Lines Matching full:video
3 * video.c - ACPI Video Driver
26 #include <acpi/video.h>
31 #define ACPI_VIDEO_BUS_NAME "Video Bus"
32 #define ACPI_VIDEO_DEVICE_NAME "Video Device"
37 ACPI_MODULE_NAME("video");
40 MODULE_DESCRIPTION("ACPI Video Driver");
47 * By default, we don't allow duplicate ACPI video bus devices
107 .name = "video",
118 u8 multihead:1; /* can switch video heads */
119 u8 rom:1; /* can retrieve a video rom */
130 u8 _VPO:1; /* Video POST Options */
207 struct acpi_video_bus *video; member
215 static void acpi_video_device_rebind(struct acpi_video_bus *video);
216 static void acpi_video_device_bind(struct acpi_video_bus *video,
218 static int acpi_video_device_enumerate(struct acpi_video_bus *video);
264 struct acpi_video_device *video = acpi_driver_data(device); in video_get_max_state() local
266 *state = video->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; in video_get_max_state()
274 struct acpi_video_device *video = acpi_driver_data(device); in video_get_cur_state() local
278 if (acpi_video_device_lcd_get_level_current(video, &level, false)) in video_get_cur_state()
280 for (offset = ACPI_VIDEO_FIRST_LEVEL; offset < video->brightness->count; in video_get_cur_state()
282 if (level == video->brightness->levels[offset]) { in video_get_cur_state()
283 *state = video->brightness->count - offset - 1; in video_get_cur_state()
294 struct acpi_video_device *video = acpi_driver_data(device); in video_set_cur_state() local
297 if (state >= video->brightness->count - ACPI_VIDEO_FIRST_LEVEL) in video_set_cur_state()
300 state = video->brightness->count - state; in video_set_cur_state()
301 level = video->brightness->levels[state - 1]; in video_set_cur_state()
302 return acpi_video_device_lcd_set_level(video, level); in video_set_cur_state()
313 * Video Management
468 * Some machines have a broken acpi-video interface for brightness
531 * Some machines have multiple video output devices, but only the one
533 * register backlight interface for other video output devices.
548 * events, in this case acpi-video is considered the canonical source
669 * ACPI video backlight still works w/ buggy _BQC. in acpi_video_device_lcd_get_level_current()
724 * video : video bus device pointer
748 acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) in acpi_video_bus_DOS() argument
752 if (!video->cap._DOS) in acpi_video_bus_DOS()
757 video->dos_setting = (lcd_flag << 2) | bios_flag; in acpi_video_bus_DOS()
758 status = acpi_execute_simple_method(video->device->handle, "_DOS", in acpi_video_bus_DOS()
966 * device : video output device (LCD, CRT, ..)
1040 * device : video output device (LCD, CRT, ..)
1070 * device : video output device (VGA)
1075 * Find out all required AML methods defined under the video bus device.
