Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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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 * $FreeBSD: releng/5.3/sys/dev/acpica/acpi_video.c 133625 2004-08-13 06:22:20Z njl $ 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 <dev/acpica/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 int acpi_video_probe(device_t); 72 static int acpi_video_attach(device_t); 73 static int acpi_video_detach(device_t); 74 static int acpi_video_shutdown(device_t); 75 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 76 static void acpi_video_power_profile(void *); 77 static void acpi_video_bind_outputs(struct acpi_video_softc *); 78 static struct acpi_video_output *acpi_video_vo_init(UINT32); 79 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 80 static void acpi_video_vo_destroy(struct acpi_video_output *); 81 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 82 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 83 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 84 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 85 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 86 87 /* operations */ 88 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 89 static int vid_enum_outputs(ACPI_HANDLE, 90 void(*)(ACPI_HANDLE, UINT32, void *), void *); 91 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 92 static void vo_set_brightness(ACPI_HANDLE, int); 93 static UINT32 vo_get_device_status(ACPI_HANDLE); 94 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 95 static void vo_set_device_state(ACPI_HANDLE, UINT32); 96 97 /* events */ 98 #define VID_NOTIFY_SWITCHED 0x80 99 #define VID_NOTIFY_REPROBE 0x81 100 101 /* _DOS (Enable/Disable Output Switching) argument bits */ 102 #define DOS_SWITCH_MASK 3 103 #define DOS_SWITCH_BY_OSPM 0 104 #define DOS_SWITCH_BY_BIOS 1 105 #define DOS_SWITCH_LOCKED 2 106 #define DOS_BRIGHTNESS_BY_BIOS (1 << 2) 107 108 /* _DOD and subdev's _ADR */ 109 #define DOD_DEVID_MASK 0xffff 110 #define DOD_DEVID_MONITOR 0x0100 111 #define DOD_DEVID_PANEL 0x0110 112 #define DOD_DEVID_TV 0x0200 113 #define DOD_BIOS (1 << 16) 114 #define DOD_NONVGA (1 << 17) 115 #define DOD_HEAD_ID_SHIFT 18 116 #define DOD_HEAD_ID_BITS 3 117 #define DOD_HEAD_ID_MASK \ 118 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 119 120 /* _BCL related constants */ 121 #define BCL_FULLPOWER 0 122 #define BCL_ECONOMY 1 123 124 /* _DCS (Device Currrent Status) value bits and masks. */ 125 #define DCS_EXISTS (1 << 0) 126 #define DCS_ACTIVE (1 << 1) 127 #define DCS_READY (1 << 2) 128 #define DCS_FUNCTIONAL (1 << 3) 129 #define DCS_ATTACHED (1 << 4) 130 131 /* _DSS (Device Set Status) argument bits and masks. */ 132 #define DSS_INACTIVE 0 133 #define DSS_ACTIVE (1 << 0) 134 #define DSS_ACTIVITY (1 << 0) 135 #define DSS_SETNEXT (1 << 30) 136 #define DSS_COMMIT (1 << 31) 137 138 static device_method_t acpi_video_methods[] = { 139 DEVMETHOD(device_probe, acpi_video_probe), 140 DEVMETHOD(device_attach, acpi_video_attach), 141 DEVMETHOD(device_detach, acpi_video_detach), 142 DEVMETHOD(device_shutdown, acpi_video_shutdown), 143 { 0, 0 } 144 }; 145 146 static driver_t acpi_video_driver = { 147 "acpi_video", 148 acpi_video_methods, 149 sizeof(struct acpi_video_softc), 150 }; 151 152 static devclass_t acpi_video_devclass; 153 154 DRIVER_MODULE(acpi_video, pci, acpi_video_driver, acpi_video_devclass, 155 acpi_video_modevent, NULL); 156 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 157 158 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 159 static struct sysctl_oid *acpi_video_sysctl_tree; 160 static struct acpi_video_output_queue lcd_units, crt_units, tv_units, 161 other_units; 162 163 ACPI_SERIAL_DECL(video, "ACPI video"); 164 MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 165 166 static