6673e8ec6a
When debugging usually we want to print out a full identifier for panel, that should be manufacturer and part number. Previously the edid only contains ascii_string (which is usually the part number) but we should export manufacturer name as well. Change-Id: I0020fdd5b9f9331b25825876e0de4dc7e26b0464 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34852 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2013 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef EDID_H
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#define EDID_H
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#include <stdint.h>
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#include "commonlib/coreboot_tables.h"
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enum edid_modes {
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EDID_MODE_640x480_60Hz,
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EDID_MODE_720x480_60Hz,
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EDID_MODE_1280x720_60Hz,
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EDID_MODE_1920x1080_60Hz,
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NUM_KNOWN_MODES,
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EDID_MODE_AUTO
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};
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struct edid_mode {
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const char *name;
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unsigned int pixel_clock;
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int lvds_dual_channel;
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unsigned int refresh;
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unsigned int ha;
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unsigned int hbl;
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unsigned int hso;
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unsigned int hspw;
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unsigned int hborder;
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unsigned int va;
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unsigned int vbl;
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unsigned int vso;
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unsigned int vspw;
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unsigned int vborder;
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unsigned char phsync;
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unsigned char pvsync;
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unsigned int x_mm;
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unsigned int y_mm;
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};
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/* structure for communicating EDID information from a raw EDID block to
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* higher level functions.
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* The size of the data types is not critical, so we leave them as
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* unsigned int. We can move more into into this struct as needed.
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*/
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#define EDID_ASCII_STRING_LENGTH 13
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struct edid {
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/* These next three things used to all be called bpp.
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* Merriment ensued. The identifier
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* 'bpp' is herewith banished from our
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* Kingdom.
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*/
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/* How many bits in the framebuffer per pixel.
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* Under all reasonable circumstances, it's 32.
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*/
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unsigned int framebuffer_bits_per_pixel;
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/* On the panel, how many bits per color?
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* In almost all cases, it's 6 or 8.
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* The standard allows for much more!
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*/
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unsigned int panel_bits_per_color;
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/* On the panel, how many bits per pixel.
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* On Planet Earth, there are three colors
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* per pixel, but this is convenient to have here
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* instead of having 3*panel_bits_per_color
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* all over the place.
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*/
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unsigned int panel_bits_per_pixel;
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/* used to compute timing for graphics chips. */
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struct edid_mode mode;
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u8 mode_is_supported[NUM_KNOWN_MODES];
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unsigned int link_clock;
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/* 3 variables needed for coreboot framebuffer.
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* In most cases, they are the same as the ha
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* and va variables, but not always, as in the
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* case of a 1366 wide display.
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*/
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u32 x_resolution;
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u32 y_resolution;
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u32 bytes_per_line;
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int hdmi_monitor_detected;
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char ascii_string[EDID_ASCII_STRING_LENGTH + 1];
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char manufacturer_name[3 + 1];
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};
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enum edid_status {
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EDID_CONFORMANT,
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EDID_NOT_CONFORMANT,
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EDID_ABSENT,
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};
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/* Defined in src/lib/edid.c */
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int decode_edid(unsigned char *edid, int size, struct edid *out);
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void edid_set_framebuffer_bits_per_pixel(struct edid *edid, int fb_bpp,
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int row_byte_alignment);
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void set_vbe_mode_info_valid(const struct edid *edid, uintptr_t fb_addr);
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void set_vbe_framebuffer_orientation(enum lb_fb_orientation orientation);
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int set_display_mode(struct edid *edid, enum edid_modes mode);
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#endif /* EDID_H */
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