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/fb.h>
16 : #include <linux/kernel.h>
17 :
18 : #undef DEBUG
19 :
20 : #define name_matches(v, s, l) \
21 : ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
22 : #define res_matches(v, x, y) \
23 : ((v).xres == (x) && (v).yres == (y))
24 :
25 : #ifdef DEBUG
26 : #define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args)
27 : #else
28 : #define DPRINTK(fmt, args...)
29 : #endif
30 :
31 : const char *fb_mode_option;
32 : EXPORT_SYMBOL_GPL(fb_mode_option);
33 :
34 : /*
35 : * Standard video mode definitions (taken from XFree86)
36 : */
37 :
38 1 : static const struct fb_videomode modedb[] = {
39 : {
40 : /* 640x400 @ 70 Hz, 31.5 kHz hsync */
41 : NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
42 : 0, FB_VMODE_NONINTERLACED
43 : }, {
44 : /* 640x480 @ 60 Hz, 31.5 kHz hsync */
45 : NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
46 : 0, FB_VMODE_NONINTERLACED
47 : }, {
48 : /* 800x600 @ 56 Hz, 35.15 kHz hsync */
49 : NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2,
50 : 0, FB_VMODE_NONINTERLACED
51 : }, {
52 : /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
53 : NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8,
54 : 0, FB_VMODE_INTERLACED
55 : }, {
56 : /* 640x400 @ 85 Hz, 37.86 kHz hsync */
57 : NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
58 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
59 : }, {
60 : /* 640x480 @ 72 Hz, 36.5 kHz hsync */
61 : NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3,
62 : 0, FB_VMODE_NONINTERLACED
63 : }, {
64 : /* 640x480 @ 75 Hz, 37.50 kHz hsync */
65 : NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
66 : 0, FB_VMODE_NONINTERLACED
67 : }, {
68 : /* 800x600 @ 60 Hz, 37.8 kHz hsync */
69 : NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
70 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
71 : }, {
72 : /* 640x480 @ 85 Hz, 43.27 kHz hsync */
73 : NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3,
74 : 0, FB_VMODE_NONINTERLACED
75 : }, {
76 : /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
77 : NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10,
78 : 0, FB_VMODE_INTERLACED
79 : }, {
80 : /* 800x600 @ 72 Hz, 48.0 kHz hsync */
81 : NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
82 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
83 : }, {
84 : /* 1024x768 @ 60 Hz, 48.4 kHz hsync */
85 : NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6,
86 : 0, FB_VMODE_NONINTERLACED
87 : }, {
88 : /* 640x480 @ 100 Hz, 53.01 kHz hsync */
89 : NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6,
90 : 0, FB_VMODE_NONINTERLACED
91 : }, {
92 : /* 1152x864 @ 60 Hz, 53.5 kHz hsync */
93 : NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8,
94 : 0, FB_VMODE_NONINTERLACED
95 : }, {
96 : /* 800x600 @ 85 Hz, 55.84 kHz hsync */
97 : NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5,
98 : 0, FB_VMODE_NONINTERLACED
99 : }, {
100 : /* 1024x768 @ 70 Hz, 56.5 kHz hsync */
101 : NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
102 : 0, FB_VMODE_NONINTERLACED
103 : }, {
104 : /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
105 : NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12,
106 : 0, FB_VMODE_INTERLACED
107 : }, {
108 : /* 800x600 @ 100 Hz, 64.02 kHz hsync */
109 : NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6,
110 : 0, FB_VMODE_NONINTERLACED
111 : }, {
112 : /* 1024x768 @ 76 Hz, 62.5 kHz hsync */
113 : NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3,
114 : 0, FB_VMODE_NONINTERLACED
115 : }, {
116 : /* 1152x864 @ 70 Hz, 62.4 kHz hsync */
117 : NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10,
118 : 0, FB_VMODE_NONINTERLACED
119 : }, {
120 : /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
121 : NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3,
122 : 0, FB_VMODE_NONINTERLACED
123 : }, {
124 : /* 1400x1050 @ 60Hz, 63.9 kHz hsync */
125 : NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3,
126 : 0, FB_VMODE_NONINTERLACED
127 : }, {
128 : /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
129 : NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13,
130 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, 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, FB_VMODE_NONINTERLACED
135 : }, {
136 : /* 1024x768 @ 85 Hz, 70.24 kHz hsync */
137 : NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6,
138 : 0, FB_VMODE_NONINTERLACED
139 : }, {
140 : /* 1152x864 @ 78 Hz, 70.8 kHz hsync */
141 : NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12,
142 : 0, FB_VMODE_NONINTERLACED
143 : }, {
144 : /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
145 : NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8,
146 : 0, FB_VMODE_NONINTERLACED
147 : }, {
148 : /* 1600x1200 @ 60Hz, 75.00 kHz hsync */
149 : NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
150 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
151 : }, {
152 : /* 1152x864 @ 84 Hz, 76.0 kHz hsync */
153 : NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12,
154 : 0, FB_VMODE_NONINTERLACED
155 : }, {
156 : /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
157 : NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3,
158 : 0, FB_VMODE_NONINTERLACED
159 : }, {
160 : /* 1024x768 @ 100Hz, 80.21 kHz hsync */
161 : NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10,
162 : 0, FB_VMODE_NONINTERLACED
163 : }, {
164 : /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
165 : NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3,
166 : 0, FB_VMODE_NONINTERLACED
167 : }, {
168 : /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
169 : NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
170 : 0, FB_VMODE_NONINTERLACED
171 : }, {
172 : /* 1152x864 @ 100 Hz, 89.62 kHz hsync */
173 : NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19,
174 : 0, FB_VMODE_NONINTERLACED
175 : }, {
176 : /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
177 : NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
178 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
179 : }, {
