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1da177e4 LT |
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> | |
1da177e4 | 15 | #include <linux/fb.h> |
1da177e4 LT |
16 | |
17 | #undef DEBUG | |
18 | ||
19 | #define name_matches(v, s, l) \ | |
20 | ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l)) | |
21 | #define res_matches(v, x, y) \ | |
22 | ((v).xres == (x) && (v).yres == (y)) | |
23 | ||
24 | #ifdef DEBUG | |
5ae12170 | 25 | #define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args) |
1da177e4 LT |
26 | #else |
27 | #define DPRINTK(fmt, args...) | |
28 | #endif | |
29 | ||
9a054fba | 30 | const char *fb_mode_option; |
659179b2 | 31 | EXPORT_SYMBOL_GPL(fb_mode_option); |
1da177e4 LT |
32 | |
33 | /* | |
34 | * Standard video mode definitions (taken from XFree86) | |
35 | */ | |
36 | ||
1da177e4 LT |
37 | static const struct fb_videomode modedb[] = { |
38 | { | |
39 | /* 640x400 @ 70 Hz, 31.5 kHz hsync */ | |
40 | NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, | |
41 | 0, FB_VMODE_NONINTERLACED | |
42 | }, { | |
43 | /* 640x480 @ 60 Hz, 31.5 kHz hsync */ | |
44 | NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, | |
45 | 0, FB_VMODE_NONINTERLACED | |
46 | }, { | |
47 | /* 800x600 @ 56 Hz, 35.15 kHz hsync */ | |
48 | NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, | |
49 | 0, FB_VMODE_NONINTERLACED | |
50 | }, { | |
51 | /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ | |
52 | NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, | |
53 | 0, FB_VMODE_INTERLACED | |
54 | }, { | |
55 | /* 640x400 @ 85 Hz, 37.86 kHz hsync */ | |
56 | NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, | |
57 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
58 | }, { | |
59 | /* 640x480 @ 72 Hz, 36.5 kHz hsync */ | |
60 | NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, | |
61 | 0, FB_VMODE_NONINTERLACED | |
62 | }, { | |
63 | /* 640x480 @ 75 Hz, 37.50 kHz hsync */ | |
64 | NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, | |
65 | 0, FB_VMODE_NONINTERLACED | |
66 | }, { | |
67 | /* 800x600 @ 60 Hz, 37.8 kHz hsync */ | |
68 | NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, | |
69 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
70 | }, { | |
71 | /* 640x480 @ 85 Hz, 43.27 kHz hsync */ | |
72 | NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, | |
73 | 0, FB_VMODE_NONINTERLACED | |
74 | }, { | |
75 | /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ | |
9d775e17 | 76 | NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, |
1da177e4 LT |
77 | 0, FB_VMODE_INTERLACED |
78 | }, { | |
79 | /* 800x600 @ 72 Hz, 48.0 kHz hsync */ | |
80 | NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, | |
81 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
82 | }, { | |
83 | /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ | |
84 | NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, | |
85 | 0, FB_VMODE_NONINTERLACED | |
86 | }, { | |
87 | /* 640x480 @ 100 Hz, 53.01 kHz hsync */ | |
88 | NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, | |
89 | 0, FB_VMODE_NONINTERLACED | |
90 | }, { | |
91 | /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ | |
92 | NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, | |
93 | 0, FB_VMODE_NONINTERLACED | |
94 | }, { | |
95 | /* 800x600 @ 85 Hz, 55.84 kHz hsync */ | |
96 | NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, | |
97 | 0, FB_VMODE_NONINTERLACED | |
98 | }, { | |
99 | /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ | |
100 | NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, | |
101 | 0, FB_VMODE_NONINTERLACED | |
102 | }, { | |
103 | /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ | |
104 | NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, | |
105 | 0, FB_VMODE_INTERLACED | |
106 | }, { | |
107 | /* 800x600 @ 100 Hz, 64.02 kHz hsync */ | |
108 | NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, | |
109 | 0, FB_VMODE_NONINTERLACED | |
110 | }, { | |
111 | /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ | |
112 | NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, | |
113 | 0, FB_VMODE_NONINTERLACED | |
114 | }, { | |
115 | /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ | |
116 | NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, | |
117 | 0, FB_VMODE_NONINTERLACED | |
118 | }, { | |
119 | /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ | |
120 | NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, | |
121 | 0, FB_VMODE_NONINTERLACED | |
122 | }, { | |
123 | /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ | |
9d775e17 | 124 | NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, |
1da177e4 LT |
125 | 0, FB_VMODE_NONINTERLACED |
126 | }, { | |
127 | /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ | |
9d775e17 | 128 | NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, |
1da177e4 LT |
129 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
130 | }, { | |
131 | /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ | |
132 | NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, | |
133 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
134 | }, { | |