int 167 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 168 { 169 int err = 0; 170 171 switch (evt) { 172 case MOD_LOAD: 173 acpi_video_sysctl_tree = NULL; 174 sysctl_ctx_init(&acpi_video_sysctl_ctx); 175 STAILQ_INIT(&lcd_units); 176 STAILQ_INIT(&crt_units); 177 STAILQ_INIT(&tv_units); 178 STAILQ_INIT(&other_units); 179 break; 180 case MOD_UNLOAD: 181 sysctl_ctx_free(&acpi_video_sysctl_ctx); 182 acpi_video_sysctl_tree = NULL; 183 break; 184 default: 185 err = EINVAL; 186 } 187 188 return (err); 189 } 190 191 static int 192 acpi_video_probe(device_t dev) 193 { 194 ACPI_HANDLE devh, h; 195 ACPI_OBJECT_TYPE t_dos; 196 197 devh = acpi_get_handle(dev); 198 if (acpi_disabled("video") || 199 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 200 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 201 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 202 t_dos != ACPI_TYPE_METHOD) 203 return (ENXIO); 204 205 device_set_desc(dev, "ACPI video extension"); 206 return (0); 207 } 208 209 static int 210 acpi_video_attach(device_t dev) 211 { 212 struct acpi_softc *acpi_sc; 213 struct acpi_video_softc *sc; 214 215 sc = device_get_softc(dev); 216 217 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 218 if (acpi_sc == NULL) 219 return (ENXIO); 220 if (acpi_video_sysctl_tree == NULL) { 221 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 222 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 223 OID_AUTO, "video", CTLFLAG_RD, 0, 224 "video extension control"); 225 } 226 227 sc->device = dev; 228 sc->handle = acpi_get_handle(dev); 229 STAILQ_INIT(&sc->vid_outputs); 230 231 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 232 acpi_video_notify_handler, sc); 233 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 234 acpi_video_power_profile, sc, 0); 235 236 ACPI_SERIAL_BEGIN(video); 237 acpi_video_bind_outputs(sc); 238 ACPI_SERIAL_END(video); 239 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM); 240 241 acpi_video_power_profile(sc); 242 243 return (0); 244 } 245 246 static int 247 acpi_video_detach(device_t dev) 248 { 249 struct acpi_video_softc *sc; 250 struct acpi_video_output *vo, *vn; 251 252 sc = device_get_softc(dev); 253 254 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 255 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 256 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 257 acpi_video_notify_handler); 258 259 ACPI_SERIAL_BEGIN(video); 260 for (vo = STAILQ_FIRST(&sc->vid_outputs); vo != NULL; vo = vn) { 261 vn = STAILQ_NEXT(vo, vo_next); 262 acpi_video_vo_destroy(vo); 263 } 264 ACPI_SERIAL_END(video); 265 266 return (0); 267 } 268 269 static int 270 acpi_video_shutdown(device_t dev) 271 { 272 struct acpi_video_softc *sc; 273 274 sc = device_get_softc(dev); 275 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 276 277 return (0); 278 } 279 280 static void 281 acpi_video_notify_handler(ACPI_HANDLE handle __unused, UINT32 notify, 282 void *context) 283 { 284 struct acpi_video_softc *sc; 285 struct acpi_video_output *vo, *vo_tmp; 286 ACPI_HANDLE lasthand = NULL; 287 UINT32 dcs, dss, dss_p = 0; 288 289 sc = context; 290 291 switch (notify) { 292 case VID_NOTIFY_SWITCHED: 293 ACPI_SERIAL_BEGIN(video); 294 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 295 dss = vo_get_graphics_state(vo->handle); 296 dcs = vo_get_device_status(vo->handle); 297 if (!