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close_port, kpacket_gen kmalloc oom, formard.c wake_sender/skb receive oom handling...
[cor_2_6_31.git] / drivers / video / modedb.c
blob34e4e79951696bd5ac805cb69fea5780e84018c2
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
17 #undef DEBUG
18
19 #define name_matches(v, s, l) \
20 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
21 #define res_matches(v, x, y) \
22 ((v).xres == (x) && (v).yres == (y))
23
24 #ifdef DEBUG
25 #define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args)
26 #else
27 #define DPRINTK(fmt, args...)
28 #endif
29
30 const char *fb_mode_option;
31 EXPORT_SYMBOL_GPL(fb_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, 89, 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, 60, 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, 7190, 120, 56, 23, 10, 112, 13,
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, 14047, 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 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
265 NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3,
266 0, FB_VMODE_NONINTERLACED
267 }, {
268 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
269 NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5,
270 0, FB_VMODE_INTERLACED
271 }, {
272 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
273 NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5,
274 0, FB_VMODE_INTERLACED
275 },
276 };
277
278 #ifdef CONFIG_FB_MODE_HELPERS
279 const struct fb_videomode vesa_modes[] = {
280 /* 0 640x350-85 VESA */
281 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
282 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
283 /* 1 640x400-85 VESA */
284 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
285 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
286 /* 2 720x400-85 VESA */
287 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
288 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
289 /* 3 640x480-60 VESA */
290 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
291 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
292 /* 4 640x480-72 VESA */
293 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
294 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
295 /* 5 640x480-75 VESA */
296 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
297 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
298 /* 6 640x480-85 VESA */
299 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
300 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
301 /* 7 800x600-56 VESA */
302 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
303 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
304 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
305 /* 8 800x600-60 VESA */
306 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
307 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
308 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
309 /* 9 800x600-72 VESA */
310 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
311 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
312 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
313 /* 10 800x600-75 VESA */
314 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
315 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
316 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
317 /* 11 800x600-85 VESA */
318 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
319 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
320 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
321 /* 12 1024x768i-43 VESA */
322 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
323 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
324 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
325 /* 13 1024x768-60 VESA */
326 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
327 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
328 /* 14 1024x768-70 VESA */
329 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
330 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
331 /* 15 1024x768-75 VESA */
332 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
335 /* 16 1024x768-85 VESA */
336 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
339 /* 17 1152x864-75 VESA */
340 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
342 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
343 /* 18 1280x960-60 VESA */
344 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
345 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
346 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
347 /* 19 1280x960-85 VESA */
348 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
349 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
350 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
351 /* 20 1280x1024-60 VESA */
352 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
353 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
354 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
355 /* 21 1280x1024-75 VESA */
356 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
357 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
358 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
359 /* 22 1280x1024-85 VESA */
360 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
361 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
362 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
363 /* 23 1600x1200-60 VESA */
364 { NULL, 60, 1600, 1200, 6172, 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 /* 24 1600x1200-65 VESA */
368 { NULL, 65, 1600, 1200, 5698, 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 /* 25 1600x1200-70 VESA */
372 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
373 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
374 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
375 /* 26 1600x1200-75 VESA */
376 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
377 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
378 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
379 /* 27 1600x1200-85 VESA */
380 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
381 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
382 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
383 /* 28 1792x1344-60 VESA */
384 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
385 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
386 /* 29 1792x1344-75 VESA */
387 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
388 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
389 /* 30 1856x1392-60 VESA */
390 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
391 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
392 /* 31 1856x1392-75 VESA */
393 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
394 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
395 /* 32 1920x1440-60 VESA */
396 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
397 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
398 /* 33 1920x1440-75 VESA */
399 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
400 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
401 };
402 EXPORT_SYMBOL(vesa_modes);
403 #endif /* CONFIG_FB_MODE_HELPERS */
404
405 static int my_atoi(const char *name)
406 {
407 int val = 0;
408
409 for (;; name++) {
410 switch (*name) {
411 case '0' ... '9':
412 val = 10*val+(*name-'0');
413 break;
414 default:
415 return val;
416 }
417 }
418 }
419
420 /**
421 * fb_try_mode - test a video mode
422 * @var: frame buffer user defined part of display
423 * @info: frame buffer info structure
424 * @mode: frame buffer video mode structure
425 * @bpp: color depth in bits per pixel
426 *
427 * Tries a video mode to test it's validity for device @info.
