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3454 }, 3455 { 3456 .vendor = PCI_VENDOR_ID_LENOVO, 3457 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3458 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3459 }, 3460 }; 3461 3462 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3463 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3464 3465 int res, i; 3466 int status; 3467 int hkeyv; 3468 bool radiosw_state = false; 3469 bool tabletsw_state = false; 3470 3471 unsigned long quirks; 3472 unsigned long keymap_id; 3473 3474 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3475 "initializing hotkey subdriver\n"); 3476 3477 BUG_ON(!tpacpi_inputdev); 3478 BUG_ON(tpacpi_inputdev->open != NULL || 3479 tpacpi_inputdev->close != NULL); 3480 3481 TPACPI_ACPIHANDLE_INIT(hkey); 3482 mutex_init(&hotkey_mutex); 3483 3484 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3485 mutex_init(&hotkey_thread_data_mutex); 3486 #endif 3487 3488 /* hotkey not supported on 570 */ 3489 tp_features.hotkey = hkey_handle != NULL; 3490 3491 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3492 "hotkeys are %s\n", 3493 str_supported(tp_features.hotkey)); 3494 3495 if (!tp_features.hotkey) 3496 return 1; 3497 3498 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3499 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3500 3501 tpacpi_disable_brightness_delay(); 3502 3503 /* MUST have enough space for all attributes to be added to 3504 * hotkey_dev_attributes */ 3505 hotkey_dev_attributes = create_attr_set( 3506 ARRAY_SIZE(hotkey_attributes) + 2, 3507 NULL); 3508 if (!hotkey_dev_attributes) 3509 return -ENOMEM; 3510 res = add_many_to_attr_set(hotkey_dev_attributes, 3511 hotkey_attributes, 3512 ARRAY_SIZE(hotkey_attributes)); 3513 if (res) 3514 goto err_exit; 3515 3516 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3517 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3518 for HKEY interface version 0x100 */ 3519 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3520 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3521 "firmware HKEY interface version: 0x%x\n", 3522 hkeyv); 3523 3524 switch (hkeyv >> 8) { 3525 case 1: 3526 /* 3527 * MHKV 0x100 in A31, R40, R40e, 3528 * T4x, X31, and later 3529 */ 3530 3531 /* Paranoia check AND init hotkey_all_mask */ 3532 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3533 "MHKA", "qd")) { 3534 pr_err("missing MHKA handler, please report this to %s\n", 3535 TPACPI_MAIL); 3536 /* Fallback: pre-init for FN+F3,F4,F12 */ 3537 hotkey_all_mask = 0x080cU; 3538 } else { 3539 tp_features.hotkey_mask = 1; 3540 } 3541 break; 3542 3543 case 2: 3544 /* 3545 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3546 */ 3547 3548 /* Paranoia check AND init hotkey_all_mask */ 3549 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3550 "MHKA", "dd", 1)) { 3551 pr_err("missing MHKA handler, please report this to %s\n", 3552 TPACPI_MAIL); 3553 /* Fallback: pre-init for FN+F3,F4,F12 */ 3554 hotkey_all_mask = 0x080cU; 3555 } else { 3556 tp_features.hotkey_mask = 1; 3557 } 3558 3559 /* 3560 * Check if we have an adaptive keyboard, like on the 3561 * Lenovo Carbon X1 2014 (2nd Gen). 3562 */ 3563 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3564 "MHKA", "dd", 2)) { 3565 if (hotkey_adaptive_all_mask != 0) { 3566 tp_features.has_adaptive_kbd = true; 3567 res = sysfs_create_group( 3568 &tpacpi_pdev->dev.kobj, 3569 &adaptive_kbd_attr_group); 3570 if (res) 3571 goto err_exit; 3572 } 3573 } else { 3574 tp_features.has_adaptive_kbd = false; 3575 hotkey_adaptive_all_mask = 0x0U; 3576 } 3577 break; 3578 3579 default: 3580 pr_err("unknown version of the HKEY interface: 0x%x\n", 3581 hkeyv); 3582 pr_err("please report this to %s\n", TPACPI_MAIL); 3583 break; 3584 } 3585 } 3586 3587 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3588 "hotkey masks are %s\n", 3589 str_supported(tp_features.hotkey_mask)); 3590 3591 /* Init hotkey_all_mask if not initialized yet */ 3592 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3593 (quirks & TPACPI_HK_Q_INIMASK)) 3594 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3595 3596 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3597 if (tp_features.hotkey_mask) { 3598 /* hotkey_source_mask *must* be zero for 3599 * the first hotkey_mask_get to return hotkey_orig_mask */ 3600 res = hotkey_mask_get(); 3601 if (res) 3602 goto err_exit; 3603 3604 hotkey_orig_mask = hotkey_acpi_mask; 3605 } else { 3606 hotkey_orig_mask = hotkey_all_mask; 3607 hotkey_acpi_mask = hotkey_all_mask; 3608 } 3609 3610 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3611 if (dbg_wlswemul) { 3612 tp_features.hotkey_wlsw = 1; 3613 radiosw_state = !!tpacpi_wlsw_emulstate; 3614 pr_info("radio switch emulation enabled\n"); 3615 } else 3616 #endif 3617 /* Not all thinkpads have a hardware radio switch */ 3618 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3619 tp_features.hotkey_wlsw = 1; 3620 radiosw_state = !!status; 3621 pr_info("radio switch found; radios are %s\n", 3622 enabled(status, 0)); 3623 } 3624 if (tp_features.hotkey_wlsw) 3625 res = add_to_attr_set(hotkey_dev_attributes, 3626 &dev_attr_hotkey_radio_sw.attr); 3627 3628 res = hotkey_init_tablet_mode(); 3629 if (res < 0) 3630 goto err_exit; 3631 3632 tabletsw_state = res; 3633 3634 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3635 &tpacpi_pdev->dev.kobj); 3636 if (res) 3637 goto err_exit; 3638 3639 /* Set up key map */ 3640 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3641 ARRAY_SIZE(tpacpi_keymap_qtable)); 3642 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3643 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3644 "using keymap number %lu\n", keymap_id); 3645 3646 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3647 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3648 if (!hotkey_keycode_map) { 3649 pr_err("failed to allocate memory for key map\n"); 3650 res = -ENOMEM; 3651 goto err_exit; 3652 } 3653 3654 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3655 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3656 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3657 tpacpi_inputdev->keycode = hotkey_keycode_map; 3658 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3659 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3660 input_set_capability(tpacpi_inputdev, EV_KEY, 3661 hotkey_keycode_map[i]); 3662 } else { 3663 if (i < sizeof(hotkey_reserved_mask)*8) 3664 hotkey_reserved_mask |= 1 << i; 3665 } 3666 } 3667 3668 if (tp_features.hotkey_wlsw) { 3669 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3670 input_report_switch(tpacpi_inputdev, 3671 SW_RFKILL_ALL, radiosw_state); 3672 } 3673 if (tp_features.hotkey_tablet) { 3674 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3675 input_report_switch(tpacpi_inputdev, 3676 SW_TABLET_MODE, tabletsw_state); 3677 } 3678 3679 /* Do not issue duplicate brightness change events to 3680 * userspace. tpacpi_detect_brightness_capabilities() must have 3681 * been called before this point */ 3682 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3683 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3684 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3685 3686 /* Disable brightness up/down on Lenovo thinkpads when 3687 * ACPI is handling them, otherwise it is plain impossible 3688 * for userspace to do something even remotely sane */ 3689 hotkey_reserved_mask |= 3690 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3691 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3692 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3693 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3694 } 3695 3696 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3697 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3698 & ~hotkey_all_mask 3699 & ~hotkey_reserved_mask; 3700 3701 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3702 "hotkey source mask 0x%08x, polling freq %u\n", 3703 hotkey_source_mask, hotkey_poll_freq); 3704 #endif 3705 3706 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3707 "enabling firmware HKEY event interface...\n"); 3708 res = hotkey_status_set(true); 3709 if (res) { 3710 hotkey_exit(); 3711 return res; 3712 } 3713 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3714 | hotkey_driver_mask) 3715 & ~hotkey_source_mask); 3716 if (res < 0 && res != -ENXIO) { 3717 hotkey_exit(); 3718 return res; 3719 } 3720 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3721 & ~hotkey_reserved_mask; 3722 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3723 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3724 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3725 3726 tpacpi_inputdev->open = &hotkey_inputdev_open; 3727 tpacpi_inputdev->close = &hotkey_inputdev_close; 3728 3729 hotkey_poll_setup_safe(true); 3730 3731 return 0; 3732 3733 err_exit: 3734 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3735 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3736 &adaptive_kbd_attr_group); 3737 3738 hotkey_dev_attributes = NULL; 3739 3740 return (res < 0) ? res : 1; 3741 } 3742 3743 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3744 * mode, Web conference mode, Function mode and Lay-flat mode. 3745 * We support Home mode and Function mode currently. 3746 * 3747 * Will consider support rest of modes in future. 3748 * 3749 */ 3750 static const int adaptive_keyboard_modes[] = { 3751 HOME_MODE, 3752 /* WEB_BROWSER_MODE = 2, 3753 WEB_CONFERENCE_MODE = 3, */ 3754 FUNCTION_MODE 3755 }; 3756 3757 #define DFR_CHANGE_ROW 0x101 3758 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3759 #define FIRST_ADAPTIVE_KEY 0x103 3760 3761 /* press Fn key a while second, it will switch to Function Mode. Then 3762 * release Fn key, previous mode be restored. 3763 */ 3764 static bool adaptive_keyboard_mode_is_saved; 3765 static int adaptive_keyboard_prev_mode; 3766 3767 static int adaptive_keyboard_get_mode(void) 3768 { 3769 int mode = 0; 3770 3771 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3772 pr_err("Cannot read adaptive keyboard mode\n"); 3773 return -EIO; 3774 } 3775 3776 return mode; 3777 } 3778 3779 static int adaptive_keyboard_set_mode(int new_mode) 3780 { 3781 if (new_mode < 0 || 3782 new_mode > LAYFLAT_MODE) 3783 return -EINVAL; 3784 3785 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3786 pr_err("Cannot set adaptive keyboard mode\n"); 3787 return -EIO; 3788 } 3789 3790 return 0; 3791 } 3792 3793 static int adaptive_keyboard_get_next_mode(int mode) 3794 { 3795 size_t i; 3796 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3797 3798 for (i = 0; i <= max_mode; i++) { 3799 if (adaptive_keyboard_modes[i] == mode) 3800 break; 3801 } 3802 3803 if (i >= max_mode) 3804 i = 0; 3805 else 3806 i++; 3807 3808 return adaptive_keyboard_modes[i]; 3809 } 3810 3811 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3812 { 3813 int current_mode = 0; 3814 int new_mode = 0; 3815 int keycode; 3816 3817 switch (scancode) { 3818 case DFR_CHANGE_ROW: 3819 if (adaptive_keyboard_mode_is_saved) { 3820 new_mode = adaptive_keyboard_prev_mode; 3821 adaptive_keyboard_mode_is_saved = false; 3822 } else { 3823 current_mode = adaptive_keyboard_get_mode(); 3824 if (current_mode < 0) 3825 return false; 3826 new_mode = adaptive_keyboard_get_next_mode( 3827 current_mode); 3828 } 3829 3830 if (adaptive_keyboard_set_mode(new_mode) < 0) 3831 return false; 3832 3833 return true; 3834 3835 case DFR_SHOW_QUICKVIEW_ROW: 3836 current_mode = adaptive_keyboard_get_mode(); 3837 if (current_mode < 0) 3838 return false; 3839 3840 adaptive_keyboard_prev_mode = current_mode; 3841 adaptive_keyboard_mode_is_saved = true; 3842 3843 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3844 return false; 3845 return true; 3846 3847 default: 3848 if (scancode < FIRST_ADAPTIVE_KEY || 3849 scancode >= FIRST_ADAPTIVE_KEY + 3850 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3851 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3852 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3853 scancode); 3854 return false; 3855 } 3856 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3857 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3858 if (keycode != KEY_RESERVED) { 3859 mutex_lock(&tpacpi_inputdev_send_mutex); 3860 3861 input_report_key(tpacpi_inputdev, keycode, 1); 3862 input_sync(tpacpi_inputdev); 3863 3864 input_report_key(tpacpi_inputdev, keycode, 0); 3865 input_sync(tpacpi_inputdev); 3866 3867 mutex_unlock(&tpacpi_inputdev_send_mutex); 3868 } 3869 return true; 3870 } 3871 } 3872 3873 static bool hotkey_notify_hotkey(const u32 hkey, 3874 bool *send_acpi_ev, 3875 bool *ignore_acpi_ev) 3876 { 3877 /* 0x1000-0x1FFF: key presses */ 3878 unsigned int scancode = hkey & 0xfff; 3879 *send_acpi_ev = true; 3880 *ignore_acpi_ev = false; 3881 3882 /* 3883 * Original events are in the 0x10XX range, the adaptive keyboard 3884 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3885 * models, additional keys are emitted through 0x13XX. 3886 */ 3887 switch ((hkey >> 8) & 0xf) { 3888 case 0: 3889 if (scancode > 0 && 3890 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3891 /* HKEY event 0x1001 is scancode 0x00 */ 3892 scancode--; 3893 if (!(hotkey_source_mask & (1 << scancode))) { 3894 tpacpi_input_send_key_masked(scancode); 3895 *send_acpi_ev = false; 3896 } else { 3897 *ignore_acpi_ev = true; 3898 } 3899 return true; 3900 } 3901 break; 3902 3903 case 1: 3904 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3905 3906 case 3: 3907 /* Extended keycodes start at 0x300 and our offset into the map 3908 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3909 * will be positive, but might not be in the correct range. 3910 */ 3911 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3912 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3913 scancode < TPACPI_HOTKEY_MAP_LEN) { 3914 tpacpi_input_send_key(scancode); 3915 return true; 3916 } 3917 break; 3918 } 3919 3920 return false; 3921 } 3922 3923 static bool hotkey_notify_wakeup(const u32 hkey, 3924 bool *send_acpi_ev, 3925 bool *ignore_acpi_ev) 3926 { 3927 /* 0x2000-0x2FFF: Wakeup reason */ 3928 *send_acpi_ev = true; 3929 *ignore_acpi_ev = false; 3930 3931 switch (hkey) { 3932 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3933 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3934 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3935 *ignore_acpi_ev = true; 3936 break; 3937 3938 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3939 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3940 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3941 *ignore_acpi_ev = true; 3942 break; 3943 3944 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3945 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3946 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3947 /* how to auto-heal: */ 3948 /* 2313: woke up from S3, go to S4/S5 */ 3949 /* 2413: woke up from S4, go to S5 */ 3950 break; 3951 3952 default: 3953 return false; 3954 } 3955 3956 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3957 pr_info("woke up due to a hot-unplug request...\n"); 3958 hotkey_wakeup_reason_notify_change(); 3959 } 3960 return true; 3961 } 3962 3963 static bool hotkey_notify_dockevent(const u32 hkey, 3964 bool *send_acpi_ev, 3965 bool *ignore_acpi_ev) 3966 { 3967 /* 0x4000-0x4FFF: dock-related events */ 3968 *send_acpi_ev = true; 3969 *ignore_acpi_ev = false; 3970 3971 switch (hkey) { 3972 case TP_HKEY_EV_UNDOCK_ACK: 3973 /* ACPI undock operation completed after wakeup */ 3974 hotkey_autosleep_ack = 1; 3975 pr_info("undocked\n"); 3976 hotkey_wakeup_hotunplug_complete_notify_change(); 3977 return true; 3978 3979 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3980 pr_info("docked into hotplug port replicator\n"); 3981 return true; 3982 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3983 pr_info("undocked from hotplug port replicator\n"); 3984 return true; 3985 3986 default: 3987 return false; 3988 } 3989 } 3990 3991 static bool hotkey_notify_usrevent(const u32 hkey, 3992 bool *send_acpi_ev, 3993 bool *ignore_acpi_ev) 3994 { 3995 /* 0x5000-0x5FFF: human interface helpers */ 3996 *send_acpi_ev = true; 3997 *ignore_acpi_ev = false; 3998 3999 switch (hkey) { 4000 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4001 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4002 return true; 4003 4004 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4005 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4006 tpacpi_input_send_tabletsw(); 4007 hotkey_tablet_mode_notify_change(); 4008 *send_acpi_ev = false; 4009 return true; 4010 4011 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4012 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4013 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4014 /* do not propagate these events */ 4015 *ignore_acpi_ev = true; 4016 return true; 4017 4018 default: 4019 return false; 4020 } 4021 } 4022 4023 static void thermal_dump_all_sensors(void); 4024 4025 static bool hotkey_notify_6xxx(const u32 hkey, 4026 bool *send_acpi_ev, 4027 bool *ignore_acpi_ev) 4028 { 4029 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4030 *send_acpi_ev = true; 4031 *ignore_acpi_ev = false; 4032 4033 switch (hkey) { 4034 case TP_HKEY_EV_THM_TABLE_CHANGED: 4035 pr_debug("EC reports: Thermal Table has changed\n"); 4036 /* recommended action: do nothing, we don't have 4037 * Lenovo ATM information */ 4038 return true; 4039 case TP_HKEY_EV_THM_CSM_COMPLETED: 4040 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 4041 /* Thermal event - pass on to event handler */ 4042 tpacpi_driver_event(hkey); 4043 return true; 4044 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 4045 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 4046 /* recommended action: do nothing, we don't have 4047 * Lenovo ATM information */ 4048 return true; 4049 case TP_HKEY_EV_ALARM_BAT_HOT: 4050 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4051 /* recommended action: warn user through gui */ 4052 break; 4053 case TP_HKEY_EV_ALARM_BAT_XHOT: 4054 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4055 /* recommended action: immediate sleep/hibernate */ 4056 break; 4057 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4058 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4059 /* recommended action: warn user through gui, that */ 4060 /* some internal component is too hot */ 4061 break; 4062 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4063 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4064 /* recommended action: immediate sleep/hibernate */ 4065 break; 4066 case TP_HKEY_EV_AC_CHANGED: 4067 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4068 * AC status changed; can be triggered by plugging or 4069 * unplugging AC adapter, docking or undocking. */ 4070 4071 fallthrough; 4072 4073 case TP_HKEY_EV_KEY_NUMLOCK: 4074 case TP_HKEY_EV_KEY_FN: 4075 case TP_HKEY_EV_KEY_FN_ESC: 4076 /* key press events, we just ignore them as long as the EC 4077 * is still reporting them in the normal keyboard stream */ 4078 *send_acpi_ev = false; 4079 *ignore_acpi_ev = true; 4080 return true; 4081 4082 case TP_HKEY_EV_TABLET_CHANGED: 4083 tpacpi_input_send_tabletsw(); 4084 hotkey_tablet_mode_notify_change(); 4085 *send_acpi_ev = false; 4086 return true; 4087 4088 case TP_HKEY_EV_PALM_DETECTED: 4089 case TP_HKEY_EV_PALM_UNDETECTED: 4090 /* palm detected hovering the keyboard, forward to user-space 4091 * via netlink for consumption */ 4092 return true; 4093 4094 default: 4095 /* report simply as unknown, no sensor dump */ 4096 return false; 4097 } 4098 4099 thermal_dump_all_sensors(); 4100 return true; 4101 } 4102 4103 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4104 { 4105 u32 hkey; 4106 bool send_acpi_ev; 4107 bool ignore_acpi_ev; 4108 bool known_ev; 4109 4110 if (event != 0x80) { 4111 pr_err("unknown HKEY notification event %d\n", event); 4112 /* forward it to userspace, maybe it knows how to handle it */ 4113 acpi_bus_generate_netlink_event( 4114 ibm->acpi->device->pnp.device_class, 4115 dev_name(&ibm->acpi->device->dev), 4116 event, 0); 4117 return; 4118 } 4119 4120 while (1) { 4121 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4122 pr_err("failed to retrieve HKEY event\n"); 4123 return; 4124 } 4125 4126 if (hkey == 0) { 4127 /* queue empty */ 4128 return; 4129 } 4130 4131 send_acpi_ev = true; 4132 ignore_acpi_ev = false; 4133 4134 switch (hkey >> 12) { 4135 case 1: 4136 /* 0x1000-0x1FFF: key presses */ 4137 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4138 &ignore_acpi_ev); 4139 break; 4140 case 2: 4141 /* 0x2000-0x2FFF: Wakeup reason */ 4142 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4143 &ignore_acpi_ev); 4144 break; 4145 case 3: 4146 /* 0x3000-0x3FFF: bay-related wakeups */ 4147 switch (hkey) { 4148 case TP_HKEY_EV_BAYEJ_ACK: 4149 hotkey_autosleep_ack = 1; 4150 pr_info("bay ejected\n"); 4151 hotkey_wakeup_hotunplug_complete_notify_change(); 4152 known_ev = true; 4153 break; 4154 case TP_HKEY_EV_OPTDRV_EJ: 4155 /* FIXME: kick libata if SATA link offline */ 4156 known_ev = true; 4157 break; 4158 default: 4159 known_ev = false; 4160 } 4161 break; 4162 case 4: 4163 /* 0x4000-0x4FFF: dock-related events */ 4164 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4165 &ignore_acpi_ev); 4166 break; 4167 case 5: 4168 /* 0x5000-0x5FFF: human interface helpers */ 4169 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4170 &ignore_acpi_ev); 4171 break; 4172 case 6: 4173 /* 0x6000-0x6FFF: thermal alarms/notices and 4174 * keyboard events */ 4175 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4176 &ignore_acpi_ev); 4177 break; 4178 case 7: 4179 /* 0x7000-0x7FFF: misc */ 4180 if (tp_features.hotkey_wlsw && 4181 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4182 tpacpi_send_radiosw_update(); 4183 send_acpi_ev = 0; 4184 known_ev = true; 4185 break; 4186 } 4187 fallthrough; /* to default */ 4188 default: 4189 known_ev = false; 4190 } 4191 if (!known_ev) { 4192 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4193 pr_notice("please report the conditions when this event happened to %s\n", 4194 TPACPI_MAIL); 4195 } 4196 4197 /* netlink events */ 4198 if (!ignore_acpi_ev && send_acpi_ev) { 4199 acpi_bus_generate_netlink_event( 4200 ibm->acpi->device->pnp.device_class, 4201 dev_name(&ibm->acpi->device->dev), 4202 event, hkey); 4203 } 4204 } 4205 } 4206 4207 static void hotkey_suspend(void) 4208 { 4209 /* Do these on suspend, we get the events on early resume! */ 4210 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4211 hotkey_autosleep_ack = 0; 4212 4213 /* save previous mode of adaptive keyboard of X1 Carbon */ 4214 if (tp_features.has_adaptive_kbd) { 4215 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4216 "GTRW", "dd", 0)) { 4217 pr_err("Cannot read adaptive keyboard mode.\n"); 4218 } 4219 } 4220 } 4221 4222 static void hotkey_resume(void) 4223 { 4224 tpacpi_disable_brightness_delay(); 4225 4226 if (hotkey_status_set(true) < 0 || 4227 hotkey_mask_set(hotkey_acpi_mask) < 0) 4228 pr_err("error while attempting to reset the event firmware interface\n"); 4229 4230 tpacpi_send_radiosw_update(); 4231 hotkey_tablet_mode_notify_change(); 4232 hotkey_wakeup_reason_notify_change(); 4233 hotkey_wakeup_hotunplug_complete_notify_change(); 4234 hotkey_poll_setup_safe(false); 4235 4236 /* restore previous mode of adapive keyboard of X1 Carbon */ 4237 if (tp_features.has_adaptive_kbd) { 4238 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4239 adaptive_keyboard_prev_mode)) { 4240 pr_err("Cannot set adaptive keyboard mode.\n"); 4241 } 4242 } 4243 } 4244 4245 /* procfs -------------------------------------------------------------- */ 4246 static int hotkey_read(struct seq_file *m) 4247 { 4248 int res, status; 4249 4250 if (!tp_features.hotkey) { 4251 seq_printf(m, "status:\t\tnot supported\n"); 4252 return 0; 4253 } 4254 4255 if (mutex_lock_killable(&hotkey_mutex)) 4256 return -ERESTARTSYS; 4257 res = hotkey_status_get(&status); 4258 if (!res) 4259 res = hotkey_mask_get(); 4260 mutex_unlock(&hotkey_mutex); 4261 if (res) 4262 return res; 4263 4264 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4265 if (hotkey_all_mask) { 4266 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4267 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4268 } else { 4269 seq_printf(m, "mask:\t\tnot supported\n"); 4270 seq_printf(m, "commands:\tenable, disable, reset\n"); 4271 } 4272 4273 return 0; 4274 } 4275 4276 static void hotkey_enabledisable_warn(bool enable) 4277 { 4278 tpacpi_log_usertask("procfs hotkey enable/disable"); 4279 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4280 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4281 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4282 } 4283 4284 static int hotkey_write(char *buf) 4285 { 4286 int res; 4287 u32 mask; 4288 char *cmd; 4289 4290 if (!tp_features.hotkey) 4291 return -ENODEV; 4292 4293 if (mutex_lock_killable(&hotkey_mutex)) 4294 return -ERESTARTSYS; 4295 4296 mask = hotkey_user_mask; 4297 4298 res = 0; 4299 while ((cmd = strsep(&buf, ","))) { 4300 if (strlencmp(cmd, "enable") == 0) { 4301 hotkey_enabledisable_warn(1); 4302 } else if (strlencmp(cmd, "disable") == 0) { 4303 hotkey_enabledisable_warn(0); 4304 res = -EPERM; 4305 } else if (strlencmp(cmd, "reset") == 0) { 4306 mask = (hotkey_all_mask | hotkey_source_mask) 4307 & ~hotkey_reserved_mask; 4308 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4309 /* mask set */ 4310 } else if (sscanf(cmd, "%x", &mask) == 1) { 4311 /* mask set */ 4312 } else { 4313 res = -EINVAL; 4314 goto errexit; 4315 } 4316 } 4317 4318 if (!res) { 4319 tpacpi_disclose_usertask("procfs hotkey", 4320 "set mask to 0x%08x\n", mask); 4321 res = hotkey_user_mask_set(mask); 4322 } 4323 4324 errexit: 4325 mutex_unlock(&hotkey_mutex); 4326 return res; 4327 } 4328 4329 static const struct acpi_device_id ibm_htk_device_ids[] = { 4330 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4331 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4332 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4333 {"", 0}, 4334 }; 4335 4336 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4337 .hid = ibm_htk_device_ids, 4338 .notify = hotkey_notify, 4339 .handle = &hkey_handle, 4340 .type = ACPI_DEVICE_NOTIFY, 4341 }; 4342 4343 static struct ibm_struct hotkey_driver_data = { 4344 .name = "hotkey", 4345 .read = hotkey_read, 4346 .write = hotkey_write, 4347 .exit = hotkey_exit, 4348 .resume = hotkey_resume, 4349 .suspend = hotkey_suspend, 4350 .acpi = &ibm_hotkey_acpidriver, 4351 }; 4352 4353 /************************************************************************* 4354 * Bluetooth subdriver 4355 */ 4356 4357 enum { 4358 /* ACPI GBDC/SBDC bits */ 4359 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4360 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4361 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4362 0 = disable, 1 = enable */ 4363 }; 4364 4365 enum { 4366 /* ACPI \BLTH commands */ 4367 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4368 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4369 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4370 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4371 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4372 }; 4373 4374 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4375 4376 static int bluetooth_get_status(void) 4377 { 4378 int status; 4379 4380 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4381 if (dbg_bluetoothemul) 4382 return (tpacpi_bluetooth_emulstate) ? 