thinkpad_acpi.c revision 1.9
1 /* $NetBSD: thinkpad_acpi.c,v 1.9 2007/12/22 18:38:13 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Jared D. McNeill. 18 * 4. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: thinkpad_acpi.c,v 1.9 2007/12/22 18:38:13 jmcneill Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/malloc.h> 41 #include <sys/buf.h> 42 #include <sys/callout.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/pmf.h> 46 #include <sys/queue.h> 47 #include <sys/kmem.h> 48 49 #include <dev/acpi/acpivar.h> 50 #include <dev/acpi/acpi_ecvar.h> 51 52 #if defined(__i386__) || defined(__amd64__) 53 #include <machine/pio.h> 54 #endif 55 56 #define THINKPAD_NSENSORS 8 57 58 typedef struct thinkpad_softc { 59 device_t sc_dev; 60 device_t sc_ecdev; 61 struct acpi_devnode *sc_node; 62 ACPI_HANDLE sc_cmoshdl; 63 bool sc_cmoshdl_valid; 64 65 #define TP_PSW_SLEEP 0 66 #define TP_PSW_HIBERNATE 1 67 #define TP_PSW_DISPLAY_CYCLE 2 68 #define TP_PSW_LOCK_SCREEN 3 69 #define TP_PSW_BATTERY_INFO 4 70 #define TP_PSW_EJECT_BUTTON 5 71 #define TP_PSW_ZOOM_BUTTON 6 72 #define TP_PSW_VENDOR_BUTTON 7 73 #define TP_PSW_LAST 8 74 struct sysmon_pswitch sc_smpsw[TP_PSW_LAST]; 75 bool sc_smpsw_valid; 76 77 struct sysmon_envsys *sc_sme; 78 envsys_data_t sc_sensor[THINKPAD_NSENSORS]; 79 80 int sc_display_state; 81 } thinkpad_softc_t; 82 83 /* Hotkey events */ 84 #define THINKPAD_NOTIFY_FnF1 0x001 85 #define THINKPAD_NOTIFY_LockScreen 0x002 86 #define THINKPAD_NOTIFY_BatteryInfo 0x003 87 #define THINKPAD_NOTIFY_SleepButton 0x004 88 #define THINKPAD_NOTIFY_WirelessSwitch 0x005 89 #define THINKPAD_NOTIFY_FnF6 0x006 90 #define THINKPAD_NOTIFY_DisplayCycle 0x007 91 #define THINKPAD_NOTIFY_PointerSwitch 0x008 92 #define THINKPAD_NOTIFY_EjectButton 0x009 93 #define THINKPAD_NOTIFY_FnF10 0x00a 94 #define THINKPAD_NOTIFY_FnF11 0x00b 95 #define THINKPAD_NOTIFY_HibernateButton 0x00c 96 #define THINKPAD_NOTIFY_BrightnessUp 0x010 97 #define THINKPAD_NOTIFY_BrightnessDown 0x011 98 #define THINKPAD_NOTIFY_ThinkLight 0x012 99 #define THINKPAD_NOTIFY_Zoom 0x014 100 #define THINKPAD_NOTIFY_ThinkVantage 0x018 101 102 #define THINKPAD_CMOS_BRIGHTNESS_UP 0x04 103 #define THINKPAD_CMOS_BRIGHTNESS_DOWN 0x05 104 105 #define THINKPAD_HKEY_VERSION 0x0100 106 107 #define THINKPAD_DISPLAY_LCD 0x01 108 #define THINKPAD_DISPLAY_CRT 0x02 109 #define THINKPAD_DISPLAY_DVI 0x08 110 #define THINKPAD_DISPLAY_ALL \ 111 (THINKPAD_DISPLAY_LCD | THINKPAD_DISPLAY_CRT | THINKPAD_DISPLAY_DVI) 112 113 static int thinkpad_match(device_t, struct cfdata *, void *); 114 static void thinkpad_attach(device_t, device_t, void *); 115 116 static ACPI_STATUS thinkpad_mask_init(thinkpad_softc_t *, uint32_t); 117 static void thinkpad_notify_handler(ACPI_HANDLE, UINT32, void *); 118 static void thinkpad_get_hotkeys(void *); 119 120 static void thinkpad_temp_init(thinkpad_softc_t *); 121 static void thinkpad_temp_refresh(struct sysmon_envsys *, envsys_data_t *); 122 123 static void thinkpad_wireless_toggle(thinkpad_softc_t *); 124 125 static void thinkpad_brightness_up(device_t); 126 static void