1078 static void acpi_video_bus_find_cap(struct acpi_video_bus *video) in acpi_video_bus_find_cap() argument
1080 if (acpi_has_method(video->device->handle, "_DOS")) in acpi_video_bus_find_cap()
1081 video->cap._DOS = 1; in acpi_video_bus_find_cap()
1082 if (acpi_has_method(video->device->handle, "_DOD")) in acpi_video_bus_find_cap()
1083 video->cap._DOD = 1; in acpi_video_bus_find_cap()
1084 if (acpi_has_method(video->device->handle, "_ROM")) in acpi_video_bus_find_cap()
1085 video->cap._ROM = 1; in acpi_video_bus_find_cap()
1086 if (acpi_has_method(video->device->handle, "_GPD")) in acpi_video_bus_find_cap()
1087 video->cap._GPD = 1; in acpi_video_bus_find_cap()
1088 if (acpi_has_method(video->device->handle, "_SPD")) in acpi_video_bus_find_cap()
1089 video->cap._SPD = 1; in acpi_video_bus_find_cap()
1090 if (acpi_has_method(video->device->handle, "_VPO")) in acpi_video_bus_find_cap()
1091 video->cap._VPO = 1; in acpi_video_bus_find_cap()
1095 * Check whether the video bus device has required AML method to
1099 static int acpi_video_bus_check(struct acpi_video_bus *video) in acpi_video_bus_check() argument
1104 if (!video) in acpi_video_bus_check()
1107 dev = acpi_get_pci_dev(video->device->handle); in acpi_video_bus_check()
1117 /* Does this device support video switching? */ in acpi_video_bus_check()
1118 if (video->cap._DOS || video->cap._DOD) { in acpi_video_bus_check()
1119 if (!video->cap._DOS) { in acpi_video_bus_check()
1122 acpi_device_bid(video->device)); in acpi_video_bus_check()
1124 video->flags.multihead = 1; in acpi_video_bus_check()
1128 /* Does this device support retrieving a video ROM? */ in acpi_video_bus_check()
1129 if (video->cap._ROM) { in acpi_video_bus_check()
1130 video->flags.rom = 1; in acpi_video_bus_check()
1134 /* Does this device support configuring which video device to POST? */ in acpi_video_bus_check()
1135 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { in acpi_video_bus_check()
1136 video->flags.post = 1; in acpi_video_bus_check()
1151 acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) in acpi_video_get_device_attr() argument
1156 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_attr()
1157 ids = &video->attached_array[i]; in acpi_video_get_device_attr()
1166 acpi_video_get_device_type(struct acpi_video_bus *video, in acpi_video_get_device_type() argument
1172 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_type()
1173 ids = &video->attached_array[i]; in acpi_video_get_device_type()
1183 struct acpi_video_bus *video) in acpi_video_bus_get_one_device() argument
1205 data->video = video; in acpi_video_bus_get_one_device()
1210 attribute = acpi_video_get_device_attr(video, device_id); in acpi_video_bus_get_one_device()
1234 device_type = acpi_video_get_device_type(video, device_id); in acpi_video_bus_get_one_device()
1251 acpi_video_device_bind(video, data); in acpi_video_bus_get_one_device()
1254 mutex_lock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1255 list_add_tail(&data->entry, &video->video_device_list); in acpi_video_bus_get_one_device()
1256 mutex_unlock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1263 * video : video bus device
1268 * Enumerate the video device list of the video bus,
1269 * bind the ids with the corresponding video devices
1270 * under the video bus.
1273 static void acpi_video_device_rebind(struct acpi_video_bus *video) in acpi_video_device_rebind() argument
1277 mutex_lock(&video->device_list_lock); in acpi_video_device_rebind()
1279 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_device_rebind()
1280 acpi_video_device_bind(video, dev); in acpi_video_device_rebind()
1282 mutex_unlock(&video->device_list_lock); in acpi_video_device_rebind()
1287 * video : video bus device
1288 * device : video output device under the video
1294 * Bind the ids with the corresponding video devices
1295 * under the video bus.