4383 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4384 #endif 4385 4386 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4387 return -EIO; 4388 4389 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4390 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4391 } 4392 4393 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4394 { 4395 int status; 4396 4397 vdbg_printk(TPACPI_DBG_RFKILL, 4398 "will attempt to %s bluetooth\n", 4399 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4400 4401 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4402 if (dbg_bluetoothemul) { 4403 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4404 return 0; 4405 } 4406 #endif 4407 4408 if (state == TPACPI_RFK_RADIO_ON) 4409 status = TP_ACPI_BLUETOOTH_RADIOSSW 4410 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4411 else 4412 status = 0; 4413 4414 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4415 return -EIO; 4416 4417 return 0; 4418 } 4419 4420 /* sysfs bluetooth enable ---------------------------------------------- */ 4421 static ssize_t bluetooth_enable_show(struct device *dev, 4422 struct device_attribute *attr, 4423 char *buf) 4424 { 4425 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4426 attr, buf); 4427 } 4428 4429 static ssize_t bluetooth_enable_store(struct device *dev, 4430 struct device_attribute *attr, 4431 const char *buf, size_t count) 4432 { 4433 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4434 attr, buf, count); 4435 } 4436 4437 static DEVICE_ATTR_RW(bluetooth_enable); 4438 4439 /* --------------------------------------------------------------------- */ 4440 4441 static struct attribute *bluetooth_attributes[] = { 4442 &dev_attr_bluetooth_enable.attr, 4443 NULL 4444 }; 4445 4446 static const struct attribute_group bluetooth_attr_group = { 4447 .attrs = bluetooth_attributes, 4448 }; 4449 4450 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4451 .get_status = bluetooth_get_status, 4452 .set_status = bluetooth_set_status, 4453 }; 4454 4455 static void bluetooth_shutdown(void) 4456 { 4457 /* Order firmware to save current state to NVRAM */ 4458 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4459 TP_ACPI_BLTH_SAVE_STATE)) 4460 pr_notice("failed to save bluetooth state to NVRAM\n"); 4461 else 4462 vdbg_printk(TPACPI_DBG_RFKILL, 4463 "bluetooth state saved to NVRAM\n"); 4464 } 4465 4466 static void bluetooth_exit(void) 4467 { 4468 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4469 &bluetooth_attr_group); 4470 4471 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4472 4473 bluetooth_shutdown(); 4474 } 4475 4476 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4477 { 4478 .ident = "ThinkPad E485", 4479 .matches = { 4480 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4481 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4482 }, 4483 }, 4484 { 4485 .ident = "ThinkPad E585", 4486 .matches = { 4487 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4488 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4489 }, 4490 }, 4491 { 4492 .ident = "ThinkPad A285 - 20MW", 4493 .matches = { 4494 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4495 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4496 }, 4497 }, 4498 { 4499 .ident = "ThinkPad A285 - 20MX", 4500 .matches = { 4501 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4502 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4503 }, 4504 }, 4505 { 4506 .ident = "ThinkPad A485 - 20MU", 4507 .matches = { 4508 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4509 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4510 }, 4511 }, 4512 { 4513 .ident = "ThinkPad A485 - 20MV", 4514 .matches = { 4515 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4516 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4517 }, 4518 }, 4519 {} 4520 }; 4521 4522 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4523 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4524 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4525 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4526 {} 4527 }; 4528 4529 4530 static int __init have_bt_fwbug(void) 4531 { 4532 /* 4533 * Some AMD based ThinkPads have a firmware bug that calling 4534 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4535 */ 4536 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4537 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4538 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4539 return 1; 4540 } else 4541 return 0; 4542 } 4543 4544 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4545 { 4546 int res; 4547 int status = 0; 4548 4549 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4550 "initializing bluetooth subdriver\n"); 4551 4552 TPACPI_ACPIHANDLE_INIT(hkey); 4553 4554 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4555 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4556 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4557 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4558 4559 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4560 "bluetooth is %s, status 0x%02x\n", 4561 str_supported(tp_features.bluetooth), 4562 status); 4563 4564 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4565 if (dbg_bluetoothemul) { 4566 tp_features.bluetooth = 1; 4567 pr_info("bluetooth switch emulation enabled\n"); 4568 } else 4569 #endif 4570 if (tp_features.bluetooth && 4571 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4572 /* no bluetooth hardware present in system */ 4573 tp_features.bluetooth = 0; 4574 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4575 "bluetooth hardware not installed\n"); 4576 } 4577 4578 if (!tp_features.bluetooth) 4579 return 1; 4580 4581 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4582 &bluetooth_tprfk_ops, 4583 RFKILL_TYPE_BLUETOOTH, 4584 TPACPI_RFK_BLUETOOTH_SW_NAME, 4585 true); 4586 if (res) 4587 return res; 4588 4589 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4590 &bluetooth_attr_group); 4591 if (res) { 4592 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4593 return res; 4594 } 4595 4596 return 0; 4597 } 4598 4599 /* procfs -------------------------------------------------------------- */ 4600 static int bluetooth_read(struct seq_file *m) 4601 { 4602 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4603 } 4604 4605 static int bluetooth_write(char *buf) 4606 { 4607 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4608 } 4609 4610 static struct ibm_struct bluetooth_driver_data = { 4611 .name = "bluetooth", 4612 .read = bluetooth_read, 4613 .write = bluetooth_write, 4614 .exit = bluetooth_exit, 4615 .shutdown = bluetooth_shutdown, 4616 }; 4617 4618 /************************************************************************* 4619 * Wan subdriver 4620 */ 4621 4622 enum { 4623 /* ACPI GWAN/SWAN bits */ 4624 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4625 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4626 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4627 0 = disable, 1 = enable */ 4628 }; 4629 4630 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4631 4632 static int wan_get_status(void) 4633 { 4634 int status; 4635 4636 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4637 if (dbg_wwanemul) 4638 return (tpacpi_wwan_emulstate) ? 4639 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4640 #endif 4641 4642 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4643 return -EIO; 4644 4645 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4646 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4647 } 4648 4649 static int wan_set_status(enum tpacpi_rfkill_state state) 4650 { 4651 int status; 4652 4653 vdbg_printk(TPACPI_DBG_RFKILL, 4654 "will attempt to %s wwan\n", 4655 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4656 4657 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4658 if (dbg_wwanemul) { 4659 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4660 return 0; 4661 } 4662 #endif 4663 4664 if (state == TPACPI_RFK_RADIO_ON) 4665 status = TP_ACPI_WANCARD_RADIOSSW 4666 | TP_ACPI_WANCARD_RESUMECTRL; 4667 else 4668 status = 0; 4669 4670 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4671 return -EIO; 4672 4673 return 0; 4674 } 4675 4676 /* sysfs wan enable ---------------------------------------------------- */ 4677 static ssize_t wan_enable_show(struct device *dev, 4678 struct device_attribute *attr, 4679 char *buf) 4680 { 4681 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4682 attr, buf); 4683 } 4684 4685 static ssize_t wan_enable_store(struct device *dev, 4686 struct device_attribute *attr, 4687 const char *buf, size_t count) 4688 { 4689 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4690 attr, buf, count); 4691 } 4692 4693 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4694 wan_enable_show, wan_enable_store); 4695 4696 /* --------------------------------------------------------------------- */ 4697 4698 static struct attribute *wan_attributes[] = { 4699 &dev_attr_wwan_enable.attr, 4700 NULL 4701 }; 4702 4703 static const struct attribute_group wan_attr_group = { 4704 .attrs = wan_attributes, 4705 }; 4706 4707 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4708 .get_status = wan_get_status, 4709 .set_status = wan_set_status, 4710 }; 4711 4712 static void wan_shutdown(void) 4713 { 4714 /* Order firmware to save current state to NVRAM */ 4715 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4716 TP_ACPI_WGSV_SAVE_STATE)) 4717 pr_notice("failed to save WWAN state to NVRAM\n"); 4718 else 4719 vdbg_printk(TPACPI_DBG_RFKILL, 4720 "WWAN state saved to NVRAM\n"); 4721 } 4722 4723 static void wan_exit(void) 4724 { 4725 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4726 &wan_attr_group); 4727 4728 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4729 4730 wan_shutdown(); 4731 } 4732 4733 static int __init wan_init(struct ibm_init_struct *iibm) 4734 { 4735 int res; 4736 int status = 0; 4737 4738 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4739 "initializing wan subdriver\n"); 4740 4741 TPACPI_ACPIHANDLE_INIT(hkey); 4742 4743 tp_features.wan = hkey_handle && 4744 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4745 4746 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4747 "wan is %s, status 0x%02x\n", 4748 str_supported(tp_features.wan), 4749 status); 4750 4751 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4752 if (dbg_wwanemul) { 4753 tp_features.wan = 1; 4754 pr_info("wwan switch emulation enabled\n"); 4755 } else 4756 #endif 4757 if (tp_features.wan && 4758 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4759 /* no wan hardware present in system */ 4760 tp_features.wan = 0; 4761 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4762 "wan hardware not installed\n"); 4763 } 4764 4765 if (!tp_features.wan) 4766 return 1; 4767 4768 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4769 &wan_tprfk_ops, 4770 RFKILL_TYPE_WWAN, 4771 TPACPI_RFK_WWAN_SW_NAME, 4772 true); 4773 if (res) 4774 return res; 4775 4776 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4777 &wan_attr_group); 4778 4779 if (res) { 4780 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4781 return res; 4782 } 4783 4784 return 0; 4785 } 4786 4787 /* procfs -------------------------------------------------------------- */ 4788 static int wan_read(struct seq_file *m) 4789 { 4790 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4791 } 4792 4793 static int wan_write(char *buf) 4794 { 4795 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4796 } 4797 4798 static struct ibm_struct wan_driver_data = { 4799 .name = "wan", 4800 .read = wan_read, 4801 .write = wan_write, 4802 .exit = wan_exit, 4803 .shutdown = wan_shutdown, 4804 }; 4805 4806 /************************************************************************* 4807 * UWB subdriver 4808 */ 4809 4810 enum { 4811 /* ACPI GUWB/SUWB bits */ 4812 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4813 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4814 }; 4815 4816 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4817 4818 static int uwb_get_status(void) 4819 { 4820 int status; 4821 4822 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4823 if (dbg_uwbemul) 4824 return (tpacpi_uwb_emulstate) ? 4825 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4826 #endif 4827 4828 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4829 return -EIO; 4830 4831 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4832 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4833 } 4834 4835 static int uwb_set_status(enum tpacpi_rfkill_state state) 4836 { 4837 int status; 4838 4839 vdbg_printk(TPACPI_DBG_RFKILL, 4840 "will attempt to %s UWB\n", 4841 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4842 4843 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4844 if (dbg_uwbemul) { 4845 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4846 return 0; 4847 } 4848 #endif 4849 4850 if (state == TPACPI_RFK_RADIO_ON) 4851 status = TP_ACPI_UWB_RADIOSSW; 4852 else 4853 status = 0; 4854 4855 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4856 return -EIO; 4857 4858 return 0; 4859 } 4860 4861 /* --------------------------------------------------------------------- */ 4862 4863 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4864 .get_status = uwb_get_status, 4865 .set_status = uwb_set_status, 4866 }; 4867 4868 static void uwb_exit(void) 4869 { 4870 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4871 } 4872 4873 static int __init uwb_init(struct ibm_init_struct *iibm) 4874 { 4875 int res; 4876 int status = 0; 4877 4878 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4879 "initializing uwb subdriver\n"); 4880 4881 TPACPI_ACPIHANDLE_INIT(hkey); 4882 4883 tp_features.uwb = hkey_handle && 4884 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4885 4886 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4887 "uwb is %s, status 0x%02x\n", 4888 str_supported(tp_features.uwb), 4889 status); 4890 4891 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4892 if (dbg_uwbemul) { 4893 tp_features.uwb = 1; 4894 pr_info("uwb switch emulation enabled\n"); 4895 } else 4896 #endif 4897 if (tp_features.uwb && 4898 !(status & TP_ACPI_UWB_HWPRESENT)) { 4899 /* no uwb hardware present in system */ 4900 tp_features.uwb = 0; 4901 dbg_printk(TPACPI_DBG_INIT, 4902 "uwb hardware not installed\n"); 4903 } 4904 4905 if (!tp_features.uwb) 4906 return 1; 4907 4908 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4909 &uwb_tprfk_ops, 4910 RFKILL_TYPE_UWB, 4911 TPACPI_RFK_UWB_SW_NAME, 4912 false); 4913 return res; 4914 } 4915 4916 static struct ibm_struct uwb_driver_data = { 4917 .name = "uwb", 4918 .exit = uwb_exit, 4919 .flags.experimental = 1, 4920 }; 4921 4922 /************************************************************************* 4923 * Video subdriver 4924 */ 4925 4926 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4927 4928 enum video_access_mode { 4929 TPACPI_VIDEO_NONE = 0, 4930 TPACPI_VIDEO_570, /* 570 */ 4931 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4932 TPACPI_VIDEO_NEW, /* all others */ 4933 }; 4934 4935 enum { /* video status flags, based on VIDEO_570 */ 4936 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4937 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4938 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4939 }; 4940 4941 enum { /* TPACPI_VIDEO_570 constants */ 4942 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4943 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4944 * video_status_flags */ 4945 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4946 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4947 }; 4948 4949 static enum video_access_mode video_supported; 4950 static int video_orig_autosw; 4951 4952 static int video_autosw_get(void); 4953 static int video_autosw_set(int enable); 4954 4955 TPACPI_HANDLE(vid, root, 4956 "\\_SB.PCI.AGP.VGA", /* 570 */ 4957 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4958 "\\_SB.PCI0.VID0", /* 770e */ 4959 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4960 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4961 "\\_SB.PCI0.AGP.VID", /* all others */ 4962 ); /* R30, R31 */ 4963 4964 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4965 4966 static int __init video_init(struct ibm_init_struct *iibm) 4967 { 4968 int ivga; 4969 4970 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4971 4972 TPACPI_ACPIHANDLE_INIT(vid); 4973 if (tpacpi_is_ibm()) 4974 TPACPI_ACPIHANDLE_INIT(vid2); 4975 4976 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4977 /* G41, assume IVGA doesn't change */ 4978 vid_handle = vid2_handle; 4979 4980 if (!vid_handle) 4981 /* video switching not supported on R30, R31 */ 4982 video_supported = TPACPI_VIDEO_NONE; 4983 else if (tpacpi_is_ibm() && 4984 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4985 /* 570 */ 4986 video_supported = TPACPI_VIDEO_570; 4987 else if (tpacpi_is_ibm() && 4988 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4989 /* 600e/x, 770e, 770x */ 4990 video_supported = TPACPI_VIDEO_770; 4991 else 4992 /* all others */ 4993 video_supported = TPACPI_VIDEO_NEW; 4994 4995 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4996 str_supported(video_supported != TPACPI_VIDEO_NONE), 4997 video_supported); 4998 4999 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 5000 } 5001 5002 static void video_exit(void) 5003 { 5004 dbg_printk(TPACPI_DBG_EXIT, 5005 "restoring original video autoswitch mode\n"); 5006 if (video_autosw_set(video_orig_autosw)) 5007 pr_err("error while trying to restore original video autoswitch mode\n"); 5008 } 5009 5010 static int video_outputsw_get(void) 5011 { 5012 int status = 0; 5013 int i; 5014 5015 switch (video_supported) { 5016 case TPACPI_VIDEO_570: 5017 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5018 TP_ACPI_VIDEO_570_PHSCMD)) 5019 return -EIO; 5020 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5021 break; 5022 case TPACPI_VIDEO_770: 5023 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5024 return -EIO; 5025 if (i) 5026 status |= TP_ACPI_VIDEO_S_LCD; 5027 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5028 return -EIO; 5029 if (i) 5030 status |= TP_ACPI_VIDEO_S_CRT; 5031 break; 5032 case TPACPI_VIDEO_NEW: 5033 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5034 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5035 return -EIO; 5036 if (i) 5037 status |= TP_ACPI_VIDEO_S_CRT; 5038 5039 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5040 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5041 return -EIO; 5042 if (i) 5043 status |= TP_ACPI_VIDEO_S_LCD; 5044 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5045 return -EIO; 5046 if (i) 5047 status |= TP_ACPI_VIDEO_S_DVI; 5048 break; 5049 default: 5050 return -ENOSYS; 5051 } 5052 5053 return status; 5054 } 5055 5056 static int video_outputsw_set(int status) 5057 { 5058 int autosw; 5059 int res = 0; 5060 5061 switch (video_supported) { 5062 case TPACPI_VIDEO_570: 5063 res = acpi_evalf(NULL, NULL, 5064 "\\_SB.PHS2", "vdd", 5065 TP_ACPI_VIDEO_570_PHS2CMD, 5066 status | TP_ACPI_VIDEO_570_PHS2SET); 5067 break; 5068 case TPACPI_VIDEO_770: 5069 autosw = video_autosw_get(); 5070 if (autosw < 0) 5071 return autosw; 5072 5073 res = video_autosw_set(1); 5074 if (res) 5075 return res; 5076 res = acpi_evalf(vid_handle, NULL, 5077 "ASWT", "vdd", status * 0x100, 0); 5078 if (!autosw && video_autosw_set(autosw)) { 5079 pr_err("video auto-switch left enabled due to error\n"); 5080 return -EIO; 5081 } 5082 break; 5083 case TPACPI_VIDEO_NEW: 5084 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5085 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5086 break; 5087 default: 5088 return -ENOSYS; 5089 } 5090 5091 return (res) ? 0 : -EIO; 5092 } 5093 5094 static int video_autosw_get(void) 5095 { 5096 int autosw = 0; 5097 5098 switch (video_supported) { 5099 case TPACPI_VIDEO_570: 5100 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5101 return -EIO; 5102 break; 5103 case TPACPI_VIDEO_770: 5104 case TPACPI_VIDEO_NEW: 5105 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5106 return -EIO; 5107 break; 5108 default: 5109 return -ENOSYS; 5110 } 5111 5112 return autosw & 1; 5113 } 5114 5115 static int video_autosw_set(int enable) 5116 { 5117 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5118 return -EIO; 5119 return 0; 5120 } 5121 5122 static int video_outputsw_cycle(void) 5123 { 5124 int autosw = video_autosw_get(); 5125 int res; 5126 5127 if (autosw < 0) 5128 return autosw; 5129 5130 switch (video_supported) { 5131 case TPACPI_VIDEO_570: 5132 res = video_autosw_set(1); 5133 if (res) 5134 return res; 5135 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5136 break; 5137 case TPACPI_VIDEO_770: 5138 case TPACPI_VIDEO_NEW: 5139 res = video_autosw_set(1); 5140 if (res) 5141 return res; 5142 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5143 break; 5144 default: 5145 return -ENOSYS; 5146 } 5147 if (!autosw && video_autosw_set(autosw)) { 5148 pr_err("video auto-switch left enabled due to error\n"); 5149 return -EIO; 5150 } 5151 5152 return (res) ? 