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 0x030000 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 /* Further user-interface events */ 218 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 219 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 220 221 /* Misc */ 222 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 223 }; 224 225 /**************************************************************************** 226 * Main driver 227 */ 228 229 #define TPACPI_NAME "thinkpad" 230 #define TPACPI_DESC "ThinkPad ACPI Extras" 231 #define TPACPI_FILE TPACPI_NAME "_acpi" 232 #define TPACPI_URL "http://ibm-acpi.sf.net/" 233 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 234 235 #define TPACPI_PROC_DIR "ibm" 236 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 237 #define TPACPI_DRVR_NAME TPACPI_FILE 238 #define TPACPI_DRVR_SHORTNAME "tpacpi" 239 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 240 241 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 242 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 243 244 #define TPACPI_MAX_ACPI_ARGS 3 245 246 /* Debugging printk groups */ 247 #define TPACPI_DBG_ALL 0xffff 248 #define TPACPI_DBG_DISCLOSETASK 0x8000 249 #define TPACPI_DBG_INIT 0x0001 250 #define TPACPI_DBG_EXIT 0x0002 251 #define TPACPI_DBG_RFKILL 0x0004 252 #define TPACPI_DBG_HKEY 0x0008 253 #define TPACPI_DBG_FAN 0x0010 254 #define TPACPI_DBG_BRGHT 0x0020 255 #define TPACPI_DBG_MIXER 0x0040 256 257 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 258 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 259 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 260 261 262 /**************************************************************************** 263 * Driver-wide structs and misc. variables 264 */ 265 266 struct ibm_struct; 267 268 struct tp_acpi_drv_struct { 269 const struct acpi_device_id *hid; 270 struct acpi_driver *driver; 271 272 void (*notify) (struct ibm_struct *, u32); 273 acpi_handle *handle; 274 u32 type; 275 struct acpi_device *device; 276 }; 277 278 struct ibm_struct { 279 char *name; 280 281 int (*read) (struct seq_file *); 282 int (*write) (char *); 283 void (*exit) (void); 284 void (*resume) (void); 285 void (*suspend) (void); 286 void (*shutdown) (void); 287 288 struct list_head all_drivers; 289 290 struct tp_acpi_drv_struct *acpi; 291 292 struct { 293 u8 acpi_driver_registered:1; 294 u8 acpi_notify_installed:1; 295 u8 proc_created:1; 296 u8 init_called:1; 297 u8 experimental:1; 298 } flags; 299 }; 300 301 struct ibm_init_struct { 302 char param[32]; 303 304 int (*init) (struct ibm_init_struct *); 305 umode_t base_procfs_mode; 306 struct ibm_struct *data; 307 }; 308 309 static struct { 310 u32 bluetooth:1; 311 u32 hotkey:1; 312 u32 hotkey_mask:1; 313 u32 hotkey_wlsw:1; 314 enum { 315 TP_HOTKEY_TABLET_NONE = 0, 316 TP_HOTKEY_TABLET_USES_MHKG, 317 TP_HOTKEY_TABLET_USES_GMMS, 318 } hotkey_tablet; 319 u32 kbdlight:1; 320 u32 light:1; 321 u32 light_status:1; 322 u32 bright_acpimode:1; 323 u32 bright_unkfw:1; 324 u32 wan:1; 325 u32 uwb:1; 326 u32 fan_ctrl_status_undef:1; 327 u32 second_fan:1; 328 u32 beep_needs_two_args:1; 329 u32 mixer_no_level_control:1; 330 u32 input_device_registered:1; 331 u32 platform_drv_registered:1; 332 u32 platform_drv_attrs_registered:1; 333 u32 sensors_pdrv_registered:1; 334 u32 sensors_pdrv_attrs_registered:1; 335 u32 sensors_pdev_attrs_registered:1; 336 u32 hotkey_poll_active:1; 337 u32 has_adaptive_kbd:1; 338 } tp_features; 339 340 static struct { 341 u16 hotkey_mask_ff:1; 342 u16 volume_ctrl_forbidden:1; 343 } tp_warned; 344 345 struct thinkpad_id_data { 346 unsigned int vendor; /* ThinkPad vendor: 347 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 348 349 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 350 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 351 352 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ 353 u16 ec_model; 354 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ 355 u16 ec_release; 356 357 char *model_str; /* ThinkPad T43 */ 358 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 359 }; 360 static struct thinkpad_id_data thinkpad_id; 361 362 static enum { 363 TPACPI_LIFE_INIT = 0, 364 TPACPI_LIFE_RUNNING, 365 TPACPI_LIFE_EXITING, 366 } tpacpi_lifecycle; 367 368 static int experimental; 369 static u32 dbg_level; 370 371 static struct workqueue_struct *tpacpi_wq; 372 373 enum led_status_t { 374 TPACPI_LED_OFF = 0, 375 TPACPI_LED_ON, 376 TPACPI_LED_BLINK, 377 }; 378 379 /* tpacpi LED class */ 380 struct tpacpi_led_classdev { 381 struct led_classdev led_classdev; 382 int led; 383 }; 384 385 /* brightness level capabilities */ 386 static unsigned int bright_maxlvl; /* 0 = unknown */ 387 388 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 389 static int dbg_wlswemul; 390 static bool tpacpi_wlsw_emulstate; 391 static int dbg_bluetoothemul; 392 static bool tpacpi_bluetooth_emulstate; 393 static int dbg_wwanemul; 394 static bool tpacpi_wwan_emulstate; 395 static int dbg_uwbemul; 396 static bool tpacpi_uwb_emulstate; 397 #endif 398 399 400 /************************************************************************* 401 * Debugging helpers 402 */ 403 404 #define dbg_printk(a_dbg_level, format, arg...) \ 405 do { \ 406 if (dbg_level & (a_dbg_level)) \ 407 printk(KERN_DEBUG pr_fmt("%s: " format), \ 408 __func__, ##arg); \ 409 } while (0) 410 411 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 412 #define vdbg_printk dbg_printk 413 static const char *str_supported(int is_supported); 414 #else 415 static inline const char *str_supported(int is_supported) { return ""; } 416 #define vdbg_printk(a_dbg_level, format, arg...) \ 417 do { if (0) no_printk(format, ##arg); } while (0) 418 #endif 419 420 static void tpacpi_log_usertask(const char * const what) 421 { 422 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 423 what, task_tgid_vnr(current)); 424 } 425 426 #define tpacpi_disclose_usertask(what, format, arg...) \ 427 do { \ 428 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 429 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 430 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 431 what, task_tgid_vnr(current), ## arg); \ 432 } \ 433 } while (0) 434 435 /* 436 * Quirk handling helpers 437 * 438 * ThinkPad IDs and versions seen in the field so far 439 * are two-characters from the set [0-9A-Z], i.e. base 36. 440 * 441 * We use values well outside that range as specials. 442 */ 443 444 #define TPACPI_MATCH_ANY 0xffffU 445 #define TPACPI_MATCH_UNKNOWN 0U 446 447 /* TPID('1', 'Y') == 0x5931 */ 448 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) 449 450 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 451 { .vendor = PCI_VENDOR_ID_IBM, \ 452 .bios = TPID(__id1, __id2), \ 453 .ec = TPACPI_MATCH_ANY, \ 454 .quirks = (__quirk) } 455 456 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 457 { .vendor = PCI_VENDOR_ID_LENOVO, \ 458 .bios = TPID(__id1, __id2), \ 459 .ec = TPACPI_MATCH_ANY, \ 460 .quirks = (__quirk) } 461 462 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 463 { .vendor = PCI_VENDOR_ID_LENOVO, \ 464 .bios = TPACPI_MATCH_ANY, \ 465 .ec = TPID(__id1, __id2), \ 466 .quirks = (__quirk) } 467 468 struct tpacpi_quirk { 469 unsigned int vendor; 470 u16 bios; 471 u16 ec; 472 unsigned long quirks; 473 }; 474 475 /** 476 * tpacpi_check_quirks() - search BIOS/EC version on a list 477 * @qlist: array of &struct tpacpi_quirk 478 * @qlist_size: number of elements in @qlist 479 * 480 * Iterates over a quirks list until one is found that matches the 481 * ThinkPad's vendor, BIOS and EC model. 482 * 483 * Returns 0 if nothing matches, otherwise returns the quirks field of 484 * the matching &struct tpacpi_quirk entry. 485 * 486 * The match criteria is: vendor, ec and bios much match. 487 */ 488 static unsigned long __init tpacpi_check_quirks( 489 const struct tpacpi_quirk *qlist, 490 unsigned int qlist_size) 491 { 492 while (qlist_size) { 493 if ((qlist->vendor == thinkpad_id.vendor || 494 qlist->vendor == TPACPI_MATCH_ANY) && 495 (qlist->bios == thinkpad_id.bios_model || 496 qlist->bios == TPACPI_MATCH_ANY) && 497 (qlist->ec == thinkpad_id.ec_model || 498 qlist->ec == TPACPI_MATCH_ANY)) 499 return qlist->quirks; 500 501 qlist_size--; 502 qlist++; 503 } 504 return 0; 505 } 506 507 static inline bool __pure __init tpacpi_is_lenovo(void) 508 { 509 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 510 } 511 512 static inline bool __pure __init tpacpi_is_ibm(void) 513 { 514 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 515 } 516 517 /**************************************************************************** 518 **************************************************************************** 519 * 520 * ACPI Helpers and device model 521 * 522 **************************************************************************** 523 ****************************************************************************/ 524 525 /************************************************************************* 526 * ACPI basic handles 527 */ 528 529 static acpi_handle root_handle; 530 static acpi_handle ec_handle; 531 532 #define TPACPI_HANDLE(object, parent, paths...) \ 533 static acpi_handle object##_handle; \ 534 static const acpi_handle * const object##_parent __initconst = \ 535 &parent##_handle; \ 536 static char *object##_paths[] __initdata = { paths } 537 538 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 539 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 540 541 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 542 /* T4x, X31, X40 */ 543 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 544 "\\CMS", /* R40, R40e */ 545 ); /* all others */ 546 547 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 548 "^HKEY", /* R30, R31 */ 549 "HKEY", /* all others */ 550 ); /* 570 */ 551 552 /************************************************************************* 553 * ACPI helpers 554 */ 555 556 static int acpi_evalf(acpi_handle handle, 557 int *res, char *method, char *fmt, ...) 558 { 559 char *fmt0 = fmt; 560 struct acpi_object_list params; 561 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 562 struct acpi_buffer result, *resultp; 563 union acpi_object out_obj; 564 acpi_status status; 565 va_list ap; 566 char res_type; 567 int success; 568 int quiet; 569 570 if (!*fmt) { 571 pr_err("acpi_evalf() called with empty format\n"); 572 return 0; 573 } 574 575 if (*fmt == 'q') { 576 quiet = 1; 577 fmt++; 578 } else 579 quiet = 0; 580 581 res_type = *(fmt++); 582 583 params.count = 0; 584 params.pointer = &in_objs[0]; 585 586 va_start(ap, fmt); 587 while (*fmt) { 588 char c = *(fmt++); 589 switch (c) { 590 case 'd': /* int */ 591 in_objs[params.count].integer.value = va_arg(ap, int); 592 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 593 break; 594 /* add more types as needed */ 595 default: 596 pr_err("acpi_evalf() called with invalid format character '%c'\n", 597 c); 598 va_end(ap); 599 return 0; 600 } 601 } 602 va_end(ap); 603 604 if (res_type != 'v') { 605 result.length = sizeof(out_obj); 606 result.pointer = &out_obj; 607 resultp = &result; 608 } else 609 resultp = NULL; 610 611 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 612 613 switch (res_type) { 614 case 'd': /* int */ 615 success = (status == AE_OK && 616 out_obj.type == ACPI_TYPE_INTEGER); 617 if (success && res) 618 *res = out_obj.integer.value; 619 break; 620 case 'v': /* void */ 621 success = status == AE_OK; 622 break; 623 /* add more types as needed */ 624 default: 625 pr_err("acpi_evalf() called with invalid format character '%c'\n", 626 res_type); 627 return 0; 628 } 629 630 if (!success && !quiet) 631 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 632 method, fmt0, acpi_format_exception(status)); 633 634 return success; 635 } 636 637 static int acpi_ec_read(int i, u8 *p) 638 { 639 int v; 640 641 if (ecrd_handle) { 642 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 643 return 0; 644 *p = v; 645 } else { 646 if (ec_read(i, p) < 0) 647 return 0; 648 } 649 650 return 1; 651 } 652 653 static int acpi_ec_write(int i, u8 v) 654 { 655 if (ecwr_handle) { 656 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 657 return 0; 658 } else { 659 if (ec_write(i, v) < 0) 660 return 0; 661 } 662 663 return 1; 664 } 665 666 static int issue_thinkpad_cmos_command(int cmos_cmd) 667 { 668 if (!cmos_handle) 669 return -ENXIO; 670 671 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 672 return -EIO; 673 674 return 0; 675 } 676 677 /************************************************************************* 678 * ACPI device model 679 */ 680 681 #define TPACPI_ACPIHANDLE_INIT(object) \ 682 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 683 object##_paths, ARRAY_SIZE(object##_paths)) 684 685 static void __init drv_acpi_handle_init(const char *name, 686 acpi_handle *handle, const acpi_handle parent, 687 char **paths, const int num_paths) 688 { 689 int i; 690 acpi_status status; 691 692 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 693 name); 694 695 for (i = 0; i < num_paths; i++) { 696 status = acpi_get_handle(parent, paths[i], handle); 697 if (ACPI_SUCCESS(status)) { 698 dbg_printk(TPACPI_DBG_INIT, 699 "Found ACPI handle %s for %s\n", 700 paths[i], name); 701 return; 702 } 703 } 704 705 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 706 name); 707 *handle = NULL; 708 } 709 710 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 711 u32 level, void *context, void **return_value) 712 { 713 struct acpi_device *dev; 714 if (!strcmp(context, "video")) { 715 if (acpi_bus_get_device(handle, &dev)) 716 return AE_OK; 717 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 718 return AE_OK; 719 } 720 721 *(acpi_handle *)return_value = handle; 722 723 return AE_CTRL_TERMINATE; 724 } 725 726 static void __init tpacpi_acpi_handle_locate(const char *name, 727 const char *hid, 728 acpi_handle *handle) 729 { 730 acpi_status status; 731 acpi_handle device_found; 732 733 BUG_ON(!name || !handle); 734 vdbg_printk(TPACPI_DBG_INIT, 735 "trying to locate ACPI handle for %s, using HID %s\n", 736 name, hid ? hid : "NULL"); 737 738 memset(&device_found, 0, sizeof(device_found)); 739 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 740 (void *)name, &device_found); 741 742 *handle = NULL; 743 744 if (ACPI_SUCCESS(status)) { 745 *handle = device_found; 746 dbg_printk(TPACPI_DBG_INIT, 747 "Found ACPI handle for %s\n", name); 748 } else { 749 vdbg_printk(TPACPI_DBG_INIT, 750 "Could not locate an ACPI handle for %s: %s\n", 751 name, acpi_format_exception(status)); 752 } 753 } 754 755 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 756 { 757 struct ibm_struct *ibm = data; 758 759 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 760 return; 761 762 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 763 return; 764 765 ibm->acpi->notify(ibm, event); 766 } 767 768 static int __init setup_acpi_notify(struct ibm_struct *ibm) 769 { 770 acpi_status status; 771 int rc; 772 773 BUG_ON(!ibm->acpi); 774 775 if (!*ibm->acpi->handle) 776 return 0; 777 778 vdbg_printk(TPACPI_DBG_INIT, 779 "setting up ACPI notify for %s\n", ibm->name); 780 781 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 782 if (rc < 0) { 783 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 784 return -ENODEV; 785 } 786 787 ibm->acpi->device->driver_data = ibm; 788 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 789 TPACPI_ACPI_EVENT_PREFIX, 790 ibm->name); 791 792 status = acpi_install_notify_handler(*ibm->acpi->handle, 793 ibm->acpi->type, dispatch_acpi_notify, ibm); 794 if (ACPI_FAILURE(status)) { 795 if (status == AE_ALREADY_EXISTS) { 796 pr_notice("another device driver is already handling %s events\n", 797 ibm->name); 798 } else { 799 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 800 ibm->name, acpi_format_exception(status)); 801 } 802 return -ENODEV; 803 } 804 ibm->flags.acpi_notify_installed = 1; 805 return 0; 806 } 807 808 static int __init tpacpi_device_add(struct acpi_device *device) 809 { 810 return 0; 811 } 812 813 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 814 { 815 int rc; 816 817 dbg_printk(TPACPI_DBG_INIT, 818 "registering %s as an ACPI driver\n", ibm->name); 819 820 BUG_ON(!ibm->acpi); 821 822 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 823 if (!ibm->acpi->driver) { 824 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 825 return -ENOMEM; 826 } 827 828 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 829 ibm->acpi->driver->ids = ibm->acpi->hid; 830 831 ibm->acpi->driver->ops.add = &tpacpi_device_add; 832 833 rc = acpi_bus_register_driver(ibm->acpi->driver); 834 if (rc < 0) { 835 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 836 ibm->name, rc); 837 kfree(ibm->acpi->driver); 838 ibm->acpi->driver = NULL; 839 } else if (!rc) 840 ibm->flags.acpi_driver_registered = 1; 841 842 return rc; 843 } 844 845 846 /**************************************************************************** 847 **************************************************************************** 848 * 849 * Procfs Helpers 850 * 851 **************************************************************************** 852 ****************************************************************************/ 853 854 static int dispatch_proc_show(struct seq_file *m, void *v) 855 { 856 struct ibm_struct *ibm = m->private; 857 858 if (!ibm || !ibm->read) 859 return -EINVAL; 860 return ibm->read(m); 861 } 862 863 static int dispatch_proc_open(struct inode *inode, struct file *file) 864 { 865 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 866 } 867 868 static ssize_t dispatch_proc_write(struct file *file, 869 const char __user *userbuf, 870 size_t count, loff_t *pos) 871 { 872 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 873 char *kernbuf; 874 int ret; 875 876 if (!ibm || !ibm->write) 877 return -EINVAL; 878 if (count > PAGE_SIZE - 2) 879 return -EINVAL; 880 881 kernbuf = kmalloc(count + 2, GFP_KERNEL); 882 if (!kernbuf) 883 return -ENOMEM; 884 885 if (copy_from_user(kernbuf, userbuf, count)) { 886 kfree(kernbuf); 887 return -EFAULT; 888 } 889 890 kernbuf[count] = 0; 891 strcat(kernbuf, ","); 892 ret = ibm->write(kernbuf); 893 if (ret == 0) 894 ret = count; 895 896 kfree(kernbuf); 897 898 return ret; 899 } 900 901 static const struct file_operations dispatch_proc_fops = { 902 .owner = THIS_MODULE, 903 .open = dispatch_proc_open, 904 .read = seq_read, 905 .llseek = seq_lseek, 906 .release = single_release, 907 .write = dispatch_proc_write, 908 }; 909 910 static char *next_cmd(char **cmds) 911 { 912 char *start = *cmds; 913 char *end; 914 915 while ((end = strchr(start, ',')) && end == start) 916 start = end + 1; 917 918 if (!end) 919 return NULL; 920 921 *end = 0; 922 *cmds = end + 1; 923 return start; 924 } 925 926 927 /**************************************************************************** 928 **************************************************************************** 929 * 930 * Device model: input, hwmon and platform 931 * 932 **************************************************************************** 933 ****************************************************************************/ 934 935 static struct platform_device *tpacpi_pdev; 936 static struct platform_device *tpacpi_sensors_pdev; 937 static struct device *tpacpi_hwmon; 938 static struct input_dev *tpacpi_inputdev; 939 static struct mutex tpacpi_inputdev_send_mutex; 940 static LIST_HEAD(tpacpi_all_drivers); 941 942 #ifdef CONFIG_PM_SLEEP 943 static int tpacpi_suspend_handler(struct device *dev) 944 { 945 struct ibm_struct *ibm, *itmp; 946 947 list_for_each_entry_safe(ibm, itmp, 948 &tpacpi_all_drivers, 949 all_drivers) { 950 if (ibm->suspend) 951 (ibm->suspend)(); 952 } 953 954 return 0; 955 } 956 957 static int tpacpi_resume_handler(struct device *dev) 958 { 959 struct ibm_struct *ibm, *itmp; 960 961 list_for_each_entry_safe(ibm, itmp, 962 &tpacpi_all_drivers, 963 all_drivers) { 964 if (ibm->resume) 965 (ibm->resume)(); 966 } 967 968 return 0; 969 } 970 #endif 971 972 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 973 tpacpi_suspend_handler, tpacpi_resume_handler); 974 975 static void tpacpi_shutdown_handler(struct platform_device *pdev) 976 { 977 struct ibm_struct *ibm, *itmp; 978 979 list_for_each_entry_safe(ibm, itmp, 980 &tpacpi_all_drivers, 981 all_drivers) { 982 if (ibm->shutdown) 983 (ibm->shutdown)(); 984 } 985 } 986 987 static struct platform_driver tpacpi_pdriver = { 988 .driver = { 989 .name = TPACPI_DRVR_NAME, 990 .pm = &tpacpi_pm, 991 }, 992 .shutdown = tpacpi_shutdown_handler, 993 }; 994 995 static struct platform_driver tpacpi_hwmon_pdriver = { 996 .driver = { 997 .name = TPACPI_HWMON_DRVR_NAME, 998 }, 999 }; 1000 1001 /************************************************************************* 1002 * sysfs support helpers 1003 */ 1004 1005 struct attribute_set { 1006 unsigned int members, max_members; 1007 struct attribute_group group; 1008 }; 1009 1010 struct attribute_set_obj { 1011 struct attribute_set s; 1012 struct attribute *a; 1013 } __attribute__((packed)); 1014 1015 static struct attribute_set *create_attr_set(unsigned int max_members, 1016 const char *name) 1017 { 1018 struct attribute_set_obj *sobj; 1019 1020 if (max_members == 0) 1021 return NULL; 1022 1023 /* Allocates space for implicit NULL at the end too */ 1024 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1025 max_members * sizeof(struct attribute *), 1026 GFP_KERNEL); 1027 if (!sobj) 1028 return NULL; 1029 sobj->s.max_members = max_members; 1030 sobj->s.group.attrs = &sobj->a; 1031 sobj->s.group.name = name; 1032 1033 return &sobj->s; 1034 } 1035 1036 #define destroy_attr_set(_set) \ 1037 kfree(_set); 1038 1039 /* not multi-threaded safe, use it in a single thread per set */ 1040 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1041 { 1042 if (!s || !attr) 1043 return -EINVAL; 1044 1045 if (s->members >= s->max_members) 1046 return -ENOMEM; 1047 1048 s->group.attrs[s->members] = attr; 1049 s->members++; 1050 1051 return 0; 1052 } 1053 1054 static int add_many_to_attr_set(struct attribute_set *s, 1055 struct attribute **attr, 1056 unsigned int count) 1057 { 1058 int i, res; 1059 1060 for (i = 0; i < count; i++) { 1061 res = add_to_attr_set(s, attr[i]); 1062 if (res) 1063 return res; 1064 } 1065 1066 return 0; 1067 } 1068 1069 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1070 { 1071 sysfs_remove_group(kobj, &s->group); 1072 destroy_attr_set(s); 1073 } 1074 1075 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1076 sysfs_create_group(_kobj, &_attr_set->group) 1077 1078 static int parse_strtoul(const char *buf, 1079 unsigned long max, unsigned long *value) 1080 { 1081 char *endp; 1082 1083 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1084 endp = skip_spaces(endp); 1085 if (*endp || *value > max) 1086 return -EINVAL; 1087 1088 return 0; 1089 } 1090 1091 static void tpacpi_disable_brightness_delay(void) 1092 { 1093 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1094 pr_notice("ACPI backlight control delay disabled\n"); 1095 } 1096 1097 static void printk_deprecated_attribute(const char * const what, 1098 const char * const details) 1099 { 1100 tpacpi_log_usertask("deprecated sysfs attribute"); 1101 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1102 what, details); 1103 } 1104 1105 /************************************************************************* 1106 * rfkill and radio control support helpers 1107 */ 1108 1109 /* 1110 * ThinkPad-ACPI firmware handling model: 1111 * 1112 * WLSW (master wireless switch) is event-driven, and is common to all 1113 * firmware-controlled radios. It cannot be controlled, just monitored, 1114 * as expected. It overrides all radio state in firmware 1115 * 1116 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1117 * (TODO: verify how WLSW interacts with the returned radio state). 1118 * 1119 * The only time there are shadow radio state changes, is when 1120 * masked-off hotkeys are used. 1121 */ 1122 1123 /* 1124 * Internal driver API for radio state: 1125 * 1126 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1127 * bool: true means radio blocked (off) 1128 */ 1129 enum tpacpi_rfkill_state { 1130 TPACPI_RFK_RADIO_OFF = 0, 1131 TPACPI_RFK_RADIO_ON 1132 }; 1133 1134 /* rfkill switches */ 1135 enum tpacpi_rfk_id { 1136 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1137 TPACPI_RFK_WWAN_SW_ID, 1138 TPACPI_RFK_UWB_SW_ID, 1139 TPACPI_RFK_SW_MAX 1140 }; 1141 1142 static const char *tpacpi_rfkill_names[] = { 1143 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1144 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1145 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1146 [TPACPI_RFK_SW_MAX] = NULL 1147 }; 1148 1149 /* ThinkPad-ACPI rfkill subdriver */ 1150 struct tpacpi_rfk { 1151 struct rfkill *rfkill; 1152 enum tpacpi_rfk_id id; 1153 const struct tpacpi_rfk_ops *ops; 1154 }; 1155 1156 struct tpacpi_rfk_ops { 1157 /* firmware interface */ 1158 int (*get_status)(void); 1159 int (*set_status)(const enum tpacpi_rfkill_state); 1160 }; 1161 1162 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1163 1164 /* Query FW and update rfkill sw state for a given rfkill switch */ 1165 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1166 { 1167 int status; 1168 1169 if (!tp_rfk) 1170 return -ENODEV; 1171 1172 status = (tp_rfk->ops->get_status)(); 1173 if (status < 0) 1174 return status; 1175 1176 rfkill_set_sw_state(tp_rfk->rfkill, 1177 (status == TPACPI_RFK_RADIO_OFF)); 1178 1179 return status; 1180 } 1181 1182 /* Query FW and update rfkill sw state for all rfkill switches */ 1183 static void tpacpi_rfk_update_swstate_all(void) 1184 { 1185 unsigned int i; 1186 1187 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1188 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1189 } 1190 1191 /* 1192 * Sync the HW-blocking state of all rfkill switches, 1193 * do notice it causes the rfkill core to schedule uevents 1194 */ 1195 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1196 { 1197 unsigned int i; 1198 struct tpacpi_rfk *tp_rfk; 1199 1200 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1201 tp_rfk = tpacpi_rfkill_switches[i]; 1202 if (tp_rfk) { 1203 if (rfkill_set_hw_state(tp_rfk->rfkill, 1204 blocked)) { 1205 /* ignore -- we track sw block */ 1206 } 1207 } 1208 } 1209 } 1210 1211 /* Call to get the WLSW state from the firmware */ 1212 static int hotkey_get_wlsw(void); 1213 1214 /* Call to query WLSW state and update all rfkill switches */ 1215 static bool tpacpi_rfk_check_hwblock_state(void) 1216 { 1217 int res = hotkey_get_wlsw(); 1218 int hw_blocked; 1219 1220 /* When unknown or unsupported, we have to assume it is unblocked */ 1221 if (res < 0) 1222 return false; 1223 1224 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1225 tpacpi_rfk_update_hwblock_state(hw_blocked); 1226 1227 return hw_blocked; 1228 } 1229 1230 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1231 { 1232 struct tpacpi_rfk *tp_rfk = data; 1233 int res; 1234 1235 dbg_printk(TPACPI_DBG_RFKILL, 1236 "request to change radio state to %s\n", 1237 blocked ? "blocked" : "unblocked"); 1238 1239 /* try to set radio state */ 1240 res = (tp_rfk->ops->set_status)(blocked ? 1241 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1242 1243 /* and update the rfkill core with whatever the FW really did */ 1244 tpacpi_rfk_update_swstate(tp_rfk); 1245 1246 return (res < 0) ? res : 0; 1247 } 1248 1249 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1250 .set_block = tpacpi_rfk_hook_set_block, 1251 }; 1252 1253 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1254 const struct tpacpi_rfk_ops *tp_rfkops, 1255 const enum rfkill_type rfktype, 1256 const char *name, 1257 const bool set_default) 1258 { 1259 struct tpacpi_rfk *atp_rfk; 1260 int res; 1261 bool sw_state = false; 1262 bool hw_state; 1263 int sw_status; 1264 1265 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1266 1267 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1268 if (atp_rfk) 1269 atp_rfk->rfkill = rfkill_alloc(name, 1270 &tpacpi_pdev->dev, 1271 rfktype, 1272 &tpacpi_rfk_rfkill_ops, 1273 atp_rfk); 1274 if (!atp_rfk || !atp_rfk->rfkill) { 1275 pr_err("failed to allocate memory for rfkill class\n"); 1276 kfree(atp_rfk); 1277 return -ENOMEM; 1278 } 1279 1280 atp_rfk->id = id; 1281 atp_rfk->ops = tp_rfkops; 1282 1283 sw_status = (tp_rfkops->get_status)(); 1284 if (sw_status < 0) { 1285 pr_err("failed to read initial state for %s, error %d\n", 1286 name, sw_status); 1287 } else { 1288 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1289 if (set_default) { 1290 /* try to keep the initial state, since we ask the 1291 * firmware to preserve it across S5 in NVRAM */ 1292 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1293 } 1294 } 1295 hw_state = tpacpi_rfk_check_hwblock_state(); 1296 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1297 1298 res = rfkill_register(atp_rfk->rfkill); 1299 if (res < 0) { 1300 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1301 rfkill_destroy(atp_rfk->rfkill); 1302 kfree(atp_rfk); 1303 return res; 1304 } 1305 1306 tpacpi_rfkill_switches[id] = atp_rfk; 1307 1308 pr_info("rfkill switch %s: radio is %sblocked\n", 1309 name, (sw_state || hw_state) ? "" : "un"); 1310 return 0; 1311 } 1312 1313 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1314 { 1315 struct tpacpi_rfk *tp_rfk; 1316 1317 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1318 1319 tp_rfk = tpacpi_rfkill_switches[id]; 1320 if (tp_rfk) { 1321 rfkill_unregister(tp_rfk->rfkill); 1322 rfkill_destroy(tp_rfk->rfkill); 1323 tpacpi_rfkill_switches[id] = NULL; 1324 kfree(tp_rfk); 1325 } 1326 } 1327 1328 static void printk_deprecated_rfkill_attribute(const char * const what) 1329 { 1330 printk_deprecated_attribute(what, 1331 "Please switch to generic rfkill before year 2010"); 1332 } 1333 1334 /* sysfs <radio> enable ------------------------------------------------ */ 1335 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1336 struct device_attribute *attr, 1337 char *buf) 1338 { 1339 int status; 1340 1341 printk_deprecated_rfkill_attribute(attr->attr.name); 1342 1343 /* This is in the ABI... */ 1344 if (tpacpi_rfk_check_hwblock_state()) { 1345 status = TPACPI_RFK_RADIO_OFF; 1346 } else { 1347 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1348 if (status < 0) 1349 return status; 1350 } 1351 1352 return snprintf(buf, PAGE_SIZE, "%d\n", 1353 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1354 } 1355 1356 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1357 struct device_attribute *attr, 1358 const char *buf, size_t count) 1359 { 1360 unsigned long t; 1361 int res; 1362 1363 printk_deprecated_rfkill_attribute(attr->attr.name); 1364 1365 if (parse_strtoul(buf, 1, &t)) 1366 return -EINVAL; 1367 1368 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1369 1370 /* This is in the ABI... */ 1371 if (tpacpi_rfk_check_hwblock_state() && !!t) 1372 return -EPERM; 1373 1374 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1375 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1376 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1377 1378 return (res < 0) ? res : count; 1379 } 1380 1381 /* procfs -------------------------------------------------------------- */ 1382 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1383 { 1384 if (id >= TPACPI_RFK_SW_MAX) 1385 seq_printf(m, "status:\t\tnot supported\n"); 1386 else { 1387 int status; 1388 1389 /* This is in the ABI... */ 1390 if (tpacpi_rfk_check_hwblock_state()) { 1391 status = TPACPI_RFK_RADIO_OFF; 1392 } else { 1393 status = tpacpi_rfk_update_swstate( 1394 tpacpi_rfkill_switches[id]); 1395 if (status < 0) 1396 return status; 1397 } 1398 1399 seq_printf(m, "status:\t\t%s\n", 1400 (status == TPACPI_RFK_RADIO_ON) ? 1401 "enabled" : "disabled"); 1402 seq_printf(m, "commands:\tenable, disable\n"); 1403 } 1404 1405 return 0; 1406 } 1407 1408 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1409 { 1410 char *cmd; 1411 int status = -1; 1412 int res = 0; 1413 1414 if (id >= TPACPI_RFK_SW_MAX) 1415 return -ENODEV; 1416 1417 while ((cmd = next_cmd(&buf))) { 1418 if (strlencmp(cmd, "enable") == 0) 1419 status = TPACPI_RFK_RADIO_ON; 1420 else if (strlencmp(cmd, "disable") == 0) 1421 status = TPACPI_RFK_RADIO_OFF; 1422 else 1423 return -EINVAL; 1424 } 1425 1426 if (status != -1) { 1427 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1428 (status == TPACPI_RFK_RADIO_ON) ? 