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 TPACPI_VERSION "0.23" 25 #define TPACPI_SYSFS_VERSION 0x020400 26 27 /* 28 * Changelog: 29 * 2007-10-20 changelog trimmed down 30 * 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 32 * drivers/misc. 33 * 34 * 2006-11-22 0.13 new maintainer 35 * changelog now lives in git commit history, and will 36 * not be updated further in-file. 37 * 38 * 2005-03-17 0.11 support for 600e, 770x 39 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 40 * 41 * 2005-01-16 0.9 use MODULE_VERSION 42 * thanks to Henrik Brix Andersen <brix@gentoo.org> 43 * fix parameter passing on module loading 44 * thanks to Rusty Russell <rusty@rustcorp.com.au> 45 * thanks to Jim Radford <radford@blackbean.org> 46 * 2004-11-08 0.8 fix init error case, don't return from a macro 47 * thanks to Chris Wright <chrisw@osdl.org> 48 */ 49 50 #include <linux/kernel.h> 51 #include <linux/module.h> 52 #include <linux/init.h> 53 #include <linux/types.h> 54 #include <linux/string.h> 55 #include <linux/list.h> 56 #include <linux/mutex.h> 57 #include <linux/sched.h> 58 #include <linux/kthread.h> 59 #include <linux/freezer.h> 60 #include <linux/delay.h> 61 62 #include <linux/nvram.h> 63 #include <linux/proc_fs.h> 64 #include <linux/sysfs.h> 65 #include <linux/backlight.h> 66 #include <linux/fb.h> 67 #include <linux/platform_device.h> 68 #include <linux/hwmon.h> 69 #include <linux/hwmon-sysfs.h> 70 #include <linux/input.h> 71 #include <linux/leds.h> 72 #include <linux/rfkill.h> 73 #include <asm/uaccess.h> 74 75 #include <linux/dmi.h> 76 #include <linux/jiffies.h> 77 #include <linux/workqueue.h> 78 79 #include <acpi/acpi_drivers.h> 80 81 #include <linux/pci_ids.h> 82 83 84 /* ThinkPad CMOS commands */ 85 #define TP_CMOS_VOLUME_DOWN 0 86 #define TP_CMOS_VOLUME_UP 1 87 #define TP_CMOS_VOLUME_MUTE 2 88 #define TP_CMOS_BRIGHTNESS_UP 4 89 #define TP_CMOS_BRIGHTNESS_DOWN 5 90 #define TP_CMOS_THINKLIGHT_ON 12 91 #define TP_CMOS_THINKLIGHT_OFF 13 92 93 /* NVRAM Addresses */ 94 enum tp_nvram_addr { 95 TP_NVRAM_ADDR_HK2 = 0x57, 96 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 97 TP_NVRAM_ADDR_VIDEO = 0x59, 98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 99 TP_NVRAM_ADDR_MIXER = 0x60, 100 }; 101 102 /* NVRAM bit masks */ 103 enum { 104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 105 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 108 TP_NVRAM_MASK_THINKLIGHT = 0x10, 109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 113 TP_NVRAM_MASK_MUTE = 0x40, 114 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 116 TP_NVRAM_POS_LEVEL_VOLUME = 0, 117 }; 118 119 /* ACPI HIDs */ 120 #define TPACPI_ACPI_HKEY_HID "IBM0068" 121 122 /* Input IDs */ 123 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 124 #define TPACPI_HKEY_INPUT_VERSION 0x4101 125 126 /* ACPI \WGSV commands */ 127 enum { 128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 132 }; 133 134 /* TP_ACPI_WGSV_GET_STATE bits */ 135 enum { 136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 146 }; 147 148 /**************************************************************************** 149 * Main driver 150 */ 151 152 #define TPACPI_NAME "thinkpad" 153 #define TPACPI_DESC "ThinkPad ACPI Extras" 154 #define TPACPI_FILE TPACPI_NAME "_acpi" 155 #define TPACPI_URL "http://ibm-acpi.sf.net/" 156 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 157 158 #define TPACPI_PROC_DIR "ibm" 159 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 160 #define TPACPI_DRVR_NAME TPACPI_FILE 161 #define TPACPI_DRVR_SHORTNAME "tpacpi" 162 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 163 164 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 165 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 166 167 #define TPACPI_MAX_ACPI_ARGS 3 168 169 /* printk headers */ 170 #define TPACPI_LOG TPACPI_FILE ": " 171 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG 172 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG 173 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG 174 #define TPACPI_ERR KERN_ERR TPACPI_LOG 175 #define TPACPI_WARN KERN_WARNING TPACPI_LOG 176 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG 177 #define TPACPI_INFO KERN_INFO TPACPI_LOG 178 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG 179 180 /* Debugging printk groups */ 181 #define TPACPI_DBG_ALL 0xffff 182 #define TPACPI_DBG_DISCLOSETASK 0x8000 183 #define TPACPI_DBG_INIT 0x0001 184 #define TPACPI_DBG_EXIT 0x0002 185 #define TPACPI_DBG_RFKILL 0x0004 186 #define TPACPI_DBG_HKEY 0x0008 187 #define TPACPI_DBG_FAN 0x0010 188 #define TPACPI_DBG_BRGHT 0x0020 189 190 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 191 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 192 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 193 194 195 /**************************************************************************** 196 * Driver-wide structs and misc. variables 197 */ 198 199 struct ibm_struct; 200 201 struct tp_acpi_drv_struct { 202 const struct acpi_device_id *hid; 203 struct acpi_driver *driver; 204 205 void (*notify) (struct ibm_struct *, u32); 206 acpi_handle *handle; 207 u32 type; 208 struct acpi_device *device; 209 }; 210 211 struct ibm_struct { 212 char *name; 213 214 int (*read) (char *); 215 int (*write) (char *); 216 void (*exit) (void); 217 void (*resume) (void); 218 void (*suspend) (pm_message_t state); 219 void (*shutdown) (void); 220 221 struct list_head all_drivers; 222 223 struct tp_acpi_drv_struct *acpi; 224 225 struct { 226 u8 acpi_driver_registered:1; 227 u8 acpi_notify_installed:1; 228 u8 proc_created:1; 229 u8 init_called:1; 230 u8 experimental:1; 231 } flags; 232 }; 233 234 struct ibm_init_struct { 235 char param[32]; 236 237 int (*init) (struct ibm_init_struct *); 238 struct ibm_struct *data; 239 }; 240 241 static struct { 242 u32 bluetooth:1; 243 u32 hotkey:1; 244 u32 hotkey_mask:1; 245 u32 hotkey_wlsw:1; 246 u32 hotkey_tablet:1; 247 u32 light:1; 248 u32 light_status:1; 249 u32 bright_16levels:1; 250 u32 bright_acpimode:1; 251 u32 wan:1; 252 u32 uwb:1; 253 u32 fan_ctrl_status_undef:1; 254 u32 second_fan:1; 255 u32 beep_needs_two_args:1; 256 u32 input_device_registered:1; 257 u32 platform_drv_registered:1; 258 u32 platform_drv_attrs_registered:1; 259 u32 sensors_pdrv_registered:1; 260 u32 sensors_pdrv_attrs_registered:1; 261 u32 sensors_pdev_attrs_registered:1; 262 u32 hotkey_poll_active:1; 263 } tp_features; 264 265 static struct { 266 u16 hotkey_mask_ff:1; 267 } tp_warned; 268 269 struct thinkpad_id_data { 270 unsigned int vendor; /* ThinkPad vendor: 271 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 272 273 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 274 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 275 276 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ 277 u16 ec_model; 278 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ 279 u16 ec_release; 280 281 char *model_str; /* ThinkPad T43 */ 282 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 283 }; 284 static struct thinkpad_id_data thinkpad_id; 285 286 static enum { 287 TPACPI_LIFE_INIT = 0, 288 TPACPI_LIFE_RUNNING, 289 TPACPI_LIFE_EXITING, 290 } tpacpi_lifecycle; 291 292 static int experimental; 293 static u32 dbg_level; 294 295 static struct workqueue_struct *tpacpi_wq; 296 297 enum led_status_t { 298 TPACPI_LED_OFF = 0, 299 TPACPI_LED_ON, 300 TPACPI_LED_BLINK, 301 }; 302 303 /* Special LED class that can defer work */ 304 struct tpacpi_led_classdev { 305 struct led_classdev led_classdev; 306 struct work_struct work; 307 enum led_status_t new_state; 308 unsigned int led; 309 }; 310 311 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 312 static int dbg_wlswemul; 313 static int tpacpi_wlsw_emulstate; 314 static int dbg_bluetoothemul; 315 static int tpacpi_bluetooth_emulstate; 316 static int dbg_wwanemul; 317 static int tpacpi_wwan_emulstate; 318 static int dbg_uwbemul; 319 static int tpacpi_uwb_emulstate; 320 #endif 321 322 323 /************************************************************************* 324 * Debugging helpers 325 */ 326 327 #define dbg_printk(a_dbg_level, format, arg...) \ 328 do { if (dbg_level & (a_dbg_level)) \ 329 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ 330 } while (0) 331 332 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 333 #define vdbg_printk dbg_printk 334 static const char *str_supported(int is_supported); 335 #else 336 #define vdbg_printk(a_dbg_level, format, arg...) \ 337 do { } while (0) 338 #endif 339 340 static void tpacpi_log_usertask(const char * const what) 341 { 342 printk(TPACPI_DEBUG "%s: access by process with PID %d\n", 343 what, task_tgid_vnr(current)); 344 } 345 346 #define tpacpi_disclose_usertask(what, format, arg...) \ 347 do { \ 348 if (unlikely( \ 349 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 350 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 351 printk(TPACPI_DEBUG "%s: PID %d: " format, \ 352 what, task_tgid_vnr(current), ## arg); \ 353 } \ 354 } while (0) 355 356 /* 357 * Quirk handling helpers 358 * 359 * ThinkPad IDs and versions seen in the field so far 360 * are two-characters from the set [0-9A-Z], i.e. base 36. 361 * 362 * We use values well outside that range as specials. 363 */ 364 365 #define TPACPI_MATCH_ANY 0xffffU 366 #define TPACPI_MATCH_UNKNOWN 0U 367 368 /* TPID('1', 'Y') == 0x5931 */ 369 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) 370 371 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 372 { .vendor = PCI_VENDOR_ID_IBM, \ 373 .bios = TPID(__id1, __id2), \ 374 .ec = TPACPI_MATCH_ANY, \ 375 .quirks = (__quirk) } 376 377 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 378 { .vendor = PCI_VENDOR_ID_LENOVO, \ 379 .bios = TPID(__id1, __id2), \ 380 .ec = TPACPI_MATCH_ANY, \ 381 .quirks = (__quirk) } 382 383 struct tpacpi_quirk { 384 unsigned int vendor; 385 u16 bios; 386 u16 ec; 387 unsigned long quirks; 388 }; 389 390 /** 391 * tpacpi_check_quirks() - search BIOS/EC version on a list 392 * @qlist: array of &struct tpacpi_quirk 393 * @qlist_size: number of elements in @qlist 394 * 395 * Iterates over a quirks list until one is found that matches the 396 * ThinkPad's vendor, BIOS and EC model. 397 * 398 * Returns 0 if nothing matches, otherwise returns the quirks field of 399 * the matching &struct tpacpi_quirk entry. 400 * 401 * The match criteria is: vendor, ec and bios much match. 402 */ 403 static unsigned long __init tpacpi_check_quirks( 404 const struct tpacpi_quirk *qlist, 405 unsigned int qlist_size) 406 { 407 while (qlist_size) { 408 if ((qlist->vendor == thinkpad_id.vendor || 409 qlist->vendor == TPACPI_MATCH_ANY) && 410 (qlist->bios == thinkpad_id.bios_model || 411 qlist->bios == TPACPI_MATCH_ANY) && 412 (qlist->ec == thinkpad_id.ec_model || 413 qlist->ec == TPACPI_MATCH_ANY)) 414 return qlist->quirks; 415 416 qlist_size--; 417 qlist++; 418 } 419 return 0; 420 } 421 422 423 /**************************************************************************** 424 **************************************************************************** 425 * 426 * ACPI Helpers and device model 427 * 428 **************************************************************************** 429 ****************************************************************************/ 430 431 /************************************************************************* 432 * ACPI basic handles 433 */ 434 435 static acpi_handle root_handle; 436 437 #define TPACPI_HANDLE(object, parent, paths...) \ 438 static acpi_handle object##_handle; \ 439 static acpi_handle *object##_parent = &parent##_handle; \ 440 static char *object##_path; \ 441 static char *object##_paths[] = { paths } 442 443 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ 444 "\\_SB.PCI.ISA.EC", /* 570 */ 445 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ 446 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ 447 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ 448 "\\_SB.PCI0.ICH3.EC0", /* R31 */ 449 "\\_SB.PCI0.LPC.EC", /* all others */ 450 ); 451 452 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 453 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 454 455 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 456 /* T4x, X31, X40 */ 457 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 458 "\\CMS", /* R40, R40e */ 459 ); /* all others */ 460 461 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 462 "^HKEY", /* R30, R31 */ 463 "HKEY", /* all others */ 464 ); /* 570 */ 465 466 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ 467 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 468 "\\_SB.PCI0.VID0", /* 770e */ 469 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 470 "\\_SB.PCI0.AGP.VID", /* all others */ 471 ); /* R30, R31 */ 472 473 474 /************************************************************************* 475 * ACPI helpers 476 */ 477 478 static int acpi_evalf(acpi_handle handle, 479 void *res, char *method, char *fmt, ...) 480 { 481 char *fmt0 = fmt; 482 struct acpi_object_list params; 483 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 484 struct acpi_buffer result, *resultp; 485 union acpi_object out_obj; 486 acpi_status status; 487 va_list ap; 488 char res_type; 489 int success; 490 int quiet; 491 492 if (!*fmt) { 493 printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); 494 return 0; 495 } 496 497 if (*fmt == 'q') { 498 quiet = 1; 499 fmt++; 500 } else 501 quiet = 0; 502 503 res_type = *(fmt++); 504 505 params.count = 0; 506 params.pointer = &in_objs[0]; 507 508 va_start(ap, fmt); 509 while (*fmt) { 510 char c = *(fmt++); 511 switch (c) { 512 case 'd': /* int */ 513 in_objs[params.count].integer.value = va_arg(ap, int); 514 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 515 break; 516 /* add more types as needed */ 517 default: 518 printk(TPACPI_ERR "acpi_evalf() called " 519 "with invalid format character '%c'\n", c); 520 return 0; 521 } 522 } 523 va_end(ap); 524 525 if (res_type != 'v') { 526 result.length = sizeof(out_obj); 527 result.pointer = &out_obj; 528 resultp = &result; 529 } else 530 resultp = NULL; 531 532 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 533 534 switch (res_type) { 535 case 'd': /* int */ 536 if (res) 537 *(int *)res = out_obj.integer.value; 538 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; 539 break; 540 case 'v': /* void */ 541 success = status == AE_OK; 542 break; 543 /* add more types as needed */ 544 default: 545 printk(TPACPI_ERR "acpi_evalf() called " 546 "with invalid format character '%c'\n", res_type); 547 return 0; 548 } 549 550 if (!success && !quiet) 551 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", 552 method, fmt0, status); 553 554 return success; 555 } 556 557 static int acpi_ec_read(int i, u8 *p) 558 { 559 int v; 560 561 if (ecrd_handle) { 562 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 563 return 0; 564 *p = v; 565 } else { 566 if (ec_read(i, p) < 0) 567 return 0; 568 } 569 570 return 1; 571 } 572 573 static int acpi_ec_write(int i, u8 v) 574 { 575 if (ecwr_handle) { 576 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 577 return 0; 578 } else { 579 if (ec_write(i, v) < 0) 580 return 0; 581 } 582 583 return 1; 584 } 585 586 static int issue_thinkpad_cmos_command(int cmos_cmd) 587 { 588 if (!cmos_handle) 589 return -ENXIO; 590 591 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 592 return -EIO; 593 594 return 0; 595 } 596 597 /************************************************************************* 598 * ACPI device model 599 */ 600 601 #define TPACPI_ACPIHANDLE_INIT(object) \ 602 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 603 object##_paths, ARRAY_SIZE(object##_paths), &object##_path) 604 605 static void drv_acpi_handle_init(char *name, 606 acpi_handle *handle, acpi_handle parent, 607 char **paths, int num_paths, char **path) 608 { 609 int i; 610 acpi_status status; 611 612 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 613 name); 614 615 for (i = 0; i < num_paths; i++) { 616 status = acpi_get_handle(parent, paths[i], handle); 617 if (ACPI_SUCCESS(status)) { 618 *path = paths[i]; 619 dbg_printk(TPACPI_DBG_INIT, 620 "Found ACPI handle %s for %s\n", 621 *path, name); 622 return; 623 } 624 } 625 626 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 627 name); 628 *handle = NULL; 629 } 630 631 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 632 { 633 struct ibm_struct *ibm = data; 634 635 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 636 return; 637 638 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 639 return; 640 641 ibm->acpi->notify(ibm, event); 642 } 643 644 static int __init setup_acpi_notify(struct ibm_struct *ibm) 645 { 646 acpi_status status; 647 int rc; 648 649 BUG_ON(!ibm->acpi); 650 651 if (!*ibm->acpi->handle) 652 return 0; 653 654 vdbg_printk(TPACPI_DBG_INIT, 655 "setting up ACPI notify for %s\n", ibm->name); 656 657 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 658 if (rc < 0) { 659 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", 660 ibm->name, rc); 661 return -ENODEV; 662 } 663 664 ibm->acpi->device->driver_data = ibm; 665 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 666 TPACPI_ACPI_EVENT_PREFIX, 667 ibm->name); 668 669 status = acpi_install_notify_handler(*ibm->acpi->handle, 670 ibm->acpi->type, dispatch_acpi_notify, ibm); 671 if (ACPI_FAILURE(status)) { 672 if (status == AE_ALREADY_EXISTS) { 673 printk(TPACPI_NOTICE 674 "another device driver is already " 675 "handling %s events\n", ibm->name); 676 } else { 677 printk(TPACPI_ERR 678 "acpi_install_notify_handler(%s) failed: %d\n", 679 ibm->name, status); 680 } 681 return -ENODEV; 682 } 683 ibm->flags.acpi_notify_installed = 1; 684 return 0; 685 } 686 687 static int __init tpacpi_device_add(struct acpi_device *device) 688 { 689 return 0; 690 } 691 692 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 693 { 694 int rc; 695 696 dbg_printk(TPACPI_DBG_INIT, 697 "registering %s as an ACPI driver\n", ibm->name); 698 699 BUG_ON(!ibm->acpi); 700 701 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 702 if (!ibm->acpi->driver) { 703 printk(TPACPI_ERR 704 "failed to allocate memory for ibm->acpi->driver\n"); 705 return -ENOMEM; 706 } 707 708 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 709 ibm->acpi->driver->ids = ibm->acpi->hid; 710 711 ibm->acpi->driver->ops.add = &tpacpi_device_add; 712 713 rc = acpi_bus_register_driver(ibm->acpi->driver); 714 if (rc < 0) { 715 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", 716 ibm->name, rc); 717 kfree(ibm->acpi->driver); 718 ibm->acpi->driver = NULL; 719 } else if (!rc) 720 ibm->flags.acpi_driver_registered = 1; 721 722 return rc; 723 } 724 725 726 /**************************************************************************** 727 **************************************************************************** 728 * 729 * Procfs Helpers 730 * 731 **************************************************************************** 732 ****************************************************************************/ 733 734 static int dispatch_procfs_read(char *page, char **start, off_t off, 735 int count, int *eof, void *data) 736 { 737 struct ibm_struct *ibm = data; 738 int len; 739 740 if (!ibm || !ibm->read) 741 return -EINVAL; 742 743 len = ibm->read(page); 744 if (len < 0) 745 return len; 746 747 if (len <= off + count) 748 *eof = 1; 749 *start = page + off; 750 len -= off; 751 if (len > count) 752 len = count; 753 if (len < 0) 754 len = 0; 755 756 return len; 757 } 758 759 static int dispatch_procfs_write(struct file *file, 760 const char __user *userbuf, 761 unsigned long count, void *data) 762 { 763 struct ibm_struct *ibm = data; 764 char *kernbuf; 765 int ret; 766 767 if (!ibm || !ibm->write) 768 return -EINVAL; 769 if (count > PAGE_SIZE - 2) 770 return -EINVAL; 771 772 kernbuf = kmalloc(count + 2, GFP_KERNEL); 773 if (!kernbuf) 774 return -ENOMEM; 775 776 if (copy_from_user(kernbuf, userbuf, count)) { 777 kfree(kernbuf); 778 return -EFAULT; 779 } 780 781 kernbuf[count] = 0; 782 strcat(kernbuf, ","); 783 ret = ibm->write(kernbuf); 784 if (ret == 0) 785 ret = count; 786 787 kfree(kernbuf); 788 789 return ret; 790 } 791 792 static char *next_cmd(char **cmds) 793 { 794 char *start = *cmds; 795 char *end; 796 797 while ((end = strchr(start, ',')) && end == start) 798 start = end + 1; 799 800 if (!end) 801 return NULL; 802 803 *end = 0; 804 *cmds = end + 1; 805 return start; 806 } 807 808 809 /**************************************************************************** 810 **************************************************************************** 811 * 812 * Device model: input, hwmon and platform 813 * 814 **************************************************************************** 815 ****************************************************************************/ 816 817 static struct platform_device *tpacpi_pdev; 818 static struct platform_device *tpacpi_sensors_pdev; 819 static struct device *tpacpi_hwmon; 820 static struct input_dev *tpacpi_inputdev; 821 static struct mutex tpacpi_inputdev_send_mutex; 822 static LIST_HEAD(tpacpi_all_drivers); 823 824 static int tpacpi_suspend_handler(struct platform_device *pdev, 825 pm_message_t state) 826 { 827 struct ibm_struct *ibm, *itmp; 828 829 list_for_each_entry_safe(ibm, itmp, 830 &tpacpi_all_drivers, 831 all_drivers) { 832 if (ibm->suspend) 833 (ibm->suspend)(state); 834 } 835 836 return 0; 837 } 838 839 static int tpacpi_resume_handler(struct platform_device *pdev) 840 { 841 struct ibm_struct *ibm, *itmp; 842 843 list_for_each_entry_safe(ibm, itmp, 844 &tpacpi_all_drivers, 845 all_drivers) { 846 if (ibm->resume) 847 (ibm->resume)(); 848 } 849 850 return 0; 851 } 852 853 static void tpacpi_shutdown_handler(struct platform_device *pdev) 854 { 855 struct ibm_struct *ibm, *itmp; 856 857 list_for_each_entry_safe(ibm, itmp, 858 &tpacpi_all_drivers, 859 all_drivers) { 860 if (ibm->shutdown) 861 (ibm->shutdown)(); 862 } 863 } 864 865 static struct platform_driver tpacpi_pdriver = { 866 .driver = { 867 .name = TPACPI_DRVR_NAME, 868 .owner = THIS_MODULE, 869 }, 870 .suspend = tpacpi_suspend_handler, 871 .resume = tpacpi_resume_handler, 872 .shutdown = tpacpi_shutdown_handler, 873 }; 874 875 static struct platform_driver tpacpi_hwmon_pdriver = { 876 .driver = { 877 .name = TPACPI_HWMON_DRVR_NAME, 878 .owner = THIS_MODULE, 879 }, 880 }; 881 882 /************************************************************************* 883 * sysfs support helpers 884 */ 885 886 struct attribute_set { 887 unsigned int members, max_members; 888 struct attribute_group group; 889 }; 890 891 struct attribute_set_obj { 892 struct attribute_set s; 893 struct attribute *a; 894 } __attribute__((packed)); 895 896 static struct attribute_set *create_attr_set(unsigned int max_members, 897 const char *name) 898 { 899 struct attribute_set_obj *sobj; 900 901 if (max_members == 0) 902 return NULL; 903 904 /* Allocates space for implicit NULL at the end too */ 905 sobj = kzalloc(sizeof(struct attribute_set_obj) + 906 max_members * sizeof(struct attribute *), 907 GFP_KERNEL); 908 if (!sobj) 909 return NULL; 910 sobj->s.max_members = max_members; 911 sobj->s.group.attrs = &sobj->a; 912 sobj->s.group.name = name; 913 914 return &sobj->s; 915 } 916 917 #define destroy_attr_set(_set) \ 918 kfree(_set); 919 920 /* not multi-threaded safe, use it in a single thread per set */ 921 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 922 { 923 if (!s || !attr) 924 return -EINVAL; 925 926 if (s->members >= s->max_members) 927 return -ENOMEM; 928 929 s->group.attrs[s->members] = attr; 930 s->members++; 931 932 return 0; 933 } 934 935 static int add_many_to_attr_set(struct attribute_set *s, 936 struct attribute **attr, 937 unsigned int count) 938 { 939 int i, res; 940 941 for (i = 0; i < count; i++) { 942 res = add_to_attr_set(s, attr[i]); 943 if (res) 944 return res; 945 } 946 947 return 0; 948 } 949 950 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 951 { 952 sysfs_remove_group(kobj, &s->group); 953 destroy_attr_set(s); 954 } 955 956 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 957 sysfs_create_group(_kobj, &_attr_set->group) 958 959 static int parse_strtoul(const char *buf, 960 unsigned long max, unsigned long *value) 961 { 962 char *endp; 963 964 while (*buf && isspace(*buf)) 965 buf++; 966 *value = simple_strtoul(buf, &endp, 0); 967 while (*endp && isspace(*endp)) 968 endp++; 969 if (*endp || *value > max) 970 return -EINVAL; 971 972 return 0; 973 } 974 975 static void tpacpi_disable_brightness_delay(void) 976 { 977 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 978 printk(TPACPI_NOTICE 979 "ACPI backlight control delay disabled\n"); 980 } 981 982 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 983 { 984 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 985 union acpi_object *obj; 986 int rc; 987 988 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { 989 obj = (union acpi_object *)buffer.pointer; 990 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 991 printk(TPACPI_ERR "Unknown _BCL data, " 992 "please report this to %s\n", TPACPI_MAIL); 993 rc = 0; 994 } else { 995 rc = obj->package.count; 996 } 997 } else { 998 return 0; 999 } 1000 1001 kfree(buffer.pointer); 1002 return rc; 1003 } 1004 1005 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, 1006 u32 lvl, void *context, void **rv) 1007 { 1008 char name[ACPI_PATH_SEGMENT_LENGTH]; 1009 struct acpi_buffer buffer = { sizeof(name), &name }; 1010 1011 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && 1012 !strncmp("_BCL", name, sizeof(name) - 1)) { 1013 BUG_ON(!rv || !*rv); 1014 **(int **)rv = tpacpi_query_bcl_levels(handle); 1015 return AE_CTRL_TERMINATE; 1016 } else { 1017 return AE_OK; 1018 } 1019 } 1020 1021 /* 1022 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 1023 */ 1024 static int __init tpacpi_check_std_acpi_brightness_support(void) 1025 { 1026 int status; 1027 int bcl_levels = 0; 1028 void *bcl_ptr = &bcl_levels; 1029 1030 if (!vid_handle) { 1031 TPACPI_ACPIHANDLE_INIT(vid); 1032 } 1033 if (!vid_handle) 1034 return 0; 1035 1036 /* 1037 * Search for a _BCL method, and execute it. This is safe on all 1038 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista 1039 * BIOS in ACPI backlight control mode. We do NOT have to care 1040 * about calling the _BCL method in an enabled video device, any 1041 * will do for our purposes. 1042 */ 1043 1044 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, 1045 tpacpi_acpi_walk_find_bcl, NULL, 1046 &bcl_ptr); 1047 1048 if (ACPI_SUCCESS(status) && bcl_levels > 2) { 1049 tp_features.bright_acpimode = 1; 1050 return (bcl_levels - 2); 1051 } 1052 1053 return 0; 1054 } 1055 1056 static void printk_deprecated_attribute(const char * const what, 1057 const char * const details) 1058 { 1059 tpacpi_log_usertask("deprecated sysfs attribute"); 1060 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and " 1061 "will be removed. %s\n", 1062 what, details); 1063 } 1064 1065 /************************************************************************* 1066 * rfkill and radio control support helpers 1067 */ 1068 1069 /* 1070 * ThinkPad-ACPI firmware handling model: 1071 * 1072 * WLSW (master wireless switch) is event-driven, and is common to all 1073 * firmware-controlled radios. It cannot be controlled, just monitored, 1074 * as expected. It overrides all radio state in firmware 1075 * 1076 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1077 * (TODO: verify how WLSW interacts with the returned radio state). 