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 * $FreeBSD: head/sys/dev/acpica/acpi_video.c 258780 2013-11-30 22:17:27Z eadler $ 27 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/bus.h> 35 #include <sys/power.h> 36 #include <sys/queue.h> 37 #include <sys/sysctl.h> 38 39 #include "acpi.h" 40 #include "acpivar.h" 41 42 /* ACPI video extension driver. */ 43 struct acpi_video_output { 44 ACPI_HANDLE handle; 45 UINT32 adr; 46 STAILQ_ENTRY(acpi_video_output) vo_next; 47 struct { 48 int num; 49 STAILQ_ENTRY(acpi_video_output) next; 50 } vo_unit; 51 int vo_brightness; 52 int vo_fullpower; 53 int vo_economy; 54 int vo_numlevels; 55 int *vo_levels; 56 struct sysctl_ctx_list vo_sysctl_ctx; 57 struct sysctl_oid *vo_sysctl_tree; 58 }; 59 60 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 61 62 struct acpi_video_softc { 63 device_t device; 64 ACPI_HANDLE handle; 65 struct acpi_video_output_queue vid_outputs; 66 eventhandler_tag vid_pwr_evh; 67 }; 68 69 /* interfaces */ 70 static int acpi_video_modevent(struct module*, int, void *); 71 static void acpi_video_identify(driver_t *driver, device_t parent); 72 static int acpi_video_probe(device_t); 73 static int acpi_video_attach(device_t); 74 static int acpi_video_detach(device_t); 75 static int acpi_video_resume(device_t); 76 static int acpi_video_shutdown(device_t); 77 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 78 static void acpi_video_power_profile(void *); 79 static void acpi_video_bind_outputs(struct acpi_video_softc *); 80 static struct acpi_video_output *acpi_video_vo_init(UINT32); 81 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 82 static void acpi_video_vo_destroy(struct acpi_video_output *); 83 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 84 static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 85 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 86 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 87 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 88 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 89 90 /* operations */ 91 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 92 static int vid_enum_outputs(ACPI_HANDLE, 93 void(*)(ACPI_HANDLE, UINT32, void *), void *); 94 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 95 static int vo_get_brightness(ACPI_HANDLE); 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 #define VID_NOTIFY_CYCLE_BRN 0x85 105 #define VID_NOTIFY_INC_BRN 0x86 106 #define VID_NOTIFY_DEC_BRN 0x87 107 #define VID_NOTIFY_ZERO_BRN 0x88 108 109 /* _DOS (Enable/Disable Output Switching) argument bits */ 110 #define DOS_SWITCH_MASK 3 111 #define DOS_SWITCH_BY_OSPM 0 112 #define DOS_SWITCH_BY_BIOS 1 113 #define DOS_SWITCH_LOCKED 2 114 #define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 115 116 /* _DOD and subdev's _ADR */ 117 #define DOD_DEVID_MASK 0x0f00 118 #define DOD_DEVID_MASK_FULL 0xffff 119 #define DOD_DEVID_MASK_DISPIDX 0x000f 120 #define DOD_DEVID_MASK_DISPPORT 0x00f0 121 #define DOD_DEVID_MONITOR 0x0100 122 #define DOD_DEVID_LCD 0x0110 123 #define DOD_DEVID_TV 0x0200 124 #define DOD_DEVID_EXT 0x0300 125 #define DOD_DEVID_INTDFP 0x0400 126 #define DOD_BIOS (1 << 16) 127 #define DOD_NONVGA (1 << 17) 128 #define DOD_HEAD_ID_SHIFT 18 129 #define DOD_HEAD_ID_BITS 3 130 #define DOD_HEAD_ID_MASK \ 131 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 132 #define DOD_DEVID_SCHEME_STD (1 << 31) 133 134 /* _BCL related constants */ 135 #define BCL_FULLPOWER 0 136 #define BCL_ECONOMY 1 137 138 /* _DCS (Device Currrent Status) value bits and masks. */ 139 #define DCS_EXISTS (1 << 0) 140 #define DCS_ACTIVE (1 << 1) 141 #define DCS_READY (1 << 2) 142 #define DCS_FUNCTIONAL (1 << 3) 143 #define DCS_ATTACHED (1 << 4) 144 145 /* _DSS (Device Set Status) argument bits and masks. */ 146 #define DSS_INACTIVE 0 147 #define DSS_ACTIVE (1 << 0) 148 #define DSS_SETNEXT (1 << 30) 149 #define DSS_COMMIT (1 << 31) 150 151 static device_method_t acpi_video_methods[] = { 152 DEVMETHOD(device_identify, acpi_video_identify), 153 DEVMETHOD(device_probe, acpi_video_probe), 