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 /* Provide defaults for the timing bits */ 37 #ifndef ESTABLISHED_TIMING1_BITS 38 #define ESTABLISHED_TIMING1_BITS 0x00 39 #endif 40 #ifndef ESTABLISHED_TIMING2_BITS 41 #define ESTABLISHED_TIMING2_BITS 0x00 42 #endif 43 #ifndef ESTABLISHED_TIMING3_BITS 44 #define ESTABLISHED_TIMING3_BITS 0x00 45 #endif 46 47 #define mfgname2id(v1,v2,v3) \ 48 ((((v1-'@')&0x1f)<<10)+(((v2-'@')&0x1f)<<5)+((v3-'@')&0x1f)) 49 #define swap16(v1) ((v1>>8)+((v1&0xff)<<8)) 50 #define lsbs2(v1,v2) (((v1&0x0f)<<4)+(v2&0x0f)) 51 #define msbs2(v1,v2) ((((v1>>8)&0x0f)<<4)+((v2>>8)&0x0f)) 52 #define msbs4(v1,v2,v3,v4) \ 53 ((((v1>>8)&0x03)<<6)+(((v2>>8)&0x03)<<4)+\ 54 (((v3>>4)&0x03)<<2)+((v4>>4)&0x03)) 55 #define pixdpi2mm(pix,dpi) ((pix*25)/dpi) 56 #define xsize pixdpi2mm(XPIX,DPI) 57 #define ysize pixdpi2mm(YPIX,DPI) 58 59 .data 60 61 /* Fixed header pattern */ 62 header: .byte 0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00 63 64 mfg_id: .hword swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3)) 65 66 prod_code: .hword 0 67 68 /* Serial number. 32 bits, little endian. */ 69 serial_number: .long SERIAL 70 71 /* Week of manufacture */ 72 week: .byte WEEK 73 74 /* Year of manufacture, less 1990. (1990-2245) 75 If week=255, it is the model year instead */ 76 year: .byte YEAR-1990 77 78 version: .byte VERSION /* EDID version, usually 1 (for 1.3) */ 79 revision: .byte REVISION /* EDID revision, usually 3 (for 1.3) */ 80 81 /* If Bit 7=1 Digital input. If set, the following bit definitions apply: 82 Bits 6-1 Reserved, must be 0 83 Bit 0 Signal is compatible with VESA DFP 1.x TMDS CRGB, 84 1 pixel per clock, up to 8 bits per color, MSB aligned, 85 If Bit 7=0 Analog input. If clear, the following bit definitions apply: 86 Bits 6-5 Video white and sync levels, relative to blank 87 00=+0.7/-0.3 V; 01=+0.714/-0.286 V; 88 10=+1.0/-0.4 V; 11=+0.7/0 V 89 Bit 4 Blank-to-black setup (pedestal) expected 90 Bit 3 Separate sync supported 91 Bit 2 Composite sync (on HSync) supported 92 Bit 1 Sync on green supported 93 Bit 0 VSync pulse must be serrated when somposite or 94 sync-on-green is used. */ 95 video_parms: .byte 0x6d 96 97 /* Maximum horizontal image size, in centimetres 98 (max 292 cm/115 in at 16:9 aspect ratio) */ 99 max_hor_size: .byte xsize/10 100 101 /* Maximum vertical image size, in centimetres. 102 If either byte is 0, undefined (e.g. projector) */ 103 max_vert_size: .byte ysize/10 104 105 /* Display gamma, minus 1, times 100 (range 1.00-3.5 */ 106 gamma: .byte 120 107 108 /* Bit 7 DPMS standby supported 109 Bit 6 DPMS suspend supported 110 Bit 5 DPMS active-off supported 111 Bits 4-3 Display type: 00=monochrome; 01=RGB colour; 112 10=non-RGB multicolour; 11=undefined 113 Bit 2 Standard sRGB colour space. Bytes 25-34 must contain 114 sRGB standard values. 115 Bit 1 Preferred timing mode specified in descriptor block 1. 