1299 acpi_video_device_bind(struct acpi_video_bus *video, in acpi_video_device_bind() argument
1305 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_bind()
1306 ids = &video->attached_array[i]; in acpi_video_device_bind()
1316 struct acpi_video_bus *video = device->video; in acpi_video_device_in_dod() local
1324 if (!video->attached_count || video->child_count > 8) in acpi_video_device_in_dod()
1327 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_in_dod()
1328 if ((video->attached_array[i].value.int_val & 0xfff) == in acpi_video_device_in_dod()
1338 * video : video bus device
1347 static int acpi_video_device_enumerate(struct acpi_video_bus *video) in acpi_video_device_enumerate() argument
1357 if (!video->cap._DOD) in acpi_video_device_enumerate()
1360 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); in acpi_video_device_enumerate()
1373 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", in acpi_video_device_enumerate()
1401 kfree(video->attached_array); in acpi_video_device_enumerate()
1403 video->attached_array = active_list; in acpi_video_device_enumerate()
1404 video->attached_count = count; in acpi_video_device_enumerate()
1494 struct acpi_video_bus *video; in acpi_video_get_edid() local
1503 video = acpi_driver_data(device); in acpi_video_get_edid()
1505 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_edid()
1506 video_device = video->attached_array[i].bind_info; in acpi_video_get_edid()
1560 acpi_video_bus_get_devices(struct acpi_video_bus *video, in acpi_video_bus_get_devices() argument
1567 * There are systems where video module known to work fine regardless in acpi_video_bus_get_devices()
1571 acpi_video_device_enumerate(video); in acpi_video_bus_get_devices()
1575 status = acpi_video_bus_get_one_device(dev, video); in acpi_video_bus_get_devices()
1580 video->child_count++; in acpi_video_bus_get_devices()
1591 static int acpi_video_bus_start_devices(struct acpi_video_bus *video) in acpi_video_bus_start_devices() argument
1593 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_start_devices()
1597 static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) in acpi_video_bus_stop_devices() argument
1599 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_stop_devices()
1605 struct acpi_video_bus *video = acpi_driver_data(device); in acpi_video_bus_notify() local
1609 if (!video || !video->input) in acpi_video_bus_notify()
1612 input = video->input; in acpi_video_bus_notify()
1620 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video in acpi_video_bus_notify()
1622 acpi_video_device_enumerate(video); in acpi_video_bus_notify()
1623 acpi_video_device_rebind(video); in acpi_video_bus_notify()
1679 bus = video_device->video; in acpi_video_device_notify()
1732 struct acpi_video_bus *video; in acpi_video_resume() local
1743 video = container_of(nb, struct acpi_video_bus, pm_nb); in acpi_video_resume()
1745 dev_info(&video->device->dev, "Restoring backlight state\n"); in acpi_video_resume()
1747 for (i = 0; i < video->attached_count; i++) { in acpi_video_resume()
1748 video_device = video->attached_array[i].bind_info; in acpi_video_resume()
1836 * register video output if cooling device registration failed? in acpi_video_dev_register_backlight()
1856 static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) in acpi_video_run_bcl_for_osi() argument
1861 mutex_lock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1862 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_run_bcl_for_osi()
1866 mutex_unlock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1872 * Do not create backlight device for video output in acpi_video_should_register_backlight()
1885 static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) in acpi_video_bus_register_backlight() argument
1889 if (video->backlight_registered) in acpi_video_bus_register_backlight()
1892 acpi_video_run_bcl_for_osi(video); in acpi_video_bus_register_backlight()
1897 mutex_lock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1898 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_bus_register_backlight()
1902 mutex_unlock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1904 video->backlight_registered = true; in acpi_video_bus_register_backlight()
1906 video->pm_nb.notifier_call = acpi_video_resume; in acpi_video_bus_register_backlight()
1907 video->pm_nb.priority = 0; in acpi_video_bus_register_backlight()
1908 return register_pm_notifier(&video->pm_nb); in acpi_video_bus_register_backlight()
1930 static int acpi_video_bus_unregister_backlight(struct acpi_video_bus *video) in acpi_video_bus_unregister_backlight() argument
1935 if (!video->backlight_registered) in acpi_video_bus_unregister_backlight()
