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[deliverable/linux.git] / drivers / video / modedb.c
1 /*
2 * linux/drivers/video/modedb.c -- Standard video mode database management
3 *
4 * Copyright (C) 1999 Geert Uytterhoeven
5 *
6 * 2001 - Documented with DocBook
7 * - Brad Douglas <brad@neruo.com>
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive for
11 * more details.
12 */
13
14 #include <linux/module.h>
15 #include <linux/fb.h>
16 #include <linux/sched.h>
17
18 #undef DEBUG
19
20 #define name_matches(v, s, l) \
21 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
22 #define res_matches(v, x, y) \
23 ((v).xres == (x) && (v).yres == (y))
24
25 #ifdef DEBUG
26 #define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __FUNCTION__ , ## args)
27 #else
28 #define DPRINTK(fmt, args...)
29 #endif
30
31 const char *global_mode_option;
32
33 /*
34 * Standard video mode definitions (taken from XFree86)
35 */
36
37 static const struct fb_videomode modedb[] = {
38 {
39 /* 640x400 @ 70 Hz, 31.5 kHz hsync */
40 NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
41 0, FB_VMODE_NONINTERLACED
42 }, {
43 /* 640x480 @ 60 Hz, 31.5 kHz hsync */
44 NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
45 0, FB_VMODE_NONINTERLACED
46 }, {
47 /* 800x600 @ 56 Hz, 35.15 kHz hsync */
48 NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2,
49 0, FB_VMODE_NONINTERLACED
50 }, {
51 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
52 NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8,
53 0, FB_VMODE_INTERLACED
54 }, {
55 /* 640x400 @ 85 Hz, 37.86 kHz hsync */
56 NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
57 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
58 }, {
59 /* 640x480 @ 72 Hz, 36.5 kHz hsync */
60 NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3,
61 0, FB_VMODE_NONINTERLACED
62 }, {
63 /* 640x480 @ 75 Hz, 37.50 kHz hsync */
64 NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
65 0, FB_VMODE_NONINTERLACED
66 }, {
67 /* 800x600 @ 60 Hz, 37.8 kHz hsync */
68 NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
69 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
70 }, {
71 /* 640x480 @ 85 Hz, 43.27 kHz hsync */
72 NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3,
73 0, FB_VMODE_NONINTERLACED
74 }, {
75 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
76 NULL, 69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10,
77 0, FB_VMODE_INTERLACED
78 }, {
79 /* 800x600 @ 72 Hz, 48.0 kHz hsync */
80 NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
81 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
82 }, {
83 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
84 NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6,
85 0, FB_VMODE_NONINTERLACED
86 }, {
87 /* 640x480 @ 100 Hz, 53.01 kHz hsync */
88 NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6,
89 0, FB_VMODE_NONINTERLACED
90 }, {
91 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
92 NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8,
93 0, FB_VMODE_NONINTERLACED
94 }, {
95 /* 800x600 @ 85 Hz, 55.84 kHz hsync */
96 NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5,
97 0, FB_VMODE_NONINTERLACED
98 }, {
99 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
100 NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
101 0, FB_VMODE_NONINTERLACED
102 }, {
103 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
104 NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12,
105 0, FB_VMODE_INTERLACED
106 }, {
107 /* 800x600 @ 100 Hz, 64.02 kHz hsync */
108 NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6,
109 0, FB_VMODE_NONINTERLACED
110 }, {
111 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
112 NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3,
113 0, FB_VMODE_NONINTERLACED
114 }, {
115 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
116 NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10,
117 0, FB_VMODE_NONINTERLACED
118 }, {
119 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
120 NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3,
121 0, FB_VMODE_NONINTERLACED
122 }, {
123 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
124 NULL, 68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3,
125 0, FB_VMODE_NONINTERLACED
126 }, {
127 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
128 NULL, 75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3,
129 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
130 }, {
131 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
132 NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
133 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
134 }, {
135 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
136 NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6,
137 0, FB_VMODE_NONINTERLACED
138 }, {
139 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
140 NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12,
141 0, FB_VMODE_NONINTERLACED
142 }, {
143 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
144 NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8,
145 0, FB_VMODE_NONINTERLACED
146 }, {
147 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
148 NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
149 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
150 }, {
151 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
152 NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12,
153 0, FB_VMODE_NONINTERLACED
154 }, {
155 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
156 NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3,
157 0, FB_VMODE_NONINTERLACED
158 }, {
159 /* 1024x768 @ 100Hz, 80.21 kHz hsync */
160 NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10,
161 0, FB_VMODE_NONINTERLACED
162 }, {
163 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
164 NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3,
165 0, FB_VMODE_NONINTERLACED
166 }, {
167 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
