/* edid.S: EDID data template Copyright (C) 2012 Carsten Emde This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ /* Manufacturer */ #define MFG_LNX1 'L' #define MFG_LNX2 'N' #define MFG_LNX3 'X' #define SERIAL 0 #define YEAR 2012 #define WEEK 5 /* EDID 1.3 standard definitions */ #define XY_RATIO_16_10 0b00 #define XY_RATIO_4_3 0b01 #define XY_RATIO_5_4 0b10 #define XY_RATIO_16_9 0b11 #define mfgname2id(v1,v2,v3) \ ((((v1-'@')&0x1f)<<10)+(((v2-'@')&0x1f)<<5)+((v3-'@')&0x1f)) #define swap16(v1) ((v1>>8)+((v1&0xff)<<8)) #define msbs2(v1,v2) ((((v1>>8)&0x0f)<<4)+((v2>>8)&0x0f)) #define msbs4(v1,v2,v3,v4) \ (((v1&0x03)>>2)+((v2&0x03)>>4)+((v3&0x03)>>6)+((v4&0x03)>>8)) #define pixdpi2mm(pix,dpi) ((pix*25)/dpi) #define xsize pixdpi2mm(XPIX,DPI) #define ysize pixdpi2mm(YPIX,DPI) .data /* Fixed header pattern */ header: .byte 0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00 mfg_id: .word swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3)) prod_code: .word 0 /* Serial number. 32 bits, little endian. */ serial_number: .long SERIAL /* Week of manufacture */ week: .byte WEEK /* Year of manufacture, less 1990. (1990-2245) If week=255, it is the model year instead */ year: .byte YEAR-1990 version: .byte VERSION /* EDID version, usually 1 (for 1.3) */ revision: .byte REVISION /* EDID revision, usually 3 (for 1.3) */ /* If Bit 7=1 Digital input. If set, the following bit definitions apply: Bits 6-1 Reserved, must be 0 Bit 0 Signal is compatible with VESA DFP 1.x TMDS CRGB, 1 pixel per clock, up to 8 bits per color, MSB aligned, If Bit 7=0 Analog input. If clear, the following bit definitions apply: Bits 6-5 Video white and sync levels, relative to blank 00=+0.7/-0.3 V; 01=+0.714/-0.286 V; 10=+1.0/-0.4 V; 11=+0.7/0 V Bit 4 Blank-to-black setup (pedestal) expected Bit 3 Separate sync supported Bit 2 Composite sync (on HSync) supported Bit 1 Sync on green supported Bit 0 VSync pulse must be serrated when somposite or sync-on-green is used. */ video_parms: .byte 0x6d /* Maximum horizontal image size, in centimetres (max 292 cm/115 in at 16:9 aspect ratio) */ max_hor_size: .byte xsize/10 /* Maximum vertical image size, in centimetres. If either byte is 0, undefined (e.g. projector) */ max_vert_size: .byte ysize/10 /* Display gamma, minus 1, times 100 (range 1.00-3.5 */ gamma: .byte 120 /* Bit 7 DPMS standby supported Bit 6 DPMS suspend supported Bit 5 DPMS active-off supported Bits 4-3 Display type: 00=monochrome; 01=RGB colour; 10=non-RGB multicolour; 11=undefined Bit 2 Standard sRGB colour space. Bytes 25-34 must contain sRGB standard values. Bit 1 Preferred timing mode specified in descriptor block 1. Bit 0 GTF supported with default parameter values. */ dsp_features: .byte 0xea /* Chromaticity coordinates. */ /* Red and green least-significant bits Bits 7-6 Red x value least-significant 2 bits Bits 5-4 Red y value least-significant 2 bits Bits 3-2 Green x value lst-significant 2 bits Bits 1-0 Green y value least-significant 2 bits */ red_green_lsb: .byte 0x5e /* Blue and white least-significant 2 bits */ blue_white_lsb: .byte 0xc0 /* Red x value most significant 8 bits. 0-255 encodes 0-0.996 (255/256); 0-0.999 (1023/1024) with lsbits */ red_x_msb: .byte 0xa4 /* Red y value most significant 8 bits */ red_y_msb: .byte 0x59 /* Green x and y value most significant 8 bits */ green_x_y_msb: .byte 0x4a,0x98 /* Blue x and y value most significant 8 bits */ blue_x_y_msb: .byte 0x25,0x20 /* Default white point x and y value most significant 8 bits */ white_x_y_msb: .byte 0x50,0x54 /* Established timings */ /* Bit 7 720x400 @ 70 Hz Bit 6 720x400 @ 88 Hz Bit 5 640x480 @ 60 Hz Bit 4 640x480 @ 67 Hz Bit 3 640x480 @ 72 Hz Bit 2 640x480 @ 75 Hz Bit 1 800x600 @ 56 Hz Bit 0 800x600 @ 60 Hz */ estbl_timing1: .byte 0x00 /* Bit 7 800x600 @ 72 Hz Bit 6 800x600 @ 75 Hz Bit 5 832x624 @ 75 Hz Bit 4 1024x768 @ 87 Hz, interlaced (1024x768) Bit 3 1024x768 @ 60 Hz Bit 2 1024x768 @ 72 Hz Bit 1 1024x768 @ 75 Hz Bit 0 1280x1024 @ 75 Hz */ estbl_timing2: .byte ESTABLISHED_TIMINGS_BITS /* Bit 7 1152x870 @ 75 Hz (Apple Macintosh II) Bits 6-0 Other manufacturer-specific display mod */ estbl_timing3: .byte 0x00 /* Standard timing */ /* X resolution, less 31, divided by 8 (256-2288 pixels) */ std_xres: .byte (XPIX/8)-31 /* Y resolution, X:Y pixel ratio Bits 7-6 X:Y pixel ratio: 00=16:10; 01=4:3; 10=5:4; 11=16:9. Bits 5-0 Vertical frequency, less 60 (60-123 Hz) */ std_vres: .byte (XY_RATIO<<6)+VFREQ-60 .fill 7,2,0x0101 /* Unused */ descriptor1: /* Pixel clock in 10 kHz units. (0.