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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / video / modedb.c
blob3892222d195d448300a1c9303bd8fd45841a8eec
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/tty.h>
16 #include <linux/fb.h>
17 #include <linux/sched.h>
18
19 #undef DEBUG
20
21 #define name_matches(v, s, l) \
22 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
23 #define res_matches(v, x, y) \
24 ((v).xres == (x) && (v).yres == (y))
25
26 #ifdef DEBUG
27 #define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
28 #else
29 #define DPRINTK(fmt, args...)
30 #endif
31
32
33 const char *global_mode_option = NULL;
34
35
36 /*
37 * Standard video mode definitions (taken from XFree86)
38 */
39
40 #define DEFAULT_MODEDB_INDEX 0
41
42 static const __init struct fb_videomode modedb[] = {
43 {
44 /* 640x400 @ 70 Hz, 31.5 kHz hsync */
45 NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
46 0, FB_VMODE_NONINTERLACED
47 }, {
48 /* 640x480 @ 60 Hz, 31.5 kHz hsync */
49 NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
50 0, FB_VMODE_NONINTERLACED
51 }, {
52 /* 800x600 @ 56 Hz, 35.15 kHz hsync */
53 NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2,
54 0, FB_VMODE_NONINTERLACED
55 }, {
56 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
57 NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8,
58 0, FB_VMODE_INTERLACED
59 }, {
60 /* 640x400 @ 85 Hz, 37.86 kHz hsync */
61 NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
62 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
63 }, {
64 /* 640x480 @ 72 Hz, 36.5 kHz hsync */
65 NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3,
66 0, FB_VMODE_NONINTERLACED
67 }, {
68 /* 640x480 @ 75 Hz, 37.50 kHz hsync */
69 NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
70 0, FB_VMODE_NONINTERLACED
71 }, {
72 /* 800x600 @ 60 Hz, 37.8 kHz hsync */
73 NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
74 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
75 }, {
76 /* 640x480 @ 85 Hz, 43.27 kHz hsync */
77 NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3,
78 0, FB_VMODE_NONINTERLACED
79 }, {
80 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
81 NULL, 69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10,
82 0, FB_VMODE_INTERLACED
83 }, {
84 /* 800x600 @ 72 Hz, 48.0 kHz hsync */
85 NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
86 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
87 }, {
88 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
89 NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6,
90 0, FB_VMODE_NONINTERLACED
91 }, {
92 /* 640x480 @ 100 Hz, 53.01 kHz hsync */
93 NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6,
94 0, FB_VMODE_NONINTERLACED
95 }, {
96 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
97 NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8,
98 0, FB_VMODE_NONINTERLACED
99 }, {
100 /* 800x600 @ 85 Hz, 55.84 kHz hsync */
101 NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5,
102 0, FB_VMODE_NONINTERLACED
103 }, {
104 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
105 NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
106 0, FB_VMODE_NONINTERLACED
107 }, {
108 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
109 NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12,
110 0, FB_VMODE_INTERLACED
111 }, {
112 /* 800x600 @ 100 Hz, 64.02 kHz hsync */
113 NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6,
114 0, FB_VMODE_NONINTERLACED
115 }, {
116 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
117 NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3,
118 0, FB_VMODE_NONINTERLACED
119 }, {
120 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
121 NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10,
122 0, FB_VMODE_NONINTERLACED
123 }, {
124 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
125 NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3,
126 0, FB_VMODE_NONINTERLACED
127 }, {
128 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
129 NULL, 68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3,
130 0, FB_VMODE_NONINTERLACED
131 }, {
132 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
133 NULL, 75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3,
134 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
135 }, {
136 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
137 NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
138 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
139 }, {
140 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
141 NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6,
142 0, FB_VMODE_NONINTERLACED
143 }, {
144 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
145 NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12,
146 0, FB_VMODE_NONINTERLACED
147 }, {
148 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
149 NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8,
150 0, FB_VMODE_NONINTERLACED
151 }, {
152 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
153 NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
154 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
155 }, {
156 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
157 NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12,
158 0, FB_VMODE_NONINTERLACED
159 }, {
160 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
161 NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3,
162 0, FB_VMODE_NONINTERLACED
163 }, {
164 /* 1024x768 @ 100Hz, 80.21 kHz hsync */
165 NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10,
166 0, FB_VMODE_NONINTERLACED
167 }, {
168 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
