acpi_video.c revision 261455
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: stable/10/sys/dev/acpica/acpi_video.c 261455 2014-02-04 03:36:42Z eadler $"); 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. */ 46struct 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 63STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 64 65struct 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 */ 73static int acpi_video_modevent(struct module*, int, void *); 74static void acpi_video_identify(driver_t *driver, device_t parent); 75static int acpi_video_probe(device_t); 76static int acpi_video_attach(device_t); 77static int acpi_video_detach(device_t); 78static int acpi_video_resume(device_t); 79static int acpi_video_shutdown(device_t); 80static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 81static void acpi_video_power_profile(void *); 82static void acpi_video_bind_outputs(struct acpi_video_softc *); 83static struct acpi_video_output *acpi_video_vo_init(UINT32); 84static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 85static void acpi_video_vo_destroy(struct acpi_video_output *); 86static int acpi_video_vo_check_level(struct acpi_video_output *, int); 87static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 88static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 89static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 90static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 91static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 92 93/* operations */ 94static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 95static int vid_enum_outputs(ACPI_HANDLE, 96 void(*)(ACPI_HANDLE, UINT32, void *), void *); 97static int vo_get_brightness_levels(ACPI_HANDLE, int **); 98static int vo_get_brightness(ACPI_HANDLE); 99static void vo_set_brightness(ACPI_HANDLE, int); 100static UINT32 vo_get_device_status(ACPI_HANDLE); 101static UINT32 vo_get_graphics_state(ACPI_HANDLE); 102static void vo_set_device_state(ACPI_HANDLE, UINT32); 103 104/* events */ 105#define VID_NOTIFY_SWITCHED 0x80 106#define VID_NOTIFY_REPROBE 0x81 107#define VID_NOTIFY_CYCLE_BRN 0x85 108#define VID_NOTIFY_INC_BRN 0x86 109#define VID_NOTIFY_DEC_BRN 0x87 110#define VID_NOTIFY_ZERO_BRN 0x88 111 112/* _DOS (Enable/Disable Output Switching) argument bits */ 113#define DOS_SWITCH_MASK 3 114#define DOS_SWITCH_BY_OSPM 0 115#define DOS_SWITCH_BY_BIOS 1 116#define DOS_SWITCH_LOCKED 2 117#define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 118 119/* _DOD and subdev's _ADR */ 120#define DOD_DEVID_MASK 0x0f00 121#define DOD_DEVID_MASK_FULL 0xffff 122#define DOD_DEVID_MASK_DISPIDX 0x000f 123#define DOD_DEVID_MASK_DISPPORT 0x00f0 124#define DOD_DEVID_MONITOR 0x0100 125#define DOD_DEVID_LCD 0x0110 126#define DOD_DEVID_TV 0x0200 127#define DOD_DEVID_EXT 0x0300 128#define DOD_DEVID_INTDFP 0x0400 129#define DOD_BIOS (1 << 16) 130#define DOD_NONVGA (1 << 17) 131#define DOD_HEAD_ID_SHIFT 18 132#define DOD_HEAD_ID_BITS 3 133#define DOD_HEAD_ID_MASK \ 134 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 135#define DOD_DEVID_SCHEME_STD (1U << 31) 136 137/* _BCL related constants */ 138#define BCL_FULLPOWER 0 139#define BCL_ECONOMY 1 140 141/* _DCS (Device Currrent Status) value bits and masks. */ 142#define DCS_EXISTS (1 << 0) 143#define DCS_ACTIVE (1 << 1) 144#define DCS_READY (1 << 2) 145#define DCS_FUNCTIONAL (1 << 3) 146#define DCS_ATTACHED (1 << 4) 147 148/* _DSS (Device Set Status) argument bits and masks. */ 149#define DSS_INACTIVE 0 150#define DSS_ACTIVE (1 << 0) 151#define DSS_SETNEXT (1 << 30) 152#define DSS_COMMIT (1U << 31) 153 154static device_method_t acpi_video_methods[] = { 155 DEVMETHOD(device_identify, acpi_video_identify), 156 DEVMETHOD(device_probe, acpi_video_probe), 157 DEVMETHOD(device_attach, acpi_video_attach), 158 DEVMETHOD(device_detach, acpi_video_detach), 159 DEVMETHOD(device_resume, acpi_video_resume), 160 DEVMETHOD(device_shutdown, acpi_video_shutdown), 161 { 0, 0 } 162}; 163 164static driver_t acpi_video_driver = { 165 "acpi_video", 166 acpi_video_methods, 167 sizeof(struct acpi_video_softc), 168}; 169 170static devclass_t acpi_video_devclass; 171 172DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 173 acpi_video_modevent, NULL); 174MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 175 176static struct sysctl_ctx_list acpi_video_sysctl_ctx; 177static struct sysctl_oid *acpi_video_sysctl_tree; 178static struct acpi_video_output_queue crt_units, tv_units, 179 ext_units, lcd_units, other_units; 180 181/* 182 * The 'video' lock protects the hierarchy of video output devices 183 * (the video "bus"). The 'video_output' lock protects per-output 184 * data is equivalent to a softc lock for each video output. 185 */ 186ACPI_SERIAL_DECL(video, "ACPI video"); 187ACPI_SERIAL_DECL(video_output, "ACPI video output"); 188static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 189 190static int 191acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 192{ 193 int err; 194 195 err = 0; 196 switch (evt) { 197 case MOD_LOAD: 198 sysctl_ctx_init(&acpi_video_sysctl_ctx); 199 STAILQ_INIT(&crt_units); 200 STAILQ_INIT(&tv_units); 201 STAILQ_INIT(&ext_units); 202 STAILQ_INIT(&lcd_units); 203 STAILQ_INIT(&other_units); 204 break; 205 case MOD_UNLOAD: 206 sysctl_ctx_free(&acpi_video_sysctl_ctx); 207 acpi_video_sysctl_tree = NULL; 208 break; 209 default: 210 err = EINVAL; 211 } 212 213 return (err); 214} 215 216static void 217acpi_video_identify(driver_t *driver, device_t parent) 218{ 219 220 if (device_find_child(parent, "acpi_video", -1) == NULL) 221 device_add_child(parent, "acpi_video", -1); 222} 223 224static int 225acpi_video_probe(device_t dev) 226{ 227 ACPI_HANDLE devh, h; 228 ACPI_OBJECT_TYPE t_dos; 229 230 devh = acpi_get_handle(dev); 231 if (acpi_disabled("video") || 232 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 233 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 234 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 235 t_dos != ACPI_TYPE_METHOD) 236 return (ENXIO); 237 238 device_set_desc(dev, "ACPI video extension"); 239 return (0); 240} 241 242static int 243acpi_video_attach(device_t dev) 244{ 245 struct acpi_softc *acpi_sc; 246 struct acpi_video_softc *sc; 247 248 sc = device_get_softc(dev); 249 250 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 251 if (acpi_sc == NULL) 252 return (ENXIO); 253 ACPI_SERIAL_BEGIN(video); 254 if (acpi_video_sysctl_tree == NULL) { 255 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 256 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 257 OID_AUTO, "video", CTLFLAG_RD, 0, 258 "video extension control"); 259 } 260 ACPI_SERIAL_END(video); 261 262 sc->device = dev; 263 sc->handle = acpi_get_handle(dev); 264 STAILQ_INIT(&sc->vid_outputs); 265 266 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 267 acpi_video_notify_handler, sc); 268 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 269 acpi_video_power_profile, sc, 0); 270 271 ACPI_SERIAL_BEGIN(video); 272 acpi_video_bind_outputs(sc); 273 ACPI_SERIAL_END(video); 274 275 /* 276 * Notify the BIOS that we want to switch both active outputs and 277 * brightness levels. 