tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
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
254 }, {
255 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
256 NULL, 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6,
257 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
258 },
259};
260
261#ifdef CONFIG_FB_MODE_HELPERS
262const struct fb_videomode vesa_modes[] = {
263 /* 0 640x350-85 VESA */
264 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
265 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
266 /* 1 640x400-85 VESA */
267 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
268 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
269 /* 2 720x400-85 VESA */
270 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
271 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
272 /* 3 640x480-60 VESA */
273 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
274 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
275 /* 4 640x480-72 VESA */
276 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
277 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
278 /* 5 640x480-75 VESA */
279 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
280 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
281 /* 6 640x480-85 VESA */
282 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
283 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
284 /* 7 800x600-56 VESA */
285 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
286 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
287 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
288 /* 8 800x600-60 VESA */
289 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
290 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
291 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
292 /* 9 800x600-72 VESA */
293 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
294 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
295 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
296 /* 10 800x600-75 VESA */
297 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
298 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
299 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
300 /* 11 800x600-85 VESA */
301 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
302 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
303 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
304 /* 12 1024x768i-43 VESA */
305 { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
306 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
307 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
308 /* 13 1024x768-60 VESA */
309 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
310 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
311 /* 14 1024x768-70 VESA */
312 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
313 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
314 /* 15 1024x768-75 VESA */
315 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
316 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
317 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
318 /* 16 1024x768-85 VESA */
319 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
320 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
321 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
322 /* 17 1152x864-75 VESA */
323 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
324 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
325 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
326 /* 18 1280x960-60 VESA */
327 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
328 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
329 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
330 /* 19 1280x960-85 VESA */
331 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
332 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
333 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
334 /* 20 1280x1024-60 VESA */
335 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
336 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
337 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
338 /* 21 1280x1024-75 VESA */
339 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
340 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
341 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
342 /* 22 1280x1024-85 VESA */
343 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
344 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
345 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
346 /* 23 1600x1200-60 VESA */
347 { NULL, 60, 1600, 1200, 6172, 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 /* 24 1600x1200-65 VESA */
351 { NULL, 65, 1600, 1200, 5698, 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 /* 25 1600x1200-70 VESA */
355 { NULL, 70, 1600, 1200, 5291, 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 /* 26 1600x1200-75 VESA */
359 { NULL, 75, 1600, 1200, 4938, 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 /* 27 1600x1200-85 VESA */
363 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
364 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
365 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
366 /* 28 1792x1344-60 VESA */
367 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
368 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
369 /* 29 1792x1344-75 VESA */
370 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
371 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
372 /* 30 1856x1392-60 VESA */
373 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
374 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
375 /* 31 1856x1392-75 VESA */
376 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
377 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
378 /* 32 1920x1440-60 VESA */
379 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
380 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
381 /* 33 1920x1440-75 VESA */
382 { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
383 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
384};
385EXPORT_SYMBOL(vesa_modes);
386#endif /* CONFIG_FB_MODE_HELPERS */
387
388static int my_atoi(const char *name)
389{
390 int val = 0;
391
392 for (;; name++) {
393 switch (*name) {
394 case '0'...'9':
395 val = 10*val+(*name-'0');
396 break;
397 default:
398 return val;
399 }
400 }
401}
402
403/**
404 * fb_try_mode - test a video mode
405 * @var: frame buffer user defined part of display
406 * @info: frame buffer info structure
407 * @mode: frame buffer video mode structure
408 * @bpp: color depth in bits per pixel
409 *
410 * Tries a video mode to test it's validity for device @info.
411 *
412 * Returns 1 on success.
413 *
414 */
415
416static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
417 const struct fb_videomode *mode, unsigned int bpp)
418{
419 int err = 0;
420
421 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
422 mode->xres, mode->yres, bpp, mode->refresh);
423 var->xres = mode->xres;
424 var->yres = mode->yres;
425 var->xres_virtual = mode->xres;
426 var->yres_virtual = mode->yres;
427 var->xoffset = 0;
428 var->yoffset = 0;
429 var->bits_per_pixel = bpp;
430 var->activate |= FB_ACTIVATE_TEST;
431 var->pixclock = mode->pixclock;
432 var->left_margin = mode->left_margin;
433 var->right_margin = mode->right_margin;
434 var->upper_margin = mode->upper_margin;
435 var->lower_margin = mode->lower_margin;
436 var->hsync_len = mode->hsync_len;
437 var->vsync_len = mode->vsync_len;
438 var->sync = mode->sync;
439 var->vmode = mode->vmode;
440 if (info->fbops->fb_check_var)
441 err = info->fbops->fb_check_var(var, info);
442 var->activate &= ~FB_ACTIVATE_TEST;
443 return err;
444}
445
446/**
447 * fb_find_mode - finds a valid video mode
448 * @var: frame buffer user defined part of display
449 * @info: frame buffer info structure
450 * @mode_option: string video mode to find
451 * @db: video mode database
452 * @dbsize: size of @db
453 * @default_mode: default video mode to fall back to
454 * @default_bpp: default color depth in bits per pixel
455 *
456 * Finds a suitable video mode, starting with the specified mode
457 * in @mode_option with fallback to @default_mode. If
458 * @default_mode fails, all modes in the video mode database will
459 * be tried.