169 NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3,
170 0, FB_VMODE_NONINTERLACED
171 }, {
172 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
173 NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
174 0, FB_VMODE_NONINTERLACED
175 }, {
176 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
177 NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19,
178 0, FB_VMODE_NONINTERLACED
179 }, {
180 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
181 NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
182 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
183 }, {
184 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
185 NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
186 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
187 }, {
188 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
189 NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
190 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
191 }, {
192 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
193 NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15,
194 0, FB_VMODE_NONINTERLACED
195 }, {
196 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
197 NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
198 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
199 }, {
200 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
201 NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
202 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
203 }, {
204 /* 512x384 @ 78 Hz, 31.50 kHz hsync */
205 NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3,
206 0, FB_VMODE_NONINTERLACED
207 }, {
208 /* 512x384 @ 85 Hz, 34.38 kHz hsync */
209 NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3,
210 0, FB_VMODE_NONINTERLACED
211 }, {
212 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
213 NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1,
214 0, FB_VMODE_DOUBLE
215 }, {
216 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
217 NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1,
218 0, FB_VMODE_DOUBLE
219 }, {
220 /* 320x240 @ 72 Hz, 36.5 kHz hsync */
221 NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2,
222 0, FB_VMODE_DOUBLE
223 }, {
224 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
225 NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1,
226 0, FB_VMODE_DOUBLE
227 }, {
228 /* 400x300 @ 60 Hz, 37.8 kHz hsync */
229 NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2,
230 0, FB_VMODE_DOUBLE
231 }, {
232 /* 400x300 @ 72 Hz, 48.0 kHz hsync */
233 NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3,
234 0, FB_VMODE_DOUBLE
235 }, {
236 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
237 NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1,
238 0, FB_VMODE_DOUBLE
239 }, {
240 /* 480x300 @ 60 Hz, 37.8 kHz hsync */
241 NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2,
242 0, FB_VMODE_DOUBLE
243 }, {
244 /* 480x300 @ 63 Hz, 39.6 kHz hsync */
245 NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2,
246 0, FB_VMODE_DOUBLE
247 }, {
248 /* 480x300 @ 72 Hz, 48.0 kHz hsync */
249 NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3,
250 0, FB_VMODE_DOUBLE
251 },
252 };
253
254 #ifdef CONFIG_FB_MODE_HELPERS
255 const struct fb_videomode vesa_modes[] = {
256 /* 0 640x350-85 VESA */
257 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
258 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
259 /* 1 640x400-85 VESA */
260 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
261 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
262 /* 2 720x400-85 VESA */
263 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
264 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
265 /* 3 640x480-60 VESA */
266 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
267 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
268 /* 4 640x480-72 VESA */
269 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
270 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
271 /* 5 640x480-75 VESA */
272 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
273 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
274 /* 6 640x480-85 VESA */
275 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
276 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
277 /* 7 800x600-56 VESA */
278 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
279 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
280 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
281 /* 8 800x600-60 VESA */
282 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
283 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
284 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
285 /* 9 800x600-72 VESA */
286 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
287 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
288 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
289 /* 10 800x600-75 VESA */
290 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
291 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
292 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
293 /* 11 800x600-85 VESA */
294 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
295 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
296 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
297 /* 12 1024x768i-43 VESA */
298 { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
299 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
300 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
301 /* 13 1024x768-60 VESA */
302 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
303 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
304 /* 14 1024x768-70 VESA */