428 *
429 * Returns 1 on success.
430 *
431 */
432
433 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
434 const struct fb_videomode *mode, unsigned int bpp)
435 {
436 int err = 0;
437
438 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
439 mode->xres, mode->yres, bpp, mode->refresh);
440 var->xres = mode->xres;
441 var->yres = mode->yres;
442 var->xres_virtual = mode->xres;
443 var->yres_virtual = mode->yres;
444 var->xoffset = 0;
445 var->yoffset = 0;
446 var->bits_per_pixel = bpp;
447 var->activate |= FB_ACTIVATE_TEST;
448 var->pixclock = mode->pixclock;
449 var->left_margin = mode->left_margin;
450 var->right_margin = mode->right_margin;
451 var->upper_margin = mode->upper_margin;
452 var->lower_margin = mode->lower_margin;
453 var->hsync_len = mode->hsync_len;
454 var->vsync_len = mode->vsync_len;
455 var->sync = mode->sync;
456 var->vmode = mode->vmode;
457 if (info->fbops->fb_check_var)
458 err = info->fbops->fb_check_var(var, info);
459 var->activate &= ~FB_ACTIVATE_TEST;
460 return err;
461 }
462
463 /**
464 * fb_find_mode - finds a valid video mode
465 * @var: frame buffer user defined part of display
466 * @info: frame buffer info structure
467 * @mode_option: string video mode to find
468 * @db: video mode database
469 * @dbsize: size of @db
470 * @default_mode: default video mode to fall back to
471 * @default_bpp: default color depth in bits per pixel
472 *
473 * Finds a suitable video mode, starting with the specified mode
474 * in @mode_option with fallback to @default_mode. If
475 * @default_mode fails, all modes in the video mode database will
476 * be tried.
477 *
478 * Valid mode specifiers for @mode_option:
479 *
480 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
481 * <name>[-<bpp>][@<refresh>]
482 *
483 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
484 * <name> a string.
485 *
486 * If 'M' is present after yres (and before refresh/bpp if present),
487 * the function will compute the timings using VESA(tm) Coordinated
488 * Video Timings (CVT). If 'R' is present after 'M', will compute with
489 * reduced blanking (for flatpanels). If 'i' is present, compute
490 * interlaced mode. If 'm' is present, add margins equal to 1.8%
491 * of xres rounded down to 8 pixels, and 1.8% of yres. The char
492 * 'i' and 'm' must be after 'M' and 'R'. Example:
493 *
494 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
495 *
496 * NOTE: The passed struct @var is _not_ cleared! This allows you
497 * to supply values for e.g. the grayscale and accel_flags fields.
498 *
499 * Returns zero for failure, 1 if using specified @mode_option,
500 * 2 if using specified @mode_option with an ignored refresh rate,
501 * 3 if default mode is used, 4 if fall back to any valid mode.
