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[PATCH] radeonfb: Only request resources we need
[deliverable/linux.git] / drivers / video / modedb.c
CommitLineData
1da177e4
LT		 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
32const char *global_mode_option;
33
34 /*
35 * Standard video mode definitions (taken from XFree86)
36 */
37
38#define DEFAULT_MODEDB_INDEX 0
39
40static 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
db6778db
AD		 249 }, {
250 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
251 NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
252 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
253 FB_VMODE_NONINTERLACED
1da177e4
LT		 254 },
255};
256
257#ifdef CONFIG_FB_MODE_HELPERS
258const struct fb_videomode vesa_modes[] = {
259 /* 0 640x350-85 VESA */
260 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
261 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
262 /* 1 640x400-85 VESA */
263 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
264 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
265 /* 2 720x400-85 VESA */
266 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
267 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
268 /* 3 640x480-60 VESA */
269 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
270 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
271 /* 4 640x480-72 VESA */
272 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
273 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
274 /* 5 640x480-75 VESA */
275 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
276 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
277 /* 6 640x480-85 VESA */
278 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
279 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
280 /* 7 800x600-56 VESA */
281 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
282 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
283 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
284 /* 8 800x600-60 VESA */
285 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
286 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
287 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
288 /* 9 800x600-72 VESA */
289 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
290 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
291 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
292 /* 10 800x600-75 VESA */
293 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
294 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
295 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
296 /* 11 800x600-85 VESA */
297 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
298 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
299 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
300 /* 12 1024x768i-43 VESA */
301 { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
302 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
303 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
304 /* 13 1024x768-60 VESA */
305 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
306 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
307 /* 14 1024x768-70 VESA */
308 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
309 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
310 /* 15 1024x768-75 VESA */
311 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
312 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
313 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
314 /* 16 1024x768-85 VESA */
315 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
316 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
317 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
318 /* 17 1152x864-75 VESA */
319 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
320 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
321 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
322 /* 18 1280x960-60 VESA */
323 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
324 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
325 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
326 /* 19 1280x960-85 VESA */
327 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
328 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
329 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
330 /* 20 1280x1024-60 VESA */
331 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
332 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
333 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
334 /* 21 1280x1024-75 VESA */
335 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
336 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
337 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
338 /* 22 1280x1024-85 VESA */
339 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
340 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
341 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
342 /* 23 1600x1200-60 VESA */
343 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
344 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
345 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
346 /* 24 1600x1200-65 VESA */
347 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
348 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
349 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
350 /* 25 1600x1200-70 VESA */
351 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
352 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
353 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
354 /* 26 1600x1200-75 VESA */
355 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
356 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
357 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
358 /* 27 1600x1200-85 VESA */
359 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
360 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
361 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
362 /* 28 1792x1344-60 VESA */
363 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
364 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
365 /* 29 1792x1344-75 VESA */
366 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
367 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
368 /* 30 1856x1392-60 VESA */
369 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
370 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
371 /* 31 1856x1392-75 VESA */
372 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
373 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
374 /* 32 1920x1440-60 VESA */
375 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
376 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
377 /* 33 1920x1440-75 VESA */
378 { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
379 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
380};
381EXPORT_SYMBOL(vesa_modes);
382#endif /* CONFIG_FB_MODE_HELPERS */
383
384static int my_atoi(const char *name)
385{
386 int val = 0;
387
388 for (;; name++) {
389 switch (*name) {
390 case '0'...'9':
391 val = 10*val+(*name-'0');
392 break;
393 default:
394 return val;
395 }
396 }
397}
398
399/**
400 * fb_try_mode - test a video mode
401 * @var: frame buffer user defined part of display
402 * @info: frame buffer info structure
403 * @mode: frame buffer video mode structure
404 * @bpp: color depth in bits per pixel
405 *
406 * Tries a video mode to test it's validity for device @info.
407 *
408 * Returns 1 on success.