305 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
306 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
307 /* 15 1024x768-75 VESA */
308 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
309 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
310 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
311 /* 16 1024x768-85 VESA */
312 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
313 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
314 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
315 /* 17 1152x864-75 VESA */
316 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
317 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
318 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
319 /* 18 1280x960-60 VESA */
320 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
321 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
322 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
323 /* 19 1280x960-85 VESA */
324 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
326 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
327 /* 20 1280x1024-60 VESA */
328 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
329 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
330 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
331 /* 21 1280x1024-75 VESA */
332 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
335 /* 22 1280x1024-85 VESA */
336 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
339 /* 23 1600x1200-60 VESA */
340 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
342 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
343 /* 24 1600x1200-65 VESA */
344 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
345 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
346 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
347 /* 25 1600x1200-70 VESA */
348 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
349 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
350 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
351 /* 26 1600x1200-75 VESA */
352 { NULL, 75, 1600, 1200, 4938, 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 /* 27 1600x1200-85 VESA */
356 { NULL, 85, 1600, 1200, 4357, 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 /* 28 1792x1344-60 VESA */
360 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
361 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
362 /* 29 1792x1344-75 VESA */
363 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
364 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
365 /* 30 1856x1392-60 VESA */
366 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
367 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
368 /* 31 1856x1392-75 VESA */
369 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
370 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
371 /* 32 1920x1440-60 VESA */
372 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
373 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
374 /* 33 1920x1440-75 VESA */
375 { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
376 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
377 };
378 EXPORT_SYMBOL(vesa_modes);
379 #endif /* CONFIG_FB_MODE_HELPERS */
380
381 static int my_atoi(const char *name)
382 {
383 int val = 0;
384
385 for (;; name++) {
386 switch (*name) {
387 case '0'...'9':
388 val = 10*val+(*name-'0');
389 break;
390 default:
391 return val;
392 }
393 }
394 }
395
396 /**
397 * fb_try_mode - test a video mode
398 * @var: frame buffer user defined part of display
399 * @info: frame buffer info structure
400 * @mode: frame buffer video mode structure
401 * @bpp: color depth in bits per pixel
402 *
403 * Tries a video mode to test it's validity for device @info.
404 *
405 * Returns 1 on success.
406 *
407 */
408
409 int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
410 const struct fb_videomode *mode, unsigned int bpp)
411 {
412 int err = 0;
413
414 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
415 mode->xres, mode->yres, bpp, mode->refresh);
416 var->xres = mode->xres;
417 var->yres = mode->yres;
418 var->xres_virtual = mode->xres;
419 var->yres_virtual = mode->yres;
420 var->xoffset = 0;
421 var->yoffset = 0;
422 var->bits_per_pixel = bpp;
423 var->activate |= FB_ACTIVATE_TEST;
424 var->pixclock = mode->pixclock;
425 var->left_margin = mode->left_margin;
426 var->right_margin = mode->right_margin;
427 var->upper_margin = mode->upper_margin;
428 var->lower_margin = mode->lower_margin;
429 var->hsync_len = mode->hsync_len;
430 var->vsync_len = mode->vsync_len;
431 var->sync = mode->sync;
432 var->vmode = mode->vmode;
433 if (info->fbops->fb_check_var)
434 err = info->fbops->fb_check_var(var, info);
435 var->activate &= ~FB_ACTIVATE_TEST;
436 return err;
437 }
438
439 /**
440 * fb_find_mode - finds a valid video mode
441 * @var: frame buffer user defined part of display
442 * @info: frame buffer info structure
443 * @mode_option: string video mode to find
444 * @db: video mode database
445 * @dbsize: size of @db
446 * @default_mode: default video mode to fall back to
447 * @default_bpp: default color depth in bits per pixel
448 *
449 * Finds a suitable video mode, starting with the specified mode
450 * in @mode_option with fallback to @default_mode. If
451 * @default_mode fails, all modes in the video mode database will
452 * be tried.
453 *
454 * Valid mode specifiers for @mode_option:
455 *
456 * <xres>x<yres>[-<bpp>][@<refresh>] or
457 * <name>[-<bpp>][@<refresh>]
458 *
459 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
460 * <name> a string.
461 *
462 * NOTE: The passed struct @var is _not_ cleared! This allows you
463 * to supply values for e.g. the grayscale and accel_flags fields.