502 *
503 */
504
505 int fb_find_mode(struct fb_var_screeninfo *var,
506 struct fb_info *info, const char *mode_option,
507 const struct fb_videomode *db, unsigned int dbsize,
508 const struct fb_videomode *default_mode,
509 unsigned int default_bpp)
510 {
511 int i;
512
513 /* Set up defaults */
514 if (!db) {
515 db = modedb;
516 dbsize = ARRAY_SIZE(modedb);
517 }
518
519 if (!default_mode)
520 default_mode = &db[0];
521
522 if (!default_bpp)
523 default_bpp = 8;
524
525 /* Did the user specify a video mode? */
526 if (!mode_option)
527 mode_option = fb_mode_option;
528 if (mode_option) {
529 const char *name = mode_option;
530 unsigned int namelen = strlen(name);
531 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
532 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
533 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
534 u32 best, diff, tdiff;
535
536 for (i = namelen-1; i >= 0; i--) {
537 switch (name[i]) {
538 case '@':
539 namelen = i;
540 if (!refresh_specified && !bpp_specified &&
541 !yres_specified) {
542 refresh = my_atoi(&name[i+1]);
543 refresh_specified = 1;
544 if (cvt || rb)
545 cvt = 0;
546 } else
547 goto done;
548 break;
549 case '-':
550 namelen = i;
551 if (!bpp_specified && !yres_specified) {
552 bpp = my_atoi(&name[i+1]);
553 bpp_specified = 1;
554 if (cvt || rb)
555 cvt = 0;
556 } else
557 goto done;
558 break;
559 case 'x':
560 if (!yres_specified) {
561 yres = my_atoi(&name[i+1]);
562 yres_specified = 1;
563 } else
564 goto done;
565 break;
566 case '0' ... '9':
567 break;
568 case 'M':
569 if (!yres_specified)
570 cvt = 1;
571 break;
572 case 'R':
573 if (!cvt)
574 rb = 1;
575 break;
576 case 'm':
577 if (!cvt)
578 margins = 1;
579 break;
580 case 'i':
581 if (!cvt)
582 interlace = 1;
583 break;
584 default:
585 goto done;
586 }
587 }
588 if (i < 0 && yres_specified) {
589 xres = my_atoi(name);
590 res_specified = 1;
591 }
592 done:
593 if (cvt) {
594 struct fb_videomode cvt_mode;
595 int ret;
596
597 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
598 (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
599 "", (margins) ? " with margins" : "", (interlace) ?
600 " interlaced" : "");
601
602 memset(&cvt_mode, 0, sizeof(cvt_mode));
603 cvt_mode.xres = xres;
604 cvt_mode.yres = yres;
605 cvt_mode.refresh = (refresh) ? refresh : 60;
606
607 if (interlace)
608 cvt_mode.vmode |= FB_VMODE_INTERLACED;
609 else
610 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
611
612 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
613
614 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
615 DPRINTK("modedb CVT: CVT mode ok\n");
616 return 1;
617 }
618
619 DPRINTK("CVT mode invalid, getting mode from database\n");
620 }
621
622 DPRINTK("Trying specified video mode%s %ix%i\n",
623 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
624
625 if (!refresh_specified) {
626 /*
627 * If the caller has provided a custom mode database and a
628 * valid monspecs structure, we look for the mode with the
629 * highest refresh rate. Otherwise we play it safe it and
630 * try to find a mode with a refresh rate closest to the
631 * standard 60 Hz.
632 */
633 if (db != modedb &&
634 info->monspecs.vfmin && info->monspecs.vfmax &&
635 info->monspecs.hfmin && info->monspecs.hfmax &&
636 info->monspecs.dclkmax) {
637 refresh = 1000;
638 } else {
639 refresh = 60;
640 }
641 }
642
643 diff = -1;
644 best = -1;
645 for (i = 0; i < dbsize; i++) {
646 if ((name_matches(db[i], name, namelen) ||
647 (res_specified && res_matches(db[i], xres, yres))) &&
648 !fb_try_mode(var, info, &db[i], bpp)) {
649 if (refresh_specified && db[i].refresh == refresh) {
650 return 1;
651 } else {
652 if (abs(db[i].refresh - refresh) < diff) {
653 diff = abs(db[i].refresh - refresh);
654 best = i;
655 }
656 }
657 }
658 }
659 if (best != -1) {
660 fb_try_mode(var, info, &db[best], bpp);
661 return (refresh_specified) ? 2 : 1;
662 }
663
664 diff = 2 * (xres + yres);
665 best = -1;
666 DPRINTK("Trying best-fit modes\n");
667 for (i = 0; i < dbsize; i++) {
668 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
669 if (!fb_try_mode(var, info, &db[i], bpp)) {
670 tdiff = abs(db[i].xres - xres) +
671 abs(db[i].yres - yres);
672
673 /*
674 * Penalize modes with resolutions smaller
675 * than requested.