180 : /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
181 : NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
182 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
183 : }, {
184 : /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
185 : NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,
186 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
187 : }, {
188 : /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
189 : NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
190 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
191 : }, {
192 : /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
193 : NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15,
194 : 0, FB_VMODE_NONINTERLACED
195 : }, {
196 : /* 1800x1440 @ 64Hz, 96.15 kHz hsync */
197 : NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
198 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
199 : }, {
200 : /* 1800x1440 @ 70Hz, 104.52 kHz hsync */
201 : NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
202 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
203 : }, {
204 : /* 512x384 @ 78 Hz, 31.50 kHz hsync */
205 : NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3,
206 : 0, FB_VMODE_NONINTERLACED
207 : }, {
208 : /* 512x384 @ 85 Hz, 34.38 kHz hsync */
209 : NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3,
210 : 0, FB_VMODE_NONINTERLACED
211 : }, {
212 : /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
213 : NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1,
214 : 0, FB_VMODE_DOUBLE
215 : }, {
216 : /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
217 : NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1,
218 : 0, FB_VMODE_DOUBLE
219 : }, {
220 : /* 320x240 @ 72 Hz, 36.5 kHz hsync */
221 : NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2,
222 : 0, FB_VMODE_DOUBLE
223 : }, {
224 : /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
225 : NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1,
226 : 0, FB_VMODE_DOUBLE
227 : }, {
228 : /* 400x300 @ 60 Hz, 37.8 kHz hsync */
229 : NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2,
230 : 0, FB_VMODE_DOUBLE
231 : }, {
232 : /* 400x300 @ 72 Hz, 48.0 kHz hsync */
233 : NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3,
234 : 0, FB_VMODE_DOUBLE
235 : }, {
236 : /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
237 : NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1,
238 : 0, FB_VMODE_DOUBLE
239 : }, {
240 : /* 480x300 @ 60 Hz, 37.8 kHz hsync */
241 : NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2,
242 : 0, FB_VMODE_DOUBLE
243 : }, {
244 : /* 480x300 @ 63 Hz, 39.6 kHz hsync */
245 : NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2,
246 : 0, FB_VMODE_DOUBLE
247 : }, {
248 : /* 480x300 @ 72 Hz, 48.0 kHz hsync */
249 : NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3,
250 : 0, FB_VMODE_DOUBLE
251 : }, {
252 : /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
253 : NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
254 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
255 : FB_VMODE_NONINTERLACED
256 : }, {
257 : /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
258 : NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,
259 : FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
260 : }, {
261 : /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
262 : NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5,
263 : 0, FB_VMODE_NONINTERLACED
264 : }, {
265 : /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
266 : NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3,
267 : 0, FB_VMODE_NONINTERLACED
268 : }, {
269 : /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
270 : NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5,
271 : 0, FB_VMODE_INTERLACED
272 : }, {
273 : /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
274 : NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5,
275 : 0, FB_VMODE_INTERLACED
276 : },
277 : };
278 :
279 : #ifdef CONFIG_FB_MODE_HELPERS
280 1 : const struct fb_videomode vesa_modes[] = {
281 : /* 0 640x350-85 VESA */
282 : { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,
283 : FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
284 : /* 1 640x400-85 VESA */
285 : { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,
286 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
287 : /* 2 720x400-85 VESA */
288 : { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,
289 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
290 : /* 3 640x480-60 VESA */
291 : { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
292 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
293 : /* 4 640x480-72 VESA */
294 : { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,
295 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
296 : /* 5 640x480-75 VESA */
297 : { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
298 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
299 : /* 6 640x480-85 VESA */
300 : { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
301 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
302 : /* 7 800x600-56 VESA */
303 : { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,
304 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
305 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
306 : /* 8 800x600-60 VESA */
307 : { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
308 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
309 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
310 : /* 9 800x600-72 VESA */
311 : { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
312 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
313 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
314 : /* 10 800x600-75 VESA */
315 : { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
316 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
317 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
318 : /* 11 800x600-85 VESA */
319 : { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
320 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
321 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
322 : /* 12 1024x768i-43 VESA */