460 *
461 * Valid mode specifiers for @mode_option:
462 *
463 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
464 * <name>[-<bpp>][@<refresh>]
465 *
466 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
467 * <name> a string.
468 *
469 * If 'M' is present after yres (and before refresh/bpp if present),
470 * the function will compute the timings using VESA(tm) Coordinated
471 * Video Timings (CVT). If 'R' is present after 'M', will compute with
472 * reduced blanking (for flatpanels). If 'i' is present, compute
473 * interlaced mode. If 'm' is present, add margins equal to 1.8%
474 * of xres rounded down to 8 pixels, and 1.8% of yres. The char
475 * 'i' and 'm' must be after 'M' and 'R'. Example:
476 *
477 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
478 *
479 * NOTE: The passed struct @var is _not_ cleared! This allows you
480 * to supply values for e.g. the grayscale and accel_flags fields.
481 *
482 * Returns zero for failure, 1 if using specified @mode_option,
483 * 2 if using specified @mode_option with an ignored refresh rate,
484 * 3 if default mode is used, 4 if fall back to any valid mode.
485 *
486 */
487
488int fb_find_mode(struct fb_var_screeninfo *var,
489 struct fb_info *info, const char *mode_option,
490 const struct fb_videomode *db, unsigned int dbsize,
491 const struct fb_videomode *default_mode,
492 unsigned int default_bpp)
493{
494 int i;
495
496 /* Set up defaults */
497 if (!db) {
498 db = modedb;
499 dbsize = sizeof(modedb)/sizeof(*modedb);
500 }
501 if (!default_mode)
502 default_mode = &modedb[DEFAULT_MODEDB_INDEX];
503 if (!default_bpp)
504 default_bpp = 8;
505
506 /* Did the user specify a video mode? */
507 if (mode_option || (mode_option = global_mode_option)) {
508 const char *name = mode_option;
509 unsigned int namelen = strlen(name);
510 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
511 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
512 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
513 u32 best, diff;
514
515 for (i = namelen-1; i >= 0; i--) {
516 switch (name[i]) {
517 case '@':
518 namelen = i;
519 if (!refresh_specified && !bpp_specified &&
520 !yres_specified) {
521 refresh = my_atoi(&name[i+1]);
522 refresh_specified = 1;
523 if (cvt || rb)
524 cvt = 0;
525 } else
526 goto done;
527 break;
528 case '-':
529 namelen = i;
530 if (!bpp_specified && !yres_specified) {
531 bpp = my_atoi(&name[i+1]);
532 bpp_specified = 1;
533 if (cvt || rb)
534 cvt = 0;
535 } else
536 goto done;
537 break;
538 case 'x':
539 if (!yres_specified) {
540 yres = my_atoi(&name[i+1]);
541 yres_specified = 1;
542 } else
543 goto done;
544 break;
545 case '0'...'9':
546 break;
547 case 'M':
548 if (!yres_specified)
549 cvt = 1;
550 break;
551 case 'R':
552 if (!cvt)
553 rb = 1;
554 break;
555 case 'm':
556 if (!cvt)
557 margins = 1;
558 break;
559 case 'i':
560 if (!cvt)
561 interlace = 1;
562 break;
563 default:
564 goto done;
565 }
566 }
567 if (i < 0 && yres_specified) {
568 xres = my_atoi(name);
569 res_specified = 1;
570 }
571done:
572 if (cvt) {
573 struct fb_videomode cvt_mode;
574 int ret;
575
576 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
577 (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
578 "", (margins) ? " with margins" : "", (interlace) ?