0 : -EIO; 5153 } 5154 5155 static int video_expand_toggle(void) 5156 { 5157 switch (video_supported) { 5158 case TPACPI_VIDEO_570: 5159 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5160 0 : -EIO; 5161 case TPACPI_VIDEO_770: 5162 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5163 0 : -EIO; 5164 case TPACPI_VIDEO_NEW: 5165 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5166 0 : -EIO; 5167 default: 5168 return -ENOSYS; 5169 } 5170 /* not reached */ 5171 } 5172 5173 static int video_read(struct seq_file *m) 5174 { 5175 int status, autosw; 5176 5177 if (video_supported == TPACPI_VIDEO_NONE) { 5178 seq_printf(m, "status:\t\tnot supported\n"); 5179 return 0; 5180 } 5181 5182 /* Even reads can crash X.org, so... */ 5183 if (!capable(CAP_SYS_ADMIN)) 5184 return -EPERM; 5185 5186 status = video_outputsw_get(); 5187 if (status < 0) 5188 return status; 5189 5190 autosw = video_autosw_get(); 5191 if (autosw < 0) 5192 return autosw; 5193 5194 seq_printf(m, "status:\t\tsupported\n"); 5195 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5196 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5197 if (video_supported == TPACPI_VIDEO_NEW) 5198 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5199 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5200 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5201 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5202 if (video_supported == TPACPI_VIDEO_NEW) 5203 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5204 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5205 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5206 5207 return 0; 5208 } 5209 5210 static int video_write(char *buf) 5211 { 5212 char *cmd; 5213 int enable, disable, status; 5214 int res; 5215 5216 if (video_supported == TPACPI_VIDEO_NONE) 5217 return -ENODEV; 5218 5219 /* Even reads can crash X.org, let alone writes... */ 5220 if (!capable(CAP_SYS_ADMIN)) 5221 return -EPERM; 5222 5223 enable = 0; 5224 disable = 0; 5225 5226 while ((cmd = strsep(&buf, ","))) { 5227 if (strlencmp(cmd, "lcd_enable") == 0) { 5228 enable |= TP_ACPI_VIDEO_S_LCD; 5229 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5230 disable |= TP_ACPI_VIDEO_S_LCD; 5231 } else if (strlencmp(cmd, "crt_enable") == 0) { 5232 enable |= TP_ACPI_VIDEO_S_CRT; 5233 } else if (strlencmp(cmd, "crt_disable") == 0) { 5234 disable |= TP_ACPI_VIDEO_S_CRT; 5235 } else if (video_supported == TPACPI_VIDEO_NEW && 5236 strlencmp(cmd, "dvi_enable") == 0) { 5237 enable |= TP_ACPI_VIDEO_S_DVI; 5238 } else if (video_supported == TPACPI_VIDEO_NEW && 5239 strlencmp(cmd, "dvi_disable") == 0) { 5240 disable |= TP_ACPI_VIDEO_S_DVI; 5241 } else if (strlencmp(cmd, "auto_enable") == 0) { 5242 res = video_autosw_set(1); 5243 if (res) 5244 return res; 5245 } else if (strlencmp(cmd, "auto_disable") == 0) { 5246 res = video_autosw_set(0); 5247 if (res) 5248 return res; 5249 } else if (strlencmp(cmd, "video_switch") == 0) { 5250 res = video_outputsw_cycle(); 5251 if (res) 5252 return res; 5253 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5254 res = video_expand_toggle(); 5255 if (res) 5256 return res; 5257 } else 5258 return -EINVAL; 5259 } 5260 5261 if (enable || disable) { 5262 status = video_outputsw_get(); 5263 if (status < 0) 5264 return status; 5265 res = video_outputsw_set((status & ~disable) | enable); 5266 if (res) 5267 return res; 5268 } 5269 5270 return 0; 5271 } 5272 5273 static struct ibm_struct video_driver_data = { 5274 .name = "video", 5275 .read = video_read, 5276 .write = video_write, 5277 .exit = video_exit, 5278 }; 5279 5280 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5281 5282 /************************************************************************* 5283 * Keyboard backlight subdriver 5284 */ 5285 5286 static enum led_brightness kbdlight_brightness; 5287 static DEFINE_MUTEX(kbdlight_mutex); 5288 5289 static int kbdlight_set_level(int level) 5290 { 5291 int ret = 0; 5292 5293 if (!hkey_handle) 5294 return -ENXIO; 5295 5296 mutex_lock(&kbdlight_mutex); 5297 5298 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5299 ret = -EIO; 5300 else 5301 kbdlight_brightness = level; 5302 5303 mutex_unlock(&kbdlight_mutex); 5304 5305 return ret; 5306 } 5307 5308 static int kbdlight_get_level(void) 5309 { 5310 int status = 0; 5311 5312 if (!hkey_handle) 5313 return -ENXIO; 5314 5315 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5316 return -EIO; 5317 5318 if (status < 0) 5319 return status; 5320 5321 return status & 0x3; 5322 } 5323 5324 static bool kbdlight_is_supported(void) 5325 { 5326 int status = 0; 5327 5328 if (!hkey_handle) 5329 return false; 5330 5331 if (!acpi_has_method(hkey_handle, "MLCG")) { 5332 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5333 return false; 5334 } 5335 5336 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5337 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5338 return false; 5339 } 5340 5341 if (status < 0) { 5342 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5343 return false; 5344 } 5345 5346 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5347 /* 5348 * Guessed test for keyboard backlight: 5349 * 5350 * Machines with backlight keyboard return: 5351 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5352 * b110100010010000000XX - ThinkPad x230 5353 * b010100000010000000XX - ThinkPad x240 5354 * b010100000010000000XX - ThinkPad W541 5355 * (XX is current backlight level) 5356 * 5357 * Machines without backlight keyboard return: 5358 * b10100001000000000000 - ThinkPad x230 5359 * b10110001000000000000 - ThinkPad E430 5360 * b00000000000000000000 - ThinkPad E450 5361 * 5362 * Candidate BITs for detection test (XOR): 5363 * b01000000001000000000 5364 * ^ 5365 */ 5366 return status & BIT(9); 5367 } 5368 5369 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5370 enum led_brightness brightness) 5371 { 5372 return kbdlight_set_level(brightness); 5373 } 5374 5375 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5376 { 5377 int level; 5378 5379 level = kbdlight_get_level(); 5380 if (level < 0) 5381 return 0; 5382 5383 return level; 5384 } 5385 5386 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5387 .led_classdev = { 5388 .name = "tpacpi::kbd_backlight", 5389 .max_brightness = 2, 5390 .flags = LED_BRIGHT_HW_CHANGED, 5391 .brightness_set_blocking = &kbdlight_sysfs_set, 5392 .brightness_get = &kbdlight_sysfs_get, 5393 } 5394 }; 5395 5396 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5397 { 5398 int rc; 5399 5400 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5401 5402 TPACPI_ACPIHANDLE_INIT(hkey); 5403 5404 if (!kbdlight_is_supported()) { 5405 tp_features.kbdlight = 0; 5406 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5407 return 1; 5408 } 5409 5410 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5411 tp_features.kbdlight = 1; 5412 5413 rc = led_classdev_register(&tpacpi_pdev->dev, 5414 &tpacpi_led_kbdlight.led_classdev); 5415 if (rc < 0) { 5416 tp_features.kbdlight = 0; 5417 return rc; 5418 } 5419 5420 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5421 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5422 return 0; 5423 } 5424 5425 static void kbdlight_exit(void) 5426 { 5427 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5428 } 5429 5430 static int kbdlight_set_level_and_update(int level) 5431 { 5432 int ret; 5433 struct led_classdev *led_cdev; 5434 5435 ret = kbdlight_set_level(level); 5436 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5437 5438 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5439 led_cdev->brightness = level; 5440 5441 return ret; 5442 } 5443 5444 static int kbdlight_read(struct seq_file *m) 5445 { 5446 int level; 5447 5448 if (!tp_features.kbdlight) { 5449 seq_printf(m, "status:\t\tnot supported\n"); 5450 } else { 5451 level = kbdlight_get_level(); 5452 if (level < 0) 5453 seq_printf(m, "status:\t\terror %d\n", level); 5454 else 5455 seq_printf(m, "status:\t\t%d\n", level); 5456 seq_printf(m, "commands:\t0, 1, 2\n"); 5457 } 5458 5459 return 0; 5460 } 5461 5462 static int kbdlight_write(char *buf) 5463 { 5464 char *cmd; 5465 int res, level = -EINVAL; 5466 5467 if (!tp_features.kbdlight) 5468 return -ENODEV; 5469 5470 while ((cmd = strsep(&buf, ","))) { 5471 res = kstrtoint(cmd, 10, &level); 5472 if (res < 0) 5473 return res; 5474 } 5475 5476 if (level >= 3 || level < 0) 5477 return -EINVAL; 5478 5479 return kbdlight_set_level_and_update(level); 5480 } 5481 5482 static void kbdlight_suspend(void) 5483 { 5484 struct led_classdev *led_cdev; 5485 5486 if (!tp_features.kbdlight) 5487 return; 5488 5489 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5490 led_update_brightness(led_cdev); 5491 led_classdev_suspend(led_cdev); 5492 } 5493 5494 static void kbdlight_resume(void) 5495 { 5496 if (!tp_features.kbdlight) 5497 return; 5498 5499 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5500 } 5501 5502 static struct ibm_struct kbdlight_driver_data = { 5503 .name = "kbdlight", 5504 .read = kbdlight_read, 5505 .write = kbdlight_write, 5506 .suspend = kbdlight_suspend, 5507 .resume = kbdlight_resume, 5508 .exit = kbdlight_exit, 5509 }; 5510 5511 /************************************************************************* 5512 * Light (thinklight) subdriver 5513 */ 5514 5515 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5516 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5517 5518 static int light_get_status(void) 5519 { 5520 int status = 0; 5521 5522 if (tp_features.light_status) { 5523 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5524 return -EIO; 5525 return (!!status); 5526 } 5527 5528 return -ENXIO; 5529 } 5530 5531 static int light_set_status(int status) 5532 { 5533 int rc; 5534 5535 if (tp_features.light) { 5536 if (cmos_handle) { 5537 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5538 (status) ? 5539 TP_CMOS_THINKLIGHT_ON : 5540 TP_CMOS_THINKLIGHT_OFF); 5541 } else { 5542 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5543 (status) ? 1 : 0); 5544 } 5545 return (rc) ? 0 : -EIO; 5546 } 5547 5548 return -ENXIO; 5549 } 5550 5551 static int light_sysfs_set(struct led_classdev *led_cdev, 5552 enum led_brightness brightness) 5553 { 5554 return light_set_status((brightness != LED_OFF) ? 5555 TPACPI_LED_ON : TPACPI_LED_OFF); 5556 } 5557 5558 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5559 { 5560 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5561 } 5562 5563 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5564 .led_classdev = { 5565 .name = "tpacpi::thinklight", 5566 .brightness_set_blocking = &light_sysfs_set, 5567 .brightness_get = &light_sysfs_get, 5568 } 5569 }; 5570 5571 static int __init light_init(struct ibm_init_struct *iibm) 5572 { 5573 int rc; 5574 5575 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5576 5577 if (tpacpi_is_ibm()) { 5578 TPACPI_ACPIHANDLE_INIT(ledb); 5579 TPACPI_ACPIHANDLE_INIT(lght); 5580 } 5581 TPACPI_ACPIHANDLE_INIT(cmos); 5582 5583 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5584 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5585 5586 if (tp_features.light) 5587 /* light status not supported on 5588 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5589 tp_features.light_status = 5590 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5591 5592 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5593 str_supported(tp_features.light), 5594 str_supported(tp_features.light_status)); 5595 5596 if (!tp_features.light) 5597 return 1; 5598 5599 rc = led_classdev_register(&tpacpi_pdev->dev, 5600 &tpacpi_led_thinklight.led_classdev); 5601 5602 if (rc < 0) { 5603 tp_features.light = 0; 5604 tp_features.light_status = 0; 5605 } else { 5606 rc = 0; 5607 } 5608 5609 return rc; 5610 } 5611 5612 static void light_exit(void) 5613 { 5614 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5615 } 5616 5617 static int light_read(struct seq_file *m) 5618 { 5619 int status; 5620 5621 if (!tp_features.light) { 5622 seq_printf(m, "status:\t\tnot supported\n"); 5623 } else if (!tp_features.light_status) { 5624 seq_printf(m, "status:\t\tunknown\n"); 5625 seq_printf(m, "commands:\ton, off\n"); 5626 } else { 5627 status = light_get_status(); 5628 if (status < 0) 5629 return status; 5630 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5631 seq_printf(m, "commands:\ton, off\n"); 5632 } 5633 5634 return 0; 5635 } 5636 5637 static int light_write(char *buf) 5638 { 5639 char *cmd; 5640 int newstatus = 0; 5641 5642 if (!tp_features.light) 5643 return -ENODEV; 5644 5645 while ((cmd = strsep(&buf, ","))) { 5646 if (strlencmp(cmd, "on") == 0) { 5647 newstatus = 1; 5648 } else if (strlencmp(cmd, "off") == 0) { 5649 newstatus = 0; 5650 } else 5651 return -EINVAL; 5652 } 5653 5654 return light_set_status(newstatus); 5655 } 5656 5657 static struct ibm_struct light_driver_data = { 5658 .name = "light", 5659 .read = light_read, 5660 .write = light_write, 5661 .exit = light_exit, 5662 }; 5663 5664 /************************************************************************* 5665 * CMOS subdriver 5666 */ 5667 5668 /* sysfs cmos_command -------------------------------------------------- */ 5669 static ssize_t cmos_command_store(struct device *dev, 5670 struct device_attribute *attr, 5671 const char *buf, size_t count) 5672 { 5673 unsigned long cmos_cmd; 5674 int res; 5675 5676 if (parse_strtoul(buf, 21, &cmos_cmd)) 5677 return -EINVAL; 5678 5679 res = issue_thinkpad_cmos_command(cmos_cmd); 5680 return (res) ? res : count; 5681 } 5682 5683 static DEVICE_ATTR_WO(cmos_command); 5684 5685 /* --------------------------------------------------------------------- */ 5686 5687 static int __init cmos_init(struct ibm_init_struct *iibm) 5688 { 5689 int res; 5690 5691 vdbg_printk(TPACPI_DBG_INIT, 5692 "initializing cmos commands subdriver\n"); 5693 5694 TPACPI_ACPIHANDLE_INIT(cmos); 5695 5696 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5697 str_supported(cmos_handle != NULL)); 5698 5699 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5700 if (res) 5701 return res; 5702 5703 return (cmos_handle) ? 0 : 1; 5704 } 5705 5706 static void cmos_exit(void) 5707 { 5708 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5709 } 5710 5711 static int cmos_read(struct seq_file *m) 5712 { 5713 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5714 R30, R31, T20-22, X20-21 */ 5715 if (!cmos_handle) 5716 seq_printf(m, "status:\t\tnot supported\n"); 5717 else { 5718 seq_printf(m, "status:\t\tsupported\n"); 5719 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5720 } 5721 5722 return 0; 5723 } 5724 5725 static int cmos_write(char *buf) 5726 { 5727 char *cmd; 5728 int cmos_cmd, res; 5729 5730 while ((cmd = strsep(&buf, ","))) { 5731 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5732 cmos_cmd >= 0 && cmos_cmd <= 21) { 5733 /* cmos_cmd set */ 5734 } else 5735 return -EINVAL; 5736 5737 res = issue_thinkpad_cmos_command(cmos_cmd); 5738 if (res) 5739 return res; 5740 } 5741 5742 return 0; 5743 } 5744 5745 static struct ibm_struct cmos_driver_data = { 5746 .name = "cmos", 5747 .read = cmos_read, 5748 .write = cmos_write, 5749 .exit = cmos_exit, 5750 }; 5751 5752 /************************************************************************* 5753 * LED subdriver 5754 */ 5755 5756 enum led_access_mode { 5757 TPACPI_LED_NONE = 0, 5758 TPACPI_LED_570, /* 570 */ 5759 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5760 TPACPI_LED_NEW, /* all others */ 5761 }; 5762 5763 enum { /* For TPACPI_LED_OLD */ 5764 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5765 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5766 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5767 }; 5768 5769 static enum led_access_mode led_supported; 5770 5771 static acpi_handle led_handle; 5772 5773 #define TPACPI_LED_NUMLEDS 16 5774 static struct tpacpi_led_classdev *tpacpi_leds; 5775 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5776 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5777 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5778 "tpacpi::power", 5779 "tpacpi:orange:batt", 5780 "tpacpi:green:batt", 5781 "tpacpi::dock_active", 5782 "tpacpi::bay_active", 5783 "tpacpi::dock_batt", 5784 "tpacpi::unknown_led", 5785 "tpacpi::standby", 5786 "tpacpi::dock_status1", 5787 "tpacpi::dock_status2", 5788 "tpacpi::unknown_led2", 5789 "tpacpi::unknown_led3", 5790 "tpacpi::thinkvantage", 5791 }; 5792 #define TPACPI_SAFE_LEDS 0x1081U 5793 5794 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5795 { 5796 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5797 return false; 5798 #else 5799 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5800 #endif 5801 } 5802 5803 static int led_get_status(const unsigned int led) 5804 { 5805 int status; 5806 enum led_status_t led_s; 5807 5808 switch (led_supported) { 5809 case TPACPI_LED_570: 5810 if (!acpi_evalf(ec_handle, 5811 &status, "GLED", "dd", 1 << led)) 5812 return -EIO; 5813 led_s = (status == 0) ? 5814 TPACPI_LED_OFF : 5815 ((status == 1) ? 5816 TPACPI_LED_ON : 5817 TPACPI_LED_BLINK); 5818 tpacpi_led_state_cache[led] = led_s; 5819 return led_s; 5820 default: 5821 return -ENXIO; 5822 } 5823 5824 /* not reached */ 5825 } 5826 5827 static int led_set_status(const unsigned int led, 5828 const enum led_status_t ledstatus) 5829 { 5830 /* off, on, blink. Index is led_status_t */ 5831 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5832 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5833 5834 int rc = 0; 5835 5836 switch (led_supported) { 5837 case TPACPI_LED_570: 5838 /* 570 */ 5839 if (unlikely(led > 7)) 5840 return -EINVAL; 5841 if (unlikely(tpacpi_is_led_restricted(led))) 5842 return -EPERM; 5843 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5844 (1 << led), led_sled_arg1[ledstatus])) 5845 return -EIO; 5846 break; 5847 case TPACPI_LED_OLD: 5848 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5849 if (unlikely(led > 7)) 5850 return -EINVAL; 5851 if (unlikely(tpacpi_is_led_restricted(led))) 5852 return -EPERM; 5853 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5854 if (rc >= 0) 5855 rc = ec_write(TPACPI_LED_EC_HLBL, 5856 (ledstatus == TPACPI_LED_BLINK) << led); 5857 if (rc >= 0) 5858 rc = ec_write(TPACPI_LED_EC_HLCL, 5859 (ledstatus != TPACPI_LED_OFF) << led); 5860 break; 5861 case TPACPI_LED_NEW: 5862 /* all others */ 5863 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5864 return -EINVAL; 5865 if (unlikely(tpacpi_is_led_restricted(led))) 5866 return -EPERM; 5867 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5868 led, led_led_arg1[ledstatus])) 5869 return -EIO; 5870 break; 5871 default: 5872 return -ENXIO; 5873 } 5874 5875 if (!rc) 5876 tpacpi_led_state_cache[led] = ledstatus; 5877 5878 return rc; 5879 } 5880 5881 static int led_sysfs_set(struct led_classdev *led_cdev, 5882 enum led_brightness brightness) 5883 { 5884 struct tpacpi_led_classdev *data = container_of(led_cdev, 5885 struct tpacpi_led_classdev, led_classdev); 5886 enum led_status_t new_state; 5887 5888 if (brightness == LED_OFF) 5889 new_state = TPACPI_LED_OFF; 5890 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5891 new_state = TPACPI_LED_ON; 5892 else 5893 new_state = TPACPI_LED_BLINK; 5894 5895 return led_set_status(data->led, new_state); 5896 } 5897 5898 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5899 unsigned long *delay_on, unsigned long *delay_off) 5900 { 5901 struct tpacpi_led_classdev *data = container_of(led_cdev, 5902 struct tpacpi_led_classdev, led_classdev); 5903 5904 /* Can we choose the flash rate? */ 5905 if (*delay_on == 0 && *delay_off == 0) { 5906 /* yes. set them to the hardware blink rate (1 Hz) */ 5907 *delay_on = 500; /* ms */ 5908 *delay_off = 500; /* ms */ 5909 } else if ((*delay_on != 500) || (*delay_off != 500)) 5910 return -EINVAL; 5911 5912 return led_set_status(data->led, TPACPI_LED_BLINK); 5913 } 5914 5915 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5916 { 5917 int rc; 5918 5919 struct tpacpi_led_classdev *data = container_of(led_cdev, 5920 struct tpacpi_led_classdev, led_classdev); 5921 5922 rc = led_get_status(data->led); 5923 5924 if (rc == TPACPI_LED_OFF || rc < 0) 5925 rc = LED_OFF; /* no error handling in led class :( */ 5926 else 5927 rc = LED_FULL; 5928 5929 return rc; 5930 } 5931 5932 static void led_exit(void) 5933 { 5934 unsigned int i; 5935 5936 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5937 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5938 5939 kfree(tpacpi_leds); 5940 } 5941 5942 static int __init tpacpi_init_led(unsigned int led) 5943 { 5944 /* LEDs with no name don't get registered */ 5945 if (!tpacpi_led_names[led]) 5946 return 0; 5947 5948 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5949 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5950 if (led_supported == TPACPI_LED_570) 5951 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5952 5953 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5954 tpacpi_leds[led].led = led; 5955 5956 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5957 } 5958 5959 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5960 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5961 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5962 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5963 5964 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5965 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5966 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5967 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5968 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5969 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5970 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5971 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5972 5973 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5974 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5975 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5976 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5977 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5978 5979 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5980 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5981 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5982 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5983 5984 /* (1) - may have excess leds enabled on MSB */ 5985 5986 /* Defaults (order matters, keep last, don't reorder!) */ 5987 { /* Lenovo */ 5988 .vendor = PCI_VENDOR_ID_LENOVO, 5989 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5990 .quirks = 0x1fffU, 5991 }, 5992 { /* IBM ThinkPads with no EC version string */ 5993 .vendor = PCI_VENDOR_ID_IBM, 5994 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5995 .quirks = 0x00ffU, 5996 }, 5997 { /* IBM ThinkPads with EC version string */ 5998 .vendor = PCI_VENDOR_ID_IBM, 5999 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6000 .quirks = 0x00bfU, 6001 }, 6002 }; 6003 6004 static enum led_access_mode __init led_init_detect_mode(void) 6005 { 6006 acpi_status status; 6007 6008 if (tpacpi_is_ibm()) { 6009 /* 570 */ 6010 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6011 if (ACPI_SUCCESS(status)) 6012 return TPACPI_LED_570; 6013 6014 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6015 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6016 if (ACPI_SUCCESS(status)) 6017 return TPACPI_LED_OLD; 6018 } 6019 6020 /* most others */ 6021 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6022 if (ACPI_SUCCESS(status)) 6023 return TPACPI_LED_NEW; 6024 6025 /* R30, R31, and unknown firmwares */ 6026 led_handle = NULL; 6027 return TPACPI_LED_NONE; 6028 } 6029 6030 static int __init led_init(struct ibm_init_struct *iibm) 6031 { 6032 unsigned int i; 6033 int rc; 6034 unsigned long useful_leds; 6035 6036 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6037 6038 led_supported = led_init_detect_mode(); 6039 6040 if (led_supported != TPACPI_LED_NONE) { 6041 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6042 ARRAY_SIZE(led_useful_qtable)); 6043 6044 if (!useful_leds) { 6045 led_handle = NULL; 6046 led_supported = TPACPI_LED_NONE; 6047 } 6048 } 6049 6050 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6051 str_supported(led_supported), led_supported); 6052 6053 if (led_supported == TPACPI_LED_NONE) 6054 return 1; 6055 6056 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6057 GFP_KERNEL); 6058 if (!tpacpi_leds) { 6059 pr_err("Out of memory for LED data\n"); 6060 return -ENOMEM; 6061 } 6062 6063 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6064 tpacpi_leds[i].led = -1; 6065 6066 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6067 rc = tpacpi_init_led(i); 6068 if (rc < 0) { 6069 led_exit(); 6070 return rc; 6071 } 6072 } 6073 } 6074 6075 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6076 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6077 #endif 6078 return 0; 6079 } 6080 6081 #define str_led_status(s) \ 6082 ((s) == TPACPI_LED_OFF ? "off" : \ 6083 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6084 6085 static int led_read(struct seq_file *m) 6086 { 6087 if (!led_supported) { 6088 seq_printf(m, "status:\t\tnot supported\n"); 6089 return 0; 6090 } 6091 seq_printf(m, "status:\t\tsupported\n"); 6092 6093 if (led_supported == TPACPI_LED_570) { 6094 /* 570 */ 6095 int i, status; 6096 for (i = 0; i < 8; i++) { 6097 status = led_get_status(i); 6098 if (status < 0) 6099 return -EIO; 6100 seq_printf(m, "%d:\t\t%s\n", 6101 i, str_led_status(status)); 6102 } 6103 } 6104 6105 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6106 6107 return 0; 6108 } 6109 6110 static int led_write(char *buf) 6111 { 6112 char *cmd; 6113 int led, rc; 6114 enum led_status_t s; 6115 6116 if (!led_supported) 6117 return -ENODEV; 6118 6119 while ((cmd = strsep(&buf, ","))) { 6120 if (sscanf(cmd, "%d", &led) != 1) 6121 return -EINVAL; 6122 6123 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6124 return -ENODEV; 6125 6126 if (tpacpi_leds[led].led < 0) 6127 return -ENODEV; 6128 6129 if (strstr(cmd, "off")) { 6130 s = TPACPI_LED_OFF; 6131 } else if (strstr(cmd, "on")) { 6132 s = TPACPI_LED_ON; 6133 } else if (strstr(cmd, "blink")) { 6134 s = TPACPI_LED_BLINK; 6135 } else { 6136 return -EINVAL; 6137 } 6138 6139 rc = led_set_status(led, s); 6140 if (rc < 0) 6141 return rc; 6142 } 6143 6144 return 0; 6145 } 6146 6147 static struct ibm_struct led_driver_data = { 6148 .name = "led", 6149 .read = led_read, 6150 .write = led_write, 6151 .exit = led_exit, 6152 }; 6153 6154 /************************************************************************* 6155 * Beep subdriver 6156 */ 6157 6158 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6159 6160 #define TPACPI_BEEP_Q1 0x0001 6161 6162 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6163 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6164 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6165 }; 6166 6167 static int __init beep_init(struct ibm_init_struct *iibm) 6168 { 6169 unsigned long quirks; 6170 6171 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6172 6173 TPACPI_ACPIHANDLE_INIT(beep); 6174 6175 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6176 str_supported(beep_handle != NULL)); 6177 6178 quirks = tpacpi_check_quirks(beep_quirk_table, 6179 ARRAY_SIZE(beep_quirk_table)); 6180 6181 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6182 6183 return (beep_handle) ? 