154 DEVMETHOD(device_attach, acpi_video_attach), 155 DEVMETHOD(device_detach, acpi_video_detach), 156 DEVMETHOD(device_resume, acpi_video_resume), 157 DEVMETHOD(device_shutdown, acpi_video_shutdown), 158 159 DEVMETHOD_END 160 }; 161 162 static driver_t acpi_video_driver = { 163 "acpi_video", 164 acpi_video_methods, 165 sizeof(struct acpi_video_softc), 166 }; 167 168 static devclass_t acpi_video_devclass; 169 170 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 171 acpi_video_modevent, NULL); 172 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 173 174 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 175 static struct sysctl_oid *acpi_video_sysctl_tree; 176 static 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 */ 184 ACPI_SERIAL_DECL(video, "ACPI video"); 185 ACPI_SERIAL_DECL(video_output, "ACPI video output"); 186 static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 187 188 static int 189 acpi_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 } 213 214 static void 215 acpi_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 } 221 222 static int 223 acpi_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 } 239 240 static int 241 acpi_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_INIT(video); 252 ACPI_SERIAL_INIT(video_output); 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 } 286 287 static int 288 acpi_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_MUTABLE(vo, &sc->vid_outputs, vo_next, vn) { 302 acpi_video_vo_destroy(vo); 303 } 304 ACPI_SERIAL_END(video); 305 306 return (0); 307 } 308 309 static int 310 acpi_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_MUTABLE(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 } 338 339 static int 340 acpi_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 } 349 350 static void 351 acpi_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_MUTABLE(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: %#x\n", notify); 400 } 401 } 402 403 static void 404 acpi_video_power_profile(void *context) 405 { 406 int state; 407 struct acpi_video_softc *sc; 408 struct acpi_video_output *vo; 409 410 sc = context; 411 state = power_profile_get_state(); 412 if (state != POWER_PROFILE_PERFORMANCE && 413 state != POWER_PROFILE_ECONOMY) 414 return; 415 416 ACPI_SERIAL_BEGIN(video); 417 ACPI_SERIAL_BEGIN(video_output); 418 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 419 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 420 vo_set_brightness(vo->handle, 421 state == POWER_PROFILE_ECONOMY ? 422 vo->vo_economy : vo->vo_fullpower); 423 } 424 ACPI_SERIAL_END(video_output); 425 ACPI_SERIAL_END(video); 426 } 427 428 static void 429 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 430 { 431 struct acpi_video_softc *sc; 432 struct acpi_video_output *vo; 433 434 ACPI_SERIAL_ASSERT(video); 435 sc = context; 436 437 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 438 if (vo->adr == adr) { 439 acpi_video_vo_bind(vo, handle); 440 return; 441 } 442 } 443 vo = acpi_video_vo_init(adr); 444 if (vo != NULL) { 445 acpi_video_vo_bind(vo, handle); 446 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 447 } 448 } 449 450 static void 451 acpi_video_bind_outputs(struct acpi_video_softc *sc) 452 { 453 ACPI_SERIAL_ASSERT(video); 454 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 455 } 456 457 static struct acpi_video_output * 458 acpi_video_vo_init(UINT32 adr) 459 { 460 struct acpi_video_output *vn, *vo, *vp; 461 int n, x; 462 char name[8], env[32]; 463 const char *type, *desc; 464 struct acpi_video_output_queue *voqh; 465 466 ACPI_SERIAL_ASSERT(video); 467 468 switch (adr & DOD_DEVID_MASK) { 469 case DOD_DEVID_MONITOR: 470 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 471 /* DOD_DEVID_LCD is a common, backward compatible ID */ 472 desc = "Internal/Integrated Digital Flat Panel"; 473 type = "lcd"; 474 voqh = &lcd_units; 475 } else { 476 desc = "VGA CRT or VESA Compatible Analog Monitor"; 477 type = "crt"; 478 voqh = &crt_units; 479 } 480 break; 481 case