(dcs & DCS_READY)) 298 dss = DSS_INACTIVE; 299 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 300 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 301 if (lasthand != NULL) 302 vo_set_device_state(lasthand, dss_p); 303 dss_p = dss; 304 lasthand = vo->handle; 305 } 306 } 307 if (lasthand != NULL) 308 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 309 ACPI_SERIAL_END(video); 310 break; 311 case VID_NOTIFY_REPROBE: 312 ACPI_SERIAL_BEGIN(video); 313 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 314 vo->handle = NULL; 315 acpi_video_bind_outputs(sc); 316 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 317 if (vo->handle == NULL) { 318 STAILQ_REMOVE(&sc->vid_outputs, vo, 319 acpi_video_output, vo_next); 320 acpi_video_vo_destroy(vo); 321 } 322 } 323 ACPI_SERIAL_END(video); 324 break; 325 default: 326 device_printf(sc->device, 327 "unknown notify event 0x%x\n", notify); 328 } 329 } 330 331 static void 332 acpi_video_power_profile(void *context) 333 { 334 int state; 335 struct acpi_video_softc *sc; 336 struct acpi_video_output *vo; 337 338 sc = context; 339 state = power_profile_get_state(); 340 if (state != POWER_PROFILE_PERFORMANCE && 341 state != POWER_PROFILE_ECONOMY) 342 return; 343 344 ACPI_SERIAL_BEGIN(video); 345 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 346 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 347 vo_set_brightness(vo->handle, 348 state == POWER_PROFILE_ECONOMY 349 ? vo->vo_economy : vo->vo_fullpower); 350 } 351 ACPI_SERIAL_END(video); 352 } 353 354 static void 355 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 356 { 357 struct acpi_video_softc *sc; 358 struct acpi_video_output *vo; 359 360 ACPI_SERIAL_ASSERT(video); 361 sc = context; 362 363 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 364 if (vo->adr == adr) { 365 acpi_video_vo_bind(vo, handle); 366 return; 367 } 368 } 369 vo = acpi_video_vo_init(adr); 370 if (vo != NULL) { 371 acpi_video_vo_bind(vo, handle); 372 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 373 } 374 } 375 376 static void 377 acpi_video_bind_outputs(struct acpi_video_softc *sc) 378 { 379 380 ACPI_SERIAL_ASSERT(video); 381 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 382 } 383 384 static struct acpi_video_output * 385 acpi_video_vo_init(UINT32 adr) 386 { 387 struct acpi_video_output *vn, *vo, *vp; 388 int n, x; 389 char name[64], env[128]; 390 const char *type, *desc; 391 struct acpi_video_output_queue *voqh; 392 393 ACPI_SERIAL_ASSERT(video); 394 switch (adr & DOD_DEVID_MASK) { 395 case DOD_DEVID_MONITOR: 396 desc = "CRT monitor"; 397 type = "crt"; 398 voqh = &crt_units; 399 break; 400 case DOD_DEVID_PANEL: 401 desc = "LCD panel"; 402 type = "lcd"; 403 voqh = &lcd_units; 404 break; 405 case DOD_DEVID_TV: 406 desc = "TV"; 407 type = "tv"; 408 voqh = &tv_units; 409 break; 410 default: 411 desc = "unknown output"; 412 type = "out"; 413 voqh = &other_units; 414 } 415 416 n = 0; 417 vn = vp = NULL; 418 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 419 if (vn->vo_unit.num != n) 420 break; 421 vp = vn; 422 n++; 423 } 424 425 snprintf(name, sizeof(name), "%s%d", type, n); 426 427 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 428 if (vo != NULL) { 429 vo->handle = NULL; 430 vo->adr = adr; 431 vo->vo_unit.num = n; 432 vo->vo_brightness = -1; 433 vo->vo_fullpower = -1; /* TODO: override with tunables */ 434 vo->vo_economy = -1; 435 vo->vo_numlevels = 0; 436 vo->vo_levels = NULL; 437 snprintf(env, 128, "hw.acpi.video.%s.fullpower", name); 438 if (getenv_int(env, &x)) 439 vo->vo_fullpower = x; 440 snprintf(env, 128, "hw.acpi.video.%s.economy", name); 441 if (getenv_int(env, &x)) 442 vo->vo_economy = x; 443 444 sysctl_ctx_init(&vo->vo_sysctl_ctx); 445 if (vp != NULL) 446 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 447 else 448 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 449 if (acpi_video_sysctl_tree != NULL) 450 vo->vo_sysctl_tree = 451 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 452 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 453 OID_AUTO, name, CTLFLAG_RD, 0, desc); 454 if (vo->vo_sysctl_tree != NULL) { 455 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 456 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 457 OID_AUTO, "active", 458 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 