| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2013 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #ifndef EDID_H |
| #define EDID_H |
| |
| /* structure for communicating EDID information from a raw EDID block to |
| * higher level functions. |
| * The size of the data types is not critical, so we leave them as |
| * unsigned int. We can move more into into this struct as needed. |
| */ |
| |
| struct edid { |
| char manuf_name[4]; |
| unsigned int model; |
| unsigned int serial; |
| unsigned int year; |
| unsigned int week; |
| unsigned int version[2]; |
| unsigned int nonconformant; |
| unsigned int type; |
| /* These next three things used to all be called bpp. |
| * Merriment ensued. The identifier |
| * 'bpp' is herewith banished from our |
| * Kingdom. |
| */ |
| /* How many bits in the framebuffer per pixel. |
| * Under all reasonable circumstances, it's 32. |
| */ |
| unsigned int framebuffer_bits_per_pixel; |
| /* On the panel, how many bits per color? |
| * In almost all cases, it's 6 or 8. |
| * The standard allows for much more! |
| */ |
| unsigned int panel_bits_per_color; |
| /* On the panel, how many bits per pixel. |
| * On Planet Earth, there are three colors |
| * per pixel, but this is convenient to have here |
| * instead of having 3*panel_bits_per_color |
| * all over the place. |
| */ |
| unsigned int panel_bits_per_pixel; |
| unsigned int xres; |
| unsigned int yres; |
| unsigned int voltage; |
| unsigned int sync; |
| unsigned int xsize_cm; |
| unsigned int ysize_cm; |
| /* used to compute timing for graphics chips. */ |
| unsigned char phsync; |
| unsigned char pvsync; |
| unsigned int x_mm; |
| unsigned int y_mm; |
| unsigned int pixel_clock; |
| unsigned int link_clock; |
| unsigned int ha; |
| unsigned int hbl; |
| unsigned int hso; |
| unsigned int hspw; |
| unsigned int hborder; |
| unsigned int va; |
| unsigned int vbl; |
| unsigned int vso; |
| unsigned int vspw; |
| unsigned int vborder; |
| /* 3 variables needed for coreboot framebuffer. |
| * In most cases, they are the same as the ha |
| * and va variables, but not always, as in the |
| * case of a 1366 wide display. |
| */ |
| u32 x_resolution; |
| u32 y_resolution; |
| u32 bytes_per_line; |
| /* it is unlikely we need these things. */ |
| /* if one of these is non-zero, use that one. */ |
| /* they're aspect * 10 to provide some additional resolution */ |
| unsigned int aspect_landscape; |
| unsigned int aspect_portrait; |
| const char *range_class; |
| const char *syncmethod; |
| const char *stereo; |
| }; |
| |
| /* Defined in src/lib/edid.c */ |
| int decode_edid(unsigned char *edid, int size, struct edid *out); |
| void set_vbe_mode_info_valid(struct edid *edid, uintptr_t fb_addr); |
| |
| #endif /* EDID_H */ |