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/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
30const char *fb_mode_option;
31EXPORT_SYMBOL_GPL(fb_mode_option);
32
33 /*
34 * Standard video mode definitions (taken from XFree86)
35 */
36
37static 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};
269
270#ifdef CONFIG_FB_MODE_HELPERS
271const struct fb_videomode vesa_modes[] = {
272 /* 0 640x350-85 VESA */
273 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
274 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
275 /* 1 640x400-85 VESA */
276 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
277 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
278 /* 2 720x400-85 VESA */
279 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
280 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
281 /* 3 640x480-60 VESA */
282 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
283 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
284 /* 4 640x480-72 VESA */
285 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
286 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
287 /* 5 640x480-75 VESA */
288 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
289 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
290 /* 6 640x480-85 VESA */
291 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
292 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
293 /* 7 800x600-56 VESA */
294 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
295 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
296 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
297 /* 8 800x600-60 VESA */
298 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
299 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
300 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
301 /* 9 800x600-72 VESA */
302 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
303 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
304 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
305 /* 10 800x600-75 VESA */
306 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
307 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
308 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
309 /* 11 800x600-85 VESA */
310 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
311 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
312 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
313 /* 12 1024x768i-43 VESA */
314 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
315 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
316 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
317 /* 13 1024x768-60 VESA */
318 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
319 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
320 /* 14 1024x768-70 VESA */
321 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
322 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
323 /* 15 1024x768-75 VESA */
324 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
326 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
327 /* 16 1024x768-85 VESA */
328 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
329 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
330 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
331 /* 17 1152x864-75 VESA */
332 { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3,
333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
335 /* 18 1280x960-60 VESA */
336 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
339 /* 19 1280x960-85 VESA */
340 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
342 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
343 /* 20 1280x1024-60 VESA */
344 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
345 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
346 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
347 /* 21 1280x1024-75 VESA */
348 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
349 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
350 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
351 /* 22 1280x1024-85 VESA */
352 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
353 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
354 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
355 /* 23 1600x1200-60 VESA */
356 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
357 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
358 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
359 /* 24 1600x1200-65 VESA */
360 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
361 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
362 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
363 /* 25 1600x1200-70 VESA */
364 { NULL, 70, 1600, 1200, 5291, 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 /* 26 1600x1200-75 VESA */
368 { NULL, 75, 1600, 1200, 4938, 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 /* 27 1600x1200-85 VESA */
372 { NULL, 85, 1600, 1200, 4357, 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 /* 28 1792x1344-60 VESA */
376 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
377 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
378 /* 29 1792x1344-75 VESA */
379 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
380 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
381 /* 30 1856x1392-60 VESA */
382 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
383 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
384 /* 31 1856x1392-75 VESA */
385 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
386 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
387 /* 32 1920x1440-60 VESA */
388 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
389 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
390 /* 33 1920x1440-75 VESA */
391 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
392 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
393};
394EXPORT_SYMBOL(vesa_modes);
395#endif /* CONFIG_FB_MODE_HELPERS */
396
397static int my_atoi(const char *name)
398{
399 int val = 0;
400
401 for (;; name++) {
402 switch (*name) {
403 case '0' ... '9':
404 val = 10*val+(*name-'0');
405 break;
406 default:
407 return val;
408 }
409 }
410}
411
412/**
413 * fb_try_mode - test a video mode
414 * @var: frame buffer user defined part of display
415 * @info: frame buffer info structure
416 * @mode: frame buffer video mode structure
417 * @bpp: color depth in bits per pixel
418 *
419 * Tries a video mode to test it's validity for device @info.
420 *
421 * Returns 1 on success.
