Line data Source code
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 : /* 1920x1080 @ 60 Hz, 67.3 kHz hsync */
261 : { NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5, 0,
262 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
263 : FB_VMODE_NONINTERLACED },
264 :
265 : /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
266 : { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
267 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
268 : FB_VMODE_NONINTERLACED },
269 :
270 : /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
271 : { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,
272 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
273 : FB_VMODE_NONINTERLACED },
274 :
275 : /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
276 : { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0,
277 : FB_VMODE_NONINTERLACED },
278 :
279 : /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
280 : { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0,
281 : FB_VMODE_NONINTERLACED },
282 :
283 : /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
284 : { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0,
285 : FB_VMODE_INTERLACED },
286 :
287 : /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
288 : { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0,
289 : FB_VMODE_INTERLACED },
290 :
291 : /* 864x480 @ 60 Hz, 35.15 kHz hsync */
292 : { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0,
293 : 0, FB_VMODE_NONINTERLACED },
294 : };
295 :
296 : #ifdef CONFIG_FB_MODE_HELPERS
297 : const struct fb_videomode vesa_modes[] = {
298 : /* 0 640x350-85 VESA */
299 : { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
300 : FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
301 : /* 1 640x400-85 VESA */
302 : { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
303 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
304 : /* 2 720x400-85 VESA */
305 : { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
306 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
307 : /* 3 640x480-60 VESA */
308 : { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
309 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
310 : /* 4 640x480-72 VESA */
311 : { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
312 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
313 : /* 5 640x480-75 VESA */
314 : { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
315 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
316 : /* 6 640x480-85 VESA */
317 : { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
318 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
319 : /* 7 800x600-56 VESA */
320 : { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
321 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
322 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
323 : /* 8 800x600-60 VESA */
324 : { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
325 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
326 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
327 : /* 9 800x600-72 VESA */
328 : { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
329 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
330 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
331 : /* 10 800x600-75 VESA */
332 : { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
333 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
334 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
335 : /* 11 800x600-85 VESA */
336 : { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
337 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
338 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
339 : /* 12 1024x768i-43 VESA */
340 : { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
341 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
342 : FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
343 : /* 13 1024x768-60 VESA */
344 : { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
345 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
346 : /* 14 1024x768-70 VESA */
347 : { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
348 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
349 : /* 15 1024x768-75 VESA */
350 : { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
351 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
352 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
353 : /* 16 1024x768-85 VESA */
354 : { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
355 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
356 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
357 : /* 17 1152x864-75 VESA */
358 : { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
359 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
360 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
361 : /* 18 1280x960-60 VESA */
362 : { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
363 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
364 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
365 : /* 19 1280x960-85 VESA */
366 : { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
367 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
