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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 | |
25 | #define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __FUNCTION__ , ## args) | |
26 | #else | |
27 | #define DPRINTK(fmt, args...) | |
28 | #endif | |
29 | ||
30 | const char *global_mode_option; | |
31 | ||
32 | /* | |
33 | * Standard video mode definitions (taken from XFree86) | |
34 | */ | |
35 | ||
1da177e4 LT |
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, | |
40 | 0, FB_VMODE_NONINTERLACED | |
41 | }, { | |
42 | /* 640x480 @ 60 Hz, 31.5 kHz hsync */ | |
43 | NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, | |
44 | 0, FB_VMODE_NONINTERLACED | |
45 | }, { | |
46 | /* 800x600 @ 56 Hz, 35.15 kHz hsync */ | |
47 | NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, | |
48 | 0, 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, | |
52 | 0, 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, | |
60 | 0, FB_VMODE_NONINTERLACED | |
61 | }, { | |
62 | /* 640x480 @ 75 Hz, 37.50 kHz hsync */ | |
63 | NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, | |
64 | 0, 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, FB_VMODE_NONINTERLACED | |
69 | }, { | |
70 | /* 640x480 @ 85 Hz, 43.27 kHz hsync */ | |
71 | NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, | |
72 | 0, FB_VMODE_NONINTERLACED | |
73 | }, { | |
74 | /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ | |
75 | NULL, 69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, | |
76 | 0, FB_VMODE_INTERLACED | |
77 | }, { | |
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, FB_VMODE_NONINTERLACED | |
81 | }, { | |
82 | /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ | |
83 | NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, | |
84 | 0, FB_VMODE_NONINTERLACED | |
85 | }, { | |
86 | /* 640x480 @ 100 Hz, 53.01 kHz hsync */ | |
87 | NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, | |
88 | 0, FB_VMODE_NONINTERLACED | |
89 | }, { | |
90 | /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ | |
91 | NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, | |
92 | 0, FB_VMODE_NONINTERLACED | |
93 | }, { | |
94 | /* 800x600 @ 85 Hz, 55.84 kHz hsync */ | |
95 | NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, | |
96 | 0, FB_VMODE_NONINTERLACED | |
97 | }, { | |
98 | /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ | |
99 | NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, | |
100 | 0, FB_VMODE_NONINTERLACED | |
101 | }, { | |
102 | /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ | |
103 | NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, | |
104 | 0, FB_VMODE_INTERLACED | |
105 | }, { | |
106 | /* 800x600 @ 100 Hz, 64.02 kHz hsync */ | |
107 | NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, | |
108 | 0, FB_VMODE_NONINTERLACED | |
109 | }, { | |
110 | /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ | |
111 | NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, | |
112 | 0, FB_VMODE_NONINTERLACED | |
113 | }, { | |
114 | /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ | |
115 | NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, | |
116 | 0, FB_VMODE_NONINTERLACED | |
117 | }, { | |
118 | /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ | |
119 | NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, | |
120 | 0, FB_VMODE_NONINTERLACED | |
121 | }, { | |
122 | /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ | |
123 | NULL, 68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, | |
124 | 0, FB_VMODE_NONINTERLACED | |
125 | }, { | |
126 | /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ | |
127 | NULL, 75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3, | |
128 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
129 | }, { | |
130 | /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ | |
131 | NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, | |
132 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
133 | }, { | |
134 | /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ | |
135 | NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, | |
136 | 0, FB_VMODE_NONINTERLACED | |
137 | }, { | |
138 | /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ | |
139 | NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, | |
140 | 0, FB_VMODE_NONINTERLACED | |
141 | }, { | |
142 | /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ | |
143 | NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, | |
144 | 0, FB_VMODE_NONINTERLACED | |
145 | }, { | |
146 | /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ | |
147 | NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, | |
148 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
149 | }, { | |
150 | /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ | |
151 | NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, | |
152 | 0, FB_VMODE_NONINTERLACED | |
153 | }, { | |
154 | /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ | |
155 | NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, | |
156 | 0, FB_VMODE_NONINTERLACED | |
157 | }, { | |
158 | /* 1024x768 @ 100Hz, 80.21 kHz hsync */ | |
159 | NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, | |
160 | 0, FB_VMODE_NONINTERLACED | |
161 | }, { | |
162 | /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ | |
163 | NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, | |
164 | 0, FB_VMODE_NONINTERLACED | |
165 | }, { | |
166 | /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ | |
167 | NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, | |
168 | 0, FB_VMODE_NONINTERLACED | |
169 | }, { | |
170 | /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ | |
171 | NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, | |
172 | 0, FB_VMODE_NONINTERLACED | |
173 | }, { | |
174 | /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ | |
175 | NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, | |
176 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
177 | }, { | |
178 | /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ | |
179 | NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, | |
180 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
b0c87978 OH |
181 | }, { |
182 | /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ | |
183 | NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, | |
184 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
1da177e4 LT |
185 | }, { |
186 | /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ | |
187 | NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, | |
188 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
189 | }, { | |
190 | /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ | |
191 | NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, | |
192 | 0, FB_VMODE_NONINTERLACED | |
193 | }, { | |
194 | /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ | |
195 | NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, | |
196 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
197 | }, { | |
198 | /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ | |
199 | NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, | |
200 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
201 | }, { | |
202 | /* 512x384 @ 78 Hz, 31.50 kHz hsync */ | |
203 | NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, | |
204 | 0, FB_VMODE_NONINTERLACED | |
205 | }, { | |
206 | /* 512x384 @ 85 Hz, 34.38 kHz hsync */ | |
207 | NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, | |
208 | 0, FB_VMODE_NONINTERLACED | |
209 | }, { | |
210 | /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ | |
211 | NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, | |
212 | 0, FB_VMODE_DOUBLE | |
213 | }, { | |
214 | /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ | |
215 | NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, | |
216 | 0, FB_VMODE_DOUBLE | |
217 | }, { | |
218 | /* 320x240 @ 72 Hz, 36.5 kHz hsync */ | |
219 | NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, | |
220 | 0, FB_VMODE_DOUBLE | |
221 | }, { | |
222 | /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ | |
223 | NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, | |
224 | 0, FB_VMODE_DOUBLE | |
225 | }, { | |
226 | /* 400x300 @ 60 Hz, 37.8 kHz hsync */ | |
227 | NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, | |
228 | 0, FB_VMODE_DOUBLE | |
229 | }, { | |
230 | /* 400x300 @ 72 Hz, 48.0 kHz hsync */ | |
231 | NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, | |
232 | 0, FB_VMODE_DOUBLE | |
233 | }, { | |
234 | /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ | |
235 | NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, | |
236 | 0, FB_VMODE_DOUBLE | |
237 | }, { | |
238 | /* 480x300 @ 60 Hz, 37.8 kHz hsync */ | |
239 | NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, | |
240 | 0, FB_VMODE_DOUBLE | |
241 | }, { | |
242 | /* 480x300 @ 63 Hz, 39.6 kHz hsync */ | |
243 | NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, | |
244 | 0, FB_VMODE_DOUBLE | |
245 | }, { | |
246 | /* 480x300 @ 72 Hz, 48.0 kHz hsync */ | |
247 | NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, | |
248 | 0, FB_VMODE_DOUBLE | |
db6778db AD |
249 | }, { |
250 | /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ | |
251 | NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, | |
252 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
253 | FB_VMODE_NONINTERLACED | |
1dfcdfae MH |
254 | }, { |
255 | /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ | |
256 | NULL, 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6, | |
257 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED | |
f71689e4 DM |
258 | }, { |
259 | /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ | |
260 | NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, | |
261 | 0, FB_VMODE_NONINTERLACED | |
1da177e4 LT |
262 | }, |
263 | }; | |
264 | ||
265 | #ifdef CONFIG_FB_MODE_HELPERS | |
266 | const struct fb_videomode vesa_modes[] = { | |
267 | /* 0 640x350-85 VESA */ | |
268 | { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, | |
269 | FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, | |
270 | /* 1 640x400-85 VESA */ | |
271 | { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, | |
272 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
273 | /* 2 720x400-85 VESA */ | |
274 | { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, | |
275 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
276 | /* 3 640x480-60 VESA */ | |
277 | { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, | |
278 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
279 | /* 4 640x480-72 VESA */ | |
280 | { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, | |
281 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
282 | /* 5 640x480-75 VESA */ | |
283 | { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, | |
284 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
285 | /* 6 640x480-85 VESA */ | |
286 | { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, | |
287 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
288 | /* 7 800x600-56 VESA */ | |
289 | { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, | |
290 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
291 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
292 | /* 8 800x600-60 VESA */ | |
293 | { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, | |
294 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
295 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
296 | /* 9 800x600-72 VESA */ | |
297 | { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, | |
298 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
299 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
300 | /* 10 800x600-75 VESA */ | |
301 | { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, | |
302 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
303 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
304 | /* 11 800x600-85 VESA */ | |
305 | { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, | |
306 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
307 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
308 | /* 12 1024x768i-43 VESA */ | |
309 | { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, | |
310 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
311 | FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, | |
312 | /* 13 1024x768-60 VESA */ | |
313 | { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, | |
314 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
315 | /* 14 1024x768-70 VESA */ | |
316 | { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, | |
317 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
318 | /* 15 1024x768-75 VESA */ | |
319 | { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, | |
320 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
321 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
322 | /* 16 1024x768-85 VESA */ | |
323 | { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, | |
324 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
325 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
326 | /* 17 1152x864-75 VESA */ | |
327 | { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3, | |
328 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
329 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
330 | /* 18 1280x960-60 VESA */ | |
331 | { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, | |
332 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
333 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
334 | /* 19 1280x960-85 VESA */ | |
335 | { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, | |
336 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
337 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
338 | /* 20 1280x1024-60 VESA */ | |
339 | { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, | |
340 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
341 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
342 | /* 21 1280x1024-75 VESA */ | |
343 | { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, | |
344 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
345 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
346 | /* 22 1280x1024-85 VESA */ | |
347 | { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, | |
