acpi_video.c revision 209064
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: head/sys/dev/acpica/acpi_video.c 209064 2010-06-11 19:53:42Z 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. */ 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_shutdown(device_t); 79static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 80static void acpi_video_power_profile(void *); 81static void acpi_video_bind_outputs(struct acpi_video_softc *); 82static struct acpi_video_output *acpi_video_vo_init(UINT32); 83static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 84static void acpi_video_vo_destroy(struct acpi_video_output *); 85static int acpi_video_vo_check_level(struct acpi_video_output *, int); 86static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 87static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 88static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 89static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 90static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 91 92/* operations */ 93static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 94static int vid_enum_outputs(ACPI_HANDLE, 95 void(*)(ACPI_HANDLE, UINT32, void *), void *); 96static int vo_get_brightness_levels(ACPI_HANDLE, int **); 97static int vo_get_brightness(ACPI_HANDLE); 98static void vo_set_brightness(ACPI_HANDLE, int); 99static UINT32 vo_get_device_status(ACPI_HANDLE); 100static UINT32 vo_get_graphics_state(ACPI_HANDLE); 101static void vo_set_device_state(ACPI_HANDLE, UINT32); 102 103/* events */ 104#define VID_NOTIFY_SWITCHED 0x80 105#define VID_NOTIFY_REPROBE 0x81 106#define VID_NOTIFY_CYCLE_BRN 0x85 107#define VID_NOTIFY_INC_BRN 0x86 108#define VID_NOTIFY_DEC_BRN 0x87 109#define VID_NOTIFY_ZERO_BRN 0x88 110 111/* _DOS (Enable/Disable Output Switching) argument bits */ 112#define DOS_SWITCH_MASK 3 113#define DOS_SWITCH_BY_OSPM 0 114#define DOS_SWITCH_BY_BIOS 1 115#define DOS_SWITCH_LOCKED 2 116#define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 117 118/* _DOD and subdev's _ADR */ 119#define DOD_DEVID_MASK 0x0f00 120#define DOD_DEVID_MASK_FULL 0xffff 121#define DOD_DEVID_MASK_DISPIDX 0x000f 122#define DOD_DEVID_MASK_DISPPORT 0x00f0 123#define DOD_DEVID_MONITOR 0x0100 124#define DOD_DEVID_LCD 0x0110 125#define DOD_DEVID_TV 0x0200 126#define DOD_DEVID_EXT 0x0300 127#define DOD_DEVID_INTDFP 0x0400 128#define DOD_BIOS (1 << 16) 129#define DOD_NONVGA (1 << 17) 130#define DOD_HEAD_ID_SHIFT 18 131#define DOD_HEAD_ID_BITS 3 132#define DOD_HEAD_ID_MASK \ 133 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 134#define DOD_DEVID_SCHEME_STD (1 << 31) 135 136/* _BCL related constants */ 137#define BCL_FULLPOWER 0 138#define BCL_ECONOMY 1 139 140/* _DCS (Device Currrent Status) value bits and masks. */ 141#define DCS_EXISTS (1 << 0) 142#define DCS_ACTIVE (1 << 1) 143#define DCS_READY (1 << 2) 144#define DCS_FUNCTIONAL (1 << 3) 145#define DCS_ATTACHED (1 << 4) 146 147/* _DSS (Device Set Status) argument bits and masks. */ 148#define DSS_INACTIVE 0 149#define DSS_ACTIVE (1 << 0) 150#define DSS_SETNEXT (1 << 30) 151#define DSS_COMMIT (1 << 31) 152 153static device_method_t acpi_video_methods[] = { 154 DEVMETHOD(device_identify, acpi_video_identify), 155 DEVMETHOD(device_probe, acpi_video_probe), 156 DEVMETHOD(device_attach, acpi_video_attach), 157 DEVMETHOD(device_detach, acpi_video_detach), 158 DEVMETHOD(device_shutdown, acpi_video_shutdown), 159 { 0, 0 } 160}; 161 162static driver_t acpi_video_driver = { 163 "acpi_video", 164 acpi_video_methods, 165 sizeof(struct acpi_video_softc), 166}; 167 168static devclass_t acpi_video_devclass; 169 170DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 171 acpi_video_modevent, NULL); 172MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 173 174static struct sysctl_ctx_list acpi_video_sysctl_ctx; 175static struct sysctl_oid *acpi_video_sysctl_tree; 176static struct acpi_video_output_queue crt_units, tv_units, 177 ext_units, lcd_units, other_units; 178 179/* 180 * The 'video' lock protects the hierarchy of video output devices 181 * (the video "bus"). The 'video_output' lock protects per-output 182 * data is equivalent to a softc lock for each video output. 