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sys/dev/acpica/acpi_video.c
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1 /*- 2 * Copyright (c) 2002-2003 Taku YAMAMOTO <taku@cent.saitama-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD: releng/8.0/sys/dev/acpica/acpi_video.c 193530 2009-06-05 18:44:36Z jkim $"); 31 32 #include <sys/param.h> 33 #include <sys/kernel.h> 34 #include <sys/malloc.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/power.h> 38 #include <sys/queue.h> 39 #include <sys/sysctl.h> 40 41 #include <contrib/dev/acpica/include/acpi.h> 42 43 #include <dev/acpica/acpivar.h> 44 45 /* ACPI video extension driver. */ 46 struct acpi_video_output { 47 ACPI_HANDLE handle; 48 UINT32 adr; 49 STAILQ_ENTRY(acpi_video_output) vo_next; 50 struct { 51 int num; 52 STAILQ_ENTRY(acpi_video_output) next; 53 } vo_unit; 54 int vo_brightness; 55 int vo_fullpower; 56 int vo_economy; 57 int vo_numlevels; 58 int *vo_levels; 59 struct sysctl_ctx_list vo_sysctl_ctx; 60 struct sysctl_oid *vo_sysctl_tree; 61 }; 62 63 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 64 65 struct acpi_video_softc { 66 device_t device; 67 ACPI_HANDLE handle; 68 struct acpi_video_output_queue vid_outputs; 69 eventhandler_tag vid_pwr_evh; 70 }; 71 72 /* interfaces */ 73 static int acpi_video_modevent(struct module*, int, void *); 74 static void acpi_video_identify(driver_t *driver, device_t parent); 75 static int acpi_video_probe(device_t); 76 static int acpi_video_attach(device_t); 77 static int acpi_video_detach(device_t); 78 static int acpi_video_shutdown(device_t); 79 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 80 static void acpi_video_power_profile(void *); 81 static void acpi_video_bind_outputs(struct acpi_video_softc *); 82 static struct acpi_video_output *acpi_video_vo_init(UINT32); 83 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 84 static void acpi_video_vo_destroy(struct acpi_video_output *); 85 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 86 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 87 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 88 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 89 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 90 91 /* operations */ 92 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 93 static int vid_enum_outputs(ACPI_HANDLE, 94 void(*)(ACPI_HANDLE, UINT32, void *), void *); 95 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 96 static void vo_set_brightness(ACPI_HANDLE, int); 97 static UINT32 vo_get_device_status(ACPI_HANDLE); 98 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 99 static void vo_set_device_state(ACPI_HANDLE, UINT32); 100 101 /* events */ 102 #define VID_NOTIFY_SWITCHED 0x80 103 #define VID_NOTIFY_REPROBE 0x81 104 105 /* _DOS (Enable/Disable Output Switching) argument bits */ 106 #define DOS_SWITCH_MASK 3 107 #define DOS_SWITCH_BY_OSPM 0 108 #define DOS_SWITCH_BY_BIOS 1 109 #define DOS_SWITCH_LOCKED 2 110 #define DOS_BRIGHTNESS_BY_BIOS (1 << 2) 111 112 /* _DOD and subdev's _ADR */ 113 #define DOD_DEVID_MASK 0x0f00 114 #define DOD_DEVID_MASK_FULL 0xffff 115 #define DOD_DEVID_MASK_DISPIDX 0x000f 116 #define DOD_DEVID_MASK_DISPPORT 0x00f0 117 #define DOD_DEVID_MONITOR 0x0100 118 #define DOD_DEVID_LCD 0x0110 119 #define DOD_DEVID_TV 0x0200 120 #define DOD_DEVID_EXT 0x0300 121 #define DOD_DEVID_INTDFP 0x0400 122 #define DOD_BIOS (1 << 16) 123 #define DOD_NONVGA (1 << 17) 124 #define DOD_HEAD_ID_SHIFT 18 125 #define DOD_HEAD_ID_BITS 3 126 #define DOD_HEAD_ID_MASK \ 127 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 128 #define DOD_DEVID_SCHEME_STD (1 << 31) 