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sys/dev/acpica/acpi_video.c
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1 /*- 2 * Copyright (c) 2002-2003 Taku YAMAMOTO <taku@cent.saitama-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 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/acpi.h> 42 #include <dev/acpica/acpivar.h> 43 44 /* ACPI video extension driver. */ 45 struct acpi_video_output { 46 ACPI_HANDLE handle; 47 UINT32 adr; 48 STAILQ_ENTRY(acpi_video_output) vo_next; 49 struct { 50 int num; 51 STAILQ_ENTRY(acpi_video_output) next; 52 } vo_unit; 53 int vo_brightness; 54 int vo_fullpower; 55 int vo_economy; 56 int vo_numlevels; 57 int *vo_levels; 58 struct sysctl_ctx_list vo_sysctl_ctx; 59 struct sysctl_oid *vo_sysctl_tree; 60 }; 61 62 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 63 64 struct acpi_video_softc { 65 device_t device; 66 ACPI_HANDLE handle; 67 struct acpi_video_output_queue vid_outputs; 68 eventhandler_tag vid_pwr_evh; 69 }; 70 71 /* interfaces */ 72 static int acpi_video_modevent(struct module*, int, void *); 73 static void acpi_video_identify(driver_t *driver, device_t parent); 74 static int acpi_video_probe(device_t); 75 static int acpi_video_attach(device_t); 76 static int acpi_video_detach(device_t); 77 static int acpi_video_shutdown(device_t); 78 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 79 static void acpi_video_power_profile(void *); 80 static void acpi_video_bind_outputs(struct acpi_video_softc *); 81 static struct acpi_video_output *acpi_video_vo_init(UINT32); 82 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 83 static void acpi_video_vo_destroy(struct acpi_video_output *); 84 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 85 static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 86 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 87 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 88 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 89 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 90 91 /* operations */ 92 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 93 static int vid_enum_outputs(ACPI_HANDLE, 94 void(*)(ACPI_HANDLE, UINT32, void *), void *); 95 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 96 static int vo_get_brightness(ACPI_HANDLE); 97 static void vo_set_brightness(ACPI_HANDLE, int); 98 static UINT32 vo_get_device_status(ACPI_HANDLE); 99 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 100 static void vo_set_device_state(ACPI_HANDLE, UINT32); 101 102 /* events */ 103 #define VID_NOTIFY_SWITCHED 0x80 104 #define VID_NOTIFY_REPROBE 0x81 105 #define VID_NOTIFY_CYCLE_BRN 0x85 106 #define VID_NOTIFY_INC_BRN 0x86 107 #define VID_NOTIFY_DEC_BRN 0x87 108 #define VID_NOTIFY_ZERO_BRN 0x88 109 110 /* _DOS (Enable/Disable Output Switching) argument bits */ 111 #define DOS_SWITCH_MASK 3 112 #define DOS_SWITCH_BY_OSPM 0 113 #define DOS_SWITCH_BY_BIOS 1 114 #define DOS_SWITCH_LOCKED 2 115 #define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 116 117 /* _DOD and subdev's _ADR */ 118 #define DOD_DEVID_MASK 0x0f00 119 #define DOD_DEVID_MASK_FULL 0xffff 120 #define DOD_DEVID_MASK_DISPIDX 0x000f 121 #define DOD_DEVID_MASK_DISPPORT 0x00f0 122 #define DOD_DEVID_MONITOR 0x0100 123 #define DOD_DEVID_LCD 0x0110 124 #define DOD_DEVID_TV 0x0200 125 #define DOD_DEVID_EXT 0x0300 126 #define DOD_DEVID_INTDFP 0x0400 127 #define DOD_BIOS (1 << 16) 128 #define DOD_NONVGA (1 << 17) 129 #define DOD_HEAD_ID_SHIFT 18 130 #define DOD_HEAD_ID_BITS 3 131 #define DOD_HEAD_ID_MASK \ 132 