1/* 2 edid.S: EDID data template 3 4 Copyright (C) 2012 Carsten Emde <C.Emde@osadl.org> 5 6 This program is free software; you can redistribute it and/or 7 modify it under the terms of the GNU General Public License 8 as published by the Free Software Foundation; either version 2 9 of the License, or (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19*/ 20 21 22/* Manufacturer */ 23#define MFG_LNX1 'L' 24#define MFG_LNX2 'N' 25#define MFG_LNX3 'X' 26#define SERIAL 0 27#define YEAR 2012 28#define WEEK 5 29 30/* EDID 1.3 standard definitions */ 31#define XY_RATIO_16_10 0b00 32#define XY_RATIO_4_3 0b01 33#define XY_RATIO_5_4 0b10 34#define XY_RATIO_16_9 0b11 35 36#define mfgname2id(v1,v2,v3) \ 37 ((((v1-'@')&0x1f)<<10)+(((v2-'@')&0x1f)<<5)+((v3-'@')&0x1f)) 38#define swap16(v1) ((v1>>8)+((v1&0xff)<<8)) 39#define msbs2(v1,v2) ((((v1>>8)&0x0f)<<4)+((v2>>8)&0x0f)) 40#define msbs4(v1,v2,v3,v4) \ 41 (((v1&0x03)>>2)+((v2&0x03)>>4)+((v3&0x03)>>6)+((v4&0x03)>>8)) 42#define pixdpi2mm(pix,dpi) ((pix*25)/dpi) 43#define xsize pixdpi2mm(XPIX,DPI) 44#define ysize pixdpi2mm(YPIX,DPI) 45 46 .data 47 48/* Fixed header pattern */ 49header: .byte 0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00 50 51mfg_id: .word swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3)) 52 53prod_code: .word 0 54 55/* Serial number. 32 bits, little endian. */ 56serial_number: .long SERIAL 57 58/* Week of manufacture */ 59week: .byte WEEK 60 61/* Year of manufacture, less 1990. (1990-2245) 62 If week=255, it is the model year instead */ 63year: .byte YEAR-1990 64 65version: .byte VERSION /* EDID version, usually 1 (for 1.3) */ 66revision: .byte REVISION /* EDID revision, usually 3 (for 1.3) */ 67 68/* If Bit 7=1 Digital input. If set, the following bit definitions apply: 69 Bits 6-1 Reserved, must be 0 70 Bit 0 Signal is compatible with VESA DFP 1.x TMDS CRGB, 71 1 pixel per clock, up to 8 bits per color, MSB aligned, 72 If Bit 7=0 Analog input. If clear, the following bit definitions apply: 73 Bits 6-5 Video white and sync levels, relative to blank 74 00=+0.7/-0.3 V; 01=+0.714/-0.286 V; 75 10=+1.0/-0.4 V; 11=+0.7/0 V 76 Bit 4 Blank-to-black setup (pedestal) expected 77 Bit 3 Separate sync supported 78 Bit 2 Composite sync (on HSync) supported 79 Bit 1 Sync on green supported 80 Bit 0 VSync pulse must be serrated when somposite or 81 sync-on-green is used. */ 82video_parms: .byte 0x6d 83 84/* Maximum horizontal image size, in centimetres 85 (max 292 cm/115 in at 16:9 aspect ratio) */ 86max_hor_size: .byte xsize/10 87 88/* Maximum vertical image size, in centimetres. 89 If either byte is 0, undefined (e.g. projector) */ 90max_vert_size: .byte ysize/10 91 92/* Display gamma, minus 1, times 100 (range 1.00-3.5 */ 93gamma: .byte 120 94 95/* Bit 7 DPMS standby supported 96 Bit 6 DPMS suspend supported 97 Bit 5 DPMS active-off supported 98 Bits 4-3 Display type: 00=monochrome; 01=RGB colour; 99 10=non-RGB multicolour; 11=undefined 100 Bit 2 Standard sRGB colour space. Bytes 25-34 must contain 101 sRGB standard values. 102 Bit 1 Preferred timing mode specified in descriptor block 1. 