105 lines
3.1 KiB
C
105 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef EDID_H
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#define EDID_H
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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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struct edid {
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char manuf_name[4];
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unsigned int model;
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unsigned int serial;
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unsigned int year;
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unsigned int week;
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unsigned int version[2];
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unsigned int nonconformant;
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unsigned int type;
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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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unsigned int xres;
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unsigned int yres;
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unsigned int voltage;
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unsigned int sync;
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unsigned int xsize_cm;
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unsigned int ysize_cm;
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/* used to compute timing for graphics chips. */
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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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unsigned int pixel_clock;
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unsigned int link_clock;
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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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/* 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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/* it is unlikely we need these things. */
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/* if one of these is non-zero, use that one. */
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/* they're aspect * 10 to provide some additional resolution */
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unsigned int aspect_landscape;
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unsigned int aspect_portrait;
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const char *range_class;
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const char *syncmethod;
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const char *stereo;
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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 set_vbe_mode_info_valid(struct edid *edid, uintptr_t fb_addr);
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#endif /* EDID_H */
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