129 130 /* _BCL related constants */ 131 #define BCL_FULLPOWER 0 132 #define BCL_ECONOMY 1 133 134 /* _DCS (Device Currrent Status) value bits and masks. */ 135 #define DCS_EXISTS (1 << 0) 136 #define DCS_ACTIVE (1 << 1) 137 #define DCS_READY (1 << 2) 138 #define DCS_FUNCTIONAL (1 << 3) 139 #define DCS_ATTACHED (1 << 4) 140 141 /* _DSS (Device Set Status) argument bits and masks. */ 142 #define DSS_INACTIVE 0 143 #define DSS_ACTIVE (1 << 0) 144 #define DSS_SETNEXT (1 << 30) 145 #define DSS_COMMIT (1 << 31) 146 147 static device_method_t acpi_video_methods[] = { 148 DEVMETHOD(device_identify, acpi_video_identify), 149 DEVMETHOD(device_probe, acpi_video_probe), 150 DEVMETHOD(device_attach, acpi_video_attach), 151 DEVMETHOD(device_detach, acpi_video_detach), 152 DEVMETHOD(device_shutdown, acpi_video_shutdown), 153 { 0, 0 } 154 }; 155 156 static driver_t acpi_video_driver = { 157 "acpi_video", 158 acpi_video_methods, 159 sizeof(struct acpi_video_softc), 160 }; 161 162 static devclass_t acpi_video_devclass; 163 164 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 165 acpi_video_modevent, NULL); 166 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 167 168 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 169 static struct sysctl_oid *acpi_video_sysctl_tree; 170 static struct acpi_video_output_queue crt_units, tv_units, 171 ext_units, lcd_units, other_units; 172 173 ACPI_SERIAL_DECL(video, "ACPI video"); 174 MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 175 176 static int 177 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 178 { 179 int err; 180 181 err = 0; 182 switch (evt) { 183 case MOD_LOAD: 184 sysctl_ctx_init(&acpi_video_sysctl_ctx); 185 STAILQ_INIT(&crt_units); 186 STAILQ_INIT(&tv_units); 187 STAILQ_INIT(&ext_units); 188 STAILQ_INIT(&lcd_units); 189 STAILQ_INIT(&other_units); 190 break; 191 case MOD_UNLOAD: 192 sysctl_ctx_free(&acpi_video_sysctl_ctx); 193 acpi_video_sysctl_tree = NULL; 194 break; 195 default: 196 err = EINVAL; 197 } 198 199 return (err); 200 } 201 202 static void 203 acpi_video_identify(driver_t *driver, device_t parent) 204 { 205 206 if (device_find_child(parent, "acpi_video", -1) == NULL) 207 device_add_child(parent, "acpi_video", -1); 208 } 209 210 static int 211 acpi_video_probe(device_t dev) 212 { 213 ACPI_HANDLE devh, h; 214 ACPI_OBJECT_TYPE t_dos; 215 216 devh = acpi_get_handle(dev); 217 if (acpi_disabled("video") || 218 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 219 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 220 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 221 t_dos != ACPI_TYPE_METHOD) 222 return (ENXIO); 223 224 device_set_desc(dev, "ACPI video extension"); 225 return (0); 226 } 227 228 static int 229 acpi_video_attach(device_t dev) 230 { 231 struct acpi_softc *acpi_sc; 232 struct acpi_video_softc *sc; 233 234 sc = device_get_softc(dev); 235 236 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 237 if (acpi_sc == NULL) 238 return (ENXIO); 239 if (acpi_video_sysctl_tree == NULL) { 240 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 241 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 242 OID_AUTO, "video", CTLFLAG_RD, 0, 243 "video extension control"); 244 } 245 246 sc->device = dev; 247 sc->handle = acpi_get_handle(dev); 248 STAILQ_INIT(&sc->vid_outputs); 249 250 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 251 acpi_video_notify_handler, sc); 252 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 253 acpi_video_power_profile, sc, 0); 254 255 ACPI_SERIAL_BEGIN(video); 256 acpi_video_bind_outputs(sc); 257 ACPI_SERIAL_END(video); 258 259 /* 260 * Notify the BIOS that we want to switch both active outputs and 261 * brightness levels. 