183 */ 184ACPI_SERIAL_DECL(video, "ACPI video"); 185ACPI_SERIAL_DECL(video_output, "ACPI video output"); 186MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 187 188static int 189acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 190{ 191 int err; 192 193 err = 0; 194 switch (evt) { 195 case MOD_LOAD: 196 sysctl_ctx_init(&acpi_video_sysctl_ctx); 197 STAILQ_INIT(&crt_units); 198 STAILQ_INIT(&tv_units); 199 STAILQ_INIT(&ext_units); 200 STAILQ_INIT(&lcd_units); 201 STAILQ_INIT(&other_units); 202 break; 203 case MOD_UNLOAD: 204 sysctl_ctx_free(&acpi_video_sysctl_ctx); 205 acpi_video_sysctl_tree = NULL; 206 break; 207 default: 208 err = EINVAL; 209 } 210 211 return (err); 212} 213 214static void 215acpi_video_identify(driver_t *driver, device_t parent) 216{ 217 218 if (device_find_child(parent, "acpi_video", -1) == NULL) 219 device_add_child(parent, "acpi_video", -1); 220} 221 222static int 223acpi_video_probe(device_t dev) 224{ 225 ACPI_HANDLE devh, h; 226 ACPI_OBJECT_TYPE t_dos; 227 228 devh = acpi_get_handle(dev); 229 if (acpi_disabled("video") || 230 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 231 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 232 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 233 t_dos != ACPI_TYPE_METHOD) 234 return (ENXIO); 235 236 device_set_desc(dev, "ACPI video extension"); 237 return (0); 238} 239 240static int 241acpi_video_attach(device_t dev) 242{ 243 struct acpi_softc *acpi_sc; 244 struct acpi_video_softc *sc; 245 246 sc = device_get_softc(dev); 247 248 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 249 if (acpi_sc == NULL) 250 return (ENXIO); 251 ACPI_SERIAL_BEGIN(video); 252 if (acpi_video_sysctl_tree == NULL) { 253 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 254 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 255 OID_AUTO, "video", CTLFLAG_RD, 0, 256 "video extension control"); 257 } 258 ACPI_SERIAL_END(video); 259 260 sc->device = dev; 261 sc->handle = acpi_get_handle(dev); 262 STAILQ_INIT(&sc->vid_outputs); 263 264 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 265 acpi_video_notify_handler, sc); 266 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 267 acpi_video_power_profile, sc, 0); 268 269 ACPI_SERIAL_BEGIN(video); 270 acpi_video_bind_outputs(sc); 271 ACPI_SERIAL_END(video); 272 273 /* 274 * Notify the BIOS that we want to switch both active outputs and 275 * brightness levels. 276 */ 277 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 278 DOS_BRIGHTNESS_BY_OSPM); 279 280 acpi_video_power_profile(sc); 281 282 return (0); 283} 284 285static int 286acpi_video_detach(device_t dev) 287{ 288 struct acpi_video_softc *sc; 289 struct acpi_video_output *vo, *vn; 290 291 sc = device_get_softc(dev); 292 293 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 294 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 295 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 296 acpi_video_notify_handler); 297 298 ACPI_SERIAL_BEGIN(video); 299 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 300 acpi_video_vo_destroy(vo); 301 } 302 ACPI_SERIAL_END(video); 303 304 return (0); 305} 306 307static int 308acpi_video_shutdown(device_t dev) 309{ 310 struct acpi_video_softc *sc; 311 312 sc = device_get_softc(dev); 313 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 314 315 return (0); 316} 317 318static void 319acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 320{ 321 struct acpi_video_softc *sc; 322 struct acpi_video_output *vo, *vo_tmp; 323 ACPI_HANDLE lasthand; 324 UINT32 dcs, dss, dss_p; 325 326 sc = (struct acpi_video_softc *)context; 327 328 switch (notify) { 329 case VID_NOTIFY_SWITCHED: 330 dss_p = 0; 331 lasthand = NULL; 332 ACPI_SERIAL_BEGIN(video); 333 ACPI_SERIAL_BEGIN(video_output); 334 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 335 dss = vo_get_graphics_state(vo->handle); 336 dcs = vo_get_device_status(vo->handle); 337 if (!