DOD_DEVID_TV: 482 desc = "TV/HDTV or Analog-Video Monitor"; 483 type = "tv"; 484 voqh = &tv_units; 485 break; 486 case DOD_DEVID_EXT: 487 desc = "External Digital Monitor"; 488 type = "ext"; 489 voqh = &ext_units; 490 break; 491 case DOD_DEVID_INTDFP: 492 desc = "Internal/Integrated Digital Flat Panel"; 493 type = "lcd"; 494 voqh = &lcd_units; 495 break; 496 default: 497 desc = "unknown output"; 498 type = "out"; 499 voqh = &other_units; 500 } 501 502 n = 0; 503 vp = NULL; 504 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 505 if (vn->vo_unit.num != n) 506 break; 507 vp = vn; 508 n++; 509 } 510 511 ksnprintf(name, sizeof(name), "%s%d", type, n); 512 513 vo = kmalloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 514 if (vo != NULL) { 515 vo->handle = NULL; 516 vo->adr = adr; 517 vo->vo_unit.num = n; 518 vo->vo_brightness = -1; 519 vo->vo_fullpower = -1; /* TODO: override with tunables */ 520 vo->vo_economy = -1; 521 vo->vo_numlevels = 0; 522 vo->vo_levels = NULL; 523 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 524 if (kgetenv_int(env, &x)) 525 vo->vo_fullpower = x; 526 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 527 if (kgetenv_int(env, &x)) 528 vo->vo_economy = x; 529 530 sysctl_ctx_init(&vo->vo_sysctl_ctx); 531 if (vp != NULL) 532 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 533 else 534 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 535 if (acpi_video_sysctl_tree != NULL) 536 vo->vo_sysctl_tree = 537 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 538 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 539 OID_AUTO, name, CTLFLAG_RD, 0, desc); 540 if (vo->vo_sysctl_tree != NULL) { 541 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 542 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 543 OID_AUTO, "active", 544 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 545 acpi_video_vo_active_sysctl, "I", 546 "current activity of this device"); 547 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 548 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 549 OID_AUTO, "brightness", 550 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 551 acpi_video_vo_bright_sysctl, "I", 552 "current brightness level"); 553 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 554 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 555 OID_AUTO, "fullpower", 556 CTLTYPE_INT|CTLFLAG_RW, vo, 557 POWER_PROFILE_PERFORMANCE, 558 acpi_video_vo_presets_sysctl, "I", 559 "preset level for full power mode"); 560 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 561 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 562 OID_AUTO, "economy", 563 CTLTYPE_INT|CTLFLAG_RW, vo, 564 POWER_PROFILE_ECONOMY, 565 acpi_video_vo_presets_sysctl, "I", 566 "preset level for economy mode"); 567 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 568 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 569 OID_AUTO, "levels", 570 CTLTYPE_INT|CTLFLAG_RD, vo, 0, 571 acpi_video_vo_levels_sysctl, "I", 572 "supported brightness levels"); 573 } else 574 kprintf("%s: sysctl node creation failed\n", type); 575 } else 576 kprintf("%s: softc allocation failed\n", type); 577 578 if (bootverbose) { 579 kprintf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 580 kprintf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 581 kprintf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 582 if (adr & DOD_BIOS) 583 kprintf(", detectable by BIOS"); 584 if (adr & DOD_NONVGA) 585 kprintf(" (Non-VGA output device whose power " 586 "is related to the VGA device)"); 587 kprintf(", head #%d\n", 588 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 589 } 590 return (vo); 591 } 592 593 static void 594 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 595 { 596 ACPI_SERIAL_BEGIN(video_output); 597 if (vo->vo_levels != NULL) 598 AcpiOsFree(vo->vo_levels); 599 vo->handle = handle; 600 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 601 if (vo->vo_numlevels >= 2) { 602 if (vo->vo_fullpower == -1 603 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 604 /* XXX - can't deal with rebinding... */ 605 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 606 if (vo->vo_economy == -1 607 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 608 /* XXX - see above. */ 609 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 610 } 611 if (vo->vo_levels != NULL) 612 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 613 acpi_video_vo_notify_handler, vo); 614 ACPI_SERIAL_END(video_output); 615 } 616 617 static void 618 acpi_video_vo_destroy(struct acpi_video_output *vo) 619 { 620 struct acpi_video_output_queue *voqh; 621 622 ACPI_SERIAL_ASSERT(video); 623 if (vo->vo_sysctl_tree != NULL) { 624 vo->vo_sysctl_tree = NULL; 625 sysctl_ctx_free(&vo->vo_sysctl_ctx); 626 } 627 if (vo->vo_levels != NULL) { 628 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 629 acpi_video_vo_notify_handler); 630 AcpiOsFree(vo->vo_levels); 631 } 632 633 switch (vo->adr & DOD_DEVID_MASK) { 634 case DOD_DEVID_MONITOR: 635 if ((vo->adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 636 voqh = &lcd_units; 637 } else { 638 voqh = &crt_units; 639 } 640 break; 641 case DOD_DEVID_TV: 642 voqh = &tv_units; 643 break; 644 case DOD_DEVID_EXT: 645 voqh = &ext_units; 646 break; 647 case DOD_DEVID_INTDFP: 648 voqh = &lcd_units; 649 break; 650 default: 651 voqh = &other_units; 652 } 653 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 654 kfree(vo, M_ACPIVIDEO); 655 } 656 657 static int 658 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 659 { 660 int i; 661 662 ACPI_SERIAL_ASSERT(video_output); 663 if (vo->vo_levels == NULL) 664 return (ENODEV); 665 for (i = 0; i < vo->vo_numlevels; i++) 666 if (vo->vo_levels[i] == level) 667 return (0); 668 return (EINVAL); 669 } 670 671 static void 672 acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 673 { 674 struct acpi_video_output *vo; 675 int i, j, level, new_level; 676 677 vo = context; 678 ACPI_SERIAL_BEGIN(video_output); 679 if (vo->handle != handle) 680 goto out; 681 682 switch (notify) { 683 case VID_NOTIFY_CYCLE_BRN: 684 if (vo->vo_numlevels <= 3) 685 goto out; 686 /* FALLTHROUGH */ 687 case VID_NOTIFY_INC_BRN: 688 case VID_NOTIFY_DEC_BRN: 689 case VID_NOTIFY_ZERO_BRN: 690 if (vo->vo_levels == NULL) 691 goto out; 692 level = vo_get_brightness(handle); 693 if (level < 0) 694 goto out; 695 break; 696 default: 697 kprintf("unknown notify: %#x from %s\n", notify, 698 acpi_name(handle)); 699 goto out; 700 } 701 702 new_level = level; 703 switch (notify) { 704 case VID_NOTIFY_CYCLE_BRN: 705 for (i = 2; i < vo->vo_numlevels; i++) 706 if (vo->vo_levels[i] == level) { 707 new_level = vo->vo_numlevels > i + 1 ? 708 vo->vo_levels[i + 1] : vo->vo_levels[2]; 709 break; 710 } 711 break; 712 case VID_NOTIFY_INC_BRN: 713 case VID_NOTIFY_DEC_BRN: 714 for (i = 0; i < vo->vo_numlevels; i++) { 715 j = vo->vo_levels[i]; 716 if (notify == VID_NOTIFY_INC_BRN) { 717 if (j > level && 718 (j < new_level || level == new_level)) 719 new_level = j; 720 } else { 721 if (j < level && 722 (j > new_level || level == new_level)) 723 new_level = j; 724 } 725 } 726 break; 727 case VID_NOTIFY_ZERO_BRN: 728 for (i = 0; i < vo->vo_numlevels; i++) 729 if (vo->vo_levels[i] == 0) { 730 new_level = 0; 731 break; 732 } 733 break; 734 } 735 if (new_level != level) { 736 vo_set_brightness(handle, new_level); 737 vo->vo_brightness = new_level; 738 } 739 740 out: 741 ACPI_SERIAL_END(video_output); 742 } 743 744 /* ARGSUSED */ 745 static int 746 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 747 { 748 struct acpi_video_output *vo; 749 int state, err; 750 751 vo = (struct acpi_video_output *)arg1; 752 if (vo->handle == NULL) 753 return (ENXIO); 754 ACPI_SERIAL_BEGIN(video_output); 755 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 756 err = sysctl_handle_int(oidp, &state, 0, req); 757 if (err != 0 || req->newptr == NULL) 758 goto out; 759 vo_set_device_state(vo->handle, 760 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 761 out: 762 ACPI_SERIAL_END(video_output); 763 return (err); 764 } 765 766 /* ARGSUSED */ 767 static int 768 