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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
139