0 : 1; 6184 } 6185 6186 static int beep_read(struct seq_file *m) 6187 { 6188 if (!beep_handle) 6189 seq_printf(m, "status:\t\tnot supported\n"); 6190 else { 6191 seq_printf(m, "status:\t\tsupported\n"); 6192 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6193 } 6194 6195 return 0; 6196 } 6197 6198 static int beep_write(char *buf) 6199 { 6200 char *cmd; 6201 int beep_cmd; 6202 6203 if (!beep_handle) 6204 return -ENODEV; 6205 6206 while ((cmd = strsep(&buf, ","))) { 6207 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6208 beep_cmd >= 0 && beep_cmd <= 17) { 6209 /* beep_cmd set */ 6210 } else 6211 return -EINVAL; 6212 if (tp_features.beep_needs_two_args) { 6213 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6214 beep_cmd, 0)) 6215 return -EIO; 6216 } else { 6217 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6218 beep_cmd)) 6219 return -EIO; 6220 } 6221 } 6222 6223 return 0; 6224 } 6225 6226 static struct ibm_struct beep_driver_data = { 6227 .name = "beep", 6228 .read = beep_read, 6229 .write = beep_write, 6230 }; 6231 6232 /************************************************************************* 6233 * Thermal subdriver 6234 */ 6235 6236 enum thermal_access_mode { 6237 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6238 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6239 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6240 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6241 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6242 }; 6243 6244 enum { /* TPACPI_THERMAL_TPEC_* */ 6245 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6246 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6247 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6248 6249 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6250 }; 6251 6252 6253 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6254 struct ibm_thermal_sensors_struct { 6255 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6256 }; 6257 6258 static enum thermal_access_mode thermal_read_mode; 6259 6260 /* idx is zero-based */ 6261 static int thermal_get_sensor(int idx, s32 *value) 6262 { 6263 int t; 6264 s8 tmp; 6265 char tmpi[5]; 6266 6267 t = TP_EC_THERMAL_TMP0; 6268 6269 switch (thermal_read_mode) { 6270 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6271 case TPACPI_THERMAL_TPEC_16: 6272 if (idx >= 8 && idx <= 15) { 6273 t = TP_EC_THERMAL_TMP8; 6274 idx -= 8; 6275 } 6276 #endif 6277 fallthrough; 6278 case TPACPI_THERMAL_TPEC_8: 6279 if (idx <= 7) { 6280 if (!acpi_ec_read(t + idx, &tmp)) 6281 return -EIO; 6282 *value = tmp * 1000; 6283 return 0; 6284 } 6285 break; 6286 6287 case TPACPI_THERMAL_ACPI_UPDT: 6288 if (idx <= 7) { 6289 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6290 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6291 return -EIO; 6292 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6293 return -EIO; 6294 *value = (t - 2732) * 100; 6295 return 0; 6296 } 6297 break; 6298 6299 case TPACPI_THERMAL_ACPI_TMP07: 6300 if (idx <= 7) { 6301 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6302 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6303 return -EIO; 6304 if (t > 127 || t < -127) 6305 t = TP_EC_THERMAL_TMP_NA; 6306 *value = t * 1000; 6307 return 0; 6308 } 6309 break; 6310 6311 case TPACPI_THERMAL_NONE: 6312 default: 6313 return -ENOSYS; 6314 } 6315 6316 return -EINVAL; 6317 } 6318 6319 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6320 { 6321 int res, i; 6322 int n; 6323 6324 n = 8; 6325 i = 0; 6326 6327 if (!s) 6328 return -EINVAL; 6329 6330 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6331 n = 16; 6332 6333 for (i = 0 ; i < n; i++) { 6334 res = thermal_get_sensor(i, &s->temp[i]); 6335 if (res) 6336 return res; 6337 } 6338 6339 return n; 6340 } 6341 6342 static void thermal_dump_all_sensors(void) 6343 { 6344 int n, i; 6345 struct ibm_thermal_sensors_struct t; 6346 6347 n = thermal_get_sensors(&t); 6348 if (n <= 0) 6349 return; 6350 6351 pr_notice("temperatures (Celsius):"); 6352 6353 for (i = 0; i < n; i++) { 6354 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6355 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6356 else 6357 pr_cont(" N/A"); 6358 } 6359 6360 pr_cont("\n"); 6361 } 6362 6363 /* sysfs temp##_input -------------------------------------------------- */ 6364 6365 static ssize_t thermal_temp_input_show(struct device *dev, 6366 struct device_attribute *attr, 6367 char *buf) 6368 { 6369 struct sensor_device_attribute *sensor_attr = 6370 to_sensor_dev_attr(attr); 6371 int idx = sensor_attr->index; 6372 s32 value; 6373 int res; 6374 6375 res = thermal_get_sensor(idx, &value); 6376 if (res) 6377 return res; 6378 if (value == TPACPI_THERMAL_SENSOR_NA) 6379 return -ENXIO; 6380 6381 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6382 } 6383 6384 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6385 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6386 thermal_temp_input_show, NULL, _idxB) 6387 6388 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6389 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6390 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6391 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6392 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6393 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6394 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6395 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6396 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6397 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6398 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6399 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6400 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6401 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6402 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6403 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6404 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6405 }; 6406 6407 #define THERMAL_ATTRS(X) \ 6408 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6409 6410 static struct attribute *thermal_temp_input_attr[] = { 6411 THERMAL_ATTRS(8), 6412 THERMAL_ATTRS(9), 6413 THERMAL_ATTRS(10), 6414 THERMAL_ATTRS(11), 6415 THERMAL_ATTRS(12), 6416 THERMAL_ATTRS(13), 6417 THERMAL_ATTRS(14), 6418 THERMAL_ATTRS(15), 6419 THERMAL_ATTRS(0), 6420 THERMAL_ATTRS(1), 6421 THERMAL_ATTRS(2), 6422 THERMAL_ATTRS(3), 6423 THERMAL_ATTRS(4), 6424 THERMAL_ATTRS(5), 6425 THERMAL_ATTRS(6), 6426 THERMAL_ATTRS(7), 6427 NULL 6428 }; 6429 6430 static const struct attribute_group thermal_temp_input16_group = { 6431 .attrs = thermal_temp_input_attr 6432 }; 6433 6434 static const struct attribute_group thermal_temp_input8_group = { 6435 .attrs = &thermal_temp_input_attr[8] 6436 }; 6437 6438 #undef THERMAL_SENSOR_ATTR_TEMP 6439 #undef THERMAL_ATTRS 6440 6441 /* --------------------------------------------------------------------- */ 6442 6443 static int __init thermal_init(struct ibm_init_struct *iibm) 6444 { 6445 u8 t, ta1, ta2; 6446 int i; 6447 int acpi_tmp7; 6448 int res; 6449 6450 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6451 6452 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6453 6454 if (thinkpad_id.ec_model) { 6455 /* 6456 * Direct EC access mode: sensors at registers 6457 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6458 * non-implemented, thermal sensors return 0x80 when 6459 * not available 6460 */ 6461 6462 ta1 = ta2 = 0; 6463 for (i = 0; i < 8; i++) { 6464 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6465 ta1 |= t; 6466 } else { 6467 ta1 = 0; 6468 break; 6469 } 6470 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6471 ta2 |= t; 6472 } else { 6473 ta1 = 0; 6474 break; 6475 } 6476 } 6477 if (ta1 == 0) { 6478 /* This is sheer paranoia, but we handle it anyway */ 6479 if (acpi_tmp7) { 6480 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6481 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6482 } else { 6483 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6484 thermal_read_mode = TPACPI_THERMAL_NONE; 6485 } 6486 } else { 6487 thermal_read_mode = 6488 (ta2 != 0) ? 6489 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6490 } 6491 } else if (acpi_tmp7) { 6492 if (tpacpi_is_ibm() && 6493 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6494 /* 600e/x, 770e, 770x */ 6495 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6496 } else { 6497 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6498 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6499 } 6500 } else { 6501 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6502 thermal_read_mode = TPACPI_THERMAL_NONE; 6503 } 6504 6505 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6506 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6507 thermal_read_mode); 6508 6509 switch (thermal_read_mode) { 6510 case TPACPI_THERMAL_TPEC_16: 6511 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6512 &thermal_temp_input16_group); 6513 if (res) 6514 return res; 6515 break; 6516 case TPACPI_THERMAL_TPEC_8: 6517 case TPACPI_THERMAL_ACPI_TMP07: 6518 case TPACPI_THERMAL_ACPI_UPDT: 6519 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6520 &thermal_temp_input8_group); 6521 if (res) 6522 return res; 6523 break; 6524 case TPACPI_THERMAL_NONE: 6525 default: 6526 return 1; 6527 } 6528 6529 return 0; 6530 } 6531 6532 static void thermal_exit(void) 6533 { 6534 switch (thermal_read_mode) { 6535 case TPACPI_THERMAL_TPEC_16: 6536 sysfs_remove_group(&tpacpi_hwmon->kobj, 6537 &thermal_temp_input16_group); 6538 break; 6539 case TPACPI_THERMAL_TPEC_8: 6540 case TPACPI_THERMAL_ACPI_TMP07: 6541 case TPACPI_THERMAL_ACPI_UPDT: 6542 sysfs_remove_group(&tpacpi_hwmon->kobj, 6543 &thermal_temp_input8_group); 6544 break; 6545 case TPACPI_THERMAL_NONE: 6546 default: 6547 break; 6548 } 6549 } 6550 6551 static int thermal_read(struct seq_file *m) 6552 { 6553 int n, i; 6554 struct ibm_thermal_sensors_struct t; 6555 6556 n = thermal_get_sensors(&t); 6557 if (unlikely(n < 0)) 6558 return n; 6559 6560 seq_printf(m, "temperatures:\t"); 6561 6562 if (n > 0) { 6563 for (i = 0; i < (n - 1); i++) 6564 seq_printf(m, "%d ", t.temp[i] / 1000); 6565 seq_printf(m, "%d\n", t.temp[i] / 1000); 6566 } else 6567 seq_printf(m, "not supported\n"); 6568 6569 return 0; 6570 } 6571 6572 static struct ibm_struct thermal_driver_data = { 6573 .name = "thermal", 6574 .read = thermal_read, 6575 .exit = thermal_exit, 6576 }; 6577 6578 /************************************************************************* 6579 * Backlight/brightness subdriver 6580 */ 6581 6582 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6583 6584 /* 6585 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6586 * CMOS NVRAM byte 0x5E, bits 0-3. 6587 * 6588 * EC HBRV (0x31) has the following layout 6589 * Bit 7: unknown function 6590 * Bit 6: unknown function 6591 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6592 * Bit 4: must be set to zero to avoid problems 6593 * Bit 3-0: backlight brightness level 6594 * 6595 * brightness_get_raw returns status data in the HBRV layout 6596 * 6597 * WARNING: The X61 has been verified to use HBRV for something else, so 6598 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6599 * testing on the very early *60 Lenovo models... 6600 */ 6601 6602 enum { 6603 TP_EC_BACKLIGHT = 0x31, 6604 6605 /* TP_EC_BACKLIGHT bitmasks */ 6606 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6607 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6608 TP_EC_BACKLIGHT_MAPSW = 0x20, 6609 }; 6610 6611 enum tpacpi_brightness_access_mode { 6612 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6613 TPACPI_BRGHT_MODE_EC, /* EC control */ 6614 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6615 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6616 TPACPI_BRGHT_MODE_MAX 6617 }; 6618 6619 static struct backlight_device *ibm_backlight_device; 6620 6621 static enum tpacpi_brightness_access_mode brightness_mode = 6622 TPACPI_BRGHT_MODE_MAX; 6623 6624 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6625 6626 static struct mutex brightness_mutex; 6627 6628 /* NVRAM brightness access, 6629 * call with brightness_mutex held! */ 6630 static unsigned int tpacpi_brightness_nvram_get(void) 6631 { 6632 u8 lnvram; 6633 6634 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6635 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6636 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6637 lnvram &= bright_maxlvl; 6638 6639 return lnvram; 6640 } 6641 6642 static void tpacpi_brightness_checkpoint_nvram(void) 6643 { 6644 u8 lec = 0; 6645 u8 b_nvram; 6646 6647 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6648 return; 6649 6650 vdbg_printk(TPACPI_DBG_BRGHT, 6651 "trying to checkpoint backlight level to NVRAM...\n"); 6652 6653 if (mutex_lock_killable(&brightness_mutex) < 0) 6654 return; 6655 6656 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6657 goto unlock; 6658 lec &= TP_EC_BACKLIGHT_LVLMSK; 6659 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6660 6661 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6662 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6663 /* NVRAM needs update */ 6664 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6665 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6666 b_nvram |= lec; 6667 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6668 dbg_printk(TPACPI_DBG_BRGHT, 6669 "updated NVRAM backlight level to %u (0x%02x)\n", 6670 (unsigned int) lec, (unsigned int) b_nvram); 6671 } else 6672 vdbg_printk(TPACPI_DBG_BRGHT, 6673 "NVRAM backlight level already is %u (0x%02x)\n", 6674 (unsigned int) lec, (unsigned int) b_nvram); 6675 6676 unlock: 6677 mutex_unlock(&brightness_mutex); 6678 } 6679 6680 6681 /* call with brightness_mutex held! */ 6682 static int tpacpi_brightness_get_raw(int *status) 6683 { 6684 u8 lec = 0; 6685 6686 switch (brightness_mode) { 6687 case TPACPI_BRGHT_MODE_UCMS_STEP: 6688 *status = tpacpi_brightness_nvram_get(); 6689 return 0; 6690 case TPACPI_BRGHT_MODE_EC: 6691 case TPACPI_BRGHT_MODE_ECNVRAM: 6692 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6693 return -EIO; 6694 *status = lec; 6695 return 0; 6696 default: 6697 return -ENXIO; 6698 } 6699 } 6700 6701 /* call with brightness_mutex held! */ 6702 /* do NOT call with illegal backlight level value */ 6703 static int tpacpi_brightness_set_ec(unsigned int value) 6704 { 6705 u8 lec = 0; 6706 6707 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6708 return -EIO; 6709 6710 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6711 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6712 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6713 return -EIO; 6714 6715 return 0; 6716 } 6717 6718 /* call with brightness_mutex held! */ 6719 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6720 { 6721 int cmos_cmd, inc; 6722 unsigned int current_value, i; 6723 6724 current_value = tpacpi_brightness_nvram_get(); 6725 6726 if (value == current_value) 6727 return 0; 6728 6729 cmos_cmd = (value > current_value) ? 6730 TP_CMOS_BRIGHTNESS_UP : 6731 TP_CMOS_BRIGHTNESS_DOWN; 6732 inc = (value > current_value) ? 1 : -1; 6733 6734 for (i = current_value; i != value; i += inc) 6735 if (issue_thinkpad_cmos_command(cmos_cmd)) 6736 return -EIO; 6737 6738 return 0; 6739 } 6740 6741 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6742 static int brightness_set(unsigned int value) 6743 { 6744 int res; 6745 6746 if (value > bright_maxlvl) 6747 return -EINVAL; 6748 6749 vdbg_printk(TPACPI_DBG_BRGHT, 6750 "set backlight level to %d\n", value); 6751 6752 res = mutex_lock_killable(&brightness_mutex); 6753 if (res < 0) 6754 return res; 6755 6756 switch (brightness_mode) { 6757 case TPACPI_BRGHT_MODE_EC: 6758 case TPACPI_BRGHT_MODE_ECNVRAM: 6759 res = tpacpi_brightness_set_ec(value); 6760 break; 6761 case TPACPI_BRGHT_MODE_UCMS_STEP: 6762 res = tpacpi_brightness_set_ucmsstep(value); 6763 break; 6764 default: 6765 res = -ENXIO; 6766 } 6767 6768 mutex_unlock(&brightness_mutex); 6769 return res; 6770 } 6771 6772 /* sysfs backlight class ----------------------------------------------- */ 6773 6774 static int brightness_update_status(struct backlight_device *bd) 6775 { 6776 unsigned int level = 6777 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6778 bd->props.power == FB_BLANK_UNBLANK) ? 6779 bd->props.brightness : 0; 6780 6781 dbg_printk(TPACPI_DBG_BRGHT, 6782 "backlight: attempt to set level to %d\n", 6783 level); 6784 6785 /* it is the backlight class's job (caller) to handle 6786 * EINTR and other errors properly */ 6787 return brightness_set(level); 6788 } 6789 6790 static int brightness_get(struct backlight_device *bd) 6791 { 6792 int status, res; 6793 6794 res = mutex_lock_killable(&brightness_mutex); 6795 if (res < 0) 6796 return 0; 6797 6798 res = tpacpi_brightness_get_raw(&status); 6799 6800 mutex_unlock(&brightness_mutex); 6801 6802 if (res < 0) 6803 return 0; 6804 6805 return status & TP_EC_BACKLIGHT_LVLMSK; 6806 } 6807 6808 static void tpacpi_brightness_notify_change(void) 6809 { 6810 backlight_force_update(ibm_backlight_device, 6811 BACKLIGHT_UPDATE_HOTKEY); 6812 } 6813 6814 static const struct backlight_ops ibm_backlight_data = { 6815 .get_brightness = brightness_get, 6816 .update_status = brightness_update_status, 6817 }; 6818 6819 /* --------------------------------------------------------------------- */ 6820 6821 /* 6822 * Call _BCL method of video device. On some ThinkPads this will 6823 * switch the firmware to the ACPI brightness control mode. 6824 */ 6825 6826 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6827 { 6828 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6829 union acpi_object *obj; 6830 struct acpi_device *device, *child; 6831 int rc; 6832 6833 if (acpi_bus_get_device(handle, &device)) 6834 return 0; 6835 6836 rc = 0; 6837 list_for_each_entry(child, &device->children, node) { 6838 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6839 NULL, &buffer); 6840 if (ACPI_FAILURE(status)) { 6841 buffer.length = ACPI_ALLOCATE_BUFFER; 6842 continue; 6843 } 6844 6845 obj = (union acpi_object *)buffer.pointer; 6846 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6847 pr_err("Unknown _BCL data, please report this to %s\n", 6848 TPACPI_MAIL); 6849 rc = 0; 6850 } else { 6851 rc = obj->package.count; 6852 } 6853 break; 6854 } 6855 6856 kfree(buffer.pointer); 6857 return rc; 6858 } 6859 6860 6861 /* 6862 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6863 */ 6864 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6865 { 6866 acpi_handle video_device; 6867 int bcl_levels = 0; 6868 6869 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6870 if (video_device) 6871 bcl_levels = tpacpi_query_bcl_levels(video_device); 6872 6873 tp_features.bright_acpimode = (bcl_levels > 0); 6874 6875 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6876 } 6877 6878 /* 6879 * These are only useful for models that have only one possibility 6880 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6881 * these quirks. 6882 */ 6883 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6884 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6885 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6886 6887 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6888 /* Models with ATI GPUs known to require ECNVRAM mode */ 6889 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6890 6891 /* Models with ATI GPUs that can use ECNVRAM */ 6892 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6893 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6894 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6895 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6896 6897 /* Models with Intel Extreme Graphics 2 */ 6898 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6899 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6900 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6901 6902 /* Models with Intel GMA900 */ 6903 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6904 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6905 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6906 }; 6907 6908 /* 6909 * Returns < 0 for error, otherwise sets tp_features.bright_* 6910 * and bright_maxlvl. 6911 */ 6912 static void __init tpacpi_detect_brightness_capabilities(void) 6913 { 6914 unsigned int b; 6915 6916 vdbg_printk(TPACPI_DBG_INIT, 6917 "detecting firmware brightness interface capabilities\n"); 6918 6919 /* we could run a quirks check here (same table used by 6920 * brightness_init) if needed */ 6921 6922 /* 6923 * We always attempt to detect acpi support, so as to switch 6924 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6925 * going to publish a backlight interface 6926 */ 6927 b = tpacpi_check_std_acpi_brightness_support(); 6928 switch (b) { 6929 case 16: 6930 bright_maxlvl = 15; 6931 break; 6932 case 8: 6933 case 0: 6934 bright_maxlvl = 7; 6935 break; 6936 default: 6937 tp_features.bright_unkfw = 1; 6938 bright_maxlvl = b - 1; 6939 } 6940 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6941 } 6942 6943 static int __init brightness_init(struct ibm_init_struct *iibm) 6944 { 6945 struct backlight_properties props; 6946 int b; 6947 unsigned long quirks; 6948 6949 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6950 6951 mutex_init(&brightness_mutex); 6952 6953 quirks = tpacpi_check_quirks(brightness_quirk_table, 6954 ARRAY_SIZE(brightness_quirk_table)); 6955 6956 /* tpacpi_detect_brightness_capabilities() must have run already */ 6957 6958 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6959 if (tp_features.bright_unkfw) 6960 return 1; 6961 6962 if (!brightness_enable) { 6963 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6964 "brightness support disabled by module parameter\n"); 6965 return 1; 6966 } 6967 6968 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6969 if (brightness_enable > 1) { 6970 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6971 return 1; 6972 } else if (brightness_enable == 1) { 6973 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6974 return 1; 6975 } 6976 } else if (!tp_features.bright_acpimode) { 6977 pr_notice("ACPI backlight interface not available\n"); 6978 return 1; 6979 } 6980 6981 pr_notice("ACPI native brightness control enabled\n"); 6982 6983 /* 6984 * Check for module parameter bogosity, note that we 6985 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6986 * able to detect "unspecified" 6987 */ 6988 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6989 return -EINVAL; 6990 6991 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6992 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6993 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6994 if (quirks & TPACPI_BRGHT_Q_EC) 6995 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6996 else 6997 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6998 6999 dbg_printk(TPACPI_DBG_BRGHT, 7000 "driver auto-selected brightness_mode=%d\n", 7001 brightness_mode); 7002 } 7003 7004 /* Safety */ 7005 if (!tpacpi_is_ibm() && 7006 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7007 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7008 return -EINVAL; 7009 7010 if (tpacpi_brightness_get_raw(&b) < 0) 7011 return 1; 7012 7013 memset(&props, 0, sizeof(struct backlight_properties)); 7014 props.type = BACKLIGHT_PLATFORM; 7015 props.max_brightness = bright_maxlvl; 7016 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7017 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7018 NULL, NULL, 7019 &ibm_backlight_data, 7020 &props); 7021 if (IS_ERR(ibm_backlight_device)) { 7022 int rc = PTR_ERR(ibm_backlight_device); 7023 ibm_backlight_device = NULL; 7024 pr_err("Could not register backlight device\n"); 7025 return rc; 7026 } 7027 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7028 "brightness is supported\n"); 7029 7030 if (quirks & TPACPI_BRGHT_Q_ASK) { 7031 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7032 brightness_mode); 7033 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7034 TPACPI_MAIL); 7035 } 7036 7037 /* Added by mistake in early 2007. Probably useless, but it could 7038 * be working around some unknown firmware problem where the value 7039 * read at startup doesn't match the real hardware state... so leave 7040 * it in place just in case */ 7041 backlight_update_status(ibm_backlight_device); 7042 7043 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7044 "brightness: registering brightness hotkeys as change notification\n"); 7045 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7046 | TP_ACPI_HKEY_BRGHTUP_MASK 7047 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7048 return 0; 7049 } 7050 7051 static void brightness_suspend(void) 7052 { 7053 tpacpi_brightness_checkpoint_nvram(); 7054 } 7055 7056 static void brightness_shutdown(void) 7057 { 7058 tpacpi_brightness_checkpoint_nvram(); 7059 } 7060 7061 static void brightness_exit(void) 7062 { 7063 if (ibm_backlight_device) { 7064 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7065 "calling backlight_device_unregister()\n"); 7066 backlight_device_unregister(ibm_backlight_device); 7067 } 7068 7069 tpacpi_brightness_checkpoint_nvram(); 7070 } 7071 7072 static int brightness_read(struct seq_file *m) 7073 { 7074 int level; 7075 7076 level = brightness_get(NULL); 7077 if (level < 0) { 7078 seq_printf(m, "level:\t\tunreadable\n"); 7079 } else { 7080 seq_printf(m, "level:\t\t%d\n", level); 7081 seq_printf(m, "commands:\tup, down\n"); 7082 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7083 bright_maxlvl); 7084 } 7085 7086 return 0; 7087 } 7088 7089 static int brightness_write(char *buf) 7090 { 7091 int level; 7092 int rc; 7093 char *cmd; 7094 7095 level = brightness_get(NULL); 7096 if (level < 0) 7097 return level; 7098 7099 while ((cmd = strsep(&buf, ","))) { 7100 if (strlencmp(cmd, "up") == 0) { 7101 if (level < bright_maxlvl) 7102 level++; 7103 } else if (strlencmp(cmd, "down") == 0) { 7104 if (level > 0) 7105 level--; 7106 } else if (sscanf(cmd, "level %d", &level) == 1 && 7107 level >= 0 && level <= bright_maxlvl) { 7108 /* new level set */ 7109 } else 7110 return -EINVAL; 7111 } 7112 7113 tpacpi_disclose_usertask("procfs brightness", 7114 "set level to %d\n", level); 7115 7116 /* 7117 * Now we know what the final level should be, so we try to set it. 7118 * Doing it this way makes the syscall restartable in case of EINTR 7119 */ 7120 rc = brightness_set(level); 7121 if (!rc && ibm_backlight_device) 7122 backlight_force_update(ibm_backlight_device, 7123 BACKLIGHT_UPDATE_SYSFS); 7124 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7125 } 7126 7127 static struct ibm_struct brightness_driver_data = { 7128 .name = "brightness", 7129 .read = brightness_read, 7130 .write = brightness_write, 7131 .exit = brightness_exit, 7132 .suspend = brightness_suspend, 7133 .shutdown = brightness_shutdown, 7134 }; 7135 7136 /************************************************************************* 7137 * Volume subdriver 7138 */ 7139 7140 /* 7141 * IBM ThinkPads have a simple volume controller with MUTE gating. 