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 769 { 770 struct acpi_video_output *vo; 771 int level, preset, err; 772 773 vo = (struct acpi_video_output *)arg1; 774 ACPI_SERIAL_BEGIN(video_output); 775 if (vo->handle == NULL) { 776 err = ENXIO; 777 goto out; 778 } 779 if (vo->vo_levels == NULL) { 780 err = ENODEV; 781 goto out; 782 } 783 784 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 785 vo->vo_economy : vo->vo_fullpower; 786 level = vo->vo_brightness; 787 if (level == -1) 788 level = preset; 789 790 err = sysctl_handle_int(oidp, &level, 0, req); 791 if (err != 0 || req->newptr == NULL) 792 goto out; 793 if (level < -1 || level > 100) { 794 err = EINVAL; 795 goto out; 796 } 797 798 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 799 goto out; 800 vo->vo_brightness = level; 801 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 802 803 out: 804 ACPI_SERIAL_END(video_output); 805 return (err); 806 } 807 808 static int 809 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 810 { 811 struct acpi_video_output *vo; 812 int i, level, *preset, err; 813 814 vo = (struct acpi_video_output *)arg1; 815 ACPI_SERIAL_BEGIN(video_output); 816 if (vo->handle == NULL) { 817 err = ENXIO; 818 goto out; 819 } 820 if (vo->vo_levels == NULL) { 821 err = ENODEV; 822 goto out; 823 } 824 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 825 &vo->vo_economy : &vo->vo_fullpower; 826 level = *preset; 827 err = sysctl_handle_int(oidp, &level, 0, req); 828 if (err != 0 || req->newptr == NULL) 829 goto out; 830 if (level < -1 || level > 100) { 831 err = EINVAL; 832 goto out; 833 } 834 if (level == -1) { 835 i = (arg2 == POWER_PROFILE_ECONOMY) ? 836 BCL_ECONOMY : BCL_FULLPOWER; 837 level = vo->vo_levels[i]; 838 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 839 goto out; 840 841 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 842 vo_set_brightness(vo->handle, level); 843 *preset = level; 844 845 out: 846 ACPI_SERIAL_END(video_output); 847 return (err); 848 } 849 850 /* ARGSUSED */ 851 static int 852 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 853 { 854 struct acpi_video_output *vo; 855 int err; 856 857 vo = (struct acpi_video_output *)arg1; 858 ACPI_SERIAL_BEGIN(video_output); 859 if (vo->vo_levels == NULL) { 860 err = ENODEV; 861 goto out; 862 } 863 if (req->newptr != NULL) { 864 err = EPERM; 865 goto out; 866 } 867 err = sysctl_handle_opaque(oidp, vo->vo_levels, 868 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 869 870 out: 871 ACPI_SERIAL_END(video_output); 872 return (err); 873 } 874 875 static void 876 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 877 { 878 ACPI_STATUS status; 879 880 status = acpi_SetInteger(handle, "_DOS", policy); 881 if (ACPI_FAILURE(status)) 882 kprintf("can't evaluate %s._DOS - %s\n", 883 acpi_name(handle), AcpiFormatException(status)); 884 } 885 886 struct enum_callback_arg { 887 void (*callback)(ACPI_HANDLE, UINT32, void *); 888 void *context; 889 ACPI_OBJECT *dod_pkg; 890 int count; 891 }; 892 893 static ACPI_STATUS 894 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 895 void *context, void **retp __unused) 896 { 897 ACPI_STATUS status; 898 UINT32 adr, val; 899 struct enum_callback_arg *argset; 900 size_t i; 901 902 ACPI_SERIAL_ASSERT(video); 903 argset = context; 904 status = acpi_GetInteger(handle, "_ADR", &adr); 905 if (ACPI_FAILURE(status)) 906 return (AE_OK); 907 908 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 909 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 910 (val & DOD_DEVID_MASK_FULL) == 911 (adr & DOD_DEVID_MASK_FULL)) { 912 argset->callback(handle, val, argset->context); 913 argset->count++; 914 } 915 } 916 917 return (AE_OK); 918 } 919 920 static int 921 vid_enum_outputs(ACPI_HANDLE handle, 922 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 923 { 924 ACPI_STATUS status; 925 ACPI_BUFFER dod_buf; 926 ACPI_OBJECT *res; 927 struct enum_callback_arg argset; 928 929 ACPI_SERIAL_ASSERT(video); 930 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 931 dod_buf.Pointer = NULL; 