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
515 * Some machines have multiple video output devices, but only the one
517 * register backlight interface for other video output devices.
532 * events, in this case acpi-video is considered the canonical source
644 * ACPI video backlight still works w/ buggy _BQC. in acpi_video_device_lcd_get_level_current()
699 * video : video bus device pointer
723 acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) in acpi_video_bus_DOS() argument
727 if (!video->cap._DOS) in acpi_video_bus_DOS()
732 video->dos_setting = (lcd_flag << 2) | bios_flag; in acpi_video_bus_DOS()
733 status = acpi_execute_simple_method(video->device->handle, "_DOS", in acpi_video_bus_DOS()
941 * device : video output device (LCD, CRT, ..)
1015 * device : video output device (LCD, CRT, ..)
1045 * device : video output device (VGA)
1050 * Find out all required AML methods defined under the video bus device.
1053 static void acpi_video_bus_find_cap(struct acpi_video_bus *video) in acpi_video_bus_find_cap() argument
1055 if (acpi_has_method(video->device->handle, "_DOS")) in acpi_video_bus_find_cap()
1056 video->cap._DOS = 1; in acpi_video_bus_find_cap()
1057 if (acpi_has_method(video->device->handle, "_DOD")) in acpi_video_bus_find_cap()
1058 video->cap._DOD = 1; in acpi_video_bus_find_cap()
1059 if (acpi_has_method(video->device->handle, "_ROM")) in acpi_video_bus_find_cap()
1060 video->cap._ROM = 1; in acpi_video_bus_find_cap()
1061 if (acpi_has_method(video->device->handle, "_GPD")) in acpi_video_bus_find_cap()
1062 video->cap._GPD = 1; in acpi_video_bus_find_cap()
1063 if (acpi_has_method(video->device->handle, "_SPD")) in acpi_video_bus_find_cap()
1064 video->cap._SPD = 1; in acpi_video_bus_find_cap()
1065 if (acpi_has_method(video->device->handle, "_VPO")) in acpi_video_bus_find_cap()
1066 video->cap._VPO = 1; in acpi_video_bus_find_cap()
1070 * Check whether the video bus device has required AML method to
1074 static int acpi_video_bus_check(struct acpi_video_bus *video) in acpi_video_bus_check() argument
1079 if (!video) in acpi_video_bus_check()
1082 dev = acpi_get_pci_dev(video->device->handle); in acpi_video_bus_check()
1092 /* Does this device support video switching? */ in acpi_video_bus_check()
1093 if (video->cap._DOS || video->cap._DOD) { in acpi_video_bus_check()
1094 if (!video->cap._DOS) { in acpi_video_bus_check()
1097 acpi_device_bid(video->device)); in acpi_video_bus_check()
1099 video->flags.multihead = 1; in acpi_video_bus_check()
1103 /* Does this device support retrieving a video ROM? */ in acpi_video_bus_check()
1104 if (video->cap._ROM) { in acpi_video_bus_check()
1105 video->flags.rom = 1; in acpi_video_bus_check()
1109 /* Does this device support configuring which video device to POST? */ in acpi_video_bus_check()
1110 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { in acpi_video_bus_check()
1111 video->flags.post = 1; in acpi_video_bus_check()
1126 acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) in acpi_video_get_device_attr() argument
1131 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_attr()
1132 ids = &video->attached_array[i]; in acpi_video_get_device_attr()
1141 acpi_video_get_device_type(struct acpi_video_bus *video, in acpi_video_get_device_type() argument
1147 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_type()
1148 ids = &video->attached_array[i]; in acpi_video_get_device_type()
1158 struct acpi_video_bus *video) in acpi_video_bus_get_one_device() argument
1180 data->video = video; in acpi_video_bus_get_one_device()
1185 attribute = acpi_video_get_device_attr(video, device_id); in acpi_video_bus_get_one_device()
1209 device_type = acpi_video_get_device_type(video, device_id); in acpi_video_bus_get_one_device()
1226 acpi_video_device_bind(video, data); in acpi_video_bus_get_one_device()
1229 mutex_lock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1230 list_add_tail(&data->entry, &video->video_device_list); in acpi_video_bus_get_one_device()
1231 mutex_unlock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1238 * video : video bus device
1243 * Enumerate the video device list of the video bus,
1244 * bind the ids with the corresponding video devices
1245 * under the video bus.