7142 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7143 * 7144 * Since the *61 series (and probably also the later *60 series), Lenovo 7145 * ThinkPads only implement the MUTE gate. 7146 * 7147 * EC register 0x30 7148 * Bit 6: MUTE (1 mutes sound) 7149 * Bit 3-0: Volume 7150 * Other bits should be zero as far as we know. 7151 * 7152 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7153 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7154 * such as bit 7 which is used to detect repeated presses of MUTE, 7155 * and we leave them unchanged. 7156 * 7157 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7158 * in response to user input. Unfortunately, this rarely works well. 7159 * The laptop changes the state of its internal MUTE gate and, on some 7160 * models, sends KEY_MUTE, causing any user code that responds to the 7161 * mute button to get confused. The hardware MUTE gate is also 7162 * unnecessary, since user code can handle the mute button without 7163 * kernel or EC help. 7164 * 7165 * To avoid confusing userspace, we simply disable all EC-based mute 7166 * and volume controls when possible. 7167 */ 7168 7169 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7170 7171 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7172 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7173 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7174 7175 #if SNDRV_CARDS <= 32 7176 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7177 #else 7178 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7179 #endif 7180 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7181 static char *alsa_id = "ThinkPadEC"; 7182 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7183 7184 struct tpacpi_alsa_data { 7185 struct snd_card *card; 7186 struct snd_ctl_elem_id *ctl_mute_id; 7187 struct snd_ctl_elem_id *ctl_vol_id; 7188 }; 7189 7190 static struct snd_card *alsa_card; 7191 7192 enum { 7193 TP_EC_AUDIO = 0x30, 7194 7195 /* TP_EC_AUDIO bits */ 7196 TP_EC_AUDIO_MUTESW = 6, 7197 7198 /* TP_EC_AUDIO bitmasks */ 7199 TP_EC_AUDIO_LVL_MSK = 0x0F, 7200 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7201 7202 /* Maximum volume */ 7203 TP_EC_VOLUME_MAX = 14, 7204 }; 7205 7206 enum tpacpi_volume_access_mode { 7207 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7208 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7209 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7210 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7211 TPACPI_VOL_MODE_MAX 7212 }; 7213 7214 enum tpacpi_volume_capabilities { 7215 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7216 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7217 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7218 TPACPI_VOL_CAP_MAX 7219 }; 7220 7221 enum tpacpi_mute_btn_mode { 7222 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7223 /* We don't know what mode 1 is. */ 7224 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7225 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7226 }; 7227 7228 static enum tpacpi_volume_access_mode volume_mode = 7229 TPACPI_VOL_MODE_MAX; 7230 7231 static enum tpacpi_volume_capabilities volume_capabilities; 7232 static bool volume_control_allowed; 7233 static bool software_mute_requested = true; 7234 static bool software_mute_active; 7235 static int software_mute_orig_mode; 7236 7237 /* 7238 * Used to syncronize writers to TP_EC_AUDIO and 7239 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7240 */ 7241 static struct mutex volume_mutex; 7242 7243 static void tpacpi_volume_checkpoint_nvram(void) 7244 { 7245 u8 lec = 0; 7246 u8 b_nvram; 7247 u8 ec_mask; 7248 7249 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7250 return; 7251 if (!volume_control_allowed) 7252 return; 7253 if (software_mute_active) 7254 return; 7255 7256 vdbg_printk(TPACPI_DBG_MIXER, 7257 "trying to checkpoint mixer state to NVRAM...\n"); 7258 7259 if (tp_features.mixer_no_level_control) 7260 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7261 else 7262 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7263 7264 if (mutex_lock_killable(&volume_mutex) < 0) 7265 return; 7266 7267 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7268 goto unlock; 7269 lec &= ec_mask; 7270 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7271 7272 if (lec != (b_nvram & ec_mask)) { 7273 /* NVRAM needs update */ 7274 b_nvram &= ~ec_mask; 7275 b_nvram |= lec; 7276 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7277 dbg_printk(TPACPI_DBG_MIXER, 7278 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7279 (unsigned int) lec, (unsigned int) b_nvram); 7280 } else { 7281 vdbg_printk(TPACPI_DBG_MIXER, 7282 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7283 (unsigned int) lec, (unsigned int) b_nvram); 7284 } 7285 7286 unlock: 7287 mutex_unlock(&volume_mutex); 7288 } 7289 7290 static int volume_get_status_ec(u8 *status) 7291 { 7292 u8 s; 7293 7294 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7295 return -EIO; 7296 7297 *status = s; 7298 7299 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7300 7301 return 0; 7302 } 7303 7304 static int volume_get_status(u8 *status) 7305 { 7306 return volume_get_status_ec(status); 7307 } 7308 7309 static int volume_set_status_ec(const u8 status) 7310 { 7311 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7312 return -EIO; 7313 7314 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7315 7316 /* 7317 * On X200s, and possibly on others, it can take a while for 7318 * reads to become correct. 7319 */ 7320 msleep(1); 7321 7322 return 0; 7323 } 7324 7325 static int volume_set_status(const u8 status) 7326 { 7327 return volume_set_status_ec(status); 7328 } 7329 7330 /* returns < 0 on error, 0 on no change, 1 on change */ 7331 static int __volume_set_mute_ec(const bool mute) 7332 { 7333 int rc; 7334 u8 s, n; 7335 7336 if (mutex_lock_killable(&volume_mutex) < 0) 7337 return -EINTR; 7338 7339 rc = volume_get_status_ec(&s); 7340 if (rc) 7341 goto unlock; 7342 7343 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7344 s & ~TP_EC_AUDIO_MUTESW_MSK; 7345 7346 if (n != s) { 7347 rc = volume_set_status_ec(n); 7348 if (!rc) 7349 rc = 1; 7350 } 7351 7352 unlock: 7353 mutex_unlock(&volume_mutex); 7354 return rc; 7355 } 7356 7357 static int volume_alsa_set_mute(const bool mute) 7358 { 7359 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7360 (mute) ? "" : "un"); 7361 return __volume_set_mute_ec(mute); 7362 } 7363 7364 static int volume_set_mute(const bool mute) 7365 { 7366 int rc; 7367 7368 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7369 (mute) ? "" : "un"); 7370 7371 rc = __volume_set_mute_ec(mute); 7372 return (rc < 0) ? rc : 0; 7373 } 7374 7375 /* returns < 0 on error, 0 on no change, 1 on change */ 7376 static int __volume_set_volume_ec(const u8 vol) 7377 { 7378 int rc; 7379 u8 s, n; 7380 7381 if (vol > TP_EC_VOLUME_MAX) 7382 return -EINVAL; 7383 7384 if (mutex_lock_killable(&volume_mutex) < 0) 7385 return -EINTR; 7386 7387 rc = volume_get_status_ec(&s); 7388 if (rc) 7389 goto unlock; 7390 7391 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7392 7393 if (n != s) { 7394 rc = volume_set_status_ec(n); 7395 if (!rc) 7396 rc = 1; 7397 } 7398 7399 unlock: 7400 mutex_unlock(&volume_mutex); 7401 return rc; 7402 } 7403 7404 static int volume_set_software_mute(bool startup) 7405 { 7406 int result; 7407 7408 if (!tpacpi_is_lenovo()) 7409 return -ENODEV; 7410 7411 if (startup) { 7412 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7413 "HAUM", "qd")) 7414 return -EIO; 7415 7416 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7417 "Initial HAUM setting was %d\n", 7418 software_mute_orig_mode); 7419 } 7420 7421 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7422 (int)TP_EC_MUTE_BTN_NONE)) 7423 return -EIO; 7424 7425 if (result != TP_EC_MUTE_BTN_NONE) 7426 pr_warn("Unexpected SAUM result %d\n", 7427 result); 7428 7429 /* 7430 * In software mute mode, the standard codec controls take 7431 * precendence, so we unmute the ThinkPad HW switch at 7432 * startup. Just on case there are SAUM-capable ThinkPads 7433 * with level controls, set max HW volume as well. 7434 */ 7435 if (tp_features.mixer_no_level_control) 7436 result = volume_set_mute(false); 7437 else 7438 result = volume_set_status(TP_EC_VOLUME_MAX); 7439 7440 if (result != 0) 7441 pr_warn("Failed to unmute the HW mute switch\n"); 7442 7443 return 0; 7444 } 7445 7446 static void volume_exit_software_mute(void) 7447 { 7448 int r; 7449 7450 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7451 || r != software_mute_orig_mode) 7452 pr_warn("Failed to restore mute mode\n"); 7453 } 7454 7455 static int volume_alsa_set_volume(const u8 vol) 7456 { 7457 dbg_printk(TPACPI_DBG_MIXER, 7458 "ALSA: trying to set volume level to %hu\n", vol); 7459 return __volume_set_volume_ec(vol); 7460 } 7461 7462 static void volume_alsa_notify_change(void) 7463 { 7464 struct tpacpi_alsa_data *d; 7465 7466 if (alsa_card && alsa_card->private_data) { 7467 d = alsa_card->private_data; 7468 if (d->ctl_mute_id) 7469 snd_ctl_notify(alsa_card, 7470 SNDRV_CTL_EVENT_MASK_VALUE, 7471 d->ctl_mute_id); 7472 if (d->ctl_vol_id) 7473 snd_ctl_notify(alsa_card, 7474 SNDRV_CTL_EVENT_MASK_VALUE, 7475 d->ctl_vol_id); 7476 } 7477 } 7478 7479 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7480 struct snd_ctl_elem_info *uinfo) 7481 { 7482 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7483 uinfo->count = 1; 7484 uinfo->value.integer.min = 0; 7485 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7486 return 0; 7487 } 7488 7489 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7490 struct snd_ctl_elem_value *ucontrol) 7491 { 7492 u8 s; 7493 int rc; 7494 7495 rc = volume_get_status(&s); 7496 if (rc < 0) 7497 return rc; 7498 7499 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7500 return 0; 7501 } 7502 7503 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7504 struct snd_ctl_elem_value *ucontrol) 7505 { 7506 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7507 ucontrol->value.integer.value[0]); 7508 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7509 } 7510 7511 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7512 7513 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7514 struct snd_ctl_elem_value *ucontrol) 7515 { 7516 u8 s; 7517 int rc; 7518 7519 rc = volume_get_status(&s); 7520 if (rc < 0) 7521 return rc; 7522 7523 ucontrol->value.integer.value[0] = 7524 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7525 return 0; 7526 } 7527 7528 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7529 struct snd_ctl_elem_value *ucontrol) 7530 { 7531 tpacpi_disclose_usertask("ALSA", "%smute\n", 7532 ucontrol->value.integer.value[0] ? 7533 "un" : ""); 7534 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7535 } 7536 7537 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7538 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7539 .name = "Console Playback Volume", 7540 .index = 0, 7541 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7542 .info = volume_alsa_vol_info, 7543 .get = volume_alsa_vol_get, 7544 }; 7545 7546 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7547 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7548 .name = "Console Playback Switch", 7549 .index = 0, 7550 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7551 .info = volume_alsa_mute_info, 7552 .get = volume_alsa_mute_get, 7553 }; 7554 7555 static void volume_suspend(void) 7556 { 7557 tpacpi_volume_checkpoint_nvram(); 7558 } 7559 7560 static void volume_resume(void) 7561 { 7562 if (software_mute_active) { 7563 if (volume_set_software_mute(false) < 0) 7564 pr_warn("Failed to restore software mute\n"); 7565 } else { 7566 volume_alsa_notify_change(); 7567 } 7568 } 7569 7570 static void volume_shutdown(void) 7571 { 7572 tpacpi_volume_checkpoint_nvram(); 7573 } 7574 7575 static void volume_exit(void) 7576 { 7577 if (alsa_card) { 7578 snd_card_free(alsa_card); 7579 alsa_card = NULL; 7580 } 7581 7582 tpacpi_volume_checkpoint_nvram(); 7583 7584 if (software_mute_active) 7585 volume_exit_software_mute(); 7586 } 7587 7588 static int __init volume_create_alsa_mixer(void) 7589 { 7590 struct snd_card *card; 7591 struct tpacpi_alsa_data *data; 7592 struct snd_kcontrol *ctl_vol; 7593 struct snd_kcontrol *ctl_mute; 7594 int rc; 7595 7596 rc = snd_card_new(&tpacpi_pdev->dev, 7597 alsa_index, alsa_id, THIS_MODULE, 7598 sizeof(struct tpacpi_alsa_data), &card); 7599 if (rc < 0 || !card) { 7600 pr_err("Failed to create ALSA card structures: %d\n", rc); 7601 return 1; 7602 } 7603 7604 BUG_ON(!card->private_data); 7605 data = card->private_data; 7606 data->card = card; 7607 7608 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7609 sizeof(card->driver)); 7610 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7611 sizeof(card->shortname)); 7612 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7613 (thinkpad_id.ec_version_str) ? 7614 thinkpad_id.ec_version_str : "(unknown)"); 7615 snprintf(card->longname, sizeof(card->longname), 7616 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7617 (thinkpad_id.ec_version_str) ? 7618 thinkpad_id.ec_version_str : "unknown"); 7619 7620 if (volume_control_allowed) { 7621 volume_alsa_control_vol.put = volume_alsa_vol_put; 7622 volume_alsa_control_vol.access = 7623 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7624 7625 volume_alsa_control_mute.put = volume_alsa_mute_put; 7626 volume_alsa_control_mute.access = 7627 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7628 } 7629 7630 if (!tp_features.mixer_no_level_control) { 7631 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7632 rc = snd_ctl_add(card, ctl_vol); 7633 if (rc < 0) { 7634 pr_err("Failed to create ALSA volume control: %d\n", 7635 rc); 7636 goto err_exit; 7637 } 7638 data->ctl_vol_id = &ctl_vol->id; 7639 } 7640 7641 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7642 rc = snd_ctl_add(card, ctl_mute); 7643 if (rc < 0) { 7644 pr_err("Failed to create ALSA mute control: %d\n", rc); 7645 goto err_exit; 7646 } 7647 data->ctl_mute_id = &ctl_mute->id; 7648 7649 rc = snd_card_register(card); 7650 if (rc < 0) { 7651 pr_err("Failed to register ALSA card: %d\n", rc); 7652 goto err_exit; 7653 } 7654 7655 alsa_card = card; 7656 return 0; 7657 7658 err_exit: 7659 snd_card_free(card); 7660 return 1; 7661 } 7662 7663 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7664 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7665 7666 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7667 /* Whitelist volume level on all IBM by default */ 7668 { .vendor = PCI_VENDOR_ID_IBM, 7669 .bios = TPACPI_MATCH_ANY, 7670 .ec = TPACPI_MATCH_ANY, 7671 .quirks = TPACPI_VOL_Q_LEVEL }, 7672 7673 /* Lenovo models with volume control (needs confirmation) */ 7674 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7675 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7676 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7677 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7678 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7679 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7680 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7681 7682 /* Whitelist mute-only on all Lenovo by default */ 7683 { .vendor = PCI_VENDOR_ID_LENOVO, 7684 .bios = TPACPI_MATCH_ANY, 7685 .ec = TPACPI_MATCH_ANY, 7686 .quirks = TPACPI_VOL_Q_MUTEONLY } 7687 }; 7688 7689 static int __init volume_init(struct ibm_init_struct *iibm) 7690 { 7691 unsigned long quirks; 7692 int rc; 7693 7694 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7695 7696 mutex_init(&volume_mutex); 7697 7698 /* 7699 * Check for module parameter bogosity, note that we 7700 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7701 * able to detect "unspecified" 7702 */ 7703 if (volume_mode > TPACPI_VOL_MODE_MAX) 7704 return -EINVAL; 7705 7706 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7707 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7708 TPACPI_MAIL); 7709 return 1; 7710 } 7711 7712 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7713 return -EINVAL; 7714 7715 /* 7716 * The ALSA mixer is our primary interface. 7717 * When disabled, don't install the subdriver at all 7718 */ 7719 if (!alsa_enable) { 7720 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7721 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7722 return 1; 7723 } 7724 7725 quirks = tpacpi_check_quirks(volume_quirk_table, 7726 ARRAY_SIZE(volume_quirk_table)); 7727 7728 switch (volume_capabilities) { 7729 case TPACPI_VOL_CAP_AUTO: 7730 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7731 tp_features.mixer_no_level_control = 1; 7732 else if (quirks & TPACPI_VOL_Q_LEVEL) 7733 tp_features.mixer_no_level_control = 0; 7734 else 7735 return 1; /* no mixer */ 7736 break; 7737 case TPACPI_VOL_CAP_VOLMUTE: 7738 tp_features.mixer_no_level_control = 0; 7739 break; 7740 case TPACPI_VOL_CAP_MUTEONLY: 7741 tp_features.mixer_no_level_control = 1; 7742 break; 7743 default: 7744 return 1; 7745 } 7746 7747 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7748 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7749 "using user-supplied volume_capabilities=%d\n", 7750 volume_capabilities); 7751 7752 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7753 volume_mode == TPACPI_VOL_MODE_MAX) { 7754 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7755 7756 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7757 "driver auto-selected volume_mode=%d\n", 7758 volume_mode); 7759 } else { 7760 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7761 "using user-supplied volume_mode=%d\n", 7762 volume_mode); 7763 } 7764 7765 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7766 "mute is supported, volume control is %s\n", 7767 str_supported(!tp_features.mixer_no_level_control)); 7768 7769 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7770 software_mute_active = true; 7771 } else { 7772 rc = volume_create_alsa_mixer(); 7773 if (rc) { 7774 pr_err("Could not create the ALSA mixer interface\n"); 7775 return rc; 7776 } 7777 7778 pr_info("Console audio control enabled, mode: %s\n", 7779 (volume_control_allowed) ? 7780 "override (read/write)" : 7781 "monitor (read only)"); 7782 } 7783 7784 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7785 "registering volume hotkeys as change notification\n"); 7786 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7787 | TP_ACPI_HKEY_VOLUP_MASK 7788 | TP_ACPI_HKEY_VOLDWN_MASK 7789 | TP_ACPI_HKEY_MUTE_MASK); 7790 7791 return 0; 7792 } 7793 7794 static int volume_read(struct seq_file *m) 7795 { 7796 u8 status; 7797 7798 if (volume_get_status(&status) < 0) { 7799 seq_printf(m, "level:\t\tunreadable\n"); 7800 } else { 7801 if (tp_features.mixer_no_level_control) 7802 seq_printf(m, "level:\t\tunsupported\n"); 7803 else 7804 seq_printf(m, "level:\t\t%d\n", 7805 status & TP_EC_AUDIO_LVL_MSK); 7806 7807 seq_printf(m, "mute:\t\t%s\n", 7808 onoff(status, TP_EC_AUDIO_MUTESW)); 7809 7810 if (volume_control_allowed) { 7811 seq_printf(m, "commands:\tunmute, mute\n"); 7812 if (!tp_features.mixer_no_level_control) { 7813 seq_printf(m, "commands:\tup, down\n"); 7814 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7815 TP_EC_VOLUME_MAX); 7816 } 7817 } 7818 } 7819 7820 return 0; 7821 } 7822 7823 static int volume_write(char *buf) 7824 { 7825 u8 s; 7826 u8 new_level, new_mute; 7827 int l; 7828 char *cmd; 7829 int rc; 7830 7831 /* 7832 * We do allow volume control at driver startup, so that the 7833 * user can set initial state through the volume=... parameter hack. 7834 */ 7835 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7836 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7837 tp_warned.volume_ctrl_forbidden = 1; 7838 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7839 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7840 } 7841 return -EPERM; 7842 } 7843 7844 rc = volume_get_status(&s); 7845 if (rc < 0) 7846 return rc; 7847 7848 new_level = s & TP_EC_AUDIO_LVL_MSK; 7849 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7850 7851 while ((cmd = strsep(&buf, ","))) { 7852 if (!tp_features.mixer_no_level_control) { 7853 if (strlencmp(cmd, "up") == 0) { 7854 if (new_mute) 7855 new_mute = 0; 7856 else if (new_level < TP_EC_VOLUME_MAX) 7857 new_level++; 7858 continue; 7859 } else if (strlencmp(cmd, "down") == 0) { 7860 if (new_mute) 7861 new_mute = 0; 7862 else if (new_level > 0) 7863 new_level--; 7864 continue; 7865 } else if (sscanf(cmd, "level %u", &l) == 1 && 7866 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7867 new_level = l; 7868 continue; 7869 } 7870 } 7871 if (strlencmp(cmd, "mute") == 0) 7872 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7873 else if (strlencmp(cmd, "unmute") == 0) 7874 new_mute = 0; 7875 else 7876 return -EINVAL; 7877 } 7878 7879 if (tp_features.mixer_no_level_control) { 7880 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7881 new_mute ? "" : "un"); 7882 rc = volume_set_mute(!!new_mute); 7883 } else { 7884 tpacpi_disclose_usertask("procfs volume", 7885 "%smute and set level to %d\n", 7886 new_mute ? "" : "un", new_level); 7887 rc = volume_set_status(new_mute | new_level); 7888 } 7889 volume_alsa_notify_change(); 7890 7891 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7892 } 7893 7894 static struct ibm_struct volume_driver_data = { 7895 .name = "volume", 7896 .read = volume_read, 7897 .write = volume_write, 7898 .exit = volume_exit, 7899 .suspend = volume_suspend, 7900 .resume = volume_resume, 7901 .shutdown = volume_shutdown, 7902 }; 7903 7904 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7905 7906 #define alsa_card NULL 7907 7908 static inline void volume_alsa_notify_change(void) 7909 { 7910 } 7911 7912 static int __init volume_init(struct ibm_init_struct *iibm) 7913 { 7914 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7915 7916 return 1; 7917 } 7918 7919 static struct ibm_struct volume_driver_data = { 7920 .name = "volume", 7921 }; 7922 7923 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7924 7925 /************************************************************************* 7926 * Fan subdriver 7927 */ 7928 7929 /* 7930 * FAN ACCESS MODES 7931 * 7932 * TPACPI_FAN_RD_ACPI_GFAN: 7933 * ACPI GFAN method: returns fan level 7934 * 7935 * see TPACPI_FAN_WR_ACPI_SFAN 7936 * EC 0x2f (HFSP) not available if GFAN exists 7937 * 7938 * TPACPI_FAN_WR_ACPI_SFAN: 7939 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7940 * 7941 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7942 * it for writing. 7943 * 7944 * TPACPI_FAN_WR_TPEC: 7945 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7946 * Supported on almost all ThinkPads 7947 * 7948 * Fan speed changes of any sort (including those caused by the 7949 * disengaged mode) are usually done slowly by the firmware as the 7950 * maximum amount of fan duty cycle change per second seems to be 7951 * limited. 7952 * 7953 * Reading is not available if GFAN exists. 7954 * Writing is not available if SFAN exists. 7955 * 7956 * Bits 7957 * 7 automatic mode engaged; 7958 * (default operation mode of the ThinkPad) 7959 * fan level is ignored in this mode. 7960 * 6 full speed mode (takes precedence over bit 7); 7961 * not available on all thinkpads. May disable 7962 * the tachometer while the fan controller ramps up 7963 * the speed (which can take up to a few *minutes*). 7964 * Speeds up fan to 100% duty-cycle, which is far above 7965 * the standard RPM levels. It is not impossible that 7966 * it could cause hardware damage. 7967 * 5-3 unused in some models. Extra bits for fan level 7968 * in others, but still useless as all values above 7969 * 7 map to the same speed as level 7 in these models. 7970 * 2-0 fan level (0..7 usually) 7971 * 0x00 = stop 7972 * 0x07 = max (set when temperatures critical) 7973 * Some ThinkPads may have other levels, see 7974 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7975 * 7976 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7977 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7978 * does so, its initial value is meaningless (0x07). 7979 * 7980 * For firmware bugs, refer to: 7981 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7982 * 7983 * ---- 7984 * 7985 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7986 * Main fan tachometer reading (in RPM) 7987 * 7988 * This register is present on all ThinkPads with a new-style EC, and 7989 * it is known not to be present on the A21m/e, and T22, as there is 7990 * something else in offset 0x84 according to the ACPI DSDT. Other 7991 * ThinkPads from this same time period (and earlier) probably lack the 7992 * tachometer as well. 7993 * 7994 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7995 * was never fixed by IBM to report the EC firmware version string 7996 * probably support the tachometer (like the early X models), so 7997 * detecting it is quite hard. We need more data to know for sure. 7998 * 7999 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8000 * might result. 