464 *
465 * Returns zero for failure, 1 if using specified @mode_option,
466 * 2 if using specified @mode_option with an ignored refresh rate,
467 * 3 if default mode is used, 4 if fall back to any valid mode.
468 *
469 */
470
471 int fb_find_mode(struct fb_var_screeninfo *var,
472 struct fb_info *info, const char *mode_option,
473 const struct fb_videomode *db, unsigned int dbsize,
474 const struct fb_videomode *default_mode,
475 unsigned int default_bpp)
476 {
477 int i, j;
478
479 /* Set up defaults */
480 if (!db) {
481 db = modedb;
482 dbsize = sizeof(modedb)/sizeof(*modedb);
483 }
484 if (!default_mode)
485 default_mode = &modedb[DEFAULT_MODEDB_INDEX];
486 if (!default_bpp)
487 default_bpp = 8;
488
489 /* Did the user specify a video mode? */
490 if (mode_option || (mode_option = global_mode_option)) {
491 const char *name = mode_option;
492 unsigned int namelen = strlen(name);
493 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
494 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
495 int yres_specified = 0;
496 u32 best = -1, diff = -1;
497
498 for (i = namelen-1; i >= 0; i--) {
499 switch (name[i]) {
500 case '@':
501 namelen = i;
502 if (!refresh_specified && !bpp_specified &&
503 !yres_specified) {
504 refresh = my_atoi(&name[i+1]);
505 refresh_specified = 1;
506 } else
507 goto done;
508 break;
509 case '-':
510 namelen = i;
511 if (!bpp_specified && !yres_specified) {
512 bpp = my_atoi(&name[i+1]);
513 bpp_specified = 1;
514 } else
515 goto done;
516 break;
517 case 'x':
518 if (!yres_specified) {
519 yres = my_atoi(&name[i+1]);
520 yres_specified = 1;
521 } else
522 goto done;
523 break;
524 case '0'...'9':
525 break;
526 default:
527 goto done;
528 }
529 }
530 if (i < 0 && yres_specified) {
531 xres = my_atoi(name);
532 res_specified = 1;
533 }
534 done:
535 for (i = refresh_specified; i >= 0; i--) {
536 DPRINTK("Trying specified video mode%s %ix%i\n",
537 i ? "" : " (ignoring refresh rate)", xres, yres);
538 for (j = 0; j < dbsize; j++)
539 if ((name_matches(db[j], name, namelen) ||
540 (res_specified && res_matches(db[j], xres, yres))) &&
541 (!i || db[j].refresh == refresh) &&
542 !fb_try_mode(var, info, &db[j], bpp))
543 return 2-i;
544 }
545 DPRINTK("Trying best-fit modes\n");
546 for (i = 0; i < dbsize; i++) {
547 if (xres <= db[i].xres && yres <= db[i].yres) {
548 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
549 if (!fb_try_mode(var, info, &db[i], bpp)) {
550 if (diff > (db[i].xres - xres) + (db[i].yres - yres)) {
551 diff = (db[i].xres - xres) + (db[i].yres - yres);
552 best = i;
553 }
554 }
555 }
556 }
557 if (best != -1) {
558 fb_try_mode(var, info, &db[best], bpp);
559 return 5;
560 }
561 }
562
563 DPRINTK("Trying default video mode\n");
564 if (!fb_try_mode(var, info, default_mode, default_bpp))
565 return 3;
566
567 DPRINTK("Trying all modes\n");
568 for (i = 0; i < dbsize; i++)
569 if (!fb_try_mode(var, info, &db[i], default_bpp))
570 return 4;
571
572 DPRINTK("No valid mode found\n");
573 return 0;
574 }
575
