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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / modedb.c
blobfbf659b6dab01e530acdc4d8e9d544bad909e5fa
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("modedb %s: " fmt, __FUNCTION__ , ## args)
28 #else
29 #define DPRINTK(fmt, args...)
30 #endif
31
32 const char *global_mode_option;
33
34 /*
35 * Standard video mode definitions (taken from XFree86)
36 */
37
38 #define DEFAULT_MODEDB_INDEX 0
39
40 static const struct fb_videomode modedb[] = {
41 {
42 /* 640x400 @ 70 Hz, 31.5 kHz hsync */
43 NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
44 0, FB_VMODE_NONINTERLACED
45 }, {
46 /* 640x480 @ 60 Hz, 31.5 kHz hsync */
47 NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
48 0, FB_VMODE_NONINTERLACED
49 }, {
50 /* 800x600 @ 56 Hz, 35.15 kHz hsync */
51 NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2,
52 0, FB_VMODE_NONINTERLACED
53 }, {
54 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
55 NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8,
56 0, FB_VMODE_INTERLACED
57 }, {
58 /* 640x400 @ 85 Hz, 37.86 kHz hsync */
59 NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
60 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
61 }, {
62 /* 640x480 @ 72 Hz, 36.5 kHz hsync */
63 NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3,
64 0, FB_VMODE_NONINTERLACED
65 }, {
66 /* 640x480 @ 75 Hz, 37.50 kHz hsync */
67 NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
68 0, FB_VMODE_NONINTERLACED
69 }, {
70 /* 800x600 @ 60 Hz, 37.8 kHz hsync */
71 NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
72 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
73 }, {
74 /* 640x480 @ 85 Hz, 43.27 kHz hsync */
75 NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3,
76 0, FB_VMODE_NONINTERLACED
77 }, {
78 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
79 NULL, 69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10,
80 0, FB_VMODE_INTERLACED
81 }, {
82 /* 800x600 @ 72 Hz, 48.0 kHz hsync */
83 NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
84 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
85 }, {
86 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
87 NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6,
88 0, FB_VMODE_NONINTERLACED
89 }, {
90 /* 640x480 @ 100 Hz, 53.01 kHz hsync */
91 NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6,
92 0, FB_VMODE_NONINTERLACED
93 }, {
94 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
95 NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8,
96 0, FB_VMODE_NONINTERLACED
97 }, {
98 /* 800x600 @ 85 Hz, 55.84 kHz hsync */
99 NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5,
100 0, FB_VMODE_NONINTERLACED
101 }, {
102 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
103 NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
104 0, FB_VMODE_NONINTERLACED
105 }, {
106 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
107 NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12,
108 0, FB_VMODE_INTERLACED
109 }, {
110 /* 800x600 @ 100 Hz, 64.02 kHz hsync */
111 NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6,
112 0, FB_VMODE_NONINTERLACED
113 }, {
114 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
115 NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3,
116 0, FB_VMODE_NONINTERLACED
117 }, {
118 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
119 NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10,
120 0, FB_VMODE_NONINTERLACED
121 }, {
122 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
123 NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3,
124 0, FB_VMODE_NONINTERLACED
125 }, {
126 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
127 NULL, 68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3,
128 0, FB_VMODE_NONINTERLACED
129 }, {
130 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
131 NULL, 75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3,
132 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
133 }, {
134 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
135 NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
136 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
137 }, {
138 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
139 NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6,
140 0, FB_VMODE_NONINTERLACED
141 }, {
142 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
143 NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12,
144 0, FB_VMODE_NONINTERLACED
145 }, {
146 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
147 NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8,
148 0, FB_VMODE_NONINTERLACED
149 }, {
150 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
151 NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
152 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
153 }, {
154 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
155 NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12,
156 0, FB_VMODE_NONINTERLACED
157 }, {
158 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
159 NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3,
160 0, FB_VMODE_NONINTERLACED
161 }, {
162 /* 1024x768 @ 100Hz, 80.21 kHz hsync */
163 NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10,
164 0, FB_VMODE_NONINTERLACED
165 }, {
166 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
167 NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3,
168 0, FB_VMODE_NONINTERLACED
169 }, {
170 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
171 NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
172 0, FB_VMODE_NONINTERLACED
173 }, {
174 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
175 NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19,
176 0, FB_VMODE_NONINTERLACED
177 }, {
178 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
179 NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
180 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
181 }, {
182 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
183 NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
184 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
185 }, {
186 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
187 NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
188 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
189 }, {
190 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
191 NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15,
192 0, FB_VMODE_NONINTERLACED
193 }, {
194 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
195 NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
196 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
197 }, {
198 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
199 NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
200 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
201 }, {
202 /* 512x384 @ 78 Hz, 31.50 kHz hsync */
203 NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3,
204 0, FB_VMODE_NONINTERLACED
205 }, {
206 /* 512x384 @ 85 Hz, 34.38 kHz hsync */
207 NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3,
208 0, FB_VMODE_NONINTERLACED
209 }, {
210 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
211 NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1,
212 0, FB_VMODE_DOUBLE
213 }, {
214 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
215 NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1,
216 0, FB_VMODE_DOUBLE
217 }, {
218 /* 320x240 @ 72 Hz, 36.5 kHz hsync */
219 NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2,
220 0, FB_VMODE_DOUBLE
221 }, {
222 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