168 NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
169 0, FB_VMODE_NONINTERLACED
170 }, {
171 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
172 NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19,
173 0, FB_VMODE_NONINTERLACED
174 }, {
175 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
176 NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
177 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
178 }, {
179 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
180 NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
181 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
182 }, {
183 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
184 NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,
185 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
186 }, {
187 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
188 NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
189 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
190 }, {
191 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
192 NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15,
193 0, FB_VMODE_NONINTERLACED
194 }, {
195 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
196 NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
197 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
198 }, {
199 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
200 NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
201 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
202 }, {
203 /* 512x384 @ 78 Hz, 31.50 kHz hsync */
204 NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3,
205 0, FB_VMODE_NONINTERLACED
206 }, {
207 /* 512x384 @ 85 Hz, 34.38 kHz hsync */
208 NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3,
209 0, FB_VMODE_NONINTERLACED
210 }, {
211 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
212 NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1,
213 0, FB_VMODE_DOUBLE
214 }, {
215 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
216 NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1,
217 0, FB_VMODE_DOUBLE
218 }, {
219 /* 320x240 @ 72 Hz, 36.5 kHz hsync */
220 NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2,
221 0, FB_VMODE_DOUBLE
222 }, {
223 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
224 NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1,
225 0, FB_VMODE_DOUBLE
226 }, {
227 /* 400x300 @ 60 Hz, 37.8 kHz hsync */
228 NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2,
229 0, FB_VMODE_DOUBLE
230 }, {
231 /* 400x300 @ 72 Hz, 48.0 kHz hsync */
232 NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3,
233 0, FB_VMODE_DOUBLE
234 }, {
235 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
236 NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1,
237 0, FB_VMODE_DOUBLE
238 }, {
239 /* 480x300 @ 60 Hz, 37.8 kHz hsync */
240 NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2,
241 0, FB_VMODE_DOUBLE
242 }, {
243 /* 480x300 @ 63 Hz, 39.6 kHz hsync */
244 NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2,
245 0, FB_VMODE_DOUBLE
246 }, {
247 /* 480x300 @ 72 Hz, 48.0 kHz hsync */
248 NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3,
249 0, FB_VMODE_DOUBLE
250 }, {
251 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
252 NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
253 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
254 FB_VMODE_NONINTERLACED
255 }, {
256 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
257 NULL, 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6,
258 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
259 }, {
260 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
261 NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5,
262 0, FB_VMODE_NONINTERLACED
263 },
264 };
265
266 #ifdef CONFIG_FB_MODE_HELPERS
267 const struct fb_videomode vesa_modes[] = {
268 /* 0 640x350-85 VESA */
269 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
270 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
271 /* 1 640x400-85 VESA */
272 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
273 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
274 /* 2 720x400-85 VESA */
275 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
276 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
277 /* 3 640x480-60 VESA */
278 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
279 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
280 /* 4 640x480-72 VESA */
281 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
282 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
283 /* 5 640x480-75 VESA */
284 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
285 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
286 /* 6 640x480-85 VESA */
287 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
288 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
289 /* 7 800x600-56 VESA */
290 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
291 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
292 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
293 /* 8 800x600-60 VESA */
294 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
295 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
296 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
297 /* 9 800x600-72 VESA */
298 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
299 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
300 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
301 /* 10 800x600-75 VESA */
302 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
303 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
304 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
305 /* 11 800x600-85 VESA */
306 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
307 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
308 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
309 /* 12 1024x768i-43 VESA */
310 { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
311 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