368 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
369 : /* 20 1280x1024-60 VESA */
370 : { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
371 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
372 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
373 : /* 21 1280x1024-75 VESA */
374 : { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
375 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
376 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
377 : /* 22 1280x1024-85 VESA */
378 : { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
379 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
380 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
381 : /* 23 1600x1200-60 VESA */
382 : { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
383 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
384 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
385 : /* 24 1600x1200-65 VESA */
386 : { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
387 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
388 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
389 : /* 25 1600x1200-70 VESA */
390 : { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
391 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
392 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
393 : /* 26 1600x1200-75 VESA */
394 : { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
395 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
396 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
397 : /* 27 1600x1200-85 VESA */
398 : { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
399 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
400 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
401 : /* 28 1792x1344-60 VESA */
402 : { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
403 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
404 : /* 29 1792x1344-75 VESA */
405 : { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
406 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
407 : /* 30 1856x1392-60 VESA */
408 : { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
409 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
410 : /* 31 1856x1392-75 VESA */
411 : { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
412 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
413 : /* 32 1920x1440-60 VESA */
414 : { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
415 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
416 : /* 33 1920x1440-75 VESA */
417 : { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
418 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
419 : /* 34 1920x1200-60 RB VESA */
420 : { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6,
421 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
422 : /* 35 1920x1200-60 VESA */
423 : { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6,
424 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
425 : /* 36 1920x1200-75 VESA */
426 : { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6,
427 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
428 : /* 37 1920x1200-85 VESA */
429 : { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6,
430 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
431 : /* 38 2560x1600-60 RB VESA */
432 : { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6,
433 : FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
434 : /* 39 2560x1600-60 VESA */
435 : { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6,
436 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
437 : /* 40 2560x1600-75 VESA */
438 : { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6,
439 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
440 : /* 41 2560x1600-85 VESA */
441 : { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6,
442 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
443 : /* 42 2560x1600-120 RB VESA */
444 : { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6,
445 : FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
446 : };
447 : EXPORT_SYMBOL(vesa_modes);
448 :
449 : const struct dmt_videomode dmt_modes[DMT_SIZE] = {
450 : { 0x01, 0x0000, 0x000000, &vesa_modes[0] },
451 : { 0x02, 0x3119, 0x000000, &vesa_modes[1] },
452 : { 0x03, 0x0000, 0x000000, &vesa_modes[2] },
453 : { 0x04, 0x3140, 0x000000, &vesa_modes[3] },
454 : { 0x05, 0x314c, 0x000000, &vesa_modes[4] },
455 : { 0x06, 0x314f, 0x000000, &vesa_modes[5] },
456 : { 0x07, 0x3159, 0x000000, &vesa_modes[6] },
457 : { 0x08, 0x0000, 0x000000, &vesa_modes[7] },
458 : { 0x09, 0x4540, 0x000000, &vesa_modes[8] },
459 : { 0x0a, 0x454c, 0x000000, &vesa_modes[9] },
460 : { 0x0b, 0x454f, 0x000000, &vesa_modes[10] },
461 : { 0x0c, 0x4559, 0x000000, &vesa_modes[11] },
462 : { 0x0d, 0x0000, 0x000000, NULL },
463 : { 0x0e, 0x0000, 0x000000, NULL },
464 : { 0x0f, 0x0000, 0x000000, &vesa_modes[12] },
465 : { 0x10, 0x6140, 0x000000, &vesa_modes[13] },
466 : { 0x11, 0x614a, 0x000000, &vesa_modes[14] },
467 : { 0x12, 0x614f, 0x000000, &vesa_modes[15] },
468 : { 0x13, 0x6159, 0x000000, &vesa_modes[16] },
469 : { 0x14, 0x0000, 0x000000, NULL },
470 : { 0x15, 0x714f, 0x000000, &vesa_modes[17] },