223 NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1,
224 0, FB_VMODE_DOUBLE
225 }, {
226 /* 400x300 @ 60 Hz, 37.8 kHz hsync */
227 NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2,
228 0, FB_VMODE_DOUBLE
229 }, {
230 /* 400x300 @ 72 Hz, 48.0 kHz hsync */
231 NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3,
232 0, FB_VMODE_DOUBLE
233 }, {
234 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
235 NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1,
236 0, FB_VMODE_DOUBLE
237 }, {
238 /* 480x300 @ 60 Hz, 37.8 kHz hsync */
239 NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2,
240 0, FB_VMODE_DOUBLE
241 }, {
242 /* 480x300 @ 63 Hz, 39.6 kHz hsync */
243 NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2,
244 0, FB_VMODE_DOUBLE
245 }, {
246 /* 480x300 @ 72 Hz, 48.0 kHz hsync */
247 NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3,
248 0, FB_VMODE_DOUBLE
249 },
250 };
251
252 #ifdef CONFIG_FB_MODE_HELPERS
253 const struct fb_videomode vesa_modes[] = {
254 /* 0 640x350-85 VESA */
255 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
256 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
257 /* 1 640x400-85 VESA */
258 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
259 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
260 /* 2 720x400-85 VESA */
261 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
262 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
263 /* 3 640x480-60 VESA */
264 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
265 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
266 /* 4 640x480-72 VESA */
267 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
268 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
269 /* 5 640x480-75 VESA */
270 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
271 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
272 /* 6 640x480-85 VESA */
273 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
274 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
275 /* 7 800x600-56 VESA */
276 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
277 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
278 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
279 /* 8 800x600-60 VESA */
280 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
281 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
282 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
283 /* 9 800x600-72 VESA */
284 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
285 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
286 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
287 /* 10 800x600-75 VESA */
288 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
289 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
290 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
291 /* 11 800x600-85 VESA */
292 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
293 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
294 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
295 /* 12 1024x768i-43 VESA */
296 { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
297 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
298 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
299 /* 13 1024x768-60 VESA */
300 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
301 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
302 /* 14 1024x768-70 VESA */
303 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
304 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
305 /* 15 1024x768-75 VESA */
306 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
307 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
308 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
309 /* 16 1024x768-85 VESA */
310 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
311 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
312 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
313 /* 17 1152x864-75 VESA */
314 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
315 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
316 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
317 /* 18 1280x960-60 VESA */
318 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
319 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
320 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
321 /* 19 1280x960-85 VESA */
322 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
323 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
324 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
325 /* 20 1280x1024-60 VESA */
326 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
327 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
328 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
329 /* 21 1280x1024-75 VESA */
330 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
331 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
332 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
333 /* 22 1280x1024-85 VESA */
334 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
335 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
336 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
337 /* 23 1600x1200-60 VESA */
338 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
339 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
340 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
341 /* 24 1600x1200-65 VESA */
342 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
343 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
344 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
345 /* 25 1600x1200-70 VESA */
346 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
347 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
348 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
349 /* 26 1600x1200-75 VESA */
350 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
351 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
352 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
353 /* 27 1600x1200-85 VESA */
354 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
355 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
356 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
357 /* 28 1792x1344-60 VESA */
358 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
359 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
360 /* 29 1792x1344-75 VESA */
361 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
362 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
363 /* 30 1856x1392-60 VESA */
364 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
365 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
366 /* 31 1856x1392-75 VESA */
367 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
368 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
369 /* 32 1920x1440-60 VESA */
370 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
371 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
372 /* 33 1920x1440-75 VESA */
373 { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
374 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
375 };
376 EXPORT_SYMBOL(vesa_modes);
377 #endif /* CONFIG_FB_MODE_HELPERS */
378
379 static int my_atoi(const char *name)
380 {
381 int val = 0;
382
383 for (;; name++) {
384 switch (*name) {
385 case '0'...'9':
386 val = 10*val+(*name-'0');
387 break;
388 default:
389 return val;
390 }
391 }
392 }
393
394 /**
395 * fb_try_mode - test a video mode
396 * @var: frame buffer user defined part of display
397 * @info: frame buffer info structure
398 * @mode: frame buffer video mode structure
399 * @bpp: color depth in bits per pixel
400 *
401 * Tries a video mode to test it's validity for device @info.
