Lines Matching full:video
3 * video.c - ACPI Video Driver
10 #define pr_fmt(fmt) "ACPI: video: " fmt
28 #include <acpi/video.h>
32 #define ACPI_VIDEO_BUS_NAME "Video Bus"
33 #define ACPI_VIDEO_DEVICE_NAME "Video Device"
38 MODULE_DESCRIPTION("ACPI Video Driver");
45 * By default, we don't allow duplicate ACPI video bus devices
102 .name = "video",
112 u8 multihead:1; /* can switch video heads */
113 u8 rom:1; /* can retrieve a video rom */
124 u8 _VPO:1; /* Video POST Options */
201 struct acpi_video_bus *video; member
209 static void acpi_video_device_rebind(struct acpi_video_bus *video);
210 static void acpi_video_device_bind(struct acpi_video_bus *video,
212 static int acpi_video_device_enumerate(struct acpi_video_bus *video);
257 struct acpi_video_device *video = cooling_dev->devdata; in video_get_max_state() local
259 *state = video->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; in video_get_max_state()
266 struct acpi_video_device *video = cooling_dev->devdata; in video_get_cur_state() local
270 if (acpi_video_device_lcd_get_level_current(video, &level, false)) in video_get_cur_state()
272 for (offset = ACPI_VIDEO_FIRST_LEVEL; offset < video->brightness->count; in video_get_cur_state()
274 if (level == video->brightness->levels[offset]) { in video_get_cur_state()
275 *state = video->brightness->count - offset - 1; in video_get_cur_state()
285 struct acpi_video_device *video = cooling_dev->devdata; in video_set_cur_state() local
288 if (state >= video->brightness->count - ACPI_VIDEO_FIRST_LEVEL) in video_set_cur_state()
291 state = video->brightness->count - state; in video_set_cur_state()
292 level = video->brightness->levels[state - 1]; in video_set_cur_state()
293 return acpi_video_device_lcd_set_level(video, level); in video_set_cur_state()
304 * Video Management
464 * Some machines have multiple video output devices, but only the one
466 * register backlight interface for other video output devices.
481 * events, in this case acpi-video is considered the canonical source
601 * ACPI video backlight still works w/ buggy _BQC. in acpi_video_device_lcd_get_level_current()
616 * @device: video output device (LCD, CRT, ..)
676 * video : video bus device pointer
700 acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) in acpi_video_bus_DOS() argument
704 if (!video->cap._DOS) in acpi_video_bus_DOS()
709 video->dos_setting = (lcd_flag << 2) | bios_flag; in acpi_video_bus_DOS()
710 status = acpi_execute_simple_method(video->device->handle, "_DOS", in acpi_video_bus_DOS()
917 * device : video output device (LCD, CRT, ..)
991 * device : video output device (LCD, CRT, ..)
1022 * device : video output device (VGA)
1027 * Find out all required AML methods defined under the video bus device.
1030 static void acpi_video_bus_find_cap(struct acpi_video_bus *video) in acpi_video_bus_find_cap() argument
1032 if (acpi_has_method(video->device->handle, "_DOS")) in acpi_video_bus_find_cap()
1033 video->cap._DOS = 1; in acpi_video_bus_find_cap()
1034 if (acpi_has_method(video->device->handle, "_DOD")) in acpi_video_bus_find_cap()
1035 video->cap._DOD = 1; in acpi_video_bus_find_cap()
1036 if (acpi_has_method(video->device->handle, "_ROM")) in acpi_video_bus_find_cap()
1037 video->cap._ROM = 1; in acpi_video_bus_find_cap()
1038 if (acpi_has_method(video->device->handle, "_GPD")) in acpi_video_bus_find_cap()
1039 video->cap._GPD = 1; in acpi_video_bus_find_cap()
1040 if (acpi_has_method(video->device->handle, "_SPD")) in acpi_video_bus_find_cap()
1041 video->cap._SPD = 1; in acpi_video_bus_find_cap()
1042 if (acpi_has_method(video->device->handle, "_VPO")) in acpi_video_bus_find_cap()
1043 video->cap._VPO = 1; in acpi_video_bus_find_cap()
1047 * Check whether the video bus device has required AML method to
1051 static int acpi_video_bus_check(struct acpi_video_bus *video) in acpi_video_bus_check() argument
1056 if (!video) in acpi_video_bus_check()
1059 dev = acpi_get_pci_dev(video->device->handle); in acpi_video_bus_check()
1069 /* Does this device support video switching? */ in acpi_video_bus_check()
1070 if (video->cap._DOS || video->cap._DOD) { in acpi_video_bus_check()
1071 if (!video->cap._DOS) { in acpi_video_bus_check()
1073 acpi_device_bid(video->device)); in acpi_video_bus_check()