1429 "enable" : "disable", 1430 tpacpi_rfkill_names[id]); 1431 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1432 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1433 } 1434 1435 return res; 1436 } 1437 1438 /************************************************************************* 1439 * thinkpad-acpi driver attributes 1440 */ 1441 1442 /* interface_version --------------------------------------------------- */ 1443 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1444 { 1445 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1446 } 1447 static DRIVER_ATTR_RO(interface_version); 1448 1449 /* debug_level --------------------------------------------------------- */ 1450 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1451 { 1452 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1453 } 1454 1455 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1456 size_t count) 1457 { 1458 unsigned long t; 1459 1460 if (parse_strtoul(buf, 0xffff, &t)) 1461 return -EINVAL; 1462 1463 dbg_level = t; 1464 1465 return count; 1466 } 1467 static DRIVER_ATTR_RW(debug_level); 1468 1469 /* version ------------------------------------------------------------- */ 1470 static ssize_t version_show(struct device_driver *drv, char *buf) 1471 { 1472 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1473 TPACPI_DESC, TPACPI_VERSION); 1474 } 1475 static DRIVER_ATTR_RO(version); 1476 1477 /* --------------------------------------------------------------------- */ 1478 1479 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1480 1481 /* wlsw_emulstate ------------------------------------------------------ */ 1482 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1483 { 1484 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1485 } 1486 1487 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1488 size_t count) 1489 { 1490 unsigned long t; 1491 1492 if (parse_strtoul(buf, 1, &t)) 1493 return -EINVAL; 1494 1495 if (tpacpi_wlsw_emulstate != !!t) { 1496 tpacpi_wlsw_emulstate = !!t; 1497 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1498 } 1499 1500 return count; 1501 } 1502 static DRIVER_ATTR_RW(wlsw_emulstate); 1503 1504 /* bluetooth_emulstate ------------------------------------------------- */ 1505 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1506 { 1507 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1508 } 1509 1510 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1511 const char *buf, size_t count) 1512 { 1513 unsigned long t; 1514 1515 if (parse_strtoul(buf, 1, &t)) 1516 return -EINVAL; 1517 1518 tpacpi_bluetooth_emulstate = !!t; 1519 1520 return count; 1521 } 1522 static DRIVER_ATTR_RW(bluetooth_emulstate); 1523 1524 /* wwan_emulstate ------------------------------------------------- */ 1525 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1526 { 1527 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1528 } 1529 1530 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1531 size_t count) 1532 { 1533 unsigned long t; 1534 1535 if (parse_strtoul(buf, 1, &t)) 1536 return -EINVAL; 1537 1538 tpacpi_wwan_emulstate = !!t; 1539 1540 return count; 1541 } 1542 static DRIVER_ATTR_RW(wwan_emulstate); 1543 1544 /* uwb_emulstate ------------------------------------------------- */ 1545 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1546 { 1547 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1548 } 1549 1550 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1551 size_t count) 1552 { 1553 unsigned long t; 1554 1555 if (parse_strtoul(buf, 1, &t)) 1556 return -EINVAL; 1557 1558 tpacpi_uwb_emulstate = !!t; 1559 1560 return count; 1561 } 1562 static DRIVER_ATTR_RW(uwb_emulstate); 1563 #endif 1564 1565 /* --------------------------------------------------------------------- */ 1566 1567 static struct driver_attribute *tpacpi_driver_attributes[] = { 1568 &driver_attr_debug_level, &driver_attr_version, 1569 &driver_attr_interface_version, 1570 }; 1571 1572 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1573 { 1574 int i, res; 1575 1576 i = 0; 1577 res = 0; 1578 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1579 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1580 i++; 1581 } 1582 1583 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1584 if (!res && dbg_wlswemul) 1585 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1586 if (!res && dbg_bluetoothemul) 1587 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1588 if (!res && dbg_wwanemul) 1589 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1590 if (!res && dbg_uwbemul) 1591 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1592 #endif 1593 1594 return res; 1595 } 1596 1597 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1598 { 1599 int i; 1600 1601 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1602 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1603 1604 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1605 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1606 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1607 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1608 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1609 #endif 1610 } 1611 1612 /************************************************************************* 1613 * Firmware Data 1614 */ 1615 1616 /* 1617 * Table of recommended minimum BIOS versions 1618 * 1619 * Reasons for listing: 1620 * 1. Stable BIOS, listed because the unknown amount of 1621 * bugs and bad ACPI behaviour on older versions 1622 * 1623 * 2. BIOS or EC fw with known bugs that trigger on Linux 1624 * 1625 * 3. BIOS with known reduced functionality in older versions 1626 * 1627 * We recommend the latest BIOS and EC version. 1628 * We only support the latest BIOS and EC fw version as a rule. 1629 * 1630 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1631 * Information from users in ThinkWiki 1632 * 1633 * WARNING: we use this table also to detect that the machine is 1634 * a ThinkPad in some cases, so don't remove entries lightly. 1635 */ 1636 1637 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1638 { .vendor = (__v), \ 1639 .bios = TPID(__id1, __id2), \ 1640 .ec = TPACPI_MATCH_ANY, \ 1641 .quirks = TPACPI_MATCH_ANY << 16 \ 1642 | (__bv1) << 8 | (__bv2) } 1643 1644 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1645 __eid, __ev1, __ev2) \ 1646 { .vendor = (__v), \ 1647 .bios = TPID(__bid1, __bid2), \ 1648 .ec = __eid, \ 1649 .quirks = (__ev1) << 24 | (__ev2) << 16 \ 1650 | (__bv1) << 8 | (__bv2) } 1651 1652 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1653 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1654 1655 /* Outdated IBM BIOSes often lack the EC id string */ 1656 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1657 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1658 __bv1, __bv2, TPID(__id1, __id2), \ 1659 __ev1, __ev2), \ 1660 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1661 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1662 __ev1, __ev2) 1663 1664 /* Outdated IBM BIOSes often lack the EC id string */ 1665 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1666 __eid1, __eid2, __ev1, __ev2) \ 1667 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1668 __bv1, __bv2, TPID(__eid1, __eid2), \ 1669 __ev1, __ev2), \ 1670 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1671 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1672 __ev1, __ev2) 1673 1674 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1675 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1676 1677 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1678 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1679 __bv1, __bv2, TPID(__id1, __id2), \ 1680 __ev1, __ev2) 1681 1682 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1683 __eid1, __eid2, __ev1, __ev2) \ 1684 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1685 __bv1, __bv2, TPID(__eid1, __eid2), \ 1686 __ev1, __ev2) 1687 1688 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1689 /* Numeric models ------------------ */ 1690 /* FW MODEL BIOS VERS */ 1691 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1692 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1693 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1694 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1695 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1696 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1697 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1698 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1699 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1700 1701 /* A-series ------------------------- */ 1702 /* FW MODEL BIOS VERS EC VERS */ 1703 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1704 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1705 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1706 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1707 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1708 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1709 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1710 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1711 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1712 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1713 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1714 1715 /* G-series ------------------------- */ 1716 /* FW MODEL BIOS VERS */ 1717 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1718 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1719 1720 /* R-series, T-series --------------- */ 1721 /* FW MODEL BIOS VERS EC VERS */ 1722 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1723 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1724 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1725 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1726 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1727 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1728 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1729 T40/p, T41/p, T42/p (1) */ 1730 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1731 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1732 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1733 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1734 1735 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1736 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1737 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1738 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1739 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1740 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1741 1742 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1743 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1744 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1745 1746 /* BIOS FW BIOS VERS EC FW EC VERS */ 1747 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1748 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1749 1750 /* X-series ------------------------- */ 1751 /* FW MODEL BIOS VERS EC VERS */ 1752 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1753 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1754 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1755 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1756 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1757 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1758 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1759 1760 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1761 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1762 1763 /* (0) - older versions lack DMI EC fw string and functionality */ 1764 /* (1) - older versions known to lack functionality */ 1765 }; 1766 1767 #undef TPV_QL1 1768 #undef TPV_QL0 1769 #undef TPV_QI2 1770 #undef TPV_QI1 1771 #undef TPV_QI0 1772 #undef TPV_Q_X 1773 #undef TPV_Q 1774 1775 static void __init tpacpi_check_outdated_fw(void) 1776 { 1777 unsigned long fwvers; 1778 u16 ec_version, bios_version; 1779 1780 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1781 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1782 1783 if (!fwvers) 1784 return; 1785 1786 bios_version = fwvers & 0xffffU; 1787 ec_version = (fwvers >> 16) & 0xffffU; 1788 1789 /* note that unknown versions are set to 0x0000 and we use that */ 1790 if ((bios_version > thinkpad_id.bios_release) || 1791 (ec_version > thinkpad_id.ec_release && 1792 ec_version != TPACPI_MATCH_ANY)) { 1793 /* 1794 * The changelogs would let us track down the exact 1795 * reason, but it is just too much of a pain to track 1796 * it. We only list BIOSes that are either really 1797 * broken, or really stable to begin with, so it is 1798 * best if the user upgrades the firmware anyway. 1799 */ 1800 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1801 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1802 } 1803 } 1804 1805 static bool __init tpacpi_is_fw_known(void) 1806 { 1807 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1808 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1809 } 1810 1811 /**************************************************************************** 1812 **************************************************************************** 1813 * 1814 * Subdrivers 1815 * 1816 **************************************************************************** 1817 ****************************************************************************/ 1818 1819 /************************************************************************* 1820 * thinkpad-acpi metadata subdriver 1821 */ 1822 1823 static int thinkpad_acpi_driver_read(struct seq_file *m) 1824 { 1825 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1826 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1827 return 0; 1828 } 1829 1830 static struct ibm_struct thinkpad_acpi_driver_data = { 1831 .name = "driver", 1832 .read = thinkpad_acpi_driver_read, 1833 }; 1834 1835 /************************************************************************* 1836 * Hotkey subdriver 1837 */ 1838 1839 /* 1840 * ThinkPad firmware event model 1841 * 1842 * The ThinkPad firmware has two main event interfaces: normal ACPI 1843 * notifications (which follow the ACPI standard), and a private event 1844 * interface. 1845 * 1846 * The private event interface also issues events for the hotkeys. As 1847 * the driver gained features, the event handling code ended up being 1848 * built around the hotkey subdriver. This will need to be refactored 1849 * to a more formal event API eventually. 1850 * 1851 * Some "hotkeys" are actually supposed to be used as event reports, 1852 * such as "brightness has changed", "volume has changed", depending on 1853 * the ThinkPad model and how the firmware is operating. 1854 * 1855 * Unlike other classes, hotkey-class events have mask/unmask control on 1856 * non-ancient firmware. However, how it behaves changes a lot with the 1857 * firmware model and version. 1858 */ 1859 1860 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1861 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1862 TP_ACPI_HOTKEYSCAN_FNF2, 1863 TP_ACPI_HOTKEYSCAN_FNF3, 1864 TP_ACPI_HOTKEYSCAN_FNF4, 1865 TP_ACPI_HOTKEYSCAN_FNF5, 1866 TP_ACPI_HOTKEYSCAN_FNF6, 1867 TP_ACPI_HOTKEYSCAN_FNF7, 1868 TP_ACPI_HOTKEYSCAN_FNF8, 1869 TP_ACPI_HOTKEYSCAN_FNF9, 1870 TP_ACPI_HOTKEYSCAN_FNF10, 1871 TP_ACPI_HOTKEYSCAN_FNF11, 1872 TP_ACPI_HOTKEYSCAN_FNF12, 1873 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1874 TP_ACPI_HOTKEYSCAN_FNINSERT, 1875 TP_ACPI_HOTKEYSCAN_FNDELETE, 1876 TP_ACPI_HOTKEYSCAN_FNHOME, 1877 TP_ACPI_HOTKEYSCAN_FNEND, 1878 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1879 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1880 TP_ACPI_HOTKEYSCAN_FNSPACE, 1881 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1882 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1883 TP_ACPI_HOTKEYSCAN_MUTE, 1884 TP_ACPI_HOTKEYSCAN_THINKPAD, 1885 TP_ACPI_HOTKEYSCAN_UNK1, 1886 TP_ACPI_HOTKEYSCAN_UNK2, 1887 TP_ACPI_HOTKEYSCAN_UNK3, 1888 TP_ACPI_HOTKEYSCAN_UNK4, 1889 TP_ACPI_HOTKEYSCAN_UNK5, 1890 TP_ACPI_HOTKEYSCAN_UNK6, 1891 TP_ACPI_HOTKEYSCAN_UNK7, 1892 TP_ACPI_HOTKEYSCAN_UNK8, 1893 1894 /* Adaptive keyboard keycodes */ 1895 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1896 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1897 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1898 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1899 TP_ACPI_HOTKEYSCAN_CLOUD, 1900 TP_ACPI_HOTKEYSCAN_UNK9, 1901 TP_ACPI_HOTKEYSCAN_VOICE, 1902 TP_ACPI_HOTKEYSCAN_UNK10, 1903 TP_ACPI_HOTKEYSCAN_GESTURES, 1904 TP_ACPI_HOTKEYSCAN_UNK11, 1905 TP_ACPI_HOTKEYSCAN_UNK12, 1906 TP_ACPI_HOTKEYSCAN_UNK13, 1907 TP_ACPI_HOTKEYSCAN_CONFIG, 1908 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1909 TP_ACPI_HOTKEYSCAN_RELOAD, 1910 TP_ACPI_HOTKEYSCAN_BACK, 1911 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1912 TP_ACPI_HOTKEYSCAN_MIC_UP, 1913 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1914 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1915 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1916 1917 /* Lenovo extended keymap, starting at 0x1300 */ 1918 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1919 /* first new observed key (star, favorites) is 0x1311 */ 1920 TP_ACPI_HOTKEYSCAN_STAR = 69, 1921 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1922 TP_ACPI_HOTKEYSCAN_UNK25, 1923 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1924 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1925 1926 /* Hotkey keymap size */ 1927 TPACPI_HOTKEY_MAP_LEN 1928 }; 1929 1930 enum { /* Keys/events available through NVRAM polling */ 1931 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1932 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1933 }; 1934 1935 enum { /* Positions of some of the keys in hotkey masks */ 1936 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1937 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1938 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1939 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1940 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1941 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1942 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1943 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1944 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1945 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1946 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1947 }; 1948 1949 enum { /* NVRAM to ACPI HKEY group map */ 1950 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1951 TP_ACPI_HKEY_ZOOM_MASK | 1952 TP_ACPI_HKEY_DISPSWTCH_MASK | 1953 TP_ACPI_HKEY_HIBERNATE_MASK, 1954 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1955 TP_ACPI_HKEY_BRGHTDWN_MASK, 1956 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1957 TP_ACPI_HKEY_VOLDWN_MASK | 1958 TP_ACPI_HKEY_MUTE_MASK, 1959 }; 1960 1961 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1962 struct tp_nvram_state { 1963 u16 thinkpad_toggle:1; 1964 u16 zoom_toggle:1; 1965 u16 display_toggle:1; 1966 u16 thinklight_toggle:1; 1967 u16 hibernate_toggle:1; 1968 u16 displayexp_toggle:1; 1969 u16 display_state:1; 1970 u16 brightness_toggle:1; 1971 u16 volume_toggle:1; 1972 u16 mute:1; 1973 1974 u8 brightness_level; 1975 u8 volume_level; 1976 }; 1977 1978 /* kthread for the hotkey poller */ 1979 static struct task_struct *tpacpi_hotkey_task; 1980 1981 /* 1982 * Acquire mutex to write poller control variables as an 1983 * atomic block. 1984 * 1985 * Increment hotkey_config_change when changing them if you 1986 * want the kthread to forget old state. 1987 * 1988 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1989 */ 1990 static struct mutex hotkey_thread_data_mutex; 1991 static unsigned int hotkey_config_change; 1992 1993 /* 1994 * hotkey poller control variables 1995 * 1996 * Must be atomic or readers will also need to acquire mutex 1997 * 1998 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1999 * should be used only when the changes need to be taken as 2000 * a block, OR when one needs to force the kthread to forget 2001 * old state. 2002 */ 2003 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2004 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2005 2006 #define HOTKEY_CONFIG_CRITICAL_START \ 2007 do { \ 2008 mutex_lock(&hotkey_thread_data_mutex); \ 2009 hotkey_config_change++; \ 2010 } while (0); 2011 #define HOTKEY_CONFIG_CRITICAL_END \ 2012 mutex_unlock(&hotkey_thread_data_mutex); 2013 2014 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2015 2016 #define hotkey_source_mask 0U 2017 #define HOTKEY_CONFIG_CRITICAL_START 2018 #define HOTKEY_CONFIG_CRITICAL_END 2019 2020 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2021 2022 static struct mutex hotkey_mutex; 2023 2024 static enum { /* Reasons for waking up */ 2025 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2026 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2027 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2028 } hotkey_wakeup_reason; 2029 2030 static int hotkey_autosleep_ack; 2031 2032 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2033 static u32 hotkey_all_mask; /* all events supported in fw */ 2034 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2035 static u32 hotkey_reserved_mask; /* events better left disabled */ 2036 static u32 hotkey_driver_mask; /* events needed by the driver */ 2037 static u32 hotkey_user_mask; /* events visible to userspace */ 2038 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2039 2040 static u16 *hotkey_keycode_map; 2041 2042 static struct attribute_set *hotkey_dev_attributes; 2043 2044 static void tpacpi_driver_event(const unsigned int hkey_event); 2045 static void hotkey_driver_event(const unsigned int scancode); 2046 static void hotkey_poll_setup(const bool may_warn); 2047 2048 /* HKEY.MHKG() return bits */ 2049 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2050 enum { 2051 TP_ACPI_MULTI_MODE_INVALID = 0, 2052 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2053 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2054 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2055 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2056 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2057 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2058 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2059 }; 2060 2061 enum { 2062 /* The following modes are considered tablet mode for the purpose of 2063 * reporting the status to userspace. i.e. in all these modes it makes 2064 * sense to disable the laptop input devices such as touchpad and 2065 * keyboard. 2066 */ 2067 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2068 TP_ACPI_MULTI_MODE_STAND | 2069 TP_ACPI_MULTI_MODE_TENT | 2070 TP_ACPI_MULTI_MODE_STAND_TENT, 2071 }; 2072 2073 static int hotkey_get_wlsw(void) 2074 { 2075 int status; 2076 2077 if (!tp_features.hotkey_wlsw) 2078 return -ENODEV; 2079 2080 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2081 if (dbg_wlswemul) 2082 return (tpacpi_wlsw_emulstate) ? 2083 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2084 #endif 2085 2086 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2087 return -EIO; 2088 2089 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2090 } 2091 2092 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2093 { 2094 int type = (s >> 16) & 0xffff; 2095 int value = s & 0xffff; 2096 int mode = TP_ACPI_MULTI_MODE_INVALID; 2097 int valid_modes = 0; 2098 2099 if (has_tablet_mode) 2100 *has_tablet_mode = 0; 2101 2102 switch (type) { 2103 case 1: 2104 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2105 TP_ACPI_MULTI_MODE_TABLET | 2106 TP_ACPI_MULTI_MODE_STAND_TENT; 2107 break; 2108 case 2: 2109 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2110 TP_ACPI_MULTI_MODE_FLAT | 2111 TP_ACPI_MULTI_MODE_TABLET | 2112 TP_ACPI_MULTI_MODE_STAND | 2113 TP_ACPI_MULTI_MODE_TENT; 2114 break; 2115 case 3: 2116 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2117 TP_ACPI_MULTI_MODE_FLAT; 2118 break; 2119 case 4: 2120 case 5: 2121 /* In mode 4, FLAT is not specified as a valid mode. However, 2122 * it can be seen at least on the X1 Yoga 2nd Generation. 2123 */ 2124 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2125 TP_ACPI_MULTI_MODE_FLAT | 2126 TP_ACPI_MULTI_MODE_TABLET | 2127 TP_ACPI_MULTI_MODE_STAND | 2128 TP_ACPI_MULTI_MODE_TENT; 2129 break; 2130 default: 2131 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2132 type, value, TPACPI_MAIL); 2133 return 0; 2134 } 2135 2136 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2137 *has_tablet_mode = 1; 2138 2139 switch (value) { 2140 case 1: 2141 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2142 break; 2143 case 2: 2144 mode = TP_ACPI_MULTI_MODE_FLAT; 2145 break; 2146 case 3: 2147 mode = TP_ACPI_MULTI_MODE_TABLET; 2148 break; 2149 case 4: 2150 if (type == 1) 2151 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2152 else 2153 mode = TP_ACPI_MULTI_MODE_STAND; 2154 break; 2155 case 5: 2156 mode = TP_ACPI_MULTI_MODE_TENT; 2157 break; 2158 default: 2159 if (type == 5 && value == 0xffff) { 2160 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2161 return 0; 2162 } 2163 } 2164 2165 if (!(mode & valid_modes)) { 2166 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2167 value, type, TPACPI_MAIL); 2168 return 0; 2169 } 2170 2171 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2172 } 2173 2174 static int hotkey_get_tablet_mode(int *status) 2175 { 2176 int s; 2177 2178 switch (tp_features.hotkey_tablet) { 2179 case TP_HOTKEY_TABLET_USES_MHKG: 2180 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2181 return -EIO; 2182 2183 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2184 break; 2185 case TP_HOTKEY_TABLET_USES_GMMS: 2186 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2187 return -EIO; 2188 2189 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2190 break; 2191 default: 2192 break; 2193 } 2194 2195 return 0; 2196 } 2197 2198 /* 2199 * Reads current event mask from firmware, and updates 2200 * hotkey_acpi_mask accordingly. Also resets any bits 2201 * from hotkey_user_mask that are unavailable to be 2202 * delivered (shadow requirement of the userspace ABI). 2203 * 2204 * Call with hotkey_mutex held 2205 */ 2206 static int hotkey_mask_get(void) 2207 { 2208 if (tp_features.hotkey_mask) { 2209 u32 m = 0; 2210 2211 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2212 return -EIO; 2213 2214 hotkey_acpi_mask = m; 2215 } else { 2216 /* no mask support doesn't mean no event support... */ 2217 hotkey_acpi_mask = hotkey_all_mask; 2218 } 2219 2220 /* sync userspace-visible mask */ 2221 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2222 2223 return 0; 2224 } 2225 2226 static void hotkey_mask_warn_incomplete_mask(void) 2227 { 2228 /* log only what the user can fix... */ 2229 const u32 wantedmask = hotkey_driver_mask & 2230 ~(hotkey_acpi_mask | hotkey_source_mask) & 2231 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2232 2233 if (wantedmask) 2234 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2235 } 2236 2237 /* 2238 * Set the firmware mask when supported 2239 * 2240 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2241 * 2242 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2243 * 2244 * Call with hotkey_mutex held 2245 */ 2246 static int hotkey_mask_set(u32 mask) 2247 { 2248 int i; 2249 int rc = 0; 2250 2251 const u32 fwmask = mask & ~hotkey_source_mask; 2252 2253 if (tp_features.hotkey_mask) { 2254 for (i = 0; i < 32; i++) { 2255 if (!acpi_evalf(hkey_handle, 2256 NULL, "MHKM", "vdd", i + 1, 2257 !!(mask & (1 << i)))) { 2258 rc = -EIO; 2259 break; 2260 } 2261 } 2262 } 2263 2264 /* 2265 * We *must* make an inconditional call to hotkey_mask_get to 2266 * refresh hotkey_acpi_mask and update hotkey_user_mask 2267 * 2268 * Take the opportunity to also log when we cannot _enable_ 2269 * a given event. 2270 */ 2271 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2272 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2273 fwmask, hotkey_acpi_mask); 2274 } 2275 2276 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2277 hotkey_mask_warn_incomplete_mask(); 2278 2279 return rc; 2280 } 2281 2282 /* 2283 * Sets hotkey_user_mask and tries to set the firmware mask 2284 * 2285 * Call with hotkey_mutex held 2286 */ 2287 static int hotkey_user_mask_set(const u32 mask) 2288 { 2289 int rc; 2290 2291 /* Give people a chance to notice they are doing something that 2292 * is bound to go boom on their users sooner or later */ 2293 if (!tp_warned.hotkey_mask_ff && 2294 (mask == 0xffff || mask == 0xffffff || 2295 mask == 0xffffffff)) { 2296 tp_warned.hotkey_mask_ff = 1; 2297 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2298 mask); 2299 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2300 } 2301 2302 /* Try to enable what the user asked for, plus whatever we need. 2303 * this syncs everything but won't enable bits in hotkey_user_mask */ 2304 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2305 2306 /* Enable the available bits in hotkey_user_mask */ 2307 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2308 2309 return rc; 2310 } 2311 2312 /* 2313 * Sets the driver hotkey mask. 2314 * 2315 * Can be called even if the hotkey subdriver is inactive 2316 */ 2317 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2318 { 2319 int rc; 2320 2321 /* Do the right thing if hotkey_init has not been called yet */ 2322 if (!tp_features.hotkey) { 2323 hotkey_driver_mask = mask; 2324 return 0; 2325 } 2326 2327 mutex_lock(&hotkey_mutex); 2328 2329 HOTKEY_CONFIG_CRITICAL_START 2330 hotkey_driver_mask = mask; 2331 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2332 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2333 #endif 2334 HOTKEY_CONFIG_CRITICAL_END 2335 2336 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2337 ~hotkey_source_mask); 2338 hotkey_poll_setup(true); 2339 2340 mutex_unlock(&hotkey_mutex); 2341 2342 return rc; 2343 } 2344 2345 static int hotkey_status_get(int *status) 2346 { 2347 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2348 return -EIO; 2349 2350 return 0; 2351 } 2352 2353 static int hotkey_status_set(bool enable) 2354 { 2355 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2356 return -EIO; 2357 2358 return 0; 2359 } 2360 2361 static void tpacpi_input_send_tabletsw(void) 2362 { 2363 int state; 2364 2365 if (tp_features.hotkey_tablet && 2366 !hotkey_get_tablet_mode(&state)) { 2367 mutex_lock(&tpacpi_inputdev_send_mutex); 2368 2369 input_report_switch(tpacpi_inputdev, 2370 SW_TABLET_MODE, !!state); 2371 input_sync(tpacpi_inputdev); 2372 2373 mutex_unlock(&tpacpi_inputdev_send_mutex); 2374 } 2375 } 2376 2377 /* Do NOT call without validating scancode first */ 2378 static void tpacpi_input_send_key(const unsigned int scancode) 2379 { 2380 const unsigned int keycode = hotkey_keycode_map[scancode]; 2381 2382 if (keycode != KEY_RESERVED) { 2383 mutex_lock(&tpacpi_inputdev_send_mutex); 2384 2385 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2386 input_report_key(tpacpi_inputdev, keycode, 1); 2387 input_sync(tpacpi_inputdev); 2388 2389 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2390 input_report_key(tpacpi_inputdev, keycode, 0); 2391 input_sync(tpacpi_inputdev); 2392 2393 mutex_unlock(&tpacpi_inputdev_send_mutex); 2394 } 2395 } 2396 2397 /* Do NOT call without validating scancode first */ 2398 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2399 { 2400 hotkey_driver_event(scancode); 2401 if (hotkey_user_mask & (1 << scancode)) 2402 tpacpi_input_send_key(scancode); 2403 } 2404 2405 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2406 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2407 2408 /* Do NOT call without validating scancode first */ 2409 static void tpacpi_hotkey_send_key(unsigned int scancode) 2410 { 2411 tpacpi_input_send_key_masked(scancode); 2412 } 2413 2414 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2415 { 2416 u8 d; 2417 2418 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2419 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2420 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2421 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2422 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2423 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2424 } 2425 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2426 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2427 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2428 } 2429 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2430 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2431 n->displayexp_toggle = 2432 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2433 } 2434 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2435 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2436 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2437 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2438 n->brightness_toggle = 2439 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2440 } 2441 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2442 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2443 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2444 >> TP_NVRAM_POS_LEVEL_VOLUME; 2445 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2446 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2447 } 2448 } 2449 2450 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2451 do { \ 2452 if ((event_mask & (1 << __scancode)) && \ 2453 oldn->__member != newn->__member) \ 2454 tpacpi_hotkey_send_key(__scancode); \ 2455 } while (0) 2456 2457 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2458 do { \ 2459 if (event_mask & (1 << __scancode)) \ 2460 tpacpi_hotkey_send_key(__scancode); \ 2461 } while (0) 2462 2463 static void issue_volchange(const unsigned int oldvol, 2464 const unsigned int newvol, 2465 const u32 event_mask) 2466 { 2467 unsigned int i = oldvol; 2468 2469 while (i > newvol) { 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2471 i--; 2472 } 2473 while (i < newvol) { 2474 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2475 i++; 2476 } 2477 } 2478 2479 static void issue_brightnesschange(const unsigned int oldbrt, 2480 const unsigned int newbrt, 2481 const u32 event_mask) 2482 { 2483 unsigned int i = oldbrt; 2484 2485 while (i > newbrt) { 2486 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2487 i--; 2488 } 2489 while (i < newbrt) { 2490 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2491 i++; 2492 } 2493 } 2494 2495 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2496 struct tp_nvram_state *newn, 2497 const u32 event_mask) 2498 { 2499 2500 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2501 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2502 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2503 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2504 2505 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2506 2507 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2508 2509 /* 2510 * Handle volume 2511 * 2512 * This code is supposed to duplicate the IBM firmware behaviour: 2513 * - Pressing MUTE issues mute hotkey message, even when already mute 2514 * - Pressing Volume up/down issues volume up/down hotkey messages, 2515 * even when already at maximum or minimum volume 2516 * - The act of unmuting issues volume up/down notification, 2517 * depending which key was used to unmute 2518 * 2519 * We are constrained to what the NVRAM can tell us, which is not much 2520 * and certainly not enough if more than one volume hotkey was pressed 2521 * since the last poll cycle. 2522 * 2523 * Just to make our life interesting, some newer Lenovo ThinkPads have 2524 * bugs in the BIOS and may fail to update volume_toggle properly. 2525 */ 2526 if (newn->mute) { 2527 /* muted */ 2528 if (!oldn->mute || 2529 oldn->volume_toggle != newn->volume_toggle || 2530 oldn->volume_level != newn->volume_level) { 2531 /* recently muted, or repeated mute keypress, or 2532 * multiple presses ending in mute */ 2533 issue_volchange(oldn->volume_level, newn->volume_level, 2534 event_mask); 2535 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2536 } 2537 } else { 2538 /* unmute */ 2539 if (oldn->mute) { 2540 /* recently unmuted, issue 'unmute' keypress */ 2541 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2542 } 2543 if (oldn->volume_level != newn->volume_level) { 2544 issue_volchange(oldn->volume_level, newn->volume_level, 2545 event_mask); 2546 } else if (oldn->volume_toggle != newn->volume_toggle) { 2547 /* repeated vol up/down keypress at end of scale ? */ 2548 if (newn->volume_level == 0) 2549 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2550 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2551 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2552 } 2553 } 2554 2555 /* handle brightness */ 2556 if (oldn->brightness_level != newn->brightness_level) { 2557 issue_brightnesschange(oldn->brightness_level, 2558 newn->brightness_level, event_mask); 2559 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2560 /* repeated key presses that didn't change state */ 2561 if (newn->brightness_level == 0) 2562 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2563 else if (newn->brightness_level >= bright_maxlvl 2564 && !tp_features.bright_unkfw) 2565 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2566 } 2567 2568 #undef TPACPI_COMPARE_KEY 2569 #undef TPACPI_MAY_SEND_KEY 2570 } 2571 2572 /* 2573 * Polling driver 2574 * 2575 * We track all events in hotkey_source_mask all the time, since 2576 * most of them are edge-based. We only issue those requested by 2577 * hotkey_user_mask or hotkey_driver_mask, though. 