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1/* 2 * drivers/video/edid.h - EDID/DDC Header3 *4 * Based on:5 * 1. XFree86 4.3.0, edid.h6 * 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 Public14 * License. See the file COPYING in the main directory of this archive15 * for more details.16*/17 18#ifndef __EDID_H__19#define __EDID_H__20 21#define EDID_LENGTH 0x8022#define EDID_HEADER 0x0023#define EDID_HEADER_END 0x0724 25#define ID_MANUFACTURER_NAME 0x0826#define ID_MANUFACTURER_NAME_END 0x0927#define ID_MODEL 0x0a28 29#define ID_SERIAL_NUMBER 0x0c30 31#define MANUFACTURE_WEEK 0x1032#define MANUFACTURE_YEAR 0x1133 34#define EDID_STRUCT_VERSION 0x1235#define EDID_STRUCT_REVISION 0x1336 37#define EDID_STRUCT_DISPLAY 0x1438 39#define DPMS_FLAGS 0x1840#define ESTABLISHED_TIMING_1 0x2341#define ESTABLISHED_TIMING_2 0x2442#define MANUFACTURERS_TIMINGS 0x2543 44/* standard timings supported */45#define STD_TIMING 846#define STD_TIMING_DESCRIPTION_SIZE 247#define STD_TIMING_DESCRIPTIONS_START 0x2648 49#define DETAILED_TIMING_DESCRIPTIONS_START 0x3650#define DETAILED_TIMING_DESCRIPTION_SIZE 1851#define NO_DETAILED_TIMING_DESCRIPTIONS 452 53#define DETAILED_TIMING_DESCRIPTION_1 0x3654#define DETAILED_TIMING_DESCRIPTION_2 0x4855#define DETAILED_TIMING_DESCRIPTION_3 0x5a56#define DETAILED_TIMING_DESCRIPTION_4 0x6c57 58#define DESCRIPTOR_DATA 559 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__ */139