/* edid.h: defines to parse an EDID block * * This file contains all information to interpret a standard EDIC block * transmitted by a display device via DDC (Display Data Channel). So far * there is no information to deal with optional EDID blocks. * DDC is a Trademark of VESA (Video Electronics Standard Association). * * Copyright 1998 by Egbert Eich */ #ifndef _EDID_H_ #define _EDID_H_ /* read complete EDID record */ #define EDID1_LEN 128 #define BITS_PER_BYTE 9 #define NUM BITS_PER_BYTE*EDID1_LEN #define HEADER 6 #define STD_TIMINGS 8 #define DET_TIMINGS 4 #ifdef _PARSE_EDID_ /* header: 0x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x00 */ #define HEADER_SECTION 0 #define HEADER_LENGTH 8 /* vendor section */ #define VENDOR_SECTION (HEADER_SECTION + HEADER_LENGTH) #define V_MANUFACTURER 0 #define V_PROD_ID (V_MANUFACTURER + 2) #define V_SERIAL (V_PROD_ID + 2) #define V_WEEK (V_SERIAL + 4) #define V_YEAR (V_WEEK + 1) #define VENDOR_LENGTH (V_YEAR + 1) /* EDID version */ #define VERSION_SECTION (VENDOR_SECTION + VENDOR_LENGTH) #define V_VERSION 0 #define V_REVISION (V_VERSION + 1) #define VERSION_LENGTH (V_REVISION + 1) /* display information */ #define DISPLAY_SECTION (VERSION_SECTION + VERSION_LENGTH) #define D_INPUT 0 #define D_HSIZE (D_INPUT + 1) #define D_VSIZE (D_HSIZE + 1) #define D_GAMMA (D_VSIZE + 1) #define FEAT_S (D_GAMMA + 1) #define D_RG_LOW (FEAT_S + 1) #define D_BW_LOW (D_RG_LOW + 1) #define D_REDX (D_BW_LOW + 1) #define D_REDY (D_REDX + 1) #define D_GREENX (D_REDY + 1) #define D_GREENY (D_GREENX + 1) #define D_BLUEX (D_GREENY + 1) #define D_BLUEY (D_BLUEX + 1) #define D_WHITEX (D_BLUEY + 1) #define D_WHITEY (D_WHITEX + 1) #define DISPLAY_LENGTH (D_WHITEY + 1) /* supported VESA and other standard timings */ #define ESTABLISHED_TIMING_SECTION (DISPLAY_SECTION + DISPLAY_LENGTH) #define E_T1 0 #define E_T2 (E_T1 + 1) #define E_TMANU (E_T2 + 1) #define E_TIMING_LENGTH (E_TMANU + 1) /* non predefined standard timings supported by display */ #define STD_TIMING_SECTION (ESTABLISHED_TIMING_SECTION + E_TIMING_LENGTH) #define STD_TIMING_INFO_LEN 2 #define STD_TIMING_INFO_NUM STD_TIMINGS #define STD_TIMING_LENGTH (STD_TIMING_INFO_LEN * STD_TIMING_INFO_NUM) /* detailed timing info of non standard timings */ #define DET_TIMING_SECTION (STD_TIMING_SECTION + STD_TIMING_LENGTH) #define DET_TIMING_INFO_LEN 18 #define MONITOR_DESC_LEN DET_TIMING_INFO_LEN #define DET_TIMING_INFO_NUM DET_TIMINGS #define DET_TIMING_LENGTH (DET_TIMING_INFO_LEN * DET_TIMING_INFO_NUM) /* number of EDID sections to follow */ #define NO_EDID (DET_TIMING_SECTION + DET_TIMING_LENGTH) /* one byte checksum */ #define CHECKSUM (NO_EDID + 1) #if (CHECKSUM != (EDID1_LEN - 1)) # error "EDID1 length != 128!" #endif #define SECTION(x,y) (Uchar *)(x + y) #define GET_ARRAY(y) ((Uchar *)(c + y)) #define GET(y) *(Uchar *)(c + y) /* extract information from vendor section */ #define _PROD_ID(x) x[0] + (x[1] << 8); #define PROD_ID _PROD_ID(GET_ARRAY(V_PROD_ID)) #define _SERIAL_NO(x) x[0] + (x[1] << 8) + (x[2] << 16) + (x[3] << 24) #define SERIAL_NO _SERIAL_NO(GET_ARRAY(V_SERIAL)) #define _YEAR(x) (x & 0xFF) + 1990 #define YEAR _YEAR(GET(V_YEAR)) #define WEEK GET(V_WEEK) & 0xFF #define _L1(x) ((x[0] & 0x7C) >> 2) + '@' #define _L2(x) ((x[0] & 0x03) << 3) + ((x[1] & 0xE0) >> 5) + '@' #define _L3(x) (x[1] & 0x1F) + '@'; #define L1 _L1(GET_ARRAY(V_MANUFACTURER)) #define L2 _L2(GET_ARRAY(V_MANUFACTURER)) #define L3 _L3(GET_ARRAY(V_MANUFACTURER)) /* extract information from version section */ #define VERSION GET(V_VERSION) #define REVISION GET(V_REVISION) /* extract information from display section */ #define _INPUT_TYPE(x) ((x & 0x80) >> 7) #define INPUT_TYPE _INPUT_TYPE(GET(D_INPUT)) #define _INPUT_VOLTAGE(x) ((x & 0x60) >> 5) #define INPUT_VOLTAGE _INPUT_VOLTAGE(GET(D_INPUT)) #define _SETUP(x) ((x & 0x10) >> 4) #define SETUP _SETUP(GET(D_INPUT)) #define _SYNC(x) (x & 0x0F) #define SYNC _SYNC(GET(D_INPUT)) #define _DFP(x) (x & 0x01) #define DFP _DFP(GET(D_INPUT)) #define _GAMMA(x) (x == 0xff ? 1.0 : ((x + 100.0)/100.0)) #define GAMMA _GAMMA(GET(D_GAMMA)) #define HSIZE_MAX GET(D_HSIZE) #define VSIZE_MAX GET(D_VSIZE) #define _DPMS(x) ((x & 0xE0) >> 5) #define DPMS _DPMS(GET(FEAT_S)) #define _DISPLAY_TYPE(x) ((x & 0x18) >> 3) #define DISPLAY_TYPE _DISPLAY_TYPE(GET(FEAT_S)) #define _MSC(x) (x & 0x7) #define MSC _MSC(GET(FEAT_S)) /* color characteristics */ #define CC_L(x,y) ((x & (0x03 << y)) >> y) #define CC_H(x) (x << 2) #define I_CC(x,y,z) CC_H(y) | CC_L(x,z) #define F_CC(x) ((x)/1024.0) #define REDX F_CC(I_CC((GET(D_RG_LOW)),(GET(D_REDX)),6)) #define REDY F_CC(I_CC((GET(D_RG_LOW)),(GET(D_REDY)),4)) #define GREENX F_CC(I_CC((GET(D_RG_LOW)),(GET(D_GREENX)),2)) #define GREENY F_CC(I_CC((GET(D_RG_LOW)),(GET(D_GREENY)),0)) #define BLUEX F_CC(I_CC((GET(D_BW_LOW)),(GET(D_BLUEX)),6)) #define BLUEY F_CC(I_CC((GET(D_BW_LOW)),(GET(D_BLUEY)),4)) #define WHITEX F_CC(I_CC((GET(D_BW_LOW)),(GET(D_WHITEX)),2)) #define WHITEY F_CC(I_CC((GET(D_BW_LOW)),(GET(D_WHITEY)),0)) /* extract information from standard timing section */ #define T1 GET(E_T1) #define T2 GET(E_T2) #define T_MANU GET(E_TMANU) /* extract information from estabished timing section */ #define _VALID_TIMING(x) !