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 133 #define DOD_DEVID_SCHEME_STD (1 << 31) 134 135 /* _BCL related constants */ 136 #define BCL_FULLPOWER 0 137 #define BCL_ECONOMY 1 138 139 /* _DCS (Device Currrent Status) value bits and masks. */ 140 #define DCS_EXISTS (1 << 0) 141 #define DCS_ACTIVE (1 << 1) 142 #define DCS_READY (1 << 2) 143 #define DCS_FUNCTIONAL (1 << 3) 144 #define DCS_ATTACHED (1 << 4) 145 146 /* _DSS (Device Set Status) argument bits and masks. */ 147 #define DSS_INACTIVE 0 148 #define DSS_ACTIVE (1 << 0) 149 #define DSS_SETNEXT (1 << 30) 150 #define DSS_COMMIT (1 << 31) 151 152 static device_method_t acpi_video_methods[] = { 153 DEVMETHOD(device_identify, acpi_video_identify), 154 DEVMETHOD(device_probe, acpi_video_probe), 155 DEVMETHOD(device_attach, acpi_video_attach), 156 DEVMETHOD(device_detach, acpi_video_detach), 157 DEVMETHOD(device_shutdown, acpi_video_shutdown), 158 { 0, 0 } 159 }; 160 161 static driver_t acpi_video_driver = { 162 "acpi_video", 163 acpi_video_methods, 164 sizeof(struct acpi_video_softc), 165 }; 166 167 static devclass_t acpi_video_devclass; 168 169 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 170 acpi_video_modevent, NULL); 171 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 172 173 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 174 static struct sysctl_oid *acpi_video_sysctl_tree; 175 static struct acpi_video_output_queue crt_units, tv_units, 176 ext_units, lcd_units, other_units; 177 178 /* 179 * The 'video' lock protects the hierarchy of video output devices 180 * (the video "bus"). The 'video_output' lock protects per-output 181 * data is equivalent to a softc lock for each video output. 182 */ 183 ACPI_SERIAL_DECL(video, "ACPI video"); 184 ACPI_SERIAL_DECL(video_output, "ACPI video output"); 185 MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 186 187 static int 188 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 189 { 190 int err; 191 192 err = 0; 193 switch (evt) { 194 case MOD_LOAD: 195 sysctl_ctx_init(&acpi_video_sysctl_ctx); 196 STAILQ_INIT(&crt_units); 197 STAILQ_INIT(&tv_units); 198 STAILQ_INIT(&ext_units); 199 STAILQ_INIT(&lcd_units); 200 STAILQ_INIT(&other_units); 201 break; 202 case MOD_UNLOAD: 203 sysctl_ctx_free(&acpi_video_sysctl_ctx); 204 acpi_video_sysctl_tree = NULL; 205 break; 206 default: 207 err = EINVAL; 208 } 209 210 return (err); 211 } 212 213 static void 214 acpi_video_identify(driver_t *driver, device_t parent) 215 { 216 217 if (device_find_child(parent, "acpi_video", -1) == NULL) 218 device_add_child(parent, "acpi_video", -1); 219 } 220 221 static int 222 acpi_video_probe(device_t dev) 223 { 224 ACPI_HANDLE devh, h; 225 ACPI_OBJECT_TYPE t_dos; 226 227 devh = acpi_get_handle(dev); 228 if (acpi_disabled("video") || 229 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 230 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 231 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 232 t_dos != ACPI_TYPE_METHOD) 233 return (ENXIO); 234 235 device_set_desc(dev, "ACPI video extension"); 236 return (0); 237 } 238 239 static int 240 acpi_video_attach(device_t dev) 241 { 242 struct acpi_softc *acpi_sc; 243 struct acpi_video_softc *sc; 244 245 sc = device_get_softc(dev); 246 247 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 248 if (acpi_sc == NULL) 249 return (ENXIO); 250 ACPI_SERIAL_BEGIN(video); 251 if (acpi_video_sysctl_tree == NULL) { 252 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 253 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 254 OID_AUTO, "video", CTLFLAG_RD, 0, 255 "video extension