323 : { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,
324 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
325 : FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
326 : /* 13 1024x768-60 VESA */
327 : { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
328 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
329 : /* 14 1024x768-70 VESA */
330 : { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
331 : 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
332 : /* 15 1024x768-75 VESA */
333 : { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
334 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
335 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
336 : /* 16 1024x768-85 VESA */
337 : { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
338 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
339 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
340 : /* 17 1152x864-75 VESA */
341 : { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
342 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
343 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
344 : /* 18 1280x960-60 VESA */
345 : { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
346 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
347 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
348 : /* 19 1280x960-85 VESA */
349 : { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
350 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
351 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
352 : /* 20 1280x1024-60 VESA */
353 : { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
354 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
355 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
356 : /* 21 1280x1024-75 VESA */
357 : { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
358 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
359 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
360 : /* 22 1280x1024-85 VESA */
361 : { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
362 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
363 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
364 : /* 23 1600x1200-60 VESA */
365 : { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
366 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
367 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
368 : /* 24 1600x1200-65 VESA */
369 : { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,
370 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
371 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
372 : /* 25 1600x1200-70 VESA */
373 : { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
374 : FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
375 : FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
376 : /* 26 1600x1200-75 VESA */
377 : { NULL, 75, 1600, 1200, 4938, 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 : /* 27 1600x1200-85 VESA */
381 : { NULL, 85, 1600, 1200, 4357, 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 : /* 28 1792x1344-60 VESA */
385 : { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,
386 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
387 : /* 29 1792x1344-75 VESA */
388 : { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,
389 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
390 : /* 30 1856x1392-60 VESA */
391 : { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,
392 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
393 : /* 31 1856x1392-75 VESA */
394 : { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,
395 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
396 : /* 32 1920x1440-60 VESA */
397 : { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,
398 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
399 : /* 33 1920x1440-75 VESA */
400 : { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
401 : FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
402 : };
403 : EXPORT_SYMBOL(vesa_modes);
404 : #endif /* CONFIG_FB_MODE_HELPERS */
405 :
406 : /**
407 : * fb_try_mode - test a video mode
408 : * @var: frame buffer user defined part of display
409 : * @info: frame buffer info structure
410 : * @mode: frame buffer video mode structure
411 : * @bpp: color depth in bits per pixel
412 : *
413 : * Tries a video mode to test it's validity for device @info.
414 : *
415 : * Returns 1 on success.
416 : *
417 : */
418 :
419 : static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
420 : const struct fb_videomode *mode, unsigned int bpp)
421 : {
422 0 : int err = 0;
423 :
424 : DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname",
425 : mode->xres, mode->yres, bpp, mode->refresh);
426 0 : var->xres = mode->xres;
427 0 : var->yres = mode->yres;
428 0 : var->xres_virtual = mode->xres;
429 0 : var->yres_virtual = mode->yres;
430 0 : var->xoffset = 0;
431 0 : var->yoffset = 0;
432 0 : var->bits_per_pixel = bpp;
433 0 : var->activate |= FB_ACTIVATE_TEST;
434 0 : var->pixclock = mode->pixclock;
435 0 : var->left_margin = mode->left_margin;
436 0 : var->right_margin = mode->right_margin;
437 0 : var->upper_margin = mode->upper_margin;
438 0 : var->lower_margin = mode->lower_margin;
439 0 : var->hsync_len = mode->hsync_len;
440 0 : var->vsync_len = mode->vsync_len;
441 0 : var->sync = mode->sync;
442 0 : var->vmode = mode->vmode;
443 0 : if (info->fbops->fb_check_var)
444 0 : err = info->fbops->fb_check_var(var, info);
445 0 : var->activate &= ~FB_ACTIVATE_TEST;
446 0 : return err;
447 : }
448 :
449 : /**
450 : * fb_find_mode - finds a valid video mode
451 : * @var: frame buffer user defined part of display
452 : * @info: frame buffer info structure
453 : * @mode_option: string video mode to find
454 : * @db: video mode database
455 : * @dbsize: size of @db
456 : * @default_mode: default video mode to fall back to
457 : * @default_bpp: default color depth in bits per pixel
458 : *
459 : * Finds a suitable video mode, starting with the specified mode
460 : * in @mode_option with fallback to @default_mode. If
461 : * @default_mode fails, all modes in the video mode database will
462 : * be tried.