(dcs & DCS_READY)) 338 dss = DSS_INACTIVE; 339 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 340 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 341 if (lasthand != NULL) 342 vo_set_device_state(lasthand, dss_p); 343 dss_p = dss; 344 lasthand = vo->handle; 345 } 346 } 347 if (lasthand != NULL) 348 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 349 ACPI_SERIAL_END(video_output); 350 ACPI_SERIAL_END(video); 351 break; 352 case VID_NOTIFY_REPROBE: 353 ACPI_SERIAL_BEGIN(video); 354 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 355 vo->handle = NULL; 356 acpi_video_bind_outputs(sc); 357 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 358 if (vo->handle == NULL) { 359 STAILQ_REMOVE(&sc->vid_outputs, vo, 360 acpi_video_output, vo_next); 361 acpi_video_vo_destroy(vo); 362 } 363 } 364 ACPI_SERIAL_END(video); 365 break; 366 default: 367 device_printf(sc->device, "unknown notify event 0x%x\n", 368 notify); 369 } 370} 371 372static void 373acpi_video_power_profile(void *context) 374{ 375 int state; 376 struct acpi_video_softc *sc; 377 struct acpi_video_output *vo; 378 379 sc = context; 380 state = power_profile_get_state(); 381 if (state != POWER_PROFILE_PERFORMANCE && 382 state != POWER_PROFILE_ECONOMY) 383 return; 384 385 ACPI_SERIAL_BEGIN(video); 386 ACPI_SERIAL_BEGIN(video_output); 387 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 388 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 389 vo_set_brightness(vo->handle, 390 state == POWER_PROFILE_ECONOMY ? 391 vo->vo_economy : vo->vo_fullpower); 392 } 393 ACPI_SERIAL_END(video_output); 394 ACPI_SERIAL_END(video); 395} 396 397static void 398acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 399{ 400 struct acpi_video_softc *sc; 401 struct acpi_video_output *vo; 402 403 ACPI_SERIAL_ASSERT(video); 404 sc = context; 405 406 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 407 if (vo->adr == adr) { 408 acpi_video_vo_bind(vo, handle); 409 return; 410 } 411 } 412 vo = acpi_video_vo_init(adr); 413 if (vo != NULL) { 414 acpi_video_vo_bind(vo, handle); 415 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 416 } 417} 418 419static void 420acpi_video_bind_outputs(struct acpi_video_softc *sc) 421{ 422 423 ACPI_SERIAL_ASSERT(video); 424 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 425} 426 427static struct acpi_video_output * 428acpi_video_vo_init(UINT32 adr) 429{ 430 struct acpi_video_output *vn, *vo, *vp; 431 int n, x; 432 char name[8], env[32]; 433 const char *type, *desc; 434 struct acpi_video_output_queue *voqh; 435 436 ACPI_SERIAL_ASSERT(video); 437 438 switch (adr & DOD_DEVID_MASK) { 439 case DOD_DEVID_MONITOR: 440 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 441 /* DOD_DEVID_LCD is a common, backward compatible ID */ 442 desc = "Internal/Integrated Digital Flat Panel"; 443 type = "lcd"; 444 voqh = &lcd_units; 445 } else { 446 desc = "VGA CRT or VESA Compatible Analog Monitor"; 447 type = "crt"; 448 voqh = &crt_units; 449 } 450 break; 451 case DOD_DEVID_TV: 452 desc = "TV/HDTV or Analog-Video Monitor"; 453 type = "tv"; 454 voqh = &tv_units; 455 break; 456 case DOD_DEVID_EXT: 457 desc = "External Digital Monitor"; 458 type = "ext"; 459 voqh = &ext_units; 460 break; 461 case DOD_DEVID_INTDFP: 462 desc = "Internal/Integrated Digital Flat Panel"; 463 type = "lcd"; 464 voqh = &lcd_units; 465 break; 466 default: 467 desc = "unknown output"; 468 type = "out"; 469 voqh = &other_units; 470 } 471 472 n = 0; 473 vp = NULL; 474 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 