409 *
410 */
411
412static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
413 const struct fb_videomode *mode, unsigned int bpp)
414{
415 int err = 0;
416
417 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
418 mode->xres, mode->yres, bpp, mode->refresh);
419 var->xres = mode->xres;
420 var->yres = mode->yres;
421 var->xres_virtual = mode->xres;
422 var->yres_virtual = mode->yres;
423 var->xoffset = 0;
424 var->yoffset = 0;
425 var->bits_per_pixel = bpp;
426 var->activate |= FB_ACTIVATE_TEST;
427 var->pixclock = mode->pixclock;
428 var->left_margin = mode->left_margin;
429 var->right_margin = mode->right_margin;
430 var->upper_margin = mode->upper_margin;
431 var->lower_margin = mode->lower_margin;
432 var->hsync_len = mode->hsync_len;
433 var->vsync_len = mode->vsync_len;
434 var->sync = mode->sync;
435 var->vmode = mode->vmode;
436 if (info->fbops->fb_check_var)
437 err = info->fbops->fb_check_var(var, info);
438 var->activate &= ~FB_ACTIVATE_TEST;
439 return err;
440}
441
442/**
443 * fb_find_mode - finds a valid video mode
444 * @var: frame buffer user defined part of display
445 * @info: frame buffer info structure
446 * @mode_option: string video mode to find
447 * @db: video mode database
448 * @dbsize: size of @db
449 * @default_mode: default video mode to fall back to
450 * @default_bpp: default color depth in bits per pixel
451 *
452 * Finds a suitable video mode, starting with the specified mode
453 * in @mode_option with fallback to @default_mode. If
454 * @default_mode fails, all modes in the video mode database will
455 * be tried.
456 *
457 * Valid mode specifiers for @mode_option:
458 *
459 * <xres>x<yres>[-<bpp>][@<refresh>] or
460 * <name>[-<bpp>][@<refresh>]
461 *
462 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
463 * <name> a string.
464 *
465 * NOTE: The passed struct @var is _not_ cleared! This allows you
466 * to supply values for e.g. the grayscale and accel_flags fields.
467 *
468 * Returns zero for failure, 1 if using specified @mode_option,
469 * 2 if using specified @mode_option with an ignored refresh rate,
470 * 3 if default mode is used, 4 if fall back to any valid mode.
471 *
472 */
473
474int fb_find_mode(struct fb_var_screeninfo *var,
475 struct fb_info *info, const char *mode_option,
476 const struct fb_videomode *db, unsigned int dbsize,
477 const struct fb_videomode *default_mode,
478 unsigned int default_bpp)
479{
480 int i;
481
482 /* Set up defaults */
483 if (!db) {
484 db = modedb;
485 dbsize = sizeof(modedb)/sizeof(*modedb);
486 }
487 if (!default_mode)
488 default_mode = &modedb[DEFAULT_MODEDB_INDEX];
489 if (!default_bpp)
490 default_bpp = 8;
491
492 /* Did the user specify a video mode? */
493 if (mode_option || (mode_option = global_mode_option)) {
494 const char *name = mode_option;
495 unsigned int namelen = strlen(name);
496 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
497 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
498 int yres_specified = 0;
499 u32 best, diff;
500
501 for (i = namelen-1; i >= 0; i--) {
502 switch (name[i]) {
503 case '@':
504 namelen = i;
505 if (!refresh_specified && !bpp_specified &&