262 */ 263 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 264 DOS_BRIGHTNESS_BY_BIOS); 265 266 acpi_video_power_profile(sc); 267 268 return (0); 269 } 270 271 static int 272 acpi_video_detach(device_t dev) 273 { 274 struct acpi_video_softc *sc; 275 struct acpi_video_output *vo, *vn; 276 277 sc = device_get_softc(dev); 278 279 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 280 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 281 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 282 acpi_video_notify_handler); 283 284 ACPI_SERIAL_BEGIN(video); 285 for (vo = STAILQ_FIRST(&sc->vid_outputs); vo != NULL; vo = vn) { 286 vn = STAILQ_NEXT(vo, vo_next); 287 acpi_video_vo_destroy(vo); 288 } 289 ACPI_SERIAL_END(video); 290 291 return (0); 292 } 293 294 static int 295 acpi_video_shutdown(device_t dev) 296 { 297 struct acpi_video_softc *sc; 298 299 sc = device_get_softc(dev); 300 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 301 302 return (0); 303 } 304 305 static void 306 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 307 { 308 struct acpi_video_softc *sc; 309 struct acpi_video_output *vo, *vo_tmp; 310 ACPI_HANDLE lasthand; 311 UINT32 dcs, dss, dss_p; 312 313 sc = (struct acpi_video_softc *)context; 314 315 switch (notify) { 316 case VID_NOTIFY_SWITCHED: 317 dss_p = 0; 318 lasthand = NULL; 319 ACPI_SERIAL_BEGIN(video); 320 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 321 dss = vo_get_graphics_state(vo->handle); 322 dcs = vo_get_device_status(vo->handle); 323 if (!(dcs & DCS_READY)) 324 dss = DSS_INACTIVE; 325 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 326 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 327 if (lasthand != NULL) 328 vo_set_device_state(lasthand, dss_p); 329 dss_p = dss; 330 lasthand = vo->handle; 331 } 332 } 333 if (lasthand != NULL) 334 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 335 ACPI_SERIAL_END(video); 336 break; 337 case VID_NOTIFY_REPROBE: 338 ACPI_SERIAL_BEGIN(video); 339 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 340 vo->handle = NULL; 341 acpi_video_bind_outputs(sc); 342 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 343 if (vo->handle == NULL) { 344 STAILQ_REMOVE(&sc->vid_outputs, vo, 345 acpi_video_output, vo_next); 346 acpi_video_vo_destroy(vo); 347 } 348 } 349 ACPI_SERIAL_END(video); 350 break; 351 default: 352 device_printf(sc->device, "unknown notify event 0x%x\n", 353 notify); 354 } 355 } 356 357 static void 358 acpi_video_power_profile(void *context) 359 { 360 int state; 361 struct acpi_video_softc *sc; 362 struct acpi_video_output *vo; 363 364 sc = context; 365 state = power_profile_get_state(); 366 if (state != POWER_PROFILE_PERFORMANCE && 367 state != POWER_PROFILE_ECONOMY) 368 return; 369 370 ACPI_SERIAL_BEGIN(video); 371 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 372 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 373 vo_set_brightness(vo->handle, 374 state == POWER_PROFILE_ECONOMY ? 375 vo->vo_economy : vo->vo_fullpower); 376 } 377 ACPI_SERIAL_END(video); 378 } 379 380 static void 381 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 382 { 383 struct acpi_video_softc *sc; 384 struct acpi_video_output *vo; 385 386 ACPI_SERIAL_ASSERT(video); 387 sc = context; 388 389 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 390 if (vo->adr == adr) { 391 acpi_video_vo_bind(vo, handle); 392 return; 393 } 394 } 395 vo = acpi_video_vo_init(adr); 396 if (vo != NULL) { 397 acpi_video_vo_bind(vo, handle); 398 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 399 } 400 } 401 402 static