576 /**
577 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
578 * @mode: pointer to struct fb_videomode
579 * @var: pointer to struct fb_var_screeninfo
580 */
581 void fb_var_to_videomode(struct fb_videomode *mode,
582 struct fb_var_screeninfo *var)
583 {
584 u32 pixclock, hfreq, htotal, vtotal;
585
586 mode->name = NULL;
587 mode->xres = var->xres;
588 mode->yres = var->yres;
589 mode->pixclock = var->pixclock;
590 mode->hsync_len = var->hsync_len;
591 mode->vsync_len = var->vsync_len;
592 mode->left_margin = var->left_margin;
593 mode->right_margin = var->right_margin;
594 mode->upper_margin = var->upper_margin;
595 mode->lower_margin = var->lower_margin;
596 mode->sync = var->sync;
597 mode->vmode = var->vmode & FB_VMODE_MASK;
598 mode->flag = FB_MODE_IS_FROM_VAR;
599 if (!var->pixclock)
600 return;
601
602 pixclock = PICOS2KHZ(var->pixclock) * 1000;
603
604 htotal = var->xres + var->right_margin + var->hsync_len +
605 var->left_margin;
606 vtotal = var->yres + var->lower_margin + var->vsync_len +
607 var->upper_margin;
608
609 if (var->vmode & FB_VMODE_INTERLACED)
610 vtotal /= 2;
611 if (var->vmode & FB_VMODE_DOUBLE)
612 vtotal *= 2;
613
614 hfreq = pixclock/htotal;
615 mode->refresh = hfreq/vtotal;
616 }
617
618 /**
619 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
620 * @var: pointer to struct fb_var_screeninfo
621 * @mode: pointer to struct fb_videomode
622 */
623 void fb_videomode_to_var(struct fb_var_screeninfo *var,
624 struct fb_videomode *mode)
625 {
626 var->xres = mode->xres;
627 var->yres = mode->yres;
628 var->pixclock = mode->pixclock;
629 var->left_margin = mode->left_margin;
630 var->hsync_len = mode->hsync_len;
631 var->vsync_len = mode->vsync_len;
632 var->right_margin = mode->right_margin;
633 var->upper_margin = mode->upper_margin;
634 var->lower_margin = mode->lower_margin;
635 var->sync = mode->sync;
636 var->vmode = mode->vmode & FB_VMODE_MASK;
637 }
638
639 /**
640 * fb_mode_is_equal - compare 2 videomodes
641 * @mode1: first videomode
642 * @mode2: second videomode
643 *
644 * RETURNS:
645 * 1 if equal, 0 if not
646 */
647 int fb_mode_is_equal(struct fb_videomode *mode1,
648 struct fb_videomode *mode2)
649 {
650 return (mode1->xres == mode2->xres &&
651 mode1->yres == mode2->yres &&
652 mode1->pixclock == mode2->pixclock &&
653 mode1->hsync_len == mode2->hsync_len &&
654 mode1->vsync_len == mode2->vsync_len &&
655 mode1->left_margin == mode2->left_margin &&
656 mode1->right_margin == mode2->right_margin &&
657 mode1->upper_margin == mode2->upper_margin &&
658 mode1->lower_margin == mode2->lower_margin &&
659 mode1->sync == mode2->sync &&
660 mode1->vmode == mode2->vmode);
661 }
662
663 /**
664 * fb_find_best_mode - find best matching videomode
665 * @var: pointer to struct fb_var_screeninfo
666 * @head: pointer to struct list_head of modelist
667 *
668 * RETURNS:
669 * struct fb_videomode, NULL if none found
670 *
671 * IMPORTANT:
672 * This function assumes that all modelist entries in
673 * info->modelist are valid.