402 *
403 * Returns 1 on success.
404 *
405 */
406
407 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
408 const struct fb_videomode *mode, unsigned int bpp)
409 {
410 int err = 0;
411
412 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
413 mode->xres, mode->yres, bpp, mode->refresh);
414 var->xres = mode->xres;
415 var->yres = mode->yres;
416 var->xres_virtual = mode->xres;
417 var->yres_virtual = mode->yres;
418 var->xoffset = 0;
419 var->yoffset = 0;
420 var->bits_per_pixel = bpp;
421 var->activate |= FB_ACTIVATE_TEST;
422 var->pixclock = mode->pixclock;
423 var->left_margin = mode->left_margin;
424 var->right_margin = mode->right_margin;
425 var->upper_margin = mode->upper_margin;
426 var->lower_margin = mode->lower_margin;
427 var->hsync_len = mode->hsync_len;
428 var->vsync_len = mode->vsync_len;
429 var->sync = mode->sync;
430 var->vmode = mode->vmode;
431 if (info->fbops->fb_check_var)
432 err = info->fbops->fb_check_var(var, info);
433 var->activate &= ~FB_ACTIVATE_TEST;
434 return err;
435 }
436
437 /**
438 * fb_find_mode - finds a valid video mode
439 * @var: frame buffer user defined part of display
440 * @info: frame buffer info structure
441 * @mode_option: string video mode to find
442 * @db: video mode database
443 * @dbsize: size of @db
444 * @default_mode: default video mode to fall back to
445 * @default_bpp: default color depth in bits per pixel
446 *
447 * Finds a suitable video mode, starting with the specified mode
448 * in @mode_option with fallback to @default_mode. If
449 * @default_mode fails, all modes in the video mode database will
450 * be tried.
451 *
452 * Valid mode specifiers for @mode_option:
453 *
454 * <xres>x<yres>[-<bpp>][@<refresh>] or
455 * <name>[-<bpp>][@<refresh>]
456 *
457 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
458 * <name> a string.
459 *
460 * NOTE: The passed struct @var is _not_ cleared! This allows you
461 * to supply values for e.g. the grayscale and accel_flags fields.
462 *
463 * Returns zero for failure, 1 if using specified @mode_option,
464 * 2 if using specified @mode_option with an ignored refresh rate,
465 * 3 if default mode is used, 4 if fall back to any valid mode.
