1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2014 Google Inc.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <dm.h>
9*4882a593Smuzhiyun #include <display.h>
10*4882a593Smuzhiyun #include <edid.h>
11*4882a593Smuzhiyun #include <errno.h>
12*4882a593Smuzhiyun
display_read_edid(struct udevice * dev,u8 * buf,int buf_size)13*4882a593Smuzhiyun int display_read_edid(struct udevice *dev, u8 *buf, int buf_size)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun struct dm_display_ops *ops = display_get_ops(dev);
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun if (!ops || !ops->read_edid)
18*4882a593Smuzhiyun return -ENOSYS;
19*4882a593Smuzhiyun return ops->read_edid(dev, buf, buf_size);
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
display_enable(struct udevice * dev,int panel_bpp,const struct display_timing * timing)22*4882a593Smuzhiyun int display_enable(struct udevice *dev, int panel_bpp,
23*4882a593Smuzhiyun const struct display_timing *timing)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun struct dm_display_ops *ops = display_get_ops(dev);
26*4882a593Smuzhiyun struct display_plat *disp_uc_plat;
27*4882a593Smuzhiyun int ret;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun if (!ops || !ops->enable)
30*4882a593Smuzhiyun return -ENOSYS;
31*4882a593Smuzhiyun ret = ops->enable(dev, panel_bpp, timing);
32*4882a593Smuzhiyun if (ret)
33*4882a593Smuzhiyun return ret;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun disp_uc_plat = dev_get_uclass_platdata(dev);
36*4882a593Smuzhiyun disp_uc_plat->in_use = true;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun return 0;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
display_read_timing(struct udevice * dev,struct display_timing * timing)41*4882a593Smuzhiyun int display_read_timing(struct udevice *dev, struct display_timing *timing)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun struct dm_display_ops *ops = display_get_ops(dev);
44*4882a593Smuzhiyun int panel_bits_per_colour;
45*4882a593Smuzhiyun u8 buf[EDID_EXT_SIZE];
46*4882a593Smuzhiyun int ret;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun if (ops && ops->read_timing)
49*4882a593Smuzhiyun return ops->read_timing(dev, timing);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun if (!ops || !ops->read_edid)
52*4882a593Smuzhiyun return -ENOSYS;
53*4882a593Smuzhiyun ret = ops->read_edid(dev, buf, sizeof(buf));
54*4882a593Smuzhiyun if (ret < 0)
55*4882a593Smuzhiyun return ret;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun return edid_get_timing(buf, ret, timing, &panel_bits_per_colour);
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
display_in_use(struct udevice * dev)60*4882a593Smuzhiyun bool display_in_use(struct udevice *dev)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev);
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun return disp_uc_plat->in_use;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun UCLASS_DRIVER(display) = {
68*4882a593Smuzhiyun .id = UCLASS_DISPLAY,
69*4882a593Smuzhiyun .name = "display",
70*4882a593Smuzhiyun .per_device_platdata_auto_alloc_size = sizeof(struct display_plat),
71*4882a593Smuzhiyun };
72