463 : *
464 : * Valid mode specifiers for @mode_option:
465 : *
466 : * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
467 : * <name>[-<bpp>][@<refresh>]
468 : *
469 : * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
470 : * <name> a string.
471 : *
472 : * If 'M' is present after yres (and before refresh/bpp if present),
473 : * the function will compute the timings using VESA(tm) Coordinated
474 : * Video Timings (CVT). If 'R' is present after 'M', will compute with
475 : * reduced blanking (for flatpanels). If 'i' is present, compute
476 : * interlaced mode. If 'm' is present, add margins equal to 1.8%
477 : * of xres rounded down to 8 pixels, and 1.8% of yres. The char
478 : * 'i' and 'm' must be after 'M' and 'R'. Example:
479 : *
480 : * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
481 : *
482 : * NOTE: The passed struct @var is _not_ cleared! This allows you
483 : * to supply values for e.g. the grayscale and accel_flags fields.
484 : *
485 : * Returns zero for failure, 1 if using specified @mode_option,
486 : * 2 if using specified @mode_option with an ignored refresh rate,
487 : * 3 if default mode is used, 4 if fall back to any valid mode.
488 : *
489 : */
490 :
491 : int fb_find_mode(struct fb_var_screeninfo *var,
492 : struct fb_info *info, const char *mode_option,
493 : const struct fb_videomode *db, unsigned int dbsize,
494 : const struct fb_videomode *default_mode,
495 0 : unsigned int default_bpp)
496 0 : {
497 0 : int i;
498 0 :
499 0 : /* Set up defaults */
500 0 : if (!db) {
501 0 : db = modedb;
502 0 : dbsize = ARRAY_SIZE(modedb);
503 0 : }
504 0 :
505 0 : if (!default_mode)
506 0 : default_mode = &db[0];
507 0 :
508 0 : if (!default_bpp)
509 0 : default_bpp = 8;
510 0 :
511 0 : /* Did the user specify a video mode? */
512 0 : if (!mode_option)
513 0 : mode_option = fb_mode_option;
514 0 : if (mode_option) {
515 0 : const char *name = mode_option;
516 0 : unsigned int namelen = strlen(name);
517 0 : int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
518 0 : unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
519 0 : int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
520 0 : u32 best, diff, tdiff;
521 0 :
522 0 : for (i = namelen-1; i >= 0; i--) {
523 0 : switch (name[i]) {
524 0 : case '@':
525 0 : namelen = i;
526 0 : if (!refresh_specified && !bpp_specified &&
527 0 : !yres_specified) {
528 0 : refresh = simple_strtol(&name[i+1], NULL, 10);
529 0 : refresh_specified = 1;
530 0 : if (cvt || rb)
531 0 : cvt = 0;
532 : } else
533 0 : goto done;
534 0 : break;
535 0 : case '-':
536 0 : namelen = i;
537 0 : if (!bpp_specified && !yres_specified) {
538 0 : bpp = simple_strtol(&name[i+1], NULL, 10);
539 0 : bpp_specified = 1;
540 0 : if (cvt || rb)
541 0 : cvt = 0;
542 : } else
543 0 : goto done;
544 0 : break;
545 0 : case 'x':
546 0 : if (!yres_specified) {
547 0 : yres = simple_strtol(&name[i+1], NULL, 10);
548 0 : yres_specified = 1;
549 : } else
550 0 : goto done;
551 0 : break;
552 0 : case '0' ... '9':
553 0 : break;
554 0 : case 'M':
555 0 : if (!yres_specified)
556 0 : cvt = 1;
557 0 : break;
558 0 : case 'R':
559 0 : if (!cvt)
560 0 : rb = 1;
561 0 : break;
562 0 : case 'm':
563 0 : if (!cvt)
564 0 : margins = 1;
565 0 : break;
566 0 : case 'i':
567 0 : if (!cvt)
568 0 : interlace = 1;
569 0 : break;
570 0 : default:
571 0 : goto done;
572 : }
573 : }
574 0 : if (i < 0 && yres_specified) {
575 0 : xres = simple_strtol(name, NULL, 10);
576 0 : res_specified = 1;
577 : }
578 : done:
579 0 : if (cvt) {
580 : struct fb_videomode cvt_mode;
581 0 : int ret;
582 :
583 : DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
584 : (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
585 : "", (margins) ? " with margins" : "", (interlace) ?