506 !yres_specified) {
507 refresh = my_atoi(&name[i+1]);
508 refresh_specified = 1;
509 } else
510 goto done;
511 break;
512 case '-':
513 namelen = i;
514 if (!bpp_specified && !yres_specified) {
515 bpp = my_atoi(&name[i+1]);
516 bpp_specified = 1;
517 } else
518 goto done;
519 break;
520 case 'x':
521 if (!yres_specified) {
522 yres = my_atoi(&name[i+1]);
523 yres_specified = 1;
524 } else
525 goto done;
526 break;
527 case '0'...'9':
528 break;
529 default:
530 goto done;
531 }
532 }
533 if (i < 0 && yres_specified) {
534 xres = my_atoi(name);
535 res_specified = 1;
536 }
537done:
538 DPRINTK("Trying specified video mode%s %ix%i\n",
539 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
540
541 diff = refresh;
542 best = -1;
543 for (i = 0; i < dbsize; i++) {
544 if ((name_matches(db[i], name, namelen) &&
545 !fb_try_mode(var, info, &db[i], bpp)))
546 return 1;
547 if (res_specified && res_matches(db[i], xres, yres)) {
548 if(!fb_try_mode(var, info, &db[i], bpp)) {
549 if(!refresh_specified || db[i].refresh == refresh)
550 return 1;
551 else {
552 if(diff > abs(db[i].refresh - refresh)) {
553 diff = abs(db[i].refresh - refresh);
554 best = i;
555 }
556 }
557 }
558 }
559 }
560 if (best != -1) {
561 fb_try_mode(var, info, &db[best], bpp);
562 return 2;
563 }
564
565 diff = xres + yres;
566 best = -1;
567 DPRINTK("Trying best-fit modes\n");
568 for (i = 0; i < dbsize; i++) {
569 if (xres <= db[i].xres && yres <= db[i].yres) {
570 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
571 if (!fb_try_mode(var, info, &db[i], bpp)) {
572 if (diff > (db[i].xres - xres) + (db[i].yres - yres)) {
573 diff = (db[i].xres - xres) + (db[i].yres - yres);
574 best = i;
575 }
576 }
577 }
578 }
579 if (best != -1) {
580 fb_try_mode(var, info, &db[best], bpp);
581 return 5;
582 }
583 }
584
585 DPRINTK("Trying default video mode\n");
586 if (!fb_try_mode(var, info, default_mode, default_bpp))
587 return 3;
588
589 DPRINTK("Trying all modes\n");
590 for (i = 0; i < dbsize; i++)
591 if (!fb_try_mode(var, info, &db[i], default_bpp))
592 return 4;
593
594 DPRINTK("No valid mode found\n");
595 return 0;
596}
597
598/**
599 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
600 * @mode: pointer to struct fb_videomode
601 * @var: pointer to struct fb_var_screeninfo
602 */
603void fb_var_to_videomode(struct fb_videomode *mode,
604 struct fb_var_screeninfo *var)
605{
606 u32 pixclock, hfreq, htotal, vtotal;
607
608 mode->name = NULL;
609 mode->xres = var->xres;
610 mode->yres = var->yres;
611 mode->pixclock = var->pixclock;
612 mode->hsync_len = var->hsync_len;
613 mode->vsync_len = var->vsync_len;
614 mode->left_margin = var->left_margin;
615 mode->right_margin = var->right_margin;
616 mode->upper_margin = var->upper_margin;
617 mode->lower_margin = var->lower_margin;
618 mode->sync = var->sync;
619 mode->vmode = var->vmode & FB_VMODE_MASK;
620 mode->flag = FB_MODE_IS_FROM_VAR;
621 if (!var->pixclock)
622 return;
623
624 pixclock = PICOS2KHZ(var->pixclock) * 1000;
625
626 htotal = var->xres + var->right_margin + var->hsync_len +
627 var->left_margin;
