4 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the License);
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 #ifndef __HW_DISPLAY_H__
21 #define __HW_DISPLAY_H__
23 #include <hw/common.h>
26 * The id of this device
28 #define DISPLAY_HARDWARE_DEVICE_ID "display"
31 * The version of this device
33 #define DISPLAY_HARDWARE_DEVICE_VERSION MAKE_VERSION(0,1)
36 DISPLAY_ON, /* In use */
37 DISPLAY_STANDBY, /* Blanked, low power */
38 DISPLAY_SUSPEND, /* Blanked, lower power */
39 DISPLAY_OFF, /* Shut off, awaiting activity */
42 struct display_device {
43 struct hw_common common;
45 /* The brightness value is 0 to 100. */
46 int (*get_brightness)(int *brightness);
47 int (*set_brightness)(int brightness);
49 /* Control display state */
50 int (*get_state)(enum display_state *state);
51 int (*set_state)(enum display_state state);