459 acpi_video_vo_active_sysctl, "I", 460 "current activity of this device"); 461 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 462 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 463 OID_AUTO, "brightness", 464 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 465 acpi_video_vo_bright_sysctl, "I", 466 "current brightness level"); 467 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 468 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 469 OID_AUTO, "fullpower", 470 CTLTYPE_INT|CTLFLAG_RW, vo, 471 POWER_PROFILE_PERFORMANCE, 472 acpi_video_vo_presets_sysctl, "I", 473 "preset level for full power mode"); 474 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 475 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 476 OID_AUTO, "economy", 477 CTLTYPE_INT|CTLFLAG_RW, vo, 478 POWER_PROFILE_ECONOMY, 479 acpi_video_vo_presets_sysctl, "I", 480 "preset level for economy mode"); 481 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 482 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 483 OID_AUTO, "levels", 484 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 485 acpi_video_vo_levels_sysctl, "I", 486 "supported brightness levels"); 487 } else 488 printf("%s: sysctl node creation failed\n", type); 489 } else 490 printf("%s: softc allocation failed\n", type); 491 492 if (bootverbose) { 493 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK); 494 if (adr & DOD_BIOS) 495 printf(", detectable by BIOS"); 496 if (adr & DOD_NONVGA) 497 printf(" (not a VGA output)"); 498 printf(", head #%d\n", 499 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 500 } 501 return (vo); 502 } 503 504 static void 505 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 506 { 507 508 ACPI_SERIAL_ASSERT(video); 509 if (vo->vo_levels != NULL) 510 AcpiOsFree(vo->vo_levels); 511 vo->handle = handle; 512 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 513 if (vo->vo_numlevels >= 2) { 514 if (vo->vo_fullpower == -1 515 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 516 /* XXX - can't deal with rebinding... */ 517 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 518 if (vo->vo_economy == -1 519 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 520 /* XXX - see above. */ 521 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 522 } 523 } 524 525 static void 526 acpi_video_vo_destroy(struct acpi_video_output *vo) 527 { 528 struct acpi_video_output_queue *voqh; 529 530 ACPI_SERIAL_ASSERT(video); 531 if (vo->vo_sysctl_tree != NULL) { 532 vo->vo_sysctl_tree = NULL; 533 sysctl_ctx_free(&vo->vo_sysctl_ctx); 534 } 535 if (vo->vo_levels != NULL) 536 AcpiOsFree(vo->vo_levels); 537 538 switch (vo->adr & DOD_DEVID_MASK) { 539 case DOD_DEVID_MONITOR: 540 voqh = &crt_units; 541 break; 542 case DOD_DEVID_PANEL: 543 voqh = &lcd_units; 544 break; 545 case DOD_DEVID_TV: 546 voqh = &tv_units; 547 break; 548 default: 549 voqh = &other_units; 550 } 551 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 552 free(vo, M_ACPIVIDEO); 553 } 554 555 static int 556 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 557 { 558 int i; 559 560 ACPI_SERIAL_ASSERT(video); 561 if (vo->vo_levels == NULL) 562 return (ENODEV); 563 for (i = 0; i < vo->vo_numlevels; i++) 564 if (vo->vo_levels[i] == level) 565 return (0); 566 return (EINVAL); 567 } 568 569 /* ARGSUSED */ 570 static int 571 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 572 { 573 struct acpi_video_output *vo; 574 int state, err; 575 576 vo = (struct acpi_video_output *)arg1; 577 if (vo->handle == NULL) 578 return (ENXIO); 579 ACPI_SERIAL_BEGIN(video); 580 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 581 err = sysctl_handle_int(oidp, &state, 0, req); 582 if (err != 0 || req->newptr == NULL) 583 goto out; 584 vo_set_device_state(vo->handle, 585 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 