Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
modedb.c
Go to the documentation of this file.
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 <[email protected]>
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/slab.h>
16 #include <linux/fb.h>
17 #include <linux/kernel.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, __func__ , ## args)
28 #else
29 #define DPRINTK(fmt, args...)
30 #endif
31 
32 const char *fb_mode_option;
33 EXPORT_SYMBOL_GPL(fb_mode_option);
34 
35 /*
36  * Standard video mode definitions (taken from XFree86)
37  */
38 
39 static const struct fb_videomode modedb[] = {
40 
41  /* 640x400 @ 70 Hz, 31.5 kHz hsync */
42  { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0,
43  FB_VMODE_NONINTERLACED },
44 
45  /* 640x480 @ 60 Hz, 31.5 kHz hsync */
46  { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0,
47  FB_VMODE_NONINTERLACED },
48 
49  /* 800x600 @ 56 Hz, 35.15 kHz hsync */
50  { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0,
51  FB_VMODE_NONINTERLACED },
52 
53  /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
54  { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0,
55  FB_VMODE_INTERLACED },
56 
57  /* 640x400 @ 85 Hz, 37.86 kHz hsync */
58  { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
59  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED },
60 
61  /* 640x480 @ 72 Hz, 36.5 kHz hsync */
62  { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0,
63  FB_VMODE_NONINTERLACED },
64 
65  /* 640x480 @ 75 Hz, 37.50 kHz hsync */
66  { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0,
67  FB_VMODE_NONINTERLACED },
68 
69  /* 800x600 @ 60 Hz, 37.8 kHz hsync */
70  { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
71  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
72  FB_VMODE_NONINTERLACED },
73 
74  /* 640x480 @ 85 Hz, 43.27 kHz hsync */
75  { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0,
76  FB_VMODE_NONINTERLACED },
77 
78  /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
79  { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0,
80  FB_VMODE_INTERLACED },
81  /* 800x600 @ 72 Hz, 48.0 kHz hsync */
82  { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
83  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
84  FB_VMODE_NONINTERLACED },
85 
86  /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
87  { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0,
88  FB_VMODE_NONINTERLACED },
89 
90  /* 640x480 @ 100 Hz, 53.01 kHz hsync */
91  { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0,
92  FB_VMODE_NONINTERLACED },
93 
94  /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
95  { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0,
96  FB_VMODE_NONINTERLACED },
97 
98  /* 800x600 @ 85 Hz, 55.84 kHz hsync */
99  { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0,
100  FB_VMODE_NONINTERLACED },
101 
102  /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
103  { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0,
104  FB_VMODE_NONINTERLACED },
105 
106  /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
107  { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0,
108  FB_VMODE_INTERLACED },
109 
110  /* 800x600 @ 100 Hz, 64.02 kHz hsync */
111  { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0,
112  FB_VMODE_NONINTERLACED },
113 
114  /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
115  { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0,
116  FB_VMODE_NONINTERLACED },
117 
118  /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
119  { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0,
120  FB_VMODE_NONINTERLACED },
121 
122  /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
123  { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0,
124  FB_VMODE_NONINTERLACED },
125 
126  /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
127  { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0,
128  FB_VMODE_NONINTERLACED },
129 
130  /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
131  { NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13,
132  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
133  FB_VMODE_NONINTERLACED },
134 
135  /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
136  { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
137  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
138  FB_VMODE_NONINTERLACED },
139 
140  /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
141  { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0,
142  FB_VMODE_NONINTERLACED },
143 
144  /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
145  { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0,
146  FB_VMODE_NONINTERLACED },
147 
148  /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
149  { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0,
150  FB_VMODE_NONINTERLACED },
151 
152  /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
153  { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
154  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
155  FB_VMODE_NONINTERLACED },
156 
157  /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
158  { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0,
159  FB_VMODE_NONINTERLACED },
160 
161  /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
162  { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0,
163  FB_VMODE_NONINTERLACED },
164 
165  /* 1024x768 @ 100Hz, 80.21 kHz hsync */
166  { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0,
167  FB_VMODE_NONINTERLACED },
168 
169  /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
170  { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0,
171  FB_VMODE_NONINTERLACED },
172 
173  /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
