From 51f2c99e14b28b65b7f66a5cd392fa49c03537aa Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 14 Apr 2015 21:03:38 -0600 Subject: dm: video: Add a uclass for display port 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 Acked-by: Anatolij Gustschin Signed-off-by: Tom Warren --- include/displayport.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 include/displayport.h (limited to 'include/displayport.h') diff --git a/include/displayport.h b/include/displayport.h new file mode 100644 index 0000000000..f7c7e25285 --- /dev/null +++ b/include/displayport.h @@ -0,0 +1,60 @@ +/* + * Copyright 2014 Google Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _DISPLAYPORT_H +#define _DISPLAYPORT_H + +struct udevice; +struct display_timing; + +/** + * display_port_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 display_port_read_edid(struct udevice *dev, u8 *buf, int buf_size); + +/** + * 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_port_enable(struct udevice *dev, int panel_bpp, + const struct display_timing *timing); + +struct dm_display_port_ops { + /** + * 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); +}; + +#define display_port_get_ops(dev) \ + ((struct dm_display_port_ops *)(dev)->driver->ops) + +#endif -- cgit v1.2.1