135 | /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ | |
136 | NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, | |
137 | 0, FB_VMODE_NONINTERLACED | |
138 | }, { | |
139 | /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ | |
140 | NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, | |
141 | 0, FB_VMODE_NONINTERLACED | |
142 | }, { | |
143 | /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ | |
144 | NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, | |
145 | 0, FB_VMODE_NONINTERLACED | |
146 | }, { | |
147 | /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ | |
148 | NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, | |
149 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
150 | }, { | |
151 | /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ | |
152 | NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, | |
153 | 0, FB_VMODE_NONINTERLACED | |
154 | }, { | |
155 | /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ | |
156 | NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, | |
157 | 0, FB_VMODE_NONINTERLACED | |
158 | }, { | |
159 | /* 1024x768 @ 100Hz, 80.21 kHz hsync */ | |
160 | NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, | |
161 | 0, FB_VMODE_NONINTERLACED | |
162 | }, { | |
163 | /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ | |
164 | NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, | |
165 | 0, FB_VMODE_NONINTERLACED | |
166 | }, { | |
167 | /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ | |
168 | NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, | |
169 | 0, FB_VMODE_NONINTERLACED | |
170 | }, { | |
171 | /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ | |
172 | NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, | |
173 | 0, FB_VMODE_NONINTERLACED | |
174 | }, { | |
175 | /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ | |
176 | NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, | |
177 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
178 | }, { | |
179 | /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ | |
180 | NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, | |
181 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
b0c87978 OH |
182 | }, { |
183 | /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ | |
184 | NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, | |
185 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
1da177e4 LT |
186 | }, { |
187 | /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ | |
188 | NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, | |
189 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
190 | }, { | |
191 | /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ | |
192 | NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, | |
193 | 0, FB_VMODE_NONINTERLACED | |
194 | }, { | |
195 | /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ | |
196 | NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, | |
197 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
198 | }, { | |
199 | /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ | |
200 | NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, | |
201 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
202 | }, { | |
203 | /* 512x384 @ 78 Hz, 31.50 kHz hsync */ | |
204 | NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, | |
205 | 0, FB_VMODE_NONINTERLACED | |
206 | }, { | |
207 | /* 512x384 @ 85 Hz, 34.38 kHz hsync */ | |
208 | NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, | |
209 | 0, FB_VMODE_NONINTERLACED | |
210 | }, { | |
211 | /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ | |
212 | NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, | |
213 | 0, FB_VMODE_DOUBLE | |
214 | }, { | |
215 | /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ | |
216 | NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, | |
217 | 0, FB_VMODE_DOUBLE | |
218 | }, { | |
219 | /* 320x240 @ 72 Hz, 36.5 kHz hsync */ | |
220 | NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, | |
221 | 0, FB_VMODE_DOUBLE | |
222 | }, { | |
223 | /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ | |
224 | NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, | |
225 | 0, FB_VMODE_DOUBLE | |
226 | }, { | |
227 | /* 400x300 @ 60 Hz, 37.8 kHz hsync */ | |
228 | NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, | |
229 | 0, FB_VMODE_DOUBLE | |
230 | }, { | |
231 | /* 400x300 @ 72 Hz, 48.0 kHz hsync */ | |
232 | NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, | |
233 | 0, FB_VMODE_DOUBLE | |
234 | }, { | |
235 | /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ | |
236 | NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, | |
237 | 0, FB_VMODE_DOUBLE | |
238 | }, { | |
239 | /* 480x300 @ 60 Hz, 37.8 kHz hsync */ | |
240 | NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, | |
241 | 0, FB_VMODE_DOUBLE | |
242 | }, { | |
243 | /* 480x300 @ 63 Hz, 39.6 kHz hsync */ | |
244 | NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, | |
245 | 0, FB_VMODE_DOUBLE | |
246 | }, { | |
247 | /* 480x300 @ 72 Hz, 48.0 kHz hsync */ | |
248 | NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, | |
