1 /* 2 * thinkpad_acpi.c - ThinkPad ACPI Extras 3 * 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 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 21 * 02110-1301, USA. 22 */ 23 24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 25 26 #define TPACPI_VERSION "0.25" 27 #define TPACPI_SYSFS_VERSION 0x020700 28 29 /* 30 * Changelog: 31 * 2007-10-20 changelog trimmed down 32 * 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 34 * drivers/misc. 35 * 36 * 2006-11-22 0.13 new maintainer 37 * changelog now lives in git commit history, and will 38 * not be updated further in-file. 39 * 40 * 2005-03-17 0.11 support for 600e, 770x 41 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 42 * 43 * 2005-01-16 0.9 use MODULE_VERSION 44 * thanks to Henrik Brix Andersen <brix@gentoo.org> 45 * fix parameter passing on module loading 46 * thanks to Rusty Russell <rusty@rustcorp.com.au> 47 * thanks to Jim Radford <radford@blackbean.org> 48 * 2004-11-08 0.8 fix init error case, don't return from a macro 49 * thanks to Chris Wright <chrisw@osdl.org> 50 */ 51 52 #include <linux/kernel.h> 53 #include <linux/module.h> 54 #include <linux/init.h> 55 #include <linux/types.h> 56 #include <linux/string.h> 57 #include <linux/list.h> 58 #include <linux/mutex.h> 59 #include <linux/sched.h> 60 #include <linux/kthread.h> 61 #include <linux/freezer.h> 62 #include <linux/delay.h> 63 #include <linux/slab.h> 64 #include <linux/nvram.h> 65 #include <linux/proc_fs.h> 66 #include <linux/seq_file.h> 67 #include <linux/sysfs.h> 68 #include <linux/backlight.h> 69 #include <linux/fb.h> 70 #include <linux/platform_device.h> 71 #include <linux/hwmon.h> 72 #include <linux/hwmon-sysfs.h> 73 #include <linux/input.h> 74 #include <linux/leds.h> 75 #include <linux/rfkill.h> 76 #include <linux/dmi.h> 77 #include <linux/jiffies.h> 78 #include <linux/workqueue.h> 79 #include <linux/acpi.h> 80 #include <linux/pci_ids.h> 81 #include <linux/thinkpad_acpi.h> 82 #include <sound/core.h> 83 #include <sound/control.h> 84 #include <sound/initval.h> 85 #include <linux/uaccess.h> 86 #include <acpi/video.h> 87 88 /* ThinkPad CMOS commands */ 89 #define TP_CMOS_VOLUME_DOWN 0 90 #define TP_CMOS_VOLUME_UP 1 91 #define TP_CMOS_VOLUME_MUTE 2 92 #define TP_CMOS_BRIGHTNESS_UP 4 93 #define TP_CMOS_BRIGHTNESS_DOWN 5 94 #define TP_CMOS_THINKLIGHT_ON 12 95 #define TP_CMOS_THINKLIGHT_OFF 13 96 97 /* NVRAM Addresses */ 98 enum tp_nvram_addr { 99 TP_NVRAM_ADDR_HK2 = 0x57, 100 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 101 TP_NVRAM_ADDR_VIDEO = 0x59, 102 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 103 TP_NVRAM_ADDR_MIXER = 0x60, 104 }; 105 106 /* NVRAM bit masks */ 107 enum { 108 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 109 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 110 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 111 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 112 TP_NVRAM_MASK_THINKLIGHT = 0x10, 113 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 114 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 115 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 116 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 117 TP_NVRAM_MASK_MUTE = 0x40, 118 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 119 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 120 TP_NVRAM_POS_LEVEL_VOLUME = 0, 121 }; 122 123 /* Misc NVRAM-related */ 124 enum { 125 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 126 }; 127 128 /* ACPI HIDs */ 129 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 130 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 131 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 132 #define TPACPI_ACPI_EC_HID "PNP0C09" 133 134 /* Input IDs */ 135 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 136 #define TPACPI_HKEY_INPUT_VERSION 0x4101 137 138 /* ACPI \WGSV commands */ 139 enum { 140 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 141 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 142 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 143 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 144 }; 145 146 /* TP_ACPI_WGSV_GET_STATE bits */ 147 enum { 148 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 149 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 150 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 151 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 152 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 153 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 154 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 155 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 156 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 157 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 158 }; 159 160 /* HKEY events */ 161 enum tpacpi_hkey_event_t { 162 /* Hotkey-related */ 163 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 164 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 165 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 166 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 167 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 168 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 169 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 170 171 /* Reasons for waking up from S3/S4 */ 172 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 173 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 174 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 175 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 176 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 177 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 178 179 /* Auto-sleep after eject request */ 180 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 181 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 182 183 /* Misc bay events */ 184 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 185 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 186 or port replicator */ 187 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 188 dock or port replicator */ 189 190 /* User-interface events */ 191 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 192 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 193 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 194 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 195 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 196 * enter/leave tablet mode 197 */ 198 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 199 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 200 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 201 202 /* Key-related user-interface events */ 203 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 204 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 205 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 206 207 /* Thermal events */ 208 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 209 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 210 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 211 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 212 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */ 213 214 /* AC-related events */ 215 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 216 217 /* Misc */ 218 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 219 }; 220 221 /**************************************************************************** 222 * Main driver 223 */ 224 225 #define TPACPI_NAME "thinkpad" 226 #define TPACPI_DESC "ThinkPad ACPI Extras" 227 #define TPACPI_FILE TPACPI_NAME "_acpi" 228 #define TPACPI_URL "http://ibm-acpi.sf.net/" 229 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 230 231 #define TPACPI_PROC_DIR "ibm" 232 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 233 #define TPACPI_DRVR_NAME TPACPI_FILE 234 #define TPACPI_DRVR_SHORTNAME "tpacpi" 235 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 236 237 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 238 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 239 240 #define TPACPI_MAX_ACPI_ARGS 3 241 242 /* Debugging printk groups */ 243 #define TPACPI_DBG_ALL 0xffff 244 #define TPACPI_DBG_DISCLOSETASK 0x8000 245 #define TPACPI_DBG_INIT 0x0001 246 #define TPACPI_DBG_EXIT 0x0002 247 #define TPACPI_DBG_RFKILL 0x0004 248 #define TPACPI_DBG_HKEY 0x0008 249 #define TPACPI_DBG_FAN 0x0010 250 #define TPACPI_DBG_BRGHT 0x0020 251 #define TPACPI_DBG_MIXER 0x0040 252 253 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 254 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 255 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 256 257 258 /**************************************************************************** 259 * Driver-wide structs and misc. variables 260 */ 261 262 struct ibm_struct; 263 264 struct tp_acpi_drv_struct { 265 const struct acpi_device_id *hid; 266 struct acpi_driver *driver; 267 268 void (*notify) (struct ibm_struct *, u32); 269 acpi_handle *handle; 270 u32 type; 271 struct acpi_device *device; 272 }; 273 274 struct ibm_struct { 275 char *name; 276 277 int (*read) (struct seq_file *); 278 int (*write) (char *); 279 void (*exit) (void); 280 void (*resume) (void); 281 void (*suspend) (void); 282 void (*shutdown) (void); 283 284 struct list_head all_drivers; 285 286 struct tp_acpi_drv_struct *acpi; 287 288 struct { 289 u8 acpi_driver_registered:1; 290 u8 acpi_notify_installed:1; 291 u8 proc_created:1; 292 u8 init_called:1; 293 u8 experimental:1; 294 } flags; 295 }; 296 297 struct ibm_init_struct { 298 char param[32]; 299 300 int (*init) (struct ibm_init_struct *); 301 umode_t base_procfs_mode; 302 struct ibm_struct *data; 303 }; 304 305 static struct { 306 u32 bluetooth:1; 307 u32 hotkey:1; 308 u32 hotkey_mask:1; 309 u32 hotkey_wlsw:1; 310 enum { 311 TP_HOTKEY_TABLET_NONE = 0, 312 TP_HOTKEY_TABLET_USES_MHKG, 313 /* X1 Yoga 2016, seen on BIOS N1FET44W */ 314 TP_HOTKEY_TABLET_USES_CMMD, 315 } hotkey_tablet; 316 u32 kbdlight:1; 317 u32 light:1; 318 u32 light_status:1; 319 u32 bright_acpimode:1; 320 u32 bright_unkfw:1; 321 u32 wan:1; 322 u32 uwb:1; 323 u32 fan_ctrl_status_undef:1; 324 u32 second_fan:1; 325 u32 beep_needs_two_args:1; 326 u32 mixer_no_level_control:1; 327 u32 input_device_registered:1; 328 u32 platform_drv_registered:1; 329 u32 platform_drv_attrs_registered:1; 330 u32 sensors_pdrv_registered:1; 331 u32 sensors_pdrv_attrs_registered:1; 332 u32 sensors_pdev_attrs_registered:1; 333 u32 hotkey_poll_active:1; 334 u32 has_adaptive_kbd:1; 335 } tp_features; 336 337 static struct { 338 u16 hotkey_mask_ff:1; 339 u16 volume_ctrl_forbidden:1; 340 } tp_warned; 341 342 struct thinkpad_id_data { 343 unsigned int vendor; /* ThinkPad vendor: 344 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 345 346 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 347 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 348 349 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ 350 u16 ec_model; 351 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ 352 u16 ec_release; 353 354 char *model_str; /* ThinkPad T43 */ 355 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 356 }; 357 static struct thinkpad_id_data thinkpad_id; 358 359 static enum { 360 TPACPI_LIFE_INIT = 0, 361 TPACPI_LIFE_RUNNING, 362 TPACPI_LIFE_EXITING, 363 } tpacpi_lifecycle; 364 365 static int experimental; 366 static u32 dbg_level; 367 368 static struct workqueue_struct *tpacpi_wq; 369 370 enum led_status_t { 371 TPACPI_LED_OFF = 0, 372 TPACPI_LED_ON, 373 TPACPI_LED_BLINK, 374 }; 375 376 /* tpacpi LED class */ 377 struct tpacpi_led_classdev { 378 struct led_classdev led_classdev; 379 int led; 380 }; 381 382 /* brightness level capabilities */ 383 static unsigned int bright_maxlvl; /* 0 = unknown */ 384 385 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 386 static int dbg_wlswemul; 387 static bool tpacpi_wlsw_emulstate; 388 static int dbg_bluetoothemul; 389 static bool tpacpi_bluetooth_emulstate; 390 static int dbg_wwanemul; 391 static bool tpacpi_wwan_emulstate; 392 static int dbg_uwbemul; 393 static bool tpacpi_uwb_emulstate; 394 #endif 395 396 397 /************************************************************************* 398 * Debugging helpers 399 */ 400 401 #define dbg_printk(a_dbg_level, format, arg...) \ 402 do { \ 403 if (dbg_level & (a_dbg_level)) \ 404 printk(KERN_DEBUG pr_fmt("%s: " format), \ 405 __func__, ##arg); \ 406 } while (0) 407 408 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 409 #define vdbg_printk dbg_printk 410 static const char *str_supported(int is_supported); 411 #else 412 static inline const char *str_supported(int is_supported) { return ""; } 413 #define vdbg_printk(a_dbg_level, format, arg...) \ 414 do { if (0) no_printk(format, ##arg); } while (0) 415 #endif 416 417 static void tpacpi_log_usertask(const char * const what) 418 { 419 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 420 what, task_tgid_vnr(current)); 421 } 422 423 #define tpacpi_disclose_usertask(what, format, arg...) \ 424 do { \ 425 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 426 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 427 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 428 what, task_tgid_vnr(current), ## arg); \ 429 } \ 430 } while (0) 431 432 /* 433 * Quirk handling helpers 434 * 435 * ThinkPad IDs and versions seen in the field so far 436 * are two-characters from the set [0-9A-Z], i.e. base 36. 437 * 438 * We use values well outside that range as specials. 439 */ 440 441 #define TPACPI_MATCH_ANY 0xffffU 442 #define TPACPI_MATCH_UNKNOWN 0U 443 444 /* TPID('1', 'Y') == 0x5931 */ 445 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) 446 447 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 448 { .vendor = PCI_VENDOR_ID_IBM, \ 449 .bios = TPID(__id1, __id2), \ 450 .ec = TPACPI_MATCH_ANY, \ 451 .quirks = (__quirk) } 452 453 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 454 { .vendor = PCI_VENDOR_ID_LENOVO, \ 455 .bios = TPID(__id1, __id2), \ 456 .ec = TPACPI_MATCH_ANY, \ 457 .quirks = (__quirk) } 458 459 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 460 { .vendor = PCI_VENDOR_ID_LENOVO, \ 461 .bios = TPACPI_MATCH_ANY, \ 462 .ec = TPID(__id1, __id2), \ 463 .quirks = (__quirk) } 464 465 struct tpacpi_quirk { 466 unsigned int vendor; 467 u16 bios; 468 u16 ec; 469 unsigned long quirks; 470 }; 471 472 /** 473 * tpacpi_check_quirks() - search BIOS/EC version on a list 474 * @qlist: array of &struct tpacpi_quirk 475 * @qlist_size: number of elements in @qlist 476 * 477 * Iterates over a quirks list until one is found that matches the 478 * ThinkPad's vendor, BIOS and EC model. 479 * 480 * Returns 0 if nothing matches, otherwise returns the quirks field of 481 * the matching &struct tpacpi_quirk entry. 482 * 483 * The match criteria is: vendor, ec and bios much match. 484 */ 485 static unsigned long __init tpacpi_check_quirks( 486 const struct tpacpi_quirk *qlist, 487 unsigned int qlist_size) 488 { 489 while (qlist_size) { 490 if ((qlist->vendor == thinkpad_id.vendor || 491 qlist->vendor == TPACPI_MATCH_ANY) && 492 (qlist->bios == thinkpad_id.bios_model || 493 qlist->bios == TPACPI_MATCH_ANY) && 494 (qlist->ec == thinkpad_id.ec_model || 495 qlist->ec == TPACPI_MATCH_ANY)) 496 return qlist->quirks; 497 498 qlist_size--; 499 qlist++; 500 } 501 return 0; 502 } 503 504 static inline bool __pure __init tpacpi_is_lenovo(void) 505 { 506 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 507 } 508 509 static inline bool __pure __init tpacpi_is_ibm(void) 510 { 511 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 512 } 513 514 /**************************************************************************** 515 **************************************************************************** 516 * 517 * ACPI Helpers and device model 518 * 519 **************************************************************************** 520 ****************************************************************************/ 521 522 /************************************************************************* 523 * ACPI basic handles 524 */ 525 526 static acpi_handle root_handle; 527 static acpi_handle ec_handle; 528 529 #define TPACPI_HANDLE(object, parent, paths...) \ 530 static acpi_handle object##_handle; \ 531 static const acpi_handle * const object##_parent __initconst = \ 532 &parent##_handle; \ 533 static char *object##_paths[] __initdata = { paths } 534 535 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 536 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 537 538 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 539 /* T4x, X31, X40 */ 540 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 541 "\\CMS", /* R40, R40e */ 542 ); /* all others */ 543 544 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 545 "^HKEY", /* R30, R31 */ 546 "HKEY", /* all others */ 547 ); /* 570 */ 548 549 /************************************************************************* 550 * ACPI helpers 551 */ 552 553 static int acpi_evalf(acpi_handle handle, 554 int *res, char *method, char *fmt, ...) 555 { 556 char *fmt0 = fmt; 557 struct acpi_object_list params; 558 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 559 struct acpi_buffer result, *resultp; 560 union acpi_object out_obj; 561 acpi_status status; 562 va_list ap; 563 char res_type; 564 int success; 565 int quiet; 566 567 if (!*fmt) { 568 pr_err("acpi_evalf() called with empty format\n"); 569 return 0; 570 } 571 572 if (*fmt == 'q') { 573 quiet = 1; 574 fmt++; 575 } else 576 quiet = 0; 577 578 res_type = *(fmt++); 579 580 params.count = 0; 581 params.pointer = &in_objs[0]; 582 583 va_start(ap, fmt); 584 while (*fmt) { 585 char c = *(fmt++); 586 switch (c) { 587 case 'd': /* int */ 588 in_objs[params.count].integer.value = va_arg(ap, int); 589 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 590 break; 591 /* add more types as needed */ 592 default: 593 pr_err("acpi_evalf() called " 594 "with invalid format character '%c'\n", c); 595 va_end(ap); 596 return 0; 597 } 598 } 599 va_end(ap); 600 601 if (res_type != 'v') { 602 result.length = sizeof(out_obj); 603 result.pointer = &out_obj; 604 resultp = &result; 605 } else 606 resultp = NULL; 607 608 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 609 610 switch (res_type) { 611 case 'd': /* int */ 612 success = (status == AE_OK && 613 out_obj.type == ACPI_TYPE_INTEGER); 614 if (success && res) 615 *res = out_obj.integer.value; 616 break; 617 case 'v': /* void */ 618 success = status == AE_OK; 619 break; 620 /* add more types as needed */ 621 default: 622 pr_err("acpi_evalf() called " 623 "with invalid format character '%c'\n", res_type); 624 return 0; 625 } 626 627 if (!success && !quiet) 628 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 629 method, fmt0, acpi_format_exception(status)); 630 631 return success; 632 } 633 634 static int acpi_ec_read(int i, u8 *p) 635 { 636 int v; 637 638 if (ecrd_handle) { 639 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 640 return 0; 641 *p = v; 642 } else { 643 if (ec_read(i, p) < 0) 644 return 0; 645 } 646 647 return 1; 648 } 649 650 static int acpi_ec_write(int i, u8 v) 651 { 652 if (ecwr_handle) { 653 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 654 return 0; 655 } else { 656 if (ec_write(i, v) < 0) 657 return 0; 658 } 659 660 return 1; 661 } 662 663 static int issue_thinkpad_cmos_command(int cmos_cmd) 664 { 665 if (!cmos_handle) 666 return -ENXIO; 667 668 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 669 return -EIO; 670 671 return 0; 672 } 673 674 /************************************************************************* 675 * ACPI device model 676 */ 677 678 #define TPACPI_ACPIHANDLE_INIT(object) \ 679 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 680 object##_paths, ARRAY_SIZE(object##_paths)) 681 682 static void __init drv_acpi_handle_init(const char *name, 683 acpi_handle *handle, const acpi_handle parent, 684 char **paths, const int num_paths) 685 { 686 int i; 687 acpi_status status; 688 689 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 690 name); 691 692 for (i = 0; i < num_paths; i++) { 693 status = acpi_get_handle(parent, paths[i], handle); 694 if (ACPI_SUCCESS(status)) { 695 dbg_printk(TPACPI_DBG_INIT, 696 "Found ACPI handle %s for %s\n", 697 paths[i], name); 698 return; 699 } 700 } 701 702 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 703 name); 704 *handle = NULL; 705 } 706 707 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 708 u32 level, void *context, void **return_value) 709 { 710 struct acpi_device *dev; 711 if (!strcmp(context, "video")) { 712 if (acpi_bus_get_device(handle, &dev)) 713 return AE_OK; 714 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 715 return AE_OK; 716 } 717 718 *(acpi_handle *)return_value = handle; 719 720 return AE_CTRL_TERMINATE; 721 } 722 723 static void __init tpacpi_acpi_handle_locate(const char *name, 724 const char *hid, 725 acpi_handle *handle) 726 { 727 acpi_status status; 728 acpi_handle device_found; 729 730 BUG_ON(!name || !handle); 731 vdbg_printk(TPACPI_DBG_INIT, 732 "trying to locate ACPI handle for %s, using HID %s\n", 733 name, hid ? hid : "NULL"); 734 735 memset(&device_found, 0, sizeof(device_found)); 736 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 737 (void *)name, &device_found); 738 739 *handle = NULL; 740 741 if (ACPI_SUCCESS(status)) { 742 *handle = device_found; 743 dbg_printk(TPACPI_DBG_INIT, 744 "Found ACPI handle for %s\n", name); 745 } else { 746 vdbg_printk(TPACPI_DBG_INIT, 747 "Could not locate an ACPI handle for %s: %s\n", 748 name, acpi_format_exception(status)); 749 } 750 } 751 752 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 753 { 754 struct ibm_struct *ibm = data; 755 756 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 757 return; 758 759 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 760 return; 761 762 ibm->acpi->notify(ibm, event); 763 } 764 765 static int __init setup_acpi_notify(struct ibm_struct *ibm) 766 { 767 acpi_status status; 768 int rc; 769 770 BUG_ON(!ibm->acpi); 771 772 if (!*ibm->acpi->handle) 773 return 0; 774 775 vdbg_printk(TPACPI_DBG_INIT, 776 "setting up ACPI notify for %s\n", ibm->name); 777 778 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 779 if (rc < 0) { 780 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 781 return -ENODEV; 782 } 783 784 ibm->acpi->device->driver_data = ibm; 785 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 786 TPACPI_ACPI_EVENT_PREFIX, 787 ibm->name); 788 789 status = acpi_install_notify_handler(*ibm->acpi->handle, 790 ibm->acpi->type, dispatch_acpi_notify, ibm); 791 if (ACPI_FAILURE(status)) { 792 if (status == AE_ALREADY_EXISTS) { 793 pr_notice("another device driver is already " 794 "handling %s events\n", ibm->name); 795 } else { 796 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 797 ibm->name, acpi_format_exception(status)); 798 } 799 return -ENODEV; 800 } 801 ibm->flags.acpi_notify_installed = 1; 802 return 0; 803 } 804 805 static int __init tpacpi_device_add(struct acpi_device *device) 806 { 807 return 0; 808 } 809 810 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 811 { 812 int rc; 813 814 dbg_printk(TPACPI_DBG_INIT, 815 "registering %s as an ACPI driver\n", ibm->name); 816 817 BUG_ON(!ibm->acpi); 818 819 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 820 if (!ibm->acpi->driver) { 821 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 822 return -ENOMEM; 823 } 824 825 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 826 ibm->acpi->driver->ids = ibm->acpi->hid; 827 828 ibm->acpi->driver->ops.add = &tpacpi_device_add; 829 830 rc = acpi_bus_register_driver(ibm->acpi->driver); 831 if (rc < 0) { 832 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 833 ibm->name, rc); 834 kfree(ibm->acpi->driver); 835 ibm->acpi->driver = NULL; 836 } else if (!rc) 837 ibm->flags.acpi_driver_registered = 1; 838 839 return rc; 840 } 841 842 843 /**************************************************************************** 844 **************************************************************************** 845 * 846 * Procfs Helpers 847 * 848 **************************************************************************** 849 ****************************************************************************/ 850 851 static int dispatch_proc_show(struct seq_file *m, void *v) 852 { 853 struct ibm_struct *ibm = m->private; 854 855 if (!ibm || !ibm->read) 856 return -EINVAL; 857 return ibm->read(m); 858 } 859 860 static int dispatch_proc_open(struct inode *inode, struct file *file) 861 { 862 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 863 } 864 865 static ssize_t dispatch_proc_write(struct file *file, 866 const char __user *userbuf, 867 size_t count, loff_t *pos) 868 { 869 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 870 char *kernbuf; 871 int ret; 872 873 if (!ibm || !ibm->write) 874 return -EINVAL; 875 if (count > PAGE_SIZE - 2) 876 return -EINVAL; 877 878 kernbuf = kmalloc(count + 2, GFP_KERNEL); 879 if (!kernbuf) 880 return -ENOMEM; 881 882 if (copy_from_user(kernbuf, userbuf, count)) { 883 kfree(kernbuf); 884 return -EFAULT; 885 } 886 887 kernbuf[count] = 0; 888 strcat(kernbuf, ","); 889 ret = ibm->write(kernbuf); 890 if (ret == 0) 891 ret = count; 892 893 kfree(kernbuf); 894 895 return ret; 896 } 897 898 static const struct file_operations dispatch_proc_fops = { 899 .owner = THIS_MODULE, 900 .open = dispatch_proc_open, 901 .read = seq_read, 902 .llseek = seq_lseek, 903 .release = single_release, 904 .write = dispatch_proc_write, 905 }; 906 907 static char *next_cmd(char **cmds) 908 { 909 char *start = *cmds; 910 char *end; 911 912 while ((end = strchr(start, ',')) && end == start) 913 start = end + 1; 914 915 if (!end) 916 return NULL; 917 918 *end = 0; 919 *cmds = end + 1; 920 return start; 921 } 922 923 924 /**************************************************************************** 925 **************************************************************************** 926 * 927 * Device model: input, hwmon and platform 928 * 929 **************************************************************************** 930 ****************************************************************************/ 931 932 static struct platform_device *tpacpi_pdev; 933 static struct platform_device *tpacpi_sensors_pdev; 934 static struct device *tpacpi_hwmon; 935 static struct input_dev *tpacpi_inputdev; 936 static struct mutex tpacpi_inputdev_send_mutex; 937 static LIST_HEAD(tpacpi_all_drivers); 938 939 #ifdef CONFIG_PM_SLEEP 940 static int tpacpi_suspend_handler(struct device *dev) 941 { 942 struct ibm_struct *ibm, *itmp; 943 944 list_for_each_entry_safe(ibm, itmp, 945 &tpacpi_all_drivers, 946 all_drivers) { 947 if (ibm->suspend) 948 (ibm->suspend)(); 949 } 950 951 return 0; 952 } 953 954 static int tpacpi_resume_handler(struct device *dev) 955 { 956 struct ibm_struct *ibm, *itmp; 957 958 list_for_each_entry_safe(ibm, itmp, 959 &tpacpi_all_drivers, 960 all_drivers) { 961 if (ibm->resume) 962 (ibm->resume)(); 963 } 964 965 return 0; 966 } 967 #endif 968 969 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 970 tpacpi_suspend_handler, tpacpi_resume_handler); 971 972 static void tpacpi_shutdown_handler(struct platform_device *pdev) 973 { 974 struct ibm_struct *ibm, *itmp; 975 976 list_for_each_entry_safe(ibm, itmp, 977 &tpacpi_all_drivers, 978 all_drivers) { 979 if (ibm->shutdown) 980 (ibm->shutdown)(); 981 } 982 } 983 984 static struct platform_driver tpacpi_pdriver = { 985 .driver = { 986 .name = TPACPI_DRVR_NAME, 987 .pm = &tpacpi_pm, 988 }, 989 .shutdown = tpacpi_shutdown_handler, 990 }; 991 992 static struct platform_driver tpacpi_hwmon_pdriver = { 993 .driver = { 994 .name = TPACPI_HWMON_DRVR_NAME, 995 }, 996 }; 997 998 /************************************************************************* 999 * sysfs support helpers 1000 */ 1001 1002 struct attribute_set { 1003 unsigned int members, max_members; 1004 struct attribute_group group; 1005 }; 1006 1007 struct attribute_set_obj { 1008 struct attribute_set s; 1009 struct attribute *a; 1010 } __attribute__((packed)); 1011 1012 static struct attribute_set *create_attr_set(unsigned int max_members, 1013 const char *name) 1014 { 1015 struct attribute_set_obj *sobj; 1016 1017 if (max_members == 0) 1018 return NULL; 1019 1020 /* Allocates space for implicit NULL at the end too */ 1021 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1022 max_members * sizeof(struct attribute *), 1023 GFP_KERNEL); 1024 if (!sobj) 1025 return NULL; 1026 sobj->s.max_members = max_members; 1027 sobj->s.group.attrs = &sobj->a; 1028 sobj->s.group.name = name; 1029 1030 return &sobj->s; 1031 } 1032 1033 #define destroy_attr_set(_set) \ 1034 kfree(_set); 1035 1036 /* not multi-threaded safe, use it in a single thread per set */ 1037 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1038 { 1039 if (!s || !attr) 1040 return -EINVAL; 1041 1042 if (s->members >= s->max_members) 1043 return -ENOMEM; 1044 1045 s->group.attrs[s->members] = attr; 1046 s->members++; 1047 1048 return 0; 1049 } 1050 1051 static int add_many_to_attr_set(struct attribute_set *s, 1052 struct attribute **attr, 1053 unsigned int count) 1054 { 1055 int i, res; 1056 1057 for (i = 0; i < count; i++) { 1058 res = add_to_attr_set(s, attr[i]); 1059 if (res) 1060 return res; 1061 } 1062 1063 return 0; 1064 } 1065 1066 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1067 { 1068 sysfs_remove_group(kobj, &s->group); 1069 destroy_attr_set(s); 1070 } 1071 1072 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1073 sysfs_create_group(_kobj, &_attr_set->group) 1074 1075 static int parse_strtoul(const char *buf, 1076 unsigned long max, unsigned long *value) 1077 { 1078 char *endp; 1079 1080 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1081 endp = skip_spaces(endp); 1082 if (*endp || *value > max) 1083 return -EINVAL; 1084 1085 return 0; 1086 } 1087 1088 static void tpacpi_disable_brightness_delay(void) 1089 { 1090 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1091 pr_notice("ACPI backlight control delay disabled\n"); 1092 } 1093 1094 static void printk_deprecated_attribute(const char * const what, 1095 const char * const details) 1096 { 1097 tpacpi_log_usertask("deprecated sysfs attribute"); 1098 pr_warn("WARNING: sysfs attribute %s is deprecated and " 1099 "will be removed. %s\n", 1100 what, details); 1101 } 1102 1103 /************************************************************************* 1104 * rfkill and radio control support helpers 1105 */ 1106 1107 /* 1108 * ThinkPad-ACPI firmware handling model: 1109 * 1110 * WLSW (master wireless switch) is event-driven, and is common to all 1111 * firmware-controlled radios. It cannot be controlled, just monitored, 1112 * as expected. It overrides all radio state in firmware 1113 * 1114 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1115 * (TODO: verify how WLSW interacts with the returned radio state). 1116 * 1117 * The only time there are shadow radio state changes, is when 1118 * masked-off hotkeys are used. 1119 */ 1120 1121 /* 1122 * Internal driver API for radio state: 1123 * 1124 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1125 * bool: true means radio blocked (off) 1126 */ 1127 enum tpacpi_rfkill_state { 1128 TPACPI_RFK_RADIO_OFF = 0, 1129 TPACPI_RFK_RADIO_ON 1130 }; 1131 1132 /* rfkill switches */ 1133 enum tpacpi_rfk_id { 1134 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1135 TPACPI_RFK_WWAN_SW_ID, 1136 TPACPI_RFK_UWB_SW_ID, 1137 TPACPI_RFK_SW_MAX 1138 }; 1139 1140 static const char *tpacpi_rfkill_names[] = { 1141 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1142 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1143 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1144 [TPACPI_RFK_SW_MAX] = NULL 1145 }; 1146 1147 /* ThinkPad-ACPI rfkill subdriver */ 1148 struct tpacpi_rfk { 1149 struct rfkill *rfkill; 1150 enum tpacpi_rfk_id id; 1151 const struct tpacpi_rfk_ops *ops; 1152 }; 1153 1154 struct tpacpi_rfk_ops { 1155 /* firmware interface */ 1156 int (*get_status)(void); 1157 int (*set_status)(const enum tpacpi_rfkill_state); 1158 }; 1159 1160 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1161 1162 /* Query FW and update rfkill sw state for a given rfkill switch */ 1163 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1164 { 1165 int status; 1166 1167 if (!tp_rfk) 1168 return -ENODEV; 1169 1170 status = (tp_rfk->ops->get_status)(); 1171 if (status < 0) 1172 return status; 1173 1174 rfkill_set_sw_state(tp_rfk->rfkill, 1175 (status == TPACPI_RFK_RADIO_OFF)); 1176 1177 return status; 1178 } 1179 1180 /* Query FW and update rfkill sw state for all rfkill switches */ 1181 static void tpacpi_rfk_update_swstate_all(void) 1182 { 1183 unsigned int i; 1184 1185 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1186 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1187 } 1188 1189 /* 1190 * Sync the HW-blocking state of all rfkill switches, 1191 * do notice it causes the rfkill core to schedule uevents 1192 */ 1193 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1194 { 1195 unsigned int i; 1196 struct tpacpi_rfk *tp_rfk; 1197 1198 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1199 tp_rfk = tpacpi_rfkill_switches[i]; 1200 if (tp_rfk) { 1201 if (rfkill_set_hw_state(tp_rfk->rfkill, 1202 blocked)) { 1203 /* ignore -- we track sw block */ 1204 } 1205 } 1206 } 1207 } 1208 1209 /* Call to get the WLSW state from the firmware */ 1210 static int hotkey_get_wlsw(void); 1211 1212 /* Call to query WLSW state and update all rfkill switches */ 1213 static bool tpacpi_rfk_check_hwblock_state(void) 1214 { 1215 int res = hotkey_get_wlsw(); 1216 int hw_blocked; 1217 1218 /* When unknown or unsupported, we have to assume it is unblocked */ 1219 if (res < 0) 1220 return false; 1221 1222 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1223 tpacpi_rfk_update_hwblock_state(hw_blocked); 1224 1225 return hw_blocked; 1226 } 1227 1228 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1229 { 1230 struct tpacpi_rfk *tp_rfk = data; 1231 int res; 1232 1233 dbg_printk(TPACPI_DBG_RFKILL, 1234 "request to change radio state to %s\n", 1235 blocked ? "blocked" : "unblocked"); 1236 1237 /* try to set radio state */ 1238 res = (tp_rfk->ops->set_status)(blocked ? 