1248 static void acpi_video_device_rebind(struct acpi_video_bus *video) in acpi_video_device_rebind() argument
1252 mutex_lock(&video->device_list_lock); in acpi_video_device_rebind()
1254 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_device_rebind()
1255 acpi_video_device_bind(video, dev); in acpi_video_device_rebind()
1257 mutex_unlock(&video->device_list_lock); in acpi_video_device_rebind()
1262 * video : video bus device
1263 * device : video output device under the video
1269 * Bind the ids with the corresponding video devices
1270 * under the video bus.
1274 acpi_video_device_bind(struct acpi_video_bus *video, in acpi_video_device_bind() argument
1280 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_bind()
1281 ids = &video->attached_array[i]; in acpi_video_device_bind()
1291 struct acpi_video_bus *video = device->video; in acpi_video_device_in_dod() local
1299 if (!video->attached_count || video->child_count > 8) in acpi_video_device_in_dod()
1302 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_in_dod()
1303 if ((video->attached_array[i].value.int_val & 0xfff) == in acpi_video_device_in_dod()
1313 * video : video bus device
1322 static int acpi_video_device_enumerate(struct acpi_video_bus *video) in acpi_video_device_enumerate() argument
1332 if (!video->cap._DOD) in acpi_video_device_enumerate()
1335 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); in acpi_video_device_enumerate()
1348 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", in acpi_video_device_enumerate()
1376 kfree(video->attached_array); in acpi_video_device_enumerate()
1378 video->attached_array = active_list; in acpi_video_device_enumerate()
1379 video->attached_count = count; in acpi_video_device_enumerate()
1469 struct acpi_video_bus *video; in acpi_video_get_edid() local
1478 video = acpi_driver_data(device); in acpi_video_get_edid()
1480 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_edid()
1481 video_device = video->attached_array[i].bind_info; in acpi_video_get_edid()
1535 acpi_video_bus_get_devices(struct acpi_video_bus *video, in acpi_video_bus_get_devices() argument
1542 * There are systems where video module known to work fine regardless in acpi_video_bus_get_devices()
1546 acpi_video_device_enumerate(video); in acpi_video_bus_get_devices()
1550 status = acpi_video_bus_get_one_device(dev, video); in acpi_video_bus_get_devices()
1555 video->child_count++; in acpi_video_bus_get_devices()
1566 static int acpi_video_bus_start_devices(struct acpi_video_bus *video) in acpi_video_bus_start_devices() argument
1568 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_start_devices()
1572 static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) in acpi_video_bus_stop_devices() argument
1574 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_stop_devices()
1580 struct acpi_video_bus *video = acpi_driver_data(device); in acpi_video_bus_notify() local
1584 if (!video || !video->input) in acpi_video_bus_notify()
1587 input = video->input; in acpi_video_bus_notify()
1595 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video in acpi_video_bus_notify()
1597 acpi_video_device_enumerate(video); in acpi_video_bus_notify()
1598 acpi_video_device_rebind(video); in acpi_video_bus_notify()
1654 bus = video_device->video; in acpi_video_device_notify()
1707 struct acpi_video_bus *video; in acpi_video_resume() local
1718 video = container_of(nb, struct acpi_video_bus, pm_nb); in acpi_video_resume()
1720 dev_info(&video->device->dev, "Restoring backlight state\n"); in acpi_video_resume()
1722 for (i = 0; i < video->attached_count; i++) { in acpi_video_resume()
1723 video_device = video->attached_array[i].bind_info; in acpi_video_resume()
1811 * register video output if cooling device registration failed? in acpi_video_dev_register_backlight()
1831 static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) in acpi_video_run_bcl_for_osi() argument
1836 mutex_lock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1837 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_run_bcl_for_osi()
1841 mutex_unlock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1847 * Do not create backlight device for video output in acpi_video_should_register_backlight()
1860 static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) in acpi_video_bus_register_backlight() argument
1864 if (video->backlight_registered) in acpi_video_bus_register_backlight()
1867 acpi_video_run_bcl_for_osi(video); in acpi_video_bus_register_backlight()
1872 mutex_lock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1873 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_bus_register_backlight()
1877 mutex_unlock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1879 video->backlight_registered = true; in acpi_video_bus_register_backlight()
1881 video->pm_nb.notifier_call = acpi_video_resume; in acpi_video_bus_register_backlight()
1882 video->pm_nb.priority = 0; in acpi_video_bus_register_backlight()
1883 return register_pm_notifier(&video->pm_nb); in acpi_video_bus_register_backlight()
