acpi_video.c revision 295938
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 295938 2016-02-23 22:50:45Z 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_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 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 602 acpi_video_vo_notify_handler); 603 AcpiOsFree(vo->vo_levels); 604 vo->vo_levels = NULL; 605 } 606 vo->handle = handle; 607 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 608 if (vo->vo_numlevels >= 2) { 609 if (vo->vo_fullpower == -1 || 610 acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) { 611 /* XXX - can't deal with rebinding... */ 612 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 613 } 614 if (vo->vo_economy == -1 || 615 acpi_video_vo_check_level(vo, vo->vo_economy) != 0) { 616 /* XXX - see above. */ 617 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 618 } 619 } 620 if (vo->vo_levels != NULL) 621 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 622 acpi_video_vo_notify_handler, vo); 623 ACPI_SERIAL_END(video_output); 624} 625 626static void 627acpi_video_vo_destroy(struct acpi_video_output *vo) 628{ 629 struct acpi_video_output_queue *voqh; 630 631 ACPI_SERIAL_ASSERT(video); 632 if (vo->vo_sysctl_tree != NULL) { 633 vo->vo_sysctl_tree = NULL; 634 sysctl_ctx_free(&vo->vo_sysctl_ctx); 635 } 636 if (vo->vo_levels != NULL) { 637 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 638 acpi_video_vo_notify_handler); 639 AcpiOsFree(vo->vo_levels); 640 } 641 642 switch (vo->adr & DOD_DEVID_MASK) { 643 case DOD_DEVID_MONITOR: 644 voqh = &crt_units; 645 break; 646 case DOD_DEVID_TV: 647 voqh = &tv_units; 648 break; 649 case DOD_DEVID_EXT: 650 voqh = &ext_units; 651 break; 652 case DOD_DEVID_INTDFP: 653 voqh = &lcd_units; 654 break; 655 default: 656 voqh = &other_units; 657 } 658 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 659 free(vo, M_ACPIVIDEO); 660} 661 662static int 663acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 664{ 665 int i; 666 667 ACPI_SERIAL_ASSERT(video_output); 668 if (vo->vo_levels == NULL) 669 return (ENODEV); 670 for (i = 0; i < vo->vo_numlevels; i++) 671 if (vo->vo_levels[i] == level) 672 return (0); 673 return (EINVAL); 674} 675 676static void 677acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 678{ 679 struct acpi_video_output *vo; 680 int i, j, level, new_level; 681 682 vo = context; 683 ACPI_SERIAL_BEGIN(video_output); 684 if (vo->handle != handle) 685 goto out; 686 687 switch (notify) { 688 case VID_NOTIFY_CYCLE_BRN: 689 if (vo->vo_numlevels <= 3) 690 goto out; 691 /* FALLTHROUGH */ 692 case VID_NOTIFY_INC_BRN: 693 case VID_NOTIFY_DEC_BRN: 694 case VID_NOTIFY_ZERO_BRN: 695 if (vo->vo_levels == NULL) 696 goto out; 697 level = vo_get_brightness(handle); 698 if (level < 0) 699 goto out; 700 break; 701 default: 702 printf("unknown notify event 0x%x from %s\n", 703 notify, acpi_name(handle)); 704 goto out; 705 } 706 707 new_level = level; 708 switch (notify) { 709 case VID_NOTIFY_CYCLE_BRN: 710 for (i = 2; i < vo->vo_numlevels; i++) 711 if (vo->vo_levels[i] == level) { 712 new_level = vo->vo_numlevels > i + 1 ? 713 vo->vo_levels[i + 1] : vo->vo_levels[2]; 714 break; 715 } 716 break; 717 case VID_NOTIFY_INC_BRN: 718 case VID_NOTIFY_DEC_BRN: 719 for (i = 0; i < vo->vo_numlevels; i++) { 720 j = vo->vo_levels[i]; 721 if (notify == VID_NOTIFY_INC_BRN) { 722 if (j > level && 723 (j < new_level || level == new_level)) 724 new_level = j; 725 } else { 726 if (j < level && 727 (j > new_level || level == new_level)) 728 new_level = j; 729 } 730 } 731 break; 732 case VID_NOTIFY_ZERO_BRN: 733 for (i = 0; i < vo->vo_numlevels; i++) 734 if (vo->vo_levels[i] == 0) { 735 new_level = 0; 736 break; 737 } 738 break; 739 } 740 if (new_level != level) { 741 vo_set_brightness(handle, new_level); 742 vo->vo_brightness = new_level; 743 } 744 745out: 746 ACPI_SERIAL_END(video_output); 747} 748 749/* ARGSUSED */ 750static int 751acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 752{ 753 struct acpi_video_output *vo; 754 int state, err; 755 756 vo = (struct acpi_video_output *)arg1; 757 if (vo->handle == NULL) 758 return (ENXIO); 759 ACPI_SERIAL_BEGIN(video_output); 760 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 