(((x[0] == 0x01) && (x[1] == 0x01)) \ || ((x[0] == 0x00) && (x[1] == 0x00)) \ || ((x[0] == 0x20) && (x[1] == 0x20)) ) #define VALID_TIMING _VALID_TIMING(c) #define _HSIZE1(x) ((x[0] + 31) * 8) #define HSIZE1 _HSIZE1(c) #define RATIO(x) ((x[1] & 0xC0) >> 6) #define RATIO1_1 0 /* EDID Ver. 1.3 redefined this */ #define RATIO16_10 RATIO1_1 #define RATIO4_3 1 #define RATIO5_4 2 #define RATIO16_9 3 #define _VSIZE1(x,y,r) switch(RATIO(x)){ \ case RATIO1_1: y = ((v->version > 1 || v->revision > 2) \ ? (_HSIZE1(x) * 10) / 16 : _HSIZE1(x)); break; \ case RATIO4_3: y = _HSIZE1(x) * 3 / 4; break; \ case RATIO5_4: y = _HSIZE1(x) * 4 / 5; break; \ case RATIO16_9: y = _HSIZE1(x) * 9 / 16; break; \ } #define VSIZE1(x) _VSIZE1(c,x,v) #define _REFRESH_R(x) (x[1] & 0x3F) + 60 #define REFRESH_R _REFRESH_R(c) #define _ID_LOW(x) x[0] #define ID_LOW _ID_LOW(c) #define _ID_HIGH(x) (x[1] << 8) #define ID_HIGH _ID_HIGH(c) #define STD_TIMING_ID (ID_LOW | ID_HIGH) #define _NEXT_STD_TIMING(x) (x = (x + STD_TIMING_INFO_LEN)) #define NEXT_STD_TIMING _NEXT_STD_TIMING(c) /* EDID Ver. >= 1.2 */ #define _IS_MONITOR_DESC(x) (x[0] == 0 && x[1] == 0 && x[2] == 0 && x[4] == 0) #define IS_MONITOR_DESC _IS_MONITOR_DESC(c) #define _PIXEL_CLOCK(x) (x[0] + (x[1] << 8)) * 10000 #define PIXEL_CLOCK _PIXEL_CLOCK(c) #define _H_ACTIVE(x) (x[2] + ((x[4] & 0xF0) << 4)) #define H_ACTIVE _H_ACTIVE(c) #define _H_BLANK(x) (x[3] + ((x[4] & 0x0F) << 8)) #define H_BLANK _H_BLANK(c) #define _V_ACTIVE(x) (x[5] + ((x[7] & 0xF0) << 4)) #define V_ACTIVE _V_ACTIVE(c) #define _V_BLANK(x) (x[6] + ((x[7] & 0x0F) << 8)) #define V_BLANK _V_BLANK(c) #define _H_SYNC_OFF(x) (x[8] + ((x[11] & 0xC0) << 2)) #define H_SYNC_OFF _H_SYNC_OFF(c) #define _H_SYNC_WIDTH(x) (x[9] + ((x[11] & 0x30) << 4)) #define H_SYNC_WIDTH _H_SYNC_WIDTH(c) #define _V_SYNC_OFF(x) ((x[10] >> 4) + ((x[11] & 0x0C) << 2)) #define V_SYNC_OFF _V_SYNC_OFF(c) #define _V_SYNC_WIDTH(x) ((x[10] & 0x0F) + ((x[11] & 0x03) << 4)) #define V_SYNC_WIDTH _V_SYNC_WIDTH(c) #define _H_SIZE(x) (x[12] + ((x[14] & 0xF0) << 4)) #define H_SIZE _H_SIZE(c) #define _V_SIZE(x) (x[13] + ((x[14] & 0x0F) << 8)) #define V_SIZE _V_SIZE(c) #define _H_BORDER(x) (x[15]) #define H_BORDER _H_BORDER(c) #define _V_BORDER(x) (x[16]) #define V_BORDER _V_BORDER(c) #define _INTERLACED(x) ((x[17] & 0x80) >> 7) #define INTERLACED _INTERLACED(c) #define _STEREO(x) ((x[17] & 0x60) >> 5) #define STEREO _STEREO(c) #define _STEREO1(x) (x[17] & 