-655.35 MHz, little-endian) */ clock: .word CLOCK/10 /* Horizontal active pixels 8 lsbits (0-4095) */ x_act_lsb: .byte XPIX&0xff /* Horizontal blanking pixels 8 lsbits (0-4095) End of active to start of next active. */ x_blk_lsb: .byte XBLANK&0xff /* Bits 7-4 Horizontal active pixels 4 msbits Bits 3-0 Horizontal blanking pixels 4 msbits */ x_msbs: .byte msbs2(XPIX,XBLANK) /* Vertical active lines 8 lsbits (0-4095) */ y_act_lsb: .byte YPIX&0xff /* Vertical blanking lines 8 lsbits (0-4095) */ y_blk_lsb: .byte YBLANK&0xff /* Bits 7-4 Vertical active lines 4 msbits Bits 3-0 Vertical blanking lines 4 msbits */ y_msbs: .byte msbs2(YPIX,YBLANK) /* Horizontal sync offset pixels 8 lsbits (0-1023) From blanking start */ x_snc_off_lsb: .byte XOFFSET&0xff /* Horizontal sync pulse width pixels 8 lsbits (0-1023) */ x_snc_pls_lsb: .byte XPULSE&0xff /* Bits 7-4 Vertical sync offset lines 4 lsbits -63) Bits 3-0 Vertical sync pulse width lines 4 lsbits -63) */ y_snc_lsb: .byte ((YOFFSET-63)<<4)+(YPULSE-63) /* Bits 7-6 Horizontal sync offset pixels 2 msbits Bits 5-4 Horizontal sync pulse width pixels 2 msbits Bits 3-2 Vertical sync offset lines 2 msbits Bits 1-0 Vertical sync pulse width lines 2 msbits */ xy_snc_msbs: .byte msbs4(XOFFSET,XPULSE,YOFFSET,YPULSE) /* Horizontal display size, mm, 8 lsbits (0-4095 mm, 161 in) */ x_dsp_size: .byte xsize&0xff /* Vertical display size, mm, 8 lsbits (0-4095 mm, 161 in) */ y_dsp_size: .byte ysize&0xff /* Bits 7-4 Horizontal display size, mm, 4 msbits Bits 3-0 Vertical display size, mm, 4 msbits */ dsp_size_mbsb: .byte msbs2(xsize,ysize) /* Horizontal border pixels (each side; total is twice this) */ x_border: .byte 0 /* Vertical border lines (each side; total is twice this) */ y_border: .byte 0 /* Bit 7 Interlaced Bits 6-5 Stereo mode: 00=No stereo; other values depend on bit 0: Bit 0=0: 01=Field sequential, sync=1 during right; 10=similar, sync=1 during left; 11=4-way interleaved stereo Bit 0=1 2-way interleaved stereo: 01=Right image on even lines; 10=Left image on even lines; 11=side-by-side Bits 4-3 Sync type: 00=Analog composite; 01=Bipolar analog composite; 10=Digital composite (on HSync); 11=Digital separate Bit 2 If digital separate: Vertical sync polarity (1=positive) Other types: VSync serrated (HSync during VSync) Bit 1 If analog sync: Sync on all 3 RGB lines (else green only) Digital: HSync polarity (1=positive) Bit 0 2-way line-interleaved stereo, if bits 4-3 are not 00. */ features: .byte 0x18+(VSYNC_POL<<2)+(HSYNC_POL<<1) descriptor2: .byte 0,0 /* Not a detailed timing descriptor */ .byte 0 /* Must be zero */ .byte 0xff /* Descriptor is monitor serial number (text) */ .byte 0 /* Must be zero */ start1: .ascii "Linux #0" end1: .byte 0x0a /* End marker */ .fill 12-(end1-start1), 1, 0x20 /* Padded spaces */ descriptor3: .byte 0,0 /* Not a detailed timing descriptor */ .byte 0 /* Must be zero */ .byte 0xfd /* Descriptor is monitor range limits */ .byte 0 /* Must be zero */ start2: .byte VFREQ-1 /* Minimum vertical field rate (1-255 Hz) */ .byte VFREQ+1 /* Maximum vertical field rate (1-255 Hz) */ .byte (CLOCK/(XPIX+XBLANK))-1 /* Minimum horizontal line rate (1-255 kHz) */ .byte (CLOCK/(XPIX+XBLANK))+1 /* Maximum horizontal line rate (1-255 kHz) */ .byte (CLOCK/10000)+1 /* Maximum pixel clock rate, rounded up to 10 MHz multiple (10-2550 MHz) */ .byte 0 /* No extended timing information type */ end2: .byte 0x0a /* End marker */ .fill 12-(end2-start2), 1, 0x20 /* Padded spaces */ descriptor4: .byte 0,0 /* Not a detailed timing descriptor */ .byte 0 /* Must be zero */ .byte 0xfc /* Descriptor is text */ .byte 0 /* Must be zero */ start3: .ascii TIMING_NAME end3: .byte 0x0a /* End marker */ .fill 12-(end3-start3), 1, 0x20 /* Padded spaces */ extensions: .byte 0 /* Number of extensions to follow */ checksum: .byte CRC /* Sum of all bytes must be 0 */