1078 * 1079 * The only time there are shadow radio state changes, is when 1080 * masked-off hotkeys are used. 1081 */ 1082 1083 /* 1084 * Internal driver API for radio state: 1085 * 1086 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1087 * bool: true means radio blocked (off) 1088 */ 1089 enum tpacpi_rfkill_state { 1090 TPACPI_RFK_RADIO_OFF = 0, 1091 TPACPI_RFK_RADIO_ON 1092 }; 1093 1094 /* rfkill switches */ 1095 enum tpacpi_rfk_id { 1096 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1097 TPACPI_RFK_WWAN_SW_ID, 1098 TPACPI_RFK_UWB_SW_ID, 1099 TPACPI_RFK_SW_MAX 1100 }; 1101 1102 static const char *tpacpi_rfkill_names[] = { 1103 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1104 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1105 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1106 [TPACPI_RFK_SW_MAX] = NULL 1107 }; 1108 1109 /* ThinkPad-ACPI rfkill subdriver */ 1110 struct tpacpi_rfk { 1111 struct rfkill *rfkill; 1112 enum tpacpi_rfk_id id; 1113 const struct tpacpi_rfk_ops *ops; 1114 }; 1115 1116 struct tpacpi_rfk_ops { 1117 /* firmware interface */ 1118 int (*get_status)(void); 1119 int (*set_status)(const enum tpacpi_rfkill_state); 1120 }; 1121 1122 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1123 1124 /* Query FW and update rfkill sw state for a given rfkill switch */ 1125 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1126 { 1127 int status; 1128 1129 if (!tp_rfk) 1130 return -ENODEV; 1131 1132 status = (tp_rfk->ops->get_status)(); 1133 if (status < 0) 1134 return status; 1135 1136 rfkill_set_sw_state(tp_rfk->rfkill, 1137 (status == TPACPI_RFK_RADIO_OFF)); 1138 1139 return status; 1140 } 1141 1142 /* Query FW and update rfkill sw state for all rfkill switches */ 1143 static void tpacpi_rfk_update_swstate_all(void) 1144 { 1145 unsigned int i; 1146 1147 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1148 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1149 } 1150 1151 /* 1152 * Sync the HW-blocking state of all rfkill switches, 1153 * do notice it causes the rfkill core to schedule uevents 1154 */ 1155 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1156 { 1157 unsigned int i; 1158 struct tpacpi_rfk *tp_rfk; 1159 1160 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1161 tp_rfk = tpacpi_rfkill_switches[i]; 1162 if (tp_rfk) { 1163 if (rfkill_set_hw_state(tp_rfk->rfkill, 1164 blocked)) { 1165 /* ignore -- we track sw block */ 1166 } 1167 } 1168 } 1169 } 1170 1171 /* Call to get the WLSW state from the firmware */ 1172 static int hotkey_get_wlsw(void); 1173 1174 /* Call to query WLSW state and update all rfkill switches */ 1175 static bool tpacpi_rfk_check_hwblock_state(void) 1176 { 1177 int res = hotkey_get_wlsw(); 1178 int hw_blocked; 1179 1180 /* When unknown or unsupported, we have to assume it is unblocked */ 1181 if (res < 0) 1182 return false; 1183 1184 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1185 tpacpi_rfk_update_hwblock_state(hw_blocked); 1186 1187 return hw_blocked; 1188 } 1189 1190 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1191 { 1192 struct tpacpi_rfk *tp_rfk = data; 1193 int res; 1194 1195 dbg_printk(TPACPI_DBG_RFKILL, 1196 "request to change radio state to %s\n", 1197 blocked ? "blocked" : "unblocked"); 1198 1199 /* try to set radio state */ 1200 res = (tp_rfk->ops->set_status)(blocked ? 1201 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1202 1203 /* and update the rfkill core with whatever the FW really did */ 1204 tpacpi_rfk_update_swstate(tp_rfk); 1205 1206 return (res < 0) ? res : 0; 1207 } 1208 1209 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1210 .set_block = tpacpi_rfk_hook_set_block, 1211 }; 1212 1213 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1214 const struct tpacpi_rfk_ops *tp_rfkops, 1215 const enum rfkill_type rfktype, 1216 const char *name, 1217 const bool set_default) 1218 { 1219 struct tpacpi_rfk *atp_rfk; 1220 int res; 1221 bool sw_state = false; 1222 int sw_status; 1223 1224 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1225 1226 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1227 if (atp_rfk) 1228 atp_rfk->rfkill = rfkill_alloc(name, 1229 &tpacpi_pdev->dev, 1230 rfktype, 1231 &tpacpi_rfk_rfkill_ops, 1232 atp_rfk); 1233 if (!atp_rfk || !atp_rfk->rfkill) { 1234 printk(TPACPI_ERR 1235 "failed to allocate memory for rfkill class\n"); 1236 kfree(atp_rfk); 1237 return -ENOMEM; 1238 } 1239 1240 atp_rfk->id = id; 1241 atp_rfk->ops = tp_rfkops; 1242 1243 sw_status = (tp_rfkops->get_status)(); 1244 if (sw_status < 0) { 1245 printk(TPACPI_ERR 1246 "failed to read initial state for %s, error %d\n", 1247 name, sw_status); 1248 } else { 1249 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1250 if (set_default) { 1251 /* try to keep the initial state, since we ask the 1252 * firmware to preserve it across S5 in NVRAM */ 1253 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1254 } 1255 } 1256 rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state()); 1257 1258 res = rfkill_register(atp_rfk->rfkill); 1259 if (res < 0) { 1260 printk(TPACPI_ERR 1261 "failed to register %s rfkill switch: %d\n", 1262 name, res); 1263 rfkill_destroy(atp_rfk->rfkill); 1264 kfree(atp_rfk); 1265 return res; 1266 } 1267 1268 tpacpi_rfkill_switches[id] = atp_rfk; 1269 return 0; 1270 } 1271 1272 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1273 { 1274 struct tpacpi_rfk *tp_rfk; 1275 1276 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1277 1278 tp_rfk = tpacpi_rfkill_switches[id]; 1279 if (tp_rfk) { 1280 rfkill_unregister(tp_rfk->rfkill); 1281 tpacpi_rfkill_switches[id] = NULL; 1282 kfree(tp_rfk); 1283 } 1284 } 1285 1286 static void printk_deprecated_rfkill_attribute(const char * const what) 1287 { 1288 printk_deprecated_attribute(what, 1289 "Please switch to generic rfkill before year 2010"); 1290 } 1291 1292 /* sysfs <radio> enable ------------------------------------------------ */ 1293 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1294 struct device_attribute *attr, 1295 char *buf) 1296 { 1297 int status; 1298 1299 printk_deprecated_rfkill_attribute(attr->attr.name); 1300 1301 /* This is in the ABI... */ 1302 if (tpacpi_rfk_check_hwblock_state()) { 1303 status = TPACPI_RFK_RADIO_OFF; 1304 } else { 1305 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1306 if (status < 0) 1307 return status; 1308 } 1309 1310 return snprintf(buf, PAGE_SIZE, "%d\n", 1311 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1312 } 1313 1314 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1315 struct device_attribute *attr, 1316 const char *buf, size_t count) 1317 { 1318 unsigned long t; 1319 int res; 1320 1321 printk_deprecated_rfkill_attribute(attr->attr.name); 1322 1323 if (parse_strtoul(buf, 1, &t)) 1324 return -EINVAL; 1325 1326 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1327 1328 /* This is in the ABI... */ 1329 if (tpacpi_rfk_check_hwblock_state() && !!t) 1330 return -EPERM; 1331 1332 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1333 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1334 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1335 1336 return (res < 0) ? res : count; 1337 } 1338 1339 /* procfs -------------------------------------------------------------- */ 1340 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p) 1341 { 1342 int len = 0; 1343 1344 if (id >= TPACPI_RFK_SW_MAX) 1345 len += sprintf(p + len, "status:\t\tnot supported\n"); 1346 else { 1347 int status; 1348 1349 /* This is in the ABI... */ 1350 if (tpacpi_rfk_check_hwblock_state()) { 1351 status = TPACPI_RFK_RADIO_OFF; 1352 } else { 1353 status = tpacpi_rfk_update_swstate( 1354 tpacpi_rfkill_switches[id]); 1355 if (status < 0) 1356 return status; 1357 } 1358 1359 len += sprintf(p + len, "status:\t\t%s\n", 1360 (status == TPACPI_RFK_RADIO_ON) ? 1361 "enabled" : "disabled"); 1362 len += sprintf(p + len, "commands:\tenable, disable\n"); 1363 } 1364 1365 return len; 1366 } 1367 1368 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1369 { 1370 char *cmd; 1371 int status = -1; 1372 int res = 0; 1373 1374 if (id >= TPACPI_RFK_SW_MAX) 1375 return -ENODEV; 1376 1377 while ((cmd = next_cmd(&buf))) { 1378 if (strlencmp(cmd, "enable") == 0) 1379 status = TPACPI_RFK_RADIO_ON; 1380 else if (strlencmp(cmd, "disable") == 0) 1381 status = TPACPI_RFK_RADIO_OFF; 1382 else 1383 return -EINVAL; 1384 } 1385 1386 if (status != -1) { 1387 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1388 (status == TPACPI_RFK_RADIO_ON) ? 1389 "enable" : "disable", 1390 tpacpi_rfkill_names[id]); 1391 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1392 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1393 } 1394 1395 return res; 1396 } 1397 1398 /************************************************************************* 1399 * thinkpad-acpi driver attributes 1400 */ 1401 1402 /* interface_version --------------------------------------------------- */ 1403 static ssize_t tpacpi_driver_interface_version_show( 1404 struct device_driver *drv, 1405 char *buf) 1406 { 1407 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1408 } 1409 1410 static DRIVER_ATTR(interface_version, S_IRUGO, 1411 tpacpi_driver_interface_version_show, NULL); 1412 1413 /* debug_level --------------------------------------------------------- */ 1414 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, 1415 char *buf) 1416 { 1417 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1418 } 1419 1420 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, 1421 const char *buf, size_t count) 1422 { 1423 unsigned long t; 1424 1425 if (parse_strtoul(buf, 0xffff, &t)) 1426 return -EINVAL; 1427 1428 dbg_level = t; 1429 1430 return count; 1431 } 1432 1433 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, 1434 tpacpi_driver_debug_show, tpacpi_driver_debug_store); 1435 1436 /* version ------------------------------------------------------------- */ 1437 static ssize_t tpacpi_driver_version_show(struct device_driver *drv, 1438 char *buf) 1439 { 1440 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1441 TPACPI_DESC, TPACPI_VERSION); 1442 } 1443 1444 static DRIVER_ATTR(version, S_IRUGO, 1445 tpacpi_driver_version_show, NULL); 1446 1447 /* --------------------------------------------------------------------- */ 1448 1449 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1450 1451 /* wlsw_emulstate ------------------------------------------------------ */ 1452 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, 1453 char *buf) 1454 { 1455 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1456 } 1457 1458 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, 1459 const char *buf, size_t count) 1460 { 1461 unsigned long t; 1462 1463 if (parse_strtoul(buf, 1, &t)) 1464 return -EINVAL; 1465 1466 if (tpacpi_wlsw_emulstate != !!t) { 1467 tpacpi_wlsw_emulstate = !!t; 1468 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1469 } 1470 1471 return count; 1472 } 1473 1474 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO, 1475 tpacpi_driver_wlsw_emulstate_show, 1476 tpacpi_driver_wlsw_emulstate_store); 1477 1478 /* bluetooth_emulstate ------------------------------------------------- */ 1479 static ssize_t tpacpi_driver_bluetooth_emulstate_show( 1480 struct device_driver *drv, 1481 char *buf) 1482 { 1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1484 } 1485 1486 static ssize_t tpacpi_driver_bluetooth_emulstate_store( 1487 struct device_driver *drv, 1488 const char *buf, size_t count) 1489 { 1490 unsigned long t; 1491 1492 if (parse_strtoul(buf, 1, &t)) 1493 return -EINVAL; 1494 1495 tpacpi_bluetooth_emulstate = !!t; 1496 1497 return count; 1498 } 1499 1500 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO, 1501 tpacpi_driver_bluetooth_emulstate_show, 1502 tpacpi_driver_bluetooth_emulstate_store); 1503 1504 /* wwan_emulstate ------------------------------------------------- */ 1505 static ssize_t tpacpi_driver_wwan_emulstate_show( 1506 struct device_driver *drv, 1507 char *buf) 1508 { 1509 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1510 } 1511 1512 static ssize_t tpacpi_driver_wwan_emulstate_store( 1513 struct device_driver *drv, 1514 const char *buf, size_t count) 1515 { 1516 unsigned long t; 1517 1518 if (parse_strtoul(buf, 1, &t)) 1519 return -EINVAL; 1520 1521 tpacpi_wwan_emulstate = !!t; 1522 1523 return count; 1524 } 1525 1526 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO, 1527 tpacpi_driver_wwan_emulstate_show, 1528 tpacpi_driver_wwan_emulstate_store); 1529 1530 /* uwb_emulstate ------------------------------------------------- */ 1531 static ssize_t tpacpi_driver_uwb_emulstate_show( 1532 struct device_driver *drv, 1533 char *buf) 1534 { 1535 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1536 } 1537 1538 static ssize_t tpacpi_driver_uwb_emulstate_store( 1539 struct device_driver *drv, 1540 const char *buf, size_t count) 1541 { 1542 unsigned long t; 1543 1544 if (parse_strtoul(buf, 1, &t)) 1545 return -EINVAL; 1546 1547 tpacpi_uwb_emulstate = !!t; 1548 1549 return count; 1550 } 1551 1552 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO, 1553 tpacpi_driver_uwb_emulstate_show, 1554 tpacpi_driver_uwb_emulstate_store); 1555 #endif 1556 1557 /* --------------------------------------------------------------------- */ 1558 1559 static struct driver_attribute *tpacpi_driver_attributes[] = { 1560 &driver_attr_debug_level, &driver_attr_version, 1561 &driver_attr_interface_version, 1562 }; 1563 1564 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1565 { 1566 int i, res; 1567 1568 i = 0; 1569 res = 0; 1570 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1571 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1572 i++; 1573 } 1574 1575 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1576 if (!res && dbg_wlswemul) 1577 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1578 if (!res && dbg_bluetoothemul) 1579 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1580 if (!res && dbg_wwanemul) 1581 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1582 if (!res && dbg_uwbemul) 1583 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1584 #endif 1585 1586 return res; 1587 } 1588 1589 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1590 { 1591 int i; 1592 1593 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1594 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1595 1596 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1597 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1598 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1599 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1600 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1601 #endif 1602 } 1603 1604 /**************************************************************************** 1605 **************************************************************************** 1606 * 1607 * Subdrivers 1608 * 1609 **************************************************************************** 1610 ****************************************************************************/ 1611 1612 /************************************************************************* 1613 * thinkpad-acpi init subdriver 1614 */ 1615 1616 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) 1617 { 1618 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 1619 printk(TPACPI_INFO "%s\n", TPACPI_URL); 1620 1621 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", 1622 (thinkpad_id.bios_version_str) ? 1623 thinkpad_id.bios_version_str : "unknown", 1624 (thinkpad_id.ec_version_str) ? 1625 thinkpad_id.ec_version_str : "unknown"); 1626 1627 if (thinkpad_id.vendor && thinkpad_id.model_str) 1628 printk(TPACPI_INFO "%s %s, model %s\n", 1629 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 1630 "IBM" : ((thinkpad_id.vendor == 1631 PCI_VENDOR_ID_LENOVO) ? 1632 "Lenovo" : "Unknown vendor"), 1633 thinkpad_id.model_str, 1634 (thinkpad_id.nummodel_str) ? 1635 thinkpad_id.nummodel_str : "unknown"); 1636 1637 return 0; 1638 } 1639 1640 static int thinkpad_acpi_driver_read(char *p) 1641 { 1642 int len = 0; 1643 1644 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); 1645 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); 1646 1647 return len; 1648 } 1649 1650 static struct ibm_struct thinkpad_acpi_driver_data = { 1651 .name = "driver", 1652 .read = thinkpad_acpi_driver_read, 1653 }; 1654 1655 /************************************************************************* 1656 * Hotkey subdriver 1657 */ 1658 1659 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1660 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1661 TP_ACPI_HOTKEYSCAN_FNF2, 1662 TP_ACPI_HOTKEYSCAN_FNF3, 1663 TP_ACPI_HOTKEYSCAN_FNF4, 1664 TP_ACPI_HOTKEYSCAN_FNF5, 1665 TP_ACPI_HOTKEYSCAN_FNF6, 1666 TP_ACPI_HOTKEYSCAN_FNF7, 1667 TP_ACPI_HOTKEYSCAN_FNF8, 1668 TP_ACPI_HOTKEYSCAN_FNF9, 1669 TP_ACPI_HOTKEYSCAN_FNF10, 1670 TP_ACPI_HOTKEYSCAN_FNF11, 1671 TP_ACPI_HOTKEYSCAN_FNF12, 1672 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1673 TP_ACPI_HOTKEYSCAN_FNINSERT, 1674 TP_ACPI_HOTKEYSCAN_FNDELETE, 1675 TP_ACPI_HOTKEYSCAN_FNHOME, 1676 TP_ACPI_HOTKEYSCAN_FNEND, 1677 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1678 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1679 TP_ACPI_HOTKEYSCAN_FNSPACE, 1680 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1681 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1682 TP_ACPI_HOTKEYSCAN_MUTE, 1683 TP_ACPI_HOTKEYSCAN_THINKPAD, 1684 }; 1685 1686 enum { /* Keys available through NVRAM polling */ 1687 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1688 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1689 }; 1690 1691 enum { /* Positions of some of the keys in hotkey masks */ 1692 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1693 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1694 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1695 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1696 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1697 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1698 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1699 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1700 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1701 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1702 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1703 }; 1704 1705 enum { /* NVRAM to ACPI HKEY group map */ 1706 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1707 TP_ACPI_HKEY_ZOOM_MASK | 1708 TP_ACPI_HKEY_DISPSWTCH_MASK | 1709 TP_ACPI_HKEY_HIBERNATE_MASK, 1710 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1711 TP_ACPI_HKEY_BRGHTDWN_MASK, 1712 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1713 TP_ACPI_HKEY_VOLDWN_MASK | 1714 TP_ACPI_HKEY_MUTE_MASK, 1715 }; 1716 1717 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1718 struct tp_nvram_state { 1719 u16 thinkpad_toggle:1; 1720 u16 zoom_toggle:1; 1721 u16 display_toggle:1; 1722 u16 thinklight_toggle:1; 1723 u16 hibernate_toggle:1; 1724 u16 displayexp_toggle:1; 1725 u16 display_state:1; 1726 u16 brightness_toggle:1; 1727 u16 volume_toggle:1; 1728 u16 mute:1; 1729 1730 u8 brightness_level; 1731 u8 volume_level; 1732 }; 1733 1734 static struct task_struct *tpacpi_hotkey_task; 1735 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1736 static int hotkey_poll_freq = 10; /* Hz */ 1737 static struct mutex hotkey_thread_mutex; 1738 static struct mutex hotkey_thread_data_mutex; 1739 static unsigned int hotkey_config_change; 1740 1741 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1742 1743 #define hotkey_source_mask 0U 1744 1745 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1746 1747 static struct mutex hotkey_mutex; 1748 1749 static enum { /* Reasons for waking up */ 1750 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1751 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1752 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1753 } hotkey_wakeup_reason; 1754 1755 static int hotkey_autosleep_ack; 1756 1757 static u32 hotkey_orig_mask; 1758 static u32 hotkey_all_mask; 1759 static u32 hotkey_reserved_mask; 1760 static u32 hotkey_mask; 1761 1762 static unsigned int hotkey_report_mode; 1763 1764 static u16 *hotkey_keycode_map; 1765 1766 static struct attribute_set *hotkey_dev_attributes; 1767 1768 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1769 #define HOTKEY_CONFIG_CRITICAL_START \ 1770 do { \ 1771 mutex_lock(&hotkey_thread_data_mutex); \ 1772 hotkey_config_change++; \ 1773 } while (0); 1774 #define HOTKEY_CONFIG_CRITICAL_END \ 1775 mutex_unlock(&hotkey_thread_data_mutex); 1776 #else 1777 #define HOTKEY_CONFIG_CRITICAL_START 1778 #define HOTKEY_CONFIG_CRITICAL_END 1779 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1780 1781 /* HKEY.MHKG() return bits */ 1782 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1783 1784 static int hotkey_get_wlsw(void) 1785 { 1786 int status; 1787 1788 if (!tp_features.hotkey_wlsw) 1789 return -ENODEV; 1790 1791 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1792 if (dbg_wlswemul) 1793 return (tpacpi_wlsw_emulstate) ? 1794 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1795 #endif 1796 1797 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1798 return -EIO; 1799 1800 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1801 } 1802 1803 static int hotkey_get_tablet_mode(int *status) 1804 { 1805 int s; 1806 1807 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 1808 return -EIO; 1809 1810 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 1811 return 0; 1812 } 1813 1814 /* 1815 * Call with hotkey_mutex held 1816 */ 1817 static int hotkey_mask_get(void) 1818 { 1819 u32 m = 0; 1820 1821 if (tp_features.hotkey_mask) { 1822 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 1823 return -EIO; 1824 } 1825 hotkey_mask = m | (hotkey_source_mask & hotkey_mask); 1826 1827 return 0; 1828 } 1829 1830 /* 1831 * Call with hotkey_mutex held 1832 */ 1833 static int hotkey_mask_set(u32 mask) 1834 { 1835 int i; 1836 int rc = 0; 1837 1838 if (tp_features.hotkey_mask) { 1839 if (!tp_warned.hotkey_mask_ff && 1840 (mask == 0xffff || mask == 0xffffff || 1841 mask == 0xffffffff)) { 1842 tp_warned.hotkey_mask_ff = 1; 1843 printk(TPACPI_NOTICE 1844 "setting the hotkey mask to 0x%08x is likely " 1845 "not the best way to go about it\n", mask); 1846 printk(TPACPI_NOTICE 1847 "please consider using the driver defaults, " 1848 "and refer to up-to-date thinkpad-acpi " 1849 "documentation\n"); 1850 } 1851 1852 HOTKEY_CONFIG_CRITICAL_START 1853 for (i = 0; i < 32; i++) { 1854 u32 m = 1 << i; 1855 /* enable in firmware mask only keys not in NVRAM 1856 * mode, but enable the key in the cached hotkey_mask 1857 * regardless of mode, or the key will end up 1858 * disabled by hotkey_mask_get() */ 1859 if (!acpi_evalf(hkey_handle, 1860 NULL, "MHKM", "vdd", i + 1, 1861 !!((mask & ~hotkey_source_mask) & m))) { 1862 rc = -EIO; 1863 break; 1864 } else { 1865 hotkey_mask = (hotkey_mask & ~m) | (mask & m); 1866 } 1867 } 1868 HOTKEY_CONFIG_CRITICAL_END 1869 1870 /* hotkey_mask_get must be called unconditionally below */ 1871 if (!hotkey_mask_get() && !rc && 1872 (hotkey_mask & ~hotkey_source_mask) != 1873 (mask & ~hotkey_source_mask)) { 1874 printk(TPACPI_NOTICE 1875 "requested hot key mask 0x%08x, but " 1876 "firmware forced it to 0x%08x\n", 1877 mask, hotkey_mask); 1878 } 1879 } else { 1880 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1881 HOTKEY_CONFIG_CRITICAL_START 1882 hotkey_mask = mask & hotkey_source_mask; 1883 HOTKEY_CONFIG_CRITICAL_END 1884 hotkey_mask_get(); 1885 if (hotkey_mask != mask) { 1886 printk(TPACPI_NOTICE 1887 "requested hot key mask 0x%08x, " 1888 "forced to 0x%08x (NVRAM poll mask is " 1889 "0x%08x): no firmware mask support\n", 1890 mask, hotkey_mask, hotkey_source_mask); 1891 } 1892 #else 1893 hotkey_mask_get(); 1894 rc = -ENXIO; 1895 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1896 } 1897 1898 return rc; 1899 } 1900 1901 static int hotkey_status_get(int *status) 1902 { 1903 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 1904 return -EIO; 1905 1906 return 0; 1907 } 1908 1909 static int hotkey_status_set(bool enable) 1910 { 1911 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 1912 return -EIO; 1913 1914 return 0; 1915 } 1916 1917 static void tpacpi_input_send_tabletsw(void) 1918 { 1919 int state; 1920 1921 if (tp_features.hotkey_tablet && 1922 !hotkey_get_tablet_mode(&state)) { 1923 mutex_lock(&tpacpi_inputdev_send_mutex); 1924 1925 input_report_switch(tpacpi_inputdev, 1926 SW_TABLET_MODE, !!state); 1927 input_sync(tpacpi_inputdev); 1928 1929 mutex_unlock(&tpacpi_inputdev_send_mutex); 1930 } 1931 } 1932 1933 static void tpacpi_input_send_key(unsigned int scancode) 1934 { 1935 unsigned int keycode; 1936 1937 keycode = hotkey_keycode_map[scancode]; 1938 1939 if (keycode != KEY_RESERVED) { 1940 mutex_lock(&tpacpi_inputdev_send_mutex); 1941 1942 input_report_key(tpacpi_inputdev, keycode, 1); 1943 if (keycode == KEY_UNKNOWN) 1944 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, 1945 scancode); 1946 input_sync(tpacpi_inputdev); 1947 1948 input_report_key(tpacpi_inputdev, keycode, 0); 1949 if (keycode == KEY_UNKNOWN) 1950 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, 1951 scancode); 1952 input_sync(tpacpi_inputdev); 1953 1954 mutex_unlock(&tpacpi_inputdev_send_mutex); 1955 } 1956 } 1957 1958 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1959 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 1960 1961 static void tpacpi_hotkey_send_key(unsigned int scancode) 1962 { 1963 tpacpi_input_send_key(scancode); 1964 if (hotkey_report_mode < 2) { 1965 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, 1966 0x80, 0x1001 + scancode); 1967 } 1968 } 1969 1970 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m) 1971 { 1972 u8 d; 1973 1974 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 1975 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 1976 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 1977 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 1978 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 1979 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 1980 } 1981 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { 1982 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 1983 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 1984 } 1985 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 1986 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 1987 n->displayexp_toggle = 1988 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 1989 } 1990 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 1991 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 1992 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 1993 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 1994 n->brightness_toggle = 1995 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 1996 } 1997 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 1998 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 1999 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2000 >> TP_NVRAM_POS_LEVEL_VOLUME; 2001 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2002 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2003 } 2004 } 2005 2006 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2007 do { \ 2008 if ((mask & (1 << __scancode)) && \ 2009 oldn->__member != newn->__member) \ 2010 tpacpi_hotkey_send_key(__scancode); \ 2011 } while (0) 2012 2013 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2014 do { if (mask & (1 << __scancode)) \ 2015 tpacpi_hotkey_send_key(__scancode); } while (0) 2016 2017 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2018 struct tp_nvram_state *newn, 2019 u32 mask) 2020 { 2021 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2022 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2023 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2024 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2025 2026 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2027 2028 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2029 2030 /* handle volume */ 2031 if (oldn->volume_toggle != newn->volume_toggle) { 2032 if (oldn->mute != newn->mute) { 2033 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2034 } 2035 if (oldn->volume_level > newn->volume_level) { 2036 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2037 } else if (oldn->volume_level < newn->volume_level) { 2038 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2039 } else if (oldn->mute == newn->mute) { 2040 /* repeated key presses that didn't change state */ 2041 if (newn->mute) { 2042 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2043 } else if (newn->volume_level != 0) { 2044 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2045 } else { 2046 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2047 } 2048 } 2049 } 2050 2051 /* handle brightness */ 2052 if (oldn->brightness_toggle != newn->brightness_toggle) { 2053 if (oldn->brightness_level < newn->brightness_level) { 2054 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2055 } else if (oldn->brightness_level > newn->brightness_level) { 2056 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2057 } else { 2058 /* repeated key presses that didn't change state */ 2059 if (newn->brightness_level != 0) { 2060 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2061 } else { 2062 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2063 } 2064 } 2065 } 2066 } 2067 2068 #undef TPACPI_COMPARE_KEY 2069 #undef TPACPI_MAY_SEND_KEY 2070 2071 static int hotkey_kthread(void *data) 2072 { 2073 struct tp_nvram_state s[2]; 2074 u32 mask; 2075 unsigned int si, so; 2076 unsigned long t; 2077 unsigned int change_detector, must_reset; 2078 2079 mutex_lock(&hotkey_thread_mutex); 2080 2081 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2082 goto exit; 2083 2084 set_freezable(); 2085 2086 so = 0; 2087 si = 1; 2088 t = 0; 2089 2090 /* Initial state for compares */ 2091 mutex_lock(&hotkey_thread_data_mutex); 2092 change_detector = hotkey_config_change; 2093 mask = hotkey_source_mask & hotkey_mask; 2094 mutex_unlock(&hotkey_thread_data_mutex); 2095 hotkey_read_nvram(&s[so], mask); 2096 2097 while (!kthread_should_stop() && hotkey_poll_freq) { 2098 if (t == 0) 2099 t = 1000/hotkey_poll_freq; 2100 t = msleep_interruptible(t); 2101 if (unlikely(kthread_should_stop())) 2102 break; 2103 must_reset = try_to_freeze(); 2104 if (t > 0 && !must_reset) 2105 continue; 2106 2107 mutex_lock(&hotkey_thread_data_mutex); 2108 if (must_reset || hotkey_config_change != change_detector) { 2109 /* forget old state on thaw or config change */ 2110 si = so; 2111 t = 0; 2112 change_detector = hotkey_config_change; 2113 } 2114 mask = hotkey_source_mask & hotkey_mask; 2115 mutex_unlock(&hotkey_thread_data_mutex); 2116 2117 if (likely(mask)) { 2118 hotkey_read_nvram(&s[si], mask); 2119 if (likely(si != so)) { 2120 hotkey_compare_and_issue_event(&s[so], &s[si], 2121 mask); 2122 } 2123 } 2124 2125 so = si; 2126 si ^= 1; 2127 } 2128 2129 exit: 2130 mutex_unlock(&hotkey_thread_mutex); 2131 return 0; 2132 } 2133 2134 static void hotkey_poll_stop_sync(void) 2135 { 2136 if (tpacpi_hotkey_task) { 2137 if (frozen(tpacpi_hotkey_task) || 2138 freezing(tpacpi_hotkey_task)) 2139 thaw_process(tpacpi_hotkey_task); 2140 2141 kthread_stop(tpacpi_hotkey_task); 2142 tpacpi_hotkey_task = NULL; 2143 mutex_lock(&hotkey_thread_mutex); 2144 /* at this point, the thread did exit */ 2145 mutex_unlock(&hotkey_thread_mutex); 2146 } 2147 } 2148 2149 /* call with hotkey_mutex held */ 2150 static void hotkey_poll_setup(int may_warn) 2151 { 2152 if ((hotkey_source_mask & hotkey_mask) != 0 && 2153 hotkey_poll_freq > 0 && 2154 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { 2155 if (!tpacpi_hotkey_task) { 2156 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2157 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2158 if (IS_ERR(tpacpi_hotkey_task)) { 2159 tpacpi_hotkey_task = NULL; 2160 printk(TPACPI_ERR 2161 "could not create kernel thread " 2162 "for hotkey polling\n"); 2163 } 2164 } 2165 } else { 2166 hotkey_poll_stop_sync(); 2167 if (may_warn && 2168 hotkey_source_mask != 0 && hotkey_poll_freq == 0) { 2169 printk(TPACPI_NOTICE 2170 "hot keys 0x%08x require polling, " 2171 "which is currently disabled\n", 2172 hotkey_source_mask); 2173 } 2174 } 2175 } 2176 2177 static void hotkey_poll_setup_safe(int may_warn) 2178 { 2179 mutex_lock(&hotkey_mutex); 2180 hotkey_poll_setup(may_warn); 2181 mutex_unlock(&hotkey_mutex); 2182 } 2183 2184 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2185 2186 static void hotkey_poll_setup_safe(int __unused) 2187 { 2188 } 2189 2190 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2191 2192 static int hotkey_inputdev_open(struct input_dev *dev) 2193 { 2194 switch (tpacpi_lifecycle) { 2195 case TPACPI_LIFE_INIT: 2196 /* 2197 * hotkey_init will call hotkey_poll_setup_safe 2198 * at the appropriate moment 2199 */ 2200 return 0; 2201 case TPACPI_LIFE_EXITING: 2202 return -EBUSY; 2203 case TPACPI_LIFE_RUNNING: 2204 hotkey_poll_setup_safe(0); 2205 return 0; 2206 } 2207 2208 /* Should only happen if tpacpi_lifecycle is corrupt */ 2209 BUG(); 2210 return -EBUSY; 2211 } 2212 2213 static void hotkey_inputdev_close(struct input_dev *dev) 2214 { 2215 /* disable hotkey polling when possible */ 2216 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING) 2217 hotkey_poll_setup_safe(0); 2218 } 2219 2220 /* sysfs hotkey enable ------------------------------------------------- */ 2221 static ssize_t hotkey_enable_show(struct device *dev, 2222 struct device_attribute *attr, 2223 char *buf) 2224 { 2225 int res, status; 2226 2227 printk_deprecated_attribute("hotkey_enable", 2228 "Hotkey reporting is always enabled"); 2229 2230 res = hotkey_status_get(&status); 2231 if (res) 2232 return res; 2233 2234 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2235 } 2236 2237 static ssize_t hotkey_enable_store(struct device *dev, 2238 struct device_attribute *attr, 2239 const char *buf, size_t count) 2240 { 2241 unsigned long t; 2242 2243 printk_deprecated_attribute("hotkey_enable", 2244 "Hotkeys can be disabled through hotkey_mask"); 2245 2246 if (parse_strtoul(buf, 1, &t)) 2247 return -EINVAL; 2248 2249 if (t == 0) 2250 return -EPERM; 2251 2252 return count; 2253 } 2254 2255 static struct device_attribute dev_attr_hotkey_enable = 2256 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, 2257 hotkey_enable_show, hotkey_enable_store); 2258 2259 /* sysfs hotkey mask --------------------------------------------------- */ 2260 static ssize_t hotkey_mask_show(struct device *dev, 2261 struct device_attribute *attr, 2262 char *buf) 2263 { 2264 int res; 2265 2266 if (mutex_lock_killable(&hotkey_mutex)) 2267 return -ERESTARTSYS; 2268 res = hotkey_mask_get(); 2269 mutex_unlock(&hotkey_mutex); 2270 2271 return (res)? 2272 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask); 2273 } 2274 2275 static ssize_t hotkey_mask_store(struct device *dev, 2276 struct device_attribute *attr, 2277 const char *buf, size_t count) 2278 { 2279 unsigned long t; 2280 int res; 2281 2282 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2283 return -EINVAL; 2284 2285 if (mutex_lock_killable(&hotkey_mutex)) 2286 return -ERESTARTSYS; 2287 2288 res = hotkey_mask_set(t); 2289 2290 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2291 hotkey_poll_setup(1); 2292 #endif 2293 2294 mutex_unlock(&hotkey_mutex); 2295 2296 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2297 2298 return (res) ? res : count; 2299 } 2300 2301 static struct device_attribute dev_attr_hotkey_mask = 2302 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, 2303 hotkey_mask_show, hotkey_mask_store); 2304 2305 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2306 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2307 struct device_attribute *attr, 2308 char *buf) 2309 { 2310 return sprintf(buf, "0\n"); 2311 } 2312 2313 static struct device_attribute dev_attr_hotkey_bios_enabled = 2314 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); 2315 2316 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2317 static ssize_t hotkey_bios_mask_show(struct device *dev, 2318 struct device_attribute *attr, 2319 char *buf) 2320 { 2321 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2322 } 2323 2324 static struct device_attribute dev_attr_hotkey_bios_mask = 2325 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); 2326 2327 /* sysfs hotkey all_mask ----------------------------------------------- */ 2328 static ssize_t hotkey_all_mask_show(struct device *dev, 2329 struct device_attribute *attr, 2330 char *buf) 2331 { 2332 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2333 hotkey_all_mask | hotkey_source_mask); 2334 } 2335 2336 static struct device_attribute dev_attr_hotkey_all_mask = 2337 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); 2338 2339 /* sysfs hotkey recommended_mask --------------------------------------- */ 2340 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2341 struct device_attribute *attr, 2342 char *buf) 2343 { 2344 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2345 (hotkey_all_mask | hotkey_source_mask) 2346 & ~hotkey_reserved_mask); 2347 } 2348 2349 static struct device_attribute dev_attr_hotkey_recommended_mask = 2350 __ATTR(hotkey_recommended_mask, S_IRUGO, 2351 hotkey_recommended_mask_show, NULL); 2352 2353 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2354 2355 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2356 static ssize_t hotkey_source_mask_show(struct device *dev, 2357 struct device_attribute *attr, 2358 char *buf) 2359 { 2360 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2361 } 2362 2363 static ssize_t hotkey_source_mask_store(struct device *dev, 2364 struct device_attribute *attr, 2365 const char *buf, size_t count) 2366 { 2367 unsigned long t; 2368 2369 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2370 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2371 return -EINVAL; 2372 2373 if (mutex_lock_killable(&hotkey_mutex)) 2374 return -ERESTARTSYS; 2375 2376 HOTKEY_CONFIG_CRITICAL_START 2377 hotkey_source_mask = t; 2378 HOTKEY_CONFIG_CRITICAL_END 2379 2380 hotkey_poll_setup(1); 2381 2382 mutex_unlock(&hotkey_mutex); 2383 2384 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2385 2386 return count; 2387 } 2388 2389 static struct device_attribute dev_attr_hotkey_source_mask = 2390 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, 2391 hotkey_source_mask_show, hotkey_source_mask_store); 2392 2393 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2394 static ssize_t hotkey_poll_freq_show(struct device *dev, 2395 struct device_attribute *attr, 2396 char *buf) 2397 { 2398 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2399 } 2400 2401 static ssize_t hotkey_poll_freq_store(struct device *dev, 2402 struct device_attribute *attr, 2403 const char *buf, size_t count) 2404 { 2405 unsigned long t; 2406 2407 if (parse_strtoul(buf, 25, &t)) 2408 return -EINVAL; 2409 2410 if (mutex_lock_killable(&hotkey_mutex)) 2411 return -ERESTARTSYS; 2412 2413 hotkey_poll_freq = t; 2414 2415 hotkey_poll_setup(1); 2416 mutex_unlock(&hotkey_mutex); 2417 2418 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2419 2420 return count; 2421 } 2422 2423 static struct device_attribute dev_attr_hotkey_poll_freq = 2424 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, 2425 hotkey_poll_freq_show, hotkey_poll_freq_store); 2426 2427 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2428 2429 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2430 static ssize_t hotkey_radio_sw_show(struct device *dev, 2431 struct device_attribute *attr, 2432 char *buf) 2433 { 2434 int res; 2435 res = hotkey_get_wlsw(); 2436 if (res < 0) 2437 return res; 2438 2439 /* Opportunistic update */ 2440 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2441 2442 return snprintf(buf, PAGE_SIZE, "%d\n", 2443 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2444 } 2445 2446 static struct device_attribute dev_attr_hotkey_radio_sw = 2447 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); 2448 2449 static void hotkey_radio_sw_notify_change(void) 2450 { 2451 if (tp_features.hotkey_wlsw) 2452 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2453 "hotkey_radio_sw"); 2454 } 2455 2456 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2457 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2458 struct device_attribute *attr, 2459 char *buf) 2460 { 2461 int res, s; 2462 res = hotkey_get_tablet_mode(&s); 2463 if (res < 0) 2464 return res; 2465 2466 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2467 } 2468 2469 static struct device_attribute dev_attr_hotkey_tablet_mode = 2470 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL); 2471 2472 static void hotkey_tablet_mode_notify_change(void) 2473 { 2474 if (tp_features.hotkey_tablet) 2475 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2476 "hotkey_tablet_mode"); 2477 } 2478 2479 /* sysfs hotkey report_mode -------------------------------------------- */ 2480 static ssize_t hotkey_report_mode_show(struct device *dev, 2481 struct device_attribute *attr, 2482 char *buf) 2483 { 2484 return snprintf(buf, PAGE_SIZE, "%d\n", 2485 (hotkey_report_mode != 0) ? hotkey_report_mode : 1); 2486 } 2487 2488 static struct device_attribute dev_attr_hotkey_report_mode = 2489 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); 2490 2491 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2492 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2493 struct device_attribute *attr, 2494 char *buf) 2495 { 2496 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 2497 } 2498 2499 static struct device_attribute dev_attr_hotkey_wakeup_reason = 2500 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2501 2502 static void hotkey_wakeup_reason_notify_change(void) 2503 { 2504 if (tp_features.hotkey_mask) 2505 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2506 "wakeup_reason"); 2507 } 2508 2509 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2510 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2511 struct device_attribute *attr, 2512 char *buf) 2513 { 2514 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 2515 } 2516 2517 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete = 2518 __ATTR(wakeup_hotunplug_complete, S_IRUGO, 2519 hotkey_wakeup_hotunplug_complete_show, NULL); 2520 2521 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2522 { 2523 if (tp_features.hotkey_mask) 2524 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2525 "wakeup_hotunplug_complete"); 2526 } 2527 2528 /* --------------------------------------------------------------------- */ 2529 2530 static struct attribute *hotkey_attributes[] __initdata = { 2531 &dev_attr_hotkey_enable.attr, 2532 &dev_attr_hotkey_bios_enabled.attr, 2533 &dev_attr_hotkey_report_mode.attr, 2534 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2535 &dev_attr_hotkey_mask.attr, 2536 &dev_attr_hotkey_all_mask.attr, 2537 &dev_attr_hotkey_recommended_mask.attr, 2538 &dev_attr_hotkey_source_mask.attr, 2539 &dev_attr_hotkey_poll_freq.attr, 2540 #endif 2541 }; 2542 2543 static struct attribute *hotkey_mask_attributes[] __initdata = { 2544 &dev_attr_hotkey_bios_mask.attr, 2545 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2546 &dev_attr_hotkey_mask.attr, 2547 &dev_attr_hotkey_all_mask.attr, 2548 &dev_attr_hotkey_recommended_mask.attr, 2549 #endif 2550 &dev_attr_hotkey_wakeup_reason.attr, 2551 &dev_attr_hotkey_wakeup_hotunplug_complete.attr, 2552 }; 2553 2554 /* 2555 * Sync both the hw and sw blocking state of all switches 2556 */ 2557 static void tpacpi_send_radiosw_update(void) 2558 { 2559 int wlsw; 2560 2561 /* 2562 * We must sync all rfkill controllers *before* issuing any 2563 * rfkill input events, or we will race the rfkill core input 2564 * handler. 2565 * 2566 * tpacpi_inputdev_send_mutex works as a syncronization point 2567 * for the above. 2568 * 2569 * We optimize to avoid numerous calls to hotkey_get_wlsw. 2570 */ 2571 2572 wlsw = hotkey_get_wlsw(); 2573 2574 /* Sync hw blocking state first if it is hw-blocked */ 2575 if (wlsw == TPACPI_RFK_RADIO_OFF) 2576 tpacpi_rfk_update_hwblock_state(true); 2577 2578 /* Sync sw blocking state */ 2579 tpacpi_rfk_update_swstate_all(); 2580 2581 /* Sync hw blocking state last if it is hw-unblocked */ 2582 if (wlsw == TPACPI_RFK_RADIO_ON) 2583 tpacpi_rfk_update_hwblock_state(false); 2584 2585 /* Issue rfkill input event for WLSW switch */ 2586 if (!(wlsw < 0)) { 2587 mutex_lock(&tpacpi_inputdev_send_mutex); 2588 2589 input_report_switch(tpacpi_inputdev, 2590 SW_RFKILL_ALL, (wlsw > 0)); 2591 input_sync(tpacpi_inputdev); 2592 2593 mutex_unlock(&tpacpi_inputdev_send_mutex); 2594 } 2595 2596 /* 2597 * this can be unconditional, as we will poll state again 2598 * if userspace uses the notify to read data 2599 */ 2600 hotkey_radio_sw_notify_change(); 2601 } 2602 2603 static void hotkey_exit(void) 2604 { 2605 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2606 hotkey_poll_stop_sync(); 2607 #endif 2608 2609 if (hotkey_dev_attributes) 2610 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 2611 2612 kfree(hotkey_keycode_map); 2613 2614 if (tp_features.hotkey) { 2615 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 2616 "restoring original hot key mask\n"); 2617 /* no short-circuit boolean operator below! */ 2618 if ((hotkey_mask_set(hotkey_orig_mask) | 2619 hotkey_status_set(false)) != 0) 2620 printk(TPACPI_ERR 2621 "failed to restore hot key mask " 2622 "to BIOS defaults\n"); 2623 } 2624 } 2625 2626 static int __init hotkey_init(struct ibm_init_struct *iibm) 2627 { 2628 /* Requirements for changing the default keymaps: 2629 * 2630 * 1. Many of the keys are mapped to KEY_RESERVED for very 2631 * good reasons. Do not change them unless you have deep 2632 * knowledge on the IBM and Lenovo ThinkPad firmware for 2633 * the various ThinkPad models. The driver behaves 2634 * differently for KEY_RESERVED: such keys have their 2635 * hot key mask *unset* in mask_recommended, and also 2636 * in the initial hot key mask programmed into the 2637 * firmware at driver load time, which means the firm- 2638 * ware may react very differently if you change them to 2639 * something else; 2640 * 2641 * 2. You must be subscribed to the linux-thinkpad and 2642 * ibm-acpi-devel mailing lists, and you should read the 2643 * list archives since 2007 if you want to change the 2644 * keymaps. This requirement exists so that you will 2645 * know the past history of problems with the thinkpad- 2646 * acpi driver keymaps, and also that you will be 2647 * listening to any bug reports; 2648 * 2649 * 3. Do not send thinkpad-acpi specific patches directly to 2650 * for merging, *ever*. Send them to the linux-acpi 2651 * mailinglist for comments. Merging is to be done only 2652 * through acpi-test and the ACPI maintainer. 2653 * 2654 * If the above is too much to ask, don't change the keymap. 2655 * Ask the thinkpad-acpi maintainer to do it, instead. 2656 */ 2657 static u16 ibm_keycode_map[] __initdata = { 2658 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 2659 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, 2660 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 2661 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 2662 2663 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 2664 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 2665 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 2666 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 2667 2668 /* brightness: firmware always reacts to them, unless 2669 * X.org did some tricks in the radeon BIOS scratch 2670 * registers of *some* models */ 2671 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 2672 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 2673 2674 /* Thinklight: firmware always react to it */ 2675 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 2676 2677 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 2678 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 2679 2680 /* Volume: firmware always react to it and reprograms 2681 * the built-in *extra* mixer. Never map it to control 2682 * another mixer by default. */ 2683 KEY_RESERVED, /* 0x14: VOLUME UP */ 2684 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 2685 KEY_RESERVED, /* 0x16: MUTE */ 2686 2687 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 2688 2689 /* (assignments unknown, please report if found) */ 2690 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 2691 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 2692 }; 2693 static u16 lenovo_keycode_map[] __initdata = { 2694 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 2695 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 2696 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 2697 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 2698 2699 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 2700 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 2701 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 2702 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 2703 2704 /* These either have to go through ACPI video, or 2705 * act like in the IBM ThinkPads, so don't ever 2706 * enable them by default */ 2707 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 2708 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 2709 2710 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 2711 2712 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 2713 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 2714 2715 /* Volume: z60/z61, T60 (BIOS version?): firmware always 2716 * react to it and reprograms the built-in *extra* mixer. 2717 * Never map it to control another mixer by default. 2718 * 2719 * T60?, T61, R60?, R61: firmware and EC tries to send 2720 * these over the regular keyboard, so these are no-ops, 2721 * but there are still weird bugs re. MUTE, so do not 2722 * change unless you get test reports from all Lenovo 2723 * models. May cause the BIOS to interfere with the 2724 * HDA mixer. 2725 */ 2726 KEY_RESERVED, /* 0x14: VOLUME UP */ 2727 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 2728 KEY_RESERVED, /* 0x16: MUTE */ 2729 2730 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 2731 2732 /* (assignments unknown, please report if found) */ 2733 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 2734 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 2735 }; 2736 2737 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) 2738 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) 2739 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) 2740 2741 int res, i; 2742 int status; 2743 int hkeyv; 2744 2745 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2746 "initializing hotkey subdriver\n"); 2747 2748 BUG_ON(!tpacpi_inputdev); 2749 BUG_ON(tpacpi_inputdev->open != NULL || 2750 tpacpi_inputdev->close != NULL); 2751 2752 TPACPI_ACPIHANDLE_INIT(hkey); 2753 mutex_init(&hotkey_mutex); 2754 2755 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2756 mutex_init(&hotkey_thread_mutex); 2757 mutex_init(&hotkey_thread_data_mutex); 2758 #endif 2759 2760 /* hotkey not supported on 570 */ 2761 tp_features.hotkey = hkey_handle != NULL; 2762 2763 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2764 "hotkeys are %s\n", 2765 str_supported(tp_features.hotkey)); 2766 2767 if (!tp_features.hotkey) 2768 return 1; 2769 2770 tpacpi_disable_brightness_delay(); 2771 2772 hotkey_dev_attributes = create_attr_set(13, NULL); 2773 if (!hotkey_dev_attributes) 2774 return -ENOMEM; 2775 res = add_many_to_attr_set(hotkey_dev_attributes, 2776 hotkey_attributes, 2777 ARRAY_SIZE(hotkey_attributes)); 2778 if (res) 2779 goto err_exit; 2780 2781 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 2782 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 2783 for HKEY interface version 0x100 */ 2784 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 2785 if ((hkeyv >> 8) != 1) { 2786 printk(TPACPI_ERR "unknown version of the " 2787 "HKEY interface: 0x%x\n", hkeyv); 2788 printk(TPACPI_ERR "please report this to %s\n", 2789 TPACPI_MAIL); 2790 } else { 2791 /* 2792 * MHKV 0x100 in A31, R40, R40e, 2793 * T4x, X31, and later 2794 */ 2795 tp_features.hotkey_mask = 1; 2796 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2797 "firmware HKEY interface version: 0x%x\n", 2798 hkeyv); 2799 } 2800 } 2801 2802 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2803 "hotkey masks are %s\n", 2804 str_supported(tp_features.hotkey_mask)); 2805 2806 if (tp_features.hotkey_mask) { 2807 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 2808 "MHKA", "qd")) { 2809 printk(TPACPI_ERR 2810 "missing MHKA handler, " 2811 "please report this to %s\n", 2812 TPACPI_MAIL); 2813 /* FN+F12, FN+F4, FN+F3 */ 2814 hotkey_all_mask = 0x080cU; 2815 } 2816 } 2817 2818 /* hotkey_source_mask *must* be zero for 2819 * the first hotkey_mask_get */ 2820 if (tp_features.hotkey_mask) { 2821 res = hotkey_mask_get(); 2822 if (res) 2823 goto err_exit; 2824 2825 hotkey_orig_mask = hotkey_mask; 2826 res = add_many_to_attr_set( 2827 hotkey_dev_attributes, 2828 hotkey_mask_attributes, 2829 ARRAY_SIZE(hotkey_mask_attributes)); 2830 if (res) 2831 goto err_exit; 2832 } 2833 2834 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2835 if (tp_features.hotkey_mask) { 2836 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 2837 & ~hotkey_all_mask; 2838 } else { 2839 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; 2840 } 2841 2842 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2843 "hotkey source mask 0x%08x, polling freq %d\n", 2844 hotkey_source_mask, hotkey_poll_freq); 2845 #endif 2846 2847 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2848 if (dbg_wlswemul) { 2849 tp_features.hotkey_wlsw = 1; 2850 printk(TPACPI_INFO 2851 "radio switch emulation enabled\n"); 2852 } else 2853 #endif 2854 /* Not all thinkpads have a hardware radio switch */ 2855 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 2856 tp_features.hotkey_wlsw = 1; 2857 printk(TPACPI_INFO 2858 "radio switch found; radios are %s\n", 2859 enabled(status, 0)); 2860 } 2861 if (tp_features.hotkey_wlsw) 2862 res = add_to_attr_set(hotkey_dev_attributes, 2863 &dev_attr_hotkey_radio_sw.attr); 2864 2865 /* For X41t, X60t, X61t Tablets... */ 2866 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { 2867 tp_features.hotkey_tablet = 1; 2868 printk(TPACPI_INFO 2869 "possible tablet mode switch found; " 2870 "ThinkPad in %s mode\n", 2871 (status & TP_HOTKEY_TABLET_MASK)? 2872 "tablet" : "laptop"); 2873 res = add_to_attr_set(hotkey_dev_attributes, 2874 &dev_attr_hotkey_tablet_mode.attr); 2875 } 2876 2877 if (!res) 2878 res = register_attr_set_with_sysfs( 2879 hotkey_dev_attributes, 2880 &tpacpi_pdev->dev.kobj); 2881 if (res) 2882 goto err_exit; 2883 2884 /* Set up key map */ 2885 2886 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, 2887 GFP_KERNEL); 2888 if (!hotkey_keycode_map) { 2889 printk(TPACPI_ERR 2890 "failed to allocate memory for key map\n"); 2891 res = -ENOMEM; 2892 goto err_exit; 2893 } 2894 2895 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { 2896 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2897 "using Lenovo default hot key map\n"); 2898 memcpy(hotkey_keycode_map, &lenovo_keycode_map, 2899 TPACPI_HOTKEY_MAP_SIZE); 2900 } else { 2901 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2902 "using IBM default hot key map\n"); 2903 memcpy(hotkey_keycode_map, &ibm_keycode_map, 2904 TPACPI_HOTKEY_MAP_SIZE); 2905 } 2906 2907 set_bit(EV_KEY, tpacpi_inputdev->evbit); 2908 set_bit(EV_MSC, tpacpi_inputdev->evbit); 2909 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); 2910 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 2911 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 2912 tpacpi_inputdev->keycode = hotkey_keycode_map; 2913 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 2914 if (hotkey_keycode_map[i] != KEY_RESERVED) { 2915 set_bit(hotkey_keycode_map[i], 2916 tpacpi_inputdev->keybit); 2917 } else { 2918 if (i < sizeof(hotkey_reserved_mask)*8) 2919 hotkey_reserved_mask |= 1 << i; 2920 } 2921 } 2922 2923 if (tp_features.hotkey_wlsw) { 2924 set_bit(EV_SW, tpacpi_inputdev->evbit); 2925 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); 2926 } 2927 if (tp_features.hotkey_tablet) { 2928 set_bit(EV_SW, tpacpi_inputdev->evbit); 2929 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); 2930 } 2931 2932 /* Do not issue duplicate brightness change events to 2933 * userspace */ 2934 if (!tp_features.bright_acpimode) 2935 /* update bright_acpimode... */ 2936 tpacpi_check_std_acpi_brightness_support(); 2937 2938 if (tp_features.bright_acpimode && acpi_video_backlight_support()) { 2939 printk(TPACPI_INFO 2940 "This ThinkPad has standard ACPI backlight " 2941 "brightness control, supported by the ACPI " 2942 "video driver\n"); 2943 printk(TPACPI_NOTICE 2944 "Disabling thinkpad-acpi brightness events " 2945 "by default...