0x1) #define STEREO1 _STEREO(c) #define _SYNC_T(x) ((x[17] & 0x18) >> 3) #define SYNC_T _SYNC_T(c) #define _MISC(x) ((x[17] & 0x06) >> 1) #define MISC _MISC(c) #define _MONITOR_DESC_TYPE(x) x[3] #define MONITOR_DESC_TYPE _MONITOR_DESC_TYPE(c) #define SERIAL_NUMBER 0xFF #define ASCII_STR 0xFE #define MONITOR_RANGES 0xFD #define _MIN_V(x) x[5] #define MIN_V _MIN_V(c) #define _MAX_V(x) x[6] #define MAX_V _MAX_V(c) #define _MIN_H(x) x[7] #define MIN_H _MIN_H(c) #define _MAX_H(x) x[8] #define MAX_H _MAX_H(c) #define _MAX_CLOCK(x) x[9] #define MAX_CLOCK _MAX_CLOCK(c) #define _HAVE_2ND_GTF(x) (x[10] == 0x02) #define HAVE_2ND_GTF _HAVE_2ND_GTF(c) #define _F_2ND_GTF(x) (x[12] * 2) #define F_2ND_GTF _F_2ND_GTF(c) #define _C_2ND_GTF(x) (x[13] / 2) #define C_2ND_GTF _C_2ND_GTF(c) #define _M_2ND_GTF(x) (x[14] + (x[15] << 8)) #define M_2ND_GTF _M_2ND_GTF(c) #define _K_2ND_GTF(x) (x[16]) #define K_2ND_GTF _K_2ND_GTF(c) #define _J_2ND_GTF(x) (x[17] / 2) #define J_2ND_GTF _J_2ND_GTF(c) #define MONITOR_NAME 0xFC #define ADD_COLOR_POINT 0xFB #define WHITEX F_CC(I_CC((GET(D_BW_LOW)),(GET(D_WHITEX)),2)) #define WHITEY F_CC(I_CC((GET(D_BW_LOW)),(GET(D_WHITEY)),0)) #define _WHITEX_ADD(x,y) F_CC(I_CC(((*(x + y))),(*(x + y + 1)),2)) #define _WHITEY_ADD(x,y) F_CC(I_CC(((*(x + y))),(*(x + y + 2)),0)) #define _WHITE_INDEX1(x) x[5] #define WHITE_INDEX1 _WHITE_INDEX1(c) #define _WHITE_INDEX2(x) x[10] #define WHITE_INDEX2 _WHITE_INDEX2(c) #define WHITEX1 _WHITEX_ADD(c,6) #define WHITEY1 _WHITEY_ADD(c,6) #define WHITEX2 _WHITEX_ADD(c,12) #define WHITEY2 _WHITEY_ADD(c,12) #define _WHITE_GAMMA1(x) _GAMMA(x[9]) #define WHITE_GAMMA1 _WHITE_GAMMA1(c) #define _WHITE_GAMMA2(x) _GAMMA(x[14]) #define WHITE_GAMMA2 _WHITE_GAMMA2(c) #define ADD_STD_TIMINGS 0xFA #define ADD_DUMMY 0x10 #define _NEXT_DT_MD_SECTION(x) (x = (x + DET_TIMING_INFO_LEN)) #define NEXT_DT_MD_SECTION _NEXT_DT_MD_SECTION(c) #endif /* _PARSE_EDID_ */ /* input type */ #define DIGITAL(x) x /* DFP */ #define DFP1(x) x /* input voltage level */ #define V070 0 /* 0.700V/0.300V */ #define V071 1 /* 0.714V/0.286V */ #define V100 2 /* 1.000V/0.400V */ #define V007 3 /* 0.700V/0.000V */ /* Signal level setup */ #define SIG_SETUP(x) (x) /* sync characteristics */ #define SEP_SYNC(x) (x & 0x08) #define COMP_SYNC(x) (x & 0x04) #define SYNC_O_GREEN(x) (x & 0x02) #define SYNC_SERR(x) (x & 0x01) /* DPMS features */ #define DPMS_STANDBY(x) (x & 0x04) #define DPMS_SUSPEND(x) (x & 0x02) #define DPMS_OFF(x) (x & 0x01) /* display type */ #define DISP_MONO 0 #define DISP_RGB 1 #define DISP_MULTCOLOR 