586 : " interlaced" : "");
587 :
588 0 : memset(&cvt_mode, 0, sizeof(cvt_mode));
589 0 : cvt_mode.xres = xres;
590 0 : cvt_mode.yres = yres;
591 0 : cvt_mode.refresh = (refresh) ? refresh : 60;
592 :
593 0 : if (interlace)
594 0 : cvt_mode.vmode |= FB_VMODE_INTERLACED;
595 : else
596 0 : cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
597 :
598 0 : ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
599 :
600 0 : if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
601 : DPRINTK("modedb CVT: CVT mode ok\n");
602 0 : return 1;
603 : }
604 :
605 : DPRINTK("CVT mode invalid, getting mode from database\n");
606 : }
607 :
608 : DPRINTK("Trying specified video mode%s %ix%i\n",
609 : refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
610 :
611 0 : if (!refresh_specified) {
612 : /*
613 : * If the caller has provided a custom mode database and a
614 : * valid monspecs structure, we look for the mode with the
615 : * highest refresh rate. Otherwise we play it safe it and
616 : * try to find a mode with a refresh rate closest to the
617 : * standard 60 Hz.
618 : */
619 0 : if (db != modedb &&
620 : info->monspecs.vfmin && info->monspecs.vfmax &&
621 : info->monspecs.hfmin && info->monspecs.hfmax &&
622 : info->monspecs.dclkmax) {
623 0 : refresh = 1000;
624 : } else {
625 0 : refresh = 60;
626 : }
627 : }
628 :
629 0 : diff = -1;
630 0 : best = -1;
631 0 : for (i = 0; i < dbsize; i++) {
632 0 : if ((name_matches(db[i], name, namelen) ||
633 0 : (res_specified && res_matches(db[i], xres, yres))) &&
634 : !fb_try_mode(var, info, &db[i], bpp)) {
635 0 : if (refresh_specified && db[i].refresh == refresh) {
636 0 : return 1;
637 : } else {
638 0 : if (abs(db[i].refresh - refresh) < diff) {
639 0 : diff = abs(db[i].refresh - refresh);
640 0 : best = i;
641 : }
642 : }
643 : }
644 : }
645 0 : if (best != -1) {
646 0 : fb_try_mode(var, info, &db[best], bpp);
647 0 : return (refresh_specified) ? 2 : 1;
648 : }
649 :
650 0 : diff = 2 * (xres + yres);
651 0 : best = -1;
652 : DPRINTK("Trying best-fit modes\n");
653 0 : for (i = 0; i < dbsize; i++) {
654 0 : DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);
655 0 : if (!fb_try_mode(var, info, &db[i], bpp)) {
656 0 : tdiff = abs(db[i].xres - xres) +
657 0 : abs(db[i].yres - yres);
658 :
659 : /*
660 : * Penalize modes with resolutions smaller
661 : * than requested.
