| 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 <[email protected]>
|
| 7 | *
|
| 8 | * 2. John Fremlin <[email protected]> and
|
| 9 | * Ani Joshi <[email protected]>
|
| 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 |
|
| 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)
|
| 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
|