422 *
423 */
424
425static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
426 const struct fb_videomode *mode, unsigned int bpp)
427{
428 int err = 0;
429
430 DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
431 mode->xres, mode->yres, bpp, mode->refresh);
432 var->xres = mode->xres;
433 var->yres = mode->yres;
434 var->xres_virtual = mode->xres;
435 var->yres_virtual = mode->yres;
436 var->xoffset = 0;
437 var->yoffset = 0;
438 var->bits_per_pixel = bpp;
439 var->activate |= FB_ACTIVATE_TEST;
440 var->pixclock = mode->pixclock;
441 var->left_margin = mode->left_margin;
442 var->right_margin = mode->right_margin;
443 var->upper_margin = mode->upper_margin;
444 var->lower_margin = mode->lower_margin;
445 var->hsync_len = mode->hsync_len;
446 var->vsync_len = mode->vsync_len;
447 var->sync = mode->sync;
448 var->vmode = mode->vmode;
449 if (info->fbops->fb_check_var)
450 err = info->fbops->fb_check_var(var, info);
451 var->activate &= ~FB_ACTIVATE_TEST;
452 return err;
453}
454
455/**
456 * fb_find_mode - finds a valid video mode
457 * @var: frame buffer user defined part of display
458 * @info: frame buffer info structure
459 * @mode_option: string video mode to find
460 * @db: video mode database
461 * @dbsize: size of @db
462 * @default_mode: default video mode to fall back to
463 * @default_bpp: default color depth in bits per pixel
464 *
465 * Finds a suitable video mode, starting with the specified mode
466 * in @mode_option with fallback to @default_mode. If
467 * @default_mode fails, all modes in the video mode database will
468 * be tried.
469 *
470 * Valid mode specifiers for @mode_option:
471 *
472 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
473 * <name>[-<bpp>][@<refresh>]
474 *
475 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
476 * <name> a string.
477 *
478 * If 'M' is present after yres (and before refresh/bpp if present),
479 * the function will compute the timings using VESA(tm) Coordinated
480 * Video Timings (CVT). If 'R' is present after 'M', will compute with
481 * reduced blanking (for flatpanels). If 'i' is present, compute
482 * interlaced mode. If 'm' is present, add margins equal to 1.8%
483 * of xres rounded down to 8 pixels, and 1.8% of yres. The char
484 * 'i' and 'm' must be after 'M' and 'R'. Example:
485 *
486 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
487 *
488 * NOTE: The passed struct @var is _not_ cleared! This allows you
489 * to supply values for e.g. the grayscale and accel_flags fields.
490 *
491 * Returns zero for failure, 1 if using specified @mode_option,
492 * 2 if using specified @mode_option with an ignored refresh rate,
493 * 3 if default mode is used, 4 if fall back to any valid mode.
494 *
495 */
496
497int fb_find_mode(struct fb_var_screeninfo *var,
498 struct fb_info *info, const char *mode_option,
499 const struct fb_videomode *db, unsigned int dbsize,
500 const struct fb_videomode *default_mode,
501 unsigned int default_bpp)
502{
503 int i;
504
505 /* Set up defaults */
506 if (!db) {
507 db = modedb;
508 dbsize = ARRAY_SIZE(modedb);
509 }
510
511 if (!default_mode)
512 default_mode = &db[0];
513
514 if (!default_bpp)
515 default_bpp = 8;
516
517 /* Did the user specify a video mode? */
518 if (!mode_option)
519 mode_option = fb_mode_option;
520 if (mode_option) {
521 const char *name = mode_option;
522 unsigned int namelen = strlen(name);
523 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
524 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
525 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
526 u32 best, diff, tdiff;
527
528 for (i = namelen-1; i >= 0; i--) {
529 switch (name[i]) {
530 case '@':
531 namelen = i;
532 if (!refresh_specified && !bpp_specified &&
533 !yres_specified) {
534 refresh = my_atoi(&name[i+1]);
535 refresh_specified = 1;
536 if (cvt || rb)
537 cvt = 0;
538 } else
539 goto done;
540 break;
541 case '-':
542 namelen = i;
543 if (!bpp_specified && !yres_specified) {
544 bpp = my_atoi(&name[i+1]);
545 bpp_specified = 1;
546 if (cvt || rb)
547 cvt = 0;
548 } else
549 goto done;
550 break;
551 case 'x':
552 if (!yres_specified) {
553 yres = my_atoi(&name[i+1]);
554 yres_specified = 1;
555 } else
556 goto done;
557 break;
558 case '0' ... '9':
559 break;
560 case 'M':
561 if (!yres_specified)
562 cvt = 1;
563 break;
564 case 'R':
565 if (!cvt)
566 rb = 1;
567 break;
568 case 'm':
569 if (!cvt)
570 margins = 1;
571 break;
572 case 'i':
573 if (!cvt)
574 interlace = 1;
575 break;
576 default:
577 goto done;
578 }
579 }
580 if (i < 0 && yres_specified) {
581 xres = my_atoi(name);
582 res_specified = 1;
583 }
584done:
585 if (cvt) {
586 struct fb_videomode cvt_mode;
587 int ret;
588
589 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
590 (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
591 "", (margins) ? " with margins" : "", (interlace) ?