control"); 256 } 257 ACPI_SERIAL_END(video); 258 259 sc->device = dev; 260 sc->handle = acpi_get_handle(dev); 261 STAILQ_INIT(&sc->vid_outputs); 262 263 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 264 acpi_video_notify_handler, sc); 265 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 266 acpi_video_power_profile, sc, 0); 267 268 ACPI_SERIAL_BEGIN(video); 269 acpi_video_bind_outputs(sc); 270 ACPI_SERIAL_END(video); 271 272 /* 273 * Notify the BIOS that we want to switch both active outputs and 274 * brightness levels. 275 */ 276 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 277 DOS_BRIGHTNESS_BY_OSPM); 278 279 acpi_video_power_profile(sc); 280 281 return (0); 282 } 283 284 static int 285 acpi_video_detach(device_t dev) 286 { 287 struct acpi_video_softc *sc; 288 struct acpi_video_output *vo, *vn; 289 290 sc = device_get_softc(dev); 291 292 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 293 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 294 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 295 acpi_video_notify_handler); 296 297 ACPI_SERIAL_BEGIN(video); 298 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 299 acpi_video_vo_destroy(vo); 300 } 301 ACPI_SERIAL_END(video); 302 303 return (0); 304 } 305 306 static int 307 acpi_video_shutdown(device_t dev) 308 { 309 struct acpi_video_softc *sc; 310 311 sc = device_get_softc(dev); 312 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 313 314 return (0); 315 } 316 317 static void 318 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 319 { 320 struct acpi_video_softc *sc; 321 struct acpi_video_output *vo, *vo_tmp; 322 ACPI_HANDLE lasthand; 323 UINT32 dcs, dss, dss_p; 324 325 sc = (struct acpi_video_softc *)context; 326 327 switch (notify) { 328 case VID_NOTIFY_SWITCHED: 329 dss_p = 0; 330 lasthand = NULL; 331 ACPI_SERIAL_BEGIN(video); 332 ACPI_SERIAL_BEGIN(video_output); 333 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 334 dss = vo_get_graphics_state(vo->handle); 335 dcs = vo_get_device_status(vo->handle); 336 if (!(dcs & DCS_READY)) 337 dss = DSS_INACTIVE; 338 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 339 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 340 if (lasthand != NULL) 341 vo_set_device_state(lasthand, dss_p); 342 dss_p = dss; 343 lasthand = vo->handle; 344 } 345 } 346 if (lasthand != NULL) 347 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 348 ACPI_SERIAL_END(video_output); 349 ACPI_SERIAL_END(video); 350 break; 351 case VID_NOTIFY_REPROBE: 352 ACPI_SERIAL_BEGIN(video); 353 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 354 vo->handle = NULL; 355 acpi_video_bind_outputs(sc); 356 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 357 if (vo->handle == NULL) { 358 STAILQ_REMOVE(&sc->vid_outputs, vo, 359 acpi_video_output, vo_next); 360 acpi_video_vo_destroy(vo); 361 } 362 } 363 ACPI_SERIAL_END(video); 364 break; 365 default: 366 device_printf(sc->device, "unknown notify event 0x%x\n", 367 notify); 368 } 369 } 370 371 static void 372 acpi_video_power_profile(void *context) 373 { 374 int state; 375 struct acpi_video_softc *sc; 376 struct acpi_video_output *vo; 377 378 sc = context; 379 state = power_profile_get_state(); 380 if (state != POWER_PROFILE_PERFORMANCE && 381 state != POWER_PROFILE_ECONOMY) 382 return; 383 384 ACPI_SERIAL_BEGIN(video); 385 ACPI_SERIAL_BEGIN(video_output); 386 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 387 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 388 vo_set_brightness(vo->handle, 389 state == POWER_PROFILE_ECONOMY ? 