662 : */
663 0 : if (xres > db[i].xres || yres > db[i].yres)
664 0 : tdiff += xres + yres;
665 :
666 0 : if (diff > tdiff) {
667 0 : diff = tdiff;
668 0 : best = i;
669 : }
670 : }
671 : }
672 0 : if (best != -1) {
673 0 : fb_try_mode(var, info, &db[best], bpp);
674 0 : return 5;
675 : }
676 : }
677 :
678 : DPRINTK("Trying default video mode\n");
679 0 : if (!fb_try_mode(var, info, default_mode, default_bpp))
680 0 : return 3;
681 :
682 : DPRINTK("Trying all modes\n");
683 0 : for (i = 0; i < dbsize; i++)
684 0 : if (!fb_try_mode(var, info, &db[i], default_bpp))
685 0 : return 4;
686 :
687 : DPRINTK("No valid mode found\n");
688 0 : return 0;
689 : }
690 :
691 : /**
692 : * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
693 : * @mode: pointer to struct fb_videomode
694 : * @var: pointer to struct fb_var_screeninfo
695 : */
696 : void fb_var_to_videomode(struct fb_videomode *mode,
697 : const struct fb_var_screeninfo *var)
698 37 : {
699 37 : u32 pixclock, hfreq, htotal, vtotal;
700 37 :
701 74 : mode->name = NULL;
702 37 : mode->xres = var->xres;
703 37 : mode->yres = var->yres;
704 37 : mode->pixclock = var->pixclock;
705 37 : mode->hsync_len = var->hsync_len;
706 37 : mode->vsync_len = var->vsync_len;
707 37 : mode->left_margin = var->left_margin;
708 37 : mode->right_margin = var->right_margin;
709 37 : mode->upper_margin = var->upper_margin;
710 37 : mode->lower_margin = var->lower_margin;
711 37 : mode->sync = var->sync;
712 74 : mode->vmode = var->vmode & FB_VMODE_MASK;
713 37 : mode->flag = FB_MODE_IS_FROM_VAR;
714 37 : mode->refresh = 0;
715 :
716 111 : if (!var->pixclock)
717 37 : return;
718 :
719 74 : pixclock = PICOS2KHZ(var->pixclock) * 1000;
720 :
721 185 : htotal = var->xres + var->right_margin + var->hsync_len +
722 : var->left_margin;
723 185 : vtotal = var->yres + var->lower_margin + var->vsync_len +
724 : var->upper_margin;
725 :
726 111 : if (var->vmode & FB_VMODE_INTERLACED)
727 37 : vtotal /= 2;
728 111 : if (var->vmode & FB_VMODE_DOUBLE)
729 37 : vtotal *= 2;
730 :
731 37 : hfreq = pixclock/htotal;
732 37 : mode->refresh = hfreq/vtotal;
733 37 : }
734 :
735 : /**
736 : * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
737 : * @var: pointer to struct fb_var_screeninfo
738 : * @mode: pointer to struct fb_videomode
739 : */
740 : void fb_videomode_to_var(struct fb_var_screeninfo *var,
741 : const struct fb_videomode *mode)
742 : {
743 2 : var->xres = mode->xres;
744 2 : var->yres = mode->yres;
745 2 : var->xres_virtual = mode->xres;
746 2 : var->yres_virtual = mode->yres;
747 2 : var->xoffset = 0;
748 2 : var->yoffset = 0;
749 2 : var->pixclock = mode->pixclock;
750 2 : var->left_margin = mode->left_margin;
751 2 : var->right_margin = mode->right_margin;
752 2 : var->upper_margin = mode->upper_margin;
753 2 : var->lower_margin = mode->lower_margin;
754 2 : var->hsync_len = mode->hsync_len;
755 2 : var->vsync_len = mode->vsync_len;
756 2 : var->sync = mode->sync;
757 4 : var->vmode = mode->vmode & FB_VMODE_MASK;
758 2 : }
759 :
760 : /**
761 : * fb_mode_is_equal - compare 2 videomodes
762 : * @mode1: first videomode
763 : * @mode2: second videomode
764 : *
765 : * RETURNS:
766 : * 1 if equal, 0 if not
767 : */
768 : int fb_mode_is_equal(const struct fb_videomode *mode1,
769 : const struct fb_videomode *mode2)
770 : {
771 608 : return (mode1->xres == mode2->xres &&
772 : mode1->yres == mode2->yres &&
773 : mode1->pixclock == mode2->pixclock &&
774 : mode1->hsync_len == mode2->hsync_len &&
775 : mode1->vsync_len == mode2->vsync_len &&
776 : mode1->left_margin == mode2->left_margin &&
777 : mode1->right_margin == mode2->right_margin &&
778 : mode1->upper_margin == mode2->upper_margin &&
779 : mode1->lower_margin == mode2->lower_margin &&
780 : mode1->sync == mode2->sync &&
781 : mode1->vmode == mode2->vmode);
782 : }
783 :
784 : /**
785 : * fb_find_best_mode - find best matching videomode
786 : * @var: pointer to struct fb_var_screeninfo
787 : * @head: pointer to struct list_head of modelist
788 : *
789 : * RETURNS:
790 : * struct fb_videomode, NULL if none found
791 : *
792 : * IMPORTANT:
793 : * This function assumes that all modelist entries in
794 : * info->modelist are valid.