1239 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1240 1241 /* and update the rfkill core with whatever the FW really did */ 1242 tpacpi_rfk_update_swstate(tp_rfk); 1243 1244 return (res < 0) ? res : 0; 1245 } 1246 1247 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1248 .set_block = tpacpi_rfk_hook_set_block, 1249 }; 1250 1251 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1252 const struct tpacpi_rfk_ops *tp_rfkops, 1253 const enum rfkill_type rfktype, 1254 const char *name, 1255 const bool set_default) 1256 { 1257 struct tpacpi_rfk *atp_rfk; 1258 int res; 1259 bool sw_state = false; 1260 bool hw_state; 1261 int sw_status; 1262 1263 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1264 1265 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1266 if (atp_rfk) 1267 atp_rfk->rfkill = rfkill_alloc(name, 1268 &tpacpi_pdev->dev, 1269 rfktype, 1270 &tpacpi_rfk_rfkill_ops, 1271 atp_rfk); 1272 if (!atp_rfk || !atp_rfk->rfkill) { 1273 pr_err("failed to allocate memory for rfkill class\n"); 1274 kfree(atp_rfk); 1275 return -ENOMEM; 1276 } 1277 1278 atp_rfk->id = id; 1279 atp_rfk->ops = tp_rfkops; 1280 1281 sw_status = (tp_rfkops->get_status)(); 1282 if (sw_status < 0) { 1283 pr_err("failed to read initial state for %s, error %d\n", 1284 name, sw_status); 1285 } else { 1286 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1287 if (set_default) { 1288 /* try to keep the initial state, since we ask the 1289 * firmware to preserve it across S5 in NVRAM */ 1290 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1291 } 1292 } 1293 hw_state = tpacpi_rfk_check_hwblock_state(); 1294 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1295 1296 res = rfkill_register(atp_rfk->rfkill); 1297 if (res < 0) { 1298 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1299 rfkill_destroy(atp_rfk->rfkill); 1300 kfree(atp_rfk); 1301 return res; 1302 } 1303 1304 tpacpi_rfkill_switches[id] = atp_rfk; 1305 1306 pr_info("rfkill switch %s: radio is %sblocked\n", 1307 name, (sw_state || hw_state) ? "" : "un"); 1308 return 0; 1309 } 1310 1311 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1312 { 1313 struct tpacpi_rfk *tp_rfk; 1314 1315 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1316 1317 tp_rfk = tpacpi_rfkill_switches[id]; 1318 if (tp_rfk) { 1319 rfkill_unregister(tp_rfk->rfkill); 1320 rfkill_destroy(tp_rfk->rfkill); 1321 tpacpi_rfkill_switches[id] = NULL; 1322 kfree(tp_rfk); 1323 } 1324 } 1325 1326 static void printk_deprecated_rfkill_attribute(const char * const what) 1327 { 1328 printk_deprecated_attribute(what, 1329 "Please switch to generic rfkill before year 2010"); 1330 } 1331 1332 /* sysfs <radio> enable ------------------------------------------------ */ 1333 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1334 struct device_attribute *attr, 1335 char *buf) 1336 { 1337 int status; 1338 1339 printk_deprecated_rfkill_attribute(attr->attr.name); 1340 1341 /* This is in the ABI... */ 1342 if (tpacpi_rfk_check_hwblock_state()) { 1343 status = TPACPI_RFK_RADIO_OFF; 1344 } else { 1345 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1346 if (status < 0) 1347 return status; 1348 } 1349 1350 return snprintf(buf, PAGE_SIZE, "%d\n", 1351 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1352 } 1353 1354 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1355 struct device_attribute *attr, 1356 const char *buf, size_t count) 1357 { 1358 unsigned long t; 1359 int res; 1360 1361 printk_deprecated_rfkill_attribute(attr->attr.name); 1362 1363 if (parse_strtoul(buf, 1, &t)) 1364 return -EINVAL; 1365 1366 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1367 1368 /* This is in the ABI... */ 1369 if (tpacpi_rfk_check_hwblock_state() && !!t) 1370 return -EPERM; 1371 1372 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1373 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1374 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1375 1376 return (res < 0) ? res : count; 1377 } 1378 1379 /* procfs -------------------------------------------------------------- */ 1380 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1381 { 1382 if (id >= TPACPI_RFK_SW_MAX) 1383 seq_printf(m, "status:\t\tnot supported\n"); 1384 else { 1385 int status; 1386 1387 /* This is in the ABI... */ 1388 if (tpacpi_rfk_check_hwblock_state()) { 1389 status = TPACPI_RFK_RADIO_OFF; 1390 } else { 1391 status = tpacpi_rfk_update_swstate( 1392 tpacpi_rfkill_switches[id]); 1393 if (status < 0) 1394 return status; 1395 } 1396 1397 seq_printf(m, "status:\t\t%s\n", 1398 (status == TPACPI_RFK_RADIO_ON) ? 1399 "enabled" : "disabled"); 1400 seq_printf(m, "commands:\tenable, disable\n"); 1401 } 1402 1403 return 0; 1404 } 1405 1406 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1407 { 1408 char *cmd; 1409 int status = -1; 1410 int res = 0; 1411 1412 if (id >= TPACPI_RFK_SW_MAX) 1413 return -ENODEV; 1414 1415 while ((cmd = next_cmd(&buf))) { 1416 if (strlencmp(cmd, "enable") == 0) 1417 status = TPACPI_RFK_RADIO_ON; 1418 else if (strlencmp(cmd, "disable") == 0) 1419 status = TPACPI_RFK_RADIO_OFF; 1420 else 1421 return -EINVAL; 1422 } 1423 1424 if (status != -1) { 1425 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1426 (status == TPACPI_RFK_RADIO_ON) ? 1427 "enable" : "disable", 1428 tpacpi_rfkill_names[id]); 1429 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1430 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1431 } 1432 1433 return res; 1434 } 1435 1436 /************************************************************************* 1437 * thinkpad-acpi driver attributes 1438 */ 1439 1440 /* interface_version --------------------------------------------------- */ 1441 static ssize_t tpacpi_driver_interface_version_show( 1442 struct device_driver *drv, 1443 char *buf) 1444 { 1445 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1446 } 1447 1448 static DRIVER_ATTR(interface_version, S_IRUGO, 1449 tpacpi_driver_interface_version_show, NULL); 1450 1451 /* debug_level --------------------------------------------------------- */ 1452 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, 1453 char *buf) 1454 { 1455 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1456 } 1457 1458 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, 1459 const char *buf, size_t count) 1460 { 1461 unsigned long t; 1462 1463 if (parse_strtoul(buf, 0xffff, &t)) 1464 return -EINVAL; 1465 1466 dbg_level = t; 1467 1468 return count; 1469 } 1470 1471 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, 1472 tpacpi_driver_debug_show, tpacpi_driver_debug_store); 1473 1474 /* version ------------------------------------------------------------- */ 1475 static ssize_t tpacpi_driver_version_show(struct device_driver *drv, 1476 char *buf) 1477 { 1478 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1479 TPACPI_DESC, TPACPI_VERSION); 1480 } 1481 1482 static DRIVER_ATTR(version, S_IRUGO, 1483 tpacpi_driver_version_show, NULL); 1484 1485 /* --------------------------------------------------------------------- */ 1486 1487 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1488 1489 /* wlsw_emulstate ------------------------------------------------------ */ 1490 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, 1491 char *buf) 1492 { 1493 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1494 } 1495 1496 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, 1497 const char *buf, size_t count) 1498 { 1499 unsigned long t; 1500 1501 if (parse_strtoul(buf, 1, &t)) 1502 return -EINVAL; 1503 1504 if (tpacpi_wlsw_emulstate != !!t) { 1505 tpacpi_wlsw_emulstate = !!t; 1506 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1507 } 1508 1509 return count; 1510 } 1511 1512 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO, 1513 tpacpi_driver_wlsw_emulstate_show, 1514 tpacpi_driver_wlsw_emulstate_store); 1515 1516 /* bluetooth_emulstate ------------------------------------------------- */ 1517 static ssize_t tpacpi_driver_bluetooth_emulstate_show( 1518 struct device_driver *drv, 1519 char *buf) 1520 { 1521 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1522 } 1523 1524 static ssize_t tpacpi_driver_bluetooth_emulstate_store( 1525 struct device_driver *drv, 1526 const char *buf, size_t count) 1527 { 1528 unsigned long t; 1529 1530 if (parse_strtoul(buf, 1, &t)) 1531 return -EINVAL; 1532 1533 tpacpi_bluetooth_emulstate = !!t; 1534 1535 return count; 1536 } 1537 1538 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO, 1539 tpacpi_driver_bluetooth_emulstate_show, 1540 tpacpi_driver_bluetooth_emulstate_store); 1541 1542 /* wwan_emulstate ------------------------------------------------- */ 1543 static ssize_t tpacpi_driver_wwan_emulstate_show( 1544 struct device_driver *drv, 1545 char *buf) 1546 { 1547 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1548 } 1549 1550 static ssize_t tpacpi_driver_wwan_emulstate_store( 1551 struct device_driver *drv, 1552 const char *buf, size_t count) 1553 { 1554 unsigned long t; 1555 1556 if (parse_strtoul(buf, 1, &t)) 1557 return -EINVAL; 1558 1559 tpacpi_wwan_emulstate = !!t; 1560 1561 return count; 1562 } 1563 1564 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO, 1565 tpacpi_driver_wwan_emulstate_show, 1566 tpacpi_driver_wwan_emulstate_store); 1567 1568 /* uwb_emulstate ------------------------------------------------- */ 1569 static ssize_t tpacpi_driver_uwb_emulstate_show( 1570 struct device_driver *drv, 1571 char *buf) 1572 { 1573 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1574 } 1575 1576 static ssize_t tpacpi_driver_uwb_emulstate_store( 1577 struct device_driver *drv, 1578 const char *buf, size_t count) 1579 { 1580 unsigned long t; 1581 1582 if (parse_strtoul(buf, 1, &t)) 1583 return -EINVAL; 1584 1585 tpacpi_uwb_emulstate = !!t; 1586 1587 return count; 1588 } 1589 1590 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO, 1591 tpacpi_driver_uwb_emulstate_show, 1592 tpacpi_driver_uwb_emulstate_store); 1593 #endif 1594 1595 /* --------------------------------------------------------------------- */ 1596 1597 static struct driver_attribute *tpacpi_driver_attributes[] = { 1598 &driver_attr_debug_level, &driver_attr_version, 1599 &driver_attr_interface_version, 1600 }; 1601 1602 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1603 { 1604 int i, res; 1605 1606 i = 0; 1607 res = 0; 1608 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1609 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1610 i++; 1611 } 1612 1613 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1614 if (!res && dbg_wlswemul) 1615 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1616 if (!res && dbg_bluetoothemul) 1617 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1618 if (!res && dbg_wwanemul) 1619 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1620 if (!res && dbg_uwbemul) 1621 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1622 #endif 1623 1624 return res; 1625 } 1626 1627 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1628 { 1629 int i; 1630 1631 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1632 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1633 1634 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1635 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1636 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1637 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1638 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1639 #endif 1640 } 1641 1642 /************************************************************************* 1643 * Firmware Data 1644 */ 1645 1646 /* 1647 * Table of recommended minimum BIOS versions 1648 * 1649 * Reasons for listing: 1650 * 1. Stable BIOS, listed because the unknown amount of 1651 * bugs and bad ACPI behaviour on older versions 1652 * 1653 * 2. BIOS or EC fw with known bugs that trigger on Linux 1654 * 1655 * 3. BIOS with known reduced functionality in older versions 1656 * 1657 * We recommend the latest BIOS and EC version. 1658 * We only support the latest BIOS and EC fw version as a rule. 1659 * 1660 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1661 * Information from users in ThinkWiki 1662 * 1663 * WARNING: we use this table also to detect that the machine is 1664 * a ThinkPad in some cases, so don't remove entries lightly. 1665 */ 1666 1667 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1668 { .vendor = (__v), \ 1669 .bios = TPID(__id1, __id2), \ 1670 .ec = TPACPI_MATCH_ANY, \ 1671 .quirks = TPACPI_MATCH_ANY << 16 \ 1672 | (__bv1) << 8 | (__bv2) } 1673 1674 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1675 __eid, __ev1, __ev2) \ 1676 { .vendor = (__v), \ 1677 .bios = TPID(__bid1, __bid2), \ 1678 .ec = __eid, \ 1679 .quirks = (__ev1) << 24 | (__ev2) << 16 \ 1680 | (__bv1) << 8 | (__bv2) } 1681 1682 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1683 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1684 1685 /* Outdated IBM BIOSes often lack the EC id string */ 1686 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1687 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1688 __bv1, __bv2, TPID(__id1, __id2), \ 1689 __ev1, __ev2), \ 1690 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1691 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1692 __ev1, __ev2) 1693 1694 /* Outdated IBM BIOSes often lack the EC id string */ 1695 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1696 __eid1, __eid2, __ev1, __ev2) \ 1697 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1698 __bv1, __bv2, TPID(__eid1, __eid2), \ 1699 __ev1, __ev2), \ 1700 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1701 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1702 __ev1, __ev2) 1703 1704 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1705 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1706 1707 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1708 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1709 __bv1, __bv2, TPID(__id1, __id2), \ 1710 __ev1, __ev2) 1711 1712 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1713 __eid1, __eid2, __ev1, __ev2) \ 1714 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1715 __bv1, __bv2, TPID(__eid1, __eid2), \ 1716 __ev1, __ev2) 1717 1718 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1719 /* Numeric models ------------------ */ 1720 /* FW MODEL BIOS VERS */ 1721 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1722 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1723 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1724 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1725 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1726 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1727 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1728 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1729 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1730 1731 /* A-series ------------------------- */ 1732 /* FW MODEL BIOS VERS EC VERS */ 1733 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1734 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1735 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1736 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1737 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1738 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1739 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1740 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1741 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1742 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1743 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1744 1745 /* G-series ------------------------- */ 1746 /* FW MODEL BIOS VERS */ 1747 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1748 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1749 1750 /* R-series, T-series --------------- */ 1751 /* FW MODEL BIOS VERS EC VERS */ 1752 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1753 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1754 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1755 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1756 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1757 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1758 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1759 T40/p, T41/p, T42/p (1) */ 1760 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1761 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1762 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1763 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1764 1765 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1766 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1767 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1768 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1769 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1770 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1771 1772 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1773 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1774 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1775 1776 /* BIOS FW BIOS VERS EC FW EC VERS */ 1777 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1778 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1779 1780 /* X-series ------------------------- */ 1781 /* FW MODEL BIOS VERS EC VERS */ 1782 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1783 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1784 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1785 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1786 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1787 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1788 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1789 1790 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1791 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1792 1793 /* (0) - older versions lack DMI EC fw string and functionality */ 1794 /* (1) - older versions known to lack functionality */ 1795 }; 1796 1797 #undef TPV_QL1 1798 #undef TPV_QL0 1799 #undef TPV_QI2 1800 #undef TPV_QI1 1801 #undef TPV_QI0 1802 #undef TPV_Q_X 1803 #undef TPV_Q 1804 1805 static void __init tpacpi_check_outdated_fw(void) 1806 { 1807 unsigned long fwvers; 1808 u16 ec_version, bios_version; 1809 1810 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1811 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1812 1813 if (!fwvers) 1814 return; 1815 1816 bios_version = fwvers & 0xffffU; 1817 ec_version = (fwvers >> 16) & 0xffffU; 1818 1819 /* note that unknown versions are set to 0x0000 and we use that */ 1820 if ((bios_version > thinkpad_id.bios_release) || 1821 (ec_version > thinkpad_id.ec_release && 1822 ec_version != TPACPI_MATCH_ANY)) { 1823 /* 1824 * The changelogs would let us track down the exact 1825 * reason, but it is just too much of a pain to track 1826 * it. We only list BIOSes that are either really 1827 * broken, or really stable to begin with, so it is 1828 * best if the user upgrades the firmware anyway. 1829 */ 1830 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1831 pr_warn("WARNING: This firmware may be missing critical bug " 1832 "fixes and/or important features\n"); 1833 } 1834 } 1835 1836 static bool __init tpacpi_is_fw_known(void) 1837 { 1838 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1839 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1840 } 1841 1842 /**************************************************************************** 1843 **************************************************************************** 1844 * 1845 * Subdrivers 1846 * 1847 **************************************************************************** 1848 ****************************************************************************/ 1849 1850 /************************************************************************* 1851 * thinkpad-acpi metadata subdriver 1852 */ 1853 1854 static int thinkpad_acpi_driver_read(struct seq_file *m) 1855 { 1856 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1857 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1858 return 0; 1859 } 1860 1861 static struct ibm_struct thinkpad_acpi_driver_data = { 1862 .name = "driver", 1863 .read = thinkpad_acpi_driver_read, 1864 }; 1865 1866 /************************************************************************* 1867 * Hotkey subdriver 1868 */ 1869 1870 /* 1871 * ThinkPad firmware event model 1872 * 1873 * The ThinkPad firmware has two main event interfaces: normal ACPI 1874 * notifications (which follow the ACPI standard), and a private event 1875 * interface. 1876 * 1877 * The private event interface also issues events for the hotkeys. As 1878 * the driver gained features, the event handling code ended up being 1879 * built around the hotkey subdriver. This will need to be refactored 1880 * to a more formal event API eventually. 1881 * 1882 * Some "hotkeys" are actually supposed to be used as event reports, 1883 * such as "brightness has changed", "volume has changed", depending on 1884 * the ThinkPad model and how the firmware is operating. 1885 * 1886 * Unlike other classes, hotkey-class events have mask/unmask control on 1887 * non-ancient firmware. However, how it behaves changes a lot with the 1888 * firmware model and version. 1889 */ 1890 1891 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1892 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1893 TP_ACPI_HOTKEYSCAN_FNF2, 1894 TP_ACPI_HOTKEYSCAN_FNF3, 1895 TP_ACPI_HOTKEYSCAN_FNF4, 1896 TP_ACPI_HOTKEYSCAN_FNF5, 1897 TP_ACPI_HOTKEYSCAN_FNF6, 1898 TP_ACPI_HOTKEYSCAN_FNF7, 1899 TP_ACPI_HOTKEYSCAN_FNF8, 1900 TP_ACPI_HOTKEYSCAN_FNF9, 1901 TP_ACPI_HOTKEYSCAN_FNF10, 1902 TP_ACPI_HOTKEYSCAN_FNF11, 1903 TP_ACPI_HOTKEYSCAN_FNF12, 1904 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1905 TP_ACPI_HOTKEYSCAN_FNINSERT, 1906 TP_ACPI_HOTKEYSCAN_FNDELETE, 1907 TP_ACPI_HOTKEYSCAN_FNHOME, 1908 TP_ACPI_HOTKEYSCAN_FNEND, 1909 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1910 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1911 TP_ACPI_HOTKEYSCAN_FNSPACE, 1912 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1913 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1914 TP_ACPI_HOTKEYSCAN_MUTE, 1915 TP_ACPI_HOTKEYSCAN_THINKPAD, 1916 TP_ACPI_HOTKEYSCAN_UNK1, 1917 TP_ACPI_HOTKEYSCAN_UNK2, 1918 TP_ACPI_HOTKEYSCAN_UNK3, 1919 TP_ACPI_HOTKEYSCAN_UNK4, 1920 TP_ACPI_HOTKEYSCAN_UNK5, 1921 TP_ACPI_HOTKEYSCAN_UNK6, 1922 TP_ACPI_HOTKEYSCAN_UNK7, 1923 TP_ACPI_HOTKEYSCAN_UNK8, 1924 1925 /* Adaptive keyboard keycodes */ 1926 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1927 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1928 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1929 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1930 TP_ACPI_HOTKEYSCAN_CLOUD, 1931 TP_ACPI_HOTKEYSCAN_UNK9, 1932 TP_ACPI_HOTKEYSCAN_VOICE, 1933 TP_ACPI_HOTKEYSCAN_UNK10, 1934 TP_ACPI_HOTKEYSCAN_GESTURES, 1935 TP_ACPI_HOTKEYSCAN_UNK11, 1936 TP_ACPI_HOTKEYSCAN_UNK12, 1937 TP_ACPI_HOTKEYSCAN_UNK13, 1938 TP_ACPI_HOTKEYSCAN_CONFIG, 1939 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1940 TP_ACPI_HOTKEYSCAN_RELOAD, 1941 TP_ACPI_HOTKEYSCAN_BACK, 1942 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1943 TP_ACPI_HOTKEYSCAN_MIC_UP, 1944 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1945 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1946 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1947 1948 /* Lenovo extended keymap, starting at 0x1300 */ 1949 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1950 /* first new observed key (star, favorites) is 0x1311 */ 1951 TP_ACPI_HOTKEYSCAN_STAR = 69, 1952 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1953 TP_ACPI_HOTKEYSCAN_UNK25, 1954 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1955 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1956 1957 /* Hotkey keymap size */ 1958 TPACPI_HOTKEY_MAP_LEN 1959 }; 1960 1961 enum { /* Keys/events available through NVRAM polling */ 1962 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1963 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1964 }; 1965 1966 enum { /* Positions of some of the keys in hotkey masks */ 1967 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1968 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1969 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1970 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1971 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1972 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1973 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1974 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1975 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1976 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1977 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1978 }; 1979 1980 enum { /* NVRAM to ACPI HKEY group map */ 1981 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1982 TP_ACPI_HKEY_ZOOM_MASK | 1983 TP_ACPI_HKEY_DISPSWTCH_MASK | 1984 TP_ACPI_HKEY_HIBERNATE_MASK, 1985 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1986 TP_ACPI_HKEY_BRGHTDWN_MASK, 1987 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1988 TP_ACPI_HKEY_VOLDWN_MASK | 1989 TP_ACPI_HKEY_MUTE_MASK, 1990 }; 1991 1992 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1993 struct tp_nvram_state { 1994 u16 thinkpad_toggle:1; 1995 u16 zoom_toggle:1; 1996 u16 display_toggle:1; 1997 u16 thinklight_toggle:1; 1998 u16 hibernate_toggle:1; 1999 u16 displayexp_toggle:1; 2000 u16 display_state:1; 2001 u16 brightness_toggle:1; 2002 u16 volume_toggle:1; 2003 u16 mute:1; 2004 2005 u8 brightness_level; 2006 u8 volume_level; 2007 }; 2008 2009 /* kthread for the hotkey poller */ 2010 static struct task_struct *tpacpi_hotkey_task; 2011 2012 /* 2013 * Acquire mutex to write poller control variables as an 2014 * atomic block. 2015 * 2016 * Increment hotkey_config_change when changing them if you 2017 * want the kthread to forget old state. 2018 * 2019 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 2020 */ 2021 static struct mutex hotkey_thread_data_mutex; 2022 static unsigned int hotkey_config_change; 2023 2024 /* 2025 * hotkey poller control variables 2026 * 2027 * Must be atomic or readers will also need to acquire mutex 2028 * 2029 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 2030 * should be used only when the changes need to be taken as 2031 * a block, OR when one needs to force the kthread to forget 2032 * old state. 2033 */ 2034 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2035 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2036 2037 #define HOTKEY_CONFIG_CRITICAL_START \ 2038 do { \ 2039 mutex_lock(&hotkey_thread_data_mutex); \ 2040 hotkey_config_change++; \ 2041 } while (0); 2042 #define HOTKEY_CONFIG_CRITICAL_END \ 2043 mutex_unlock(&hotkey_thread_data_mutex); 2044 2045 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2046 2047 #define hotkey_source_mask 0U 2048 #define HOTKEY_CONFIG_CRITICAL_START 2049 #define HOTKEY_CONFIG_CRITICAL_END 2050 2051 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2052 2053 static struct mutex hotkey_mutex; 2054 2055 static enum { /* Reasons for waking up */ 2056 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2057 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2058 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2059 } hotkey_wakeup_reason; 2060 2061 static int hotkey_autosleep_ack; 2062 2063 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2064 static u32 hotkey_all_mask; /* all events supported in fw */ 2065 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2066 static u32 hotkey_reserved_mask; /* events better left disabled */ 2067 static u32 hotkey_driver_mask; /* events needed by the driver */ 2068 static u32 hotkey_user_mask; /* events visible to userspace */ 2069 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2070 2071 static u16 *hotkey_keycode_map; 2072 2073 static struct attribute_set *hotkey_dev_attributes; 2074 2075 static void tpacpi_driver_event(const unsigned int hkey_event); 2076 static void hotkey_driver_event(const unsigned int scancode); 2077 static void hotkey_poll_setup(const bool may_warn); 2078 2079 /* HKEY.MHKG() return bits */ 2080 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2081 /* ThinkPad X1 Yoga (2016) */ 2082 #define TP_EC_CMMD_TABLET_MODE 0x6 2083 2084 static int hotkey_get_wlsw(void) 2085 { 2086 int status; 2087 2088 if (!tp_features.hotkey_wlsw) 2089 return -ENODEV; 2090 2091 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2092 if (dbg_wlswemul) 2093 return (tpacpi_wlsw_emulstate) ? 2094 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2095 #endif 2096 2097 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2098 return -EIO; 2099 2100 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2101 } 2102 2103 static int hotkey_get_tablet_mode(int *status) 2104 { 2105 int s; 2106 2107 switch (tp_features.hotkey_tablet) { 2108 case TP_HOTKEY_TABLET_USES_MHKG: 2109 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2110 return -EIO; 2111 2112 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2113 break; 2114 case TP_HOTKEY_TABLET_USES_CMMD: 2115 if (!acpi_evalf(ec_handle, &s, "CMMD", "d")) 2116 return -EIO; 2117 2118 *status = (s == TP_EC_CMMD_TABLET_MODE); 2119 break; 2120 default: 2121 break; 2122 } 2123 2124 return 0; 2125 } 2126 2127 /* 2128 * Reads current event mask from firmware, and updates 2129 * hotkey_acpi_mask accordingly. Also resets any bits 2130 * from hotkey_user_mask that are unavailable to be 2131 * delivered (shadow requirement of the userspace ABI). 2132 * 2133 * Call with hotkey_mutex held 2134 */ 2135 static int hotkey_mask_get(void) 2136 { 2137 if (tp_features.hotkey_mask) { 2138 u32 m = 0; 2139 2140 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2141 return -EIO; 2142 2143 hotkey_acpi_mask = m; 2144 } else { 2145 /* no mask support doesn't mean no event support... */ 2146 hotkey_acpi_mask = hotkey_all_mask; 2147 } 2148 2149 /* sync userspace-visible mask */ 2150 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2151 2152 return 0; 2153 } 2154 2155 static void hotkey_mask_warn_incomplete_mask(void) 2156 { 2157 /* log only what the user can fix... */ 2158 const u32 wantedmask = hotkey_driver_mask & 2159 ~(hotkey_acpi_mask | hotkey_source_mask) & 2160 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2161 2162 if (wantedmask) 2163 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2164 } 2165 2166 /* 2167 * Set the firmware mask when supported 2168 * 2169 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2170 * 2171 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2172 * 2173 * Call with hotkey_mutex held 2174 */ 2175 static int hotkey_mask_set(u32 mask) 2176 { 2177 int i; 2178 int rc = 0; 2179 2180 const u32 fwmask = mask & ~hotkey_source_mask; 2181 2182 if (tp_features.hotkey_mask) { 2183 for (i = 0; i < 32; i++) { 2184 if (!acpi_evalf(hkey_handle, 2185 NULL, "MHKM", "vdd", i + 1, 2186 !!(mask & (1 << i)))) { 2187 rc = -EIO; 2188 break; 2189 } 2190 } 2191 } 2192 2193 /* 2194 * We *must* make an inconditional call to hotkey_mask_get to 2195 * refresh hotkey_acpi_mask and update hotkey_user_mask 2196 * 2197 * Take the opportunity to also log when we cannot _enable_ 2198 * a given event. 2199 */ 2200 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2201 pr_notice("asked for hotkey mask 0x%08x, but " 2202 "firmware forced it to 0x%08x\n", 2203 fwmask, hotkey_acpi_mask); 2204 } 2205 2206 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2207 hotkey_mask_warn_incomplete_mask(); 2208 2209 return rc; 2210 } 2211 2212 /* 2213 * Sets hotkey_user_mask and tries to set the firmware mask 2214 * 2215 * Call with hotkey_mutex held 2216 */ 2217 static int hotkey_user_mask_set(const u32 mask) 2218 { 2219 int rc; 2220 2221 /* Give people a chance to notice they are doing something that 2222 * is bound to go boom on their users sooner or later */ 2223 if (!tp_warned.hotkey_mask_ff && 2224 (mask == 0xffff || mask == 0xffffff || 2225 mask == 0xffffffff)) { 2226 tp_warned.hotkey_mask_ff = 1; 2227 pr_notice("setting the hotkey mask to 0x%08x is likely " 2228 "not the best way to go about it\n", mask); 2229 pr_notice("please consider using the driver defaults, " 2230 "and refer to up-to-date thinkpad-acpi " 2231 "documentation\n"); 2232 } 2233 2234 /* Try to enable what the user asked for, plus whatever we need. 2235 * this syncs everything but won't enable bits in hotkey_user_mask */ 2236 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2237 2238 /* Enable the available bits in hotkey_user_mask */ 2239 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2240 2241 return rc; 2242 } 2243 2244 /* 2245 * Sets the driver hotkey mask. 2246 * 2247 * Can be called even if the hotkey subdriver is inactive 2248 */ 2249 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2250 { 2251 int rc; 2252 2253 /* Do the right thing if hotkey_init has not been called yet */ 2254 if (!tp_features.hotkey) { 2255 hotkey_driver_mask = mask; 2256 return 0; 2257 } 2258 2259 mutex_lock(&hotkey_mutex); 2260 2261 HOTKEY_CONFIG_CRITICAL_START 2262 hotkey_driver_mask = mask; 2263 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2264 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2265 #endif 2266 HOTKEY_CONFIG_CRITICAL_END 2267 2268 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2269 ~hotkey_source_mask); 2270 hotkey_poll_setup(true); 2271 2272 mutex_unlock(&hotkey_mutex); 2273 2274 return rc; 2275 } 2276 2277 static int hotkey_status_get(int *status) 2278 { 2279 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2280 return -EIO; 2281 2282 return 0; 2283 } 2284 2285 static int hotkey_status_set(bool enable) 2286 { 2287 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2288 return -EIO; 2289 2290 return 0; 2291 } 2292 2293 static void tpacpi_input_send_tabletsw(void) 2294 { 2295 int state; 2296 2297 if (tp_features.hotkey_tablet && 2298 !hotkey_get_tablet_mode(&state)) { 2299 mutex_lock(&tpacpi_inputdev_send_mutex); 2300 2301 input_report_switch(tpacpi_inputdev, 2302 SW_TABLET_MODE, !!state); 2303 input_sync(tpacpi_inputdev); 2304 2305 mutex_unlock(&tpacpi_inputdev_send_mutex); 2306 } 2307 } 2308 2309 /* Do NOT call without validating scancode first */ 2310 static void tpacpi_input_send_key(const unsigned int scancode) 2311 { 2312 const unsigned int keycode = hotkey_keycode_map[scancode]; 2313 2314 if (keycode != KEY_RESERVED) { 2315 mutex_lock(&tpacpi_inputdev_send_mutex); 2316 2317 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2318 input_report_key(tpacpi_inputdev, keycode, 1); 2319 input_sync(tpacpi_inputdev); 2320 2321 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2322 input_report_key(tpacpi_inputdev, keycode, 0); 2323 input_sync(tpacpi_inputdev); 2324 2325 mutex_unlock(&tpacpi_inputdev_send_mutex); 2326 } 2327 } 2328 2329 /* Do NOT call without validating scancode first */ 2330 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2331 { 2332 hotkey_driver_event(scancode); 2333 if (hotkey_user_mask & (1 << scancode)) 2334 tpacpi_input_send_key(scancode); 2335 } 2336 2337 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2338 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2339 2340 /* Do NOT call without validating scancode first */ 2341 static void tpacpi_hotkey_send_key(unsigned int scancode) 2342 { 2343 tpacpi_input_send_key_masked(scancode); 2344 } 2345 2346 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2347 { 2348 u8 d; 2349 2350 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2351 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2352 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2353 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2354 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2355 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2356 } 2357 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2358 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2359 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2360 } 2361 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2362 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2363 n->displayexp_toggle = 2364 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2365 } 2366 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2367 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2368 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2369 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2370 n->brightness_toggle = 2371 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2372 } 2373 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2374 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2375 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2376 >> TP_NVRAM_POS_LEVEL_VOLUME; 2377 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2378 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2379 } 2380 } 2381 2382 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2383 do { \ 2384 if ((event_mask & (1 << __scancode)) && \ 2385 oldn->__member != newn->__member) \ 2386 tpacpi_hotkey_send_key(__scancode); \ 2387 } while (0) 2388 2389 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2390 do { \ 2391 if (event_mask & (1 << __scancode)) \ 2392 tpacpi_hotkey_send_key(__scancode); \ 2393 } while (0) 2394 2395 static void issue_volchange(const unsigned int oldvol, 2396 const unsigned int newvol, 2397 const u32 event_mask) 2398 { 2399 unsigned int i = oldvol; 2400 2401 while (i > newvol) { 2402 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2403 i--; 2404 } 2405 while (i < newvol) { 2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2407 i++; 2408 } 2409 } 2410 2411 static void issue_brightnesschange(const unsigned int oldbrt, 2412 const unsigned int newbrt, 2413 const u32 event_mask) 2414 { 2415 unsigned int i = oldbrt; 2416 2417 while (i > newbrt) { 2418 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2419 i--; 2420 } 2421 while (i < newbrt) { 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2423 i++; 2424 } 2425 } 2426 2427 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2428 struct tp_nvram_state *newn, 2429 const u32 event_mask) 2430 { 2431 2432 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2433 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2434 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2435 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2436 2437 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2438 2439 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2440 2441 /* 2442 * Handle volume 2443 * 2444 * This code is supposed to duplicate the IBM firmware behaviour: 2445 * - Pressing MUTE issues mute hotkey message, even when already mute 2446 * - Pressing Volume up/down issues volume up/down hotkey messages, 2447 * even when already at maximum or minimum volume 2448 * - The act of unmuting issues volume up/down notification, 2449 * depending which key was used to unmute 2450 * 2451 * We are constrained to what the NVRAM can tell us, which is not much 2452 * and certainly not enough if more than one volume hotkey was pressed 2453 * since the last poll cycle. 