174  { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0,
175  FB_VMODE_NONINTERLACED },
176 
177  /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
178  { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0,
179  FB_VMODE_NONINTERLACED },
180 
181  /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
182  { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
183  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
184  FB_VMODE_NONINTERLACED },
185 
186  /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
187  { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
188  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
189  FB_VMODE_NONINTERLACED },
190 
191  /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
192  { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,
193  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
194  FB_VMODE_NONINTERLACED },
195 
196  /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
197  { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
198  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
199  FB_VMODE_NONINTERLACED },
200 
201  /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
202  { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0,
203  FB_VMODE_NONINTERLACED },
204 
205  /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
206  { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
207  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
208  FB_VMODE_NONINTERLACED },
209 
210  /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
211  { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
212  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
213  FB_VMODE_NONINTERLACED },
214 
215  /* 512x384 @ 78 Hz, 31.50 kHz hsync */
216  { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0,
217  FB_VMODE_NONINTERLACED },
218 
219  /* 512x384 @ 85 Hz, 34.38 kHz hsync */
220  { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0,
221  FB_VMODE_NONINTERLACED },
222 
223  /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
224  { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0,
225  FB_VMODE_DOUBLE },
226 
227  /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
228  { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0,
229  FB_VMODE_DOUBLE },
230 
231  /* 320x240 @ 72 Hz, 36.5 kHz hsync */
232  { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0,
233  FB_VMODE_DOUBLE },
234 
235  /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
236  { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0,
237  FB_VMODE_DOUBLE },
238 
239  /* 400x300 @ 60 Hz, 37.8 kHz hsync */
240  { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0,
241  FB_VMODE_DOUBLE },
242 
243  /* 400x300 @ 72 Hz, 48.0 kHz hsync */
244  { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0,
245  FB_VMODE_DOUBLE },
246 
247  /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
248  { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0,
249  FB_VMODE_DOUBLE },
250 
251  /* 480x300 @ 60 Hz, 37.8 kHz hsync */
252  { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0,
253  FB_VMODE_DOUBLE },
254 
255  /* 480x300 @ 63 Hz, 39.6 kHz hsync */
256  { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0,
257  FB_VMODE_DOUBLE },
258 
259  /* 480x300 @ 72 Hz, 48.0 kHz hsync */
260  { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0,
261  FB_VMODE_DOUBLE },
262 
263  /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
264  { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
265  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
266  FB_VMODE_NONINTERLACED },
267 
268  /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
269  { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,
270  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
271  FB_VMODE_NONINTERLACED },
272 
273  /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
274  { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0,
275  FB_VMODE_NONINTERLACED },
276 
277  /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
278  { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0,
279  FB_VMODE_NONINTERLACED },
280 
281  /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
282  { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0,
283  FB_VMODE_INTERLACED },
284 
285  /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
286  { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0,
287  FB_VMODE_INTERLACED },
288 
289  /* 864x480 @ 60 Hz, 35.15 kHz hsync */
290  { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0,
291  0, FB_VMODE_NONINTERLACED },
292 };
293 
294 #ifdef CONFIG_FB_MODE_HELPERS
295 const struct fb_videomode cea_modes[64] = {
296  /* #1: [email protected]/60Hz */
297  [1] = {
298  NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0,
299  FB_VMODE_NONINTERLACED, 0,
300  },
301  /* #3: [email protected]/60Hz */
302  [3] = {
303  NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0,
304  FB_VMODE_NONINTERLACED, 0,
305  },
306  /* #5: [email protected]/60Hz */
307  [5] = {
308  NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5,
309  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
310  FB_VMODE_INTERLACED, 0,
311  },
312  /* #7: 720(1440)[email protected]/60Hz */
313  [7] = {
314  NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0,
315  FB_VMODE_INTERLACED, 0,
316  },
317  /* #9: 720(1440)[email protected]/60Hz */
318  [9] = {
319  NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0,
320  FB_VMODE_NONINTERLACED, 0,
321  },
322  /* #18: 720x576pH@50Hz */
323  [18] = {
324  NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0,
325  FB_VMODE_NONINTERLACED, 0,
326  },
327  /* #19: 1280x720p@50Hz */
328  [19] = {