348 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
349 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
350 | /* 23 1600x1200-60 VESA */ | |
351 | { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, | |
352 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
353 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
354 | /* 24 1600x1200-65 VESA */ | |
355 | { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, | |
356 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
357 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
358 | /* 25 1600x1200-70 VESA */ | |
359 | { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, | |
360 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
361 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
362 | /* 26 1600x1200-75 VESA */ | |
363 | { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, | |
364 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
365 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
366 | /* 27 1600x1200-85 VESA */ | |
367 | { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, | |
368 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
369 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
370 | /* 28 1792x1344-60 VESA */ | |
371 | { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, | |
372 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
373 | /* 29 1792x1344-75 VESA */ | |
374 | { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, | |
375 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
376 | /* 30 1856x1392-60 VESA */ | |
377 | { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, | |
378 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
379 | /* 31 1856x1392-75 VESA */ | |
380 | { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, | |
381 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
382 | /* 32 1920x1440-60 VESA */ | |
383 | { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, | |
384 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
385 | /* 33 1920x1440-75 VESA */ | |
386 | { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, | |
387 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
388 | }; | |
389 | EXPORT_SYMBOL(vesa_modes); | |
390 | #endif /* CONFIG_FB_MODE_HELPERS */ | |
391 | ||
392 | static int my_atoi(const char *name) | |
393 | { | |
394 | int val = 0; | |
395 | ||
396 | for (;; name++) { | |
397 | switch (*name) { | |
398 | case '0'...'9': | |
399 | val = 10*val+(*name-'0'); | |
400 | break; | |
401 | default: | |
402 | return val; | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | /** | |
408 | * fb_try_mode - test a video mode | |
409 | * @var: frame buffer user defined part of display | |
410 | * @info: frame buffer info structure | |
411 | * @mode: frame buffer video mode structure | |
412 | * @bpp: color depth in bits per pixel | |
413 | * | |
414 | * Tries a video mode to test it's validity for device @info. | |
415 | * | |
416 | * Returns 1 on success. | |
417 | * | |
418 | */ | |
419 | ||
420 | static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, | |
421 | const struct fb_videomode *mode, unsigned int bpp) | |
422 | { | |
423 | int err = 0; | |
424 | ||
425 | DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname", | |
426 | mode->xres, mode->yres, bpp, mode->refresh); | |
427 | var->xres = mode->xres; | |
428 | var->yres = mode->yres; | |
429 | var->xres_virtual = mode->xres; | |
430 | var->yres_virtual = mode->yres; | |
431 | var->xoffset = 0; | |
432 | var->yoffset = 0; | |
433 | var->bits_per_pixel = bpp; | |
434 | var->activate |= FB_ACTIVATE_TEST; | |
435 | var->pixclock = mode->pixclock; | |
436 | var->left_margin = mode->left_margin; | |
437 | var->right_margin = mode->right_margin; | |
438 | var->upper_margin = mode->upper_margin; | |
439 | var->lower_margin = mode->lower_margin; | |
440 | var->hsync_len = mode->hsync_len; | |
441 | var->vsync_len = mode->vsync_len; | |
442 | var->sync = mode->sync; | |
443 | var->vmode = mode->vmode; | |
444 | if (info->fbops->fb_check_var) | |
445 | err = info->fbops->fb_check_var(var, info); | |
446 | var->activate &= ~FB_ACTIVATE_TEST; | |
447 | return err; | |
448 | } | |
449 | ||
450 | /** | |
451 | * fb_find_mode - finds a valid video mode | |
452 | * @var: frame buffer user defined part of display | |
453 | * @info: frame buffer info structure | |
454 | * @mode_option: string video mode to find | |
455 | * @db: video mode database | |
456 | * @dbsize: size of @db | |
457 | * @default_mode: default video mode to fall back to | |
458 | * @default_bpp: default color depth in bits per pixel | |
459 | * | |
460 | * Finds a suitable video mode, starting with the specified mode | |
461 | * in @mode_option with fallback to @default_mode. If | |