2578 */ 2579 static int hotkey_kthread(void *data) 2580 { 2581 struct tp_nvram_state s[2]; 2582 u32 poll_mask, event_mask; 2583 unsigned int si, so; 2584 unsigned long t; 2585 unsigned int change_detector; 2586 unsigned int poll_freq; 2587 bool was_frozen; 2588 2589 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2590 goto exit; 2591 2592 set_freezable(); 2593 2594 so = 0; 2595 si = 1; 2596 t = 0; 2597 2598 /* Initial state for compares */ 2599 mutex_lock(&hotkey_thread_data_mutex); 2600 change_detector = hotkey_config_change; 2601 poll_mask = hotkey_source_mask; 2602 event_mask = hotkey_source_mask & 2603 (hotkey_driver_mask | hotkey_user_mask); 2604 poll_freq = hotkey_poll_freq; 2605 mutex_unlock(&hotkey_thread_data_mutex); 2606 hotkey_read_nvram(&s[so], poll_mask); 2607 2608 while (!kthread_should_stop()) { 2609 if (t == 0) { 2610 if (likely(poll_freq)) 2611 t = 1000/poll_freq; 2612 else 2613 t = 100; /* should never happen... */ 2614 } 2615 t = msleep_interruptible(t); 2616 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2617 break; 2618 2619 if (t > 0 && !was_frozen) 2620 continue; 2621 2622 mutex_lock(&hotkey_thread_data_mutex); 2623 if (was_frozen || hotkey_config_change != change_detector) { 2624 /* forget old state on thaw or config change */ 2625 si = so; 2626 t = 0; 2627 change_detector = hotkey_config_change; 2628 } 2629 poll_mask = hotkey_source_mask; 2630 event_mask = hotkey_source_mask & 2631 (hotkey_driver_mask | hotkey_user_mask); 2632 poll_freq = hotkey_poll_freq; 2633 mutex_unlock(&hotkey_thread_data_mutex); 2634 2635 if (likely(poll_mask)) { 2636 hotkey_read_nvram(&s[si], poll_mask); 2637 if (likely(si != so)) { 2638 hotkey_compare_and_issue_event(&s[so], &s[si], 2639 event_mask); 2640 } 2641 } 2642 2643 so = si; 2644 si ^= 1; 2645 } 2646 2647 exit: 2648 return 0; 2649 } 2650 2651 /* call with hotkey_mutex held */ 2652 static void hotkey_poll_stop_sync(void) 2653 { 2654 if (tpacpi_hotkey_task) { 2655 kthread_stop(tpacpi_hotkey_task); 2656 tpacpi_hotkey_task = NULL; 2657 } 2658 } 2659 2660 /* call with hotkey_mutex held */ 2661 static void hotkey_poll_setup(const bool may_warn) 2662 { 2663 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2664 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2665 2666 if (hotkey_poll_freq > 0 && 2667 (poll_driver_mask || 2668 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2669 if (!tpacpi_hotkey_task) { 2670 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2671 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2672 if (IS_ERR(tpacpi_hotkey_task)) { 2673 tpacpi_hotkey_task = NULL; 2674 pr_err("could not create kernel thread for hotkey polling\n"); 2675 } 2676 } 2677 } else { 2678 hotkey_poll_stop_sync(); 2679 if (may_warn && (poll_driver_mask || poll_user_mask) && 2680 hotkey_poll_freq == 0) { 2681 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2682 poll_user_mask, poll_driver_mask); 2683 } 2684 } 2685 } 2686 2687 static void hotkey_poll_setup_safe(const bool may_warn) 2688 { 2689 mutex_lock(&hotkey_mutex); 2690 hotkey_poll_setup(may_warn); 2691 mutex_unlock(&hotkey_mutex); 2692 } 2693 2694 /* call with hotkey_mutex held */ 2695 static void hotkey_poll_set_freq(unsigned int freq) 2696 { 2697 if (!freq) 2698 hotkey_poll_stop_sync(); 2699 2700 hotkey_poll_freq = freq; 2701 } 2702 2703 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2704 2705 static void hotkey_poll_setup(const bool __unused) 2706 { 2707 } 2708 2709 static void hotkey_poll_setup_safe(const bool __unused) 2710 { 2711 } 2712 2713 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2714 2715 static int hotkey_inputdev_open(struct input_dev *dev) 2716 { 2717 switch (tpacpi_lifecycle) { 2718 case TPACPI_LIFE_INIT: 2719 case TPACPI_LIFE_RUNNING: 2720 hotkey_poll_setup_safe(false); 2721 return 0; 2722 case TPACPI_LIFE_EXITING: 2723 return -EBUSY; 2724 } 2725 2726 /* Should only happen if tpacpi_lifecycle is corrupt */ 2727 BUG(); 2728 return -EBUSY; 2729 } 2730 2731 static void hotkey_inputdev_close(struct input_dev *dev) 2732 { 2733 /* disable hotkey polling when possible */ 2734 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2735 !(hotkey_source_mask & hotkey_driver_mask)) 2736 hotkey_poll_setup_safe(false); 2737 } 2738 2739 /* sysfs hotkey enable ------------------------------------------------- */ 2740 static ssize_t hotkey_enable_show(struct device *dev, 2741 struct device_attribute *attr, 2742 char *buf) 2743 { 2744 int res, status; 2745 2746 printk_deprecated_attribute("hotkey_enable", 2747 "Hotkey reporting is always enabled"); 2748 2749 res = hotkey_status_get(&status); 2750 if (res) 2751 return res; 2752 2753 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2754 } 2755 2756 static ssize_t hotkey_enable_store(struct device *dev, 2757 struct device_attribute *attr, 2758 const char *buf, size_t count) 2759 { 2760 unsigned long t; 2761 2762 printk_deprecated_attribute("hotkey_enable", 2763 "Hotkeys can be disabled through hotkey_mask"); 2764 2765 if (parse_strtoul(buf, 1, &t)) 2766 return -EINVAL; 2767 2768 if (t == 0) 2769 return -EPERM; 2770 2771 return count; 2772 } 2773 2774 static DEVICE_ATTR_RW(hotkey_enable); 2775 2776 /* sysfs hotkey mask --------------------------------------------------- */ 2777 static ssize_t hotkey_mask_show(struct device *dev, 2778 struct device_attribute *attr, 2779 char *buf) 2780 { 2781 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2782 } 2783 2784 static ssize_t hotkey_mask_store(struct device *dev, 2785 struct device_attribute *attr, 2786 const char *buf, size_t count) 2787 { 2788 unsigned long t; 2789 int res; 2790 2791 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2792 return -EINVAL; 2793 2794 if (mutex_lock_killable(&hotkey_mutex)) 2795 return -ERESTARTSYS; 2796 2797 res = hotkey_user_mask_set(t); 2798 2799 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2800 hotkey_poll_setup(true); 2801 #endif 2802 2803 mutex_unlock(&hotkey_mutex); 2804 2805 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2806 2807 return (res) ? res : count; 2808 } 2809 2810 static DEVICE_ATTR_RW(hotkey_mask); 2811 2812 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2813 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2814 struct device_attribute *attr, 2815 char *buf) 2816 { 2817 return sprintf(buf, "0\n"); 2818 } 2819 2820 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2821 2822 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2823 static ssize_t hotkey_bios_mask_show(struct device *dev, 2824 struct device_attribute *attr, 2825 char *buf) 2826 { 2827 printk_deprecated_attribute("hotkey_bios_mask", 2828 "This attribute is useless."); 2829 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2830 } 2831 2832 static DEVICE_ATTR_RO(hotkey_bios_mask); 2833 2834 /* sysfs hotkey all_mask ----------------------------------------------- */ 2835 static ssize_t hotkey_all_mask_show(struct device *dev, 2836 struct device_attribute *attr, 2837 char *buf) 2838 { 2839 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2840 hotkey_all_mask | hotkey_source_mask); 2841 } 2842 2843 static DEVICE_ATTR_RO(hotkey_all_mask); 2844 2845 /* sysfs hotkey all_mask ----------------------------------------------- */ 2846 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2847 struct device_attribute *attr, 2848 char *buf) 2849 { 2850 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2851 hotkey_adaptive_all_mask | hotkey_source_mask); 2852 } 2853 2854 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2855 2856 /* sysfs hotkey recommended_mask --------------------------------------- */ 2857 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2858 struct device_attribute *attr, 2859 char *buf) 2860 { 2861 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2862 (hotkey_all_mask | hotkey_source_mask) 2863 & ~hotkey_reserved_mask); 2864 } 2865 2866 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2867 2868 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2869 2870 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2871 static ssize_t hotkey_source_mask_show(struct device *dev, 2872 struct device_attribute *attr, 2873 char *buf) 2874 { 2875 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2876 } 2877 2878 static ssize_t hotkey_source_mask_store(struct device *dev, 2879 struct device_attribute *attr, 2880 const char *buf, size_t count) 2881 { 2882 unsigned long t; 2883 u32 r_ev; 2884 int rc; 2885 2886 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2887 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2888 return -EINVAL; 2889 2890 if (mutex_lock_killable(&hotkey_mutex)) 2891 return -ERESTARTSYS; 2892 2893 HOTKEY_CONFIG_CRITICAL_START 2894 hotkey_source_mask = t; 2895 HOTKEY_CONFIG_CRITICAL_END 2896 2897 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2898 ~hotkey_source_mask); 2899 hotkey_poll_setup(true); 2900 2901 /* check if events needed by the driver got disabled */ 2902 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2903 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2904 2905 mutex_unlock(&hotkey_mutex); 2906 2907 if (rc < 0) 2908 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2909 2910 if (r_ev) 2911 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2912 r_ev); 2913 2914 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2915 2916 return (rc < 0) ? rc : count; 2917 } 2918 2919 static DEVICE_ATTR_RW(hotkey_source_mask); 2920 2921 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2922 static ssize_t hotkey_poll_freq_show(struct device *dev, 2923 struct device_attribute *attr, 2924 char *buf) 2925 { 2926 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2927 } 2928 2929 static ssize_t hotkey_poll_freq_store(struct device *dev, 2930 struct device_attribute *attr, 2931 const char *buf, size_t count) 2932 { 2933 unsigned long t; 2934 2935 if (parse_strtoul(buf, 25, &t)) 2936 return -EINVAL; 2937 2938 if (mutex_lock_killable(&hotkey_mutex)) 2939 return -ERESTARTSYS; 2940 2941 hotkey_poll_set_freq(t); 2942 hotkey_poll_setup(true); 2943 2944 mutex_unlock(&hotkey_mutex); 2945 2946 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2947 2948 return count; 2949 } 2950 2951 static DEVICE_ATTR_RW(hotkey_poll_freq); 2952 2953 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2954 2955 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2956 static ssize_t hotkey_radio_sw_show(struct device *dev, 2957 struct device_attribute *attr, 2958 char *buf) 2959 { 2960 int res; 2961 res = hotkey_get_wlsw(); 2962 if (res < 0) 2963 return res; 2964 2965 /* Opportunistic update */ 2966 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2967 2968 return snprintf(buf, PAGE_SIZE, "%d\n", 2969 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2970 } 2971 2972 static DEVICE_ATTR_RO(hotkey_radio_sw); 2973 2974 static void hotkey_radio_sw_notify_change(void) 2975 { 2976 if (tp_features.hotkey_wlsw) 2977 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2978 "hotkey_radio_sw"); 2979 } 2980 2981 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2982 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2983 struct device_attribute *attr, 2984 char *buf) 2985 { 2986 int res, s; 2987 res = hotkey_get_tablet_mode(&s); 2988 if (res < 0) 2989 return res; 2990 2991 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2992 } 2993 2994 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2995 2996 static void hotkey_tablet_mode_notify_change(void) 2997 { 2998 if (tp_features.hotkey_tablet) 2999 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3000 "hotkey_tablet_mode"); 3001 } 3002 3003 /* sysfs wakeup reason (pollable) -------------------------------------- */ 3004 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 3005 struct device_attribute *attr, 3006 char *buf) 3007 { 3008 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 3009 } 3010 3011 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 3012 3013 static void hotkey_wakeup_reason_notify_change(void) 3014 { 3015 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3016 "wakeup_reason"); 3017 } 3018 3019 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3020 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3021 struct device_attribute *attr, 3022 char *buf) 3023 { 3024 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3025 } 3026 3027 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3028 hotkey_wakeup_hotunplug_complete_show, NULL); 3029 3030 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3031 { 3032 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3033 "wakeup_hotunplug_complete"); 3034 } 3035 3036 /* sysfs adaptive kbd mode --------------------------------------------- */ 3037 3038 static int adaptive_keyboard_get_mode(void); 3039 static int adaptive_keyboard_set_mode(int new_mode); 3040 3041 enum ADAPTIVE_KEY_MODE { 3042 HOME_MODE, 3043 WEB_BROWSER_MODE, 3044 WEB_CONFERENCE_MODE, 3045 FUNCTION_MODE, 3046 LAYFLAT_MODE 3047 }; 3048 3049 static ssize_t adaptive_kbd_mode_show(struct device *dev, 3050 struct device_attribute *attr, 3051 char *buf) 3052 { 3053 int current_mode; 3054 3055 current_mode = adaptive_keyboard_get_mode(); 3056 if (current_mode < 0) 3057 return current_mode; 3058 3059 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3060 } 3061 3062 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3063 struct device_attribute *attr, 3064 const char *buf, size_t count) 3065 { 3066 unsigned long t; 3067 int res; 3068 3069 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3070 return -EINVAL; 3071 3072 res = adaptive_keyboard_set_mode(t); 3073 return (res < 0) ? res : count; 3074 } 3075 3076 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3077 3078 static struct attribute *adaptive_kbd_attributes[] = { 3079 &dev_attr_adaptive_kbd_mode.attr, 3080 NULL 3081 }; 3082 3083 static const struct attribute_group adaptive_kbd_attr_group = { 3084 .attrs = adaptive_kbd_attributes, 3085 }; 3086 3087 /* --------------------------------------------------------------------- */ 3088 3089 static struct attribute *hotkey_attributes[] __initdata = { 3090 &dev_attr_hotkey_enable.attr, 3091 &dev_attr_hotkey_bios_enabled.attr, 3092 &dev_attr_hotkey_bios_mask.attr, 3093 &dev_attr_wakeup_reason.attr, 3094 &dev_attr_wakeup_hotunplug_complete.attr, 3095 &dev_attr_hotkey_mask.attr, 3096 &dev_attr_hotkey_all_mask.attr, 3097 &dev_attr_hotkey_adaptive_all_mask.attr, 3098 &dev_attr_hotkey_recommended_mask.attr, 3099 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3100 &dev_attr_hotkey_source_mask.attr, 3101 &dev_attr_hotkey_poll_freq.attr, 3102 #endif 3103 }; 3104 3105 /* 3106 * Sync both the hw and sw blocking state of all switches 3107 */ 3108 static void tpacpi_send_radiosw_update(void) 3109 { 3110 int wlsw; 3111 3112 /* 3113 * We must sync all rfkill controllers *before* issuing any 3114 * rfkill input events, or we will race the rfkill core input 3115 * handler. 3116 * 3117 * tpacpi_inputdev_send_mutex works as a synchronization point 3118 * for the above. 3119 * 3120 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3121 */ 3122 3123 wlsw = hotkey_get_wlsw(); 3124 3125 /* Sync hw blocking state first if it is hw-blocked */ 3126 if (wlsw == TPACPI_RFK_RADIO_OFF) 3127 tpacpi_rfk_update_hwblock_state(true); 3128 3129 /* Sync sw blocking state */ 3130 tpacpi_rfk_update_swstate_all(); 3131 3132 /* Sync hw blocking state last if it is hw-unblocked */ 3133 if (wlsw == TPACPI_RFK_RADIO_ON) 3134 tpacpi_rfk_update_hwblock_state(false); 3135 3136 /* Issue rfkill input event for WLSW switch */ 3137 if (!(wlsw < 0)) { 3138 mutex_lock(&tpacpi_inputdev_send_mutex); 3139 3140 input_report_switch(tpacpi_inputdev, 3141 SW_RFKILL_ALL, (wlsw > 0)); 3142 input_sync(tpacpi_inputdev); 3143 3144 mutex_unlock(&tpacpi_inputdev_send_mutex); 3145 } 3146 3147 /* 3148 * this can be unconditional, as we will poll state again 3149 * if userspace uses the notify to read data 3150 */ 3151 hotkey_radio_sw_notify_change(); 3152 } 3153 3154 static void hotkey_exit(void) 3155 { 3156 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3157 mutex_lock(&hotkey_mutex); 3158 hotkey_poll_stop_sync(); 3159 mutex_unlock(&hotkey_mutex); 3160 #endif 3161 3162 if (hotkey_dev_attributes) 3163 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3164 3165 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3166 "restoring original HKEY status and mask\n"); 3167 /* yes, there is a bitwise or below, we want the 3168 * functions to be called even if one of them fail */ 3169 if (((tp_features.hotkey_mask && 3170 hotkey_mask_set(hotkey_orig_mask)) | 3171 hotkey_status_set(false)) != 0) 3172 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3173 } 3174 3175 static void __init hotkey_unmap(const unsigned int scancode) 3176 { 3177 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3178 clear_bit(hotkey_keycode_map[scancode], 3179 tpacpi_inputdev->keybit); 3180 hotkey_keycode_map[scancode] = KEY_RESERVED; 3181 } 3182 } 3183 3184 /* 3185 * HKEY quirks: 3186 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3187 */ 3188 3189 #define TPACPI_HK_Q_INIMASK 0x0001 3190 3191 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3192 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3193 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3194 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3195 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3196 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3197 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3198 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3199 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3200 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3201 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3202 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3203 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3204 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3205 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3206 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3207 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3208 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3209 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3210 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3211 }; 3212 3213 typedef u16 tpacpi_keymap_entry_t; 3214 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3215 3216 static int hotkey_init_tablet_mode(void) 3217 { 3218 int in_tablet_mode = 0, res; 3219 char *type = NULL; 3220 3221 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3222 int has_tablet_mode; 3223 3224 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3225 &has_tablet_mode); 3226 if (has_tablet_mode) 3227 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3228 type = "GMMS"; 3229 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3230 /* For X41t, X60t, X61t Tablets... */ 3231 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3232 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3233 type = "MHKG"; 3234 } 3235 3236 if (!tp_features.hotkey_tablet) 3237 return 0; 3238 3239 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3240 type, in_tablet_mode ? "tablet" : "laptop"); 3241 3242 res = add_to_attr_set(hotkey_dev_attributes, 3243 &dev_attr_hotkey_tablet_mode.attr); 3244 if (res) 3245 return -1; 3246 3247 return in_tablet_mode; 3248 } 3249 3250 static int __init hotkey_init(struct ibm_init_struct *iibm) 3251 { 3252 /* Requirements for changing the default keymaps: 3253 * 3254 * 1. Many of the keys are mapped to KEY_RESERVED for very 3255 * good reasons. Do not change them unless you have deep 3256 * knowledge on the IBM and Lenovo ThinkPad firmware for 3257 * the various ThinkPad models. The driver behaves 3258 * differently for KEY_RESERVED: such keys have their 3259 * hot key mask *unset* in mask_recommended, and also 3260 * in the initial hot key mask programmed into the 3261 * firmware at driver load time, which means the firm- 3262 * ware may react very differently if you change them to 3263 * something else; 3264 * 3265 * 2. You must be subscribed to the linux-thinkpad and 3266 * ibm-acpi-devel mailing lists, and you should read the 3267 * list archives since 2007 if you want to change the 3268 * keymaps. This requirement exists so that you will 3269 * know the past history of problems with the thinkpad- 3270 * acpi driver keymaps, and also that you will be 3271 * listening to any bug reports; 3272 * 3273 * 3. Do not send thinkpad-acpi specific patches directly to 3274 * for merging, *ever*. Send them to the linux-acpi 3275 * mailinglist for comments. Merging is to be done only 3276 * through acpi-test and the ACPI maintainer. 3277 * 3278 * If the above is too much to ask, don't change the keymap. 3279 * Ask the thinkpad-acpi maintainer to do it, instead. 3280 */ 3281 3282 enum keymap_index { 3283 TPACPI_KEYMAP_IBM_GENERIC = 0, 3284 TPACPI_KEYMAP_LENOVO_GENERIC, 3285 }; 3286 3287 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3288 /* Generic keymap for IBM ThinkPads */ 3289 [TPACPI_KEYMAP_IBM_GENERIC] = { 3290 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3291 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3292 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3293 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3294 3295 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3296 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3297 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3298 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3299 3300 /* brightness: firmware always reacts to them */ 3301 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3302 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3303 3304 /* Thinklight: firmware always react to it */ 3305 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3306 3307 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3308 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3309 3310 /* Volume: firmware always react to it and reprograms 3311 * the built-in *extra* mixer. Never map it to control 3312 * another mixer by default. */ 3313 KEY_RESERVED, /* 0x14: VOLUME UP */ 3314 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3315 KEY_RESERVED, /* 0x16: MUTE */ 3316 3317 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3318 3319 /* (assignments unknown, please report if found) */ 3320 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3321 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3322 3323 /* No assignments, only used for Adaptive keyboards. */ 3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3327 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3329 3330 /* No assignment, used for newer Lenovo models */ 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3336 KEY_UNKNOWN, KEY_UNKNOWN 3337 3338 }, 3339 3340 /* Generic keymap for Lenovo ThinkPads */ 3341 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3342 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3343 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3344 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3345 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3346 3347 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3348 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3349 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3350 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3351 3352 /* These should be enabled --only-- when ACPI video 3353 * is disabled (i.e. in "vendor" mode), and are handled 3354 * in a special way by the init code */ 3355 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3356 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3357 3358 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3359 3360 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3361 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3362 3363 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3364 * react to it and reprograms the built-in *extra* mixer. 3365 * Never map it to control another mixer by default. 3366 * 3367 * T60?, T61, R60?, R61: firmware and EC tries to send 3368 * these over the regular keyboard, so these are no-ops, 3369 * but there are still weird bugs re. MUTE, so do not 3370 * change unless you get test reports from all Lenovo 3371 * models. May cause the BIOS to interfere with the 3372 * HDA mixer. 3373 */ 3374 KEY_RESERVED, /* 0x14: VOLUME UP */ 3375 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3376 KEY_RESERVED, /* 0x16: MUTE */ 3377 3378 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3379 3380 /* (assignments unknown, please report if found) */ 3381 KEY_UNKNOWN, KEY_UNKNOWN, 3382 3383 /* 3384 * The mic mute button only sends 0x1a. It does not 3385 * automatically mute the mic or change the mute light. 3386 */ 3387 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3388 3389 /* (assignments unknown, please report if found) */ 3390 KEY_UNKNOWN, 3391 3392 /* Extra keys in use since the X240 / T440 / T540 */ 3393 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3394 3395 /* 3396 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3397 * The first item in this list is the Mute button which is 3398 * emitted with 0x103 through 3399 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3400 * symbol is held. 3401 * We'll need to offset those by 0x20. 3402 */ 3403 KEY_RESERVED, /* Mute held, 0x103 */ 3404 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3405 KEY_RESERVED, /* Clipping tool */ 3406 KEY_RESERVED, /* Cloud */ 3407 KEY_RESERVED, 3408 KEY_VOICECOMMAND, /* Voice */ 3409 KEY_RESERVED, 3410 KEY_RESERVED, /* Gestures */ 3411 KEY_RESERVED, 3412 KEY_RESERVED, 3413 KEY_RESERVED, 3414 KEY_CONFIG, /* Settings */ 3415 KEY_RESERVED, /* New tab */ 3416 KEY_REFRESH, /* Reload */ 3417 KEY_BACK, /* Back */ 3418 KEY_RESERVED, /* Microphone down */ 3419 KEY_RESERVED, /* Microphone up */ 3420 KEY_RESERVED, /* Microphone cancellation */ 3421 KEY_RESERVED, /* Camera mode */ 3422 KEY_RESERVED, /* Rotate display, 0x116 */ 3423 3424 /* 3425 * These are found in 2017 models (e.g. T470s, X270). 3426 * The lowest known value is 0x311, which according to 3427 * the manual should launch a user defined favorite 3428 * application. 3429 * 3430 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3431 * corresponding to 0x34. 3432 */ 3433 3434 /* (assignments unknown, please report if found) */ 3435 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3436 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3437 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3438 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3439 KEY_UNKNOWN, 3440 3441 KEY_FAVORITES, /* Favorite app, 0x311 */ 3442 KEY_RESERVED, /* Clipping tool */ 3443 KEY_RESERVED, 3444 KEY_BLUETOOTH, /* Bluetooth */ 3445 KEY_KEYBOARD /* Keyboard, 0x315 */ 3446 }, 3447 }; 3448 3449 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3450 /* Generic maps (fallback) */ 3451 { 3452 .vendor = PCI_VENDOR_ID_IBM, 3453 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3454 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3455 }, 3456 { 3457 .vendor = PCI_VENDOR_ID_LENOVO, 3458 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3459 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3460 }, 3461 }; 3462 3463 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3464 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3465 3466 int res, i; 3467 int status; 3468 int hkeyv; 3469 bool radiosw_state = false; 3470 bool tabletsw_state = false; 3471 3472 unsigned long quirks; 3473 unsigned long keymap_id; 3474 3475 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3476 "initializing hotkey subdriver\n"); 3477 3478 BUG_ON(!tpacpi_inputdev); 3479 BUG_ON(tpacpi_inputdev->open != NULL || 3480 tpacpi_inputdev->close != NULL); 3481 3482 TPACPI_ACPIHANDLE_INIT(hkey); 3483 mutex_init(&hotkey_mutex); 3484 3485 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3486 mutex_init(&hotkey_thread_data_mutex); 3487 #endif 3488 3489 /* hotkey not supported on 570 */ 3490 tp_features.hotkey = hkey_handle != NULL; 3491 3492 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3493 "hotkeys are %s\n", 3494 str_supported(tp_features.hotkey)); 3495 3496 if (!tp_features.hotkey) 3497 return 1; 3498 3499 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3500 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3501 3502 tpacpi_disable_brightness_delay(); 3503 3504 /* MUST have enough space for all attributes to be added to 3505 * hotkey_dev_attributes */ 3506 hotkey_dev_attributes = create_attr_set( 3507 ARRAY_SIZE(hotkey_attributes) + 2, 3508 NULL); 3509 if (!hotkey_dev_attributes) 3510 return -ENOMEM; 3511 res = add_many_to_attr_set(hotkey_dev_attributes, 3512 hotkey_attributes, 3513 ARRAY_SIZE(hotkey_attributes)); 3514 if (res) 3515 goto err_exit; 3516 3517 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3518 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3519 for HKEY interface version 0x100 */ 3520 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3521 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3522 "firmware HKEY interface version: 0x%x\n", 3523 hkeyv); 3524 3525 switch (hkeyv >> 8) { 3526 case 1: 3527 /* 3528 * MHKV 0x100 in A31, R40, R40e, 3529 * T4x, X31, and later 3530 */ 3531 3532 /* Paranoia check AND init hotkey_all_mask */ 3533 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3534 "MHKA", "qd")) { 3535 pr_err("missing MHKA handler, please report this to %s\n", 3536 TPACPI_MAIL); 3537 /* Fallback: pre-init for FN+F3,F4,F12 */ 3538 hotkey_all_mask = 0x080cU; 3539 } else { 3540 tp_features.hotkey_mask = 1; 3541 } 3542 break; 3543 3544 case 2: 3545 /* 3546 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3547 */ 3548 3549 /* Paranoia check AND init hotkey_all_mask */ 3550 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3551 "MHKA", "dd", 1)) { 3552 pr_err("missing MHKA handler, please report this to %s\n", 3553 TPACPI_MAIL); 3554 /* Fallback: pre-init for FN+F3,F4,F12 */ 3555 hotkey_all_mask = 0x080cU; 3556 } else { 3557 tp_features.hotkey_mask = 1; 3558 } 3559 3560 /* 3561 * Check if we have an adaptive keyboard, like on the 3562 * Lenovo Carbon X1 2014 (2nd Gen). 3563 */ 3564 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3565 "MHKA", "dd", 2)) { 3566 if (hotkey_adaptive_all_mask != 0) { 3567 tp_features.has_adaptive_kbd = true; 3568 res = sysfs_create_group( 3569 &tpacpi_pdev->dev.kobj, 3570 &adaptive_kbd_attr_group); 3571 if (res) 3572 goto err_exit; 3573 } 3574 } else { 3575 tp_features.has_adaptive_kbd = false; 3576 hotkey_adaptive_all_mask = 0x0U; 3577 } 3578 break; 3579 3580 default: 3581 pr_err("unknown version of the HKEY interface: 0x%x\n", 3582 hkeyv); 3583 pr_err("please report this to %s\n", TPACPI_MAIL); 3584 break; 3585 } 3586 } 3587 3588 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3589 "hotkey masks are %s\n", 3590 str_supported(tp_features.hotkey_mask)); 3591 3592 /* Init hotkey_all_mask if not initialized yet */ 3593 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3594 (quirks & TPACPI_HK_Q_INIMASK)) 3595 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3596 3597 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3598 if (tp_features.hotkey_mask) { 3599 /* hotkey_source_mask *must* be zero for 3600 * the first hotkey_mask_get to return hotkey_orig_mask */ 3601 res = hotkey_mask_get(); 3602 if (res) 3603 goto err_exit; 3604 3605 hotkey_orig_mask = hotkey_acpi_mask; 3606 } else { 3607 hotkey_orig_mask = hotkey_all_mask; 3608 hotkey_acpi_mask = hotkey_all_mask; 3609 } 3610 3611 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3612 if (dbg_wlswemul) { 3613 tp_features.hotkey_wlsw = 1; 3614 radiosw_state = !!tpacpi_wlsw_emulstate; 3615 pr_info("radio switch emulation enabled\n"); 3616 } else 3617 #endif 3618 /* Not all thinkpads have a hardware radio switch */ 3619 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3620 tp_features.hotkey_wlsw = 1; 3621 radiosw_state = !!status; 3622 pr_info("radio switch found; radios are %s\n", 3623 enabled(status, 0)); 3624 } 3625 if (tp_features.hotkey_wlsw) 3626 res = add_to_attr_set(hotkey_dev_attributes, 3627 &dev_attr_hotkey_radio_sw.attr); 3628 3629 res = hotkey_init_tablet_mode(); 3630 if (res < 0) 3631 goto err_exit; 3632 3633 tabletsw_state = res; 3634 3635 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3636 &tpacpi_pdev->dev.kobj); 3637 if (res) 3638 goto err_exit; 3639 3640 /* Set up key map */ 3641 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, 3642 GFP_KERNEL); 3643 if (!hotkey_keycode_map) { 3644 pr_err("failed to allocate memory for key map\n"); 3645 res = -ENOMEM; 3646 goto err_exit; 3647 } 3648 3649 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3650 ARRAY_SIZE(tpacpi_keymap_qtable)); 3651 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3652 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3653 "using keymap number %lu\n", keymap_id); 3654 3655 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id], 3656 TPACPI_HOTKEY_MAP_SIZE); 3657 3658 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3659 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3660 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3661 tpacpi_inputdev->keycode = hotkey_keycode_map; 3662 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3663 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3664 input_set_capability(tpacpi_inputdev, EV_KEY, 3665 hotkey_keycode_map[i]); 3666 } else { 3667 if (i < sizeof(hotkey_reserved_mask)*8) 3668 hotkey_reserved_mask |= 1 << i; 3669 } 3670 } 3671 3672 if (tp_features.hotkey_wlsw) { 3673 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3674 input_report_switch(tpacpi_inputdev, 3675 SW_RFKILL_ALL, radiosw_state); 3676 } 3677 if (tp_features.hotkey_tablet) { 3678 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3679 input_report_switch(tpacpi_inputdev, 3680 SW_TABLET_MODE, tabletsw_state); 3681 } 3682 3683 /* Do not issue duplicate brightness change events to 3684 * userspace. tpacpi_detect_brightness_capabilities() must have 3685 * been called before this point */ 3686 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3687 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3688 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3689 3690 /* Disable brightness up/down on Lenovo thinkpads when 3691 * ACPI is handling them, otherwise it is plain impossible 3692 * for userspace to do something even remotely sane */ 3693 hotkey_reserved_mask |= 3694 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3695 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3696 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3697 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3698 } 3699 3700 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3701 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3702 & ~hotkey_all_mask 3703 & ~hotkey_reserved_mask; 3704 3705 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3706 "hotkey source mask 0x%08x, polling freq %u\n", 3707 hotkey_source_mask, hotkey_poll_freq); 3708 #endif 3709 3710 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3711 "enabling firmware HKEY event interface...