2454 * 2455 * Just to make our life interesting, some newer Lenovo ThinkPads have 2456 * bugs in the BIOS and may fail to update volume_toggle properly. 2457 */ 2458 if (newn->mute) { 2459 /* muted */ 2460 if (!oldn->mute || 2461 oldn->volume_toggle != newn->volume_toggle || 2462 oldn->volume_level != newn->volume_level) { 2463 /* recently muted, or repeated mute keypress, or 2464 * multiple presses ending in mute */ 2465 issue_volchange(oldn->volume_level, newn->volume_level, 2466 event_mask); 2467 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2468 } 2469 } else { 2470 /* unmute */ 2471 if (oldn->mute) { 2472 /* recently unmuted, issue 'unmute' keypress */ 2473 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2474 } 2475 if (oldn->volume_level != newn->volume_level) { 2476 issue_volchange(oldn->volume_level, newn->volume_level, 2477 event_mask); 2478 } else if (oldn->volume_toggle != newn->volume_toggle) { 2479 /* repeated vol up/down keypress at end of scale ? */ 2480 if (newn->volume_level == 0) 2481 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2482 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2483 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2484 } 2485 } 2486 2487 /* handle brightness */ 2488 if (oldn->brightness_level != newn->brightness_level) { 2489 issue_brightnesschange(oldn->brightness_level, 2490 newn->brightness_level, event_mask); 2491 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2492 /* repeated key presses that didn't change state */ 2493 if (newn->brightness_level == 0) 2494 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2495 else if (newn->brightness_level >= bright_maxlvl 2496 && !tp_features.bright_unkfw) 2497 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2498 } 2499 2500 #undef TPACPI_COMPARE_KEY 2501 #undef TPACPI_MAY_SEND_KEY 2502 } 2503 2504 /* 2505 * Polling driver 2506 * 2507 * We track all events in hotkey_source_mask all the time, since 2508 * most of them are edge-based. We only issue those requested by 2509 * hotkey_user_mask or hotkey_driver_mask, though. 2510 */ 2511 static int hotkey_kthread(void *data) 2512 { 2513 struct tp_nvram_state s[2]; 2514 u32 poll_mask, event_mask; 2515 unsigned int si, so; 2516 unsigned long t; 2517 unsigned int change_detector; 2518 unsigned int poll_freq; 2519 bool was_frozen; 2520 2521 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2522 goto exit; 2523 2524 set_freezable(); 2525 2526 so = 0; 2527 si = 1; 2528 t = 0; 2529 2530 /* Initial state for compares */ 2531 mutex_lock(&hotkey_thread_data_mutex); 2532 change_detector = hotkey_config_change; 2533 poll_mask = hotkey_source_mask; 2534 event_mask = hotkey_source_mask & 2535 (hotkey_driver_mask | hotkey_user_mask); 2536 poll_freq = hotkey_poll_freq; 2537 mutex_unlock(&hotkey_thread_data_mutex); 2538 hotkey_read_nvram(&s[so], poll_mask); 2539 2540 while (!kthread_should_stop()) { 2541 if (t == 0) { 2542 if (likely(poll_freq)) 2543 t = 1000/poll_freq; 2544 else 2545 t = 100; /* should never happen... */ 2546 } 2547 t = msleep_interruptible(t); 2548 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2549 break; 2550 2551 if (t > 0 && !was_frozen) 2552 continue; 2553 2554 mutex_lock(&hotkey_thread_data_mutex); 2555 if (was_frozen || hotkey_config_change != change_detector) { 2556 /* forget old state on thaw or config change */ 2557 si = so; 2558 t = 0; 2559 change_detector = hotkey_config_change; 2560 } 2561 poll_mask = hotkey_source_mask; 2562 event_mask = hotkey_source_mask & 2563 (hotkey_driver_mask | hotkey_user_mask); 2564 poll_freq = hotkey_poll_freq; 2565 mutex_unlock(&hotkey_thread_data_mutex); 2566 2567 if (likely(poll_mask)) { 2568 hotkey_read_nvram(&s[si], poll_mask); 2569 if (likely(si != so)) { 2570 hotkey_compare_and_issue_event(&s[so], &s[si], 2571 event_mask); 2572 } 2573 } 2574 2575 so = si; 2576 si ^= 1; 2577 } 2578 2579 exit: 2580 return 0; 2581 } 2582 2583 /* call with hotkey_mutex held */ 2584 static void hotkey_poll_stop_sync(void) 2585 { 2586 if (tpacpi_hotkey_task) { 2587 kthread_stop(tpacpi_hotkey_task); 2588 tpacpi_hotkey_task = NULL; 2589 } 2590 } 2591 2592 /* call with hotkey_mutex held */ 2593 static void hotkey_poll_setup(const bool may_warn) 2594 { 2595 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2596 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2597 2598 if (hotkey_poll_freq > 0 && 2599 (poll_driver_mask || 2600 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2601 if (!tpacpi_hotkey_task) { 2602 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2603 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2604 if (IS_ERR(tpacpi_hotkey_task)) { 2605 tpacpi_hotkey_task = NULL; 2606 pr_err("could not create kernel thread " 2607 "for hotkey polling\n"); 2608 } 2609 } 2610 } else { 2611 hotkey_poll_stop_sync(); 2612 if (may_warn && (poll_driver_mask || poll_user_mask) && 2613 hotkey_poll_freq == 0) { 2614 pr_notice("hot keys 0x%08x and/or events 0x%08x " 2615 "require polling, which is currently " 2616 "disabled\n", 2617 poll_user_mask, poll_driver_mask); 2618 } 2619 } 2620 } 2621 2622 static void hotkey_poll_setup_safe(const bool may_warn) 2623 { 2624 mutex_lock(&hotkey_mutex); 2625 hotkey_poll_setup(may_warn); 2626 mutex_unlock(&hotkey_mutex); 2627 } 2628 2629 /* call with hotkey_mutex held */ 2630 static void hotkey_poll_set_freq(unsigned int freq) 2631 { 2632 if (!freq) 2633 hotkey_poll_stop_sync(); 2634 2635 hotkey_poll_freq = freq; 2636 } 2637 2638 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2639 2640 static void hotkey_poll_setup(const bool __unused) 2641 { 2642 } 2643 2644 static void hotkey_poll_setup_safe(const bool __unused) 2645 { 2646 } 2647 2648 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2649 2650 static int hotkey_inputdev_open(struct input_dev *dev) 2651 { 2652 switch (tpacpi_lifecycle) { 2653 case TPACPI_LIFE_INIT: 2654 case TPACPI_LIFE_RUNNING: 2655 hotkey_poll_setup_safe(false); 2656 return 0; 2657 case TPACPI_LIFE_EXITING: 2658 return -EBUSY; 2659 } 2660 2661 /* Should only happen if tpacpi_lifecycle is corrupt */ 2662 BUG(); 2663 return -EBUSY; 2664 } 2665 2666 static void hotkey_inputdev_close(struct input_dev *dev) 2667 { 2668 /* disable hotkey polling when possible */ 2669 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2670 !(hotkey_source_mask & hotkey_driver_mask)) 2671 hotkey_poll_setup_safe(false); 2672 } 2673 2674 /* sysfs hotkey enable ------------------------------------------------- */ 2675 static ssize_t hotkey_enable_show(struct device *dev, 2676 struct device_attribute *attr, 2677 char *buf) 2678 { 2679 int res, status; 2680 2681 printk_deprecated_attribute("hotkey_enable", 2682 "Hotkey reporting is always enabled"); 2683 2684 res = hotkey_status_get(&status); 2685 if (res) 2686 return res; 2687 2688 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2689 } 2690 2691 static ssize_t hotkey_enable_store(struct device *dev, 2692 struct device_attribute *attr, 2693 const char *buf, size_t count) 2694 { 2695 unsigned long t; 2696 2697 printk_deprecated_attribute("hotkey_enable", 2698 "Hotkeys can be disabled through hotkey_mask"); 2699 2700 if (parse_strtoul(buf, 1, &t)) 2701 return -EINVAL; 2702 2703 if (t == 0) 2704 return -EPERM; 2705 2706 return count; 2707 } 2708 2709 static DEVICE_ATTR_RW(hotkey_enable); 2710 2711 /* sysfs hotkey mask --------------------------------------------------- */ 2712 static ssize_t hotkey_mask_show(struct device *dev, 2713 struct device_attribute *attr, 2714 char *buf) 2715 { 2716 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2717 } 2718 2719 static ssize_t hotkey_mask_store(struct device *dev, 2720 struct device_attribute *attr, 2721 const char *buf, size_t count) 2722 { 2723 unsigned long t; 2724 int res; 2725 2726 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2727 return -EINVAL; 2728 2729 if (mutex_lock_killable(&hotkey_mutex)) 2730 return -ERESTARTSYS; 2731 2732 res = hotkey_user_mask_set(t); 2733 2734 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2735 hotkey_poll_setup(true); 2736 #endif 2737 2738 mutex_unlock(&hotkey_mutex); 2739 2740 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2741 2742 return (res) ? res : count; 2743 } 2744 2745 static DEVICE_ATTR_RW(hotkey_mask); 2746 2747 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2748 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2749 struct device_attribute *attr, 2750 char *buf) 2751 { 2752 return sprintf(buf, "0\n"); 2753 } 2754 2755 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2756 2757 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2758 static ssize_t hotkey_bios_mask_show(struct device *dev, 2759 struct device_attribute *attr, 2760 char *buf) 2761 { 2762 printk_deprecated_attribute("hotkey_bios_mask", 2763 "This attribute is useless."); 2764 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2765 } 2766 2767 static DEVICE_ATTR_RO(hotkey_bios_mask); 2768 2769 /* sysfs hotkey all_mask ----------------------------------------------- */ 2770 static ssize_t hotkey_all_mask_show(struct device *dev, 2771 struct device_attribute *attr, 2772 char *buf) 2773 { 2774 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2775 hotkey_all_mask | hotkey_source_mask); 2776 } 2777 2778 static DEVICE_ATTR_RO(hotkey_all_mask); 2779 2780 /* sysfs hotkey all_mask ----------------------------------------------- */ 2781 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2782 struct device_attribute *attr, 2783 char *buf) 2784 { 2785 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2786 hotkey_adaptive_all_mask | hotkey_source_mask); 2787 } 2788 2789 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2790 2791 /* sysfs hotkey recommended_mask --------------------------------------- */ 2792 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2793 struct device_attribute *attr, 2794 char *buf) 2795 { 2796 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2797 (hotkey_all_mask | hotkey_source_mask) 2798 & ~hotkey_reserved_mask); 2799 } 2800 2801 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2802 2803 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2804 2805 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2806 static ssize_t hotkey_source_mask_show(struct device *dev, 2807 struct device_attribute *attr, 2808 char *buf) 2809 { 2810 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2811 } 2812 2813 static ssize_t hotkey_source_mask_store(struct device *dev, 2814 struct device_attribute *attr, 2815 const char *buf, size_t count) 2816 { 2817 unsigned long t; 2818 u32 r_ev; 2819 int rc; 2820 2821 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2822 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2823 return -EINVAL; 2824 2825 if (mutex_lock_killable(&hotkey_mutex)) 2826 return -ERESTARTSYS; 2827 2828 HOTKEY_CONFIG_CRITICAL_START 2829 hotkey_source_mask = t; 2830 HOTKEY_CONFIG_CRITICAL_END 2831 2832 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2833 ~hotkey_source_mask); 2834 hotkey_poll_setup(true); 2835 2836 /* check if events needed by the driver got disabled */ 2837 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2838 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2839 2840 mutex_unlock(&hotkey_mutex); 2841 2842 if (rc < 0) 2843 pr_err("hotkey_source_mask: " 2844 "failed to update the firmware event mask!\n"); 2845 2846 if (r_ev) 2847 pr_notice("hotkey_source_mask: " 2848 "some important events were disabled: 0x%04x\n", 2849 r_ev); 2850 2851 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2852 2853 return (rc < 0) ? rc : count; 2854 } 2855 2856 static DEVICE_ATTR_RW(hotkey_source_mask); 2857 2858 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2859 static ssize_t hotkey_poll_freq_show(struct device *dev, 2860 struct device_attribute *attr, 2861 char *buf) 2862 { 2863 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2864 } 2865 2866 static ssize_t hotkey_poll_freq_store(struct device *dev, 2867 struct device_attribute *attr, 2868 const char *buf, size_t count) 2869 { 2870 unsigned long t; 2871 2872 if (parse_strtoul(buf, 25, &t)) 2873 return -EINVAL; 2874 2875 if (mutex_lock_killable(&hotkey_mutex)) 2876 return -ERESTARTSYS; 2877 2878 hotkey_poll_set_freq(t); 2879 hotkey_poll_setup(true); 2880 2881 mutex_unlock(&hotkey_mutex); 2882 2883 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2884 2885 return count; 2886 } 2887 2888 static DEVICE_ATTR_RW(hotkey_poll_freq); 2889 2890 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2891 2892 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2893 static ssize_t hotkey_radio_sw_show(struct device *dev, 2894 struct device_attribute *attr, 2895 char *buf) 2896 { 2897 int res; 2898 res = hotkey_get_wlsw(); 2899 if (res < 0) 2900 return res; 2901 2902 /* Opportunistic update */ 2903 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2904 2905 return snprintf(buf, PAGE_SIZE, "%d\n", 2906 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2907 } 2908 2909 static DEVICE_ATTR_RO(hotkey_radio_sw); 2910 2911 static void hotkey_radio_sw_notify_change(void) 2912 { 2913 if (tp_features.hotkey_wlsw) 2914 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2915 "hotkey_radio_sw"); 2916 } 2917 2918 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2919 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2920 struct device_attribute *attr, 2921 char *buf) 2922 { 2923 int res, s; 2924 res = hotkey_get_tablet_mode(&s); 2925 if (res < 0) 2926 return res; 2927 2928 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2929 } 2930 2931 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2932 2933 static void hotkey_tablet_mode_notify_change(void) 2934 { 2935 if (tp_features.hotkey_tablet) 2936 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2937 "hotkey_tablet_mode"); 2938 } 2939 2940 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2941 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2942 struct device_attribute *attr, 2943 char *buf) 2944 { 2945 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 2946 } 2947 2948 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2949 2950 static void hotkey_wakeup_reason_notify_change(void) 2951 { 2952 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2953 "wakeup_reason"); 2954 } 2955 2956 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2957 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2958 struct device_attribute *attr, 2959 char *buf) 2960 { 2961 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 2962 } 2963 2964 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2965 hotkey_wakeup_hotunplug_complete_show, NULL); 2966 2967 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2968 { 2969 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2970 "wakeup_hotunplug_complete"); 2971 } 2972 2973 /* sysfs adaptive kbd mode --------------------------------------------- */ 2974 2975 static int adaptive_keyboard_get_mode(void); 2976 static int adaptive_keyboard_set_mode(int new_mode); 2977 2978 enum ADAPTIVE_KEY_MODE { 2979 HOME_MODE, 2980 WEB_BROWSER_MODE, 2981 WEB_CONFERENCE_MODE, 2982 FUNCTION_MODE, 2983 LAYFLAT_MODE 2984 }; 2985 2986 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2987 struct device_attribute *attr, 2988 char *buf) 2989 { 2990 int current_mode; 2991 2992 current_mode = adaptive_keyboard_get_mode(); 2993 if (current_mode < 0) 2994 return current_mode; 2995 2996 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 2997 } 2998 2999 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3000 struct device_attribute *attr, 3001 const char *buf, size_t count) 3002 { 3003 unsigned long t; 3004 int res; 3005 3006 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3007 return -EINVAL; 3008 3009 res = adaptive_keyboard_set_mode(t); 3010 return (res < 0) ? res : count; 3011 } 3012 3013 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3014 3015 static struct attribute *adaptive_kbd_attributes[] = { 3016 &dev_attr_adaptive_kbd_mode.attr, 3017 NULL 3018 }; 3019 3020 static const struct attribute_group adaptive_kbd_attr_group = { 3021 .attrs = adaptive_kbd_attributes, 3022 }; 3023 3024 /* --------------------------------------------------------------------- */ 3025 3026 static struct attribute *hotkey_attributes[] __initdata = { 3027 &dev_attr_hotkey_enable.attr, 3028 &dev_attr_hotkey_bios_enabled.attr, 3029 &dev_attr_hotkey_bios_mask.attr, 3030 &dev_attr_wakeup_reason.attr, 3031 &dev_attr_wakeup_hotunplug_complete.attr, 3032 &dev_attr_hotkey_mask.attr, 3033 &dev_attr_hotkey_all_mask.attr, 3034 &dev_attr_hotkey_adaptive_all_mask.attr, 3035 &dev_attr_hotkey_recommended_mask.attr, 3036 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3037 &dev_attr_hotkey_source_mask.attr, 3038 &dev_attr_hotkey_poll_freq.attr, 3039 #endif 3040 }; 3041 3042 /* 3043 * Sync both the hw and sw blocking state of all switches 3044 */ 3045 static void tpacpi_send_radiosw_update(void) 3046 { 3047 int wlsw; 3048 3049 /* 3050 * We must sync all rfkill controllers *before* issuing any 3051 * rfkill input events, or we will race the rfkill core input 3052 * handler. 3053 * 3054 * tpacpi_inputdev_send_mutex works as a synchronization point 3055 * for the above. 3056 * 3057 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3058 */ 3059 3060 wlsw = hotkey_get_wlsw(); 3061 3062 /* Sync hw blocking state first if it is hw-blocked */ 3063 if (wlsw == TPACPI_RFK_RADIO_OFF) 3064 tpacpi_rfk_update_hwblock_state(true); 3065 3066 /* Sync sw blocking state */ 3067 tpacpi_rfk_update_swstate_all(); 3068 3069 /* Sync hw blocking state last if it is hw-unblocked */ 3070 if (wlsw == TPACPI_RFK_RADIO_ON) 3071 tpacpi_rfk_update_hwblock_state(false); 3072 3073 /* Issue rfkill input event for WLSW switch */ 3074 if (!(wlsw < 0)) { 3075 mutex_lock(&tpacpi_inputdev_send_mutex); 3076 3077 input_report_switch(tpacpi_inputdev, 3078 SW_RFKILL_ALL, (wlsw > 0)); 3079 input_sync(tpacpi_inputdev); 3080 3081 mutex_unlock(&tpacpi_inputdev_send_mutex); 3082 } 3083 3084 /* 3085 * this can be unconditional, as we will poll state again 3086 * if userspace uses the notify to read data 3087 */ 3088 hotkey_radio_sw_notify_change(); 3089 } 3090 3091 static void hotkey_exit(void) 3092 { 3093 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3094 mutex_lock(&hotkey_mutex); 3095 hotkey_poll_stop_sync(); 3096 mutex_unlock(&hotkey_mutex); 3097 #endif 3098 3099 if (hotkey_dev_attributes) 3100 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3101 3102 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3103 "restoring original HKEY status and mask\n"); 3104 /* yes, there is a bitwise or below, we want the 3105 * functions to be called even if one of them fail */ 3106 if (((tp_features.hotkey_mask && 3107 hotkey_mask_set(hotkey_orig_mask)) | 3108 hotkey_status_set(false)) != 0) 3109 pr_err("failed to restore hot key mask " 3110 "to BIOS defaults\n"); 3111 } 3112 3113 static void __init hotkey_unmap(const unsigned int scancode) 3114 { 3115 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3116 clear_bit(hotkey_keycode_map[scancode], 3117 tpacpi_inputdev->keybit); 3118 hotkey_keycode_map[scancode] = KEY_RESERVED; 3119 } 3120 } 3121 3122 /* 3123 * HKEY quirks: 3124 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3125 */ 3126 3127 #define TPACPI_HK_Q_INIMASK 0x0001 3128 3129 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3130 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3131 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3132 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3133 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3134 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3135 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3136 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3137 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3138 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3139 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3140 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3141 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3142 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3143 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3144 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3145 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3146 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3147 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3148 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3149 }; 3150 3151 typedef u16 tpacpi_keymap_entry_t; 3152 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3153 3154 static int hotkey_init_tablet_mode(void) 3155 { 3156 int in_tablet_mode = 0, res; 3157 char *type = NULL; 3158 3159 if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3160 /* For X41t, X60t, X61t Tablets... */ 3161 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3162 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3163 type = "MHKG"; 3164 } else if (acpi_evalf(ec_handle, &res, "CMMD", "qd")) { 3165 /* For X1 Yoga (2016) */ 3166 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_CMMD; 3167 in_tablet_mode = res == TP_EC_CMMD_TABLET_MODE; 3168 type = "CMMD"; 3169 } 3170 3171 if (!tp_features.hotkey_tablet) 3172 return 0; 3173 3174 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3175 type, in_tablet_mode ? "tablet" : "laptop"); 3176 3177 res = add_to_attr_set(hotkey_dev_attributes, 3178 &dev_attr_hotkey_tablet_mode.attr); 3179 if (res) 3180 return -1; 3181 3182 return in_tablet_mode; 3183 } 3184 3185 static int __init hotkey_init(struct ibm_init_struct *iibm) 3186 { 3187 /* Requirements for changing the default keymaps: 3188 * 3189 * 1. Many of the keys are mapped to KEY_RESERVED for very 3190 * good reasons. Do not change them unless you have deep 3191 * knowledge on the IBM and Lenovo ThinkPad firmware for 3192 * the various ThinkPad models. The driver behaves 3193 * differently for KEY_RESERVED: such keys have their 3194 * hot key mask *unset* in mask_recommended, and also 3195 * in the initial hot key mask programmed into the 3196 * firmware at driver load time, which means the firm- 3197 * ware may react very differently if you change them to 3198 * something else; 3199 * 3200 * 2. You must be subscribed to the linux-thinkpad and 3201 * ibm-acpi-devel mailing lists, and you should read the 3202 * list archives since 2007 if you want to change the 3203 * keymaps. This requirement exists so that you will 3204 * know the past history of problems with the thinkpad- 3205 * acpi driver keymaps, and also that you will be 3206 * listening to any bug reports; 3207 * 3208 * 3. Do not send thinkpad-acpi specific patches directly to 3209 * for merging, *ever*. Send them to the linux-acpi 3210 * mailinglist for comments. Merging is to be done only 3211 * through acpi-test and the ACPI maintainer. 3212 * 3213 * If the above is too much to ask, don't change the keymap. 3214 * Ask the thinkpad-acpi maintainer to do it, instead. 3215 */ 3216 3217 enum keymap_index { 3218 TPACPI_KEYMAP_IBM_GENERIC = 0, 3219 TPACPI_KEYMAP_LENOVO_GENERIC, 3220 }; 3221 3222 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3223 /* Generic keymap for IBM ThinkPads */ 3224 [TPACPI_KEYMAP_IBM_GENERIC] = { 3225 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3226 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3227 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3228 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3229 3230 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3231 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3232 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3233 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3234 3235 /* brightness: firmware always reacts to them */ 3236 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3237 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3238 3239 /* Thinklight: firmware always react to it */ 3240 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3241 3242 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3243 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3244 3245 /* Volume: firmware always react to it and reprograms 3246 * the built-in *extra* mixer. Never map it to control 3247 * another mixer by default. */ 3248 KEY_RESERVED, /* 0x14: VOLUME UP */ 3249 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3250 KEY_RESERVED, /* 0x16: MUTE */ 3251 3252 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3253 3254 /* (assignments unknown, please report if found) */ 3255 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3256 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3257 3258 /* No assignments, only used for Adaptive keyboards. */ 3259 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3260 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3261 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3262 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3263 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3264 3265 /* No assignment, used for newer Lenovo models */ 3266 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3267 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3268 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3269 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3270 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3271 KEY_UNKNOWN, KEY_UNKNOWN 3272 3273 }, 3274 3275 /* Generic keymap for Lenovo ThinkPads */ 3276 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3277 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3278 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3279 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3280 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3281 3282 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3283 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3284 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3285 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3286 3287 /* These should be enabled --only-- when ACPI video 3288 * is disabled (i.e. in "vendor" mode), and are handled 3289 * in a special way by the init code */ 3290 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3291 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3292 3293 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3294 3295 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3296 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3297 3298 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3299 * react to it and reprograms the built-in *extra* mixer. 3300 * Never map it to control another mixer by default. 3301 * 3302 * T60?, T61, R60?, R61: firmware and EC tries to send 3303 * these over the regular keyboard, so these are no-ops, 3304 * but there are still weird bugs re. MUTE, so do not 3305 * change unless you get test reports from all Lenovo 3306 * models. May cause the BIOS to interfere with the 3307 * HDA mixer. 3308 */ 3309 KEY_RESERVED, /* 0x14: VOLUME UP */ 3310 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3311 KEY_RESERVED, /* 0x16: MUTE */ 3312 3313 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3314 3315 /* (assignments unknown, please report if found) */ 3316 KEY_UNKNOWN, KEY_UNKNOWN, 3317 3318 /* 3319 * The mic mute button only sends 0x1a. It does not 3320 * automatically mute the mic or change the mute light. 3321 */ 3322 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3323 3324 /* (assignments unknown, please report if found) */ 3325 KEY_UNKNOWN, 3326 3327 /* Extra keys in use since the X240 / T440 / T540 */ 3328 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3329 3330 /* 3331 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3332 * The first item in this list is the Mute button which is 3333 * emitted with 0x103 through 3334 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3335 * symbol is held. 3336 * We'll need to offset those by 0x20. 3337 */ 3338 KEY_RESERVED, /* Mute held, 0x103 */ 3339 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3340 KEY_RESERVED, /* Clipping tool */ 3341 KEY_RESERVED, /* Cloud */ 3342 KEY_RESERVED, 3343 KEY_VOICECOMMAND, /* Voice */ 3344 KEY_RESERVED, 3345 KEY_RESERVED, /* Gestures */ 3346 KEY_RESERVED, 3347 KEY_RESERVED, 3348 KEY_RESERVED, 3349 KEY_CONFIG, /* Settings */ 3350 KEY_RESERVED, /* New tab */ 3351 KEY_REFRESH, /* Reload */ 3352 KEY_BACK, /* Back */ 3353 KEY_RESERVED, /* Microphone down */ 3354 KEY_RESERVED, /* Microphone up */ 3355 KEY_RESERVED, /* Microphone cancellation */ 3356 KEY_RESERVED, /* Camera mode */ 3357 KEY_RESERVED, /* Rotate display, 0x116 */ 3358 3359 /* 3360 * These are found in 2017 models (e.g. T470s, X270). 3361 * The lowest known value is 0x311, which according to 3362 * the manual should launch a user defined favorite 3363 * application. 3364 * 3365 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3366 * corresponding to 0x34. 3367 */ 3368 3369 /* (assignments unknown, please report if found) */ 3370 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3371 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3372 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3373 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3374 KEY_UNKNOWN, 3375 3376 KEY_FAVORITES, /* Favorite app, 0x311 */ 3377 KEY_RESERVED, /* Clipping tool */ 3378 KEY_RESERVED, 3379 KEY_BLUETOOTH, /* Bluetooth */ 3380 KEY_KEYBOARD /* Keyboard, 0x315 */ 3381 }, 3382 }; 3383 3384 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3385 /* Generic maps (fallback) */ 3386 { 3387 .vendor = PCI_VENDOR_ID_IBM, 3388 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3389 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3390 }, 3391 { 3392 .vendor = PCI_VENDOR_ID_LENOVO, 3393 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3394 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3395 }, 3396 }; 3397 3398 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3399 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3400 3401 int res, i; 3402 int status; 3403 int hkeyv; 3404 bool radiosw_state = false; 3405 bool tabletsw_state = false; 3406 3407 unsigned long quirks; 3408 unsigned long keymap_id; 3409 3410 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3411 "initializing hotkey subdriver\n"); 3412 3413 BUG_ON(!tpacpi_inputdev); 3414 BUG_ON(tpacpi_inputdev->open != NULL || 3415 tpacpi_inputdev->close != NULL); 3416 3417 TPACPI_ACPIHANDLE_INIT(hkey); 3418 mutex_init(&hotkey_mutex); 3419 3420 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3421 mutex_init(&hotkey_thread_data_mutex); 3422 #endif 3423 3424 /* hotkey not supported on 570 */ 3425 tp_features.hotkey = hkey_handle != NULL; 3426 3427 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3428 "hotkeys are %s\n", 3429 str_supported(tp_features.hotkey)); 3430 3431 if (!tp_features.hotkey) 3432 return 1; 3433 3434 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3435 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3436 3437 tpacpi_disable_brightness_delay(); 3438 3439 /* MUST have enough space for all attributes to be added to 3440 * hotkey_dev_attributes */ 3441 hotkey_dev_attributes = create_attr_set( 3442 ARRAY_SIZE(hotkey_attributes) + 2, 3443 NULL); 3444 if (!hotkey_dev_attributes) 3445 return -ENOMEM; 3446 res = add_many_to_attr_set(hotkey_dev_attributes, 3447 hotkey_attributes, 3448 ARRAY_SIZE(hotkey_attributes)); 3449 if (res) 3450 goto err_exit; 3451 3452 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3453 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3454 for HKEY interface version 0x100 */ 3455 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3456 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3457 "firmware HKEY interface version: 0x%x\n", 3458 hkeyv); 3459 3460 switch (hkeyv >> 8) { 3461 case 1: 3462 /* 3463 * MHKV 0x100 in A31, R40, R40e, 3464 * T4x, X31, and later 3465 */ 3466 3467 /* Paranoia check AND init hotkey_all_mask */ 3468 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3469 "MHKA", "qd")) { 3470 pr_err("missing MHKA handler, please report this to %s\n", 3471 TPACPI_MAIL); 3472 /* Fallback: pre-init for FN+F3,F4,F12 */ 3473 hotkey_all_mask = 0x080cU; 3474 } else { 3475 tp_features.hotkey_mask = 1; 3476 } 3477 break; 3478 3479 case 2: 3480 /* 3481 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3482 */ 3483 3484 /* Paranoia check AND init hotkey_all_mask */ 3485 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3486 "MHKA", "dd", 1)) { 3487 pr_err("missing MHKA handler, please report this to %s\n", 3488 TPACPI_MAIL); 3489 /* Fallback: pre-init for FN+F3,F4,F12 */ 3490 hotkey_all_mask = 0x080cU; 3491 } else { 3492 tp_features.hotkey_mask = 1; 3493 } 3494 3495 /* 3496 * Check if we have an adaptive keyboard, like on the 3497 * Lenovo Carbon X1 2014 (2nd Gen). 