462 | * @default_mode fails, all modes in the video mode database will | |
463 | * be tried. | |
464 | * | |
465 | * Valid mode specifiers for @mode_option: | |
466 | * | |
96fe6a21 | 467 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or |
1da177e4 LT |
468 | * <name>[-<bpp>][@<refresh>] |
469 | * | |
470 | * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and | |
471 | * <name> a string. | |
472 | * | |
96fe6a21 AD |
473 | * If 'M' is present after yres (and before refresh/bpp if present), |
474 | * the function will compute the timings using VESA(tm) Coordinated | |
475 | * Video Timings (CVT). If 'R' is present after 'M', will compute with | |
476 | * reduced blanking (for flatpanels). If 'i' is present, compute | |
477 | * interlaced mode. If 'm' is present, add margins equal to 1.8% | |
478 | * of xres rounded down to 8 pixels, and 1.8% of yres. The char | |
479 | * 'i' and 'm' must be after 'M' and 'R'. Example: | |
480 | * | |
481 | * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. | |
482 | * | |
1da177e4 LT |
483 | * NOTE: The passed struct @var is _not_ cleared! This allows you |
484 | * to supply values for e.g. the grayscale and accel_flags fields. | |
485 | * | |
486 | * Returns zero for failure, 1 if using specified @mode_option, | |
487 | * 2 if using specified @mode_option with an ignored refresh rate, | |
488 | * 3 if default mode is used, 4 if fall back to any valid mode. | |
489 | * | |
490 | */ | |
491 | ||
492 | int fb_find_mode(struct fb_var_screeninfo *var, | |
493 | struct fb_info *info, const char *mode_option, | |
494 | const struct fb_videomode *db, unsigned int dbsize, | |
495 | const struct fb_videomode *default_mode, | |
496 | unsigned int default_bpp) | |
497 | { | |
498 | int i; | |
499 | ||
500 | /* Set up defaults */ | |
501 | if (!db) { | |
502 | db = modedb; | |
d1ae418e | 503 | dbsize = ARRAY_SIZE(modedb); |
1da177e4 | 504 | } |
c25623f5 | 505 | |
1da177e4 | 506 | if (!default_mode) |
c25623f5 JC |
507 | default_mode = &db[0]; |
508 | ||
1da177e4 LT |
509 | if (!default_bpp) |
510 | default_bpp = 8; | |
511 | ||
512 | /* Did the user specify a video mode? */ | |
513 | if (mode_option || (mode_option = global_mode_option)) { | |
514 | const char *name = mode_option; | |
515 | unsigned int namelen = strlen(name); | |
516 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
517 | unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; | |
96fe6a21 | 518 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; |
1da177e4 LT |
519 | u32 best, diff; |
520 | ||
521 | for (i = namelen-1; i >= 0; i--) { | |
522 | switch (name[i]) { | |
523 | case '@': | |
524 | namelen = i; | |
525 | if (!refresh_specified && !bpp_specified && | |
526 | !yres_specified) { | |
527 | refresh = my_atoi(&name[i+1]); | |
528 | refresh_specified = 1; | |
96fe6a21 AD |
529 | if (cvt || rb) |
530 | cvt = 0; | |
1da177e4 LT |
531 | } else |
532 | goto done; | |
533 | break; | |
534 | case '-': | |
535 | namelen = i; | |
536 | if (!bpp_specified && !yres_specified) { | |
537 | bpp = my_atoi(&name[i+1]); | |
538 | bpp_specified = 1; | |
96fe6a21 AD |
539 | if (cvt || rb) |
540 | cvt = 0; | |
1da177e4 LT |
541 | } else |
542 | goto done; | |
543 | break; | |
544 | case 'x': | |
545 | if (!yres_specified) { | |
546 | yres = my_atoi(&name[i+1]); | |
547 | yres_specified = 1; | |
548 | } else | |
549 | goto done; | |
550 | break; | |
551 | case '0'...'9': | |
552 | break; | |
96fe6a21 AD |
553 | case 'M': |
554 | if (!yres_specified) | |
555 | cvt = 1; | |
556 | break; | |
557 | case 'R': | |
558 | if (!cvt) | |
559 | rb = 1; | |
560 | break; | |
561 | case 'm': | |
562 | if (!cvt) | |
563 | margins = 1; | |
564 | break; | |
565 | case 'i': | |
566 | if (!cvt) | |
567 | interlace = 1; | |
568 | break; | |
1da177e4 LT |
569 | default: |
570 | goto done; | |
571 | } | |
572 | } | |
573 | if (i < 0 && yres_specified) { | |
574 | xres = my_atoi(name); | |
575 | res_specified = 1; | |
576 | } | |
577 | done: | |
96fe6a21 AD |
578 | if (cvt) { |
579 | struct fb_videomode cvt_mode; | |
580 | int ret; | |
581 | ||
582 | DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, | |
583 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
584 | "", (margins) ? " with margins" : "", (interlace) ? | |
585 | " interlaced" : ""); | |
586 | ||
587 | cvt_mode.xres = xres; | |
588 | cvt_mode.yres = yres; | |
589 | cvt_mode.refresh = (refresh) ? refresh : 60; | |
590 | ||
591 | if (interlace) | |
592 | cvt_mode.vmode |= FB_VMODE_INTERLACED; | |
593 | else | |
594 | cvt_mode.vmode &= ~FB_VMODE_INTERLACED; | |
595 | ||
596 | ret = fb_find_mode_cvt(&cvt_mode, margins, rb); | |
597 | ||
598 | if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { | |
599 | DPRINTK("modedb CVT: CVT mode ok\n"); | |
600 | return 1; | |
601 | } | |
602 | ||