471 : { 0x16, 0x0000, 0x7f1c21, NULL },
472 : { 0x17, 0x0000, 0x7f1c28, NULL },
473 : { 0x18, 0x0000, 0x7f1c44, NULL },
474 : { 0x19, 0x0000, 0x7f1c62, NULL },
475 : { 0x1a, 0x0000, 0x000000, NULL },
476 : { 0x1b, 0x0000, 0x8f1821, NULL },
477 : { 0x1c, 0x8100, 0x8f1828, NULL },
478 : { 0x1d, 0x810f, 0x8f1844, NULL },
479 : { 0x1e, 0x8119, 0x8f1862, NULL },
480 : { 0x1f, 0x0000, 0x000000, NULL },
481 : { 0x20, 0x8140, 0x000000, &vesa_modes[18] },
482 : { 0x21, 0x8159, 0x000000, &vesa_modes[19] },
483 : { 0x22, 0x0000, 0x000000, NULL },
484 : { 0x23, 0x8180, 0x000000, &vesa_modes[20] },
485 : { 0x24, 0x818f, 0x000000, &vesa_modes[21] },
486 : { 0x25, 0x8199, 0x000000, &vesa_modes[22] },
487 : { 0x26, 0x0000, 0x000000, NULL },
488 : { 0x27, 0x0000, 0x000000, NULL },
489 : { 0x28, 0x0000, 0x000000, NULL },
490 : { 0x29, 0x0000, 0x0c2021, NULL },
491 : { 0x2a, 0x9040, 0x0c2028, NULL },
492 : { 0x2b, 0x904f, 0x0c2044, NULL },
493 : { 0x2c, 0x9059, 0x0c2062, NULL },
494 : { 0x2d, 0x0000, 0x000000, NULL },
495 : { 0x2e, 0x9500, 0xc11821, NULL },
496 : { 0x2f, 0x9500, 0xc11828, NULL },
497 : { 0x30, 0x950f, 0xc11844, NULL },
498 : { 0x31, 0x9519, 0xc11868, NULL },
499 : { 0x32, 0x0000, 0x000000, NULL },
500 : { 0x33, 0xa940, 0x000000, &vesa_modes[23] },
501 : { 0x34, 0xa945, 0x000000, &vesa_modes[24] },
502 : { 0x35, 0xa94a, 0x000000, &vesa_modes[25] },
503 : { 0x36, 0xa94f, 0x000000, &vesa_modes[26] },
504 : { 0x37, 0xa959, 0x000000, &vesa_modes[27] },
505 : { 0x38, 0x0000, 0x000000, NULL },
506 : { 0x39, 0x0000, 0x0c2821, NULL },
507 : { 0x3a, 0xb300, 0x0c2828, NULL },
508 : { 0x3b, 0xb30f, 0x0c2844, NULL },
509 : { 0x3c, 0xb319, 0x0c2868, NULL },
510 : { 0x3d, 0x0000, 0x000000, NULL },
511 : { 0x3e, 0xc140, 0x000000, &vesa_modes[28] },
512 : { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] },
513 : { 0x40, 0x0000, 0x000000, NULL},
514 : { 0x41, 0xc940, 0x000000, &vesa_modes[30] },
515 : { 0x42, 0xc94f, 0x000000, &vesa_modes[31] },
516 : { 0x43, 0x0000, 0x000000, NULL },
517 : { 0x44, 0x0000, 0x572821, &vesa_modes[34] },
518 : { 0x45, 0xd100, 0x572828, &vesa_modes[35] },
519 : { 0x46, 0xd10f, 0x572844, &vesa_modes[36] },
520 : { 0x47, 0xd119, 0x572862, &vesa_modes[37] },
521 : { 0x48, 0x0000, 0x000000, NULL },
522 : { 0x49, 0xd140, 0x000000, &vesa_modes[32] },
523 : { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] },
524 : { 0x4b, 0x0000, 0x000000, NULL },
525 : { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] },
526 : { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] },
527 : { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] },
528 : { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] },
529 : { 0x50, 0x0000, 0x000000, &vesa_modes[42] },
530 : };
531 : EXPORT_SYMBOL(dmt_modes);
532 : #endif /* CONFIG_FB_MODE_HELPERS */
533 :
534 : /**
535 : * fb_try_mode - test a video mode
536 : * @var: frame buffer user defined part of display
537 : * @info: frame buffer info structure
538 : * @mode: frame buffer video mode structure
539 : * @bpp: color depth in bits per pixel
540 : *
541 : * Tries a video mode to test it's validity for device @info.
542 : *
543 : * Returns 1 on success.
544 : *
545 : */
546 :
547 0 : static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
548 : const struct fb_videomode *mode, unsigned int bpp)
549 : {
550 0 : int err = 0;
551 :
552 : DPRINTK("Trying mode %s %dx%d-%d@%d\n",
553 : mode->name ? mode->name : "noname",
554 : mode->xres, mode->yres, bpp, mode->refresh);
555 0 : var->xres = mode->xres;
556 0 : var->yres = mode->yres;
557 0 : var->xres_virtual = mode->xres;
558 0 : var->yres_virtual = mode->yres;
559 0 : var->xoffset = 0;
560 0 : var->yoffset = 0;
561 0 : var->bits_per_pixel = bpp;
562 0 : var->activate |= FB_ACTIVATE_TEST;
563 0 : var->pixclock = mode->pixclock;
564 0 : var->left_margin = mode->left_margin;
565 0 : var->right_margin = mode->right_margin;
566 0 : var->upper_margin = mode->upper_margin;
567 0 : var->lower_margin = mode->lower_margin;
568 0 : var->hsync_len = mode->hsync_len;
569 0 : var->vsync_len = mode->vsync_len;
570 0 : var->sync = mode->sync;
571 0 : var->vmode = mode->vmode;
572 0 : if (info->fbops->fb_check_var)
573 0 : err = info->fbops->fb_check_var(var, info);
574 0 : var->activate &= ~FB_ACTIVATE_TEST;
575 0 : return err;
576 : }
577 :
578 : /**
579 : * fb_find_mode - finds a valid video mode
580 : * @var: frame buffer user defined part of display
581 : * @info: frame buffer info structure
582 : * @mode_option: string video mode to find
583 : * @db: video mode database
584 : * @dbsize: size of @db
585 : * @default_mode: default video mode to fall back to
586 : * @default_bpp: default color depth in bits per pixel
587 : *
588 : * Finds a suitable video mode, starting with the specified mode
589 : * in @mode_option with fallback to @default_mode. If
590 : * @default_mode fails, all modes in the video mode database will
591 : * be tried.
592 : *
593 : * Valid mode specifiers for @mode_option::
594 : *
595 : * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m]
596 : *
597 : * or ::
598 : *
599 : * <name>[-<bpp>][@<refresh>]
600 : *
601 : * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
602 : * <name> a string.