116 Bit 0 GTF supported with default parameter values. */ 117 dsp_features: .byte 0xea 118 119 /* Chromaticity coordinates. */ 120 /* Red and green least-significant bits 121 Bits 7-6 Red x value least-significant 2 bits 122 Bits 5-4 Red y value least-significant 2 bits 123 Bits 3-2 Green x value lst-significant 2 bits 124 Bits 1-0 Green y value least-significant 2 bits */ 125 red_green_lsb: .byte 0x5e 126 127 /* Blue and white least-significant 2 bits */ 128 blue_white_lsb: .byte 0xc0 129 130 /* Red x value most significant 8 bits. 131 0-255 encodes 0-0.996 (255/256); 0-0.999 (1023/1024) with lsbits */ 132 red_x_msb: .byte 0xa4 133 134 /* Red y value most significant 8 bits */ 135 red_y_msb: .byte 0x59 136 137 /* Green x and y value most significant 8 bits */ 138 green_x_y_msb: .byte 0x4a,0x98 139 140 /* Blue x and y value most significant 8 bits */ 141 blue_x_y_msb: .byte 0x25,0x20 142 143 /* Default white point x and y value most significant 8 bits */ 144 white_x_y_msb: .byte 0x50,0x54 145 146 /* Established timings */ 147 /* Bit 7 720x400 @ 70 Hz 148 Bit 6 720x400 @ 88 Hz 149 Bit 5 640x480 @ 60 Hz 150 Bit 4 640x480 @ 67 Hz 151 Bit 3 640x480 @ 72 Hz 152 Bit 2 640x480 @ 75 Hz 153 Bit 1 800x600 @ 56 Hz 154 Bit 0 800x600 @ 60 Hz */ 155 estbl_timing1: .byte ESTABLISHED_TIMING1_BITS 156 157 /* Bit 7 800x600 @ 72 Hz 158 Bit 6 800x600 @ 75 Hz 159 Bit 5 832x624 @ 75 Hz 160 Bit 4 1024x768 @ 87 Hz, interlaced (1024x768) 161 Bit 3 1024x768 @ 60 Hz 162 Bit 2 1024x768 @ 72 Hz 163 Bit 1 1024x768 @ 75 Hz 164 Bit 0 1280x1024 @ 75 Hz */ 165 estbl_timing2: .byte ESTABLISHED_TIMING2_BITS 166 167 /* Bit 7 1152x870 @ 75 Hz (Apple Macintosh II) 168 Bits 6-0 Other manufacturer-specific display mod */ 169 estbl_timing3: .byte ESTABLISHED_TIMING3_BITS 170 171 /* Standard timing */ 172 /* X resolution, less 31, divided by 8 (256-2288 pixels) */ 173 std_xres: .byte (XPIX/8)-31 174 /* Y resolution, X:Y pixel ratio 175 Bits 7-6 X:Y pixel ratio: 00=16:10; 01=4:3; 10=5:4; 11=16:9. 176 Bits 5-0 Vertical frequency, less 60 (60-123 Hz) */ 177 std_vres: .byte (XY_RATIO<<6)+VFREQ-60 178 .fill 7,2,0x0101 /* Unused */ 179 180 descriptor1: 181 /* Pixel clock in 10 kHz units. (0.-655.35 MHz, little-endian) */ 182 clock: .hword CLOCK/10 183 184 /* Horizontal active pixels 8 lsbits (0-4095) */ 185 x_act_lsb: .byte XPIX&0xff 186 /* Horizontal blanking pixels 8 lsbits (0-4095) 187 End of active to start of next active. */ 188 x_blk_lsb: .byte XBLANK&0xff 189 /* Bits 7-4 Horizontal active pixels 4 msbits 190 Bits 3-0 Horizontal blanking pixels 4 msbits */ 191 x_msbs: .byte msbs2(XPIX,XBLANK) 192 193 /* Vertical active lines 8 lsbits (0-4095) */ 194 y_act_lsb: .byte YPIX&0xff 195 /* Vertical blanking lines 8 lsbits (0-4095) */ 196 y_blk_lsb: .byte YBLANK&0xff 197 /* Bits 7-4 Vertical active lines 4 msbits 198 Bits 3-0 Vertical blanking lines 4 msbits */ 199 y_msbs: .byte msbs2(YPIX,YBLANK) 200 201 /* Horizontal sync offset pixels 8 lsbits (0-1023) From blanking start */ 202 x_snc_off_lsb: .byte XOFFSET&0xff 203 /* Horizontal sync pulse width pixels 8 lsbits (0-1023) */ 204 x_snc_pls_lsb: .byte XPULSE&0xff 205 /* Bits 7-4 Vertical sync offset lines 4 lsbits (0-63) 206 Bits 3-0 Vertical sync pulse width lines 4 lsbits (0-63) */ 207 y_snc_lsb: .byte lsbs2(YOFFSET, YPULSE) 208 /* Bits 