249 | 0, FB_VMODE_DOUBLE | |
db6778db AD |
250 | }, { |
251 | /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ | |
252 | NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, | |
253 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
254 | FB_VMODE_NONINTERLACED | |
1dfcdfae MH |
255 | }, { |
256 | /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ | |
9d775e17 | 257 | NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, |
1dfcdfae | 258 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
f71689e4 DM |
259 | }, { |
260 | /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ | |
261 | NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, | |
262 | 0, FB_VMODE_NONINTERLACED | |
545c4423 A |
263 | }, { |
264 | /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ | |
265 | NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, | |
266 | 0, FB_VMODE_NONINTERLACED | |
27b7f2e3 PM |
267 | }, { |
268 | /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ | |
269 | NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, | |
270 | 0, FB_VMODE_INTERLACED | |
271 | }, { | |
272 | /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ | |
273 | NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, | |
274 | 0, FB_VMODE_INTERLACED | |
1da177e4 LT |
275 | }, |
276 | }; | |
277 | ||
278 | #ifdef CONFIG_FB_MODE_HELPERS | |
279 | const struct fb_videomode vesa_modes[] = { | |
280 | /* 0 640x350-85 VESA */ | |
281 | { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, | |
282 | FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, | |
283 | /* 1 640x400-85 VESA */ | |
284 | { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, | |
285 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
286 | /* 2 720x400-85 VESA */ | |
287 | { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, | |
288 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
289 | /* 3 640x480-60 VESA */ | |
290 | { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, | |
291 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
292 | /* 4 640x480-72 VESA */ | |
293 | { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, | |
294 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
295 | /* 5 640x480-75 VESA */ | |
296 | { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, | |
297 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
298 | /* 6 640x480-85 VESA */ | |
299 | { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, | |
300 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
301 | /* 7 800x600-56 VESA */ | |
302 | { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, | |
303 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
304 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
305 | /* 8 800x600-60 VESA */ | |
306 | { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, | |
307 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
308 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
309 | /* 9 800x600-72 VESA */ | |
310 | { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, | |
311 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
312 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
313 | /* 10 800x600-75 VESA */ | |
314 | { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, | |
315 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
316 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
317 | /* 11 800x600-85 VESA */ | |
318 | { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, | |
319 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
320 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
321 | /* 12 1024x768i-43 VESA */ | |
9d775e17 | 322 | { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, |
1da177e4 LT |
323 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
324 | FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, | |
325 | /* 13 1024x768-60 VESA */ | |
326 | { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, | |
327 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
328 | /* 14 1024x768-70 VESA */ | |
329 | { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, | |
330 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
331 | /* 15 1024x768-75 VESA */ | |
332 | { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, | |
333 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
334 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
335 | /* 16 1024x768-85 VESA */ | |
336 | { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, | |
337 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
338 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
339 | /* 17 1152x864-75 VESA */ | |
3efbb987 | 340 | { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, |
1da177e4 LT |
341 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
342 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
343 | /* 18 1280x960-60 VESA */ | |
344 | { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, | |
345 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
346 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
347 | /* 19 1280x960-85 VESA */ | |
348 | { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, | |
