/*
     edid.S: EDID data template
  
     Copyright (C) 2012 Carsten Emde <C.Emde@osadl.org>
  
     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 */