\n"); 3712 res = hotkey_status_set(true); 3713 if (res) { 3714 hotkey_exit(); 3715 return res; 3716 } 3717 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3718 | hotkey_driver_mask) 3719 & ~hotkey_source_mask); 3720 if (res < 0 && res != -ENXIO) { 3721 hotkey_exit(); 3722 return res; 3723 } 3724 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3725 & ~hotkey_reserved_mask; 3726 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3727 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3728 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3729 3730 tpacpi_inputdev->open = &hotkey_inputdev_open; 3731 tpacpi_inputdev->close = &hotkey_inputdev_close; 3732 3733 hotkey_poll_setup_safe(true); 3734 3735 return 0; 3736 3737 err_exit: 3738 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3739 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3740 &adaptive_kbd_attr_group); 3741 3742 hotkey_dev_attributes = NULL; 3743 3744 return (res < 0) ? res : 1; 3745 } 3746 3747 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3748 * mode, Web conference mode, Function mode and Lay-flat mode. 3749 * We support Home mode and Function mode currently. 3750 * 3751 * Will consider support rest of modes in future. 3752 * 3753 */ 3754 static const int adaptive_keyboard_modes[] = { 3755 HOME_MODE, 3756 /* WEB_BROWSER_MODE = 2, 3757 WEB_CONFERENCE_MODE = 3, */ 3758 FUNCTION_MODE 3759 }; 3760 3761 #define DFR_CHANGE_ROW 0x101 3762 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3763 #define FIRST_ADAPTIVE_KEY 0x103 3764 3765 /* press Fn key a while second, it will switch to Function Mode. Then 3766 * release Fn key, previous mode be restored. 3767 */ 3768 static bool adaptive_keyboard_mode_is_saved; 3769 static int adaptive_keyboard_prev_mode; 3770 3771 static int adaptive_keyboard_get_mode(void) 3772 { 3773 int mode = 0; 3774 3775 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3776 pr_err("Cannot read adaptive keyboard mode\n"); 3777 return -EIO; 3778 } 3779 3780 return mode; 3781 } 3782 3783 static int adaptive_keyboard_set_mode(int new_mode) 3784 { 3785 if (new_mode < 0 || 3786 new_mode > LAYFLAT_MODE) 3787 return -EINVAL; 3788 3789 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3790 pr_err("Cannot set adaptive keyboard mode\n"); 3791 return -EIO; 3792 } 3793 3794 return 0; 3795 } 3796 3797 static int adaptive_keyboard_get_next_mode(int mode) 3798 { 3799 size_t i; 3800 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3801 3802 for (i = 0; i <= max_mode; i++) { 3803 if (adaptive_keyboard_modes[i] == mode) 3804 break; 3805 } 3806 3807 if (i >= max_mode) 3808 i = 0; 3809 else 3810 i++; 3811 3812 return adaptive_keyboard_modes[i]; 3813 } 3814 3815 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3816 { 3817 int current_mode = 0; 3818 int new_mode = 0; 3819 int keycode; 3820 3821 switch (scancode) { 3822 case DFR_CHANGE_ROW: 3823 if (adaptive_keyboard_mode_is_saved) { 3824 new_mode = adaptive_keyboard_prev_mode; 3825 adaptive_keyboard_mode_is_saved = false; 3826 } else { 3827 current_mode = adaptive_keyboard_get_mode(); 3828 if (current_mode < 0) 3829 return false; 3830 new_mode = adaptive_keyboard_get_next_mode( 3831 current_mode); 3832 } 3833 3834 if (adaptive_keyboard_set_mode(new_mode) < 0) 3835 return false; 3836 3837 return true; 3838 3839 case DFR_SHOW_QUICKVIEW_ROW: 3840 current_mode = adaptive_keyboard_get_mode(); 3841 if (current_mode < 0) 3842 return false; 3843 3844 adaptive_keyboard_prev_mode = current_mode; 3845 adaptive_keyboard_mode_is_saved = true; 3846 3847 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3848 return false; 3849 return true; 3850 3851 default: 3852 if (scancode < FIRST_ADAPTIVE_KEY || 3853 scancode >= FIRST_ADAPTIVE_KEY + 3854 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3855 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3856 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3857 scancode); 3858 return false; 3859 } 3860 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3861 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3862 if (keycode != KEY_RESERVED) { 3863 mutex_lock(&tpacpi_inputdev_send_mutex); 3864 3865 input_report_key(tpacpi_inputdev, keycode, 1); 3866 input_sync(tpacpi_inputdev); 3867 3868 input_report_key(tpacpi_inputdev, keycode, 0); 3869 input_sync(tpacpi_inputdev); 3870 3871 mutex_unlock(&tpacpi_inputdev_send_mutex); 3872 } 3873 return true; 3874 } 3875 } 3876 3877 static bool hotkey_notify_hotkey(const u32 hkey, 3878 bool *send_acpi_ev, 3879 bool *ignore_acpi_ev) 3880 { 3881 /* 0x1000-0x1FFF: key presses */ 3882 unsigned int scancode = hkey & 0xfff; 3883 *send_acpi_ev = true; 3884 *ignore_acpi_ev = false; 3885 3886 /* 3887 * Original events are in the 0x10XX range, the adaptive keyboard 3888 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3889 * models, additional keys are emitted through 0x13XX. 3890 */ 3891 switch ((hkey >> 8) & 0xf) { 3892 case 0: 3893 if (scancode > 0 && 3894 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3895 /* HKEY event 0x1001 is scancode 0x00 */ 3896 scancode--; 3897 if (!(hotkey_source_mask & (1 << scancode))) { 3898 tpacpi_input_send_key_masked(scancode); 3899 *send_acpi_ev = false; 3900 } else { 3901 *ignore_acpi_ev = true; 3902 } 3903 return true; 3904 } 3905 break; 3906 3907 case 1: 3908 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3909 3910 case 3: 3911 /* Extended keycodes start at 0x300 and our offset into the map 3912 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3913 * will be positive, but might not be in the correct range. 3914 */ 3915 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3916 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3917 scancode < TPACPI_HOTKEY_MAP_LEN) { 3918 tpacpi_input_send_key(scancode); 3919 return true; 3920 } 3921 break; 3922 } 3923 3924 return false; 3925 } 3926 3927 static bool hotkey_notify_wakeup(const u32 hkey, 3928 bool *send_acpi_ev, 3929 bool *ignore_acpi_ev) 3930 { 3931 /* 0x2000-0x2FFF: Wakeup reason */ 3932 *send_acpi_ev = true; 3933 *ignore_acpi_ev = false; 3934 3935 switch (hkey) { 3936 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3937 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3938 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3939 *ignore_acpi_ev = true; 3940 break; 3941 3942 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3943 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3944 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3945 *ignore_acpi_ev = true; 3946 break; 3947 3948 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3949 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3950 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3951 /* how to auto-heal: */ 3952 /* 2313: woke up from S3, go to S4/S5 */ 3953 /* 2413: woke up from S4, go to S5 */ 3954 break; 3955 3956 default: 3957 return false; 3958 } 3959 3960 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3961 pr_info("woke up due to a hot-unplug request...\n"); 3962 hotkey_wakeup_reason_notify_change(); 3963 } 3964 return true; 3965 } 3966 3967 static bool hotkey_notify_dockevent(const u32 hkey, 3968 bool *send_acpi_ev, 3969 bool *ignore_acpi_ev) 3970 { 3971 /* 0x4000-0x4FFF: dock-related events */ 3972 *send_acpi_ev = true; 3973 *ignore_acpi_ev = false; 3974 3975 switch (hkey) { 3976 case TP_HKEY_EV_UNDOCK_ACK: 3977 /* ACPI undock operation completed after wakeup */ 3978 hotkey_autosleep_ack = 1; 3979 pr_info("undocked\n"); 3980 hotkey_wakeup_hotunplug_complete_notify_change(); 3981 return true; 3982 3983 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3984 pr_info("docked into hotplug port replicator\n"); 3985 return true; 3986 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3987 pr_info("undocked from hotplug port replicator\n"); 3988 return true; 3989 3990 default: 3991 return false; 3992 } 3993 } 3994 3995 static bool hotkey_notify_usrevent(const u32 hkey, 3996 bool *send_acpi_ev, 3997 bool *ignore_acpi_ev) 3998 { 3999 /* 0x5000-0x5FFF: human interface helpers */ 4000 *send_acpi_ev = true; 4001 *ignore_acpi_ev = false; 4002 4003 switch (hkey) { 4004 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4005 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4006 return true; 4007 4008 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4009 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4010 tpacpi_input_send_tabletsw(); 4011 hotkey_tablet_mode_notify_change(); 4012 *send_acpi_ev = false; 4013 return true; 4014 4015 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4016 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4017 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4018 /* do not propagate these events */ 4019 *ignore_acpi_ev = true; 4020 return true; 4021 4022 default: 4023 return false; 4024 } 4025 } 4026 4027 static void thermal_dump_all_sensors(void); 4028 4029 static bool hotkey_notify_6xxx(const u32 hkey, 4030 bool *send_acpi_ev, 4031 bool *ignore_acpi_ev) 4032 { 4033 bool known = true; 4034 4035 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4036 *send_acpi_ev = true; 4037 *ignore_acpi_ev = false; 4038 4039 switch (hkey) { 4040 case TP_HKEY_EV_THM_TABLE_CHANGED: 4041 pr_info("EC reports that Thermal Table has changed\n"); 4042 /* recommended action: do nothing, we don't have 4043 * Lenovo ATM information */ 4044 return true; 4045 case TP_HKEY_EV_ALARM_BAT_HOT: 4046 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4047 /* recommended action: warn user through gui */ 4048 break; 4049 case TP_HKEY_EV_ALARM_BAT_XHOT: 4050 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4051 /* recommended action: immediate sleep/hibernate */ 4052 break; 4053 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4054 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4055 /* recommended action: warn user through gui, that */ 4056 /* some internal component is too hot */ 4057 break; 4058 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4059 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4060 /* recommended action: immediate sleep/hibernate */ 4061 break; 4062 case TP_HKEY_EV_AC_CHANGED: 4063 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4064 * AC status changed; can be triggered by plugging or 4065 * unplugging AC adapter, docking or undocking. */ 4066 4067 /* fallthrough */ 4068 4069 case TP_HKEY_EV_KEY_NUMLOCK: 4070 case TP_HKEY_EV_KEY_FN: 4071 case TP_HKEY_EV_KEY_FN_ESC: 4072 /* key press events, we just ignore them as long as the EC 4073 * is still reporting them in the normal keyboard stream */ 4074 *send_acpi_ev = false; 4075 *ignore_acpi_ev = true; 4076 return true; 4077 4078 case TP_HKEY_EV_TABLET_CHANGED: 4079 tpacpi_input_send_tabletsw(); 4080 hotkey_tablet_mode_notify_change(); 4081 *send_acpi_ev = false; 4082 break; 4083 4084 case TP_HKEY_EV_PALM_DETECTED: 4085 case TP_HKEY_EV_PALM_UNDETECTED: 4086 /* palm detected hovering the keyboard, forward to user-space 4087 * via netlink for consumption */ 4088 return true; 4089 4090 default: 4091 pr_warn("unknown possible thermal alarm or keyboard event received\n"); 4092 known = false; 4093 } 4094 4095 thermal_dump_all_sensors(); 4096 4097 return known; 4098 } 4099 4100 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4101 { 4102 u32 hkey; 4103 bool send_acpi_ev; 4104 bool ignore_acpi_ev; 4105 bool known_ev; 4106 4107 if (event != 0x80) { 4108 pr_err("unknown HKEY notification event %d\n", event); 4109 /* forward it to userspace, maybe it knows how to handle it */ 4110 acpi_bus_generate_netlink_event( 4111 ibm->acpi->device->pnp.device_class, 4112 dev_name(&ibm->acpi->device->dev), 4113 event, 0); 4114 return; 4115 } 4116 4117 while (1) { 4118 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4119 pr_err("failed to retrieve HKEY event\n"); 4120 return; 4121 } 4122 4123 if (hkey == 0) { 4124 /* queue empty */ 4125 return; 4126 } 4127 4128 send_acpi_ev = true; 4129 ignore_acpi_ev = false; 4130 4131 switch (hkey >> 12) { 4132 case 1: 4133 /* 0x1000-0x1FFF: key presses */ 4134 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4135 &ignore_acpi_ev); 4136 break; 4137 case 2: 4138 /* 0x2000-0x2FFF: Wakeup reason */ 4139 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4140 &ignore_acpi_ev); 4141 break; 4142 case 3: 4143 /* 0x3000-0x3FFF: bay-related wakeups */ 4144 switch (hkey) { 4145 case TP_HKEY_EV_BAYEJ_ACK: 4146 hotkey_autosleep_ack = 1; 4147 pr_info("bay ejected\n"); 4148 hotkey_wakeup_hotunplug_complete_notify_change(); 4149 known_ev = true; 4150 break; 4151 case TP_HKEY_EV_OPTDRV_EJ: 4152 /* FIXME: kick libata if SATA link offline */ 4153 known_ev = true; 4154 break; 4155 default: 4156 known_ev = false; 4157 } 4158 break; 4159 case 4: 4160 /* 0x4000-0x4FFF: dock-related events */ 4161 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4162 &ignore_acpi_ev); 4163 break; 4164 case 5: 4165 /* 0x5000-0x5FFF: human interface helpers */ 4166 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4167 &ignore_acpi_ev); 4168 break; 4169 case 6: 4170 /* 0x6000-0x6FFF: thermal alarms/notices and 4171 * keyboard events */ 4172 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4173 &ignore_acpi_ev); 4174 break; 4175 case 7: 4176 /* 0x7000-0x7FFF: misc */ 4177 if (tp_features.hotkey_wlsw && 4178 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4179 tpacpi_send_radiosw_update(); 4180 send_acpi_ev = 0; 4181 known_ev = true; 4182 break; 4183 } 4184 /* fallthrough to default */ 4185 default: 4186 known_ev = false; 4187 } 4188 if (!known_ev) { 4189 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4190 pr_notice("please report the conditions when this event happened to %s\n", 4191 TPACPI_MAIL); 4192 } 4193 4194 /* netlink events */ 4195 if (!ignore_acpi_ev && send_acpi_ev) { 4196 acpi_bus_generate_netlink_event( 4197 ibm->acpi->device->pnp.device_class, 4198 dev_name(&ibm->acpi->device->dev), 4199 event, hkey); 4200 } 4201 } 4202 } 4203 4204 static void hotkey_suspend(void) 4205 { 4206 /* Do these on suspend, we get the events on early resume! */ 4207 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4208 hotkey_autosleep_ack = 0; 4209 4210 /* save previous mode of adaptive keyboard of X1 Carbon */ 4211 if (tp_features.has_adaptive_kbd) { 4212 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4213 "GTRW", "dd", 0)) { 4214 pr_err("Cannot read adaptive keyboard mode.\n"); 4215 } 4216 } 4217 } 4218 4219 static void hotkey_resume(void) 4220 { 4221 tpacpi_disable_brightness_delay(); 4222 4223 if (hotkey_status_set(true) < 0 || 4224 hotkey_mask_set(hotkey_acpi_mask) < 0) 4225 pr_err("error while attempting to reset the event firmware interface\n"); 4226 4227 tpacpi_send_radiosw_update(); 4228 hotkey_tablet_mode_notify_change(); 4229 hotkey_wakeup_reason_notify_change(); 4230 hotkey_wakeup_hotunplug_complete_notify_change(); 4231 hotkey_poll_setup_safe(false); 4232 4233 /* restore previous mode of adapive keyboard of X1 Carbon */ 4234 if (tp_features.has_adaptive_kbd) { 4235 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4236 adaptive_keyboard_prev_mode)) { 4237 pr_err("Cannot set adaptive keyboard mode.\n"); 4238 } 4239 } 4240 } 4241 4242 /* procfs -------------------------------------------------------------- */ 4243 static int hotkey_read(struct seq_file *m) 4244 { 4245 int res, status; 4246 4247 if (!tp_features.hotkey) { 4248 seq_printf(m, "status:\t\tnot supported\n"); 4249 return 0; 4250 } 4251 4252 if (mutex_lock_killable(&hotkey_mutex)) 4253 return -ERESTARTSYS; 4254 res = hotkey_status_get(&status); 4255 if (!res) 4256 res = hotkey_mask_get(); 4257 mutex_unlock(&hotkey_mutex); 4258 if (res) 4259 return res; 4260 4261 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4262 if (hotkey_all_mask) { 4263 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4264 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4265 } else { 4266 seq_printf(m, "mask:\t\tnot supported\n"); 4267 seq_printf(m, "commands:\tenable, disable, reset\n"); 4268 } 4269 4270 return 0; 4271 } 4272 4273 static void hotkey_enabledisable_warn(bool enable) 4274 { 4275 tpacpi_log_usertask("procfs hotkey enable/disable"); 4276 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4277 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4278 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4279 } 4280 4281 static int hotkey_write(char *buf) 4282 { 4283 int res; 4284 u32 mask; 4285 char *cmd; 4286 4287 if (!tp_features.hotkey) 4288 return -ENODEV; 4289 4290 if (mutex_lock_killable(&hotkey_mutex)) 4291 return -ERESTARTSYS; 4292 4293 mask = hotkey_user_mask; 4294 4295 res = 0; 4296 while ((cmd = next_cmd(&buf))) { 4297 if (strlencmp(cmd, "enable") == 0) { 4298 hotkey_enabledisable_warn(1); 4299 } else if (strlencmp(cmd, "disable") == 0) { 4300 hotkey_enabledisable_warn(0); 4301 res = -EPERM; 4302 } else if (strlencmp(cmd, "reset") == 0) { 4303 mask = (hotkey_all_mask | hotkey_source_mask) 4304 & ~hotkey_reserved_mask; 4305 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4306 /* mask set */ 4307 } else if (sscanf(cmd, "%x", &mask) == 1) { 4308 /* mask set */ 4309 } else { 4310 res = -EINVAL; 4311 goto errexit; 4312 } 4313 } 4314 4315 if (!res) { 4316 tpacpi_disclose_usertask("procfs hotkey", 4317 "set mask to 0x%08x\n", mask); 4318 res = hotkey_user_mask_set(mask); 4319 } 4320 4321 errexit: 4322 mutex_unlock(&hotkey_mutex); 4323 return res; 4324 } 4325 4326 static const struct acpi_device_id ibm_htk_device_ids[] = { 4327 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4328 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4329 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4330 {"", 0}, 4331 }; 4332 4333 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4334 .hid = ibm_htk_device_ids, 4335 .notify = hotkey_notify, 4336 .handle = &hkey_handle, 4337 .type = ACPI_DEVICE_NOTIFY, 4338 }; 4339 4340 static struct ibm_struct hotkey_driver_data = { 4341 .name = "hotkey", 4342 .read = hotkey_read, 4343 .write = hotkey_write, 4344 .exit = hotkey_exit, 4345 .resume = hotkey_resume, 4346 .suspend = hotkey_suspend, 4347 .acpi = &ibm_hotkey_acpidriver, 4348 }; 4349 4350 /************************************************************************* 4351 * Bluetooth subdriver 4352 */ 4353 4354 enum { 4355 /* ACPI GBDC/SBDC bits */ 4356 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4357 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4358 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4359 0 = disable, 1 = enable */ 4360 }; 4361 4362 enum { 4363 /* ACPI \BLTH commands */ 4364 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4365 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4366 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4367 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4368 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4369 }; 4370 4371 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4372 4373 static int bluetooth_get_status(void) 4374 { 4375 int status; 4376 4377 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4378 if (dbg_bluetoothemul) 4379 return (tpacpi_bluetooth_emulstate) ? 4380 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4381 #endif 4382 4383 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4384 return -EIO; 4385 4386 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4387 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4388 } 4389 4390 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4391 { 4392 int status; 4393 4394 vdbg_printk(TPACPI_DBG_RFKILL, 4395 "will attempt to %s bluetooth\n", 4396 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4397 4398 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4399 if (dbg_bluetoothemul) { 4400 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4401 return 0; 4402 } 4403 #endif 4404 4405 if (state == TPACPI_RFK_RADIO_ON) 4406 status = TP_ACPI_BLUETOOTH_RADIOSSW 4407 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4408 else 4409 status = 0; 4410 4411 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4412 return -EIO; 4413 4414 return 0; 4415 } 4416 4417 /* sysfs bluetooth enable ---------------------------------------------- */ 4418 static ssize_t bluetooth_enable_show(struct device *dev, 4419 struct device_attribute *attr, 4420 char *buf) 4421 { 4422 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4423 attr, buf); 4424 } 4425 4426 static ssize_t bluetooth_enable_store(struct device *dev, 4427 struct device_attribute *attr, 4428 const char *buf, size_t count) 4429 { 4430 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4431 attr, buf, count); 4432 } 4433 4434 static DEVICE_ATTR_RW(bluetooth_enable); 4435 4436 /* --------------------------------------------------------------------- */ 4437 4438 static struct attribute *bluetooth_attributes[] = { 4439 &dev_attr_bluetooth_enable.attr, 4440 NULL 4441 }; 4442 4443 static const struct attribute_group bluetooth_attr_group = { 4444 .attrs = bluetooth_attributes, 4445 }; 4446 4447 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4448 .get_status = bluetooth_get_status, 4449 .set_status = bluetooth_set_status, 4450 }; 4451 4452 static void bluetooth_shutdown(void) 4453 { 4454 /* Order firmware to save current state to NVRAM */ 4455 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4456 TP_ACPI_BLTH_SAVE_STATE)) 4457 pr_notice("failed to save bluetooth state to NVRAM\n"); 4458 else 4459 vdbg_printk(TPACPI_DBG_RFKILL, 4460 "bluetooth state saved to NVRAM\n"); 4461 } 4462 4463 static void bluetooth_exit(void) 4464 { 4465 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4466 &bluetooth_attr_group); 4467 4468 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4469 4470 bluetooth_shutdown(); 4471 } 4472 4473 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4474 { 4475 int res; 4476 int status = 0; 4477 4478 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4479 "initializing bluetooth subdriver\n"); 4480 4481 TPACPI_ACPIHANDLE_INIT(hkey); 4482 4483 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4484 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4485 tp_features.bluetooth = hkey_handle && 4486 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4487 4488 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4489 "bluetooth is %s, status 0x%02x\n", 4490 str_supported(tp_features.bluetooth), 4491 status); 4492 4493 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4494 if (dbg_bluetoothemul) { 4495 tp_features.bluetooth = 1; 4496 pr_info("bluetooth switch emulation enabled\n"); 4497 } else 4498 #endif 4499 if (tp_features.bluetooth && 4500 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4501 /* no bluetooth hardware present in system */ 4502 tp_features.bluetooth = 0; 4503 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4504 "bluetooth hardware not installed\n"); 4505 } 4506 4507 if (!tp_features.bluetooth) 4508 return 1; 4509 4510 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4511 &bluetooth_tprfk_ops, 4512 RFKILL_TYPE_BLUETOOTH, 4513 TPACPI_RFK_BLUETOOTH_SW_NAME, 4514 true); 4515 if (res) 4516 return res; 4517 4518 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4519 &bluetooth_attr_group); 4520 if (res) { 4521 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4522 return res; 4523 } 4524 4525 return 0; 4526 } 4527 4528 /* procfs -------------------------------------------------------------- */ 4529 static int bluetooth_read(struct seq_file *m) 4530 { 4531 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4532 } 4533 4534 static int bluetooth_write(char *buf) 4535 { 4536 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4537 } 4538 4539 static struct ibm_struct bluetooth_driver_data = { 4540 .name = "bluetooth", 4541 .read = bluetooth_read, 4542 .write = bluetooth_write, 4543 .exit = bluetooth_exit, 4544 .shutdown = bluetooth_shutdown, 4545 }; 4546 4547 /************************************************************************* 4548 * Wan subdriver 4549 */ 4550 4551 enum { 4552 /* ACPI GWAN/SWAN bits */ 4553 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4554 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4555 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4556 0 = disable, 1 = enable */ 4557 }; 4558 4559 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4560 4561 static int wan_get_status(void) 4562 { 4563 int status; 4564 4565 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4566 if (dbg_wwanemul) 4567 return (tpacpi_wwan_emulstate) ? 4568 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4569 #endif 4570 4571 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4572 return -EIO; 4573 4574 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4575 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4576 } 4577 4578 static int wan_set_status(enum tpacpi_rfkill_state state) 4579 { 4580 int status; 4581 4582 vdbg_printk(TPACPI_DBG_RFKILL, 4583 "will attempt to %s wwan\n", 4584 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4585 4586 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4587 if (dbg_wwanemul) { 4588 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4589 return 0; 4590 } 4591 #endif 4592 4593 if (state == TPACPI_RFK_RADIO_ON) 4594 status = TP_ACPI_WANCARD_RADIOSSW 4595 | TP_ACPI_WANCARD_RESUMECTRL; 4596 else 4597 status = 0; 4598 4599 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4600 return -EIO; 4601 4602 return 0; 4603 } 4604 4605 /* sysfs wan enable ---------------------------------------------------- */ 4606 static ssize_t wan_enable_show(struct device *dev, 4607 struct device_attribute *attr, 4608 char *buf) 4609 { 4610 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4611 attr, buf); 4612 } 4613 4614 static ssize_t wan_enable_store(struct device *dev, 4615 struct device_attribute *attr, 4616 const char *buf, size_t count) 4617 { 4618 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4619 attr, buf, count); 4620 } 4621 4622 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4623 wan_enable_show, wan_enable_store); 4624 4625 /* --------------------------------------------------------------------- */ 4626 4627 static struct attribute *wan_attributes[] = { 4628 &dev_attr_wwan_enable.attr, 4629 NULL 4630 }; 4631 4632 static const struct attribute_group wan_attr_group = { 4633 .attrs = wan_attributes, 4634 }; 4635 4636 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4637 .get_status = wan_get_status, 4638 .set_status = wan_set_status, 4639 }; 4640 4641 static void wan_shutdown(void) 4642 { 4643 /* Order firmware to save current state to NVRAM */ 4644 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4645 TP_ACPI_WGSV_SAVE_STATE)) 4646 pr_notice("failed to save WWAN state to NVRAM\n"); 4647 else 4648 vdbg_printk(TPACPI_DBG_RFKILL, 4649 "WWAN state saved to NVRAM\n"); 4650 } 4651 4652 static void wan_exit(void) 4653 { 4654 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4655 &wan_attr_group); 4656 4657 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4658 4659 wan_shutdown(); 4660 } 4661 4662 static int __init wan_init(struct ibm_init_struct *iibm) 4663 { 4664 int res; 4665 int status = 0; 4666 4667 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4668 "initializing wan subdriver\n"); 4669 4670 TPACPI_ACPIHANDLE_INIT(hkey); 4671 4672 tp_features.wan = hkey_handle && 4673 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4674 4675 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4676 "wan is %s, status 0x%02x\n", 4677 str_supported(tp_features.wan), 4678 status); 4679 4680 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4681 if (dbg_wwanemul) { 4682 tp_features.wan = 1; 4683 pr_info("wwan switch emulation enabled\n"); 4684 } else 4685 #endif 4686 if (tp_features.wan && 4687 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4688 /* no wan hardware present in system */ 4689 tp_features.wan = 0; 4690 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4691 "wan hardware not installed\n"); 4692 } 4693 4694 if (!tp_features.wan) 4695 return 1; 4696 4697 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4698 &wan_tprfk_ops, 4699 RFKILL_TYPE_WWAN, 4700 TPACPI_RFK_WWAN_SW_NAME, 4701 true); 4702 if (res) 4703 return res; 4704 4705 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4706 &wan_attr_group); 4707 4708 if (res) { 4709 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4710 return res; 4711 } 4712 4713 return 0; 4714 } 4715 4716 /* procfs -------------------------------------------------------------- */ 4717 static int wan_read(struct seq_file *m) 4718 { 4719 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4720 } 4721 4722 static int wan_write(char *buf) 4723 { 4724 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4725 } 4726 4727 static struct ibm_struct wan_driver_data = { 4728 .name = "wan", 4729 .read = wan_read, 4730 .write = wan_write, 4731 .exit = wan_exit, 4732 .shutdown = wan_shutdown, 4733 }; 4734 4735 /************************************************************************* 4736 * UWB subdriver 4737 */ 4738 4739 enum { 4740 /* ACPI GUWB/SUWB bits */ 4741 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4742 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4743 }; 4744 4745 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4746 4747 static int uwb_get_status(void) 4748 { 4749 int status; 4750 4751 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4752 if (dbg_uwbemul) 4753 return (tpacpi_uwb_emulstate) ? 4754 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4755 #endif 4756 4757 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4758 return -EIO; 4759 4760 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4761 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4762 } 4763 4764 static int uwb_set_status(enum tpacpi_rfkill_state state) 4765 { 4766 int status; 4767 4768 vdbg_printk(TPACPI_DBG_RFKILL, 4769 "will attempt to %s UWB\n", 4770 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4771 4772 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4773 if (dbg_uwbemul) { 4774 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4775 return 0; 4776 } 4777 #endif 4778 4779 if (state == TPACPI_RFK_RADIO_ON) 4780 status = TP_ACPI_UWB_RADIOSSW; 4781 else 4782 status = 0; 4783 4784 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4785 return -EIO; 4786 4787 return 0; 4788 } 4789 4790 /* --------------------------------------------------------------------- */ 4791 4792 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4793 .get_status = uwb_get_status, 4794 .set_status = uwb_set_status, 4795 }; 4796 4797 static void uwb_exit(void) 4798 { 4799 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4800 } 4801 4802 static int __init uwb_init(struct ibm_init_struct *iibm) 4803 { 4804 int res; 4805 int status = 0; 4806 4807 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4808 "initializing uwb subdriver\n"); 4809 4810 TPACPI_ACPIHANDLE_INIT(hkey); 4811 4812 tp_features.uwb = hkey_handle && 4813 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4814 4815 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4816 "uwb is %s, status 0x%02x\n", 4817 str_supported(tp_features.uwb), 4818 status); 4819 4820 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4821 if (dbg_uwbemul) { 4822 tp_features.uwb = 1; 4823 pr_info("uwb switch emulation enabled\n"); 4824 } else 4825 #endif 4826 if (tp_features.uwb && 4827 !(status & TP_ACPI_UWB_HWPRESENT)) { 4828 /* no uwb hardware present in system */ 4829 tp_features.uwb = 0; 4830 dbg_printk(TPACPI_DBG_INIT, 4831 "uwb hardware not installed\n"); 4832 } 4833 4834 if (!tp_features.uwb) 4835 return 1; 4836 4837 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4838 &uwb_tprfk_ops, 4839 RFKILL_TYPE_UWB, 4840 TPACPI_RFK_UWB_SW_NAME, 4841 false); 4842 return res; 4843 } 4844 4845 static struct ibm_struct uwb_driver_data = { 4846 .name = "uwb", 4847 .exit = uwb_exit, 4848 .flags.experimental = 1, 4849 }; 4850 4851 /************************************************************************* 4852 * Video subdriver 4853 */ 4854 4855 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4856 4857 enum video_access_mode { 4858 TPACPI_VIDEO_NONE = 0, 4859 TPACPI_VIDEO_570, /* 570 */ 4860 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4861 TPACPI_VIDEO_NEW, /* all others */ 4862 }; 4863 4864 enum { /* video status flags, based on VIDEO_570 */ 4865 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4866 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4867 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4868 }; 4869 4870 enum { /* TPACPI_VIDEO_570 constants */ 4871 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4872 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4873 * video_status_flags */ 4874 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4875 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4876 }; 4877 4878 static enum video_access_mode video_supported; 4879 static int video_orig_autosw; 4880 4881 static int video_autosw_get(void); 4882 static int video_autosw_set(int enable); 4883 4884 TPACPI_HANDLE(vid, root, 4885 "\\_SB.PCI.AGP.VGA", /* 570 */ 4886 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4887 "\\_SB.PCI0.VID0", /* 770e */ 4888 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4889 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4890 "\\_SB.PCI0.AGP.VID", /* all others */ 4891 ); /* R30, R31 */ 4892 4893 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4894 4895 static int __init video_init(struct ibm_init_struct *iibm) 4896 { 4897 int ivga; 4898 4899 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4900 4901 TPACPI_ACPIHANDLE_INIT(vid); 4902 if (tpacpi_is_ibm()) 4903 TPACPI_ACPIHANDLE_INIT(vid2); 4904 4905 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4906 /* G41, assume IVGA doesn't change */ 4907 vid_handle = vid2_handle; 4908 4909 if (!vid_handle) 4910 /* video switching not supported on R30, R31 */ 4911 video_supported = TPACPI_VIDEO_NONE; 4912 else if (tpacpi_is_ibm() && 4913 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4914 /* 570 */ 4915 video_supported = TPACPI_VIDEO_570; 4916 else if (tpacpi_is_ibm() && 4917 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4918 /* 600e/x, 770e, 770x */ 4919 video_supported = TPACPI_VIDEO_770; 4920 else 4921 /* all others */ 4922 video_supported = TPACPI_VIDEO_NEW; 4923 4924 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4925 str_supported(video_supported != TPACPI_VIDEO_NONE), 4926 video_supported); 4927 4928 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 4929 } 4930 4931 static void video_exit(void) 4932 { 4933 dbg_printk(TPACPI_DBG_EXIT, 4934 "restoring original video autoswitch mode\n"); 4935 if (video_autosw_set(video_orig_autosw)) 4936 pr_err("error while trying to restore original video autoswitch mode\n"); 4937 } 4938 4939 static int video_outputsw_get(void) 4940 { 4941 int status = 0; 4942 int i; 4943 4944 switch (video_supported) { 4945 case TPACPI_VIDEO_570: 4946 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4947 TP_ACPI_VIDEO_570_PHSCMD)) 4948 return -EIO; 4949 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4950 break; 4951 case TPACPI_VIDEO_770: 4952 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4953 return -EIO; 4954 if (i) 4955 status |= TP_ACPI_VIDEO_S_LCD; 4956 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4957 return -EIO; 4958 if (i) 4959 status |= TP_ACPI_VIDEO_S_CRT; 4960 break; 4961 case TPACPI_VIDEO_NEW: 4962 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4963 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4964 return -EIO; 4965 if (i) 4966 status |= TP_ACPI_VIDEO_S_CRT; 4967 4968 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4969 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4970 return -EIO; 4971 if (i) 4972 status |= TP_ACPI_VIDEO_S_LCD; 4973 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4974 return -EIO; 4975 if (i) 4976 status |= TP_ACPI_VIDEO_S_DVI; 4977 break; 4978 default: 4979 return -ENOSYS; 4980 } 4981 4982 return status; 4983 } 4984 4985 static int video_outputsw_set(int status) 4986 { 4987 int autosw; 4988 int res = 0; 4989 4990 switch (video_supported) { 4991 case TPACPI_VIDEO_570: 4992 res = acpi_evalf(NULL, NULL, 4993 "\\_SB.PHS2", "vdd", 4994 TP_ACPI_VIDEO_570_PHS2CMD, 4995 status | TP_ACPI_VIDEO_570_PHS2SET); 4996 break; 4997 case TPACPI_VIDEO_770: 4998 autosw = video_autosw_get(); 4999 if (autosw < 0) 5000 return autosw; 5001 5002 res = video_autosw_set(1); 5003 if (res) 5004 return res; 5005 res = acpi_evalf(vid_handle, NULL, 5006 "ASWT", "vdd", status * 0x100, 0); 5007 if (!autosw && video_autosw_set(autosw)) { 5008 pr_err("video auto-switch left enabled due to error\n"); 5009 return -EIO; 5010 } 5011 break; 5012 case TPACPI_VIDEO_NEW: 5013 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5014 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5015 break; 5016 default: 5017 return -ENOSYS; 5018 } 5019 5020 return (res) ? 