761 err = sysctl_handle_int(oidp, &state, 0, req); 762 if (err != 0 || req->newptr == NULL) 763 goto out; 764 vo_set_device_state(vo->handle, 765 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 766out: 767 ACPI_SERIAL_END(video_output); 768 return (err); 769} 770 771/* ARGSUSED */ 772static int 773acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 774{ 775 struct acpi_video_output *vo; 776 int level, preset, err; 777 778 vo = (struct acpi_video_output *)arg1; 779 ACPI_SERIAL_BEGIN(video_output); 780 if (vo->handle == NULL) { 781 err = ENXIO; 782 goto out; 783 } 784 if (vo->vo_levels == NULL) { 785 err = ENODEV; 786 goto out; 787 } 788 789 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 790 vo->vo_economy : vo->vo_fullpower; 791 level = vo->vo_brightness; 792 if (level == -1) 793 level = preset; 794 795 err = sysctl_handle_int(oidp, &level, 0, req); 796 if (err != 0 || req->newptr == NULL) 797 goto out; 798 if (level < -1 || level > 100) { 799 err = EINVAL; 800 goto out; 801 } 802 803 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 804 goto out; 805 vo->vo_brightness = level; 806 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 807 808out: 809 ACPI_SERIAL_END(video_output); 810 return (err); 811} 812 813static int 814acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 815{ 816 struct acpi_video_output *vo; 817 int i, level, *preset, err; 818 819 vo = (struct acpi_video_output *)arg1; 820 ACPI_SERIAL_BEGIN(video_output); 821 if (vo->handle == NULL) { 822 err = ENXIO; 823 goto out; 824 } 825 if (vo->vo_levels == NULL) { 826 err = ENODEV; 827 goto out; 828 } 829 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 830 &vo->vo_economy : &vo->vo_fullpower; 831 level = *preset; 832 err = sysctl_handle_int(oidp, &level, 0, req); 833 if (err != 0 || req->newptr == NULL) 834 goto out; 835 if (level < -1 || level > 100) { 836 err = EINVAL; 837 goto out; 838 } 839 if (level == -1) { 840 i = (arg2 == POWER_PROFILE_ECONOMY) ? 841 BCL_ECONOMY : BCL_FULLPOWER; 842 level = vo->vo_levels[i]; 843 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 844 goto out; 845 846 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 847 vo_set_brightness(vo->handle, level); 848 *preset = level; 849 850out: 851 ACPI_SERIAL_END(video_output); 852 return (err); 853} 854 855/* ARGSUSED */ 856static int 857acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 858{ 859 struct acpi_video_output *vo; 860 int err; 861 862 vo = (struct acpi_video_output *)arg1; 863 ACPI_SERIAL_BEGIN(video_output); 864 if (vo->vo_levels == NULL) { 865 err = ENODEV; 866 goto out; 867 } 868 if (req->newptr != NULL) { 869 err = EPERM; 870 goto out; 871 } 872 err = sysctl_handle_opaque(oidp, vo->vo_levels, 873 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 874 875out: 876 ACPI_SERIAL_END(video_output); 877 return (err); 878} 879 880static void 881vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 882{ 883 ACPI_STATUS status; 884 885 status = acpi_SetInteger(handle, "_DOS", policy); 886 if (ACPI_FAILURE(status)) 887 printf("can't evaluate %s._DOS - %s\n", 888 acpi_name(handle), AcpiFormatException(status)); 889} 890 891struct enum_callback_arg { 892 void (*callback)(ACPI_HANDLE, UINT32, void *); 893 void *context; 894 ACPI_OBJECT *dod_pkg; 895 int count; 896}; 897 898static ACPI_STATUS 899vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 900 void *context, void **retp __unused) 901{ 902 ACPI_STATUS status; 903 UINT32 adr, val; 904 struct enum_callback_arg *argset; 905 size_t i; 906 907 ACPI_SERIAL_ASSERT(video); 908 argset = context; 909 status = acpi_GetInteger(handle, "_ADR", &adr); 910 if (ACPI_FAILURE(status)) 911 return (AE_OK); 912 913 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 914 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 915 (val & DOD_DEVID_MASK_FULL) == 916 (adr & DOD_DEVID_MASK_FULL)) { 917 argset->callback(handle, val, argset->context); 918 argset->count++; 919 } 920 } 921 922 return (AE_OK); 923} 924 925static int 926vid_enum_outputs(ACPI_HANDLE handle, 927 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 928{ 929 ACPI_STATUS status; 930 ACPI_BUFFER dod_buf; 931 