592 " interlaced" : "");
593
594 memset(&cvt_mode, 0, sizeof(cvt_mode));
595 cvt_mode.xres = xres;
596 cvt_mode.yres = yres;
597 cvt_mode.refresh = (refresh) ? refresh : 60;
598
599 if (interlace)
600 cvt_mode.vmode |= FB_VMODE_INTERLACED;
601 else
602 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
603
604 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
605
606 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
607 DPRINTK("modedb CVT: CVT mode ok\n");
608 return 1;
609 }
610
611 DPRINTK("CVT mode invalid, getting mode from database\n");
612 }
613
614 DPRINTK("Trying specified video mode%s %ix%i\n",
615 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
616
617 if (!refresh_specified) {
618 /*
619 * If the caller has provided a custom mode database and a
620 * valid monspecs structure, we look for the mode with the
621 * highest refresh rate. Otherwise we play it safe it and
622 * try to find a mode with a refresh rate closest to the
623 * standard 60 Hz.
624 */
625 if (db != modedb &&
626 info->monspecs.vfmin && info->monspecs.vfmax &&
627 info->monspecs.hfmin && info->monspecs.hfmax &&
628 info->monspecs.dclkmax) {
629 refresh = 1000;
630 } else {
631 refresh = 60;
632 }
633 }
634
635 diff = -1;
636 best = -1;
637 for (i = 0; i < dbsize; i++) {
638 if ((name_matches(db[i], name, namelen) ||
639 (res_specified && res_matches(db[i], xres, yres))) &&
640 !fb_try_mode(var, info, &db[i], bpp)) {
641 if (refresh_specified && db[i].refresh == refresh) {
642 return 1;
643 } else {
644 if (abs(db[i].refresh - refresh) < diff) {
645 diff = abs(db[i].refresh - refresh);
646 best = i;
647 }
648 }
649 }
650 }
651 if (best != -1) {
652 fb_try_mode(var, info, &db[best], bpp);
653 return (refresh_specified) ? 2 : 1;
654 }
655
656 diff = 2 * (xres + yres);
657 best = -1;
658 DPRINTK("Trying best-fit modes\n");
659 for (i = 0; i < dbsize; i++) {
660 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
661 if (!fb_try_mode(var, info, &db[i], bpp)) {
662 tdiff = abs(db[i].xres - xres) +
663 abs(db[i].yres - yres);
664
665 /*
666 * Penalize modes with resolutions smaller
667 * than requested.