278 */ 279 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 280 DOS_BRIGHTNESS_BY_OSPM); 281 282 acpi_video_power_profile(sc); 283 284 return (0); 285} 286 287static int 288acpi_video_detach(device_t dev) 289{ 290 struct acpi_video_softc *sc; 291 struct acpi_video_output *vo, *vn; 292 293 sc = device_get_softc(dev); 294 295 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 296 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 297 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 298 acpi_video_notify_handler); 299 300 ACPI_SERIAL_BEGIN(video); 301 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 302 acpi_video_vo_destroy(vo); 303 } 304 ACPI_SERIAL_END(video); 305 306 return (0); 307} 308 309static int 310acpi_video_resume(device_t dev) 311{ 312 struct acpi_video_softc *sc; 313 struct acpi_video_output *vo, *vn; 314 int level; 315 316 sc = device_get_softc(dev); 317 318 /* Restore brightness level */ 319 ACPI_SERIAL_BEGIN(video); 320 ACPI_SERIAL_BEGIN(video_output); 321 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 322 if ((vo->adr & DOD_DEVID_MASK_FULL) != DOD_DEVID_LCD && 323 (vo->adr & DOD_DEVID_MASK) != DOD_DEVID_INTDFP) 324 continue; 325 326 if ((vo_get_device_status(vo->handle) & DCS_ACTIVE) == 0) 327 continue; 328 329 level = vo_get_brightness(vo->handle); 330 if (level != -1) 331 vo_set_brightness(vo->handle, level); 332 } 333 ACPI_SERIAL_END(video_output); 334 ACPI_SERIAL_END(video); 335 336 return (0); 337} 338 339static int 340acpi_video_shutdown(device_t dev) 341{ 342 struct acpi_video_softc *sc; 343 344 sc = device_get_softc(dev); 345 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 346 347 return (0); 348} 349 350static void 351acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 352{ 353 struct acpi_video_softc *sc; 354 struct acpi_video_output *vo, *vo_tmp; 355 ACPI_HANDLE lasthand; 356 UINT32 dcs, dss, dss_p; 357 358 sc = (struct acpi_video_softc *)context; 359 360 switch (notify) { 361 case VID_NOTIFY_SWITCHED: 362 dss_p = 0; 363 lasthand = NULL; 364 ACPI_SERIAL_BEGIN(video); 365 ACPI_SERIAL_BEGIN(video_output); 366 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 367 dss = vo_get_graphics_state(vo->handle); 368 dcs = vo_get_device_status(vo->handle); 369 if (!(dcs & DCS_READY)) 370 dss = DSS_INACTIVE; 371 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 372 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 373 if (lasthand != NULL) 374 vo_set_device_state(lasthand, dss_p); 375 dss_p = dss; 376 lasthand = vo->handle; 377 } 378 } 379 if (lasthand != NULL) 380 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 381 ACPI_SERIAL_END(video_output); 382 ACPI_SERIAL_END(video); 383 break; 384 case VID_NOTIFY_REPROBE: 385 ACPI_SERIAL_BEGIN(video); 386 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 387 vo->handle = NULL; 388 acpi_video_bind_outputs(sc); 389 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 390 if (vo->handle == NULL) { 391 STAILQ_REMOVE(&sc->vid_outputs, vo, 392 acpi_video_output, vo_next); 393 acpi_video_vo_destroy(vo); 394 } 395 } 396 ACPI_SERIAL_END(video); 397 break; 398 default: 399 device_printf(sc->device, "unknown notify event 0x%x\n", 400 notify); 401 } 402} 403 404static void 405acpi_video_power_profile(void *context) 406{ 407 int state; 408 struct acpi_video_softc *sc; 409 struct acpi_video_output *vo; 410 411 sc = context; 412 state = power_profile_get_state(); 413 if (state != POWER_PROFILE_PERFORMANCE && 414 state != POWER_PROFILE_ECONOMY) 415 return; 416 417 ACPI_SERIAL_BEGIN(video); 418 ACPI_SERIAL_BEGIN(video_output); 419 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 420 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 421 vo_set_brightness(vo->handle, 422 state == POWER_PROFILE_ECONOMY ? 