579 " interlaced" : "");
580
581 cvt_mode.xres = xres;
582 cvt_mode.yres = yres;
583 cvt_mode.refresh = (refresh) ? refresh : 60;
584
585 if (interlace)
586 cvt_mode.vmode |= FB_VMODE_INTERLACED;
587 else
588 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
589
590 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
591
592 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
593 DPRINTK("modedb CVT: CVT mode ok\n");
594 return 1;
595 }
596
597 DPRINTK("CVT mode invalid, getting mode from database\n");
598 }
599
600 DPRINTK("Trying specified video mode%s %ix%i\n",
601 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
602
603 diff = refresh;
604 best = -1;
605 for (i = 0; i < dbsize; i++) {
606 if ((name_matches(db[i], name, namelen) &&
607 !fb_try_mode(var, info, &db[i], bpp)))
608 return 1;
609 if (res_specified && res_matches(db[i], xres, yres)) {
610 if(!fb_try_mode(var, info, &db[i], bpp)) {
611 if(!refresh_specified || db[i].refresh == refresh)
612 return 1;
613 else {
614 if(diff > abs(db[i].refresh - refresh)) {
615 diff = abs(db[i].refresh - refresh);
616 best = i;
617 }
618 }
619 }
620 }
621 }
622 if (best != -1) {
623 fb_try_mode(var, info, &db[best], bpp);
624 return 2;
625 }
626
627 diff = xres + yres;
628 best = -1;
629 DPRINTK("Trying best-fit modes\n");
630 for (i = 0; i < dbsize; i++) {
631 if (xres <= db[i].xres && yres <= db[i].yres) {
632 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
633 if (!fb_try_mode(var, info, &db[i], bpp)) {
634 if (diff > (db[i].xres - xres) + (db[i].yres - yres)) {
635 diff = (db[i].xres - xres) + (db[i].yres - yres);
636 best = i;
637 }
638 }
639 }
640 }
641 if (best != -1) {
642 fb_try_mode(var, info, &db[best], bpp);
643 return 5;
644 }
645 }
646
647 DPRINTK("Trying default video mode\n");
648 if (!fb_try_mode(var, info, default_mode, default_bpp))
649 return 3;
650
651 DPRINTK("Trying all modes\n");
652 for (i = 0; i < dbsize; i++)
653 if (!fb_try_mode(var, info, &db[i], default_bpp))
654 return 4;
655
656 DPRINTK("No valid mode found\n");
657 return 0;
658}
659
660/**
661 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
662 * @mode: pointer to struct fb_videomode
663 * @var: pointer to struct fb_var_screeninfo
664 */
665void fb_var_to_videomode(struct fb_videomode *mode,
666 struct fb_var_screeninfo *var)
667{
668 u32 pixclock, hfreq, htotal, vtotal;
669
670 mode->name = NULL;
671 mode->xres = var->xres;
672 mode->yres = var->yres;
673 mode->pixclock = var->pixclock;
674 mode->hsync_len = var->hsync_len;
675 mode->vsync_len = var->vsync_len;
676 mode->left_margin = var->left_margin;
677 mode->right_margin = var->right_margin;
678 mode->upper_margin = var->upper_margin;
679 mode->lower_margin = var->lower_margin;
680 mode->sync = var->sync;
681 mode->vmode = var->vmode & FB_VMODE_MASK;
682 mode->flag = FB_MODE_IS_FROM_VAR;
683 mode->refresh = 0;
684
685 if (!var->pixclock)
686 return;
687
688 pixclock = PICOS2KHZ(var->pixclock) * 1000;
689
690 htotal = var->xres + var->right_margin + var->hsync_len +
691 var->left_margin;
692 vtotal = var->yres + var->lower_margin + var->vsync_len +
693 var->upper_margin;
694
695 if (var->vmode & FB_VMODE_INTERLACED)
696 vtotal /= 2;
697 if (var->vmode & FB_VMODE_DOUBLE)
698 vtotal *= 2;
699
700 hfreq = pixclock/htotal;
701 mode->refresh = hfreq/vtotal;
702}
703
704/**
705 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
706 * @var: pointer to struct fb_var_screeninfo
707 * @mode: pointer to struct fb_videomode
708 */
709void fb_videomode_to_var(struct fb_var_screeninfo *var,
710 struct fb_videomode *mode)
711{
712 var->xres = mode->xres;
713 var->yres = mode->yres;
714 var->pixclock = mode->pixclock;
715 var->left_margin = mode->left_margin;
716 var->hsync_len = mode->hsync_len;
717 var->vsync_len = mode->vsync_len;
718 var->right_margin = mode->right_margin;
719 var->upper_margin = mode->upper_margin;
720 var->lower_margin = mode->lower_margin;
721 var->sync = mode->sync;
722 var->vmode = mode->vmode & FB_VMODE_MASK;
723}
724
725/**
726 * fb_mode_is_equal - compare 2 videomodes
727 * @mode1: first videomode
728 * @mode2: second videomode
729 *
730 * RETURNS:
731 * 1 if equal, 0 if not
732 */
733int fb_mode_is_equal(struct fb_videomode *mode1,
734 struct fb_videomode *mode2)
735{
736 return (mode1->xres == mode2->xres &&
737 mode1->yres == mode2->yres &&
738 mode1->pixclock == mode2->pixclock &&
739 mode1->hsync_len == mode2->hsync_len &&
740 mode1->vsync_len == mode2->vsync_len &&
741 mode1->left_margin == mode2->left_margin &&
742 mode1->right_margin == mode2->right_margin &&
743 mode1->upper_margin == mode2->upper_margin &&
744 mode1->lower_margin == mode2->lower_margin &&
745 mode1->sync == mode2->sync &&
746 mode1->vmode == mode2->vmode);
747}
748
749/**
750 * fb_find_best_mode - find best matching videomode
751 * @var: pointer to struct fb_var_screeninfo
752 * @head: pointer to struct list_head of modelist
753 *
754 * RETURNS:
755 * struct fb_videomode, NULL if none found
756 *
757 * IMPORTANT:
758 * This function assumes that all modelist entries in
759 * info->modelist are valid.