668 */
669 if (xres > db[i].xres || yres > db[i].yres)
670 tdiff += xres + yres;
671
672 if (diff > tdiff) {
673 diff = tdiff;
674 best = i;
675 }
676 }
677 }
678 if (best != -1) {
679 fb_try_mode(var, info, &db[best], bpp);
680 return 5;
681 }
682 }
683
684 DPRINTK("Trying default video mode\n");
685 if (!fb_try_mode(var, info, default_mode, default_bpp))
686 return 3;
687
688 DPRINTK("Trying all modes\n");
689 for (i = 0; i < dbsize; i++)
690 if (!fb_try_mode(var, info, &db[i], default_bpp))
691 return 4;
692
693 DPRINTK("No valid mode found\n");
694 return 0;
695}
696
697/**
698 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
699 * @mode: pointer to struct fb_videomode
700 * @var: pointer to struct fb_var_screeninfo
701 */
702void fb_var_to_videomode(struct fb_videomode *mode,
703 const struct fb_var_screeninfo *var)
704{
705 u32 pixclock, hfreq, htotal, vtotal;
706
707 mode->name = NULL;
708 mode->xres = var->xres;
709 mode->yres = var->yres;
710 mode->pixclock = var->pixclock;
711 mode->hsync_len = var->hsync_len;
712 mode->vsync_len = var->vsync_len;
713 mode->left_margin = var->left_margin;
714 mode->right_margin = var->right_margin;
715 mode->upper_margin = var->upper_margin;
716 mode->lower_margin = var->lower_margin;
717 mode->sync = var->sync;
718 mode->vmode = var->vmode & FB_VMODE_MASK;
719 mode->flag = FB_MODE_IS_FROM_VAR;
720 mode->refresh = 0;
721
722 if (!var->pixclock)
723 return;
724
725 pixclock = PICOS2KHZ(var->pixclock) * 1000;
726
727 htotal = var->xres + var->right_margin + var->hsync_len +
728 var->left_margin;
729 vtotal = var->yres + var->lower_margin + var->vsync_len +
730 var->upper_margin;
731
732 if (var->vmode & FB_VMODE_INTERLACED)
733 vtotal /= 2;
734 if (var->vmode & FB_VMODE_DOUBLE)
735 vtotal *= 2;
736
737 hfreq = pixclock/htotal;
738 mode->refresh = hfreq/vtotal;
739}
740
741/**
742 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
743 * @var: pointer to struct fb_var_screeninfo
744 * @mode: pointer to struct fb_videomode
745 */
746void fb_videomode_to_var(struct fb_var_screeninfo *var,
747 const struct fb_videomode *mode)
748{
749 var->xres = mode->xres;
750 var->yres = mode->yres;
751 var->xres_virtual = mode->xres;
752 var->yres_virtual = mode->yres;
753 var->xoffset = 0;
754 var->yoffset = 0;
755 var->pixclock = mode->pixclock;
756 var->left_margin = mode->left_margin;
757 var->right_margin = mode->right_margin;
758 var->upper_margin = mode->upper_margin;
759 var->lower_margin = mode->lower_margin;
760 var->hsync_len = mode->hsync_len;
761 var->vsync_len = mode->vsync_len;
762 var->sync = mode->sync;
763 var->vmode = mode->vmode & FB_VMODE_MASK;
764}
765
766/**
767 * fb_mode_is_equal - compare 2 videomodes
768 * @mode1: first videomode
769 * @mode2: second videomode
770 *
771 * RETURNS:
772 * 1 if equal, 0 if not
773 */
774int fb_mode_is_equal(const struct fb_videomode *mode1,
775 const struct fb_videomode *mode2)
776{
777 return (mode1->xres == mode2->xres &&
778 mode1->yres == mode2->yres &&
779 mode1->pixclock == mode2->pixclock &&
780 mode1->hsync_len == mode2->hsync_len &&
781 mode1->vsync_len == mode2->vsync_len &&
782 mode1->left_margin == mode2->left_margin &&
783 mode1->right_margin == mode2->right_margin &&
784 mode1->upper_margin == mode2->upper_margin &&
785 mode1->lower_margin == mode2->lower_margin &&
786 mode1->sync == mode2->sync &&
787 mode1->vmode == mode2->vmode);
788}
789
790/**
791 * fb_find_best_mode - find best matching videomode
792 * @var: pointer to struct fb_var_screeninfo
793 * @head: pointer to struct list_head of modelist
794 *
795 * RETURNS:
796 * struct fb_videomode, NULL if none found
797 *
798 * IMPORTANT:
799 * This function assumes that all modelist entries in
800 * info->modelist are valid.