423 vo->vo_economy : vo->vo_fullpower); 424 } 425 ACPI_SERIAL_END(video_output); 426 ACPI_SERIAL_END(video); 427} 428 429static void 430acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 431{ 432 struct acpi_video_softc *sc; 433 struct acpi_video_output *vo; 434 435 ACPI_SERIAL_ASSERT(video); 436 sc = context; 437 438 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 439 if (vo->adr == adr) { 440 acpi_video_vo_bind(vo, handle); 441 return; 442 } 443 } 444 vo = acpi_video_vo_init(adr); 445 if (vo != NULL) { 446 acpi_video_vo_bind(vo, handle); 447 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 448 } 449} 450 451static void 452acpi_video_bind_outputs(struct acpi_video_softc *sc) 453{ 454 455 ACPI_SERIAL_ASSERT(video); 456 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 457} 458 459static struct acpi_video_output * 460acpi_video_vo_init(UINT32 adr) 461{ 462 struct acpi_video_output *vn, *vo, *vp; 463 int n, x; 464 char name[8], env[32]; 465 const char *type, *desc; 466 struct acpi_video_output_queue *voqh; 467 468 ACPI_SERIAL_ASSERT(video); 469 470 switch (adr & DOD_DEVID_MASK) { 471 case DOD_DEVID_MONITOR: 472 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 473 /* DOD_DEVID_LCD is a common, backward compatible ID */ 474 desc = "Internal/Integrated Digital Flat Panel"; 475 type = "lcd"; 476 voqh = &lcd_units; 477 } else { 478 desc = "VGA CRT or VESA Compatible Analog Monitor"; 479 type = "crt"; 480 voqh = &crt_units; 481 } 482 break; 483 case DOD_DEVID_TV: 484 desc = "TV/HDTV or Analog-Video Monitor"; 485 type = "tv"; 486 voqh = &tv_units; 487 break; 488 case DOD_DEVID_EXT: 489 desc = "External Digital Monitor"; 490 type = "ext"; 491 voqh = &ext_units; 492 break; 493 case DOD_DEVID_INTDFP: 494 desc = "Internal/Integrated Digital Flat Panel"; 495 type = "lcd"; 496 voqh = &lcd_units; 497 break; 498 default: 499 desc = "unknown output"; 500 type = "out"; 501 voqh = &other_units; 502 } 503 504 n = 0; 505 vp = NULL; 506 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 507 if (vn->vo_unit.num != n) 508 break; 509 vp = vn; 510 n++; 511 } 512 513 snprintf(name, sizeof(name), "%s%d", type, n); 514 515 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 516 if (vo != NULL) { 517 vo->handle = NULL; 518 vo->adr = adr; 519 vo->vo_unit.num = n; 520 vo->vo_brightness = -1; 521 vo->vo_fullpower = -1; /* TODO: override with tunables */ 522 vo->vo_economy = -1; 523 vo->vo_numlevels = 0; 524 vo->vo_levels = NULL; 525 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 526 if (getenv_int(env, &x)) 527 vo->vo_fullpower = x; 528 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 529 if (getenv_int(env, &x)) 530 vo->vo_economy = x; 531 532 sysctl_ctx_init(&vo->vo_sysctl_ctx); 533 if (vp != NULL) 534 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 535 else 536 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 537 if (acpi_video_sysctl_tree != NULL) 538 vo->vo_sysctl_tree = 539 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 540 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 541 OID_AUTO, name, CTLFLAG_RD, 0, desc); 542 if (vo->vo_sysctl_tree != NULL) { 543 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 544 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 545 OID_AUTO, "active", 546 