795 : *
796 : * NOTES:
797 : * Finds best matching videomode which has an equal or greater dimension than
798 : * var->xres and var->yres. If more than 1 videomode is found, will return
799 : * the videomode with the highest refresh rate
800 : */
801 : const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
802 : struct list_head *head)
803 : {
804 0 : struct list_head *pos;
805 0 : struct fb_modelist *modelist;
806 0 : struct fb_videomode *mode, *best = NULL;
807 0 : u32 diff = -1;
808 0 :
809 0 : list_for_each(pos, head) {
810 0 : u32 d;
811 0 :
812 0 : modelist = list_entry(pos, struct fb_modelist, list);
813 0 : mode = &modelist->mode;
814 :
815 0 : if (mode->xres >= var->xres && mode->yres >= var->yres) {
816 0 : d = (mode->xres - var->xres) +
817 : (mode->yres - var->yres);
818 0 : if (diff > d) {
819 0 : diff = d;
820 0 : best = mode;
821 0 : } else if (diff == d && best &&
822 : mode->refresh > best->refresh)
823 0 : best = mode;
824 : }
825 : }
826 0 : return best;
827 : }
828 :
829 : /**
830 : * fb_find_nearest_mode - find closest videomode
831 : *
832 : * @mode: pointer to struct fb_videomode
833 : * @head: pointer to modelist
834 : *
835 : * Finds best matching videomode, smaller or greater in dimension.
836 : * If more than 1 videomode is found, will return the videomode with
837 : * the closest refresh rate.
838 : */
839 : const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
840 : struct list_head *head)
841 : {
842 0 : struct list_head *pos;
843 0 : struct fb_modelist *modelist;
844 0 : struct fb_videomode *cmode, *best = NULL;
845 0 : u32 diff = -1, diff_refresh = -1;
846 0 :
847 0 : list_for_each(pos, head) {
848 0 : u32 d;
849 0 :
850 0 : modelist = list_entry(pos, struct fb_modelist, list);
851 0 : cmode = &modelist->mode;
852 0 :
853 0 : d = abs(cmode->xres - mode->xres) +
854 0 : abs(cmode->yres - mode->yres);
855 0 : if (diff > d) {
856 0 : diff = d;
857 0 : best = cmode;
858 0 : } else if (diff == d) {
859 0 : d = abs(cmode->refresh - mode->refresh);
860 0 : if (diff_refresh > d) {
861 0 : diff_refresh = d;
862 0 : best = cmode;
863 : }
864 : }
865 : }
866 :
867 0 : return best;
868 : }
869 :
870 : /**
871 : * fb_match_mode - find a videomode which exactly matches the timings in var
872 : * @var: pointer to struct fb_var_screeninfo
873 : * @head: pointer to struct list_head of modelist
874 : *
875 : * RETURNS:
876 : * struct fb_videomode, NULL if none found
877 : */
878 : const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
879 : struct list_head *head)
880 : {
881 0 : struct list_head *pos;
882 0 : struct fb_modelist *modelist;
883 0 : struct fb_videomode *m, mode;
884 0 :
885 0 : fb_var_to_videomode(&mode, var);
886 0 : list_for_each(pos, head) {
887 0 : modelist = list_entry(pos, struct fb_modelist, list);
888 0 : m = &modelist->mode;
889 0 : if (fb_mode_is_equal(m, &mode))
890 0 : return m;
891 : }
892 0 : return NULL;
893 : }
894 :
895 : /**
896 : * fb_add_videomode: adds videomode entry to modelist
897 : * @mode: videomode to add
898 : * @head: struct list_head of modelist
899 : *
900 : * NOTES:
901 : * Will only add unmatched mode entries
902 : */
903 : int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
904 : {
905 13 : struct list_head *pos;
906 13 : struct fb_modelist *modelist;
907 13 : struct fb_videomode *m;
908 26 : int found = 0;
909 13 :
910 104 : list_for_each(pos, head) {
911 65 : modelist = list_entry(pos, struct fb_modelist, list);
912 26 : m = &modelist->mode;
913 52 : if (fb_mode_is_equal(m, mode)) {
914 13 : found = 1;
915 13 : break;
916 13 : }
917 : }
918 52 : if (!found) {
919 65 : modelist = kmalloc(sizeof(struct fb_modelist),
920 : GFP_KERNEL);
921 :
922 26 : if (!modelist)
923 13 : return -ENOMEM;