1938 error = unregister_pm_notifier(&video->pm_nb); in acpi_video_bus_unregister_backlight()
1940 mutex_lock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1941 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_unregister_backlight()
1943 mutex_unlock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1945 video->backlight_registered = false; in acpi_video_bus_unregister_backlight()
1963 static int acpi_video_bus_add_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_add_notify_handler() argument
1969 video->input = input = input_allocate_device(); in acpi_video_bus_add_notify_handler()
1975 error = acpi_video_bus_start_devices(video); in acpi_video_bus_add_notify_handler()
1979 snprintf(video->phys, sizeof(video->phys), in acpi_video_bus_add_notify_handler()
1980 "%s/video/input0", acpi_device_hid(video->device)); in acpi_video_bus_add_notify_handler()
1982 input->name = acpi_device_name(video->device); in acpi_video_bus_add_notify_handler()
1983 input->phys = video->phys; in acpi_video_bus_add_notify_handler()
1986 input->dev.parent = &video->device->dev; in acpi_video_bus_add_notify_handler()
2001 mutex_lock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
2002 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_add_notify_handler()
2004 mutex_unlock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
2009 acpi_video_bus_stop_devices(video); in acpi_video_bus_add_notify_handler()
2012 video->input = NULL; in acpi_video_bus_add_notify_handler()
2026 static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_remove_notify_handler() argument
2030 mutex_lock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
2031 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_remove_notify_handler()
2033 mutex_unlock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
2035 acpi_video_bus_stop_devices(video); in acpi_video_bus_remove_notify_handler()
2036 input_unregister_device(video->input); in acpi_video_bus_remove_notify_handler()
2037 video->input = NULL; in acpi_video_bus_remove_notify_handler()
2040 static int acpi_video_bus_put_devices(struct acpi_video_bus *video) in acpi_video_bus_put_devices() argument
2044 mutex_lock(&video->device_list_lock); in acpi_video_bus_put_devices()
2045 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { in acpi_video_bus_put_devices()
2049 mutex_unlock(&video->device_list_lock); in acpi_video_bus_put_devices()
2058 struct acpi_video_bus *video; in acpi_video_bus_add() local
2068 "Duplicate ACPI video bus devices for the" in acpi_video_bus_add()
2070 "parameter \"video.allow_duplicates=1\"" in acpi_video_bus_add()
2076 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); in acpi_video_bus_add()
2077 if (!video) in acpi_video_bus_add()
2093 video->device = device; in acpi_video_bus_add()
2096 device->driver_data = video; in acpi_video_bus_add()
2098 acpi_video_bus_find_cap(video); in acpi_video_bus_add()
2099 error = acpi_video_bus_check(video); in acpi_video_bus_add()
2103 mutex_init(&video->device_list_lock); in acpi_video_bus_add()
2104 INIT_LIST_HEAD(&video->video_device_list); in acpi_video_bus_add()
2106 error = acpi_video_bus_get_devices(video, device); in acpi_video_bus_add()
2112 video->flags.multihead ? "yes" : "no", in acpi_video_bus_add()
2113 video->flags.rom ? "yes" : "no", in acpi_video_bus_add()
2114 video->flags.post ? "yes" : "no"); in acpi_video_bus_add()
2116 list_add_tail(&video->entry, &video_bus_head); in acpi_video_bus_add()
2119 acpi_video_bus_register_backlight(video); in acpi_video_bus_add()
2120 acpi_video_bus_add_notify_handler(video); in acpi_video_bus_add()
2125 acpi_video_bus_put_devices(video); in acpi_video_bus_add()
2126 kfree(video->attached_array); in acpi_video_bus_add()
2128 kfree(video); in acpi_video_bus_add()
2136 struct acpi_video_bus *video = NULL; in acpi_video_bus_remove() local
2142 video = acpi_driver_data(device); in acpi_video_bus_remove()
2144 acpi_video_bus_remove_notify_handler(video); in acpi_video_bus_remove()
2145 acpi_video_bus_unregister_backlight(video); in acpi_video_bus_remove()
2146 acpi_video_bus_put_devices(video); in acpi_video_bus_remove()
2149 list_del(&video->entry); in acpi_video_bus_remove()
2152 kfree(video->attached_array); in acpi_video_bus_remove()
2153 kfree(video); in acpi_video_bus_remove()
2274 struct acpi_video_bus *video; in acpi_video_unregister_backlight() local
2279 list_for_each_entry(video, &video_bus_head, entry) in acpi_video_unregister_backlight()
2280 acpi_video_bus_unregister_backlight(video); in acpi_video_unregister_backlight()
2301 * the video opregion code to be run first in order to initialise
2302 * state before any ACPI video calls are made. To handle this we defer
2303 * registration of the video class until the opregion code has run.