103 Bit 0 GTF supported with default parameter values. */ 104dsp_features: .byte 0xea 105 106/* Chromaticity coordinates. */ 107/* Red and green least-significant bits 108 Bits 7-6 Red x value least-significant 2 bits 109 Bits 5-4 Red y value least-significant 2 bits 110 Bits 3-2 Green x value lst-significant 2 bits 111 Bits 1-0 Green y value least-significant 2 bits */ 112red_green_lsb: .byte 0x5e 113 114/* Blue and white least-significant 2 bits */ 115blue_white_lsb: .byte 0xc0 116 117/* Red x value most significant 8 bits. 118 0-255 encodes 0-0.996 (255/256); 0-0.999 (1023/1024) with lsbits */ 119red_x_msb: .byte 0xa4 120 121/* Red y value most significant 8 bits */ 122red_y_msb: .byte 0x59 123 124/* Green x and y value most significant 8 bits */ 125green_x_y_msb: .byte 0x4a,0x98 126 127/* Blue x and y value most significant 8 bits */ 128blue_x_y_msb: .byte 0x25,0x20 129 130/* Default white point x and y value most significant 8 bits */ 131white_x_y_msb: .byte 0x50,0x54 132 133/* Established timings */ 134/* Bit 7 720x400 @ 70 Hz 135 Bit 6 720x400 @ 88 Hz 136 Bit 5 640x480 @ 60 Hz 137 Bit 4 640x480 @ 67 Hz 138 Bit 3 640x480 @ 72 Hz 139 Bit 2 640x480 @ 75 Hz 140 Bit 1 800x600 @ 56 Hz 141 Bit 0 800x600 @ 60 Hz */ 142estbl_timing1: .byte 0x00 143 144/* Bit 7 800x600 @ 72 Hz 145 Bit 6 800x600 @ 75 Hz 146 Bit 5 832x624 @ 75 Hz 147 Bit 4 1024x768 @ 87 Hz, interlaced (1024x768) 148 Bit 3 1024x768 @ 60 Hz 149 Bit 2 1024x768 @ 72 Hz 150 Bit 1 1024x768 @ 75 Hz 151 Bit 0 1280x1024 @ 75 Hz */ 152estbl_timing2: .byte ESTABLISHED_TIMINGS_BITS 153 154/* Bit 7 1152x870 @ 75 Hz (Apple Macintosh II) 155 Bits 6-0 Other manufacturer-specific display mod */ 156estbl_timing3: .byte 0x00 157 158/* Standard timing */ 159/* X resolution, less 31, divided by 8 (256-2288 pixels) */ 160std_xres: .byte (XPIX/8)-31 161/* Y resolution, X:Y pixel ratio 162 Bits 7-6 X:Y pixel ratio: 00=16:10; 01=4:3; 10=5:4; 11=16:9. 163 Bits 5-0 Vertical frequency, less 60 (60-123 Hz) */ 164std_vres: .byte (XY_RATIO<<6)+VFREQ-60 165 .fill 7,2,0x0101 /* Unused */ 166 167descriptor1: 168/* Pixel clock in 10 kHz units. (0.-655.35 MHz, little-endian) */ 169clock: .word CLOCK/10 170 171/* Horizontal active pixels 8 lsbits (0-4095) */ 172x_act_lsb: .byte XPIX&0xff 173/* Horizontal blanking pixels 8 lsbits (0-4095) 174 End of active to start of next active. */ 175x_blk_lsb: .byte XBLANK&0xff 176/* Bits 7-4 Horizontal active pixels 4 msbits 177 Bits 3-0 Horizontal blanking pixels 4 msbits */ 178x_msbs: .byte msbs2(XPIX,XBLANK) 179 180/* Vertical active lines 8 lsbits (0-4095) */ 181y_act_lsb: .byte YPIX&0xff 182/* Vertical blanking lines 8 lsbits (0-4095) */ 183y_blk_lsb: .byte YBLANK&0xff 184/* Bits 7-4 Vertical active lines 4 msbits 185 Bits 3-0 Vertical blanking lines 4 msbits */ 186y_msbs: .byte msbs2(YPIX,YBLANK) 187 188/* Horizontal sync offset pixels 8 lsbits (0-1023) From blanking start */ 189x_snc_off_lsb: .byte XOFFSET&0xff 190/* Horizontal sync pulse width pixels 8 lsbits (0-1023) */ 191x_snc_pls_lsb: .byte XPULSE&0xff 192/* Bits 7-4 Vertical sync offset lines 4 lsbits -63) 193 Bits 3-0 Vertical sync pulse width lines 4 lsbits -63) */ 194y_snc_lsb: .byte ((YOFFSET-63)<<4)+(YPULSE-63) 195/* Bits 7-6 Horizontal sync offset pixels 2 msbits 196 Bits 5-4 Horizontal sync pulse width pixels 2 msbits 197 Bits 3-2 Vertical sync offset lines 2 msbits 198 Bits 1-0 Vertical sync pulse width lines 2 msbits */ 199xy_snc_msbs: .byte msbs4(XOFFSET,XPULSE,YOFFSET,YPULSE) 200 201/* Horizontal display size, mm, 8 lsbits (0-4095 mm, 161 in) */ 202x_dsp_size: .byte xsize&0xff 203 204/* Vertical display size, mm, 8 lsbits (0-4095 mm, 161 in) */ 205y_dsp_size: .byte ysize&0xff 206 207/* Bits 7-4 Horizontal display size, mm, 4 msbits 208 Bits 3-0 Vertical display size, mm, 4 msbits */ 209dsp_size_mbsb: .byte msbs2(xsize,ysize) 210 211/* Horizontal border pixels (each side; total is twice this) */ 212x_border: .byte 0 213/* Vertical border lines (each side; total is twice this) */ 214y_border: .byte 0 215 216/* Bit 7 Interlaced 217 Bits 6-5 Stereo mode: 00=No stereo; other values depend on bit 0: 218 Bit 0=0: 01=Field sequential, sync=1 during right; 10=similar, 219 sync=1 during left; 11=4-way interleaved stereo 220 Bit 0=1 2-way interleaved stereo: 01=Right image on even lines; 221 10=Left image on even lines; 11=side-by-side 222 Bits 4-3 Sync type: 00=Analog composite; 01=Bipolar analog composite; 223 10=Digital composite (on HSync); 11=Digital separate 224 Bit 2 If digital separate: Vertical sync polarity (1=positive) 225 Other types: VSync serrated (HSync during VSync) 226 Bit 1 If analog sync: Sync on all 3 RGB lines (else green only) 227 Digital: HSync polarity (1=positive) 228 Bit 0 2-way line-interleaved stereo, if bits 4-3 are not 00. */ 229features: .byte 0x18+(VSYNC_POL<<2)+(HSYNC_POL<<1) 230 231descriptor2: .byte 0,0 /* Not a detailed timing descriptor */ 232 .byte 0 /* Must be zero */ 233 .byte 0xff /* Descriptor is monitor serial number (text) */ 234 .byte 0 /* Must be zero */ 235start1: .ascii "Linux #0" 236end1: .byte 0x0a /* End marker */ 237 .fill 12-(end1-start1), 1, 0x20 /* Padded spaces */ 238descriptor3: .byte 0,0 /* Not a detailed timing descriptor */ 239 .byte 0 /* Must be zero */ 240 .byte 0xfd /* Descriptor is monitor range limits */ 241 .byte 0 /* Must be zero */ 242start2: .byte VFREQ-1 /* Minimum vertical field rate (1-255 Hz) */ 243 .byte VFREQ+1 /* Maximum vertical field rate (1-255 Hz) */ 244 .byte (CLOCK/(XPIX+XBLANK))-1 /* Minimum horizontal line rate 245 (1-255 kHz) */ 246 .byte (CLOCK/(XPIX+XBLANK))+1 /* Maximum horizontal line rate 247 (1-255 kHz) */ 248 .byte (CLOCK/10000)+1 /* Maximum pixel clock rate, rounded up 249 to 10 MHz multiple (10-2550 MHz) */ 250 .byte 0 /* No extended timing information type */ 251end2: .byte 0x0a /* End marker */ 252 .fill 12-(end2-start2), 1, 0x20 /* Padded spaces */ 253descriptor4: .byte 0,0 /* Not a detailed timing descriptor */ 254 .byte 0 /* Must be zero */ 255 .byte 0xfc /* Descriptor is text */ 256 .byte 0 /* Must be zero */ 257start3: .ascii TIMING_NAME 258end3: .byte 0x0a /* End marker */ 259 .fill 12-(end3-start3), 1, 0x20 /* Padded spaces */ 260extensions: .byte 0 /* Number of extensions to follow */ 261checksum: .byte CRC /* Sum of all bytes must be 0 */ 262