349 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
350 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
351 | /* 20 1280x1024-60 VESA */ | |
352 | { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, | |
353 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
354 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
355 | /* 21 1280x1024-75 VESA */ | |
356 | { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, | |
357 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
358 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
359 | /* 22 1280x1024-85 VESA */ | |
360 | { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, | |
361 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
362 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
363 | /* 23 1600x1200-60 VESA */ | |
364 | { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, | |
365 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
366 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
367 | /* 24 1600x1200-65 VESA */ | |
368 | { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, | |
369 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
370 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
371 | /* 25 1600x1200-70 VESA */ | |
372 | { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, | |
373 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
374 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
375 | /* 26 1600x1200-75 VESA */ | |
376 | { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, | |
377 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
378 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
379 | /* 27 1600x1200-85 VESA */ | |
380 | { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, | |
381 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
382 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
383 | /* 28 1792x1344-60 VESA */ | |
384 | { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, | |
385 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
386 | /* 29 1792x1344-75 VESA */ | |
387 | { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, | |
388 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
389 | /* 30 1856x1392-60 VESA */ | |
390 | { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, | |
391 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
392 | /* 31 1856x1392-75 VESA */ | |
393 | { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, | |
394 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
395 | /* 32 1920x1440-60 VESA */ | |
396 | { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, | |
397 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
398 | /* 33 1920x1440-75 VESA */ | |
9d775e17 | 399 | { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, |
1da177e4 LT |
400 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
401 | }; | |
402 | EXPORT_SYMBOL(vesa_modes); | |
403 | #endif /* CONFIG_FB_MODE_HELPERS */ | |
404 | ||
405 | static int my_atoi(const char *name) | |
406 | { | |
407 | int val = 0; | |
408 | ||
409 | for (;; name++) { | |
410 | switch (*name) { | |
88b229c7 | 411 | case '0' ... '9': |
1da177e4 LT |
412 | val = 10*val+(*name-'0'); |
413 | break; | |
414 | default: | |
415 | return val; | |
416 | } | |
417 | } | |
418 | } | |
419 | ||
420 | /** | |
421 | * fb_try_mode - test a video mode | |
422 | * @var: frame buffer user defined part of display | |
423 | * @info: frame buffer info structure | |
424 | * @mode: frame buffer video mode structure | |
425 | * @bpp: color depth in bits per pixel | |
426 | * | |
427 | * Tries a video mode to test it's validity for device @info. | |
428 | * | |
429 | * Returns 1 on success. | |
430 | * | |
431 | */ | |
432 | ||
433 | static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, | |
434 | const struct fb_videomode *mode, unsigned int bpp) | |
435 | { | |
436 | int err = 0; | |
437 | ||
438 | DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname", | |
439 | mode->xres, mode->yres, bpp, mode->refresh); | |
440 | var->xres = mode->xres; | |
441 | var->yres = mode->yres; | |
442 | var->xres_virtual = mode->xres; | |
443 | var->yres_virtual = mode->yres; | |
444 | var->xoffset = 0; | |
445 | var->yoffset = 0; | |
446 | var->bits_per_pixel = bpp; | |
447 | var->activate |= FB_ACTIVATE_TEST; | |
448 | var->pixclock = mode->pixclock; | |
449 | var->left_margin = mode->left_margin; | |
450 | var->right_margin = mode->right_margin; | |
451 | var->upper_margin = mode->upper_margin; | |
452 | var->lower_margin = mode->lower_margin; | |
453 | var->hsync_len = mode->hsync_len; | |
454 | var->vsync_len = mode->vsync_len; | |
455 | var->sync = mode->sync; | |
456 | var->vmode = mode->vmode; | |
457 | if (info->fbops->fb_check_var) | |
458 | err = info->fbops->fb_check_var(var, info); | |
459 | var->activate &= ~FB_ACTIVATE_TEST; | |
460 | return err; | |
461 | } | |
462 | ||
463 | /** | |
464 | * fb_find_mode - finds a valid video mode | |
465 | * @var: frame buffer user defined part of display | |
466 | * @info: frame buffer info structure | |
467 | * @mode_option: string video mode to find | |
468 | * @db: video mode database | |
469 | * @dbsize: size of @db | |