801 *
802 * NOTES:
803 * Finds best matching videomode which has an equal or greater dimension than
804 * var->xres and var->yres. If more than 1 videomode is found, will return
805 * the videomode with the highest refresh rate
806 */
807const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
808 struct list_head *head)
809{
810 struct list_head *pos;
811 struct fb_modelist *modelist;
812 struct fb_videomode *mode, *best = NULL;
813 u32 diff = -1;
814
815 list_for_each(pos, head) {
816 u32 d;
817
818 modelist = list_entry(pos, struct fb_modelist, list);
819 mode = &modelist->mode;
820
821 if (mode->xres >= var->xres && mode->yres >= var->yres) {
822 d = (mode->xres - var->xres) +
823 (mode->yres - var->yres);
824 if (diff > d) {
825 diff = d;
826 best = mode;
827 } else if (diff == d && best &&
828 mode->refresh > best->refresh)
829 best = mode;
830 }
831 }
832 return best;
833}
834
835/**
836 * fb_find_nearest_mode - find closest videomode
837 *
838 * @mode: pointer to struct fb_videomode
839 * @head: pointer to modelist
840 *
841 * Finds best matching videomode, smaller or greater in dimension.
842 * If more than 1 videomode is found, will return the videomode with
843 * the closest refresh rate.
844 */
845const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
846 struct list_head *head)
847{
848 struct list_head *pos;
849 struct fb_modelist *modelist;
850 struct fb_videomode *cmode, *best = NULL;
851 u32 diff = -1, diff_refresh = -1;
852
853 list_for_each(pos, head) {
854 u32 d;
855
856 modelist = list_entry(pos, struct fb_modelist, list);
857 cmode = &modelist->mode;
858
859 d = abs(cmode->xres - mode->xres) +
860 abs(cmode->yres - mode->yres);
861 if (diff > d) {
862 diff = d;
863 best = cmode;
864 } else if (diff == d) {
865 d = abs(cmode->refresh - mode->refresh);
866 if (diff_refresh > d) {
867 diff_refresh = d;
868 best = cmode;
869 }
870 }
871 }
872
873 return best;
874}
875
876/**
877 * fb_match_mode - find a videomode which exactly matches the timings in var
878 * @var: pointer to struct fb_var_screeninfo
879 * @head: pointer to struct list_head of modelist
880 *
881 * RETURNS:
882 * struct fb_videomode, NULL if none found
883 */
884const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
885 struct list_head *head)
886{
887 struct list_head *pos;
888 struct fb_modelist *modelist;
889 struct fb_videomode *m, mode;
890
891 fb_var_to_videomode(&mode, var);
892 list_for_each(pos, head) {
893 modelist = list_entry(pos, struct fb_modelist, list);
894 m = &modelist->mode;
895 if (fb_mode_is_equal(m, &mode))
896 return m;
897 }
898 return NULL;
899}
900
901/**
902 * fb_add_videomode: adds videomode entry to modelist
903 * @mode: videomode to add
904 * @head: struct list_head of modelist
905 *
906 * NOTES:
907 * Will only add unmatched mode entries
908 */
909int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
910{
911 struct list_head *pos;
912 struct fb_modelist *modelist;
913 struct fb_videomode *m;
914 int found = 0;
915
916 list_for_each(pos, head) {
917 modelist = list_entry(pos, struct fb_modelist, list);
918 m = &modelist->mode;
919 if (fb_mode_is_equal(m, mode)) {
920 found = 1;
921 break;
922 }
923 }
924 if (!found) {
925 modelist = kmalloc(sizeof(struct fb_modelist),
926 GFP_KERNEL);
927
928 if (!modelist)
