| blob | c3d13815526dbd64b1b6b2d54c9afd31974b7c8a |
1 /*
2 edid.S: EDID data template
4 Copyright (C) 2012 Carsten Emde <C.Emde@osadl.org>
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.
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.
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 */
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
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
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
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)
59 .data
61 /* Fixed header pattern */
62 header: .byte 0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00
64 mfg_id: .hword swap16(mfgname2id(MFG_LNX1, MFG_LNX2, MFG_LNX3))
66 prod_code: .hword 0
68 /* Serial number. 32 bits, little endian. */
69 serial_number: .long SERIAL
71 /* Week of manufacture */
72 week: .byte WEEK
74 /* Year of manufacture, less 1990. (1990-2245)
75 If week=255, it is the model year instead */
76 year: .byte YEAR-1990
78 version: .byte VERSION /* EDID version, usually 1 (for 1.3) */
79 revision: .byte REVISION /* EDID revision, usually 3 (for 1.3) */
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
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
101 /* Maximum vertical image size, in centimetres.
102 If either byte is 0, undefined (e.g. projector) */
103 max_vert_size: .byte ysize/10
105 /* Display gamma, minus 1, times 100 (range 1.00-3.5 */
106 gamma: .byte 120
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
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
127 /* Blue and white least-significant 2 bits */
128 blue_white_lsb: .byte 0xc0
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
134 /* Red y value most significant 8 bits */
135 red_y_msb: .byte 0x59
137 /* Green x and y value most significant 8 bits */
138 green_x_y_msb: .byte 0x4a,0x98
140 /* Blue x and y value most significant 8 bits */
141 blue_x_y_msb: .byte 0x25,0x20
143 /* Default white point x and y value most significant 8 bits */
144 white_x_y_msb: .byte 0x50,0x54
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
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
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
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 */
180 descriptor1:
181 /* Pixel clock in 10 kHz units. (0.-655.35 MHz, little-endian) */
182 clock: .hword CLOCK/10
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)
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)
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)
214 /* Horizontal display size, mm, 8 lsbits (0-4095 mm, 161 in) */
215 x_dsp_size: .byte xsize&0xff
217 /* Vertical display size, mm, 8 lsbits (0-4095 mm, 161 in) */
218 y_dsp_size: .byte ysize&0xff
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)
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
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)
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 */