8001 * 8002 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8003 * mode. 8004 * 8005 * For firmware bugs, refer to: 8006 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8007 * 8008 * ---- 8009 * 8010 * ThinkPad EC register 0x31 bit 0 (only on select models) 8011 * 8012 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8013 * show the speed of the main fan. When bit 0 of EC register 0x31 8014 * is one, the tachometer registers show the speed of the auxiliary 8015 * fan. 8016 * 8017 * Fan control seems to affect both fans, regardless of the state 8018 * of this bit. 8019 * 8020 * So far, only the firmware for the X60/X61 non-tablet versions 8021 * seem to support this (firmware TP-7M). 8022 * 8023 * TPACPI_FAN_WR_ACPI_FANS: 8024 * ThinkPad X31, X40, X41. Not available in the X60. 8025 * 8026 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8027 * high speed. ACPI DSDT seems to map these three speeds to levels 8028 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8029 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8030 * 8031 * The speeds are stored on handles 8032 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8033 * 8034 * There are three default speed sets, accessible as handles: 8035 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8036 * 8037 * ACPI DSDT switches which set is in use depending on various 8038 * factors. 8039 * 8040 * TPACPI_FAN_WR_TPEC is also available and should be used to 8041 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8042 * but the ACPI tables just mention level 7. 8043 */ 8044 8045 enum { /* Fan control constants */ 8046 fan_status_offset = 0x2f, /* EC register 0x2f */ 8047 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8048 * 0x84 must be read before 0x85 */ 8049 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8050 bit 0 selects which fan is active */ 8051 8052 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8053 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8054 8055 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8056 }; 8057 8058 enum fan_status_access_mode { 8059 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8060 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8061 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8062 }; 8063 8064 enum fan_control_access_mode { 8065 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8066 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8067 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8068 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8069 }; 8070 8071 enum fan_control_commands { 8072 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8073 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8074 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8075 * and also watchdog cmd */ 8076 }; 8077 8078 static bool fan_control_allowed; 8079 8080 static enum fan_status_access_mode fan_status_access_mode; 8081 static enum fan_control_access_mode fan_control_access_mode; 8082 static enum fan_control_commands fan_control_commands; 8083 8084 static u8 fan_control_initial_status; 8085 static u8 fan_control_desired_level; 8086 static u8 fan_control_resume_level; 8087 static int fan_watchdog_maxinterval; 8088 8089 static struct mutex fan_mutex; 8090 8091 static void fan_watchdog_fire(struct work_struct *ignored); 8092 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8093 8094 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8095 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8096 "\\FSPD", /* 600e/x, 770e, 770x */ 8097 ); /* all others */ 8098 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8099 "JFNS", /* 770x-JL */ 8100 ); /* all others */ 8101 8102 /* 8103 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8104 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8105 * be in auto mode (0x80). 8106 * 8107 * This is corrected by any write to HFSP either by the driver, or 8108 * by the firmware. 8109 * 8110 * We assume 0x07 really means auto mode while this quirk is active, 8111 * as this is far more likely than the ThinkPad being in level 7, 8112 * which is only used by the firmware during thermal emergencies. 8113 * 8114 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8115 * TP-70 (T43, R52), which are known to be buggy. 8116 */ 8117 8118 static void fan_quirk1_setup(void) 8119 { 8120 if (fan_control_initial_status == 0x07) { 8121 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8122 tp_features.fan_ctrl_status_undef = 1; 8123 } 8124 } 8125 8126 static void fan_quirk1_handle(u8 *fan_status) 8127 { 8128 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8129 if (*fan_status != fan_control_initial_status) { 8130 /* something changed the HFSP regisnter since 8131 * driver init time, so it is not undefined 8132 * anymore */ 8133 tp_features.fan_ctrl_status_undef = 0; 8134 } else { 8135 /* Return most likely status. In fact, it 8136 * might be the only possible status */ 8137 *fan_status = TP_EC_FAN_AUTO; 8138 } 8139 } 8140 } 8141 8142 /* Select main fan on X60/X61, NOOP on others */ 8143 static bool fan_select_fan1(void) 8144 { 8145 if (tp_features.second_fan) { 8146 u8 val; 8147 8148 if (ec_read(fan_select_offset, &val) < 0) 8149 return false; 8150 val &= 0xFEU; 8151 if (ec_write(fan_select_offset, val) < 0) 8152 return false; 8153 } 8154 return true; 8155 } 8156 8157 /* Select secondary fan on X60/X61 */ 8158 static bool fan_select_fan2(void) 8159 { 8160 u8 val; 8161 8162 if (!tp_features.second_fan) 8163 return false; 8164 8165 if (ec_read(fan_select_offset, &val) < 0) 8166 return false; 8167 val |= 0x01U; 8168 if (ec_write(fan_select_offset, val) < 0) 8169 return false; 8170 8171 return true; 8172 } 8173 8174 /* 8175 * Call with fan_mutex held 8176 */ 8177 static void fan_update_desired_level(u8 status) 8178 { 8179 if ((status & 8180 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8181 if (status > 7) 8182 fan_control_desired_level = 7; 8183 else 8184 fan_control_desired_level = status; 8185 } 8186 } 8187 8188 static int fan_get_status(u8 *status) 8189 { 8190 u8 s; 8191 8192 /* TODO: 8193 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8194 8195 switch (fan_status_access_mode) { 8196 case TPACPI_FAN_RD_ACPI_GFAN: { 8197 /* 570, 600e/x, 770e, 770x */ 8198 int res; 8199 8200 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8201 return -EIO; 8202 8203 if (likely(status)) 8204 *status = res & 0x07; 8205 8206 break; 8207 } 8208 case TPACPI_FAN_RD_TPEC: 8209 /* all except 570, 600e/x, 770e, 770x */ 8210 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8211 return -EIO; 8212 8213 if (likely(status)) { 8214 *status = s; 8215 fan_quirk1_handle(status); 8216 } 8217 8218 break; 8219 8220 default: 8221 return -ENXIO; 8222 } 8223 8224 return 0; 8225 } 8226 8227 static int fan_get_status_safe(u8 *status) 8228 { 8229 int rc; 8230 u8 s; 8231 8232 if (mutex_lock_killable(&fan_mutex)) 8233 return -ERESTARTSYS; 8234 rc = fan_get_status(&s); 8235 if (!rc) 8236 fan_update_desired_level(s); 8237 mutex_unlock(&fan_mutex); 8238 8239 if (rc) 8240 return rc; 8241 if (status) 8242 *status = s; 8243 8244 return 0; 8245 } 8246 8247 static int fan_get_speed(unsigned int *speed) 8248 { 8249 u8 hi, lo; 8250 8251 switch (fan_status_access_mode) { 8252 case TPACPI_FAN_RD_TPEC: 8253 /* all except 570, 600e/x, 770e, 770x */ 8254 if (unlikely(!fan_select_fan1())) 8255 return -EIO; 8256 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8257 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8258 return -EIO; 8259 8260 if (likely(speed)) 8261 *speed = (hi << 8) | lo; 8262 8263 break; 8264 8265 default: 8266 return -ENXIO; 8267 } 8268 8269 return 0; 8270 } 8271 8272 static int fan2_get_speed(unsigned int *speed) 8273 { 8274 u8 hi, lo; 8275 bool rc; 8276 8277 switch (fan_status_access_mode) { 8278 case TPACPI_FAN_RD_TPEC: 8279 /* all except 570, 600e/x, 770e, 770x */ 8280 if (unlikely(!fan_select_fan2())) 8281 return -EIO; 8282 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8283 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8284 fan_select_fan1(); /* play it safe */ 8285 if (rc) 8286 return -EIO; 8287 8288 if (likely(speed)) 8289 *speed = (hi << 8) | lo; 8290 8291 break; 8292 8293 default: 8294 return -ENXIO; 8295 } 8296 8297 return 0; 8298 } 8299 8300 static int fan_set_level(int level) 8301 { 8302 if (!fan_control_allowed) 8303 return -EPERM; 8304 8305 switch (fan_control_access_mode) { 8306 case TPACPI_FAN_WR_ACPI_SFAN: 8307 if ((level < 0) || (level > 7)) 8308 return -EINVAL; 8309 8310 if (tp_features.second_fan_ctl) { 8311 if (!fan_select_fan2() || 8312 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8313 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8314 tp_features.second_fan_ctl = 0; 8315 } 8316 fan_select_fan1(); 8317 } 8318 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8319 return -EIO; 8320 break; 8321 8322 case TPACPI_FAN_WR_ACPI_FANS: 8323 case TPACPI_FAN_WR_TPEC: 8324 if (!(level & TP_EC_FAN_AUTO) && 8325 !(level & TP_EC_FAN_FULLSPEED) && 8326 ((level < 0) || (level > 7))) 8327 return -EINVAL; 8328 8329 /* safety net should the EC not support AUTO 8330 * or FULLSPEED mode bits and just ignore them */ 8331 if (level & TP_EC_FAN_FULLSPEED) 8332 level |= 7; /* safety min speed 7 */ 8333 else if (level & TP_EC_FAN_AUTO) 8334 level |= 4; /* safety min speed 4 */ 8335 8336 if (tp_features.second_fan_ctl) { 8337 if (!fan_select_fan2() || 8338 !acpi_ec_write(fan_status_offset, level)) { 8339 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8340 tp_features.second_fan_ctl = 0; 8341 } 8342 fan_select_fan1(); 8343 8344 } 8345 if (!acpi_ec_write(fan_status_offset, level)) 8346 return -EIO; 8347 else 8348 tp_features.fan_ctrl_status_undef = 0; 8349 break; 8350 8351 default: 8352 return -ENXIO; 8353 } 8354 8355 vdbg_printk(TPACPI_DBG_FAN, 8356 "fan control: set fan control register to 0x%02x\n", level); 8357 return 0; 8358 } 8359 8360 static int fan_set_level_safe(int level) 8361 { 8362 int rc; 8363 8364 if (!fan_control_allowed) 8365 return -EPERM; 8366 8367 if (mutex_lock_killable(&fan_mutex)) 8368 return -ERESTARTSYS; 8369 8370 if (level == TPACPI_FAN_LAST_LEVEL) 8371 level = fan_control_desired_level; 8372 8373 rc = fan_set_level(level); 8374 if (!rc) 8375 fan_update_desired_level(level); 8376 8377 mutex_unlock(&fan_mutex); 8378 return rc; 8379 } 8380 8381 static int fan_set_enable(void) 8382 { 8383 u8 s; 8384 int rc; 8385 8386 if (!fan_control_allowed) 8387 return -EPERM; 8388 8389 if (mutex_lock_killable(&fan_mutex)) 8390 return -ERESTARTSYS; 8391 8392 switch (fan_control_access_mode) { 8393 case TPACPI_FAN_WR_ACPI_FANS: 8394 case TPACPI_FAN_WR_TPEC: 8395 rc = fan_get_status(&s); 8396 if (rc < 0) 8397 break; 8398 8399 /* Don't go out of emergency fan mode */ 8400 if (s != 7) { 8401 s &= 0x07; 8402 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8403 } 8404 8405 if (!acpi_ec_write(fan_status_offset, s)) 8406 rc = -EIO; 8407 else { 8408 tp_features.fan_ctrl_status_undef = 0; 8409 rc = 0; 8410 } 8411 break; 8412 8413 case TPACPI_FAN_WR_ACPI_SFAN: 8414 rc = fan_get_status(&s); 8415 if (rc < 0) 8416 break; 8417 8418 s &= 0x07; 8419 8420 /* Set fan to at least level 4 */ 8421 s |= 4; 8422 8423 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8424 rc = -EIO; 8425 else 8426 rc = 0; 8427 break; 8428 8429 default: 8430 rc = -ENXIO; 8431 } 8432 8433 mutex_unlock(&fan_mutex); 8434 8435 if (!rc) 8436 vdbg_printk(TPACPI_DBG_FAN, 8437 "fan control: set fan control register to 0x%02x\n", 8438 s); 8439 return rc; 8440 } 8441 8442 static int fan_set_disable(void) 8443 { 8444 int rc; 8445 8446 if (!fan_control_allowed) 8447 return -EPERM; 8448 8449 if (mutex_lock_killable(&fan_mutex)) 8450 return -ERESTARTSYS; 8451 8452 rc = 0; 8453 switch (fan_control_access_mode) { 8454 case TPACPI_FAN_WR_ACPI_FANS: 8455 case TPACPI_FAN_WR_TPEC: 8456 if (!acpi_ec_write(fan_status_offset, 0x00)) 8457 rc = -EIO; 8458 else { 8459 fan_control_desired_level = 0; 8460 tp_features.fan_ctrl_status_undef = 0; 8461 } 8462 break; 8463 8464 case TPACPI_FAN_WR_ACPI_SFAN: 8465 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8466 rc = -EIO; 8467 else 8468 fan_control_desired_level = 0; 8469 break; 8470 8471 default: 8472 rc = -ENXIO; 8473 } 8474 8475 if (!rc) 8476 vdbg_printk(TPACPI_DBG_FAN, 8477 "fan control: set fan control register to 0\n"); 8478 8479 mutex_unlock(&fan_mutex); 8480 return rc; 8481 } 8482 8483 static int fan_set_speed(int speed) 8484 { 8485 int rc; 8486 8487 if (!fan_control_allowed) 8488 return -EPERM; 8489 8490 if (mutex_lock_killable(&fan_mutex)) 8491 return -ERESTARTSYS; 8492 8493 rc = 0; 8494 switch (fan_control_access_mode) { 8495 case TPACPI_FAN_WR_ACPI_FANS: 8496 if (speed >= 0 && speed <= 65535) { 8497 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8498 speed, speed, speed)) 8499 rc = -EIO; 8500 } else 8501 rc = -EINVAL; 8502 break; 8503 8504 default: 8505 rc = -ENXIO; 8506 } 8507 8508 mutex_unlock(&fan_mutex); 8509 return rc; 8510 } 8511 8512 static void fan_watchdog_reset(void) 8513 { 8514 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8515 return; 8516 8517 if (fan_watchdog_maxinterval > 0 && 8518 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8519 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8520 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8521 else 8522 cancel_delayed_work(&fan_watchdog_task); 8523 } 8524 8525 static void fan_watchdog_fire(struct work_struct *ignored) 8526 { 8527 int rc; 8528 8529 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8530 return; 8531 8532 pr_notice("fan watchdog: enabling fan\n"); 8533 rc = fan_set_enable(); 8534 if (rc < 0) { 8535 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8536 rc); 8537 /* reschedule for later */ 8538 fan_watchdog_reset(); 8539 } 8540 } 8541 8542 /* 8543 * SYSFS fan layout: hwmon compatible (device) 8544 * 8545 * pwm*_enable: 8546 * 0: "disengaged" mode 8547 * 1: manual mode 8548 * 2: native EC "auto" mode (recommended, hardware default) 8549 * 8550 * pwm*: set speed in manual mode, ignored otherwise. 8551 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8552 * interpolation. 8553 * 8554 * fan*_input: tachometer reading, RPM 8555 * 8556 * 8557 * SYSFS fan layout: extensions 8558 * 8559 * fan_watchdog (driver): 8560 * fan watchdog interval in seconds, 0 disables (default), max 120 8561 */ 8562 8563 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8564 static ssize_t fan_pwm1_enable_show(struct device *dev, 8565 struct device_attribute *attr, 8566 char *buf) 8567 { 8568 int res, mode; 8569 u8 status; 8570 8571 res = fan_get_status_safe(&status); 8572 if (res) 8573 return res; 8574 8575 if (status & TP_EC_FAN_FULLSPEED) { 8576 mode = 0; 8577 } else if (status & TP_EC_FAN_AUTO) { 8578 mode = 2; 8579 } else 8580 mode = 1; 8581 8582 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8583 } 8584 8585 static ssize_t fan_pwm1_enable_store(struct device *dev, 8586 struct device_attribute *attr, 8587 const char *buf, size_t count) 8588 { 8589 unsigned long t; 8590 int res, level; 8591 8592 if (parse_strtoul(buf, 2, &t)) 8593 return -EINVAL; 8594 8595 tpacpi_disclose_usertask("hwmon pwm1_enable", 8596 "set fan mode to %lu\n", t); 8597 8598 switch (t) { 8599 case 0: 8600 level = TP_EC_FAN_FULLSPEED; 8601 break; 8602 case 1: 8603 level = TPACPI_FAN_LAST_LEVEL; 8604 break; 8605 case 2: 8606 level = TP_EC_FAN_AUTO; 8607 break; 8608 case 3: 8609 /* reserved for software-controlled auto mode */ 8610 return -ENOSYS; 8611 default: 8612 return -EINVAL; 8613 } 8614 8615 res = fan_set_level_safe(level); 8616 if (res == -ENXIO) 8617 return -EINVAL; 8618 else if (res < 0) 8619 return res; 8620 8621 fan_watchdog_reset(); 8622 8623 return count; 8624 } 8625 8626 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8627 fan_pwm1_enable_show, fan_pwm1_enable_store); 8628 8629 /* sysfs fan pwm1 ------------------------------------------------------ */ 8630 static ssize_t fan_pwm1_show(struct device *dev, 8631 struct device_attribute *attr, 8632 char *buf) 8633 { 8634 int res; 8635 u8 status; 8636 8637 res = fan_get_status_safe(&status); 8638 if (res) 8639 return res; 8640 8641 if ((status & 8642 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8643 status = fan_control_desired_level; 8644 8645 if (status > 7) 8646 status = 7; 8647 8648 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8649 } 8650 8651 static ssize_t fan_pwm1_store(struct device *dev, 8652 struct device_attribute *attr, 8653 const char *buf, size_t count) 8654 { 8655 unsigned long s; 8656 int rc; 8657 u8 status, newlevel; 8658 8659 if (parse_strtoul(buf, 255, &s)) 8660 return -EINVAL; 8661 8662 tpacpi_disclose_usertask("hwmon pwm1", 8663 "set fan speed to %lu\n", s); 8664 8665 /* scale down from 0-255 to 0-7 */ 8666 newlevel = (s >> 5) & 0x07; 8667 8668 if (mutex_lock_killable(&fan_mutex)) 8669 return -ERESTARTSYS; 8670 8671 rc = fan_get_status(&status); 8672 if (!rc && (status & 8673 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8674 rc = fan_set_level(newlevel); 8675 if (rc == -ENXIO) 8676 rc = -EINVAL; 8677 else if (!rc) { 8678 fan_update_desired_level(newlevel); 8679 fan_watchdog_reset(); 8680 } 8681 } 8682 8683 mutex_unlock(&fan_mutex); 8684 return (rc) ? rc : count; 8685 } 8686 8687 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8688 8689 /* sysfs fan fan1_input ------------------------------------------------ */ 8690 static ssize_t fan_fan1_input_show(struct device *dev, 8691 struct device_attribute *attr, 8692 char *buf) 8693 { 8694 int res; 8695 unsigned int speed; 8696 8697 res = fan_get_speed(&speed); 8698 if (res < 0) 8699 return res; 8700 8701 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8702 } 8703 8704 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8705 8706 /* sysfs fan fan2_input ------------------------------------------------ */ 8707 static ssize_t fan_fan2_input_show(struct device *dev, 8708 struct device_attribute *attr, 8709 char *buf) 8710 { 8711 int res; 8712 unsigned int speed; 8713 8714 res = fan2_get_speed(&speed); 8715 if (res < 0) 8716 return res; 8717 8718 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8719 } 8720 8721 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8722 8723 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8724 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8725 { 8726 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8727 } 8728 8729 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8730 size_t count) 8731 { 8732 unsigned long t; 8733 8734 if (parse_strtoul(buf, 120, &t)) 8735 return -EINVAL; 8736 8737 if (!fan_control_allowed) 8738 return -EPERM; 8739 8740 fan_watchdog_maxinterval = t; 8741 fan_watchdog_reset(); 8742 8743 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8744 8745 return count; 8746 } 8747 static DRIVER_ATTR_RW(fan_watchdog); 8748 8749 /* --------------------------------------------------------------------- */ 8750 static struct attribute *fan_attributes[] = { 8751 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8752 &dev_attr_fan1_input.attr, 8753 NULL, /* for fan2_input */ 8754 NULL 8755 }; 8756 8757 static const struct attribute_group fan_attr_group = { 8758 .attrs = fan_attributes, 8759 }; 8760 8761 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8762 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8763 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8764 8765 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8766 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8767 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8768 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8769 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8770 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8771 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8772 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8773 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8774 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8775 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8776 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8777 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8778 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8779 }; 8780 8781 static int __init fan_init(struct ibm_init_struct *iibm) 8782 { 8783 int rc; 8784 unsigned long quirks; 8785 8786 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8787 "initializing fan subdriver\n"); 8788 8789 mutex_init(&fan_mutex); 8790 fan_status_access_mode = TPACPI_FAN_NONE; 8791 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8792 fan_control_commands = 0; 8793 fan_watchdog_maxinterval = 0; 8794 tp_features.fan_ctrl_status_undef = 0; 8795 tp_features.second_fan = 0; 8796 tp_features.second_fan_ctl = 0; 8797 fan_control_desired_level = 7; 8798 8799 if (tpacpi_is_ibm()) { 8800 TPACPI_ACPIHANDLE_INIT(fans); 8801 TPACPI_ACPIHANDLE_INIT(gfan); 8802 TPACPI_ACPIHANDLE_INIT(sfan); 8803 } 8804 8805 quirks = tpacpi_check_quirks(fan_quirk_table, 8806 ARRAY_SIZE(fan_quirk_table)); 8807 8808 if (gfan_handle) { 8809 /* 570, 600e/x, 770e, 770x */ 8810 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8811 } else { 8812 /* all other ThinkPads: note that even old-style 8813 * ThinkPad ECs supports the fan control register */ 8814 if (likely(acpi_ec_read(fan_status_offset, 8815 &fan_control_initial_status))) { 8816 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8817 if (quirks & TPACPI_FAN_Q1) 8818 fan_quirk1_setup(); 8819 if (quirks & TPACPI_FAN_2FAN) { 8820 tp_features.second_fan = 1; 8821 pr_info("secondary fan support enabled\n"); 8822 } 8823 if (quirks & TPACPI_FAN_2CTL) { 8824 tp_features.second_fan = 1; 8825 tp_features.second_fan_ctl = 1; 8826 pr_info("secondary fan control enabled\n"); 8827 } 8828 } else { 8829 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8830 return 1; 8831 } 8832 } 8833 8834 if (sfan_handle) { 8835 /* 570, 770x-JL */ 8836 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8837 fan_control_commands |= 8838 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8839 } else { 8840 if (!gfan_handle) { 8841 /* gfan without sfan means no fan control */ 8842 /* all other models implement TP EC 0x2f control */ 8843 8844 if (fans_handle) { 8845 /* X31, X40, X41 */ 8846 fan_control_access_mode = 8847 TPACPI_FAN_WR_ACPI_FANS; 8848 fan_control_commands |= 8849 TPACPI_FAN_CMD_SPEED | 8850 TPACPI_FAN_CMD_LEVEL | 8851 TPACPI_FAN_CMD_ENABLE; 8852 } else { 8853 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8854 fan_control_commands |= 8855 TPACPI_FAN_CMD_LEVEL | 8856 TPACPI_FAN_CMD_ENABLE; 8857 } 8858 } 8859 } 8860 8861 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8862 "fan is %s, modes %d, %d\n", 8863 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8864 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8865 fan_status_access_mode, fan_control_access_mode); 8866 8867 /* fan control master switch */ 8868 if (!fan_control_allowed) { 8869 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8870 fan_control_commands = 0; 8871 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8872 "fan control features disabled by parameter\n"); 8873 } 8874 8875 /* update fan_control_desired_level */ 8876 if (fan_status_access_mode != TPACPI_FAN_NONE) 8877 fan_get_status_safe(NULL); 8878 8879 if (fan_status_access_mode != TPACPI_FAN_NONE || 8880 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8881 if (tp_features.second_fan) { 8882 /* attach second fan tachometer */ 8883 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8884 &dev_attr_fan2_input.attr; 8885 } 8886 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8887 &fan_attr_group); 8888 if (rc < 0) 8889 return rc; 8890 8891 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8892 &driver_attr_fan_watchdog); 8893 if (rc < 0) { 8894 sysfs_remove_group(&tpacpi_hwmon->kobj, 8895 &fan_attr_group); 8896 return rc; 8897 } 8898 return 0; 8899 } else 8900 return 1; 8901 } 8902 8903 static void fan_exit(void) 8904 { 8905 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8906 "cancelling any pending fan watchdog tasks\n"); 8907 8908 /* FIXME: can we really do this unconditionally? */ 8909 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8910 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8911 &driver_attr_fan_watchdog); 8912 8913 cancel_delayed_work(&fan_watchdog_task); 8914 flush_workqueue(tpacpi_wq); 8915 } 8916 8917 static void fan_suspend(void) 8918 { 8919 int rc; 8920 8921 if (!fan_control_allowed) 8922 return; 8923 8924 /* Store fan status in cache */ 8925 fan_control_resume_level = 0; 8926 rc = fan_get_status_safe(&fan_control_resume_level); 8927 if (rc < 0) 8928 pr_notice("failed to read fan level for later restore during resume: %d\n", 8929 rc); 8930 8931 /* if it is undefined, don't attempt to restore it. 8932 * KEEP THIS LAST */ 8933 if (tp_features.fan_ctrl_status_undef) 8934 fan_control_resume_level = 0; 8935 } 8936 8937 static void fan_resume(void) 8938 { 8939 u8 current_level = 7; 8940 bool do_set = false; 8941 int rc; 8942 8943 /* DSDT *always* updates status on resume */ 8944 tp_features.fan_ctrl_status_undef = 0; 8945 8946 if (!fan_control_allowed || 8947 !fan_control_resume_level || 8948 (fan_get_status_safe(¤t_level) < 0)) 8949 return; 8950 8951 switch (fan_control_access_mode) { 8952 case TPACPI_FAN_WR_ACPI_SFAN: 8953 /* never decrease fan level */ 8954 do_set = (fan_control_resume_level > current_level); 8955 break; 8956 case TPACPI_FAN_WR_ACPI_FANS: 8957 case TPACPI_FAN_WR_TPEC: 8958 /* never decrease fan level, scale is: 8959 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8960 * 8961 * We expect the firmware to set either 7 or AUTO, but we 8962 * handle FULLSPEED out of paranoia. 