760 *
761 * NOTES:
762 * Finds best matching videomode which has an equal or greater dimension than
763 * var->xres and var->yres. If more than 1 videomode is found, will return
764 * the videomode with the highest refresh rate
765 */
766struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
767 struct list_head *head)
768{
769 struct list_head *pos;
770 struct fb_modelist *modelist;
771 struct fb_videomode *mode, *best = NULL;
772 u32 diff = -1;
773
774 list_for_each(pos, head) {
775 u32 d;
776
777 modelist = list_entry(pos, struct fb_modelist, list);
778 mode = &modelist->mode;
779
780 if (mode->xres >= var->xres && mode->yres >= var->yres) {
781 d = (mode->xres - var->xres) +
782 (mode->yres - var->yres);
783 if (diff > d) {
784 diff = d;
785 best = mode;
786 } else if (diff == d && mode->refresh > best->refresh)
787 best = mode;
788 }
789 }
790 return best;
791}
792
793/**
794 * fb_find_nearest_mode - find closest videomode
795 *
796 * @mode: pointer to struct fb_videomode
797 * @head: pointer to modelist
798 *
799 * Finds best matching videomode, smaller or greater in dimension.
800 * If more than 1 videomode is found, will return the videomode with
801 * the closest refresh rate.
802 */
803struct fb_videomode *fb_find_nearest_mode(struct fb_videomode *mode,
804 struct list_head *head)
805{
806 struct list_head *pos;
807 struct fb_modelist *modelist;
808 struct fb_videomode *cmode, *best = NULL;
809 u32 diff = -1, diff_refresh = -1;
810
811 list_for_each(pos, head) {
812 u32 d;
813
814 modelist = list_entry(pos, struct fb_modelist, list);
815 cmode = &modelist->mode;
816
817 d = abs(cmode->xres - mode->xres) +
818 abs(cmode->yres - mode->yres);
819 if (diff > d) {
820 diff = d;
821 best = cmode;
822 } else if (diff == d) {
823 d = abs(cmode->refresh - mode->refresh);
824 if (diff_refresh > d) {
825 diff_refresh = d;
826 best = cmode;
827 }
828 }
829 }
830
831 return best;
832}
833
834/**
835 * fb_match_mode - find a videomode which exactly matches the timings in var
836 * @var: pointer to struct fb_var_screeninfo
837 * @head: pointer to struct list_head of modelist
838 *
839 * RETURNS:
840 * struct fb_videomode, NULL if none found
841 */
842struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
843 struct list_head *head)
844{
845 struct list_head *pos;
846 struct fb_modelist *modelist;
847 struct fb_videomode *m, mode;
848
849 fb_var_to_videomode(&mode, var);
850 list_for_each(pos, head) {
851 modelist = list_entry(pos, struct fb_modelist, list);
852 m = &modelist->mode;
853 if (fb_mode_is_equal(m, &mode))
854 return m;
855 }
856 return NULL;
857}
858
859/**
860 * fb_add_videomode: adds videomode entry to modelist
861 * @mode: videomode to add
862 * @head: struct list_head of modelist
863 *
864 * NOTES:
865 * Will only add unmatched mode entries
866 */
867int fb_add_videomode(struct fb_videomode *mode, struct list_head *head)
868{
869 struct list_head *pos;
870 struct fb_modelist *modelist;
871 struct fb_videomode *m;
872 int found = 0;
873
874 list_for_each(pos, head) {
875 modelist = list_entry(pos, struct fb_modelist, list);
876 m = &modelist->mode;
877 if (fb_mode_is_equal(m, mode)) {
878 found = 1;
879 break;
880 }
881 }
882 if (!found) {
883 modelist = kmalloc(sizeof(struct fb_modelist),
884 GFP_KERNEL);