0 : -EIO; 5021 } 5022 5023 static int video_autosw_get(void) 5024 { 5025 int autosw = 0; 5026 5027 switch (video_supported) { 5028 case TPACPI_VIDEO_570: 5029 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5030 return -EIO; 5031 break; 5032 case TPACPI_VIDEO_770: 5033 case TPACPI_VIDEO_NEW: 5034 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5035 return -EIO; 5036 break; 5037 default: 5038 return -ENOSYS; 5039 } 5040 5041 return autosw & 1; 5042 } 5043 5044 static int video_autosw_set(int enable) 5045 { 5046 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5047 return -EIO; 5048 return 0; 5049 } 5050 5051 static int video_outputsw_cycle(void) 5052 { 5053 int autosw = video_autosw_get(); 5054 int res; 5055 5056 if (autosw < 0) 5057 return autosw; 5058 5059 switch (video_supported) { 5060 case TPACPI_VIDEO_570: 5061 res = video_autosw_set(1); 5062 if (res) 5063 return res; 5064 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5065 break; 5066 case TPACPI_VIDEO_770: 5067 case TPACPI_VIDEO_NEW: 5068 res = video_autosw_set(1); 5069 if (res) 5070 return res; 5071 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5072 break; 5073 default: 5074 return -ENOSYS; 5075 } 5076 if (!autosw && video_autosw_set(autosw)) { 5077 pr_err("video auto-switch left enabled due to error\n"); 5078 return -EIO; 5079 } 5080 5081 return (res) ? 0 : -EIO; 5082 } 5083 5084 static int video_expand_toggle(void) 5085 { 5086 switch (video_supported) { 5087 case TPACPI_VIDEO_570: 5088 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5089 0 : -EIO; 5090 case TPACPI_VIDEO_770: 5091 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5092 0 : -EIO; 5093 case TPACPI_VIDEO_NEW: 5094 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5095 0 : -EIO; 5096 default: 5097 return -ENOSYS; 5098 } 5099 /* not reached */ 5100 } 5101 5102 static int video_read(struct seq_file *m) 5103 { 5104 int status, autosw; 5105 5106 if (video_supported == TPACPI_VIDEO_NONE) { 5107 seq_printf(m, "status:\t\tnot supported\n"); 5108 return 0; 5109 } 5110 5111 /* Even reads can crash X.org, so... */ 5112 if (!capable(CAP_SYS_ADMIN)) 5113 return -EPERM; 5114 5115 status = video_outputsw_get(); 5116 if (status < 0) 5117 return status; 5118 5119 autosw = video_autosw_get(); 5120 if (autosw < 0) 5121 return autosw; 5122 5123 seq_printf(m, "status:\t\tsupported\n"); 5124 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5125 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5126 if (video_supported == TPACPI_VIDEO_NEW) 5127 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5128 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5129 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5130 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5131 if (video_supported == TPACPI_VIDEO_NEW) 5132 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5133 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5134 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5135 5136 return 0; 5137 } 5138 5139 static int video_write(char *buf) 5140 { 5141 char *cmd; 5142 int enable, disable, status; 5143 int res; 5144 5145 if (video_supported == TPACPI_VIDEO_NONE) 5146 return -ENODEV; 5147 5148 /* Even reads can crash X.org, let alone writes... */ 5149 if (!capable(CAP_SYS_ADMIN)) 5150 return -EPERM; 5151 5152 enable = 0; 5153 disable = 0; 5154 5155 while ((cmd = next_cmd(&buf))) { 5156 if (strlencmp(cmd, "lcd_enable") == 0) { 5157 enable |= TP_ACPI_VIDEO_S_LCD; 5158 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5159 disable |= TP_ACPI_VIDEO_S_LCD; 5160 } else if (strlencmp(cmd, "crt_enable") == 0) { 5161 enable |= TP_ACPI_VIDEO_S_CRT; 5162 } else if (strlencmp(cmd, "crt_disable") == 0) { 5163 disable |= TP_ACPI_VIDEO_S_CRT; 5164 } else if (video_supported == TPACPI_VIDEO_NEW && 5165 strlencmp(cmd, "dvi_enable") == 0) { 5166 enable |= TP_ACPI_VIDEO_S_DVI; 5167 } else if (video_supported == TPACPI_VIDEO_NEW && 5168 strlencmp(cmd, "dvi_disable") == 0) { 5169 disable |= TP_ACPI_VIDEO_S_DVI; 5170 } else if (strlencmp(cmd, "auto_enable") == 0) { 5171 res = video_autosw_set(1); 5172 if (res) 5173 return res; 5174 } else if (strlencmp(cmd, "auto_disable") == 0) { 5175 res = video_autosw_set(0); 5176 if (res) 5177 return res; 5178 } else if (strlencmp(cmd, "video_switch") == 0) { 5179 res = video_outputsw_cycle(); 5180 if (res) 5181 return res; 5182 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5183 res = video_expand_toggle(); 5184 if (res) 5185 return res; 5186 } else 5187 return -EINVAL; 5188 } 5189 5190 if (enable || disable) { 5191 status = video_outputsw_get(); 5192 if (status < 0) 5193 return status; 5194 res = video_outputsw_set((status & ~disable) | enable); 5195 if (res) 5196 return res; 5197 } 5198 5199 return 0; 5200 } 5201 5202 static struct ibm_struct video_driver_data = { 5203 .name = "video", 5204 .read = video_read, 5205 .write = video_write, 5206 .exit = video_exit, 5207 }; 5208 5209 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5210 5211 /************************************************************************* 5212 * Keyboard backlight subdriver 5213 */ 5214 5215 static enum led_brightness kbdlight_brightness; 5216 static DEFINE_MUTEX(kbdlight_mutex); 5217 5218 static int kbdlight_set_level(int level) 5219 { 5220 int ret = 0; 5221 5222 if (!hkey_handle) 5223 return -ENXIO; 5224 5225 mutex_lock(&kbdlight_mutex); 5226 5227 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5228 ret = -EIO; 5229 else 5230 kbdlight_brightness = level; 5231 5232 mutex_unlock(&kbdlight_mutex); 5233 5234 return ret; 5235 } 5236 5237 static int kbdlight_get_level(void) 5238 { 5239 int status = 0; 5240 5241 if (!hkey_handle) 5242 return -ENXIO; 5243 5244 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5245 return -EIO; 5246 5247 if (status < 0) 5248 return status; 5249 5250 return status & 0x3; 5251 } 5252 5253 static bool kbdlight_is_supported(void) 5254 { 5255 int status = 0; 5256 5257 if (!hkey_handle) 5258 return false; 5259 5260 if (!acpi_has_method(hkey_handle, "MLCG")) { 5261 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5262 return false; 5263 } 5264 5265 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5266 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5267 return false; 5268 } 5269 5270 if (status < 0) { 5271 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5272 return false; 5273 } 5274 5275 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5276 /* 5277 * Guessed test for keyboard backlight: 5278 * 5279 * Machines with backlight keyboard return: 5280 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5281 * b110100010010000000XX - ThinkPad x230 5282 * b010100000010000000XX - ThinkPad x240 5283 * b010100000010000000XX - ThinkPad W541 5284 * (XX is current backlight level) 5285 * 5286 * Machines without backlight keyboard return: 5287 * b10100001000000000000 - ThinkPad x230 5288 * b10110001000000000000 - ThinkPad E430 5289 * b00000000000000000000 - ThinkPad E450 5290 * 5291 * Candidate BITs for detection test (XOR): 5292 * b01000000001000000000 5293 * ^ 5294 */ 5295 return status & BIT(9); 5296 } 5297 5298 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5299 enum led_brightness brightness) 5300 { 5301 return kbdlight_set_level(brightness); 5302 } 5303 5304 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5305 { 5306 int level; 5307 5308 level = kbdlight_get_level(); 5309 if (level < 0) 5310 return 0; 5311 5312 return level; 5313 } 5314 5315 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5316 .led_classdev = { 5317 .name = "tpacpi::kbd_backlight", 5318 .max_brightness = 2, 5319 .flags = LED_BRIGHT_HW_CHANGED, 5320 .brightness_set_blocking = &kbdlight_sysfs_set, 5321 .brightness_get = &kbdlight_sysfs_get, 5322 } 5323 }; 5324 5325 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5326 { 5327 int rc; 5328 5329 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5330 5331 TPACPI_ACPIHANDLE_INIT(hkey); 5332 5333 if (!kbdlight_is_supported()) { 5334 tp_features.kbdlight = 0; 5335 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5336 return 1; 5337 } 5338 5339 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5340 tp_features.kbdlight = 1; 5341 5342 rc = led_classdev_register(&tpacpi_pdev->dev, 5343 &tpacpi_led_kbdlight.led_classdev); 5344 if (rc < 0) { 5345 tp_features.kbdlight = 0; 5346 return rc; 5347 } 5348 5349 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5350 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5351 return 0; 5352 } 5353 5354 static void kbdlight_exit(void) 5355 { 5356 if (tp_features.kbdlight) 5357 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5358 } 5359 5360 static int kbdlight_set_level_and_update(int level) 5361 { 5362 int ret; 5363 struct led_classdev *led_cdev; 5364 5365 ret = kbdlight_set_level(level); 5366 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5367 5368 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5369 led_cdev->brightness = level; 5370 5371 return ret; 5372 } 5373 5374 static int kbdlight_read(struct seq_file *m) 5375 { 5376 int level; 5377 5378 if (!tp_features.kbdlight) { 5379 seq_printf(m, "status:\t\tnot supported\n"); 5380 } else { 5381 level = kbdlight_get_level(); 5382 if (level < 0) 5383 seq_printf(m, "status:\t\terror %d\n", level); 5384 else 5385 seq_printf(m, "status:\t\t%d\n", level); 5386 seq_printf(m, "commands:\t0, 1, 2\n"); 5387 } 5388 5389 return 0; 5390 } 5391 5392 static int kbdlight_write(char *buf) 5393 { 5394 char *cmd; 5395 int level = -1; 5396 5397 if (!tp_features.kbdlight) 5398 return -ENODEV; 5399 5400 while ((cmd = next_cmd(&buf))) { 5401 if (strlencmp(cmd, "0") == 0) 5402 level = 0; 5403 else if (strlencmp(cmd, "1") == 0) 5404 level = 1; 5405 else if (strlencmp(cmd, "2") == 0) 5406 level = 2; 5407 else 5408 return -EINVAL; 5409 } 5410 5411 if (level == -1) 5412 return -EINVAL; 5413 5414 return kbdlight_set_level_and_update(level); 5415 } 5416 5417 static void kbdlight_suspend(void) 5418 { 5419 struct led_classdev *led_cdev; 5420 5421 if (!tp_features.kbdlight) 5422 return; 5423 5424 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5425 led_update_brightness(led_cdev); 5426 led_classdev_suspend(led_cdev); 5427 } 5428 5429 static void kbdlight_resume(void) 5430 { 5431 if (!tp_features.kbdlight) 5432 return; 5433 5434 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5435 } 5436 5437 static struct ibm_struct kbdlight_driver_data = { 5438 .name = "kbdlight", 5439 .read = kbdlight_read, 5440 .write = kbdlight_write, 5441 .suspend = kbdlight_suspend, 5442 .resume = kbdlight_resume, 5443 .exit = kbdlight_exit, 5444 }; 5445 5446 /************************************************************************* 5447 * Light (thinklight) subdriver 5448 */ 5449 5450 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5451 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5452 5453 static int light_get_status(void) 5454 { 5455 int status = 0; 5456 5457 if (tp_features.light_status) { 5458 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5459 return -EIO; 5460 return (!!status); 5461 } 5462 5463 return -ENXIO; 5464 } 5465 5466 static int light_set_status(int status) 5467 { 5468 int rc; 5469 5470 if (tp_features.light) { 5471 if (cmos_handle) { 5472 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5473 (status) ? 5474 TP_CMOS_THINKLIGHT_ON : 5475 TP_CMOS_THINKLIGHT_OFF); 5476 } else { 5477 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5478 (status) ? 1 : 0); 5479 } 5480 return (rc) ? 0 : -EIO; 5481 } 5482 5483 return -ENXIO; 5484 } 5485 5486 static int light_sysfs_set(struct led_classdev *led_cdev, 5487 enum led_brightness brightness) 5488 { 5489 return light_set_status((brightness != LED_OFF) ? 5490 TPACPI_LED_ON : TPACPI_LED_OFF); 5491 } 5492 5493 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5494 { 5495 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5496 } 5497 5498 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5499 .led_classdev = { 5500 .name = "tpacpi::thinklight", 5501 .brightness_set_blocking = &light_sysfs_set, 5502 .brightness_get = &light_sysfs_get, 5503 } 5504 }; 5505 5506 static int __init light_init(struct ibm_init_struct *iibm) 5507 { 5508 int rc; 5509 5510 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5511 5512 if (tpacpi_is_ibm()) { 5513 TPACPI_ACPIHANDLE_INIT(ledb); 5514 TPACPI_ACPIHANDLE_INIT(lght); 5515 } 5516 TPACPI_ACPIHANDLE_INIT(cmos); 5517 5518 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5519 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5520 5521 if (tp_features.light) 5522 /* light status not supported on 5523 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5524 tp_features.light_status = 5525 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5526 5527 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5528 str_supported(tp_features.light), 5529 str_supported(tp_features.light_status)); 5530 5531 if (!tp_features.light) 5532 return 1; 5533 5534 rc = led_classdev_register(&tpacpi_pdev->dev, 5535 &tpacpi_led_thinklight.led_classdev); 5536 5537 if (rc < 0) { 5538 tp_features.light = 0; 5539 tp_features.light_status = 0; 5540 } else { 5541 rc = 0; 5542 } 5543 5544 return rc; 5545 } 5546 5547 static void light_exit(void) 5548 { 5549 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5550 } 5551 5552 static int light_read(struct seq_file *m) 5553 { 5554 int status; 5555 5556 if (!tp_features.light) { 5557 seq_printf(m, "status:\t\tnot supported\n"); 5558 } else if (!tp_features.light_status) { 5559 seq_printf(m, "status:\t\tunknown\n"); 5560 seq_printf(m, "commands:\ton, off\n"); 5561 } else { 5562 status = light_get_status(); 5563 if (status < 0) 5564 return status; 5565 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5566 seq_printf(m, "commands:\ton, off\n"); 5567 } 5568 5569 return 0; 5570 } 5571 5572 static int light_write(char *buf) 5573 { 5574 char *cmd; 5575 int newstatus = 0; 5576 5577 if (!tp_features.light) 5578 return -ENODEV; 5579 5580 while ((cmd = next_cmd(&buf))) { 5581 if (strlencmp(cmd, "on") == 0) { 5582 newstatus = 1; 5583 } else if (strlencmp(cmd, "off") == 0) { 5584 newstatus = 0; 5585 } else 5586 return -EINVAL; 5587 } 5588 5589 return light_set_status(newstatus); 5590 } 5591 5592 static struct ibm_struct light_driver_data = { 5593 .name = "light", 5594 .read = light_read, 5595 .write = light_write, 5596 .exit = light_exit, 5597 }; 5598 5599 /************************************************************************* 5600 * CMOS subdriver 5601 */ 5602 5603 /* sysfs cmos_command -------------------------------------------------- */ 5604 static ssize_t cmos_command_store(struct device *dev, 5605 struct device_attribute *attr, 5606 const char *buf, size_t count) 5607 { 5608 unsigned long cmos_cmd; 5609 int res; 5610 5611 if (parse_strtoul(buf, 21, &cmos_cmd)) 5612 return -EINVAL; 5613 5614 res = issue_thinkpad_cmos_command(cmos_cmd); 5615 return (res) ? res : count; 5616 } 5617 5618 static DEVICE_ATTR_WO(cmos_command); 5619 5620 /* --------------------------------------------------------------------- */ 5621 5622 static int __init cmos_init(struct ibm_init_struct *iibm) 5623 { 5624 int res; 5625 5626 vdbg_printk(TPACPI_DBG_INIT, 5627 "initializing cmos commands subdriver\n"); 5628 5629 TPACPI_ACPIHANDLE_INIT(cmos); 5630 5631 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5632 str_supported(cmos_handle != NULL)); 5633 5634 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5635 if (res) 5636 return res; 5637 5638 return (cmos_handle) ? 0 : 1; 5639 } 5640 5641 static void cmos_exit(void) 5642 { 5643 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5644 } 5645 5646 static int cmos_read(struct seq_file *m) 5647 { 5648 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5649 R30, R31, T20-22, X20-21 */ 5650 if (!cmos_handle) 5651 seq_printf(m, "status:\t\tnot supported\n"); 5652 else { 5653 seq_printf(m, "status:\t\tsupported\n"); 5654 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5655 } 5656 5657 return 0; 5658 } 5659 5660 static int cmos_write(char *buf) 5661 { 5662 char *cmd; 5663 int cmos_cmd, res; 5664 5665 while ((cmd = next_cmd(&buf))) { 5666 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5667 cmos_cmd >= 0 && cmos_cmd <= 21) { 5668 /* cmos_cmd set */ 5669 } else 5670 return -EINVAL; 5671 5672 res = issue_thinkpad_cmos_command(cmos_cmd); 5673 if (res) 5674 return res; 5675 } 5676 5677 return 0; 5678 } 5679 5680 static struct ibm_struct cmos_driver_data = { 5681 .name = "cmos", 5682 .read = cmos_read, 5683 .write = cmos_write, 5684 .exit = cmos_exit, 5685 }; 5686 5687 /************************************************************************* 5688 * LED subdriver 5689 */ 5690 5691 enum led_access_mode { 5692 TPACPI_LED_NONE = 0, 5693 TPACPI_LED_570, /* 570 */ 5694 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5695 TPACPI_LED_NEW, /* all others */ 5696 }; 5697 5698 enum { /* For TPACPI_LED_OLD */ 5699 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5700 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5701 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5702 }; 5703 5704 static enum led_access_mode led_supported; 5705 5706 static acpi_handle led_handle; 5707 5708 #define TPACPI_LED_NUMLEDS 16 5709 static struct tpacpi_led_classdev *tpacpi_leds; 5710 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5711 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5712 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5713 "tpacpi::power", 5714 "tpacpi:orange:batt", 5715 "tpacpi:green:batt", 5716 "tpacpi::dock_active", 5717 "tpacpi::bay_active", 5718 "tpacpi::dock_batt", 5719 "tpacpi::unknown_led", 5720 "tpacpi::standby", 5721 "tpacpi::dock_status1", 5722 "tpacpi::dock_status2", 5723 "tpacpi::unknown_led2", 5724 "tpacpi::unknown_led3", 5725 "tpacpi::thinkvantage", 5726 }; 5727 #define TPACPI_SAFE_LEDS 0x1081U 5728 5729 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5730 { 5731 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5732 return false; 5733 #else 5734 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5735 #endif 5736 } 5737 5738 static int led_get_status(const unsigned int led) 5739 { 5740 int status; 5741 enum led_status_t led_s; 5742 5743 switch (led_supported) { 5744 case TPACPI_LED_570: 5745 if (!acpi_evalf(ec_handle, 5746 &status, "GLED", "dd", 1 << led)) 5747 return -EIO; 5748 led_s = (status == 0) ? 5749 TPACPI_LED_OFF : 5750 ((status == 1) ? 5751 TPACPI_LED_ON : 5752 TPACPI_LED_BLINK); 5753 tpacpi_led_state_cache[led] = led_s; 5754 return led_s; 5755 default: 5756 return -ENXIO; 5757 } 5758 5759 /* not reached */ 5760 } 5761 5762 static int led_set_status(const unsigned int led, 5763 const enum led_status_t ledstatus) 5764 { 5765 /* off, on, blink. Index is led_status_t */ 5766 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5767 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5768 5769 int rc = 0; 5770 5771 switch (led_supported) { 5772 case TPACPI_LED_570: 5773 /* 570 */ 5774 if (unlikely(led > 7)) 5775 return -EINVAL; 5776 if (unlikely(tpacpi_is_led_restricted(led))) 5777 return -EPERM; 5778 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5779 (1 << led), led_sled_arg1[ledstatus])) 5780 rc = -EIO; 5781 break; 5782 case TPACPI_LED_OLD: 5783 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5784 if (unlikely(led > 7)) 5785 return -EINVAL; 5786 if (unlikely(tpacpi_is_led_restricted(led))) 5787 return -EPERM; 5788 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5789 if (rc >= 0) 5790 rc = ec_write(TPACPI_LED_EC_HLBL, 5791 (ledstatus == TPACPI_LED_BLINK) << led); 5792 if (rc >= 0) 5793 rc = ec_write(TPACPI_LED_EC_HLCL, 5794 (ledstatus != TPACPI_LED_OFF) << led); 5795 break; 5796 case TPACPI_LED_NEW: 5797 /* all others */ 5798 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5799 return -EINVAL; 5800 if (unlikely(tpacpi_is_led_restricted(led))) 5801 return -EPERM; 5802 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5803 led, led_led_arg1[ledstatus])) 5804 rc = -EIO; 5805 break; 5806 default: 5807 rc = -ENXIO; 5808 } 5809 5810 if (!rc) 5811 tpacpi_led_state_cache[led] = ledstatus; 5812 5813 return rc; 5814 } 5815 5816 static int led_sysfs_set(struct led_classdev *led_cdev, 5817 enum led_brightness brightness) 5818 { 5819 struct tpacpi_led_classdev *data = container_of(led_cdev, 5820 struct tpacpi_led_classdev, led_classdev); 5821 enum led_status_t new_state; 5822 5823 if (brightness == LED_OFF) 5824 new_state = TPACPI_LED_OFF; 5825 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5826 new_state = TPACPI_LED_ON; 5827 else 5828 new_state = TPACPI_LED_BLINK; 5829 5830 return led_set_status(data->led, new_state); 5831 } 5832 5833 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5834 unsigned long *delay_on, unsigned long *delay_off) 5835 { 5836 struct tpacpi_led_classdev *data = container_of(led_cdev, 5837 struct tpacpi_led_classdev, led_classdev); 5838 5839 /* Can we choose the flash rate? */ 5840 if (*delay_on == 0 && *delay_off == 0) { 5841 /* yes. set them to the hardware blink rate (1 Hz) */ 5842 *delay_on = 500; /* ms */ 5843 *delay_off = 500; /* ms */ 5844 } else if ((*delay_on != 500) || (*delay_off != 500)) 5845 return -EINVAL; 5846 5847 return led_set_status(data->led, TPACPI_LED_BLINK); 5848 } 5849 5850 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5851 { 5852 int rc; 5853 5854 struct tpacpi_led_classdev *data = container_of(led_cdev, 5855 struct tpacpi_led_classdev, led_classdev); 5856 5857 rc = led_get_status(data->led); 5858 5859 if (rc == TPACPI_LED_OFF || rc < 0) 5860 rc = LED_OFF; /* no error handling in led class :( */ 5861 else 5862 rc = LED_FULL; 5863 5864 return rc; 5865 } 5866 5867 static void led_exit(void) 5868 { 5869 unsigned int i; 5870 5871 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5872 if (tpacpi_leds[i].led_classdev.name) 5873 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5874 } 5875 5876 kfree(tpacpi_leds); 5877 } 5878 5879 static int __init tpacpi_init_led(unsigned int led) 5880 { 5881 int rc; 5882 5883 tpacpi_leds[led].led = led; 5884 5885 /* LEDs with no name don't get registered */ 5886 if (!tpacpi_led_names[led]) 5887 return 0; 5888 5889 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5890 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5891 if (led_supported == TPACPI_LED_570) 5892 tpacpi_leds[led].led_classdev.brightness_get = 5893 &led_sysfs_get; 5894 5895 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5896 5897 rc = led_classdev_register(&tpacpi_pdev->dev, 5898 &tpacpi_leds[led].led_classdev); 5899 if (rc < 0) 5900 tpacpi_leds[led].led_classdev.name = NULL; 5901 5902 return rc; 5903 } 5904 5905 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5906 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5907 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5908 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5909 5910 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5911 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5912 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5913 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5914 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5915 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5916 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5917 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5918 5919 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5920 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5921 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5922 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5923 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5924 5925 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5926 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5927 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5928 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5929 5930 /* (1) - may have excess leds enabled on MSB */ 5931 5932 /* Defaults (order matters, keep last, don't reorder!) */ 5933 { /* Lenovo */ 5934 .vendor = PCI_VENDOR_ID_LENOVO, 5935 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5936 .quirks = 0x1fffU, 5937 }, 5938 { /* IBM ThinkPads with no EC version string */ 5939 .vendor = PCI_VENDOR_ID_IBM, 5940 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5941 .quirks = 0x00ffU, 5942 }, 5943 { /* IBM ThinkPads with EC version string */ 5944 .vendor = PCI_VENDOR_ID_IBM, 5945 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5946 .quirks = 0x00bfU, 5947 }, 5948 }; 5949 5950 #undef TPACPI_LEDQ_IBM 5951 #undef TPACPI_LEDQ_LNV 5952 5953 static enum led_access_mode __init led_init_detect_mode(void) 5954 { 5955 acpi_status status; 5956 5957 if (tpacpi_is_ibm()) { 5958 /* 570 */ 5959 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5960 if (ACPI_SUCCESS(status)) 5961 return TPACPI_LED_570; 5962 5963 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5964 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5965 if (ACPI_SUCCESS(status)) 5966 return TPACPI_LED_OLD; 5967 } 5968 5969 /* most others */ 5970 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5971 if (ACPI_SUCCESS(status)) 5972 return TPACPI_LED_NEW; 5973 5974 /* R30, R31, and unknown firmwares */ 5975 led_handle = NULL; 5976 return TPACPI_LED_NONE; 5977 } 5978 5979 static int __init led_init(struct ibm_init_struct *iibm) 5980 { 5981 unsigned int i; 5982 int rc; 5983 unsigned long useful_leds; 5984 5985 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5986 5987 led_supported = led_init_detect_mode(); 5988 5989 if (led_supported != TPACPI_LED_NONE) { 5990 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5991 ARRAY_SIZE(led_useful_qtable)); 5992 5993 if (!useful_leds) { 5994 led_handle = NULL; 5995 led_supported = TPACPI_LED_NONE; 5996 } 5997 } 5998 5999 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6000 str_supported(led_supported), led_supported); 6001 6002 if (led_supported == TPACPI_LED_NONE) 6003 return 1; 6004 6005 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, 6006 GFP_KERNEL); 6007 if (!tpacpi_leds) { 6008 pr_err("Out of memory for LED data\n"); 6009 return -ENOMEM; 6010 } 6011 6012 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6013 tpacpi_leds[i].led = -1; 6014 6015 if (!tpacpi_is_led_restricted(i) && 6016 test_bit(i, &useful_leds)) { 6017 rc = tpacpi_init_led(i); 6018 if (rc < 0) { 6019 led_exit(); 6020 return rc; 6021 } 6022 } 6023 } 6024 6025 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6026 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6027 #endif 6028 return 0; 6029 } 6030 6031 #define str_led_status(s) \ 6032 ((s) == TPACPI_LED_OFF ? "off" : \ 6033 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6034 6035 static int led_read(struct seq_file *m) 6036 { 6037 if (!led_supported) { 6038 seq_printf(m, "status:\t\tnot supported\n"); 6039 return 0; 6040 } 6041 seq_printf(m, "status:\t\tsupported\n"); 6042 6043 if (led_supported == TPACPI_LED_570) { 6044 /* 570 */ 6045 int i, status; 6046 for (i = 0; i < 8; i++) { 6047 status = led_get_status(i); 6048 if (status < 0) 6049 return -EIO; 6050 seq_printf(m, "%d:\t\t%s\n", 6051 i, str_led_status(status)); 6052 } 6053 } 6054 6055 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6056 6057 return 0; 6058 } 6059 6060 static int led_write(char *buf) 6061 { 6062 char *cmd; 6063 int led, rc; 6064 enum led_status_t s; 6065 6066 if (!led_supported) 6067 return -ENODEV; 6068 6069 while ((cmd = next_cmd(&buf))) { 6070 if (sscanf(cmd, "%d", &led) != 1) 6071 return -EINVAL; 6072 6073 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || 6074 tpacpi_leds[led].led < 0) 6075 return -ENODEV; 6076 6077 if (strstr(cmd, "off")) { 6078 s = TPACPI_LED_OFF; 6079 } else if (strstr(cmd, "on")) { 6080 s = TPACPI_LED_ON; 6081 } else if (strstr(cmd, "blink")) { 6082 s = TPACPI_LED_BLINK; 6083 } else { 6084 return -EINVAL; 6085 } 6086 6087 rc = led_set_status(led, s); 6088 if (rc < 0) 6089 return rc; 6090 } 6091 6092 return 0; 6093 } 6094 6095 static struct ibm_struct led_driver_data = { 6096 .name = "led", 6097 .read = led_read, 6098 .write = led_write, 6099 .exit = led_exit, 6100 }; 6101 6102 /************************************************************************* 6103 * Beep subdriver 6104 */ 6105 6106 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6107 6108 #define TPACPI_BEEP_Q1 0x0001 6109 6110 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6111 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6112 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6113 }; 6114 6115 static int __init beep_init(struct ibm_init_struct *iibm) 6116 { 6117 unsigned long quirks; 6118 6119 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6120 6121 TPACPI_ACPIHANDLE_INIT(beep); 6122 6123 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6124 str_supported(beep_handle != NULL)); 6125 6126 quirks = tpacpi_check_quirks(beep_quirk_table, 6127 ARRAY_SIZE(beep_quirk_table)); 6128 6129 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6130 6131 return (beep_handle) ? 