603 : *
604 : * If 'M' is present after yres (and before refresh/bpp if present),
605 : * the function will compute the timings using VESA(tm) Coordinated
606 : * Video Timings (CVT). If 'R' is present after 'M', will compute with
607 : * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute
608 : * interlaced or progressive mode. If 'm' is present, add margins equal
609 : * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char
610 : * 'i', 'p' and 'm' must be after 'M' and 'R'. Example::
611 : *
612 : * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
613 : *
614 : * NOTE: The passed struct @var is _not_ cleared! This allows you
615 : * to supply values for e.g. the grayscale and accel_flags fields.
616 : *
617 : * Returns zero for failure, 1 if using specified @mode_option,
618 : * 2 if using specified @mode_option with an ignored refresh rate,
619 : * 3 if default mode is used, 4 if fall back to any valid mode.
620 : */
621 :
622 0 : int fb_find_mode(struct fb_var_screeninfo *var,
623 : struct fb_info *info, const char *mode_option,
624 : const struct fb_videomode *db, unsigned int dbsize,
625 : const struct fb_videomode *default_mode,
626 : unsigned int default_bpp)
627 : {
628 0 : char *mode_option_buf = NULL;
629 : int i;
630 :
631 : /* Set up defaults */
632 0 : if (!db) {
633 0 : db = modedb;
634 0 : dbsize = ARRAY_SIZE(modedb);
635 : }
636 :
637 0 : if (!default_mode)
638 0 : default_mode = &db[0];
639 :
640 0 : if (!default_bpp)
641 0 : default_bpp = 8;
642 :
643 : /* Did the user specify a video mode? */
644 0 : if (!mode_option) {
645 0 : fb_get_options(NULL, &mode_option_buf);
646 0 : mode_option = mode_option_buf;
647 : }
648 0 : if (mode_option) {
649 0 : const char *name = mode_option;
650 0 : unsigned int namelen = strlen(name);
651 0 : int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
652 0 : unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
653 0 : int yres_specified = 0, cvt = 0, rb = 0;
654 0 : int interlace_specified = 0, interlace = 0;
655 0 : int margins = 0;
656 : u32 best, diff, tdiff;
657 :
658 0 : for (i = namelen-1; i >= 0; i--) {
659 0 : switch (name[i]) {
660 : case '@':
661 0 : namelen = i;
662 0 : if (!refresh_specified && !bpp_specified &&
663 : !yres_specified) {
664 0 : refresh = simple_strtol(&name[i+1], NULL,
665 : 10);
666 0 : refresh_specified = 1;
667 0 : if (cvt || rb)
668 0 : cvt = 0;
669 : } else
670 : goto done;
671 : break;
672 : case '-':
673 0 : namelen = i;
674 0 : if (!bpp_specified && !yres_specified) {
675 0 : bpp = simple_strtol(&name[i+1], NULL,
676 : 10);
677 0 : bpp_specified = 1;
678 0 : if (cvt || rb)
679 0 : cvt = 0;
680 : } else
681 : goto done;
682 : break;
683 : case 'x':
684 0 : if (!yres_specified) {
685 0 : yres = simple_strtol(&name[i+1], NULL,
686 : 10);
687 0 : yres_specified = 1;
688 : } else
689 : goto done;
690 0 : break;
691 : case '0' ... '9':
692 : break;
693 : case 'M':
694 0 : if (!yres_specified)
695 0 : cvt = 1;
696 : break;
697 : case 'R':
698 0 : if (!cvt)
699 0 : rb = 1;
700 : break;
701 : case 'm':
702 0 : if (!cvt)
703 0 : margins = 1;
704 : break;
705 : case 'p':
706 0 : if (!cvt) {
707 0 : interlace = 0;
708 0 : interlace_specified = 1;
709 : }
710 : break;
711 : case 'i':
712 0 : if (!cvt) {
713 0 : interlace = 1;
714 0 : interlace_specified = 1;
715 : }
716 : break;
717 : default:
718 : goto done;
719 : }
720 : }
721 0 : if (i < 0 && yres_specified) {
722 0 : xres = simple_strtol(name, NULL, 10);
723 0 : res_specified = 1;
724 : }
725 : done:
726 0 : kfree(mode_option_buf);
727 0 : if (cvt) {
728 : struct fb_videomode cvt_mode;
729 : int ret;
730 :
731 : DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
732 : (refresh) ? refresh : 60,
733 : (rb) ? " reduced blanking" : "",
734 : (margins) ? " with margins" : "",
735 : (interlace) ? " interlaced" : "");
736 :
737 0 : memset(&cvt_mode, 0, sizeof(cvt_mode));
738 0 : cvt_mode.xres = xres;
739 0 : cvt_mode.yres = yres;
740 0 : cvt_mode.refresh = (refresh) ? refresh : 60;
741 :
742 0 : if (interlace)
743 0 : cvt_mode.vmode |= FB_VMODE_INTERLACED;
744 : else
745 : cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
746 :
747 0 : ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
748 :
749 0 : if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
750 : DPRINTK("modedb CVT: CVT mode ok\n");
751 0 : return 1;
752 : }
753 :
754 : DPRINTK("CVT mode invalid, getting mode from database\n");
755 : }
756 :
757 : DPRINTK("Trying specified video mode%s %ix%i\n",
758 : refresh_specified ? "" : " (ignoring refresh rate)",
759 : xres, yres);
760 :
761 0 : if (!refresh_specified) {
762 : /*
763 : * If the caller has provided a custom mode database and
764 : * a valid monspecs structure, we look for the mode with
765 : * the highest refresh rate. Otherwise we play it safe
766 : * it and try to find a mode with a refresh rate closest
767 : * to the standard 60 Hz.