void 403 acpi_video_bind_outputs(struct acpi_video_softc *sc) 404 { 405 406 ACPI_SERIAL_ASSERT(video); 407 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 408 } 409 410 static struct acpi_video_output * 411 acpi_video_vo_init(UINT32 adr) 412 { 413 struct acpi_video_output *vn, *vo, *vp; 414 int n, x; 415 int display_index; 416 int display_port; 417 char name[8], env[32]; 418 const char *type, *desc; 419 struct acpi_video_output_queue *voqh; 420 421 ACPI_SERIAL_ASSERT(video); 422 display_index = adr & DOD_DEVID_MASK_DISPIDX; 423 display_port = (adr & DOD_DEVID_MASK_DISPPORT) >> 4; 424 425 switch (adr & DOD_DEVID_MASK) { 426 case DOD_DEVID_MONITOR: 427 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 428 /* DOD_DEVID_LCD is a common, backward compatible ID */ 429 desc = "Internal/Integrated Digital Flat Panel"; 430 type = "lcd"; 431 voqh = &lcd_units; 432 } else { 433 desc = "VGA CRT or VESA Compatible Analog Monitor"; 434 type = "crt"; 435 voqh = &crt_units; 436 } 437 break; 438 case DOD_DEVID_TV: 439 desc = "TV/HDTV or Analog-Video Monitor"; 440 type = "tv"; 441 voqh = &tv_units; 442 break; 443 case DOD_DEVID_EXT: 444 desc = "External Digital Monitor"; 445 type = "ext"; 446 voqh = &ext_units; 447 break; 448 case DOD_DEVID_INTDFP: 449 desc = "Internal/Integrated Digital Flat Panel"; 450 type = "lcd"; 451 voqh = &lcd_units; 452 break; 453 default: 454 desc = "unknown output"; 455 type = "out"; 456 voqh = &other_units; 457 } 458 459 n = 0; 460 vn = vp = NULL; 461 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 462 if (vn->vo_unit.num != n) 463 break; 464 vp = vn; 465 n++; 466 } 467 468 snprintf(name, sizeof(name), "%s%d", type, n); 469 470 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 471 if (vo != NULL) { 472 vo->handle = NULL; 473 vo->adr = adr; 474 vo->vo_unit.num = n; 475 vo->vo_brightness = -1; 476 vo->vo_fullpower = -1; /* TODO: override with tunables */ 477 vo->vo_economy = -1; 478 vo->vo_numlevels = 0; 479 vo->vo_levels = NULL; 480 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 481 if (getenv_int(env, &x)) 482 vo->vo_fullpower = x; 483 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 484 if (getenv_int(env, &x)) 485 vo->vo_economy = x; 486 487 sysctl_ctx_init(&vo->vo_sysctl_ctx); 488 if (vp != NULL) 489 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 490 else 491 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 492 if (acpi_video_sysctl_tree != NULL) 493 vo->vo_sysctl_tree = 494 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 495 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 496 OID_AUTO, name, CTLFLAG_RD, 0, desc); 497 if (vo->vo_sysctl_tree != NULL) { 498 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 499 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 500 OID_AUTO, "active", 501 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 502 acpi_video_vo_active_sysctl, "I", 503 "current activity of this device"); 504 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 505 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 506 OID_AUTO, "brightness", 507 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 508 acpi_video_vo_bright_sysctl, "I", 509 "current brightness level"); 510 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 511 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 512 OID_AUTO, "fullpower", 513 CTLTYPE_INT|CTLFLAG_RW, vo, 514 POWER_PROFILE_PERFORMANCE, 515 acpi_video_vo_presets_sysctl, "I", 516 "preset level for full power mode"); 517 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 518 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 519 OID_AUTO, "economy", 