0 : 1; 6132 } 6133 6134 static int beep_read(struct seq_file *m) 6135 { 6136 if (!beep_handle) 6137 seq_printf(m, "status:\t\tnot supported\n"); 6138 else { 6139 seq_printf(m, "status:\t\tsupported\n"); 6140 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6141 } 6142 6143 return 0; 6144 } 6145 6146 static int beep_write(char *buf) 6147 { 6148 char *cmd; 6149 int beep_cmd; 6150 6151 if (!beep_handle) 6152 return -ENODEV; 6153 6154 while ((cmd = next_cmd(&buf))) { 6155 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6156 beep_cmd >= 0 && beep_cmd <= 17) { 6157 /* beep_cmd set */ 6158 } else 6159 return -EINVAL; 6160 if (tp_features.beep_needs_two_args) { 6161 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6162 beep_cmd, 0)) 6163 return -EIO; 6164 } else { 6165 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6166 beep_cmd)) 6167 return -EIO; 6168 } 6169 } 6170 6171 return 0; 6172 } 6173 6174 static struct ibm_struct beep_driver_data = { 6175 .name = "beep", 6176 .read = beep_read, 6177 .write = beep_write, 6178 }; 6179 6180 /************************************************************************* 6181 * Thermal subdriver 6182 */ 6183 6184 enum thermal_access_mode { 6185 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6186 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6187 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6188 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6189 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6190 }; 6191 6192 enum { /* TPACPI_THERMAL_TPEC_* */ 6193 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6194 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6195 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6196 6197 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6198 }; 6199 6200 6201 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6202 struct ibm_thermal_sensors_struct { 6203 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6204 }; 6205 6206 static enum thermal_access_mode thermal_read_mode; 6207 6208 /* idx is zero-based */ 6209 static int thermal_get_sensor(int idx, s32 *value) 6210 { 6211 int t; 6212 s8 tmp; 6213 char tmpi[5]; 6214 6215 t = TP_EC_THERMAL_TMP0; 6216 6217 switch (thermal_read_mode) { 6218 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6219 case TPACPI_THERMAL_TPEC_16: 6220 if (idx >= 8 && idx <= 15) { 6221 t = TP_EC_THERMAL_TMP8; 6222 idx -= 8; 6223 } 6224 /* fallthrough */ 6225 #endif 6226 case TPACPI_THERMAL_TPEC_8: 6227 if (idx <= 7) { 6228 if (!acpi_ec_read(t + idx, &tmp)) 6229 return -EIO; 6230 *value = tmp * 1000; 6231 return 0; 6232 } 6233 break; 6234 6235 case TPACPI_THERMAL_ACPI_UPDT: 6236 if (idx <= 7) { 6237 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6238 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6239 return -EIO; 6240 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6241 return -EIO; 6242 *value = (t - 2732) * 100; 6243 return 0; 6244 } 6245 break; 6246 6247 case TPACPI_THERMAL_ACPI_TMP07: 6248 if (idx <= 7) { 6249 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6250 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6251 return -EIO; 6252 if (t > 127 || t < -127) 6253 t = TP_EC_THERMAL_TMP_NA; 6254 *value = t * 1000; 6255 return 0; 6256 } 6257 break; 6258 6259 case TPACPI_THERMAL_NONE: 6260 default: 6261 return -ENOSYS; 6262 } 6263 6264 return -EINVAL; 6265 } 6266 6267 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6268 { 6269 int res, i; 6270 int n; 6271 6272 n = 8; 6273 i = 0; 6274 6275 if (!s) 6276 return -EINVAL; 6277 6278 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6279 n = 16; 6280 6281 for (i = 0 ; i < n; i++) { 6282 res = thermal_get_sensor(i, &s->temp[i]); 6283 if (res) 6284 return res; 6285 } 6286 6287 return n; 6288 } 6289 6290 static void thermal_dump_all_sensors(void) 6291 { 6292 int n, i; 6293 struct ibm_thermal_sensors_struct t; 6294 6295 n = thermal_get_sensors(&t); 6296 if (n <= 0) 6297 return; 6298 6299 pr_notice("temperatures (Celsius):"); 6300 6301 for (i = 0; i < n; i++) { 6302 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6303 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6304 else 6305 pr_cont(" N/A"); 6306 } 6307 6308 pr_cont("\n"); 6309 } 6310 6311 /* sysfs temp##_input -------------------------------------------------- */ 6312 6313 static ssize_t thermal_temp_input_show(struct device *dev, 6314 struct device_attribute *attr, 6315 char *buf) 6316 { 6317 struct sensor_device_attribute *sensor_attr = 6318 to_sensor_dev_attr(attr); 6319 int idx = sensor_attr->index; 6320 s32 value; 6321 int res; 6322 6323 res = thermal_get_sensor(idx, &value); 6324 if (res) 6325 return res; 6326 if (value == TPACPI_THERMAL_SENSOR_NA) 6327 return -ENXIO; 6328 6329 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6330 } 6331 6332 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6333 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6334 thermal_temp_input_show, NULL, _idxB) 6335 6336 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6337 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6338 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6339 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6340 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6341 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6342 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6343 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6344 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6345 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6346 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6347 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6348 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6349 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6350 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6351 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6352 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6353 }; 6354 6355 #define THERMAL_ATTRS(X) \ 6356 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6357 6358 static struct attribute *thermal_temp_input_attr[] = { 6359 THERMAL_ATTRS(8), 6360 THERMAL_ATTRS(9), 6361 THERMAL_ATTRS(10), 6362 THERMAL_ATTRS(11), 6363 THERMAL_ATTRS(12), 6364 THERMAL_ATTRS(13), 6365 THERMAL_ATTRS(14), 6366 THERMAL_ATTRS(15), 6367 THERMAL_ATTRS(0), 6368 THERMAL_ATTRS(1), 6369 THERMAL_ATTRS(2), 6370 THERMAL_ATTRS(3), 6371 THERMAL_ATTRS(4), 6372 THERMAL_ATTRS(5), 6373 THERMAL_ATTRS(6), 6374 THERMAL_ATTRS(7), 6375 NULL 6376 }; 6377 6378 static const struct attribute_group thermal_temp_input16_group = { 6379 .attrs = thermal_temp_input_attr 6380 }; 6381 6382 static const struct attribute_group thermal_temp_input8_group = { 6383 .attrs = &thermal_temp_input_attr[8] 6384 }; 6385 6386 #undef THERMAL_SENSOR_ATTR_TEMP 6387 #undef THERMAL_ATTRS 6388 6389 /* --------------------------------------------------------------------- */ 6390 6391 static int __init thermal_init(struct ibm_init_struct *iibm) 6392 { 6393 u8 t, ta1, ta2; 6394 int i; 6395 int acpi_tmp7; 6396 int res; 6397 6398 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6399 6400 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6401 6402 if (thinkpad_id.ec_model) { 6403 /* 6404 * Direct EC access mode: sensors at registers 6405 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6406 * non-implemented, thermal sensors return 0x80 when 6407 * not available 6408 */ 6409 6410 ta1 = ta2 = 0; 6411 for (i = 0; i < 8; i++) { 6412 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6413 ta1 |= t; 6414 } else { 6415 ta1 = 0; 6416 break; 6417 } 6418 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6419 ta2 |= t; 6420 } else { 6421 ta1 = 0; 6422 break; 6423 } 6424 } 6425 if (ta1 == 0) { 6426 /* This is sheer paranoia, but we handle it anyway */ 6427 if (acpi_tmp7) { 6428 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6429 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6430 } else { 6431 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6432 thermal_read_mode = TPACPI_THERMAL_NONE; 6433 } 6434 } else { 6435 thermal_read_mode = 6436 (ta2 != 0) ? 6437 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6438 } 6439 } else if (acpi_tmp7) { 6440 if (tpacpi_is_ibm() && 6441 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6442 /* 600e/x, 770e, 770x */ 6443 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6444 } else { 6445 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6446 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6447 } 6448 } else { 6449 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6450 thermal_read_mode = TPACPI_THERMAL_NONE; 6451 } 6452 6453 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6454 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6455 thermal_read_mode); 6456 6457 switch (thermal_read_mode) { 6458 case TPACPI_THERMAL_TPEC_16: 6459 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6460 &thermal_temp_input16_group); 6461 if (res) 6462 return res; 6463 break; 6464 case TPACPI_THERMAL_TPEC_8: 6465 case TPACPI_THERMAL_ACPI_TMP07: 6466 case TPACPI_THERMAL_ACPI_UPDT: 6467 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6468 &thermal_temp_input8_group); 6469 if (res) 6470 return res; 6471 break; 6472 case TPACPI_THERMAL_NONE: 6473 default: 6474 return 1; 6475 } 6476 6477 return 0; 6478 } 6479 6480 static void thermal_exit(void) 6481 { 6482 switch (thermal_read_mode) { 6483 case TPACPI_THERMAL_TPEC_16: 6484 sysfs_remove_group(&tpacpi_hwmon->kobj, 6485 &thermal_temp_input16_group); 6486 break; 6487 case TPACPI_THERMAL_TPEC_8: 6488 case TPACPI_THERMAL_ACPI_TMP07: 6489 case TPACPI_THERMAL_ACPI_UPDT: 6490 sysfs_remove_group(&tpacpi_hwmon->kobj, 6491 &thermal_temp_input8_group); 6492 break; 6493 case TPACPI_THERMAL_NONE: 6494 default: 6495 break; 6496 } 6497 } 6498 6499 static int thermal_read(struct seq_file *m) 6500 { 6501 int n, i; 6502 struct ibm_thermal_sensors_struct t; 6503 6504 n = thermal_get_sensors(&t); 6505 if (unlikely(n < 0)) 6506 return n; 6507 6508 seq_printf(m, "temperatures:\t"); 6509 6510 if (n > 0) { 6511 for (i = 0; i < (n - 1); i++) 6512 seq_printf(m, "%d ", t.temp[i] / 1000); 6513 seq_printf(m, "%d\n", t.temp[i] / 1000); 6514 } else 6515 seq_printf(m, "not supported\n"); 6516 6517 return 0; 6518 } 6519 6520 static struct ibm_struct thermal_driver_data = { 6521 .name = "thermal", 6522 .read = thermal_read, 6523 .exit = thermal_exit, 6524 }; 6525 6526 /************************************************************************* 6527 * Backlight/brightness subdriver 6528 */ 6529 6530 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6531 6532 /* 6533 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6534 * CMOS NVRAM byte 0x5E, bits 0-3. 6535 * 6536 * EC HBRV (0x31) has the following layout 6537 * Bit 7: unknown function 6538 * Bit 6: unknown function 6539 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6540 * Bit 4: must be set to zero to avoid problems 6541 * Bit 3-0: backlight brightness level 6542 * 6543 * brightness_get_raw returns status data in the HBRV layout 6544 * 6545 * WARNING: The X61 has been verified to use HBRV for something else, so 6546 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6547 * testing on the very early *60 Lenovo models... 6548 */ 6549 6550 enum { 6551 TP_EC_BACKLIGHT = 0x31, 6552 6553 /* TP_EC_BACKLIGHT bitmasks */ 6554 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6555 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6556 TP_EC_BACKLIGHT_MAPSW = 0x20, 6557 }; 6558 6559 enum tpacpi_brightness_access_mode { 6560 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6561 TPACPI_BRGHT_MODE_EC, /* EC control */ 6562 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6563 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6564 TPACPI_BRGHT_MODE_MAX 6565 }; 6566 6567 static struct backlight_device *ibm_backlight_device; 6568 6569 static enum tpacpi_brightness_access_mode brightness_mode = 6570 TPACPI_BRGHT_MODE_MAX; 6571 6572 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6573 6574 static struct mutex brightness_mutex; 6575 6576 /* NVRAM brightness access, 6577 * call with brightness_mutex held! */ 6578 static unsigned int tpacpi_brightness_nvram_get(void) 6579 { 6580 u8 lnvram; 6581 6582 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6583 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6584 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6585 lnvram &= bright_maxlvl; 6586 6587 return lnvram; 6588 } 6589 6590 static void tpacpi_brightness_checkpoint_nvram(void) 6591 { 6592 u8 lec = 0; 6593 u8 b_nvram; 6594 6595 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6596 return; 6597 6598 vdbg_printk(TPACPI_DBG_BRGHT, 6599 "trying to checkpoint backlight level to NVRAM...\n"); 6600 6601 if (mutex_lock_killable(&brightness_mutex) < 0) 6602 return; 6603 6604 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6605 goto unlock; 6606 lec &= TP_EC_BACKLIGHT_LVLMSK; 6607 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6608 6609 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6610 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6611 /* NVRAM needs update */ 6612 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6613 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6614 b_nvram |= lec; 6615 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6616 dbg_printk(TPACPI_DBG_BRGHT, 6617 "updated NVRAM backlight level to %u (0x%02x)\n", 6618 (unsigned int) lec, (unsigned int) b_nvram); 6619 } else 6620 vdbg_printk(TPACPI_DBG_BRGHT, 6621 "NVRAM backlight level already is %u (0x%02x)\n", 6622 (unsigned int) lec, (unsigned int) b_nvram); 6623 6624 unlock: 6625 mutex_unlock(&brightness_mutex); 6626 } 6627 6628 6629 /* call with brightness_mutex held! */ 6630 static int tpacpi_brightness_get_raw(int *status) 6631 { 6632 u8 lec = 0; 6633 6634 switch (brightness_mode) { 6635 case TPACPI_BRGHT_MODE_UCMS_STEP: 6636 *status = tpacpi_brightness_nvram_get(); 6637 return 0; 6638 case TPACPI_BRGHT_MODE_EC: 6639 case TPACPI_BRGHT_MODE_ECNVRAM: 6640 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6641 return -EIO; 6642 *status = lec; 6643 return 0; 6644 default: 6645 return -ENXIO; 6646 } 6647 } 6648 6649 /* call with brightness_mutex held! */ 6650 /* do NOT call with illegal backlight level value */ 6651 static int tpacpi_brightness_set_ec(unsigned int value) 6652 { 6653 u8 lec = 0; 6654 6655 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6656 return -EIO; 6657 6658 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6659 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6660 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6661 return -EIO; 6662 6663 return 0; 6664 } 6665 6666 /* call with brightness_mutex held! */ 6667 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6668 { 6669 int cmos_cmd, inc; 6670 unsigned int current_value, i; 6671 6672 current_value = tpacpi_brightness_nvram_get(); 6673 6674 if (value == current_value) 6675 return 0; 6676 6677 cmos_cmd = (value > current_value) ? 6678 TP_CMOS_BRIGHTNESS_UP : 6679 TP_CMOS_BRIGHTNESS_DOWN; 6680 inc = (value > current_value) ? 1 : -1; 6681 6682 for (i = current_value; i != value; i += inc) 6683 if (issue_thinkpad_cmos_command(cmos_cmd)) 6684 return -EIO; 6685 6686 return 0; 6687 } 6688 6689 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6690 static int brightness_set(unsigned int value) 6691 { 6692 int res; 6693 6694 if (value > bright_maxlvl) 6695 return -EINVAL; 6696 6697 vdbg_printk(TPACPI_DBG_BRGHT, 6698 "set backlight level to %d\n", value); 6699 6700 res = mutex_lock_killable(&brightness_mutex); 6701 if (res < 0) 6702 return res; 6703 6704 switch (brightness_mode) { 6705 case TPACPI_BRGHT_MODE_EC: 6706 case TPACPI_BRGHT_MODE_ECNVRAM: 6707 res = tpacpi_brightness_set_ec(value); 6708 break; 6709 case TPACPI_BRGHT_MODE_UCMS_STEP: 6710 res = tpacpi_brightness_set_ucmsstep(value); 6711 break; 6712 default: 6713 res = -ENXIO; 6714 } 6715 6716 mutex_unlock(&brightness_mutex); 6717 return res; 6718 } 6719 6720 /* sysfs backlight class ----------------------------------------------- */ 6721 6722 static int brightness_update_status(struct backlight_device *bd) 6723 { 6724 unsigned int level = 6725 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6726 bd->props.power == FB_BLANK_UNBLANK) ? 6727 bd->props.brightness : 0; 6728 6729 dbg_printk(TPACPI_DBG_BRGHT, 6730 "backlight: attempt to set level to %d\n", 6731 level); 6732 6733 /* it is the backlight class's job (caller) to handle 6734 * EINTR and other errors properly */ 6735 return brightness_set(level); 6736 } 6737 6738 static int brightness_get(struct backlight_device *bd) 6739 { 6740 int status, res; 6741 6742 res = mutex_lock_killable(&brightness_mutex); 6743 if (res < 0) 6744 return 0; 6745 6746 res = tpacpi_brightness_get_raw(&status); 6747 6748 mutex_unlock(&brightness_mutex); 6749 6750 if (res < 0) 6751 return 0; 6752 6753 return status & TP_EC_BACKLIGHT_LVLMSK; 6754 } 6755 6756 static void tpacpi_brightness_notify_change(void) 6757 { 6758 backlight_force_update(ibm_backlight_device, 6759 BACKLIGHT_UPDATE_HOTKEY); 6760 } 6761 6762 static const struct backlight_ops ibm_backlight_data = { 6763 .get_brightness = brightness_get, 6764 .update_status = brightness_update_status, 6765 }; 6766 6767 /* --------------------------------------------------------------------- */ 6768 6769 /* 6770 * Call _BCL method of video device. On some ThinkPads this will 6771 * switch the firmware to the ACPI brightness control mode. 6772 */ 6773 6774 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6775 { 6776 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6777 union acpi_object *obj; 6778 struct acpi_device *device, *child; 6779 int rc; 6780 6781 if (acpi_bus_get_device(handle, &device)) 6782 return 0; 6783 6784 rc = 0; 6785 list_for_each_entry(child, &device->children, node) { 6786 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6787 NULL, &buffer); 6788 if (ACPI_FAILURE(status)) 6789 continue; 6790 6791 obj = (union acpi_object *)buffer.pointer; 6792 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6793 pr_err("Unknown _BCL data, please report this to %s\n", 6794 TPACPI_MAIL); 6795 rc = 0; 6796 } else { 6797 rc = obj->package.count; 6798 } 6799 break; 6800 } 6801 6802 kfree(buffer.pointer); 6803 return rc; 6804 } 6805 6806 6807 /* 6808 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6809 */ 6810 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6811 { 6812 acpi_handle video_device; 6813 int bcl_levels = 0; 6814 6815 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6816 if (video_device) 6817 bcl_levels = tpacpi_query_bcl_levels(video_device); 6818 6819 tp_features.bright_acpimode = (bcl_levels > 0); 6820 6821 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6822 } 6823 6824 /* 6825 * These are only useful for models that have only one possibility 6826 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6827 * these quirks. 6828 */ 6829 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6830 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6831 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6832 6833 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6834 /* Models with ATI GPUs known to require ECNVRAM mode */ 6835 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6836 6837 /* Models with ATI GPUs that can use ECNVRAM */ 6838 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6839 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6840 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6841 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6842 6843 /* Models with Intel Extreme Graphics 2 */ 6844 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6845 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6846 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6847 6848 /* Models with Intel GMA900 */ 6849 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6850 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6851 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6852 }; 6853 6854 /* 6855 * Returns < 0 for error, otherwise sets tp_features.bright_* 6856 * and bright_maxlvl. 6857 */ 6858 static void __init tpacpi_detect_brightness_capabilities(void) 6859 { 6860 unsigned int b; 6861 6862 vdbg_printk(TPACPI_DBG_INIT, 6863 "detecting firmware brightness interface capabilities\n"); 6864 6865 /* we could run a quirks check here (same table used by 6866 * brightness_init) if needed */ 6867 6868 /* 6869 * We always attempt to detect acpi support, so as to switch 6870 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6871 * going to publish a backlight interface 6872 */ 6873 b = tpacpi_check_std_acpi_brightness_support(); 6874 switch (b) { 6875 case 16: 6876 bright_maxlvl = 15; 6877 break; 6878 case 8: 6879 case 0: 6880 bright_maxlvl = 7; 6881 break; 6882 default: 6883 tp_features.bright_unkfw = 1; 6884 bright_maxlvl = b - 1; 6885 } 6886 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6887 } 6888 6889 static int __init brightness_init(struct ibm_init_struct *iibm) 6890 { 6891 struct backlight_properties props; 6892 int b; 6893 unsigned long quirks; 6894 6895 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6896 6897 mutex_init(&brightness_mutex); 6898 6899 quirks = tpacpi_check_quirks(brightness_quirk_table, 6900 ARRAY_SIZE(brightness_quirk_table)); 6901 6902 /* tpacpi_detect_brightness_capabilities() must have run already */ 6903 6904 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6905 if (tp_features.bright_unkfw) 6906 return 1; 6907 6908 if (!brightness_enable) { 6909 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6910 "brightness support disabled by module parameter\n"); 6911 return 1; 6912 } 6913 6914 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6915 if (brightness_enable > 1) { 6916 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6917 return 1; 6918 } else if (brightness_enable == 1) { 6919 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6920 return 1; 6921 } 6922 } else if (tp_features.bright_acpimode && brightness_enable > 1) { 6923 pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n"); 6924 } 6925 6926 /* 6927 * Check for module parameter bogosity, note that we 6928 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6929 * able to detect "unspecified" 6930 */ 6931 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6932 return -EINVAL; 6933 6934 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6935 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6936 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6937 if (quirks & TPACPI_BRGHT_Q_EC) 6938 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6939 else 6940 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6941 6942 dbg_printk(TPACPI_DBG_BRGHT, 6943 "driver auto-selected brightness_mode=%d\n", 6944 brightness_mode); 6945 } 6946 6947 /* Safety */ 6948 if (!tpacpi_is_ibm() && 6949 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6950 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6951 return -EINVAL; 6952 6953 if (tpacpi_brightness_get_raw(&b) < 0) 6954 return 1; 6955 6956 memset(&props, 0, sizeof(struct backlight_properties)); 6957 props.type = BACKLIGHT_PLATFORM; 6958 props.max_brightness = bright_maxlvl; 6959 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6960 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6961 NULL, NULL, 6962 &ibm_backlight_data, 6963 &props); 6964 if (IS_ERR(ibm_backlight_device)) { 6965 int rc = PTR_ERR(ibm_backlight_device); 6966 ibm_backlight_device = NULL; 6967 pr_err("Could not register backlight device\n"); 6968 return rc; 6969 } 6970 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6971 "brightness is supported\n"); 6972 6973 if (quirks & TPACPI_BRGHT_Q_ASK) { 6974 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6975 brightness_mode); 6976 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6977 TPACPI_MAIL); 6978 } 6979 6980 /* Added by mistake in early 2007. Probably useless, but it could 6981 * be working around some unknown firmware problem where the value 6982 * read at startup doesn't match the real hardware state... so leave 6983 * it in place just in case */ 6984 backlight_update_status(ibm_backlight_device); 6985 6986 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6987 "brightness: registering brightness hotkeys as change notification\n"); 6988 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6989 | TP_ACPI_HKEY_BRGHTUP_MASK 6990 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6991 return 0; 6992 } 6993 6994 static void brightness_suspend(void) 6995 { 6996 tpacpi_brightness_checkpoint_nvram(); 6997 } 6998 6999 static void brightness_shutdown(void) 7000 { 7001 tpacpi_brightness_checkpoint_nvram(); 7002 } 7003 7004 static void brightness_exit(void) 7005 { 7006 if (ibm_backlight_device) { 7007 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7008 "calling backlight_device_unregister()\n"); 7009 backlight_device_unregister(ibm_backlight_device); 7010 } 7011 7012 tpacpi_brightness_checkpoint_nvram(); 7013 } 7014 7015 static int brightness_read(struct seq_file *m) 7016 { 7017 int level; 7018 7019 level = brightness_get(NULL); 7020 if (level < 0) { 7021 seq_printf(m, "level:\t\tunreadable\n"); 7022 } else { 7023 seq_printf(m, "level:\t\t%d\n", level); 7024 seq_printf(m, "commands:\tup, down\n"); 7025 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7026 bright_maxlvl); 7027 } 7028 7029 return 0; 7030 } 7031 7032 static int brightness_write(char *buf) 7033 { 7034 int level; 7035 int rc; 7036 char *cmd; 7037 7038 level = brightness_get(NULL); 7039 if (level < 0) 7040 return level; 7041 7042 while ((cmd = next_cmd(&buf))) { 7043 if (strlencmp(cmd, "up") == 0) { 7044 if (level < bright_maxlvl) 7045 level++; 7046 } else if (strlencmp(cmd, "down") == 0) { 7047 if (level > 0) 7048 level--; 7049 } else if (sscanf(cmd, "level %d", &level) == 1 && 7050 level >= 0 && level <= bright_maxlvl) { 7051 /* new level set */ 7052 } else 7053 return -EINVAL; 7054 } 7055 7056 tpacpi_disclose_usertask("procfs brightness", 7057 "set level to %d\n", level); 7058 7059 /* 7060 * Now we know what the final level should be, so we try to set it. 7061 * Doing it this way makes the syscall restartable in case of EINTR 7062 */ 7063 rc = brightness_set(level); 7064 if (!rc && ibm_backlight_device) 7065 backlight_force_update(ibm_backlight_device, 7066 BACKLIGHT_UPDATE_SYSFS); 7067 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7068 } 7069 7070 static struct ibm_struct brightness_driver_data = { 7071 .name = "brightness", 7072 .read = brightness_read, 7073 .write = brightness_write, 7074 .exit = brightness_exit, 7075 .suspend = brightness_suspend, 7076 .shutdown = brightness_shutdown, 7077 }; 7078 7079 /************************************************************************* 7080 * Volume subdriver 7081 */ 7082 7083 /* 7084 * IBM ThinkPads have a simple volume controller with MUTE gating. 7085 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7086 * 7087 * Since the *61 series (and probably also the later *60 series), Lenovo 7088 * ThinkPads only implement the MUTE gate. 7089 * 7090 * EC register 0x30 7091 * Bit 6: MUTE (1 mutes sound) 7092 * Bit 3-0: Volume 7093 * Other bits should be zero as far as we know. 7094 * 7095 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7096 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7097 * such as bit 7 which is used to detect repeated presses of MUTE, 7098 * and we leave them unchanged. 7099 * 7100 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7101 * in response to user input. Unfortunately, this rarely works well. 7102 * The laptop changes the state of its internal MUTE gate and, on some 7103 * models, sends KEY_MUTE, causing any user code that responds to the 7104 * mute button to get confused. The hardware MUTE gate is also 7105 * unnecessary, since user code can handle the mute button without 7106 * kernel or EC help. 7107 * 7108 * To avoid confusing userspace, we simply disable all EC-based mute 7109 * and volume controls when possible. 7110 */ 7111 7112 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7113 7114 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7115 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7116 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7117 7118 #if SNDRV_CARDS <= 32 7119 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7120 #else 7121 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7122 #endif 7123 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7124 static char *alsa_id = "ThinkPadEC"; 7125 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7126 7127 struct tpacpi_alsa_data { 7128 struct snd_card *card; 7129 struct snd_ctl_elem_id *ctl_mute_id; 7130 struct snd_ctl_elem_id *ctl_vol_id; 7131 }; 7132 7133 static struct snd_card *alsa_card; 7134 7135 enum { 7136 TP_EC_AUDIO = 0x30, 7137 7138 /* TP_EC_AUDIO bits */ 7139 TP_EC_AUDIO_MUTESW = 6, 7140 7141 /* TP_EC_AUDIO bitmasks */ 7142 TP_EC_AUDIO_LVL_MSK = 0x0F, 7143 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7144 7145 /* Maximum volume */ 7146 TP_EC_VOLUME_MAX = 14, 7147 }; 7148 7149 enum tpacpi_volume_access_mode { 7150 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7151 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7152 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7153 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7154 TPACPI_VOL_MODE_MAX 7155 }; 7156 7157 enum tpacpi_volume_capabilities { 7158 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7159 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7160 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7161 TPACPI_VOL_CAP_MAX 7162 }; 7163 7164 enum tpacpi_mute_btn_mode { 7165 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7166 /* We don't know what mode 1 is. */ 7167 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7168 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7169 }; 7170 7171 static enum tpacpi_volume_access_mode volume_mode = 7172 TPACPI_VOL_MODE_MAX; 7173 7174 static enum tpacpi_volume_capabilities volume_capabilities; 7175 static bool volume_control_allowed; 7176 static bool software_mute_requested = true; 7177 static bool software_mute_active; 7178 static int software_mute_orig_mode; 7179 7180 /* 7181 * Used to syncronize writers to TP_EC_AUDIO and 7182 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7183 */ 7184 static struct mutex volume_mutex; 7185 7186 static void tpacpi_volume_checkpoint_nvram(void) 7187 { 7188 u8 lec = 0; 7189 u8 b_nvram; 7190 u8 ec_mask; 7191 7192 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7193 return; 7194 if (!volume_control_allowed) 7195 return; 7196 if (software_mute_active) 7197 return; 7198 7199 vdbg_printk(TPACPI_DBG_MIXER, 7200 "trying to checkpoint mixer state to NVRAM...\n"); 7201 7202 if (tp_features.mixer_no_level_control) 7203 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7204 else 7205 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7206 7207 if (mutex_lock_killable(&volume_mutex) < 0) 7208 return; 7209 7210 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7211 goto unlock; 7212 lec &= ec_mask; 7213 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7214 7215 if (lec != (b_nvram & ec_mask)) { 7216 /* NVRAM needs update */ 7217 b_nvram &= ~ec_mask; 7218 b_nvram |= lec; 7219 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7220 dbg_printk(TPACPI_DBG_MIXER, 7221 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7222 (unsigned int) lec, (unsigned int) b_nvram); 7223 } else { 7224 vdbg_printk(TPACPI_DBG_MIXER, 7225 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7226 (unsigned int) lec, (unsigned int) b_nvram); 7227 } 7228 7229 unlock: 7230 mutex_unlock(&volume_mutex); 7231 } 7232 7233 static int volume_get_status_ec(u8 *status) 7234 { 7235 u8 s; 7236 7237 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7238 return -EIO; 7239 7240 *status = s; 7241 7242 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7243 7244 return 0; 7245 } 7246 7247 static int volume_get_status(u8 *status) 7248 { 7249 return volume_get_status_ec(status); 7250 } 7251 7252 static int volume_set_status_ec(const u8 status) 7253 { 7254 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7255 return -EIO; 7256 7257 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7258 7259 /* 7260 * On X200s, and possibly on others, it can take a while for 7261 * reads to become correct. 7262 */ 7263 msleep(1); 7264 7265 return 0; 7266 } 7267 7268 static int volume_set_status(const u8 status) 7269 { 7270 return volume_set_status_ec(status); 7271 } 7272 7273 /* returns < 0 on error, 0 on no change, 1 on change */ 7274 static int __volume_set_mute_ec(const bool mute) 7275 { 7276 int rc; 7277 u8 s, n; 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 = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7287 s & ~TP_EC_AUDIO_MUTESW_MSK; 7288 7289 if (n != s) { 7290 rc = volume_set_status_ec(n); 7291 if (!rc) 7292 rc = 1; 7293 } 7294 7295 unlock: 7296 mutex_unlock(&volume_mutex); 7297 return rc; 7298 } 7299 7300 static int volume_alsa_set_mute(const bool mute) 7301 { 7302 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7303 (mute) ? "" : "un"); 7304 return __volume_set_mute_ec(mute); 7305 } 7306 7307 static int volume_set_mute(const bool mute) 7308 { 7309 int rc; 7310 7311 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7312 (mute) ? "" : "un"); 7313 7314 rc = __volume_set_mute_ec(mute); 7315 return (rc < 0) ? rc : 0; 7316 } 7317 7318 /* returns < 0 on error, 0 on no change, 1 on change */ 7319 static int __volume_set_volume_ec(const u8 vol) 7320 { 7321 int rc; 7322 u8 s, n; 7323 7324 if (vol > TP_EC_VOLUME_MAX) 7325 return -EINVAL; 7326 7327 if (mutex_lock_killable(&volume_mutex) < 0) 7328 return -EINTR; 7329 7330 rc = volume_get_status_ec(&s); 7331 if (rc) 7332 goto unlock; 7333 7334 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7335 7336 if (n != s) { 7337 rc = volume_set_status_ec(n); 7338 if (!rc) 7339 rc = 1; 7340 } 7341 7342 unlock: 7343 mutex_unlock(&volume_mutex); 7344 return rc; 7345 } 7346 7347 static int volume_set_software_mute(bool startup) 7348 { 7349 int result; 7350 7351 if (!tpacpi_is_lenovo()) 7352 return -ENODEV; 7353 7354 if (startup) { 7355 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7356 "HAUM", "qd")) 7357 return -EIO; 7358 7359 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7360 "Initial HAUM setting was %d\n", 7361 software_mute_orig_mode); 7362 } 7363 7364 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7365 (int)TP_EC_MUTE_BTN_NONE)) 7366 return -EIO; 7367 7368 if (result != TP_EC_MUTE_BTN_NONE) 7369 pr_warn("Unexpected SAUM result %d\n", 7370 result); 7371 7372 /* 7373 * In software mute mode, the standard codec controls take 7374 * precendence, so we unmute the ThinkPad HW switch at 7375 * startup. Just on case there are SAUM-capable ThinkPads 7376 * with level controls, set max HW volume as well. 7377 */ 7378 if (tp_features.mixer_no_level_control) 7379 result = volume_set_mute(false); 7380 else 7381 result = volume_set_status(TP_EC_VOLUME_MAX); 7382 7383 if (result != 0) 7384 pr_warn("Failed to unmute the HW mute switch\n"); 7385 7386 return 0; 7387 } 7388 7389 static void volume_exit_software_mute(void) 7390 { 7391 int r; 7392 7393 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7394 || r != software_mute_orig_mode) 7395 pr_warn("Failed to restore mute mode\n"); 7396 } 7397 7398 static int volume_alsa_set_volume(const u8 vol) 7399 { 7400 dbg_printk(TPACPI_DBG_MIXER, 7401 "ALSA: trying to set volume level to %hu\n", vol); 7402 return __volume_set_volume_ec(vol); 7403 } 7404 7405 static void volume_alsa_notify_change(void) 7406 { 7407 struct tpacpi_alsa_data *d; 7408 7409 if (alsa_card && alsa_card->private_data) { 7410 d = alsa_card->private_data; 7411 if (d->ctl_mute_id) 7412 snd_ctl_notify(alsa_card, 7413 SNDRV_CTL_EVENT_MASK_VALUE, 7414 d->ctl_mute_id); 7415 if (d->ctl_vol_id) 7416 snd_ctl_notify(alsa_card, 7417 SNDRV_CTL_EVENT_MASK_VALUE, 7418 d->ctl_vol_id); 7419 } 7420 } 7421 7422 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7423 struct snd_ctl_elem_info *uinfo) 7424 { 7425 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7426 uinfo->count = 1; 7427 uinfo->value.integer.min = 0; 7428 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7429 return 0; 7430 } 7431 7432 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7433 struct snd_ctl_elem_value *ucontrol) 7434 { 7435 u8 s; 7436 int rc; 7437 7438 rc = volume_get_status(&s); 7439 if (rc < 0) 7440 return rc; 7441 7442 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7443 return 0; 7444 } 7445 7446 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7447 struct snd_ctl_elem_value *ucontrol) 7448 { 7449 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7450 ucontrol->value.integer.value[0]); 7451 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7452 } 7453 7454 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7455 7456 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7457 struct snd_ctl_elem_value *ucontrol) 7458 { 7459 u8 s; 7460 int rc; 7461 7462 rc = volume_get_status(&s); 7463 if (rc < 0) 7464 return rc; 7465 7466 ucontrol->value.integer.value[0] = 7467 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7468 return 0; 7469 } 7470 7471 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7472 struct snd_ctl_elem_value *ucontrol) 7473 { 7474 tpacpi_disclose_usertask("ALSA", "%smute\n", 7475 ucontrol->value.integer.value[0] ? 