475 if (vn->vo_unit.num != n) 476 break; 477 vp = vn; 478 n++; 479 } 480 481 snprintf(name, sizeof(name), "%s%d", type, n); 482 483 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 484 if (vo != NULL) { 485 vo->handle = NULL; 486 vo->adr = adr; 487 vo->vo_unit.num = n; 488 vo->vo_brightness = -1; 489 vo->vo_fullpower = -1; /* TODO: override with tunables */ 490 vo->vo_economy = -1; 491 vo->vo_numlevels = 0; 492 vo->vo_levels = NULL; 493 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 494 if (getenv_int(env, &x)) 495 vo->vo_fullpower = x; 496 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 497 if (getenv_int(env, &x)) 498 vo->vo_economy = x; 499 500 sysctl_ctx_init(&vo->vo_sysctl_ctx); 501 if (vp != NULL) 502 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 503 else 504 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 505 if (acpi_video_sysctl_tree != NULL) 506 vo->vo_sysctl_tree = 507 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 508 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 509 OID_AUTO, name, CTLFLAG_RD, 0, desc); 510 if (vo->vo_sysctl_tree != NULL) { 511 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 512 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 513 OID_AUTO, "active", 514 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 515 acpi_video_vo_active_sysctl, "I", 516 "current activity of this device"); 517 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 518 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 519 OID_AUTO, "brightness", 520 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 521 acpi_video_vo_bright_sysctl, "I", 522 "current brightness level"); 523 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 524 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 525 OID_AUTO, "fullpower", 526 CTLTYPE_INT|CTLFLAG_RW, vo, 527 POWER_PROFILE_PERFORMANCE, 528 acpi_video_vo_presets_sysctl, "I", 529 "preset level for full power mode"); 530 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 531 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 532 OID_AUTO, "economy", 533 CTLTYPE_INT|CTLFLAG_RW, vo, 534 POWER_PROFILE_ECONOMY, 535 acpi_video_vo_presets_sysctl, "I", 536 "preset level for economy mode"); 537 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 538 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 539 OID_AUTO, "levels", 540 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 541 acpi_video_vo_levels_sysctl, "I", 542 "supported brightness levels"); 543 } else 544 printf("%s: sysctl node creation failed\n", type); 545 } else 546 printf("%s: softc allocation failed\n", type); 547 548 if (bootverbose) { 549 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 550 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 551 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 552 if (adr & DOD_BIOS) 553 printf(", detectable by BIOS"); 554 if (adr & DOD_NONVGA) 555 printf(" (Non-VGA output device whose power " 556 "is related to the VGA device)"); 557 printf(", head #%d\n", 558 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 559 } 560 return (vo); 561} 562 563static void 564acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 565{ 566 567 ACPI_SERIAL_BEGIN(video_output); 568 if (vo->vo_levels != NULL) 569 AcpiOsFree(vo->vo_levels); 570 vo->handle = handle; 571 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 572 if (vo->vo_numlevels >= 2) { 573 if (vo->vo_fullpower == -1 574 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 575 /* XXX - can't deal with rebinding... */ 576 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 577 if (vo->vo_economy == -1 578 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 579 /* XXX - see above. */ 580 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 581 } 582 if (vo->vo_levels != NULL) 583 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 