312 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
313 /* 13 1024x768-60 VESA */
314 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
315 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
316 /* 14 1024x768-70 VESA */
317 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
318 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
319 /* 15 1024x768-75 VESA */
320 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
321 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
322 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
323 /* 16 1024x768-85 VESA */
324 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
326 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
327 /* 17 1152x864-75 VESA */
328 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
329 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
330 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
331 /* 18 1280x960-60 VESA */
332 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
335 /* 19 1280x960-85 VESA */
336 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
339 /* 20 1280x1024-60 VESA */
340 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
342 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
343 /* 21 1280x1024-75 VESA */
344 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
345 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
346 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
347 /* 22 1280x1024-85 VESA */
348 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
349 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
350 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
351 /* 23 1600x1200-60 VESA */
352 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
353 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
354 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
355 /* 24 1600x1200-65 VESA */
356 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
357 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
358 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
359 /* 25 1600x1200-70 VESA */
360 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
361 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
362 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
363 /* 26 1600x1200-75 VESA */
364 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
365 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
366 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
367 /* 27 1600x1200-85 VESA */
368 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
369 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
370 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
371 /* 28 1792x1344-60 VESA */
372 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
373 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
374 /* 29 1792x1344-75 VESA */
375 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
376 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
377 /* 30 1856x1392-60 VESA */
378 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
379 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
380 /* 31 1856x1392-75 VESA */
381 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
382 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
383 /* 32 1920x1440-60 VESA */
384 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
385 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
386 /* 33 1920x1440-75 VESA */
387 { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
388 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
389 };
390 EXPORT_SYMBOL(vesa_modes);
391 #endif /* CONFIG_FB_MODE_HELPERS */
392
393 static int my_atoi(const char *name)
394 {
395 int val = 0;
396
397 for (;; name++) {
398 switch (*name) {
399 case '0'...'9':
400 val = 10*val+(*name-'0');
401 break;
402 default:
403 return val;
404 }
405 }
406 }
407
408 /**
409 * fb_try_mode - test a video mode
410 * @var: frame buffer user defined part of display
411 * @info: frame buffer info structure
412 * @mode: frame buffer video mode structure
413 * @bpp: color depth in bits per pixel
414 *
415 * Tries a video mode to test it's validity for device @info.
416 *
417 * Returns 1 on success.
418 *
419 */
420
421 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
422 const struct fb_videomode *mode, unsigned int bpp)
423 {
424 int err = 0;
425
426 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
427 mode->xres, mode->yres, bpp, mode->refresh);
428 var->xres = mode->xres;
429 var->yres = mode->yres;
430 var->xres_virtual = mode->xres;
431 var->yres_virtual = mode->yres;
432 var->xoffset = 0;
433 var->yoffset = 0;
434 var->bits_per_pixel = bpp;
435 var->activate |= FB_ACTIVATE_TEST;
436 var->pixclock = mode->pixclock;
437 var->left_margin = mode->left_margin;
438 var->right_margin = mode->right_margin;
439 var->upper_margin = mode->upper_margin;
440 var->lower_margin = mode->lower_margin;
441 var->hsync_len = mode->hsync_len;
442 var->vsync_len = mode->vsync_len;
443 var->sync = mode->sync;
444 var->vmode = mode->vmode;
445 if (info->fbops->fb_check_var)
446 err = info->fbops->fb_check_var(var, info);
447 var->activate &= ~FB_ACTIVATE_TEST;
448 return err;
449 }
450
451 /**
452 * fb_find_mode - finds a valid video mode
453 * @var: frame buffer user defined part of display
454 * @info: frame buffer info structure
455 * @mode_option: string video mode to find
456 * @db: video mode database
457 * @dbsize: size of @db
458 * @default_mode: default video mode to fall back to
459 * @default_bpp: default color depth in bits per pixel
460 *
461 * Finds a suitable video mode, starting with the specified mode
462 * in @mode_option with fallback to @default_mode. If
463 * @default_mode fails, all modes in the video mode database will
464 * be tried.
465 *
466 * Valid mode specifiers for @mode_option:
467 *
468 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
469 * <name>[-<bpp>][@<refresh>]
470 *
471 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
472 * <name> a string.