7476 "un" : ""); 7477 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7478 } 7479 7480 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7481 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7482 .name = "Console Playback Volume", 7483 .index = 0, 7484 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7485 .info = volume_alsa_vol_info, 7486 .get = volume_alsa_vol_get, 7487 }; 7488 7489 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7490 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7491 .name = "Console Playback Switch", 7492 .index = 0, 7493 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7494 .info = volume_alsa_mute_info, 7495 .get = volume_alsa_mute_get, 7496 }; 7497 7498 static void volume_suspend(void) 7499 { 7500 tpacpi_volume_checkpoint_nvram(); 7501 } 7502 7503 static void volume_resume(void) 7504 { 7505 if (software_mute_active) { 7506 if (volume_set_software_mute(false) < 0) 7507 pr_warn("Failed to restore software mute\n"); 7508 } else { 7509 volume_alsa_notify_change(); 7510 } 7511 } 7512 7513 static void volume_shutdown(void) 7514 { 7515 tpacpi_volume_checkpoint_nvram(); 7516 } 7517 7518 static void volume_exit(void) 7519 { 7520 if (alsa_card) { 7521 snd_card_free(alsa_card); 7522 alsa_card = NULL; 7523 } 7524 7525 tpacpi_volume_checkpoint_nvram(); 7526 7527 if (software_mute_active) 7528 volume_exit_software_mute(); 7529 } 7530 7531 static int __init volume_create_alsa_mixer(void) 7532 { 7533 struct snd_card *card; 7534 struct tpacpi_alsa_data *data; 7535 struct snd_kcontrol *ctl_vol; 7536 struct snd_kcontrol *ctl_mute; 7537 int rc; 7538 7539 rc = snd_card_new(&tpacpi_pdev->dev, 7540 alsa_index, alsa_id, THIS_MODULE, 7541 sizeof(struct tpacpi_alsa_data), &card); 7542 if (rc < 0 || !card) { 7543 pr_err("Failed to create ALSA card structures: %d\n", rc); 7544 return 1; 7545 } 7546 7547 BUG_ON(!card->private_data); 7548 data = card->private_data; 7549 data->card = card; 7550 7551 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7552 sizeof(card->driver)); 7553 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7554 sizeof(card->shortname)); 7555 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7556 (thinkpad_id.ec_version_str) ? 7557 thinkpad_id.ec_version_str : "(unknown)"); 7558 snprintf(card->longname, sizeof(card->longname), 7559 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7560 (thinkpad_id.ec_version_str) ? 7561 thinkpad_id.ec_version_str : "unknown"); 7562 7563 if (volume_control_allowed) { 7564 volume_alsa_control_vol.put = volume_alsa_vol_put; 7565 volume_alsa_control_vol.access = 7566 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7567 7568 volume_alsa_control_mute.put = volume_alsa_mute_put; 7569 volume_alsa_control_mute.access = 7570 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7571 } 7572 7573 if (!tp_features.mixer_no_level_control) { 7574 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7575 rc = snd_ctl_add(card, ctl_vol); 7576 if (rc < 0) { 7577 pr_err("Failed to create ALSA volume control: %d\n", 7578 rc); 7579 goto err_exit; 7580 } 7581 data->ctl_vol_id = &ctl_vol->id; 7582 } 7583 7584 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7585 rc = snd_ctl_add(card, ctl_mute); 7586 if (rc < 0) { 7587 pr_err("Failed to create ALSA mute control: %d\n", rc); 7588 goto err_exit; 7589 } 7590 data->ctl_mute_id = &ctl_mute->id; 7591 7592 rc = snd_card_register(card); 7593 if (rc < 0) { 7594 pr_err("Failed to register ALSA card: %d\n", rc); 7595 goto err_exit; 7596 } 7597 7598 alsa_card = card; 7599 return 0; 7600 7601 err_exit: 7602 snd_card_free(card); 7603 return 1; 7604 } 7605 7606 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7607 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7608 7609 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7610 /* Whitelist volume level on all IBM by default */ 7611 { .vendor = PCI_VENDOR_ID_IBM, 7612 .bios = TPACPI_MATCH_ANY, 7613 .ec = TPACPI_MATCH_ANY, 7614 .quirks = TPACPI_VOL_Q_LEVEL }, 7615 7616 /* Lenovo models with volume control (needs confirmation) */ 7617 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7618 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7619 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7620 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7621 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7622 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7623 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7624 7625 /* Whitelist mute-only on all Lenovo by default */ 7626 { .vendor = PCI_VENDOR_ID_LENOVO, 7627 .bios = TPACPI_MATCH_ANY, 7628 .ec = TPACPI_MATCH_ANY, 7629 .quirks = TPACPI_VOL_Q_MUTEONLY } 7630 }; 7631 7632 static int __init volume_init(struct ibm_init_struct *iibm) 7633 { 7634 unsigned long quirks; 7635 int rc; 7636 7637 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7638 7639 mutex_init(&volume_mutex); 7640 7641 /* 7642 * Check for module parameter bogosity, note that we 7643 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7644 * able to detect "unspecified" 7645 */ 7646 if (volume_mode > TPACPI_VOL_MODE_MAX) 7647 return -EINVAL; 7648 7649 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7650 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7651 TPACPI_MAIL); 7652 return 1; 7653 } 7654 7655 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7656 return -EINVAL; 7657 7658 /* 7659 * The ALSA mixer is our primary interface. 7660 * When disabled, don't install the subdriver at all 7661 */ 7662 if (!alsa_enable) { 7663 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7664 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7665 return 1; 7666 } 7667 7668 quirks = tpacpi_check_quirks(volume_quirk_table, 7669 ARRAY_SIZE(volume_quirk_table)); 7670 7671 switch (volume_capabilities) { 7672 case TPACPI_VOL_CAP_AUTO: 7673 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7674 tp_features.mixer_no_level_control = 1; 7675 else if (quirks & TPACPI_VOL_Q_LEVEL) 7676 tp_features.mixer_no_level_control = 0; 7677 else 7678 return 1; /* no mixer */ 7679 break; 7680 case TPACPI_VOL_CAP_VOLMUTE: 7681 tp_features.mixer_no_level_control = 0; 7682 break; 7683 case TPACPI_VOL_CAP_MUTEONLY: 7684 tp_features.mixer_no_level_control = 1; 7685 break; 7686 default: 7687 return 1; 7688 } 7689 7690 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7691 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7692 "using user-supplied volume_capabilities=%d\n", 7693 volume_capabilities); 7694 7695 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7696 volume_mode == TPACPI_VOL_MODE_MAX) { 7697 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7698 7699 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7700 "driver auto-selected volume_mode=%d\n", 7701 volume_mode); 7702 } else { 7703 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7704 "using user-supplied volume_mode=%d\n", 7705 volume_mode); 7706 } 7707 7708 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7709 "mute is supported, volume control is %s\n", 7710 str_supported(!tp_features.mixer_no_level_control)); 7711 7712 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7713 software_mute_active = true; 7714 } else { 7715 rc = volume_create_alsa_mixer(); 7716 if (rc) { 7717 pr_err("Could not create the ALSA mixer interface\n"); 7718 return rc; 7719 } 7720 7721 pr_info("Console audio control enabled, mode: %s\n", 7722 (volume_control_allowed) ? 7723 "override (read/write)" : 7724 "monitor (read only)"); 7725 } 7726 7727 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7728 "registering volume hotkeys as change notification\n"); 7729 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7730 | TP_ACPI_HKEY_VOLUP_MASK 7731 | TP_ACPI_HKEY_VOLDWN_MASK 7732 | TP_ACPI_HKEY_MUTE_MASK); 7733 7734 return 0; 7735 } 7736 7737 static int volume_read(struct seq_file *m) 7738 { 7739 u8 status; 7740 7741 if (volume_get_status(&status) < 0) { 7742 seq_printf(m, "level:\t\tunreadable\n"); 7743 } else { 7744 if (tp_features.mixer_no_level_control) 7745 seq_printf(m, "level:\t\tunsupported\n"); 7746 else 7747 seq_printf(m, "level:\t\t%d\n", 7748 status & TP_EC_AUDIO_LVL_MSK); 7749 7750 seq_printf(m, "mute:\t\t%s\n", 7751 onoff(status, TP_EC_AUDIO_MUTESW)); 7752 7753 if (volume_control_allowed) { 7754 seq_printf(m, "commands:\tunmute, mute\n"); 7755 if (!tp_features.mixer_no_level_control) { 7756 seq_printf(m, "commands:\tup, down\n"); 7757 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7758 TP_EC_VOLUME_MAX); 7759 } 7760 } 7761 } 7762 7763 return 0; 7764 } 7765 7766 static int volume_write(char *buf) 7767 { 7768 u8 s; 7769 u8 new_level, new_mute; 7770 int l; 7771 char *cmd; 7772 int rc; 7773 7774 /* 7775 * We do allow volume control at driver startup, so that the 7776 * user can set initial state through the volume=... parameter hack. 7777 */ 7778 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7779 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7780 tp_warned.volume_ctrl_forbidden = 1; 7781 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7782 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7783 } 7784 return -EPERM; 7785 } 7786 7787 rc = volume_get_status(&s); 7788 if (rc < 0) 7789 return rc; 7790 7791 new_level = s & TP_EC_AUDIO_LVL_MSK; 7792 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7793 7794 while ((cmd = next_cmd(&buf))) { 7795 if (!tp_features.mixer_no_level_control) { 7796 if (strlencmp(cmd, "up") == 0) { 7797 if (new_mute) 7798 new_mute = 0; 7799 else if (new_level < TP_EC_VOLUME_MAX) 7800 new_level++; 7801 continue; 7802 } else if (strlencmp(cmd, "down") == 0) { 7803 if (new_mute) 7804 new_mute = 0; 7805 else if (new_level > 0) 7806 new_level--; 7807 continue; 7808 } else if (sscanf(cmd, "level %u", &l) == 1 && 7809 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7810 new_level = l; 7811 continue; 7812 } 7813 } 7814 if (strlencmp(cmd, "mute") == 0) 7815 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7816 else if (strlencmp(cmd, "unmute") == 0) 7817 new_mute = 0; 7818 else 7819 return -EINVAL; 7820 } 7821 7822 if (tp_features.mixer_no_level_control) { 7823 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7824 new_mute ? "" : "un"); 7825 rc = volume_set_mute(!!new_mute); 7826 } else { 7827 tpacpi_disclose_usertask("procfs volume", 7828 "%smute and set level to %d\n", 7829 new_mute ? "" : "un", new_level); 7830 rc = volume_set_status(new_mute | new_level); 7831 } 7832 volume_alsa_notify_change(); 7833 7834 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7835 } 7836 7837 static struct ibm_struct volume_driver_data = { 7838 .name = "volume", 7839 .read = volume_read, 7840 .write = volume_write, 7841 .exit = volume_exit, 7842 .suspend = volume_suspend, 7843 .resume = volume_resume, 7844 .shutdown = volume_shutdown, 7845 }; 7846 7847 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7848 7849 #define alsa_card NULL 7850 7851 static inline void volume_alsa_notify_change(void) 7852 { 7853 } 7854 7855 static int __init volume_init(struct ibm_init_struct *iibm) 7856 { 7857 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7858 7859 return 1; 7860 } 7861 7862 static struct ibm_struct volume_driver_data = { 7863 .name = "volume", 7864 }; 7865 7866 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7867 7868 /************************************************************************* 7869 * Fan subdriver 7870 */ 7871 7872 /* 7873 * FAN ACCESS MODES 7874 * 7875 * TPACPI_FAN_RD_ACPI_GFAN: 7876 * ACPI GFAN method: returns fan level 7877 * 7878 * see TPACPI_FAN_WR_ACPI_SFAN 7879 * EC 0x2f (HFSP) not available if GFAN exists 7880 * 7881 * TPACPI_FAN_WR_ACPI_SFAN: 7882 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7883 * 7884 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7885 * it for writing. 7886 * 7887 * TPACPI_FAN_WR_TPEC: 7888 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7889 * Supported on almost all ThinkPads 7890 * 7891 * Fan speed changes of any sort (including those caused by the 7892 * disengaged mode) are usually done slowly by the firmware as the 7893 * maximum amount of fan duty cycle change per second seems to be 7894 * limited. 7895 * 7896 * Reading is not available if GFAN exists. 7897 * Writing is not available if SFAN exists. 7898 * 7899 * Bits 7900 * 7 automatic mode engaged; 7901 * (default operation mode of the ThinkPad) 7902 * fan level is ignored in this mode. 7903 * 6 full speed mode (takes precedence over bit 7); 7904 * not available on all thinkpads. May disable 7905 * the tachometer while the fan controller ramps up 7906 * the speed (which can take up to a few *minutes*). 7907 * Speeds up fan to 100% duty-cycle, which is far above 7908 * the standard RPM levels. It is not impossible that 7909 * it could cause hardware damage. 7910 * 5-3 unused in some models. Extra bits for fan level 7911 * in others, but still useless as all values above 7912 * 7 map to the same speed as level 7 in these models. 7913 * 2-0 fan level (0..7 usually) 7914 * 0x00 = stop 7915 * 0x07 = max (set when temperatures critical) 7916 * Some ThinkPads may have other levels, see 7917 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7918 * 7919 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7920 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7921 * does so, its initial value is meaningless (0x07). 7922 * 7923 * For firmware bugs, refer to: 7924 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7925 * 7926 * ---- 7927 * 7928 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7929 * Main fan tachometer reading (in RPM) 7930 * 7931 * This register is present on all ThinkPads with a new-style EC, and 7932 * it is known not to be present on the A21m/e, and T22, as there is 7933 * something else in offset 0x84 according to the ACPI DSDT. Other 7934 * ThinkPads from this same time period (and earlier) probably lack the 7935 * tachometer as well. 7936 * 7937 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7938 * was never fixed by IBM to report the EC firmware version string 7939 * probably support the tachometer (like the early X models), so 7940 * detecting it is quite hard. We need more data to know for sure. 7941 * 7942 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7943 * might result. 7944 * 7945 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7946 * mode. 7947 * 7948 * For firmware bugs, refer to: 7949 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7950 * 7951 * ---- 7952 * 7953 * ThinkPad EC register 0x31 bit 0 (only on select models) 7954 * 7955 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7956 * show the speed of the main fan. When bit 0 of EC register 0x31 7957 * is one, the tachometer registers show the speed of the auxiliary 7958 * fan. 7959 * 7960 * Fan control seems to affect both fans, regardless of the state 7961 * of this bit. 7962 * 7963 * So far, only the firmware for the X60/X61 non-tablet versions 7964 * seem to support this (firmware TP-7M). 7965 * 7966 * TPACPI_FAN_WR_ACPI_FANS: 7967 * ThinkPad X31, X40, X41. Not available in the X60. 7968 * 7969 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7970 * high speed. ACPI DSDT seems to map these three speeds to levels 7971 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7972 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7973 * 7974 * The speeds are stored on handles 7975 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7976 * 7977 * There are three default speed sets, accessible as handles: 7978 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7979 * 7980 * ACPI DSDT switches which set is in use depending on various 7981 * factors. 7982 * 7983 * TPACPI_FAN_WR_TPEC is also available and should be used to 7984 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7985 * but the ACPI tables just mention level 7. 7986 */ 7987 7988 enum { /* Fan control constants */ 7989 fan_status_offset = 0x2f, /* EC register 0x2f */ 7990 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7991 * 0x84 must be read before 0x85 */ 7992 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7993 bit 0 selects which fan is active */ 7994 7995 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7996 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7997 7998 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7999 }; 8000 8001 enum fan_status_access_mode { 8002 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8003 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8004 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8005 }; 8006 8007 enum fan_control_access_mode { 8008 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8009 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8010 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8011 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8012 }; 8013 8014 enum fan_control_commands { 8015 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8016 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8017 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8018 * and also watchdog cmd */ 8019 }; 8020 8021 static bool fan_control_allowed; 8022 8023 static enum fan_status_access_mode fan_status_access_mode; 8024 static enum fan_control_access_mode fan_control_access_mode; 8025 static enum fan_control_commands fan_control_commands; 8026 8027 static u8 fan_control_initial_status; 8028 static u8 fan_control_desired_level; 8029 static u8 fan_control_resume_level; 8030 static int fan_watchdog_maxinterval; 8031 8032 static struct mutex fan_mutex; 8033 8034 static void fan_watchdog_fire(struct work_struct *ignored); 8035 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8036 8037 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8038 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8039 "\\FSPD", /* 600e/x, 770e, 770x */ 8040 ); /* all others */ 8041 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8042 "JFNS", /* 770x-JL */ 8043 ); /* all others */ 8044 8045 /* 8046 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8047 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8048 * be in auto mode (0x80). 8049 * 8050 * This is corrected by any write to HFSP either by the driver, or 8051 * by the firmware. 8052 * 8053 * We assume 0x07 really means auto mode while this quirk is active, 8054 * as this is far more likely than the ThinkPad being in level 7, 8055 * which is only used by the firmware during thermal emergencies. 8056 * 8057 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8058 * TP-70 (T43, R52), which are known to be buggy. 8059 */ 8060 8061 static void fan_quirk1_setup(void) 8062 { 8063 if (fan_control_initial_status == 0x07) { 8064 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8065 tp_features.fan_ctrl_status_undef = 1; 8066 } 8067 } 8068 8069 static void fan_quirk1_handle(u8 *fan_status) 8070 { 8071 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8072 if (*fan_status != fan_control_initial_status) { 8073 /* something changed the HFSP regisnter since 8074 * driver init time, so it is not undefined 8075 * anymore */ 8076 tp_features.fan_ctrl_status_undef = 0; 8077 } else { 8078 /* Return most likely status. In fact, it 8079 * might be the only possible status */ 8080 *fan_status = TP_EC_FAN_AUTO; 8081 } 8082 } 8083 } 8084 8085 /* Select main fan on X60/X61, NOOP on others */ 8086 static bool fan_select_fan1(void) 8087 { 8088 if (tp_features.second_fan) { 8089 u8 val; 8090 8091 if (ec_read(fan_select_offset, &val) < 0) 8092 return false; 8093 val &= 0xFEU; 8094 if (ec_write(fan_select_offset, val) < 0) 8095 return false; 8096 } 8097 return true; 8098 } 8099 8100 /* Select secondary fan on X60/X61 */ 8101 static bool fan_select_fan2(void) 8102 { 8103 u8 val; 8104 8105 if (!tp_features.second_fan) 8106 return false; 8107 8108 if (ec_read(fan_select_offset, &val) < 0) 8109 return false; 8110 val |= 0x01U; 8111 if (ec_write(fan_select_offset, val) < 0) 8112 return false; 8113 8114 return true; 8115 } 8116 8117 /* 8118 * Call with fan_mutex held 8119 */ 8120 static void fan_update_desired_level(u8 status) 8121 { 8122 if ((status & 8123 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8124 if (status > 7) 8125 fan_control_desired_level = 7; 8126 else 8127 fan_control_desired_level = status; 8128 } 8129 } 8130 8131 static int fan_get_status(u8 *status) 8132 { 8133 u8 s; 8134 8135 /* TODO: 8136 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8137 8138 switch (fan_status_access_mode) { 8139 case TPACPI_FAN_RD_ACPI_GFAN: { 8140 /* 570, 600e/x, 770e, 770x */ 8141 int res; 8142 8143 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8144 return -EIO; 8145 8146 if (likely(status)) 8147 *status = res & 0x07; 8148 8149 break; 8150 } 8151 case TPACPI_FAN_RD_TPEC: 8152 /* all except 570, 600e/x, 770e, 770x */ 8153 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8154 return -EIO; 8155 8156 if (likely(status)) { 8157 *status = s; 8158 fan_quirk1_handle(status); 8159 } 8160 8161 break; 8162 8163 default: 8164 return -ENXIO; 8165 } 8166 8167 return 0; 8168 } 8169 8170 static int fan_get_status_safe(u8 *status) 8171 { 8172 int rc; 8173 u8 s; 8174 8175 if (mutex_lock_killable(&fan_mutex)) 8176 return -ERESTARTSYS; 8177 rc = fan_get_status(&s); 8178 if (!rc) 8179 fan_update_desired_level(s); 8180 mutex_unlock(&fan_mutex); 8181 8182 if (rc) 8183 return rc; 8184 if (status) 8185 *status = s; 8186 8187 return 0; 8188 } 8189 8190 static int fan_get_speed(unsigned int *speed) 8191 { 8192 u8 hi, lo; 8193 8194 switch (fan_status_access_mode) { 8195 case TPACPI_FAN_RD_TPEC: 8196 /* all except 570, 600e/x, 770e, 770x */ 8197 if (unlikely(!fan_select_fan1())) 8198 return -EIO; 8199 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8200 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8201 return -EIO; 8202 8203 if (likely(speed)) 8204 *speed = (hi << 8) | lo; 8205 8206 break; 8207 8208 default: 8209 return -ENXIO; 8210 } 8211 8212 return 0; 8213 } 8214 8215 static int fan2_get_speed(unsigned int *speed) 8216 { 8217 u8 hi, lo; 8218 bool rc; 8219 8220 switch (fan_status_access_mode) { 8221 case TPACPI_FAN_RD_TPEC: 8222 /* all except 570, 600e/x, 770e, 770x */ 8223 if (unlikely(!fan_select_fan2())) 8224 return -EIO; 8225 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8226 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8227 fan_select_fan1(); /* play it safe */ 8228 if (rc) 8229 return -EIO; 8230 8231 if (likely(speed)) 8232 *speed = (hi << 8) | lo; 8233 8234 break; 8235 8236 default: 8237 return -ENXIO; 8238 } 8239 8240 return 0; 8241 } 8242 8243 static int fan_set_level(int level) 8244 { 8245 if (!fan_control_allowed) 8246 return -EPERM; 8247 8248 switch (fan_control_access_mode) { 8249 case TPACPI_FAN_WR_ACPI_SFAN: 8250 if (level >= 0 && level <= 7) { 8251 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8252 return -EIO; 8253 } else 8254 return -EINVAL; 8255 break; 8256 8257 case TPACPI_FAN_WR_ACPI_FANS: 8258 case TPACPI_FAN_WR_TPEC: 8259 if (!(level & TP_EC_FAN_AUTO) && 8260 !(level & TP_EC_FAN_FULLSPEED) && 8261 ((level < 0) || (level > 7))) 8262 return -EINVAL; 8263 8264 /* safety net should the EC not support AUTO 8265 * or FULLSPEED mode bits and just ignore them */ 8266 if (level & TP_EC_FAN_FULLSPEED) 8267 level |= 7; /* safety min speed 7 */ 8268 else if (level & TP_EC_FAN_AUTO) 8269 level |= 4; /* safety min speed 4 */ 8270 8271 if (!acpi_ec_write(fan_status_offset, level)) 8272 return -EIO; 8273 else 8274 tp_features.fan_ctrl_status_undef = 0; 8275 break; 8276 8277 default: 8278 return -ENXIO; 8279 } 8280 8281 vdbg_printk(TPACPI_DBG_FAN, 8282 "fan control: set fan control register to 0x%02x\n", level); 8283 return 0; 8284 } 8285 8286 static int fan_set_level_safe(int level) 8287 { 8288 int rc; 8289 8290 if (!fan_control_allowed) 8291 return -EPERM; 8292 8293 if (mutex_lock_killable(&fan_mutex)) 8294 return -ERESTARTSYS; 8295 8296 if (level == TPACPI_FAN_LAST_LEVEL) 8297 level = fan_control_desired_level; 8298 8299 rc = fan_set_level(level); 8300 if (!rc) 8301 fan_update_desired_level(level); 8302 8303 mutex_unlock(&fan_mutex); 8304 return rc; 8305 } 8306 8307 static int fan_set_enable(void) 8308 { 8309 u8 s; 8310 int rc; 8311 8312 if (!fan_control_allowed) 8313 return -EPERM; 8314 8315 if (mutex_lock_killable(&fan_mutex)) 8316 return -ERESTARTSYS; 8317 8318 switch (fan_control_access_mode) { 8319 case TPACPI_FAN_WR_ACPI_FANS: 8320 case TPACPI_FAN_WR_TPEC: 8321 rc = fan_get_status(&s); 8322 if (rc < 0) 8323 break; 8324 8325 /* Don't go out of emergency fan mode */ 8326 if (s != 7) { 8327 s &= 0x07; 8328 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8329 } 8330 8331 if (!acpi_ec_write(fan_status_offset, s)) 8332 rc = -EIO; 8333 else { 8334 tp_features.fan_ctrl_status_undef = 0; 8335 rc = 0; 8336 } 8337 break; 8338 8339 case TPACPI_FAN_WR_ACPI_SFAN: 8340 rc = fan_get_status(&s); 8341 if (rc < 0) 8342 break; 8343 8344 s &= 0x07; 8345 8346 /* Set fan to at least level 4 */ 8347 s |= 4; 8348 8349 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8350 rc = -EIO; 8351 else 8352 rc = 0; 8353 break; 8354 8355 default: 8356 rc = -ENXIO; 8357 } 8358 8359 mutex_unlock(&fan_mutex); 8360 8361 if (!rc) 8362 vdbg_printk(TPACPI_DBG_FAN, 8363 "fan control: set fan control register to 0x%02x\n", 8364 s); 8365 return rc; 8366 } 8367 8368 static int fan_set_disable(void) 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 case TPACPI_FAN_WR_TPEC: 8382 if (!acpi_ec_write(fan_status_offset, 0x00)) 8383 rc = -EIO; 8384 else { 8385 fan_control_desired_level = 0; 8386 tp_features.fan_ctrl_status_undef = 0; 8387 } 8388 break; 8389 8390 case TPACPI_FAN_WR_ACPI_SFAN: 8391 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8392 rc = -EIO; 8393 else 8394 fan_control_desired_level = 0; 8395 break; 8396 8397 default: 8398 rc = -ENXIO; 8399 } 8400 8401 if (!rc) 8402 vdbg_printk(TPACPI_DBG_FAN, 8403 "fan control: set fan control register to 0\n"); 8404 8405 mutex_unlock(&fan_mutex); 8406 return rc; 8407 } 8408 8409 static int fan_set_speed(int speed) 8410 { 8411 int rc; 8412 8413 if (!fan_control_allowed) 8414 return -EPERM; 8415 8416 if (mutex_lock_killable(&fan_mutex)) 8417 return -ERESTARTSYS; 8418 8419 rc = 0; 8420 switch (fan_control_access_mode) { 8421 case TPACPI_FAN_WR_ACPI_FANS: 8422 if (speed >= 0 && speed <= 65535) { 8423 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8424 speed, speed, speed)) 8425 rc = -EIO; 8426 } else 8427 rc = -EINVAL; 8428 break; 8429 8430 default: 8431 rc = -ENXIO; 8432 } 8433 8434 mutex_unlock(&fan_mutex); 8435 return rc; 8436 } 8437 8438 static void fan_watchdog_reset(void) 8439 { 8440 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8441 return; 8442 8443 if (fan_watchdog_maxinterval > 0 && 8444 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8445 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8446 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8447 else 8448 cancel_delayed_work(&fan_watchdog_task); 8449 } 8450 8451 static void fan_watchdog_fire(struct work_struct *ignored) 8452 { 8453 int rc; 8454 8455 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8456 return; 8457 8458 pr_notice("fan watchdog: enabling fan\n"); 8459 rc = fan_set_enable(); 8460 if (rc < 0) { 8461 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8462 rc); 8463 /* reschedule for later */ 8464 fan_watchdog_reset(); 8465 } 8466 } 8467 8468 /* 8469 * SYSFS fan layout: hwmon compatible (device) 8470 * 8471 * pwm*_enable: 8472 * 0: "disengaged" mode 8473 * 1: manual mode 8474 * 2: native EC "auto" mode (recommended, hardware default) 8475 * 8476 * pwm*: set speed in manual mode, ignored otherwise. 8477 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8478 * interpolation. 8479 * 8480 * fan*_input: tachometer reading, RPM 8481 * 8482 * 8483 * SYSFS fan layout: extensions 8484 * 8485 * fan_watchdog (driver): 8486 * fan watchdog interval in seconds, 0 disables (default), max 120 8487 */ 8488 8489 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8490 static ssize_t fan_pwm1_enable_show(struct device *dev, 8491 struct device_attribute *attr, 8492 char *buf) 8493 { 8494 int res, mode; 8495 u8 status; 8496 8497 res = fan_get_status_safe(&status); 8498 if (res) 8499 return res; 8500 8501 if (status & TP_EC_FAN_FULLSPEED) { 8502 mode = 0; 8503 } else if (status & TP_EC_FAN_AUTO) { 8504 mode = 2; 8505 } else 8506 mode = 1; 8507 8508 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8509 } 8510 8511 static ssize_t fan_pwm1_enable_store(struct device *dev, 8512 struct device_attribute *attr, 8513 const char *buf, size_t count) 8514 { 8515 unsigned long t; 8516 int res, level; 8517 8518 if (parse_strtoul(buf, 2, &t)) 8519 return -EINVAL; 8520 8521 tpacpi_disclose_usertask("hwmon pwm1_enable", 8522 "set fan mode to %lu\n", t); 8523 8524 switch (t) { 8525 case 0: 8526 level = TP_EC_FAN_FULLSPEED; 8527 break; 8528 case 1: 8529 level = TPACPI_FAN_LAST_LEVEL; 8530 break; 8531 case 2: 8532 level = TP_EC_FAN_AUTO; 8533 break; 8534 case 3: 8535 /* reserved for software-controlled auto mode */ 8536 return -ENOSYS; 8537 default: 8538 return -EINVAL; 8539 } 8540 8541 res = fan_set_level_safe(level); 8542 if (res == -ENXIO) 8543 return -EINVAL; 8544 else if (res < 0) 8545 return res; 8546 8547 fan_watchdog_reset(); 8548 8549 return count; 8550 } 8551 8552 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8553 fan_pwm1_enable_show, fan_pwm1_enable_store); 8554 8555 /* sysfs fan pwm1 ------------------------------------------------------ */ 8556 static ssize_t fan_pwm1_show(struct device *dev, 8557 struct device_attribute *attr, 8558 char *buf) 8559 { 8560 int res; 8561 u8 status; 8562 8563 res = fan_get_status_safe(&status); 8564 if (res) 8565 return res; 8566 8567 if ((status & 8568 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8569 status = fan_control_desired_level; 8570 8571 if (status > 7) 8572 status = 7; 8573 8574 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8575 } 8576 8577 static ssize_t fan_pwm1_store(struct device *dev, 8578 struct device_attribute *attr, 8579 const char *buf, size_t count) 8580 { 8581 unsigned long s; 8582 int rc; 8583 u8 status, newlevel; 8584 8585 if (parse_strtoul(buf, 255, &s)) 8586 return -EINVAL; 8587 8588 tpacpi_disclose_usertask("hwmon pwm1", 8589 "set fan speed to %lu\n", s); 8590 8591 /* scale down from 0-255 to 0-7 */ 8592 newlevel = (s >> 5) & 0x07; 8593 8594 if (mutex_lock_killable(&fan_mutex)) 8595 return -ERESTARTSYS; 8596 8597 rc = fan_get_status(&status); 8598 if (!rc && (status & 8599 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8600 rc = fan_set_level(newlevel); 8601 if (rc == -ENXIO) 8602 rc = -EINVAL; 8603 else if (!rc) { 8604 fan_update_desired_level(newlevel); 8605 fan_watchdog_reset(); 8606 } 8607 } 8608 8609 mutex_unlock(&fan_mutex); 8610 return (rc) ? rc : count; 8611 } 8612 8613 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8614 8615 /* sysfs fan fan1_input ------------------------------------------------ */ 8616 static ssize_t fan_fan1_input_show(struct device *dev, 8617 struct device_attribute *attr, 8618 char *buf) 8619 { 8620 int res; 8621 unsigned int speed; 8622 8623 res = fan_get_speed(&speed); 8624 if (res < 0) 8625 return res; 8626 8627 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8628 } 8629 8630 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8631 8632 /* sysfs fan fan2_input ------------------------------------------------ */ 8633 static ssize_t fan_fan2_input_show(struct device *dev, 8634 struct device_attribute *attr, 8635 char *buf) 8636 { 8637 int res; 8638 unsigned int speed; 8639 8640 res = fan2_get_speed(&speed); 8641 if (res < 0) 8642 return res; 8643 8644 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8645 } 8646 8647 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8648 8649 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8650 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8651 { 8652 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8653 } 8654 8655 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8656 size_t count) 8657 { 8658 unsigned long t; 8659 8660 if (parse_strtoul(buf, 120, &t)) 8661 return -EINVAL; 8662 8663 if (!fan_control_allowed) 8664 return -EPERM; 8665 8666 fan_watchdog_maxinterval = t; 8667 fan_watchdog_reset(); 8668 8669 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8670 8671 return count; 8672 } 8673 static DRIVER_ATTR_RW(fan_watchdog); 8674 8675 /* --------------------------------------------------------------------- */ 8676 static struct attribute *fan_attributes[] = { 8677 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8678 &dev_attr_fan1_input.attr, 8679 NULL, /* for fan2_input */ 8680 NULL 8681 }; 8682 8683 static const struct attribute_group fan_attr_group = { 8684 .attrs = fan_attributes, 8685 }; 8686 8687 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8688 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8689 8690 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \ 8691 { .vendor = PCI_VENDOR_ID_IBM, \ 8692 .bios = TPACPI_MATCH_ANY, \ 8693 .ec = TPID(__id1, __id2), \ 8694 .quirks = __quirks } 8695 8696 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \ 8697 { .vendor = PCI_VENDOR_ID_LENOVO, \ 8698 .bios = TPACPI_MATCH_ANY, \ 8699 .ec = TPID(__id1, __id2), \ 8700 .quirks = __quirks } 8701 8702 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8703 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), 8704 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), 8705 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), 8706 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), 8707 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), 8708 }; 8709 8710 #undef TPACPI_FAN_QL 8711 #undef TPACPI_FAN_QI 8712 8713 static int __init fan_init(struct ibm_init_struct *iibm) 8714 { 8715 int rc; 8716 unsigned long quirks; 8717 8718 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8719 "initializing fan subdriver\n"); 8720 8721 mutex_init(&fan_mutex); 8722 fan_status_access_mode = TPACPI_FAN_NONE; 8723 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8724 fan_control_commands = 0; 8725 fan_watchdog_maxinterval = 0; 8726 tp_features.fan_ctrl_status_undef = 0; 8727 tp_features.second_fan = 0; 8728 fan_control_desired_level = 7; 8729 8730 if (tpacpi_is_ibm()) { 8731 TPACPI_ACPIHANDLE_INIT(fans); 8732 TPACPI_ACPIHANDLE_INIT(gfan); 8733 TPACPI_ACPIHANDLE_INIT(sfan); 8734 } 8735 8736 quirks = tpacpi_check_quirks(fan_quirk_table, 8737 ARRAY_SIZE(fan_quirk_table)); 8738 8739 if (gfan_handle) { 8740 /* 570, 600e/x, 770e, 770x */ 8741 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8742 } else { 8743 /* all other ThinkPads: note that even old-style 8744 * ThinkPad ECs supports the fan control register */ 8745 if (likely(acpi_ec_read(fan_status_offset, 8746 &fan_control_initial_status))) { 8747 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8748 if (quirks & TPACPI_FAN_Q1) 8749 fan_quirk1_setup(); 8750 if (quirks & TPACPI_FAN_2FAN) { 8751 tp_features.second_fan = 1; 8752 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8753 "secondary fan support enabled\n"); 8754 } 8755 } else { 8756 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8757 return 1; 8758 } 8759 } 8760 8761 if (sfan_handle) { 8762 /* 570, 770x-JL */ 8763 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8764 fan_control_commands |= 8765 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8766 } else { 8767 if (!gfan_handle) { 8768 /* gfan without sfan means no fan control */ 8769 /* all other models implement TP EC 0x2f control */ 8770 8771 if (fans_handle) { 8772 /* X31, X40, X41 */ 8773 fan_control_access_mode = 8774 TPACPI_FAN_WR_ACPI_FANS; 8775 fan_control_commands |= 8776 TPACPI_FAN_CMD_SPEED | 8777 TPACPI_FAN_CMD_LEVEL | 8778 TPACPI_FAN_CMD_ENABLE; 8779 } else { 8780 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8781 fan_control_commands |= 8782 TPACPI_FAN_CMD_LEVEL | 8783 TPACPI_FAN_CMD_ENABLE; 8784 } 8785 } 8786 } 8787 8788 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8789 "fan is %s, modes %d, %d\n", 8790 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8791 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8792 fan_status_access_mode, fan_control_access_mode); 8793 8794 /* fan control master switch */ 8795 if (!fan_control_allowed) { 8796 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8797 fan_control_commands = 0; 8798 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8799 "fan control features disabled by parameter\n"); 8800 } 8801 8802 /* update fan_control_desired_level */ 8803 if (fan_status_access_mode != TPACPI_FAN_NONE) 8804 fan_get_status_safe(NULL); 8805 8806 if (fan_status_access_mode != TPACPI_FAN_NONE || 8807 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8808 if (tp_features.second_fan) { 8809 /* attach second fan tachometer */ 8810 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8811 &dev_attr_fan2_input.attr; 8812 } 8813 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8814 &fan_attr_group); 8815 if (rc < 0) 8816 return rc; 8817 8818 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8819 &driver_attr_fan_watchdog); 8820 if (rc < 0) { 8821 sysfs_remove_group(&tpacpi_hwmon->kobj, 8822 &fan_attr_group); 8823 return rc; 8824 } 8825 return 0; 8826 } else 8827 return 1; 8828 } 8829 8830 static void fan_exit(void) 8831 { 8832 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8833 "cancelling any pending fan watchdog tasks\n"); 8834 8835 /* FIXME: can we really do this unconditionally? */ 8836 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8837 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8838 &driver_attr_fan_watchdog); 8839 8840 cancel_delayed_work(&fan_watchdog_task); 8841 flush_workqueue(tpacpi_wq); 8842 } 8843 8844 static void fan_suspend(void) 8845 { 8846 int rc; 8847 8848 if (!fan_control_allowed) 8849 return; 8850 8851 /* Store fan status in cache */ 8852 fan_control_resume_level = 0; 8853 rc = fan_get_status_safe(&fan_control_resume_level); 8854 if (rc < 0) 8855 pr_notice("failed to read fan level for later restore during resume: %d\n", 8856 rc); 8857 8858 /* if it is undefined, don't attempt to restore it. 8859 * KEEP THIS LAST */ 8860 if (tp_features.fan_ctrl_status_undef) 8861 fan_control_resume_level = 0; 8862 } 8863 8864 static void fan_resume(void) 8865 { 8866 u8 current_level = 7; 8867 bool do_set = false; 8868 int rc; 8869 8870 /* DSDT *always* updates status on resume */ 8871 tp_features.fan_ctrl_status_undef = 0; 8872 8873 if (!fan_control_allowed || 8874 !fan_control_resume_level || 8875 (fan_get_status_safe(¤t_level) < 0)) 8876 return; 8877 8878 switch (fan_control_access_mode) { 8879 case TPACPI_FAN_WR_ACPI_SFAN: 8880 /* never decrease fan level */ 8881 do_set = (fan_control_resume_level > current_level); 8882 break; 8883 case TPACPI_FAN_WR_ACPI_FANS: 8884 case TPACPI_FAN_WR_TPEC: 8885 /* never decrease fan level, scale is: 8886 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8887 * 8888 * We expect the firmware to set either 7 or AUTO, but we 8889 * handle FULLSPEED out of paranoia. 