470 | * @default_mode: default video mode to fall back to | |
471 | * @default_bpp: default color depth in bits per pixel | |
472 | * | |
473 | * Finds a suitable video mode, starting with the specified mode | |
474 | * in @mode_option with fallback to @default_mode. If | |
475 | * @default_mode fails, all modes in the video mode database will | |
476 | * be tried. | |
477 | * | |
478 | * Valid mode specifiers for @mode_option: | |
479 | * | |
96fe6a21 | 480 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or |
1da177e4 LT |
481 | * <name>[-<bpp>][@<refresh>] |
482 | * | |
483 | * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and | |
484 | * <name> a string. | |
485 | * | |
96fe6a21 AD |
486 | * If 'M' is present after yres (and before refresh/bpp if present), |
487 | * the function will compute the timings using VESA(tm) Coordinated | |
488 | * Video Timings (CVT). If 'R' is present after 'M', will compute with | |
489 | * reduced blanking (for flatpanels). If 'i' is present, compute | |
490 | * interlaced mode. If 'm' is present, add margins equal to 1.8% | |
491 | * of xres rounded down to 8 pixels, and 1.8% of yres. The char | |
492 | * 'i' and 'm' must be after 'M' and 'R'. Example: | |
493 | * | |
494 | * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. | |
495 | * | |
1da177e4 LT |
496 | * NOTE: The passed struct @var is _not_ cleared! This allows you |
497 | * to supply values for e.g. the grayscale and accel_flags fields. | |
498 | * | |
499 | * Returns zero for failure, 1 if using specified @mode_option, | |
500 | * 2 if using specified @mode_option with an ignored refresh rate, | |
501 | * 3 if default mode is used, 4 if fall back to any valid mode. | |
502 | * | |
503 | */ | |
504 | ||
505 | int fb_find_mode(struct fb_var_screeninfo *var, | |
506 | struct fb_info *info, const char *mode_option, | |
507 | const struct fb_videomode *db, unsigned int dbsize, | |
508 | const struct fb_videomode *default_mode, | |
509 | unsigned int default_bpp) | |
510 | { | |
511 | int i; | |
512 | ||
513 | /* Set up defaults */ | |
514 | if (!db) { | |
515 | db = modedb; | |
d1ae418e | 516 | dbsize = ARRAY_SIZE(modedb); |
1da177e4 | 517 | } |
c25623f5 | 518 | |
1da177e4 | 519 | if (!default_mode) |
c25623f5 JC |
520 | default_mode = &db[0]; |
521 | ||
1da177e4 LT |
522 | if (!default_bpp) |
523 | default_bpp = 8; | |
524 | ||
525 | /* Did the user specify a video mode? */ | |
c40eea98 GU |
526 | if (!mode_option) |
527 | mode_option = fb_mode_option; | |
528 | if (mode_option) { | |
1da177e4 LT |
529 | const char *name = mode_option; |
530 | unsigned int namelen = strlen(name); | |
531 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
532 | unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; | |
96fe6a21 | 533 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; |
6b745b6f | 534 | u32 best, diff, tdiff; |
1da177e4 LT |
535 | |
536 | for (i = namelen-1; i >= 0; i--) { | |
537 | switch (name[i]) { | |
538 | case '@': | |
539 | namelen = i; | |
540 | if (!refresh_specified && !bpp_specified && | |
541 | !yres_specified) { | |
542 | refresh = my_atoi(&name[i+1]); | |
543 | refresh_specified = 1; | |
96fe6a21 AD |
544 | if (cvt || rb) |
545 | cvt = 0; | |
1da177e4 LT |
546 | } else |
547 | goto done; | |
548 | break; | |
549 | case '-': | |
550 | namelen = i; | |
551 | if (!bpp_specified && !yres_specified) { | |
552 | bpp = my_atoi(&name[i+1]); | |
553 | bpp_specified = 1; | |
96fe6a21 AD |
554 | if (cvt || rb) |
555 | cvt = 0; | |
1da177e4 LT |
556 | } else |
557 | goto done; | |
558 | break; | |
559 | case 'x': | |
560 | if (!yres_specified) { | |
561 | yres = my_atoi(&name[i+1]); | |
562 | yres_specified = 1; | |
563 | } else | |
564 | goto done; | |
565 | break; | |
88b229c7 | 566 | case '0' ... '9': |
1da177e4 | 567 | break; |
96fe6a21 AD |
568 | case 'M': |
569 | if (!yres_specified) | |
570 | cvt = 1; | |
571 | break; | |
572 | case 'R': | |
573 | if (!cvt) | |
574 | rb = 1; | |
575 | break; | |
576 | case 'm': | |
577 | if (!cvt) | |
578 | margins = 1; | |
579 | break; | |
580 | case 'i': | |
581 | if (!cvt) | |
582 | interlace = 1; | |
583 | break; | |
1da177e4 LT |
584 | default: |
585 | goto done; | |
586 | } | |
587 | } | |
588 | if (i < 0 && yres_specified) { | |
589 | xres = my_atoi(name); | |
590 | res_specified = 1; | |
591 | } | |
592 | done: | |
96fe6a21 AD |
593 | if (cvt) { |
594 | struct fb_videomode cvt_mode; | |
595 | int ret; | |
596 | ||
597 | DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, | |
598 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
599 | "", (margins) ? " with margins" : "", (interlace) ? | |
600 | " interlaced" : ""); | |
601 | ||
e2d4ecaf | 602 | memset(&cvt_mode, 0, sizeof(cvt_mode)); |
96fe6a21 AD |
603 | cvt_mode.xres = xres; |
604 | cvt_mode.yres = yres; | |
605 | cvt_mode.refresh = (refresh) ? refresh : 60; | |
606 | ||
607 | if (interlace) | |
608 | cvt_mode.vmode |= FB_VMODE_INTERLACED; | |
609 | else | |
610 | cvt_mode.vmode &= ~FB_VMODE_INTERLACED; | |
611 | ||
612 | ret = fb_find_mode_cvt(&cvt_mode, margins, rb); | |
613 | ||
614 | if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { | |
615 | DPRINTK("modedb CVT: CVT mode ok\n"); | |
616 | return 1; | |
617 | } | |
618 | ||
619 | DPRINTK("CVT mode invalid, getting mode from database\n"); | |
620 | } | |
621 | ||
1da177e4 LT |
622 | DPRINTK("Trying specified video mode%s %ix%i\n", |
623 | refresh_specified ? "" : " (ignoring refresh rate)", xres, yres); | |
624 | ||
1c5dd170 MJ |
625 | if (!refresh_specified) { |
626 | /* | |
627 | * If the caller has provided a custom mode database and a | |
628 | * valid monspecs structure, we look for the mode with the | |
629 | * highest refresh rate. Otherwise we play it safe it and | |
630 | * try to find a mode with a refresh rate closest to the | |
631 | * standard 60 Hz. | |
632 | */ | |
633 | if (db != modedb && | |
634 | info->monspecs.vfmin && info->monspecs.vfmax && | |
635 | info->monspecs.hfmin && info->monspecs.hfmax && | |
636 | info->monspecs.dclkmax) { | |
637 | refresh = 1000; | |
638 | } else { | |
639 | refresh = 60; | |
640 | } | |
641 | } | |
642 | ||
643 | diff = -1; | |
1da177e4 LT |
644 | best = -1; |
645 | for (i = 0; i < dbsize; i++) { | |
1c5dd170 MJ |
646 | if ((name_matches(db[i], name, namelen) || |
647 | (res_specified && res_matches(db[i], xres, yres))) && | |
648 | !fb_try_mode(var, info, &db[i], bpp)) { | |
649 | if (refresh_specified && db[i].refresh == refresh) { | |
650 | return 1; | |
651 | } else { | |
652 | if (abs(db[i].refresh - refresh) < diff) { | |
653 | diff = abs(db[i].refresh - refresh); | |
654 | best = i; | |
1da177e4 LT |
655 | } |
656 | } | |
657 | } | |
658 | } | |
659 | if (best != -1) { | |
660 | fb_try_mode(var, info, &db[best], bpp); | |
1c5dd170 | 661 | return (refresh_specified) ? 2 : 1; |
1da177e4 LT |
662 | } |
663 | ||
6b745b6f | 664 | diff = 2 * (xres + yres); |
1da177e4 LT |
665 | best = -1; |
666 | DPRINTK("Trying best-fit modes\n"); | |
667 | for (i = 0; i < dbsize; i++) { | |
1da177e4 LT |
668 | DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); |
669 | if (!fb_try_mode(var, info, &db[i], bpp)) { | |
6b745b6f MJ |
670 | tdiff = abs(db[i].xres - xres) + |
671 | abs(db[i].yres - yres); | |
672 | ||
673 | /* | |
674 | * Penalize modes with resolutions smaller | |
675 | * than requested. | |
676 | */ | |
677 | if (xres > db[i].xres || yres > db[i].yres) | |
678 | tdiff += xres + yres; | |
679 | ||
680 | if (diff > tdiff) { | |
681 | diff = tdiff; | |
682 | best = i; | |
683 | } | |
1da177e4 | 684 | } |
1da177e4 LT |
685 | } |
686 | if (best != -1) { | |
687 | fb_try_mode(var, info, &db[best], bpp); | |
688 | return 5; | |
689 | } | |
690 | } | |
691 | ||
692 | DPRINTK("Trying default video mode\n"); | |
693 | if (!fb_try_mode(var, info, default_mode, default_bpp)) | |
694 | return 3; | |
695 | ||
696 | DPRINTK("Trying all modes\n"); | |
697 | for (i = 0; i < dbsize; i++) | |
698 | if (!fb_try_mode(var, info, &db[i], default_bpp)) | |
699 | return 4; | |
700 | ||
701 | DPRINTK("No valid mode found\n"); | |
702 | return 0; | |
703 | } | |
704 | ||
705 | /** | |
706 | * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode | |
707 | * @mode: pointer to struct fb_videomode | |
708 | * @var: pointer to struct fb_var_screeninfo | |
709 | */ | |
710 | void fb_var_to_videomode(struct fb_videomode *mode, | |
9791d763 | 711 | const struct fb_var_screeninfo *var) |
1da177e4 LT |
712 | { |
713 | u32 pixclock, hfreq, htotal, vtotal; | |
714 | ||
715 | mode->name = NULL; | |
716 | mode->xres = var->xres; | |
717 | mode->yres = var->yres; | |
718 | mode->pixclock = var->pixclock; | |
719 | mode->hsync_len = var->hsync_len; | |
720 | mode->vsync_len = var->vsync_len; | |
721 | mode->left_margin = var->left_margin; | |
722 | mode->right_margin = var->right_margin; | |
723 | mode->upper_margin = var->upper_margin; | |
724 | mode->lower_margin = var->lower_margin; | |
725 | mode->sync = var->sync; | |
726 | mode->vmode = var->vmode & FB_VMODE_MASK; | |
727 | mode->flag = FB_MODE_IS_FROM_VAR; | |
8fb6567e MJ |
728 | mode->refresh = 0; |
729 | ||
1da177e4 LT |
730 | if (!var->pixclock) |
731 | return; | |
732 | ||
733 | pixclock = PICOS2KHZ(var->pixclock) * 1000; | |
734 | ||
735 | htotal = var->xres + var->right_margin + var->hsync_len + | |
736 | var->left_margin; | |
737 | vtotal = var->yres + var->lower_margin + var->vsync_len + | |
738 | var->upper_margin; | |
739 | ||
740 | if (var->vmode & FB_VMODE_INTERLACED) | |
741 | vtotal /= 2; | |
742 | if (var->vmode & FB_VMODE_DOUBLE) | |
743 | vtotal *= 2; | |
744 | ||
745 | hfreq = pixclock/htotal; | |
746 | mode->refresh = hfreq/vtotal; | |
747 | } | |
748 | ||
749 | /** | |
750 | * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo | |
751 | * @var: pointer to struct fb_var_screeninfo | |
752 | * @mode: pointer to struct fb_videomode | |
753 | */ | |
754 | void fb_videomode_to_var(struct fb_var_screeninfo *var, | |
9791d763 | 755 | const struct fb_videomode *mode) |
1da177e4 LT |
756 | { |
757 | var->xres = mode->xres; | |
758 | var->yres = mode->yres; | |
dcfe2666 GU |
759 | var->xres_virtual = mode->xres; |
760 | var->yres_virtual = mode->yres; | |
761 | var->xoffset = 0; | |
762 | var->yoffset = 0; | |
1da177e4 LT |
763 | var->pixclock = mode->pixclock; |
764 | var->left_margin = mode->left_margin; | |