473 *
474 * If 'M' is present after yres (and before refresh/bpp if present),
475 * the function will compute the timings using VESA(tm) Coordinated
476 * Video Timings (CVT). If 'R' is present after 'M', will compute with
477 * reduced blanking (for flatpanels). If 'i' is present, compute
478 * interlaced mode. If 'm' is present, add margins equal to 1.8%
479 * of xres rounded down to 8 pixels, and 1.8% of yres. The char
480 * 'i' and 'm' must be after 'M' and 'R'. Example:
481 *
482 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
483 *
484 * NOTE: The passed struct @var is _not_ cleared! This allows you
485 * to supply values for e.g. the grayscale and accel_flags fields.
486 *
487 * Returns zero for failure, 1 if using specified @mode_option,
488 * 2 if using specified @mode_option with an ignored refresh rate,
489 * 3 if default mode is used, 4 if fall back to any valid mode.
490 *
491 */
492
493 int fb_find_mode(struct fb_var_screeninfo *var,
494 struct fb_info *info, const char *mode_option,
495 const struct fb_videomode *db, unsigned int dbsize,
496 const struct fb_videomode *default_mode,
497 unsigned int default_bpp)
498 {
499 int i;
500
501 /* Set up defaults */
502 if (!db) {
503 db = modedb;
504 dbsize = ARRAY_SIZE(modedb);
505 }
506
507 if (!default_mode)
508 default_mode = &db[0];
509
510 if (!default_bpp)
511 default_bpp = 8;
512
513 /* Did the user specify a video mode? */
514 if (mode_option || (mode_option = global_mode_option)) {
515 const char *name = mode_option;
516 unsigned int namelen = strlen(name);
517 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
518 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
519 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
520 u32 best, diff;
521
522 for (i = namelen-1; i >= 0; i--) {
523 switch (name[i]) {
524 case '@':
525 namelen = i;
526 if (!refresh_specified && !bpp_specified &&
527 !yres_specified) {
528 refresh = my_atoi(&name[i+1]);
529 refresh_specified = 1;
530 if (cvt || rb)
531 cvt = 0;
532 } else
533 goto done;
534 break;
535 case '-':
536 namelen = i;
537 if (!bpp_specified && !yres_specified) {
538 bpp = my_atoi(&name[i+1]);
539 bpp_specified = 1;
540 if (cvt || rb)
541 cvt = 0;
542 } else
543 goto done;
544 break;
545 case 'x':
546 if (!yres_specified) {
547 yres = my_atoi(&name[i+1]);
548 yres_specified = 1;
549 } else
550 goto done;
551 break;
552 case '0'...'9':
553 break;
554 case 'M':
555 if (!yres_specified)
556 cvt = 1;
557 break;
558 case 'R':
559 if (!cvt)
560 rb = 1;
561 break;
562 case 'm':
563 if (!cvt)
564 margins = 1;
565 break;
566 case 'i':
567 if (!cvt)
568 interlace = 1;
569 break;
570 default:
571 goto done;
572 }
573 }
574 if (i < 0 && yres_specified) {
575 xres = my_atoi(name);
576 res_specified = 1;
577 }
578 done:
579 if (cvt) {
580 struct fb_videomode cvt_mode;
581 int ret;
582
583 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
584 (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
585 "", (margins) ? " with margins" : "", (interlace) ?