520 CTLTYPE_INT|CTLFLAG_RW, vo, 521 POWER_PROFILE_ECONOMY, 522 acpi_video_vo_presets_sysctl, "I", 523 "preset level for economy mode"); 524 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 525 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 526 OID_AUTO, "levels", 527 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 528 acpi_video_vo_levels_sysctl, "I", 529 "supported brightness levels"); 530 } else 531 printf("%s: sysctl node creation failed\n", type); 532 } else 533 printf("%s: softc allocation failed\n", type); 534 535 if (bootverbose) { 536 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 537 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 538 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 539 if (adr & DOD_BIOS) 540 printf(", detectable by BIOS"); 541 if (adr & DOD_NONVGA) 542 printf(" (Non-VGA output device whose power " 543 "is related to the VGA device)"); 544 printf(", head #%d\n", 545 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 546 } 547 return (vo); 548 } 549 550 static void 551 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 552 { 553 554 ACPI_SERIAL_ASSERT(video); 555 if (vo->vo_levels != NULL) 556 AcpiOsFree(vo->vo_levels); 557 vo->handle = handle; 558 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 559 if (vo->vo_numlevels >= 2) { 560 if (vo->vo_fullpower == -1 561 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 562 /* XXX - can't deal with rebinding... */ 563 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 564 if (vo->vo_economy == -1 565 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 566 /* XXX - see above. */ 567 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 568 } 569 } 570 571 static void 572 acpi_video_vo_destroy(struct acpi_video_output *vo) 573 { 574 struct acpi_video_output_queue *voqh; 575 576 ACPI_SERIAL_ASSERT(video); 577 if (vo->vo_sysctl_tree != NULL) { 578 vo->vo_sysctl_tree = NULL; 579 sysctl_ctx_free(&vo->vo_sysctl_ctx); 580 } 581 if (vo->vo_levels != NULL) 582 AcpiOsFree(vo->vo_levels); 583 584 switch (vo->adr & DOD_DEVID_MASK) { 585 case DOD_DEVID_MONITOR: 586 voqh = &crt_units; 587 break; 588 case DOD_DEVID_TV: 589 voqh = &tv_units; 590 break; 591 case DOD_DEVID_EXT: 592 voqh = &ext_units; 593 break; 594 case DOD_DEVID_INTDFP: 595 voqh = &lcd_units; 596 break; 597 default: 598 voqh = &other_units; 599 } 600 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 601 free(vo, M_ACPIVIDEO); 602 } 603 604 static int 605 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 606 { 607 int i; 608 609 ACPI_SERIAL_ASSERT(video); 610 if (vo->vo_levels == NULL) 611 return (ENODEV); 612 for (i = 0; i < vo->vo_numlevels; i++) 613 if (vo->vo_levels[i] == level) 614 return (0); 615 return (EINVAL); 616 } 617 618 /* ARGSUSED */ 619 static int 620 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 621 { 622 struct acpi_video_output *vo; 623 int state, err; 624 625 vo = (struct acpi_video_output *)arg1; 626 if (vo->handle == NULL) 627 return (ENXIO); 628 ACPI_SERIAL_BEGIN(video); 629 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 630 err = sysctl_handle_int(oidp, &state, 0, req); 631 if (err != 0 || req->newptr == NULL) 632 goto out; 633 vo_set_device_state(vo->handle, 634 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 635 out: 636 ACPI_SERIAL_END(video); 637 return (err); 638 } 639 640 /* ARGSUSED */ 641 static int 642 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 643 { 644 struct acpi_video_output *vo; 645 int level, preset, err; 646 647 vo = (struct acpi_video_output *)arg1; 648 ACPI_SERIAL_BEGIN(video); 649 if (vo->handle == NULL) { 650 err = ENXIO; 