\n"); 2946 2947 /* The hotkey_reserved_mask change below is not 2948 * necessary while the keys are at KEY_RESERVED in the 2949 * default map, but better safe than sorry, leave it 2950 * here as a marker of what we have to do, especially 2951 * when we finally become able to set this at runtime 2952 * on response to X.org requests */ 2953 hotkey_reserved_mask |= 2954 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 2955 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 2956 } 2957 2958 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2959 "enabling firmware HKEY event interface...\n"); 2960 res = hotkey_status_set(true); 2961 if (res) { 2962 hotkey_exit(); 2963 return res; 2964 } 2965 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) 2966 & ~hotkey_reserved_mask) 2967 | hotkey_orig_mask); 2968 if (res < 0 && res != -ENXIO) { 2969 hotkey_exit(); 2970 return res; 2971 } 2972 2973 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 2974 "legacy ibm/hotkey event reporting over procfs %s\n", 2975 (hotkey_report_mode < 2) ? 2976 "enabled" : "disabled"); 2977 2978 tpacpi_inputdev->open = &hotkey_inputdev_open; 2979 tpacpi_inputdev->close = &hotkey_inputdev_close; 2980 2981 hotkey_poll_setup_safe(1); 2982 tpacpi_send_radiosw_update(); 2983 tpacpi_input_send_tabletsw(); 2984 2985 return 0; 2986 2987 err_exit: 2988 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 2989 hotkey_dev_attributes = NULL; 2990 2991 return (res < 0)? res : 1; 2992 } 2993 2994 static bool hotkey_notify_hotkey(const u32 hkey, 2995 bool *send_acpi_ev, 2996 bool *ignore_acpi_ev) 2997 { 2998 /* 0x1000-0x1FFF: key presses */ 2999 unsigned int scancode = hkey & 0xfff; 3000 *send_acpi_ev = true; 3001 *ignore_acpi_ev = false; 3002 3003 if (scancode > 0 && scancode < 0x21) { 3004 scancode--; 3005 if (!(hotkey_source_mask & (1 << scancode))) { 3006 tpacpi_input_send_key(scancode); 3007 *send_acpi_ev = false; 3008 } else { 3009 *ignore_acpi_ev = true; 3010 } 3011 return true; 3012 } 3013 return false; 3014 } 3015 3016 static bool hotkey_notify_wakeup(const u32 hkey, 3017 bool *send_acpi_ev, 3018 bool *ignore_acpi_ev) 3019 { 3020 /* 0x2000-0x2FFF: Wakeup reason */ 3021 *send_acpi_ev = true; 3022 *ignore_acpi_ev = false; 3023 3024 switch (hkey) { 3025 case 0x2304: /* suspend, undock */ 3026 case 0x2404: /* hibernation, undock */ 3027 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3028 *ignore_acpi_ev = true; 3029 break; 3030 3031 case 0x2305: /* suspend, bay eject */ 3032 case 0x2405: /* hibernation, bay eject */ 3033 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3034 *ignore_acpi_ev = true; 3035 break; 3036 3037 case 0x2313: /* Battery on critical low level (S3) */ 3038 case 0x2413: /* Battery on critical low level (S4) */ 3039 printk(TPACPI_ALERT 3040 "EMERGENCY WAKEUP: battery almost empty\n"); 3041 /* how to auto-heal: */ 3042 /* 2313: woke up from S3, go to S4/S5 */ 3043 /* 2413: woke up from S4, go to S5 */ 3044 break; 3045 3046 default: 3047 return false; 3048 } 3049 3050 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3051 printk(TPACPI_INFO 3052 "woke up due to a hot-unplug " 3053 "request...\n"); 3054 hotkey_wakeup_reason_notify_change(); 3055 } 3056 return true; 3057 } 3058 3059 static bool hotkey_notify_usrevent(const u32 hkey, 3060 bool *send_acpi_ev, 3061 bool *ignore_acpi_ev) 3062 { 3063 /* 0x5000-0x5FFF: human interface helpers */ 3064 *send_acpi_ev = true; 3065 *ignore_acpi_ev = false; 3066 3067 switch (hkey) { 3068 case 0x5010: /* Lenovo new BIOS: brightness changed */ 3069 case 0x500b: /* X61t: tablet pen inserted into bay */ 3070 case 0x500c: /* X61t: tablet pen removed from bay */ 3071 return true; 3072 3073 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */ 3074 case 0x500a: /* X41t-X61t: swivel down (normal mode) */ 3075 tpacpi_input_send_tabletsw(); 3076 hotkey_tablet_mode_notify_change(); 3077 *send_acpi_ev = false; 3078 return true; 3079 3080 case 0x5001: 3081 case 0x5002: 3082 /* LID switch events. Do not propagate */ 3083 *ignore_acpi_ev = true; 3084 return true; 3085 3086 default: 3087 return false; 3088 } 3089 } 3090 3091 static bool hotkey_notify_thermal(const u32 hkey, 3092 bool *send_acpi_ev, 3093 bool *ignore_acpi_ev) 3094 { 3095 /* 0x6000-0x6FFF: thermal alarms */ 3096 *send_acpi_ev = true; 3097 *ignore_acpi_ev = false; 3098 3099 switch (hkey) { 3100 case 0x6011: 3101 printk(TPACPI_CRIT 3102 "THERMAL ALARM: battery is too hot!\n"); 3103 /* recommended action: warn user through gui */ 3104 return true; 3105 case 0x6012: 3106 printk(TPACPI_ALERT 3107 "THERMAL EMERGENCY: battery is extremely hot!\n"); 3108 /* recommended action: immediate sleep/hibernate */ 3109 return true; 3110 case 0x6021: 3111 printk(TPACPI_CRIT 3112 "THERMAL ALARM: " 3113 "a sensor reports something is too hot!\n"); 3114 /* recommended action: warn user through gui, that */ 3115 /* some internal component is too hot */ 3116 return true; 3117 case 0x6022: 3118 printk(TPACPI_ALERT 3119 "THERMAL EMERGENCY: " 3120 "a sensor reports something is extremely hot!\n"); 3121 /* recommended action: immediate sleep/hibernate */ 3122 return true; 3123 case 0x6030: 3124 printk(TPACPI_INFO 3125 "EC reports that Thermal Table has changed\n"); 3126 /* recommended action: do nothing, we don't have 3127 * Lenovo ATM information */ 3128 return true; 3129 default: 3130 printk(TPACPI_ALERT 3131 "THERMAL ALERT: unknown thermal alarm received\n"); 3132 return false; 3133 } 3134 } 3135 3136 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3137 { 3138 u32 hkey; 3139 bool send_acpi_ev; 3140 bool ignore_acpi_ev; 3141 bool known_ev; 3142 3143 if (event != 0x80) { 3144 printk(TPACPI_ERR 3145 "unknown HKEY notification event %d\n", event); 3146 /* forward it to userspace, maybe it knows how to handle it */ 3147 acpi_bus_generate_netlink_event( 3148 ibm->acpi->device->pnp.device_class, 3149 dev_name(&ibm->acpi->device->dev), 3150 event, 0); 3151 return; 3152 } 3153 3154 while (1) { 3155 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 3156 printk(TPACPI_ERR "failed to retrieve HKEY event\n"); 3157 return; 3158 } 3159 3160 if (hkey == 0) { 3161 /* queue empty */ 3162 return; 3163 } 3164 3165 send_acpi_ev = true; 3166 ignore_acpi_ev = false; 3167 3168 switch (hkey >> 12) { 3169 case 1: 3170 /* 0x1000-0x1FFF: key presses */ 3171 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 3172 &ignore_acpi_ev); 3173 break; 3174 case 2: 3175 /* 0x2000-0x2FFF: Wakeup reason */ 3176 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 3177 &ignore_acpi_ev); 3178 break; 3179 case 3: 3180 /* 0x3000-0x3FFF: bay-related wakeups */ 3181 if (hkey == 0x3003) { 3182 hotkey_autosleep_ack = 1; 3183 printk(TPACPI_INFO 3184 "bay ejected\n"); 3185 hotkey_wakeup_hotunplug_complete_notify_change(); 3186 known_ev = true; 3187 } else { 3188 known_ev = false; 3189 } 3190 break; 3191 case 4: 3192 /* 0x4000-0x4FFF: dock-related wakeups */ 3193 if (hkey == 0x4003) { 3194 hotkey_autosleep_ack = 1; 3195 printk(TPACPI_INFO 3196 "undocked\n"); 3197 hotkey_wakeup_hotunplug_complete_notify_change(); 3198 known_ev = true; 3199 } else { 3200 known_ev = false; 3201 } 3202 break; 3203 case 5: 3204 /* 0x5000-0x5FFF: human interface helpers */ 3205 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 3206 &ignore_acpi_ev); 3207 break; 3208 case 6: 3209 /* 0x6000-0x6FFF: thermal alarms */ 3210 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev, 3211 &ignore_acpi_ev); 3212 break; 3213 case 7: 3214 /* 0x7000-0x7FFF: misc */ 3215 if (tp_features.hotkey_wlsw && hkey == 0x7000) { 3216 tpacpi_send_radiosw_update(); 3217 send_acpi_ev = 0; 3218 known_ev = true; 3219 break; 3220 } 3221 /* fallthrough to default */ 3222 default: 3223 known_ev = false; 3224 } 3225 if (!known_ev) { 3226 printk(TPACPI_NOTICE 3227 "unhandled HKEY event 0x%04x\n", hkey); 3228 printk(TPACPI_NOTICE 3229 "please report the conditions when this " 3230 "event happened to %s\n", TPACPI_MAIL); 3231 } 3232 3233 /* Legacy events */ 3234 if (!ignore_acpi_ev && 3235 (send_acpi_ev || hotkey_report_mode < 2)) { 3236 acpi_bus_generate_proc_event(ibm->acpi->device, 3237 event, hkey); 3238 } 3239 3240 /* netlink events */ 3241 if (!ignore_acpi_ev && send_acpi_ev) { 3242 acpi_bus_generate_netlink_event( 3243 ibm->acpi->device->pnp.device_class, 3244 dev_name(&ibm->acpi->device->dev), 3245 event, hkey); 3246 } 3247 } 3248 } 3249 3250 static void hotkey_suspend(pm_message_t state) 3251 { 3252 /* Do these on suspend, we get the events on early resume! */ 3253 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 3254 hotkey_autosleep_ack = 0; 3255 } 3256 3257 static void hotkey_resume(void) 3258 { 3259 tpacpi_disable_brightness_delay(); 3260 3261 if (hotkey_mask_get()) 3262 printk(TPACPI_ERR 3263 "error while trying to read hot key mask " 3264 "from firmware\n"); 3265 tpacpi_send_radiosw_update(); 3266 hotkey_tablet_mode_notify_change(); 3267 hotkey_wakeup_reason_notify_change(); 3268 hotkey_wakeup_hotunplug_complete_notify_change(); 3269 hotkey_poll_setup_safe(0); 3270 } 3271 3272 /* procfs -------------------------------------------------------------- */ 3273 static int hotkey_read(char *p) 3274 { 3275 int res, status; 3276 int len = 0; 3277 3278 if (!tp_features.hotkey) { 3279 len += sprintf(p + len, "status:\t\tnot supported\n"); 3280 return len; 3281 } 3282 3283 if (mutex_lock_killable(&hotkey_mutex)) 3284 return -ERESTARTSYS; 3285 res = hotkey_status_get(&status); 3286 if (!res) 3287 res = hotkey_mask_get(); 3288 mutex_unlock(&hotkey_mutex); 3289 if (res) 3290 return res; 3291 3292 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); 3293 if (tp_features.hotkey_mask) { 3294 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask); 3295 len += sprintf(p + len, 3296 "commands:\tenable, disable, reset, <mask>\n"); 3297 } else { 3298 len += sprintf(p + len, "mask:\t\tnot supported\n"); 3299 len += sprintf(p + len, "commands:\tenable, disable, reset\n"); 3300 } 3301 3302 return len; 3303 } 3304 3305 static void hotkey_enabledisable_warn(bool enable) 3306 { 3307 tpacpi_log_usertask("procfs hotkey enable/disable"); 3308 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 3309 TPACPI_WARN 3310 "hotkey enable/disable functionality has been " 3311 "removed from the driver. Hotkeys are always " 3312 "enabled\n")) 3313 printk(TPACPI_ERR 3314 "Please remove the hotkey=enable module " 3315 "parameter, it is deprecated. Hotkeys are always " 3316 "enabled\n"); 3317 } 3318 3319 static int hotkey_write(char *buf) 3320 { 3321 int res; 3322 u32 mask; 3323 char *cmd; 3324 3325 if (!tp_features.hotkey) 3326 return -ENODEV; 3327 3328 if (mutex_lock_killable(&hotkey_mutex)) 3329 return -ERESTARTSYS; 3330 3331 mask = hotkey_mask; 3332 3333 res = 0; 3334 while ((cmd = next_cmd(&buf))) { 3335 if (strlencmp(cmd, "enable") == 0) { 3336 hotkey_enabledisable_warn(1); 3337 } else if (strlencmp(cmd, "disable") == 0) { 3338 hotkey_enabledisable_warn(0); 3339 res = -EPERM; 3340 } else if (strlencmp(cmd, "reset") == 0) { 3341 mask = hotkey_orig_mask; 3342 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 3343 /* mask set */ 3344 } else if (sscanf(cmd, "%x", &mask) == 1) { 3345 /* mask set */ 3346 } else { 3347 res = -EINVAL; 3348 goto errexit; 3349 } 3350 } 3351 3352 if (!res) 3353 tpacpi_disclose_usertask("procfs hotkey", 3354 "set mask to 0x%08x\n", mask); 3355 3356 if (!res && mask != hotkey_mask) 3357 res = hotkey_mask_set(mask); 3358 3359 errexit: 3360 mutex_unlock(&hotkey_mutex); 3361 return res; 3362 } 3363 3364 static const struct acpi_device_id ibm_htk_device_ids[] = { 3365 {TPACPI_ACPI_HKEY_HID, 0}, 3366 {"", 0}, 3367 }; 3368 3369 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 3370 .hid = ibm_htk_device_ids, 3371 .notify = hotkey_notify, 3372 .handle = &hkey_handle, 3373 .type = ACPI_DEVICE_NOTIFY, 3374 }; 3375 3376 static struct ibm_struct hotkey_driver_data = { 3377 .name = "hotkey", 3378 .read = hotkey_read, 3379 .write = hotkey_write, 3380 .exit = hotkey_exit, 3381 .resume = hotkey_resume, 3382 .suspend = hotkey_suspend, 3383 .acpi = &ibm_hotkey_acpidriver, 3384 }; 3385 3386 /************************************************************************* 3387 * Bluetooth subdriver 3388 */ 3389 3390 enum { 3391 /* ACPI GBDC/SBDC bits */ 3392 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 3393 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 3394 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 3395 off / last state */ 3396 }; 3397 3398 enum { 3399 /* ACPI \BLTH commands */ 3400 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 3401 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 3402 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 3403 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 3404 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 3405 }; 3406 3407 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 3408 3409 static void bluetooth_suspend(pm_message_t state) 3410 { 3411 /* Try to make sure radio will resume powered off */ 3412 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 3413 TP_ACPI_BLTH_PWR_OFF_ON_RESUME)) 3414 vdbg_printk(TPACPI_DBG_RFKILL, 3415 "bluetooth power down on resume request failed\n"); 3416 } 3417 3418 static int bluetooth_get_status(void) 3419 { 3420 int status; 3421 3422 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3423 if (dbg_bluetoothemul) 3424 return (tpacpi_bluetooth_emulstate) ? 3425 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3426 #endif 3427 3428 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 3429 return -EIO; 3430 3431 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 3432 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3433 } 3434 3435 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 3436 { 3437 int status; 3438 3439 vdbg_printk(TPACPI_DBG_RFKILL, 3440 "will attempt to %s bluetooth\n", 3441 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 3442 3443 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3444 if (dbg_bluetoothemul) { 3445 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 3446 return 0; 3447 } 3448 #endif 3449 3450 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */ 3451 if (state == TPACPI_RFK_RADIO_ON) 3452 status = TP_ACPI_BLUETOOTH_RADIOSSW; 3453 else 3454 status = 0; 3455 3456 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 3457 return -EIO; 3458 3459 return 0; 3460 } 3461 3462 /* sysfs bluetooth enable ---------------------------------------------- */ 3463 static ssize_t bluetooth_enable_show(struct device *dev, 3464 struct device_attribute *attr, 3465 char *buf) 3466 { 3467 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 3468 attr, buf); 3469 } 3470 3471 static ssize_t bluetooth_enable_store(struct device *dev, 3472 struct device_attribute *attr, 3473 const char *buf, size_t count) 3474 { 3475 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 3476 attr, buf, count); 3477 } 3478 3479 static struct device_attribute dev_attr_bluetooth_enable = 3480 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, 3481 bluetooth_enable_show, bluetooth_enable_store); 3482 3483 /* --------------------------------------------------------------------- */ 3484 3485 static struct attribute *bluetooth_attributes[] = { 3486 &dev_attr_bluetooth_enable.attr, 3487 NULL 3488 }; 3489 3490 static const struct attribute_group bluetooth_attr_group = { 3491 .attrs = bluetooth_attributes, 3492 }; 3493 3494 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 3495 .get_status = bluetooth_get_status, 3496 .set_status = bluetooth_set_status, 3497 }; 3498 3499 static void bluetooth_shutdown(void) 3500 { 3501 /* Order firmware to save current state to NVRAM */ 3502 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 3503 TP_ACPI_BLTH_SAVE_STATE)) 3504 printk(TPACPI_NOTICE 3505 "failed to save bluetooth state to NVRAM\n"); 3506 else 3507 vdbg_printk(TPACPI_DBG_RFKILL, 3508 "bluestooth state saved to NVRAM\n"); 3509 } 3510 3511 static void bluetooth_exit(void) 3512 { 3513 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3514 &bluetooth_attr_group); 3515 3516 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 3517 3518 bluetooth_shutdown(); 3519 } 3520 3521 static int __init bluetooth_init(struct ibm_init_struct *iibm) 3522 { 3523 int res; 3524 int status = 0; 3525 3526 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3527 "initializing bluetooth subdriver\n"); 3528 3529 TPACPI_ACPIHANDLE_INIT(hkey); 3530 3531 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 3532 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 3533 tp_features.bluetooth = hkey_handle && 3534 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 3535 3536 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3537 "bluetooth is %s, status 0x%02x\n", 3538 str_supported(tp_features.bluetooth), 3539 status); 3540 3541 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3542 if (dbg_bluetoothemul) { 3543 tp_features.bluetooth = 1; 3544 printk(TPACPI_INFO 3545 "bluetooth switch emulation enabled\n"); 3546 } else 3547 #endif 3548 if (tp_features.bluetooth && 3549 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 3550 /* no bluetooth hardware present in system */ 3551 tp_features.bluetooth = 0; 3552 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3553 "bluetooth hardware not installed\n"); 3554 } 3555 3556 if (!tp_features.bluetooth) 3557 return 1; 3558 3559 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 3560 &bluetooth_tprfk_ops, 3561 RFKILL_TYPE_BLUETOOTH, 3562 TPACPI_RFK_BLUETOOTH_SW_NAME, 3563 true); 3564 if (res) 3565 return res; 3566 3567 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 3568 &bluetooth_attr_group); 3569 if (res) { 3570 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 3571 return res; 3572 } 3573 3574 return 0; 3575 } 3576 3577 /* procfs -------------------------------------------------------------- */ 3578 static int bluetooth_read(char *p) 3579 { 3580 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p); 3581 } 3582 3583 static int bluetooth_write(char *buf) 3584 { 3585 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 3586 } 3587 3588 static struct ibm_struct bluetooth_driver_data = { 3589 .name = "bluetooth", 3590 .read = bluetooth_read, 3591 .write = bluetooth_write, 3592 .exit = bluetooth_exit, 3593 .suspend = bluetooth_suspend, 3594 .shutdown = bluetooth_shutdown, 3595 }; 3596 3597 /************************************************************************* 3598 * Wan subdriver 3599 */ 3600 3601 enum { 3602 /* ACPI GWAN/SWAN bits */ 3603 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 3604 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 3605 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 3606 off / last state */ 3607 }; 3608 3609 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 3610 3611 static void wan_suspend(pm_message_t state) 3612 { 3613 /* Try to make sure radio will resume powered off */ 3614 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd", 3615 TP_ACPI_WGSV_PWR_OFF_ON_RESUME)) 3616 vdbg_printk(TPACPI_DBG_RFKILL, 3617 "WWAN power down on resume request failed\n"); 3618 } 3619 3620 static int wan_get_status(void) 3621 { 3622 int status; 3623 3624 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3625 if (dbg_wwanemul) 3626 return (tpacpi_wwan_emulstate) ? 3627 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3628 #endif 3629 3630 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 3631 return -EIO; 3632 3633 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 3634 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3635 } 3636 3637 static int wan_set_status(enum tpacpi_rfkill_state state) 3638 { 3639 int status; 3640 3641 vdbg_printk(TPACPI_DBG_RFKILL, 3642 "will attempt to %s wwan\n", 3643 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 3644 3645 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3646 if (dbg_wwanemul) { 3647 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 3648 return 0; 3649 } 3650 #endif 3651 3652 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */ 3653 if (state == TPACPI_RFK_RADIO_ON) 3654 status = TP_ACPI_WANCARD_RADIOSSW; 3655 else 3656 status = 0; 3657 3658 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 3659 return -EIO; 3660 3661 return 0; 3662 } 3663 3664 /* sysfs wan enable ---------------------------------------------------- */ 3665 static ssize_t wan_enable_show(struct device *dev, 3666 struct device_attribute *attr, 3667 char *buf) 3668 { 3669 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 3670 attr, buf); 3671 } 3672 3673 static ssize_t wan_enable_store(struct device *dev, 3674 struct device_attribute *attr, 3675 const char *buf, size_t count) 3676 { 3677 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 3678 attr, buf, count); 3679 } 3680 3681 static struct device_attribute dev_attr_wan_enable = 3682 __ATTR(wwan_enable, S_IWUSR | S_IRUGO, 3683 wan_enable_show, wan_enable_store); 3684 3685 /* --------------------------------------------------------------------- */ 3686 3687 static struct attribute *wan_attributes[] = { 3688 &dev_attr_wan_enable.attr, 3689 NULL 3690 }; 3691 3692 static const struct attribute_group wan_attr_group = { 3693 .attrs = wan_attributes, 3694 }; 3695 3696 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 3697 .get_status = wan_get_status, 3698 .set_status = wan_set_status, 3699 }; 3700 3701 static void wan_shutdown(void) 3702 { 3703 /* Order firmware to save current state to NVRAM */ 3704 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 3705 TP_ACPI_WGSV_SAVE_STATE)) 3706 printk(TPACPI_NOTICE 3707 "failed to save WWAN state to NVRAM\n"); 3708 else 3709 vdbg_printk(TPACPI_DBG_RFKILL, 3710 "WWAN state saved to NVRAM\n"); 3711 } 3712 3713 static void wan_exit(void) 3714 { 3715 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3716 &wan_attr_group); 3717 3718 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 3719 3720 wan_shutdown(); 3721 } 3722 3723 static int __init wan_init(struct ibm_init_struct *iibm) 3724 { 3725 int res; 3726 int status = 0; 3727 3728 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3729 "initializing wan subdriver\n"); 3730 3731 TPACPI_ACPIHANDLE_INIT(hkey); 3732 3733 tp_features.wan = hkey_handle && 3734 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 3735 3736 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3737 "wan is %s, status 0x%02x\n", 3738 str_supported(tp_features.wan), 3739 status); 3740 3741 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3742 if (dbg_wwanemul) { 3743 tp_features.wan = 1; 3744 printk(TPACPI_INFO 3745 "wwan switch emulation enabled\n"); 3746 } else 3747 #endif 3748 if (tp_features.wan && 3749 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 3750 /* no wan hardware present in system */ 3751 tp_features.wan = 0; 3752 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3753 "wan hardware not installed\n"); 3754 } 3755 3756 if (!tp_features.wan) 3757 return 1; 3758 3759 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 3760 &wan_tprfk_ops, 3761 RFKILL_TYPE_WWAN, 3762 TPACPI_RFK_WWAN_SW_NAME, 3763 true); 3764 if (res) 3765 return res; 3766 3767 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 3768 &wan_attr_group); 3769 3770 if (res) { 3771 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 3772 return res; 3773 } 3774 3775 return 0; 3776 } 3777 3778 /* procfs -------------------------------------------------------------- */ 3779 static int wan_read(char *p) 3780 { 3781 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p); 3782 } 3783 3784 static int wan_write(char *buf) 3785 { 3786 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 3787 } 3788 3789 static struct ibm_struct wan_driver_data = { 3790 .name = "wan", 3791 .read = wan_read, 3792 .write = wan_write, 3793 .exit = wan_exit, 3794 .suspend = wan_suspend, 3795 .shutdown = wan_shutdown, 3796 }; 3797 3798 /************************************************************************* 3799 * UWB subdriver 3800 */ 3801 3802 enum { 3803 /* ACPI GUWB/SUWB bits */ 3804 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 3805 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 3806 }; 3807 3808 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 3809 3810 static int uwb_get_status(void) 3811 { 3812 int status; 3813 3814 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3815 if (dbg_uwbemul) 3816 return (tpacpi_uwb_emulstate) ? 3817 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3818 #endif 3819 3820 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 3821 return -EIO; 3822 3823 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 3824 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3825 } 3826 3827 static int uwb_set_status(enum tpacpi_rfkill_state state) 3828 { 3829 int status; 3830 3831 vdbg_printk(TPACPI_DBG_RFKILL, 3832 "will attempt to %s UWB\n", 3833 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 3834 3835 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3836 if (dbg_uwbemul) { 3837 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 3838 return 0; 3839 } 3840 #endif 3841 3842 if (state == TPACPI_RFK_RADIO_ON) 3843 status = TP_ACPI_UWB_RADIOSSW; 3844 else 3845 status = 0; 3846 3847 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 3848 return -EIO; 3849 3850 return 0; 3851 } 3852 3853 /* --------------------------------------------------------------------- */ 3854 3855 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 3856 .get_status = uwb_get_status, 3857 .set_status = uwb_set_status, 3858 }; 3859 3860 static void uwb_exit(void) 3861 { 3862 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 3863 } 3864 3865 static int __init uwb_init(struct ibm_init_struct *iibm) 3866 { 3867 int res; 3868 int status = 0; 3869 3870 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3871 "initializing uwb subdriver\n"); 3872 3873 TPACPI_ACPIHANDLE_INIT(hkey); 3874 3875 tp_features.uwb = hkey_handle && 3876 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 3877 3878 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3879 "uwb is %s, status 0x%02x\n", 3880 str_supported(tp_features.uwb), 3881 status); 3882 3883 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3884 if (dbg_uwbemul) { 3885 tp_features.uwb = 1; 3886 printk(TPACPI_INFO 3887 "uwb switch emulation enabled\n"); 3888 } else 3889 #endif 3890 if (tp_features.uwb && 3891 !