3498 */ 3499 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3500 "MHKA", "dd", 2)) { 3501 if (hotkey_adaptive_all_mask != 0) { 3502 tp_features.has_adaptive_kbd = true; 3503 res = sysfs_create_group( 3504 &tpacpi_pdev->dev.kobj, 3505 &adaptive_kbd_attr_group); 3506 if (res) 3507 goto err_exit; 3508 } 3509 } else { 3510 tp_features.has_adaptive_kbd = false; 3511 hotkey_adaptive_all_mask = 0x0U; 3512 } 3513 break; 3514 3515 default: 3516 pr_err("unknown version of the HKEY interface: 0x%x\n", 3517 hkeyv); 3518 pr_err("please report this to %s\n", TPACPI_MAIL); 3519 break; 3520 } 3521 } 3522 3523 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3524 "hotkey masks are %s\n", 3525 str_supported(tp_features.hotkey_mask)); 3526 3527 /* Init hotkey_all_mask if not initialized yet */ 3528 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3529 (quirks & TPACPI_HK_Q_INIMASK)) 3530 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3531 3532 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3533 if (tp_features.hotkey_mask) { 3534 /* hotkey_source_mask *must* be zero for 3535 * the first hotkey_mask_get to return hotkey_orig_mask */ 3536 res = hotkey_mask_get(); 3537 if (res) 3538 goto err_exit; 3539 3540 hotkey_orig_mask = hotkey_acpi_mask; 3541 } else { 3542 hotkey_orig_mask = hotkey_all_mask; 3543 hotkey_acpi_mask = hotkey_all_mask; 3544 } 3545 3546 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3547 if (dbg_wlswemul) { 3548 tp_features.hotkey_wlsw = 1; 3549 radiosw_state = !!tpacpi_wlsw_emulstate; 3550 pr_info("radio switch emulation enabled\n"); 3551 } else 3552 #endif 3553 /* Not all thinkpads have a hardware radio switch */ 3554 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3555 tp_features.hotkey_wlsw = 1; 3556 radiosw_state = !!status; 3557 pr_info("radio switch found; radios are %s\n", 3558 enabled(status, 0)); 3559 } 3560 if (tp_features.hotkey_wlsw) 3561 res = add_to_attr_set(hotkey_dev_attributes, 3562 &dev_attr_hotkey_radio_sw.attr); 3563 3564 res = hotkey_init_tablet_mode(); 3565 if (res < 0) 3566 goto err_exit; 3567 3568 tabletsw_state = res; 3569 3570 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3571 &tpacpi_pdev->dev.kobj); 3572 if (res) 3573 goto err_exit; 3574 3575 /* Set up key map */ 3576 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, 3577 GFP_KERNEL); 3578 if (!hotkey_keycode_map) { 3579 pr_err("failed to allocate memory for key map\n"); 3580 res = -ENOMEM; 3581 goto err_exit; 3582 } 3583 3584 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3585 ARRAY_SIZE(tpacpi_keymap_qtable)); 3586 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3587 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3588 "using keymap number %lu\n", keymap_id); 3589 3590 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id], 3591 TPACPI_HOTKEY_MAP_SIZE); 3592 3593 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3594 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3595 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3596 tpacpi_inputdev->keycode = hotkey_keycode_map; 3597 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3598 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3599 input_set_capability(tpacpi_inputdev, EV_KEY, 3600 hotkey_keycode_map[i]); 3601 } else { 3602 if (i < sizeof(hotkey_reserved_mask)*8) 3603 hotkey_reserved_mask |= 1 << i; 3604 } 3605 } 3606 3607 if (tp_features.hotkey_wlsw) { 3608 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3609 input_report_switch(tpacpi_inputdev, 3610 SW_RFKILL_ALL, radiosw_state); 3611 } 3612 if (tp_features.hotkey_tablet) { 3613 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3614 input_report_switch(tpacpi_inputdev, 3615 SW_TABLET_MODE, tabletsw_state); 3616 } 3617 3618 /* Do not issue duplicate brightness change events to 3619 * userspace. tpacpi_detect_brightness_capabilities() must have 3620 * been called before this point */ 3621 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3622 pr_info("This ThinkPad has standard ACPI backlight " 3623 "brightness control, supported by the ACPI " 3624 "video driver\n"); 3625 pr_notice("Disabling thinkpad-acpi brightness events " 3626 "by default...\n"); 3627 3628 /* Disable brightness up/down on Lenovo thinkpads when 3629 * ACPI is handling them, otherwise it is plain impossible 3630 * for userspace to do something even remotely sane */ 3631 hotkey_reserved_mask |= 3632 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3633 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3634 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3635 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3636 } 3637 3638 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3639 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3640 & ~hotkey_all_mask 3641 & ~hotkey_reserved_mask; 3642 3643 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3644 "hotkey source mask 0x%08x, polling freq %u\n", 3645 hotkey_source_mask, hotkey_poll_freq); 3646 #endif 3647 3648 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3649 "enabling firmware HKEY event interface...\n"); 3650 res = hotkey_status_set(true); 3651 if (res) { 3652 hotkey_exit(); 3653 return res; 3654 } 3655 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3656 | hotkey_driver_mask) 3657 & ~hotkey_source_mask); 3658 if (res < 0 && res != -ENXIO) { 3659 hotkey_exit(); 3660 return res; 3661 } 3662 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3663 & ~hotkey_reserved_mask; 3664 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3665 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3666 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3667 3668 tpacpi_inputdev->open = &hotkey_inputdev_open; 3669 tpacpi_inputdev->close = &hotkey_inputdev_close; 3670 3671 hotkey_poll_setup_safe(true); 3672 3673 return 0; 3674 3675 err_exit: 3676 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3677 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3678 &adaptive_kbd_attr_group); 3679 3680 hotkey_dev_attributes = NULL; 3681 3682 return (res < 0) ? res : 1; 3683 } 3684 3685 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3686 * mode, Web conference mode, Function mode and Lay-flat mode. 3687 * We support Home mode and Function mode currently. 3688 * 3689 * Will consider support rest of modes in future. 3690 * 3691 */ 3692 static const int adaptive_keyboard_modes[] = { 3693 HOME_MODE, 3694 /* WEB_BROWSER_MODE = 2, 3695 WEB_CONFERENCE_MODE = 3, */ 3696 FUNCTION_MODE 3697 }; 3698 3699 #define DFR_CHANGE_ROW 0x101 3700 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3701 #define FIRST_ADAPTIVE_KEY 0x103 3702 3703 /* press Fn key a while second, it will switch to Function Mode. Then 3704 * release Fn key, previous mode be restored. 3705 */ 3706 static bool adaptive_keyboard_mode_is_saved; 3707 static int adaptive_keyboard_prev_mode; 3708 3709 static int adaptive_keyboard_get_mode(void) 3710 { 3711 int mode = 0; 3712 3713 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3714 pr_err("Cannot read adaptive keyboard mode\n"); 3715 return -EIO; 3716 } 3717 3718 return mode; 3719 } 3720 3721 static int adaptive_keyboard_set_mode(int new_mode) 3722 { 3723 if (new_mode < 0 || 3724 new_mode > LAYFLAT_MODE) 3725 return -EINVAL; 3726 3727 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3728 pr_err("Cannot set adaptive keyboard mode\n"); 3729 return -EIO; 3730 } 3731 3732 return 0; 3733 } 3734 3735 static int adaptive_keyboard_get_next_mode(int mode) 3736 { 3737 size_t i; 3738 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3739 3740 for (i = 0; i <= max_mode; i++) { 3741 if (adaptive_keyboard_modes[i] == mode) 3742 break; 3743 } 3744 3745 if (i >= max_mode) 3746 i = 0; 3747 else 3748 i++; 3749 3750 return adaptive_keyboard_modes[i]; 3751 } 3752 3753 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3754 { 3755 int current_mode = 0; 3756 int new_mode = 0; 3757 int keycode; 3758 3759 switch (scancode) { 3760 case DFR_CHANGE_ROW: 3761 if (adaptive_keyboard_mode_is_saved) { 3762 new_mode = adaptive_keyboard_prev_mode; 3763 adaptive_keyboard_mode_is_saved = false; 3764 } else { 3765 current_mode = adaptive_keyboard_get_mode(); 3766 if (current_mode < 0) 3767 return false; 3768 new_mode = adaptive_keyboard_get_next_mode( 3769 current_mode); 3770 } 3771 3772 if (adaptive_keyboard_set_mode(new_mode) < 0) 3773 return false; 3774 3775 return true; 3776 3777 case DFR_SHOW_QUICKVIEW_ROW: 3778 current_mode = adaptive_keyboard_get_mode(); 3779 if (current_mode < 0) 3780 return false; 3781 3782 adaptive_keyboard_prev_mode = current_mode; 3783 adaptive_keyboard_mode_is_saved = true; 3784 3785 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3786 return false; 3787 return true; 3788 3789 default: 3790 if (scancode < FIRST_ADAPTIVE_KEY || 3791 scancode >= FIRST_ADAPTIVE_KEY + 3792 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3793 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3794 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3795 scancode); 3796 return false; 3797 } 3798 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3799 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3800 if (keycode != KEY_RESERVED) { 3801 mutex_lock(&tpacpi_inputdev_send_mutex); 3802 3803 input_report_key(tpacpi_inputdev, keycode, 1); 3804 input_sync(tpacpi_inputdev); 3805 3806 input_report_key(tpacpi_inputdev, keycode, 0); 3807 input_sync(tpacpi_inputdev); 3808 3809 mutex_unlock(&tpacpi_inputdev_send_mutex); 3810 } 3811 return true; 3812 } 3813 } 3814 3815 static bool hotkey_notify_hotkey(const u32 hkey, 3816 bool *send_acpi_ev, 3817 bool *ignore_acpi_ev) 3818 { 3819 /* 0x1000-0x1FFF: key presses */ 3820 unsigned int scancode = hkey & 0xfff; 3821 *send_acpi_ev = true; 3822 *ignore_acpi_ev = false; 3823 3824 /* 3825 * Original events are in the 0x10XX range, the adaptive keyboard 3826 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3827 * models, additional keys are emitted through 0x13XX. 3828 */ 3829 switch ((hkey >> 8) & 0xf) { 3830 case 0: 3831 if (scancode > 0 && 3832 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3833 /* HKEY event 0x1001 is scancode 0x00 */ 3834 scancode--; 3835 if (!(hotkey_source_mask & (1 << scancode))) { 3836 tpacpi_input_send_key_masked(scancode); 3837 *send_acpi_ev = false; 3838 } else { 3839 *ignore_acpi_ev = true; 3840 } 3841 return true; 3842 } 3843 break; 3844 3845 case 1: 3846 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3847 3848 case 3: 3849 /* Extended keycodes start at 0x300 and our offset into the map 3850 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3851 * will be positive, but might not be in the correct range. 3852 */ 3853 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3854 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3855 scancode < TPACPI_HOTKEY_MAP_LEN) { 3856 tpacpi_input_send_key(scancode); 3857 return true; 3858 } 3859 break; 3860 } 3861 3862 return false; 3863 } 3864 3865 static bool hotkey_notify_wakeup(const u32 hkey, 3866 bool *send_acpi_ev, 3867 bool *ignore_acpi_ev) 3868 { 3869 /* 0x2000-0x2FFF: Wakeup reason */ 3870 *send_acpi_ev = true; 3871 *ignore_acpi_ev = false; 3872 3873 switch (hkey) { 3874 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3875 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3876 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3877 *ignore_acpi_ev = true; 3878 break; 3879 3880 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3881 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3882 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3883 *ignore_acpi_ev = true; 3884 break; 3885 3886 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3887 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3888 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3889 /* how to auto-heal: */ 3890 /* 2313: woke up from S3, go to S4/S5 */ 3891 /* 2413: woke up from S4, go to S5 */ 3892 break; 3893 3894 default: 3895 return false; 3896 } 3897 3898 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3899 pr_info("woke up due to a hot-unplug request...\n"); 3900 hotkey_wakeup_reason_notify_change(); 3901 } 3902 return true; 3903 } 3904 3905 static bool hotkey_notify_dockevent(const u32 hkey, 3906 bool *send_acpi_ev, 3907 bool *ignore_acpi_ev) 3908 { 3909 /* 0x4000-0x4FFF: dock-related events */ 3910 *send_acpi_ev = true; 3911 *ignore_acpi_ev = false; 3912 3913 switch (hkey) { 3914 case TP_HKEY_EV_UNDOCK_ACK: 3915 /* ACPI undock operation completed after wakeup */ 3916 hotkey_autosleep_ack = 1; 3917 pr_info("undocked\n"); 3918 hotkey_wakeup_hotunplug_complete_notify_change(); 3919 return true; 3920 3921 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3922 pr_info("docked into hotplug port replicator\n"); 3923 return true; 3924 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3925 pr_info("undocked from hotplug port replicator\n"); 3926 return true; 3927 3928 default: 3929 return false; 3930 } 3931 } 3932 3933 static bool hotkey_notify_usrevent(const u32 hkey, 3934 bool *send_acpi_ev, 3935 bool *ignore_acpi_ev) 3936 { 3937 /* 0x5000-0x5FFF: human interface helpers */ 3938 *send_acpi_ev = true; 3939 *ignore_acpi_ev = false; 3940 3941 switch (hkey) { 3942 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3943 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3944 return true; 3945 3946 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3947 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3948 tpacpi_input_send_tabletsw(); 3949 hotkey_tablet_mode_notify_change(); 3950 *send_acpi_ev = false; 3951 return true; 3952 3953 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3954 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3955 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3956 /* do not propagate these events */ 3957 *ignore_acpi_ev = true; 3958 return true; 3959 3960 default: 3961 return false; 3962 } 3963 } 3964 3965 static void thermal_dump_all_sensors(void); 3966 3967 static bool hotkey_notify_6xxx(const u32 hkey, 3968 bool *send_acpi_ev, 3969 bool *ignore_acpi_ev) 3970 { 3971 bool known = true; 3972 3973 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3974 *send_acpi_ev = true; 3975 *ignore_acpi_ev = false; 3976 3977 switch (hkey) { 3978 case TP_HKEY_EV_THM_TABLE_CHANGED: 3979 pr_info("EC reports that Thermal Table has changed\n"); 3980 /* recommended action: do nothing, we don't have 3981 * Lenovo ATM information */ 3982 return true; 3983 case TP_HKEY_EV_ALARM_BAT_HOT: 3984 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3985 /* recommended action: warn user through gui */ 3986 break; 3987 case TP_HKEY_EV_ALARM_BAT_XHOT: 3988 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3989 /* recommended action: immediate sleep/hibernate */ 3990 break; 3991 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3992 pr_crit("THERMAL ALARM: " 3993 "a sensor reports something is too hot!\n"); 3994 /* recommended action: warn user through gui, that */ 3995 /* some internal component is too hot */ 3996 break; 3997 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3998 pr_alert("THERMAL EMERGENCY: " 3999 "a sensor reports something is extremely hot!\n"); 4000 /* recommended action: immediate sleep/hibernate */ 4001 break; 4002 case TP_HKEY_EV_AC_CHANGED: 4003 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4004 * AC status changed; can be triggered by plugging or 4005 * unplugging AC adapter, docking or undocking. */ 4006 4007 /* fallthrough */ 4008 4009 case TP_HKEY_EV_KEY_NUMLOCK: 4010 case TP_HKEY_EV_KEY_FN: 4011 case TP_HKEY_EV_KEY_FN_ESC: 4012 /* key press events, we just ignore them as long as the EC 4013 * is still reporting them in the normal keyboard stream */ 4014 *send_acpi_ev = false; 4015 *ignore_acpi_ev = true; 4016 return true; 4017 4018 case TP_HKEY_EV_TABLET_CHANGED: 4019 tpacpi_input_send_tabletsw(); 4020 hotkey_tablet_mode_notify_change(); 4021 *send_acpi_ev = false; 4022 break; 4023 4024 default: 4025 pr_warn("unknown possible thermal alarm or keyboard event received\n"); 4026 known = false; 4027 } 4028 4029 thermal_dump_all_sensors(); 4030 4031 return known; 4032 } 4033 4034 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4035 { 4036 u32 hkey; 4037 bool send_acpi_ev; 4038 bool ignore_acpi_ev; 4039 bool known_ev; 4040 4041 if (event != 0x80) { 4042 pr_err("unknown HKEY notification event %d\n", event); 4043 /* forward it to userspace, maybe it knows how to handle it */ 4044 acpi_bus_generate_netlink_event( 4045 ibm->acpi->device->pnp.device_class, 4046 dev_name(&ibm->acpi->device->dev), 4047 event, 0); 4048 return; 4049 } 4050 4051 while (1) { 4052 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4053 pr_err("failed to retrieve HKEY event\n"); 4054 return; 4055 } 4056 4057 if (hkey == 0) { 4058 /* queue empty */ 4059 return; 4060 } 4061 4062 send_acpi_ev = true; 4063 ignore_acpi_ev = false; 4064 4065 switch (hkey >> 12) { 4066 case 1: 4067 /* 0x1000-0x1FFF: key presses */ 4068 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4069 &ignore_acpi_ev); 4070 break; 4071 case 2: 4072 /* 0x2000-0x2FFF: Wakeup reason */ 4073 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4074 &ignore_acpi_ev); 4075 break; 4076 case 3: 4077 /* 0x3000-0x3FFF: bay-related wakeups */ 4078 switch (hkey) { 4079 case TP_HKEY_EV_BAYEJ_ACK: 4080 hotkey_autosleep_ack = 1; 4081 pr_info("bay ejected\n"); 4082 hotkey_wakeup_hotunplug_complete_notify_change(); 4083 known_ev = true; 4084 break; 4085 case TP_HKEY_EV_OPTDRV_EJ: 4086 /* FIXME: kick libata if SATA link offline */ 4087 known_ev = true; 4088 break; 4089 default: 4090 known_ev = false; 4091 } 4092 break; 4093 case 4: 4094 /* 0x4000-0x4FFF: dock-related events */ 4095 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4096 &ignore_acpi_ev); 4097 break; 4098 case 5: 4099 /* 0x5000-0x5FFF: human interface helpers */ 4100 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4101 &ignore_acpi_ev); 4102 break; 4103 case 6: 4104 /* 0x6000-0x6FFF: thermal alarms/notices and 4105 * keyboard events */ 4106 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4107 &ignore_acpi_ev); 4108 break; 4109 case 7: 4110 /* 0x7000-0x7FFF: misc */ 4111 if (tp_features.hotkey_wlsw && 4112 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4113 tpacpi_send_radiosw_update(); 4114 send_acpi_ev = 0; 4115 known_ev = true; 4116 break; 4117 } 4118 /* fallthrough to default */ 4119 default: 4120 known_ev = false; 4121 } 4122 if (!known_ev) { 4123 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4124 pr_notice("please report the conditions when this " 4125 "event happened to %s\n", TPACPI_MAIL); 4126 } 4127 4128 /* netlink events */ 4129 if (!ignore_acpi_ev && send_acpi_ev) { 4130 acpi_bus_generate_netlink_event( 4131 ibm->acpi->device->pnp.device_class, 4132 dev_name(&ibm->acpi->device->dev), 4133 event, hkey); 4134 } 4135 } 4136 } 4137 4138 static void hotkey_suspend(void) 4139 { 4140 /* Do these on suspend, we get the events on early resume! */ 4141 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4142 hotkey_autosleep_ack = 0; 4143 4144 /* save previous mode of adaptive keyboard of X1 Carbon */ 4145 if (tp_features.has_adaptive_kbd) { 4146 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4147 "GTRW", "dd", 0)) { 4148 pr_err("Cannot read adaptive keyboard mode.\n"); 4149 } 4150 } 4151 } 4152 4153 static void hotkey_resume(void) 4154 { 4155 tpacpi_disable_brightness_delay(); 4156 4157 if (hotkey_status_set(true) < 0 || 4158 hotkey_mask_set(hotkey_acpi_mask) < 0) 4159 pr_err("error while attempting to reset the event " 4160 "firmware interface\n"); 4161 4162 tpacpi_send_radiosw_update(); 4163 hotkey_tablet_mode_notify_change(); 4164 hotkey_wakeup_reason_notify_change(); 4165 hotkey_wakeup_hotunplug_complete_notify_change(); 4166 hotkey_poll_setup_safe(false); 4167 4168 /* restore previous mode of adapive keyboard of X1 Carbon */ 4169 if (tp_features.has_adaptive_kbd) { 4170 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4171 adaptive_keyboard_prev_mode)) { 4172 pr_err("Cannot set adaptive keyboard mode.\n"); 4173 } 4174 } 4175 } 4176 4177 /* procfs -------------------------------------------------------------- */ 4178 static int hotkey_read(struct seq_file *m) 4179 { 4180 int res, status; 4181 4182 if (!tp_features.hotkey) { 4183 seq_printf(m, "status:\t\tnot supported\n"); 4184 return 0; 4185 } 4186 4187 if (mutex_lock_killable(&hotkey_mutex)) 4188 return -ERESTARTSYS; 4189 res = hotkey_status_get(&status); 4190 if (!res) 4191 res = hotkey_mask_get(); 4192 mutex_unlock(&hotkey_mutex); 4193 if (res) 4194 return res; 4195 4196 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4197 if (hotkey_all_mask) { 4198 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4199 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4200 } else { 4201 seq_printf(m, "mask:\t\tnot supported\n"); 4202 seq_printf(m, "commands:\tenable, disable, reset\n"); 4203 } 4204 4205 return 0; 4206 } 4207 4208 static void hotkey_enabledisable_warn(bool enable) 4209 { 4210 tpacpi_log_usertask("procfs hotkey enable/disable"); 4211 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4212 pr_fmt("hotkey enable/disable functionality has been " 4213 "removed from the driver. " 4214 "Hotkeys are always enabled.\n"))) 4215 pr_err("Please remove the hotkey=enable module " 4216 "parameter, it is deprecated. " 4217 "Hotkeys are always enabled.\n"); 4218 } 4219 4220 static int hotkey_write(char *buf) 4221 { 4222 int res; 4223 u32 mask; 4224 char *cmd; 4225 4226 if (!tp_features.hotkey) 4227 return -ENODEV; 4228 4229 if (mutex_lock_killable(&hotkey_mutex)) 4230 return -ERESTARTSYS; 4231 4232 mask = hotkey_user_mask; 4233 4234 res = 0; 4235 while ((cmd = next_cmd(&buf))) { 4236 if (strlencmp(cmd, "enable") == 0) { 4237 hotkey_enabledisable_warn(1); 4238 } else if (strlencmp(cmd, "disable") == 0) { 4239 hotkey_enabledisable_warn(0); 4240 res = -EPERM; 4241 } else if (strlencmp(cmd, "reset") == 0) { 4242 mask = (hotkey_all_mask | hotkey_source_mask) 4243 & ~hotkey_reserved_mask; 4244 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4245 /* mask set */ 4246 } else if (sscanf(cmd, "%x", &mask) == 1) { 4247 /* mask set */ 4248 } else { 4249 res = -EINVAL; 4250 goto errexit; 4251 } 4252 } 4253 4254 if (!res) { 4255 tpacpi_disclose_usertask("procfs hotkey", 4256 "set mask to 0x%08x\n", mask); 4257 res = hotkey_user_mask_set(mask); 4258 } 4259 4260 errexit: 4261 mutex_unlock(&hotkey_mutex); 4262 return res; 4263 } 4264 4265 static const struct acpi_device_id ibm_htk_device_ids[] = { 4266 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4267 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4268 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4269 {"", 0}, 4270 }; 4271 4272 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4273 .hid = ibm_htk_device_ids, 4274 .notify = hotkey_notify, 4275 .handle = &hkey_handle, 4276 .type = ACPI_DEVICE_NOTIFY, 4277 }; 4278 4279 static struct ibm_struct hotkey_driver_data = { 4280 .name = "hotkey", 4281 .read = hotkey_read, 4282 .write = hotkey_write, 4283 .exit = hotkey_exit, 4284 .resume = hotkey_resume, 4285 .suspend = hotkey_suspend, 4286 .acpi = &ibm_hotkey_acpidriver, 4287 }; 4288 4289 /************************************************************************* 4290 * Bluetooth subdriver 4291 */ 4292 4293 enum { 4294 /* ACPI GBDC/SBDC bits */ 4295 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4296 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4297 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4298 0 = disable, 1 = enable */ 4299 }; 4300 4301 enum { 4302 /* ACPI \BLTH commands */ 4303 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4304 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4305 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4306 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4307 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4308 }; 4309 4310 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4311 4312 static int bluetooth_get_status(void) 4313 { 4314 int status; 4315 4316 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4317 if (dbg_bluetoothemul) 4318 return (tpacpi_bluetooth_emulstate) ? 4319 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4320 #endif 4321 4322 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4323 return -EIO; 4324 4325 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4326 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4327 } 4328 4329 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4330 { 4331 int status; 4332 4333 vdbg_printk(TPACPI_DBG_RFKILL, 4334 "will attempt to %s bluetooth\n", 4335 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4336 4337 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4338 if (dbg_bluetoothemul) { 4339 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4340 return 0; 4341 } 4342 #endif 4343 4344 if (state == TPACPI_RFK_RADIO_ON) 4345 status = TP_ACPI_BLUETOOTH_RADIOSSW 4346 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4347 else 4348 status = 0; 4349 4350 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4351 return -EIO; 4352 4353 return 0; 4354 } 4355 4356 /* sysfs bluetooth enable ---------------------------------------------- */ 4357 static ssize_t bluetooth_enable_show(struct device *dev, 4358 struct device_attribute *attr, 4359 char *buf) 4360 { 4361 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4362 attr, buf); 4363 } 4364 4365 static ssize_t bluetooth_enable_store(struct device *dev, 4366 struct device_attribute *attr, 4367 const char *buf, size_t count) 4368 { 4369 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4370 attr, buf, count); 4371 } 4372 4373 static DEVICE_ATTR_RW(bluetooth_enable); 4374 4375 /* --------------------------------------------------------------------- */ 4376 4377 static struct attribute *bluetooth_attributes[] = { 4378 &dev_attr_bluetooth_enable.attr, 4379 NULL 4380 }; 4381 4382 static const struct attribute_group bluetooth_attr_group = { 4383 .attrs = bluetooth_attributes, 4384 }; 4385 4386 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4387 .get_status = bluetooth_get_status, 4388 .set_status = bluetooth_set_status, 4389 }; 4390 4391 static void bluetooth_shutdown(void) 4392 { 4393 /* Order firmware to save current state to NVRAM */ 4394 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4395 TP_ACPI_BLTH_SAVE_STATE)) 4396 pr_notice("failed to save bluetooth state to NVRAM\n"); 4397 else 4398 vdbg_printk(TPACPI_DBG_RFKILL, 4399 "bluetooth state saved to NVRAM\n"); 4400 } 4401 4402 static void bluetooth_exit(void) 4403 { 4404 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4405 &bluetooth_attr_group); 4406 4407 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4408 4409 bluetooth_shutdown(); 4410 } 4411 4412 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4413 { 4414 int res; 4415 int status = 0; 4416 4417 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4418 "initializing bluetooth subdriver\n"); 4419 4420 TPACPI_ACPIHANDLE_INIT(hkey); 4421 4422 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4423 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4424 tp_features.bluetooth = hkey_handle && 4425 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4426 4427 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4428 "bluetooth is %s, status 0x%02x\n", 4429 str_supported(tp_features.bluetooth), 4430 status); 4431 4432 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4433 if (dbg_bluetoothemul) { 4434 tp_features.bluetooth = 1; 4435 pr_info("bluetooth switch emulation enabled\n"); 4436 } else 4437 #endif 4438 if (tp_features.bluetooth && 4439 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4440 /* no bluetooth hardware present in system */ 4441 tp_features.bluetooth = 0; 4442 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4443 "bluetooth hardware not installed\n"); 4444 } 4445 4446 if (!tp_features.bluetooth) 4447 return 1; 4448 4449 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4450 &bluetooth_tprfk_ops, 4451 RFKILL_TYPE_BLUETOOTH, 4452 TPACPI_RFK_BLUETOOTH_SW_NAME, 4453 true); 4454 if (res) 4455 return res; 4456 4457 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4458 &bluetooth_attr_group); 4459 if (res) { 4460 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4461 return res; 4462 } 4463 4464 return 0; 4465 } 4466 4467 /* procfs -------------------------------------------------------------- */ 4468 static int bluetooth_read(struct seq_file *m) 4469 { 4470 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4471 } 4472 4473 static int bluetooth_write(char *buf) 4474 { 4475 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4476 } 4477 4478 static struct ibm_struct bluetooth_driver_data = { 4479 .name = "bluetooth", 4480 .read = bluetooth_read, 4481 .write = bluetooth_write, 4482 .exit = bluetooth_exit, 4483 .shutdown = bluetooth_shutdown, 4484 }; 4485 4486 /************************************************************************* 4487 * Wan subdriver 4488 */ 4489 4490 enum { 4491 /* ACPI GWAN/SWAN bits */ 4492 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4493 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4494 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4495 0 = disable, 1 = enable */ 4496 }; 4497 4498 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4499 4500 static int wan_get_status(void) 4501 { 4502 int status; 4503 4504 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4505 if (dbg_wwanemul) 4506 return (tpacpi_wwan_emulstate) ? 4507 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4508 #endif 4509 4510 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4511 return -EIO; 4512 4513 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4514 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4515 } 4516 4517 static int wan_set_status(enum tpacpi_rfkill_state state) 4518 { 4519 int status; 4520 4521 vdbg_printk(TPACPI_DBG_RFKILL, 4522 "will attempt to %s wwan\n", 4523 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4524 4525 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4526 if (dbg_wwanemul) { 4527 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4528 return 0; 4529 } 4530 #endif 4531 4532 if (state == TPACPI_RFK_RADIO_ON) 4533 status = TP_ACPI_WANCARD_RADIOSSW 4534 | TP_ACPI_WANCARD_RESUMECTRL; 4535 else 4536 status = 0; 4537 4538 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4539 return -EIO; 4540 4541 return 0; 4542 } 4543 4544 /* sysfs wan enable ---------------------------------------------------- */ 4545 static ssize_t wan_enable_show(struct device *dev, 4546 struct device_attribute *attr, 4547 char *buf) 4548 { 4549 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4550 attr, buf); 4551 } 4552 4553 static ssize_t wan_enable_store(struct device *dev, 4554 struct device_attribute *attr, 4555 const char *buf, size_t count) 4556 { 4557 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4558 attr, buf, count); 4559 } 4560 4561 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4562 wan_enable_show, wan_enable_store); 4563 4564 /* --------------------------------------------------------------------- */ 4565 4566 static struct attribute *wan_attributes[] = { 4567 &dev_attr_wwan_enable.attr, 4568 NULL 4569 }; 4570 4571 static const struct attribute_group wan_attr_group = { 4572 .attrs = wan_attributes, 4573 }; 4574 4575 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4576 .get_status = wan_get_status, 4577 .set_status = wan_set_status, 4578 }; 4579 4580 static void wan_shutdown(void) 4581 { 4582 /* Order firmware to save current state to NVRAM */ 4583 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4584 TP_ACPI_WGSV_SAVE_STATE)) 4585 pr_notice("failed to save WWAN state to NVRAM\n"); 4586 else 4587 vdbg_printk(TPACPI_DBG_RFKILL, 4588 "WWAN state saved to NVRAM\n"); 4589 } 4590 4591 static void wan_exit(void) 4592 { 4593 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4594 &wan_attr_group); 4595 4596 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4597 4598 wan_shutdown(); 4599 } 4600 4601 static int __init wan_init(struct ibm_init_struct *iibm) 4602 { 4603 int res; 4604 int status = 0; 4605 4606 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4607 "initializing wan subdriver\n"); 4608 4609 TPACPI_ACPIHANDLE_INIT(hkey); 4610 4611 tp_features.wan = hkey_handle && 4612 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4613 4614 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4615 "wan is %s, status 0x%02x\n", 4616 str_supported(tp_features.wan), 4617 status); 4618 4619 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4620 if (dbg_wwanemul) { 4621 tp_features.wan = 1; 4622 pr_info("wwan switch emulation enabled\n"); 4623 } else 4624 #endif 4625 if (tp_features.wan && 4626 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4627 /* no wan hardware present in system */ 4628 tp_features.wan = 0; 4629 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4630 "wan hardware not installed\n"); 4631 } 4632 4633 if (!tp_features.wan) 4634 return 1; 4635 4636 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4637 &wan_tprfk_ops, 4638 RFKILL_TYPE_WWAN, 4639 TPACPI_RFK_WWAN_SW_NAME, 4640 true); 4641 if (res) 4642 return res; 4643 4644 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4645 &wan_attr_group); 4646 4647 if (res) { 4648 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4649 return res; 4650 } 4651 4652 return 0; 4653 } 4654 4655 /* procfs -------------------------------------------------------------- */ 4656 static int wan_read(struct seq_file *m) 4657 { 4658 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4659 } 4660 4661 static int wan_write(char *buf) 4662 { 4663 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4664 } 4665 4666 static struct ibm_struct wan_driver_data = { 4667 .name = "wan", 4668 .read = wan_read, 4669 .write = wan_write, 4670 .exit = wan_exit, 4671 .shutdown = wan_shutdown, 4672 }; 4673 4674 /************************************************************************* 4675 * UWB subdriver 4676 */ 4677 4678 enum { 4679 /* ACPI GUWB/SUWB bits */ 4680 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4681 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4682 }; 4683 4684 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4685 4686 static int uwb_get_status(void) 4687 { 4688 int status; 4689 4690 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4691 if (dbg_uwbemul) 4692 return (tpacpi_uwb_emulstate) ? 4693 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4694 #endif 4695 4696 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4697 return -EIO; 4698 4699 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4700 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4701 } 4702 4703 static int uwb_set_status(enum tpacpi_rfkill_state state) 4704 { 4705 int status; 4706 4707 vdbg_printk(TPACPI_DBG_RFKILL, 4708 "will attempt to %s UWB\n", 4709 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4710 4711 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4712 if (dbg_uwbemul) { 4713 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4714 return 0; 4715 } 4716 #endif 4717 4718 if (state == TPACPI_RFK_RADIO_ON) 4719 status = TP_ACPI_UWB_RADIOSSW; 4720 else 4721 status = 0; 4722 4723 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4724 return -EIO; 4725 4726 return 0; 4727 } 4728 4729 /* --------------------------------------------------------------------- */ 4730 4731 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4732 .get_status = uwb_get_status, 4733 .set_status = uwb_set_status, 4734 }; 4735 4736 static void uwb_exit(void) 4737 { 4738 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4739 } 4740 4741 static int __init uwb_init(struct ibm_init_struct *iibm) 4742 { 4743 int res; 4744 int status = 0; 4745 4746 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4747 "initializing uwb subdriver\n"); 4748 4749 TPACPI_ACPIHANDLE_INIT(hkey); 4750 4751 tp_features.uwb = hkey_handle && 4752 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4753 4754 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4755 "uwb is %s, status 0x%02x\n", 4756 str_supported(tp_features.uwb), 4757 status); 4758 4759 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4760 if (dbg_uwbemul) { 4761 tp_features.uwb = 1; 4762 pr_info("uwb switch emulation enabled\n"); 4763 } else 4764 #endif 4765 if (tp_features.uwb && 4766 !