932 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 933 if (ACPI_FAILURE(status)) { 934 if (status != AE_NOT_FOUND) 935 kprintf("can't evaluate %s._DOD - %s\n", 936 acpi_name(handle), AcpiFormatException(status)); 937 argset.count = -1; 938 goto out; 939 } 940 res = (ACPI_OBJECT *)dod_buf.Pointer; 941 if (!ACPI_PKG_VALID(res, 1)) { 942 kprintf("evaluation of %s._DOD makes no sense\n", 943 acpi_name(handle)); 944 argset.count = -1; 945 goto out; 946 } 947 if (callback == NULL) { 948 argset.count = res->Package.Count; 949 goto out; 950 } 951 argset.callback = callback; 952 argset.context = context; 953 argset.dod_pkg = res; 954 argset.count = 0; 955 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 956 vid_enum_outputs_subr, NULL, &argset, NULL); 957 if (ACPI_FAILURE(status)) 958 kprintf("failed walking down %s - %s\n", 959 acpi_name(handle), AcpiFormatException(status)); 960 out: 961 if (dod_buf.Pointer != NULL) 962 AcpiOsFree(dod_buf.Pointer); 963 return (argset.count); 964 } 965 966 static int 967 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 968 { 969 ACPI_STATUS status; 970 ACPI_BUFFER bcl_buf; 971 ACPI_OBJECT *res; 972 int num, i, n, *levels; 973 974 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 975 bcl_buf.Pointer = NULL; 976 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 977 if (ACPI_FAILURE(status)) { 978 if (status != AE_NOT_FOUND) 979 kprintf("can't evaluate %s._BCL - %s\n", 980 acpi_name(handle), AcpiFormatException(status)); 981 goto out; 982 } 983 res = (ACPI_OBJECT *)bcl_buf.Pointer; 984 if (!ACPI_PKG_VALID(res, 2)) { 985 kprintf("evaluation of %s._BCL makes no sense\n", 986 acpi_name(handle)); 987 goto out; 988 } 989 num = res->Package.Count; 990 if (num < 2 || levelp == NULL) 991 goto out; 992 levels = AcpiOsAllocate(num * sizeof(*levels)); 993 if (levels == NULL) 994 goto out; 995 for (i = 0, n = 0; i < num; i++) 996 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 997 n++; 998 if (n < 2) { 999 AcpiOsFree(levels); 1000 goto out; 1001 } 1002 *levelp = levels; 1003 return (n); 1004 1005 out: 1006 if (bcl_buf.Pointer != NULL) 1007 AcpiOsFree(bcl_buf.Pointer); 1008 return (0); 1009 } 1010 1011 static int 1012 vo_get_brightness(ACPI_HANDLE handle) 1013 { 1014 UINT32 level; 1015 ACPI_STATUS status; 1016 1017 ACPI_SERIAL_ASSERT(video_output); 1018 status = acpi_GetInteger(handle, "_BQC", &level); 1019 if (ACPI_FAILURE(status)) { 1020 kprintf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 1021 AcpiFormatException(status)); 1022 return (-1); 1023 } 1024 if (level > 100) 1025 return (-1); 1026 1027 return (level); 1028 } 1029 1030 static void 1031 vo_set_brightness(ACPI_HANDLE handle, int level) 1032 { 1033 ACPI_STATUS status; 1034 1035 ACPI_SERIAL_ASSERT(video_output); 1036 status = acpi_SetInteger(handle, "_BCM", level); 1037 if (ACPI_FAILURE(status)) 1038 kprintf("can't evaluate %s._BCM - %s\n", 1039 acpi_name(handle), AcpiFormatException(status)); 1040 } 1041 1042 static UINT32 1043 vo_get_device_status(ACPI_HANDLE handle) 1044 { 1045 UINT32 dcs; 1046 ACPI_STATUS status; 1047 1048 ACPI_SERIAL_ASSERT(video_output); 1049 dcs = 0; 1050 status = acpi_GetInteger(handle, "_DCS", &dcs); 1051 if (ACPI_FAILURE(status)) 1052 kprintf("can't evaluate %s._DCS - %s\n", 1053 acpi_name(handle), AcpiFormatException(status)); 1054 1055 return (dcs); 1056 } 1057 1058 static UINT32 1059 vo_get_graphics_state(ACPI_HANDLE handle) 1060 { 1061 UINT32 dgs; 1062 ACPI_STATUS status; 1063 1064 dgs = 0; 1065 status = acpi_GetInteger(handle, "_DGS", &dgs); 1066 if (ACPI_FAILURE(status)) 1067 kprintf("can't evaluate %s._DGS - %s\n", 1068 acpi_name(handle), AcpiFormatException(status)); 1069 1070 return (dgs); 1071 } 1072 1073 static void 1074 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1075 { 1076 ACPI_STATUS status; 1077 1078 ACPI_SERIAL_ASSERT(video_output); 1079 status = acpi_SetInteger(handle, "_DSS", state); 1080 if (ACPI_FAILURE(status)) 1081 kprintf("can't evaluate %s._DSS - %s\n", 1082 acpi_name(handle), AcpiFormatException(status)); 1083 } 1084