90 static int acpi_video_bus_add(struct acpi_device *device);
91 static int acpi_video_bus_remove(struct acpi_device *device);
92 static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
151 	struct acpi_device *device;  member
224 				   struct acpi_video_device *device);
226 static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
229 			struct acpi_video_device *device,
231 static int acpi_video_get_next_level(struct acpi_video_device *device,
274 	struct acpi_device *device = cooling_dev->devdata;  in video_get_max_state()  local
275 	struct acpi_video_device *video = acpi_driver_data(device);  in video_get_max_state()
284 	struct acpi_device *device = cooling_dev->devdata;  in video_get_cur_state()  local
285 	struct acpi_video_device *video = acpi_driver_data(device);  in video_get_cur_state()
303 	struct acpi_device *device = cooling_dev->devdata;  in video_set_cur_state()  local
304 	struct acpi_video_device *video = acpi_driver_data(device);  in video_set_cur_state()
328 acpi_video_device_lcd_query_levels(struct acpi_video_device *device,  in acpi_video_device_lcd_query_levels()  argument
338 	status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer);  in acpi_video_device_lcd_query_levels()
359 acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)  in acpi_video_device_lcd_set_level()  argument
364 	status = acpi_execute_simple_method(device->dev->handle,  in acpi_video_device_lcd_set_level()
371 	device->brightness->curr = level;  in acpi_video_device_lcd_set_level()
372 	for (state = 2; state < device->brightness->count; state++)  in acpi_video_device_lcd_set_level()
373 		if (level == device->brightness->levels[state]) {  in acpi_video_device_lcd_set_level()
374 			if (device->backlight)  in acpi_video_device_lcd_set_level()
375 				device->backlight->props.brightness = state - 2;  in acpi_video_device_lcd_set_level()
525 acpi_video_bqc_value_to_level(struct acpi_video_device *device,  in acpi_video_bqc_value_to_level()  argument
530 	if (device->brightness->flags._BQC_use_index) {  in acpi_video_bqc_value_to_level()
536 		if (device->brightness->flags._BCL_reversed)  in acpi_video_bqc_value_to_level()
537 			bqc_value = device->brightness->count - 3 - bqc_value;  in acpi_video_bqc_value_to_level()
539 		level = device->brightness->levels[bqc_value + 2];  in acpi_video_bqc_value_to_level()
550 acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,  in acpi_video_device_lcd_get_level_current()  argument
556 	if (device->cap._BQC || device->cap._BCQ) {  in acpi_video_device_lcd_get_level_current()
557 		char *buf = device->cap._BQC ? "_BQC" : "_BCQ";  in acpi_video_device_lcd_get_level_current()
559 		status = acpi_evaluate_integer(device->dev->handle, buf,  in acpi_video_device_lcd_get_level_current()
571 			*level = acpi_video_bqc_value_to_level(device, *level);  in acpi_video_device_lcd_get_level_current()
573 			for (i = 2; i < device->brightness->count; i++)  in acpi_video_device_lcd_get_level_current()
574 				if (device->brightness->levels[i] == *level) {  in acpi_video_device_lcd_get_level_current()
575 					device->brightness->curr = *level;  in acpi_video_device_lcd_get_level_current()
585 			device->cap._BQC = device->cap._BCQ = 0;  in acpi_video_device_lcd_get_level_current()
596 			device->cap._BQC = device->cap._BCQ = 0;  in acpi_video_device_lcd_get_level_current()
600 	*level = device->brightness->curr;  in acpi_video_device_lcd_get_level_current()
605 acpi_video_device_EDID(struct acpi_video_device *device,  in acpi_video_device_EDID()  argument
617 	if (!device)  in acpi_video_device_EDID()
626 	status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer);  in acpi_video_device_EDID()
677 	status = acpi_execute_simple_method(video->device->handle, "_DOS",  in acpi_video_bus_DOS()
