Merge branch 'agust@denx.de' of git://git.denx.de/u-boot-staging
[platform/kernel/u-boot.git] / drivers / video / display-uclass.c
1 /*
2  * Copyright 2014 Google Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <display.h>
10 #include <edid.h>
11 #include <errno.h>
12
13 int display_read_edid(struct udevice *dev, u8 *buf, int buf_size)
14 {
15         struct dm_display_ops *ops = display_get_ops(dev);
16
17         if (!ops || !ops->read_edid)
18                 return -ENOSYS;
19         return ops->read_edid(dev, buf, buf_size);
20 }
21
22 int display_enable(struct udevice *dev, int panel_bpp,
23                         const struct display_timing *timing)
24 {
25         struct dm_display_ops *ops = display_get_ops(dev);
26
27         if (!ops || !ops->enable)
28                 return -ENOSYS;
29         return ops->enable(dev, panel_bpp, timing);
30 }
31
32 int display_read_timing(struct udevice *dev, struct display_timing *timing)
33 {
34         struct dm_display_ops *ops = display_get_ops(dev);
35         int panel_bits_per_colour;
36         u8 buf[EDID_EXT_SIZE];
37         int ret;
38
39         if (!ops || !ops->read_edid)
40                 return -ENOSYS;
41         ret = ops->read_edid(dev, buf, sizeof(buf));
42         if (ret < 0)
43                 return ret;
44
45         return edid_get_timing(buf, ret, timing, &panel_bits_per_colour);
46 }
47
48 UCLASS_DRIVER(display) = {
49         .id             = UCLASS_DISPLAY,
50         .name           = "display",
51         .per_device_platdata_auto_alloc_size    = sizeof(struct display_plat),
52 };