mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
1b68283b64
Mark a display as in use when display_enable() is called. This can avoid a display being used by multiple video-output devices. Signed-off-by: Simon Glass <sjg@chromium.org>
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/*
|
|
* Copyright 2014 Google Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <display.h>
|
|
#include <edid.h>
|
|
#include <errno.h>
|
|
|
|
int display_read_edid(struct udevice *dev, u8 *buf, int buf_size)
|
|
{
|
|
struct dm_display_ops *ops = display_get_ops(dev);
|
|
|
|
if (!ops || !ops->read_edid)
|
|
return -ENOSYS;
|
|
return ops->read_edid(dev, buf, buf_size);
|
|
}
|
|
|
|
int display_enable(struct udevice *dev, int panel_bpp,
|
|
const struct display_timing *timing)
|
|
{
|
|
struct dm_display_ops *ops = display_get_ops(dev);
|
|
struct display_plat *disp_uc_plat;
|
|
int ret;
|
|
|
|
if (!ops || !ops->enable)
|
|
return -ENOSYS;
|
|
ret = ops->enable(dev, panel_bpp, timing);
|
|
if (ret)
|
|
return ret;
|
|
|
|
disp_uc_plat = dev_get_uclass_platdata(dev);
|
|
disp_uc_plat->in_use = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int display_read_timing(struct udevice *dev, struct display_timing *timing)
|
|
{
|
|
struct dm_display_ops *ops = display_get_ops(dev);
|
|
int panel_bits_per_colour;
|
|
u8 buf[EDID_EXT_SIZE];
|
|
int ret;
|
|
|
|
if (ops && ops->read_timing)
|
|
return ops->read_timing(dev, timing);
|
|
|
|
if (!ops || !ops->read_edid)
|
|
return -ENOSYS;
|
|
ret = ops->read_edid(dev, buf, sizeof(buf));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return edid_get_timing(buf, ret, timing, &panel_bits_per_colour);
|
|
}
|
|
|
|
bool display_in_use(struct udevice *dev)
|
|
{
|
|
struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev);
|
|
|
|
return disp_uc_plat->in_use;
|
|
}
|
|
|
|
UCLASS_DRIVER(display) = {
|
|
.id = UCLASS_DISPLAY,
|
|
.name = "display",
|
|
.per_device_platdata_auto_alloc_size = sizeof(struct display_plat),
|
|
};
|