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 547 acpi_video_vo_active_sysctl, "I", 548 "current activity of this device"); 549 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 550 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 551 OID_AUTO, "brightness", 552 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 553 acpi_video_vo_bright_sysctl, "I", 554 "current brightness level"); 555 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 556 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 557 OID_AUTO, "fullpower", 558 CTLTYPE_INT|CTLFLAG_RW, vo, 559 POWER_PROFILE_PERFORMANCE, 560 acpi_video_vo_presets_sysctl, "I", 561 "preset level for full power mode"); 562 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 563 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 564 OID_AUTO, "economy", 565 CTLTYPE_INT|CTLFLAG_RW, vo, 566 POWER_PROFILE_ECONOMY, 567 acpi_video_vo_presets_sysctl, "I", 568 "preset level for economy mode"); 569 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 570 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 571 OID_AUTO, "levels", 572 CTLTYPE_INT | CTLFLAG_RD, vo, 0, 573 acpi_video_vo_levels_sysctl, "I", 574 "supported brightness levels"); 575 } else 576 printf("%s: sysctl node creation failed\n", type); 577 } else 578 printf("%s: softc allocation failed\n", type); 579 580 if (bootverbose) { 581 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 582 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 583 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 584 if (adr & DOD_BIOS) 585 printf(", detectable by BIOS"); 586 if (adr & DOD_NONVGA) 587 printf(" (Non-VGA output device whose power " 588 "is related to the VGA device)"); 589 printf(", head #%d\n", 590 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 591 } 592 return (vo); 593} 594 595static void 596acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 597{ 598 599 ACPI_SERIAL_BEGIN(video_output); 600 if (vo->vo_levels != NULL) 601 AcpiOsFree(vo->vo_levels); 602 vo->handle = handle; 603 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 604 if (vo->vo_numlevels >= 2) { 605 if (vo->vo_fullpower == -1 606 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 607 /* XXX - can't deal with rebinding... */ 608 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 609 if (vo->vo_economy == -1 610 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 611 /* XXX - see above. */ 612 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 613 } 614 if (vo->vo_levels != NULL) 615 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 616 acpi_video_vo_notify_handler, vo); 617 ACPI_SERIAL_END(video_output); 618} 619 620static void 621acpi_video_vo_destroy(struct acpi_video_output *vo) 622{ 623 struct acpi_video_output_queue *voqh; 624 625 ACPI_SERIAL_ASSERT(video); 626 if (vo->vo_sysctl_tree != NULL) { 627 vo->vo_sysctl_tree = NULL; 628 sysctl_ctx_free(&vo->vo_sysctl_ctx); 629 } 630 if (vo->vo_levels != NULL) { 631 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 632 acpi_video_vo_notify_handler); 633 AcpiOsFree(vo->vo_levels); 634 } 635 636 switch (vo->adr & DOD_DEVID_MASK) { 637 case DOD_DEVID_MONITOR: 638 voqh = &crt_units; 639 break; 640 case DOD_DEVID_TV: 641 voqh = &tv_units; 642 break; 643 case DOD_DEVID_EXT: 644 voqh = &ext_units; 645 break; 646 case DOD_DEVID_INTDFP: 647 voqh = &lcd_units; 648 break; 649 default: 650 voqh = &other_units; 651 } 652 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 653 free(vo, M_ACPIVIDEO); 654} 655 656static int 657acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 658{ 659 int i; 660 661 ACPI_SERIAL_ASSERT(video_output); 662 if (vo->vo_levels == NULL) 663 return (ENODEV); 664 for (i = 0; i < vo->vo_numlevels; i++) 665 if (vo->vo_levels[i] == level) 666 return (0); 667 return (EINVAL); 668} 669 670static void 671acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 672{ 673 struct acpi_video_output *vo; 674 int i, j, level, new_level; 675 676 vo = context; 677 ACPI_SERIAL_BEGIN(video_output); 678 if (vo->handle != handle) 679 goto out; 680 681 switch (notify) { 682 case VID_NOTIFY_CYCLE_BRN: 683 if (vo->vo_numlevels <= 3) 684 goto out; 685 /* FALLTHROUGH */ 686 case VID_NOTIFY_INC_BRN: 687 case VID_NOTIFY_DEC_BRN: 688 case VID_NOTIFY_ZERO_BRN: 689 if (vo->vo_levels == NULL) 690 goto out; 691 level = vo_get_brightness(handle); 692 if (level < 0) 693 goto out; 694 break; 695 default: 696 printf("unknown notify event 0x%x from %s\n", 697 notify, acpi_name(handle)); 698 goto out; 699 } 700 701 new_level = level; 702 switch (notify) { 703 case VID_NOTIFY_CYCLE_BRN: 704 for (i = 2; i < vo->vo_numlevels; i++) 705 if (vo->vo_levels[i] == level) { 706 new_level = vo->vo_numlevels > i + 1 ? 707 vo->vo_levels[i + 1] : vo->vo_levels[2]; 708 break; 709 } 710 break; 711 case VID_NOTIFY_INC_BRN: 712 case VID_NOTIFY_DEC_BRN: 713 for (i = 0; i < vo->vo_numlevels; i++) { 714 j = vo->vo_levels[i]; 715 if (notify == VID_NOTIFY_INC_BRN) { 716 if (j > level && 717 (j < new_level || level == new_level)) 718 new_level = j; 719 } else { 720 if (j < level && 721 (j > new_level || level == new_level)) 722 new_level = j; 723 } 724 } 725 break; 726 case VID_NOTIFY_ZERO_BRN: 727 for (i = 0; i < vo->vo_numlevels; i++) 728 if (vo->vo_levels[i] == 0) { 729 new_level = 0; 730 break; 731 } 732 break; 733 } 734 if (new_level != level) { 735 vo_set_brightness(handle, new_level); 736 vo->vo_brightness = new_level; 737 } 738 739out: 740 ACPI_SERIAL_END(video_output); 741} 742 743/* ARGSUSED */ 744static int 745acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 746{ 747 struct acpi_video_output *vo; 748 int state, err; 749 750 vo = (struct acpi_video_output *)arg1; 751 if (vo->handle == NULL) 752 return (ENXIO); 753 ACPI_SERIAL_BEGIN(video_output); 754 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 755 err = sysctl_handle_int(oidp, &state, 0, req); 756 if (err != 0 || req->newptr == NULL) 757 goto out; 758 vo_set_device_state(vo->handle, 759 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 760out: 761 ACPI_SERIAL_END(video_output); 762 return (err); 763} 764 765/* ARGSUSED */ 766static int 767acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 768{ 769 struct acpi_video_output *vo; 770 int level, preset, err; 771 772 vo = (struct acpi_video_output *)arg1; 773 ACPI_SERIAL_BEGIN(video_output); 774 if (vo->handle == NULL) { 775 err = ENXIO; 776 goto out; 777 } 778 if (vo->vo_levels == NULL) { 779 err = ENODEV; 780 goto out; 781 } 782 783 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 784 vo->vo_economy : vo->vo_fullpower; 785 level = vo->vo_brightness; 786 if (level == -1) 787 level = preset; 788 789 err = sysctl_handle_int(oidp, &level, 0, req); 790 if (err != 0 || req->newptr == NULL) 791 goto out; 792 if (level < -1 || level > 100) { 793 err = EINVAL; 794 goto out; 795 } 796 797 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 798 goto out; 799 vo->vo_brightness = level; 800 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 801 802out: 803 ACPI_SERIAL_END(video_output); 804 return (err); 805} 806 807static