1905 static int acpi_video_bus_unregister_backlight(struct acpi_video_bus *video) in acpi_video_bus_unregister_backlight() argument
1910 if (!video->backlight_registered) in acpi_video_bus_unregister_backlight()
1913 error = unregister_pm_notifier(&video->pm_nb); in acpi_video_bus_unregister_backlight()
1915 mutex_lock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1916 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_unregister_backlight()
1918 mutex_unlock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1920 video->backlight_registered = false; in acpi_video_bus_unregister_backlight()
1938 static int acpi_video_bus_add_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_add_notify_handler() argument
1944 video->input = input = input_allocate_device(); in acpi_video_bus_add_notify_handler()
1950 error = acpi_video_bus_start_devices(video); in acpi_video_bus_add_notify_handler()
1954 snprintf(video->phys, sizeof(video->phys), in acpi_video_bus_add_notify_handler()
1955 "%s/video/input0", acpi_device_hid(video->device)); in acpi_video_bus_add_notify_handler()
1957 input->name = acpi_device_name(video->device); in acpi_video_bus_add_notify_handler()
1958 input->phys = video->phys; in acpi_video_bus_add_notify_handler()
1961 input->dev.parent = &video->device->dev; in acpi_video_bus_add_notify_handler()
1976 mutex_lock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1977 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_add_notify_handler()
1979 mutex_unlock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1984 acpi_video_bus_stop_devices(video); in acpi_video_bus_add_notify_handler()
1987 video->input = NULL; in acpi_video_bus_add_notify_handler()
2001 static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_remove_notify_handler() argument
2005 mutex_lock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
2006 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_remove_notify_handler()
2008 mutex_unlock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
2010 acpi_video_bus_stop_devices(video); in acpi_video_bus_remove_notify_handler()
2011 input_unregister_device(video->input); in acpi_video_bus_remove_notify_handler()
2012 video->input = NULL; in acpi_video_bus_remove_notify_handler()
2015 static int acpi_video_bus_put_devices(struct acpi_video_bus *video) in acpi_video_bus_put_devices() argument
2019 mutex_lock(&video->device_list_lock); in acpi_video_bus_put_devices()
2020 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { in acpi_video_bus_put_devices()
2024 mutex_unlock(&video->device_list_lock); in acpi_video_bus_put_devices()
2033 struct acpi_video_bus *video; in acpi_video_bus_add() local
2043 "Duplicate ACPI video bus devices for the" in acpi_video_bus_add()
2045 "parameter \"video.allow_duplicates=1\"" in acpi_video_bus_add()
2051 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); in acpi_video_bus_add()
2052 if (!video) in acpi_video_bus_add()
2068 video->device = device; in acpi_video_bus_add()
2071 device->driver_data = video; in acpi_video_bus_add()
2073 acpi_video_bus_find_cap(video); in acpi_video_bus_add()
2074 error = acpi_video_bus_check(video); in acpi_video_bus_add()
2078 mutex_init(&video->device_list_lock); in acpi_video_bus_add()
2079 INIT_LIST_HEAD(&video->video_device_list); in acpi_video_bus_add()
2081 error = acpi_video_bus_get_devices(video, device); in acpi_video_bus_add()
2087 video->flags.multihead ? "yes" : "no", in acpi_video_bus_add()
2088 video->flags.rom ? "yes" : "no", in acpi_video_bus_add()
2089 video->flags.post ? "yes" : "no"); in acpi_video_bus_add()
2091 list_add_tail(&video->entry, &video_bus_head); in acpi_video_bus_add()
2094 acpi_video_bus_register_backlight(video); in acpi_video_bus_add()
2095 acpi_video_bus_add_notify_handler(video); in acpi_video_bus_add()
2100 acpi_video_bus_put_devices(video); in acpi_video_bus_add()
2101 kfree(video->attached_array); in acpi_video_bus_add()
2103 kfree(video); in acpi_video_bus_add()
2111 struct acpi_video_bus *video = NULL; in acpi_video_bus_remove() local
2117 video = acpi_driver_data(device); in acpi_video_bus_remove()
2119 acpi_video_bus_remove_notify_handler(video); in acpi_video_bus_remove()
2120 acpi_video_bus_unregister_backlight(video); in acpi_video_bus_remove()
2121 acpi_video_bus_put_devices(video); in acpi_video_bus_remove()
2124 list_del(&video->entry); in acpi_video_bus_remove()
2127 kfree(video->attached_array); in acpi_video_bus_remove()
2128 kfree(video); in acpi_video_bus_remove()
2249 struct acpi_video_bus *video; in acpi_video_unregister_backlight() local
2254 list_for_each_entry(video, &video_bus_head, entry) in acpi_video_unregister_backlight()
2255 acpi_video_bus_unregister_backlight(video); in acpi_video_unregister_backlight()
2276 * the video opregion code to be run first in order to initialise
2277 * state before any ACPI video calls are made. To handle this we defer
2278 * registration of the video class until the opregion code has run.