1da177e4 LT |
765 | var->right_margin = mode->right_margin; |
766 | var->upper_margin = mode->upper_margin; | |
767 | var->lower_margin = mode->lower_margin; | |
dcfe2666 GU |
768 | var->hsync_len = mode->hsync_len; |
769 | var->vsync_len = mode->vsync_len; | |
1da177e4 LT |
770 | var->sync = mode->sync; |
771 | var->vmode = mode->vmode & FB_VMODE_MASK; | |
772 | } | |
773 | ||
774 | /** | |
775 | * fb_mode_is_equal - compare 2 videomodes | |
776 | * @mode1: first videomode | |
777 | * @mode2: second videomode | |
778 | * | |
779 | * RETURNS: | |
780 | * 1 if equal, 0 if not | |
781 | */ | |
9791d763 GU |
782 | int fb_mode_is_equal(const struct fb_videomode *mode1, |
783 | const struct fb_videomode *mode2) | |
1da177e4 LT |
784 | { |
785 | return (mode1->xres == mode2->xres && | |
786 | mode1->yres == mode2->yres && | |
787 | mode1->pixclock == mode2->pixclock && | |
788 | mode1->hsync_len == mode2->hsync_len && | |
789 | mode1->vsync_len == mode2->vsync_len && | |
790 | mode1->left_margin == mode2->left_margin && | |
791 | mode1->right_margin == mode2->right_margin && | |
792 | mode1->upper_margin == mode2->upper_margin && | |
793 | mode1->lower_margin == mode2->lower_margin && | |
794 | mode1->sync == mode2->sync && | |
795 | mode1->vmode == mode2->vmode); | |
796 | } | |
797 | ||
798 | /** | |
799 | * fb_find_best_mode - find best matching videomode | |
800 | * @var: pointer to struct fb_var_screeninfo | |
801 | * @head: pointer to struct list_head of modelist | |
802 | * | |
803 | * RETURNS: | |
804 | * struct fb_videomode, NULL if none found | |
805 | * | |
806 | * IMPORTANT: | |
807 | * This function assumes that all modelist entries in | |
808 | * info->modelist are valid. | |
809 | * | |
810 | * NOTES: | |
811 | * Finds best matching videomode which has an equal or greater dimension than | |
812 | * var->xres and var->yres. If more than 1 videomode is found, will return | |
813 | * the videomode with the highest refresh rate | |
814 | */ | |
9791d763 GU |
815 | const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, |
816 | struct list_head *head) | |
1da177e4 LT |
817 | { |
818 | struct list_head *pos; | |
819 | struct fb_modelist *modelist; | |
820 | struct fb_videomode *mode, *best = NULL; | |
821 | u32 diff = -1; | |
822 | ||
823 | list_for_each(pos, head) { | |
824 | u32 d; | |
825 | ||
826 | modelist = list_entry(pos, struct fb_modelist, list); | |
827 | mode = &modelist->mode; | |
828 | ||
829 | if (mode->xres >= var->xres && mode->yres >= var->yres) { | |
830 | d = (mode->xres - var->xres) + | |
831 | (mode->yres - var->yres); | |
832 | if (diff > d) { | |
833 | diff = d; | |
834 | best = mode; | |
17cc6281 AD |
835 | } else if (diff == d && best && |
836 | mode->refresh > best->refresh) | |
837 | best = mode; | |
1da177e4 LT |
838 | } |
839 | } | |
840 | return best; | |
841 | } | |
842 | ||
843 | /** | |
8fb6567e | 844 | * fb_find_nearest_mode - find closest videomode |
1da177e4 | 845 | * |
8fb6567e | 846 | * @mode: pointer to struct fb_videomode |
1da177e4 LT |
847 | * @head: pointer to modelist |
848 | * | |
849 | * Finds best matching videomode, smaller or greater in dimension. | |
850 | * If more than 1 videomode is found, will return the videomode with | |
8fb6567e | 851 | * the closest refresh rate. |
1da177e4 | 852 | */ |
9791d763 GU |
853 | const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, |
854 | struct list_head *head) | |
1da177e4 LT |
855 | { |
856 | struct list_head *pos; | |
857 | struct fb_modelist *modelist; | |
8fb6567e | 858 | struct fb_videomode *cmode, *best = NULL; |
1da177e4 LT |
859 | u32 diff = -1, diff_refresh = -1; |
860 | ||
861 | list_for_each(pos, head) { | |
862 | u32 d; | |
863 | ||
864 | modelist = list_entry(pos, struct fb_modelist, list); | |
8fb6567e | 865 | cmode = &modelist->mode; |
1da177e4 | 866 | |
8fb6567e MJ |
867 | d = abs(cmode->xres - mode->xres) + |
868 | abs(cmode->yres - mode->yres); | |
1da177e4 LT |
869 | if (diff > d) { |
870 | diff = d; | |
8fb6567e | 871 | best = cmode; |
1da177e4 | 872 | } else if (diff == d) { |
8fb6567e | 873 | d = abs(cmode->refresh - mode->refresh); |
1da177e4 LT |
874 | if (diff_refresh > d) { |
875 | diff_refresh = d; | |
8fb6567e | 876 | best = cmode; |
1da177e4 LT |
877 | } |
878 | } | |
879 | } | |
880 | ||
881 | return best; | |
882 | } | |
883 | ||
884 | /** | |
885 | * fb_match_mode - find a videomode which exactly matches the timings in var | |
886 | * @var: pointer to struct fb_var_screeninfo | |
887 | * @head: pointer to struct list_head of modelist | |
888 | * | |
889 | * RETURNS: | |
890 | * struct fb_videomode, NULL if none found | |
891 | */ | |
9791d763 GU |
892 | const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, |
893 | struct list_head *head) | |
1da177e4 LT |
894 | { |
895 | struct list_head *pos; | |
896 | struct fb_modelist *modelist; | |
897 | struct fb_videomode *m, mode; | |
898 | ||
899 | fb_var_to_videomode(&mode, var); | |
900 | list_for_each(pos, head) { | |
901 | modelist = list_entry(pos, struct fb_modelist, list); | |
902 | m = &modelist->mode; | |
903 | if (fb_mode_is_equal(m, &mode)) | |
904 | return m; | |
905 | } | |