1075 video->flags.multihead = 1; in acpi_video_bus_check()
1079 /* Does this device support retrieving a video ROM? */ in acpi_video_bus_check()
1080 if (video->cap._ROM) { in acpi_video_bus_check()
1081 video->flags.rom = 1; in acpi_video_bus_check()
1085 /* Does this device support configuring which video device to POST? */ in acpi_video_bus_check()
1086 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { in acpi_video_bus_check()
1087 video->flags.post = 1; in acpi_video_bus_check()
1102 acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) in acpi_video_get_device_attr() argument
1107 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_attr()
1108 ids = &video->attached_array[i]; in acpi_video_get_device_attr()
1117 acpi_video_get_device_type(struct acpi_video_bus *video, in acpi_video_get_device_type() argument
1123 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_type()
1124 ids = &video->attached_array[i]; in acpi_video_get_device_type()
1134 struct acpi_video_bus *video = arg; in acpi_video_bus_get_one_device() local
1156 data->video = video; in acpi_video_bus_get_one_device()
1161 attribute = acpi_video_get_device_attr(video, device_id); in acpi_video_bus_get_one_device()
1185 device_type = acpi_video_get_device_type(video, device_id); in acpi_video_bus_get_one_device()
1202 acpi_video_device_bind(video, data); in acpi_video_bus_get_one_device()
1208 mutex_lock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1209 list_add_tail(&data->entry, &video->video_device_list); in acpi_video_bus_get_one_device()
1210 mutex_unlock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1213 video->child_count++; in acpi_video_bus_get_one_device()
1219 * video : video bus device
1224 * Enumerate the video device list of the video bus,
1225 * bind the ids with the corresponding video devices
1226 * under the video bus.
1229 static void acpi_video_device_rebind(struct acpi_video_bus *video) in acpi_video_device_rebind() argument
1233 mutex_lock(&video->device_list_lock); in acpi_video_device_rebind()
1235 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_device_rebind()
1236 acpi_video_device_bind(video, dev); in acpi_video_device_rebind()
1238 mutex_unlock(&video->device_list_lock); in acpi_video_device_rebind()
1243 * video : video bus device
1244 * device : video output device under the video
1250 * Bind the ids with the corresponding video devices
1251 * under the video bus.
1255 acpi_video_device_bind(struct acpi_video_bus *video, in acpi_video_device_bind() argument
1261 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_bind()
1262 ids = &video->attached_array[i]; in acpi_video_device_bind()
1265 acpi_handle_debug(video->device->handle, "%s: %d\n", in acpi_video_device_bind()
1273 struct acpi_video_bus *video = device->video; in acpi_video_device_in_dod() local
1281 if (!video->attached_count || video->child_count > 8) in acpi_video_device_in_dod()
1284 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_in_dod()
1285 if ((video->attached_array[i].value.int_val & 0xfff) == in acpi_video_device_in_dod()
1295 * video : video bus device
1304 static int acpi_video_device_enumerate(struct acpi_video_bus *video) in acpi_video_device_enumerate() argument
1314 if (!video->cap._DOD) in acpi_video_device_enumerate()
1317 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); in acpi_video_device_enumerate()
1319 acpi_handle_info(video->device->handle, in acpi_video_device_enumerate()
1327 acpi_handle_info(video->device->handle, "Invalid _DOD data\n"); in acpi_video_device_enumerate()
1332 acpi_handle_debug(video->device->handle, "Found %d video heads in _DOD\n", in acpi_video_device_enumerate()
1348 acpi_handle_info(video->device->handle, in acpi_video_device_enumerate()
1356 acpi_handle_debug(video->device->handle, in acpi_video_device_enumerate()
1363 kfree(video->attached_array); in acpi_video_device_enumerate()
1365 video->attached_array = active_list; in acpi_video_device_enumerate()
1366 video->attached_count = count; in acpi_video_device_enumerate()
1457 struct acpi_video_bus *video; in acpi_video_get_edid() local
1464 video = acpi_driver_data(device); in acpi_video_get_edid()
1466 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_edid()