702 static int acpi_video_bqc_quirk(struct acpi_video_device *device,  in acpi_video_bqc_quirk()  argument
705 	struct acpi_video_device_brightness *br = device->brightness;  in acpi_video_bqc_quirk()
720 	result = acpi_video_device_lcd_set_level(device, test_level);  in acpi_video_bqc_quirk()
724 	result = acpi_video_device_lcd_get_level_current(device, &level, true);  in acpi_video_bqc_quirk()
738 			device->cap._BQC = device->cap._BCQ = 0;  in acpi_video_bqc_quirk()
756 acpi_video_init_brightness(struct acpi_video_device *device)  in acpi_video_init_brightness()  argument
766 	if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) {  in acpi_video_init_brightness()
839 	device->brightness = br;  in acpi_video_init_brightness()
844 	if (!device->cap._BQC)  in acpi_video_init_brightness()
847 	result = acpi_video_device_lcd_get_level_current(device,  in acpi_video_init_brightness()
852 	result = acpi_video_bqc_quirk(device, max_level, level_old);  in acpi_video_init_brightness()
859 	if (!device->cap._BQC)  in acpi_video_init_brightness()
862 	level = acpi_video_bqc_value_to_level(device, level_old);  in acpi_video_init_brightness()
876 	result = acpi_video_device_lcd_set_level(device, level);  in acpi_video_init_brightness()
890 	device->brightness = NULL;  in acpi_video_init_brightness()
906 static void acpi_video_device_find_cap(struct acpi_video_device *device)  in acpi_video_device_find_cap()  argument
908 	if (acpi_has_method(device->dev->handle, "_ADR"))  in acpi_video_device_find_cap()
909 		device->cap._ADR = 1;  in acpi_video_device_find_cap()
910 	if (acpi_has_method(device->dev->handle, "_BCL"))  in acpi_video_device_find_cap()
911 		device->cap._BCL = 1;  in acpi_video_device_find_cap()
912 	if (acpi_has_method(device->dev->handle, "_BCM"))  in acpi_video_device_find_cap()
913 		device->cap._BCM = 1;  in acpi_video_device_find_cap()
914 	if (acpi_has_method(device->dev->handle, "_BQC")) {  in acpi_video_device_find_cap()
915 		device->cap._BQC = 1;  in acpi_video_device_find_cap()
916 	} else if (acpi_has_method(device->dev->handle, "_BCQ")) {  in acpi_video_device_find_cap()
918 		device->cap._BCQ = 1;  in acpi_video_device_find_cap()
921 	if (acpi_has_method(device->dev->handle, "_DDC"))  in acpi_video_device_find_cap()
922 		device->cap._DDC = 1;  in acpi_video_device_find_cap()
937 	if (acpi_has_method(video->device->handle, "_DOS"))  in acpi_video_bus_find_cap()
939 	if (acpi_has_method(video->device->handle, "_DOD"))  in acpi_video_bus_find_cap()
941 	if (acpi_has_method(video->device->handle, "_ROM"))  in acpi_video_bus_find_cap()
943 	if (acpi_has_method(video->device->handle, "_GPD"))  in acpi_video_bus_find_cap()
945 	if (acpi_has_method(video->device->handle, "_SPD"))  in acpi_video_bus_find_cap()
947 	if (acpi_has_method(video->device->handle, "_VPO"))  in acpi_video_bus_find_cap()
964 	dev = acpi_get_pci_dev(video->device->handle);  in acpi_video_bus_check()
979 				acpi_device_bid(video->device));  in acpi_video_bus_check()
1039 acpi_video_bus_get_one_device(struct acpi_device *device,  in acpi_video_bus_get_one_device()  argument
1048 	    acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);  in acpi_video_bus_get_one_device()
1057 	strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);  in acpi_video_bus_get_one_device()
1058 	strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);  in acpi_video_bus_get_one_device()
1059 	device->driver_data = data;  in acpi_video_bus_get_one_device()
1063 	data->dev = device;  in acpi_video_bus_get_one_device()
1157 		       struct acpi_video_device *device)  in acpi_video_device_bind()  argument
1164 		if (device->device_id == (ids->value.int_val & 0xffff)) {  in acpi_video_device_bind()
1165 			ids->bind_info = device;  in acpi_video_device_bind()
1171 static bool acpi_video_device_in_dod(struct acpi_video_device *device)  in acpi_video_device_in_dod()  argument