885
886 if (!modelist)
887 return -ENOMEM;
888 modelist->mode = *mode;
889 list_add(&modelist->list, head);
890 }
891 return 0;
892}
893
894/**
895 * fb_delete_videomode: removed videomode entry from modelist
896 * @mode: videomode to remove
897 * @head: struct list_head of modelist
898 *
899 * NOTES:
900 * Will remove all matching mode entries
901 */
902void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head)
903{
904 struct list_head *pos, *n;
905 struct fb_modelist *modelist;
906 struct fb_videomode *m;
907
908 list_for_each_safe(pos, n, head) {
909 modelist = list_entry(pos, struct fb_modelist, list);
910 m = &modelist->mode;
911 if (fb_mode_is_equal(m, mode)) {
912 list_del(pos);
913 kfree(pos);
914 }
915 }
916}
917
918/**
919 * fb_destroy_modelist: destroy modelist
920 * @head: struct list_head of modelist
921 */
922void fb_destroy_modelist(struct list_head *head)
923{
924 struct list_head *pos, *n;
925
926 list_for_each_safe(pos, n, head) {
927 list_del(pos);
928 kfree(pos);
929 }
930}
931
932/**
933 * fb_videomode_to_modelist: convert mode array to mode list
934 * @modedb: array of struct fb_videomode
935 * @num: number of entries in array
936 * @head: struct list_head of modelist
937 */
938void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
939 struct list_head *head)
940{
941 int i;
942
943 INIT_LIST_HEAD(head);
944
945 for (i = 0; i < num; i++) {
946 if (fb_add_videomode(&modedb[i], head))
947 return;
948 }
949}
950
951struct fb_videomode *fb_find_best_display(struct fb_monspecs *specs,
952 struct list_head *head)
953{
954 struct list_head *pos;
955 struct fb_modelist *modelist;
956 struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
957 int first = 0;
958
959 if (!head->prev || !head->next || list_empty(head))
960 goto finished;
961
962 /* get the first detailed mode and the very first mode */
963 list_for_each(pos, head) {
964 modelist = list_entry(pos, struct fb_modelist, list);
965 m = &modelist->mode;
966
967 if (!first) {
968 m1 = m;
969 first = 1;
970 }
971
972 if (m->flag & FB_MODE_IS_FIRST) {
973 md = m;
974 break;
975 }
976 }
977
978 /* first detailed timing is preferred */
979 if (specs->misc & FB_MISC_1ST_DETAIL) {
980 best = md;
981 goto finished;
982 }
983
984 /* find best mode based on display width and height */
985 if (specs->max_x && specs->max_y) {
986 struct fb_var_screeninfo var;
987
988 memset(&var, 0, sizeof(struct fb_var_screeninfo));
989 var.xres = (specs->max_x * 7200)/254;
990 var.yres = (specs->max_y * 7200)/254;
991 m = fb_find_best_mode(&var, head);
992 if (m) {
993 best = m;
994 goto finished;
995 }
996 }
997
998 /* use first detailed mode */
999 if (md) {
1000 best = md;
1001 goto finished;
1002 }
1003
1004 /* last resort, use the very first mode */
1005 best = m1;
1006finished:
1007 return best;
1008}
1009EXPORT_SYMBOL(fb_find_best_display);
1010
1011EXPORT_SYMBOL(fb_videomode_to_var);
1012EXPORT_SYMBOL(fb_var_to_videomode);
1013EXPORT_SYMBOL(fb_mode_is_equal);
1014EXPORT_SYMBOL(fb_add_videomode);
1015EXPORT_SYMBOL(fb_delete_videomode);
1016EXPORT_SYMBOL(fb_destroy_modelist);
1017EXPORT_SYMBOL(fb_match_mode);
1018EXPORT_SYMBOL(fb_find_best_mode);
1019EXPORT_SYMBOL(fb_find_nearest_mode);
1020EXPORT_SYMBOL(fb_videomode_to_modelist);
1021EXPORT_SYMBOL(fb_find_mode);