(status & TP_ACPI_UWB_HWPRESENT)) { 3892 /* no uwb hardware present in system */ 3893 tp_features.uwb = 0; 3894 dbg_printk(TPACPI_DBG_INIT, 3895 "uwb hardware not installed\n"); 3896 } 3897 3898 if (!tp_features.uwb) 3899 return 1; 3900 3901 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 3902 &uwb_tprfk_ops, 3903 RFKILL_TYPE_UWB, 3904 TPACPI_RFK_UWB_SW_NAME, 3905 false); 3906 return res; 3907 } 3908 3909 static struct ibm_struct uwb_driver_data = { 3910 .name = "uwb", 3911 .exit = uwb_exit, 3912 .flags.experimental = 1, 3913 }; 3914 3915 /************************************************************************* 3916 * Video subdriver 3917 */ 3918 3919 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 3920 3921 enum video_access_mode { 3922 TPACPI_VIDEO_NONE = 0, 3923 TPACPI_VIDEO_570, /* 570 */ 3924 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 3925 TPACPI_VIDEO_NEW, /* all others */ 3926 }; 3927 3928 enum { /* video status flags, based on VIDEO_570 */ 3929 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 3930 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 3931 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 3932 }; 3933 3934 enum { /* TPACPI_VIDEO_570 constants */ 3935 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 3936 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 3937 * video_status_flags */ 3938 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 3939 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 3940 }; 3941 3942 static enum video_access_mode video_supported; 3943 static int video_orig_autosw; 3944 3945 static int video_autosw_get(void); 3946 static int video_autosw_set(int enable); 3947 3948 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 3949 3950 static int __init video_init(struct ibm_init_struct *iibm) 3951 { 3952 int ivga; 3953 3954 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 3955 3956 TPACPI_ACPIHANDLE_INIT(vid); 3957 TPACPI_ACPIHANDLE_INIT(vid2); 3958 3959 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 3960 /* G41, assume IVGA doesn't change */ 3961 vid_handle = vid2_handle; 3962 3963 if (!vid_handle) 3964 /* video switching not supported on R30, R31 */ 3965 video_supported = TPACPI_VIDEO_NONE; 3966 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 3967 /* 570 */ 3968 video_supported = TPACPI_VIDEO_570; 3969 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 3970 /* 600e/x, 770e, 770x */ 3971 video_supported = TPACPI_VIDEO_770; 3972 else 3973 /* all others */ 3974 video_supported = TPACPI_VIDEO_NEW; 3975 3976 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 3977 str_supported(video_supported != TPACPI_VIDEO_NONE), 3978 video_supported); 3979 3980 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; 3981 } 3982 3983 static void video_exit(void) 3984 { 3985 dbg_printk(TPACPI_DBG_EXIT, 3986 "restoring original video autoswitch mode\n"); 3987 if (video_autosw_set(video_orig_autosw)) 3988 printk(TPACPI_ERR "error while trying to restore original " 3989 "video autoswitch mode\n"); 3990 } 3991 3992 static int video_outputsw_get(void) 3993 { 3994 int status = 0; 3995 int i; 3996 3997 switch (video_supported) { 3998 case TPACPI_VIDEO_570: 3999 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4000 TP_ACPI_VIDEO_570_PHSCMD)) 4001 return -EIO; 4002 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4003 break; 4004 case TPACPI_VIDEO_770: 4005 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4006 return -EIO; 4007 if (i) 4008 status |= TP_ACPI_VIDEO_S_LCD; 4009 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4010 return -EIO; 4011 if (i) 4012 status |= TP_ACPI_VIDEO_S_CRT; 4013 break; 4014 case TPACPI_VIDEO_NEW: 4015 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4016 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4017 return -EIO; 4018 if (i) 4019 status |= TP_ACPI_VIDEO_S_CRT; 4020 4021 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4022 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4023 return -EIO; 4024 if (i) 4025 status |= TP_ACPI_VIDEO_S_LCD; 4026 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4027 return -EIO; 4028 if (i) 4029 status |= TP_ACPI_VIDEO_S_DVI; 4030 break; 4031 default: 4032 return -ENOSYS; 4033 } 4034 4035 return status; 4036 } 4037 4038 static int video_outputsw_set(int status) 4039 { 4040 int autosw; 4041 int res = 0; 4042 4043 switch (video_supported) { 4044 case TPACPI_VIDEO_570: 4045 res = acpi_evalf(NULL, NULL, 4046 "\\_SB.PHS2", "vdd", 4047 TP_ACPI_VIDEO_570_PHS2CMD, 4048 status | TP_ACPI_VIDEO_570_PHS2SET); 4049 break; 4050 case TPACPI_VIDEO_770: 4051 autosw = video_autosw_get(); 4052 if (autosw < 0) 4053 return autosw; 4054 4055 res = video_autosw_set(1); 4056 if (res) 4057 return res; 4058 res = acpi_evalf(vid_handle, NULL, 4059 "ASWT", "vdd", status * 0x100, 0); 4060 if (!autosw && video_autosw_set(autosw)) { 4061 printk(TPACPI_ERR 4062 "video auto-switch left enabled due to error\n"); 4063 return -EIO; 4064 } 4065 break; 4066 case TPACPI_VIDEO_NEW: 4067 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4068 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4069 break; 4070 default: 4071 return -ENOSYS; 4072 } 4073 4074 return (res)? 0 : -EIO; 4075 } 4076 4077 static int video_autosw_get(void) 4078 { 4079 int autosw = 0; 4080 4081 switch (video_supported) { 4082 case TPACPI_VIDEO_570: 4083 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4084 return -EIO; 4085 break; 4086 case TPACPI_VIDEO_770: 4087 case TPACPI_VIDEO_NEW: 4088 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4089 return -EIO; 4090 break; 4091 default: 4092 return -ENOSYS; 4093 } 4094 4095 return autosw & 1; 4096 } 4097 4098 static int video_autosw_set(int enable) 4099 { 4100 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) 4101 return -EIO; 4102 return 0; 4103 } 4104 4105 static int video_outputsw_cycle(void) 4106 { 4107 int autosw = video_autosw_get(); 4108 int res; 4109 4110 if (autosw < 0) 4111 return autosw; 4112 4113 switch (video_supported) { 4114 case TPACPI_VIDEO_570: 4115 res = video_autosw_set(1); 4116 if (res) 4117 return res; 4118 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 4119 break; 4120 case TPACPI_VIDEO_770: 4121 case TPACPI_VIDEO_NEW: 4122 res = video_autosw_set(1); 4123 if (res) 4124 return res; 4125 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 4126 break; 4127 default: 4128 return -ENOSYS; 4129 } 4130 if (!autosw && video_autosw_set(autosw)) { 4131 printk(TPACPI_ERR 4132 "video auto-switch left enabled due to error\n"); 4133 return -EIO; 4134 } 4135 4136 return (res)? 0 : -EIO; 4137 } 4138 4139 static int video_expand_toggle(void) 4140 { 4141 switch (video_supported) { 4142 case TPACPI_VIDEO_570: 4143 return acpi_evalf(ec_handle, NULL, "_Q17", "v")? 4144 0 : -EIO; 4145 case TPACPI_VIDEO_770: 4146 return acpi_evalf(vid_handle, NULL, "VEXP", "v")? 4147 0 : -EIO; 4148 case TPACPI_VIDEO_NEW: 4149 return acpi_evalf(NULL, NULL, "\\VEXP", "v")? 4150 0 : -EIO; 4151 default: 4152 return -ENOSYS; 4153 } 4154 /* not reached */ 4155 } 4156 4157 static int video_read(char *p) 4158 { 4159 int status, autosw; 4160 int len = 0; 4161 4162 if (video_supported == TPACPI_VIDEO_NONE) { 4163 len += sprintf(p + len, "status:\t\tnot supported\n"); 4164 return len; 4165 } 4166 4167 status = video_outputsw_get(); 4168 if (status < 0) 4169 return status; 4170 4171 autosw = video_autosw_get(); 4172 if (autosw < 0) 4173 return autosw; 4174 4175 len += sprintf(p + len, "status:\t\tsupported\n"); 4176 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); 4177 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); 4178 if (video_supported == TPACPI_VIDEO_NEW) 4179 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); 4180 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); 4181 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); 4182 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); 4183 if (video_supported == TPACPI_VIDEO_NEW) 4184 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); 4185 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); 4186 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); 4187 4188 return len; 4189 } 4190 4191 static int video_write(char *buf) 4192 { 4193 char *cmd; 4194 int enable, disable, status; 4195 int res; 4196 4197 if (video_supported == TPACPI_VIDEO_NONE) 4198 return -ENODEV; 4199 4200 enable = 0; 4201 disable = 0; 4202 4203 while ((cmd = next_cmd(&buf))) { 4204 if (strlencmp(cmd, "lcd_enable") == 0) { 4205 enable |= TP_ACPI_VIDEO_S_LCD; 4206 } else if (strlencmp(cmd, "lcd_disable") == 0) { 4207 disable |= TP_ACPI_VIDEO_S_LCD; 4208 } else if (strlencmp(cmd, "crt_enable") == 0) { 4209 enable |= TP_ACPI_VIDEO_S_CRT; 4210 } else if (strlencmp(cmd, "crt_disable") == 0) { 4211 disable |= TP_ACPI_VIDEO_S_CRT; 4212 } else if (video_supported == TPACPI_VIDEO_NEW && 4213 strlencmp(cmd, "dvi_enable") == 0) { 4214 enable |= TP_ACPI_VIDEO_S_DVI; 4215 } else if (video_supported == TPACPI_VIDEO_NEW && 4216 strlencmp(cmd, "dvi_disable") == 0) { 4217 disable |= TP_ACPI_VIDEO_S_DVI; 4218 } else if (strlencmp(cmd, "auto_enable") == 0) { 4219 res = video_autosw_set(1); 4220 if (res) 4221 return res; 4222 } else if (strlencmp(cmd, "auto_disable") == 0) { 4223 res = video_autosw_set(0); 4224 if (res) 4225 return res; 4226 } else if (strlencmp(cmd, "video_switch") == 0) { 4227 res = video_outputsw_cycle(); 4228 if (res) 4229 return res; 4230 } else if (strlencmp(cmd, "expand_toggle") == 0) { 4231 res = video_expand_toggle(); 4232 if (res) 4233 return res; 4234 } else 4235 return -EINVAL; 4236 } 4237 4238 if (enable || disable) { 4239 status = video_outputsw_get(); 4240 if (status < 0) 4241 return status; 4242 res = video_outputsw_set((status & ~disable) | enable); 4243 if (res) 4244 return res; 4245 } 4246 4247 return 0; 4248 } 4249 4250 static struct ibm_struct video_driver_data = { 4251 .name = "video", 4252 .read = video_read, 4253 .write = video_write, 4254 .exit = video_exit, 4255 }; 4256 4257 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 4258 4259 /************************************************************************* 4260 * Light (thinklight) subdriver 4261 */ 4262 4263 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 4264 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 4265 4266 static int light_get_status(void) 4267 { 4268 int status = 0; 4269 4270 if (tp_features.light_status) { 4271 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 4272 return -EIO; 4273 return (!!status); 4274 } 4275 4276 return -ENXIO; 4277 } 4278 4279 static int light_set_status(int status) 4280 { 4281 int rc; 4282 4283 if (tp_features.light) { 4284 if (cmos_handle) { 4285 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 4286 (status)? 4287 TP_CMOS_THINKLIGHT_ON : 4288 TP_CMOS_THINKLIGHT_OFF); 4289 } else { 4290 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 4291 (status)? 1 : 0); 4292 } 4293 return (rc)? 0 : -EIO; 4294 } 4295 4296 return -ENXIO; 4297 } 4298 4299 static void light_set_status_worker(struct work_struct *work) 4300 { 4301 struct tpacpi_led_classdev *data = 4302 container_of(work, struct tpacpi_led_classdev, work); 4303 4304 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) 4305 light_set_status((data->new_state != TPACPI_LED_OFF)); 4306 } 4307 4308 static void light_sysfs_set(struct led_classdev *led_cdev, 4309 enum led_brightness brightness) 4310 { 4311 struct tpacpi_led_classdev *data = 4312 container_of(led_cdev, 4313 struct tpacpi_led_classdev, 4314 led_classdev); 4315 data->new_state = (brightness != LED_OFF) ? 4316 TPACPI_LED_ON : TPACPI_LED_OFF; 4317 queue_work(tpacpi_wq, &data->work); 4318 } 4319 4320 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 4321 { 4322 return (light_get_status() == 1)? LED_FULL : LED_OFF; 4323 } 4324 4325 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 4326 .led_classdev = { 4327 .name = "tpacpi::thinklight", 4328 .brightness_set = &light_sysfs_set, 4329 .brightness_get = &light_sysfs_get, 4330 } 4331 }; 4332 4333 static int __init light_init(struct ibm_init_struct *iibm) 4334 { 4335 int rc; 4336 4337 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 4338 4339 TPACPI_ACPIHANDLE_INIT(ledb); 4340 TPACPI_ACPIHANDLE_INIT(lght); 4341 TPACPI_ACPIHANDLE_INIT(cmos); 4342 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); 4343 4344 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 4345 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 4346 4347 if (tp_features.light) 4348 /* light status not supported on 4349 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 4350 tp_features.light_status = 4351 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 4352 4353 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 4354 str_supported(tp_features.light), 4355 str_supported(tp_features.light_status)); 4356 4357 if (!tp_features.light) 4358 return 1; 4359 4360 rc = led_classdev_register(&tpacpi_pdev->dev, 4361 &tpacpi_led_thinklight.led_classdev); 4362 4363 if (rc < 0) { 4364 tp_features.light = 0; 4365 tp_features.light_status = 0; 4366 } else { 4367 rc = 0; 4368 } 4369 4370 return rc; 4371 } 4372 4373 static void light_exit(void) 4374 { 4375 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 4376 if (work_pending(&tpacpi_led_thinklight.work)) 4377 flush_workqueue(tpacpi_wq); 4378 } 4379 4380 static int light_read(char *p) 4381 { 4382 int len = 0; 4383 int status; 4384 4385 if (!tp_features.light) { 4386 len += sprintf(p + len, "status:\t\tnot supported\n"); 4387 } else if (!tp_features.light_status) { 4388 len += sprintf(p + len, "status:\t\tunknown\n"); 4389 len += sprintf(p + len, "commands:\ton, off\n"); 4390 } else { 4391 status = light_get_status(); 4392 if (status < 0) 4393 return status; 4394 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); 4395 len += sprintf(p + len, "commands:\ton, off\n"); 4396 } 4397 4398 return len; 4399 } 4400 4401 static int light_write(char *buf) 4402 { 4403 char *cmd; 4404 int newstatus = 0; 4405 4406 if (!tp_features.light) 4407 return -ENODEV; 4408 4409 while ((cmd = next_cmd(&buf))) { 4410 if (strlencmp(cmd, "on") == 0) { 4411 newstatus = 1; 4412 } else if (strlencmp(cmd, "off") == 0) { 4413 newstatus = 0; 4414 } else 4415 return -EINVAL; 4416 } 4417 4418 return light_set_status(newstatus); 4419 } 4420 4421 static struct ibm_struct light_driver_data = { 4422 .name = "light", 4423 .read = light_read, 4424 .write = light_write, 4425 .exit = light_exit, 4426 }; 4427 4428 /************************************************************************* 4429 * CMOS subdriver 4430 */ 4431 4432 /* sysfs cmos_command -------------------------------------------------- */ 4433 static ssize_t cmos_command_store(struct device *dev, 4434 struct device_attribute *attr, 4435 const char *buf, size_t count) 4436 { 4437 unsigned long cmos_cmd; 4438 int res; 4439 4440 if (parse_strtoul(buf, 21, &cmos_cmd)) 4441 return -EINVAL; 4442 4443 res = issue_thinkpad_cmos_command(cmos_cmd); 4444 return (res)? res : count; 4445 } 4446 4447 static struct device_attribute dev_attr_cmos_command = 4448 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); 4449 4450 /* --------------------------------------------------------------------- */ 4451 4452 static int __init cmos_init(struct ibm_init_struct *iibm) 4453 { 4454 int res; 4455 4456 vdbg_printk(TPACPI_DBG_INIT, 4457 "initializing cmos commands subdriver\n"); 4458 4459 TPACPI_ACPIHANDLE_INIT(cmos); 4460 4461 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 4462 str_supported(cmos_handle != NULL)); 4463 4464 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 4465 if (res) 4466 return res; 4467 4468 return (cmos_handle)? 0 : 1; 4469 } 4470 4471 static void cmos_exit(void) 4472 { 4473 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 4474 } 4475 4476 static int cmos_read(char *p) 4477 { 4478 int len = 0; 4479 4480 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4481 R30, R31, T20-22, X20-21 */ 4482 if (!cmos_handle) 4483 len += sprintf(p + len, "status:\t\tnot supported\n"); 4484 else { 4485 len += sprintf(p + len, "status:\t\tsupported\n"); 4486 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); 4487 } 4488 4489 return len; 4490 } 4491 4492 static int cmos_write(char *buf) 4493 { 4494 char *cmd; 4495 int cmos_cmd, res; 4496 4497 while ((cmd = next_cmd(&buf))) { 4498 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 4499 cmos_cmd >= 0 && cmos_cmd <= 21) { 4500 /* cmos_cmd set */ 4501 } else 4502 return -EINVAL; 4503 4504 res = issue_thinkpad_cmos_command(cmos_cmd); 4505 if (res) 4506 return res; 4507 } 4508 4509 return 0; 4510 } 4511 4512 static struct ibm_struct cmos_driver_data = { 4513 .name = "cmos", 4514 .read = cmos_read, 4515 .write = cmos_write, 4516 .exit = cmos_exit, 4517 }; 4518 4519 /************************************************************************* 4520 * LED subdriver 4521 */ 4522 4523 enum led_access_mode { 4524 TPACPI_LED_NONE = 0, 4525 TPACPI_LED_570, /* 570 */ 4526 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 4527 TPACPI_LED_NEW, /* all others */ 4528 }; 4529 4530 enum { /* For TPACPI_LED_OLD */ 4531 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 4532 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 4533 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 4534 }; 4535 4536 static enum led_access_mode led_supported; 4537 4538 TPACPI_HANDLE(led, ec, "SLED", /* 570 */ 4539 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ 4540 /* T20-22, X20-21 */ 4541 "LED", /* all others */ 4542 ); /* R30, R31 */ 4543 4544 #define TPACPI_LED_NUMLEDS 16 4545 static struct tpacpi_led_classdev *tpacpi_leds; 4546 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 4547 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 4548 /* there's a limit of 19 chars + NULL before 2.6.26 */ 4549 "tpacpi::power", 4550 "tpacpi:orange:batt", 4551 "tpacpi:green:batt", 4552 "tpacpi::dock_active", 4553 "tpacpi::bay_active", 4554 "tpacpi::dock_batt", 4555 "tpacpi::unknown_led", 4556 "tpacpi::standby", 4557 "tpacpi::dock_status1", 4558 "tpacpi::dock_status2", 4559 "tpacpi::unknown_led2", 4560 "tpacpi::unknown_led3", 4561 "tpacpi::thinkvantage", 4562 }; 4563 #define TPACPI_SAFE_LEDS 0x1081U 4564 4565 static inline bool tpacpi_is_led_restricted(const unsigned int led) 4566 { 4567 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 4568 return false; 4569 #else 4570 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 4571 #endif 4572 } 4573 4574 static int led_get_status(const unsigned int led) 4575 { 4576 int status; 4577 enum led_status_t led_s; 4578 4579 switch (led_supported) { 4580 case TPACPI_LED_570: 4581 if (!acpi_evalf(ec_handle, 4582 &status, "GLED", "dd", 1 << led)) 4583 return -EIO; 4584 led_s = (status == 0)? 4585 TPACPI_LED_OFF : 4586 ((status == 1)? 4587 TPACPI_LED_ON : 4588 TPACPI_LED_BLINK); 4589 tpacpi_led_state_cache[led] = led_s; 4590 return led_s; 4591 default: 4592 return -ENXIO; 4593 } 4594 4595 /* not reached */ 4596 } 4597 4598 static int led_set_status(const unsigned int led, 4599 const enum led_status_t ledstatus) 4600 { 4601 /* off, on, blink. Index is led_status_t */ 4602 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 4603 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 4604 4605 int rc = 0; 4606 4607 switch (led_supported) { 4608 case TPACPI_LED_570: 4609 /* 570 */ 4610 if (unlikely(led > 7)) 4611 return -EINVAL; 4612 if (unlikely(tpacpi_is_led_restricted(led))) 4613 return -EPERM; 4614 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 4615 (1 << led), led_sled_arg1[ledstatus])) 4616 rc = -EIO; 4617 break; 4618 case TPACPI_LED_OLD: 4619 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 4620 if (unlikely(led > 7)) 4621 return -EINVAL; 4622 if (unlikely(tpacpi_is_led_restricted(led))) 4623 return -EPERM; 4624 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 4625 if (rc >= 0) 4626 rc = ec_write(TPACPI_LED_EC_HLBL, 4627 (ledstatus == TPACPI_LED_BLINK) << led); 4628 if (rc >= 0) 4629 rc = ec_write(TPACPI_LED_EC_HLCL, 4630 (ledstatus != TPACPI_LED_OFF) << led); 4631 break; 4632 case TPACPI_LED_NEW: 4633 /* all others */ 4634 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 4635 return -EINVAL; 4636 if (unlikely(tpacpi_is_led_restricted(led))) 4637 return -EPERM; 4638 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 4639 led, led_led_arg1[ledstatus])) 4640 rc = -EIO; 4641 break; 4642 default: 4643 rc = -ENXIO; 4644 } 4645 4646 if (!rc) 4647 tpacpi_led_state_cache[led] = ledstatus; 4648 4649 return rc; 4650 } 4651 4652 static void led_set_status_worker(struct work_struct *work) 4653 { 4654 struct tpacpi_led_classdev *data = 4655 container_of(work, struct tpacpi_led_classdev, work); 4656 4657 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) 4658 led_set_status(data->led, data->new_state); 4659 } 4660 4661 static void led_sysfs_set(struct led_classdev *led_cdev, 4662 enum led_brightness brightness) 4663 { 4664 struct tpacpi_led_classdev *data = container_of(led_cdev, 4665 struct tpacpi_led_classdev, led_classdev); 4666 4667 if (brightness == LED_OFF) 4668 data->new_state = TPACPI_LED_OFF; 4669 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 4670 data->new_state = TPACPI_LED_ON; 4671 else 4672 data->new_state = TPACPI_LED_BLINK; 4673 4674 queue_work(tpacpi_wq, &data->work); 4675 } 4676 4677 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 4678 unsigned long *delay_on, unsigned long *delay_off) 4679 { 4680 struct tpacpi_led_classdev *data = container_of(led_cdev, 4681 struct tpacpi_led_classdev, led_classdev); 4682 4683 /* Can we choose the flash rate? */ 4684 if (*delay_on == 0 && *delay_off == 0) { 4685 /* yes. set them to the hardware blink rate (1 Hz) */ 4686 *delay_on = 500; /* ms */ 4687 *delay_off = 500; /* ms */ 4688 } else if ((*delay_on != 500) || (*delay_off != 500)) 4689 return -EINVAL; 4690 4691 data->new_state = TPACPI_LED_BLINK; 4692 queue_work(tpacpi_wq, &data->work); 4693 4694 return 0; 4695 } 4696 4697 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 4698 { 4699 int rc; 4700 4701 struct tpacpi_led_classdev *data = container_of(led_cdev, 4702 struct tpacpi_led_classdev, led_classdev); 4703 4704 rc = led_get_status(data->led); 4705 4706 if (rc == TPACPI_LED_OFF || rc < 0) 4707 rc = LED_OFF; /* no error handling in led class :( */ 4708 else 4709 rc = LED_FULL; 4710 4711 return rc; 4712 } 4713 4714 static void led_exit(void) 4715 { 4716 unsigned int i; 4717 4718 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 4719 if (tpacpi_leds[i].led_classdev.name) 4720 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 4721 } 4722 4723 kfree(tpacpi_leds); 4724 } 4725 4726 static int __init tpacpi_init_led(unsigned int led) 4727 { 4728 int rc; 4729 4730 tpacpi_leds[led].led = led; 4731 4732 /* LEDs with no name don't get registered */ 4733 if (!tpacpi_led_names[led]) 4734 return 0; 4735 4736 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set; 4737 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 4738 if (led_supported == TPACPI_LED_570) 4739 tpacpi_leds[led].led_classdev.brightness_get = 4740 &led_sysfs_get; 4741 4742 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 4743 4744 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker); 4745 4746 rc = led_classdev_register(&tpacpi_pdev->dev, 4747 &tpacpi_leds[led].led_classdev); 4748 if (rc < 0) 4749 tpacpi_leds[led].led_classdev.name = NULL; 4750 4751 return rc; 4752 } 4753 4754 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 4755 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 4756 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 4757 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 4758 4759 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 4760 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 4761 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 4762 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 4763 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 4764 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 4765 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 4766 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 4767 4768 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 4769 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 4770 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 4771 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 4772 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 4773 4774 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 4775 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 4776 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 4777 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 4778 4779 /* (1) - may have excess leds enabled on MSB */ 4780 4781 /* Defaults (order matters, keep last, don't reorder!) */ 4782 { /* Lenovo */ 4783 .vendor = PCI_VENDOR_ID_LENOVO, 4784 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 4785 .quirks = 0x1fffU, 4786 }, 4787 { /* IBM ThinkPads with no EC version string */ 4788 .vendor = PCI_VENDOR_ID_IBM, 4789 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 4790 .quirks = 0x00ffU, 4791 }, 4792 { /* IBM ThinkPads with EC version string */ 4793 .vendor = PCI_VENDOR_ID_IBM, 4794 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 4795 .quirks = 0x00bfU, 4796 }, 4797 }; 4798 4799 #undef TPACPI_LEDQ_IBM 4800 #undef TPACPI_LEDQ_LNV 4801 4802 static int __init led_init(struct ibm_init_struct *iibm) 4803 { 4804 unsigned int i; 4805 int rc; 4806 unsigned long useful_leds; 4807 4808 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 4809 4810 TPACPI_ACPIHANDLE_INIT(led); 4811 4812 if (!led_handle) 4813 /* led not supported on R30, R31 */ 4814 led_supported = TPACPI_LED_NONE; 4815 else if (strlencmp(led_path, "SLED") == 0) 4816 /* 570 */ 4817 led_supported = TPACPI_LED_570; 4818 else if (strlencmp(led_path, "SYSL") == 0) 4819 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 4820 led_supported = TPACPI_LED_OLD; 4821 else 4822 /* all others */ 4823 led_supported = TPACPI_LED_NEW; 4824 4825 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 4826 str_supported(led_supported), led_supported); 4827 4828 if (led_supported == TPACPI_LED_NONE) 4829 return 1; 4830 4831 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, 4832 GFP_KERNEL); 4833 if (!tpacpi_leds) { 4834 printk(TPACPI_ERR "Out of memory for LED data\n"); 4835 return -ENOMEM; 4836 } 4837 4838 useful_leds = tpacpi_check_quirks(led_useful_qtable, 4839 ARRAY_SIZE(led_useful_qtable)); 4840 4841 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 4842 if (!tpacpi_is_led_restricted(i) && 4843 test_bit(i, &useful_leds)) { 4844 rc = tpacpi_init_led(i); 4845 if (rc < 0) { 4846 led_exit(); 4847 return rc; 4848 } 4849 } 4850 } 4851 4852 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 4853 printk(TPACPI_NOTICE 4854 "warning: userspace override of important " 4855 "firmware LEDs is enabled\n"); 4856 #endif 4857 return 0; 4858 } 4859 4860 #define str_led_status(s) \ 4861 ((s) == TPACPI_LED_OFF ? "off" : \ 4862 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 4863 4864 static int led_read(char *p) 4865 { 4866 int len = 0; 4867 4868 if (!led_supported) { 4869 len += sprintf(p + len, "status:\t\tnot supported\n"); 4870 return len; 4871 } 4872 len += sprintf(p + len, "status:\t\tsupported\n"); 4873 4874 if (led_supported == TPACPI_LED_570) { 4875 /* 570 */ 4876 int i, status; 4877 for (i = 0; i < 8; i++) { 4878 status = led_get_status(i); 4879 if (status < 0) 4880 return -EIO; 4881 len += sprintf(p + len, "%d:\t\t%s\n", 4882 i, str_led_status(status)); 4883 } 4884 } 4885 4886 len += sprintf(p + len, "commands:\t" 4887 "<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 4888 4889 return len; 4890 } 4891 4892 static int led_write(char *buf) 4893 { 4894 char *cmd; 4895 int led, rc; 4896 enum led_status_t s; 4897 4898 if (!led_supported) 4899 return -ENODEV; 4900 4901 while ((cmd = next_cmd(&buf))) { 4902 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15) 4903 return -EINVAL; 4904 4905 if (strstr(cmd, "off")) { 4906 s = TPACPI_LED_OFF; 4907 } else if (strstr(cmd, "on")) { 4908 s = TPACPI_LED_ON; 4909 } else if (strstr(cmd, "blink")) { 4910 s = TPACPI_LED_BLINK; 4911 } else { 4912 return -EINVAL; 4913 } 4914 4915 rc = led_set_status(led, s); 4916 if (rc < 0) 4917 return rc; 4918 } 4919 4920 return 0; 4921 } 4922 4923 static struct ibm_struct led_driver_data = { 4924 .name = "led", 4925 .read = led_read, 4926 .write = led_write, 4927 .exit = led_exit, 4928 }; 4929 4930 /************************************************************************* 4931 * Beep subdriver 4932 */ 4933 4934 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 4935 4936 #define TPACPI_BEEP_Q1 0x0001 4937 4938 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 4939 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 4940 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 4941 }; 4942 4943 static int __init beep_init(struct ibm_init_struct *iibm) 4944 { 4945 unsigned long quirks; 4946 4947 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 4948 4949 TPACPI_ACPIHANDLE_INIT(beep); 4950 4951 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 4952 str_supported(beep_handle != NULL)); 4953 4954 quirks = tpacpi_check_quirks(beep_quirk_table, 4955 ARRAY_SIZE(beep_quirk_table)); 4956 4957 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 4958 4959 return (beep_handle)? 