1173 	struct acpi_video_bus *video = device->video;  in acpi_video_device_in_dod()
1186 		    (device->device_id & 0xfff))  in acpi_video_device_in_dod()
1214 	status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer);  in acpi_video_device_enumerate()
1266 acpi_video_get_next_level(struct acpi_video_device *device,  in acpi_video_get_next_level()  argument
1273 	for (i = 2; i < device->brightness->count; i++) {  in acpi_video_get_next_level()
1274 		l = device->brightness->levels[i];  in acpi_video_get_next_level()
1283 	for (i = 2; i < device->brightness->count; i++) {  in acpi_video_get_next_level()
1284 		l = device->brightness->levels[i];  in acpi_video_get_next_level()
1313 	struct acpi_video_device *device = container_of(to_delayed_work(work),  in acpi_video_switch_brightness()  local
1316 	int event = device->switch_brightness_event;  in acpi_video_switch_brightness()
1320 	if (!device->backlight)  in acpi_video_switch_brightness()
1323 	if (!device->brightness)  in acpi_video_switch_brightness()
1326 	result = acpi_video_device_lcd_get_level_current(device,  in acpi_video_switch_brightness()
1332 	level_next = acpi_video_get_next_level(device, level_current, event);  in acpi_video_switch_brightness()
1334 	result = acpi_video_device_lcd_set_level(device, level_next);  in acpi_video_switch_brightness()
1337 		backlight_force_update(device->backlight,  in acpi_video_switch_brightness()
1345 int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,  in acpi_video_get_edid()  argument
1354 	if (!device || !acpi_driver_data(device))  in acpi_video_get_edid()
1357 	video = acpi_driver_data(device);  in acpi_video_get_edid()
1415 			   struct acpi_device *device)  in acpi_video_bus_get_devices()  argument
1427 	list_for_each_entry(dev, &device->children, node) {  in acpi_video_bus_get_devices()
1457 static void acpi_video_bus_notify(struct acpi_device *device, u32 event)  in acpi_video_bus_notify()  argument
1459 	struct acpi_video_bus *video = acpi_driver_data(device);  in acpi_video_bus_notify()
1497 	if (acpi_notifier_call_chain(device, event, 0))  in acpi_video_bus_notify()
1524 	struct acpi_device *device = NULL;  in acpi_video_device_notify()  local
1532 	device = video_device->dev;  in acpi_video_device_notify()
1563 	acpi_notifier_call_chain(device, event, 0);  in acpi_video_device_notify()
1591 	dev_info(&video->device->dev, "Restoring backlight state\n");  in acpi_video_resume()
1607 	struct acpi_device *device = context;  in acpi_video_bus_match()  local
1611 	if (handle == device->handle)  in acpi_video_bus_match()
1624 static void acpi_video_dev_register_backlight(struct acpi_video_device *device)  in acpi_video_dev_register_backlight()  argument
1629 	struct device *parent = NULL;  in acpi_video_dev_register_backlight()
1634 	result = acpi_video_init_brightness(device);  in acpi_video_dev_register_backlight()
1646 	acpi_get_parent(device->dev->handle, &acpi_parent);  in acpi_video_dev_register_backlight()
1656 	props.max_brightness = device->brightness->count - 3;  in acpi_video_dev_register_backlight()
1657 	device->backlight = backlight_device_register(name,  in acpi_video_dev_register_backlight()
1659 						      device,  in acpi_video_dev_register_backlight()
1663 	if (IS_ERR(device->backlight)) {  in acpi_video_dev_register_backlight()
1664 		device->backlight = NULL;  in acpi_video_dev_register_backlight()
1672 	device->backlight->props.brightness =  in acpi_video_dev_register_backlight()
1673 			acpi_video_get_brightness(device->backlight);  in acpi_video_dev_register_backlight()
1675 	device->cooling_dev = thermal_cooling_device_register("LCD",  in acpi_video_dev_register_backlight()
1676 				device->dev, &video_cooling_ops);  in acpi_video_dev_register_backlight()
1677 	if (IS_ERR(device->cooling_dev)) {  in acpi_video_dev_register_backlight()