584 acpi_video_vo_notify_handler, vo); 585 ACPI_SERIAL_END(video_output); 586} 587 588static void 589acpi_video_vo_destroy(struct acpi_video_output *vo) 590{ 591 struct acpi_video_output_queue *voqh; 592 593 ACPI_SERIAL_ASSERT(video); 594 if (vo->vo_sysctl_tree != NULL) { 595 vo->vo_sysctl_tree = NULL; 596 sysctl_ctx_free(&vo->vo_sysctl_ctx); 597 } 598 if (vo->vo_levels != NULL) { 599 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 600 acpi_video_vo_notify_handler); 601 AcpiOsFree(vo->vo_levels); 602 } 603 604 switch (vo->adr & DOD_DEVID_MASK) { 605 case DOD_DEVID_MONITOR: 606 voqh = &crt_units; 607 break; 608 case DOD_DEVID_TV: 609 voqh = &tv_units; 610 break; 611 case DOD_DEVID_EXT: 612 voqh = &ext_units; 613 break; 614 case DOD_DEVID_INTDFP: 615 voqh = &lcd_units; 616 break; 617 default: 618 voqh = &other_units; 619 } 620 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 621 free(vo, M_ACPIVIDEO); 622} 623 624static int 625acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 626{ 627 int i; 628 629 ACPI_SERIAL_ASSERT(video_output); 630 if (vo->vo_levels == NULL) 631 return (ENODEV); 632 for (i = 0; i < vo->vo_numlevels; i++) 633 if (vo->vo_levels[i] == level) 634 return (0); 635 return (EINVAL); 636} 637 638static void 639acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 640{ 641 struct acpi_video_output *vo; 642 int i, j, level, new_level; 643 644 vo = context; 645 ACPI_SERIAL_BEGIN(video_output); 646 if (vo->handle != handle) 647 goto out; 648 649 switch (notify) { 650 case VID_NOTIFY_CYCLE_BRN: 651 if (vo->vo_numlevels <= 3) 652 goto out; 653 /* FALLTHROUGH */ 654 case VID_NOTIFY_INC_BRN: 655 case VID_NOTIFY_DEC_BRN: 656 case VID_NOTIFY_ZERO_BRN: 657 if (vo->vo_levels == NULL) 658 goto out; 659 level = vo_get_brightness(handle); 660 if (level < 0) 661 goto out; 662 break; 663 default: 664 printf("unknown notify event 0x%x from %s\n", 665 notify, acpi_name(handle)); 666 goto out; 667 } 668 669 new_level = level; 670 switch (notify) { 671 case VID_NOTIFY_CYCLE_BRN: 672 for (i = 2; i < vo->vo_numlevels; i++) 673 if (vo->vo_levels[i] == level) { 674 new_level = vo->vo_numlevels > i + 1 ? 675 vo->vo_levels[i + 1] : vo->vo_levels[2]; 676 break; 677 } 678 break; 679 case VID_NOTIFY_INC_BRN: 680 case VID_NOTIFY_DEC_BRN: 681 for (i = 0; i < vo->vo_numlevels; i++) { 682 j = vo->vo_levels[i]; 683 if (notify == VID_NOTIFY_INC_BRN) { 684 if (j > level && 685 (j < new_level || level == new_level)) 686 new_level = j; 687 } else { 688 if (j < level && 689 (j > new_level || level == new_level)) 690 new_level = j; 691 } 692 } 693 break; 694 case VID_NOTIFY_ZERO_BRN: 695 for (i = 0; i < vo->vo_numlevels; i++) 696 if (vo->vo_levels[i] == 0) { 697 new_level = 0; 698 break; 699 } 700 break; 701 } 702 if (new_level != level) { 703 vo_set_brightness(handle, new_level); 704 vo->vo_brightness = new_level; 705 } 706 707out: 708 ACPI_SERIAL_END(video_output); 709} 710 711/* ARGSUSED */ 712static int 713acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 714{ 715 struct acpi_video_output *vo; 716 int state, err; 717 718 vo = (struct acpi_video_output *)arg1; 719 if (vo->handle == NULL) 720 return (ENXIO); 721 ACPI_SERIAL_BEGIN(video_output); 722 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 723 err = sysctl_handle_int(oidp, &state, 0, req); 724 if (err != 0 || req->newptr == NULL) 725 goto out; 726 vo_set_device_state(vo->handle, 727 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 728out: 729 ACPI_SERIAL_END(video_output); 730 return (err); 731} 732 733/* ARGSUSED */ 734static int 735acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 736{ 737 struct acpi_video_output *vo; 738 int level, preset, err; 739 740 vo = (struct acpi_video_output *)arg1; 741 ACPI_SERIAL_BEGIN(video_output); 742 if (vo->handle == NULL) { 743 err = ENXIO; 744 goto out; 745 } 746 if (vo->vo_levels == NULL) { 747 err = ENODEV; 748 goto out; 749 } 750 751 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 752 vo->vo_economy : vo->vo_fullpower; 753 level = vo->vo_brightness; 754 if (level == -1) 755 level = preset; 756 757 err = sysctl_handle_int(oidp, &level, 0, req); 758 if (err != 0 || req->newptr == NULL) 759 goto out; 760 if (level < -1 || level > 100) { 761 err = EINVAL; 762 goto out; 763 } 764 765 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 766 goto out; 767 vo->vo_brightness = level; 768 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 769 770out: 771 ACPI_SERIAL_END(video_output); 772 return (err); 773} 774 775static int 776acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 777{ 778 struct acpi_video_output *vo; 779 int i, level, *preset, err; 780 781 vo = (struct acpi_video_output *)arg1; 782 ACPI_SERIAL_BEGIN(video_output); 783 if (vo->handle == NULL) { 784 err = ENXIO; 785 goto out; 786 } 787 if (vo->vo_levels == NULL) { 788 err = ENODEV; 789 goto out; 790 } 791 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 792 &vo->vo_economy : &vo->vo_fullpower; 793 level = *preset; 794 err = sysctl_handle_int(oidp, &level, 0, req); 795 if (err != 0 || req->newptr == NULL) 796 goto out; 797 if (level < -1 || level > 100) { 798 err = EINVAL; 799 goto out; 800 } 801 if (level == -1) { 802 i = (arg2 == POWER_PROFILE_ECONOMY) ? 803 BCL_ECONOMY : BCL_FULLPOWER; 804 level = vo->vo_levels[i]; 805 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 806 goto out; 807 808 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 809 vo_set_brightness(vo->handle, level); 810 *preset = level; 811 812out: 813 ACPI_SERIAL_END(video_output); 814 return (err); 815} 816 817/* ARGSUSED */ 818static int 819acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 820{ 821 struct acpi_video_output *vo; 822 int err; 823 824 vo = (struct acpi_video_output *)arg1; 825 ACPI_SERIAL_BEGIN(video_output); 826 if (vo->vo_levels == NULL) { 827 err = ENODEV; 828 goto out; 829 } 830 if (req->newptr != NULL) { 831 err = EPERM; 832 goto out; 833 } 834 err = sysctl_handle_opaque(oidp, vo->vo_levels, 835 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 836 837out: 838 ACPI_SERIAL_END(video_output); 839 return (err); 840} 841 842static void 843vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 844{ 845 ACPI_STATUS status; 846 847 status = acpi_SetInteger(handle, "_DOS", policy); 848 if (ACPI_FAILURE(status)) 849 printf("can't evaluate %s._DOS - %s\n", 850 acpi_name(handle), AcpiFormatException(status)); 851} 852 853struct enum_callback_arg { 854 void (*callback)(ACPI_HANDLE, UINT32, void *); 855 void *context; 856 ACPI_OBJECT *dod_pkg; 857 int count; 858}; 859 860static ACPI_STATUS 861vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 862 void *context, void **retp __unused) 863{ 864 ACPI_STATUS status; 865 UINT32 adr, val; 866 struct enum_callback_arg *argset; 867 size_t i; 868 869 ACPI_SERIAL_ASSERT(video); 870 argset = context; 871 status = acpi_GetInteger(handle, "_ADR", &adr); 872 if (ACPI_FAILURE(status)) 873 return (AE_OK); 874 875 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 876 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 877 (val & DOD_DEVID_MASK_FULL) == adr) { 878 argset->callback(handle, val, argset->context); 879 argset->count++; 880 } 881 } 882 883 return (AE_OK); 884} 885 886static int 887vid_enum_outputs(ACPI_HANDLE handle, 888 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 889{ 890 ACPI_STATUS status; 891 ACPI_BUFFER dod_buf; 892 ACPI_OBJECT *res; 893 struct enum_callback_arg argset; 894 895 ACPI_SERIAL_ASSERT(video); 896 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 897 dod_buf.Pointer = NULL; 898 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 899 if (ACPI_FAILURE(status)) { 900 if (status != AE_NOT_FOUND) 901 printf("can't evaluate %s._DOD - %s\n", 