586 out: 587 ACPI_SERIAL_END(video); 588 return (err); 589 } 590 591 /* ARGSUSED */ 592 static int 593 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 594 { 595 struct acpi_video_output *vo; 596 int level, preset, err; 597 598 vo = (struct acpi_video_output *)arg1; 599 ACPI_SERIAL_BEGIN(video); 600 if (vo->handle == NULL) { 601 err = ENXIO; 602 goto out; 603 } 604 if (vo->vo_levels == NULL) { 605 err = ENODEV; 606 goto out; 607 } 608 609 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 610 vo->vo_economy : vo->vo_fullpower; 611 level = vo->vo_brightness; 612 if (level == -1) 613 level = preset; 614 615 err = sysctl_handle_int(oidp, &level, 0, req); 616 if (err != 0 || req->newptr == NULL) 617 goto out; 618 if (level < -1 || level > 100) { 619 err = EINVAL; 620 goto out; 621 } 622 623 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 624 goto out; 625 vo->vo_brightness = level; 626 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 627 628 out: 629 ACPI_SERIAL_END(video); 630 return (err); 631 } 632 633 static int 634 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 635 { 636 struct acpi_video_output *vo; 637 int i, level, *preset, err = 0; 638 639 vo = (struct acpi_video_output *)arg1; 640 ACPI_SERIAL_BEGIN(video); 641 if (vo->handle == NULL) { 642 err = ENXIO; 643 goto out; 644 } 645 if (vo->vo_levels == NULL) { 646 err = ENODEV; 647 goto out; 648 } 649 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 650 &vo->vo_economy : &vo->vo_fullpower; 651 level = *preset; 652 err = sysctl_handle_int(oidp, &level, 0, req); 653 if (err != 0 || req->newptr == NULL) 654 goto out; 655 if (level < -1 || level > 100) { 656 err = EINVAL; 657 goto out; 658 } 659 if (level == -1) { 660 i = (arg2 == POWER_PROFILE_ECONOMY) ? 661 BCL_ECONOMY : BCL_FULLPOWER; 662 level = vo->vo_levels[i]; 663 } 664 else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 665 goto out; 666 667 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 668 vo_set_brightness(vo->handle, level); 669 *preset = level; 670 671 out: 672 ACPI_SERIAL_END(video); 673 return (err); 674 } 675 676 /* ARGSUSED */ 677 static int 678 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 679 { 680 struct acpi_video_output *vo; 681 int err; 682 683 vo = (struct acpi_video_output *)arg1; 684 ACPI_SERIAL_BEGIN(video); 685 if (vo->vo_levels == NULL) { 686 err = ENODEV; 687 goto out; 688 } 689 if (req->newptr != NULL) { 690 err = EPERM; 691 goto out; 692 } 693 err = sysctl_handle_opaque(oidp, vo->vo_levels, 694 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 695 696 out: 697 ACPI_SERIAL_END(video); 698 return (err); 699 } 700 701 static void 702 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 703 { 704 ACPI_STATUS status; 705 706 status = acpi_SetInteger(handle, "_DOS", policy); 707 if (ACPI_FAILURE(status)) 708 printf("can't evaluate %s._DOS - %s\n", 709 acpi_name(handle), AcpiFormatException(status)); 710 } 711 712 struct enum_callback_arg { 713 void (*callback)(ACPI_HANDLE, UINT32, void *); 714 void *context; 715 ACPI_OBJECT *dod_pkg; 716 int count; 717 }; 718 719 static ACPI_STATUS 720 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 721 void *context, void **retp __unused) 722 { 723 ACPI_STATUS status; 724 UINT32 adr, val; 725 struct enum_callback_arg *argset; 726 size_t i; 727 728 ACPI_SERIAL_ASSERT(video); 729 argset = context; 730 status = acpi_GetInteger(handle, "_ADR", &adr); 731 if (ACPI_FAILURE(status)) 732 return (AE_OK); 733 734 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 735 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 736 (val & DOD_DEVID_MASK) == adr) { 737 argset->callback(handle, val, argset->context); 738 argset->count++; 739 } 740 } 741 742 return (AE_OK); 743 } 744 745 static int 746 vid_enum_outputs(ACPI_HANDLE handle, 747 