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Diffstat (limited to 'include/display.h')
-rw-r--r-- | include/display.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/display.h b/include/display.h new file mode 100644 index 0000000..6629461 --- /dev/null +++ b/include/display.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2014 Google Inc. + */ + +#ifndef _DISPLAY_H +#define _DISPLAY_H + +struct udevice; +struct display_timing; + +/** + * Display uclass platform data for each device + * + * @source_id: ID for the source of the display data, typically a video + * controller + * @src_dev: Source device providing the video + * @in_use: Display is being used + */ +struct display_plat { + int source_id; + struct udevice *src_dev; + bool in_use; +}; + +/** + * display_read_timing() - Read timing information + * + * @dev: Device to read from + * @return 0 if OK, -ve on error + */ +int display_read_timing(struct udevice *dev, struct display_timing *timing); + +/** + * display_port_enable() - Enable a display port device + * + * @dev: Device to enable + * @panel_bpp: Number of bits per pixel for panel + * @timing: Display timings + * @return 0 if OK, -ve on error + */ +int display_enable(struct udevice *dev, int panel_bpp, + const struct display_timing *timing); + +/** + * display_in_use() - Check if a display is in use by any device + * + * @return true if the device is in use (display_enable() has been called + * successfully), else false + */ +bool display_in_use(struct udevice *dev); + +struct dm_display_ops { + /** + * read_timing() - Read information directly + * + * @dev: Device to read from + * @timing: Display timings + * @return 0 if OK, -ve on error + */ + int (*read_timing)(struct udevice *dev, struct display_timing *timing); + + /** + * read_edid() - Read information from EDID + * + * @dev: Device to read from + * @buf: Buffer to read into (should be EDID_SIZE bytes) + * @buf_size: Buffer size (should be EDID_SIZE) + * @return number of bytes read, <=0 for error + */ + int (*read_edid)(struct udevice *dev, u8 *buf, int buf_size); + + /** + * enable() - Enable the display port device + * + * @dev: Device to enable + * @panel_bpp: Number of bits per pixel for panel + * @timing: Display timings + * @return 0 if OK, -ve on error + */ + int (*enable)(struct udevice *dev, int panel_bpp, + const struct display_timing *timing); + + /** + * mode_valid() - Check if mode is supported + * + * @dev: Device to enable + * @timing: Display timings + * @return true if supported, false if not + */ + bool (*mode_valid)(struct udevice *dev, + const struct display_timing *timing); +}; + +#define display_get_ops(dev) ((struct dm_display_ops *)(dev)->driver->ops) + +#endif |