0 : 1; 4960 } 4961 4962 static int beep_read(char *p) 4963 { 4964 int len = 0; 4965 4966 if (!beep_handle) 4967 len += sprintf(p + len, "status:\t\tnot supported\n"); 4968 else { 4969 len += sprintf(p + len, "status:\t\tsupported\n"); 4970 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); 4971 } 4972 4973 return len; 4974 } 4975 4976 static int beep_write(char *buf) 4977 { 4978 char *cmd; 4979 int beep_cmd; 4980 4981 if (!beep_handle) 4982 return -ENODEV; 4983 4984 while ((cmd = next_cmd(&buf))) { 4985 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 4986 beep_cmd >= 0 && beep_cmd <= 17) { 4987 /* beep_cmd set */ 4988 } else 4989 return -EINVAL; 4990 if (tp_features.beep_needs_two_args) { 4991 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 4992 beep_cmd, 0)) 4993 return -EIO; 4994 } else { 4995 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 4996 beep_cmd)) 4997 return -EIO; 4998 } 4999 } 5000 5001 return 0; 5002 } 5003 5004 static struct ibm_struct beep_driver_data = { 5005 .name = "beep", 5006 .read = beep_read, 5007 .write = beep_write, 5008 }; 5009 5010 /************************************************************************* 5011 * Thermal subdriver 5012 */ 5013 5014 enum thermal_access_mode { 5015 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 5016 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 5017 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 5018 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 5019 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 5020 }; 5021 5022 enum { /* TPACPI_THERMAL_TPEC_* */ 5023 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 5024 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 5025 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 5026 }; 5027 5028 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 5029 struct ibm_thermal_sensors_struct { 5030 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 5031 }; 5032 5033 static enum thermal_access_mode thermal_read_mode; 5034 5035 /* idx is zero-based */ 5036 static int thermal_get_sensor(int idx, s32 *value) 5037 { 5038 int t; 5039 s8 tmp; 5040 char tmpi[5]; 5041 5042 t = TP_EC_THERMAL_TMP0; 5043 5044 switch (thermal_read_mode) { 5045 #if TPACPI_MAX_THERMAL_SENSORS >= 16 5046 case TPACPI_THERMAL_TPEC_16: 5047 if (idx >= 8 && idx <= 15) { 5048 t = TP_EC_THERMAL_TMP8; 5049 idx -= 8; 5050 } 5051 /* fallthrough */ 5052 #endif 5053 case TPACPI_THERMAL_TPEC_8: 5054 if (idx <= 7) { 5055 if (!acpi_ec_read(t + idx, &tmp)) 5056 return -EIO; 5057 *value = tmp * 1000; 5058 return 0; 5059 } 5060 break; 5061 5062 case TPACPI_THERMAL_ACPI_UPDT: 5063 if (idx <= 7) { 5064 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 5065 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 5066 return -EIO; 5067 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 5068 return -EIO; 5069 *value = (t - 2732) * 100; 5070 return 0; 5071 } 5072 break; 5073 5074 case TPACPI_THERMAL_ACPI_TMP07: 5075 if (idx <= 7) { 5076 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 5077 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 5078 return -EIO; 5079 if (t > 127 || t < -127) 5080 t = TP_EC_THERMAL_TMP_NA; 5081 *value = t * 1000; 5082 return 0; 5083 } 5084 break; 5085 5086 case TPACPI_THERMAL_NONE: 5087 default: 5088 return -ENOSYS; 5089 } 5090 5091 return -EINVAL; 5092 } 5093 5094 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 5095 { 5096 int res, i; 5097 int n; 5098 5099 n = 8; 5100 i = 0; 5101 5102 if (!s) 5103 return -EINVAL; 5104 5105 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 5106 n = 16; 5107 5108 for (i = 0 ; i < n; i++) { 5109 res = thermal_get_sensor(i, &s->temp[i]); 5110 if (res) 5111 return res; 5112 } 5113 5114 return n; 5115 } 5116 5117 /* sysfs temp##_input -------------------------------------------------- */ 5118 5119 static ssize_t thermal_temp_input_show(struct device *dev, 5120 struct device_attribute *attr, 5121 char *buf) 5122 { 5123 struct sensor_device_attribute *sensor_attr = 5124 to_sensor_dev_attr(attr); 5125 int idx = sensor_attr->index; 5126 s32 value; 5127 int res; 5128 5129 res = thermal_get_sensor(idx, &value); 5130 if (res) 5131 return res; 5132 if (value == TP_EC_THERMAL_TMP_NA * 1000) 5133 return -ENXIO; 5134 5135 return snprintf(buf, PAGE_SIZE, "%d\n", value); 5136 } 5137 5138 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 5139 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 5140 thermal_temp_input_show, NULL, _idxB) 5141 5142 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 5143 THERMAL_SENSOR_ATTR_TEMP(1, 0), 5144 THERMAL_SENSOR_ATTR_TEMP(2, 1), 5145 THERMAL_SENSOR_ATTR_TEMP(3, 2), 5146 THERMAL_SENSOR_ATTR_TEMP(4, 3), 5147 THERMAL_SENSOR_ATTR_TEMP(5, 4), 5148 THERMAL_SENSOR_ATTR_TEMP(6, 5), 5149 THERMAL_SENSOR_ATTR_TEMP(7, 6), 5150 THERMAL_SENSOR_ATTR_TEMP(8, 7), 5151 THERMAL_SENSOR_ATTR_TEMP(9, 8), 5152 THERMAL_SENSOR_ATTR_TEMP(10, 9), 5153 THERMAL_SENSOR_ATTR_TEMP(11, 10), 5154 THERMAL_SENSOR_ATTR_TEMP(12, 11), 5155 THERMAL_SENSOR_ATTR_TEMP(13, 12), 5156 THERMAL_SENSOR_ATTR_TEMP(14, 13), 5157 THERMAL_SENSOR_ATTR_TEMP(15, 14), 5158 THERMAL_SENSOR_ATTR_TEMP(16, 15), 5159 }; 5160 5161 #define THERMAL_ATTRS(X) \ 5162 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 5163 5164 static struct attribute *thermal_temp_input_attr[] = { 5165 THERMAL_ATTRS(8), 5166 THERMAL_ATTRS(9), 5167 THERMAL_ATTRS(10), 5168 THERMAL_ATTRS(11), 5169 THERMAL_ATTRS(12), 5170 THERMAL_ATTRS(13), 5171 THERMAL_ATTRS(14), 5172 THERMAL_ATTRS(15), 5173 THERMAL_ATTRS(0), 5174 THERMAL_ATTRS(1), 5175 THERMAL_ATTRS(2), 5176 THERMAL_ATTRS(3), 5177 THERMAL_ATTRS(4), 5178 THERMAL_ATTRS(5), 5179 THERMAL_ATTRS(6), 5180 THERMAL_ATTRS(7), 5181 NULL 5182 }; 5183 5184 static const struct attribute_group thermal_temp_input16_group = { 5185 .attrs = thermal_temp_input_attr 5186 }; 5187 5188 static const struct attribute_group thermal_temp_input8_group = { 5189 .attrs = &thermal_temp_input_attr[8] 5190 }; 5191 5192 #undef THERMAL_SENSOR_ATTR_TEMP 5193 #undef THERMAL_ATTRS 5194 5195 /* --------------------------------------------------------------------- */ 5196 5197 static int __init thermal_init(struct ibm_init_struct *iibm) 5198 { 5199 u8 t, ta1, ta2; 5200 int i; 5201 int acpi_tmp7; 5202 int res; 5203 5204 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 5205 5206 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 5207 5208 if (thinkpad_id.ec_model) { 5209 /* 5210 * Direct EC access mode: sensors at registers 5211 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 5212 * non-implemented, thermal sensors return 0x80 when 5213 * not available 5214 */ 5215 5216 ta1 = ta2 = 0; 5217 for (i = 0; i < 8; i++) { 5218 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 5219 ta1 |= t; 5220 } else { 5221 ta1 = 0; 5222 break; 5223 } 5224 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 5225 ta2 |= t; 5226 } else { 5227 ta1 = 0; 5228 break; 5229 } 5230 } 5231 if (ta1 == 0) { 5232 /* This is sheer paranoia, but we handle it anyway */ 5233 if (acpi_tmp7) { 5234 printk(TPACPI_ERR 5235 "ThinkPad ACPI EC access misbehaving, " 5236 "falling back to ACPI TMPx access " 5237 "mode\n"); 5238 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 5239 } else { 5240 printk(TPACPI_ERR 5241 "ThinkPad ACPI EC access misbehaving, " 5242 "disabling thermal sensors access\n"); 5243 thermal_read_mode = TPACPI_THERMAL_NONE; 5244 } 5245 } else { 5246 thermal_read_mode = 5247 (ta2 != 0) ? 5248 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 5249 } 5250 } else if (acpi_tmp7) { 5251 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 5252 /* 600e/x, 770e, 770x */ 5253 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 5254 } else { 5255 /* Standard ACPI TMPx access, max 8 sensors */ 5256 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 5257 } 5258 } else { 5259 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 5260 thermal_read_mode = TPACPI_THERMAL_NONE; 5261 } 5262 5263 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 5264 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 5265 thermal_read_mode); 5266 5267 switch (thermal_read_mode) { 5268 case TPACPI_THERMAL_TPEC_16: 5269 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 5270 &thermal_temp_input16_group); 5271 if (res) 5272 return res; 5273 break; 5274 case TPACPI_THERMAL_TPEC_8: 5275 case TPACPI_THERMAL_ACPI_TMP07: 5276 case TPACPI_THERMAL_ACPI_UPDT: 5277 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 5278 &thermal_temp_input8_group); 5279 if (res) 5280 return res; 5281 break; 5282 case TPACPI_THERMAL_NONE: 5283 default: 5284 return 1; 5285 } 5286 5287 return 0; 5288 } 5289 5290 static void thermal_exit(void) 5291 { 5292 switch (thermal_read_mode) { 5293 case TPACPI_THERMAL_TPEC_16: 5294 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 5295 &thermal_temp_input16_group); 5296 break; 5297 case TPACPI_THERMAL_TPEC_8: 5298 case TPACPI_THERMAL_ACPI_TMP07: 5299 case TPACPI_THERMAL_ACPI_UPDT: 5300 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 5301 &thermal_temp_input16_group); 5302 break; 5303 case TPACPI_THERMAL_NONE: 5304 default: 5305 break; 5306 } 5307 } 5308 5309 static int thermal_read(char *p) 5310 { 5311 int len = 0; 5312 int n, i; 5313 struct ibm_thermal_sensors_struct t; 5314 5315 n = thermal_get_sensors(&t); 5316 if (unlikely(n < 0)) 5317 return n; 5318 5319 len += sprintf(p + len, "temperatures:\t"); 5320 5321 if (n > 0) { 5322 for (i = 0; i < (n - 1); i++) 5323 len += sprintf(p + len, "%d ", t.temp[i] / 1000); 5324 len += sprintf(p + len, "%d\n", t.temp[i] / 1000); 5325 } else 5326 len += sprintf(p + len, "not supported\n"); 5327 5328 return len; 5329 } 5330 5331 static struct ibm_struct thermal_driver_data = { 5332 .name = "thermal", 5333 .read = thermal_read, 5334 .exit = thermal_exit, 5335 }; 5336 5337 /************************************************************************* 5338 * EC Dump subdriver 5339 */ 5340 5341 static u8 ecdump_regs[256]; 5342 5343 static int ecdump_read(char *p) 5344 { 5345 int len = 0; 5346 int i, j; 5347 u8 v; 5348 5349 len += sprintf(p + len, "EC " 5350 " +00 +01 +02 +03 +04 +05 +06 +07" 5351 " +08 +09 +0a +0b +0c +0d +0e +0f\n"); 5352 for (i = 0; i < 256; i += 16) { 5353 len += sprintf(p + len, "EC 0x%02x:", i); 5354 for (j = 0; j < 16; j++) { 5355 if (!acpi_ec_read(i + j, &v)) 5356 break; 5357 if (v != ecdump_regs[i + j]) 5358 len += sprintf(p + len, " *%02x", v); 5359 else 5360 len += sprintf(p + len, " %02x", v); 5361 ecdump_regs[i + j] = v; 5362 } 5363 len += sprintf(p + len, "\n"); 5364 if (j != 16) 5365 break; 5366 } 5367 5368 /* These are way too dangerous to advertise openly... */ 5369 #if 0 5370 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" 5371 " (<offset> is 00-ff, <value> is 00-ff)\n"); 5372 len += sprintf(p + len, "commands:\t0x<offset> <value> " 5373 " (<offset> is 00-ff, <value> is 0-255)\n"); 5374 #endif 5375 return len; 5376 } 5377 5378 static int ecdump_write(char *buf) 5379 { 5380 char *cmd; 5381 int i, v; 5382 5383 while ((cmd = next_cmd(&buf))) { 5384 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { 5385 /* i and v set */ 5386 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { 5387 /* i and v set */ 5388 } else 5389 return -EINVAL; 5390 if (i >= 0 && i < 256 && v >= 0 && v < 256) { 5391 if (!acpi_ec_write(i, v)) 5392 return -EIO; 5393 } else 5394 return -EINVAL; 5395 } 5396 5397 return 0; 5398 } 5399 5400 static struct ibm_struct ecdump_driver_data = { 5401 .name = "ecdump", 5402 .read = ecdump_read, 5403 .write = ecdump_write, 5404 .flags.experimental = 1, 5405 }; 5406 5407 /************************************************************************* 5408 * Backlight/brightness subdriver 5409 */ 5410 5411 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 5412 5413 /* 5414 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 5415 * CMOS NVRAM byte 0x5E, bits 0-3. 5416 * 5417 * EC HBRV (0x31) has the following layout 5418 * Bit 7: unknown function 5419 * Bit 6: unknown function 5420 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 5421 * Bit 4: must be set to zero to avoid problems 5422 * Bit 3-0: backlight brightness level 5423 * 5424 * brightness_get_raw returns status data in the HBRV layout 5425 * 5426 * WARNING: The X61 has been verified to use HBRV for something else, so 5427 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 5428 * testing on the very early *60 Lenovo models... 5429 */ 5430 5431 enum { 5432 TP_EC_BACKLIGHT = 0x31, 5433 5434 /* TP_EC_BACKLIGHT bitmasks */ 5435 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 5436 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 5437 TP_EC_BACKLIGHT_MAPSW = 0x20, 5438 }; 5439 5440 enum tpacpi_brightness_access_mode { 5441 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 5442 TPACPI_BRGHT_MODE_EC, /* EC control */ 5443 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 5444 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 5445 TPACPI_BRGHT_MODE_MAX 5446 }; 5447 5448 static struct backlight_device *ibm_backlight_device; 5449 5450 static enum tpacpi_brightness_access_mode brightness_mode = 5451 TPACPI_BRGHT_MODE_MAX; 5452 5453 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 5454 5455 static struct mutex brightness_mutex; 5456 5457 /* NVRAM brightness access, 5458 * call with brightness_mutex held! */ 5459 static unsigned int tpacpi_brightness_nvram_get(void) 5460 { 5461 u8 lnvram; 5462 5463 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 5464 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 5465 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 5466 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07; 5467 5468 return lnvram; 5469 } 5470 5471 static void tpacpi_brightness_checkpoint_nvram(void) 5472 { 5473 u8 lec = 0; 5474 u8 b_nvram; 5475 5476 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 5477 return; 5478 5479 vdbg_printk(TPACPI_DBG_BRGHT, 5480 "trying to checkpoint backlight level to NVRAM...\n"); 5481 5482 if (mutex_lock_killable(&brightness_mutex) < 0) 5483 return; 5484 5485 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 5486 goto unlock; 5487 lec &= TP_EC_BACKLIGHT_LVLMSK; 5488 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 5489 5490 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 5491 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 5492 /* NVRAM needs update */ 5493 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 5494 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 5495 b_nvram |= lec; 5496 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 5497 dbg_printk(TPACPI_DBG_BRGHT, 5498 "updated NVRAM backlight level to %u (0x%02x)\n", 5499 (unsigned int) lec, (unsigned int) b_nvram); 5500 } else 5501 vdbg_printk(TPACPI_DBG_BRGHT, 5502 "NVRAM backlight level already is %u (0x%02x)\n", 5503 (unsigned int) lec, (unsigned int) b_nvram); 5504 5505 unlock: 5506 mutex_unlock(&brightness_mutex); 5507 } 5508 5509 5510 /* call with brightness_mutex held! */ 5511 static int tpacpi_brightness_get_raw(int *status) 5512 { 5513 u8 lec = 0; 5514 5515 switch (brightness_mode) { 5516 case TPACPI_BRGHT_MODE_UCMS_STEP: 5517 *status = tpacpi_brightness_nvram_get(); 5518 return 0; 5519 case TPACPI_BRGHT_MODE_EC: 5520 case TPACPI_BRGHT_MODE_ECNVRAM: 5521 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 5522 return -EIO; 5523 *status = lec; 5524 return 0; 5525 default: 5526 return -ENXIO; 5527 } 5528 } 5529 5530 /* call with brightness_mutex held! */ 5531 /* do NOT call with illegal backlight level value */ 5532 static int tpacpi_brightness_set_ec(unsigned int value) 5533 { 5534 u8 lec = 0; 5535 5536 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 5537 return -EIO; 5538 5539 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 5540 (lec & TP_EC_BACKLIGHT_CMDMSK) | 5541 (value & TP_EC_BACKLIGHT_LVLMSK)))) 5542 return -EIO; 5543 5544 return 0; 5545 } 5546 5547 /* call with brightness_mutex held! */ 5548 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 5549 { 5550 int cmos_cmd, inc; 5551 unsigned int current_value, i; 5552 5553 current_value = tpacpi_brightness_nvram_get(); 5554 5555 if (value == current_value) 5556 return 0; 5557 5558 cmos_cmd = (value > current_value) ? 5559 TP_CMOS_BRIGHTNESS_UP : 5560 TP_CMOS_BRIGHTNESS_DOWN; 5561 inc = (value > current_value) ? 1 : -1; 5562 5563 for (i = current_value; i != value; i += inc) 5564 if (issue_thinkpad_cmos_command(cmos_cmd)) 5565 return -EIO; 5566 5567 return 0; 5568 } 5569 5570 /* May return EINTR which can always be mapped to ERESTARTSYS */ 5571 static int brightness_set(unsigned int value) 5572 { 5573 int res; 5574 5575 if (value > ((tp_features.bright_16levels)? 15 : 7) || 5576 value < 0) 5577 return -EINVAL; 5578 5579 vdbg_printk(TPACPI_DBG_BRGHT, 5580 "set backlight level to %d\n", value); 5581 5582 res = mutex_lock_killable(&brightness_mutex); 5583 if (res < 0) 5584 return res; 5585 5586 switch (brightness_mode) { 5587 case TPACPI_BRGHT_MODE_EC: 5588 case TPACPI_BRGHT_MODE_ECNVRAM: 5589 res = tpacpi_brightness_set_ec(value); 5590 break; 5591 case TPACPI_BRGHT_MODE_UCMS_STEP: 5592 res = tpacpi_brightness_set_ucmsstep(value); 5593 break; 5594 default: 5595 res = -ENXIO; 5596 } 5597 5598 mutex_unlock(&brightness_mutex); 5599 return res; 5600 } 5601 5602 /* sysfs backlight class ----------------------------------------------- */ 5603 5604 static int brightness_update_status(struct backlight_device *bd) 5605 { 5606 unsigned int level = 5607 (bd->props.fb_blank == FB_BLANK_UNBLANK && 5608 bd->props.power == FB_BLANK_UNBLANK) ? 5609 bd->props.brightness : 0; 5610 5611 dbg_printk(TPACPI_DBG_BRGHT, 5612 "backlight: attempt to set level to %d\n", 5613 level); 5614 5615 /* it is the backlight class's job (caller) to handle 5616 * EINTR and other errors properly */ 5617 return brightness_set(level); 5618 } 5619 5620 static int brightness_get(struct backlight_device *bd) 5621 { 5622 int status, res; 5623 5624 res = mutex_lock_killable(&brightness_mutex); 5625 if (res < 0) 5626 return 0; 5627 5628 res = tpacpi_brightness_get_raw(&status); 5629 5630 mutex_unlock(&brightness_mutex); 5631 5632 if (res < 0) 5633 return 0; 5634 5635 return status & TP_EC_BACKLIGHT_LVLMSK; 5636 } 5637 5638 static struct backlight_ops ibm_backlight_data = { 5639 .get_brightness = brightness_get, 5640 .update_status = brightness_update_status, 5641 }; 5642 5643 /* --------------------------------------------------------------------- */ 5644 5645 /* 5646 * These are only useful for models that have only one possibility 5647 * of GPU. If the BIOS model handles both ATI and Intel, don't use 5648 * these quirks. 5649 */ 5650 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 5651 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 5652 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 5653 5654 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 5655 /* Models with ATI GPUs known to require ECNVRAM mode */ 5656 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 5657 5658 /* Models with ATI GPUs (waiting confirmation) */ 5659 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 5660 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 5661 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 5662 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 5663 5664 /* Models with Intel Extreme Graphics 2 (waiting confirmation) */ 5665 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC), 5666 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC), 5667 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC), 5668 5669 /* Models with Intel GMA900 */ 5670 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 5671 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 5672 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 5673 }; 5674 5675 static int __init brightness_init(struct ibm_init_struct *iibm) 5676 { 5677 int b; 5678 unsigned long quirks; 5679 5680 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 5681 5682 mutex_init(&brightness_mutex); 5683 5684 quirks = tpacpi_check_quirks(brightness_quirk_table, 5685 ARRAY_SIZE(brightness_quirk_table)); 5686 5687 /* 5688 * We always attempt to detect acpi support, so as to switch 5689 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 5690 * going to publish a backlight interface 5691 */ 5692 b = tpacpi_check_std_acpi_brightness_support(); 5693 if (b > 0) { 5694 5695 if (acpi_video_backlight_support()) { 5696 if (brightness_enable > 1) { 5697 printk(TPACPI_NOTICE 5698 "Standard ACPI backlight interface " 5699 "available, not loading native one.\n"); 5700 return 1; 5701 } else if (brightness_enable == 1) { 5702 printk(TPACPI_NOTICE 5703 "Backlight control force enabled, even if standard " 5704 "ACPI backlight interface is available\n"); 5705 } 5706 } else { 5707 if (brightness_enable > 1) { 5708 printk(TPACPI_NOTICE 5709 "Standard ACPI backlight interface not " 5710 "available, thinkpad_acpi native " 5711 "brightness control enabled\n"); 5712 } 5713 } 5714 } 5715 5716 if (!brightness_enable) { 5717 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 5718 "brightness support disabled by " 5719 "module parameter\n"); 5720 return 1; 5721 } 5722 5723 if (b > 16) { 5724 printk(TPACPI_ERR 5725 "Unsupported brightness interface, " 5726 "please contact %s\n", TPACPI_MAIL); 5727 return 1; 5728 } 5729 if (b == 16) 5730 tp_features.bright_16levels = 1; 5731 5732 /* 5733 * Check for module parameter bogosity, note that we 5734 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 5735 * able to detect "unspecified" 5736 */ 5737 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 5738 return -EINVAL; 5739 5740 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 5741 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 5742 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 5743 if (quirks & TPACPI_BRGHT_Q_EC) 5744 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 5745 else 5746 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 5747 5748 dbg_printk(TPACPI_DBG_BRGHT, 5749 "driver auto-selected brightness_mode=%d\n", 5750 brightness_mode); 5751 } 5752 5753 /* Safety */ 5754 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM && 5755 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 5756 brightness_mode == TPACPI_BRGHT_MODE_EC)) 5757 return -EINVAL; 5758 5759 if (tpacpi_brightness_get_raw(&b) < 0) 5760 return 1; 5761 5762 if (tp_features.bright_16levels) 5763 printk(TPACPI_INFO 5764 "detected a 16-level brightness capable ThinkPad\n"); 5765 5766 ibm_backlight_device = backlight_device_register( 5767 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, 5768 &ibm_backlight_data); 5769 if (IS_ERR(ibm_backlight_device)) { 5770 printk(TPACPI_ERR "Could not register backlight device\n"); 5771 return PTR_ERR(ibm_backlight_device); 5772 } 5773 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 5774 "brightness is supported\n"); 5775 5776 if (quirks & TPACPI_BRGHT_Q_ASK) { 5777 printk(TPACPI_NOTICE 5778 "brightness: will use unverified default: " 5779 "brightness_mode=%d\n", brightness_mode); 5780 printk(TPACPI_NOTICE 5781 "brightness: please report to %s whether it works well " 5782 "or not on your ThinkPad\n", TPACPI_MAIL); 5783 } 5784 5785 ibm_backlight_device->props.max_brightness = 5786 (tp_features.bright_16levels)? 15 : 7; 5787 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 5788 backlight_update_status(ibm_backlight_device); 5789 5790 return 0; 5791 } 5792 5793 static void brightness_suspend(pm_message_t state) 5794 { 5795 tpacpi_brightness_checkpoint_nvram(); 5796 } 5797 5798 static void brightness_shutdown(void) 5799 { 5800 tpacpi_brightness_checkpoint_nvram(); 5801 } 5802 5803 static void brightness_exit(void) 5804 { 5805 if (ibm_backlight_device) { 5806 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 5807 "calling backlight_device_unregister()\n"); 5808 backlight_device_unregister(ibm_backlight_device); 5809 } 5810 5811 tpacpi_brightness_checkpoint_nvram(); 5812 } 5813 5814 static int brightness_read(char *p) 5815 { 5816 int len = 0; 5817 int level; 5818 5819 level = brightness_get(NULL); 5820 if (level < 0) { 5821 len += sprintf(p + len, "level:\t\tunreadable\n"); 5822 } else { 5823 len += sprintf(p + len, "level:\t\t%d\n", level); 5824 len += sprintf(p + len, "commands:\tup, down\n"); 5825 len += sprintf(p + len, "commands:\tlevel <level>" 5826 " (<level> is 0-%d)\n", 5827 (tp_features.bright_16levels) ? 15 : 7); 5828 } 5829 5830 return len; 5831 } 5832 5833 static int brightness_write(char *buf) 5834 { 5835 int level; 5836 int rc; 5837 char *cmd; 5838 int max_level = (tp_features.bright_16levels) ? 15 : 7; 5839 5840 level = brightness_get(NULL); 5841 if (level < 0) 5842 return level; 5843 5844 while ((cmd = next_cmd(&buf))) { 5845 if (strlencmp(cmd, "up") == 0) { 5846 if (level < max_level) 5847 level++; 5848 } else if (strlencmp(cmd, "down") == 0) { 5849 if (level > 0) 5850 level--; 5851 } else if (sscanf(cmd, "level %d", &level) == 1 && 5852 level >= 0 && level <= max_level) { 5853 /* new level set */ 5854 } else 5855 return -EINVAL; 5856 } 5857 5858 tpacpi_disclose_usertask("procfs brightness", 5859 "set level to %d\n", level); 5860 5861 /* 5862 * Now we know what the final level should be, so we try to set it. 5863 * Doing it this way makes the syscall restartable in case of EINTR 5864 */ 5865 rc = brightness_set(level); 5866 return (rc == -EINTR)? ERESTARTSYS : rc; 5867 } 5868 5869 static struct ibm_struct brightness_driver_data = { 5870 .name = "brightness", 5871 .read = brightness_read, 5872 .write = brightness_write, 5873 .exit = brightness_exit, 5874 .suspend = brightness_suspend, 5875 .shutdown = brightness_shutdown, 5876 }; 5877 5878 /************************************************************************* 5879 * Volume subdriver 5880 */ 5881 5882 static int volume_offset = 0x30; 5883 5884 static int volume_read(char *p) 5885 { 5886 int len = 0; 5887 u8 level; 5888 5889 if (!acpi_ec_read(volume_offset, &level)) { 5890 len += sprintf(p + len, "level:\t\tunreadable\n"); 5891 } else { 5892 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); 5893 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); 5894 len += sprintf(p + len, "commands:\tup, down, mute\n"); 5895 len += sprintf(p + len, "commands:\tlevel <level>" 5896 " (<level> is 0-15)\n"); 5897 } 5898 5899 return len; 5900 } 5901 5902 static int volume_write(char *buf) 5903 { 5904 int cmos_cmd, inc, i; 5905 u8 level, mute; 5906 int new_level, new_mute; 5907 char *cmd; 5908 5909 while ((cmd = next_cmd(&buf))) { 5910 if (!acpi_ec_read(volume_offset, &level)) 5911 return -EIO; 5912 new_mute = mute = level & 0x40; 5913 new_level = level = level & 0xf; 5914 5915 if (strlencmp(cmd, "up") == 0) { 5916 if (mute) 5917 new_mute = 0; 5918 else 5919 new_level = level == 15 ? 15 : level + 1; 5920 } else if (strlencmp(cmd, "down") == 0) { 5921 if (mute) 5922 new_mute = 0; 5923 else 5924 new_level = level == 0 ? 0 : level - 1; 5925 } else if (sscanf(cmd, "level %d", &new_level) == 1 && 5926 new_level >= 0 && new_level <= 15) { 5927 /* new_level set */ 5928 } else if (strlencmp(cmd, "mute") == 0) { 5929 new_mute = 0x40; 5930 } else 5931 return -EINVAL; 5932 5933 if (new_level != level) { 5934 /* mute doesn't change */ 5935 5936 cmos_cmd = (new_level > level) ? 5937 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; 5938 inc = new_level > level ? 1 : -1; 5939 5940 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || 5941 !acpi_ec_write(volume_offset, level))) 5942 return -EIO; 5943 5944 for (i = level; i != new_level; i += inc) 5945 if (issue_thinkpad_cmos_command(cmos_cmd) || 5946 !acpi_ec_write(volume_offset, i + inc)) 5947 return -EIO; 5948 5949 if (mute && 5950 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || 5951 !acpi_ec_write(volume_offset, new_level + mute))) { 5952 return -EIO; 5953 } 5954 } 5955 5956 if (new_mute != mute) { 5957 /* level doesn't change */ 5958 5959 cmos_cmd = (new_mute) ? 