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 748 { 749 ACPI_STATUS status; 750 ACPI_BUFFER dod_buf; 751 ACPI_OBJECT *res; 752 struct enum_callback_arg argset; 753 754 ACPI_SERIAL_ASSERT(video); 755 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 756 dod_buf.Pointer = NULL; 757 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 758 if (ACPI_FAILURE(status)) { 759 if (status != AE_NOT_FOUND) 760 printf("can't evaluate %s._DOD - %s\n", 761 acpi_name(handle), AcpiFormatException(status)); 762 argset.count = -1; 763 goto out; 764 } 765 res = (ACPI_OBJECT *)dod_buf.Pointer; 766 if (!ACPI_PKG_VALID(res, 1)) { 767 printf("evaluation of %s._DOD makes no sense\n", 768 acpi_name(handle)); 769 argset.count = -1; 770 goto out; 771 } 772 if (callback == NULL) { 773 argset.count = res->Package.Count; 774 goto out; 775 } 776 argset.callback = callback; 777 argset.context = context; 778 argset.dod_pkg = res; 779 argset.count = 0; 780 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 781 vid_enum_outputs_subr, &argset, NULL); 782 if (ACPI_FAILURE(status)) 783 printf("failed walking down %s - %s\n", 784 acpi_name(handle), AcpiFormatException(status)); 785 out: 786 if (dod_buf.Pointer != NULL) 787 AcpiOsFree(dod_buf.Pointer); 788 return (argset.count); 789 } 790 791 static int 792 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 793 { 794 ACPI_STATUS status; 795 ACPI_BUFFER bcl_buf; 796 ACPI_OBJECT *res; 797 int num = 0, i, n, *levels; 798 799 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 800 bcl_buf.Pointer = NULL; 801 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 802 if (ACPI_FAILURE(status)) { 803 if (status != AE_NOT_FOUND) 804 printf("can't evaluate %s._BCL - %s\n", 805 acpi_name(handle), AcpiFormatException(status)); 806 num = -1; 807 goto out; 808 } 809 res = (ACPI_OBJECT *)bcl_buf.Pointer; 810 if (!ACPI_PKG_VALID(res, 2)) { 811 printf("evaluation of %s._BCL makes no sense\n", 812 acpi_name(handle)); 813 num = -1; 814 goto out; 815 } 816 num = res->Package.Count; 817 if (levelp == NULL) 818 goto out; 819 levels = AcpiOsAllocate(num * sizeof(*levels)); 820 if (levels == NULL) { 821 num = -1; 822 goto out; 823 } 824 for (i = 0, n = 0; i < num; i++) 825 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 826 n++; 827 if (n < 2) { 828 num = -1; 829 AcpiOsFree(levels); 830 } else { 831 num = n; 832 *levelp = levels; 833 } 834 out: 835 if (bcl_buf.Pointer != NULL) 836 AcpiOsFree(bcl_buf.Pointer); 837 838 return (num); 839 } 840 841 static void 842 vo_set_brightness(ACPI_HANDLE handle, int level) 843 { 844 ACPI_STATUS status; 845 846 status = acpi_SetInteger(handle, "_BCM", level); 847 if (ACPI_FAILURE(status)) 848 printf("can't evaluate %s._BCM - %s\n", 849 acpi_name(handle), AcpiFormatException(status)); 850 } 851 852 static UINT32 853 vo_get_device_status(ACPI_HANDLE handle) 854 { 855 UINT32 dcs = 0; 856 ACPI_STATUS status; 857 858 status = acpi_GetInteger(handle, "_DCS", &dcs); 859 if (ACPI_FAILURE(status)) 860 printf("can't evaluate %s._DCS - %s\n", 861 acpi_name(handle), AcpiFormatException(status)); 862 863 return (dcs); 864 } 865 866 static UINT32 867 vo_get_graphics_state(ACPI_HANDLE handle) 868 { 869 UINT32 dgs = 0; 870 ACPI_STATUS status; 871 872 status = acpi_GetInteger(handle, "_DGS", &dgs); 873 if (ACPI_FAILURE(status)) 874 printf("can't evaluate %s._DGS - %s\n", 875 acpi_name(handle), AcpiFormatException(status)); 876 877 return (dgs); 878 } 879 880 static void 881 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 882 { 883 ACPI_STATUS status; 884 885 status = acpi_SetInteger(handle, "_DSS", state); 886 if (ACPI_FAILURE(status)) 887 printf("can't evaluate %s._DSS - %s\n", 888 acpi_name(handle), AcpiFormatException(status)); 889 }
Cache object: 009dce321b592b31b052fa820943306a
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