466 *
467 */
468
469 int fb_find_mode(struct fb_var_screeninfo *var,
470 struct fb_info *info, const char *mode_option,
471 const struct fb_videomode *db, unsigned int dbsize,
472 const struct fb_videomode *default_mode,
473 unsigned int default_bpp)
474 {
475 int i;
476
477 /* Set up defaults */
478 if (!db) {
479 db = modedb;
480 dbsize = sizeof(modedb)/sizeof(*modedb);
481 }
482 if (!default_mode)
483 default_mode = &modedb[DEFAULT_MODEDB_INDEX];
484 if (!default_bpp)
485 default_bpp = 8;
486
487 /* Did the user specify a video mode? */
488 if (mode_option || (mode_option = global_mode_option)) {
489 const char *name = mode_option;
490 unsigned int namelen = strlen(name);
491 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
492 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
493 int yres_specified = 0;
494 u32 best, diff;
495
496 for (i = namelen-1; i >= 0; i--) {
497 switch (name[i]) {
498 case '@':
499 namelen = i;
500 if (!refresh_specified && !bpp_specified &&
501 !yres_specified) {
502 refresh = my_atoi(&name[i+1]);
503 refresh_specified = 1;
504 } else
505 goto done;
506 break;
507 case '-':
508 namelen = i;
509 if (!bpp_specified && !yres_specified) {
510 bpp = my_atoi(&name[i+1]);
511 bpp_specified = 1;
512 } else
513 goto done;
514 break;
515 case 'x':
516 if (!yres_specified) {
517 yres = my_atoi(&name[i+1]);
518 yres_specified = 1;
519 } else
520 goto done;
521 break;
522 case '0'...'9':
523 break;
524 default:
525 goto done;
526 }
527 }
528 if (i < 0 && yres_specified) {
529 xres = my_atoi(name);
530 res_specified = 1;
531 }
532 done:
533 DPRINTK("Trying specified video mode%s %ix%i\n",
534 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
535
536 diff = refresh;
537 best = -1;
538 for (i = 0; i < dbsize; i++) {
539 if ((name_matches(db[i], name, namelen) &&
540 !fb_try_mode(var, info, &db[i], bpp)))
541 return 1;
542 if (res_specified && res_matches(db[i], xres, yres)) {
543 if(!fb_try_mode(var, info, &db[i], bpp)) {
544 if(!refresh_specified || db[i].refresh == refresh)
545 return 1;
546 else {
547 if(diff > abs(db[i].refresh - refresh)) {
548 diff = abs(db[i].refresh - refresh);
549 best = i;
550 }
551 }
552 }
553 }
554 }
555 if (best != -1) {
556 fb_try_mode(var, info, &db[best], bpp);
557 return 2;
558 }
559
560 diff = xres + yres;
561 best = -1;
562 DPRINTK("Trying best-fit modes\n");
563 for (i = 0; i < dbsize; i++) {
564 if (xres <= db[i].xres && yres <= db[i].yres) {
565 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
566 if (!fb_try_mode(var, info, &db[i], bpp)) {
567 if (diff > (db[i].xres - xres) + (db[i].yres - yres)) {
568 diff = (db[i].xres - xres) + (db[i].yres - yres);
569 best = i;
570 }
571 }
572 }
573 }
574 if (best != -1) {
575 fb_try_mode(var, info, &db[best], bpp);
576 return 5;
577 }
578 }
579
580 DPRINTK("Trying default video mode\n");
581 if (!fb_try_mode(var, info, default_mode, default_bpp))
582 return 3;
583
584 DPRINTK("Trying all modes\n");
585 for (i = 0; i < dbsize; i++)
586 if (!fb_try_mode(var, info, &db[i], default_bpp))
587 return 4;
588
589 DPRINTK("No valid mode found\n");
590 return 0;
591 }
592
593 /**
594 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
595 * @mode: pointer to struct fb_videomode
596 * @var: pointer to struct fb_var_screeninfo
597 */
598 void fb_var_to_videomode(struct fb_videomode *mode,
599 struct fb_var_screeninfo *var)
600 {
601 u32 pixclock, hfreq, htotal, vtotal;
602
603 mode->name = NULL;
604 mode->xres = var->xres;
605 mode->yres = var->yres;
606 mode->pixclock = var->pixclock;
607 mode->hsync_len = var->hsync_len;
608 mode->vsync_len = var->vsync_len;