924 13 : modelist->mode = *mode;
925 26 : list_add(&modelist->list, head);
926 : }
927 39 : return 0;
928 : }
929 :
930 : /**
931 : * fb_delete_videomode: removed videomode entry from modelist
932 : * @mode: videomode to remove
933 : * @head: struct list_head of modelist
934 : *
935 : * NOTES:
936 : * Will remove all matching mode entries
937 : */
938 : void fb_delete_videomode(const struct fb_videomode *mode,
939 : struct list_head *head)
940 12 : {
941 12 : struct list_head *pos, *n;
942 12 : struct fb_modelist *modelist;
943 12 : struct fb_videomode *m;
944 12 :
945 120 : list_for_each_safe(pos, n, head) {
946 60 : modelist = list_entry(pos, struct fb_modelist, list);
947 24 : m = &modelist->mode;
948 48 : if (fb_mode_is_equal(m, mode)) {
949 24 : list_del(pos);
950 12 : kfree(pos);
951 : }
952 12 : }
953 : }
954 :
955 : /**
956 : * fb_destroy_modelist: destroy modelist
957 : * @head: struct list_head of modelist
958 : */
959 : void fb_destroy_modelist(struct list_head *head)
960 : {
961 2 : struct list_head *pos, *n;
962 2 :
963 14 : list_for_each_safe(pos, n, head) {
964 6 : list_del(pos);
965 6 : kfree(pos);
966 : }
967 : }
968 : EXPORT_SYMBOL_GPL(fb_destroy_modelist);
969 :
970 2 : /**
971 : * fb_videomode_to_modelist: convert mode array to mode list
972 : * @modedb: array of struct fb_videomode
973 : * @num: number of entries in array
974 : * @head: struct list_head of modelist
975 : */
976 : void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
977 : struct list_head *head)
978 : {
979 1 : int i;
980 1 :
981 2 : INIT_LIST_HEAD(head);
982 :
983 5 : for (i = 0; i < num; i++) {
984 9 : if (fb_add_videomode(&modedb[i], head))
985 2 : return;
986 : }
987 : }
988 :
989 : const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
990 1 : struct list_head *head)
991 : {
992 0 : struct list_head *pos;
993 0 : struct fb_modelist *modelist;
994 0 : const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
995 0 : int first = 0;
996 0 :
997 0 : if (!head->prev || !head->next || list_empty(head))
998 0 : goto finished;
999 0 :
1000 0 : /* get the first detailed mode and the very first mode */
1001 0 : list_for_each(pos, head) {
1002 0 : modelist = list_entry(pos, struct fb_modelist, list);
1003 0 : m = &modelist->mode;
1004 :
1005 0 : if (!first) {
1006 0 : m1 = m;
1007 0 : first = 1;
1008 : }
1009 :
1010 0 : if (m->flag & FB_MODE_IS_FIRST) {
1011 0 : md = m;
1012 0 : break;
1013 : }
1014 : }
1015 :
1016 : /* first detailed timing is preferred */
1017 0 : if (specs->misc & FB_MISC_1ST_DETAIL) {
1018 0 : best = md;
1019 0 : goto finished;
1020 : }
1021 :
1022 : /* find best mode based on display width and height */
1023 0 : if (specs->max_x && specs->max_y) {
1024 : struct fb_var_screeninfo var;
1025 :
1026 0 : memset(&var, 0, sizeof(struct fb_var_screeninfo));
1027 0 : var.xres = (specs->max_x * 7200)/254;
1028 0 : var.yres = (specs->max_y * 7200)/254;
1029 0 : m = fb_find_best_mode(&var, head);
1030 0 : if (m) {
1031 0 : best = m;
1032 0 : goto finished;
1033 : }
1034 : }
1035 :
1036 : /* use first detailed mode */
1037 0 : if (md) {
1038 0 : best = md;
1039 0 : goto finished;
1040 : }
1041 :
1042 : /* last resort, use the very first mode */
1043 0 : best = m1;
1044 0 : finished:
1045 0 : return best;
1046 : }
1047 : EXPORT_SYMBOL(fb_find_best_display);
1048 :
1049 : EXPORT_SYMBOL(fb_videomode_to_var);
1050 : EXPORT_SYMBOL(fb_var_to_videomode);
1051 : EXPORT_SYMBOL(fb_mode_is_equal);
1052 : EXPORT_SYMBOL(fb_add_videomode);
1053 : EXPORT_SYMBOL(fb_match_mode);
1054 : EXPORT_SYMBOL(fb_find_best_mode);
1055 : EXPORT_SYMBOL(fb_find_nearest_mode);
1056 : EXPORT_SYMBOL(fb_videomode_to_modelist);
1057 : EXPORT_SYMBOL(fb_find_mode);
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