thinkpad_brightness_down(device_t); 127 static uint8_t thinkpad_brightness_read(thinkpad_softc_t *sc); 128 static void thinkpad_cmos(thinkpad_softc_t *, uint8_t); 129 130 CFATTACH_DECL_NEW(thinkpad, sizeof(thinkpad_softc_t), 131 thinkpad_match, thinkpad_attach, NULL, NULL); 132 133 static const char * const thinkpad_ids[] = { 134 "IBM0068", 135 NULL 136 }; 137 138 static int 139 thinkpad_match(device_t parent, struct cfdata *match, void *opaque) 140 { 141 struct acpi_attach_args *aa = (struct acpi_attach_args *)opaque; 142 ACPI_HANDLE hdl; 143 ACPI_INTEGER ver; 144 145 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 146 return 0; 147 148 if (!acpi_match_hid(aa->aa_node->ad_devinfo, thinkpad_ids)) 149 return 0; 150 151 /* No point in attaching if we can't find the CMOS method */ 152 if (ACPI_FAILURE(AcpiGetHandle(NULL, "\\UCMS", &hdl))) 153 return 0; 154 155 /* We only support hotkey version 0x0100 */ 156 if (ACPI_FAILURE(acpi_eval_integer(aa->aa_node->ad_handle, "MHKV", 157 &ver))) 158 return 0; 159 160 if (ver != THINKPAD_HKEY_VERSION) 161 return 0; 162 163 /* Cool, looks like we're good to go */ 164 return 1; 165 } 166 167 static void 168 thinkpad_attach(device_t parent, device_t self, void *opaque) 169 { 170 thinkpad_softc_t *sc = device_private(self); 171 struct acpi_attach_args *aa = (struct acpi_attach_args *)opaque; 172 struct sysmon_pswitch *psw; 173 device_t curdev; 174 ACPI_STATUS rv; 175 ACPI_INTEGER val; 176 int i; 177 178 sc->sc_node = aa->aa_node; 179 sc->sc_dev = self; 180 sc->sc_display_state = THINKPAD_DISPLAY_LCD; 181 182 aprint_naive("\n"); 183 aprint_normal("\n"); 184 185 /* T61 uses \UCMS method for issuing CMOS commands */ 186 rv = AcpiGetHandle(NULL, "\\UCMS", &sc->sc_cmoshdl); 187 if (ACPI_FAILURE(rv)) 188 sc->sc_cmoshdl_valid = false; 189 else { 190 aprint_verbose_dev(self, "using CMOS at \\UCMS\n"); 191 sc->sc_cmoshdl_valid = true; 192 } 193 194 sc->sc_ecdev = NULL; 195 TAILQ_FOREACH(curdev, &alldevs, dv_list) 196 if (device_is_a(curdev, "acpiecdt") || 197 device_is_a(curdev, "acpiec")) { 198 sc->sc_ecdev = curdev; 199 break; 200 } 201 if (sc->sc_ecdev) 202 aprint_verbose_dev(self, "using EC at %s\n", 203 device_xname(sc->sc_ecdev)); 204 205 /* Get the supported event mask */ 206 rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKA", &val); 207 if (ACPI_FAILURE(rv)) { 208 aprint_error_dev(self, "couldn't evaluate MHKA: %s\n", 209 AcpiFormatException(rv)); 210 goto fail; 211 } 212 213 /* Enable all supported events */ 214 rv = thinkpad_mask_init(sc, val); 215 if (ACPI_FAILURE(rv)) { 216 aprint_error_dev(self, "couldn't set event mask: %s\n", 217 AcpiFormatException(rv)); 218 goto fail; 219 } 220 221 /* Install notify handler for events */ 222 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 223 ACPI_DEVICE_NOTIFY, thinkpad_notify_handler, sc); 224 if (ACPI_FAILURE(rv)) 225 aprint_error_dev(self, "couldn't install notify handler: %s\n", 226 AcpiFormatException(rv)); 227 228 /* Register power switches with sysmon */ 229 psw = sc->sc_smpsw; 230 sc->sc_smpsw_valid = true; 231 232 psw[TP_PSW_SLEEP].smpsw_name = device_xname(self); 233 psw[TP_PSW_SLEEP].smpsw_type = PSWITCH_TYPE_SLEEP; 234 #if notyet 235 psw[TP_PSW_HIBERNATE].smpsw_name = device_xname(self); 236 mpsw[TP_PSW_HIBERNATE].smpsw_type = PSWITCH_TYPE_HIBERNATE; 237 #endif 238 for (i = TP_PSW_DISPLAY_CYCLE; i < TP_PSW_LAST; i++) 239 sc->sc_smpsw[i].smpsw_type = PSWITCH_TYPE_HOTKEY; 240 psw[TP_PSW_DISPLAY_CYCLE].smpsw_name = PSWITCH_HK_DISPLAY_CYCLE; 241 psw[TP_PSW_LOCK_SCREEN].smpsw_name = PSWITCH_HK_LOCK_SCREEN; 242 psw[TP_PSW_BATTERY_INFO].smpsw_name = PSWITCH_HK_BATTERY_INFO; 243 psw[TP_PSW_EJECT_BUTTON].smpsw_name = PSWITCH_HK_EJECT_BUTTON; 244 psw[TP_PSW_ZOOM_BUTTON].smpsw_name = PSWITCH_HK_ZOOM_BUTTON; 245 psw[TP_PSW_VENDOR_BUTTON].smpsw_name = PSWITCH_HK_VENDOR_BUTTON; 246 247 for (i = 0; i < TP_PSW_LAST; i++) { 248 /* not supported yet */ 249 if (i == TP_PSW_HIBERNATE) 250 continue; 251 if (sysmon_pswitch_register(&sc->sc_smpsw[i]) != 0) { 252 aprint_error_dev(self, 253 "couldn't register with sysmon\n"); 254 sc->sc_smpsw_valid = false; 255 break; 256 } 257 } 258 259 /* Register temperature sensors with envsys */ 260 thinkpad_temp_init(sc); 261 262 fail: 263 if (!pmf_device_register(self, NULL, NULL)) 264 aprint_error_dev(self, "couldn't establish power handler\n"); 265 if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_UP, 266 thinkpad_brightness_up, true)) 267 aprint_error_dev(self, "couldn't register event handler\n"); 268 if (!pmf_event_register(self, PMFE_DISPLAY_BRIGHTNESS_DOWN, 269 thinkpad_brightness_down, true)) 270 aprint_error_dev(self, "couldn't register event handler\n"); 271 272 return; 273 } 274 275 static void 276 thinkpad_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 277 { 278 thinkpad_softc_t *sc = (thinkpad_softc_t *)opaque; 279 device_t self = sc->sc_dev; 280 ACPI_STATUS rv; 281 282 if (notify != 0x80) { 283 aprint_debug_dev(self, "unknown notify 0x%02x\n", notify); 284 return; 285 } 286 287 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, thinkpad_get_hotkeys, sc); 288 if (ACPI_FAILURE(rv)) 289 aprint_error_dev(self, "couldn't queue hotkey handler: %s\n", 290 AcpiFormatException(rv)); 291 } 292 293 static void 294 thinkpad_get_hotkeys(void *opaque) 295 { 296 thinkpad_softc_t *sc = (thinkpad_softc_t *)opaque; 297 device_t self = sc->sc_dev; 298 ACPI_STATUS rv; 299 ACPI_INTEGER val; 300 int type, event; 301 302 for (;;) { 303 rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKP", &val); 304 if (ACPI_FAILURE(rv)) { 305 aprint_error_dev(self, "couldn't evaluate MHKP: %s\n", 306 AcpiFormatException(rv)); 307 return; 308 } 309 310 if (val == 0) 311 return; 312 313 type = (val & 0xf000) >> 12; 314 event = val & 0x0fff; 315 316 if (type != 1) 317 /* Only type 1 events are supported for now */ 318 continue; 319 320 switch (event) { 321 case THINKPAD_NOTIFY_BrightnessUp: 322 thinkpad_brightness_up(self); 323 break; 324 case THINKPAD_NOTIFY_BrightnessDown: 325 thinkpad_brightness_down(self); 326 break; 327 case THINKPAD_NOTIFY_WirelessSwitch: 328 thinkpad_wireless_toggle(sc); 329 break; 330 case THINKPAD_NOTIFY_SleepButton: 331 