768 : */
769 0 : if (db != modedb &&
770 0 : info->monspecs.vfmin && info->monspecs.vfmax &&
771 0 : info->monspecs.hfmin && info->monspecs.hfmax &&
772 0 : info->monspecs.dclkmax) {
773 : refresh = 1000;
774 : } else {
775 0 : refresh = 60;
776 : }
777 : }
778 :
779 0 : diff = -1;
780 0 : best = -1;
781 0 : for (i = 0; i < dbsize; i++) {
782 0 : if ((name_matches(db[i], name, namelen) ||
783 0 : (res_specified && res_matches(db[i], xres, yres))) &&
784 0 : !fb_try_mode(var, info, &db[i], bpp)) {
785 0 : const int db_interlace = (db[i].vmode &
786 0 : FB_VMODE_INTERLACED ? 1 : 0);
787 0 : int score = abs(db[i].refresh - refresh);
788 :
789 0 : if (interlace_specified)
790 0 : score += abs(db_interlace - interlace);
791 :
792 0 : if (!interlace_specified ||
793 0 : db_interlace == interlace)
794 0 : if (refresh_specified &&
795 : db[i].refresh == refresh)
796 : return 1;
797 :
798 0 : if (score < diff) {
799 0 : diff = score;
800 0 : best = i;
801 : }
802 : }
803 : }
804 0 : if (best != -1) {
805 0 : fb_try_mode(var, info, &db[best], bpp);
806 0 : return (refresh_specified) ? 2 : 1;
807 : }
808 :
809 0 : diff = 2 * (xres + yres);
810 0 : best = -1;
811 : DPRINTK("Trying best-fit modes\n");
812 0 : for (i = 0; i < dbsize; i++) {
813 : DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
814 0 : if (!fb_try_mode(var, info, &db[i], bpp)) {
815 0 : tdiff = abs(db[i].xres - xres) +
816 0 : abs(db[i].yres - yres);
817 :
818 : /*
819 : * Penalize modes with resolutions smaller
820 : * than requested.
821 : */
822 0 : if (xres > db[i].xres || yres > db[i].yres)
823 0 : tdiff += xres + yres;
824 :
825 0 : if (diff > tdiff) {
826 0 : diff = tdiff;
827 0 : best = i;
828 : }
829 : }
830 : }
831 0 : if (best != -1) {
832 0 : fb_try_mode(var, info, &db[best], bpp);
833 0 : return 5;
834 : }
835 : }
836 :
837 : DPRINTK("Trying default video mode\n");
838 0 : if (!fb_try_mode(var, info, default_mode, default_bpp))
839 : return 3;
840 :
841 : DPRINTK("Trying all modes\n");
842 0 : for (i = 0; i < dbsize; i++)
843 0 : if (!fb_try_mode(var, info, &db[i], default_bpp))
844 : return 4;
845 :
846 : DPRINTK("No valid mode found\n");
847 : return 0;
848 : }
849 :
850 : /**
851 : * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
852 : * @mode: pointer to struct fb_videomode
853 : * @var: pointer to struct fb_var_screeninfo
854 : */
855 0 : void fb_var_to_videomode(struct fb_videomode *mode,
856 : const struct fb_var_screeninfo *var)
857 : {
858 : u32 pixclock, hfreq, htotal, vtotal;
859 :
860 0 : mode->name = NULL;
861 0 : mode->xres = var->xres;
862 0 : mode->yres = var->yres;
863 0 : mode->pixclock = var->pixclock;
864 0 : mode->hsync_len = var->hsync_len;
865 0 : mode->vsync_len = var->vsync_len;
866 0 : mode->left_margin = var->left_margin;
867 0 : mode->right_margin = var->right_margin;
868 0 : mode->upper_margin = var->upper_margin;
