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51f2c99e14
eDP (Embedded DisplayPort) is a standard widely used in laptops to drive LCD panels. Add a uclass for this which supports a few simple operations. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
61 lines
1.5 KiB
C
61 lines
1.5 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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#ifndef _DISPLAYPORT_H
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#define _DISPLAYPORT_H
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struct udevice;
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struct display_timing;
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/**
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* display_port_read_edid() - Read information from EDID
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*
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* @dev: Device to read from
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* @buf: Buffer to read into (should be EDID_SIZE bytes)
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* @buf_size: Buffer size (should be EDID_SIZE)
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* @return number of bytes read, <=0 for error
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*/
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int display_port_read_edid(struct udevice *dev, u8 *buf, int buf_size);
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/**
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* display_port_enable() - Enable a display port device
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*
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* @dev: Device to enable
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* @panel_bpp: Number of bits per pixel for panel
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* @timing: Display timings
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* @return 0 if OK, -ve on error
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*/
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int display_port_enable(struct udevice *dev, int panel_bpp,
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const struct display_timing *timing);
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struct dm_display_port_ops {
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/**
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* read_edid() - Read information from EDID
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*
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* @dev: Device to read from
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* @buf: Buffer to read into (should be EDID_SIZE bytes)
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* @buf_size: Buffer size (should be EDID_SIZE)
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* @return number of bytes read, <=0 for error
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*/
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int (*read_edid)(struct udevice *dev, u8 *buf, int buf_size);
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/**
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* enable() - Enable the display port device
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*
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* @dev: Device to enable
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* @panel_bpp: Number of bits per pixel for panel
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* @timing: Display timings
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* @return 0 if OK, -ve on error
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*/
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int (*enable)(struct udevice *dev, int panel_bpp,
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const struct display_timing *timing);
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};
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#define display_port_get_ops(dev) \
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((struct dm_display_port_ops *)(dev)->driver->ops)
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#endif
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