1467 video_device = video->attached_array[i].bind_info; in acpi_video_get_edid()
1510 acpi_video_bus_get_devices(struct acpi_video_bus *video, in acpi_video_bus_get_devices() argument
1514 * There are systems where video module known to work fine regardless in acpi_video_bus_get_devices()
1518 acpi_video_device_enumerate(video); in acpi_video_bus_get_devices()
1520 return acpi_dev_for_each_child(device, acpi_video_bus_get_one_device, video); in acpi_video_bus_get_devices()
1529 static int acpi_video_bus_start_devices(struct acpi_video_bus *video) in acpi_video_bus_start_devices() argument
1531 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_start_devices()
1535 static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) in acpi_video_bus_stop_devices() argument
1537 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_stop_devices()
1544 struct acpi_video_bus *video = acpi_driver_data(device); in acpi_video_bus_notify() local
1548 if (!video || !video->input) in acpi_video_bus_notify()
1551 input = video->input; in acpi_video_bus_notify()
1559 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video in acpi_video_bus_notify()
1561 acpi_video_device_enumerate(video); in acpi_video_bus_notify()
1562 acpi_video_device_rebind(video); in acpi_video_bus_notify()
1616 bus = video_device->video; in acpi_video_device_notify()
1669 struct acpi_video_bus *video; in acpi_video_resume() local
1677 video = container_of(nb, struct acpi_video_bus, pm_nb); in acpi_video_resume()
1679 dev_info(&video->device->dev, "Restoring backlight state\n"); in acpi_video_resume()
1681 for (i = 0; i < video->attached_count; i++) { in acpi_video_resume()
1682 video_device = video->attached_array[i].bind_info; in acpi_video_resume()
1768 * register video output if cooling device registration failed? in acpi_video_dev_register_backlight()
1789 static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) in acpi_video_run_bcl_for_osi() argument
1794 mutex_lock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1795 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_run_bcl_for_osi()
1799 mutex_unlock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1805 * Do not create backlight device for video output in acpi_video_should_register_backlight()
1818 static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) in acpi_video_bus_register_backlight() argument
1822 if (video->backlight_registered) in acpi_video_bus_register_backlight()
1828 mutex_lock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1829 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_bus_register_backlight()
1833 mutex_unlock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1835 video->backlight_registered = true; in acpi_video_bus_register_backlight()
1837 video->pm_nb.notifier_call = acpi_video_resume; in acpi_video_bus_register_backlight()
1838 video->pm_nb.priority = 0; in acpi_video_bus_register_backlight()
1839 return register_pm_notifier(&video->pm_nb); in acpi_video_bus_register_backlight()
1861 static int acpi_video_bus_unregister_backlight(struct acpi_video_bus *video) in acpi_video_bus_unregister_backlight() argument
1866 if (!video->backlight_registered) in acpi_video_bus_unregister_backlight()
1869 error = unregister_pm_notifier(&video->pm_nb); in acpi_video_bus_unregister_backlight()
1871 mutex_lock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1872 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_unregister_backlight()
1874 mutex_unlock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1876 video->backlight_registered = false; in acpi_video_bus_unregister_backlight()
1894 static int acpi_video_bus_add_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_add_notify_handler() argument
1900 video->input = input = input_allocate_device(); in acpi_video_bus_add_notify_handler()
1906 error = acpi_video_bus_start_devices(video); in acpi_video_bus_add_notify_handler()
1910 snprintf(video->phys, sizeof(video->phys), in acpi_video_bus_add_notify_handler()
1911 "%s/video/input0", acpi_device_hid(video->device)); in acpi_video_bus_add_notify_handler()
1913 input->name = acpi_device_name(video->device); in acpi_video_bus_add_notify_handler()