390 vo->vo_economy : vo->vo_fullpower); 391 } 392 ACPI_SERIAL_END(video_output); 393 ACPI_SERIAL_END(video); 394 } 395 396 static void 397 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 398 { 399 struct acpi_video_softc *sc; 400 struct acpi_video_output *vo; 401 402 ACPI_SERIAL_ASSERT(video); 403 sc = context; 404 405 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 406 if (vo->adr == adr) { 407 acpi_video_vo_bind(vo, handle); 408 return; 409 } 410 } 411 vo = acpi_video_vo_init(adr); 412 if (vo != NULL) { 413 acpi_video_vo_bind(vo, handle); 414 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 415 } 416 } 417 418 static void 419 acpi_video_bind_outputs(struct acpi_video_softc *sc) 420 { 421 422 ACPI_SERIAL_ASSERT(video); 423 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 424 } 425 426 static struct acpi_video_output * 427 acpi_video_vo_init(UINT32 adr) 428 { 429 struct acpi_video_output *vn, *vo, *vp; 430 int n, x; 431 int display_index; 432 int display_port; 433 char name[8], env[32]; 434 const char *type, *desc; 435 struct acpi_video_output_queue *voqh; 436 437 ACPI_SERIAL_ASSERT(video); 438 display_index = adr & DOD_DEVID_MASK_DISPIDX; 439 display_port = (adr & DOD_DEVID_MASK_DISPPORT) >> 4; 440 441 switch (adr & DOD_DEVID_MASK) { 442 case DOD_DEVID_MONITOR: 443 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 444 /* DOD_DEVID_LCD is a common, backward compatible ID */ 445 desc = "Internal/Integrated Digital Flat Panel"; 446 type = "lcd"; 447 voqh = &lcd_units; 448 } else { 449 desc = "VGA CRT or VESA Compatible Analog Monitor"; 450 type = "crt"; 451 voqh = &crt_units; 452 } 453 break; 454 case DOD_DEVID_TV: 455 desc = "TV/HDTV or Analog-Video Monitor"; 456 type = "tv"; 457 voqh = &tv_units; 458 break; 459 case DOD_DEVID_EXT: 460 desc = "External Digital Monitor"; 461 type = "ext"; 462 voqh = &ext_units; 463 break; 464 case DOD_DEVID_INTDFP: 465 desc = "Internal/Integrated Digital Flat Panel"; 466 type = "lcd"; 467 voqh = &lcd_units; 468 break; 469 default: 470 desc = "unknown output"; 471 type = "out"; 472 voqh = &other_units; 473 } 474 475 n = 0; 476 vn = vp = NULL; 477 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 478 if (vn->vo_unit.num != n) 479 break; 480 vp = vn; 481 n++; 482 } 483 484 snprintf(name, sizeof(name), "%s%d", type, n); 485 486 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 487 if (vo != NULL) { 488 vo->handle = NULL; 489 vo->adr = adr; 490 vo->vo_unit.num = n; 491 vo->vo_brightness = -1; 492 vo->vo_fullpower = -1; /* TODO: override with tunables */ 493 vo->vo_economy = -1; 494 vo->vo_numlevels = 0; 495 vo->vo_levels = NULL; 496 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 497 if (getenv_int(env, &x)) 498 vo->vo_fullpower = x; 499 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 500 if (getenv_int(env, &x)) 501 vo->vo_economy = x; 502 503 sysctl_ctx_init(&vo->vo_sysctl_ctx); 504 if (vp != NULL) 505 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 506 else 507 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 508 if (acpi_video_sysctl_tree != NULL) 509 vo->vo_sysctl_tree = 510 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 511 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 512 OID_AUTO, name, CTLFLAG_RD, 0, desc); 513 if (vo->vo_sysctl_tree != NULL) { 514 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 515 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 516 OID_AUTO, "active", 517 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 518 acpi_video_vo_active_sysctl, "I", 519 "current activity of