+static struct backlight_ops acpi_backlight_ops = {
+ .get_brightness = acpi_video_get_brightness,
+ .update_status = acpi_video_set_brightness,
+};
+
+/*video output device sysfs support*/
+static int acpi_video_output_get(struct output_device *od)
+{
+ unsigned long long state;
+ struct acpi_video_device *vd =
+ (struct acpi_video_device *)dev_get_drvdata(&od->dev);
+ acpi_video_device_get_state(vd, &state);
+ return (int)state;
+}
+
+static int acpi_video_output_set(struct output_device *od)
+{
+ unsigned long state = od->request_state;
+ struct acpi_video_device *vd=
+ (struct acpi_video_device *)dev_get_drvdata(&od->dev);
+ return acpi_video_device_set_state(vd, state);
+}
+
+static struct output_properties acpi_output_properties = {
+ .set_state = acpi_video_output_set,
+ .get_status = acpi_video_output_get,
+};
+
+
+/* thermal cooling device callbacks */
+static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+{
+ struct acpi_device *device = cdev->devdata;
+ struct acpi_video_device *video = acpi_driver_data(device);
+
+ return sprintf(buf, "%d\n", video->brightness->count - 3);
+}
+
+static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+{
+ struct acpi_device *device = cdev->devdata;
+ struct acpi_video_device *video = acpi_driver_data(device);
+ unsigned long long level;
+ int state;
+
+ acpi_video_device_lcd_get_level_current(video, &level);
+ for (state = 2; state < video->brightness->count; state++)
+ if (level == video->brightness->levels[state])
+ return sprintf(buf, "%d\n",
+ video->brightness->count - state - 1);
+
+ return -EINVAL;
+}
+
+static int
+video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+{
+ struct acpi_device *device = cdev->devdata;
+ struct acpi_video_device *video = acpi_driver_data(device);
+ int level;
+
+ if ( state >= video->brightness->count - 2)
+ return -EINVAL;
+
+ state = video->brightness->count - state;
+ level = video->brightness->levels[state -1];
+ return acpi_video_device_lcd_set_level(video, level);
+}
+
+static struct thermal_cooling_device_ops video_cooling_ops = {
+ .get_max_state = video_get_max_state,
+ .get_cur_state = video_get_cur_state,
+ .set_cur_state = video_set_cur_state,
+};
+