329  NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5,
330  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
331  FB_VMODE_NONINTERLACED, 0,
332  },
333  /* #20: 1920x1080i@50Hz */
334  [20] = {
335  NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5,
336  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
337  FB_VMODE_INTERLACED, 0,
338  },
339  /* #32: [email protected]/24Hz */
340  [32] = {
341  NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5,
342  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
343  FB_VMODE_NONINTERLACED, 0,
344  },
345  /* #35: (2880)[email protected]/60Hz */
346  [35] = {
347  NULL, 60, 2880, 480, 9250, 240, 64, 30, 9, 248, 6, 0,
348  FB_VMODE_NONINTERLACED, 0,
349  },
350 };
351 
352 const struct fb_videomode vesa_modes[] = {
353  /* 0 640x350-85 VESA */
354  { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
355  FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
356  /* 1 640x400-85 VESA */
357  { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
358  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
359  /* 2 720x400-85 VESA */
360  { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
361  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
362  /* 3 640x480-60 VESA */
363  { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
364  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
365  /* 4 640x480-72 VESA */
366  { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
367  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
368  /* 5 640x480-75 VESA */
369  { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
370  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
371  /* 6 640x480-85 VESA */
372  { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
373  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
374  /* 7 800x600-56 VESA */
375  { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
376  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
377  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
378  /* 8 800x600-60 VESA */
379  { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
380  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
381  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
382  /* 9 800x600-72 VESA */
383  { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
384  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
385  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
386  /* 10 800x600-75 VESA */
387  { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
388  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
389  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
390  /* 11 800x600-85 VESA */
391  { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
392  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
393  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
394  /* 12 1024x768i-43 VESA */
395  { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
396  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
397  FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
398  /* 13 1024x768-60 VESA */
399  { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
400  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
401  /* 14 1024x768-70 VESA */
402  { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
403  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
404  /* 15 1024x768-75 VESA */
405  { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
406  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
407  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
408  /* 16 1024x768-85 VESA */
409  { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
410  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
411  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
412  /* 17 1152x864-75 VESA */
413  { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
414  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
415  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
416  /* 18 1280x960-60 VESA */
417  { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
418  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
419  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
420  /* 19 1280x960-85 VESA */
421  { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
422  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
423  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
424  /* 20 1280x1024-60 VESA */
425  { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
426  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
427  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
428  /* 21 1280x1024-75 VESA */
429  { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
430  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
431  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
432  /* 22 1280x1024-85 VESA */
433  { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
434  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
435  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
436  /* 23 1600x1200-60 VESA */
437  { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
438  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
439  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
440  /* 24 1600x1200-65 VESA */
441  { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
442  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
443  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
444  /* 25 1600x1200-70 VESA */
445  { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
446  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
447  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
448  /* 26 1600x1200-75 VESA */
449  { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
450  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
451  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
452  /* 27 1600x1200-85 VESA */
453  { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
454  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
455  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
456  /* 28 1792x1344-60 VESA */
457  { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
458  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
459  /* 29 1792x1344-75 VESA */
460  { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
461  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
462  /* 30 1856x1392-60 VESA */
463  { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
464  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
465  /* 31 1856x1392-75 VESA */
466  { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
467  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
468  /* 32 1920x1440-60 VESA */
469  { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
470  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
471  /* 33 1920x1440-75 VESA */
472  { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
473  FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
474 };
475 EXPORT_SYMBOL(vesa_modes);
476 #endif /* CONFIG_FB_MODE_HELPERS */
477 
491 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
492  const struct fb_videomode *mode, unsigned int bpp)
493 {
494  int err = 0;
495 
496  DPRINTK("Trying mode %s %dx%d-%d@%d\n",
497  mode->name ? mode->name : "noname",
498  mode->xres, mode->yres, bpp, mode->refresh);
499  var->xres = mode->xres;
500  var->yres = mode->yres;
501  var->xres_virtual = mode->xres;
502  var->yres_virtual = mode->yres;
503  var->xoffset = 0;
504  var->yoffset = 0;
505  var->bits_per_pixel = bpp;
506  var->activate |= FB_ACTIVATE_TEST;
507  var->pixclock = mode->pixclock;
508  var->left_margin = mode->left_margin;
509  var->right_margin = mode->right_margin;
510  var->upper_margin = mode->upper_margin;
511  var->lower_margin = mode->lower_margin;
512  var->hsync_len = mode->hsync_len;
513  var->vsync_len = mode->vsync_len;
514  var->sync = mode->sync;
515  var->vmode = mode->vmode;
516  if (info->fbops->fb_check_var)
517  err = info->fbops->fb_check_var(var, info);
518  var->activate &= ~FB_ACTIVATE_TEST;
519  return err;
520 }
521 
564 int fb_find_mode(struct fb_var_screeninfo *var,
565  struct fb_info *info, const char *mode_option,
566  const struct fb_videomode *db, unsigned int dbsize,
567  const struct fb_videomode *default_mode,
568  unsigned int default_bpp)
569 {
570  int i;
571 
572  /* Set up defaults */
573  if (!db) {
574  db = modedb;
575  dbsize = ARRAY_SIZE(modedb);
576  }
577 
578  if (!default_mode)
579  default_mode = &db[0];
580 
581  if (!default_bpp)
582  default_bpp = 8;
583 
584  /* Did the user specify a video mode? */
585  if (!mode_option)
586  mode_option = fb_mode_option;
587  if (mode_option) {
588  const char *name = mode_option;
589  unsigned int namelen = strlen(name);
590  int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
591  unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
592  int yres_specified = 0, cvt = 0, rb = 0, interlace = 0;
593  int margins = 0;
594  u32 best, diff, tdiff;
595 
596  for (i = namelen-1; i >= 0; i--) {
597  switch (name[i]) {
598  case '@':
599  namelen = i;
600  if (!refresh_specified && !bpp_specified &&
601  !yres_specified) {
602  refresh = simple_strtol(&name[i+1], NULL,
603  10);
604  refresh_specified = 1;
605  if (cvt || rb)
606  cvt = 0;
607  } else
608  goto done;
609  break;
610  case '-':
611  namelen = i;
612  if (!bpp_specified && !yres_specified) {
613  bpp = simple_strtol(&name[i+1], NULL,
614  10);
615  bpp_specified = 1;
616  if (cvt || rb)
617  cvt = 0;
618  } else
619  goto done;
620  break;
621  case 'x':
622  if (!yres_specified) {
623  yres = simple_strtol(&name[i+1], NULL,
624  10);
625  yres_specified = 1;
626  } else
627  goto done;
628  break;
629  case '0' ... '9':
630  break;
631  case 'M':
632  if (!yres_specified)
633  cvt = 1;
634  break;
635  case 'R':
636  if (!cvt)
637  rb = 1;
638  break;
639  case 'm':
640  if (!cvt)
641  margins = 1;
642  break;
643  case 'i':
644  if (!cvt)
645  interlace = 1;
646  break;
647  default:
648  goto done;
649  }
650  }
651  if (i < 0 && yres_specified) {
652  xres = simple_strtol(name, NULL, 10);
653  res_specified = 1;
654  }
655 done:
656  if (cvt) {
657  struct fb_videomode cvt_mode;
658  int ret;
659 
660  DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
661  (refresh) ? refresh : 60,
662  (rb) ? " reduced blanking" : "",
663  (margins) ? " with margins" : "",
664  (interlace) ? " interlaced" : "");
665 
666  memset(&cvt_mode, 0, sizeof(cvt_mode));
667  cvt_mode.xres = xres;
668  cvt_mode.yres = yres;
669  cvt_mode.refresh = (refresh) ? refresh : 60;
670 
671  if (interlace)
672  cvt_mode.vmode |= FB_VMODE_INTERLACED;
673  else
674  cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
675 
676  ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
677 
678  if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
679  DPRINTK("modedb CVT: CVT mode ok\n");
680  return 1;
681  }
682 
683  DPRINTK("CVT mode invalid, getting mode from database\n");
684  }
685 
686  DPRINTK("Trying specified video mode%s %ix%i\n",
687  refresh_specified ? "" : " (ignoring refresh rate)",
688  xres, yres);
689 
690  if (!refresh_specified) {
691  /*
692  * If the caller has provided a custom mode database and
693  * a valid monspecs structure, we look for the mode with
694  * the highest refresh rate. Otherwise we play it safe
695  * it and try to find a mode with a refresh rate closest
696  * to the standard 60 Hz.
697  */
698  if (db != modedb &&
699  info->monspecs.vfmin && info->monspecs.vfmax &&
700  info->monspecs.hfmin && info->monspecs.hfmax &&
701  info->monspecs.dclkmax) {
702  refresh = 1000;
703  } else {
704  refresh = 60;
705  }
706  }
707 
708  diff = -1;
709  best = -1;
710  for (i = 0; i < dbsize; i++) {
711  if ((name_matches(db[i], name, namelen) ||
712  (res_specified && res_matches(db[i], xres, yres))) &&
713  !fb_try_mode(var, info, &db[i], bpp)) {
714  if (refresh_specified && db[i].refresh == refresh)
715  return 1;
716 
717  if (abs(db[i].refresh - refresh) < diff) {
718  diff = abs(db[i].refresh - refresh);
719  best = i;
720  }
721  }
722  }
723  if (best != -1) {
724  fb_try_mode(var, info, &db[best], bpp);
725  return (refresh_specified) ? 2 : 1;
726  }
727 
728  diff = 2 * (xres + yres);
729  best = -1;
730  DPRINTK("Trying best-fit modes\n");
731  for (i = 0; i < dbsize; i++) {
732  DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
733  if (!fb_try_mode(var, info, &db[i], bpp)) {
734  tdiff = abs(db[i].xres - xres) +
735  abs(db[i].yres - yres);
736 
737  /*
738  * Penalize modes with resolutions smaller
739  * than requested.
740  */
741  if (xres > db[i].xres || yres > db[i].yres)
742  tdiff += xres + yres;
743 
744  if (diff > tdiff) {
745  diff = tdiff;
746  best = i;
747  }
748  }
749  }
750  if (best != -1) {
751  fb_try_mode(var, info, &db[best], bpp);
752  return 5;
753  }
754  }
755 
756  DPRINTK("Trying default video mode\n");
757  if (!fb_try_mode(var, info, default_mode, default_bpp))
758  return 3;
759 
760  DPRINTK("Trying all modes\n");
761  for (i = 0; i < dbsize; i++)
762  if (!fb_try_mode(var, info, &db[i], default_bpp))
763  return 4;
764 
765  DPRINTK("No valid mode found\n");
766  return 0;
767 }
768 
774 void fb_var_to_videomode(struct fb_videomode *mode,
775  const struct fb_var_screeninfo *var)
776 {
777  u32 pixclock, hfreq, htotal, vtotal;
778 
779  mode->name = NULL;
780  mode->xres = var->xres;
781  mode->yres = var->yres;
782  mode->pixclock = var->pixclock;
783  mode->hsync_len = var->hsync_len;
784  mode->vsync_len = var->vsync_len;
785  mode->left_margin = var->left_margin;
786  mode->right_margin = var->right_margin;
787  mode->upper_margin = var->upper_margin;
788  mode->lower_margin = var->lower_margin;
789  mode->sync = var->sync;
790  mode->vmode = var->vmode & FB_VMODE_MASK;
791  mode->flag = FB_MODE_IS_FROM_VAR;
792  mode->refresh = 0;
793 
794  if (!var->pixclock)
795  return;
796 
797  pixclock = PICOS2KHZ(var->pixclock) * 1000;
798 
799  htotal = var->xres + var->right_margin + var->hsync_len +
800  var->left_margin;
801  vtotal = var->yres + var->lower_margin + var->vsync_len +
802  var->upper_margin;
803 
804  if (var->vmode & FB_VMODE_INTERLACED)
805  vtotal /= 2;
806  if (var->vmode & FB_VMODE_DOUBLE)
807  vtotal *= 2;
808 
809  hfreq = pixclock/htotal;
810  mode->refresh = hfreq/vtotal;
811 }
812 
818 void fb_videomode_to_var(struct fb_var_screeninfo *var,
819  const struct fb_videomode *mode)
820 {
821  var->xres = mode->xres;
822  var->yres = mode->yres;
823  var->xres_virtual = mode->xres;
824  var->yres_virtual = mode->yres;
825  var->xoffset = 0;
826  var->yoffset = 0;
827  var->pixclock = mode->pixclock;
828  var->left_margin = mode->left_margin;
829  var->right_margin = mode->right_margin;
830  var->upper_margin = mode->upper_margin;
831  var->lower_margin = mode->lower_margin;
832  var->hsync_len = mode->hsync_len;
833  var->vsync_len = mode->vsync_len;
834  var->sync = mode->sync;
835  var->vmode = mode->vmode & FB_VMODE_MASK;
836 }
837 
846 int fb_mode_is_equal(const struct fb_videomode *mode1,
847  const struct fb_videomode *mode2)
848 {
849  return (mode1->xres == mode2->xres &&
850  mode1->yres == mode2->yres &&
851  mode1->pixclock == mode2->pixclock &&
852  mode1->hsync_len == mode2->hsync_len &&
853  mode1->vsync_len == mode2->vsync_len &&
854  mode1->left_margin == mode2->left_margin &&
855  mode1->right_margin == mode2->right_margin &&
856  mode1->upper_margin == mode2->upper_margin &&
857  mode1->lower_margin == mode2->lower_margin &&
858  mode1->sync == mode2->sync &&
859  mode1->vmode == mode2->vmode);
860 }
861 
879 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
880  struct list_head *head)
881 {
882  struct list_head *pos;
883  struct fb_modelist *modelist;
884  struct fb_videomode *mode, *best = NULL;
885  u32 diff = -1;
886 
887  list_for_each(pos, head) {
888  u32 d;
889 
890  modelist = list_entry(pos, struct fb_modelist, list);
891  mode = &modelist->mode;
892 
893  if (mode->xres >= var->xres && mode->yres >= var->yres) {
894  d = (mode->xres - var->xres) +
895  (mode->yres - var->yres);
896  if (diff > d) {
897  diff = d;
898  best = mode;
899  } else if (diff == d && best &&
900  mode->refresh > best->refresh)
901  best = mode;
902  }
903  }
904  return best;
905 }
906 
917 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
918  struct list_head *head)
919 {
920  struct list_head *pos;
921  struct fb_modelist *modelist;
922  struct fb_videomode *cmode, *best = NULL;
923  u32 diff = -1, diff_refresh = -1;
924 
925  list_for_each(pos, head) {
926  u32 d;
927 
928  modelist = list_entry(pos, struct fb_modelist, list);
929  cmode = &modelist->mode;
930 
931  d = abs(cmode->xres - mode->xres) +
932  abs(cmode->yres - mode->yres);
933  if (diff > d) {
934  diff = d;
935  diff_refresh = abs(cmode->refresh - mode->refresh);
936  best = cmode;
937  } else if (diff == d) {
938  d = abs(cmode->refresh - mode->refresh);
939  if (diff_refresh > d) {
940  diff_refresh = d;
941  best = cmode;
942  }
943  }
944  }
945 
946  return best;
947 }
948 
957 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
958  struct list_head *head)
959 {
960  struct list_head *pos;
961  struct fb_modelist *modelist;
962  struct fb_videomode *m, mode;
963 
964  fb_var_to_videomode(&mode, var);
965  list_for_each(pos, head) {
966  modelist = list_entry(pos, struct fb_modelist, list);
967  m = &modelist->mode;
968  if (fb_mode_is_equal(m, &mode))
969  return m;
970  }
971  return NULL;
972 }
973 
982 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
983 {
984  struct list_head *pos;
985  struct fb_modelist *modelist;
986  struct fb_videomode *m;
987  int found = 0;
988 
989  list_for_each(pos, head) {
990  modelist = list_entry(pos, struct fb_modelist, list);
991  m = &modelist->mode;
992  if (fb_mode_is_equal(m, mode)) {