869 0 : mode->lower_margin = var->lower_margin;
870 0 : mode->sync = var->sync;
871 0 : mode->vmode = var->vmode & FB_VMODE_MASK;
872 0 : mode->flag = FB_MODE_IS_FROM_VAR;
873 0 : mode->refresh = 0;
874 :
875 0 : if (!var->pixclock)
876 : return;
877 :
878 0 : pixclock = PICOS2KHZ(var->pixclock) * 1000;
879 :
880 0 : htotal = var->xres + var->right_margin + var->hsync_len +
881 0 : var->left_margin;
882 0 : vtotal = var->yres + var->lower_margin + var->vsync_len +
883 0 : var->upper_margin;
884 :
885 0 : if (var->vmode & FB_VMODE_INTERLACED)
886 0 : vtotal /= 2;
887 0 : if (var->vmode & FB_VMODE_DOUBLE)
888 0 : vtotal *= 2;
889 :
890 0 : if (!htotal || !vtotal)
891 : return;
892 :
893 0 : hfreq = pixclock/htotal;
894 0 : mode->refresh = hfreq/vtotal;
895 : }
896 :
897 : /**
898 : * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
899 : * @var: pointer to struct fb_var_screeninfo
900 : * @mode: pointer to struct fb_videomode
901 : */
902 0 : void fb_videomode_to_var(struct fb_var_screeninfo *var,
903 : const struct fb_videomode *mode)
904 : {
905 0 : var->xres = mode->xres;
906 0 : var->yres = mode->yres;
907 0 : var->xres_virtual = mode->xres;
908 0 : var->yres_virtual = mode->yres;
909 0 : var->xoffset = 0;
910 0 : var->yoffset = 0;
911 0 : var->pixclock = mode->pixclock;
912 0 : var->left_margin = mode->left_margin;
913 0 : var->right_margin = mode->right_margin;
914 0 : var->upper_margin = mode->upper_margin;
915 0 : var->lower_margin = mode->lower_margin;
916 0 : var->hsync_len = mode->hsync_len;
917 0 : var->vsync_len = mode->vsync_len;
918 0 : var->sync = mode->sync;
919 0 : var->vmode = mode->vmode & FB_VMODE_MASK;
920 0 : }
921 :
922 : /**
923 : * fb_mode_is_equal - compare 2 videomodes
924 : * @mode1: first videomode
925 : * @mode2: second videomode
926 : *
927 : * RETURNS:
928 : * 1 if equal, 0 if not
929 : */
930 0 : int fb_mode_is_equal(const struct fb_videomode *mode1,
931 : const struct fb_videomode *mode2)
932 : {
933 0 : return (mode1->xres == mode2->xres &&
934 0 : mode1->yres == mode2->yres &&
935 : mode1->pixclock == mode2->pixclock &&
936 0 : mode1->hsync_len == mode2->hsync_len &&
937 : mode1->vsync_len == mode2->vsync_len &&
938 0 : mode1->left_margin == mode2->left_margin &&
939 : mode1->right_margin == mode2->right_margin &&
940 0 : mode1->upper_margin == mode2->upper_margin &&
941 : mode1->lower_margin == mode2->lower_margin &&
942 0 : mode1->sync == mode2->sync &&
943 : mode1->vmode == mode2->vmode);
944 : }
945 :
946 : /**
947 : * fb_find_best_mode - find best matching videomode
948 : * @var: pointer to struct fb_var_screeninfo
949 : * @head: pointer to struct list_head of modelist
950 : *
951 : * RETURNS:
952 : * struct fb_videomode, NULL if none found
953 : *
954 : * IMPORTANT:
955 : * This function assumes that all modelist entries in
956 : * info->modelist are valid.