586 " interlaced" : "");
587
588 cvt_mode.xres = xres;
589 cvt_mode.yres = yres;
590 cvt_mode.refresh = (refresh) ? refresh : 60;
591
592 if (interlace)
593 cvt_mode.vmode |= FB_VMODE_INTERLACED;
594 else
595 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
596
597 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
598
599 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
600 DPRINTK("modedb CVT: CVT mode ok\n");
601 return 1;
602 }
603
604 DPRINTK("CVT mode invalid, getting mode from database\n");
605 }
606
607 DPRINTK("Trying specified video mode%s %ix%i\n",
608 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
609
610 diff = refresh;
611 best = -1;
612 for (i = 0; i < dbsize; i++) {
613 if ((name_matches(db[i], name, namelen) &&
614 !fb_try_mode(var, info, &db[i], bpp)))
615 return 1;
616 if (res_specified && res_matches(db[i], xres, yres)) {
617 if(!fb_try_mode(var, info, &db[i], bpp)) {
618 if(!refresh_specified || db[i].refresh == refresh)
619 return 1;
620 else {
621 if(diff > abs(db[i].refresh - refresh)) {
622 diff = abs(db[i].refresh - refresh);
623 best = i;
624 }
625 }
626 }
627 }
628 }
629 if (best != -1) {
630 fb_try_mode(var, info, &db[best], bpp);
631 return 2;
632 }
633
634 diff = xres + yres;
635 best = -1;
636 DPRINTK("Trying best-fit modes\n");
637 for (i = 0; i < dbsize; i++) {
638 if (xres <= db[i].xres && yres <= db[i].yres) {
639 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
640 if (!fb_try_mode(var, info, &db[i], bpp)) {
641 if (diff > (db[i].xres - xres) + (db[i].yres - yres)) {
642 diff = (db[i].xres - xres) + (db[i].yres - yres);
643 best = i;
644 }
645 }
646 }
647 }
648 if (best != -1) {
649 fb_try_mode(var, info, &db[best], bpp);
650 return 5;
651 }
652 }
653
654 DPRINTK("Trying default video mode\n");
655 if (!fb_try_mode(var, info, default_mode, default_bpp))
656 return 3;
657
658 DPRINTK("Trying all modes\n");
659 for (i = 0; i < dbsize; i++)
660 if (!fb_try_mode(var, info, &db[i], default_bpp))
661 return 4;
662
663 DPRINTK("No valid mode found\n");
664 return 0;
665 }
666
667 /**
668 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
669 * @mode: pointer to struct fb_videomode
670 * @var: pointer to struct fb_var_screeninfo
671 */
672 void fb_var_to_videomode(struct fb_videomode *mode,
673 struct fb_var_screeninfo *var)
674 {
675 u32 pixclock, hfreq, htotal, vtotal;
676
677 mode->name = NULL;
678 mode->xres = var->xres;
679 mode->yres = var->yres;
680 mode->pixclock = var->pixclock;
681 mode->hsync_len = var->hsync_len;
682 mode->vsync_len = var->vsync_len;
683 mode->left_margin = var->left_margin;
684 mode->right_margin = var->right_margin;
685 mode->upper_margin = var->upper_margin;
686 mode->lower_margin = var->lower_margin;
687 mode->sync = var->sync;
688 mode->vmode = var->vmode & FB_VMODE_MASK;
689 mode->flag = FB_MODE_IS_FROM_VAR;
690 mode->refresh = 0;
691
692 if (!var->pixclock)
693 return;
694
695 pixclock = PICOS2KHZ(var->pixclock) * 1000;
696
697 htotal = var->xres + var->right_margin + var->hsync_len +
698 var->left_margin;
699 vtotal = var->yres + var->lower_margin + var->vsync_len +
700 var->upper_margin;
701
702 if (var->vmode & FB_VMODE_INTERLACED)
703 vtotal /= 2;
704 if (var->vmode & FB_VMODE_DOUBLE)
705 vtotal *= 2;
706
707 hfreq = pixclock/htotal;
708 mode->refresh = hfreq/vtotal;
709 }
710
711 /**
712 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
713 * @var: pointer to struct fb_var_screeninfo
714 * @mode: pointer to struct fb_videomode
715 */
716 void fb_videomode_to_var(struct fb_var_screeninfo *var,
717 struct fb_videomode *mode)
718 {
719 var->xres = mode->xres;
720 var->yres = mode->yres;
721 var->pixclock = mode->pixclock;
722 var->left_margin = mode->left_margin;
723 var->hsync_len = mode->hsync_len;
724 var->vsync_len = mode->vsync_len;
725 var->right_margin = mode->right_margin;
726 var->upper_margin = mode->upper_margin;
727 var->lower_margin = mode->lower_margin;
728 var->sync = mode->sync;
729 var->vmode = mode->vmode & FB_VMODE_MASK;
730 }
731
732 /**
733 * fb_mode_is_equal - compare 2 videomodes
734 * @mode1: first videomode
735 * @mode2: second videomode
736 *
737 * RETURNS:
738 * 1 if equal, 0 if not
739 */
740 int fb_mode_is_equal(struct fb_videomode *mode1,
741 struct fb_videomode *mode2)
742 {
743 return (mode1->xres == mode2->xres &&
744 mode1->yres == mode2->yres &&
745 mode1->pixclock == mode2->pixclock &&
746 mode1->hsync_len == mode2->hsync_len &&
747 mode1->vsync_len == mode2->vsync_len &&
748 mode1->left_margin == mode2->left_margin &&
749 mode1->right_margin == mode2->right_margin &&
750 mode1->upper_margin == mode2->upper_margin &&
751 mode1->lower_margin == mode2->lower_margin &&
752 mode1->sync == mode2->sync &&
753 mode1->vmode == mode2->vmode);
754 }
755
756 /**
757 * fb_find_best_mode - find best matching videomode
758 * @var: pointer to struct fb_var_screeninfo
759 * @head: pointer to struct list_head of modelist
760 *
761 * RETURNS:
762 * struct fb_videomode, NULL if none found
763 *
764 * IMPORTANT:
765 * This function assumes that all modelist entries in
766 * info->modelist are valid.