603 | DPRINTK("CVT mode invalid, getting mode from database\n"); | |
604 | } | |
605 | ||
1da177e4 LT |
606 | DPRINTK("Trying specified video mode%s %ix%i\n", |
607 | refresh_specified ? "" : " (ignoring refresh rate)", xres, yres); | |
608 | ||
609 | diff = refresh; | |
610 | best = -1; | |
611 | for (i = 0; i < dbsize; i++) { | |
5c52cbeb GU |
612 | if (name_matches(db[i], name, namelen) || |
613 | (res_specified && res_matches(db[i], xres, yres))) { | |
1da177e4 LT |
614 | if(!fb_try_mode(var, info, &db[i], bpp)) { |
615 | if(!refresh_specified || db[i].refresh == refresh) | |
616 | return 1; | |
617 | else { | |
618 | if(diff > abs(db[i].refresh - refresh)) { | |
619 | diff = abs(db[i].refresh - refresh); | |
620 | best = i; | |
621 | } | |
622 | } | |
623 | } | |
624 | } | |
625 | } | |
626 | if (best != -1) { | |
627 | fb_try_mode(var, info, &db[best], bpp); | |
628 | return 2; | |
629 | } | |
630 | ||
631 | diff = xres + yres; | |
632 | best = -1; | |
633 | DPRINTK("Trying best-fit modes\n"); | |
634 | for (i = 0; i < dbsize; i++) { | |
635 | if (xres <= db[i].xres && yres <= db[i].yres) { | |
636 | DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); | |
637 | if (!fb_try_mode(var, info, &db[i], bpp)) { | |
638 | if (diff > (db[i].xres - xres) + (db[i].yres - yres)) { | |
639 | diff = (db[i].xres - xres) + (db[i].yres - yres); | |
640 | best = i; | |
641 | } | |
642 | } | |
643 | } | |
644 | } | |
645 | if (best != -1) { | |
646 | fb_try_mode(var, info, &db[best], bpp); | |
647 | return 5; | |
648 | } | |
649 | } | |
650 | ||
651 | DPRINTK("Trying default video mode\n"); | |
652 | if (!fb_try_mode(var, info, default_mode, default_bpp)) | |
653 | return 3; | |
654 | ||
655 | DPRINTK("Trying all modes\n"); | |
656 | for (i = 0; i < dbsize; i++) | |
657 | if (!fb_try_mode(var, info, &db[i], default_bpp)) | |
658 | return 4; | |
659 | ||
660 | DPRINTK("No valid mode found\n"); | |
661 | return 0; | |
662 | } | |
663 | ||
664 | /** | |
665 | * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode | |
666 | * @mode: pointer to struct fb_videomode | |
667 | * @var: pointer to struct fb_var_screeninfo | |
668 | */ | |
669 | void fb_var_to_videomode(struct fb_videomode *mode, | |
9791d763 | 670 | const struct fb_var_screeninfo *var) |
1da177e4 LT |
671 | { |
672 | u32 pixclock, hfreq, htotal, vtotal; | |
673 | ||
674 | mode->name = NULL; | |
675 | mode->xres = var->xres; | |
676 | mode->yres = var->yres; | |
677 | mode->pixclock = var->pixclock; | |
678 | mode->hsync_len = var->hsync_len; | |
679 | mode->vsync_len = var->vsync_len; | |
680 | mode->left_margin = var->left_margin; | |
681 | mode->right_margin = var->right_margin; | |
682 | mode->upper_margin = var->upper_margin; | |
683 | mode->lower_margin = var->lower_margin; | |
684 | mode->sync = var->sync; | |
685 | mode->vmode = var->vmode & FB_VMODE_MASK; | |
686 | mode->flag = FB_MODE_IS_FROM_VAR; | |
8fb6567e MJ |
687 | mode->refresh = 0; |
688 | ||
1da177e4 LT |
689 | if (!var->pixclock) |
690 | return; | |
691 | ||
692 | pixclock = PICOS2KHZ(var->pixclock) * 1000; | |
693 | ||
694 | htotal = var->xres + var->right_margin + var->hsync_len + | |
695 | var->left_margin; | |
696 | vtotal = var->yres + var->lower_margin + var->vsync_len + | |
697 | var->upper_margin; | |
698 | ||
699 | if (var->vmode & FB_VMODE_INTERLACED) | |
700 | vtotal /= 2; | |
701 | if (var->vmode & FB_VMODE_DOUBLE) | |
702 | vtotal *= 2; | |
703 | ||
704 | hfreq = pixclock/htotal; | |
705 | mode->refresh = hfreq/vtotal; | |
706 | } | |
707 | ||
708 | /** | |
709 | * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo | |
710 | * @var: pointer to struct fb_var_screeninfo | |
711 | * @mode: pointer to struct fb_videomode | |
712 | */ | |
713 | void fb_videomode_to_var(struct fb_var_screeninfo *var, | |
9791d763 | 714 | const struct fb_videomode *mode) |
1da177e4 LT |
715 | { |
716 | var->xres = mode->xres; | |
717 | var->yres = mode->yres; | |
dcfe2666 GU |
718 | var->xres_virtual = mode->xres; |
719 | var->yres_virtual = mode->yres; | |
720 | var->xoffset = 0; | |
721 | var->yoffset = 0; | |
1da177e4 LT |
722 | var->pixclock = mode->pixclock; |
723 | var->left_margin = mode->left_margin; | |
1da177e4 LT |
724 | var->right_margin = mode->right_margin; |
725 | var->upper_margin = mode->upper_margin; | |
726 | var->lower_margin = mode->lower_margin; | |
dcfe2666 GU |
727 | var->hsync_len = mode->hsync_len; |
728 | var->vsync_len = mode->vsync_len; | |
1da177e4 LT |
729 | var->sync = mode->sync; |
730 | var->vmode = mode->vmode & FB_VMODE_MASK; | |
731 | } | |
732 | ||
733 | /** | |
734 | * fb_mode_is_equal - compare 2 videomodes | |
735 | * @mode1: first videomode | |
736 | * @mode2: second videomode | |
737 | * | |
738 | * RETURNS: | |
739 | * 1 if equal, 0 if not | |
740 | */ | |
9791d763 GU |