628 vtotal = var->yres + var->lower_margin + var->vsync_len +
629 var->upper_margin;
630
631 if (var->vmode & FB_VMODE_INTERLACED)
632 vtotal /= 2;
633 if (var->vmode & FB_VMODE_DOUBLE)
634 vtotal *= 2;
635
636 hfreq = pixclock/htotal;
637 mode->refresh = hfreq/vtotal;
638}
639
640/**
641 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
642 * @var: pointer to struct fb_var_screeninfo
643 * @mode: pointer to struct fb_videomode
644 */
645void fb_videomode_to_var(struct fb_var_screeninfo *var,
646 struct fb_videomode *mode)
647{
648 var->xres = mode->xres;
649 var->yres = mode->yres;
650 var->pixclock = mode->pixclock;
651 var->left_margin = mode->left_margin;
652 var->hsync_len = mode->hsync_len;
653 var->vsync_len = mode->vsync_len;
654 var->right_margin = mode->right_margin;
655 var->upper_margin = mode->upper_margin;
656 var->lower_margin = mode->lower_margin;
657 var->sync = mode->sync;
658 var->vmode = mode->vmode & FB_VMODE_MASK;
659}
660
661/**
662 * fb_mode_is_equal - compare 2 videomodes
663 * @mode1: first videomode
664 * @mode2: second videomode
665 *
666 * RETURNS:
667 * 1 if equal, 0 if not
668 */
669int fb_mode_is_equal(struct fb_videomode *mode1,
670 struct fb_videomode *mode2)
671{
672 return (mode1->xres == mode2->xres &&
673 mode1->yres == mode2->yres &&
674 mode1->pixclock == mode2->pixclock &&
675 mode1->hsync_len == mode2->hsync_len &&
676 mode1->vsync_len == mode2->vsync_len &&
677 mode1->left_margin == mode2->left_margin &&
678 mode1->right_margin == mode2->right_margin &&
679 mode1->upper_margin == mode2->upper_margin &&
680 mode1->lower_margin == mode2->lower_margin &&
681 mode1->sync == mode2->sync &&
682 mode1->vmode == mode2->vmode);
683}
684
685/**
686 * fb_find_best_mode - find best matching videomode
687 * @var: pointer to struct fb_var_screeninfo
688 * @head: pointer to struct list_head of modelist
689 *
690 * RETURNS:
691 * struct fb_videomode, NULL if none found
692 *
693 * IMPORTANT:
694 * This function assumes that all modelist entries in
695 * info->modelist are valid.
696 *
697 * NOTES:
698 * Finds best matching videomode which has an equal or greater dimension than
699 * var->xres and var->yres. If more than 1 videomode is found, will return
700 * the videomode with the highest refresh rate
701 */
702struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
703 struct list_head *head)
704{
705 struct list_head *pos;
706 struct fb_modelist *modelist;
707 struct fb_videomode *mode, *best = NULL;
708 u32 diff = -1;
709
710 list_for_each(pos, head) {
711 u32 d;
712
713 modelist = list_entry(pos, struct fb_modelist, list);
714 mode = &modelist->mode;
715
716 if (mode->xres >= var->xres && mode->yres >= var->yres) {
717 d = (mode->xres - var->xres) +
718 (mode->yres - var->yres);
719 if (diff > d) {
720 diff = d;
721 best = mode;
722 } else if (diff == d && mode->refresh > best->refresh)
723 best = mode;
724 }
725 }
726 return best;
727}
728
729/**
730 * fb_find_nearest_mode - find mode closest video mode
731 *
732 * @var: pointer to struct fb_var_screeninfo
733 * @head: pointer to modelist
734 *
735 * Finds best matching videomode, smaller or greater in dimension.