this device"); 520 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 521 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 522 OID_AUTO, "brightness", 523 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 524 acpi_video_vo_bright_sysctl, "I", 525 "current brightness level"); 526 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 527 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 528 OID_AUTO, "fullpower", 529 CTLTYPE_INT|CTLFLAG_RW, vo, 530 POWER_PROFILE_PERFORMANCE, 531 acpi_video_vo_presets_sysctl, "I", 532 "preset level for full power mode"); 533 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 534 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 535 OID_AUTO, "economy", 536 CTLTYPE_INT|CTLFLAG_RW, vo, 537 POWER_PROFILE_ECONOMY, 538 acpi_video_vo_presets_sysctl, "I", 539 "preset level for economy mode"); 540 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 541 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 542 OID_AUTO, "levels", 543 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 544 acpi_video_vo_levels_sysctl, "I", 545 "supported brightness levels"); 546 } else 547 printf("%s: sysctl node creation failed\n", type); 548 } else 549 printf("%s: softc allocation failed\n", type); 550 551 if (bootverbose) { 552 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 553 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 554 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 555 if (adr & DOD_BIOS) 556 printf(", detectable by BIOS"); 557 if (adr & DOD_NONVGA) 558 printf(" (Non-VGA output device whose power " 559 "is related to the VGA device)"); 560 printf(", head #%d\n", 561 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 562 } 563 return (vo); 564 } 565 566 static void 567 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 568 { 569 570 ACPI_SERIAL_BEGIN(video_output); 571 if (vo->vo_levels != NULL) 572 AcpiOsFree(vo->vo_levels); 573 vo->handle = handle; 574 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 575 if (vo->vo_numlevels >= 2) { 576 if (vo->vo_fullpower == -1 577 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 578 /* XXX - can't deal with rebinding... */ 579 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 580 if (vo->vo_economy == -1 581 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 582 /* XXX - see above. */ 583 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 584 } 585 if (vo->vo_levels != NULL) 586 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 587 acpi_video_vo_notify_handler, vo); 588 ACPI_SERIAL_END(video_output); 589 } 590 591 static void 592 acpi_video_vo_destroy(struct acpi_video_output *vo) 593 { 594 struct acpi_video_output_queue *voqh; 595 596 ACPI_SERIAL_ASSERT(video); 597 if (vo->vo_sysctl_tree != NULL) { 598 vo->vo_sysctl_tree = NULL; 599 sysctl_ctx_free(&vo->vo_sysctl_ctx); 600 } 601 if (vo->vo_levels != NULL) { 602 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 603 acpi_video_vo_notify_handler); 604 AcpiOsFree(vo->vo_levels); 605 } 606 607 switch (vo->adr & DOD_DEVID_MASK) { 608 case DOD_DEVID_MONITOR: 609 voqh = &crt_units; 610 break; 611 case DOD_DEVID_TV: 612 voqh = &tv_units; 613 break; 614 case DOD_DEVID_EXT: 615 voqh = &ext_units; 616 break; 617 case DOD_DEVID_INTDFP: 618 voqh = &lcd_units; 619 break; 620 default: 621 voqh = &other_units; 622 } 623 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 624 free(vo, M_ACPIVIDEO); 625 } 626 627 static int 628 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 629 { 630 int i; 631 632 ACPI_SERIAL_ASSERT(video_output); 633 if (vo->vo_levels == NULL) 634 return (ENODEV); 635 for (i = 0; i < vo->vo_numlevels; i++) 636 if (vo->vo_levels[i] == level) 637 return (0); 638 return (EINVAL); 639 } 640 641 static void 642 acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 643 { 644 struct acpi_video_output *vo; 645 int i, j, level, new_level; 646 647 vo = context; 648 ACPI_SERIAL_BEGIN(video_output); 649 if (vo->handle != handle) 650 goto out; 651 652 switch (notify) { 653 case VID_NOTIFY_CYCLE_BRN: 654 if (vo->vo_numlevels <= 3) 655 goto out; 656 /* FALLTHROUGH */ 657 case VID_NOTIFY_INC_BRN: 658 case VID_NOTIFY_DEC_BRN: 659 case VID_NOTIFY_ZERO_BRN: 660 if (vo->vo_levels == NULL) 661 goto out; 662 level = vo_get_brightness(handle); 663 if (level < 0) 664 goto out; 665 break; 666 default: 667 printf("unknown notify event 0x%x from %s\n", 668 notify, acpi_name(handle)); 669 goto out; 670 } 671 672 new_level = level; 673 switch (notify) { 674 case VID_NOTIFY_CYCLE_BRN: 675 for (i = 2; i < vo->vo_numlevels; i++) 676 if (vo->vo_levels[i] == level) { 677 new_level = vo->vo_numlevels > i + 1 ? 678 vo->vo_levels[i + 1] : vo->vo_levels[2]; 679 break; 680 } 681 break; 682 case VID_NOTIFY_INC_BRN: 683 case VID_NOTIFY_DEC_BRN: 684 for (i = 0; i < vo->vo_numlevels; i++) { 685 j = vo->vo_levels[i]; 686 if (notify == VID_NOTIFY_INC_BRN) { 687 if (j > level && 688 (j < new_level || level == new_level)) 689 new_level = j; 690 } else { 691 if (j < level && 692 (j > new_level || level == new_level)) 693 new_level = j; 694 } 695 } 696 break; 697 case VID_NOTIFY_ZERO_BRN: 698 for (i = 0; i < vo->vo_numlevels; i++) 699 if (vo->vo_levels[i] == 0) { 700 new_level = 0; 701 break; 702 } 703 break; 704 } 705 if (new_level != level) { 706 vo_set_brightness(handle, new_level); 707 vo->vo_brightness = new_level; 708 } 709 710 out: 711 ACPI_SERIAL_END(video_output); 712 } 713 714 /* ARGSUSED */ 715 static int 716 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 717 { 718 struct acpi_video_output *vo; 719 int state, err; 720 721 vo = (struct acpi_video_output *)arg1; 722 if (vo->handle == NULL) 723 return (ENXIO); 724 ACPI_SERIAL_BEGIN(video_output); 725 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 726 err = sysctl_handle_int(oidp, &state, 0, req); 727 if (err != 0 || req->newptr == NULL) 728 goto out; 729 vo_set_device_state(vo->handle, 730 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 731 out: 732 ACPI_SERIAL_END(video_output); 733 return (err); 734 } 735 736 /* ARGSUSED */ 737 static int 738 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 739 { 740 struct acpi_video_output *vo; 741 int level, preset, err; 742 743 vo = (struct acpi_video_output *)arg1; 744 ACPI_SERIAL_BEGIN(video_output); 745 if (vo->handle == NULL) { 746 err = ENXIO; 747 goto out; 748 } 749 if (vo->vo_levels == NULL) { 750 err = ENODEV; 751 goto out; 752 } 753 754 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 755 vo->vo_economy : vo->vo_fullpower; 756 level = vo->vo_brightness; 757 if (level == -1) 758 level = preset; 759 760 err = sysctl_handle_int(oidp, &level, 0, req); 761 if (err != 0 || req->newptr == NULL) 762 goto out; 763 if (level < -1 || level > 100) { 764 err = EINVAL; 765 goto out; 766 } 767 768 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 769 goto out; 770 vo->vo_brightness = level; 771 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 772 773 out: 774 ACPI_SERIAL_END(video_output); 775 return (err); 776 } 777 778 static int 779 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 780 { 781 struct acpi_video_output *vo; 782 int