mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/* 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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#ifndef _DISPLAY_H
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#define _DISPLAY_H
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struct udevice;
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struct display_timing;
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/**
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* Display uclass platform data for each device
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*
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* @source_id: ID for the source of the display data, typically a video
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* controller
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* @src_dev: Source device providing the video
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* @in_use: Display is being used
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*/
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struct display_plat {
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int source_id;
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struct udevice *src_dev;
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bool in_use;
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};
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/**
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* display_read_timing() - Read timing information
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*
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* @dev: Device to read from
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* @return 0 if OK, -ve on error
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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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* 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_enable(struct udevice *dev, int panel_bpp,
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const struct display_timing *timing);
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/**
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* display_in_use() - Check if a display is in use by any device
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*
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* @return true if the device is in use (display_enable() has been called
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* successfully), else false
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*/
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bool display_in_use(struct udevice *dev);
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struct dm_display_ops {
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/**
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* read_timing() - Read information directly
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*
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* @dev: Device to read from
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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 (*read_timing)(struct udevice *dev, struct display_timing *timing);
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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_get_ops(dev) ((struct dm_display_ops *)(dev)->driver->ops)
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#endif
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