8890 * 8891 * So, we can safely only restore FULLSPEED or 7, anything 8892 * else could slow the fan. Restoring AUTO is useless, at 8893 * best that's exactly what the DSDT already set (it is the 8894 * slower it uses). 8895 * 8896 * Always keep in mind that the DSDT *will* have set the 8897 * fans to what the vendor supposes is the best level. We 8898 * muck with it only to speed the fan up. 8899 */ 8900 if (fan_control_resume_level != 7 && 8901 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8902 return; 8903 else 8904 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8905 (current_level != fan_control_resume_level); 8906 break; 8907 default: 8908 return; 8909 } 8910 if (do_set) { 8911 pr_notice("restoring fan level to 0x%02x\n", 8912 fan_control_resume_level); 8913 rc = fan_set_level_safe(fan_control_resume_level); 8914 if (rc < 0) 8915 pr_notice("failed to restore fan level: %d\n", rc); 8916 } 8917 } 8918 8919 static int fan_read(struct seq_file *m) 8920 { 8921 int rc; 8922 u8 status; 8923 unsigned int speed = 0; 8924 8925 switch (fan_status_access_mode) { 8926 case TPACPI_FAN_RD_ACPI_GFAN: 8927 /* 570, 600e/x, 770e, 770x */ 8928 rc = fan_get_status_safe(&status); 8929 if (rc < 0) 8930 return rc; 8931 8932 seq_printf(m, "status:\t\t%s\n" 8933 "level:\t\t%d\n", 8934 (status != 0) ? "enabled" : "disabled", status); 8935 break; 8936 8937 case TPACPI_FAN_RD_TPEC: 8938 /* all except 570, 600e/x, 770e, 770x */ 8939 rc = fan_get_status_safe(&status); 8940 if (rc < 0) 8941 return rc; 8942 8943 seq_printf(m, "status:\t\t%s\n", 8944 (status != 0) ? "enabled" : "disabled"); 8945 8946 rc = fan_get_speed(&speed); 8947 if (rc < 0) 8948 return rc; 8949 8950 seq_printf(m, "speed:\t\t%d\n", speed); 8951 8952 if (status & TP_EC_FAN_FULLSPEED) 8953 /* Disengaged mode takes precedence */ 8954 seq_printf(m, "level:\t\tdisengaged\n"); 8955 else if (status & TP_EC_FAN_AUTO) 8956 seq_printf(m, "level:\t\tauto\n"); 8957 else 8958 seq_printf(m, "level:\t\t%d\n", status); 8959 break; 8960 8961 case TPACPI_FAN_NONE: 8962 default: 8963 seq_printf(m, "status:\t\tnot supported\n"); 8964 } 8965 8966 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 8967 seq_printf(m, "commands:\tlevel <level>"); 8968 8969 switch (fan_control_access_mode) { 8970 case TPACPI_FAN_WR_ACPI_SFAN: 8971 seq_printf(m, " (<level> is 0-7)\n"); 8972 break; 8973 8974 default: 8975 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 8976 break; 8977 } 8978 } 8979 8980 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 8981 seq_printf(m, "commands:\tenable, disable\n" 8982 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 8983 8984 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 8985 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 8986 8987 return 0; 8988 } 8989 8990 static int fan_write_cmd_level(const char *cmd, int *rc) 8991 { 8992 int level; 8993 8994 if (strlencmp(cmd, "level auto") == 0) 8995 level = TP_EC_FAN_AUTO; 8996 else if ((strlencmp(cmd, "level disengaged") == 0) | 8997 (strlencmp(cmd, "level full-speed") == 0)) 8998 level = TP_EC_FAN_FULLSPEED; 8999 else if (sscanf(cmd, "level %d", &level) != 1) 9000 return 0; 9001 9002 *rc = fan_set_level_safe(level); 9003 if (*rc == -ENXIO) 9004 pr_err("level command accepted for unsupported access mode %d\n", 9005 fan_control_access_mode); 9006 else if (!*rc) 9007 tpacpi_disclose_usertask("procfs fan", 9008 "set level to %d\n", level); 9009 9010 return 1; 9011 } 9012 9013 static int fan_write_cmd_enable(const char *cmd, int *rc) 9014 { 9015 if (strlencmp(cmd, "enable") != 0) 9016 return 0; 9017 9018 *rc = fan_set_enable(); 9019 if (*rc == -ENXIO) 9020 pr_err("enable command accepted for unsupported access mode %d\n", 9021 fan_control_access_mode); 9022 else if (!*rc) 9023 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9024 9025 return 1; 9026 } 9027 9028 static int fan_write_cmd_disable(const char *cmd, int *rc) 9029 { 9030 if (strlencmp(cmd, "disable") != 0) 9031 return 0; 9032 9033 *rc = fan_set_disable(); 9034 if (*rc == -ENXIO) 9035 pr_err("disable command accepted for unsupported access mode %d\n", 9036 fan_control_access_mode); 9037 else if (!*rc) 9038 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9039 9040 return 1; 9041 } 9042 9043 static int fan_write_cmd_speed(const char *cmd, int *rc) 9044 { 9045 int speed; 9046 9047 /* TODO: 9048 * Support speed <low> <medium> <high> ? */ 9049 9050 if (sscanf(cmd, "speed %d", &speed) != 1) 9051 return 0; 9052 9053 *rc = fan_set_speed(speed); 9054 if (*rc == -ENXIO) 9055 pr_err("speed command accepted for unsupported access mode %d\n", 9056 fan_control_access_mode); 9057 else if (!*rc) 9058 tpacpi_disclose_usertask("procfs fan", 9059 "set speed to %d\n", speed); 9060 9061 return 1; 9062 } 9063 9064 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9065 { 9066 int interval; 9067 9068 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9069 return 0; 9070 9071 if (interval < 0 || interval > 120) 9072 *rc = -EINVAL; 9073 else { 9074 fan_watchdog_maxinterval = interval; 9075 tpacpi_disclose_usertask("procfs fan", 9076 "set watchdog timer to %d\n", 9077 interval); 9078 } 9079 9080 return 1; 9081 } 9082 9083 static int fan_write(char *buf) 9084 { 9085 char *cmd; 9086 int rc = 0; 9087 9088 while (!rc && (cmd = next_cmd(&buf))) { 9089 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9090 fan_write_cmd_level(cmd, &rc)) && 9091 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9092 (fan_write_cmd_enable(cmd, &rc) || 9093 fan_write_cmd_disable(cmd, &rc) || 9094 fan_write_cmd_watchdog(cmd, &rc))) && 9095 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9096 fan_write_cmd_speed(cmd, &rc)) 9097 ) 9098 rc = -EINVAL; 9099 else if (!rc) 9100 fan_watchdog_reset(); 9101 } 9102 9103 return rc; 9104 } 9105 9106 static struct ibm_struct fan_driver_data = { 9107 .name = "fan", 9108 .read = fan_read, 9109 .write = fan_write, 9110 .exit = fan_exit, 9111 .suspend = fan_suspend, 9112 .resume = fan_resume, 9113 }; 9114 9115 /************************************************************************* 9116 * Mute LED subdriver 9117 */ 9118 9119 9120 struct tp_led_table { 9121 acpi_string name; 9122 int on_value; 9123 int off_value; 9124 int state; 9125 }; 9126 9127 static struct tp_led_table led_tables[] = { 9128 [TPACPI_LED_MUTE] = { 9129 .name = "SSMS", 9130 .on_value = 1, 9131 .off_value = 0, 9132 }, 9133 [TPACPI_LED_MICMUTE] = { 9134 .name = "MMTS", 9135 .on_value = 2, 9136 .off_value = 0, 9137 }, 9138 }; 9139 9140 static int mute_led_on_off(struct tp_led_table *t, bool state) 9141 { 9142 acpi_handle temp; 9143 int output; 9144 9145 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9146 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9147 return -EIO; 9148 } 9149 9150 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9151 state ? t->on_value : t->off_value)) 9152 return -EIO; 9153 9154 t->state = state; 9155 return state; 9156 } 9157 9158 int tpacpi_led_set(int whichled, bool on) 9159 { 9160 struct tp_led_table *t; 9161 9162 if (whichled < 0 || whichled >= TPACPI_LED_MAX) 9163 return -EINVAL; 9164 9165 t = &led_tables[whichled]; 9166 if (t->state < 0 || t->state == on) 9167 return t->state; 9168 return mute_led_on_off(t, on); 9169 } 9170 EXPORT_SYMBOL_GPL(tpacpi_led_set); 9171 9172 static int mute_led_init(struct ibm_init_struct *iibm) 9173 { 9174 acpi_handle temp; 9175 int i; 9176 9177 for (i = 0; i < TPACPI_LED_MAX; i++) { 9178 struct tp_led_table *t = &led_tables[i]; 9179 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) 9180 mute_led_on_off(t, false); 9181 else 9182 t->state = -ENODEV; 9183 } 9184 return 0; 9185 } 9186 9187 static void mute_led_exit(void) 9188 { 9189 int i; 9190 9191 for (i = 0; i < TPACPI_LED_MAX; i++) 9192 tpacpi_led_set(i, false); 9193 } 9194 9195 static void mute_led_resume(void) 9196 { 9197 int i; 9198 9199 for (i = 0; i < TPACPI_LED_MAX; i++) { 9200 struct tp_led_table *t = &led_tables[i]; 9201 if (t->state >= 0) 9202 mute_led_on_off(t, t->state); 9203 } 9204 } 9205 9206 static struct ibm_struct mute_led_driver_data = { 9207 .name = "mute_led", 9208 .exit = mute_led_exit, 9209 .resume = mute_led_resume, 9210 }; 9211 9212 /**************************************************************************** 9213 **************************************************************************** 9214 * 9215 * Infrastructure 9216 * 9217 **************************************************************************** 9218 ****************************************************************************/ 9219 9220 /* 9221 * HKEY event callout for other subdrivers go here 9222 * (yes, it is ugly, but it is quick, safe, and gets the job done 9223 */ 9224 static void tpacpi_driver_event(const unsigned int hkey_event) 9225 { 9226 if (ibm_backlight_device) { 9227 switch (hkey_event) { 9228 case TP_HKEY_EV_BRGHT_UP: 9229 case TP_HKEY_EV_BRGHT_DOWN: 9230 tpacpi_brightness_notify_change(); 9231 } 9232 } 9233 if (alsa_card) { 9234 switch (hkey_event) { 9235 case TP_HKEY_EV_VOL_UP: 9236 case TP_HKEY_EV_VOL_DOWN: 9237 case TP_HKEY_EV_VOL_MUTE: 9238 volume_alsa_notify_change(); 9239 } 9240 } 9241 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9242 enum led_brightness brightness; 9243 9244 mutex_lock(&kbdlight_mutex); 9245 9246 /* 9247 * Check the brightness actually changed, setting the brightness 9248 * through kbdlight_set_level() also triggers this event. 9249 */ 9250 brightness = kbdlight_sysfs_get(NULL); 9251 if (kbdlight_brightness != brightness) { 9252 kbdlight_brightness = brightness; 9253 led_classdev_notify_brightness_hw_changed( 9254 &tpacpi_led_kbdlight.led_classdev, brightness); 9255 } 9256 9257 mutex_unlock(&kbdlight_mutex); 9258 } 9259 } 9260 9261 static void hotkey_driver_event(const unsigned int scancode) 9262 { 9263 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 9264 } 9265 9266 /* --------------------------------------------------------------------- */ 9267 9268 /* /proc support */ 9269 static struct proc_dir_entry *proc_dir; 9270 9271 /* 9272 * Module and infrastructure proble, init and exit handling 9273 */ 9274 9275 static bool force_load; 9276 9277 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 9278 static const char * __init str_supported(int is_supported) 9279 { 9280 static char text_unsupported[] __initdata = "not supported"; 9281 9282 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 9283 } 9284 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 9285 9286 static void ibm_exit(struct ibm_struct *ibm) 9287 { 9288 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 9289 9290 list_del_init(&ibm->all_drivers); 9291 9292 if (ibm->flags.acpi_notify_installed) { 9293 dbg_printk(TPACPI_DBG_EXIT, 9294 "%s: acpi_remove_notify_handler\n", ibm->name); 9295 BUG_ON(!ibm->acpi); 9296 acpi_remove_notify_handler(*ibm->acpi->handle, 9297 ibm->acpi->type, 9298 dispatch_acpi_notify); 9299 ibm->flags.acpi_notify_installed = 0; 9300 } 9301 9302 if (ibm->flags.proc_created) { 9303 dbg_printk(TPACPI_DBG_EXIT, 9304 "%s: remove_proc_entry\n", ibm->name); 9305 remove_proc_entry(ibm->name, proc_dir); 9306 ibm->flags.proc_created = 0; 9307 } 9308 9309 if (ibm->flags.acpi_driver_registered) { 9310 dbg_printk(TPACPI_DBG_EXIT, 9311 "%s: acpi_bus_unregister_driver\n", ibm->name); 9312 BUG_ON(!ibm->acpi); 9313 acpi_bus_unregister_driver(ibm->acpi->driver); 9314 kfree(ibm->acpi->driver); 9315 ibm->acpi->driver = NULL; 9316 ibm->flags.acpi_driver_registered = 0; 9317 } 9318 9319 if (ibm->flags.init_called && ibm->exit) { 9320 ibm->exit(); 9321 ibm->flags.init_called = 0; 9322 } 9323 9324 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 9325 } 9326 9327 static int __init ibm_init(struct ibm_init_struct *iibm) 9328 { 9329 int ret; 9330 struct ibm_struct *ibm = iibm->data; 9331 struct proc_dir_entry *entry; 9332 9333 BUG_ON(ibm == NULL); 9334 9335 INIT_LIST_HEAD(&ibm->all_drivers); 9336 9337 if (ibm->flags.experimental && !experimental) 9338 return 0; 9339 9340 dbg_printk(TPACPI_DBG_INIT, 9341 "probing for %s\n", ibm->name); 9342 9343 if (iibm->init) { 9344 ret = iibm->init(iibm); 9345 if (ret > 0) 9346 return 0; /* probe failed */ 9347 if (ret) 9348 return ret; 9349 9350 ibm->flags.init_called = 1; 9351 } 9352 9353 if (ibm->acpi) { 9354 if (ibm->acpi->hid) { 9355 ret = register_tpacpi_subdriver(ibm); 9356 if (ret) 9357 goto err_out; 9358 } 9359 9360 if (ibm->acpi->notify) { 9361 ret = setup_acpi_notify(ibm); 9362 if (ret == -ENODEV) { 9363 pr_notice("disabling subdriver %s\n", 9364 ibm->name); 9365 ret = 0; 9366 goto err_out; 9367 } 9368 if (ret < 0) 9369 goto err_out; 9370 } 9371 } 9372 9373 dbg_printk(TPACPI_DBG_INIT, 9374 "%s installed\n", ibm->name); 9375 9376 if (ibm->read) { 9377 umode_t mode = iibm->base_procfs_mode; 9378 9379 if (!mode) 9380 mode = S_IRUGO; 9381 if (ibm->write) 9382 mode |= S_IWUSR; 9383 entry = proc_create_data(ibm->name, mode, proc_dir, 9384 &dispatch_proc_fops, ibm); 9385 if (!entry) { 9386 pr_err("unable to create proc entry %s\n", ibm->name); 9387 ret = -ENODEV; 9388 goto err_out; 9389 } 9390 ibm->flags.proc_created = 1; 9391 } 9392 9393 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 9394 9395 return 0; 9396 9397 err_out: 9398 dbg_printk(TPACPI_DBG_INIT, 9399 "%s: at error exit path with result %d\n", 9400 ibm->name, ret); 9401 9402 ibm_exit(ibm); 9403 return (ret < 0) ? ret : 0; 9404 } 9405 9406 /* Probing */ 9407 9408 static bool __pure __init tpacpi_is_fw_digit(const char c) 9409 { 9410 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); 9411 } 9412 9413 static bool __pure __init tpacpi_is_valid_fw_id(const char * const s, 9414 const char t) 9415 { 9416 /* 9417 * Most models: xxyTkkWW (#.##c) 9418 * Ancient 570/600 and -SL lacks (#.##c) 9419 */ 9420 if (s && strlen(s) >= 8 && 9421 tpacpi_is_fw_digit(s[0]) && 9422 tpacpi_is_fw_digit(s[1]) && 9423 s[2] == t && 9424 (s[3] == 'T' || s[3] == 'N') && 9425 tpacpi_is_fw_digit(s[4]) && 9426 tpacpi_is_fw_digit(s[5])) 9427 return true; 9428 9429 /* New models: xxxyTkkW (#.##c); T550 and some others */ 9430 return s && strlen(s) >= 8 && 9431 tpacpi_is_fw_digit(s[0]) && 9432 tpacpi_is_fw_digit(s[1]) && 9433 tpacpi_is_fw_digit(s[2]) && 9434 s[3] == t && 9435 (s[4] == 'T' || s[4] == 'N') && 9436 tpacpi_is_fw_digit(s[5]) && 9437 tpacpi_is_fw_digit(s[6]); 9438 } 9439 9440 /* returns 0 - probe ok, or < 0 - probe error. 9441 * Probe ok doesn't mean thinkpad found. 9442 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 9443 static int __must_check __init get_thinkpad_model_data( 9444 struct thinkpad_id_data *tp) 9445 { 9446 const struct dmi_device *dev = NULL; 9447 char ec_fw_string[18]; 9448 char const *s; 9449 9450 if (!tp) 9451 return -EINVAL; 9452 9453 memset(tp, 0, sizeof(*tp)); 9454 9455 if (dmi_name_in_vendors("IBM")) 9456 tp->vendor = PCI_VENDOR_ID_IBM; 9457 else if (dmi_name_in_vendors("LENOVO")) 9458 tp->vendor = PCI_VENDOR_ID_LENOVO; 9459 else 9460 return 0; 9461 9462 s = dmi_get_system_info(DMI_BIOS_VERSION); 9463 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 9464 if (s && !tp->bios_version_str) 9465 return -ENOMEM; 9466 9467 /* Really ancient ThinkPad 240X will fail this, which is fine */ 9468 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') || 9469 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C'))) 9470 return 0; 9471 9472 tp->bios_model = tp->bios_version_str[0] 9473 | (tp->bios_version_str[1] << 8); 9474 tp->bios_release = (tp->bios_version_str[4] << 8) 9475 | tp->bios_version_str[5]; 9476 9477 /* 9478 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 9479 * X32 or newer, all Z series; Some models must have an 9480 * up-to-date BIOS or they will not be detected. 9481 * 9482 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9483 */ 9484 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 9485 if (sscanf(dev->name, 9486 "IBM ThinkPad Embedded Controller -[%17c", 9487 ec_fw_string) == 1) { 9488 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 9489 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 9490 9491 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 9492 if (!tp->ec_version_str) 9493 return -ENOMEM; 9494 9495 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { 9496 tp->ec_model = ec_fw_string[0] 9497 | (ec_fw_string[1] << 8); 9498 tp->ec_release = (ec_fw_string[4] << 8) 9499 | ec_fw_string[5]; 9500 } else { 9501 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 9502 ec_fw_string); 9503 pr_notice("please report this to %s\n", 9504 TPACPI_MAIL); 9505 } 9506 break; 9507 } 9508 } 9509 9510 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 9511 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 9512 tp->model_str = kstrdup(s, GFP_KERNEL); 9513 if (!tp->model_str) 9514 return -ENOMEM; 9515 } else { 9516 s = dmi_get_system_info(DMI_BIOS_VENDOR); 9517 if (s && !(strncasecmp(s, "Lenovo", 6))) { 9518 tp->model_str = kstrdup(s, GFP_KERNEL); 9519 if (!tp->model_str) 9520 return -ENOMEM; 9521 } 9522 } 9523 9524 s = dmi_get_system_info(DMI_PRODUCT_NAME); 9525 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 9526 if (s && !tp->nummodel_str) 9527 return -ENOMEM; 9528 9529 return 0; 9530 } 9531 9532 static int __init probe_for_thinkpad(void) 9533 { 9534 int is_thinkpad; 9535 9536 if (acpi_disabled) 9537 return -ENODEV; 9538 9539 /* It would be dangerous to run the driver in this case */ 9540 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 9541 return -ENODEV; 9542 9543 /* 9544 * Non-ancient models have better DMI tagging, but very old models 9545 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 9546 */ 9547 is_thinkpad = (thinkpad_id.model_str != NULL) || 9548 (thinkpad_id.ec_model != 0) || 9549 tpacpi_is_fw_known(); 9550 9551 /* The EC handler is required */ 9552 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 9553 if (!ec_handle) { 9554 if (is_thinkpad) 9555 pr_err("Not yet supported ThinkPad detected!\n"); 9556 return -ENODEV; 9557 } 9558 9559 if (!is_thinkpad && !force_load) 9560 return -ENODEV; 9561 9562 return 0; 9563 } 9564 9565 static void __init thinkpad_acpi_init_banner(void) 9566 { 9567 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 9568 pr_info("%s\n", TPACPI_URL); 9569 9570 pr_info("ThinkPad BIOS %s, EC %s\n", 9571 (thinkpad_id.bios_version_str) ? 9572 thinkpad_id.bios_version_str : "unknown", 9573 (thinkpad_id.ec_version_str) ? 9574 thinkpad_id.ec_version_str : "unknown"); 9575 9576 BUG_ON(!thinkpad_id.vendor); 9577 9578 if (thinkpad_id.model_str) 9579 pr_info("%s %s, model %s\n", 9580 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 9581 "IBM" : ((thinkpad_id.vendor == 9582 PCI_VENDOR_ID_LENOVO) ? 9583 "Lenovo" : "Unknown vendor"), 9584 thinkpad_id.model_str, 9585 (thinkpad_id.nummodel_str) ? 9586 thinkpad_id.nummodel_str : "unknown"); 9587 } 9588 9589 /* Module init, exit, parameters */ 9590 9591 static struct ibm_init_struct ibms_init[] __initdata = { 9592 { 9593 .data = &thinkpad_acpi_driver_data, 9594 }, 9595 { 9596 .init = hotkey_init, 9597 .data = &hotkey_driver_data, 9598 }, 9599 { 9600 .init = bluetooth_init, 9601 .data = &bluetooth_driver_data, 9602 }, 9603 { 9604 .init = wan_init, 9605 .data = &wan_driver_data, 9606 }, 9607 { 9608 .init = uwb_init, 9609 .data = &uwb_driver_data, 9610 }, 9611 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 9612 { 9613 .init = video_init, 9614 .base_procfs_mode = S_IRUSR, 9615 .data = &video_driver_data, 9616 }, 9617 #endif 9618 { 9619 .init = kbdlight_init, 9620 .data = &kbdlight_driver_data, 9621 }, 9622 { 9623 .init = light_init, 9624 .data = &light_driver_data, 9625 }, 9626 { 9627 .init = cmos_init, 9628 .data = &cmos_driver_data, 9629 }, 9630 { 9631 .init = led_init, 9632 .data = &led_driver_data, 9633 }, 9634 { 9635 .init = beep_init, 9636 .data = &beep_driver_data, 9637 }, 9638 { 9639 .init = thermal_init, 9640 .data = &thermal_driver_data, 9641 }, 9642 { 9643 .init = brightness_init, 9644 .data = &brightness_driver_data, 9645 }, 9646 { 9647 .init = volume_init, 9648 .data = &volume_driver_data, 9649 }, 9650 { 9651 .init = fan_init, 9652 .data = &fan_driver_data, 9653 }, 9654 { 9655 .init = mute_led_init, 9656 .data = &mute_led_driver_data, 9657 }, 9658 }; 9659 9660 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 9661 { 9662 unsigned int i; 9663 struct ibm_struct *ibm; 9664 9665 if (!kp || !kp->name || !val) 9666 return -EINVAL; 9667 9668 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9669 ibm = ibms_init[i].data; 9670 WARN_ON(ibm == NULL); 9671 9672 if (!ibm || !ibm->name) 9673 continue; 9674 9675 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 9676 if (strlen(val) > sizeof(ibms_init[i].param) - 2) 9677 return -ENOSPC; 9678 strcpy(ibms_init[i].param, val); 9679 strcat(ibms_init[i].param, ","); 9680 return 0; 9681 } 9682 } 9683 9684 return -EINVAL; 9685 } 9686 9687 module_param(experimental, int, 0444); 9688 MODULE_PARM_DESC(experimental, 9689 "Enables experimental features when non-zero"); 9690 9691 module_param_named(debug, dbg_level, uint, 0); 9692 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 9693 9694 module_param(force_load, bool, 0444); 9695 MODULE_PARM_DESC(force_load, 9696 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 9697 9698 module_param_named(fan_control, fan_control_allowed, bool, 0444); 9699 MODULE_PARM_DESC(fan_control, 9700 "Enables setting fan parameters features when true"); 9701 9702 module_param_named(brightness_mode, brightness_mode, uint, 0444); 9703 MODULE_PARM_DESC(brightness_mode, 9704 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 9705 9706 module_param(brightness_enable, uint, 0444); 9707 MODULE_PARM_DESC(brightness_enable, 9708 "Enables backlight control when 1, disables when 0"); 9709 9710 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 9711 module_param_named(volume_mode, volume_mode, uint, 0444); 9712 MODULE_PARM_DESC(volume_mode, 9713 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 9714 9715 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 9716 MODULE_PARM_DESC(volume_capabilities, 9717 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only"); 9718 9719 module_param_named(volume_control, volume_control_allowed, bool, 0444); 9720 MODULE_PARM_DESC(volume_control, 9721 "Enables software override for the console audio control when true"); 9722 9723 module_param_named(software_mute, software_mute_requested, bool, 0444); 9724 MODULE_PARM_DESC(software_mute, 9725 "Request full software mute control"); 9726 9727 /* ALSA module API parameters */ 9728 module_param_named(index, alsa_index, int, 0444); 9729 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 9730 module_param_named(id, alsa_id, charp, 0444); 9731 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 9732 module_param_named(enable, alsa_enable, bool, 0444); 9733 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 9734 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 9735 9736 /* The module parameter can't be read back, that's why 0 is used here */ 9737 #define TPACPI_PARAM(feature) \ 9738 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 9739 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 9740 9741 TPACPI_PARAM(hotkey); 9742 TPACPI_PARAM(bluetooth); 9743 TPACPI_PARAM(video); 9744 TPACPI_PARAM(light); 9745 TPACPI_PARAM(cmos); 9746 TPACPI_PARAM(led); 9747 TPACPI_PARAM(beep); 9748 TPACPI_PARAM(brightness); 9749 TPACPI_PARAM(volume); 9750 TPACPI_PARAM(fan); 9751 9752 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 9753 module_param(dbg_wlswemul, uint, 0444); 9754 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 9755 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 9756 MODULE_PARM_DESC(wlsw_state, 9757 "Initial state of the emulated WLSW switch"); 9758 9759 module_param(dbg_bluetoothemul, uint, 0444); 9760 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 9761 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 9762 MODULE_PARM_DESC(bluetooth_state, 9763 "Initial state of the emulated bluetooth switch"); 9764 9765 module_param(dbg_wwanemul, uint, 0444); 9766 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 9767 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 9768 MODULE_PARM_DESC(wwan_state, 9769 "Initial state of the emulated WWAN switch"); 9770 9771 module_param(dbg_uwbemul, uint, 0444); 9772 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 9773 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 9774 MODULE_PARM_DESC(uwb_state, 9775 "Initial state of the emulated UWB switch"); 9776 #endif 9777 9778 static void thinkpad_acpi_module_exit(void) 9779 { 9780 struct ibm_struct *ibm, *itmp; 9781 9782 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 9783 9784 list_for_each_entry_safe_reverse(ibm, itmp, 9785 &tpacpi_all_drivers, 9786 all_drivers) { 9787 ibm_exit(ibm); 9788 } 9789 9790 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 9791 9792 if (tpacpi_inputdev) { 9793 if (tp_features.input_device_registered) 9794 input_unregister_device(tpacpi_inputdev); 9795 else 9796 input_free_device(tpacpi_inputdev); 9797 kfree(hotkey_keycode_map); 9798 } 9799 9800 if (tpacpi_hwmon) 9801 hwmon_device_unregister(tpacpi_hwmon); 9802 9803 if (tpacpi_sensors_pdev) 9804 platform_device_unregister(tpacpi_sensors_pdev); 9805 if (tpacpi_pdev) 9806 platform_device_unregister(tpacpi_pdev); 9807 9808 if (tp_features.sensors_pdrv_attrs_registered) 9809 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 9810 if (tp_features.platform_drv_attrs_registered) 9811 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 9812 9813 if (tp_features.sensors_pdrv_registered) 9814 platform_driver_unregister(&tpacpi_hwmon_pdriver); 9815 9816 if (tp_features.platform_drv_registered) 9817 platform_driver_unregister(&tpacpi_pdriver); 9818 9819 if (proc_dir) 9820 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 9821 9822 if (tpacpi_wq) 9823 destroy_workqueue(tpacpi_wq); 9824 9825 kfree(thinkpad_id.bios_version_str); 9826 kfree(thinkpad_id.ec_version_str); 9827 kfree(thinkpad_id.model_str); 9828 kfree(thinkpad_id.nummodel_str); 9829 } 9830 9831 9832 static int __init thinkpad_acpi_module_init(void) 9833 { 9834 int ret, i; 9835 9836 tpacpi_lifecycle = TPACPI_LIFE_INIT; 9837 9838 /* Driver-level probe */ 9839 9840 ret = get_thinkpad_model_data(&thinkpad_id); 9841 if (ret) { 9842 pr_err("unable to get DMI data: %d\n", ret); 9843 thinkpad_acpi_module_exit(); 9844 return ret; 9845 } 9846 ret = probe_for_thinkpad(); 9847 if (ret) { 9848 thinkpad_acpi_module_exit(); 9849 return ret; 9850 } 9851 9852 /* Driver initialization */ 9853 9854 thinkpad_acpi_init_banner(); 9855 tpacpi_check_outdated_fw(); 9856 9857 TPACPI_ACPIHANDLE_INIT(ecrd); 9858 TPACPI_ACPIHANDLE_INIT(ecwr); 9859 9860 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 9861 if (!tpacpi_wq) { 9862 thinkpad_acpi_module_exit(); 9863 return -ENOMEM; 9864 } 9865 9866 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 9867 if (!proc_dir) { 9868 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 9869 thinkpad_acpi_module_exit(); 9870 return -ENODEV; 9871 } 9872 9873 ret = platform_driver_register(&tpacpi_pdriver); 9874 if (ret) { 9875 pr_err("unable to register main platform driver\n"); 9876 thinkpad_acpi_module_exit(); 9877 return ret; 9878 } 9879 tp_features.platform_drv_registered = 1; 9880 9881 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 9882 if (ret) { 9883 pr_err("unable to register hwmon platform driver\n"); 9884 thinkpad_acpi_module_exit(); 9885 return ret; 9886 } 9887 tp_features.sensors_pdrv_registered = 1; 9888 9889 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 9890 if (!ret) { 9891 tp_features.platform_drv_attrs_registered = 1; 9892 ret = tpacpi_create_driver_attributes( 9893 &tpacpi_hwmon_pdriver.driver); 9894 } 9895 if (ret) { 9896 pr_err("unable to create sysfs driver attributes\n"); 9897 thinkpad_acpi_module_exit(); 9898 return ret; 9899 } 9900 tp_features.sensors_pdrv_attrs_registered = 1; 9901 9902 9903 /* Device initialization */ 9904 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 9905 NULL, 0); 9906 if (IS_ERR(tpacpi_pdev)) { 9907 ret = PTR_ERR(tpacpi_pdev); 9908 tpacpi_pdev = NULL; 9909 pr_err("unable to register platform device\n"); 9910 thinkpad_acpi_module_exit(); 9911 return ret; 9912 } 9913 tpacpi_sensors_pdev = platform_device_register_simple( 9914 TPACPI_HWMON_DRVR_NAME, 9915 -1, NULL, 0); 9916 if (IS_ERR(tpacpi_sensors_pdev)) { 9917 ret = PTR_ERR(tpacpi_sensors_pdev); 9918 tpacpi_sensors_pdev = NULL; 9919 pr_err("unable to register hwmon platform device\n"); 9920 thinkpad_acpi_module_exit(); 9921 return ret; 9922 } 9923 tp_features.sensors_pdev_attrs_registered = 1; 9924 tpacpi_hwmon = hwmon_device_register_with_groups( 9925 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 9926 9927 if (IS_ERR(tpacpi_hwmon)) { 9928 ret = PTR_ERR(tpacpi_hwmon); 9929 tpacpi_hwmon = NULL; 9930 pr_err("unable to register hwmon device\n"); 9931 thinkpad_acpi_module_exit(); 9932 return ret; 9933 } 9934 mutex_init(&tpacpi_inputdev_send_mutex); 9935 tpacpi_inputdev = input_allocate_device(); 9936 if (!tpacpi_inputdev) { 9937 thinkpad_acpi_module_exit(); 9938 return -ENOMEM; 9939 } else { 9940 /* Prepare input device, but don't register */ 9941 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 9942 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 9943 tpacpi_inputdev->id.bustype = BUS_HOST; 9944 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 9945 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 9946 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 9947 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 9948 } 9949 9950 /* Init subdriver dependencies */ 9951 tpacpi_detect_brightness_capabilities(); 9952 9953 /* Init subdrivers */ 9954 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9955 ret = ibm_init(&ibms_init[i]); 9956 if (ret >= 0 && *ibms_init[i].param) 9957 ret = ibms_init[i].data->write(ibms_init[i].param); 9958 if (ret < 0) { 9959 thinkpad_acpi_module_exit(); 9960 return ret; 9961 } 9962 } 9963 9964 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 9965 9966 ret = input_register_device(tpacpi_inputdev); 9967 if (ret < 0) { 9968 pr_err("unable to register input device\n"); 9969 thinkpad_acpi_module_exit(); 9970 return ret; 9971 } else { 9972 tp_features.input_device_registered = 1; 9973 } 9974 9975 return 0; 9976 } 9977 9978 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 9979 9980 /* 9981 * This will autoload the driver in almost every ThinkPad 9982 * in widespread use. 9983 * 9984 * Only _VERY_ old models, like the 240, 240x and 570 lack 9985 * the HKEY event interface. 9986 */ 9987 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 9988 9989 /* 9990 * DMI matching for module autoloading 9991 * 9992 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9993 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 9994 * 9995 * Only models listed in thinkwiki will be supported, so add yours 9996 * if it is not there yet. 9997 */ 9998 #define IBM_BIOS_MODULE_ALIAS(__type) \ 9999 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 10000 10001 /* Ancient thinkpad BIOSes have to be identified by 10002 * BIOS type or model number, and there are far less 10003 * BIOS types than model numbers... */ 10004 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 10005 10006 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 10007 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 10008 MODULE_DESCRIPTION(TPACPI_DESC); 10009 MODULE_VERSION(TPACPI_VERSION); 10010 MODULE_LICENSE("GPL"); 10011 10012 module_init(thinkpad_acpi_module_init); 10013 module_exit(thinkpad_acpi_module_exit); 10014