957 : *
958 : * NOTES:
959 : * Finds best matching videomode which has an equal or greater dimension than
960 : * var->xres and var->yres. If more than 1 videomode is found, will return
961 : * the videomode with the highest refresh rate
962 : */
963 0 : const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
964 : struct list_head *head)
965 : {
966 : struct list_head *pos;
967 : struct fb_modelist *modelist;
968 0 : struct fb_videomode *mode, *best = NULL;
969 0 : u32 diff = -1;
970 :
971 0 : list_for_each(pos, head) {
972 : u32 d;
973 :
974 0 : modelist = list_entry(pos, struct fb_modelist, list);
975 0 : mode = &modelist->mode;
976 :
977 0 : if (mode->xres >= var->xres && mode->yres >= var->yres) {
978 0 : d = (mode->xres - var->xres) +
979 0 : (mode->yres - var->yres);
980 0 : if (diff > d) {
981 : diff = d;
982 : best = mode;
983 0 : } else if (diff == d && best &&
984 0 : mode->refresh > best->refresh)
985 0 : best = mode;
986 : }
987 : }
988 0 : return best;
989 : }
990 :
991 : /**
992 : * fb_find_nearest_mode - find closest videomode
993 : *
994 : * @mode: pointer to struct fb_videomode
995 : * @head: pointer to modelist
996 : *
997 : * Finds best matching videomode, smaller or greater in dimension.
998 : * If more than 1 videomode is found, will return the videomode with
999 : * the closest refresh rate.
1000 : */
1001 0 : const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1002 : struct list_head *head)
1003 : {
1004 : struct list_head *pos;
1005 : struct fb_modelist *modelist;
1006 0 : struct fb_videomode *cmode, *best = NULL;
1007 0 : u32 diff = -1, diff_refresh = -1;
1008 :
1009 0 : list_for_each(pos, head) {
1010 : u32 d;
1011 :
1012 0 : modelist = list_entry(pos, struct fb_modelist, list);
1013 0 : cmode = &modelist->mode;
1014 :
1015 0 : d = abs(cmode->xres - mode->xres) +
1016 0 : abs(cmode->yres - mode->yres);
1017 0 : if (diff > d) {
1018 0 : diff = d;
1019 0 : diff_refresh = abs(cmode->refresh - mode->refresh);
1020 0 : best = cmode;
1021 0 : } else if (diff == d) {
1022 0 : d = abs(cmode->refresh - mode->refresh);
1023 0 : if (diff_refresh > d) {
1024 0 : diff_refresh = d;
1025 0 : best = cmode;
1026 : }
1027 : }
1028 : }
1029 :
1030 0 : return best;
1031 : }
1032 :
1033 : /**
1034 : * fb_match_mode - find a videomode which exactly matches the timings in var
1035 : * @var: pointer to struct fb_var_screeninfo
1036 : * @head: pointer to struct list_head of modelist
1037 : *
1038 : * RETURNS:
1039 : * struct fb_videomode, NULL if none found
1040 : */
1041 0 : const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1042 : struct list_head *head)
1043 : {
1044 : struct list_head *pos;
1045 : struct fb_modelist *modelist;
1046 : struct fb_videomode *m, mode;
1047 :
1048 0 : fb_var_to_videomode(&mode, var);
1049 0 : list_for_each(pos, head) {
1050 0 : modelist = list_entry(pos, struct fb_modelist, list);
1051 0 : m = &modelist->mode;
1052 0 : if (fb_mode_is_equal(m, &mode))
1053 : return m;
1054 : }
1055 : return NULL;
1056 : }
1057 :
1058 : /**
1059 : * fb_add_videomode - adds videomode entry to modelist
1060 : * @mode: videomode to add
1061 : * @head: struct list_head of modelist
1062 : *
1063 : * NOTES:
1064 : * Will only add unmatched mode entries
1065 : */
1066 0 : int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
1067 : {
1068 : struct list_head *pos;
1069 : struct fb_modelist *modelist;
1070 : struct fb_videomode *m;
1071 0 : int found = 0;
1072 :
1073 0 : list_for_each(pos, head) {
1074 0 : modelist = list_entry(pos, struct fb_modelist, list);
1075 0 : m = &modelist->mode;
1076 0 : if (fb_mode_is_equal(m, mode)) {
1077 : found = 1;
1078 : break;
1079 : }
1080 : }
1081 0 : if (!found) {
1082 0 : modelist = kmalloc(sizeof(struct fb_modelist),
1083 : GFP_KERNEL);
1084 :
1085 0 : if (!modelist)
1086 : return -ENOMEM;