(status & TP_ACPI_UWB_HWPRESENT)) { 4767 /* no uwb hardware present in system */ 4768 tp_features.uwb = 0; 4769 dbg_printk(TPACPI_DBG_INIT, 4770 "uwb hardware not installed\n"); 4771 } 4772 4773 if (!tp_features.uwb) 4774 return 1; 4775 4776 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4777 &uwb_tprfk_ops, 4778 RFKILL_TYPE_UWB, 4779 TPACPI_RFK_UWB_SW_NAME, 4780 false); 4781 return res; 4782 } 4783 4784 static struct ibm_struct uwb_driver_data = { 4785 .name = "uwb", 4786 .exit = uwb_exit, 4787 .flags.experimental = 1, 4788 }; 4789 4790 /************************************************************************* 4791 * Video subdriver 4792 */ 4793 4794 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4795 4796 enum video_access_mode { 4797 TPACPI_VIDEO_NONE = 0, 4798 TPACPI_VIDEO_570, /* 570 */ 4799 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4800 TPACPI_VIDEO_NEW, /* all others */ 4801 }; 4802 4803 enum { /* video status flags, based on VIDEO_570 */ 4804 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4805 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4806 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4807 }; 4808 4809 enum { /* TPACPI_VIDEO_570 constants */ 4810 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4811 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4812 * video_status_flags */ 4813 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4814 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4815 }; 4816 4817 static enum video_access_mode video_supported; 4818 static int video_orig_autosw; 4819 4820 static int video_autosw_get(void); 4821 static int video_autosw_set(int enable); 4822 4823 TPACPI_HANDLE(vid, root, 4824 "\\_SB.PCI.AGP.VGA", /* 570 */ 4825 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4826 "\\_SB.PCI0.VID0", /* 770e */ 4827 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4828 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4829 "\\_SB.PCI0.AGP.VID", /* all others */ 4830 ); /* R30, R31 */ 4831 4832 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4833 4834 static int __init video_init(struct ibm_init_struct *iibm) 4835 { 4836 int ivga; 4837 4838 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4839 4840 TPACPI_ACPIHANDLE_INIT(vid); 4841 if (tpacpi_is_ibm()) 4842 TPACPI_ACPIHANDLE_INIT(vid2); 4843 4844 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4845 /* G41, assume IVGA doesn't change */ 4846 vid_handle = vid2_handle; 4847 4848 if (!vid_handle) 4849 /* video switching not supported on R30, R31 */ 4850 video_supported = TPACPI_VIDEO_NONE; 4851 else if (tpacpi_is_ibm() && 4852 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4853 /* 570 */ 4854 video_supported = TPACPI_VIDEO_570; 4855 else if (tpacpi_is_ibm() && 4856 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4857 /* 600e/x, 770e, 770x */ 4858 video_supported = TPACPI_VIDEO_770; 4859 else 4860 /* all others */ 4861 video_supported = TPACPI_VIDEO_NEW; 4862 4863 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4864 str_supported(video_supported != TPACPI_VIDEO_NONE), 4865 video_supported); 4866 4867 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 4868 } 4869 4870 static void video_exit(void) 4871 { 4872 dbg_printk(TPACPI_DBG_EXIT, 4873 "restoring original video autoswitch mode\n"); 4874 if (video_autosw_set(video_orig_autosw)) 4875 pr_err("error while trying to restore original " 4876 "video autoswitch mode\n"); 4877 } 4878 4879 static int video_outputsw_get(void) 4880 { 4881 int status = 0; 4882 int i; 4883 4884 switch (video_supported) { 4885 case TPACPI_VIDEO_570: 4886 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4887 TP_ACPI_VIDEO_570_PHSCMD)) 4888 return -EIO; 4889 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4890 break; 4891 case TPACPI_VIDEO_770: 4892 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4893 return -EIO; 4894 if (i) 4895 status |= TP_ACPI_VIDEO_S_LCD; 4896 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4897 return -EIO; 4898 if (i) 4899 status |= TP_ACPI_VIDEO_S_CRT; 4900 break; 4901 case TPACPI_VIDEO_NEW: 4902 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4903 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4904 return -EIO; 4905 if (i) 4906 status |= TP_ACPI_VIDEO_S_CRT; 4907 4908 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4909 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4910 return -EIO; 4911 if (i) 4912 status |= TP_ACPI_VIDEO_S_LCD; 4913 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4914 return -EIO; 4915 if (i) 4916 status |= TP_ACPI_VIDEO_S_DVI; 4917 break; 4918 default: 4919 return -ENOSYS; 4920 } 4921 4922 return status; 4923 } 4924 4925 static int video_outputsw_set(int status) 4926 { 4927 int autosw; 4928 int res = 0; 4929 4930 switch (video_supported) { 4931 case TPACPI_VIDEO_570: 4932 res = acpi_evalf(NULL, NULL, 4933 "\\_SB.PHS2", "vdd", 4934 TP_ACPI_VIDEO_570_PHS2CMD, 4935 status | TP_ACPI_VIDEO_570_PHS2SET); 4936 break; 4937 case TPACPI_VIDEO_770: 4938 autosw = video_autosw_get(); 4939 if (autosw < 0) 4940 return autosw; 4941 4942 res = video_autosw_set(1); 4943 if (res) 4944 return res; 4945 res = acpi_evalf(vid_handle, NULL, 4946 "ASWT", "vdd", status * 0x100, 0); 4947 if (!autosw && video_autosw_set(autosw)) { 4948 pr_err("video auto-switch left enabled due to error\n"); 4949 return -EIO; 4950 } 4951 break; 4952 case TPACPI_VIDEO_NEW: 4953 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4954 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4955 break; 4956 default: 4957 return -ENOSYS; 4958 } 4959 4960 return (res) ? 0 : -EIO; 4961 } 4962 4963 static int video_autosw_get(void) 4964 { 4965 int autosw = 0; 4966 4967 switch (video_supported) { 4968 case TPACPI_VIDEO_570: 4969 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4970 return -EIO; 4971 break; 4972 case TPACPI_VIDEO_770: 4973 case TPACPI_VIDEO_NEW: 4974 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4975 return -EIO; 4976 break; 4977 default: 4978 return -ENOSYS; 4979 } 4980 4981 return autosw & 1; 4982 } 4983 4984 static int video_autosw_set(int enable) 4985 { 4986 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 4987 return -EIO; 4988 return 0; 4989 } 4990 4991 static int video_outputsw_cycle(void) 4992 { 4993 int autosw = video_autosw_get(); 4994 int res; 4995 4996 if (autosw < 0) 4997 return autosw; 4998 4999 switch (video_supported) { 5000 case TPACPI_VIDEO_570: 5001 res = video_autosw_set(1); 5002 if (res) 5003 return res; 5004 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5005 break; 5006 case TPACPI_VIDEO_770: 5007 case TPACPI_VIDEO_NEW: 5008 res = video_autosw_set(1); 5009 if (res) 5010 return res; 5011 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5012 break; 5013 default: 5014 return -ENOSYS; 5015 } 5016 if (!autosw && video_autosw_set(autosw)) { 5017 pr_err("video auto-switch left enabled due to error\n"); 5018 return -EIO; 5019 } 5020 5021 return (res) ? 0 : -EIO; 5022 } 5023 5024 static int video_expand_toggle(void) 5025 { 5026 switch (video_supported) { 5027 case TPACPI_VIDEO_570: 5028 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5029 0 : -EIO; 5030 case TPACPI_VIDEO_770: 5031 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5032 0 : -EIO; 5033 case TPACPI_VIDEO_NEW: 5034 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5035 0 : -EIO; 5036 default: 5037 return -ENOSYS; 5038 } 5039 /* not reached */ 5040 } 5041 5042 static int video_read(struct seq_file *m) 5043 { 5044 int status, autosw; 5045 5046 if (video_supported == TPACPI_VIDEO_NONE) { 5047 seq_printf(m, "status:\t\tnot supported\n"); 5048 return 0; 5049 } 5050 5051 /* Even reads can crash X.org, so... */ 5052 if (!capable(CAP_SYS_ADMIN)) 5053 return -EPERM; 5054 5055 status = video_outputsw_get(); 5056 if (status < 0) 5057 return status; 5058 5059 autosw = video_autosw_get(); 5060 if (autosw < 0) 5061 return autosw; 5062 5063 seq_printf(m, "status:\t\tsupported\n"); 5064 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5065 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5066 if (video_supported == TPACPI_VIDEO_NEW) 5067 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5068 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5069 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5070 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5071 if (video_supported == TPACPI_VIDEO_NEW) 5072 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5073 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5074 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5075 5076 return 0; 5077 } 5078 5079 static int video_write(char *buf) 5080 { 5081 char *cmd; 5082 int enable, disable, status; 5083 int res; 5084 5085 if (video_supported == TPACPI_VIDEO_NONE) 5086 return -ENODEV; 5087 5088 /* Even reads can crash X.org, let alone writes... */ 5089 if (!capable(CAP_SYS_ADMIN)) 5090 return -EPERM; 5091 5092 enable = 0; 5093 disable = 0; 5094 5095 while ((cmd = next_cmd(&buf))) { 5096 if (strlencmp(cmd, "lcd_enable") == 0) { 5097 enable |= TP_ACPI_VIDEO_S_LCD; 5098 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5099 disable |= TP_ACPI_VIDEO_S_LCD; 5100 } else if (strlencmp(cmd, "crt_enable") == 0) { 5101 enable |= TP_ACPI_VIDEO_S_CRT; 5102 } else if (strlencmp(cmd, "crt_disable") == 0) { 5103 disable |= TP_ACPI_VIDEO_S_CRT; 5104 } else if (video_supported == TPACPI_VIDEO_NEW && 5105 strlencmp(cmd, "dvi_enable") == 0) { 5106 enable |= TP_ACPI_VIDEO_S_DVI; 5107 } else if (video_supported == TPACPI_VIDEO_NEW && 5108 strlencmp(cmd, "dvi_disable") == 0) { 5109 disable |= TP_ACPI_VIDEO_S_DVI; 5110 } else if (strlencmp(cmd, "auto_enable") == 0) { 5111 res = video_autosw_set(1); 5112 if (res) 5113 return res; 5114 } else if (strlencmp(cmd, "auto_disable") == 0) { 5115 res = video_autosw_set(0); 5116 if (res) 5117 return res; 5118 } else if (strlencmp(cmd, "video_switch") == 0) { 5119 res = video_outputsw_cycle(); 5120 if (res) 5121 return res; 5122 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5123 res = video_expand_toggle(); 5124 if (res) 5125 return res; 5126 } else 5127 return -EINVAL; 5128 } 5129 5130 if (enable || disable) { 5131 status = video_outputsw_get(); 5132 if (status < 0) 5133 return status; 5134 res = video_outputsw_set((status & ~disable) | enable); 5135 if (res) 5136 return res; 5137 } 5138 5139 return 0; 5140 } 5141 5142 static struct ibm_struct video_driver_data = { 5143 .name = "video", 5144 .read = video_read, 5145 .write = video_write, 5146 .exit = video_exit, 5147 }; 5148 5149 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5150 5151 /************************************************************************* 5152 * Keyboard backlight subdriver 5153 */ 5154 5155 static enum led_brightness kbdlight_brightness; 5156 static DEFINE_MUTEX(kbdlight_mutex); 5157 5158 static int kbdlight_set_level(int level) 5159 { 5160 int ret = 0; 5161 5162 if (!hkey_handle) 5163 return -ENXIO; 5164 5165 mutex_lock(&kbdlight_mutex); 5166 5167 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5168 ret = -EIO; 5169 else 5170 kbdlight_brightness = level; 5171 5172 mutex_unlock(&kbdlight_mutex); 5173 5174 return ret; 5175 } 5176 5177 static int kbdlight_get_level(void) 5178 { 5179 int status = 0; 5180 5181 if (!hkey_handle) 5182 return -ENXIO; 5183 5184 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5185 return -EIO; 5186 5187 if (status < 0) 5188 return status; 5189 5190 return status & 0x3; 5191 } 5192 5193 static bool kbdlight_is_supported(void) 5194 { 5195 int status = 0; 5196 5197 if (!hkey_handle) 5198 return false; 5199 5200 if (!acpi_has_method(hkey_handle, "MLCG")) { 5201 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5202 return false; 5203 } 5204 5205 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5206 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5207 return false; 5208 } 5209 5210 if (status < 0) { 5211 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5212 return false; 5213 } 5214 5215 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5216 /* 5217 * Guessed test for keyboard backlight: 5218 * 5219 * Machines with backlight keyboard return: 5220 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5221 * b110100010010000000XX - ThinkPad x230 5222 * b010100000010000000XX - ThinkPad x240 5223 * b010100000010000000XX - ThinkPad W541 5224 * (XX is current backlight level) 5225 * 5226 * Machines without backlight keyboard return: 5227 * b10100001000000000000 - ThinkPad x230 5228 * b10110001000000000000 - ThinkPad E430 5229 * b00000000000000000000 - ThinkPad E450 5230 * 5231 * Candidate BITs for detection test (XOR): 5232 * b01000000001000000000 5233 * ^ 5234 */ 5235 return status & BIT(9); 5236 } 5237 5238 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5239 enum led_brightness brightness) 5240 { 5241 return kbdlight_set_level(brightness); 5242 } 5243 5244 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5245 { 5246 int level; 5247 5248 level = kbdlight_get_level(); 5249 if (level < 0) 5250 return 0; 5251 5252 return level; 5253 } 5254 5255 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5256 .led_classdev = { 5257 .name = "tpacpi::kbd_backlight", 5258 .max_brightness = 2, 5259 .flags = LED_BRIGHT_HW_CHANGED, 5260 .brightness_set_blocking = &kbdlight_sysfs_set, 5261 .brightness_get = &kbdlight_sysfs_get, 5262 } 5263 }; 5264 5265 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5266 { 5267 int rc; 5268 5269 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5270 5271 TPACPI_ACPIHANDLE_INIT(hkey); 5272 5273 if (!kbdlight_is_supported()) { 5274 tp_features.kbdlight = 0; 5275 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5276 return 1; 5277 } 5278 5279 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5280 tp_features.kbdlight = 1; 5281 5282 rc = led_classdev_register(&tpacpi_pdev->dev, 5283 &tpacpi_led_kbdlight.led_classdev); 5284 if (rc < 0) { 5285 tp_features.kbdlight = 0; 5286 return rc; 5287 } 5288 5289 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5290 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5291 return 0; 5292 } 5293 5294 static void kbdlight_exit(void) 5295 { 5296 if (tp_features.kbdlight) 5297 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5298 } 5299 5300 static int kbdlight_set_level_and_update(int level) 5301 { 5302 int ret; 5303 struct led_classdev *led_cdev; 5304 5305 ret = kbdlight_set_level(level); 5306 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5307 5308 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5309 led_cdev->brightness = level; 5310 5311 return ret; 5312 } 5313 5314 static int kbdlight_read(struct seq_file *m) 5315 { 5316 int level; 5317 5318 if (!tp_features.kbdlight) { 5319 seq_printf(m, "status:\t\tnot supported\n"); 5320 } else { 5321 level = kbdlight_get_level(); 5322 if (level < 0) 5323 seq_printf(m, "status:\t\terror %d\n", level); 5324 else 5325 seq_printf(m, "status:\t\t%d\n", level); 5326 seq_printf(m, "commands:\t0, 1, 2\n"); 5327 } 5328 5329 return 0; 5330 } 5331 5332 static int kbdlight_write(char *buf) 5333 { 5334 char *cmd; 5335 int level = -1; 5336 5337 if (!tp_features.kbdlight) 5338 return -ENODEV; 5339 5340 while ((cmd = next_cmd(&buf))) { 5341 if (strlencmp(cmd, "0") == 0) 5342 level = 0; 5343 else if (strlencmp(cmd, "1") == 0) 5344 level = 1; 5345 else if (strlencmp(cmd, "2") == 0) 5346 level = 2; 5347 else 5348 return -EINVAL; 5349 } 5350 5351 if (level == -1) 5352 return -EINVAL; 5353 5354 return kbdlight_set_level_and_update(level); 5355 } 5356 5357 static void kbdlight_suspend(void) 5358 { 5359 struct led_classdev *led_cdev; 5360 5361 if (!tp_features.kbdlight) 5362 return; 5363 5364 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5365 led_update_brightness(led_cdev); 5366 led_classdev_suspend(led_cdev); 5367 } 5368 5369 static void kbdlight_resume(void) 5370 { 5371 if (!tp_features.kbdlight) 5372 return; 5373 5374 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5375 } 5376 5377 static struct ibm_struct kbdlight_driver_data = { 5378 .name = "kbdlight", 5379 .read = kbdlight_read, 5380 .write = kbdlight_write, 5381 .suspend = kbdlight_suspend, 5382 .resume = kbdlight_resume, 5383 .exit = kbdlight_exit, 5384 }; 5385 5386 /************************************************************************* 5387 * Light (thinklight) subdriver 5388 */ 5389 5390 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5391 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5392 5393 static int light_get_status(void) 5394 { 5395 int status = 0; 5396 5397 if (tp_features.light_status) { 5398 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5399 return -EIO; 5400 return (!!status); 5401 } 5402 5403 return -ENXIO; 5404 } 5405 5406 static int light_set_status(int status) 5407 { 5408 int rc; 5409 5410 if (tp_features.light) { 5411 if (cmos_handle) { 5412 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5413 (status) ? 5414 TP_CMOS_THINKLIGHT_ON : 5415 TP_CMOS_THINKLIGHT_OFF); 5416 } else { 5417 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5418 (status) ? 1 : 0); 5419 } 5420 return (rc) ? 0 : -EIO; 5421 } 5422 5423 return -ENXIO; 5424 } 5425 5426 static int light_sysfs_set(struct led_classdev *led_cdev, 5427 enum led_brightness brightness) 5428 { 5429 return light_set_status((brightness != LED_OFF) ? 5430 TPACPI_LED_ON : TPACPI_LED_OFF); 5431 } 5432 5433 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5434 { 5435 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5436 } 5437 5438 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5439 .led_classdev = { 5440 .name = "tpacpi::thinklight", 5441 .brightness_set_blocking = &light_sysfs_set, 5442 .brightness_get = &light_sysfs_get, 5443 } 5444 }; 5445 5446 static int __init light_init(struct ibm_init_struct *iibm) 5447 { 5448 int rc; 5449 5450 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5451 5452 if (tpacpi_is_ibm()) { 5453 TPACPI_ACPIHANDLE_INIT(ledb); 5454 TPACPI_ACPIHANDLE_INIT(lght); 5455 } 5456 TPACPI_ACPIHANDLE_INIT(cmos); 5457 5458 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5459 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5460 5461 if (tp_features.light) 5462 /* light status not supported on 5463 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5464 tp_features.light_status = 5465 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5466 5467 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5468 str_supported(tp_features.light), 5469 str_supported(tp_features.light_status)); 5470 5471 if (!tp_features.light) 5472 return 1; 5473 5474 rc = led_classdev_register(&tpacpi_pdev->dev, 5475 &tpacpi_led_thinklight.led_classdev); 5476 5477 if (rc < 0) { 5478 tp_features.light = 0; 5479 tp_features.light_status = 0; 5480 } else { 5481 rc = 0; 5482 } 5483 5484 return rc; 5485 } 5486 5487 static void light_exit(void) 5488 { 5489 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5490 } 5491 5492 static int light_read(struct seq_file *m) 5493 { 5494 int status; 5495 5496 if (!tp_features.light) { 5497 seq_printf(m, "status:\t\tnot supported\n"); 5498 } else if (!tp_features.light_status) { 5499 seq_printf(m, "status:\t\tunknown\n"); 5500 seq_printf(m, "commands:\ton, off\n"); 5501 } else { 5502 status = light_get_status(); 5503 if (status < 0) 5504 return status; 5505 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5506 seq_printf(m, "commands:\ton, off\n"); 5507 } 5508 5509 return 0; 5510 } 5511 5512 static int light_write(char *buf) 5513 { 5514 char *cmd; 5515 int newstatus = 0; 5516 5517 if (!tp_features.light) 5518 return -ENODEV; 5519 5520 while ((cmd = next_cmd(&buf))) { 5521 if (strlencmp(cmd, "on") == 0) { 5522 newstatus = 1; 5523 } else if (strlencmp(cmd, "off") == 0) { 5524 newstatus = 0; 5525 } else 5526 return -EINVAL; 5527 } 5528 5529 return light_set_status(newstatus); 5530 } 5531 5532 static struct ibm_struct light_driver_data = { 5533 .name = "light", 5534 .read = light_read, 5535 .write = light_write, 5536 .exit = light_exit, 5537 }; 5538 5539 /************************************************************************* 5540 * CMOS subdriver 5541 */ 5542 5543 /* sysfs cmos_command -------------------------------------------------- */ 5544 static ssize_t cmos_command_store(struct device *dev, 5545 struct device_attribute *attr, 5546 const char *buf, size_t count) 5547 { 5548 unsigned long cmos_cmd; 5549 int res; 5550 5551 if (parse_strtoul(buf, 21, &cmos_cmd)) 5552 return -EINVAL; 5553 5554 res = issue_thinkpad_cmos_command(cmos_cmd); 5555 return (res) ? res : count; 5556 } 5557 5558 static DEVICE_ATTR_WO(cmos_command); 5559 5560 /* --------------------------------------------------------------------- */ 5561 5562 static int __init cmos_init(struct ibm_init_struct *iibm) 5563 { 5564 int res; 5565 5566 vdbg_printk(TPACPI_DBG_INIT, 5567 "initializing cmos commands subdriver\n"); 5568 5569 TPACPI_ACPIHANDLE_INIT(cmos); 5570 5571 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5572 str_supported(cmos_handle != NULL)); 5573 5574 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5575 if (res) 5576 return res; 5577 5578 return (cmos_handle) ? 0 : 1; 5579 } 5580 5581 static void cmos_exit(void) 5582 { 5583 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5584 } 5585 5586 static int cmos_read(struct seq_file *m) 5587 { 5588 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5589 R30, R31, T20-22, X20-21 */ 5590 if (!cmos_handle) 5591 seq_printf(m, "status:\t\tnot supported\n"); 5592 else { 5593 seq_printf(m, "status:\t\tsupported\n"); 5594 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5595 } 5596 5597 return 0; 5598 } 5599 5600 static int cmos_write(char *buf) 5601 { 5602 char *cmd; 5603 int cmos_cmd, res; 5604 5605 while ((cmd = next_cmd(&buf))) { 5606 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5607 cmos_cmd >= 0 && cmos_cmd <= 21) { 5608 /* cmos_cmd set */ 5609 } else 5610 return -EINVAL; 5611 5612 res = issue_thinkpad_cmos_command(cmos_cmd); 5613 if (res) 5614 return res; 5615 } 5616 5617 return 0; 5618 } 5619 5620 static struct ibm_struct cmos_driver_data = { 5621 .name = "cmos", 5622 .read = cmos_read, 5623 .write = cmos_write, 5624 .exit = cmos_exit, 5625 }; 5626 5627 /************************************************************************* 5628 * LED subdriver 5629 */ 5630 5631 enum led_access_mode { 5632 TPACPI_LED_NONE = 0, 5633 TPACPI_LED_570, /* 570 */ 5634 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5635 TPACPI_LED_NEW, /* all others */ 5636 }; 5637 5638 enum { /* For TPACPI_LED_OLD */ 5639 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5640 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5641 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5642 }; 5643 5644 static enum led_access_mode led_supported; 5645 5646 static acpi_handle led_handle; 5647 5648 #define TPACPI_LED_NUMLEDS 16 5649 static struct tpacpi_led_classdev *tpacpi_leds; 5650 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5651 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5652 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5653 "tpacpi::power", 5654 "tpacpi:orange:batt", 5655 "tpacpi:green:batt", 5656 "tpacpi::dock_active", 5657 "tpacpi::bay_active", 5658 "tpacpi::dock_batt", 5659 "tpacpi::unknown_led", 5660 "tpacpi::standby", 5661 "tpacpi::dock_status1", 5662 "tpacpi::dock_status2", 5663 "tpacpi::unknown_led2", 5664 "tpacpi::unknown_led3", 5665 "tpacpi::thinkvantage", 5666 }; 5667 #define TPACPI_SAFE_LEDS 0x1081U 5668 5669 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5670 { 5671 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5672 return false; 5673 #else 5674 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5675 #endif 5676 } 5677 5678 static int led_get_status(const unsigned int led) 5679 { 5680 int status; 5681 enum led_status_t led_s; 5682 5683 switch (led_supported) { 5684 case TPACPI_LED_570: 5685 if (!acpi_evalf(ec_handle, 5686 &status, "GLED", "dd", 1 << led)) 5687 return -EIO; 5688 led_s = (status == 0) ? 5689 TPACPI_LED_OFF : 5690 ((status == 1) ? 5691 TPACPI_LED_ON : 5692 TPACPI_LED_BLINK); 5693 tpacpi_led_state_cache[led] = led_s; 5694 return led_s; 5695 default: 5696 return -ENXIO; 5697 } 5698 5699 /* not reached */ 5700 } 5701 5702 static int led_set_status(const unsigned int led, 5703 const enum led_status_t ledstatus) 5704 { 5705 /* off, on, blink. Index is led_status_t */ 5706 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5707 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5708 5709 int rc = 0; 5710 5711 switch (led_supported) { 5712 case TPACPI_LED_570: 5713 /* 570 */ 5714 if (unlikely(led > 7)) 5715 return -EINVAL; 5716 if (unlikely(tpacpi_is_led_restricted(led))) 5717 return -EPERM; 5718 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5719 (1 << led), led_sled_arg1[ledstatus])) 5720 rc = -EIO; 5721 break; 5722 case TPACPI_LED_OLD: 5723 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5724 if (unlikely(led > 7)) 5725 return -EINVAL; 5726 if (unlikely(tpacpi_is_led_restricted(led))) 5727 return -EPERM; 5728 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5729 if (rc >= 0) 5730 rc = ec_write(TPACPI_LED_EC_HLBL, 5731 (ledstatus == TPACPI_LED_BLINK) << led); 5732 if (rc >= 0) 5733 rc = ec_write(TPACPI_LED_EC_HLCL, 5734 (ledstatus != TPACPI_LED_OFF) << led); 5735 break; 5736 case TPACPI_LED_NEW: 5737 /* all others */ 5738 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5739 return -EINVAL; 5740 if (unlikely(tpacpi_is_led_restricted(led))) 5741 return -EPERM; 5742 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5743 led, led_led_arg1[ledstatus])) 5744 rc = -EIO; 5745 break; 5746 default: 5747 rc = -ENXIO; 5748 } 5749 5750 if (!rc) 5751 tpacpi_led_state_cache[led] = ledstatus; 5752 5753 return rc; 5754 } 5755 5756 static int led_sysfs_set(struct led_classdev *led_cdev, 5757 enum led_brightness brightness) 5758 { 5759 struct tpacpi_led_classdev *data = container_of(led_cdev, 5760 struct tpacpi_led_classdev, led_classdev); 5761 enum led_status_t new_state; 5762 5763 if (brightness == LED_OFF) 5764 new_state = TPACPI_LED_OFF; 5765 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5766 new_state = TPACPI_LED_ON; 5767 else 5768 new_state = TPACPI_LED_BLINK; 5769 5770 return led_set_status(data->led, new_state); 5771 } 5772 5773 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5774 unsigned long *delay_on, unsigned long *delay_off) 5775 { 5776 struct tpacpi_led_classdev *data = container_of(led_cdev, 5777 struct tpacpi_led_classdev, led_classdev); 5778 5779 /* Can we choose the flash rate? */ 5780 if (*delay_on == 0 && *delay_off == 0) { 5781 /* yes. set them to the hardware blink rate (1 Hz) */ 5782 *delay_on = 500; /* ms */ 5783 *delay_off = 500; /* ms */ 5784 } else if ((*delay_on != 500) || (*delay_off != 500)) 5785 return -EINVAL; 5786 5787 return led_set_status(data->led, TPACPI_LED_BLINK); 5788 } 5789 5790 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5791 { 5792 int rc; 5793 5794 struct tpacpi_led_classdev *data = container_of(led_cdev, 5795 struct tpacpi_led_classdev, led_classdev); 5796 5797 rc = led_get_status(data->led); 5798 5799 if (rc == TPACPI_LED_OFF || rc < 0) 5800 rc = LED_OFF; /* no error handling in led class :( */ 5801 else 5802 rc = LED_FULL; 5803 5804 return rc; 5805 } 5806 5807 static void led_exit(void) 5808 { 5809 unsigned int i; 5810 5811 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5812 if (tpacpi_leds[i].led_classdev.name) 5813 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5814 } 5815 5816 kfree(tpacpi_leds); 5817 } 5818 5819 static int __init tpacpi_init_led(unsigned int led) 5820 { 5821 int rc; 5822 5823 tpacpi_leds[led].led = led; 5824 5825 /* LEDs with no name don't get registered */ 5826 if (!tpacpi_led_names[led]) 5827 return 0; 5828 5829 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5830 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5831 if (led_supported == TPACPI_LED_570) 5832 tpacpi_leds[led].led_classdev.brightness_get = 5833 &led_sysfs_get; 5834 5835 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5836 5837 rc = led_classdev_register(&tpacpi_pdev->dev, 5838 &tpacpi_leds[led].led_classdev); 5839 if (rc < 0) 5840 tpacpi_leds[led].led_classdev.name = NULL; 5841 5842 return rc; 5843 } 5844 5845 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5846 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5847 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5848 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5849 5850 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5851 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5852 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5853 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5854 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5855 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5856 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5857 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5858 5859 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5860 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5861 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5862 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5863 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5864 5865 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5866 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5867 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5868 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5869 5870 /* (1) - may have excess leds enabled on MSB */ 5871 5872 /* Defaults (order matters, keep last, don't reorder!) */ 5873 { /* Lenovo */ 5874 .vendor = PCI_VENDOR_ID_LENOVO, 5875 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5876 .quirks = 0x1fffU, 5877 }, 5878 { /* IBM ThinkPads with no EC version string */ 5879 .vendor = PCI_VENDOR_ID_IBM, 5880 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5881 .quirks = 0x00ffU, 5882 }, 5883 { /* IBM ThinkPads with EC version string */ 5884 .vendor = PCI_VENDOR_ID_IBM, 5885 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5886 .quirks = 0x00bfU, 5887 }, 5888 }; 5889 5890 #undef TPACPI_LEDQ_IBM 5891 #undef TPACPI_LEDQ_LNV 5892 5893 static enum led_access_mode __init led_init_detect_mode(void) 5894 { 5895 acpi_status status; 5896 5897 if (tpacpi_is_ibm()) { 5898 /* 570 */ 5899 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5900 if (ACPI_SUCCESS(status)) 5901 return TPACPI_LED_570; 5902 5903 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5904 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5905 if (ACPI_SUCCESS(status)) 5906 return TPACPI_LED_OLD; 5907 } 5908 5909 /* most others */ 5910 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5911 if (ACPI_SUCCESS(status)) 5912 return TPACPI_LED_NEW; 5913 5914 /* R30, R31, and unknown firmwares */ 5915 led_handle = NULL; 5916 return TPACPI_LED_NONE; 5917 } 5918 5919 static int __init led_init(struct ibm_init_struct *iibm) 5920 { 5921 unsigned int i; 5922 int rc; 5923 unsigned long useful_leds; 5924 5925 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5926 5927 led_supported = led_init_detect_mode(); 5928 5929 if (led_supported != TPACPI_LED_NONE) { 5930 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5931 ARRAY_SIZE(led_useful_qtable)); 5932 5933 if (!useful_leds) { 5934 led_handle = NULL; 5935 led_supported = TPACPI_LED_NONE; 5936 } 5937 } 5938 5939 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5940 str_supported(led_supported), led_supported); 5941 5942 if (led_supported == TPACPI_LED_NONE) 5943 return 1; 5944 5945 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, 5946 GFP_KERNEL); 5947 if (!tpacpi_leds) { 5948 pr_err("Out of memory for LED data\n"); 5949 return -ENOMEM; 5950 } 5951 5952 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5953 tpacpi_leds[i].led = -1; 5954 5955 if (!tpacpi_is_led_restricted(i) && 5956 test_bit(i, &useful_leds)) { 5957 rc = tpacpi_init_led(i); 5958 if (rc < 0) { 5959 led_exit(); 5960 return rc; 5961 } 5962 } 5963 } 5964 5965 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5966 pr_notice("warning: userspace override of important " 5967 "firmware LEDs is enabled\n"); 5968 #endif 5969 return 0; 5970 } 5971 5972 #define str_led_status(s) \ 5973 ((s) == TPACPI_LED_OFF ? "off" : \ 5974 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 5975 5976 static int led_read(struct seq_file *m) 5977 { 5978 if (!led_supported) { 5979 seq_printf(m, "status:\t\tnot supported\n"); 5980 return 0; 5981 } 5982 seq_printf(m, "status:\t\tsupported\n"); 5983 5984 if (led_supported == TPACPI_LED_570) { 5985 /* 570 */ 5986 int i, status; 5987 for (i = 0; i < 8; i++) { 5988 status = led_get_status(i); 5989 if (status < 0) 5990 return -EIO; 5991 seq_printf(m, "%d:\t\t%s\n", 5992 i, str_led_status(status)); 5993 } 5994 } 5995 5996 seq_printf(m, "commands:\t" 5997 "<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5998 5999 return 0; 6000 } 6001 6002 static int led_write(char *buf) 6003 { 6004 char *cmd; 6005 int led, rc; 6006 enum led_status_t s; 6007 6008 if (!led_supported) 6009 return -ENODEV; 6010 6011 while ((cmd = next_cmd(&buf))) { 6012 if (sscanf(cmd, "%d", &led) != 1) 6013 return -EINVAL; 6014 6015 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || 6016 tpacpi_leds[led].led < 0) 6017 return -ENODEV; 6018 6019 if (strstr(cmd, "off")) { 6020 s = TPACPI_LED_OFF; 6021 } else if (strstr(cmd, "on")) { 6022 s = TPACPI_LED_ON; 6023 } else if (strstr(cmd, "blink")) { 6024 s = TPACPI_LED_BLINK; 6025 } else { 6026 return -EINVAL; 6027 } 6028 6029 rc = led_set_status(led, s); 6030 if (rc < 0) 6031 return rc; 6032 } 6033 6034 return 0; 6035 } 6036 6037 static struct ibm_struct led_driver_data = { 6038 .name = "led", 6039 .read = led_read, 6040 .write = led_write, 6041 .exit = led_exit, 6042 }; 6043 6044 /************************************************************************* 6045 * Beep subdriver 6046 */ 6047 6048 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6049 6050 #define TPACPI_BEEP_Q1 0x0001 6051 6052 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6053 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6054 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6055 }; 6056 6057 static int __init beep_init(struct ibm_init_struct *iibm) 6058 { 6059 unsigned long quirks; 6060 6061 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6062 6063 TPACPI_ACPIHANDLE_INIT(beep); 6064 6065 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6066 str_supported(beep_handle != NULL)); 6067 6068 quirks = tpacpi_check_quirks(beep_quirk_table, 6069 ARRAY_SIZE(beep_quirk_table)); 6070 6071 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6072 6073 return (beep_handle) ? 