609 mode->left_margin = var->left_margin;
610 mode->right_margin = var->right_margin;
611 mode->upper_margin = var->upper_margin;
612 mode->lower_margin = var->lower_margin;
613 mode->sync = var->sync;
614 mode->vmode = var->vmode & FB_VMODE_MASK;
615 mode->flag = FB_MODE_IS_FROM_VAR;
616 if (!var->pixclock)
617 return;
618
619 pixclock = PICOS2KHZ(var->pixclock) * 1000;
620
621 htotal = var->xres + var->right_margin + var->hsync_len +
622 var->left_margin;
623 vtotal = var->yres + var->lower_margin + var->vsync_len +
624 var->upper_margin;
625
626 if (var->vmode & FB_VMODE_INTERLACED)
627 vtotal /= 2;
628 if (var->vmode & FB_VMODE_DOUBLE)
629 vtotal *= 2;
630
631 hfreq = pixclock/htotal;
632 mode->refresh = hfreq/vtotal;
633 }
634
635 /**
636 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
637 * @var: pointer to struct fb_var_screeninfo
638 * @mode: pointer to struct fb_videomode
639 */
640 void fb_videomode_to_var(struct fb_var_screeninfo *var,
641 struct fb_videomode *mode)
642 {
643 var->xres = mode->xres;
644 var->yres = mode->yres;
645 var->pixclock = mode->pixclock;
646 var->left_margin = mode->left_margin;
647 var->hsync_len = mode->hsync_len;
648 var->vsync_len = mode->vsync_len;
649 var->right_margin = mode->right_margin;
650 var->upper_margin = mode->upper_margin;
651 var->lower_margin = mode->lower_margin;
652 var->sync = mode->sync;
653 var->vmode = mode->vmode & FB_VMODE_MASK;
654 }
655
656 /**
657 * fb_mode_is_equal - compare 2 videomodes
658 * @mode1: first videomode
659 * @mode2: second videomode
660 *
661 * RETURNS:
662 * 1 if equal, 0 if not
663 */
664 int fb_mode_is_equal(struct fb_videomode *mode1,
665 struct fb_videomode *mode2)
666 {
667 return (mode1->xres == mode2->xres &&
668 mode1->yres == mode2->yres &&
669 mode1->pixclock == mode2->pixclock &&
670 mode1->hsync_len == mode2->hsync_len &&
671 mode1->vsync_len == mode2->vsync_len &&
672 mode1->left_margin == mode2->left_margin &&
673 mode1->right_margin == mode2->right_margin &&
674 mode1->upper_margin == mode2->upper_margin &&
675 mode1->lower_margin == mode2->lower_margin &&
676 mode1->sync == mode2->sync &&
677 mode1->vmode == mode2->vmode);
678 }
679
680 /**
681 * fb_find_best_mode - find best matching videomode
682 * @var: pointer to struct fb_var_screeninfo
683 * @head: pointer to struct list_head of modelist
684 *
685 * RETURNS:
686 * struct fb_videomode, NULL if none found
687 *
688 * IMPORTANT:
689 * This function assumes that all modelist entries in
690 * info->modelist are valid.
691 *
692 * NOTES:
693 * Finds best matching videomode which has an equal or greater dimension than
694 * var->xres and var->yres. If more than 1 videomode is found, will return
695 * the videomode with the highest refresh rate
696 */
697 struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
698 struct list_head *head)
699 {
700 struct list_head *pos;
701 struct fb_modelist *modelist;
702 struct fb_videomode *mode, *best = NULL;
703 u32 diff = -1;
704
705 list_for_each(pos, head) {
706 u32 d;
707
708 modelist = list_entry(pos, struct fb_modelist, list);
709 mode = &modelist->mode;
710
711 if (mode->xres >= var->xres && mode->yres >= var->yres) {
712 d = (mode->xres - var->xres) +
713 (mode->yres - var->yres);
714 if (diff > d) {
715 diff = d;
716 best = mode;
717 } else if (diff == d && mode->refresh > best->refresh)
718 best = mode;
719 }
720 }
721 return best;
722 }
723
724 /**
725 * fb_find_nearest_mode - find mode closest video mode
726 *
727 * @var: pointer to struct fb_var_screeninfo
728 * @head: pointer to modelist
729 *
730 * Finds best matching videomode, smaller or greater in dimension.