736 * If more than 1 videomode is found, will return the videomode with
737 * the closest refresh rate
738 */
739struct fb_videomode *fb_find_nearest_mode(struct fb_var_screeninfo *var,
740 struct list_head *head)
741{
742 struct list_head *pos;
743 struct fb_modelist *modelist;
744 struct fb_videomode *mode, *best = NULL;
745 u32 diff = -1, diff_refresh = -1;
746
747 list_for_each(pos, head) {
748 u32 d;
749
750 modelist = list_entry(pos, struct fb_modelist, list);
751 mode = &modelist->mode;
752
753 d = abs(mode->xres - var->xres) +
754 abs(mode->yres - var->yres);
755 if (diff > d) {
756 diff = d;
757 best = mode;
758 } else if (diff == d) {
759 d = abs(mode->refresh - best->refresh);
760 if (diff_refresh > d) {
761 diff_refresh = d;
762 best = mode;
763 }
764 }
765 }
766
767 return best;
768}
769
770/**
771 * fb_match_mode - find a videomode which exactly matches the timings in var
772 * @var: pointer to struct fb_var_screeninfo
773 * @head: pointer to struct list_head of modelist
774 *
775 * RETURNS:
776 * struct fb_videomode, NULL if none found
777 */
778struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
779 struct list_head *head)
780{
781 struct list_head *pos;
782 struct fb_modelist *modelist;
783 struct fb_videomode *m, mode;
784
785 fb_var_to_videomode(&mode, var);
786 list_for_each(pos, head) {
787 modelist = list_entry(pos, struct fb_modelist, list);
788 m = &modelist->mode;
789 if (fb_mode_is_equal(m, &mode))
790 return m;
791 }
792 return NULL;
793}
794
795/**
796 * fb_add_videomode: adds videomode entry to modelist
797 * @mode: videomode to add
798 * @head: struct list_head of modelist
799 *
800 * NOTES:
801 * Will only add unmatched mode entries
802 */
803int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
804{
805 struct list_head *pos;
806 struct fb_modelist *modelist;
807 struct fb_videomode *m;
808 int found = 0;
809
810 list_for_each(pos, head) {
811 modelist = list_entry(pos, struct fb_modelist, list);
812 m = &modelist->mode;
813 if (fb_mode_is_equal(m, mode)) {
814 found = 1;
815 break;
816 }
817 }
818 if (!found) {
819 modelist = kmalloc(sizeof(struct fb_modelist),
820 GFP_KERNEL);
821
822 if (!modelist)
823 return -ENOMEM;
824 modelist->mode = *mode;
825 list_add(&modelist->list, head);
826 }
827 return 0;
828}
829
830/**
831 * fb_delete_videomode: removed videomode entry from modelist
832 * @mode: videomode to remove
833 * @head: struct list_head of modelist
834 *
835 * NOTES:
836 * Will remove all matching mode entries
837 */
838void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
839{
840 struct list_head *pos, *n;
841 struct fb_modelist *modelist;
842 struct fb_videomode *m;
843
844 list_for_each_safe(pos, n, head) {
845 modelist = list_entry(pos, struct fb_modelist, list);
846 m = &modelist->mode;
847 if (fb_mode_is_equal(m, mode)) {
848 list_del(pos);
849 kfree(pos);
850 }
851 }
852}
853
854/**
855 * fb_destroy_modelist: destroy modelist
856 * @head: struct list_head of modelist
857 */
858void fb_destroy_modelist(struct list_head *head)
859{
860 struct list_head *pos, *n;
861
862 list_for_each_safe(pos, n, head) {
863 list_del(pos);
864 kfree(pos);
865 }
866}
867
868/**
869 * fb_videomode_to_modelist: convert mode array to mode list
870 * @modedb: array of struct fb_videomode
871 * @num: number of entries in array
872 * @head: struct list_head of modelist
873 */
874void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
875 struct list_head *head)
876{
877 int i;
878
879 INIT_LIST_HEAD(head);
880
881 for (i = 0; i < num; i++) {
882 if (fb_add_videomode(&modedb[i], head))
883 return;
884 }
885}
886
887EXPORT_SYMBOL(fb_videomode_to_var);
888EXPORT_SYMBOL(fb_var_to_videomode);
889EXPORT_SYMBOL(fb_mode_is_equal);
890EXPORT_SYMBOL(fb_add_videomode);
891EXPORT_SYMBOL(fb_delete_videomode);
892EXPORT_SYMBOL(fb_destroy_modelist);
893EXPORT_SYMBOL(fb_match_mode);
894EXPORT_SYMBOL(fb_find_best_mode);
895EXPORT_SYMBOL(fb_find_nearest_mode);
896EXPORT_SYMBOL(fb_videomode_to_modelist);
897EXPORT_SYMBOL(fb_find_mode);
Linux kernel - Deliverables
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