929 return -ENOMEM;
930 modelist->mode = *mode;
931 list_add(&modelist->list, head);
932 }
933 return 0;
934}
935
936/**
937 * fb_delete_videomode: removed videomode entry from modelist
938 * @mode: videomode to remove
939 * @head: struct list_head of modelist
940 *
941 * NOTES:
942 * Will remove all matching mode entries
943 */
944void fb_delete_videomode(const struct fb_videomode *mode,
945 struct list_head *head)
946{
947 struct list_head *pos, *n;
948 struct fb_modelist *modelist;
949 struct fb_videomode *m;
950
951 list_for_each_safe(pos, n, head) {
952 modelist = list_entry(pos, struct fb_modelist, list);
953 m = &modelist->mode;
954 if (fb_mode_is_equal(m, mode)) {
955 list_del(pos);
956 kfree(pos);
957 }
958 }
959}
960
961/**
962 * fb_destroy_modelist: destroy modelist
963 * @head: struct list_head of modelist
964 */
965void fb_destroy_modelist(struct list_head *head)
966{
967 struct list_head *pos, *n;
968
969 list_for_each_safe(pos, n, head) {
970 list_del(pos);
971 kfree(pos);
972 }
973}
974EXPORT_SYMBOL_GPL(fb_destroy_modelist);
975
976/**
977 * fb_videomode_to_modelist: convert mode array to mode list
978 * @modedb: array of struct fb_videomode
979 * @num: number of entries in array
980 * @head: struct list_head of modelist
981 */
982void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
983 struct list_head *head)
984{
985 int i;
986
987 INIT_LIST_HEAD(head);
988
989 for (i = 0; i < num; i++) {
990 if (fb_add_videomode(&modedb[i], head))
991 return;
992 }
993}
994
995const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
996 struct list_head *head)
997{
998 struct list_head *pos;
999 struct fb_modelist *modelist;
1000 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
1001 int first = 0;
1002
1003 if (!head->prev || !head->next || list_empty(head))
1004 goto finished;
1005
1006 /* get the first detailed mode and the very first mode */
1007 list_for_each(pos, head) {
1008 modelist = list_entry(pos, struct fb_modelist, list);
1009 m = &modelist->mode;
1010
1011 if (!first) {
1012 m1 = m;
1013 first = 1;
1014 }
1015
1016 if (m->flag & FB_MODE_IS_FIRST) {
1017 md = m;
1018 break;
1019 }
1020 }
1021
1022 /* first detailed timing is preferred */
1023 if (specs->misc & FB_MISC_1ST_DETAIL) {
1024 best = md;
1025 goto finished;
1026 }
1027
1028 /* find best mode based on display width and height */
1029 if (specs->max_x && specs->max_y) {
1030 struct fb_var_screeninfo var;
1031
1032 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1033 var.xres = (specs->max_x * 7200)/254;
1034 var.yres = (specs->max_y * 7200)/254;
1035 m = fb_find_best_mode(&var, head);
1036 if (m) {
1037 best = m;
1038 goto finished;
1039 }
1040 }
1041
1042 /* use first detailed mode */
1043 if (md) {
1044 best = md;
1045 goto finished;
1046 }
1047
1048 /* last resort, use the very first mode */
1049 best = m1;
1050finished:
1051 return best;
1052}
1053EXPORT_SYMBOL(fb_find_best_display);
1054
1055EXPORT_SYMBOL(fb_videomode_to_var);
1056EXPORT_SYMBOL(fb_var_to_videomode);
1057EXPORT_SYMBOL(fb_mode_is_equal);
1058EXPORT_SYMBOL(fb_add_videomode);
1059EXPORT_SYMBOL(fb_match_mode);
1060EXPORT_SYMBOL(fb_find_best_mode);
1061EXPORT_SYMBOL(fb_find_nearest_mode);
1062EXPORT_SYMBOL(fb_videomode_to_modelist);
1063EXPORT_SYMBOL(fb_find_mode);