edid.h (4753B)
1/* 2 * drivers/video/edid.h - EDID/DDC Header 3 * 4 * Based on: 5 * 1. XFree86 4.3.0, edid.h 6 * Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE> 7 * 8 * 2. John Fremlin <vii@users.sourceforge.net> and 9 * Ani Joshi <ajoshi@unixbox.com> 10 * 11 * DDC is a Trademark of VESA (Video Electronics Standard Association). 12 * 13 * This file is subject to the terms and conditions of the GNU General Public 14 * License. See the file COPYING in the main directory of this archive 15 * for more details. 16*/ 17 18#ifndef __EDID_H__ 19#define __EDID_H__ 20 21#define EDID_LENGTH 0x80 22#define EDID_HEADER 0x00 23#define EDID_HEADER_END 0x07 24 25#define ID_MANUFACTURER_NAME 0x08 26#define ID_MANUFACTURER_NAME_END 0x09 27#define ID_MODEL 0x0a 28 29#define ID_SERIAL_NUMBER 0x0c 30 31#define MANUFACTURE_WEEK 0x10 32#define MANUFACTURE_YEAR 0x11 33 34#define EDID_STRUCT_VERSION 0x12 35#define EDID_STRUCT_REVISION 0x13 36 37#define EDID_STRUCT_DISPLAY 0x14 38 39#define DPMS_FLAGS 0x18 40#define ESTABLISHED_TIMING_1 0x23 41#define ESTABLISHED_TIMING_2 0x24 42#define MANUFACTURERS_TIMINGS 0x25 43 44/* standard timings supported */ 45#define STD_TIMING 8 46#define STD_TIMING_DESCRIPTION_SIZE 2 47#define STD_TIMING_DESCRIPTIONS_START 0x26 48 49#define DETAILED_TIMING_DESCRIPTIONS_START 0x36 50#define DETAILED_TIMING_DESCRIPTION_SIZE 18 51#define NO_DETAILED_TIMING_DESCRIPTIONS 4 52 53#define DETAILED_TIMING_DESCRIPTION_1 0x36 54#define DETAILED_TIMING_DESCRIPTION_2 0x48 55#define DETAILED_TIMING_DESCRIPTION_3 0x5a 56#define DETAILED_TIMING_DESCRIPTION_4 0x6c 57 58#define DESCRIPTOR_DATA 5 59 60#define UPPER_NIBBLE( x ) \ 61 (((128|64|32|16) & (x)) >> 4) 62 63#define LOWER_NIBBLE( x ) \ 64 ((1|2|4|8) & (x)) 65 66#define COMBINE_HI_8LO( hi, lo ) \ 67 ( (((unsigned)hi) << 8) | (unsigned)lo ) 68 69#define COMBINE_HI_4LO( hi, lo ) \ 70 ( (((unsigned)hi) << 4) | (unsigned)lo ) 71 72#define PIXEL_CLOCK_LO (unsigned)block[ 0 ] 73#define PIXEL_CLOCK_HI (unsigned)block[ 1 ] 74#define PIXEL_CLOCK (COMBINE_HI_8LO( PIXEL_CLOCK_HI,PIXEL_CLOCK_LO )*10000) 75#define H_ACTIVE_LO (unsigned)block[ 2 ] 76#define H_BLANKING_LO (unsigned)block[ 3 ] 77#define H_ACTIVE_HI UPPER_NIBBLE( (unsigned)block[ 4 ] ) 78#define H_ACTIVE COMBINE_HI_8LO( H_ACTIVE_HI, H_ACTIVE_LO ) 79#define H_BLANKING_HI LOWER_NIBBLE( (unsigned)block[ 4 ] ) 80#define H_BLANKING COMBINE_HI_8LO( H_BLANKING_HI, H_BLANKING_LO ) 81 82#define V_ACTIVE_LO (unsigned)block[ 5 ] 83#define V_BLANKING_LO (unsigned)block[ 6 ] 84#define V_ACTIVE_HI UPPER_NIBBLE( (unsigned)block[ 7 ] ) 85#define V_ACTIVE COMBINE_HI_8LO( V_ACTIVE_HI, V_ACTIVE_LO ) 86#define V_BLANKING_HI LOWER_NIBBLE( (unsigned)block[ 7 ] ) 87#define V_BLANKING COMBINE_HI_8LO( V_BLANKING_HI, V_BLANKING_LO ) 88 89#define H_SYNC_OFFSET_LO (unsigned)block[ 8 ] 90#define H_SYNC_WIDTH_LO (unsigned)block[ 9 ] 91 92#define V_SYNC_OFFSET_LO UPPER_NIBBLE( (unsigned)block[ 10 ] ) 93#define V_SYNC_WIDTH_LO LOWER_NIBBLE( (unsigned)block[ 10 ] ) 94 95#define V_SYNC_WIDTH_HI ((unsigned)block[ 11 ] & (1|2)) 96#define V_SYNC_OFFSET_HI (((unsigned)block[ 11 ] & (4|8)) >> 2) 97 98#define H_SYNC_WIDTH_HI (((unsigned)block[ 11 ] & (16|32)) >> 4) 99#define H_SYNC_OFFSET_HI (((unsigned)block[ 11 ] & (64|128)) >> 6) 100 101#define V_SYNC_WIDTH COMBINE_HI_4LO( V_SYNC_WIDTH_HI, V_SYNC_WIDTH_LO ) 102#define V_SYNC_OFFSET COMBINE_HI_4LO( V_SYNC_OFFSET_HI, V_SYNC_OFFSET_LO ) 103 104#define H_SYNC_WIDTH COMBINE_HI_8LO( H_SYNC_WIDTH_HI, H_SYNC_WIDTH_LO ) 105#define H_SYNC_OFFSET COMBINE_HI_8LO( H_SYNC_OFFSET_HI, H_SYNC_OFFSET_LO ) 106 107#define H_SIZE_LO (unsigned)block[ 12 ] 108#define V_SIZE_LO (unsigned)block[ 13 ] 109 110#define H_SIZE_HI UPPER_NIBBLE( (unsigned)block[ 14 ] ) 111#define V_SIZE_HI LOWER_NIBBLE( (unsigned)block[ 14 ] ) 112 113#define H_SIZE COMBINE_HI_8LO( H_SIZE_HI, H_SIZE_LO ) 114#define V_SIZE COMBINE_HI_8LO( V_SIZE_HI, V_SIZE_LO ) 115 116#define H_BORDER (unsigned)block[ 15 ] 117#define V_BORDER (unsigned)block[ 16 ] 118 119#define FLAGS (unsigned)block[ 17 ] 120 121#define INTERLACED (FLAGS&128) 122#define SYNC_TYPE (FLAGS&3<<3) /* bits 4,3 */ 123#define SYNC_SEPARATE (3<<3) 124#define HSYNC_POSITIVE (FLAGS & 4) 125#define VSYNC_POSITIVE (FLAGS & 2) 126 127#define V_MIN_RATE block[ 5 ] 128#define V_MAX_RATE block[ 6 ] 129#define H_MIN_RATE block[ 7 ] 130#define H_MAX_RATE block[ 8 ] 131#define MAX_PIXEL_CLOCK (((int)block[ 9 ]) * 10) 132#define GTF_SUPPORT block[10] 133 134#define DPMS_ACTIVE_OFF (1 << 5) 135#define DPMS_SUSPEND (1 << 6) 136#define DPMS_STANDBY (1 << 7) 137 138#endif /* __EDID_H__ */