651 goto out; 652 } 653 if (vo->vo_levels == NULL) { 654 err = ENODEV; 655 goto out; 656 } 657 658 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 659 vo->vo_economy : vo->vo_fullpower; 660 level = vo->vo_brightness; 661 if (level == -1) 662 level = preset; 663 664 err = sysctl_handle_int(oidp, &level, 0, req); 665 if (err != 0 || req->newptr == NULL) 666 goto out; 667 if (level < -1 || level > 100) { 668 err = EINVAL; 669 goto out; 670 } 671 672 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 673 goto out; 674 vo->vo_brightness = level; 675 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 676 677 out: 678 ACPI_SERIAL_END(video); 679 return (err); 680 } 681 682 static int 683 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 684 { 685 struct acpi_video_output *vo; 686 int i, level, *preset, err; 687 688 err = 0; 689 vo = (struct acpi_video_output *)arg1; 690 ACPI_SERIAL_BEGIN(video); 691 if (vo->handle == NULL) { 692 err = ENXIO; 693 goto out; 694 } 695 if (vo->vo_levels == NULL) { 696 err = ENODEV; 697 goto out; 698 } 699 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 700 &vo->vo_economy : &vo->vo_fullpower; 701 level = *preset; 702 err = sysctl_handle_int(oidp, &level, 0, req); 703 if (err != 0 || req->newptr == NULL) 704 goto out; 705 if (level < -1 || level > 100) { 706 err = EINVAL; 707 goto out; 708 } 709 if (level == -1) { 710 i = (arg2 == POWER_PROFILE_ECONOMY) ? 711 BCL_ECONOMY : BCL_FULLPOWER; 712 level = vo->vo_levels[i]; 713 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 714 goto out; 715 716 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 717 vo_set_brightness(vo->handle, level); 718 *preset = level; 719 720 out: 721 ACPI_SERIAL_END(video); 722 return (err); 723 } 724 725 /* ARGSUSED */ 726 static int 727 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 728 { 729 struct acpi_video_output *vo; 730 int err; 731 732 vo = (struct acpi_video_output *)arg1; 733 ACPI_SERIAL_BEGIN(video); 734 if (vo->vo_levels == NULL) { 735 err = ENODEV; 736 goto out; 737 } 738 if (req->newptr != NULL) { 739 err = EPERM; 740 goto out; 741 } 742 err = sysctl_handle_opaque(oidp, vo->vo_levels, 743 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 744 745 out: 746 ACPI_SERIAL_END(video); 747 return (err); 748 } 749 750 static void 751 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 752 { 753 ACPI_STATUS status; 754 755 status = acpi_SetInteger(handle, "_DOS", policy); 756 if (ACPI_FAILURE(status)) 757 printf("can't evaluate %s._DOS - %s\n", 758 acpi_name(handle), AcpiFormatException(status)); 759 } 760 761 struct enum_callback_arg { 762 void (*callback)(ACPI_HANDLE, UINT32, void *); 763 void *context; 764 ACPI_OBJECT *dod_pkg; 765 int count; 766 }; 767 768 static ACPI_STATUS 769 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 770 void *context, void **retp __unused) 771 { 772 ACPI_STATUS status; 773 UINT32 adr, val; 774 struct enum_callback_arg *argset; 775 size_t i; 776 777 ACPI_SERIAL_ASSERT(video); 778 argset = context; 779 status = acpi_GetInteger(handle, "_ADR", &adr); 780 if (ACPI_FAILURE(status)) 781 return (AE_OK); 782 783 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 784 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 785 (val & DOD_DEVID_MASK_FULL) == adr) { 786 argset->callback(handle, val, argset->context); 787 argset->count++; 788 } 789 } 790 791 return (AE_OK); 792 } 793 794 static int 795 vid_enum_outputs(ACPI_HANDLE handle, 796 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 797 { 798 ACPI_STATUS status; 799 ACPI_BUFFER dod_buf; 800 ACPI_OBJECT *res; 801 struct enum_callback_arg argset; 802 803 