1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright 2014 Google Inc.
10 struct display_timing;
13 * Display uclass platform data for each device
15 * @source_id: ID for the source of the display data, typically a video
17 * @src_dev: Source device providing the video
18 * @in_use: Display is being used
22 struct udevice *src_dev;
27 * display_read_timing() - Read timing information
29 * @dev: Device to read from
30 * @return 0 if OK, -ve on error
32 int display_read_timing(struct udevice *dev, struct display_timing *timing);
35 * display_port_enable() - Enable a display port device
37 * @dev: Device to enable
38 * @panel_bpp: Number of bits per pixel for panel
39 * @timing: Display timings
40 * @return 0 if OK, -ve on error
42 int display_enable(struct udevice *dev, int panel_bpp,
43 const struct display_timing *timing);
46 * display_in_use() - Check if a display is in use by any device
48 * @return true if the device is in use (display_enable() has been called
49 * successfully), else false
51 bool display_in_use(struct udevice *dev);
53 struct dm_display_ops {
55 * read_timing() - Read information directly
57 * @dev: Device to read from
58 * @timing: Display timings
59 * @return 0 if OK, -ve on error
61 int (*read_timing)(struct udevice *dev, struct display_timing *timing);
64 * read_edid() - Read information from EDID
66 * @dev: Device to read from
67 * @buf: Buffer to read into (should be EDID_SIZE bytes)
68 * @buf_size: Buffer size (should be EDID_SIZE)
69 * @return number of bytes read, <=0 for error
71 int (*read_edid)(struct udevice *dev, u8 *buf, int buf_size);
74 * enable() - Enable the display port device
76 * @dev: Device to enable
77 * @panel_bpp: Number of bits per pixel for panel
78 * @timing: Display timings
79 * @return 0 if OK, -ve on error
81 int (*enable)(struct udevice *dev, int panel_bpp,
82 const struct display_timing *timing);
85 * mode_valid() - Check if mode is supported
87 * @dev: Device to enable
88 * @timing: Display timings
89 * @return true if supported, false if not
91 bool (*mode_valid)(struct udevice *dev,
92 const struct display_timing *timing);
95 #define display_get_ops(dev) ((struct dm_display_ops *)(dev)->driver->ops)