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