676 */
677 if (xres > db[i].xres || yres > db[i].yres)
678 tdiff += xres + yres;
679
680 if (diff > tdiff) {
681 diff = tdiff;
682 best = i;
683 }
684 }
685 }
686 if (best != -1) {
687 fb_try_mode(var, info, &db[best], bpp);
688 return 5;
689 }
690 }
691
692 DPRINTK("Trying default video mode\n");
693 if (!fb_try_mode(var, info, default_mode, default_bpp))
694 return 3;
695
696 DPRINTK("Trying all modes\n");
697 for (i = 0; i < dbsize; i++)
698 if (!fb_try_mode(var, info, &db[i], default_bpp))
699 return 4;
700
701 DPRINTK("No valid mode found\n");
702 return 0;
703 }
704
705 /**
706 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
707 * @mode: pointer to struct fb_videomode
708 * @var: pointer to struct fb_var_screeninfo
709 */
710 void fb_var_to_videomode(struct fb_videomode *mode,
711 const struct fb_var_screeninfo *var)
712 {
713 u32 pixclock, hfreq, htotal, vtotal;
714
715 mode->name = NULL;
716 mode->xres = var->xres;
717 mode->yres = var->yres;
718 mode->pixclock = var->pixclock;
719 mode->hsync_len = var->hsync_len;
720 mode->vsync_len = var->vsync_len;
721 mode->left_margin = var->left_margin;
722 mode->right_margin = var->right_margin;
723 mode->upper_margin = var->upper_margin;
724 mode->lower_margin = var->lower_margin;
725 mode->sync = var->sync;
726 mode->vmode = var->vmode & FB_VMODE_MASK;
727 mode->flag = FB_MODE_IS_FROM_VAR;
728 mode->refresh = 0;
729
730 if (!var->pixclock)
731 return;
732
733 pixclock = PICOS2KHZ(var->pixclock) * 1000;
734
735 htotal = var->xres + var->right_margin + var->hsync_len +
736 var->left_margin;
737 vtotal = var->yres + var->lower_margin + var->vsync_len +
738 var->upper_margin;
739
740 if (var->vmode & FB_VMODE_INTERLACED)
741 vtotal /= 2;
742 if (var->vmode & FB_VMODE_DOUBLE)
743 vtotal *= 2;
744
745 hfreq = pixclock/htotal;
746 mode->refresh = hfreq/vtotal;
747 }
748
749 /**
750 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
751 * @var: pointer to struct fb_var_screeninfo
752 * @mode: pointer to struct fb_videomode
753 */
754 void fb_videomode_to_var(struct fb_var_screeninfo *var,
755 const struct fb_videomode *mode)
756 {
757 var->xres = mode->xres;
758 var->yres = mode->yres;
759 var->xres_virtual = mode->xres;
760 var->yres_virtual = mode->yres;
761 var->xoffset = 0;
762 var->yoffset = 0;
763 var->pixclock = mode->pixclock;
764 var->left_margin = mode->left_margin;
765 var->right_margin = mode->right_margin;
766 var->upper_margin = mode->upper_margin;
767 var->lower_margin = mode->lower_margin;
768 var->hsync_len = mode->hsync_len;
769 var->vsync_len = mode->vsync_len;
770 var->sync = mode->sync;
771 var->vmode = mode->vmode & FB_VMODE_MASK;
772 }
773
774 /**
775 * fb_mode_is_equal - compare 2 videomodes
776 * @mode1: first videomode
777 * @mode2: second videomode
778 *
779 * RETURNS:
780 * 1 if equal, 0 if not
781 */
782 int fb_mode_is_equal(const struct fb_videomode *mode1,
783 const struct fb_videomode *mode2)
784 {
785 return (mode1->xres == mode2->xres &&
786 mode1->yres == mode2->yres &&
787 mode1->pixclock == mode2->pixclock &&
788 mode1->hsync_len == mode2->hsync_len &&
789 mode1->vsync_len == mode2->vsync_len &&
790 mode1->left_margin == mode2->left_margin &&
791 mode1->right_margin == mode2->right_margin &&
792 mode1->upper_margin == mode2->upper_margin &&
793 mode1->lower_margin == mode2->lower_margin &&
794 mode1->sync == mode2->sync &&
795 mode1->vmode == mode2->vmode);
796 }
797
798 /**
799 * fb_find_best_mode - find best matching videomode
800 * @var: pointer to struct fb_var_screeninfo
801 * @head: pointer to struct list_head of modelist
802 *
803 * RETURNS:
804 * struct fb_videomode, NULL if none found
805 *
806 * IMPORTANT:
807 * This function assumes that all modelist entries in
808 * info->modelist are valid.