ACPI_OBJECT *res; 932 struct enum_callback_arg argset; 933 934 ACPI_SERIAL_ASSERT(video); 935 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 936 dod_buf.Pointer = NULL; 937 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 938 if (ACPI_FAILURE(status)) { 939 if (status != AE_NOT_FOUND) 940 printf("can't evaluate %s._DOD - %s\n", 941 acpi_name(handle), AcpiFormatException(status)); 942 argset.count = -1; 943 goto out; 944 } 945 res = (ACPI_OBJECT *)dod_buf.Pointer; 946 if (!ACPI_PKG_VALID(res, 1)) { 947 printf("evaluation of %s._DOD makes no sense\n", 948 acpi_name(handle)); 949 argset.count = -1; 950 goto out; 951 } 952 if (callback == NULL) { 953 argset.count = res->Package.Count; 954 goto out; 955 } 956 argset.callback = callback; 957 argset.context = context; 958 argset.dod_pkg = res; 959 argset.count = 0; 960 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 961 vid_enum_outputs_subr, NULL, &argset, NULL); 962 if (ACPI_FAILURE(status)) 963 printf("failed walking down %s - %s\n", 964 acpi_name(handle), AcpiFormatException(status)); 965out: 966 if (dod_buf.Pointer != NULL) 967 AcpiOsFree(dod_buf.Pointer); 968 return (argset.count); 969} 970 971static int 972vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 973{ 974 ACPI_STATUS status; 975 ACPI_BUFFER bcl_buf; 976 ACPI_OBJECT *res; 977 int num, i, n, *levels; 978 979 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 980 bcl_buf.Pointer = NULL; 981 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 982 if (ACPI_FAILURE(status)) { 983 if (status != AE_NOT_FOUND) 984 printf("can't evaluate %s._BCL - %s\n", 985 acpi_name(handle), AcpiFormatException(status)); 986 goto out; 987 } 988 res = (ACPI_OBJECT *)bcl_buf.Pointer; 989 if (!ACPI_PKG_VALID(res, 2)) { 990 printf("evaluation of %s._BCL makes no sense\n", 991 acpi_name(handle)); 992 goto out; 993 } 994 num = res->Package.Count; 995 if (num < 2 || levelp == NULL) 996 goto out; 997 levels = AcpiOsAllocate(num * sizeof(*levels)); 998 if (levels == NULL) 999 goto out; 1000 for (i = 0, n = 0; i < num; i++) 1001 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 1002 n++; 1003 if (n < 2) { 1004 AcpiOsFree(levels); 1005 goto out; 1006 } 1007 *levelp = levels; 1008 return (n); 1009 1010out: 1011 if (bcl_buf.Pointer != NULL) 1012 AcpiOsFree(bcl_buf.Pointer); 1013 return (0); 1014} 1015 1016static int 1017vo_get_brightness(ACPI_HANDLE handle) 1018{ 1019 UINT32 level; 1020 ACPI_STATUS status; 1021 1022 ACPI_SERIAL_ASSERT(video_output); 1023 status = acpi_GetInteger(handle, "_BQC", &level); 1024 if (ACPI_FAILURE(status)) { 1025 printf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 1026 AcpiFormatException(status)); 1027 return (-1); 1028 } 1029 if (level > 100) 1030 return (-1); 1031 1032 return (level); 1033} 1034 1035static void 1036vo_set_brightness(ACPI_HANDLE handle, int level) 1037{ 1038 ACPI_STATUS status; 1039 1040 ACPI_SERIAL_ASSERT(video_output); 1041 status = acpi_SetInteger(handle, "_BCM", level); 1042 if (ACPI_FAILURE(status)) 1043 printf("can't evaluate %s._BCM - %s\n", 1044 acpi_name(handle), AcpiFormatException(status)); 1045} 1046 1047static UINT32 1048vo_get_device_status(ACPI_HANDLE handle) 1049{ 1050 UINT32 dcs; 1051 ACPI_STATUS status; 1052 1053 ACPI_SERIAL_ASSERT(video_output); 1054 dcs = 0; 1055 status = acpi_GetInteger(handle, "_DCS", &dcs); 1056 if (ACPI_FAILURE(status)) 1057 printf("can't evaluate %s._DCS - %s\n", 1058 acpi_name(handle), AcpiFormatException(status)); 1059 1060 return (dcs); 1061} 1062 1063static UINT32 1064vo_get_graphics_state(ACPI_HANDLE handle) 1065{ 1066 UINT32 dgs; 1067 ACPI_STATUS status; 1068 1069 dgs = 0; 1070 status = acpi_GetInteger(handle, "_DGS", &dgs); 1071 if (ACPI_FAILURE(status)) 1072 printf("can't evaluate %s._DGS - %s\n", 1073 acpi_name(handle), AcpiFormatException(status)); 1074 1075 return (dgs); 1076} 1077 1078static void 1079vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1080{ 1081 ACPI_STATUS status; 1082 1083 ACPI_SERIAL_ASSERT(video_output); 1084 status = acpi_SetInteger(handle, "_DSS", state); 1085 if (ACPI_FAILURE(status)) 1086 printf("can't evaluate %s._DSS - %s\n", 1087 acpi_name(handle), AcpiFormatException(status)); 1088} 1089