i, level, *preset, err; 783 784 err = 0; 785 vo = (struct acpi_video_output *)arg1; 786 ACPI_SERIAL_BEGIN(video_output); 787 if (vo->handle == NULL) { 788 err = ENXIO; 789 goto out; 790 } 791 if (vo->vo_levels == NULL) { 792 err = ENODEV; 793 goto out; 794 } 795 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 796 &vo->vo_economy : &vo->vo_fullpower; 797 level = *preset; 798 err = sysctl_handle_int(oidp, &level, 0, req); 799 if (err != 0 || req->newptr == NULL) 800 goto out; 801 if (level < -1 || level > 100) { 802 err = EINVAL; 803 goto out; 804 } 805 if (level == -1) { 806 i = (arg2 == POWER_PROFILE_ECONOMY) ? 807 BCL_ECONOMY : BCL_FULLPOWER; 808 level = vo->vo_levels[i]; 809 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 810 goto out; 811 812 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 813 vo_set_brightness(vo->handle, level); 814 *preset = level; 815 816 out: 817 ACPI_SERIAL_END(video_output); 818 return (err); 819 } 820 821 /* ARGSUSED */ 822 static int 823 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 824 { 825 struct acpi_video_output *vo; 826 int err; 827 828 vo = (struct acpi_video_output *)arg1; 829 ACPI_SERIAL_BEGIN(video_output); 830 if (vo->vo_levels == NULL) { 831 err = ENODEV; 832 goto out; 833 } 834 if (req->newptr != NULL) { 835 err = EPERM; 836 goto out; 837 } 838 err = sysctl_handle_opaque(oidp, vo->vo_levels, 839 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 840 841 out: 842 ACPI_SERIAL_END(video_output); 843 return (err); 844 } 845 846 static void 847 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 848 { 849 ACPI_STATUS status; 850 851 status = acpi_SetInteger(handle, "_DOS", policy); 852 if (ACPI_FAILURE(status)) 853 printf("can't evaluate %s._DOS - %s\n", 854 acpi_name(handle), AcpiFormatException(status)); 855 } 856 857 struct enum_callback_arg { 858 void (*callback)(ACPI_HANDLE, UINT32, void *); 859 void *context; 860 ACPI_OBJECT *dod_pkg; 861 int count; 862 }; 863 864 static ACPI_STATUS 865 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 866 void *context, void **retp __unused) 867 { 868 ACPI_STATUS status; 869 UINT32 adr, val; 870 struct enum_callback_arg *argset; 871 size_t i; 872 873 ACPI_SERIAL_ASSERT(video); 874 argset = context; 875 status = acpi_GetInteger(handle, "_ADR", &adr); 876 if (ACPI_FAILURE(status)) 877 return (AE_OK); 878 879 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 880 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 881 (val & DOD_DEVID_MASK_FULL) == adr) { 882 argset->callback(handle, val, argset->context); 883 argset->count++; 884 } 885 } 886 887 return (AE_OK); 888 } 889 890 static int 891 vid_enum_outputs(ACPI_HANDLE handle, 892 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 893 { 894 ACPI_STATUS status; 895 ACPI_BUFFER dod_buf; 896 ACPI_OBJECT *res; 897 struct enum_callback_arg argset; 898 899 ACPI_SERIAL_ASSERT(video); 900 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 901 dod_buf.Pointer = NULL; 902 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 903 if (ACPI_FAILURE(status)) { 904 if (status != AE_NOT_FOUND) 905 printf("can't evaluate %s._DOD - %s\n", 906 acpi_name(handle), AcpiFormatException(status)); 907 argset.count = -1; 908 goto out; 909 } 910 res = (ACPI_OBJECT *)dod_buf.Pointer; 911 if (!ACPI_PKG_VALID(res, 1)) { 912 printf("evaluation of %s._DOD makes no sense\n", 913 acpi_name(handle)); 914 argset.count = -1; 915 goto out; 916 } 917 if (callback == NULL) { 918 argset.count = res->Package.Count; 919 goto out; 920 } 921 argset.callback = callback; 922 argset.context = context; 