809 *
810 * NOTES:
811 * Finds best matching videomode which has an equal or greater dimension than
812 * var->xres and var->yres. If more than 1 videomode is found, will return
813 * the videomode with the highest refresh rate
814 */
815 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
816 struct list_head *head)
817 {
818 struct list_head *pos;
819 struct fb_modelist *modelist;
820 struct fb_videomode *mode, *best = NULL;
821 u32 diff = -1;
822
823 list_for_each(pos, head) {
824 u32 d;
825
826 modelist = list_entry(pos, struct fb_modelist, list);
827 mode = &modelist->mode;
828
829 if (mode->xres >= var->xres && mode->yres >= var->yres) {
830 d = (mode->xres - var->xres) +
831 (mode->yres - var->yres);
832 if (diff > d) {
833 diff = d;
834 best = mode;
835 } else if (diff == d && best &&
836 mode->refresh > best->refresh)
837 best = mode;
838 }
839 }
840 return best;
841 }
842
843 /**
844 * fb_find_nearest_mode - find closest videomode
845 *
846 * @mode: pointer to struct fb_videomode
847 * @head: pointer to modelist
848 *
849 * Finds best matching videomode, smaller or greater in dimension.
850 * If more than 1 videomode is found, will return the videomode with
851 * the closest refresh rate.
852 */
853 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
854 struct list_head *head)
855 {
856 struct list_head *pos;
857 struct fb_modelist *modelist;
858 struct fb_videomode *cmode, *best = NULL;
859 u32 diff = -1, diff_refresh = -1;
860
861 list_for_each(pos, head) {
862 u32 d;
863
864 modelist = list_entry(pos, struct fb_modelist, list);
865 cmode = &modelist->mode;
866
867 d = abs(cmode->xres - mode->xres) +
868 abs(cmode->yres - mode->yres);
869 if (diff > d) {
870 diff = d;
871 best = cmode;
872 } else if (diff == d) {
873 d = abs(cmode->refresh - mode->refresh);
874 if (diff_refresh > d) {
875 diff_refresh = d;
876 best = cmode;
877 }
878 }
879 }
880
881 return best;
882 }
883
884 /**
885 * fb_match_mode - find a videomode which exactly matches the timings in var
886 * @var: pointer to struct fb_var_screeninfo
887 * @head: pointer to struct list_head of modelist
888 *
889 * RETURNS:
890 * struct fb_videomode, NULL if none found
891 */
892 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
893 struct list_head *head)
894 {
895 struct list_head *pos;
896 struct fb_modelist *modelist;
897 struct fb_videomode *m, mode;
898
899 fb_var_to_videomode(&mode, var);
900 list_for_each(pos, head) {
901 modelist = list_entry(pos, struct fb_modelist, list);
902 m = &modelist->mode;
903 if (fb_mode_is_equal(m, &mode))
904 return m;
905 }
906 return NULL;
907 }
908
909 /**
910 * fb_add_videomode: adds videomode entry to modelist
911 * @mode: videomode to add
912 * @head: struct list_head of modelist
913 *
914 * NOTES:
915 * Will only add unmatched mode entries
916 */
917 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
918 {
919 struct list_head *pos;
920 struct fb_modelist *modelist;
921 struct fb_videomode *m;
922 int found = 0;
923
924 list_for_each(pos, head) {
925 modelist = list_entry(pos, struct fb_modelist, list);
926 m = &modelist->mode;
927 if (fb_mode_is_equal(m, mode)) {
928 found = 1;
929 break;
930 }
931 }
932 if (!found) {
933 modelist = kmalloc(sizeof(struct fb_modelist),
934 GFP_KERNEL);
935
936 if (!modelist)
937 return -ENOMEM;
938 modelist->mode = *mode;
939 list_add(&modelist->list, head);
940 }
941 return 0;
942 }
943
944 /**
945 * fb_delete_videomode: removed videomode entry from modelist
946 * @mode: videomode to remove
947 * @head: struct list_head of modelist
948 *
949 * NOTES:
950 * Will remove all matching mode entries
951 */
952 void fb_delete_videomode(const struct fb_videomode *mode,
953 struct list_head *head)
954 {
955 struct list_head *pos, *n;
956 struct fb_modelist *modelist;
957 struct fb_videomode *m;
958
959 list_for_each_safe(pos, n, head) {
960 modelist = list_entry(pos, struct fb_modelist, list);
961 m = &modelist->mode;
962 if (fb_mode_is_equal(m, mode)) {
963 list_del(pos);
964 kfree(pos);
965 }
966 }
967 }
968
969 /**
970 * fb_destroy_modelist: destroy modelist
971 * @head: struct list_head of modelist
972 */
973 void fb_destroy_modelist(struct list_head *head)
974 {
975 struct list_head *pos, *n;
976
977 list_for_each_safe(pos, n, head) {
978 list_del(pos);
979 kfree(pos);
980 }
981 }
982 EXPORT_SYMBOL_GPL(fb_destroy_modelist);
983
984 /**
985 * fb_videomode_to_modelist: convert mode array to mode list
986 * @modedb: array of struct fb_videomode
987 * @num: number of entries in array
988 * @head: struct list_head of modelist
989 */
990 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
991 struct list_head *head)
992 {
993 int i;
994
995 INIT_LIST_HEAD(head);
996
997 for (i = 0; i < num; i++) {
998 if (fb_add_videomode(&modedb[i], head))
999 return;
1000 }
1001 }
1002
1003 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1004 struct list_head *head)
1005 {
1006 struct list_head *pos;
1007 struct fb_modelist *modelist;
1008 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
1009 int first = 0;
1010
1011 if (!head->prev || !head->next || list_empty(head))
1012 goto finished;
1013
1014 /* get the first detailed mode and the very first mode */
1015 list_for_each(pos, head) {
1016 modelist = list_entry(pos, struct fb_modelist, list);
1017 m = &modelist->mode;
1018
1019 if (!first) {
1020 m1 = m;
1021 first = 1;
1022 }
1023
1024 if (m->flag & FB_MODE_IS_FIRST) {
1025 md = m;
1026 break;
1027 }
1028 }
1029
1030 /* first detailed timing is preferred */
1031 if (specs->misc & FB_MISC_1ST_DETAIL) {
1032 best = md;
1033 goto finished;
1034 }
1035
1036 /* find best mode based on display width and height */
1037 if (specs->max_x && specs->max_y) {
1038 struct fb_var_screeninfo var;
1039
1040 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1041 var.xres = (specs->max_x * 7200)/254;
1042 var.yres = (specs->max_y * 7200)/254;
1043 m = fb_find_best_mode(&var, head);
1044 if (m) {
1045 best = m;
1046 goto finished;
1047 }
1048 }
1049
1050 /* use first detailed mode */
1051 if (md) {
1052 best = md;
1053 goto finished;
1054 }
1055
1056 /* last resort, use the very first mode */
1057 best = m1;
1058 finished:
1059 return best;
1060 }
1061 EXPORT_SYMBOL(fb_find_best_display);
1062
1063 EXPORT_SYMBOL(fb_videomode_to_var);
1064 EXPORT_SYMBOL(fb_var_to_videomode);
1065 EXPORT_SYMBOL(fb_mode_is_equal);
1066 EXPORT_SYMBOL(fb_add_videomode);
1067 EXPORT_SYMBOL(fb_match_mode);
1068 EXPORT_SYMBOL(fb_find_best_mode);
1069 EXPORT_SYMBOL(fb_find_nearest_mode);
1070 EXPORT_SYMBOL(fb_videomode_to_modelist);
1071 EXPORT_SYMBOL(fb_find_mode);
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