7-6 Horizontal sync offset pixels 2 msbits 209 Bits 5-4 Horizontal sync pulse width pixels 2 msbits 210 Bits 3-2 Vertical sync offset lines 2 msbits 211 Bits 1-0 Vertical sync pulse width lines 2 msbits */ 212 xy_snc_msbs: .byte msbs4(XOFFSET,XPULSE,YOFFSET,YPULSE) 213 214 /* Horizontal display size, mm, 8 lsbits (0-4095 mm, 161 in) */ 215 x_dsp_size: .byte xsize&0xff 216 217 /* Vertical display size, mm, 8 lsbits (0-4095 mm, 161 in) */ 218 y_dsp_size: .byte ysize&0xff 219 220 /* Bits 7-4 Horizontal display size, mm, 4 msbits 221 Bits 3-0 Vertical display size, mm, 4 msbits */ 222 dsp_size_mbsb: .byte msbs2(xsize,ysize) 223 224 /* Horizontal border pixels (each side; total is twice this) */ 225 x_border: .byte 0 226 /* Vertical border lines (each side; total is twice this) */ 227 y_border: .byte 0 228 229 /* Bit 7 Interlaced 230 Bits 6-5 Stereo mode: 00=No stereo; other values depend on bit 0: 231 Bit 0=0: 01=Field sequential, sync=1 during right; 10=similar, 232 sync=1 during left; 11=4-way interleaved stereo 233 Bit 0=1 2-way interleaved stereo: 01=Right image on even lines; 234 10=Left image on even lines; 11=side-by-side 235 Bits 4-3 Sync type: 00=Analog composite; 01=Bipolar analog composite; 236 10=Digital composite (on HSync); 11=Digital separate 237 Bit 2 If digital separate: Vertical sync polarity (1=positive) 238 Other types: VSync serrated (HSync during VSync) 239 Bit 1 If analog sync: Sync on all 3 RGB lines (else green only) 240 Digital: HSync polarity (1=positive) 241 Bit 0 2-way line-interleaved stereo, if bits 4-3 are not 00. */ 242 features: .byte 0x18+(VSYNC_POL<<2)+(HSYNC_POL<<1) 243 244 descriptor2: .byte 0,0 /* Not a detailed timing descriptor */ 245 .byte 0 /* Must be zero */ 246 .byte 0xff /* Descriptor is monitor serial number (text) */ 247 .byte 0 /* Must be zero */ 248 start1: .ascii "Linux #0" 249 end1: .byte 0x0a /* End marker */ 250 .fill 12-(end1-start1), 1, 0x20 /* Padded spaces */ 251 descriptor3: .byte 0,0 /* Not a detailed timing descriptor */ 252 .byte 0 /* Must be zero */ 253 .byte 0xfd /* Descriptor is monitor range limits */ 254 .byte 0 /* Must be zero */ 255 start2: .byte VFREQ-1 /* Minimum vertical field rate (1-255 Hz) */ 256 .byte VFREQ+1 /* Maximum vertical field rate (1-255 Hz) */ 257 .byte (CLOCK/(XPIX+XBLANK))-1 /* Minimum horizontal line rate 258 (1-255 kHz) */ 259 .byte (CLOCK/(XPIX+XBLANK))+1 /* Maximum horizontal line rate 260 (1-255 kHz) */ 261 .byte (CLOCK/10000)+1 /* Maximum pixel clock rate, rounded up 262 to 10 MHz multiple (10-2550 MHz) */ 263 .byte 0 /* No extended timing information type */ 264 end2: .byte 0x0a /* End marker */ 265 .fill 12-(end2-start2), 1, 0x20 /* Padded spaces */ 266 descriptor4: .byte 0,0 /* Not a detailed timing descriptor */ 267 .byte 0 /* Must be zero */ 268 .byte 0xfc /* Descriptor is text */ 269 .byte 0 /* Must be zero */ 270 start3: .ascii TIMING_NAME 271 end3: .byte 0x0a /* End marker */ 272 .fill 12-(end3-start3), 1, 0x20 /* Padded spaces */ 273 extensions: .byte 0 /* Number of extensions to follow */ 274 checksum: .byte CRC /* Sum of all bytes must be 0 */ 275