blob: b1c476628b4f9aa0cb882e435f0535a681a92df3 [file] [log] [blame]
Simon Glass2dcf1432016-01-21 19:45:00 -07001/*
2 * Copyright 2014 Google Inc.
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#ifndef _DISPLAY_H
8#define _DISPLAY_H
9
10struct udevice;
11struct display_timing;
12
13/**
14 * Display uclass platform data for each device
15 *
16 * @source_id: ID for the source of the display data, typically a video
17 * controller
18 * @src_dev: Source device providing the video
19 */
20struct display_plat {
21 int source_id;
22 struct udevice *src_dev;
23};
24
25/**
Jacob Cheneab314f2016-03-14 11:20:14 +080026 * display_read_timing() - Read timing information
Simon Glass2dcf1432016-01-21 19:45:00 -070027 *
28 * @dev: Device to read from
29 * @return 0 if OK, -ve on error
30 */
31int display_read_timing(struct udevice *dev, struct display_timing *timing);
32
33/**
34 * display_port_enable() - Enable a display port device
35 *
36 * @dev: Device to enable
37 * @panel_bpp: Number of bits per pixel for panel
38 * @timing: Display timings
39 * @return 0 if OK, -ve on error
40 */
41int display_enable(struct udevice *dev, int panel_bpp,
42 const struct display_timing *timing);
43
44struct dm_display_ops {
45 /**
Jacob Cheneab314f2016-03-14 11:20:14 +080046 * read_timing() - Read information directly
47 *
48 * @dev: Device to read from
49 * @timing: Display timings
50 * @return 0 if OK, -ve on error
51 */
52 int (*read_timing)(struct udevice *dev, struct display_timing *timing);
53
54 /**
Simon Glass2dcf1432016-01-21 19:45:00 -070055 * read_edid() - Read information from EDID
56 *
57 * @dev: Device to read from
58 * @buf: Buffer to read into (should be EDID_SIZE bytes)
59 * @buf_size: Buffer size (should be EDID_SIZE)
60 * @return number of bytes read, <=0 for error
61 */
62 int (*read_edid)(struct udevice *dev, u8 *buf, int buf_size);
63
64 /**
65 * enable() - Enable the display port device
66 *
67 * @dev: Device to enable
68 * @panel_bpp: Number of bits per pixel for panel
69 * @timing: Display timings
70 * @return 0 if OK, -ve on error
71 */
72 int (*enable)(struct udevice *dev, int panel_bpp,
73 const struct display_timing *timing);
74};
75
76#define display_get_ops(dev) ((struct dm_display_ops *)(dev)->driver->ops)
77
78#endif