902 acpi_name(handle), AcpiFormatException(status)); 903 argset.count = -1; 904 goto out; 905 } 906 res = (ACPI_OBJECT *)dod_buf.Pointer; 907 if (!ACPI_PKG_VALID(res, 1)) { 908 printf("evaluation of %s._DOD makes no sense\n", 909 acpi_name(handle)); 910 argset.count = -1; 911 goto out; 912 } 913 if (callback == NULL) { 914 argset.count = res->Package.Count; 915 goto out; 916 } 917 argset.callback = callback; 918 argset.context = context; 919 argset.dod_pkg = res; 920 argset.count = 0; 921 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 922 vid_enum_outputs_subr, NULL, &argset, NULL); 923 if (ACPI_FAILURE(status)) 924 printf("failed walking down %s - %s\n", 925 acpi_name(handle), AcpiFormatException(status)); 926out: 927 if (dod_buf.Pointer != NULL) 928 AcpiOsFree(dod_buf.Pointer); 929 return (argset.count); 930} 931 932static int 933vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 934{ 935 ACPI_STATUS status; 936 ACPI_BUFFER bcl_buf; 937 ACPI_OBJECT *res; 938 int num, i, n, *levels; 939 940 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 941 bcl_buf.Pointer = NULL; 942 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 943 if (ACPI_FAILURE(status)) { 944 if (status != AE_NOT_FOUND) 945 printf("can't evaluate %s._BCL - %s\n", 946 acpi_name(handle), AcpiFormatException(status)); 947 num = -1; 948 goto out; 949 } 950 res = (ACPI_OBJECT *)bcl_buf.Pointer; 951 if (!ACPI_PKG_VALID(res, 2)) { 952 printf("evaluation of %s._BCL makes no sense\n", 953 acpi_name(handle)); 954 num = -1; 955 goto out; 956 } 957 num = res->Package.Count; 958 if (levelp == NULL) 959 goto out; 960 levels = AcpiOsAllocate(num * sizeof(*levels)); 961 if (levels == NULL) { 962 num = -1; 963 goto out; 964 } 965 for (i = 0, n = 0; i < num; i++) 966 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 967 n++; 968 if (n < 2) { 969 num = -1; 970 AcpiOsFree(levels); 971 } else { 972 num = n; 973 *levelp = levels; 974 } 975out: 976 if (bcl_buf.Pointer != NULL) 977 AcpiOsFree(bcl_buf.Pointer); 978 979 return (num); 980} 981 982static int 983vo_get_brightness(ACPI_HANDLE handle) 984{ 985 UINT32 level; 986 ACPI_STATUS status; 987 988 ACPI_SERIAL_ASSERT(video_output); 989 status = acpi_GetInteger(handle, "_BQC", &level); 990 if (ACPI_FAILURE(status)) { 991 printf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 992 AcpiFormatException(status)); 993 return (-1); 994 } 995 if (level > 100) 996 return (-1); 997 998 return (level); 999} 1000 1001static void 1002vo_set_brightness(ACPI_HANDLE handle, int level) 1003{ 1004 ACPI_STATUS status; 1005 1006 ACPI_SERIAL_ASSERT(video_output); 1007 status = acpi_SetInteger(handle, "_BCM", level); 1008 if (ACPI_FAILURE(status)) 1009 printf("can't evaluate %s._BCM - %s\n", 1010 acpi_name(handle), AcpiFormatException(status)); 1011} 1012 1013static UINT32 1014vo_get_device_status(ACPI_HANDLE handle) 1015{ 1016 UINT32 dcs; 1017 ACPI_STATUS status; 1018 1019 ACPI_SERIAL_ASSERT(video_output); 1020 dcs = 0; 1021 status = acpi_GetInteger(handle, "_DCS", &dcs); 1022 if (ACPI_FAILURE(status)) 1023 printf("can't evaluate %s._DCS - %s\n", 1024 acpi_name(handle), AcpiFormatException(status)); 1025 1026 return (dcs); 1027} 1028 1029static UINT32 1030vo_get_graphics_state(ACPI_HANDLE handle) 1031{ 1032 UINT32 dgs; 1033 ACPI_STATUS status; 1034 1035 dgs = 0; 1036 status = acpi_GetInteger(handle, "_DGS", &dgs); 1037 if (ACPI_FAILURE(status)) 1038 printf("can't evaluate %s._DGS - %s\n", 1039 acpi_name(handle), AcpiFormatException(status)); 1040 1041 return (dgs); 1042} 1043 1044static void 1045vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1046{ 1047 ACPI_STATUS status; 1048 1049 ACPI_SERIAL_ASSERT(video_output); 1050 status = acpi_SetInteger(handle, "_DSS", state); 1051 if (ACPI_FAILURE(status)) 1052 printf("can't evaluate %s._DSS - %s\n", 1053 acpi_name(handle), AcpiFormatException(status)); 1054} 1055