2 /* Msc stuff EDID Ver > 1.1 */ #define STD_COLOR_SPACE(x) (x & 0x4) #define PREFERRED_TIMING_MODE(x) (x & 0x2) #define GFT_SUPPORTED(x) (x & 0x1) /* detailed timing misc */ #define IS_INTERLACED(x) (x) #define IS_STEREO(x) (x) #define IS_RIGHT_STEREO(x) (x & 0x01) #define IS_LEFT_STEREO(x) (x & 0x02) #define IS_4WAY_STEREO(x) (x & 0x03) #define IS_RIGHT_ON_SYNC(x) IS_RIGHT_STEREO(x) #define IS_LEFT_ON_SYNC(x) IS_LEFT_STEREO(x) typedef unsigned int Uint; typedef unsigned char Uchar; struct vendor { char name[4]; int prod_id; Uint serial; int week; int year; }; struct edid_version { int version; int revision; }; struct disp_features { unsigned int input_type:1; unsigned int input_voltage:2; unsigned int input_setup:1; unsigned int input_sync:5; unsigned int input_dfp:1; int hsize; int vsize; float gamma; unsigned int dpms:3; unsigned int display_type:2; unsigned int msc:3; float redx; float redy; float greenx; float greeny; float bluex; float bluey; float whitex; float whitey; }; struct established_timings { Uchar t1; Uchar t2; Uchar t_manu; }; struct std_timings { int hsize; int vsize; int refresh; CARD16 id; }; struct detailed_timings { int clock; int h_active; int h_blanking; int v_active; int v_blanking; int h_sync_off; int h_sync_width; int v_sync_off; int v_sync_width; int h_size; int v_size; int h_border; int v_border; unsigned int interlaced:1; unsigned int stereo:2; unsigned int sync:2; unsigned int misc:2; unsigned int stereo_1:1; }; #define DT 0 #define DS_SERIAL 0xFF #define DS_ASCII_STR 0xFE #define DS_NAME 0xFC #define DS_RANGES 0xFD #define DS_WHITE_P 0xFB #define DS_STD_TIMINGS 0xFA #define DS_DUMMY 0x10 #define DS_UNKOWN 0x100 /* type is an int */ struct monitor_ranges { int min_v; int max_v; int min_h; int max_h; int max_clock; int gtf_2nd_f; int gtf_2nd_c; int gtf_2nd_m; int gtf_2nd_k; int gtf_2nd_j; }; struct whitePoints{ int index; float white_x; float white_y; float white_gamma; }; struct detailed_monitor_section { int type; union { struct detailed_timings d_timings; Uchar serial[13]; Uchar ascii_data[13]; Uchar name[13]; struct monitor_ranges ranges; struct std_timings std_t[5]; struct whitePoints wp[2]; } section; }; typedef struct { int scrnIndex; struct vendor vendor; struct edid_version ver; struct disp_features features; struct established_timings timings1; struct std_timings timings2[8]; struct detailed_monitor_section det_mon[4]; void *vdif; /* unused */ int no_sections; Uchar *rawData; } xf86Monitor, *xf86MonPtr; extern xf86MonPtr ConfiguredMonitor; #endif /* _EDID_H_ */