731 * If more than 1 videomode is found, will return the videomode with
732 * the closest refresh rate
733 */
734 struct fb_videomode *fb_find_nearest_mode(struct fb_var_screeninfo *var,
735 struct list_head *head)
736 {
737 struct list_head *pos;
738 struct fb_modelist *modelist;
739 struct fb_videomode *mode, *best = NULL;
740 u32 diff = -1, diff_refresh = -1;
741
742 list_for_each(pos, head) {
743 u32 d;
744
745 modelist = list_entry(pos, struct fb_modelist, list);
746 mode = &modelist->mode;
747
748 d = abs(mode->xres - var->xres) +
749 abs(mode->yres - var->yres);
750 if (diff > d) {
751 diff = d;
752 best = mode;
753 } else if (diff == d) {
754 d = abs(mode->refresh - best->refresh);
755 if (diff_refresh > d) {
756 diff_refresh = d;
757 best = mode;
758 }
759 }
760 }
761
762 return best;
763 }
764
765 /**
766 * fb_match_mode - find a videomode which exactly matches the timings in var
767 * @var: pointer to struct fb_var_screeninfo
768 * @head: pointer to struct list_head of modelist
769 *
770 * RETURNS:
771 * struct fb_videomode, NULL if none found
772 */
773 struct fb_videomode *fb_match_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 *m, mode;
779
780 fb_var_to_videomode(&mode, var);
781 list_for_each(pos, head) {
782 modelist = list_entry(pos, struct fb_modelist, list);
783 m = &modelist->mode;
784 if (fb_mode_is_equal(m, &mode))
785 return m;
786 }
787 return NULL;
788 }
789
790 /**
791 * fb_add_videomode: adds videomode entry to modelist
792 * @mode: videomode to add
793 * @head: struct list_head of modelist
794 *
795 * NOTES:
796 * Will only add unmatched mode entries
797 */
798 int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
799 {
800 struct list_head *pos;
801 struct fb_modelist *modelist;
802 struct fb_videomode *m;
803 int found = 0;
804
805 list_for_each(pos, head) {
806 modelist = list_entry(pos, struct fb_modelist, list);
807 m = &modelist->mode;
808 if (fb_mode_is_equal(m, mode)) {
809 found = 1;
810 break;
811 }
812 }
813 if (!found) {
814 modelist = kmalloc(sizeof(struct fb_modelist),
815 GFP_KERNEL);
816
817 if (!modelist)
818 return -ENOMEM;
819 modelist->mode = *mode;
820 list_add(&modelist->list, head);
821 }
822 return 0;
823 }
824
825 /**
826 * fb_delete_videomode: removed videomode entry from modelist
827 * @mode: videomode to remove
828 * @head: struct list_head of modelist
829 *
830 * NOTES:
831 * Will remove all matching mode entries
832 */
833 void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
834 {
835 struct list_head *pos, *n;
836 struct fb_modelist *modelist;
837 struct fb_videomode *m;
838
839 list_for_each_safe(pos, n, head) {
840 modelist = list_entry(pos, struct fb_modelist, list);
841 m = &modelist->mode;
842 if (fb_mode_is_equal(m, mode)) {
843 list_del(pos);
844 kfree(pos);
845 }
846 }
847 }
848
849 /**
850 * fb_destroy_modelist: destroy modelist
851 * @head: struct list_head of modelist
852 */
853 void fb_destroy_modelist(struct list_head *head)
854 {
855 struct list_head *pos, *n;
856
857 list_for_each_safe(pos, n, head) {
858 list_del(pos);
859 kfree(pos);
860 }
861 }
862
863 /**
864 * fb_videomode_to_modelist: convert mode array to mode list
865 * @modedb: array of struct fb_videomode
866 * @num: number of entries in array
867 * @head: struct list_head of modelist
868 */
869 void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
870 struct list_head *head)
871 {
872 int i;
873
874 INIT_LIST_HEAD(head);
875
876 for (i = 0; i < num; i++) {
877 if (fb_add_videomode(&modedb[i], head))
878 return;
879 }
880 }
881
882 EXPORT_SYMBOL(fb_videomode_to_var);
883 EXPORT_SYMBOL(fb_var_to_videomode);
884 EXPORT_SYMBOL(fb_mode_is_equal);
885 EXPORT_SYMBOL(fb_add_videomode);
886 EXPORT_SYMBOL(fb_delete_videomode);
887 EXPORT_SYMBOL(fb_destroy_modelist);
888 EXPORT_SYMBOL(fb_match_mode);
889 EXPORT_SYMBOL(fb_find_best_mode);
890 EXPORT_SYMBOL(fb_find_nearest_mode);
891 EXPORT_SYMBOL(fb_videomode_to_modelist);
892 EXPORT_SYMBOL(fb_find_mode);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree