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Linux 4.19.133
[linux/fpc-iii.git] / drivers / video / fbdev / core / modedb.c
blob6473e0dfe1464b616ff1999cae7516340456c0d8
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/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 /*
33 * Standard video mode definitions (taken from XFree86)
34 */
35
36 static const struct fb_videomode modedb[] = {
37
38 /* 640x400 @ 70 Hz, 31.5 kHz hsync */
39 { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0,
40 FB_VMODE_NONINTERLACED },
41
42 /* 640x480 @ 60 Hz, 31.5 kHz hsync */
43 { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0,
44 FB_VMODE_NONINTERLACED },
45
46 /* 800x600 @ 56 Hz, 35.15 kHz hsync */
47 { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0,
48 FB_VMODE_NONINTERLACED },
49
50 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
51 { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0,
52 FB_VMODE_INTERLACED },
53
54 /* 640x400 @ 85 Hz, 37.86 kHz hsync */
55 { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
56 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED },
57
58 /* 640x480 @ 72 Hz, 36.5 kHz hsync */
59 { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0,
60 FB_VMODE_NONINTERLACED },
61
62 /* 640x480 @ 75 Hz, 37.50 kHz hsync */
63 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0,
64 FB_VMODE_NONINTERLACED },
65
66 /* 800x600 @ 60 Hz, 37.8 kHz hsync */
67 { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
68 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
69 FB_VMODE_NONINTERLACED },
70
71 /* 640x480 @ 85 Hz, 43.27 kHz hsync */
72 { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0,
73 FB_VMODE_NONINTERLACED },
74
75 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
76 { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0,
77 FB_VMODE_INTERLACED },
78 /* 800x600 @ 72 Hz, 48.0 kHz hsync */
79 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
80 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
81 FB_VMODE_NONINTERLACED },
82
83 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
84 { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0,
85 FB_VMODE_NONINTERLACED },
86
87 /* 640x480 @ 100 Hz, 53.01 kHz hsync */
88 { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0,
89 FB_VMODE_NONINTERLACED },
90
91 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
92 { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0,
93 FB_VMODE_NONINTERLACED },
94
95 /* 800x600 @ 85 Hz, 55.84 kHz hsync */
96 { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0,
97 FB_VMODE_NONINTERLACED },
98
99 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
100 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0,
101 FB_VMODE_NONINTERLACED },
102
103 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
104 { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0,
105 FB_VMODE_INTERLACED },
106
107 /* 800x600 @ 100 Hz, 64.02 kHz hsync */
108 { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0,
109 FB_VMODE_NONINTERLACED },
110
111 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
112 { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0,
113 FB_VMODE_NONINTERLACED },
114
115 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
116 { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0,
117 FB_VMODE_NONINTERLACED },
118
119 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
120 { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0,
121 FB_VMODE_NONINTERLACED },
122
123 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
124 { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0,
125 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,
130 FB_VMODE_NONINTERLACED },
131
132 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
133 { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
134 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
135 FB_VMODE_NONINTERLACED },
136
137 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
138 { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0,
139 FB_VMODE_NONINTERLACED },
140
141 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
142 { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0,
143 FB_VMODE_NONINTERLACED },
144
145 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
146 { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0,
147 FB_VMODE_NONINTERLACED },
148
149 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
150 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
151 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
152 FB_VMODE_NONINTERLACED },
153
154 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
155 { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0,
156 FB_VMODE_NONINTERLACED },
157
158 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
159 { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0,
160 FB_VMODE_NONINTERLACED },
161
162 /* 1024x768 @ 100Hz, 80.21 kHz hsync */
163 { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0,
164 FB_VMODE_NONINTERLACED },
165
166 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
167 { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0,
168 FB_VMODE_NONINTERLACED },
169
170 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
171 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0,
172 FB_VMODE_NONINTERLACED },
173
174 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
175 { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0,
176 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,
181 FB_VMODE_NONINTERLACED },
182
183 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
184 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
185 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
186 FB_VMODE_NONINTERLACED },
187
188 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
189 { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,
190 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
191 FB_VMODE_NONINTERLACED },
192
193 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
194 { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
195 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
196 FB_VMODE_NONINTERLACED },
197
198 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
199 { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0,
200 FB_VMODE_NONINTERLACED },
201
202 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
203 { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
204 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
205 FB_VMODE_NONINTERLACED },
206
207 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
208 { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
209 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
210 FB_VMODE_NONINTERLACED },
211
212 /* 512x384 @ 78 Hz, 31.50 kHz hsync */
213 { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0,
214 FB_VMODE_NONINTERLACED },
215
216 /* 512x384 @ 85 Hz, 34.38 kHz hsync */
217 { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0,
218 FB_VMODE_NONINTERLACED },
219
220 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
221 { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0,
222 FB_VMODE_DOUBLE },
223
224 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
225 { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0,
226 FB_VMODE_DOUBLE },
227
228 /* 320x240 @ 72 Hz, 36.5 kHz hsync */
229 { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0,
230 FB_VMODE_DOUBLE },
231
232 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
233 { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0,
234 FB_VMODE_DOUBLE },
235
236 /* 400x300 @ 60 Hz, 37.8 kHz hsync */
237 { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0,
238 FB_VMODE_DOUBLE },
239
240 /* 400x300 @ 72 Hz, 48.0 kHz hsync */
241 { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0,
242 FB_VMODE_DOUBLE },
243
244 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
245 { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0,
246 FB_VMODE_DOUBLE },
247
248 /* 480x300 @ 60 Hz, 37.8 kHz hsync */
249 { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0,
250 FB_VMODE_DOUBLE },
251
252 /* 480x300 @ 63 Hz, 39.6 kHz hsync */
253 { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0,
254 FB_VMODE_DOUBLE },
255
256 /* 480x300 @ 72 Hz, 48.0 kHz hsync */
257 { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0,
258 FB_VMODE_DOUBLE },
259
260 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
261 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
262 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
263 FB_VMODE_NONINTERLACED },
264
265 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
266 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,
267 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
268 FB_VMODE_NONINTERLACED },
269
270 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
271 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0,
272 FB_VMODE_NONINTERLACED },
273
274 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
275 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0,
276 FB_VMODE_NONINTERLACED },
277
278 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
279 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0,
280 FB_VMODE_INTERLACED },
281
282 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
283 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0,
284 FB_VMODE_INTERLACED },
285
286 /* 864x480 @ 60 Hz, 35.15 kHz hsync */
287 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0,
288 0, FB_VMODE_NONINTERLACED },
289 };
290
291 #ifdef CONFIG_FB_MODE_HELPERS
292 const struct fb_videomode vesa_modes[] = {
293 /* 0 640x350-85 VESA */
294 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
295 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
296 /* 1 640x400-85 VESA */
297 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
298 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
299 /* 2 720x400-85 VESA */
300 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
301 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
302 /* 3 640x480-60 VESA */
303 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
304 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
305 /* 4 640x480-72 VESA */
306 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
307 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
308 /* 5 640x480-75 VESA */
309 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
310 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
311 /* 6 640x480-85 VESA */
312 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
313 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
314 /* 7 800x600-56 VESA */
315 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
316 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
317 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
318 /* 8 800x600-60 VESA */
319 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
320 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
321 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
322 /* 9 800x600-72 VESA */
323 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
324 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
325 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
326 /* 10 800x600-75 VESA */
327 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
328 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
329 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
330 /* 11 800x600-85 VESA */
331 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
332 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
333 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
334 /* 12 1024x768i-43 VESA */
335 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
336 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
337 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
338 /* 13 1024x768-60 VESA */
339 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
340 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
341 /* 14 1024x768-70 VESA */
342 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
343 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
344 /* 15 1024x768-75 VESA */
345 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
346 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
347 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
348 /* 16 1024x768-85 VESA */
349 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
350 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
351 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
352 /* 17 1152x864-75 VESA */
353 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
354 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
355 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
356 /* 18 1280x960-60 VESA */
357 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
358 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
359 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
360 /* 19 1280x960-85 VESA */
361 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
362 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
363 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
364 /* 20 1280x1024-60 VESA */
365 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
366 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
367 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
368 /* 21 1280x1024-75 VESA */
369 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
370 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
371 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
372 /* 22 1280x1024-85 VESA */
373 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
374 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
375 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
376 /* 23 1600x1200-60 VESA */
377 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
378 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
379 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
380 /* 24 1600x1200-65 VESA */
381 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
382 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
383 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
384 /* 25 1600x1200-70 VESA */
385 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
386 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
387 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
388 /* 26 1600x1200-75 VESA */
389 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
390 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
391 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
392 /* 27 1600x1200-85 VESA */
393 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
394 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
395 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
396 /* 28 1792x1344-60 VESA */
397 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
398 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
399 /* 29 1792x1344-75 VESA */
400 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
401 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
402 /* 30 1856x1392-60 VESA */
403 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
404 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
405 /* 31 1856x1392-75 VESA */
406 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
407 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
408 /* 32 1920x1440-60 VESA */
409 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
410 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
411 /* 33 1920x1440-75 VESA */
412 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
413 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
414 /* 34 1920x1200-60 RB VESA */
415 { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6,
416 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
417 /* 35 1920x1200-60 VESA */
418 { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6,
419 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
420 /* 36 1920x1200-75 VESA */
421 { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6,
422 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
423 /* 37 1920x1200-85 VESA */
424 { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6,
425 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
426 /* 38 2560x1600-60 RB VESA */
427 { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6,
428 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
429 /* 39 2560x1600-60 VESA */
430 { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6,
431 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
432 /* 40 2560x1600-75 VESA */
433 { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6,
434 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
435 /* 41 2560x1600-85 VESA */
436 { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6,
437 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
438 /* 42 2560x1600-120 RB VESA */
439 { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6,
440 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
441 };
442 EXPORT_SYMBOL(vesa_modes);
443
444 const struct dmt_videomode dmt_modes[DMT_SIZE] = {
445 { 0x01, 0x0000, 0x000000, &vesa_modes[0] },
446 { 0x02, 0x3119, 0x000000, &vesa_modes[1] },
447 { 0x03, 0x0000, 0x000000, &vesa_modes[2] },
448 { 0x04, 0x3140, 0x000000, &vesa_modes[3] },
449 { 0x05, 0x314c, 0x000000, &vesa_modes[4] },
450 { 0x06, 0x314f, 0x000000, &vesa_modes[5] },
451 { 0x07, 0x3159, 0x000000, &vesa_modes[6] },
452 { 0x08, 0x0000, 0x000000, &vesa_modes[7] },
453 { 0x09, 0x4540, 0x000000, &vesa_modes[8] },
454 { 0x0a, 0x454c, 0x000000, &vesa_modes[9] },
455 { 0x0b, 0x454f, 0x000000, &vesa_modes[10] },
456 { 0x0c, 0x4559, 0x000000, &vesa_modes[11] },
457 { 0x0d, 0x0000, 0x000000, NULL },
458 { 0x0e, 0x0000, 0x000000, NULL },
459 { 0x0f, 0x0000, 0x000000, &vesa_modes[12] },
460 { 0x10, 0x6140, 0x000000, &vesa_modes[13] },
461 { 0x11, 0x614a, 0x000000, &vesa_modes[14] },
462 { 0x12, 0x614f, 0x000000, &vesa_modes[15] },
463 { 0x13, 0x6159, 0x000000, &vesa_modes[16] },
464 { 0x14, 0x0000, 0x000000, NULL },
465 { 0x15, 0x714f, 0x000000, &vesa_modes[17] },
466 { 0x16, 0x0000, 0x7f1c21, NULL },
467 { 0x17, 0x0000, 0x7f1c28, NULL },
468 { 0x18, 0x0000, 0x7f1c44, NULL },
469 { 0x19, 0x0000, 0x7f1c62, NULL },
470 { 0x1a, 0x0000, 0x000000, NULL },
471 { 0x1b, 0x0000, 0x8f1821, NULL },
472 { 0x1c, 0x8100, 0x8f1828, NULL },
473 { 0x1d, 0x810f, 0x8f1844, NULL },
474 { 0x1e, 0x8119, 0x8f1862, NULL },
475 { 0x1f, 0x0000, 0x000000, NULL },
476 { 0x20, 0x8140, 0x000000, &vesa_modes[18] },
477 { 0x21, 0x8159, 0x000000, &vesa_modes[19] },
478 { 0x22, 0x0000, 0x000000, NULL },
479 { 0x23, 0x8180, 0x000000, &vesa_modes[20] },
480 { 0x24, 0x818f, 0x000000, &vesa_modes[21] },
481 { 0x25, 0x8199, 0x000000, &vesa_modes[22] },
482 { 0x26, 0x0000, 0x000000, NULL },
483 { 0x27, 0x0000, 0x000000, NULL },
484 { 0x28, 0x0000, 0x000000, NULL },
485 { 0x29, 0x0000, 0x0c2021, NULL },
486 { 0x2a, 0x9040, 0x0c2028, NULL },
487 { 0x2b, 0x904f, 0x0c2044, NULL },
488 { 0x2c, 0x9059, 0x0c2062, NULL },
489 { 0x2d, 0x0000, 0x000000, NULL },
490 { 0x2e, 0x9500, 0xc11821, NULL },
491 { 0x2f, 0x9500, 0xc11828, NULL },
492 { 0x30, 0x950f, 0xc11844, NULL },
493 { 0x31, 0x9519, 0xc11868, NULL },
494 { 0x32, 0x0000, 0x000000, NULL },
495 { 0x33, 0xa940, 0x000000, &vesa_modes[23] },
496 { 0x34, 0xa945, 0x000000, &vesa_modes[24] },
497 { 0x35, 0xa94a, 0x000000, &vesa_modes[25] },
498 { 0x36, 0xa94f, 0x000000, &vesa_modes[26] },
499 { 0x37, 0xa959, 0x000000, &vesa_modes[27] },
500 { 0x38, 0x0000, 0x000000, NULL },
501 { 0x39, 0x0000, 0x0c2821, NULL },
502 { 0x3a, 0xb300, 0x0c2828, NULL },
503 { 0x3b, 0xb30f, 0x0c2844, NULL },
504 { 0x3c, 0xb319, 0x0c2868, NULL },
505 { 0x3d, 0x0000, 0x000000, NULL },
506 { 0x3e, 0xc140, 0x000000, &vesa_modes[28] },
507 { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] },
508 { 0x40, 0x0000, 0x000000, NULL},
509 { 0x41, 0xc940, 0x000000, &vesa_modes[30] },
510 { 0x42, 0xc94f, 0x000000, &vesa_modes[31] },
511 { 0x43, 0x0000, 0x000000, NULL },
512 { 0x44, 0x0000, 0x572821, &vesa_modes[34] },
513 { 0x45, 0xd100, 0x572828, &vesa_modes[35] },
514 { 0x46, 0xd10f, 0x572844, &vesa_modes[36] },
515 { 0x47, 0xd119, 0x572862, &vesa_modes[37] },
516 { 0x48, 0x0000, 0x000000, NULL },
517 { 0x49, 0xd140, 0x000000, &vesa_modes[32] },
518 { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] },
519 { 0x4b, 0x0000, 0x000000, NULL },
520 { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] },
521 { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] },
522 { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] },
523 { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] },
524 { 0x50, 0x0000, 0x000000, &vesa_modes[42] },
525 };
526 EXPORT_SYMBOL(dmt_modes);
527 #endif /* CONFIG_FB_MODE_HELPERS */
528
529 /**
530 * fb_try_mode - test a video mode
531 * @var: frame buffer user defined part of display
532 * @info: frame buffer info structure
533 * @mode: frame buffer video mode structure
534 * @bpp: color depth in bits per pixel
535 *
536 * Tries a video mode to test it's validity for device @info.
537 *
538 * Returns 1 on success.
539 *
540 */
541
542 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
543 const struct fb_videomode *mode, unsigned int bpp)
544 {
545 int err = 0;
546
547 DPRINTK("Trying mode %s %dx%d-%d@%d\n",
548 mode->name ? mode->name : "noname",
549 mode->xres, mode->yres, bpp, mode->refresh);
550 var->xres = mode->xres;
551 var->yres = mode->yres;
552 var->xres_virtual = mode->xres;
553 var->yres_virtual = mode->yres;
554 var->xoffset = 0;
555 var->yoffset = 0;
556 var->bits_per_pixel = bpp;
557 var->activate |= FB_ACTIVATE_TEST;
558 var->pixclock = mode->pixclock;
559 var->left_margin = mode->left_margin;
560 var->right_margin = mode->right_margin;
561 var->upper_margin = mode->upper_margin;
562 var->lower_margin = mode->lower_margin;
563 var->hsync_len = mode->hsync_len;
564 var->vsync_len = mode->vsync_len;
565 var->sync = mode->sync;
566 var->vmode = mode->vmode;
567 if (info->fbops->fb_check_var)
568 err = info->fbops->fb_check_var(var, info);
569 var->activate &= ~FB_ACTIVATE_TEST;
570 return err;
571 }
572
573 /**
574 * fb_find_mode - finds a valid video mode
575 * @var: frame buffer user defined part of display
576 * @info: frame buffer info structure
577 * @mode_option: string video mode to find
578 * @db: video mode database
579 * @dbsize: size of @db
580 * @default_mode: default video mode to fall back to
581 * @default_bpp: default color depth in bits per pixel
582 *
583 * Finds a suitable video mode, starting with the specified mode
584 * in @mode_option with fallback to @default_mode. If
585 * @default_mode fails, all modes in the video mode database will
586 * be tried.
587 *
588 * Valid mode specifiers for @mode_option::
589 *
590 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m]
591 *
592 * or ::
593 *
594 * <name>[-<bpp>][@<refresh>]
595 *
596 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
597 * <name> a string.
598 *
599 * If 'M' is present after yres (and before refresh/bpp if present),
600 * the function will compute the timings using VESA(tm) Coordinated
601 * Video Timings (CVT). If 'R' is present after 'M', will compute with
602 * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute
603 * interlaced or progressive mode. If 'm' is present, add margins equal
604 * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char
605 * 'i', 'p' and 'm' must be after 'M' and 'R'. Example::
606 *
607 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
608 *
609 * NOTE: The passed struct @var is _not_ cleared! This allows you
610 * to supply values for e.g. the grayscale and accel_flags fields.
611 *
612 * Returns zero for failure, 1 if using specified @mode_option,
613 * 2 if using specified @mode_option with an ignored refresh rate,
614 * 3 if default mode is used, 4 if fall back to any valid mode.
615 */
616
617 int fb_find_mode(struct fb_var_screeninfo *var,
618 struct fb_info *info, const char *mode_option,
619 const struct fb_videomode *db, unsigned int dbsize,
620 const struct fb_videomode *default_mode,
621 unsigned int default_bpp)
622 {
623 int i;
624
625 /* Set up defaults */
626 if (!db) {
627 db = modedb;
628 dbsize = ARRAY_SIZE(modedb);
629 }
630
631 if (!default_mode)
632 default_mode = &db[0];
633
634 if (!default_bpp)
635 default_bpp = 8;
636
637 /* Did the user specify a video mode? */
638 if (!mode_option)
639 mode_option = fb_mode_option;
640 if (mode_option) {
641 const char *name = mode_option;
642 unsigned int namelen = strlen(name);
643 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
644 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
645 int yres_specified = 0, cvt = 0, rb = 0;
646 int interlace_specified = 0, interlace = 0;
647 int margins = 0;
648 u32 best, diff, tdiff;
649
650 for (i = namelen-1; i >= 0; i--) {
651 switch (name[i]) {
652 case '@':
653 namelen = i;
654 if (!refresh_specified && !bpp_specified &&
655 !yres_specified) {
656 refresh = simple_strtol(&name[i+1], NULL,
657 10);
658 refresh_specified = 1;
659 if (cvt || rb)
660 cvt = 0;
661 } else
662 goto done;
663 break;
664 case '-':
665 namelen = i;
666 if (!bpp_specified && !yres_specified) {
667 bpp = simple_strtol(&name[i+1], NULL,
668 10);
669 bpp_specified = 1;
670 if (cvt || rb)
671 cvt = 0;
672 } else
673 goto done;
674 break;
675 case 'x':
676 if (!yres_specified) {
677 yres = simple_strtol(&name[i+1], NULL,
678 10);
679 yres_specified = 1;
680 } else
681 goto done;
682 break;
683 case '0' ... '9':
684 break;
685 case 'M':
686 if (!yres_specified)
687 cvt = 1;
688 break;
689 case 'R':
690 if (!cvt)
691 rb = 1;
692 break;
693 case 'm':
694 if (!cvt)
695 margins = 1;
696 break;
697 case 'p':
698 if (!cvt) {
699 interlace = 0;
700 interlace_specified = 1;
701 }
702 break;
703 case 'i':
704 if (!cvt) {
705 interlace = 1;
706 interlace_specified = 1;
707 }
708 break;
709 default:
710 goto done;
711 }
712 }
713 if (i < 0 && yres_specified) {
714 xres = simple_strtol(name, NULL, 10);
715 res_specified = 1;
716 }
717 done:
718 if (cvt) {
719 struct fb_videomode cvt_mode;
720 int ret;
721
722 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
723 (refresh) ? refresh : 60,
724 (rb) ? " reduced blanking" : "",
725 (margins) ? " with margins" : "",
726 (interlace) ? " interlaced" : "");
727
728 memset(&cvt_mode, 0, sizeof(cvt_mode));
729 cvt_mode.xres = xres;
730 cvt_mode.yres = yres;
731 cvt_mode.refresh = (refresh) ? refresh : 60;
732
733 if (interlace)
734 cvt_mode.vmode |= FB_VMODE_INTERLACED;
735 else
736 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
737
738 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
739
740 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
741 DPRINTK("modedb CVT: CVT mode ok\n");
742 return 1;
743 }
744
745 DPRINTK("CVT mode invalid, getting mode from database\n");
746 }
747
748 DPRINTK("Trying specified video mode%s %ix%i\n",
749 refresh_specified ? "" : " (ignoring refresh rate)",
750 xres, yres);
751
752 if (!refresh_specified) {
753 /*
754 * If the caller has provided a custom mode database and
755 * a valid monspecs structure, we look for the mode with
756 * the highest refresh rate. Otherwise we play it safe
757 * it and try to find a mode with a refresh rate closest
758 * to the standard 60 Hz.
759 */
760 if (db != modedb &&
761 info->monspecs.vfmin && info->monspecs.vfmax &&
762 info->monspecs.hfmin && info->monspecs.hfmax &&
763 info->monspecs.dclkmax) {
764 refresh = 1000;
765 } else {
766 refresh = 60;
767 }
768 }
769
770 diff = -1;
771 best = -1;
772 for (i = 0; i < dbsize; i++) {
773 if ((name_matches(db[i], name, namelen) ||
774 (res_specified && res_matches(db[i], xres, yres))) &&
775 !fb_try_mode(var, info, &db[i], bpp)) {
776 const int db_interlace = (db[i].vmode &
777 FB_VMODE_INTERLACED ? 1 : 0);
778 int score = abs(db[i].refresh - refresh);
779
780 if (interlace_specified)
781 score += abs(db_interlace - interlace);
782
783 if (!interlace_specified ||
784 db_interlace == interlace)
785 if (refresh_specified &&
786 db[i].refresh == refresh)
787 return 1;
788
789 if (score < diff) {
790 diff = score;
791 best = i;
792 }
793 }
794 }
795 if (best != -1) {
796 fb_try_mode(var, info, &db[best], bpp);
797 return (refresh_specified) ? 2 : 1;
798 }
799
800 diff = 2 * (xres + yres);
801 best = -1;
802 DPRINTK("Trying best-fit modes\n");
803 for (i = 0; i < dbsize; i++) {
804 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
805 if (!fb_try_mode(var, info, &db[i], bpp)) {
806 tdiff = abs(db[i].xres - xres) +
807 abs(db[i].yres - yres);
808
809 /*
810 * Penalize modes with resolutions smaller
811 * than requested.
812 */
813 if (xres > db[i].xres || yres > db[i].yres)
814 tdiff += xres + yres;
815
816 if (diff > tdiff) {
817 diff = tdiff;
818 best = i;
819 }
820 }
821 }
822 if (best != -1) {
823 fb_try_mode(var, info, &db[best], bpp);
824 return 5;
825 }
826 }
827
828 DPRINTK("Trying default video mode\n");
829 if (!fb_try_mode(var, info, default_mode, default_bpp))
830 return 3;
831
832 DPRINTK("Trying all modes\n");
833 for (i = 0; i < dbsize; i++)
834 if (!fb_try_mode(var, info, &db[i], default_bpp))
835 return 4;
836
837 DPRINTK("No valid mode found\n");
838 return 0;
839 }
840
841 /**
842 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
843 * @mode: pointer to struct fb_videomode
844 * @var: pointer to struct fb_var_screeninfo
845 */
846 void fb_var_to_videomode(struct fb_videomode *mode,
847 const struct fb_var_screeninfo *var)
848 {
849 u32 pixclock, hfreq, htotal, vtotal;
850
851 mode->name = NULL;
852 mode->xres = var->xres;
853 mode->yres = var->yres;
854 mode->pixclock = var->pixclock;
855 mode->hsync_len = var->hsync_len;
856 mode->vsync_len = var->vsync_len;
857 mode->left_margin = var->left_margin;
858 mode->right_margin = var->right_margin;
859 mode->upper_margin = var->upper_margin;
860 mode->lower_margin = var->lower_margin;
861 mode->sync = var->sync;
862 mode->vmode = var->vmode & FB_VMODE_MASK;
863 mode->flag = FB_MODE_IS_FROM_VAR;
864 mode->refresh = 0;
865
866 if (!var->pixclock)
867 return;
868
869 pixclock = PICOS2KHZ(var->pixclock) * 1000;
870
871 htotal = var->xres + var->right_margin + var->hsync_len +
872 var->left_margin;
873 vtotal = var->yres + var->lower_margin + var->vsync_len +
874 var->upper_margin;
875
876 if (var->vmode & FB_VMODE_INTERLACED)
877 vtotal /= 2;
878 if (var->vmode & FB_VMODE_DOUBLE)
879 vtotal *= 2;
880
881 if (!htotal || !vtotal)
882 return;
883
884 hfreq = pixclock/htotal;
885 mode->refresh = hfreq/vtotal;
886 }
887
888 /**
889 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
890 * @var: pointer to struct fb_var_screeninfo
891 * @mode: pointer to struct fb_videomode
892 */
893 void fb_videomode_to_var(struct fb_var_screeninfo *var,
894 const struct fb_videomode *mode)
895 {
896 var->xres = mode->xres;
897 var->yres = mode->yres;
898 var->xres_virtual = mode->xres;
899 var->yres_virtual = mode->yres;
900 var->xoffset = 0;
901 var->yoffset = 0;
902 var->pixclock = mode->pixclock;
903 var->left_margin = mode->left_margin;
904 var->right_margin = mode->right_margin;
905 var->upper_margin = mode->upper_margin;
906 var->lower_margin = mode->lower_margin;
907 var->hsync_len = mode->hsync_len;
908 var->vsync_len = mode->vsync_len;
909 var->sync = mode->sync;
910 var->vmode = mode->vmode & FB_VMODE_MASK;
911 }
912
913 /**
914 * fb_mode_is_equal - compare 2 videomodes
915 * @mode1: first videomode
916 * @mode2: second videomode
917 *
918 * RETURNS:
919 * 1 if equal, 0 if not
920 */
921 int fb_mode_is_equal(const struct fb_videomode *mode1,
922 const struct fb_videomode *mode2)
923 {
924 return (mode1->xres == mode2->xres &&
925 mode1->yres == mode2->yres &&
926 mode1->pixclock == mode2->pixclock &&
927 mode1->hsync_len == mode2->hsync_len &&
928 mode1->vsync_len == mode2->vsync_len &&
929 mode1->left_margin == mode2->left_margin &&
930 mode1->right_margin == mode2->right_margin &&
931 mode1->upper_margin == mode2->upper_margin &&
932 mode1->lower_margin == mode2->lower_margin &&
933 mode1->sync == mode2->sync &&
934 mode1->vmode == mode2->vmode);
935 }
936
937 /**
938 * fb_find_best_mode - find best matching videomode
939 * @var: pointer to struct fb_var_screeninfo
940 * @head: pointer to struct list_head of modelist
941 *
942 * RETURNS:
943 * struct fb_videomode, NULL if none found
944 *
945 * IMPORTANT:
946 * This function assumes that all modelist entries in
947 * info->modelist are valid.
948 *
949 * NOTES:
950 * Finds best matching videomode which has an equal or greater dimension than
951 * var->xres and var->yres. If more than 1 videomode is found, will return
952 * the videomode with the highest refresh rate
953 */
954 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
955 struct list_head *head)
956 {
957 struct list_head *pos;
958 struct fb_modelist *modelist;
959 struct fb_videomode *mode, *best = NULL;
960 u32 diff = -1;
961
962 list_for_each(pos, head) {
963 u32 d;
964
965 modelist = list_entry(pos, struct fb_modelist, list);
966 mode = &modelist->mode;
967
968 if (mode->xres >= var->xres && mode->yres >= var->yres) {
969 d = (mode->xres - var->xres) +
970 (mode->yres - var->yres);
971 if (diff > d) {
972 diff = d;
973 best = mode;
974 } else if (diff == d && best &&
975 mode->refresh > best->refresh)
976 best = mode;
977 }
978 }
979 return best;
980 }
981
982 /**
983 * fb_find_nearest_mode - find closest videomode
984 *
985 * @mode: pointer to struct fb_videomode
986 * @head: pointer to modelist
987 *
988 * Finds best matching videomode, smaller or greater in dimension.
989 * If more than 1 videomode is found, will return the videomode with
990 * the closest refresh rate.
991 */
992 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
993 struct list_head *head)
994 {
995 struct list_head *pos;
996 struct fb_modelist *modelist;
997 struct fb_videomode *cmode, *best = NULL;
998 u32 diff = -1, diff_refresh = -1;
999
1000 list_for_each(pos, head) {
1001 u32 d;
1002
1003 modelist = list_entry(pos, struct fb_modelist, list);
1004 cmode = &modelist->mode;
1005
1006 d = abs(cmode->xres - mode->xres) +
1007 abs(cmode->yres - mode->yres);
1008 if (diff > d) {
1009 diff = d;
1010 diff_refresh = abs(cmode->refresh - mode->refresh);
1011 best = cmode;
1012 } else if (diff == d) {
1013 d = abs(cmode->refresh - mode->refresh);
1014 if (diff_refresh > d) {
1015 diff_refresh = d;
1016 best = cmode;
1017 }
1018 }
1019 }
1020
1021 return best;
1022 }
1023
1024 /**
1025 * fb_match_mode - find a videomode which exactly matches the timings in var
1026 * @var: pointer to struct fb_var_screeninfo
1027 * @head: pointer to struct list_head of modelist
1028 *
1029 * RETURNS:
1030 * struct fb_videomode, NULL if none found
1031 */
1032 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1033 struct list_head *head)
1034 {
1035 struct list_head *pos;
1036 struct fb_modelist *modelist;
1037 struct fb_videomode *m, mode;
1038
1039 fb_var_to_videomode(&mode, var);
1040 list_for_each(pos, head) {
1041 modelist = list_entry(pos, struct fb_modelist, list);
1042 m = &modelist->mode;
1043 if (fb_mode_is_equal(m, &mode))
1044 return m;
1045 }
1046 return NULL;
1047 }
1048
1049 /**
1050 * fb_add_videomode - adds videomode entry to modelist
1051 * @mode: videomode to add
1052 * @head: struct list_head of modelist
1053 *
1054 * NOTES:
1055 * Will only add unmatched mode entries
1056 */
1057 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
1058 {
1059 struct list_head *pos;
1060 struct fb_modelist *modelist;
1061 struct fb_videomode *m;
1062 int found = 0;
1063
1064 list_for_each(pos, head) {
1065 modelist = list_entry(pos, struct fb_modelist, list);
1066 m = &modelist->mode;
1067 if (fb_mode_is_equal(m, mode)) {
1068 found = 1;
1069 break;
1070 }
1071 }
1072 if (!found) {
1073 modelist = kmalloc(sizeof(struct fb_modelist),
1074 GFP_KERNEL);
1075
1076 if (!modelist)
1077 return -ENOMEM;
1078 modelist->mode = *mode;
1079 list_add(&modelist->list, head);
1080 }
1081 return 0;
1082 }
1083
1084 /**
1085 * fb_delete_videomode - removed videomode entry from modelist
1086 * @mode: videomode to remove
1087 * @head: struct list_head of modelist
1088 *
1089 * NOTES:
1090 * Will remove all matching mode entries
1091 */
1092 void fb_delete_videomode(const struct fb_videomode *mode,
1093 struct list_head *head)
1094 {
1095 struct list_head *pos, *n;
1096 struct fb_modelist *modelist;
1097 struct fb_videomode *m;
1098
1099 list_for_each_safe(pos, n, head) {
1100 modelist = list_entry(pos, struct fb_modelist, list);
1101 m = &modelist->mode;
1102 if (fb_mode_is_equal(m, mode)) {
1103 list_del(pos);
1104 kfree(pos);
1105 }
1106 }
1107 }
1108
1109 /**
1110 * fb_destroy_modelist - destroy modelist
1111 * @head: struct list_head of modelist
1112 */
1113 void fb_destroy_modelist(struct list_head *head)
1114 {
1115 struct list_head *pos, *n;
1116
1117 list_for_each_safe(pos, n, head) {
1118 list_del(pos);
1119 kfree(pos);
1120 }
1121 }
1122 EXPORT_SYMBOL_GPL(fb_destroy_modelist);
1123
1124 /**
1125 * fb_videomode_to_modelist - convert mode array to mode list
1126 * @modedb: array of struct fb_videomode
1127 * @num: number of entries in array
1128 * @head: struct list_head of modelist
1129 */
1130 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1131 struct list_head *head)
1132 {
1133 int i;
1134
1135 INIT_LIST_HEAD(head);
1136
1137 for (i = 0; i < num; i++) {
1138 if (fb_add_videomode(&modedb[i], head))
1139 return;
1140 }
1141 }
1142
1143 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1144 struct list_head *head)
1145 {
1146 struct list_head *pos;
1147 struct fb_modelist *modelist;
1148 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
1149 int first = 0;
1150
1151 if (!head->prev || !head->next || list_empty(head))
1152 goto finished;
1153
1154 /* get the first detailed mode and the very first mode */
1155 list_for_each(pos, head) {
1156 modelist = list_entry(pos, struct fb_modelist, list);
1157 m = &modelist->mode;
1158
1159 if (!first) {
1160 m1 = m;
1161 first = 1;
1162 }
1163
1164 if (m->flag & FB_MODE_IS_FIRST) {
1165 md = m;
1166 break;
1167 }
1168 }
1169
1170 /* first detailed timing is preferred */
1171 if (specs->misc & FB_MISC_1ST_DETAIL) {
1172 best = md;
1173 goto finished;
1174 }
1175
1176 /* find best mode based on display width and height */
1177 if (specs->max_x && specs->max_y) {
1178 struct fb_var_screeninfo var;
1179
1180 memset(&var, 0, sizeof(struct fb_var_screeninfo));
1181 var.xres = (specs->max_x * 7200)/254;
1182 var.yres = (specs->max_y * 7200)/254;
1183 m = fb_find_best_mode(&var, head);
1184 if (m) {
1185 best = m;
1186 goto finished;
1187 }
1188 }
1189
1190 /* use first detailed mode */
1191 if (md) {
1192 best = md;
1193 goto finished;
1194 }
1195
1196 /* last resort, use the very first mode */
1197 best = m1;
1198 finished:
1199 return best;
1200 }
1201 EXPORT_SYMBOL(fb_find_best_display);
1202
1203 EXPORT_SYMBOL(fb_videomode_to_var);
1204 EXPORT_SYMBOL(fb_var_to_videomode);
1205 EXPORT_SYMBOL(fb_mode_is_equal);
1206 EXPORT_SYMBOL(fb_add_videomode);
1207 EXPORT_SYMBOL(fb_match_mode);
1208 EXPORT_SYMBOL(fb_find_best_mode);
1209 EXPORT_SYMBOL(fb_find_nearest_mode);
1210 EXPORT_SYMBOL(fb_videomode_to_modelist);
1211 EXPORT_SYMBOL(fb_find_mode);
1212 EXPORT_SYMBOL(fb_find_mode_cvt);
Linux with added FPC-III support