1087 0 : modelist->mode = *mode;
1088 0 : list_add(&modelist->list, head);
1089 : }
1090 : return 0;
1091 : }
1092 :
1093 : /**
1094 : * fb_delete_videomode - removed videomode entry from modelist
1095 : * @mode: videomode to remove
1096 : * @head: struct list_head of modelist
1097 : *
1098 : * NOTES:
1099 : * Will remove all matching mode entries
1100 : */
1101 0 : void fb_delete_videomode(const struct fb_videomode *mode,
1102 : struct list_head *head)
1103 : {
1104 : struct list_head *pos, *n;
1105 : struct fb_modelist *modelist;
1106 : struct fb_videomode *m;
1107 :
1108 0 : list_for_each_safe(pos, n, head) {
1109 0 : modelist = list_entry(pos, struct fb_modelist, list);
1110 0 : m = &modelist->mode;
1111 0 : if (fb_mode_is_equal(m, mode)) {
1112 0 : list_del(pos);
1113 0 : kfree(pos);
1114 : }
1115 : }
1116 0 : }
1117 :
1118 : /**
1119 : * fb_destroy_modelist - destroy modelist
1120 : * @head: struct list_head of modelist
1121 : */
1122 0 : void fb_destroy_modelist(struct list_head *head)
1123 : {
1124 : struct list_head *pos, *n;
1125 :
1126 0 : list_for_each_safe(pos, n, head) {
1127 0 : list_del(pos);
1128 0 : kfree(pos);
1129 : }
1130 0 : }
1131 : EXPORT_SYMBOL_GPL(fb_destroy_modelist);
1132 :
1133 : /**
1134 : * fb_videomode_to_modelist - convert mode array to mode list
1135 : * @modedb: array of struct fb_videomode
1136 : * @num: number of entries in array
1137 : * @head: struct list_head of modelist
1138 : */
1139 0 : void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1140 : struct list_head *head)
1141 : {
1142 : int i;
1143 :
1144 0 : INIT_LIST_HEAD(head);
1145 :
1146 0 : for (i = 0; i < num; i++) {
1147 0 : if (fb_add_videomode(&modedb[i], head))
1148 : return;
1149 : }
1150 : }
1151 :
1152 0 : const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1153 : struct list_head *head)
1154 : {
1155 : struct list_head *pos;
1156 : struct fb_modelist *modelist;
1157 0 : const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
1158 0 : int first = 0;
1159 :
1160 0 : if (!head->prev || !head->next || list_empty(head))
1161 : goto finished;
1162 :
1163 : /* get the first detailed mode and the very first mode */
1164 0 : list_for_each(pos, head) {
1165 0 : modelist = list_entry(pos, struct fb_modelist, list);
1166 0 : m = &modelist->mode;
1167 :
1168 0 : if (!first) {
1169 0 : m1 = m;
1170 0 : first = 1;
1171 : }
1172 :
1173 0 : if (m->flag & FB_MODE_IS_FIRST) {
1174 : md = m;
1175 : break;
1176 : }
1177 : }
1178 :
1179 : /* first detailed timing is preferred */
1180 0 : if (specs->misc & FB_MISC_1ST_DETAIL) {
1181 : best = md;
1182 : goto finished;
1183 : }
1184 :
1185 : /* find best mode based on display width and height */
1186 0 : if (specs->max_x && specs->max_y) {
1187 : struct fb_var_screeninfo var;
1188 :
1189 0 : memset(&var, 0, sizeof(struct fb_var_screeninfo));
1190 0 : var.xres = (specs->max_x * 7200)/254;
1191 0 : var.yres = (specs->max_y * 7200)/254;
1192 0 : m = fb_find_best_mode(&var, head);
1193 0 : if (m) {
1194 0 : best = m;
1195 0 : goto finished;
1196 : }
1197 : }
1198 :
1199 : /* use first detailed mode */
1200 0 : if (md) {
1201 : best = md;
1202 : goto finished;
1203 : }
1204 :
1205 : /* last resort, use the very first mode */
1206 0 : best = m1;
1207 : finished:
1208 0 : return best;
1209 : }
1210 : EXPORT_SYMBOL(fb_find_best_display);
1211 :
1212 : EXPORT_SYMBOL(fb_videomode_to_var);
1213 : EXPORT_SYMBOL(fb_var_to_videomode);
1214 : EXPORT_SYMBOL(fb_mode_is_equal);
1215 : EXPORT_SYMBOL(fb_add_videomode);
1216 : EXPORT_SYMBOL(fb_match_mode);
1217 : EXPORT_SYMBOL(fb_find_best_mode);
1218 : EXPORT_SYMBOL(fb_find_nearest_mode);
1219 : EXPORT_SYMBOL(fb_videomode_to_modelist);
1220 : EXPORT_SYMBOL(fb_find_mode);
1221 : EXPORT_SYMBOL(fb_find_mode_cvt);
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