0 : 1; 6074 } 6075 6076 static int beep_read(struct seq_file *m) 6077 { 6078 if (!beep_handle) 6079 seq_printf(m, "status:\t\tnot supported\n"); 6080 else { 6081 seq_printf(m, "status:\t\tsupported\n"); 6082 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6083 } 6084 6085 return 0; 6086 } 6087 6088 static int beep_write(char *buf) 6089 { 6090 char *cmd; 6091 int beep_cmd; 6092 6093 if (!beep_handle) 6094 return -ENODEV; 6095 6096 while ((cmd = next_cmd(&buf))) { 6097 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6098 beep_cmd >= 0 && beep_cmd <= 17) { 6099 /* beep_cmd set */ 6100 } else 6101 return -EINVAL; 6102 if (tp_features.beep_needs_two_args) { 6103 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6104 beep_cmd, 0)) 6105 return -EIO; 6106 } else { 6107 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6108 beep_cmd)) 6109 return -EIO; 6110 } 6111 } 6112 6113 return 0; 6114 } 6115 6116 static struct ibm_struct beep_driver_data = { 6117 .name = "beep", 6118 .read = beep_read, 6119 .write = beep_write, 6120 }; 6121 6122 /************************************************************************* 6123 * Thermal subdriver 6124 */ 6125 6126 enum thermal_access_mode { 6127 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6128 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6129 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6130 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6131 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6132 }; 6133 6134 enum { /* TPACPI_THERMAL_TPEC_* */ 6135 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6136 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6137 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6138 6139 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6140 }; 6141 6142 6143 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6144 struct ibm_thermal_sensors_struct { 6145 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6146 }; 6147 6148 static enum thermal_access_mode thermal_read_mode; 6149 6150 /* idx is zero-based */ 6151 static int thermal_get_sensor(int idx, s32 *value) 6152 { 6153 int t; 6154 s8 tmp; 6155 char tmpi[5]; 6156 6157 t = TP_EC_THERMAL_TMP0; 6158 6159 switch (thermal_read_mode) { 6160 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6161 case TPACPI_THERMAL_TPEC_16: 6162 if (idx >= 8 && idx <= 15) { 6163 t = TP_EC_THERMAL_TMP8; 6164 idx -= 8; 6165 } 6166 /* fallthrough */ 6167 #endif 6168 case TPACPI_THERMAL_TPEC_8: 6169 if (idx <= 7) { 6170 if (!acpi_ec_read(t + idx, &tmp)) 6171 return -EIO; 6172 *value = tmp * 1000; 6173 return 0; 6174 } 6175 break; 6176 6177 case TPACPI_THERMAL_ACPI_UPDT: 6178 if (idx <= 7) { 6179 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6180 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6181 return -EIO; 6182 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6183 return -EIO; 6184 *value = (t - 2732) * 100; 6185 return 0; 6186 } 6187 break; 6188 6189 case TPACPI_THERMAL_ACPI_TMP07: 6190 if (idx <= 7) { 6191 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6192 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6193 return -EIO; 6194 if (t > 127 || t < -127) 6195 t = TP_EC_THERMAL_TMP_NA; 6196 *value = t * 1000; 6197 return 0; 6198 } 6199 break; 6200 6201 case TPACPI_THERMAL_NONE: 6202 default: 6203 return -ENOSYS; 6204 } 6205 6206 return -EINVAL; 6207 } 6208 6209 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6210 { 6211 int res, i; 6212 int n; 6213 6214 n = 8; 6215 i = 0; 6216 6217 if (!s) 6218 return -EINVAL; 6219 6220 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6221 n = 16; 6222 6223 for (i = 0 ; i < n; i++) { 6224 res = thermal_get_sensor(i, &s->temp[i]); 6225 if (res) 6226 return res; 6227 } 6228 6229 return n; 6230 } 6231 6232 static void thermal_dump_all_sensors(void) 6233 { 6234 int n, i; 6235 struct ibm_thermal_sensors_struct t; 6236 6237 n = thermal_get_sensors(&t); 6238 if (n <= 0) 6239 return; 6240 6241 pr_notice("temperatures (Celsius):"); 6242 6243 for (i = 0; i < n; i++) { 6244 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6245 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6246 else 6247 pr_cont(" N/A"); 6248 } 6249 6250 pr_cont("\n"); 6251 } 6252 6253 /* sysfs temp##_input -------------------------------------------------- */ 6254 6255 static ssize_t thermal_temp_input_show(struct device *dev, 6256 struct device_attribute *attr, 6257 char *buf) 6258 { 6259 struct sensor_device_attribute *sensor_attr = 6260 to_sensor_dev_attr(attr); 6261 int idx = sensor_attr->index; 6262 s32 value; 6263 int res; 6264 6265 res = thermal_get_sensor(idx, &value); 6266 if (res) 6267 return res; 6268 if (value == TPACPI_THERMAL_SENSOR_NA) 6269 return -ENXIO; 6270 6271 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6272 } 6273 6274 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6275 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6276 thermal_temp_input_show, NULL, _idxB) 6277 6278 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6279 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6280 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6281 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6282 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6283 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6284 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6285 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6286 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6287 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6288 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6289 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6290 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6291 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6292 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6293 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6294 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6295 }; 6296 6297 #define THERMAL_ATTRS(X) \ 6298 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6299 6300 static struct attribute *thermal_temp_input_attr[] = { 6301 THERMAL_ATTRS(8), 6302 THERMAL_ATTRS(9), 6303 THERMAL_ATTRS(10), 6304 THERMAL_ATTRS(11), 6305 THERMAL_ATTRS(12), 6306 THERMAL_ATTRS(13), 6307 THERMAL_ATTRS(14), 6308 THERMAL_ATTRS(15), 6309 THERMAL_ATTRS(0), 6310 THERMAL_ATTRS(1), 6311 THERMAL_ATTRS(2), 6312 THERMAL_ATTRS(3), 6313 THERMAL_ATTRS(4), 6314 THERMAL_ATTRS(5), 6315 THERMAL_ATTRS(6), 6316 THERMAL_ATTRS(7), 6317 NULL 6318 }; 6319 6320 static const struct attribute_group thermal_temp_input16_group = { 6321 .attrs = thermal_temp_input_attr 6322 }; 6323 6324 static const struct attribute_group thermal_temp_input8_group = { 6325 .attrs = &thermal_temp_input_attr[8] 6326 }; 6327 6328 #undef THERMAL_SENSOR_ATTR_TEMP 6329 #undef THERMAL_ATTRS 6330 6331 /* --------------------------------------------------------------------- */ 6332 6333 static int __init thermal_init(struct ibm_init_struct *iibm) 6334 { 6335 u8 t, ta1, ta2; 6336 int i; 6337 int acpi_tmp7; 6338 int res; 6339 6340 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6341 6342 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6343 6344 if (thinkpad_id.ec_model) { 6345 /* 6346 * Direct EC access mode: sensors at registers 6347 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6348 * non-implemented, thermal sensors return 0x80 when 6349 * not available 6350 */ 6351 6352 ta1 = ta2 = 0; 6353 for (i = 0; i < 8; i++) { 6354 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6355 ta1 |= t; 6356 } else { 6357 ta1 = 0; 6358 break; 6359 } 6360 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6361 ta2 |= t; 6362 } else { 6363 ta1 = 0; 6364 break; 6365 } 6366 } 6367 if (ta1 == 0) { 6368 /* This is sheer paranoia, but we handle it anyway */ 6369 if (acpi_tmp7) { 6370 pr_err("ThinkPad ACPI EC access misbehaving, " 6371 "falling back to ACPI TMPx access " 6372 "mode\n"); 6373 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6374 } else { 6375 pr_err("ThinkPad ACPI EC access misbehaving, " 6376 "disabling thermal sensors access\n"); 6377 thermal_read_mode = TPACPI_THERMAL_NONE; 6378 } 6379 } else { 6380 thermal_read_mode = 6381 (ta2 != 0) ? 6382 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6383 } 6384 } else if (acpi_tmp7) { 6385 if (tpacpi_is_ibm() && 6386 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6387 /* 600e/x, 770e, 770x */ 6388 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6389 } else { 6390 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6391 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6392 } 6393 } else { 6394 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6395 thermal_read_mode = TPACPI_THERMAL_NONE; 6396 } 6397 6398 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6399 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6400 thermal_read_mode); 6401 6402 switch (thermal_read_mode) { 6403 case TPACPI_THERMAL_TPEC_16: 6404 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 6405 &thermal_temp_input16_group); 6406 if (res) 6407 return res; 6408 break; 6409 case TPACPI_THERMAL_TPEC_8: 6410 case TPACPI_THERMAL_ACPI_TMP07: 6411 case TPACPI_THERMAL_ACPI_UPDT: 6412 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 6413 &thermal_temp_input8_group); 6414 if (res) 6415 return res; 6416 break; 6417 case TPACPI_THERMAL_NONE: 6418 default: 6419 return 1; 6420 } 6421 6422 return 0; 6423 } 6424 6425 static void thermal_exit(void) 6426 { 6427 switch (thermal_read_mode) { 6428 case TPACPI_THERMAL_TPEC_16: 6429 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 6430 &thermal_temp_input16_group); 6431 break; 6432 case TPACPI_THERMAL_TPEC_8: 6433 case TPACPI_THERMAL_ACPI_TMP07: 6434 case TPACPI_THERMAL_ACPI_UPDT: 6435 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 6436 &thermal_temp_input8_group); 6437 break; 6438 case TPACPI_THERMAL_NONE: 6439 default: 6440 break; 6441 } 6442 } 6443 6444 static int thermal_read(struct seq_file *m) 6445 { 6446 int n, i; 6447 struct ibm_thermal_sensors_struct t; 6448 6449 n = thermal_get_sensors(&t); 6450 if (unlikely(n < 0)) 6451 return n; 6452 6453 seq_printf(m, "temperatures:\t"); 6454 6455 if (n > 0) { 6456 for (i = 0; i < (n - 1); i++) 6457 seq_printf(m, "%d ", t.temp[i] / 1000); 6458 seq_printf(m, "%d\n", t.temp[i] / 1000); 6459 } else 6460 seq_printf(m, "not supported\n"); 6461 6462 return 0; 6463 } 6464 6465 static struct ibm_struct thermal_driver_data = { 6466 .name = "thermal", 6467 .read = thermal_read, 6468 .exit = thermal_exit, 6469 }; 6470 6471 /************************************************************************* 6472 * Backlight/brightness subdriver 6473 */ 6474 6475 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6476 6477 /* 6478 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6479 * CMOS NVRAM byte 0x5E, bits 0-3. 6480 * 6481 * EC HBRV (0x31) has the following layout 6482 * Bit 7: unknown function 6483 * Bit 6: unknown function 6484 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6485 * Bit 4: must be set to zero to avoid problems 6486 * Bit 3-0: backlight brightness level 6487 * 6488 * brightness_get_raw returns status data in the HBRV layout 6489 * 6490 * WARNING: The X61 has been verified to use HBRV for something else, so 6491 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6492 * testing on the very early *60 Lenovo models... 6493 */ 6494 6495 enum { 6496 TP_EC_BACKLIGHT = 0x31, 6497 6498 /* TP_EC_BACKLIGHT bitmasks */ 6499 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6500 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6501 TP_EC_BACKLIGHT_MAPSW = 0x20, 6502 }; 6503 6504 enum tpacpi_brightness_access_mode { 6505 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6506 TPACPI_BRGHT_MODE_EC, /* EC control */ 6507 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6508 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6509 TPACPI_BRGHT_MODE_MAX 6510 }; 6511 6512 static struct backlight_device *ibm_backlight_device; 6513 6514 static enum tpacpi_brightness_access_mode brightness_mode = 6515 TPACPI_BRGHT_MODE_MAX; 6516 6517 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6518 6519 static struct mutex brightness_mutex; 6520 6521 /* NVRAM brightness access, 6522 * call with brightness_mutex held! */ 6523 static unsigned int tpacpi_brightness_nvram_get(void) 6524 { 6525 u8 lnvram; 6526 6527 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6528 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6529 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6530 lnvram &= bright_maxlvl; 6531 6532 return lnvram; 6533 } 6534 6535 static void tpacpi_brightness_checkpoint_nvram(void) 6536 { 6537 u8 lec = 0; 6538 u8 b_nvram; 6539 6540 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6541 return; 6542 6543 vdbg_printk(TPACPI_DBG_BRGHT, 6544 "trying to checkpoint backlight level to NVRAM...\n"); 6545 6546 if (mutex_lock_killable(&brightness_mutex) < 0) 6547 return; 6548 6549 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6550 goto unlock; 6551 lec &= TP_EC_BACKLIGHT_LVLMSK; 6552 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6553 6554 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6555 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6556 /* NVRAM needs update */ 6557 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6558 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6559 b_nvram |= lec; 6560 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6561 dbg_printk(TPACPI_DBG_BRGHT, 6562 "updated NVRAM backlight level to %u (0x%02x)\n", 6563 (unsigned int) lec, (unsigned int) b_nvram); 6564 } else 6565 vdbg_printk(TPACPI_DBG_BRGHT, 6566 "NVRAM backlight level already is %u (0x%02x)\n", 6567 (unsigned int) lec, (unsigned int) b_nvram); 6568 6569 unlock: 6570 mutex_unlock(&brightness_mutex); 6571 } 6572 6573 6574 /* call with brightness_mutex held! */ 6575 static int tpacpi_brightness_get_raw(int *status) 6576 { 6577 u8 lec = 0; 6578 6579 switch (brightness_mode) { 6580 case TPACPI_BRGHT_MODE_UCMS_STEP: 6581 *status = tpacpi_brightness_nvram_get(); 6582 return 0; 6583 case TPACPI_BRGHT_MODE_EC: 6584 case TPACPI_BRGHT_MODE_ECNVRAM: 6585 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6586 return -EIO; 6587 *status = lec; 6588 return 0; 6589 default: 6590 return -ENXIO; 6591 } 6592 } 6593 6594 /* call with brightness_mutex held! */ 6595 /* do NOT call with illegal backlight level value */ 6596 static int tpacpi_brightness_set_ec(unsigned int value) 6597 { 6598 u8 lec = 0; 6599 6600 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6601 return -EIO; 6602 6603 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6604 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6605 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6606 return -EIO; 6607 6608 return 0; 6609 } 6610 6611 /* call with brightness_mutex held! */ 6612 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6613 { 6614 int cmos_cmd, inc; 6615 unsigned int current_value, i; 6616 6617 current_value = tpacpi_brightness_nvram_get(); 6618 6619 if (value == current_value) 6620 return 0; 6621 6622 cmos_cmd = (value > current_value) ? 6623 TP_CMOS_BRIGHTNESS_UP : 6624 TP_CMOS_BRIGHTNESS_DOWN; 6625 inc = (value > current_value) ? 1 : -1; 6626 6627 for (i = current_value; i != value; i += inc) 6628 if (issue_thinkpad_cmos_command(cmos_cmd)) 6629 return -EIO; 6630 6631 return 0; 6632 } 6633 6634 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6635 static int brightness_set(unsigned int value) 6636 { 6637 int res; 6638 6639 if (value > bright_maxlvl) 6640 return -EINVAL; 6641 6642 vdbg_printk(TPACPI_DBG_BRGHT, 6643 "set backlight level to %d\n", value); 6644 6645 res = mutex_lock_killable(&brightness_mutex); 6646 if (res < 0) 6647 return res; 6648 6649 switch (brightness_mode) { 6650 case TPACPI_BRGHT_MODE_EC: 6651 case TPACPI_BRGHT_MODE_ECNVRAM: 6652 res = tpacpi_brightness_set_ec(value); 6653 break; 6654 case TPACPI_BRGHT_MODE_UCMS_STEP: 6655 res = tpacpi_brightness_set_ucmsstep(value); 6656 break; 6657 default: 6658 res = -ENXIO; 6659 } 6660 6661 mutex_unlock(&brightness_mutex); 6662 return res; 6663 } 6664 6665 /* sysfs backlight class ----------------------------------------------- */ 6666 6667 static int brightness_update_status(struct backlight_device *bd) 6668 { 6669 unsigned int level = 6670 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6671 bd->props.power == FB_BLANK_UNBLANK) ? 6672 bd->props.brightness : 0; 6673 6674 dbg_printk(TPACPI_DBG_BRGHT, 6675 "backlight: attempt to set level to %d\n", 6676 level); 6677 6678 /* it is the backlight class's job (caller) to handle 6679 * EINTR and other errors properly */ 6680 return brightness_set(level); 6681 } 6682 6683 static int brightness_get(struct backlight_device *bd) 6684 { 6685 int status, res; 6686 6687 res = mutex_lock_killable(&brightness_mutex); 6688 if (res < 0) 6689 return 0; 6690 6691 res = tpacpi_brightness_get_raw(&status); 6692 6693 mutex_unlock(&brightness_mutex); 6694 6695 if (res < 0) 6696 return 0; 6697 6698 return status & TP_EC_BACKLIGHT_LVLMSK; 6699 } 6700 6701 static void tpacpi_brightness_notify_change(void) 6702 { 6703 backlight_force_update(ibm_backlight_device, 6704 BACKLIGHT_UPDATE_HOTKEY); 6705 } 6706 6707 static const struct backlight_ops ibm_backlight_data = { 6708 .get_brightness = brightness_get, 6709 .update_status = brightness_update_status, 6710 }; 6711 6712 /* --------------------------------------------------------------------- */ 6713 6714 /* 6715 * Call _BCL method of video device. On some ThinkPads this will 6716 * switch the firmware to the ACPI brightness control mode. 6717 */ 6718 6719 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6720 { 6721 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6722 union acpi_object *obj; 6723 struct acpi_device *device, *child; 6724 int rc; 6725 6726 if (acpi_bus_get_device(handle, &device)) 6727 return 0; 6728 6729 rc = 0; 6730 list_for_each_entry(child, &device->children, node) { 6731 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6732 NULL, &buffer); 6733 if (ACPI_FAILURE(status)) 6734 continue; 6735 6736 obj = (union acpi_object *)buffer.pointer; 6737 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6738 pr_err("Unknown _BCL data, please report this to %s\n", 6739 TPACPI_MAIL); 6740 rc = 0; 6741 } else { 6742 rc = obj->package.count; 6743 } 6744 break; 6745 } 6746 6747 kfree(buffer.pointer); 6748 return rc; 6749 } 6750 6751 6752 /* 6753 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6754 */ 6755 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6756 { 6757 acpi_handle video_device; 6758 int bcl_levels = 0; 6759 6760 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6761 if (video_device) 6762 bcl_levels = tpacpi_query_bcl_levels(video_device); 6763 6764 tp_features.bright_acpimode = (bcl_levels > 0); 6765 6766 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6767 } 6768 6769 /* 6770 * These are only useful for models that have only one possibility 6771 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6772 * these quirks. 6773 */ 6774 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6775 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6776 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6777 6778 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6779 /* Models with ATI GPUs known to require ECNVRAM mode */ 6780 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6781 6782 /* Models with ATI GPUs that can use ECNVRAM */ 6783 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6784 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6785 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6786 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6787 6788 /* Models with Intel Extreme Graphics 2 */ 6789 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6790 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6791 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6792 6793 /* Models with Intel GMA900 */ 6794 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6795 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6796 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6797 }; 6798 6799 /* 6800 * Returns < 0 for error, otherwise sets tp_features.bright_* 6801 * and bright_maxlvl. 6802 */ 6803 static void __init tpacpi_detect_brightness_capabilities(void) 6804 { 6805 unsigned int b; 6806 6807 vdbg_printk(TPACPI_DBG_INIT, 6808 "detecting firmware brightness interface capabilities\n"); 6809 6810 /* we could run a quirks check here (same table used by 6811 * brightness_init) if needed */ 6812 6813 /* 6814 * We always attempt to detect acpi support, so as to switch 6815 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6816 * going to publish a backlight interface 6817 */ 6818 b = tpacpi_check_std_acpi_brightness_support(); 6819 switch (b) { 6820 case 16: 6821 bright_maxlvl = 15; 6822 break; 6823 case 8: 6824 case 0: 6825 bright_maxlvl = 7; 6826 break; 6827 default: 6828 tp_features.bright_unkfw = 1; 6829 bright_maxlvl = b - 1; 6830 } 6831 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6832 } 6833 6834 static int __init brightness_init(struct ibm_init_struct *iibm) 6835 { 6836 struct backlight_properties props; 6837 int b; 6838 unsigned long quirks; 6839 6840 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6841 6842 mutex_init(&brightness_mutex); 6843 6844 quirks = tpacpi_check_quirks(brightness_quirk_table, 6845 ARRAY_SIZE(brightness_quirk_table)); 6846 6847 /* tpacpi_detect_brightness_capabilities() must have run already */ 6848 6849 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6850 if (tp_features.bright_unkfw) 6851 return 1; 6852 6853 if (!brightness_enable) { 6854 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6855 "brightness support disabled by " 6856 "module parameter\n"); 6857 return 1; 6858 } 6859 6860 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6861 if (brightness_enable > 1) { 6862 pr_info("Standard ACPI backlight interface " 6863 "available, not loading native one\n"); 6864 return 1; 6865 } else if (brightness_enable == 1) { 6866 pr_warn("Cannot enable backlight brightness support, " 6867 "ACPI is already handling it. Refer to the " 6868 "acpi_backlight kernel parameter.\n"); 6869 return 1; 6870 } 6871 } else if (tp_features.bright_acpimode && brightness_enable > 1) { 6872 pr_notice("Standard ACPI backlight interface not " 6873 "available, thinkpad_acpi native " 6874 "brightness control enabled\n"); 6875 } 6876 6877 /* 6878 * Check for module parameter bogosity, note that we 6879 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6880 * able to detect "unspecified" 6881 */ 6882 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6883 return -EINVAL; 6884 6885 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6886 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6887 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6888 if (quirks & TPACPI_BRGHT_Q_EC) 6889 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6890 else 6891 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6892 6893 dbg_printk(TPACPI_DBG_BRGHT, 6894 "driver auto-selected brightness_mode=%d\n", 6895 brightness_mode); 6896 } 6897 6898 /* Safety */ 6899 if (!tpacpi_is_ibm() && 6900 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6901 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6902 return -EINVAL; 6903 6904 if (tpacpi_brightness_get_raw(&b) < 0) 6905 return 1; 6906 6907 memset(&props, 0, sizeof(struct backlight_properties)); 6908 props.type = BACKLIGHT_PLATFORM; 6909 props.max_brightness = bright_maxlvl; 6910 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6911 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6912 NULL, NULL, 6913 &ibm_backlight_data, 6914 &props); 6915 if (IS_ERR(ibm_backlight_device)) { 6916 int rc = PTR_ERR(ibm_backlight_device); 6917 ibm_backlight_device = NULL; 6918 pr_err("Could not register backlight device\n"); 6919 return rc; 6920 } 6921 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6922 "brightness is supported\n"); 6923 6924 if (quirks & TPACPI_BRGHT_Q_ASK) { 6925 pr_notice("brightness: will use unverified default: " 6926 "brightness_mode=%d\n", brightness_mode); 6927 pr_notice("brightness: please report to %s whether it works well " 6928 "or not on your ThinkPad\n", TPACPI_MAIL); 6929 } 6930 6931 /* Added by mistake in early 2007. Probably useless, but it could 6932 * be working around some unknown firmware problem where the value 6933 * read at startup doesn't match the real hardware state... so leave 6934 * it in place just in case */ 6935 backlight_update_status(ibm_backlight_device); 6936 6937 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6938 "brightness: registering brightness hotkeys " 6939 "as change notification\n"); 6940 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6941 | TP_ACPI_HKEY_BRGHTUP_MASK 6942 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6943 return 0; 6944 } 6945 6946 static void brightness_suspend(void) 6947 { 6948 tpacpi_brightness_checkpoint_nvram(); 6949 } 6950 6951 static void brightness_shutdown(void) 6952 { 6953 tpacpi_brightness_checkpoint_nvram(); 6954 } 6955 6956 static void brightness_exit(void) 6957 { 6958 if (ibm_backlight_device) { 6959 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6960 "calling backlight_device_unregister()\n"); 6961 backlight_device_unregister(ibm_backlight_device); 6962 } 6963 6964 tpacpi_brightness_checkpoint_nvram(); 6965 } 6966 6967 static int brightness_read(struct seq_file *m) 6968 { 6969 int level; 6970 6971 level = brightness_get(NULL); 6972 if (level < 0) { 6973 seq_printf(m, "level:\t\tunreadable\n"); 6974 } else { 6975 seq_printf(m, "level:\t\t%d\n", level); 6976 seq_printf(m, "commands:\tup, down\n"); 6977 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 6978 bright_maxlvl); 6979 } 6980 6981 return 0; 6982 } 6983 6984 static int brightness_write(char *buf) 6985 { 6986 int level; 6987 int rc; 6988 char *cmd; 6989 6990 level = brightness_get(NULL); 6991 if (level < 0) 6992 return level; 6993 6994 while ((cmd = next_cmd(&buf))) { 6995 if (strlencmp(cmd, "up") == 0) { 6996 if (level < bright_maxlvl) 6997 level++; 6998 } else if (strlencmp(cmd, "down") == 0) { 6999 if (level > 0) 7000 level--; 7001 } else if (sscanf(cmd, "level %d", &level) == 1 && 7002 level >= 0 && level <= bright_maxlvl) { 7003 /* new level set */ 7004 } else 7005 return -EINVAL; 7006 } 7007 7008 tpacpi_disclose_usertask("procfs brightness", 7009 "set level to %d\n", level); 7010 7011 /* 7012 * Now we know what the final level should be, so we try to set it. 7013 * Doing it this way makes the syscall restartable in case of EINTR 7014 */ 7015 rc = brightness_set(level); 7016 if (!rc && ibm_backlight_device) 7017 backlight_force_update(ibm_backlight_device, 7018 BACKLIGHT_UPDATE_SYSFS); 7019 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7020 } 7021 7022 static struct ibm_struct brightness_driver_data = { 7023 .name = "brightness", 7024 .read = brightness_read, 7025 .write = brightness_write, 7026 .exit = brightness_exit, 7027 .suspend = brightness_suspend, 7028 .shutdown = brightness_shutdown, 7029 }; 7030 7031 /************************************************************************* 7032 * Volume subdriver 7033 */ 7034 7035 /* 7036 * IBM ThinkPads have a simple volume controller with MUTE gating. 7037 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7038 * 7039 * Since the *61 series (and probably also the later *60 series), Lenovo 7040 * ThinkPads only implement the MUTE gate. 7041 * 7042 * EC register 0x30 7043 * Bit 6: MUTE (1 mutes sound) 7044 * Bit 3-0: Volume 7045 * Other bits should be zero as far as we know. 7046 * 7047 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7048 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7049 * such as bit 7 which is used to detect repeated presses of MUTE, 7050 * and we leave them unchanged. 7051 * 7052 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7053 * in response to user input. Unfortunately, this rarely works well. 7054 * The laptop changes the state of its internal MUTE gate and, on some 7055 * models, sends KEY_MUTE, causing any user code that responds to the 7056 * mute button to get confused. The hardware MUTE gate is also 7057 * unnecessary, since user code can handle the mute button without 7058 * kernel or EC help. 7059 * 7060 * To avoid confusing userspace, we simply disable all EC-based mute 7061 * and volume controls when possible. 7062 */ 7063 7064 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7065 7066 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7067 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7068 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7069 7070 #if SNDRV_CARDS <= 32 7071 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7072 #else 7073 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7074 #endif 7075 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7076 static char *alsa_id = "ThinkPadEC"; 7077 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7078 7079 struct tpacpi_alsa_data { 7080 struct snd_card *card; 7081 struct snd_ctl_elem_id *ctl_mute_id; 7082 struct snd_ctl_elem_id *ctl_vol_id; 7083 }; 7084 7085 static struct snd_card *alsa_card; 7086 7087 enum { 7088 TP_EC_AUDIO = 0x30, 7089 7090 /* TP_EC_AUDIO bits */ 7091 TP_EC_AUDIO_MUTESW = 6, 7092 7093 /* TP_EC_AUDIO bitmasks */ 7094 TP_EC_AUDIO_LVL_MSK = 0x0F, 7095 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7096 7097 /* Maximum volume */ 7098 TP_EC_VOLUME_MAX = 14, 7099 }; 7100 7101 enum tpacpi_volume_access_mode { 7102 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7103 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7104 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7105 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7106 TPACPI_VOL_MODE_MAX 7107 }; 7108 7109 enum tpacpi_volume_capabilities { 7110 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7111 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7112 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7113 TPACPI_VOL_CAP_MAX 7114 }; 7115 7116 enum tpacpi_mute_btn_mode { 7117 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7118 /* We don't know what mode 1 is. */ 7119 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7120 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7121 }; 7122 7123 static enum tpacpi_volume_access_mode volume_mode = 7124 TPACPI_VOL_MODE_MAX; 7125 7126 static enum tpacpi_volume_capabilities volume_capabilities; 7127 static bool volume_control_allowed; 7128 static bool software_mute_requested = true; 7129 static bool software_mute_active; 7130 static int software_mute_orig_mode; 7131 7132 /* 7133 * Used to syncronize writers to TP_EC_AUDIO and 7134 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7135 */ 7136 static struct mutex volume_mutex; 7137 7138 static void tpacpi_volume_checkpoint_nvram(void) 7139 { 7140 u8 lec = 0; 7141 u8 b_nvram; 7142 u8 ec_mask; 7143 7144 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7145 return; 7146 if (!volume_control_allowed) 7147 return; 7148 if (software_mute_active) 7149 return; 7150 7151 vdbg_printk(TPACPI_DBG_MIXER, 7152 "trying to checkpoint mixer state to NVRAM...\n"); 7153 7154 if (tp_features.mixer_no_level_control) 7155 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7156 else 7157 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7158 7159 if (mutex_lock_killable(&volume_mutex) < 0) 7160 return; 7161 7162 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7163 goto unlock; 7164 lec &= ec_mask; 7165 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7166 7167 if (lec != (b_nvram & ec_mask)) { 7168 /* NVRAM needs update */ 7169 b_nvram &= ~ec_mask; 7170 b_nvram |= lec; 7171 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7172 dbg_printk(TPACPI_DBG_MIXER, 7173 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7174 (unsigned int) lec, (unsigned int) b_nvram); 7175 } else { 7176 vdbg_printk(TPACPI_DBG_MIXER, 7177 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7178 (unsigned int) lec, (unsigned int) b_nvram); 7179 } 7180 7181 unlock: 7182 mutex_unlock(&volume_mutex); 7183 } 7184 7185 static int volume_get_status_ec(u8 *status) 7186 { 7187 u8 s; 7188 7189 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7190 return -EIO; 7191 7192 *status = s; 7193 7194 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7195 7196 return 0; 7197 } 7198 7199 static int volume_get_status(u8 *status) 7200 { 7201 return volume_get_status_ec(status); 7202 } 7203 7204 static int volume_set_status_ec(const u8 status) 7205 { 7206 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7207 return -EIO; 7208 7209 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7210 7211 /* 7212 * On X200s, and possibly on others, it can take a while for 7213 * reads to become correct. 7214 */ 7215 msleep(1); 7216 7217 return 0; 7218 } 7219 7220 static int volume_set_status(const u8 status) 7221 { 7222 return volume_set_status_ec(status); 7223 } 7224 7225 /* returns < 0 on error, 0 on no change, 1 on change */ 7226 static int __volume_set_mute_ec(const bool mute) 7227 { 7228 int rc; 7229 u8 s, n; 7230 7231 if (mutex_lock_killable(&volume_mutex) < 0) 7232 return -EINTR; 7233 7234 rc = volume_get_status_ec(&s); 7235 if (rc) 7236 goto unlock; 7237 7238 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7239 s & ~TP_EC_AUDIO_MUTESW_MSK; 7240 7241 if (n != s) { 7242 rc = volume_set_status_ec(n); 7243 if (!rc) 7244 rc = 1; 7245 } 7246 7247 unlock: 7248 mutex_unlock(&volume_mutex); 7249 return rc; 7250 } 7251 7252 static int volume_alsa_set_mute(const bool mute) 7253 { 7254 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7255 (mute) ? "" : "un"); 7256 return __volume_set_mute_ec(mute); 7257 } 7258 7259 static int volume_set_mute(const bool mute) 7260 { 7261 int rc; 7262 7263 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7264 (mute) ? "" : "un"); 7265 7266 rc = __volume_set_mute_ec(mute); 7267 return (rc < 0) ? rc : 0; 7268 } 7269 7270 /* returns < 0 on error, 0 on no change, 1 on change */ 7271 static int __volume_set_volume_ec(const u8 vol) 7272 { 7273 int rc; 7274 u8 s, n; 7275 7276 if (vol > TP_EC_VOLUME_MAX) 7277 return -EINVAL; 7278 7279 if (mutex_lock_killable(&volume_mutex) < 0) 7280 return -EINTR; 7281 7282 rc = volume_get_status_ec(&s); 7283 if (rc) 7284 goto unlock; 7285 7286 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7287 7288 if (n != s) { 7289 rc = volume_set_status_ec(n); 7290 if (!rc) 7291 rc = 1; 7292 } 7293 7294 unlock: 7295 mutex_unlock(&volume_mutex); 7296 return rc; 7297 } 7298 7299 static int volume_set_software_mute(bool startup) 7300 { 7301 int result; 7302 7303 if (!tpacpi_is_lenovo()) 7304 return -ENODEV; 7305 7306 if (startup) { 7307 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7308 "HAUM", "qd")) 7309 return -EIO; 7310 7311 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7312 "Initial HAUM setting was %d\n", 7313 software_mute_orig_mode); 7314 } 7315 7316 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7317 (int)TP_EC_MUTE_BTN_NONE)) 7318 return -EIO; 7319 7320 if (result != TP_EC_MUTE_BTN_NONE) 7321 pr_warn("Unexpected SAUM result %d\n", 7322 result); 7323 7324 /* 7325 * In software mute mode, the standard codec controls take 7326 * precendence, so we unmute the ThinkPad HW switch at 7327 * startup. Just on case there are SAUM-capable ThinkPads 7328 * with level controls, set max HW volume as well. 7329 */ 7330 if (tp_features.mixer_no_level_control) 7331 result = volume_set_mute(false); 7332 else 7333 result = volume_set_status(TP_EC_VOLUME_MAX); 7334 7335 if (result != 0) 7336 pr_warn("Failed to unmute the HW mute switch\n"); 7337 7338 return 0; 7339 } 7340 7341 static void volume_exit_software_mute(void) 7342 { 7343 int r; 7344 7345 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7346 || r != software_mute_orig_mode) 7347 pr_warn("Failed to restore mute mode\n"); 7348 } 7349 7350 static int volume_alsa_set_volume(const u8 vol) 7351 { 7352 dbg_printk(TPACPI_DBG_MIXER, 7353 "ALSA: trying to set volume level to %hu\n", vol); 7354 return __volume_set_volume_ec(vol); 7355 } 7356 7357 static void volume_alsa_notify_change(void) 7358 { 7359 struct tpacpi_alsa_data *d; 7360 7361 if (alsa_card && alsa_card->private_data) { 7362 d = alsa_card->private_data; 7363 if (d->ctl_mute_id) 7364 snd_ctl_notify(alsa_card, 7365 SNDRV_CTL_EVENT_MASK_VALUE, 7366 d->ctl_mute_id); 7367 if (d->ctl_vol_id) 7368 snd_ctl_notify(alsa_card, 7369 SNDRV_CTL_EVENT_MASK_VALUE, 7370 d->ctl_vol_id); 7371 } 7372 } 7373 7374 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7375 struct snd_ctl_elem_info *uinfo) 7376 { 7377 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7378 uinfo->count = 1; 7379 uinfo->value.integer.min = 0; 7380 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7381 return 0; 7382 } 7383 7384 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7385 struct snd_ctl_elem_value *ucontrol) 7386 { 7387 u8 s; 7388 int rc; 7389 7390 rc = volume_get_status(&s); 7391 if (rc < 0) 7392 return rc; 7393 7394 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7395 return 0; 7396 } 7397 7398 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7399 struct snd_ctl_elem_value *ucontrol) 7400 { 7401 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7402 ucontrol->value.integer.value[0]); 7403 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7404 } 7405 7406 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7407 7408 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7409 struct snd_ctl_elem_value *ucontrol) 7410 { 7411 u8 s; 7412 int rc; 7413 7414 rc = volume_get_status(&s); 7415 if (rc < 0) 7416 return rc; 7417 7418 ucontrol->value.integer.value[0] = 7419 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7420 return 0; 7421 } 7422 7423 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7424 struct snd_ctl_elem_value *ucontrol) 7425 { 7426 tpacpi_disclose_usertask("ALSA", "%smute\n", 7427 ucontrol->value.integer.value[0] ? 