if (sc->sc_smpsw_valid == false) 332 break; 333 sysmon_pswitch_event(&sc->sc_smpsw[TP_PSW_SLEEP], 334 PSWITCH_EVENT_PRESSED); 335 break; 336 case THINKPAD_NOTIFY_HibernateButton: 337 #if notyet 338 if (sc->sc_smpsw_valid == false) 339 break; 340 sysmon_pswitch_event(&sc->sc_smpsw[TP_PSW_HIBERNATE], 341 PSWITCH_EVENT_PRESSED); 342 #endif 343 break; 344 case THINKPAD_NOTIFY_DisplayCycle: 345 if (sc->sc_smpsw_valid == false) 346 break; 347 sysmon_pswitch_event( 348 &sc->sc_smpsw[TP_PSW_DISPLAY_CYCLE], 349 PSWITCH_EVENT_PRESSED); 350 break; 351 case THINKPAD_NOTIFY_LockScreen: 352 if (sc->sc_smpsw_valid == false) 353 break; 354 sysmon_pswitch_event( 355 &sc->sc_smpsw[TP_PSW_LOCK_SCREEN], 356 PSWITCH_EVENT_PRESSED); 357 break; 358 case THINKPAD_NOTIFY_BatteryInfo: 359 if (sc->sc_smpsw_valid == false) 360 break; 361 sysmon_pswitch_event( 362 &sc->sc_smpsw[TP_PSW_BATTERY_INFO], 363 PSWITCH_EVENT_PRESSED); 364 break; 365 case THINKPAD_NOTIFY_EjectButton: 366 if (sc->sc_smpsw_valid == false) 367 break; 368 sysmon_pswitch_event( 369 &sc->sc_smpsw[TP_PSW_EJECT_BUTTON], 370 PSWITCH_EVENT_PRESSED); 371 break; 372 case THINKPAD_NOTIFY_Zoom: 373 if (sc->sc_smpsw_valid == false) 374 break; 375 sysmon_pswitch_event( 376 &sc->sc_smpsw[TP_PSW_ZOOM_BUTTON], 377 PSWITCH_EVENT_PRESSED); 378 break; 379 case THINKPAD_NOTIFY_ThinkVantage: 380 if (sc->sc_smpsw_valid == false) 381 break; 382 sysmon_pswitch_event( 383 &sc->sc_smpsw[TP_PSW_VENDOR_BUTTON], 384 PSWITCH_EVENT_PRESSED); 385 break; 386 case THINKPAD_NOTIFY_FnF1: 387 case THINKPAD_NOTIFY_FnF6: 388 case THINKPAD_NOTIFY_PointerSwitch: 389 case THINKPAD_NOTIFY_FnF10: 390 case THINKPAD_NOTIFY_FnF11: 391 case THINKPAD_NOTIFY_ThinkLight: 392 /* XXXJDM we should deliver hotkeys as keycodes */ 393 break; 394 default: 395 aprint_debug_dev(self, "notify event 0x%03x\n", event); 396 break; 397 } 398 } 399 400 return; 401 } 402 403 static ACPI_STATUS 404 thinkpad_mask_init(thinkpad_softc_t *sc, uint32_t mask) 405 { 406 ACPI_OBJECT param[2]; 407 ACPI_OBJECT_LIST params; 408 ACPI_STATUS rv; 409 int i; 410 411 /* Update hotkey mask */ 412 params.Count = 2; 413 params.Pointer = param; 414 param[0].Type = param[1].Type = ACPI_TYPE_INTEGER; 415 416 for (i = 0; i < 32; i++) { 417 param[0].Integer.Value = i + 1; 418 param[1].Integer.Value = (((1 << i) & mask) != 0); 419 420 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "MHKM", 421 ¶ms, NULL); 422 if (ACPI_FAILURE(rv)) 423 return rv; 424 } 425 426 /* Enable hotkey events */ 427 params.Count = 1; 428 param[0].Integer.Value = 1; 429 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "MHKC", ¶ms, NULL); 430 if (ACPI_FAILURE(rv)) { 431 aprint_error_dev(sc->sc_dev, "couldn't enable hotkeys: %s\n", 432 AcpiFormatException(rv)); 433 return rv; 434 } 435 436 /* Claim ownership of brightness control */ 437 param[0].Integer.Value = 0; 438 (void)AcpiEvaluateObject(sc->sc_node->ad_handle, "PWMS", ¶ms, NULL); 439 440 return AE_OK; 441 } 442 443 static void 444 thinkpad_temp_init(thinkpad_softc_t *sc) 445 { 446 char sname[5] = "TMP?"; 447 int i, err; 448 449 if (sc->sc_ecdev == NULL) 450 return; /* no chance of this working */ 451 452 sc->sc_sme = sysmon_envsys_create(); 453 for (i = 0; i < THINKPAD_NSENSORS; i++) { 454 sname[3] = '0' + i; 455 strcpy(sc->sc_sensor[i].desc, sname); 456 sc->sc_sensor[i].units = ENVSYS_STEMP; 457 458 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor[i])) 459 aprint_error_dev(sc->sc_dev, 460 "couldn't attach sensor %s\n", sname); 461 } 462 463 sc->sc_sme->sme_name = device_xname(sc->sc_dev); 464 sc->sc_sme->sme_cookie = sc; 465 sc->sc_sme->sme_refresh = thinkpad_temp_refresh; 466 467 err = sysmon_envsys_register(sc->sc_sme); 468 if (err) { 469 aprint_error_dev(sc->sc_dev, 470 "couldn't register with sysmon: %d\n", err); 471 sysmon_envsys_destroy(sc->sc_sme); 472 } 473 } 474 475 static void 476 thinkpad_temp_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 477 { 478 thinkpad_softc_t *sc = sme->sme_cookie; 479 char sname[5] = "TMP?"; 480 ACPI_INTEGER val; 481 ACPI_STATUS rv; 482 int temp; 483 484 sname[3] = '0' + edata->sensor; 485 rv = acpi_eval_integer(acpiec_get_handle(sc->sc_ecdev), sname, &val); 486 if (ACPI_FAILURE(rv)) { 487 edata->state = ENVSYS_SINVALID; 488 return; 489 } 490 temp = (int)val; 491 if (temp > 127 || temp < -127) { 492 edata->state = ENVSYS_SINVALID; 493 return; 494 } 495 496 edata->value_cur = temp * 1000000 + 273150000; 497 edata->state = ENVSYS_SVALID; 498 } 499 500 static void 501 thinkpad_wireless_toggle(thinkpad_softc_t *sc) 502 { 503 /* Ignore return value, as the hardware may not support bluetooth */ 504 (void)AcpiEvaluateObject(sc->sc_node->ad_handle, "BTGL", NULL, NULL); 505 } 506 507 static uint8_t 508 thinkpad_brightness_read(thinkpad_softc_t *sc) 509 { 510 #if defined(__i386__) || defined(__amd64__) 511 /* 512 * We have two ways to get the current brightness -- either via 513 * magic RTC registers, or using the EC. Since I don't dare mess 514 * with the EC, and Thinkpads are x86-only, this will have to do 515 * for now. 516 */ 517 outb(0x70, 0x6c); 518 return inb(0x71) & 7; 519 #else 520 return 0; 521 #endif 522 } 523 524 static void 525 thinkpad_brightness_up(device_t self) 526 { 527 thinkpad_softc_t *sc = device_private(self); 528 529 if (thinkpad_brightness_read(sc) == 7) 530 return; 531 thinkpad_cmos(sc, THINKPAD_CMOS_BRIGHTNESS_UP); 532 } 533 534 static void 535 thinkpad_brightness_down(device_t self) 536 { 537 thinkpad_softc_t *sc = device_private(self); 538 539 if (thinkpad_brightness_read(sc) == 0) 540 return; 541 thinkpad_cmos(sc, THINKPAD_CMOS_BRIGHTNESS_DOWN); 542 } 543 544 static void 545 thinkpad_cmos(thinkpad_softc_t *sc, uint8_t cmd) 546 { 547 ACPI_OBJECT param; 548 ACPI_OBJECT_LIST params; 549 ACPI_STATUS rv; 550 551 if (sc->sc_cmoshdl_valid == false) 552 return; 553 554 params.Count = 1; 555 params.Pointer = ¶m; 556 param.Type = ACPI_TYPE_INTEGER; 557 param.Integer.Value = cmd; 558 rv = AcpiEvaluateObject(sc->sc_cmoshdl, NULL, ¶ms, NULL); 559 if (ACPI_FAILURE(rv)) 560 aprint_error_dev(sc->sc_dev, "couldn't evalute CMOS: %s\n", 561 AcpiFormatException(rv)); 562 } 563
Indexes created Wed Oct 01 19:09:53 GMT 2025