741 | int fb_mode_is_equal(const struct fb_videomode *mode1, |
742 | const struct fb_videomode *mode2) | |
1da177e4 LT |
743 | { |
744 | return (mode1->xres == mode2->xres && | |
745 | mode1->yres == mode2->yres && | |
746 | mode1->pixclock == mode2->pixclock && | |
747 | mode1->hsync_len == mode2->hsync_len && | |
748 | mode1->vsync_len == mode2->vsync_len && | |
749 | mode1->left_margin == mode2->left_margin && | |
750 | mode1->right_margin == mode2->right_margin && | |
751 | mode1->upper_margin == mode2->upper_margin && | |
752 | mode1->lower_margin == mode2->lower_margin && | |
753 | mode1->sync == mode2->sync && | |
754 | mode1->vmode == mode2->vmode); | |
755 | } | |
756 | ||
757 | /** | |
758 | * fb_find_best_mode - find best matching videomode | |
759 | * @var: pointer to struct fb_var_screeninfo | |
760 | * @head: pointer to struct list_head of modelist | |
761 | * | |
762 | * RETURNS: | |
763 | * struct fb_videomode, NULL if none found | |
764 | * | |
765 | * IMPORTANT: | |
766 | * This function assumes that all modelist entries in | |
767 | * info->modelist are valid. | |
768 | * | |
769 | * NOTES: | |
770 | * Finds best matching videomode which has an equal or greater dimension than | |
771 | * var->xres and var->yres. If more than 1 videomode is found, will return | |
772 | * the videomode with the highest refresh rate | |
773 | */ | |
9791d763 GU |
774 | const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, |
775 | struct list_head *head) | |
1da177e4 LT |
776 | { |
777 | struct list_head *pos; | |
778 | struct fb_modelist *modelist; | |
779 | struct fb_videomode *mode, *best = NULL; | |
780 | u32 diff = -1; | |
781 | ||
782 | list_for_each(pos, head) { | |
783 | u32 d; | |
784 | ||
785 | modelist = list_entry(pos, struct fb_modelist, list); | |
786 | mode = &modelist->mode; | |
787 | ||
788 | if (mode->xres >= var->xres && mode->yres >= var->yres) { | |
789 | d = (mode->xres - var->xres) + | |
790 | (mode->yres - var->yres); | |
791 | if (diff > d) { | |
792 | diff = d; | |
793 | best = mode; | |
17cc6281 AD |
794 | } else if (diff == d && best && |
795 | mode->refresh > best->refresh) | |
796 | best = mode; | |
1da177e4 LT |
797 | } |
798 | } | |
799 | return best; | |
800 | } | |
801 | ||
802 | /** | |
8fb6567e | 803 | * fb_find_nearest_mode - find closest videomode |
1da177e4 | 804 | * |
8fb6567e | 805 | * @mode: pointer to struct fb_videomode |
1da177e4 LT |
806 | * @head: pointer to modelist |
807 | * | |
808 | * Finds best matching videomode, smaller or greater in dimension. | |
809 | * If more than 1 videomode is found, will return the videomode with | |
8fb6567e | 810 | * the closest refresh rate. |
1da177e4 | 811 | */ |
9791d763 GU |
812 | const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, |
813 | struct list_head *head) | |
1da177e4 LT |
814 | { |
815 | struct list_head *pos; | |
816 | struct fb_modelist *modelist; | |
8fb6567e | 817 | struct fb_videomode *cmode, *best = NULL; |
1da177e4 LT |
818 | u32 diff = -1, diff_refresh = -1; |
819 | ||
820 | list_for_each(pos, head) { | |
821 | u32 d; | |
822 | ||
823 | modelist = list_entry(pos, struct fb_modelist, list); | |
8fb6567e | 824 | cmode = &modelist->mode; |
1da177e4 | 825 | |
8fb6567e MJ |
826 | d = abs(cmode->xres - mode->xres) + |
827 | abs(cmode->yres - mode->yres); | |
1da177e4 LT |
828 | if (diff > d) { |
829 | diff = d; | |
8fb6567e | 830 | best = cmode; |
1da177e4 | 831 | } else if (diff == d) { |
8fb6567e | 832 | d = abs(cmode->refresh - mode->refresh); |
1da177e4 LT |
833 | if (diff_refresh > d) { |
834 | diff_refresh = d; | |
8fb6567e | 835 | best = cmode; |
1da177e4 LT |
836 | } |
837 | } | |
838 | } | |
839 | ||
840 | return best; | |
841 | } | |
842 | ||
843 | /** | |
844 | * fb_match_mode - find a videomode which exactly matches the timings in var | |
845 | * @var: pointer to struct fb_var_screeninfo | |
846 | * @head: pointer to struct list_head of modelist | |
847 | * | |
848 | * RETURNS: | |
849 | * struct fb_videomode, NULL if none found | |
850 | */ | |
9791d763 GU |
851 | const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, |
852 | struct list_head *head) | |
1da177e4 LT |
853 | { |
854 | struct list_head *pos; | |
855 | struct fb_modelist *modelist; | |
856 | struct fb_videomode *m, mode; | |
857 | ||
858 | fb_var_to_videomode(&mode, var); | |
859 | list_for_each(pos, head) { | |
860 | modelist = list_entry(pos, struct fb_modelist, list); | |
861 | m = &modelist->mode; | |
862 | if (fb_mode_is_equal(m, &mode)) | |
863 | return m; | |
864 | } | |
865 | return NULL; | |
866 | } | |
867 | ||
868 | /** | |
869 | * fb_add_videomode: adds videomode entry to modelist | |
870 | * @mode: videomode to add | |
871 | * @head: struct list_head of modelist | |
872 | * | |
873 | * NOTES: | |