767 *
768 * NOTES:
769 * Finds best matching videomode which has an equal or greater dimension than
770 * var->xres and var->yres. If more than 1 videomode is found, will return
771 * the videomode with the highest refresh rate
772 */
773 struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
774 struct list_head *head)
775 {
776 struct list_head *pos;
777 struct fb_modelist *modelist;
778 struct fb_videomode *mode, *best = NULL;
779 u32 diff = -1;
780
781 list_for_each(pos, head) {
782 u32 d;
783
784 modelist = list_entry(pos, struct fb_modelist, list);
785 mode = &modelist->mode;
786
787 if (mode->xres >= var->xres && mode->yres >= var->yres) {
788 d = (mode->xres - var->xres) +
789 (mode->yres - var->yres);
790 if (diff > d) {
791 diff = d;
792 best = mode;
793 } else if (diff == d && best &&
794 mode->refresh > best->refresh)
795 best = mode;
796 }
797 }
798 return best;
799 }
800
801 /**
802 * fb_find_nearest_mode - find closest videomode
803 *
804 * @mode: pointer to struct fb_videomode
805 * @head: pointer to modelist
806 *
807 * Finds best matching videomode, smaller or greater in dimension.
808 * If more than 1 videomode is found, will return the videomode with
809 * the closest refresh rate.
810 */
811 struct fb_videomode *fb_find_nearest_mode(struct fb_videomode *mode,
812 struct list_head *head)
813 {
814 struct list_head *pos;
815 struct fb_modelist *modelist;
816 struct fb_videomode *cmode, *best = NULL;
817 u32 diff = -1, diff_refresh = -1;
818
819 list_for_each(pos, head) {
820 u32 d;
821
822 modelist = list_entry(pos, struct fb_modelist, list);
823 cmode = &modelist->mode;
824
825 d = abs(cmode->xres - mode->xres) +
826 abs(cmode->yres - mode->yres);
827 if (diff > d) {
828 diff = d;
829 best = cmode;
830 } else if (diff == d) {
831 d = abs(cmode->refresh - mode->refresh);
832 if (diff_refresh > d) {
833 diff_refresh = d;
834 best = cmode;
835 }
836 }
837 }
838
839 return best;
840 }
841
842 /**
843 * fb_match_mode - find a videomode which exactly matches the timings in var
844 * @var: pointer to struct fb_var_screeninfo
845 * @head: pointer to struct list_head of modelist
846 *
847 * RETURNS:
848 * struct fb_videomode, NULL if none found
849 */
850 struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
851 struct list_head *head)
852 {
853 struct list_head *pos;
854 struct fb_modelist *modelist;
855 struct fb_videomode *m, mode;
856
857 fb_var_to_videomode(&mode, var);
858 list_for_each(pos, head) {
859 modelist = list_entry(pos, struct fb_modelist, list);
860 m = &modelist->mode;
861 if (fb_mode_is_equal(m, &mode))
862 return m;
863 }
864 return NULL;
865 }
866
867 /**
868 * fb_add_videomode: adds videomode entry to modelist
869 * @mode: videomode to add
870 * @head: struct list_head of modelist
871 *
872 * NOTES:
873 * Will only add unmatched mode entries
874 */
875 int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
876 {
877 struct list_head *pos;
878 struct fb_modelist *modelist;
879 struct fb_videomode *m;
880 int found = 0;
881
882 list_for_each(pos, head) {
883 modelist = list_entry(pos, struct fb_modelist, list);
884 m = &modelist->mode;
885 if (fb_mode_is_equal(m, mode)) {
886 found = 1;
887 break;
888 }
889 }
890 if (!found) {
891 modelist = kmalloc(sizeof(struct fb_modelist),
892 GFP_KERNEL);
893