8963 * 8964 * So, we can safely only restore FULLSPEED or 7, anything 8965 * else could slow the fan. Restoring AUTO is useless, at 8966 * best that's exactly what the DSDT already set (it is the 8967 * slower it uses). 8968 * 8969 * Always keep in mind that the DSDT *will* have set the 8970 * fans to what the vendor supposes is the best level. We 8971 * muck with it only to speed the fan up. 8972 */ 8973 if (fan_control_resume_level != 7 && 8974 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8975 return; 8976 else 8977 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8978 (current_level != fan_control_resume_level); 8979 break; 8980 default: 8981 return; 8982 } 8983 if (do_set) { 8984 pr_notice("restoring fan level to 0x%02x\n", 8985 fan_control_resume_level); 8986 rc = fan_set_level_safe(fan_control_resume_level); 8987 if (rc < 0) 8988 pr_notice("failed to restore fan level: %d\n", rc); 8989 } 8990 } 8991 8992 static int fan_read(struct seq_file *m) 8993 { 8994 int rc; 8995 u8 status; 8996 unsigned int speed = 0; 8997 8998 switch (fan_status_access_mode) { 8999 case TPACPI_FAN_RD_ACPI_GFAN: 9000 /* 570, 600e/x, 770e, 770x */ 9001 rc = fan_get_status_safe(&status); 9002 if (rc < 0) 9003 return rc; 9004 9005 seq_printf(m, "status:\t\t%s\n" 9006 "level:\t\t%d\n", 9007 (status != 0) ? "enabled" : "disabled", status); 9008 break; 9009 9010 case TPACPI_FAN_RD_TPEC: 9011 /* all except 570, 600e/x, 770e, 770x */ 9012 rc = fan_get_status_safe(&status); 9013 if (rc < 0) 9014 return rc; 9015 9016 seq_printf(m, "status:\t\t%s\n", 9017 (status != 0) ? "enabled" : "disabled"); 9018 9019 rc = fan_get_speed(&speed); 9020 if (rc < 0) 9021 return rc; 9022 9023 seq_printf(m, "speed:\t\t%d\n", speed); 9024 9025 if (status & TP_EC_FAN_FULLSPEED) 9026 /* Disengaged mode takes precedence */ 9027 seq_printf(m, "level:\t\tdisengaged\n"); 9028 else if (status & TP_EC_FAN_AUTO) 9029 seq_printf(m, "level:\t\tauto\n"); 9030 else 9031 seq_printf(m, "level:\t\t%d\n", status); 9032 break; 9033 9034 case TPACPI_FAN_NONE: 9035 default: 9036 seq_printf(m, "status:\t\tnot supported\n"); 9037 } 9038 9039 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9040 seq_printf(m, "commands:\tlevel <level>"); 9041 9042 switch (fan_control_access_mode) { 9043 case TPACPI_FAN_WR_ACPI_SFAN: 9044 seq_printf(m, " (<level> is 0-7)\n"); 9045 break; 9046 9047 default: 9048 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9049 break; 9050 } 9051 } 9052 9053 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9054 seq_printf(m, "commands:\tenable, disable\n" 9055 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9056 9057 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9058 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9059 9060 return 0; 9061 } 9062 9063 static int fan_write_cmd_level(const char *cmd, int *rc) 9064 { 9065 int level; 9066 9067 if (strlencmp(cmd, "level auto") == 0) 9068 level = TP_EC_FAN_AUTO; 9069 else if ((strlencmp(cmd, "level disengaged") == 0) | 9070 (strlencmp(cmd, "level full-speed") == 0)) 9071 level = TP_EC_FAN_FULLSPEED; 9072 else if (sscanf(cmd, "level %d", &level) != 1) 9073 return 0; 9074 9075 *rc = fan_set_level_safe(level); 9076 if (*rc == -ENXIO) 9077 pr_err("level command accepted for unsupported access mode %d\n", 9078 fan_control_access_mode); 9079 else if (!*rc) 9080 tpacpi_disclose_usertask("procfs fan", 9081 "set level to %d\n", level); 9082 9083 return 1; 9084 } 9085 9086 static int fan_write_cmd_enable(const char *cmd, int *rc) 9087 { 9088 if (strlencmp(cmd, "enable") != 0) 9089 return 0; 9090 9091 *rc = fan_set_enable(); 9092 if (*rc == -ENXIO) 9093 pr_err("enable command accepted for unsupported access mode %d\n", 9094 fan_control_access_mode); 9095 else if (!*rc) 9096 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9097 9098 return 1; 9099 } 9100 9101 static int fan_write_cmd_disable(const char *cmd, int *rc) 9102 { 9103 if (strlencmp(cmd, "disable") != 0) 9104 return 0; 9105 9106 *rc = fan_set_disable(); 9107 if (*rc == -ENXIO) 9108 pr_err("disable command accepted for unsupported access mode %d\n", 9109 fan_control_access_mode); 9110 else if (!*rc) 9111 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9112 9113 return 1; 9114 } 9115 9116 static int fan_write_cmd_speed(const char *cmd, int *rc) 9117 { 9118 int speed; 9119 9120 /* TODO: 9121 * Support speed <low> <medium> <high> ? */ 9122 9123 if (sscanf(cmd, "speed %d", &speed) != 1) 9124 return 0; 9125 9126 *rc = fan_set_speed(speed); 9127 if (*rc == -ENXIO) 9128 pr_err("speed command accepted for unsupported access mode %d\n", 9129 fan_control_access_mode); 9130 else if (!*rc) 9131 tpacpi_disclose_usertask("procfs fan", 9132 "set speed to %d\n", speed); 9133 9134 return 1; 9135 } 9136 9137 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9138 { 9139 int interval; 9140 9141 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9142 return 0; 9143 9144 if (interval < 0 || interval > 120) 9145 *rc = -EINVAL; 9146 else { 9147 fan_watchdog_maxinterval = interval; 9148 tpacpi_disclose_usertask("procfs fan", 9149 "set watchdog timer to %d\n", 9150 interval); 9151 } 9152 9153 return 1; 9154 } 9155 9156 static int fan_write(char *buf) 9157 { 9158 char *cmd; 9159 int rc = 0; 9160 9161 while (!rc && (cmd = strsep(&buf, ","))) { 9162 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9163 fan_write_cmd_level(cmd, &rc)) && 9164 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9165 (fan_write_cmd_enable(cmd, &rc) || 9166 fan_write_cmd_disable(cmd, &rc) || 9167 fan_write_cmd_watchdog(cmd, &rc))) && 9168 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9169 fan_write_cmd_speed(cmd, &rc)) 9170 ) 9171 rc = -EINVAL; 9172 else if (!rc) 9173 fan_watchdog_reset(); 9174 } 9175 9176 return rc; 9177 } 9178 9179 static struct ibm_struct fan_driver_data = { 9180 .name = "fan", 9181 .read = fan_read, 9182 .write = fan_write, 9183 .exit = fan_exit, 9184 .suspend = fan_suspend, 9185 .resume = fan_resume, 9186 }; 9187 9188 /************************************************************************* 9189 * Mute LED subdriver 9190 */ 9191 9192 #define TPACPI_LED_MAX 2 9193 9194 struct tp_led_table { 9195 acpi_string name; 9196 int on_value; 9197 int off_value; 9198 int state; 9199 }; 9200 9201 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9202 [LED_AUDIO_MUTE] = { 9203 .name = "SSMS", 9204 .on_value = 1, 9205 .off_value = 0, 9206 }, 9207 [LED_AUDIO_MICMUTE] = { 9208 .name = "MMTS", 9209 .on_value = 2, 9210 .off_value = 0, 9211 }, 9212 }; 9213 9214 static int mute_led_on_off(struct tp_led_table *t, bool state) 9215 { 9216 acpi_handle temp; 9217 int output; 9218 9219 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9220 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9221 return -EIO; 9222 } 9223 9224 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9225 state ? t->on_value : t->off_value)) 9226 return -EIO; 9227 9228 t->state = state; 9229 return state; 9230 } 9231 9232 static int tpacpi_led_set(int whichled, bool on) 9233 { 9234 struct tp_led_table *t; 9235 9236 t = &led_tables[whichled]; 9237 if (t->state < 0 || t->state == on) 9238 return t->state; 9239 return mute_led_on_off(t, on); 9240 } 9241 9242 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9243 enum led_brightness brightness) 9244 { 9245 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9246 } 9247 9248 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9249 enum led_brightness brightness) 9250 { 9251 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9252 } 9253 9254 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9255 [LED_AUDIO_MUTE] = { 9256 .name = "platform::mute", 9257 .max_brightness = 1, 9258 .brightness_set_blocking = tpacpi_led_mute_set, 9259 .default_trigger = "audio-mute", 9260 }, 9261 [LED_AUDIO_MICMUTE] = { 9262 .name = "platform::micmute", 9263 .max_brightness = 1, 9264 .brightness_set_blocking = tpacpi_led_micmute_set, 9265 .default_trigger = "audio-micmute", 9266 }, 9267 }; 9268 9269 static int mute_led_init(struct ibm_init_struct *iibm) 9270 { 9271 acpi_handle temp; 9272 int i, err; 9273 9274 for (i = 0; i < TPACPI_LED_MAX; i++) { 9275 struct tp_led_table *t = &led_tables[i]; 9276 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9277 t->state = -ENODEV; 9278 continue; 9279 } 9280 9281 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9282 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9283 if (err < 0) { 9284 while (i--) 9285 led_classdev_unregister(&mute_led_cdev[i]); 9286 return err; 9287 } 9288 } 9289 return 0; 9290 } 9291 9292 static void mute_led_exit(void) 9293 { 9294 int i; 9295 9296 for (i = 0; i < TPACPI_LED_MAX; i++) { 9297 led_classdev_unregister(&mute_led_cdev[i]); 9298 tpacpi_led_set(i, false); 9299 } 9300 } 9301 9302 static void mute_led_resume(void) 9303 { 9304 int i; 9305 9306 for (i = 0; i < TPACPI_LED_MAX; i++) { 9307 struct tp_led_table *t = &led_tables[i]; 9308 if (t->state >= 0) 9309 mute_led_on_off(t, t->state); 9310 } 9311 } 9312 9313 static struct ibm_struct mute_led_driver_data = { 9314 .name = "mute_led", 9315 .exit = mute_led_exit, 9316 .resume = mute_led_resume, 9317 }; 9318 9319 /* 9320 * Battery Wear Control Driver 9321 * Contact: Ognjen Galic <smclt30p@gmail.com> 9322 */ 9323 9324 /* Metadata */ 9325 9326 #define GET_START "BCTG" 9327 #define SET_START "BCCS" 9328 #define GET_STOP "BCSG" 9329 #define SET_STOP "BCSS" 9330 9331 enum { 9332 BAT_ANY = 0, 9333 BAT_PRIMARY = 1, 9334 BAT_SECONDARY = 2 9335 }; 9336 9337 enum { 9338 /* Error condition bit */ 9339 METHOD_ERR = BIT(31), 9340 }; 9341 9342 enum { 9343 /* This is used in the get/set helpers */ 9344 THRESHOLD_START, 9345 THRESHOLD_STOP, 9346 }; 9347 9348 struct tpacpi_battery_data { 9349 int charge_start; 9350 int start_support; 9351 int charge_stop; 9352 int stop_support; 9353 }; 9354 9355 struct tpacpi_battery_driver_data { 9356 struct tpacpi_battery_data batteries[3]; 9357 int individual_addressing; 9358 }; 9359 9360 static struct tpacpi_battery_driver_data battery_info; 9361 9362 /* ACPI helpers/functions/probes */ 9363 9364 /** 9365 * This evaluates a ACPI method call specific to the battery 9366 * ACPI extension. The specifics are that an error is marked 9367 * in the 32rd bit of the response, so we just check that here. 9368 */ 9369 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9370 { 9371 int response; 9372 9373 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9374 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9375 return AE_ERROR; 9376 } 9377 if (response & METHOD_ERR) { 9378 acpi_handle_err(hkey_handle, 9379 "%s evaluated but flagged as error", method); 9380 return AE_ERROR; 9381 } 9382 *ret = response; 9383 return AE_OK; 9384 } 9385 9386 static int tpacpi_battery_get(int what, int battery, int *ret) 9387 { 9388 switch (what) { 9389 case THRESHOLD_START: 9390 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9391 return -ENODEV; 9392 9393 /* The value is in the low 8 bits of the response */ 9394 *ret = *ret & 0xFF; 9395 return 0; 9396 case THRESHOLD_STOP: 9397 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9398 return -ENODEV; 9399 /* Value is in lower 8 bits */ 9400 *ret = *ret & 0xFF; 9401 /* 9402 * On the stop value, if we return 0 that 9403 * does not make any sense. 0 means Default, which 9404 * means that charging stops at 100%, so we return 9405 * that. 9406 */ 9407 if (*ret == 0) 9408 *ret = 100; 9409 return 0; 9410 default: 9411 pr_crit("wrong parameter: %d", what); 9412 return -EINVAL; 9413 } 9414 } 9415 9416 static int tpacpi_battery_set(int what, int battery, int value) 9417 { 9418 int param, ret; 9419 /* The first 8 bits are the value of the threshold */ 9420 param = value; 9421 /* The battery ID is in bits 8-9, 2 bits */ 9422 param |= battery << 8; 9423 9424 switch (what) { 9425 case THRESHOLD_START: 9426 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9427 pr_err("failed to set charge threshold on battery %d", 9428 battery); 9429 return -ENODEV; 9430 } 9431 return 0; 9432 case THRESHOLD_STOP: 9433 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9434 pr_err("failed to set stop threshold: %d", battery); 9435 return -ENODEV; 9436 } 9437 return 0; 9438 default: 9439 pr_crit("wrong parameter: %d", what); 9440 return -EINVAL; 9441 } 9442 } 9443 9444 static int tpacpi_battery_probe(int battery) 9445 { 9446 int ret = 0; 9447 9448 memset(&battery_info.batteries[battery], 0, 9449 sizeof(battery_info.batteries[battery])); 9450 9451 /* 9452 * 1) Get the current start threshold 9453 * 2) Check for support 9454 * 3) Get the current stop threshold 9455 * 4) Check for support 9456 */ 9457 if (acpi_has_method(hkey_handle, GET_START)) { 9458 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9459 pr_err("Error probing battery %d\n", battery); 9460 return -ENODEV; 9461 } 9462 /* Individual addressing is in bit 9 */ 9463 if (ret & BIT(9)) 9464 battery_info.individual_addressing = true; 9465 /* Support is marked in bit 8 */ 9466 if (ret & BIT(8)) 9467 battery_info.batteries[battery].start_support = 1; 9468 else 9469 return -ENODEV; 9470 if (tpacpi_battery_get(THRESHOLD_START, battery, 9471 &battery_info.batteries[battery].charge_start)) { 9472 pr_err("Error probing battery %d\n", battery); 9473 return -ENODEV; 9474 } 9475 } 9476 if (acpi_has_method(hkey_handle, GET_STOP)) { 9477 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9478 pr_err("Error probing battery stop; %d\n", battery); 9479 return -ENODEV; 9480 } 9481 /* Support is marked in bit 8 */ 9482 if (ret & BIT(8)) 9483 battery_info.batteries[battery].stop_support = 1; 9484 else 9485 return -ENODEV; 9486 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9487 &battery_info.batteries[battery].charge_stop)) { 9488 pr_err("Error probing battery stop: %d\n", battery); 9489 return -ENODEV; 9490 } 9491 } 9492 pr_info("battery %d registered (start %d, stop %d)", 9493 battery, 9494 battery_info.batteries[battery].charge_start, 9495 battery_info.batteries[battery].charge_stop); 9496 9497 return 0; 9498 } 9499 9500 /* General helper functions */ 9501 9502 static int tpacpi_battery_get_id(const char *battery_name) 9503 { 9504 9505 if (strcmp(battery_name, "BAT0") == 0 || 9506 tp_features.battery_force_primary) 9507 return BAT_PRIMARY; 9508 if (strcmp(battery_name, "BAT1") == 0) 9509 return BAT_SECONDARY; 9510 /* 9511 * If for some reason the battery is not BAT0 nor is it 9512 * BAT1, we will assume it's the default, first battery, 9513 * AKA primary. 9514 */ 9515 pr_warn("unknown battery %s, assuming primary", battery_name); 9516 return BAT_PRIMARY; 9517 } 9518 9519 /* sysfs interface */ 9520 9521 static ssize_t tpacpi_battery_store(int what, 9522 struct device *dev, 9523 const char *buf, size_t count) 9524 { 9525 struct power_supply *supply = to_power_supply(dev); 9526 unsigned long value; 9527 int battery, rval; 9528 /* 9529 * Some systems have support for more than 9530 * one battery. If that is the case, 9531 * tpacpi_battery_probe marked that addressing 9532 * them individually is supported, so we do that 9533 * based on the device struct. 9534 * 9535 * On systems that are not supported, we assume 9536 * the primary as most of the ACPI calls fail 9537 * with "Any Battery" as the parameter. 9538 */ 9539 if (battery_info.individual_addressing) 9540 /* BAT_PRIMARY or BAT_SECONDARY */ 9541 battery = tpacpi_battery_get_id(supply->desc->name); 9542 else 9543 battery = BAT_PRIMARY; 9544 9545 rval = kstrtoul(buf, 10, &value); 9546 if (rval) 9547 return rval; 9548 9549 switch (what) { 9550 case THRESHOLD_START: 9551 if (!battery_info.batteries[battery].start_support) 9552 return -ENODEV; 9553 /* valid values are [0, 99] */ 9554 if (value > 99) 9555 return -EINVAL; 9556 if (value > battery_info.batteries[battery].charge_stop) 9557 return -EINVAL; 9558 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9559 return -ENODEV; 9560 battery_info.batteries[battery].charge_start = value; 9561 return count; 9562 9563 case THRESHOLD_STOP: 9564 if (!battery_info.batteries[battery].stop_support) 9565 return -ENODEV; 9566 /* valid values are [1, 100] */ 9567 if (value < 1 || value > 100) 9568 return -EINVAL; 9569 if (value < battery_info.batteries[battery].charge_start) 9570 return -EINVAL; 9571 battery_info.batteries[battery].charge_stop = value; 9572 /* 9573 * When 100 is passed to stop, we need to flip 9574 * it to 0 as that the EC understands that as 9575 * "Default", which will charge to 100% 9576 */ 9577 if (value == 100) 9578 value = 0; 9579 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9580 return -EINVAL; 9581 return count; 9582 default: 9583 pr_crit("Wrong parameter: %d", what); 9584 return -EINVAL; 9585 } 9586 return count; 9587 } 9588 9589 static ssize_t tpacpi_battery_show(int what, 9590 struct device *dev, 9591 char *buf) 9592 { 9593 struct power_supply *supply = to_power_supply(dev); 9594 int ret, battery; 9595 /* 9596 * Some systems have support for more than 9597 * one battery. If that is the case, 9598 * tpacpi_battery_probe marked that addressing 9599 * them individually is supported, so we; 9600 * based on the device struct. 9601 * 9602 * On systems that are not supported, we assume 9603 * the primary as most of the ACPI calls fail 9604 * with "Any Battery" as the parameter. 9605 */ 9606 if (battery_info.individual_addressing) 9607 /* BAT_PRIMARY or BAT_SECONDARY */ 9608 battery = tpacpi_battery_get_id(supply->desc->name); 9609 else 9610 battery = BAT_PRIMARY; 9611 if (tpacpi_battery_get(what, battery, &ret)) 9612 return -ENODEV; 9613 return sprintf(buf, "%d\n", ret); 9614 } 9615 9616 static ssize_t charge_control_start_threshold_show(struct device *device, 9617 struct device_attribute *attr, 9618 char *buf) 9619 { 9620 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9621 } 9622 9623 static ssize_t charge_control_end_threshold_show(struct device *device, 9624 struct device_attribute *attr, 9625 char *buf) 9626 { 9627 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9628 } 9629 9630 static ssize_t charge_control_start_threshold_store(struct device *dev, 9631 struct device_attribute *attr, 9632 const char *buf, size_t count) 9633 { 9634 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9635 } 9636 9637 static ssize_t charge_control_end_threshold_store(struct device *dev, 9638 struct device_attribute *attr, 9639 const char *buf, size_t count) 9640 { 9641 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9642 } 9643 9644 static DEVICE_ATTR_RW(charge_control_start_threshold); 9645 static DEVICE_ATTR_RW(charge_control_end_threshold); 9646 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9647 charge_start_threshold, 9648 0644, 9649 charge_control_start_threshold_show, 9650 charge_control_start_threshold_store 9651 ); 9652 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9653 charge_stop_threshold, 9654 0644, 9655 charge_control_end_threshold_show, 9656 charge_control_end_threshold_store 9657 ); 9658 9659 static struct attribute *tpacpi_battery_attrs[] = { 9660 &dev_attr_charge_control_start_threshold.attr, 9661 &dev_attr_charge_control_end_threshold.attr, 9662 &dev_attr_charge_start_threshold.attr, 9663 &dev_attr_charge_stop_threshold.attr, 9664 NULL, 9665 }; 9666 9667 ATTRIBUTE_GROUPS(tpacpi_battery); 9668 9669 /* ACPI battery hooking */ 9670 9671 static int tpacpi_battery_add(struct power_supply *battery) 9672 { 9673 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9674 9675 if (tpacpi_battery_probe(batteryid)) 9676 return -ENODEV; 9677 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9678 return -ENODEV; 9679 return 0; 9680 } 9681 9682 static int tpacpi_battery_remove(struct power_supply *battery) 9683 { 9684 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9685 return 0; 9686 } 9687 9688 static struct acpi_battery_hook battery_hook = { 9689 .add_battery = tpacpi_battery_add, 9690 .remove_battery = tpacpi_battery_remove, 9691 .name = "ThinkPad Battery Extension", 9692 }; 9693 9694 /* Subdriver init/exit */ 9695 9696 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9697 /* 9698 * Individual addressing is broken on models that expose the 9699 * primary battery as BAT1. 9700 */ 9701 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9702 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9703 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9704 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9705 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9706 }; 9707 9708 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9709 { 9710 memset(&battery_info, 0, sizeof(battery_info)); 9711 9712 tp_features.battery_force_primary = tpacpi_check_quirks( 9713 battery_quirk_table, 9714 ARRAY_SIZE(battery_quirk_table)); 9715 9716 battery_hook_register(&battery_hook); 9717 return 0; 9718 } 9719 9720 static void tpacpi_battery_exit(void) 9721 { 9722 battery_hook_unregister(&battery_hook); 9723 } 9724 9725 static struct ibm_struct battery_driver_data = { 9726 .name = "battery", 9727 .exit = tpacpi_battery_exit, 9728 }; 9729 9730 /************************************************************************* 9731 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9732 */ 9733 9734 static int lcdshadow_state; 9735 9736 static int lcdshadow_on_off(bool state) 9737 { 9738 acpi_handle set_shadow_handle; 9739 int output; 9740 9741 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9742 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9743 return -EIO; 9744 } 9745 9746 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9747 return -EIO; 9748 9749 lcdshadow_state = state; 9750 return 0; 9751 } 9752 9753 static int lcdshadow_set(bool on) 9754 { 9755 if (lcdshadow_state < 0) 9756 return lcdshadow_state; 9757 if (lcdshadow_state == on) 9758 return 0; 9759 return lcdshadow_on_off(on); 9760 } 9761 9762 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9763 { 9764 acpi_handle get_shadow_handle; 9765 int output; 9766 9767 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9768 lcdshadow_state = -ENODEV; 9769 return 0; 9770 } 9771 9772 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9773 lcdshadow_state = -EIO; 9774 return -EIO; 9775 } 9776 if (!(output & 0x10000)) { 9777 lcdshadow_state = -ENODEV; 9778 return 0; 9779 } 9780 lcdshadow_state = output & 0x1; 9781 9782 return 0; 9783 } 9784 9785 static void lcdshadow_resume(void) 9786 { 9787 if (lcdshadow_state >= 0) 9788 lcdshadow_on_off(lcdshadow_state); 9789 } 9790 9791 static int lcdshadow_read(struct seq_file *m) 9792 { 9793 if (lcdshadow_state < 0) { 9794 seq_puts(m, "status:\t\tnot supported\n"); 9795 } else { 9796 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9797 seq_puts(m, "commands:\t0, 1\n"); 9798 } 9799 9800 return 0; 9801 } 9802 9803 static int lcdshadow_write(char *buf) 9804 { 9805 char *cmd; 9806 int res, state = -EINVAL; 9807 9808 if (lcdshadow_state < 0) 9809 return -ENODEV; 9810 9811 while ((cmd = strsep(&buf, ","))) { 9812 res = kstrtoint(cmd, 10, &state); 9813 if (res < 0) 9814 return res; 9815 } 9816 9817 if (state >= 2 || state < 0) 9818 return -EINVAL; 9819 9820 return lcdshadow_set(state); 9821 } 9822 9823 static struct ibm_struct lcdshadow_driver_data = { 9824 .name = "lcdshadow", 9825 .resume = lcdshadow_resume, 9826 .read = lcdshadow_read, 9827 .write = lcdshadow_write, 9828 }; 9829 9830 /************************************************************************* 9831 * DYTC subdriver, for the Lenovo lapmode feature 9832 */ 9833 9834 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9835 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9836 9837 static bool dytc_lapmode; 9838 9839 static void dytc_lapmode_notify_change(void) 9840 { 9841 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9842 } 9843 9844 static int dytc_command(int command, int *output) 9845 { 9846 acpi_handle dytc_handle; 9847 9848 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9849 /* Platform doesn't support DYTC */ 9850 return -ENODEV; 9851 } 9852 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9853 return -EIO; 9854 return 0; 9855 } 9856 9857 static int dytc_lapmode_get(bool *state) 9858 { 9859 int output, err; 9860 9861 err = dytc_command(DYTC_CMD_GET, &output); 9862 if (err) 9863 return err; 9864 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9865 return 0; 9866 } 9867 9868 static void dytc_lapmode_refresh(void) 9869 { 9870 bool new_state; 9871 int err; 9872 9873 err = dytc_lapmode_get(&new_state); 9874 if (err || (new_state == dytc_lapmode)) 9875 return; 9876 9877 dytc_lapmode = new_state; 9878 dytc_lapmode_notify_change(); 9879 } 9880 9881 /* sysfs lapmode entry */ 9882 static ssize_t dytc_lapmode_show(struct device *dev, 9883 struct device_attribute *attr, 9884 char *buf) 9885 { 9886 return snprintf(buf, PAGE_SIZE, "%d\n", dytc_lapmode); 9887 } 9888 9889 static DEVICE_ATTR_RO(dytc_lapmode); 9890 9891 static struct attribute *dytc_attributes[] = { 9892 &dev_attr_dytc_lapmode.attr, 9893 NULL, 9894 }; 9895 9896 static const struct attribute_group dytc_attr_group = { 9897 .attrs = dytc_attributes, 9898 }; 9899 9900 static int tpacpi_dytc_init(struct ibm_init_struct *iibm) 9901 { 9902 int err; 9903 9904 err = dytc_lapmode_get(&dytc_lapmode); 9905 /* If support isn't available (ENODEV) then don't return an error 9906 * but just don't create the sysfs group 9907 */ 9908 if (err == -ENODEV) 9909 return 0; 9910 /* For all other errors we can flag the failure */ 9911 if (err) 9912 return err; 9913 9914 /* Platform supports this feature - create the group */ 9915 err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9916 return err; 9917 } 9918 9919 static void dytc_exit(void) 9920 { 9921 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9922 } 9923 9924 static struct ibm_struct dytc_driver_data = { 9925 .name = "dytc", 9926 .exit = dytc_exit, 9927 }; 9928 9929 /**************************************************************************** 9930 **************************************************************************** 9931 * 9932 * Infrastructure 9933 * 9934 **************************************************************************** 9935 ****************************************************************************/ 9936 9937 /* 9938 * HKEY event callout for other subdrivers go here 9939 * (yes, it is ugly, but it is quick, safe, and gets the job done 9940 */ 9941 static void tpacpi_driver_event(const unsigned int hkey_event) 9942 { 9943 if (ibm_backlight_device) { 9944 switch (hkey_event) { 9945 case TP_HKEY_EV_BRGHT_UP: 9946 case TP_HKEY_EV_BRGHT_DOWN: 9947 tpacpi_brightness_notify_change(); 9948 } 9949 } 9950 if (alsa_card) { 9951 switch (hkey_event) { 9952 case TP_HKEY_EV_VOL_UP: 9953 case TP_HKEY_EV_VOL_DOWN: 9954 case TP_HKEY_EV_VOL_MUTE: 9955 volume_alsa_notify_change(); 9956 } 9957 } 9958 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9959 enum led_brightness brightness; 9960 9961 mutex_lock(&kbdlight_mutex); 9962 9963 /* 9964 * Check the brightness actually changed, setting the brightness 9965 * through kbdlight_set_level() also triggers this event. 