1684 		device->cooling_dev = NULL;  in acpi_video_dev_register_backlight()
1688 	dev_info(&device->dev->dev, "registered as cooling_device%d\n",  in acpi_video_dev_register_backlight()
1689 		 device->cooling_dev->id);  in acpi_video_dev_register_backlight()
1690 	result = sysfs_create_link(&device->dev->dev.kobj,  in acpi_video_dev_register_backlight()
1691 			&device->cooling_dev->device.kobj,  in acpi_video_dev_register_backlight()
1695 	result = sysfs_create_link(&device->cooling_dev->device.kobj,  in acpi_video_dev_register_backlight()
1696 			&device->dev->dev.kobj, "device");  in acpi_video_dev_register_backlight()
1756 static void acpi_video_dev_unregister_backlight(struct acpi_video_device *device)  in acpi_video_dev_unregister_backlight()  argument
1758 	if (device->backlight) {  in acpi_video_dev_unregister_backlight()
1759 		backlight_device_unregister(device->backlight);  in acpi_video_dev_unregister_backlight()
1760 		device->backlight = NULL;  in acpi_video_dev_unregister_backlight()
1762 	if (device->brightness) {  in acpi_video_dev_unregister_backlight()
1763 		kfree(device->brightness->levels);  in acpi_video_dev_unregister_backlight()
1764 		kfree(device->brightness);  in acpi_video_dev_unregister_backlight()
1765 		device->brightness = NULL;  in acpi_video_dev_unregister_backlight()
1767 	if (device->cooling_dev) {  in acpi_video_dev_unregister_backlight()
1768 		sysfs_remove_link(&device->dev->dev.kobj, "thermal_cooling");  in acpi_video_dev_unregister_backlight()
1769 		sysfs_remove_link(&device->cooling_dev->device.kobj, "device");  in acpi_video_dev_unregister_backlight()
1770 		thermal_cooling_device_unregister(device->cooling_dev);  in acpi_video_dev_unregister_backlight()
1771 		device->cooling_dev = NULL;  in acpi_video_dev_unregister_backlight()
1795 static void acpi_video_dev_add_notify_handler(struct acpi_video_device *device)  in acpi_video_dev_add_notify_handler()  argument
1798 	struct acpi_device *adev = device->dev;  in acpi_video_dev_add_notify_handler()
1801 					     acpi_video_device_notify, device);  in acpi_video_dev_add_notify_handler()
1805 		device->flags.notify = 1;  in acpi_video_dev_add_notify_handler()
1825 			"%s/video/input0", acpi_device_hid(video->device));  in acpi_video_bus_add_notify_handler()
1827 	input->name = acpi_device_name(video->device);  in acpi_video_bus_add_notify_handler()
1831 	input->dev.parent = &video->device->dev;  in acpi_video_bus_add_notify_handler()
1901 static int acpi_video_bus_add(struct acpi_device *device)  in acpi_video_bus_add()  argument
1908 				device->parent->handle, 1,  in acpi_video_bus_add()
1910 				device, NULL);  in acpi_video_bus_add()
1926 	if (!strcmp(device->pnp.bus_id, "VID")) {  in acpi_video_bus_add()
1928 			device->pnp.bus_id[3] = '0' + instance;  in acpi_video_bus_add()
1932 	if (!strcmp(device->pnp.bus_id, "VGA")) {  in acpi_video_bus_add()
1934 			device->pnp.bus_id[3] = '0' + instance;  in acpi_video_bus_add()
1938 	video->device = device;  in acpi_video_bus_add()
1939 	strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);  in acpi_video_bus_add()
1940 	strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);  in acpi_video_bus_add()
1941 	device->driver_data = video;  in acpi_video_bus_add()
1951 	error = acpi_video_bus_get_devices(video, device);  in acpi_video_bus_add()
1956 	       ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),  in acpi_video_bus_add()
1974 	device->driver_data = NULL;  in acpi_video_bus_add()
1979 static int acpi_video_bus_remove(struct acpi_device *device)  in acpi_video_bus_remove()  argument
1984 	if (!device || !acpi_driver_data(device))  in acpi_video_bus_remove()
1987 	video = acpi_driver_data(device);  in acpi_video_bus_remove()
2005 	if (dev->device == 0x00D1)  in is_i740()
2007 	if (dev->device == 0x7000)  in is_i740()