1914 input->phys = video->phys; in acpi_video_bus_add_notify_handler()
1917 input->dev.parent = &video->device->dev; in acpi_video_bus_add_notify_handler()
1932 mutex_lock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1933 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_add_notify_handler()
1935 mutex_unlock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1940 acpi_video_bus_stop_devices(video); in acpi_video_bus_add_notify_handler()
1943 video->input = NULL; in acpi_video_bus_add_notify_handler()
1957 static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_remove_notify_handler() argument
1961 mutex_lock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
1962 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_remove_notify_handler()
1964 mutex_unlock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
1966 acpi_video_bus_stop_devices(video); in acpi_video_bus_remove_notify_handler()
1967 input_unregister_device(video->input); in acpi_video_bus_remove_notify_handler()
1968 video->input = NULL; in acpi_video_bus_remove_notify_handler()
1971 static int acpi_video_bus_put_devices(struct acpi_video_bus *video) in acpi_video_bus_put_devices() argument
1975 mutex_lock(&video->device_list_lock); in acpi_video_bus_put_devices()
1976 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { in acpi_video_bus_put_devices()
1980 mutex_unlock(&video->device_list_lock); in acpi_video_bus_put_devices()
1989 struct acpi_video_bus *video; in acpi_video_bus_add() local
2000 "Duplicate ACPI video bus devices for the" in acpi_video_bus_add()
2002 "parameter \"video.allow_duplicates=1\"" in acpi_video_bus_add()
2008 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); in acpi_video_bus_add()
2009 if (!video) in acpi_video_bus_add()
2025 video->device = device; in acpi_video_bus_add()
2028 device->driver_data = video; in acpi_video_bus_add()
2030 acpi_video_bus_find_cap(video); in acpi_video_bus_add()
2031 error = acpi_video_bus_check(video); in acpi_video_bus_add()
2035 mutex_init(&video->device_list_lock); in acpi_video_bus_add()
2036 INIT_LIST_HEAD(&video->video_device_list); in acpi_video_bus_add()
2038 error = acpi_video_bus_get_devices(video, device); in acpi_video_bus_add()
2043 * HP ZBook Fury 16 G10 requires ACPI video's child devices have _PS0 in acpi_video_bus_add()
2050 str_yes_no(video->flags.multihead), in acpi_video_bus_add()
2051 str_yes_no(video->flags.rom), in acpi_video_bus_add()
2052 str_yes_no(video->flags.post)); in acpi_video_bus_add()
2054 list_add_tail(&video->entry, &video_bus_head); in acpi_video_bus_add()
2059 * show up later and this may change the result from video to native. in acpi_video_bus_add()
2067 acpi_video_run_bcl_for_osi(video); in acpi_video_bus_add()
2070 acpi_video_bus_register_backlight(video); in acpi_video_bus_add()
2072 error = acpi_video_bus_add_notify_handler(video); in acpi_video_bus_add()
2084 acpi_video_bus_remove_notify_handler(video); in acpi_video_bus_add()
2087 list_del(&video->entry); in acpi_video_bus_add()
2089 acpi_video_bus_unregister_backlight(video); in acpi_video_bus_add()
2091 acpi_video_bus_put_devices(video); in acpi_video_bus_add()
2092 kfree(video->attached_array); in acpi_video_bus_add()
2094 kfree(video); in acpi_video_bus_add()
2102 struct acpi_video_bus *video = NULL; in acpi_video_bus_remove() local
2108 video = acpi_driver_data(device); in acpi_video_bus_remove()
2114 list_del(&video->entry); in acpi_video_bus_remove()
2117 acpi_video_bus_remove_notify_handler(video); in acpi_video_bus_remove()
2118 acpi_video_bus_unregister_backlight(video); in acpi_video_bus_remove()
2119 acpi_video_bus_put_devices(video); in acpi_video_bus_remove()
2121 kfree(video->attached_array); in acpi_video_bus_remove()
2122 kfree(video); in acpi_video_bus_remove()
2201 struct acpi_video_bus *video; in acpi_video_register_backlight() local
2204 list_for_each_entry(video, &video_bus_head, entry) in acpi_video_register_backlight()
2205 acpi_video_bus_register_backlight(video); in acpi_video_register_backlight()
2219 * the video opregion code to be run first in order to initialise
2220 * state before any ACPI video calls are made. To handle this we defer
2221 * registration of the video class until the opregion code has run.