874 | * Will only add unmatched mode entries | |
875 | */ | |
9791d763 | 876 | int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) |
1da177e4 LT |
877 | { |
878 | struct list_head *pos; | |
879 | struct fb_modelist *modelist; | |
880 | struct fb_videomode *m; | |
881 | int found = 0; | |
882 | ||
883 | list_for_each(pos, head) { | |
884 | modelist = list_entry(pos, struct fb_modelist, list); | |
885 | m = &modelist->mode; | |
886 | if (fb_mode_is_equal(m, mode)) { | |
887 | found = 1; | |
888 | break; | |
889 | } | |
890 | } | |
891 | if (!found) { | |
892 | modelist = kmalloc(sizeof(struct fb_modelist), | |
893 | GFP_KERNEL); | |
894 | ||
895 | if (!modelist) | |
896 | return -ENOMEM; | |
897 | modelist->mode = *mode; | |
898 | list_add(&modelist->list, head); | |
899 | } | |
900 | return 0; | |
901 | } | |
902 | ||
903 | /** | |
904 | * fb_delete_videomode: removed videomode entry from modelist | |
905 | * @mode: videomode to remove | |
906 | * @head: struct list_head of modelist | |
907 | * | |
908 | * NOTES: | |
909 | * Will remove all matching mode entries | |
910 | */ | |
9791d763 GU |
911 | void fb_delete_videomode(const struct fb_videomode *mode, |
912 | struct list_head *head) | |
1da177e4 LT |
913 | { |
914 | struct list_head *pos, *n; | |
915 | struct fb_modelist *modelist; | |
916 | struct fb_videomode *m; | |
917 | ||
918 | list_for_each_safe(pos, n, head) { | |
919 | modelist = list_entry(pos, struct fb_modelist, list); | |
920 | m = &modelist->mode; | |
921 | if (fb_mode_is_equal(m, mode)) { | |
922 | list_del(pos); | |
923 | kfree(pos); | |
924 | } | |
925 | } | |
926 | } | |
927 | ||
928 | /** | |
929 | * fb_destroy_modelist: destroy modelist | |
930 | * @head: struct list_head of modelist | |
931 | */ | |
932 | void fb_destroy_modelist(struct list_head *head) | |
933 | { | |
934 | struct list_head *pos, *n; | |
935 | ||
936 | list_for_each_safe(pos, n, head) { | |
937 | list_del(pos); | |
938 | kfree(pos); | |
939 | } | |
940 | } | |
941 | ||
942 | /** | |
943 | * fb_videomode_to_modelist: convert mode array to mode list | |
944 | * @modedb: array of struct fb_videomode | |
945 | * @num: number of entries in array | |
946 | * @head: struct list_head of modelist | |
947 | */ | |
9791d763 | 948 | void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, |
1da177e4 LT |
949 | struct list_head *head) |
950 | { | |
951 | int i; | |
952 | ||
953 | INIT_LIST_HEAD(head); | |
954 | ||
955 | for (i = 0; i < num; i++) { | |
956 | if (fb_add_videomode(&modedb[i], head)) | |
957 | return; | |
958 | } | |
959 | } | |
960 | ||
9791d763 GU |
961 | const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, |
962 | struct list_head *head) | |
003cfc0c AD |
963 | { |
964 | struct list_head *pos; | |
965 | struct fb_modelist *modelist; | |
9791d763 | 966 | const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; |
003cfc0c AD |
967 | int first = 0; |
968 | ||
969 | if (!head->prev || !head->next || list_empty(head)) | |
970 | goto finished; | |
971 | ||
972 | /* get the first detailed mode and the very first mode */ | |
973 | list_for_each(pos, head) { | |
974 | modelist = list_entry(pos, struct fb_modelist, list); | |
975 | m = &modelist->mode; | |
976 | ||
977 | if (!first) { | |
978 | m1 = m; | |
979 | first = 1; | |
980 | } | |
981 | ||
982 | if (m->flag & FB_MODE_IS_FIRST) { | |
983 | md = m; | |
984 | break; | |
985 | } | |
986 | } | |
987 | ||
988 | /* first detailed timing is preferred */ | |
989 | if (specs->misc & FB_MISC_1ST_DETAIL) { | |
990 | best = md; | |
991 | goto finished; | |
992 | } | |
993 | ||
994 | /* find best mode based on display width and height */ | |
995 | if (specs->max_x && specs->max_y) { | |
996 | struct fb_var_screeninfo var; | |
997 | ||
998 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); | |
999 | var.xres = (specs->max_x * 7200)/254; | |
1000 | var.yres = (specs->max_y * 7200)/254; | |
1001 | m = fb_find_best_mode(&var, head); | |
1002 | if (m) { | |
1003 | best = m; | |
1004 | goto finished; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /* use first detailed mode */ | |
1009 | if (md) { | |
1010 | best = md; | |
1011 | goto finished; | |
1012 | } | |
1013 | ||
1014 | /* last resort, use the very first mode */ | |
1015 | best = m1; | |
1016 | finished: | |
1017 | return best; | |
1018 | } | |
1019 | EXPORT_SYMBOL(fb_find_best_display); | |
1020 | ||
1da177e4 LT |
1021 | EXPORT_SYMBOL(fb_videomode_to_var); |
1022 | EXPORT_SYMBOL(fb_var_to_videomode); | |
1023 | EXPORT_SYMBOL(fb_mode_is_equal); | |
1024 | EXPORT_SYMBOL(fb_add_videomode); | |
1da177e4 LT |
1025 | EXPORT_SYMBOL(fb_match_mode); |
1026 | EXPORT_SYMBOL(fb_find_best_mode); | |
1027 | EXPORT_SYMBOL(fb_find_nearest_mode); | |
1028 | EXPORT_SYMBOL(fb_videomode_to_modelist); | |
1029 | EXPORT_SYMBOL(fb_find_mode); |