84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2014 Google Inc.
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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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struct display_plat *disp_uc_plat;
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int ret;
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if (!ops || !ops->enable)
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return -ENOSYS;
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ret = ops->enable(dev, panel_bpp, timing);
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if (ret)
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return ret;
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disp_uc_plat = dev_get_uclass_platdata(dev);
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disp_uc_plat->in_use = true;
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return 0;
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}
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static bool display_mode_valid(void *priv, const struct display_timing *timing)
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{
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struct udevice *dev = priv;
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struct dm_display_ops *ops = display_get_ops(dev);
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if (ops && ops->mode_valid)
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return ops->mode_valid(dev, timing);
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return true;
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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_timing)
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return ops->read_timing(dev, timing);
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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_validate(buf, ret, timing,
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&panel_bits_per_colour,
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display_mode_valid, dev);
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}
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bool display_in_use(struct udevice *dev)
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{
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struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev);
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return disp_uc_plat->in_use;
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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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