int 808acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 809{ 810 struct acpi_video_output *vo; 811 int i, level, *preset, err; 812 813 vo = (struct acpi_video_output *)arg1; 814 ACPI_SERIAL_BEGIN(video_output); 815 if (vo->handle == NULL) { 816 err = ENXIO; 817 goto out; 818 } 819 if (vo->vo_levels == NULL) { 820 err = ENODEV; 821 goto out; 822 } 823 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 824 &vo->vo_economy : &vo->vo_fullpower; 825 level = *preset; 826 err = sysctl_handle_int(oidp, &level, 0, req); 827 if (err != 0 || req->newptr == NULL) 828 goto out; 829 if (level < -1 || level > 100) { 830 err = EINVAL; 831 goto out; 832 } 833 if (level == -1) { 834 i = (arg2 == POWER_PROFILE_ECONOMY) ? 835 BCL_ECONOMY : BCL_FULLPOWER; 836 level = vo->vo_levels[i]; 837 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 838 goto out; 839 840 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 841 vo_set_brightness(vo->handle, level); 842 *preset = level; 843 844out: 845 ACPI_SERIAL_END(video_output); 846 return (err); 847} 848 849/* ARGSUSED */ 850static int 851acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 852{ 853 struct acpi_video_output *vo; 854 int err; 855 856 vo = (struct acpi_video_output *)arg1; 857 ACPI_SERIAL_BEGIN(video_output); 858 if (vo->vo_levels == NULL) { 859 err = ENODEV; 860 goto out; 861 } 862 if (req->newptr != NULL) { 863 err = EPERM; 864 goto out; 865 } 866 err = sysctl_handle_opaque(oidp, vo->vo_levels, 867 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 868 869out: 870 ACPI_SERIAL_END(video_output); 871 return (err); 872} 873 874static void 875vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 876{ 877 ACPI_STATUS status; 878 879 status = acpi_SetInteger(handle, "_DOS", policy); 880 if (ACPI_FAILURE(status)) 881 printf("can't evaluate %s._DOS - %s\n", 882 acpi_name(handle), AcpiFormatException(status)); 883} 884 885struct enum_callback_arg { 886 void (*callback)(ACPI_HANDLE, UINT32, void *); 887 void *context; 888 ACPI_OBJECT *dod_pkg; 889 int count; 890}; 891 892static ACPI_STATUS 893vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 894 void *context, void **retp __unused) 895{ 896 ACPI_STATUS status; 897 UINT32 adr, val; 898 struct enum_callback_arg *argset; 899 size_t i; 900 901 ACPI_SERIAL_ASSERT(video); 902 argset = context; 903 status = acpi_GetInteger(handle, "_ADR", &adr); 904 if (ACPI_FAILURE(status)) 905 return (AE_OK); 906 907 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 908 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 909 (val & DOD_DEVID_MASK_FULL) == 910 (adr & DOD_DEVID_MASK_FULL)) { 911 argset->callback(handle, val, argset->context); 912 argset->count++; 913 } 914 } 915 916 return (AE_OK); 917} 918 919static int 920vid_enum_outputs(ACPI_HANDLE handle, 921 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 922{ 923 ACPI_STATUS status; 924 ACPI_BUFFER dod_buf; 925 ACPI_OBJECT *res; 926 struct enum_callback_arg argset; 927 928 ACPI_SERIAL_ASSERT(video); 929 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 930 dod_buf.Pointer = NULL; 931 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 932 if (ACPI_FAILURE(status)) { 933 if (status != AE_NOT_FOUND) 934 printf("can't evaluate %s._DOD - %s\n", 935 acpi_name(handle), AcpiFormatException(status)); 936 argset.count = -1; 937 goto out; 938 } 939 res = (ACPI_OBJECT *)dod_buf.Pointer; 940 if (!ACPI_PKG_VALID(res, 1)) { 941 printf("evaluation of %s._DOD makes no sense\n", 942 acpi_name(handle)); 943 argset.count = -1; 944 goto out; 945 } 946 if (callback == NULL) { 947 argset.count = res->Package.Count; 948 goto out; 949 } 950 argset.callback = callback; 951 argset.context = context; 952 argset.dod_pkg = res; 953 argset.count = 0; 954 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 955 vid_enum_outputs_subr, NULL, &argset, NULL); 956 if (ACPI_FAILURE(status)) 957 printf("failed walking down %s - %s\n", 958 acpi_name(handle), AcpiFormatException(status)); 959out: 960 if (dod_buf.Pointer != NULL) 961 AcpiOsFree(dod_buf.Pointer); 962 return (argset.count); 963} 964 965static int 966vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 967{ 968 ACPI_STATUS status; 969 ACPI_BUFFER bcl_buf; 970 ACPI_OBJECT *res; 971 int num, i, n, *levels; 972 973 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 974 bcl_buf.Pointer = NULL; 975 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 976 if (ACPI_FAILURE(status)) { 977 if (status != AE_NOT_FOUND) 978 printf("can't evaluate %s._BCL - %s\n", 979 acpi_name(handle), AcpiFormatException(status)); 980 goto out; 981 } 982 res = (ACPI_OBJECT *)bcl_buf.Pointer; 983 if (!ACPI_PKG_VALID(res, 2)) { 984 printf("evaluation of %s._BCL makes no sense\n", 985 acpi_name(handle)); 986 goto out; 987 } 988 num = res->Package.Count; 989 if (num < 2 || levelp == NULL) 990 goto out; 991 levels = AcpiOsAllocate(num * sizeof(*levels)); 992 if (levels == NULL) 993 goto out; 994 for (i = 0, n = 0; i < num; i++) 995 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 996 n++; 997 if (n < 2) { 998 AcpiOsFree(levels); 999 goto out; 1000 } 1001 *levelp = levels; 1002 return (n); 1003 1004out: 1005 if (bcl_buf.Pointer != NULL) 1006 AcpiOsFree(bcl_buf.Pointer); 1007 return (0); 1008} 1009 1010static int 1011vo_get_brightness(ACPI_HANDLE handle) 1012{ 1013 UINT32 level; 1014 ACPI_STATUS status; 1015 1016 ACPI_SERIAL_ASSERT(video_output); 1017 status = acpi_GetInteger(handle, "_BQC", &level); 1018 if (ACPI_FAILURE(status)) { 1019 printf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 1020 AcpiFormatException(status)); 1021 return (-1); 1022 } 1023 if (level > 100) 1024 return (-1); 1025 1026 return (level); 1027} 1028 1029static void 1030vo_set_brightness(ACPI_HANDLE handle, int level) 1031{ 1032 ACPI_STATUS status; 1033 1034 ACPI_SERIAL_ASSERT(video_output); 1035 status = acpi_SetInteger(handle, "_BCM", level); 1036 if (ACPI_FAILURE(status)) 1037 printf("can't evaluate %s._BCM - %s\n", 1038 acpi_name(handle), AcpiFormatException(status)); 1039} 1040 1041static UINT32 1042vo_get_device_status(ACPI_HANDLE handle) 1043{ 1044 UINT32 dcs; 1045 ACPI_STATUS status; 1046 1047 ACPI_SERIAL_ASSERT(video_output); 1048 dcs = 0; 1049 status = acpi_GetInteger(handle, "_DCS", &dcs); 1050 if (ACPI_FAILURE(status)) 1051 printf("can't evaluate %s._DCS - %s\n", 1052 acpi_name(handle), AcpiFormatException(status)); 1053 1054 return (dcs); 1055} 1056 1057static UINT32 1058vo_get_graphics_state(ACPI_HANDLE handle) 1059{ 1060 UINT32 dgs; 1061 ACPI_STATUS status; 1062 1063 dgs = 0; 1064 status = acpi_GetInteger(handle, "_DGS", &dgs); 1065 if (ACPI_FAILURE(status)) 1066 printf("can't evaluate %s._DGS - %s\n", 1067 acpi_name(handle), AcpiFormatException(status)); 1068 1069 return (dgs); 1070} 1071 1072static void 1073vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1074{ 1075 ACPI_STATUS status; 1076 1077 ACPI_SERIAL_ASSERT(video_output); 1078 status = acpi_SetInteger(handle, "_DSS", state); 1079 if (ACPI_FAILURE(status)) 1080 printf("can't evaluate %s._DSS - %s\n", 1081 acpi_name(handle), AcpiFormatException(status)); 1082} 1083