674 *
675 * NOTES:
676 * Finds best matching videomode which has an equal or greater dimension than
677 * var->xres and var->yres. If more than 1 videomode is found, will return
678 * the videomode with the highest refresh rate
679 */
680 struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
681 struct list_head *head)
682 {
683 struct list_head *pos;
684 struct fb_modelist *modelist;
685 struct fb_videomode *mode, *best = NULL;
686 u32 diff = -1;
687
688 list_for_each(pos, head) {
689 u32 d;
690
691 modelist = list_entry(pos, struct fb_modelist, list);
692 mode = &modelist->mode;
693
694 if (mode->xres >= var->xres && mode->yres >= var->yres) {
695 d = (mode->xres - var->xres) +
696 (mode->yres - var->yres);
697 if (diff > d) {
698 diff = d;
699 best = mode;
700 } else if (diff == d && mode->refresh > best->refresh)
701 best = mode;
702 }
703 }
704 return best;
705 }
706
707 /**
708 * fb_match_mode - find a videomode which exactly matches the timings in var
709 * @var: pointer to struct fb_var_screeninfo
710 * @head: pointer to struct list_head of modelist
711 *
712 * RETURNS:
713 * struct fb_videomode, NULL if none found
714 */
715 struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
716 struct list_head *head)
717 {
718 struct list_head *pos;
719 struct fb_modelist *modelist;
720 struct fb_videomode *m, mode;
721
722 fb_var_to_videomode(&mode, var);
723 list_for_each(pos, head) {
724 modelist = list_entry(pos, struct fb_modelist, list);
725 m = &modelist->mode;
726 if (fb_mode_is_equal(m, &mode))
727 return m;
728 }
729 return NULL;
730 }
731
732 /**
733 * fb_add_videomode: adds videomode entry to modelist
734 * @mode: videomode to add
735 * @head: struct list_head of modelist
736 *
737 * NOTES:
738 * Will only add unmatched mode entries
739 */
740 int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
741 {
742 struct list_head *pos;
743 struct fb_modelist *modelist;
744 struct fb_videomode *m;
745 int found = 0;
746
747 list_for_each(pos, head) {
748 modelist = list_entry(pos, struct fb_modelist, list);
749 m = &modelist->mode;
750 if (fb_mode_is_equal(m, mode)) {
751 found = 1;
752 break;
753 }
754 }
755 if (!found) {
756 modelist = kmalloc(sizeof(struct fb_modelist),
757 GFP_KERNEL);
758
759 if (!modelist)
760 return -ENOMEM;
761 modelist->mode = *mode;
762 list_add(&modelist->list, head);
763 }
764 return 0;
765 }
766
767 /**
768 * fb_delete_videomode: removed videomode entry from modelist
769 * @mode: videomode to remove
770 * @head: struct list_head of modelist
771 *
772 * NOTES:
773 * Will remove all matching mode entries
774 */
775 void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
776 {
777 struct list_head *pos, *n;
778 struct fb_modelist *modelist;
779 struct fb_videomode *m;
780
781 list_for_each_safe(pos, n, head) {
782 modelist = list_entry(pos, struct fb_modelist, list);
783 m = &modelist->mode;
784 if (fb_mode_is_equal(m, mode)) {
785 list_del(pos);
786 kfree(pos);
787 }
788 }
789 }
790
791 /**
792 * fb_destroy_modelist: destroy modelist
793 * @head: struct list_head of modelist
794 */
795 void fb_destroy_modelist(struct list_head *head)
796 {
797 struct list_head *pos, *n;
798
799 list_for_each_safe(pos, n, head) {
800 list_del(pos);
801 kfree(pos);
802 }
803 }
804
805 /**
806 * fb_videomode_to_modelist: convert mode array to mode list
807 * @modedb: array of struct fb_videomode
808 * @num: number of entries in array
809 * @head: struct list_head of modelist
810 */
811 void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
812 struct list_head *head)
813 {
814 int i;
815
816 INIT_LIST_HEAD(head);
817
818 for (i = 0; i < num; i++) {
819 if (fb_add_videomode(&modedb[i], head))
820 return;
821 }
822 }
823
824 EXPORT_SYMBOL(fb_videomode_to_var);
825 EXPORT_SYMBOL(fb_var_to_videomode);
826 EXPORT_SYMBOL(fb_mode_is_equal);
827 EXPORT_SYMBOL(fb_add_videomode);
828 EXPORT_SYMBOL(fb_delete_videomode);
829 EXPORT_SYMBOL(fb_destroy_modelist);
830 EXPORT_SYMBOL(fb_match_mode);
831 EXPORT_SYMBOL(fb_find_best_mode);
832 EXPORT_SYMBOL(fb_videomode_to_modelist);
833 EXPORT_SYMBOL(fb_find_mode);
MOXA 2.6.9 from sdlinux-moxaart.tgz