923 argset.dod_pkg = res; 924 argset.count = 0; 925 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 926 vid_enum_outputs_subr, &argset, NULL); 927 if (ACPI_FAILURE(status)) 928 printf("failed walking down %s - %s\n", 929 acpi_name(handle), AcpiFormatException(status)); 930 out: 931 if (dod_buf.Pointer != NULL) 932 AcpiOsFree(dod_buf.Pointer); 933 return (argset.count); 934 } 935 936 static int 937 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 938 { 939 ACPI_STATUS status; 940 ACPI_BUFFER bcl_buf; 941 ACPI_OBJECT *res; 942 int num, i, n, *levels; 943 944 num = 0; 945 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 946 bcl_buf.Pointer = NULL; 947 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 948 if (ACPI_FAILURE(status)) { 949 if (status != AE_NOT_FOUND) 950 printf("can't evaluate %s._BCL - %s\n", 951 acpi_name(handle), AcpiFormatException(status)); 952 num = -1; 953 goto out; 954 } 955 res = (ACPI_OBJECT *)bcl_buf.Pointer; 956 if (!ACPI_PKG_VALID(res, 2)) { 957 printf("evaluation of %s._BCL makes no sense\n", 958 acpi_name(handle)); 959 num = -1; 960 goto out; 961 } 962 num = res->Package.Count; 963 if (levelp == NULL) 964 goto out; 965 levels = AcpiOsAllocate(num * sizeof(*levels)); 966 if (levels == NULL) { 967 num = -1; 968 goto out; 969 } 970 for (i = 0, n = 0; i < num; i++) 971 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 972 n++; 973 if (n < 2) { 974 num = -1; 975 AcpiOsFree(levels); 976 } else { 977 num = n; 978 *levelp = levels; 979 } 980 out: 981 if (bcl_buf.Pointer != NULL) 982 AcpiOsFree(bcl_buf.Pointer); 983 984 return (num); 985 } 986 987 static int 988 vo_get_brightness(ACPI_HANDLE handle) 989 { 990 UINT32 level; 991 ACPI_STATUS status; 992 993 ACPI_SERIAL_ASSERT(video_output); 994 status = acpi_GetInteger(handle, "_BQC", &level); 995 if (ACPI_FAILURE(status)) { 996 printf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 997 AcpiFormatException(status)); 998 return (-1); 999 } 1000 if (level > 100) 1001 return (-1); 1002 1003 return (level); 1004 } 1005 1006 static void 1007 vo_set_brightness(ACPI_HANDLE handle, int level) 1008 { 1009 ACPI_STATUS status; 1010 1011 ACPI_SERIAL_ASSERT(video_output); 1012 status = acpi_SetInteger(handle, "_BCM", level); 1013 if (ACPI_FAILURE(status)) 1014 printf("can't evaluate %s._BCM - %s\n", 1015 acpi_name(handle), AcpiFormatException(status)); 1016 } 1017 1018 static UINT32 1019 vo_get_device_status(ACPI_HANDLE handle) 1020 { 1021 UINT32 dcs; 1022 ACPI_STATUS status; 1023 1024 ACPI_SERIAL_ASSERT(video_output); 1025 dcs = 0; 1026 status = acpi_GetInteger(handle, "_DCS", &dcs); 1027 if (ACPI_FAILURE(status)) 1028 printf("can't evaluate %s._DCS - %s\n", 1029 acpi_name(handle), AcpiFormatException(status)); 1030 1031 return (dcs); 1032 } 1033 1034 static UINT32 1035 vo_get_graphics_state(ACPI_HANDLE handle) 1036 { 1037 UINT32 dgs; 1038 ACPI_STATUS status; 1039 1040 dgs = 0; 1041 status = acpi_GetInteger(handle, "_DGS", &dgs); 1042 if (ACPI_FAILURE(status)) 1043 printf("can't evaluate %s._DGS - %s\n", 1044 acpi_name(handle), AcpiFormatException(status)); 1045 1046 return (dgs); 1047 } 1048 1049 static void 1050 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1051 { 1052 ACPI_STATUS status; 1053 1054 ACPI_SERIAL_ASSERT(video_output); 1055 status = acpi_SetInteger(handle, "_DSS", state); 1056 if (ACPI_FAILURE(status)) 1057 printf("can't evaluate %s._DSS - %s\n", 1058 acpi_name(handle), AcpiFormatException(status)); 1059 }
Cache object: 66c0a6d0bf06cc6665ecadce102c7cf5
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