894 if (!modelist)
895 return -ENOMEM;
896 modelist->mode = *mode;
897 list_add(&modelist->list, head);
898 }
899 return 0;
900 }
901
902 /**
903 * fb_delete_videomode: removed videomode entry from modelist
904 * @mode: videomode to remove
905 * @head: struct list_head of modelist
906 *
907 * NOTES:
908 * Will remove all matching mode entries
909 */
910 void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
911 {
912 struct list_head *pos, *n;
913 struct fb_modelist *modelist;
914 struct fb_videomode *m;
915
916 list_for_each_safe(pos, n, head) {
917 modelist = list_entry(pos, struct fb_modelist, list);
918 m = &modelist->mode;
919 if (fb_mode_is_equal(m, mode)) {
920 list_del(pos);
921 kfree(pos);
922 }
923 }
924 }
925
926 /**
927 * fb_destroy_modelist: destroy modelist
928 * @head: struct list_head of modelist
929 */
930 void fb_destroy_modelist(struct list_head *head)
931 {
932 struct list_head *pos, *n;
933
934 list_for_each_safe(pos, n, head) {
935 list_del(pos);
936 kfree(pos);
937 }
938 }
939
940 /**
941 * fb_videomode_to_modelist: convert mode array to mode list
942 * @modedb: array of struct fb_videomode
943 * @num: number of entries in array
944 * @head: struct list_head of modelist
945 */
946 void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
947 struct list_head *head)
948 {
949 int i;
950
951 INIT_LIST_HEAD(head);
952
953 for (i = 0; i < num; i++) {
954 if (fb_add_videomode(&modedb[i], head))
955 return;
956 }
957 }
958
959 struct fb_videomode *fb_find_best_display(struct fb_monspecs *specs,
960 struct list_head *head)
961 {
962 struct list_head *pos;
963 struct fb_modelist *modelist;
964 struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
965 int first = 0;
966
967 if (!head->prev || !head->next || list_empty(head))
968 goto finished;
969
970 /* get the first detailed mode and the very first mode */
971 list_for_each(pos, head) {
972 modelist = list_entry(pos, struct fb_modelist, list);
973 m = &modelist->mode;
974
975 if (!first) {
976 m1 = m;
977 first = 1;
978 }
979
980 if (m->flag & FB_MODE_IS_FIRST) {
981 md = m;
982 break;
983 }
984 }
985
986 /* first detailed timing is preferred */
987 if (specs->misc & FB_MISC_1ST_DETAIL) {
988 best = md;
989 goto finished;
990 }
991
992 /* find best mode based on display width and height */
993 if (specs->max_x && specs->max_y) {
994 struct fb_var_screeninfo var;
995
996 memset(&var, 0, sizeof(struct fb_var_screeninfo));
997 var.xres = (specs->max_x * 7200)/254;
998 var.yres = (specs->max_y * 7200)/254;
999 m = fb_find_best_mode(&var, head);
1000 if (m) {
1001 best = m;
1002 goto finished;
1003 }
1004 }
1005
1006 /* use first detailed mode */
1007 if (md) {
1008 best = md;
1009 goto finished;
1010 }
1011
1012 /* last resort, use the very first mode */
1013 best = m1;
1014 finished:
1015 return best;
1016 }
1017 EXPORT_SYMBOL(fb_find_best_display);
1018
1019 EXPORT_SYMBOL(fb_videomode_to_var);
1020 EXPORT_SYMBOL(fb_var_to_videomode);
1021 EXPORT_SYMBOL(fb_mode_is_equal);
1022 EXPORT_SYMBOL(fb_add_videomode);
1023 EXPORT_SYMBOL(fb_match_mode);
1024 EXPORT_SYMBOL(fb_find_best_mode);
1025 EXPORT_SYMBOL(fb_find_nearest_mode);
1026 EXPORT_SYMBOL(fb_videomode_to_modelist);
1027 EXPORT_SYMBOL(fb_find_mode);
Linux kernel - Deliverables
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