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https://github.com/brain-hackers/u-boot-brain
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2dcf143398
The current DisplayPort uclass is too specific. The operations it provides are shared with other types of output devices, such as HDMI and LVDS LCD displays. Generalise the uclass so that it can be used with these devices as well. Adjust the uclass to handle the EDID reading and conversion to display_timing internally. Also update nyan-big which is affected by this. Signed-off-by: Simon Glass <sjg@chromium.org>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright 2014 Google Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <display.h>
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#include <edid.h>
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#include <errno.h>
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int display_read_edid(struct udevice *dev, u8 *buf, int buf_size)
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{
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struct dm_display_ops *ops = display_get_ops(dev);
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if (!ops || !ops->read_edid)
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return -ENOSYS;
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return ops->read_edid(dev, buf, buf_size);
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}
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int display_enable(struct udevice *dev, int panel_bpp,
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const struct display_timing *timing)
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{
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struct dm_display_ops *ops = display_get_ops(dev);
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if (!ops || !ops->enable)
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return -ENOSYS;
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return ops->enable(dev, panel_bpp, timing);
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}
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int display_read_timing(struct udevice *dev, struct display_timing *timing)
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{
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struct dm_display_ops *ops = display_get_ops(dev);
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int panel_bits_per_colour;
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u8 buf[EDID_EXT_SIZE];
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int ret;
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if (!ops || !ops->read_edid)
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return -ENOSYS;
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ret = ops->read_edid(dev, buf, sizeof(buf));
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if (ret < 0)
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return ret;
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return edid_get_timing(buf, ret, timing, &panel_bits_per_colour);
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}
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UCLASS_DRIVER(display) = {
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.id = UCLASS_DISPLAY,
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.name = "display",
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.per_device_platdata_auto_alloc_size = sizeof(struct display_plat),
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};
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