ACPI_SERIAL_ASSERT(video); 804 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 805 dod_buf.Pointer = NULL; 806 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 807 if (ACPI_FAILURE(status)) { 808 if (status != AE_NOT_FOUND) 809 printf("can't evaluate %s._DOD - %s\n", 810 acpi_name(handle), AcpiFormatException(status)); 811 argset.count = -1; 812 goto out; 813 } 814 res = (ACPI_OBJECT *)dod_buf.Pointer; 815 if (!ACPI_PKG_VALID(res, 1)) { 816 printf("evaluation of %s._DOD makes no sense\n", 817 acpi_name(handle)); 818 argset.count = -1; 819 goto out; 820 } 821 if (callback == NULL) { 822 argset.count = res->Package.Count; 823 goto out; 824 } 825 argset.callback = callback; 826 argset.context = context; 827 argset.dod_pkg = res; 828 argset.count = 0; 829 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 830 vid_enum_outputs_subr, &argset, NULL); 831 if (ACPI_FAILURE(status)) 832 printf("failed walking down %s - %s\n", 833 acpi_name(handle), AcpiFormatException(status)); 834 out: 835 if (dod_buf.Pointer != NULL) 836 AcpiOsFree(dod_buf.Pointer); 837 return (argset.count); 838 } 839 840 static int 841 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 842 { 843 ACPI_STATUS status; 844 ACPI_BUFFER bcl_buf; 845 ACPI_OBJECT *res; 846 int num, i, n, *levels; 847 848 num = 0; 849 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 850 bcl_buf.Pointer = NULL; 851 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 852 if (ACPI_FAILURE(status)) { 853 if (status != AE_NOT_FOUND) 854 printf("can't evaluate %s._BCL - %s\n", 855 acpi_name(handle), AcpiFormatException(status)); 856 num = -1; 857 goto out; 858 } 859 res = (ACPI_OBJECT *)bcl_buf.Pointer; 860 if (!ACPI_PKG_VALID(res, 2)) { 861 printf("evaluation of %s._BCL makes no sense\n", 862 acpi_name(handle)); 863 num = -1; 864 goto out; 865 } 866 num = res->Package.Count; 867 if (levelp == NULL) 868 goto out; 869 levels = AcpiOsAllocate(num * sizeof(*levels)); 870 if (levels == NULL) { 871 num = -1; 872 goto out; 873 } 874 for (i = 0, n = 0; i < num; i++) 875 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 876 n++; 877 if (n < 2) { 878 num = -1; 879 AcpiOsFree(levels); 880 } else { 881 num = n; 882 *levelp = levels; 883 } 884 out: 885 if (bcl_buf.Pointer != NULL) 886 AcpiOsFree(bcl_buf.Pointer); 887 888 return (num); 889 } 890 891 static void 892 vo_set_brightness(ACPI_HANDLE handle, int level) 893 { 894 ACPI_STATUS status; 895 896 status = acpi_SetInteger(handle, "_BCM", level); 897 if (ACPI_FAILURE(status)) 898 printf("can't evaluate %s._BCM - %s\n", 899 acpi_name(handle), AcpiFormatException(status)); 900 } 901 902 static UINT32 903 vo_get_device_status(ACPI_HANDLE handle) 904 { 905 UINT32 dcs; 906 ACPI_STATUS status; 907 908 dcs = 0; 909 status = acpi_GetInteger(handle, "_DCS", &dcs); 910 if (ACPI_FAILURE(status)) 911 printf("can't evaluate %s._DCS - %s\n", 912 acpi_name(handle), AcpiFormatException(status)); 913 914 return (dcs); 915 } 916 917 static UINT32 918 vo_get_graphics_state(ACPI_HANDLE handle) 919 { 920 UINT32 dgs; 921 ACPI_STATUS status; 922 923 dgs = 0; 924 status = acpi_GetInteger(handle, "_DGS", &dgs); 925 if (ACPI_FAILURE(status)) 926 printf("can't evaluate %s._DGS - %s\n", 927 acpi_name(handle), AcpiFormatException(status)); 928 929 return (dgs); 930 } 931 932 static void 933 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 934 { 935 ACPI_STATUS status; 936 937 status = acpi_SetInteger(handle, "_DSS", state); 938 if (ACPI_FAILURE(status)) 939 printf("can't evaluate %s._DSS - %s\n", 940 acpi_name(handle), AcpiFormatException(status)); 941 }
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