7428 "un" : ""); 7429 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7430 } 7431 7432 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7433 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7434 .name = "Console Playback Volume", 7435 .index = 0, 7436 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7437 .info = volume_alsa_vol_info, 7438 .get = volume_alsa_vol_get, 7439 }; 7440 7441 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7442 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7443 .name = "Console Playback Switch", 7444 .index = 0, 7445 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7446 .info = volume_alsa_mute_info, 7447 .get = volume_alsa_mute_get, 7448 }; 7449 7450 static void volume_suspend(void) 7451 { 7452 tpacpi_volume_checkpoint_nvram(); 7453 } 7454 7455 static void volume_resume(void) 7456 { 7457 if (software_mute_active) { 7458 if (volume_set_software_mute(false) < 0) 7459 pr_warn("Failed to restore software mute\n"); 7460 } else { 7461 volume_alsa_notify_change(); 7462 } 7463 } 7464 7465 static void volume_shutdown(void) 7466 { 7467 tpacpi_volume_checkpoint_nvram(); 7468 } 7469 7470 static void volume_exit(void) 7471 { 7472 if (alsa_card) { 7473 snd_card_free(alsa_card); 7474 alsa_card = NULL; 7475 } 7476 7477 tpacpi_volume_checkpoint_nvram(); 7478 7479 if (software_mute_active) 7480 volume_exit_software_mute(); 7481 } 7482 7483 static int __init volume_create_alsa_mixer(void) 7484 { 7485 struct snd_card *card; 7486 struct tpacpi_alsa_data *data; 7487 struct snd_kcontrol *ctl_vol; 7488 struct snd_kcontrol *ctl_mute; 7489 int rc; 7490 7491 rc = snd_card_new(&tpacpi_pdev->dev, 7492 alsa_index, alsa_id, THIS_MODULE, 7493 sizeof(struct tpacpi_alsa_data), &card); 7494 if (rc < 0 || !card) { 7495 pr_err("Failed to create ALSA card structures: %d\n", rc); 7496 return 1; 7497 } 7498 7499 BUG_ON(!card->private_data); 7500 data = card->private_data; 7501 data->card = card; 7502 7503 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7504 sizeof(card->driver)); 7505 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7506 sizeof(card->shortname)); 7507 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7508 (thinkpad_id.ec_version_str) ? 7509 thinkpad_id.ec_version_str : "(unknown)"); 7510 snprintf(card->longname, sizeof(card->longname), 7511 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7512 (thinkpad_id.ec_version_str) ? 7513 thinkpad_id.ec_version_str : "unknown"); 7514 7515 if (volume_control_allowed) { 7516 volume_alsa_control_vol.put = volume_alsa_vol_put; 7517 volume_alsa_control_vol.access = 7518 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7519 7520 volume_alsa_control_mute.put = volume_alsa_mute_put; 7521 volume_alsa_control_mute.access = 7522 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7523 } 7524 7525 if (!tp_features.mixer_no_level_control) { 7526 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7527 rc = snd_ctl_add(card, ctl_vol); 7528 if (rc < 0) { 7529 pr_err("Failed to create ALSA volume control: %d\n", 7530 rc); 7531 goto err_exit; 7532 } 7533 data->ctl_vol_id = &ctl_vol->id; 7534 } 7535 7536 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7537 rc = snd_ctl_add(card, ctl_mute); 7538 if (rc < 0) { 7539 pr_err("Failed to create ALSA mute control: %d\n", rc); 7540 goto err_exit; 7541 } 7542 data->ctl_mute_id = &ctl_mute->id; 7543 7544 rc = snd_card_register(card); 7545 if (rc < 0) { 7546 pr_err("Failed to register ALSA card: %d\n", rc); 7547 goto err_exit; 7548 } 7549 7550 alsa_card = card; 7551 return 0; 7552 7553 err_exit: 7554 snd_card_free(card); 7555 return 1; 7556 } 7557 7558 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7559 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7560 7561 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7562 /* Whitelist volume level on all IBM by default */ 7563 { .vendor = PCI_VENDOR_ID_IBM, 7564 .bios = TPACPI_MATCH_ANY, 7565 .ec = TPACPI_MATCH_ANY, 7566 .quirks = TPACPI_VOL_Q_LEVEL }, 7567 7568 /* Lenovo models with volume control (needs confirmation) */ 7569 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7570 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7571 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7572 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7573 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7574 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7575 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7576 7577 /* Whitelist mute-only on all Lenovo by default */ 7578 { .vendor = PCI_VENDOR_ID_LENOVO, 7579 .bios = TPACPI_MATCH_ANY, 7580 .ec = TPACPI_MATCH_ANY, 7581 .quirks = TPACPI_VOL_Q_MUTEONLY } 7582 }; 7583 7584 static int __init volume_init(struct ibm_init_struct *iibm) 7585 { 7586 unsigned long quirks; 7587 int rc; 7588 7589 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7590 7591 mutex_init(&volume_mutex); 7592 7593 /* 7594 * Check for module parameter bogosity, note that we 7595 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7596 * able to detect "unspecified" 7597 */ 7598 if (volume_mode > TPACPI_VOL_MODE_MAX) 7599 return -EINVAL; 7600 7601 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7602 pr_err("UCMS step volume mode not implemented, " 7603 "please contact %s\n", TPACPI_MAIL); 7604 return 1; 7605 } 7606 7607 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7608 return -EINVAL; 7609 7610 /* 7611 * The ALSA mixer is our primary interface. 7612 * When disabled, don't install the subdriver at all 7613 */ 7614 if (!alsa_enable) { 7615 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7616 "ALSA mixer disabled by parameter, " 7617 "not loading volume subdriver...\n"); 7618 return 1; 7619 } 7620 7621 quirks = tpacpi_check_quirks(volume_quirk_table, 7622 ARRAY_SIZE(volume_quirk_table)); 7623 7624 switch (volume_capabilities) { 7625 case TPACPI_VOL_CAP_AUTO: 7626 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7627 tp_features.mixer_no_level_control = 1; 7628 else if (quirks & TPACPI_VOL_Q_LEVEL) 7629 tp_features.mixer_no_level_control = 0; 7630 else 7631 return 1; /* no mixer */ 7632 break; 7633 case TPACPI_VOL_CAP_VOLMUTE: 7634 tp_features.mixer_no_level_control = 0; 7635 break; 7636 case TPACPI_VOL_CAP_MUTEONLY: 7637 tp_features.mixer_no_level_control = 1; 7638 break; 7639 default: 7640 return 1; 7641 } 7642 7643 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7644 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7645 "using user-supplied volume_capabilities=%d\n", 7646 volume_capabilities); 7647 7648 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7649 volume_mode == TPACPI_VOL_MODE_MAX) { 7650 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7651 7652 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7653 "driver auto-selected volume_mode=%d\n", 7654 volume_mode); 7655 } else { 7656 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7657 "using user-supplied volume_mode=%d\n", 7658 volume_mode); 7659 } 7660 7661 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7662 "mute is supported, volume control is %s\n", 7663 str_supported(!tp_features.mixer_no_level_control)); 7664 7665 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7666 software_mute_active = true; 7667 } else { 7668 rc = volume_create_alsa_mixer(); 7669 if (rc) { 7670 pr_err("Could not create the ALSA mixer interface\n"); 7671 return rc; 7672 } 7673 7674 pr_info("Console audio control enabled, mode: %s\n", 7675 (volume_control_allowed) ? 7676 "override (read/write)" : 7677 "monitor (read only)"); 7678 } 7679 7680 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7681 "registering volume hotkeys as change notification\n"); 7682 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7683 | TP_ACPI_HKEY_VOLUP_MASK 7684 | TP_ACPI_HKEY_VOLDWN_MASK 7685 | TP_ACPI_HKEY_MUTE_MASK); 7686 7687 return 0; 7688 } 7689 7690 static int volume_read(struct seq_file *m) 7691 { 7692 u8 status; 7693 7694 if (volume_get_status(&status) < 0) { 7695 seq_printf(m, "level:\t\tunreadable\n"); 7696 } else { 7697 if (tp_features.mixer_no_level_control) 7698 seq_printf(m, "level:\t\tunsupported\n"); 7699 else 7700 seq_printf(m, "level:\t\t%d\n", 7701 status & TP_EC_AUDIO_LVL_MSK); 7702 7703 seq_printf(m, "mute:\t\t%s\n", 7704 onoff(status, TP_EC_AUDIO_MUTESW)); 7705 7706 if (volume_control_allowed) { 7707 seq_printf(m, "commands:\tunmute, mute\n"); 7708 if (!tp_features.mixer_no_level_control) { 7709 seq_printf(m, 7710 "commands:\tup, down\n"); 7711 seq_printf(m, 7712 "commands:\tlevel <level>" 7713 " (<level> is 0-%d)\n", 7714 TP_EC_VOLUME_MAX); 7715 } 7716 } 7717 } 7718 7719 return 0; 7720 } 7721 7722 static int volume_write(char *buf) 7723 { 7724 u8 s; 7725 u8 new_level, new_mute; 7726 int l; 7727 char *cmd; 7728 int rc; 7729 7730 /* 7731 * We do allow volume control at driver startup, so that the 7732 * user can set initial state through the volume=... parameter hack. 7733 */ 7734 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7735 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7736 tp_warned.volume_ctrl_forbidden = 1; 7737 pr_notice("Console audio control in monitor mode, " 7738 "changes are not allowed\n"); 7739 pr_notice("Use the volume_control=1 module parameter " 7740 "to enable volume control\n"); 7741 } 7742 return -EPERM; 7743 } 7744 7745 rc = volume_get_status(&s); 7746 if (rc < 0) 7747 return rc; 7748 7749 new_level = s & TP_EC_AUDIO_LVL_MSK; 7750 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7751 7752 while ((cmd = next_cmd(&buf))) { 7753 if (!tp_features.mixer_no_level_control) { 7754 if (strlencmp(cmd, "up") == 0) { 7755 if (new_mute) 7756 new_mute = 0; 7757 else if (new_level < TP_EC_VOLUME_MAX) 7758 new_level++; 7759 continue; 7760 } else if (strlencmp(cmd, "down") == 0) { 7761 if (new_mute) 7762 new_mute = 0; 7763 else if (new_level > 0) 7764 new_level--; 7765 continue; 7766 } else if (sscanf(cmd, "level %u", &l) == 1 && 7767 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7768 new_level = l; 7769 continue; 7770 } 7771 } 7772 if (strlencmp(cmd, "mute") == 0) 7773 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7774 else if (strlencmp(cmd, "unmute") == 0) 7775 new_mute = 0; 7776 else 7777 return -EINVAL; 7778 } 7779 7780 if (tp_features.mixer_no_level_control) { 7781 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7782 new_mute ? "" : "un"); 7783 rc = volume_set_mute(!!new_mute); 7784 } else { 7785 tpacpi_disclose_usertask("procfs volume", 7786 "%smute and set level to %d\n", 7787 new_mute ? "" : "un", new_level); 7788 rc = volume_set_status(new_mute | new_level); 7789 } 7790 volume_alsa_notify_change(); 7791 7792 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7793 } 7794 7795 static struct ibm_struct volume_driver_data = { 7796 .name = "volume", 7797 .read = volume_read, 7798 .write = volume_write, 7799 .exit = volume_exit, 7800 .suspend = volume_suspend, 7801 .resume = volume_resume, 7802 .shutdown = volume_shutdown, 7803 }; 7804 7805 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7806 7807 #define alsa_card NULL 7808 7809 static inline void volume_alsa_notify_change(void) 7810 { 7811 } 7812 7813 static int __init volume_init(struct ibm_init_struct *iibm) 7814 { 7815 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7816 7817 return 1; 7818 } 7819 7820 static struct ibm_struct volume_driver_data = { 7821 .name = "volume", 7822 }; 7823 7824 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7825 7826 /************************************************************************* 7827 * Fan subdriver 7828 */ 7829 7830 /* 7831 * FAN ACCESS MODES 7832 * 7833 * TPACPI_FAN_RD_ACPI_GFAN: 7834 * ACPI GFAN method: returns fan level 7835 * 7836 * see TPACPI_FAN_WR_ACPI_SFAN 7837 * EC 0x2f (HFSP) not available if GFAN exists 7838 * 7839 * TPACPI_FAN_WR_ACPI_SFAN: 7840 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7841 * 7842 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7843 * it for writing. 7844 * 7845 * TPACPI_FAN_WR_TPEC: 7846 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7847 * Supported on almost all ThinkPads 7848 * 7849 * Fan speed changes of any sort (including those caused by the 7850 * disengaged mode) are usually done slowly by the firmware as the 7851 * maximum amount of fan duty cycle change per second seems to be 7852 * limited. 7853 * 7854 * Reading is not available if GFAN exists. 7855 * Writing is not available if SFAN exists. 7856 * 7857 * Bits 7858 * 7 automatic mode engaged; 7859 * (default operation mode of the ThinkPad) 7860 * fan level is ignored in this mode. 7861 * 6 full speed mode (takes precedence over bit 7); 7862 * not available on all thinkpads. May disable 7863 * the tachometer while the fan controller ramps up 7864 * the speed (which can take up to a few *minutes*). 7865 * Speeds up fan to 100% duty-cycle, which is far above 7866 * the standard RPM levels. It is not impossible that 7867 * it could cause hardware damage. 7868 * 5-3 unused in some models. Extra bits for fan level 7869 * in others, but still useless as all values above 7870 * 7 map to the same speed as level 7 in these models. 7871 * 2-0 fan level (0..7 usually) 7872 * 0x00 = stop 7873 * 0x07 = max (set when temperatures critical) 7874 * Some ThinkPads may have other levels, see 7875 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7876 * 7877 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7878 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7879 * does so, its initial value is meaningless (0x07). 7880 * 7881 * For firmware bugs, refer to: 7882 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7883 * 7884 * ---- 7885 * 7886 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7887 * Main fan tachometer reading (in RPM) 7888 * 7889 * This register is present on all ThinkPads with a new-style EC, and 7890 * it is known not to be present on the A21m/e, and T22, as there is 7891 * something else in offset 0x84 according to the ACPI DSDT. Other 7892 * ThinkPads from this same time period (and earlier) probably lack the 7893 * tachometer as well. 7894 * 7895 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7896 * was never fixed by IBM to report the EC firmware version string 7897 * probably support the tachometer (like the early X models), so 7898 * detecting it is quite hard. We need more data to know for sure. 7899 * 7900 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7901 * might result. 7902 * 7903 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7904 * mode. 7905 * 7906 * For firmware bugs, refer to: 7907 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7908 * 7909 * ---- 7910 * 7911 * ThinkPad EC register 0x31 bit 0 (only on select models) 7912 * 7913 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7914 * show the speed of the main fan. When bit 0 of EC register 0x31 7915 * is one, the tachometer registers show the speed of the auxiliary 7916 * fan. 7917 * 7918 * Fan control seems to affect both fans, regardless of the state 7919 * of this bit. 7920 * 7921 * So far, only the firmware for the X60/X61 non-tablet versions 7922 * seem to support this (firmware TP-7M). 7923 * 7924 * TPACPI_FAN_WR_ACPI_FANS: 7925 * ThinkPad X31, X40, X41. Not available in the X60. 7926 * 7927 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7928 * high speed. ACPI DSDT seems to map these three speeds to levels 7929 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7930 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7931 * 7932 * The speeds are stored on handles 7933 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7934 * 7935 * There are three default speed sets, accessible as handles: 7936 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7937 * 7938 * ACPI DSDT switches which set is in use depending on various 7939 * factors. 7940 * 7941 * TPACPI_FAN_WR_TPEC is also available and should be used to 7942 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7943 * but the ACPI tables just mention level 7. 7944 */ 7945 7946 enum { /* Fan control constants */ 7947 fan_status_offset = 0x2f, /* EC register 0x2f */ 7948 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7949 * 0x84 must be read before 0x85 */ 7950 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7951 bit 0 selects which fan is active */ 7952 7953 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7954 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7955 7956 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7957 }; 7958 7959 enum fan_status_access_mode { 7960 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7961 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7962 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7963 }; 7964 7965 enum fan_control_access_mode { 7966 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7967 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7968 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7969 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7970 }; 7971 7972 enum fan_control_commands { 7973 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 7974 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 7975 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 7976 * and also watchdog cmd */ 7977 }; 7978 7979 static bool fan_control_allowed; 7980 7981 static enum fan_status_access_mode fan_status_access_mode; 7982 static enum fan_control_access_mode fan_control_access_mode; 7983 static enum fan_control_commands fan_control_commands; 7984 7985 static u8 fan_control_initial_status; 7986 static u8 fan_control_desired_level; 7987 static u8 fan_control_resume_level; 7988 static int fan_watchdog_maxinterval; 7989 7990 static struct mutex fan_mutex; 7991 7992 static void fan_watchdog_fire(struct work_struct *ignored); 7993 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 7994 7995 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 7996 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 7997 "\\FSPD", /* 600e/x, 770e, 770x */ 7998 ); /* all others */ 7999 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8000 "JFNS", /* 770x-JL */ 8001 ); /* all others */ 8002 8003 /* 8004 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8005 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8006 * be in auto mode (0x80). 8007 * 8008 * This is corrected by any write to HFSP either by the driver, or 8009 * by the firmware. 8010 * 8011 * We assume 0x07 really means auto mode while this quirk is active, 8012 * as this is far more likely than the ThinkPad being in level 7, 8013 * which is only used by the firmware during thermal emergencies. 8014 * 8015 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8016 * TP-70 (T43, R52), which are known to be buggy. 8017 */ 8018 8019 static void fan_quirk1_setup(void) 8020 { 8021 if (fan_control_initial_status == 0x07) { 8022 pr_notice("fan_init: initial fan status is unknown, " 8023 "assuming it is in auto mode\n"); 8024 tp_features.fan_ctrl_status_undef = 1; 8025 } 8026 } 8027 8028 static void fan_quirk1_handle(u8 *fan_status) 8029 { 8030 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8031 if (*fan_status != fan_control_initial_status) { 8032 /* something changed the HFSP regisnter since 8033 * driver init time, so it is not undefined 8034 * anymore */ 8035 tp_features.fan_ctrl_status_undef = 0; 8036 } else { 8037 /* Return most likely status. In fact, it 8038 * might be the only possible status */ 8039 *fan_status = TP_EC_FAN_AUTO; 8040 } 8041 } 8042 } 8043 8044 /* Select main fan on X60/X61, NOOP on others */ 8045 static bool fan_select_fan1(void) 8046 { 8047 if (tp_features.second_fan) { 8048 u8 val; 8049 8050 if (ec_read(fan_select_offset, &val) < 0) 8051 return false; 8052 val &= 0xFEU; 8053 if (ec_write(fan_select_offset, val) < 0) 8054 return false; 8055 } 8056 return true; 8057 } 8058 8059 /* Select secondary fan on X60/X61 */ 8060 static bool fan_select_fan2(void) 8061 { 8062 u8 val; 8063 8064 if (!tp_features.second_fan) 8065 return false; 8066 8067 if (ec_read(fan_select_offset, &val) < 0) 8068 return false; 8069 val |= 0x01U; 8070 if (ec_write(fan_select_offset, val) < 0) 8071 return false; 8072 8073 return true; 8074 } 8075 8076 /* 8077 * Call with fan_mutex held 8078 */ 8079 static void fan_update_desired_level(u8 status) 8080 { 8081 if ((status & 8082 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8083 if (status > 7) 8084 fan_control_desired_level = 7; 8085 else 8086 fan_control_desired_level = status; 8087 } 8088 } 8089 8090 static int fan_get_status(u8 *status) 8091 { 8092 u8 s; 8093 8094 /* TODO: 8095 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8096 8097 switch (fan_status_access_mode) { 8098 case TPACPI_FAN_RD_ACPI_GFAN: { 8099 /* 570, 600e/x, 770e, 770x */ 8100 int res; 8101 8102 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8103 return -EIO; 8104 8105 if (likely(status)) 8106 *status = res & 0x07; 8107 8108 break; 8109 } 8110 case TPACPI_FAN_RD_TPEC: 8111 /* all except 570, 600e/x, 770e, 770x */ 8112 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8113 return -EIO; 8114 8115 if (likely(status)) { 8116 *status = s; 8117 fan_quirk1_handle(status); 8118 } 8119 8120 break; 8121 8122 default: 8123 return -ENXIO; 8124 } 8125 8126 return 0; 8127 } 8128 8129 static int fan_get_status_safe(u8 *status) 8130 { 8131 int rc; 8132 u8 s; 8133 8134 if (mutex_lock_killable(&fan_mutex)) 8135 return -ERESTARTSYS; 8136 rc = fan_get_status(&s); 8137 if (!rc) 8138 fan_update_desired_level(s); 8139 mutex_unlock(&fan_mutex); 8140 8141 if (rc) 8142 return rc; 8143 if (status) 8144 *status = s; 8145 8146 return 0; 8147 } 8148 8149 static int fan_get_speed(unsigned int *speed) 8150 { 8151 u8 hi, lo; 8152 8153 switch (fan_status_access_mode) { 8154 case TPACPI_FAN_RD_TPEC: 8155 /* all except 570, 600e/x, 770e, 770x */ 8156 if (unlikely(!fan_select_fan1())) 8157 return -EIO; 8158 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8159 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8160 return -EIO; 8161 8162 if (likely(speed)) 8163 *speed = (hi << 8) | lo; 8164 8165 break; 8166 8167 default: 8168 return -ENXIO; 8169 } 8170 8171 return 0; 8172 } 8173 8174 static int fan2_get_speed(unsigned int *speed) 8175 { 8176 u8 hi, lo; 8177 bool rc; 8178 8179 switch (fan_status_access_mode) { 8180 case TPACPI_FAN_RD_TPEC: 8181 /* all except 570, 600e/x, 770e, 770x */ 8182 if (unlikely(!fan_select_fan2())) 8183 return -EIO; 8184 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8185 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8186 fan_select_fan1(); /* play it safe */ 8187 if (rc) 8188 return -EIO; 8189 8190 if (likely(speed)) 8191 *speed = (hi << 8) | lo; 8192 8193 break; 8194 8195 default: 8196 return -ENXIO; 8197 } 8198 8199 return 0; 8200 } 8201 8202 static int fan_set_level(int level) 8203 { 8204 if (!fan_control_allowed) 8205 return -EPERM; 8206 8207 switch (fan_control_access_mode) { 8208 case TPACPI_FAN_WR_ACPI_SFAN: 8209 if (level >= 0 && level <= 7) { 8210 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8211 return -EIO; 8212 } else 8213 return -EINVAL; 8214 break; 8215 8216 case TPACPI_FAN_WR_ACPI_FANS: 8217 case TPACPI_FAN_WR_TPEC: 8218 if (!(level & TP_EC_FAN_AUTO) && 8219 !(level & TP_EC_FAN_FULLSPEED) && 8220 ((level < 0) || (level > 7))) 8221 return -EINVAL; 8222 8223 /* safety net should the EC not support AUTO 8224 * or FULLSPEED mode bits and just ignore them */ 8225 if (level & TP_EC_FAN_FULLSPEED) 8226 level |= 7; /* safety min speed 7 */ 8227 else if (level & TP_EC_FAN_AUTO) 8228 level |= 4; /* safety min speed 4 */ 8229 8230 if (!acpi_ec_write(fan_status_offset, level)) 8231 return -EIO; 8232 else 8233 tp_features.fan_ctrl_status_undef = 0; 8234 break; 8235 8236 default: 8237 return -ENXIO; 8238 } 8239 8240 vdbg_printk(TPACPI_DBG_FAN, 8241 "fan control: set fan control register to 0x%02x\n", level); 8242 return 0; 8243 } 8244 8245 static int fan_set_level_safe(int level) 8246 { 8247 int rc; 8248 8249 if (!fan_control_allowed) 8250 return -EPERM; 8251 8252 if (mutex_lock_killable(&fan_mutex)) 8253 return -ERESTARTSYS; 8254 8255 if (level == TPACPI_FAN_LAST_LEVEL) 8256 level = fan_control_desired_level; 8257 8258 rc = fan_set_level(level); 8259 if (!rc) 8260 fan_update_desired_level(level); 8261 8262 mutex_unlock(&fan_mutex); 8263 return rc; 8264 } 8265 8266 static int fan_set_enable(void) 8267 { 8268 u8 s; 8269 int rc; 8270 8271 if (!fan_control_allowed) 8272 return -EPERM; 8273 8274 if (mutex_lock_killable(&fan_mutex)) 8275 return -ERESTARTSYS; 8276 8277 switch (fan_control_access_mode) { 8278 case TPACPI_FAN_WR_ACPI_FANS: 8279 case TPACPI_FAN_WR_TPEC: 8280 rc = fan_get_status(&s); 8281 if (rc < 0) 8282 break; 8283 8284 /* Don't go out of emergency fan mode */ 8285 if (s != 7) { 8286 s &= 0x07; 8287 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8288 } 8289 8290 if (!acpi_ec_write(fan_status_offset, s)) 8291 rc = -EIO; 8292 else { 8293 tp_features.fan_ctrl_status_undef = 0; 8294 rc = 0; 8295 } 8296 break; 8297 8298 case TPACPI_FAN_WR_ACPI_SFAN: 8299 rc = fan_get_status(&s); 8300 if (rc < 0) 8301 break; 8302 8303 s &= 0x07; 8304 8305 /* Set fan to at least level 4 */ 8306 s |= 4; 8307 8308 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8309 rc = -EIO; 8310 else 8311 rc = 0; 8312 break; 8313 8314 default: 8315 rc = -ENXIO; 8316 } 8317 8318 mutex_unlock(&fan_mutex); 8319 8320 if (!rc) 8321 vdbg_printk(TPACPI_DBG_FAN, 8322 "fan control: set fan control register to 0x%02x\n", 8323 s); 8324 return rc; 8325 } 8326 8327 static int fan_set_disable(void) 8328 { 8329 int rc; 8330 8331 if (!fan_control_allowed) 8332 return -EPERM; 8333 8334 if (mutex_lock_killable(&fan_mutex)) 8335 return -ERESTARTSYS; 8336 8337 rc = 0; 8338 switch (fan_control_access_mode) { 8339 case TPACPI_FAN_WR_ACPI_FANS: 8340 case TPACPI_FAN_WR_TPEC: 8341 if (!acpi_ec_write(fan_status_offset, 0x00)) 8342 rc = -EIO; 8343 else { 8344 fan_control_desired_level = 0; 8345 tp_features.fan_ctrl_status_undef = 0; 8346 } 8347 break; 8348 8349 case TPACPI_FAN_WR_ACPI_SFAN: 8350 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8351 rc = -EIO; 8352 else 8353 fan_control_desired_level = 0; 8354 break; 8355 8356 default: 8357 rc = -ENXIO; 8358 } 8359 8360 if (!rc) 8361 vdbg_printk(TPACPI_DBG_FAN, 8362 "fan control: set fan control register to 0\n"); 8363 8364 mutex_unlock(&fan_mutex); 8365 return rc; 8366 } 8367 8368 static int fan_set_speed(int speed) 8369 { 8370 int rc; 8371 8372 if (!fan_control_allowed) 8373 return -EPERM; 8374 8375 if (mutex_lock_killable(&fan_mutex)) 8376 return -ERESTARTSYS; 8377 8378 rc = 0; 8379 switch (fan_control_access_mode) { 8380 case TPACPI_FAN_WR_ACPI_FANS: 8381 if (speed >= 0 && speed <= 65535) { 8382 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8383 speed, speed, speed)) 8384 rc = -EIO; 8385 } else 8386 rc = -EINVAL; 8387 break; 8388 8389 default: 8390 rc = -ENXIO; 8391 } 8392 8393 mutex_unlock(&fan_mutex); 8394 return rc; 8395 } 8396 8397 static void fan_watchdog_reset(void) 8398 { 8399 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8400 return; 8401 8402 if (fan_watchdog_maxinterval > 0 && 8403 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8404 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8405 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8406 else 8407 cancel_delayed_work(&fan_watchdog_task); 8408 } 8409 8410 static void fan_watchdog_fire(struct work_struct *ignored) 8411 { 8412 int rc; 8413 8414 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8415 return; 8416 8417 pr_notice("fan watchdog: enabling fan\n"); 8418 rc = fan_set_enable(); 8419 if (rc < 0) { 8420 pr_err("fan watchdog: error %d while enabling fan, " 8421 "will try again later...\n", -rc); 8422 /* reschedule for later */ 8423 fan_watchdog_reset(); 8424 } 8425 } 8426 8427 /* 8428 * SYSFS fan layout: hwmon compatible (device) 8429 * 8430 * pwm*_enable: 8431 * 0: "disengaged" mode 8432 * 1: manual mode 8433 * 2: native EC "auto" mode (recommended, hardware default) 8434 * 8435 * pwm*: set speed in manual mode, ignored otherwise. 8436 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8437 * interpolation. 8438 * 8439 * fan*_input: tachometer reading, RPM 8440 * 8441 * 8442 * SYSFS fan layout: extensions 8443 * 8444 * fan_watchdog (driver): 8445 * fan watchdog interval in seconds, 0 disables (default), max 120 8446 */ 8447 8448 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8449 static ssize_t fan_pwm1_enable_show(struct device *dev, 8450 struct device_attribute *attr, 8451 char *buf) 8452 { 8453 int res, mode; 8454 u8 status; 8455 8456 res = fan_get_status_safe(&status); 8457 if (res) 8458 return res; 8459 8460 if (status & TP_EC_FAN_FULLSPEED) { 8461 mode = 0; 8462 } else if (status & TP_EC_FAN_AUTO) { 8463 mode = 2; 8464 } else 8465 mode = 1; 8466 8467 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8468 } 8469 8470 static ssize_t fan_pwm1_enable_store(struct device *dev, 8471 struct device_attribute *attr, 8472 const char *buf, size_t count) 8473 { 8474 unsigned long t; 8475 int res, level; 8476 8477 if (parse_strtoul(buf, 2, &t)) 8478 return -EINVAL; 8479 8480 tpacpi_disclose_usertask("hwmon pwm1_enable", 8481 "set fan mode to %lu\n", t); 8482 8483 switch (t) { 8484 case 0: 8485 level = TP_EC_FAN_FULLSPEED; 8486 break; 8487 case 1: 8488 level = TPACPI_FAN_LAST_LEVEL; 8489 break; 8490 case 2: 8491 level = TP_EC_FAN_AUTO; 8492 break; 8493 case 3: 8494 /* reserved for software-controlled auto mode */ 8495 return -ENOSYS; 8496 default: 8497 return -EINVAL; 8498 } 8499 8500 res = fan_set_level_safe(level); 8501 if (res == -ENXIO) 8502 return -EINVAL; 8503 else if (res < 0) 8504 return res; 8505 8506 fan_watchdog_reset(); 8507 8508 return count; 8509 } 8510 8511 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8512 fan_pwm1_enable_show, fan_pwm1_enable_store); 8513 8514 /* sysfs fan pwm1 ------------------------------------------------------ */ 8515 static ssize_t fan_pwm1_show(struct device *dev, 8516 struct device_attribute *attr, 8517 char *buf) 8518 { 8519 int res; 8520 u8 status; 8521 8522 res = fan_get_status_safe(&status); 8523 if (res) 8524 return res; 8525 8526 if ((status & 8527 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8528 status = fan_control_desired_level; 8529 8530 if (status > 7) 8531 status = 7; 8532 8533 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8534 } 8535 8536 static ssize_t fan_pwm1_store(struct device *dev, 8537 struct device_attribute *attr, 8538 const char *buf, size_t count) 8539 { 8540 unsigned long s; 8541 int rc; 8542 u8 status, newlevel; 8543 8544 if (parse_strtoul(buf, 255, &s)) 8545 return -EINVAL; 8546 8547 tpacpi_disclose_usertask("hwmon pwm1", 8548 "set fan speed to %lu\n", s); 8549 8550 /* scale down from 0-255 to 0-7 */ 8551 newlevel = (s >> 5) & 0x07; 8552 8553 if (mutex_lock_killable(&fan_mutex)) 8554 return -ERESTARTSYS; 8555 8556 rc = fan_get_status(&status); 8557 if (!rc && (status & 8558 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8559 rc = fan_set_level(newlevel); 8560 if (rc == -ENXIO) 8561 rc = -EINVAL; 8562 else if (!rc) { 8563 fan_update_desired_level(newlevel); 8564 fan_watchdog_reset(); 8565 } 8566 } 8567 8568 mutex_unlock(&fan_mutex); 8569 return (rc) ? rc : count; 8570 } 8571 8572 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8573 8574 /* sysfs fan fan1_input ------------------------------------------------ */ 8575 static ssize_t fan_fan1_input_show(struct device *dev, 8576 struct device_attribute *attr, 8577 char *buf) 8578 { 8579 int res; 8580 unsigned int speed; 8581 8582 res = fan_get_speed(&speed); 8583 if (res < 0) 8584 return res; 8585 8586 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8587 } 8588 8589 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8590 8591 /* sysfs fan fan2_input ------------------------------------------------ */ 8592 static ssize_t fan_fan2_input_show(struct device *dev, 8593 struct device_attribute *attr, 8594 char *buf) 8595 { 8596 int res; 8597 unsigned int speed; 8598 8599 res = fan2_get_speed(&speed); 8600 if (res < 0) 8601 return res; 8602 8603 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8604 } 8605 8606 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8607 8608 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8609 static ssize_t fan_fan_watchdog_show(struct device_driver *drv, 8610 char *buf) 8611 { 8612 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8613 } 8614 8615 static ssize_t fan_fan_watchdog_store(struct device_driver *drv, 8616 const char *buf, size_t count) 8617 { 8618 unsigned long t; 8619 8620 if (parse_strtoul(buf, 120, &t)) 8621 return -EINVAL; 8622 8623 if (!fan_control_allowed) 8624 return -EPERM; 8625 8626 fan_watchdog_maxinterval = t; 8627 fan_watchdog_reset(); 8628 8629 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8630 8631 return count; 8632 } 8633 8634 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, 8635 fan_fan_watchdog_show, fan_fan_watchdog_store); 8636 8637 /* --------------------------------------------------------------------- */ 8638 static struct attribute *fan_attributes[] = { 8639 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8640 &dev_attr_fan1_input.attr, 8641 NULL, /* for fan2_input */ 8642 NULL 8643 }; 8644 8645 static const struct attribute_group fan_attr_group = { 8646 .attrs = fan_attributes, 8647 }; 8648 8649 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8650 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8651 8652 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \ 8653 { .vendor = PCI_VENDOR_ID_IBM, \ 8654 .bios = TPACPI_MATCH_ANY, \ 8655 .ec = TPID(__id1, __id2), \ 8656 .quirks = __quirks } 8657 8658 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \ 8659 { .vendor = PCI_VENDOR_ID_LENOVO, \ 8660 .bios = TPACPI_MATCH_ANY, \ 8661 .ec = TPID(__id1, __id2), \ 8662 .quirks = __quirks } 8663 8664 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8665 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), 8666 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), 8667 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), 8668 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), 8669 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), 8670 }; 8671 8672 #undef TPACPI_FAN_QL 8673 #undef TPACPI_FAN_QI 8674 8675 static int __init fan_init(struct ibm_init_struct *iibm) 8676 { 8677 int rc; 8678 unsigned long quirks; 8679 8680 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8681 "initializing fan subdriver\n"); 8682 8683 mutex_init(&fan_mutex); 8684 fan_status_access_mode = TPACPI_FAN_NONE; 8685 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8686 fan_control_commands = 0; 8687 fan_watchdog_maxinterval = 0; 8688 tp_features.fan_ctrl_status_undef = 0; 8689 tp_features.second_fan = 0; 8690 fan_control_desired_level = 7; 8691 8692 if (tpacpi_is_ibm()) { 8693 TPACPI_ACPIHANDLE_INIT(fans); 8694 TPACPI_ACPIHANDLE_INIT(gfan); 8695 TPACPI_ACPIHANDLE_INIT(sfan); 8696 } 8697 8698 quirks = tpacpi_check_quirks(fan_quirk_table, 8699 ARRAY_SIZE(fan_quirk_table)); 8700 8701 if (gfan_handle) { 8702 /* 570, 600e/x, 770e, 770x */ 8703 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8704 } else { 8705 /* all other ThinkPads: note that even old-style 8706 * ThinkPad ECs supports the fan control register */ 8707 if (likely(acpi_ec_read(fan_status_offset, 8708 &fan_control_initial_status))) { 8709 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8710 if (quirks & TPACPI_FAN_Q1) 8711 fan_quirk1_setup(); 8712 if (quirks & TPACPI_FAN_2FAN) { 8713 tp_features.second_fan = 1; 8714 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8715 "secondary fan support enabled\n"); 8716 } 8717 } else { 8718 pr_err("ThinkPad ACPI EC access misbehaving, " 8719 "fan status and control unavailable\n"); 8720 return 1; 8721 } 8722 } 8723 8724 if (sfan_handle) { 8725 /* 570, 770x-JL */ 8726 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8727 fan_control_commands |= 8728 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8729 } else { 8730 if (!gfan_handle) { 8731 /* gfan without sfan means no fan control */ 8732 /* all other models implement TP EC 0x2f control */ 8733 8734 if (fans_handle) { 8735 /* X31, X40, X41 */ 8736 fan_control_access_mode = 8737 TPACPI_FAN_WR_ACPI_FANS; 8738 fan_control_commands |= 8739 TPACPI_FAN_CMD_SPEED | 8740 TPACPI_FAN_CMD_LEVEL | 8741 TPACPI_FAN_CMD_ENABLE; 8742 } else { 8743 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8744 fan_control_commands |= 8745 TPACPI_FAN_CMD_LEVEL | 8746 TPACPI_FAN_CMD_ENABLE; 8747 } 8748 } 8749 } 8750 8751 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8752 "fan is %s, modes %d, %d\n", 8753 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8754 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8755 fan_status_access_mode, fan_control_access_mode); 8756 8757 /* fan control master switch */ 8758 if (!fan_control_allowed) { 8759 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8760 fan_control_commands = 0; 8761 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8762 "fan control features disabled by parameter\n"); 8763 } 8764 8765 /* update fan_control_desired_level */ 8766 if (fan_status_access_mode != TPACPI_FAN_NONE) 8767 fan_get_status_safe(NULL); 8768 8769 if (fan_status_access_mode != TPACPI_FAN_NONE || 8770 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8771 if (tp_features.second_fan) { 8772 /* attach second fan tachometer */ 8773 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8774 &dev_attr_fan2_input.attr; 8775 } 8776 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 8777 &fan_attr_group); 8778 if (rc < 0) 8779 return rc; 8780 8781 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8782 &driver_attr_fan_watchdog); 8783 if (rc < 0) { 8784 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 8785 &fan_attr_group); 8786 return rc; 8787 } 8788 return 0; 8789 } else 8790 return 1; 8791 } 8792 8793 static void fan_exit(void) 8794 { 8795 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8796 "cancelling any pending fan watchdog tasks\n"); 8797 8798 /* FIXME: can we really do this unconditionally? */ 8799 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); 8800 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8801 &driver_attr_fan_watchdog); 8802 8803 cancel_delayed_work(&fan_watchdog_task); 8804 flush_workqueue(tpacpi_wq); 8805 } 8806 8807 static void fan_suspend(void) 8808 { 8809 int rc; 8810 8811 if (!fan_control_allowed) 8812 return; 8813 8814 /* Store fan status in cache */ 8815 fan_control_resume_level = 0; 8816 rc = fan_get_status_safe(&fan_control_resume_level); 8817 if (rc < 0) 8818 pr_notice("failed to read fan level for later " 8819 "restore during resume: %d\n", rc); 8820 8821 /* if it is undefined, don't attempt to restore it. 8822 * KEEP THIS LAST */ 8823 if (tp_features.fan_ctrl_status_undef) 8824 fan_control_resume_level = 0; 8825 } 8826 8827 static void fan_resume(void) 8828 { 8829 u8 current_level = 7; 8830 bool do_set = false; 8831 int rc; 8832 8833 /* DSDT *always* updates status on resume */ 8834 tp_features.fan_ctrl_status_undef = 0; 8835 8836 if (!fan_control_allowed || 8837 !fan_control_resume_level || 8838 (fan_get_status_safe(¤t_level) < 0)) 8839 return; 8840 8841 switch (fan_control_access_mode) { 8842 case TPACPI_FAN_WR_ACPI_SFAN: 8843 /* never decrease fan level */ 8844 do_set = (fan_control_resume_level > current_level); 8845 break; 8846 case TPACPI_FAN_WR_ACPI_FANS: 8847 case TPACPI_FAN_WR_TPEC: 8848 /* never decrease fan level, scale is: 8849 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8850 * 8851 * We expect the firmware to set either 7 or AUTO, but we 8852 * handle FULLSPEED out of paranoia. 