5960 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; 5961 5962 if (issue_thinkpad_cmos_command(cmos_cmd) || 5963 !acpi_ec_write(volume_offset, level + new_mute)) 5964 return -EIO; 5965 } 5966 } 5967 5968 return 0; 5969 } 5970 5971 static struct ibm_struct volume_driver_data = { 5972 .name = "volume", 5973 .read = volume_read, 5974 .write = volume_write, 5975 }; 5976 5977 /************************************************************************* 5978 * Fan subdriver 5979 */ 5980 5981 /* 5982 * FAN ACCESS MODES 5983 * 5984 * TPACPI_FAN_RD_ACPI_GFAN: 5985 * ACPI GFAN method: returns fan level 5986 * 5987 * see TPACPI_FAN_WR_ACPI_SFAN 5988 * EC 0x2f (HFSP) not available if GFAN exists 5989 * 5990 * TPACPI_FAN_WR_ACPI_SFAN: 5991 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 5992 * 5993 * EC 0x2f (HFSP) might be available *for reading*, but do not use 5994 * it for writing. 5995 * 5996 * TPACPI_FAN_WR_TPEC: 5997 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 5998 * Supported on almost all ThinkPads 5999 * 6000 * Fan speed changes of any sort (including those caused by the 6001 * disengaged mode) are usually done slowly by the firmware as the 6002 * maximum ammount of fan duty cycle change per second seems to be 6003 * limited. 6004 * 6005 * Reading is not available if GFAN exists. 6006 * Writing is not available if SFAN exists. 6007 * 6008 * Bits 6009 * 7 automatic mode engaged; 6010 * (default operation mode of the ThinkPad) 6011 * fan level is ignored in this mode. 6012 * 6 full speed mode (takes precedence over bit 7); 6013 * not available on all thinkpads. May disable 6014 * the tachometer while the fan controller ramps up 6015 * the speed (which can take up to a few *minutes*). 6016 * Speeds up fan to 100% duty-cycle, which is far above 6017 * the standard RPM levels. It is not impossible that 6018 * it could cause hardware damage. 6019 * 5-3 unused in some models. Extra bits for fan level 6020 * in others, but still useless as all values above 6021 * 7 map to the same speed as level 7 in these models. 6022 * 2-0 fan level (0..7 usually) 6023 * 0x00 = stop 6024 * 0x07 = max (set when temperatures critical) 6025 * Some ThinkPads may have other levels, see 6026 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 6027 * 6028 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 6029 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT 6030 * does so, its initial value is meaningless (0x07). 6031 * 6032 * For firmware bugs, refer to: 6033 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 6034 * 6035 * ---- 6036 * 6037 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 6038 * Main fan tachometer reading (in RPM) 6039 * 6040 * This register is present on all ThinkPads with a new-style EC, and 6041 * it is known not to be present on the A21m/e, and T22, as there is 6042 * something else in offset 0x84 according to the ACPI DSDT. Other 6043 * ThinkPads from this same time period (and earlier) probably lack the 6044 * tachometer as well. 6045 * 6046 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 6047 * was never fixed by IBM to report the EC firmware version string 6048 * probably support the tachometer (like the early X models), so 6049 * detecting it is quite hard. We need more data to know for sure. 6050 * 6051 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 6052 * might result. 6053 * 6054 * FIRMWARE BUG: may go stale while the EC is switching to full speed 6055 * mode. 6056 * 6057 * For firmware bugs, refer to: 6058 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 6059 * 6060 * ---- 6061 * 6062 * ThinkPad EC register 0x31 bit 0 (only on select models) 6063 * 6064 * When bit 0 of EC register 0x31 is zero, the tachometer registers 6065 * show the speed of the main fan. When bit 0 of EC register 0x31 6066 * is one, the tachometer registers show the speed of the auxiliary 6067 * fan. 6068 * 6069 * Fan control seems to affect both fans, regardless of the state 6070 * of this bit. 6071 * 6072 * So far, only the firmware for the X60/X61 non-tablet versions 6073 * seem to support this (firmware TP-7M). 6074 * 6075 * TPACPI_FAN_WR_ACPI_FANS: 6076 * ThinkPad X31, X40, X41. Not available in the X60. 6077 * 6078 * FANS ACPI handle: takes three arguments: low speed, medium speed, 6079 * high speed. ACPI DSDT seems to map these three speeds to levels 6080 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 6081 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 6082 * 6083 * The speeds are stored on handles 6084 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 6085 * 6086 * There are three default speed sets, acessible as handles: 6087 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 6088 * 6089 * ACPI DSDT switches which set is in use depending on various 6090 * factors. 6091 * 6092 * TPACPI_FAN_WR_TPEC is also available and should be used to 6093 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 6094 * but the ACPI tables just mention level 7. 6095 */ 6096 6097 enum { /* Fan control constants */ 6098 fan_status_offset = 0x2f, /* EC register 0x2f */ 6099 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 6100 * 0x84 must be read before 0x85 */ 6101 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 6102 bit 0 selects which fan is active */ 6103 6104 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 6105 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 6106 6107 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 6108 }; 6109 6110 enum fan_status_access_mode { 6111 TPACPI_FAN_NONE = 0, /* No fan status or control */ 6112 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 6113 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 6114 }; 6115 6116 enum fan_control_access_mode { 6117 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 6118 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 6119 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 6120 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 6121 }; 6122 6123 enum fan_control_commands { 6124 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 6125 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 6126 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 6127 * and also watchdog cmd */ 6128 }; 6129 6130 static int fan_control_allowed; 6131 6132 static enum fan_status_access_mode fan_status_access_mode; 6133 static enum fan_control_access_mode fan_control_access_mode; 6134 static enum fan_control_commands fan_control_commands; 6135 6136 static u8 fan_control_initial_status; 6137 static u8 fan_control_desired_level; 6138 static u8 fan_control_resume_level; 6139 static int fan_watchdog_maxinterval; 6140 6141 static struct mutex fan_mutex; 6142 6143 static void fan_watchdog_fire(struct work_struct *ignored); 6144 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 6145 6146 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 6147 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 6148 "\\FSPD", /* 600e/x, 770e, 770x */ 6149 ); /* all others */ 6150 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 6151 "JFNS", /* 770x-JL */ 6152 ); /* all others */ 6153 6154 /* 6155 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 6156 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 6157 * be in auto mode (0x80). 6158 * 6159 * This is corrected by any write to HFSP either by the driver, or 6160 * by the firmware. 6161 * 6162 * We assume 0x07 really means auto mode while this quirk is active, 6163 * as this is far more likely than the ThinkPad being in level 7, 6164 * which is only used by the firmware during thermal emergencies. 6165 * 6166 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 6167 * TP-70 (T43, R52), which are known to be buggy. 6168 */ 6169 6170 static void fan_quirk1_setup(void) 6171 { 6172 if (fan_control_initial_status == 0x07) { 6173 printk(TPACPI_NOTICE 6174 "fan_init: initial fan status is unknown, " 6175 "assuming it is in auto mode\n"); 6176 tp_features.fan_ctrl_status_undef = 1; 6177 } 6178 } 6179 6180 static void fan_quirk1_handle(u8 *fan_status) 6181 { 6182 if (unlikely(tp_features.fan_ctrl_status_undef)) { 6183 if (*fan_status != fan_control_initial_status) { 6184 /* something changed the HFSP regisnter since 6185 * driver init time, so it is not undefined 6186 * anymore */ 6187 tp_features.fan_ctrl_status_undef = 0; 6188 } else { 6189 /* Return most likely status. In fact, it 6190 * might be the only possible status */ 6191 *fan_status = TP_EC_FAN_AUTO; 6192 } 6193 } 6194 } 6195 6196 /* Select main fan on X60/X61, NOOP on others */ 6197 static bool fan_select_fan1(void) 6198 { 6199 if (tp_features.second_fan) { 6200 u8 val; 6201 6202 if (ec_read(fan_select_offset, &val) < 0) 6203 return false; 6204 val &= 0xFEU; 6205 if (ec_write(fan_select_offset, val) < 0) 6206 return false; 6207 } 6208 return true; 6209 } 6210 6211 /* Select secondary fan on X60/X61 */ 6212 static bool fan_select_fan2(void) 6213 { 6214 u8 val; 6215 6216 if (!tp_features.second_fan) 6217 return false; 6218 6219 if (ec_read(fan_select_offset, &val) < 0) 6220 return false; 6221 val |= 0x01U; 6222 if (ec_write(fan_select_offset, val) < 0) 6223 return false; 6224 6225 return true; 6226 } 6227 6228 /* 6229 * Call with fan_mutex held 6230 */ 6231 static void fan_update_desired_level(u8 status) 6232 { 6233 if ((status & 6234 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 6235 if (status > 7) 6236 fan_control_desired_level = 7; 6237 else 6238 fan_control_desired_level = status; 6239 } 6240 } 6241 6242 static int fan_get_status(u8 *status) 6243 { 6244 u8 s; 6245 6246 /* TODO: 6247 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 6248 6249 switch (fan_status_access_mode) { 6250 case TPACPI_FAN_RD_ACPI_GFAN: 6251 /* 570, 600e/x, 770e, 770x */ 6252 6253 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) 6254 return -EIO; 6255 6256 if (likely(status)) 6257 *status = s & 0x07; 6258 6259 break; 6260 6261 case TPACPI_FAN_RD_TPEC: 6262 /* all except 570, 600e/x, 770e, 770x */ 6263 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 6264 return -EIO; 6265 6266 if (likely(status)) { 6267 *status = s; 6268 fan_quirk1_handle(status); 6269 } 6270 6271 break; 6272 6273 default: 6274 return -ENXIO; 6275 } 6276 6277 return 0; 6278 } 6279 6280 static int fan_get_status_safe(u8 *status) 6281 { 6282 int rc; 6283 u8 s; 6284 6285 if (mutex_lock_killable(&fan_mutex)) 6286 return -ERESTARTSYS; 6287 rc = fan_get_status(&s); 6288 if (!rc) 6289 fan_update_desired_level(s); 6290 mutex_unlock(&fan_mutex); 6291 6292 if (status) 6293 *status = s; 6294 6295 return rc; 6296 } 6297 6298 static int fan_get_speed(unsigned int *speed) 6299 { 6300 u8 hi, lo; 6301 6302 switch (fan_status_access_mode) { 6303 case TPACPI_FAN_RD_TPEC: 6304 /* all except 570, 600e/x, 770e, 770x */ 6305 if (unlikely(!fan_select_fan1())) 6306 return -EIO; 6307 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 6308 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 6309 return -EIO; 6310 6311 if (likely(speed)) 6312 *speed = (hi << 8) | lo; 6313 6314 break; 6315 6316 default: 6317 return -ENXIO; 6318 } 6319 6320 return 0; 6321 } 6322 6323 static int fan2_get_speed(unsigned int *speed) 6324 { 6325 u8 hi, lo; 6326 bool rc; 6327 6328 switch (fan_status_access_mode) { 6329 case TPACPI_FAN_RD_TPEC: 6330 /* all except 570, 600e/x, 770e, 770x */ 6331 if (unlikely(!fan_select_fan2())) 6332 return -EIO; 6333 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 6334 !acpi_ec_read(fan_rpm_offset + 1, &hi); 6335 fan_select_fan1(); /* play it safe */ 6336 if (rc) 6337 return -EIO; 6338 6339 if (likely(speed)) 6340 *speed = (hi << 8) | lo; 6341 6342 break; 6343 6344 default: 6345 return -ENXIO; 6346 } 6347 6348 return 0; 6349 } 6350 6351 static int fan_set_level(int level) 6352 { 6353 if (!fan_control_allowed) 6354 return -EPERM; 6355 6356 switch (fan_control_access_mode) { 6357 case TPACPI_FAN_WR_ACPI_SFAN: 6358 if (level >= 0 && level <= 7) { 6359 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 6360 return -EIO; 6361 } else 6362 return -EINVAL; 6363 break; 6364 6365 case TPACPI_FAN_WR_ACPI_FANS: 6366 case TPACPI_FAN_WR_TPEC: 6367 if (!(level & TP_EC_FAN_AUTO) && 6368 !(level & TP_EC_FAN_FULLSPEED) && 6369 ((level < 0) || (level > 7))) 6370 return -EINVAL; 6371 6372 /* safety net should the EC not support AUTO 6373 * or FULLSPEED mode bits and just ignore them */ 6374 if (level & TP_EC_FAN_FULLSPEED) 6375 level |= 7; /* safety min speed 7 */ 6376 else if (level & TP_EC_FAN_AUTO) 6377 level |= 4; /* safety min speed 4 */ 6378 6379 if (!acpi_ec_write(fan_status_offset, level)) 6380 return -EIO; 6381 else 6382 tp_features.fan_ctrl_status_undef = 0; 6383 break; 6384 6385 default: 6386 return -ENXIO; 6387 } 6388 6389 vdbg_printk(TPACPI_DBG_FAN, 6390 "fan control: set fan control register to 0x%02x\n", level); 6391 return 0; 6392 } 6393 6394 static int fan_set_level_safe(int level) 6395 { 6396 int rc; 6397 6398 if (!fan_control_allowed) 6399 return -EPERM; 6400 6401 if (mutex_lock_killable(&fan_mutex)) 6402 return -ERESTARTSYS; 6403 6404 if (level == TPACPI_FAN_LAST_LEVEL) 6405 level = fan_control_desired_level; 6406 6407 rc = fan_set_level(level); 6408 if (!rc) 6409 fan_update_desired_level(level); 6410 6411 mutex_unlock(&fan_mutex); 6412 return rc; 6413 } 6414 6415 static int fan_set_enable(void) 6416 { 6417 u8 s; 6418 int rc; 6419 6420 if (!fan_control_allowed) 6421 return -EPERM; 6422 6423 if (mutex_lock_killable(&fan_mutex)) 6424 return -ERESTARTSYS; 6425 6426 switch (fan_control_access_mode) { 6427 case TPACPI_FAN_WR_ACPI_FANS: 6428 case TPACPI_FAN_WR_TPEC: 6429 rc = fan_get_status(&s); 6430 if (rc < 0) 6431 break; 6432 6433 /* Don't go out of emergency fan mode */ 6434 if (s != 7) { 6435 s &= 0x07; 6436 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 6437 } 6438 6439 if (!acpi_ec_write(fan_status_offset, s)) 6440 rc = -EIO; 6441 else { 6442 tp_features.fan_ctrl_status_undef = 0; 6443 rc = 0; 6444 } 6445 break; 6446 6447 case TPACPI_FAN_WR_ACPI_SFAN: 6448 rc = fan_get_status(&s); 6449 if (rc < 0) 6450 break; 6451 6452 s &= 0x07; 6453 6454 /* Set fan to at least level 4 */ 6455 s |= 4; 6456 6457 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 6458 rc = -EIO; 6459 else 6460 rc = 0; 6461 break; 6462 6463 default: 6464 rc = -ENXIO; 6465 } 6466 6467 mutex_unlock(&fan_mutex); 6468 6469 if (!rc) 6470 vdbg_printk(TPACPI_DBG_FAN, 6471 "fan control: set fan control register to 0x%02x\n", 6472 s); 6473 return rc; 6474 } 6475 6476 static int fan_set_disable(void) 6477 { 6478 int rc; 6479 6480 if (!fan_control_allowed) 6481 return -EPERM; 6482 6483 if (mutex_lock_killable(&fan_mutex)) 6484 return -ERESTARTSYS; 6485 6486 rc = 0; 6487 switch (fan_control_access_mode) { 6488 case TPACPI_FAN_WR_ACPI_FANS: 6489 case TPACPI_FAN_WR_TPEC: 6490 if (!acpi_ec_write(fan_status_offset, 0x00)) 6491 rc = -EIO; 6492 else { 6493 fan_control_desired_level = 0; 6494 tp_features.fan_ctrl_status_undef = 0; 6495 } 6496 break; 6497 6498 case TPACPI_FAN_WR_ACPI_SFAN: 6499 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 6500 rc = -EIO; 6501 else 6502 fan_control_desired_level = 0; 6503 break; 6504 6505 default: 6506 rc = -ENXIO; 6507 } 6508 6509 if (!rc) 6510 vdbg_printk(TPACPI_DBG_FAN, 6511 "fan control: set fan control register to 0\n"); 6512 6513 mutex_unlock(&fan_mutex); 6514 return rc; 6515 } 6516 6517 static int fan_set_speed(int speed) 6518 { 6519 int rc; 6520 6521 if (!fan_control_allowed) 6522 return -EPERM; 6523 6524 if (mutex_lock_killable(&fan_mutex)) 6525 return -ERESTARTSYS; 6526 6527 rc = 0; 6528 switch (fan_control_access_mode) { 6529 case TPACPI_FAN_WR_ACPI_FANS: 6530 if (speed >= 0 && speed <= 65535) { 6531 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 6532 speed, speed, speed)) 6533 rc = -EIO; 6534 } else 6535 rc = -EINVAL; 6536 break; 6537 6538 default: 6539 rc = -ENXIO; 6540 } 6541 6542 mutex_unlock(&fan_mutex); 6543 return rc; 6544 } 6545 6546 static void fan_watchdog_reset(void) 6547 { 6548 static int fan_watchdog_active; 6549 6550 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 6551 return; 6552 6553 if (fan_watchdog_active) 6554 cancel_delayed_work(&fan_watchdog_task); 6555 6556 if (fan_watchdog_maxinterval > 0 && 6557 tpacpi_lifecycle != TPACPI_LIFE_EXITING) { 6558 fan_watchdog_active = 1; 6559 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task, 6560 msecs_to_jiffies(fan_watchdog_maxinterval 6561 * 1000))) { 6562 printk(TPACPI_ERR 6563 "failed to queue the fan watchdog, " 6564 "watchdog will not trigger\n"); 6565 } 6566 } else 6567 fan_watchdog_active = 0; 6568 } 6569 6570 static void fan_watchdog_fire(struct work_struct *ignored) 6571 { 6572 int rc; 6573 6574 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 6575 return; 6576 6577 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); 6578 rc = fan_set_enable(); 6579 if (rc < 0) { 6580 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " 6581 "will try again later...\n", -rc); 6582 /* reschedule for later */ 6583 fan_watchdog_reset(); 6584 } 6585 } 6586 6587 /* 6588 * SYSFS fan layout: hwmon compatible (device) 6589 * 6590 * pwm*_enable: 6591 * 0: "disengaged" mode 6592 * 1: manual mode 6593 * 2: native EC "auto" mode (recommended, hardware default) 6594 * 6595 * pwm*: set speed in manual mode, ignored otherwise. 6596 * 0 is level 0; 255 is level 7. Intermediate points done with linear 6597 * interpolation. 6598 * 6599 * fan*_input: tachometer reading, RPM 6600 * 6601 * 6602 * SYSFS fan layout: extensions 6603 * 6604 * fan_watchdog (driver): 6605 * fan watchdog interval in seconds, 0 disables (default), max 120 6606 */ 6607 6608 /* sysfs fan pwm1_enable ----------------------------------------------- */ 6609 static ssize_t fan_pwm1_enable_show(struct device *dev, 6610 struct device_attribute *attr, 6611 char *buf) 6612 { 6613 int res, mode; 6614 u8 status; 6615 6616 res = fan_get_status_safe(&status); 6617 if (res) 6618 return res; 6619 6620 if (status & TP_EC_FAN_FULLSPEED) { 6621 mode = 0; 6622 } else if (status & TP_EC_FAN_AUTO) { 6623 mode = 2; 6624 } else 6625 mode = 1; 6626 6627 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 6628 } 6629 6630 static ssize_t fan_pwm1_enable_store(struct device *dev, 6631 struct device_attribute *attr, 6632 const char *buf, size_t count) 6633 { 6634 unsigned long t; 6635 int res, level; 6636 6637 if (parse_strtoul(buf, 2, &t)) 6638 return -EINVAL; 6639 6640 tpacpi_disclose_usertask("hwmon pwm1_enable", 6641 "set fan mode to %lu\n", t); 6642 6643 switch (t) { 6644 case 0: 6645 level = TP_EC_FAN_FULLSPEED; 6646 break; 6647 case 1: 6648 level = TPACPI_FAN_LAST_LEVEL; 6649 break; 6650 case 2: 6651 level = TP_EC_FAN_AUTO; 6652 break; 6653 case 3: 6654 /* reserved for software-controlled auto mode */ 6655 return -ENOSYS; 6656 default: 6657 return -EINVAL; 6658 } 6659 6660 res = fan_set_level_safe(level); 6661 if (res == -ENXIO) 6662 return -EINVAL; 6663 else if (res < 0) 6664 return res; 6665 6666 fan_watchdog_reset(); 6667 6668 return count; 6669 } 6670 6671 static struct device_attribute dev_attr_fan_pwm1_enable = 6672 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 6673 fan_pwm1_enable_show, fan_pwm1_enable_store); 6674 6675 /* sysfs fan pwm1 ------------------------------------------------------ */ 6676 static ssize_t fan_pwm1_show(struct device *dev, 6677 struct device_attribute *attr, 6678 char *buf) 6679 { 6680 int res; 6681 u8 status; 6682 6683 res = fan_get_status_safe(&status); 6684 if (res) 6685 return res; 6686 6687 if ((status & 6688 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 6689 status = fan_control_desired_level; 6690 6691 if (status > 7) 6692 status = 7; 6693 6694 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 6695 } 6696 6697 static ssize_t fan_pwm1_store(struct device *dev, 6698 struct device_attribute *attr, 6699 const char *buf, size_t count) 6700 { 6701 unsigned long s; 6702 int rc; 6703 u8 status, newlevel; 6704 6705 if (parse_strtoul(buf, 255, &s)) 6706 return -EINVAL; 6707 6708 tpacpi_disclose_usertask("hwmon pwm1", 6709 "set fan speed to %lu\n", s); 6710 6711 /* scale down from 0-255 to 0-7 */ 6712 newlevel = (s >> 5) & 0x07; 6713 6714 if (mutex_lock_killable(&fan_mutex)) 6715 return -ERESTARTSYS; 6716 6717 rc = fan_get_status(&status); 6718 if (!rc && (status & 6719 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 6720 rc = fan_set_level(newlevel); 6721 if (rc == -ENXIO) 6722 rc = -EINVAL; 6723 else if (!rc) { 6724 fan_update_desired_level(newlevel); 6725 fan_watchdog_reset(); 6726 } 6727 } 6728 6729 mutex_unlock(&fan_mutex); 6730 return (rc)? rc : count; 6731 } 6732 6733 static struct device_attribute dev_attr_fan_pwm1 = 6734 __ATTR(pwm1, S_IWUSR | S_IRUGO, 6735 fan_pwm1_show, fan_pwm1_store); 6736 6737 /* sysfs fan fan1_input ------------------------------------------------ */ 6738 static ssize_t fan_fan1_input_show(struct device *dev, 6739 struct device_attribute *attr, 6740 char *buf) 6741 { 6742 int res; 6743 unsigned int speed; 6744 6745 res = fan_get_speed(&speed); 6746 if (res < 0) 6747 return res; 6748 6749 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 6750 } 6751 6752 static struct device_attribute dev_attr_fan_fan1_input = 6753 __ATTR(fan1_input, S_IRUGO, 6754 fan_fan1_input_show, NULL); 6755 6756 /* sysfs fan fan2_input ------------------------------------------------ */ 6757 static ssize_t fan_fan2_input_show(struct device *dev, 6758 struct device_attribute *attr, 6759 char *buf) 6760 { 6761 int res; 6762 unsigned int speed; 6763 6764 res = fan2_get_speed(&speed); 6765 if (res < 0) 6766 return res; 6767 6768 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 6769 } 6770 6771 static struct device_attribute dev_attr_fan_fan2_input = 6772 __ATTR(fan2_input, S_IRUGO, 6773 fan_fan2_input_show, NULL); 6774 6775 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 6776 static ssize_t fan_fan_watchdog_show(struct device_driver *drv, 6777 char *buf) 6778 { 6779 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 6780 } 6781 6782 static ssize_t fan_fan_watchdog_store(struct device_driver *drv, 6783 const char *buf, size_t count) 6784 { 6785 unsigned long t; 6786 6787 if (parse_strtoul(buf, 120, &t)) 6788 return -EINVAL; 6789 6790 if (!fan_control_allowed) 6791 return -EPERM; 6792 6793 fan_watchdog_maxinterval = t; 6794 fan_watchdog_reset(); 6795 6796 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 6797 6798 return count; 6799 } 6800 6801 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, 6802 fan_fan_watchdog_show, fan_fan_watchdog_store); 6803 6804 /* --------------------------------------------------------------------- */ 6805 static struct attribute *fan_attributes[] = { 6806 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, 6807 &dev_attr_fan_fan1_input.attr, 6808 NULL, /* for fan2_input */ 6809 NULL 6810 }; 6811 6812 static const struct attribute_group fan_attr_group = { 6813 .attrs = fan_attributes, 6814 }; 6815 6816 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 6817 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 6818 6819 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \ 6820 { .vendor = PCI_VENDOR_ID_IBM, \ 6821 .bios = TPACPI_MATCH_ANY, \ 6822 .ec = TPID(__id1, __id2), \ 6823 .quirks = __quirks } 6824 6825 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \ 6826 { .vendor = PCI_VENDOR_ID_LENOVO, \ 6827 .bios = TPACPI_MATCH_ANY, \ 6828 .ec = TPID(__id1, __id2), \ 6829 .quirks = __quirks } 6830 6831 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 6832 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), 6833 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), 6834 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), 6835 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), 6836 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), 6837 }; 6838 6839 #undef TPACPI_FAN_QL 6840 #undef TPACPI_FAN_QI 6841 6842 static int __init fan_init(struct ibm_init_struct *iibm) 6843 { 6844 int rc; 6845 unsigned long quirks; 6846 6847 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 6848 "initializing fan subdriver\n"); 6849 6850 mutex_init(&fan_mutex); 6851 fan_status_access_mode = TPACPI_FAN_NONE; 6852 fan_control_access_mode = TPACPI_FAN_WR_NONE; 6853 fan_control_commands = 0; 6854 fan_watchdog_maxinterval = 0; 6855 tp_features.fan_ctrl_status_undef = 0; 6856 tp_features.second_fan = 0; 6857 fan_control_desired_level = 7; 6858 6859 TPACPI_ACPIHANDLE_INIT(fans); 6860 TPACPI_ACPIHANDLE_INIT(gfan); 6861 TPACPI_ACPIHANDLE_INIT(sfan); 6862 6863 quirks = tpacpi_check_quirks(fan_quirk_table, 6864 ARRAY_SIZE(fan_quirk_table)); 6865 6866 if (gfan_handle) { 6867 /* 570, 600e/x, 770e, 770x */ 6868 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 6869 } else { 6870 /* all other ThinkPads: note that even old-style 6871 * ThinkPad ECs supports the fan control register */ 6872 if (likely(acpi_ec_read(fan_status_offset, 6873 &fan_control_initial_status))) { 6874 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 6875 if (quirks & TPACPI_FAN_Q1) 6876 fan_quirk1_setup(); 6877 if (quirks & TPACPI_FAN_2FAN) { 6878 tp_features.second_fan = 1; 6879 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 6880 "secondary fan support enabled\n"); 6881 } 6882 } else { 6883 printk(TPACPI_ERR 6884 "ThinkPad ACPI EC access misbehaving, " 6885 "fan status and control unavailable\n"); 6886 return 1; 6887 } 6888 } 6889 6890 if (sfan_handle) { 6891 /* 570, 770x-JL */ 6892 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 6893 fan_control_commands |= 6894 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 6895 } else { 6896 if (!gfan_handle) { 6897 /* gfan without sfan means no fan control */ 6898 /* all other models implement TP EC 0x2f control */ 6899 6900 if (fans_handle) { 6901 /* X31, X40, X41 */ 6902 fan_control_access_mode = 6903 TPACPI_FAN_WR_ACPI_FANS; 6904 fan_control_commands |= 6905 TPACPI_FAN_CMD_SPEED | 6906 TPACPI_FAN_CMD_LEVEL | 6907 TPACPI_FAN_CMD_ENABLE; 6908 } else { 6909 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 6910 fan_control_commands |= 6911 TPACPI_FAN_CMD_LEVEL | 6912 TPACPI_FAN_CMD_ENABLE; 6913 } 6914 } 6915 } 6916 6917 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 6918 "fan is %s, modes %d, %d\n", 6919 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 6920 fan_control_access_mode != TPACPI_FAN_WR_NONE), 6921 fan_status_access_mode, fan_control_access_mode); 6922 6923 /* fan control master switch */ 6924 if (!fan_control_allowed) { 6925 fan_control_access_mode = TPACPI_FAN_WR_NONE; 6926 fan_control_commands = 0; 6927 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 6928 "fan control features disabled by parameter\n"); 6929 } 6930 6931 /* update fan_control_desired_level */ 6932 if (fan_status_access_mode != TPACPI_FAN_NONE) 6933 fan_get_status_safe(NULL); 6934 6935 if (fan_status_access_mode != TPACPI_FAN_NONE || 6936 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 6937 if (tp_features.second_fan) { 6938 /* attach second fan tachometer */ 6939 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 6940 &dev_attr_fan_fan2_input.attr; 6941 } 6942 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 6943 &fan_attr_group); 6944 if (rc < 0) 6945 return rc; 6946 6947 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 6948 &driver_attr_fan_watchdog); 6949 if (rc < 0) { 6950 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 6951 &fan_attr_group); 6952 return rc; 6953 } 6954 return 0; 6955 } else 6956 return 1; 6957 } 6958 6959 static void fan_exit(void) 6960 { 6961 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 6962 "cancelling any pending fan watchdog tasks\n"); 6963 6964 /* FIXME: can we really do this unconditionally? */ 6965 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); 6966 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 6967 &driver_attr_fan_watchdog); 6968 6969 cancel_delayed_work(&fan_watchdog_task); 6970 flush_workqueue(tpacpi_wq); 6971 } 6972 6973 static void fan_suspend(pm_message_t state) 6974 { 6975 int rc; 6976 6977 if (!fan_control_allowed) 6978 return; 6979 6980 /* Store fan status in cache */ 6981 fan_control_resume_level = 0; 6982 rc = fan_get_status_safe(&fan_control_resume_level); 6983 if (rc < 0) 6984 printk(TPACPI_NOTICE 6985 "failed to read fan level for later " 6986 "restore during resume: %d\n", rc); 6987 6988 /* if it is undefined, don't attempt to restore it. 6989 * KEEP THIS LAST */ 6990 if (tp_features.fan_ctrl_status_undef) 6991 fan_control_resume_level = 0; 6992 } 6993 6994 static void fan_resume(void) 6995 { 6996 u8 current_level = 7; 6997 bool do_set = false; 6998 int rc; 6999 7000 /* DSDT *always* updates status on resume */ 7001 tp_features.fan_ctrl_status_undef = 0; 7002 7003 if (!fan_control_allowed || 7004 !fan_control_resume_level || 7005 (fan_get_status_safe(¤t_level) < 0)) 7006 return; 7007 7008 switch (fan_control_access_mode) { 7009 case TPACPI_FAN_WR_ACPI_SFAN: 7010 /* never decrease fan level */ 7011 do_set = (fan_control_resume_level > current_level); 7012 break; 7013 case TPACPI_FAN_WR_ACPI_FANS: 7014 case TPACPI_FAN_WR_TPEC: 7015 /* never decrease fan level, scale is: 7016 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 7017 * 7018 * We expect the firmware to set either 7 or AUTO, but we 7019 * handle FULLSPEED out of paranoia. 