9966 */ 9967 brightness = kbdlight_sysfs_get(NULL); 9968 if (kbdlight_brightness != brightness) { 9969 kbdlight_brightness = brightness; 9970 led_classdev_notify_brightness_hw_changed( 9971 &tpacpi_led_kbdlight.led_classdev, brightness); 9972 } 9973 9974 mutex_unlock(&kbdlight_mutex); 9975 } 9976 9977 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) 9978 dytc_lapmode_refresh(); 9979 9980 } 9981 9982 static void hotkey_driver_event(const unsigned int scancode) 9983 { 9984 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 9985 } 9986 9987 /* --------------------------------------------------------------------- */ 9988 9989 /* /proc support */ 9990 static struct proc_dir_entry *proc_dir; 9991 9992 /* 9993 * Module and infrastructure proble, init and exit handling 9994 */ 9995 9996 static bool force_load; 9997 9998 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 9999 static const char * __init str_supported(int is_supported) 10000 { 10001 static char text_unsupported[] __initdata = "not supported"; 10002 10003 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10004 } 10005 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10006 10007 static void ibm_exit(struct ibm_struct *ibm) 10008 { 10009 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10010 10011 list_del_init(&ibm->all_drivers); 10012 10013 if (ibm->flags.acpi_notify_installed) { 10014 dbg_printk(TPACPI_DBG_EXIT, 10015 "%s: acpi_remove_notify_handler\n", ibm->name); 10016 BUG_ON(!ibm->acpi); 10017 acpi_remove_notify_handler(*ibm->acpi->handle, 10018 ibm->acpi->type, 10019 dispatch_acpi_notify); 10020 ibm->flags.acpi_notify_installed = 0; 10021 } 10022 10023 if (ibm->flags.proc_created) { 10024 dbg_printk(TPACPI_DBG_EXIT, 10025 "%s: remove_proc_entry\n", ibm->name); 10026 remove_proc_entry(ibm->name, proc_dir); 10027 ibm->flags.proc_created = 0; 10028 } 10029 10030 if (ibm->flags.acpi_driver_registered) { 10031 dbg_printk(TPACPI_DBG_EXIT, 10032 "%s: acpi_bus_unregister_driver\n", ibm->name); 10033 BUG_ON(!ibm->acpi); 10034 acpi_bus_unregister_driver(ibm->acpi->driver); 10035 kfree(ibm->acpi->driver); 10036 ibm->acpi->driver = NULL; 10037 ibm->flags.acpi_driver_registered = 0; 10038 } 10039 10040 if (ibm->flags.init_called && ibm->exit) { 10041 ibm->exit(); 10042 ibm->flags.init_called = 0; 10043 } 10044 10045 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10046 } 10047 10048 static int __init ibm_init(struct ibm_init_struct *iibm) 10049 { 10050 int ret; 10051 struct ibm_struct *ibm = iibm->data; 10052 struct proc_dir_entry *entry; 10053 10054 BUG_ON(ibm == NULL); 10055 10056 INIT_LIST_HEAD(&ibm->all_drivers); 10057 10058 if (ibm->flags.experimental && !experimental) 10059 return 0; 10060 10061 dbg_printk(TPACPI_DBG_INIT, 10062 "probing for %s\n", ibm->name); 10063 10064 if (iibm->init) { 10065 ret = iibm->init(iibm); 10066 if (ret > 0) 10067 return 0; /* probe failed */ 10068 if (ret) 10069 return ret; 10070 10071 ibm->flags.init_called = 1; 10072 } 10073 10074 if (ibm->acpi) { 10075 if (ibm->acpi->hid) { 10076 ret = register_tpacpi_subdriver(ibm); 10077 if (ret) 10078 goto err_out; 10079 } 10080 10081 if (ibm->acpi->notify) { 10082 ret = setup_acpi_notify(ibm); 10083 if (ret == -ENODEV) { 10084 pr_notice("disabling subdriver %s\n", 10085 ibm->name); 10086 ret = 0; 10087 goto err_out; 10088 } 10089 if (ret < 0) 10090 goto err_out; 10091 } 10092 } 10093 10094 dbg_printk(TPACPI_DBG_INIT, 10095 "%s installed\n", ibm->name); 10096 10097 if (ibm->read) { 10098 umode_t mode = iibm->base_procfs_mode; 10099 10100 if (!mode) 10101 mode = S_IRUGO; 10102 if (ibm->write) 10103 mode |= S_IWUSR; 10104 entry = proc_create_data(ibm->name, mode, proc_dir, 10105 &dispatch_proc_ops, ibm); 10106 if (!entry) { 10107 pr_err("unable to create proc entry %s\n", ibm->name); 10108 ret = -ENODEV; 10109 goto err_out; 10110 } 10111 ibm->flags.proc_created = 1; 10112 } 10113 10114 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10115 10116 return 0; 10117 10118 err_out: 10119 dbg_printk(TPACPI_DBG_INIT, 10120 "%s: at error exit path with result %d\n", 10121 ibm->name, ret); 10122 10123 ibm_exit(ibm); 10124 return (ret < 0) ? ret : 0; 10125 } 10126 10127 /* Probing */ 10128 10129 static char __init tpacpi_parse_fw_id(const char * const s, 10130 u32 *model, u16 *release) 10131 { 10132 int i; 10133 10134 if (!s || strlen(s) < 8) 10135 goto invalid; 10136 10137 for (i = 0; i < 8; i++) 10138 if (!((s[i] >= '0' && s[i] <= '9') || 10139 (s[i] >= 'A' && s[i] <= 'Z'))) 10140 goto invalid; 10141 10142 /* 10143 * Most models: xxyTkkWW (#.##c) 10144 * Ancient 570/600 and -SL lacks (#.##c) 10145 */ 10146 if (s[3] == 'T' || s[3] == 'N') { 10147 *model = TPID(s[0], s[1]); 10148 *release = TPVER(s[4], s[5]); 10149 return s[2]; 10150 10151 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10152 } else if (s[4] == 'T' || s[4] == 'N') { 10153 *model = TPID3(s[0], s[1], s[2]); 10154 *release = TPVER(s[5], s[6]); 10155 return s[3]; 10156 } 10157 10158 invalid: 10159 return '\0'; 10160 } 10161 10162 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10163 { 10164 char *ec_fw_string = (char *) private; 10165 const char *dmi_data = (const char *)dm; 10166 /* 10167 * ThinkPad Embedded Controller Program Table on newer models 10168 * 10169 * Offset | Name | Width | Description 10170 * ---------------------------------------------------- 10171 * 0x00 | Type | BYTE | 0x8C 10172 * 0x01 | Length | BYTE | 10173 * 0x02 | Handle | WORD | Varies 10174 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10175 * 0x0A | OEM struct offset | BYTE | 0x0B 10176 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10177 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10178 * 0x0D | ECP version ID | STR ID | 10179 * 0x0E | ECP release date | STR ID | 10180 */ 10181 10182 /* Return if data structure not match */ 10183 if (dm->type != 140 || dm->length < 0x0F || 10184 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10185 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10186 dmi_data[0x0C] != 0x01) 10187 return; 10188 10189 /* fwstr is the first 8byte string */ 10190 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10191 } 10192 10193 /* returns 0 - probe ok, or < 0 - probe error. 10194 * Probe ok doesn't mean thinkpad found. 10195 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10196 static int __must_check __init get_thinkpad_model_data( 10197 struct thinkpad_id_data *tp) 10198 { 10199 const struct dmi_device *dev = NULL; 10200 char ec_fw_string[18] = {0}; 10201 char const *s; 10202 char t; 10203 10204 if (!tp) 10205 return -EINVAL; 10206 10207 memset(tp, 0, sizeof(*tp)); 10208 10209 if (dmi_name_in_vendors("IBM")) 10210 tp->vendor = PCI_VENDOR_ID_IBM; 10211 else if (dmi_name_in_vendors("LENOVO")) 10212 tp->vendor = PCI_VENDOR_ID_LENOVO; 10213 else 10214 return 0; 10215 10216 s = dmi_get_system_info(DMI_BIOS_VERSION); 10217 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10218 if (s && !tp->bios_version_str) 10219 return -ENOMEM; 10220 10221 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10222 t = tpacpi_parse_fw_id(tp->bios_version_str, 10223 &tp->bios_model, &tp->bios_release); 10224 if (t != 'E' && t != 'C') 10225 return 0; 10226 10227 /* 10228 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10229 * X32 or newer, all Z series; Some models must have an 10230 * up-to-date BIOS or they will not be detected. 10231 * 10232 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10233 */ 10234 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10235 if (sscanf(dev->name, 10236 "IBM ThinkPad Embedded Controller -[%17c", 10237 ec_fw_string) == 1) { 10238 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10239 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10240 break; 10241 } 10242 } 10243 10244 /* Newer ThinkPads have different EC program info table */ 10245 if (!ec_fw_string[0]) 10246 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10247 10248 if (ec_fw_string[0]) { 10249 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10250 if (!tp->ec_version_str) 10251 return -ENOMEM; 10252 10253 t = tpacpi_parse_fw_id(ec_fw_string, 10254 &tp->ec_model, &tp->ec_release); 10255 if (t != 'H') { 10256 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10257 ec_fw_string); 10258 pr_notice("please report this to %s\n", TPACPI_MAIL); 10259 } 10260 } 10261 10262 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10263 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10264 tp->model_str = kstrdup(s, GFP_KERNEL); 10265 if (!tp->model_str) 10266 return -ENOMEM; 10267 } else { 10268 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10269 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10270 tp->model_str = kstrdup(s, GFP_KERNEL); 10271 if (!tp->model_str) 10272 return -ENOMEM; 10273 } 10274 } 10275 10276 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10277 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10278 if (s && !tp->nummodel_str) 10279 return -ENOMEM; 10280 10281 return 0; 10282 } 10283 10284 static int __init probe_for_thinkpad(void) 10285 { 10286 int is_thinkpad; 10287 10288 if (acpi_disabled) 10289 return -ENODEV; 10290 10291 /* It would be dangerous to run the driver in this case */ 10292 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10293 return -ENODEV; 10294 10295 /* 10296 * Non-ancient models have better DMI tagging, but very old models 10297 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10298 */ 10299 is_thinkpad = (thinkpad_id.model_str != NULL) || 10300 (thinkpad_id.ec_model != 0) || 10301 tpacpi_is_fw_known(); 10302 10303 /* The EC handler is required */ 10304 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10305 if (!ec_handle) { 10306 if (is_thinkpad) 10307 pr_err("Not yet supported ThinkPad detected!\n"); 10308 return -ENODEV; 10309 } 10310 10311 if (!is_thinkpad && !force_load) 10312 return -ENODEV; 10313 10314 return 0; 10315 } 10316 10317 static void __init thinkpad_acpi_init_banner(void) 10318 { 10319 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 10320 pr_info("%s\n", TPACPI_URL); 10321 10322 pr_info("ThinkPad BIOS %s, EC %s\n", 10323 (thinkpad_id.bios_version_str) ? 10324 thinkpad_id.bios_version_str : "unknown", 10325 (thinkpad_id.ec_version_str) ? 10326 thinkpad_id.ec_version_str : "unknown"); 10327 10328 BUG_ON(!thinkpad_id.vendor); 10329 10330 if (thinkpad_id.model_str) 10331 pr_info("%s %s, model %s\n", 10332 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 10333 "IBM" : ((thinkpad_id.vendor == 10334 PCI_VENDOR_ID_LENOVO) ? 10335 "Lenovo" : "Unknown vendor"), 10336 thinkpad_id.model_str, 10337 (thinkpad_id.nummodel_str) ? 10338 thinkpad_id.nummodel_str : "unknown"); 10339 } 10340 10341 /* Module init, exit, parameters */ 10342 10343 static struct ibm_init_struct ibms_init[] __initdata = { 10344 { 10345 .data = &thinkpad_acpi_driver_data, 10346 }, 10347 { 10348 .init = hotkey_init, 10349 .data = &hotkey_driver_data, 10350 }, 10351 { 10352 .init = bluetooth_init, 10353 .data = &bluetooth_driver_data, 10354 }, 10355 { 10356 .init = wan_init, 10357 .data = &wan_driver_data, 10358 }, 10359 { 10360 .init = uwb_init, 10361 .data = &uwb_driver_data, 10362 }, 10363 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 10364 { 10365 .init = video_init, 10366 .base_procfs_mode = S_IRUSR, 10367 .data = &video_driver_data, 10368 }, 10369 #endif 10370 { 10371 .init = kbdlight_init, 10372 .data = &kbdlight_driver_data, 10373 }, 10374 { 10375 .init = light_init, 10376 .data = &light_driver_data, 10377 }, 10378 { 10379 .init = cmos_init, 10380 .data = &cmos_driver_data, 10381 }, 10382 { 10383 .init = led_init, 10384 .data = &led_driver_data, 10385 }, 10386 { 10387 .init = beep_init, 10388 .data = &beep_driver_data, 10389 }, 10390 { 10391 .init = thermal_init, 10392 .data = &thermal_driver_data, 10393 }, 10394 { 10395 .init = brightness_init, 10396 .data = &brightness_driver_data, 10397 }, 10398 { 10399 .init = volume_init, 10400 .data = &volume_driver_data, 10401 }, 10402 { 10403 .init = fan_init, 10404 .data = &fan_driver_data, 10405 }, 10406 { 10407 .init = mute_led_init, 10408 .data = &mute_led_driver_data, 10409 }, 10410 { 10411 .init = tpacpi_battery_init, 10412 .data = &battery_driver_data, 10413 }, 10414 { 10415 .init = tpacpi_lcdshadow_init, 10416 .data = &lcdshadow_driver_data, 10417 }, 10418 { 10419 .init = tpacpi_dytc_init, 10420 .data = &dytc_driver_data, 10421 }, 10422 }; 10423 10424 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 10425 { 10426 unsigned int i; 10427 struct ibm_struct *ibm; 10428 10429 if (!kp || !kp->name || !val) 10430 return -EINVAL; 10431 10432 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10433 ibm = ibms_init[i].data; 10434 WARN_ON(ibm == NULL); 10435 10436 if (!ibm || !ibm->name) 10437 continue; 10438 10439 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 10440 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 10441 return -ENOSPC; 10442 strcpy(ibms_init[i].param, val); 10443 return 0; 10444 } 10445 } 10446 10447 return -EINVAL; 10448 } 10449 10450 module_param(experimental, int, 0444); 10451 MODULE_PARM_DESC(experimental, 10452 "Enables experimental features when non-zero"); 10453 10454 module_param_named(debug, dbg_level, uint, 0); 10455 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 10456 10457 module_param(force_load, bool, 0444); 10458 MODULE_PARM_DESC(force_load, 10459 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 10460 10461 module_param_named(fan_control, fan_control_allowed, bool, 0444); 10462 MODULE_PARM_DESC(fan_control, 10463 "Enables setting fan parameters features when true"); 10464 10465 module_param_named(brightness_mode, brightness_mode, uint, 0444); 10466 MODULE_PARM_DESC(brightness_mode, 10467 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 10468 10469 module_param(brightness_enable, uint, 0444); 10470 MODULE_PARM_DESC(brightness_enable, 10471 "Enables backlight control when 1, disables when 0"); 10472 10473 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 10474 module_param_named(volume_mode, volume_mode, uint, 0444); 10475 MODULE_PARM_DESC(volume_mode, 10476 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 10477 10478 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 10479 MODULE_PARM_DESC(volume_capabilities, 10480 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 10481 10482 module_param_named(volume_control, volume_control_allowed, bool, 0444); 10483 MODULE_PARM_DESC(volume_control, 10484 "Enables software override for the console audio control when true"); 10485 10486 module_param_named(software_mute, software_mute_requested, bool, 0444); 10487 MODULE_PARM_DESC(software_mute, 10488 "Request full software mute control"); 10489 10490 /* ALSA module API parameters */ 10491 module_param_named(index, alsa_index, int, 0444); 10492 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 10493 module_param_named(id, alsa_id, charp, 0444); 10494 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 10495 module_param_named(enable, alsa_enable, bool, 0444); 10496 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 10497 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 10498 10499 /* The module parameter can't be read back, that's why 0 is used here */ 10500 #define TPACPI_PARAM(feature) \ 10501 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 10502 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 10503 10504 TPACPI_PARAM(hotkey); 10505 TPACPI_PARAM(bluetooth); 10506 TPACPI_PARAM(video); 10507 TPACPI_PARAM(light); 10508 TPACPI_PARAM(cmos); 10509 TPACPI_PARAM(led); 10510 TPACPI_PARAM(beep); 10511 TPACPI_PARAM(brightness); 10512 TPACPI_PARAM(volume); 10513 TPACPI_PARAM(fan); 10514 10515 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10516 module_param(dbg_wlswemul, uint, 0444); 10517 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 10518 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 10519 MODULE_PARM_DESC(wlsw_state, 10520 "Initial state of the emulated WLSW switch"); 10521 10522 module_param(dbg_bluetoothemul, uint, 0444); 10523 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 10524 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 10525 MODULE_PARM_DESC(bluetooth_state, 10526 "Initial state of the emulated bluetooth switch"); 10527 10528 module_param(dbg_wwanemul, uint, 0444); 10529 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 10530 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 10531 MODULE_PARM_DESC(wwan_state, 10532 "Initial state of the emulated WWAN switch"); 10533 10534 module_param(dbg_uwbemul, uint, 0444); 10535 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 10536 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 10537 MODULE_PARM_DESC(uwb_state, 10538 "Initial state of the emulated UWB switch"); 10539 #endif 10540 10541 static void thinkpad_acpi_module_exit(void) 10542 { 10543 struct ibm_struct *ibm, *itmp; 10544 10545 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 10546 10547 list_for_each_entry_safe_reverse(ibm, itmp, 10548 &tpacpi_all_drivers, 10549 all_drivers) { 10550 ibm_exit(ibm); 10551 } 10552 10553 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 10554 10555 if (tpacpi_inputdev) { 10556 if (tp_features.input_device_registered) 10557 input_unregister_device(tpacpi_inputdev); 10558 else 10559 input_free_device(tpacpi_inputdev); 10560 kfree(hotkey_keycode_map); 10561 } 10562 10563 if (tpacpi_hwmon) 10564 hwmon_device_unregister(tpacpi_hwmon); 10565 10566 if (tpacpi_sensors_pdev) 10567 platform_device_unregister(tpacpi_sensors_pdev); 10568 if (tpacpi_pdev) 10569 platform_device_unregister(tpacpi_pdev); 10570 10571 if (tp_features.sensors_pdrv_attrs_registered) 10572 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 10573 if (tp_features.platform_drv_attrs_registered) 10574 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 10575 10576 if (tp_features.sensors_pdrv_registered) 10577 platform_driver_unregister(&tpacpi_hwmon_pdriver); 10578 10579 if (tp_features.platform_drv_registered) 10580 platform_driver_unregister(&tpacpi_pdriver); 10581 10582 if (proc_dir) 10583 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 10584 10585 if (tpacpi_wq) 10586 destroy_workqueue(tpacpi_wq); 10587 10588 kfree(thinkpad_id.bios_version_str); 10589 kfree(thinkpad_id.ec_version_str); 10590 kfree(thinkpad_id.model_str); 10591 kfree(thinkpad_id.nummodel_str); 10592 } 10593 10594 10595 static int __init thinkpad_acpi_module_init(void) 10596 { 10597 int ret, i; 10598 10599 tpacpi_lifecycle = TPACPI_LIFE_INIT; 10600 10601 /* Driver-level probe */ 10602 10603 ret = get_thinkpad_model_data(&thinkpad_id); 10604 if (ret) { 10605 pr_err("unable to get DMI data: %d\n", ret); 10606 thinkpad_acpi_module_exit(); 10607 return ret; 10608 } 10609 ret = probe_for_thinkpad(); 10610 if (ret) { 10611 thinkpad_acpi_module_exit(); 10612 return ret; 10613 } 10614 10615 /* Driver initialization */ 10616 10617 thinkpad_acpi_init_banner(); 10618 tpacpi_check_outdated_fw(); 10619 10620 TPACPI_ACPIHANDLE_INIT(ecrd); 10621 TPACPI_ACPIHANDLE_INIT(ecwr); 10622 10623 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 10624 if (!tpacpi_wq) { 10625 thinkpad_acpi_module_exit(); 10626 return -ENOMEM; 10627 } 10628 10629 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 10630 if (!proc_dir) { 10631 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 10632 thinkpad_acpi_module_exit(); 10633 return -ENODEV; 10634 } 10635 10636 ret = platform_driver_register(&tpacpi_pdriver); 10637 if (ret) { 10638 pr_err("unable to register main platform driver\n"); 10639 thinkpad_acpi_module_exit(); 10640 return ret; 10641 } 10642 tp_features.platform_drv_registered = 1; 10643 10644 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 10645 if (ret) { 10646 pr_err("unable to register hwmon platform driver\n"); 10647 thinkpad_acpi_module_exit(); 10648 return ret; 10649 } 10650 tp_features.sensors_pdrv_registered = 1; 10651 10652 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 10653 if (!ret) { 10654 tp_features.platform_drv_attrs_registered = 1; 10655 ret = tpacpi_create_driver_attributes( 10656 &tpacpi_hwmon_pdriver.driver); 10657 } 10658 if (ret) { 10659 pr_err("unable to create sysfs driver attributes\n"); 10660 thinkpad_acpi_module_exit(); 10661 return ret; 10662 } 10663 tp_features.sensors_pdrv_attrs_registered = 1; 10664 10665 10666 /* Device initialization */ 10667 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 10668 NULL, 0); 10669 if (IS_ERR(tpacpi_pdev)) { 10670 ret = PTR_ERR(tpacpi_pdev); 10671 tpacpi_pdev = NULL; 10672 pr_err("unable to register platform device\n"); 10673 thinkpad_acpi_module_exit(); 10674 return ret; 10675 } 10676 tpacpi_sensors_pdev = platform_device_register_simple( 10677 TPACPI_HWMON_DRVR_NAME, 10678 -1, NULL, 0); 10679 if (IS_ERR(tpacpi_sensors_pdev)) { 10680 ret = PTR_ERR(tpacpi_sensors_pdev); 10681 tpacpi_sensors_pdev = NULL; 10682 pr_err("unable to register hwmon platform device\n"); 10683 thinkpad_acpi_module_exit(); 10684 return ret; 10685 } 10686 tp_features.sensors_pdev_attrs_registered = 1; 10687 tpacpi_hwmon = hwmon_device_register_with_groups( 10688 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 10689 10690 if (IS_ERR(tpacpi_hwmon)) { 10691 ret = PTR_ERR(tpacpi_hwmon); 10692 tpacpi_hwmon = NULL; 10693 pr_err("unable to register hwmon device\n"); 10694 thinkpad_acpi_module_exit(); 10695 return ret; 10696 } 10697 mutex_init(&tpacpi_inputdev_send_mutex); 10698 tpacpi_inputdev = input_allocate_device(); 10699 if (!tpacpi_inputdev) { 10700 thinkpad_acpi_module_exit(); 10701 return -ENOMEM; 10702 } else { 10703 /* Prepare input device, but don't register */ 10704 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 10705 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 10706 tpacpi_inputdev->id.bustype = BUS_HOST; 10707 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 10708 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 10709 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 10710 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 10711 } 10712 10713 /* Init subdriver dependencies */ 10714 tpacpi_detect_brightness_capabilities(); 10715 10716 /* Init subdrivers */ 10717 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10718 ret = ibm_init(&ibms_init[i]); 10719 if (ret >= 0 && *ibms_init[i].param) 10720 ret = ibms_init[i].data->write(ibms_init[i].param); 10721 if (ret < 0) { 10722 thinkpad_acpi_module_exit(); 10723 return ret; 10724 } 10725 } 10726 10727 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 10728 10729 ret = input_register_device(tpacpi_inputdev); 10730 if (ret < 0) { 10731 pr_err("unable to register input device\n"); 10732 thinkpad_acpi_module_exit(); 10733 return ret; 10734 } else { 10735 tp_features.input_device_registered = 1; 10736 } 10737 10738 return 0; 10739 } 10740 10741 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 10742 10743 /* 10744 * This will autoload the driver in almost every ThinkPad 10745 * in widespread use. 10746 * 10747 * Only _VERY_ old models, like the 240, 240x and 570 lack 10748 * the HKEY event interface. 10749 */ 10750 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 10751 10752 /* 10753 * DMI matching for module autoloading 10754 * 10755 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10756 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 10757 * 10758 * Only models listed in thinkwiki will be supported, so add yours 10759 * if it is not there yet. 10760 */ 10761 #define IBM_BIOS_MODULE_ALIAS(__type) \ 10762 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 10763 10764 /* Ancient thinkpad BIOSes have to be identified by 10765 * BIOS type or model number, and there are far less 10766 * BIOS types than model numbers... */ 10767 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 10768 10769 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 10770 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 10771 MODULE_DESCRIPTION(TPACPI_DESC); 10772 MODULE_VERSION(TPACPI_VERSION); 10773 MODULE_LICENSE("GPL"); 10774 10775 module_init(thinkpad_acpi_module_init); 10776 module_exit(thinkpad_acpi_module_exit); 10777