8853 * 8854 * So, we can safely only restore FULLSPEED or 7, anything 8855 * else could slow the fan. Restoring AUTO is useless, at 8856 * best that's exactly what the DSDT already set (it is the 8857 * slower it uses). 8858 * 8859 * Always keep in mind that the DSDT *will* have set the 8860 * fans to what the vendor supposes is the best level. We 8861 * muck with it only to speed the fan up. 8862 */ 8863 if (fan_control_resume_level != 7 && 8864 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8865 return; 8866 else 8867 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8868 (current_level != fan_control_resume_level); 8869 break; 8870 default: 8871 return; 8872 } 8873 if (do_set) { 8874 pr_notice("restoring fan level to 0x%02x\n", 8875 fan_control_resume_level); 8876 rc = fan_set_level_safe(fan_control_resume_level); 8877 if (rc < 0) 8878 pr_notice("failed to restore fan level: %d\n", rc); 8879 } 8880 } 8881 8882 static int fan_read(struct seq_file *m) 8883 { 8884 int rc; 8885 u8 status; 8886 unsigned int speed = 0; 8887 8888 switch (fan_status_access_mode) { 8889 case TPACPI_FAN_RD_ACPI_GFAN: 8890 /* 570, 600e/x, 770e, 770x */ 8891 rc = fan_get_status_safe(&status); 8892 if (rc < 0) 8893 return rc; 8894 8895 seq_printf(m, "status:\t\t%s\n" 8896 "level:\t\t%d\n", 8897 (status != 0) ? "enabled" : "disabled", status); 8898 break; 8899 8900 case TPACPI_FAN_RD_TPEC: 8901 /* all except 570, 600e/x, 770e, 770x */ 8902 rc = fan_get_status_safe(&status); 8903 if (rc < 0) 8904 return rc; 8905 8906 seq_printf(m, "status:\t\t%s\n", 8907 (status != 0) ? "enabled" : "disabled"); 8908 8909 rc = fan_get_speed(&speed); 8910 if (rc < 0) 8911 return rc; 8912 8913 seq_printf(m, "speed:\t\t%d\n", speed); 8914 8915 if (status & TP_EC_FAN_FULLSPEED) 8916 /* Disengaged mode takes precedence */ 8917 seq_printf(m, "level:\t\tdisengaged\n"); 8918 else if (status & TP_EC_FAN_AUTO) 8919 seq_printf(m, "level:\t\tauto\n"); 8920 else 8921 seq_printf(m, "level:\t\t%d\n", status); 8922 break; 8923 8924 case TPACPI_FAN_NONE: 8925 default: 8926 seq_printf(m, "status:\t\tnot supported\n"); 8927 } 8928 8929 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 8930 seq_printf(m, "commands:\tlevel <level>"); 8931 8932 switch (fan_control_access_mode) { 8933 case TPACPI_FAN_WR_ACPI_SFAN: 8934 seq_printf(m, " (<level> is 0-7)\n"); 8935 break; 8936 8937 default: 8938 seq_printf(m, " (<level> is 0-7, " 8939 "auto, disengaged, full-speed)\n"); 8940 break; 8941 } 8942 } 8943 8944 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 8945 seq_printf(m, "commands:\tenable, disable\n" 8946 "commands:\twatchdog <timeout> (<timeout> " 8947 "is 0 (off), 1-120 (seconds))\n"); 8948 8949 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 8950 seq_printf(m, "commands:\tspeed <speed>" 8951 " (<speed> is 0-65535)\n"); 8952 8953 return 0; 8954 } 8955 8956 static int fan_write_cmd_level(const char *cmd, int *rc) 8957 { 8958 int level; 8959 8960 if (strlencmp(cmd, "level auto") == 0) 8961 level = TP_EC_FAN_AUTO; 8962 else if ((strlencmp(cmd, "level disengaged") == 0) | 8963 (strlencmp(cmd, "level full-speed") == 0)) 8964 level = TP_EC_FAN_FULLSPEED; 8965 else if (sscanf(cmd, "level %d", &level) != 1) 8966 return 0; 8967 8968 *rc = fan_set_level_safe(level); 8969 if (*rc == -ENXIO) 8970 pr_err("level command accepted for unsupported access mode %d\n", 8971 fan_control_access_mode); 8972 else if (!*rc) 8973 tpacpi_disclose_usertask("procfs fan", 8974 "set level to %d\n", level); 8975 8976 return 1; 8977 } 8978 8979 static int fan_write_cmd_enable(const char *cmd, int *rc) 8980 { 8981 if (strlencmp(cmd, "enable") != 0) 8982 return 0; 8983 8984 *rc = fan_set_enable(); 8985 if (*rc == -ENXIO) 8986 pr_err("enable command accepted for unsupported access mode %d\n", 8987 fan_control_access_mode); 8988 else if (!*rc) 8989 tpacpi_disclose_usertask("procfs fan", "enable\n"); 8990 8991 return 1; 8992 } 8993 8994 static int fan_write_cmd_disable(const char *cmd, int *rc) 8995 { 8996 if (strlencmp(cmd, "disable") != 0) 8997 return 0; 8998 8999 *rc = fan_set_disable(); 9000 if (*rc == -ENXIO) 9001 pr_err("disable command accepted for unsupported access mode %d\n", 9002 fan_control_access_mode); 9003 else if (!*rc) 9004 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9005 9006 return 1; 9007 } 9008 9009 static int fan_write_cmd_speed(const char *cmd, int *rc) 9010 { 9011 int speed; 9012 9013 /* TODO: 9014 * Support speed <low> <medium> <high> ? */ 9015 9016 if (sscanf(cmd, "speed %d", &speed) != 1) 9017 return 0; 9018 9019 *rc = fan_set_speed(speed); 9020 if (*rc == -ENXIO) 9021 pr_err("speed command accepted for unsupported access mode %d\n", 9022 fan_control_access_mode); 9023 else if (!*rc) 9024 tpacpi_disclose_usertask("procfs fan", 9025 "set speed to %d\n", speed); 9026 9027 return 1; 9028 } 9029 9030 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9031 { 9032 int interval; 9033 9034 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9035 return 0; 9036 9037 if (interval < 0 || interval > 120) 9038 *rc = -EINVAL; 9039 else { 9040 fan_watchdog_maxinterval = interval; 9041 tpacpi_disclose_usertask("procfs fan", 9042 "set watchdog timer to %d\n", 9043 interval); 9044 } 9045 9046 return 1; 9047 } 9048 9049 static int fan_write(char *buf) 9050 { 9051 char *cmd; 9052 int rc = 0; 9053 9054 while (!rc && (cmd = next_cmd(&buf))) { 9055 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9056 fan_write_cmd_level(cmd, &rc)) && 9057 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9058 (fan_write_cmd_enable(cmd, &rc) || 9059 fan_write_cmd_disable(cmd, &rc) || 9060 fan_write_cmd_watchdog(cmd, &rc))) && 9061 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9062 fan_write_cmd_speed(cmd, &rc)) 9063 ) 9064 rc = -EINVAL; 9065 else if (!rc) 9066 fan_watchdog_reset(); 9067 } 9068 9069 return rc; 9070 } 9071 9072 static struct ibm_struct fan_driver_data = { 9073 .name = "fan", 9074 .read = fan_read, 9075 .write = fan_write, 9076 .exit = fan_exit, 9077 .suspend = fan_suspend, 9078 .resume = fan_resume, 9079 }; 9080 9081 /************************************************************************* 9082 * Mute LED subdriver 9083 */ 9084 9085 9086 struct tp_led_table { 9087 acpi_string name; 9088 int on_value; 9089 int off_value; 9090 int state; 9091 }; 9092 9093 static struct tp_led_table led_tables[] = { 9094 [TPACPI_LED_MUTE] = { 9095 .name = "SSMS", 9096 .on_value = 1, 9097 .off_value = 0, 9098 }, 9099 [TPACPI_LED_MICMUTE] = { 9100 .name = "MMTS", 9101 .on_value = 2, 9102 .off_value = 0, 9103 }, 9104 }; 9105 9106 static int mute_led_on_off(struct tp_led_table *t, bool state) 9107 { 9108 acpi_handle temp; 9109 int output; 9110 9111 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9112 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9113 return -EIO; 9114 } 9115 9116 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9117 state ? t->on_value : t->off_value)) 9118 return -EIO; 9119 9120 t->state = state; 9121 return state; 9122 } 9123 9124 int tpacpi_led_set(int whichled, bool on) 9125 { 9126 struct tp_led_table *t; 9127 9128 if (whichled < 0 || whichled >= TPACPI_LED_MAX) 9129 return -EINVAL; 9130 9131 t = &led_tables[whichled]; 9132 if (t->state < 0 || t->state == on) 9133 return t->state; 9134 return mute_led_on_off(t, on); 9135 } 9136 EXPORT_SYMBOL_GPL(tpacpi_led_set); 9137 9138 static int mute_led_init(struct ibm_init_struct *iibm) 9139 { 9140 acpi_handle temp; 9141 int i; 9142 9143 for (i = 0; i < TPACPI_LED_MAX; i++) { 9144 struct tp_led_table *t = &led_tables[i]; 9145 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) 9146 mute_led_on_off(t, false); 9147 else 9148 t->state = -ENODEV; 9149 } 9150 return 0; 9151 } 9152 9153 static void mute_led_exit(void) 9154 { 9155 int i; 9156 9157 for (i = 0; i < TPACPI_LED_MAX; i++) 9158 tpacpi_led_set(i, false); 9159 } 9160 9161 static void mute_led_resume(void) 9162 { 9163 int i; 9164 9165 for (i = 0; i < TPACPI_LED_MAX; i++) { 9166 struct tp_led_table *t = &led_tables[i]; 9167 if (t->state >= 0) 9168 mute_led_on_off(t, t->state); 9169 } 9170 } 9171 9172 static struct ibm_struct mute_led_driver_data = { 9173 .name = "mute_led", 9174 .exit = mute_led_exit, 9175 .resume = mute_led_resume, 9176 }; 9177 9178 /**************************************************************************** 9179 **************************************************************************** 9180 * 9181 * Infrastructure 9182 * 9183 **************************************************************************** 9184 ****************************************************************************/ 9185 9186 /* 9187 * HKEY event callout for other subdrivers go here 9188 * (yes, it is ugly, but it is quick, safe, and gets the job done 9189 */ 9190 static void tpacpi_driver_event(const unsigned int hkey_event) 9191 { 9192 if (ibm_backlight_device) { 9193 switch (hkey_event) { 9194 case TP_HKEY_EV_BRGHT_UP: 9195 case TP_HKEY_EV_BRGHT_DOWN: 9196 tpacpi_brightness_notify_change(); 9197 } 9198 } 9199 if (alsa_card) { 9200 switch (hkey_event) { 9201 case TP_HKEY_EV_VOL_UP: 9202 case TP_HKEY_EV_VOL_DOWN: 9203 case TP_HKEY_EV_VOL_MUTE: 9204 volume_alsa_notify_change(); 9205 } 9206 } 9207 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9208 enum led_brightness brightness; 9209 9210 mutex_lock(&kbdlight_mutex); 9211 9212 /* 9213 * Check the brightness actually changed, setting the brightness 9214 * through kbdlight_set_level() also triggers this event. 9215 */ 9216 brightness = kbdlight_sysfs_get(NULL); 9217 if (kbdlight_brightness != brightness) { 9218 kbdlight_brightness = brightness; 9219 led_classdev_notify_brightness_hw_changed( 9220 &tpacpi_led_kbdlight.led_classdev, brightness); 9221 } 9222 9223 mutex_unlock(&kbdlight_mutex); 9224 } 9225 } 9226 9227 static void hotkey_driver_event(const unsigned int scancode) 9228 { 9229 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 9230 } 9231 9232 /* sysfs name ---------------------------------------------------------- */ 9233 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, 9234 struct device_attribute *attr, 9235 char *buf) 9236 { 9237 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); 9238 } 9239 9240 static DEVICE_ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); 9241 9242 /* --------------------------------------------------------------------- */ 9243 9244 /* /proc support */ 9245 static struct proc_dir_entry *proc_dir; 9246 9247 /* 9248 * Module and infrastructure proble, init and exit handling 9249 */ 9250 9251 static bool force_load; 9252 9253 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 9254 static const char * __init str_supported(int is_supported) 9255 { 9256 static char text_unsupported[] __initdata = "not supported"; 9257 9258 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 9259 } 9260 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 9261 9262 static void ibm_exit(struct ibm_struct *ibm) 9263 { 9264 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 9265 9266 list_del_init(&ibm->all_drivers); 9267 9268 if (ibm->flags.acpi_notify_installed) { 9269 dbg_printk(TPACPI_DBG_EXIT, 9270 "%s: acpi_remove_notify_handler\n", ibm->name); 9271 BUG_ON(!ibm->acpi); 9272 acpi_remove_notify_handler(*ibm->acpi->handle, 9273 ibm->acpi->type, 9274 dispatch_acpi_notify); 9275 ibm->flags.acpi_notify_installed = 0; 9276 } 9277 9278 if (ibm->flags.proc_created) { 9279 dbg_printk(TPACPI_DBG_EXIT, 9280 "%s: remove_proc_entry\n", ibm->name); 9281 remove_proc_entry(ibm->name, proc_dir); 9282 ibm->flags.proc_created = 0; 9283 } 9284 9285 if (ibm->flags.acpi_driver_registered) { 9286 dbg_printk(TPACPI_DBG_EXIT, 9287 "%s: acpi_bus_unregister_driver\n", ibm->name); 9288 BUG_ON(!ibm->acpi); 9289 acpi_bus_unregister_driver(ibm->acpi->driver); 9290 kfree(ibm->acpi->driver); 9291 ibm->acpi->driver = NULL; 9292 ibm->flags.acpi_driver_registered = 0; 9293 } 9294 9295 if (ibm->flags.init_called && ibm->exit) { 9296 ibm->exit(); 9297 ibm->flags.init_called = 0; 9298 } 9299 9300 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 9301 } 9302 9303 static int __init ibm_init(struct ibm_init_struct *iibm) 9304 { 9305 int ret; 9306 struct ibm_struct *ibm = iibm->data; 9307 struct proc_dir_entry *entry; 9308 9309 BUG_ON(ibm == NULL); 9310 9311 INIT_LIST_HEAD(&ibm->all_drivers); 9312 9313 if (ibm->flags.experimental && !experimental) 9314 return 0; 9315 9316 dbg_printk(TPACPI_DBG_INIT, 9317 "probing for %s\n", ibm->name); 9318 9319 if (iibm->init) { 9320 ret = iibm->init(iibm); 9321 if (ret > 0) 9322 return 0; /* probe failed */ 9323 if (ret) 9324 return ret; 9325 9326 ibm->flags.init_called = 1; 9327 } 9328 9329 if (ibm->acpi) { 9330 if (ibm->acpi->hid) { 9331 ret = register_tpacpi_subdriver(ibm); 9332 if (ret) 9333 goto err_out; 9334 } 9335 9336 if (ibm->acpi->notify) { 9337 ret = setup_acpi_notify(ibm); 9338 if (ret == -ENODEV) { 9339 pr_notice("disabling subdriver %s\n", 9340 ibm->name); 9341 ret = 0; 9342 goto err_out; 9343 } 9344 if (ret < 0) 9345 goto err_out; 9346 } 9347 } 9348 9349 dbg_printk(TPACPI_DBG_INIT, 9350 "%s installed\n", ibm->name); 9351 9352 if (ibm->read) { 9353 umode_t mode = iibm->base_procfs_mode; 9354 9355 if (!mode) 9356 mode = S_IRUGO; 9357 if (ibm->write) 9358 mode |= S_IWUSR; 9359 entry = proc_create_data(ibm->name, mode, proc_dir, 9360 &dispatch_proc_fops, ibm); 9361 if (!entry) { 9362 pr_err("unable to create proc entry %s\n", ibm->name); 9363 ret = -ENODEV; 9364 goto err_out; 9365 } 9366 ibm->flags.proc_created = 1; 9367 } 9368 9369 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 9370 9371 return 0; 9372 9373 err_out: 9374 dbg_printk(TPACPI_DBG_INIT, 9375 "%s: at error exit path with result %d\n", 9376 ibm->name, ret); 9377 9378 ibm_exit(ibm); 9379 return (ret < 0) ? ret : 0; 9380 } 9381 9382 /* Probing */ 9383 9384 static bool __pure __init tpacpi_is_fw_digit(const char c) 9385 { 9386 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); 9387 } 9388 9389 static bool __pure __init tpacpi_is_valid_fw_id(const char * const s, 9390 const char t) 9391 { 9392 /* 9393 * Most models: xxyTkkWW (#.##c) 9394 * Ancient 570/600 and -SL lacks (#.##c) 9395 */ 9396 if (s && strlen(s) >= 8 && 9397 tpacpi_is_fw_digit(s[0]) && 9398 tpacpi_is_fw_digit(s[1]) && 9399 s[2] == t && 9400 (s[3] == 'T' || s[3] == 'N') && 9401 tpacpi_is_fw_digit(s[4]) && 9402 tpacpi_is_fw_digit(s[5])) 9403 return true; 9404 9405 /* New models: xxxyTkkW (#.##c); T550 and some others */ 9406 return s && strlen(s) >= 8 && 9407 tpacpi_is_fw_digit(s[0]) && 9408 tpacpi_is_fw_digit(s[1]) && 9409 tpacpi_is_fw_digit(s[2]) && 9410 s[3] == t && 9411 (s[4] == 'T' || s[4] == 'N') && 9412 tpacpi_is_fw_digit(s[5]) && 9413 tpacpi_is_fw_digit(s[6]); 9414 } 9415 9416 /* returns 0 - probe ok, or < 0 - probe error. 9417 * Probe ok doesn't mean thinkpad found. 9418 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 9419 static int __must_check __init get_thinkpad_model_data( 9420 struct thinkpad_id_data *tp) 9421 { 9422 const struct dmi_device *dev = NULL; 9423 char ec_fw_string[18]; 9424 char const *s; 9425 9426 if (!tp) 9427 return -EINVAL; 9428 9429 memset(tp, 0, sizeof(*tp)); 9430 9431 if (dmi_name_in_vendors("IBM")) 9432 tp->vendor = PCI_VENDOR_ID_IBM; 9433 else if (dmi_name_in_vendors("LENOVO")) 9434 tp->vendor = PCI_VENDOR_ID_LENOVO; 9435 else 9436 return 0; 9437 9438 s = dmi_get_system_info(DMI_BIOS_VERSION); 9439 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 9440 if (s && !tp->bios_version_str) 9441 return -ENOMEM; 9442 9443 /* Really ancient ThinkPad 240X will fail this, which is fine */ 9444 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') || 9445 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C'))) 9446 return 0; 9447 9448 tp->bios_model = tp->bios_version_str[0] 9449 | (tp->bios_version_str[1] << 8); 9450 tp->bios_release = (tp->bios_version_str[4] << 8) 9451 | tp->bios_version_str[5]; 9452 9453 /* 9454 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 9455 * X32 or newer, all Z series; Some models must have an 9456 * up-to-date BIOS or they will not be detected. 9457 * 9458 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9459 */ 9460 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 9461 if (sscanf(dev->name, 9462 "IBM ThinkPad Embedded Controller -[%17c", 9463 ec_fw_string) == 1) { 9464 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 9465 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 9466 9467 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 9468 if (!tp->ec_version_str) 9469 return -ENOMEM; 9470 9471 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { 9472 tp->ec_model = ec_fw_string[0] 9473 | (ec_fw_string[1] << 8); 9474 tp->ec_release = (ec_fw_string[4] << 8) 9475 | ec_fw_string[5]; 9476 } else { 9477 pr_notice("ThinkPad firmware release %s " 9478 "doesn't match the known patterns\n", 9479 ec_fw_string); 9480 pr_notice("please report this to %s\n", 9481 TPACPI_MAIL); 9482 } 9483 break; 9484 } 9485 } 9486 9487 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 9488 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 9489 tp->model_str = kstrdup(s, GFP_KERNEL); 9490 if (!tp->model_str) 9491 return -ENOMEM; 9492 } else { 9493 s = dmi_get_system_info(DMI_BIOS_VENDOR); 9494 if (s && !(strncasecmp(s, "Lenovo", 6))) { 9495 tp->model_str = kstrdup(s, GFP_KERNEL); 9496 if (!tp->model_str) 9497 return -ENOMEM; 9498 } 9499 } 9500 9501 s = dmi_get_system_info(DMI_PRODUCT_NAME); 9502 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 9503 if (s && !tp->nummodel_str) 9504 return -ENOMEM; 9505 9506 return 0; 9507 } 9508 9509 static int __init probe_for_thinkpad(void) 9510 { 9511 int is_thinkpad; 9512 9513 if (acpi_disabled) 9514 return -ENODEV; 9515 9516 /* It would be dangerous to run the driver in this case */ 9517 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 9518 return -ENODEV; 9519 9520 /* 9521 * Non-ancient models have better DMI tagging, but very old models 9522 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 9523 */ 9524 is_thinkpad = (thinkpad_id.model_str != NULL) || 9525 (thinkpad_id.ec_model != 0) || 9526 tpacpi_is_fw_known(); 9527 9528 /* The EC handler is required */ 9529 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 9530 if (!ec_handle) { 9531 if (is_thinkpad) 9532 pr_err("Not yet supported ThinkPad detected!\n"); 9533 return -ENODEV; 9534 } 9535 9536 if (!is_thinkpad && !force_load) 9537 return -ENODEV; 9538 9539 return 0; 9540 } 9541 9542 static void __init thinkpad_acpi_init_banner(void) 9543 { 9544 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 9545 pr_info("%s\n", TPACPI_URL); 9546 9547 pr_info("ThinkPad BIOS %s, EC %s\n", 9548 (thinkpad_id.bios_version_str) ? 9549 thinkpad_id.bios_version_str : "unknown", 9550 (thinkpad_id.ec_version_str) ? 9551 thinkpad_id.ec_version_str : "unknown"); 9552 9553 BUG_ON(!thinkpad_id.vendor); 9554 9555 if (thinkpad_id.model_str) 9556 pr_info("%s %s, model %s\n", 9557 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 9558 "IBM" : ((thinkpad_id.vendor == 9559 PCI_VENDOR_ID_LENOVO) ? 9560 "Lenovo" : "Unknown vendor"), 9561 thinkpad_id.model_str, 9562 (thinkpad_id.nummodel_str) ? 9563 thinkpad_id.nummodel_str : "unknown"); 9564 } 9565 9566 /* Module init, exit, parameters */ 9567 9568 static struct ibm_init_struct ibms_init[] __initdata = { 9569 { 9570 .data = &thinkpad_acpi_driver_data, 9571 }, 9572 { 9573 .init = hotkey_init, 9574 .data = &hotkey_driver_data, 9575 }, 9576 { 9577 .init = bluetooth_init, 9578 .data = &bluetooth_driver_data, 9579 }, 9580 { 9581 .init = wan_init, 9582 .data = &wan_driver_data, 9583 }, 9584 { 9585 .init = uwb_init, 9586 .data = &uwb_driver_data, 9587 }, 9588 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 9589 { 9590 .init = video_init, 9591 .base_procfs_mode = S_IRUSR, 9592 .data = &video_driver_data, 9593 }, 9594 #endif 9595 { 9596 .init = kbdlight_init, 9597 .data = &kbdlight_driver_data, 9598 }, 9599 { 9600 .init = light_init, 9601 .data = &light_driver_data, 9602 }, 9603 { 9604 .init = cmos_init, 9605 .data = &cmos_driver_data, 9606 }, 9607 { 9608 .init = led_init, 9609 .data = &led_driver_data, 9610 }, 9611 { 9612 .init = beep_init, 9613 .data = &beep_driver_data, 9614 }, 9615 { 9616 .init = thermal_init, 9617 .data = &thermal_driver_data, 9618 }, 9619 { 9620 .init = brightness_init, 9621 .data = &brightness_driver_data, 9622 }, 9623 { 9624 .init = volume_init, 9625 .data = &volume_driver_data, 9626 }, 9627 { 9628 .init = fan_init, 9629 .data = &fan_driver_data, 9630 }, 9631 { 9632 .init = mute_led_init, 9633 .data = &mute_led_driver_data, 9634 }, 9635 }; 9636 9637 static int __init set_ibm_param(const char *val, struct kernel_param *kp) 9638 { 9639 unsigned int i; 9640 struct ibm_struct *ibm; 9641 9642 if (!kp || !kp->name || !val) 9643 return -EINVAL; 9644 9645 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9646 ibm = ibms_init[i].data; 9647 WARN_ON(ibm == NULL); 9648 9649 if (!ibm || !ibm->name) 9650 continue; 9651 9652 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 9653 if (strlen(val) > sizeof(ibms_init[i].param) - 2) 9654 return -ENOSPC; 9655 strcpy(ibms_init[i].param, val); 9656 strcat(ibms_init[i].param, ","); 9657 return 0; 9658 } 9659 } 9660 9661 return -EINVAL; 9662 } 9663 9664 module_param(experimental, int, 0444); 9665 MODULE_PARM_DESC(experimental, 9666 "Enables experimental features when non-zero"); 9667 9668 module_param_named(debug, dbg_level, uint, 0); 9669 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 9670 9671 module_param(force_load, bool, 0444); 9672 MODULE_PARM_DESC(force_load, 9673 "Attempts to load the driver even on a " 9674 "mis-identified ThinkPad when true"); 9675 9676 module_param_named(fan_control, fan_control_allowed, bool, 0444); 9677 MODULE_PARM_DESC(fan_control, 9678 "Enables setting fan parameters features when true"); 9679 9680 module_param_named(brightness_mode, brightness_mode, uint, 0444); 9681 MODULE_PARM_DESC(brightness_mode, 9682 "Selects brightness control strategy: " 9683 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 9684 9685 module_param(brightness_enable, uint, 0444); 9686 MODULE_PARM_DESC(brightness_enable, 9687 "Enables backlight control when 1, disables when 0"); 9688 9689 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 9690 module_param_named(volume_mode, volume_mode, uint, 0444); 9691 MODULE_PARM_DESC(volume_mode, 9692 "Selects volume control strategy: " 9693 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 9694 9695 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 9696 MODULE_PARM_DESC(volume_capabilities, 9697 "Selects the mixer capabilites: " 9698 "0=auto, 1=volume and mute, 2=mute only"); 9699 9700 module_param_named(volume_control, volume_control_allowed, bool, 0444); 9701 MODULE_PARM_DESC(volume_control, 9702 "Enables software override for the console audio " 9703 "control when true"); 9704 9705 module_param_named(software_mute, software_mute_requested, bool, 0444); 9706 MODULE_PARM_DESC(software_mute, 9707 "Request full software mute control"); 9708 9709 /* ALSA module API parameters */ 9710 module_param_named(index, alsa_index, int, 0444); 9711 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 9712 module_param_named(id, alsa_id, charp, 0444); 9713 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 9714 module_param_named(enable, alsa_enable, bool, 0444); 9715 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 9716 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 9717 9718 #define TPACPI_PARAM(feature) \ 9719 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 9720 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ 9721 "at module load, see documentation") 9722 9723 TPACPI_PARAM(hotkey); 9724 TPACPI_PARAM(bluetooth); 9725 TPACPI_PARAM(video); 9726 TPACPI_PARAM(light); 9727 TPACPI_PARAM(cmos); 9728 TPACPI_PARAM(led); 9729 TPACPI_PARAM(beep); 9730 TPACPI_PARAM(brightness); 9731 TPACPI_PARAM(volume); 9732 TPACPI_PARAM(fan); 9733 9734 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 9735 module_param(dbg_wlswemul, uint, 0444); 9736 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 9737 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 9738 MODULE_PARM_DESC(wlsw_state, 9739 "Initial state of the emulated WLSW switch"); 9740 9741 module_param(dbg_bluetoothemul, uint, 0444); 9742 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 9743 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 9744 MODULE_PARM_DESC(bluetooth_state, 9745 "Initial state of the emulated bluetooth switch"); 9746 9747 module_param(dbg_wwanemul, uint, 0444); 9748 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 9749 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 9750 MODULE_PARM_DESC(wwan_state, 9751 "Initial state of the emulated WWAN switch"); 9752 9753 module_param(dbg_uwbemul, uint, 0444); 9754 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 9755 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 9756 MODULE_PARM_DESC(uwb_state, 9757 "Initial state of the emulated UWB switch"); 9758 #endif 9759 9760 static void thinkpad_acpi_module_exit(void) 9761 { 9762 struct ibm_struct *ibm, *itmp; 9763 9764 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 9765 9766 list_for_each_entry_safe_reverse(ibm, itmp, 9767 &tpacpi_all_drivers, 9768 all_drivers) { 9769 ibm_exit(ibm); 9770 } 9771 9772 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 9773 9774 if (tpacpi_inputdev) { 9775 if (tp_features.input_device_registered) 9776 input_unregister_device(tpacpi_inputdev); 9777 else 9778 input_free_device(tpacpi_inputdev); 9779 kfree(hotkey_keycode_map); 9780 } 9781 9782 if (tpacpi_hwmon) 9783 hwmon_device_unregister(tpacpi_hwmon); 9784 9785 if (tp_features.sensors_pdev_attrs_registered) 9786 device_remove_file(&tpacpi_sensors_pdev->dev, &dev_attr_name); 9787 if (tpacpi_sensors_pdev) 9788 platform_device_unregister(tpacpi_sensors_pdev); 9789 if (tpacpi_pdev) 9790 platform_device_unregister(tpacpi_pdev); 9791 9792 if (tp_features.sensors_pdrv_attrs_registered) 9793 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 9794 if (tp_features.platform_drv_attrs_registered) 9795 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 9796 9797 if (tp_features.sensors_pdrv_registered) 9798 platform_driver_unregister(&tpacpi_hwmon_pdriver); 9799 9800 if (tp_features.platform_drv_registered) 9801 platform_driver_unregister(&tpacpi_pdriver); 9802 9803 if (proc_dir) 9804 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 9805 9806 if (tpacpi_wq) 9807 destroy_workqueue(tpacpi_wq); 9808 9809 kfree(thinkpad_id.bios_version_str); 9810 kfree(thinkpad_id.ec_version_str); 9811 kfree(thinkpad_id.model_str); 9812 kfree(thinkpad_id.nummodel_str); 9813 } 9814 9815 9816 static int __init thinkpad_acpi_module_init(void) 9817 { 9818 int ret, i; 9819 9820 tpacpi_lifecycle = TPACPI_LIFE_INIT; 9821 9822 /* Driver-level probe */ 9823 9824 ret = get_thinkpad_model_data(&thinkpad_id); 9825 if (ret) { 9826 pr_err("unable to get DMI data: %d\n", ret); 9827 thinkpad_acpi_module_exit(); 9828 return ret; 9829 } 9830 ret = probe_for_thinkpad(); 9831 if (ret) { 9832 thinkpad_acpi_module_exit(); 9833 return ret; 9834 } 9835 9836 /* Driver initialization */ 9837 9838 thinkpad_acpi_init_banner(); 9839 tpacpi_check_outdated_fw(); 9840 9841 TPACPI_ACPIHANDLE_INIT(ecrd); 9842 TPACPI_ACPIHANDLE_INIT(ecwr); 9843 9844 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 9845 if (!tpacpi_wq) { 9846 thinkpad_acpi_module_exit(); 9847 return -ENOMEM; 9848 } 9849 9850 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 9851 if (!proc_dir) { 9852 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 9853 thinkpad_acpi_module_exit(); 9854 return -ENODEV; 9855 } 9856 9857 ret = platform_driver_register(&tpacpi_pdriver); 9858 if (ret) { 9859 pr_err("unable to register main platform driver\n"); 9860 thinkpad_acpi_module_exit(); 9861 return ret; 9862 } 9863 tp_features.platform_drv_registered = 1; 9864 9865 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 9866 if (ret) { 9867 pr_err("unable to register hwmon platform driver\n"); 9868 thinkpad_acpi_module_exit(); 9869 return ret; 9870 } 9871 tp_features.sensors_pdrv_registered = 1; 9872 9873 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 9874 if (!ret) { 9875 tp_features.platform_drv_attrs_registered = 1; 9876 ret = tpacpi_create_driver_attributes( 9877 &tpacpi_hwmon_pdriver.driver); 9878 } 9879 if (ret) { 9880 pr_err("unable to create sysfs driver attributes\n"); 9881 thinkpad_acpi_module_exit(); 9882 return ret; 9883 } 9884 tp_features.sensors_pdrv_attrs_registered = 1; 9885 9886 9887 /* Device initialization */ 9888 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 9889 NULL, 0); 9890 if (IS_ERR(tpacpi_pdev)) { 9891 ret = PTR_ERR(tpacpi_pdev); 9892 tpacpi_pdev = NULL; 9893 pr_err("unable to register platform device\n"); 9894 thinkpad_acpi_module_exit(); 9895 return ret; 9896 } 9897 tpacpi_sensors_pdev = platform_device_register_simple( 9898 TPACPI_HWMON_DRVR_NAME, 9899 -1, NULL, 0); 9900 if (IS_ERR(tpacpi_sensors_pdev)) { 9901 ret = PTR_ERR(tpacpi_sensors_pdev); 9902 tpacpi_sensors_pdev = NULL; 9903 pr_err("unable to register hwmon platform device\n"); 9904 thinkpad_acpi_module_exit(); 9905 return ret; 9906 } 9907 ret = device_create_file(&tpacpi_sensors_pdev->dev, &dev_attr_name); 9908 if (ret) { 9909 pr_err("unable to create sysfs hwmon device attributes\n"); 9910 thinkpad_acpi_module_exit(); 9911 return ret; 9912 } 9913 tp_features.sensors_pdev_attrs_registered = 1; 9914 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); 9915 if (IS_ERR(tpacpi_hwmon)) { 9916 ret = PTR_ERR(tpacpi_hwmon); 9917 tpacpi_hwmon = NULL; 9918 pr_err("unable to register hwmon device\n"); 9919 thinkpad_acpi_module_exit(); 9920 return ret; 9921 } 9922 mutex_init(&tpacpi_inputdev_send_mutex); 9923 tpacpi_inputdev = input_allocate_device(); 9924 if (!tpacpi_inputdev) { 9925 thinkpad_acpi_module_exit(); 9926 return -ENOMEM; 9927 } else { 9928 /* Prepare input device, but don't register */ 9929 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 9930 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 9931 tpacpi_inputdev->id.bustype = BUS_HOST; 9932 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 9933 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 9934 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 9935 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 9936 } 9937 9938 /* Init subdriver dependencies */ 9939 tpacpi_detect_brightness_capabilities(); 9940 9941 /* Init subdrivers */ 9942 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9943 ret = ibm_init(&ibms_init[i]); 9944 if (ret >= 0 && *ibms_init[i].param) 9945 ret = ibms_init[i].data->write(ibms_init[i].param); 9946 if (ret < 0) { 9947 thinkpad_acpi_module_exit(); 9948 return ret; 9949 } 9950 } 9951 9952 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 9953 9954 ret = input_register_device(tpacpi_inputdev); 9955 if (ret < 0) { 9956 pr_err("unable to register input device\n"); 9957 thinkpad_acpi_module_exit(); 9958 return ret; 9959 } else { 9960 tp_features.input_device_registered = 1; 9961 } 9962 9963 return 0; 9964 } 9965 9966 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 9967 9968 /* 9969 * This will autoload the driver in almost every ThinkPad 9970 * in widespread use. 9971 * 9972 * Only _VERY_ old models, like the 240, 240x and 570 lack 9973 * the HKEY event interface. 9974 */ 9975 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 9976 9977 /* 9978 * DMI matching for module autoloading 9979 * 9980 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9981 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 9982 * 9983 * Only models listed in thinkwiki will be supported, so add yours 9984 * if it is not there yet. 9985 */ 9986 #define IBM_BIOS_MODULE_ALIAS(__type) \ 9987 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 9988 9989 /* Ancient thinkpad BIOSes have to be identified by 9990 * BIOS type or model number, and there are far less 9991 * BIOS types than model numbers... */ 9992 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 9993 9994 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 9995 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 9996 MODULE_DESCRIPTION(TPACPI_DESC); 9997 MODULE_VERSION(TPACPI_VERSION); 9998 MODULE_LICENSE("GPL"); 9999 10000 module_init(thinkpad_acpi_module_init); 10001 module_exit(thinkpad_acpi_module_exit); 10002