display-uclass.c
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/*
* 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),
};