7020 * 7021 * So, we can safely only restore FULLSPEED or 7, anything 7022 * else could slow the fan. Restoring AUTO is useless, at 7023 * best that's exactly what the DSDT already set (it is the 7024 * slower it uses). 7025 * 7026 * Always keep in mind that the DSDT *will* have set the 7027 * fans to what the vendor supposes is the best level. We 7028 * muck with it only to speed the fan up. 7029 */ 7030 if (fan_control_resume_level != 7 && 7031 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 7032 return; 7033 else 7034 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 7035 (current_level != fan_control_resume_level); 7036 break; 7037 default: 7038 return; 7039 } 7040 if (do_set) { 7041 printk(TPACPI_NOTICE 7042 "restoring fan level to 0x%02x\n", 7043 fan_control_resume_level); 7044 rc = fan_set_level_safe(fan_control_resume_level); 7045 if (rc < 0) 7046 printk(TPACPI_NOTICE 7047 "failed to restore fan level: %d\n", rc); 7048 } 7049 } 7050 7051 static int fan_read(char *p) 7052 { 7053 int len = 0; 7054 int rc; 7055 u8 status; 7056 unsigned int speed = 0; 7057 7058 switch (fan_status_access_mode) { 7059 case TPACPI_FAN_RD_ACPI_GFAN: 7060 /* 570, 600e/x, 770e, 770x */ 7061 rc = fan_get_status_safe(&status); 7062 if (rc < 0) 7063 return rc; 7064 7065 len += sprintf(p + len, "status:\t\t%s\n" 7066 "level:\t\t%d\n", 7067 (status != 0) ? "enabled" : "disabled", status); 7068 break; 7069 7070 case TPACPI_FAN_RD_TPEC: 7071 /* all except 570, 600e/x, 770e, 770x */ 7072 rc = fan_get_status_safe(&status); 7073 if (rc < 0) 7074 return rc; 7075 7076 len += sprintf(p + len, "status:\t\t%s\n", 7077 (status != 0) ? "enabled" : "disabled"); 7078 7079 rc = fan_get_speed(&speed); 7080 if (rc < 0) 7081 return rc; 7082 7083 len += sprintf(p + len, "speed:\t\t%d\n", speed); 7084 7085 if (status & TP_EC_FAN_FULLSPEED) 7086 /* Disengaged mode takes precedence */ 7087 len += sprintf(p + len, "level:\t\tdisengaged\n"); 7088 else if (status & TP_EC_FAN_AUTO) 7089 len += sprintf(p + len, "level:\t\tauto\n"); 7090 else 7091 len += sprintf(p + len, "level:\t\t%d\n", status); 7092 break; 7093 7094 case TPACPI_FAN_NONE: 7095 default: 7096 len += sprintf(p + len, "status:\t\tnot supported\n"); 7097 } 7098 7099 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 7100 len += sprintf(p + len, "commands:\tlevel <level>"); 7101 7102 switch (fan_control_access_mode) { 7103 case TPACPI_FAN_WR_ACPI_SFAN: 7104 len += sprintf(p + len, " (<level> is 0-7)\n"); 7105 break; 7106 7107 default: 7108 len += sprintf(p + len, " (<level> is 0-7, " 7109 "auto, disengaged, full-speed)\n"); 7110 break; 7111 } 7112 } 7113 7114 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 7115 len += sprintf(p + len, "commands:\tenable, disable\n" 7116 "commands:\twatchdog <timeout> (<timeout> " 7117 "is 0 (off), 1-120 (seconds))\n"); 7118 7119 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 7120 len += sprintf(p + len, "commands:\tspeed <speed>" 7121 " (<speed> is 0-65535)\n"); 7122 7123 return len; 7124 } 7125 7126 static int fan_write_cmd_level(const char *cmd, int *rc) 7127 { 7128 int level; 7129 7130 if (strlencmp(cmd, "level auto") == 0) 7131 level = TP_EC_FAN_AUTO; 7132 else if ((strlencmp(cmd, "level disengaged") == 0) | 7133 (strlencmp(cmd, "level full-speed") == 0)) 7134 level = TP_EC_FAN_FULLSPEED; 7135 else if (sscanf(cmd, "level %d", &level) != 1) 7136 return 0; 7137 7138 *rc = fan_set_level_safe(level); 7139 if (*rc == -ENXIO) 7140 printk(TPACPI_ERR "level command accepted for unsupported " 7141 "access mode %d", fan_control_access_mode); 7142 else if (!*rc) 7143 tpacpi_disclose_usertask("procfs fan", 7144 "set level to %d\n", level); 7145 7146 return 1; 7147 } 7148 7149 static int fan_write_cmd_enable(const char *cmd, int *rc) 7150 { 7151 if (strlencmp(cmd, "enable") != 0) 7152 return 0; 7153 7154 *rc = fan_set_enable(); 7155 if (*rc == -ENXIO) 7156 printk(TPACPI_ERR "enable command accepted for unsupported " 7157 "access mode %d", fan_control_access_mode); 7158 else if (!*rc) 7159 tpacpi_disclose_usertask("procfs fan", "enable\n"); 7160 7161 return 1; 7162 } 7163 7164 static int fan_write_cmd_disable(const char *cmd, int *rc) 7165 { 7166 if (strlencmp(cmd, "disable") != 0) 7167 return 0; 7168 7169 *rc = fan_set_disable(); 7170 if (*rc == -ENXIO) 7171 printk(TPACPI_ERR "disable command accepted for unsupported " 7172 "access mode %d", fan_control_access_mode); 7173 else if (!*rc) 7174 tpacpi_disclose_usertask("procfs fan", "disable\n"); 7175 7176 return 1; 7177 } 7178 7179 static int fan_write_cmd_speed(const char *cmd, int *rc) 7180 { 7181 int speed; 7182 7183 /* TODO: 7184 * Support speed <low> <medium> <high> ? */ 7185 7186 if (sscanf(cmd, "speed %d", &speed) != 1) 7187 return 0; 7188 7189 *rc = fan_set_speed(speed); 7190 if (*rc == -ENXIO) 7191 printk(TPACPI_ERR "speed command accepted for unsupported " 7192 "access mode %d", fan_control_access_mode); 7193 else if (!*rc) 7194 tpacpi_disclose_usertask("procfs fan", 7195 "set speed to %d\n", speed); 7196 7197 return 1; 7198 } 7199 7200 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 7201 { 7202 int interval; 7203 7204 if (sscanf(cmd, "watchdog %d", &interval) != 1) 7205 return 0; 7206 7207 if (interval < 0 || interval > 120) 7208 *rc = -EINVAL; 7209 else { 7210 fan_watchdog_maxinterval = interval; 7211 tpacpi_disclose_usertask("procfs fan", 7212 "set watchdog timer to %d\n", 7213 interval); 7214 } 7215 7216 return 1; 7217 } 7218 7219 static int fan_write(char *buf) 7220 { 7221 char *cmd; 7222 int rc = 0; 7223 7224 while (!rc && (cmd = next_cmd(&buf))) { 7225 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 7226 fan_write_cmd_level(cmd, &rc)) && 7227 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 7228 (fan_write_cmd_enable(cmd, &rc) || 7229 fan_write_cmd_disable(cmd, &rc) || 7230 fan_write_cmd_watchdog(cmd, &rc))) && 7231 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 7232 fan_write_cmd_speed(cmd, &rc)) 7233 ) 7234 rc = -EINVAL; 7235 else if (!rc) 7236 fan_watchdog_reset(); 7237 } 7238 7239 return rc; 7240 } 7241 7242 static struct ibm_struct fan_driver_data = { 7243 .name = "fan", 7244 .read = fan_read, 7245 .write = fan_write, 7246 .exit = fan_exit, 7247 .suspend = fan_suspend, 7248 .resume = fan_resume, 7249 }; 7250 7251 /**************************************************************************** 7252 **************************************************************************** 7253 * 7254 * Infrastructure 7255 * 7256 **************************************************************************** 7257 ****************************************************************************/ 7258 7259 /* sysfs name ---------------------------------------------------------- */ 7260 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, 7261 struct device_attribute *attr, 7262 char *buf) 7263 { 7264 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); 7265 } 7266 7267 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = 7268 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); 7269 7270 /* --------------------------------------------------------------------- */ 7271 7272 /* /proc support */ 7273 static struct proc_dir_entry *proc_dir; 7274 7275 /* 7276 * Module and infrastructure proble, init and exit handling 7277 */ 7278 7279 static int force_load; 7280 7281 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 7282 static const char * __init str_supported(int is_supported) 7283 { 7284 static char text_unsupported[] __initdata = "not supported"; 7285 7286 return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; 7287 } 7288 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 7289 7290 static void ibm_exit(struct ibm_struct *ibm) 7291 { 7292 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 7293 7294 list_del_init(&ibm->all_drivers); 7295 7296 if (ibm->flags.acpi_notify_installed) { 7297 dbg_printk(TPACPI_DBG_EXIT, 7298 "%s: acpi_remove_notify_handler\n", ibm->name); 7299 BUG_ON(!ibm->acpi); 7300 acpi_remove_notify_handler(*ibm->acpi->handle, 7301 ibm->acpi->type, 7302 dispatch_acpi_notify); 7303 ibm->flags.acpi_notify_installed = 0; 7304 ibm->flags.acpi_notify_installed = 0; 7305 } 7306 7307 if (ibm->flags.proc_created) { 7308 dbg_printk(TPACPI_DBG_EXIT, 7309 "%s: remove_proc_entry\n", ibm->name); 7310 remove_proc_entry(ibm->name, proc_dir); 7311 ibm->flags.proc_created = 0; 7312 } 7313 7314 if (ibm->flags.acpi_driver_registered) { 7315 dbg_printk(TPACPI_DBG_EXIT, 7316 "%s: acpi_bus_unregister_driver\n", ibm->name); 7317 BUG_ON(!ibm->acpi); 7318 acpi_bus_unregister_driver(ibm->acpi->driver); 7319 kfree(ibm->acpi->driver); 7320 ibm->acpi->driver = NULL; 7321 ibm->flags.acpi_driver_registered = 0; 7322 } 7323 7324 if (ibm->flags.init_called && ibm->exit) { 7325 ibm->exit(); 7326 ibm->flags.init_called = 0; 7327 } 7328 7329 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 7330 } 7331 7332 static int __init ibm_init(struct ibm_init_struct *iibm) 7333 { 7334 int ret; 7335 struct ibm_struct *ibm = iibm->data; 7336 struct proc_dir_entry *entry; 7337 7338 BUG_ON(ibm == NULL); 7339 7340 INIT_LIST_HEAD(&ibm->all_drivers); 7341 7342 if (ibm->flags.experimental && !experimental) 7343 return 0; 7344 7345 dbg_printk(TPACPI_DBG_INIT, 7346 "probing for %s\n", ibm->name); 7347 7348 if (iibm->init) { 7349 ret = iibm->init(iibm); 7350 if (ret > 0) 7351 return 0; /* probe failed */ 7352 if (ret) 7353 return ret; 7354 7355 ibm->flags.init_called = 1; 7356 } 7357 7358 if (ibm->acpi) { 7359 if (ibm->acpi->hid) { 7360 ret = register_tpacpi_subdriver(ibm); 7361 if (ret) 7362 goto err_out; 7363 } 7364 7365 if (ibm->acpi->notify) { 7366 ret = setup_acpi_notify(ibm); 7367 if (ret == -ENODEV) { 7368 printk(TPACPI_NOTICE "disabling subdriver %s\n", 7369 ibm->name); 7370 ret = 0; 7371 goto err_out; 7372 } 7373 if (ret < 0) 7374 goto err_out; 7375 } 7376 } 7377 7378 dbg_printk(TPACPI_DBG_INIT, 7379 "%s installed\n", ibm->name); 7380 7381 if (ibm->read) { 7382 entry = create_proc_entry(ibm->name, 7383 S_IFREG | S_IRUGO | S_IWUSR, 7384 proc_dir); 7385 if (!entry) { 7386 printk(TPACPI_ERR "unable to create proc entry %s\n", 7387 ibm->name); 7388 ret = -ENODEV; 7389 goto err_out; 7390 } 7391 entry->data = ibm; 7392 entry->read_proc = &dispatch_procfs_read; 7393 if (ibm->write) 7394 entry->write_proc = &dispatch_procfs_write; 7395 ibm->flags.proc_created = 1; 7396 } 7397 7398 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 7399 7400 return 0; 7401 7402 err_out: 7403 dbg_printk(TPACPI_DBG_INIT, 7404 "%s: at error exit path with result %d\n", 7405 ibm->name, ret); 7406 7407 ibm_exit(ibm); 7408 return (ret < 0)? ret : 0; 7409 } 7410 7411 /* Probing */ 7412 7413 static bool __pure __init tpacpi_is_fw_digit(const char c) 7414 { 7415 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); 7416 } 7417 7418 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */ 7419 static bool __pure __init tpacpi_is_valid_fw_id(const char* const s, 7420 const char t) 7421 { 7422 return s && strlen(s) >= 8 && 7423 tpacpi_is_fw_digit(s[0]) && 7424 tpacpi_is_fw_digit(s[1]) && 7425 s[2] == t && s[3] == 'T' && 7426 tpacpi_is_fw_digit(s[4]) && 7427 tpacpi_is_fw_digit(s[5]) && 7428 s[6] == 'W' && s[7] == 'W'; 7429 } 7430 7431 /* returns 0 - probe ok, or < 0 - probe error. 7432 * Probe ok doesn't mean thinkpad found. 7433 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 7434 static int __must_check __init get_thinkpad_model_data( 7435 struct thinkpad_id_data *tp) 7436 { 7437 const struct dmi_device *dev = NULL; 7438 char ec_fw_string[18]; 7439 char const *s; 7440 7441 if (!tp) 7442 return -EINVAL; 7443 7444 memset(tp, 0, sizeof(*tp)); 7445 7446 if (dmi_name_in_vendors("IBM")) 7447 tp->vendor = PCI_VENDOR_ID_IBM; 7448 else if (dmi_name_in_vendors("LENOVO")) 7449 tp->vendor = PCI_VENDOR_ID_LENOVO; 7450 else 7451 return 0; 7452 7453 s = dmi_get_system_info(DMI_BIOS_VERSION); 7454 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 7455 if (s && !tp->bios_version_str) 7456 return -ENOMEM; 7457 7458 /* Really ancient ThinkPad 240X will fail this, which is fine */ 7459 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E')) 7460 return 0; 7461 7462 tp->bios_model = tp->bios_version_str[0] 7463 | (tp->bios_version_str[1] << 8); 7464 tp->bios_release = (tp->bios_version_str[4] << 8) 7465 | tp->bios_version_str[5]; 7466 7467 /* 7468 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 7469 * X32 or newer, all Z series; Some models must have an 7470 * up-to-date BIOS or they will not be detected. 7471 * 7472 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 7473 */ 7474 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 7475 if (sscanf(dev->name, 7476 "IBM ThinkPad Embedded Controller -[%17c", 7477 ec_fw_string) == 1) { 7478 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 7479 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 7480 7481 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 7482 if (!tp->ec_version_str) 7483 return -ENOMEM; 7484 7485 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { 7486 tp->ec_model = ec_fw_string[0] 7487 | (ec_fw_string[1] << 8); 7488 tp->ec_release = (ec_fw_string[4] << 8) 7489 | ec_fw_string[5]; 7490 } else { 7491 printk(TPACPI_NOTICE 7492 "ThinkPad firmware release %s " 7493 "doesn't match the known patterns\n", 7494 ec_fw_string); 7495 printk(TPACPI_NOTICE 7496 "please report this to %s\n", 7497 TPACPI_MAIL); 7498 } 7499 break; 7500 } 7501 } 7502 7503 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 7504 if (s && !strnicmp(s, "ThinkPad", 8)) { 7505 tp->model_str = kstrdup(s, GFP_KERNEL); 7506 if (!tp->model_str) 7507 return -ENOMEM; 7508 } 7509 7510 s = dmi_get_system_info(DMI_PRODUCT_NAME); 7511 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 7512 if (s && !tp->nummodel_str) 7513 return -ENOMEM; 7514 7515 return 0; 7516 } 7517 7518 static int __init probe_for_thinkpad(void) 7519 { 7520 int is_thinkpad; 7521 7522 if (acpi_disabled) 7523 return -ENODEV; 7524 7525 /* 7526 * Non-ancient models have better DMI tagging, but very old models 7527 * don't. 7528 */ 7529 is_thinkpad = (thinkpad_id.model_str != NULL); 7530 7531 /* ec is required because many other handles are relative to it */ 7532 TPACPI_ACPIHANDLE_INIT(ec); 7533 if (!ec_handle) { 7534 if (is_thinkpad) 7535 printk(TPACPI_ERR 7536 "Not yet supported ThinkPad detected!\n"); 7537 return -ENODEV; 7538 } 7539 7540 /* 7541 * Risks a regression on very old machines, but reduces potential 7542 * false positives a damn great deal 7543 */ 7544 if (!is_thinkpad) 7545 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM); 7546 7547 if (!is_thinkpad && !force_load) 7548 return -ENODEV; 7549 7550 return 0; 7551 } 7552 7553 7554 /* Module init, exit, parameters */ 7555 7556 static struct ibm_init_struct ibms_init[] __initdata = { 7557 { 7558 .init = thinkpad_acpi_driver_init, 7559 .data = &thinkpad_acpi_driver_data, 7560 }, 7561 { 7562 .init = hotkey_init, 7563 .data = &hotkey_driver_data, 7564 }, 7565 { 7566 .init = bluetooth_init, 7567 .data = &bluetooth_driver_data, 7568 }, 7569 { 7570 .init = wan_init, 7571 .data = &wan_driver_data, 7572 }, 7573 { 7574 .init = uwb_init, 7575 .data = &uwb_driver_data, 7576 }, 7577 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 7578 { 7579 .init = video_init, 7580 .data = &video_driver_data, 7581 }, 7582 #endif 7583 { 7584 .init = light_init, 7585 .data = &light_driver_data, 7586 }, 7587 { 7588 .init = cmos_init, 7589 .data = &cmos_driver_data, 7590 }, 7591 { 7592 .init = led_init, 7593 .data = &led_driver_data, 7594 }, 7595 { 7596 .init = beep_init, 7597 .data = &beep_driver_data, 7598 }, 7599 { 7600 .init = thermal_init, 7601 .data = &thermal_driver_data, 7602 }, 7603 { 7604 .data = &ecdump_driver_data, 7605 }, 7606 { 7607 .init = brightness_init, 7608 .data = &brightness_driver_data, 7609 }, 7610 { 7611 .data = &volume_driver_data, 7612 }, 7613 { 7614 .init = fan_init, 7615 .data = &fan_driver_data, 7616 }, 7617 }; 7618 7619 static int __init set_ibm_param(const char *val, struct kernel_param *kp) 7620 { 7621 unsigned int i; 7622 struct ibm_struct *ibm; 7623 7624 if (!kp || !kp->name || !val) 7625 return -EINVAL; 7626 7627 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 7628 ibm = ibms_init[i].data; 7629 WARN_ON(ibm == NULL); 7630 7631 if (!ibm || !ibm->name) 7632 continue; 7633 7634 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 7635 if (strlen(val) > sizeof(ibms_init[i].param) - 2) 7636 return -ENOSPC; 7637 strcpy(ibms_init[i].param, val); 7638 strcat(ibms_init[i].param, ","); 7639 return 0; 7640 } 7641 } 7642 7643 return -EINVAL; 7644 } 7645 7646 module_param(experimental, int, 0); 7647 MODULE_PARM_DESC(experimental, 7648 "Enables experimental features when non-zero"); 7649 7650 module_param_named(debug, dbg_level, uint, 0); 7651 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 7652 7653 module_param(force_load, bool, 0); 7654 MODULE_PARM_DESC(force_load, 7655 "Attempts to load the driver even on a " 7656 "mis-identified ThinkPad when true"); 7657 7658 module_param_named(fan_control, fan_control_allowed, bool, 0); 7659 MODULE_PARM_DESC(fan_control, 7660 "Enables setting fan parameters features when true"); 7661 7662 module_param_named(brightness_mode, brightness_mode, uint, 0); 7663 MODULE_PARM_DESC(brightness_mode, 7664 "Selects brightness control strategy: " 7665 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 7666 7667 module_param(brightness_enable, uint, 0); 7668 MODULE_PARM_DESC(brightness_enable, 7669 "Enables backlight control when 1, disables when 0"); 7670 7671 module_param(hotkey_report_mode, uint, 0); 7672 MODULE_PARM_DESC(hotkey_report_mode, 7673 "used for backwards compatibility with userspace, " 7674 "see documentation"); 7675 7676 #define TPACPI_PARAM(feature) \ 7677 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 7678 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ 7679 "at module load, see documentation") 7680 7681 TPACPI_PARAM(hotkey); 7682 TPACPI_PARAM(bluetooth); 7683 TPACPI_PARAM(video); 7684 TPACPI_PARAM(light); 7685 TPACPI_PARAM(cmos); 7686 TPACPI_PARAM(led); 7687 TPACPI_PARAM(beep); 7688 TPACPI_PARAM(ecdump); 7689 TPACPI_PARAM(brightness); 7690 TPACPI_PARAM(volume); 7691 TPACPI_PARAM(fan); 7692 7693 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 7694 module_param(dbg_wlswemul, uint, 0); 7695 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 7696 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 7697 MODULE_PARM_DESC(wlsw_state, 7698 "Initial state of the emulated WLSW switch"); 7699 7700 module_param(dbg_bluetoothemul, uint, 0); 7701 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 7702 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 7703 MODULE_PARM_DESC(bluetooth_state, 7704 "Initial state of the emulated bluetooth switch"); 7705 7706 module_param(dbg_wwanemul, uint, 0); 7707 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 7708 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 7709 MODULE_PARM_DESC(wwan_state, 7710 "Initial state of the emulated WWAN switch"); 7711 7712 module_param(dbg_uwbemul, uint, 0); 7713 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 7714 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 7715 MODULE_PARM_DESC(uwb_state, 7716 "Initial state of the emulated UWB switch"); 7717 #endif 7718 7719 static void thinkpad_acpi_module_exit(void) 7720 { 7721 struct ibm_struct *ibm, *itmp; 7722 7723 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 7724 7725 list_for_each_entry_safe_reverse(ibm, itmp, 7726 &tpacpi_all_drivers, 7727 all_drivers) { 7728 ibm_exit(ibm); 7729 } 7730 7731 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 7732 7733 if (tpacpi_inputdev) { 7734 if (tp_features.input_device_registered) 7735 input_unregister_device(tpacpi_inputdev); 7736 else 7737 input_free_device(tpacpi_inputdev); 7738 } 7739 7740 if (tpacpi_hwmon) 7741 hwmon_device_unregister(tpacpi_hwmon); 7742 7743 if (tp_features.sensors_pdev_attrs_registered) 7744 device_remove_file(&tpacpi_sensors_pdev->dev, 7745 &dev_attr_thinkpad_acpi_pdev_name); 7746 if (tpacpi_sensors_pdev) 7747 platform_device_unregister(tpacpi_sensors_pdev); 7748 if (tpacpi_pdev) 7749 platform_device_unregister(tpacpi_pdev); 7750 7751 if (tp_features.sensors_pdrv_attrs_registered) 7752 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 7753 if (tp_features.platform_drv_attrs_registered) 7754 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 7755 7756 if (tp_features.sensors_pdrv_registered) 7757 platform_driver_unregister(&tpacpi_hwmon_pdriver); 7758 7759 if (tp_features.platform_drv_registered) 7760 platform_driver_unregister(&tpacpi_pdriver); 7761 7762 if (proc_dir) 7763 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 7764 7765 if (tpacpi_wq) 7766 destroy_workqueue(tpacpi_wq); 7767 7768 kfree(thinkpad_id.bios_version_str); 7769 kfree(thinkpad_id.ec_version_str); 7770 kfree(thinkpad_id.model_str); 7771 } 7772 7773 7774 static int __init thinkpad_acpi_module_init(void) 7775 { 7776 int ret, i; 7777 7778 tpacpi_lifecycle = TPACPI_LIFE_INIT; 7779 7780 /* Parameter checking */ 7781 if (hotkey_report_mode > 2) 7782 return -EINVAL; 7783 7784 /* Driver-level probe */ 7785 7786 ret = get_thinkpad_model_data(&thinkpad_id); 7787 if (ret) { 7788 printk(TPACPI_ERR 7789 "unable to get DMI data: %d\n", ret); 7790 thinkpad_acpi_module_exit(); 7791 return ret; 7792 } 7793 ret = probe_for_thinkpad(); 7794 if (ret) { 7795 thinkpad_acpi_module_exit(); 7796 return ret; 7797 } 7798 7799 /* Driver initialization */ 7800 7801 TPACPI_ACPIHANDLE_INIT(ecrd); 7802 TPACPI_ACPIHANDLE_INIT(ecwr); 7803 7804 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 7805 if (!tpacpi_wq) { 7806 thinkpad_acpi_module_exit(); 7807 return -ENOMEM; 7808 } 7809 7810 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 7811 if (!proc_dir) { 7812 printk(TPACPI_ERR 7813 "unable to create proc dir " TPACPI_PROC_DIR); 7814 thinkpad_acpi_module_exit(); 7815 return -ENODEV; 7816 } 7817 7818 ret = platform_driver_register(&tpacpi_pdriver); 7819 if (ret) { 7820 printk(TPACPI_ERR 7821 "unable to register main platform driver\n"); 7822 thinkpad_acpi_module_exit(); 7823 return ret; 7824 } 7825 tp_features.platform_drv_registered = 1; 7826 7827 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 7828 if (ret) { 7829 printk(TPACPI_ERR 7830 "unable to register hwmon platform driver\n"); 7831 thinkpad_acpi_module_exit(); 7832 return ret; 7833 } 7834 tp_features.sensors_pdrv_registered = 1; 7835 7836 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 7837 if (!ret) { 7838 tp_features.platform_drv_attrs_registered = 1; 7839 ret = tpacpi_create_driver_attributes( 7840 &tpacpi_hwmon_pdriver.driver); 7841 } 7842 if (ret) { 7843 printk(TPACPI_ERR 7844 "unable to create sysfs driver attributes\n"); 7845 thinkpad_acpi_module_exit(); 7846 return ret; 7847 } 7848 tp_features.sensors_pdrv_attrs_registered = 1; 7849 7850 7851 /* Device initialization */ 7852 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 7853 NULL, 0); 7854 if (IS_ERR(tpacpi_pdev)) { 7855 ret = PTR_ERR(tpacpi_pdev); 7856 tpacpi_pdev = NULL; 7857 printk(TPACPI_ERR "unable to register platform device\n"); 7858 thinkpad_acpi_module_exit(); 7859 return ret; 7860 } 7861 tpacpi_sensors_pdev = platform_device_register_simple( 7862 TPACPI_HWMON_DRVR_NAME, 7863 -1, NULL, 0); 7864 if (IS_ERR(tpacpi_sensors_pdev)) { 7865 ret = PTR_ERR(tpacpi_sensors_pdev); 7866 tpacpi_sensors_pdev = NULL; 7867 printk(TPACPI_ERR 7868 "unable to register hwmon platform device\n"); 7869 thinkpad_acpi_module_exit(); 7870 return ret; 7871 } 7872 ret = device_create_file(&tpacpi_sensors_pdev->dev, 7873 &dev_attr_thinkpad_acpi_pdev_name); 7874 if (ret) { 7875 printk(TPACPI_ERR 7876 "unable to create sysfs hwmon device attributes\n"); 7877 thinkpad_acpi_module_exit(); 7878 return ret; 7879 } 7880 tp_features.sensors_pdev_attrs_registered = 1; 7881 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); 7882 if (IS_ERR(tpacpi_hwmon)) { 7883 ret = PTR_ERR(tpacpi_hwmon); 7884 tpacpi_hwmon = NULL; 7885 printk(TPACPI_ERR "unable to register hwmon device\n"); 7886 thinkpad_acpi_module_exit(); 7887 return ret; 7888 } 7889 mutex_init(&tpacpi_inputdev_send_mutex); 7890 tpacpi_inputdev = input_allocate_device(); 7891 if (!tpacpi_inputdev) { 7892 printk(TPACPI_ERR "unable to allocate input device\n"); 7893 thinkpad_acpi_module_exit(); 7894 return -ENOMEM; 7895 } else { 7896 /* Prepare input device, but don't register */ 7897 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 7898 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 7899 tpacpi_inputdev->id.bustype = BUS_HOST; 7900 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? 7901 thinkpad_id.vendor : 7902 PCI_VENDOR_ID_IBM; 7903 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 7904 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 7905 } 7906 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 7907 ret = ibm_init(&ibms_init[i]); 7908 if (ret >= 0 && *ibms_init[i].param) 7909 ret = ibms_init[i].data->write(ibms_init[i].param); 7910 if (ret < 0) { 7911 thinkpad_acpi_module_exit(); 7912 return ret; 7913 } 7914 } 7915 ret = input_register_device(tpacpi_inputdev); 7916 if (ret < 0) { 7917 printk(TPACPI_ERR "unable to register input device\n"); 7918 thinkpad_acpi_module_exit(); 7919 return ret; 7920 } else { 7921 tp_features.input_device_registered = 1; 7922 } 7923 7924 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 7925 return 0; 7926 } 7927 7928 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 7929 7930 /* 7931 * This will autoload the driver in almost every ThinkPad 7932 * in widespread use. 7933 * 7934 * Only _VERY_ old models, like the 240, 240x and 570 lack 7935 * the HKEY event interface. 7936 */ 7937 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 7938 7939 /* 7940 * DMI matching for module autoloading 7941 * 7942 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 7943 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 7944 * 7945 * Only models listed in thinkwiki will be supported, so add yours 7946 * if it is not there yet. 7947 */ 7948 #define IBM_BIOS_MODULE_ALIAS(__type) \ 7949 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 7950 7951 /* Ancient thinkpad BIOSes have to be identified by 7952 * BIOS type or model number, and there are far less 7953 * BIOS types than model numbers... */ 7954 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 7955 7956 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 7957 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 7958 MODULE_DESCRIPTION(TPACPI_DESC); 7959 MODULE_VERSION(TPACPI_VERSION); 7960 MODULE_LICENSE("GPL"); 7961 7962 module_init(thinkpad_acpi_module_init); 7963 module_exit(thinkpad_acpi_module_exit); 7964