906 | return NULL; | |
907 | } | |
908 | ||
909 | /** | |
910 | * fb_add_videomode: adds videomode entry to modelist | |
911 | * @mode: videomode to add | |
912 | * @head: struct list_head of modelist | |
913 | * | |
914 | * NOTES: | |
915 | * Will only add unmatched mode entries | |
916 | */ | |
9791d763 | 917 | int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) |
1da177e4 LT |
918 | { |
919 | struct list_head *pos; | |
920 | struct fb_modelist *modelist; | |
921 | struct fb_videomode *m; | |
922 | int found = 0; | |
923 | ||
924 | list_for_each(pos, head) { | |
925 | modelist = list_entry(pos, struct fb_modelist, list); | |
926 | m = &modelist->mode; | |
927 | if (fb_mode_is_equal(m, mode)) { | |
928 | found = 1; | |
929 | break; | |
930 | } | |
931 | } | |
932 | if (!found) { | |
933 | modelist = kmalloc(sizeof(struct fb_modelist), | |
934 | GFP_KERNEL); | |
935 | ||
936 | if (!modelist) | |
937 | return -ENOMEM; | |
938 | modelist->mode = *mode; | |
939 | list_add(&modelist->list, head); | |
940 | } | |
941 | return 0; | |
942 | } | |
943 | ||
944 | /** | |
945 | * fb_delete_videomode: removed videomode entry from modelist | |
946 | * @mode: videomode to remove | |
947 | * @head: struct list_head of modelist | |
948 | * | |
949 | * NOTES: | |
950 | * Will remove all matching mode entries | |
951 | */ | |
9791d763 GU |
952 | void fb_delete_videomode(const struct fb_videomode *mode, |
953 | struct list_head *head) | |
1da177e4 LT |
954 | { |
955 | struct list_head *pos, *n; | |
956 | struct fb_modelist *modelist; | |
957 | struct fb_videomode *m; | |
958 | ||
959 | list_for_each_safe(pos, n, head) { | |
960 | modelist = list_entry(pos, struct fb_modelist, list); | |
961 | m = &modelist->mode; | |
962 | if (fb_mode_is_equal(m, mode)) { | |
963 | list_del(pos); | |
964 | kfree(pos); | |
965 | } | |
966 | } | |
967 | } | |
968 | ||
969 | /** | |
970 | * fb_destroy_modelist: destroy modelist | |
971 | * @head: struct list_head of modelist | |
972 | */ | |
973 | void fb_destroy_modelist(struct list_head *head) | |
974 | { | |
975 | struct list_head *pos, *n; | |
976 | ||
977 | list_for_each_safe(pos, n, head) { | |
978 | list_del(pos); | |
979 | kfree(pos); | |
980 | } | |
981 | } | |
9953d236 | 982 | EXPORT_SYMBOL_GPL(fb_destroy_modelist); |
1da177e4 LT |
983 | |
984 | /** | |
985 | * fb_videomode_to_modelist: convert mode array to mode list | |
986 | * @modedb: array of struct fb_videomode | |
987 | * @num: number of entries in array | |
988 | * @head: struct list_head of modelist | |
989 | */ | |
9791d763 | 990 | void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, |
1da177e4 LT |
991 | struct list_head *head) |
992 | { | |
993 | int i; | |
994 | ||
995 | INIT_LIST_HEAD(head); | |
996 | ||
997 | for (i = 0; i < num; i++) { | |
998 | if (fb_add_videomode(&modedb[i], head)) | |
999 | return; | |
1000 | } | |
1001 | } | |
1002 | ||
9791d763 GU |
1003 | const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, |
1004 | struct list_head *head) | |
003cfc0c AD |
1005 | { |
1006 | struct list_head *pos; | |
1007 | struct fb_modelist *modelist; | |
9791d763 | 1008 | const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; |
003cfc0c AD |
1009 | int first = 0; |
1010 | ||
1011 | if (!head->prev || !head->next || list_empty(head)) | |
1012 | goto finished; | |
1013 | ||
1014 | /* get the first detailed mode and the very first mode */ | |
1015 | list_for_each(pos, head) { | |
1016 | modelist = list_entry(pos, struct fb_modelist, list); | |
1017 | m = &modelist->mode; | |
1018 | ||
1019 | if (!first) { | |
1020 | m1 = m; | |
1021 | first = 1; | |
1022 | } | |
1023 | ||
1024 | if (m->flag & FB_MODE_IS_FIRST) { | |
1025 | md = m; | |
1026 | break; | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | /* first detailed timing is preferred */ | |
1031 | if (specs->misc & FB_MISC_1ST_DETAIL) { | |
1032 | best = md; | |
1033 | goto finished; | |
1034 | } | |
1035 | ||
1036 | /* find best mode based on display width and height */ | |
1037 | if (specs->max_x && specs->max_y) { | |
1038 | struct fb_var_screeninfo var; | |
1039 | ||
1040 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); | |
1041 | var.xres = (specs->max_x * 7200)/254; | |
1042 | var.yres = (specs->max_y * 7200)/254; | |
1043 | m = fb_find_best_mode(&var, head); | |
1044 | if (m) { | |
1045 | best = m; | |
1046 | goto finished; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | /* use first detailed mode */ | |
1051 | if (md) { | |
1052 | best = md; | |
1053 | goto finished; | |
1054 | } | |
1055 | ||
1056 | /* last resort, use the very first mode */ | |
1057 | best = m1; | |
1058 | finished: | |
1059 | return best; | |
1060 | } | |
1061 | EXPORT_SYMBOL(fb_find_best_display); | |
1062 | ||
1da177e4 LT |
1063 | EXPORT_SYMBOL(fb_videomode_to_var); |
1064 | EXPORT_SYMBOL(fb_var_to_videomode); | |
1065 | EXPORT_SYMBOL(fb_mode_is_equal); | |
1066 | EXPORT_SYMBOL(fb_add_videomode); | |
1da177e4 LT |
1067 | EXPORT_SYMBOL(fb_match_mode); |
1068 | EXPORT_SYMBOL(fb_find_best_mode); | |
1069 | EXPORT_SYMBOL(fb_find_nearest_mode); | |
1070 | EXPORT_SYMBOL(fb_videomode_to_modelist); | |
1071 | EXPORT_SYMBOL(fb_find_mode); |