993  found = 1;
994  break;
995  }
996  }
997  if (!found) {
998  modelist = kmalloc(sizeof(struct fb_modelist),
999  GFP_KERNEL);
1000 
1001  if (!modelist)
1002  return -ENOMEM;
1003  modelist->mode = *mode;
1004  list_add(&modelist->list, head);
1005  }
1006  return 0;
1007 }
1008 
1017 void fb_delete_videomode(const struct fb_videomode *mode,
1018  struct list_head *head)
1019 {
1020  struct list_head *pos, *n;
1021  struct fb_modelist *modelist;
1022  struct fb_videomode *m;
1023 
1024  list_for_each_safe(pos, n, head) {
1025  modelist = list_entry(pos, struct fb_modelist, list);
1026  m = &modelist->mode;
1027  if (fb_mode_is_equal(m, mode)) {
1028  list_del(pos);
1029  kfree(pos);
1030  }
1031  }
1032 }
1033 
1038 void fb_destroy_modelist(struct list_head *head)
1039 {
1040  struct list_head *pos, *n;
1041 
1042  list_for_each_safe(pos, n, head) {
1043  list_del(pos);
1044  kfree(pos);
1045  }
1046 }
1047 EXPORT_SYMBOL_GPL(fb_destroy_modelist);
1048 
1055 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1056  struct list_head *head)
1057 {
1058  int i;
1059 
1060  INIT_LIST_HEAD(head);
1061 
1062  for (i = 0; i < num; i++) {
1063  if (fb_add_videomode(&modedb[i], head))
1064  return;
1065  }
1066 }
1067 
1068 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1069  struct list_head *head)
1070 {
1071  struct list_head *pos;
1072  struct fb_modelist *modelist;
1073  const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
1074  int first = 0;
1075 
1076  if (!head->prev || !head->next || list_empty(head))
1077  goto finished;
1078 
1079  /* get the first detailed mode and the very first mode */
1080  list_for_each(pos, head) {
1081  modelist = list_entry(pos, struct fb_modelist, list);
1082  m = &modelist->mode;
1083 
1084  if (!first) {
1085  m1 = m;
1086  first = 1;
1087  }
1088 
1089  if (m->flag & FB_MODE_IS_FIRST) {
1090  md = m;
1091  break;
1092  }
1093  }
1094 
1095  /* first detailed timing is preferred */
1096  if (specs->misc & FB_MISC_1ST_DETAIL) {
1097  best = md;
1098  goto finished;
1099  }
1100 
1101  /* find best mode based on display width and height */
1102  if (specs->max_x && specs->max_y) {
1103  struct fb_var_screeninfo var;
1104 
1105  memset(&var, 0, sizeof(struct fb_var_screeninfo));
1106  var.xres = (specs->max_x * 7200)/254;
1107  var.yres = (specs->max_y * 7200)/254;
1108  m = fb_find_best_mode(&var, head);
1109  if (m) {
1110  best = m;
1111  goto finished;
1112  }
1113  }
1114 
1115  /* use first detailed mode */
1116  if (md) {
1117  best = md;
1118  goto finished;
1119  }
1120 
1121  /* last resort, use the very first mode */
1122  best = m1;
1123 finished:
1124  return best;
1125 }
1126 EXPORT_SYMBOL(fb_find_best_display);
1127 
1128 EXPORT_SYMBOL(fb_videomode_to_var);
1129 EXPORT_SYMBOL(fb_var_to_videomode);
1130 EXPORT_SYMBOL(fb_mode_is_equal);
1131 EXPORT_SYMBOL(fb_add_videomode);
1132 EXPORT_SYMBOL(fb_match_mode);
1133 EXPORT_SYMBOL(fb_find_best_mode);
1134 EXPORT_SYMBOL(fb_find_nearest_mode);
1135 EXPORT_SYMBOL(fb_videomode_to_modelist);
1136 EXPORT_SYMBOL(fb_find_mode);
1137 EXPORT_SYMBOL(fb_find_mode_cvt);
Generated on Thu Jan 10 2013 14:40:46 for Linux Kernel by   doxygen 1.8.2