1210 lines · c
1/*2 * linux/drivers/video/modedb.c -- Standard video mode database management3 *4 * Copyright (C) 1999 Geert Uytterhoeven5 *6 * 2001 - Documented with DocBook7 * - Brad Douglas <brad@neruo.com>8 *9 * This file is subject to the terms and conditions of the GNU General Public10 * License. See the file COPYING in the main directory of this archive for11 * more details.12 */13 14#include <linux/module.h>15#include <linux/slab.h>16#include <linux/fb.h>17#include <linux/kernel.h>18 19#undef DEBUG20 21#define name_matches(v, s, l) \22 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))23#define res_matches(v, x, y) \24 ((v).xres == (x) && (v).yres == (y))25 26#ifdef DEBUG27#define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args)28#else29#define DPRINTK(fmt, args...)30#endif31 32/*33 * Standard video mode definitions (taken from XFree86)34 */35 36static const struct fb_videomode modedb[] = {37 38 /* 640x400 @ 70 Hz, 31.5 kHz hsync */39 { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0,40 FB_VMODE_NONINTERLACED },41 42 /* 640x480 @ 60 Hz, 31.5 kHz hsync */43 { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0,44 FB_VMODE_NONINTERLACED },45 46 /* 800x600 @ 56 Hz, 35.15 kHz hsync */47 { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0,48 FB_VMODE_NONINTERLACED },49 50 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */51 { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0,52 FB_VMODE_INTERLACED },53 54 /* 640x400 @ 85 Hz, 37.86 kHz hsync */55 { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,56 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED },57 58 /* 640x480 @ 72 Hz, 36.5 kHz hsync */59 { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0,60 FB_VMODE_NONINTERLACED },61 62 /* 640x480 @ 75 Hz, 37.50 kHz hsync */63 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0,64 FB_VMODE_NONINTERLACED },65 66 /* 800x600 @ 60 Hz, 37.8 kHz hsync */67 { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,68 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,69 FB_VMODE_NONINTERLACED },70 71 /* 640x480 @ 85 Hz, 43.27 kHz hsync */72 { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0,73 FB_VMODE_NONINTERLACED },74 75 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */76 { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0,77 FB_VMODE_INTERLACED },78 /* 800x600 @ 72 Hz, 48.0 kHz hsync */79 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,80 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,81 FB_VMODE_NONINTERLACED },82 83 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */84 { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0,85 FB_VMODE_NONINTERLACED },86 87 /* 640x480 @ 100 Hz, 53.01 kHz hsync */88 { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0,89 FB_VMODE_NONINTERLACED },90 91 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */92 { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0,93 FB_VMODE_NONINTERLACED },94 95 /* 800x600 @ 85 Hz, 55.84 kHz hsync */96 { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0,97 FB_VMODE_NONINTERLACED },98 99 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */100 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0,101 FB_VMODE_NONINTERLACED },102 103 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */104 { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0,105 FB_VMODE_INTERLACED },106 107 /* 800x600 @ 100 Hz, 64.02 kHz hsync */108 { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0,109 FB_VMODE_NONINTERLACED },110 111 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */112 { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0,113 FB_VMODE_NONINTERLACED },114 115 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */116 { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0,117 FB_VMODE_NONINTERLACED },118 119 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */120 { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0,121 FB_VMODE_NONINTERLACED },122 123 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */124 { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0,125 FB_VMODE_NONINTERLACED },126 127 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/128 { NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13,129 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,130 FB_VMODE_NONINTERLACED },131 132 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/133 { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,134 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,135 FB_VMODE_NONINTERLACED },136 137 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */138 { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0,139 FB_VMODE_NONINTERLACED },140 141 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */142 { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0,143 FB_VMODE_NONINTERLACED },144 145 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */146 { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0,147 FB_VMODE_NONINTERLACED },148 149 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */150 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,151 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,152 FB_VMODE_NONINTERLACED },153 154 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */155 { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0,156 FB_VMODE_NONINTERLACED },157 158 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */159 { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0,160 FB_VMODE_NONINTERLACED },161 162 /* 1024x768 @ 100Hz, 80.21 kHz hsync */163 { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0,164 FB_VMODE_NONINTERLACED },165 166 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */167 { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0,168 FB_VMODE_NONINTERLACED },169 170 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */171 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0,172 FB_VMODE_NONINTERLACED },173 174 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */175 { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0,176 FB_VMODE_NONINTERLACED },177 178 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */179 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,180 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,181 FB_VMODE_NONINTERLACED },182 183 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */184 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,185 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,186 FB_VMODE_NONINTERLACED },187 188 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */189 { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,190 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,191 FB_VMODE_NONINTERLACED },192 193 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */194 { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,195 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,196 FB_VMODE_NONINTERLACED },197 198 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */199 { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0,200 FB_VMODE_NONINTERLACED },201 202 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */203 { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,204 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,205 FB_VMODE_NONINTERLACED },206 207 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */208 { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,209 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,210 FB_VMODE_NONINTERLACED },211 212 /* 512x384 @ 78 Hz, 31.50 kHz hsync */213 { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0,214 FB_VMODE_NONINTERLACED },215 216 /* 512x384 @ 85 Hz, 34.38 kHz hsync */217 { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0,218 FB_VMODE_NONINTERLACED },219 220 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */221 { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0,222 FB_VMODE_DOUBLE },223 224 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */225 { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0,226 FB_VMODE_DOUBLE },227 228 /* 320x240 @ 72 Hz, 36.5 kHz hsync */229 { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0,230 FB_VMODE_DOUBLE },231 232 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */233 { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0,234 FB_VMODE_DOUBLE },235 236 /* 400x300 @ 60 Hz, 37.8 kHz hsync */237 { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0,238 FB_VMODE_DOUBLE },239 240 /* 400x300 @ 72 Hz, 48.0 kHz hsync */241 { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0,242 FB_VMODE_DOUBLE },243 244 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */245 { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0,246 FB_VMODE_DOUBLE },247 248 /* 480x300 @ 60 Hz, 37.8 kHz hsync */249 { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0,250 FB_VMODE_DOUBLE },251 252 /* 480x300 @ 63 Hz, 39.6 kHz hsync */253 { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0,254 FB_VMODE_DOUBLE },255 256 /* 480x300 @ 72 Hz, 48.0 kHz hsync */257 { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0,258 FB_VMODE_DOUBLE },259 260 /* 1920x1080 @ 60 Hz, 67.3 kHz hsync */261 { NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5, 0,262 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,263 FB_VMODE_NONINTERLACED },264 265 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */266 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,267 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,268 FB_VMODE_NONINTERLACED },269 270 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */271 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,272 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,273 FB_VMODE_NONINTERLACED },274 275 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */276 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0,277 FB_VMODE_NONINTERLACED },278 279 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */280 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0,281 FB_VMODE_NONINTERLACED },282 283 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */284 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0,285 FB_VMODE_INTERLACED },286 287 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */288 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0,289 FB_VMODE_INTERLACED },290 291 /* 864x480 @ 60 Hz, 35.15 kHz hsync */292 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0,293 0, FB_VMODE_NONINTERLACED },294};295 296#ifdef CONFIG_FB_MODE_HELPERS297const struct fb_videomode vesa_modes[] = {298 /* 0 640x350-85 VESA */299 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3,300 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},301 /* 1 640x400-85 VESA */302 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3,303 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },304 /* 2 720x400-85 VESA */305 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3,306 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },307 /* 3 640x480-60 VESA */308 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,309 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },310 /* 4 640x480-72 VESA */311 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2,312 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },313 /* 5 640x480-75 VESA */314 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,315 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },316 /* 6 640x480-85 VESA */317 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,318 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },319 /* 7 800x600-56 VESA */320 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2,321 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,322 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },323 /* 8 800x600-60 VESA */324 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,326 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },327 /* 9 800x600-72 VESA */328 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,329 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,330 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },331 /* 10 800x600-75 VESA */332 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },335 /* 11 800x600-85 VESA */336 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },339 /* 12 1024x768i-43 VESA */340 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8,341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,342 FB_VMODE_INTERLACED, FB_MODE_IS_VESA },343 /* 13 1024x768-60 VESA */344 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,345 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },346 /* 14 1024x768-70 VESA */347 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,348 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },349 /* 15 1024x768-75 VESA */350 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,351 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,352 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },353 /* 16 1024x768-85 VESA */354 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,355 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,356 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },357 /* 17 1152x864-75 VESA */358 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,359 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,360 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },361 /* 18 1280x960-60 VESA */362 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,363 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,364 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },365 /* 19 1280x960-85 VESA */366 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,367 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,368 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },369 /* 20 1280x1024-60 VESA */370 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,371 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,372 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },373 /* 21 1280x1024-75 VESA */374 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,375 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,376 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },377 /* 22 1280x1024-85 VESA */378 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,379 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,380 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },381 /* 23 1600x1200-60 VESA */382 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,383 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,384 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },385 /* 24 1600x1200-65 VESA */386 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3,387 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,388 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },389 /* 25 1600x1200-70 VESA */390 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,391 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,392 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },393 /* 26 1600x1200-75 VESA */394 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,395 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,396 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },397 /* 27 1600x1200-85 VESA */398 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,399 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,400 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },401 /* 28 1792x1344-60 VESA */402 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3,403 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },404 /* 29 1792x1344-75 VESA */405 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3,406 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },407 /* 30 1856x1392-60 VESA */408 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3,409 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },410 /* 31 1856x1392-75 VESA */411 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3,412 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },413 /* 32 1920x1440-60 VESA */414 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3,415 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },416 /* 33 1920x1440-75 VESA */417 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,418 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },419 /* 34 1920x1200-60 RB VESA */420 { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6,421 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },422 /* 35 1920x1200-60 VESA */423 { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6,424 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },425 /* 36 1920x1200-75 VESA */426 { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6,427 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },428 /* 37 1920x1200-85 VESA */429 { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6,430 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },431 /* 38 2560x1600-60 RB VESA */432 { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6,433 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },434 /* 39 2560x1600-60 VESA */435 { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6,436 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },437 /* 40 2560x1600-75 VESA */438 { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6,439 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },440 /* 41 2560x1600-85 VESA */441 { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6,442 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },443 /* 42 2560x1600-120 RB VESA */444 { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6,445 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },446};447EXPORT_SYMBOL(vesa_modes);448 449const struct dmt_videomode dmt_modes[DMT_SIZE] = {450 { 0x01, 0x0000, 0x000000, &vesa_modes[0] },451 { 0x02, 0x3119, 0x000000, &vesa_modes[1] },452 { 0x03, 0x0000, 0x000000, &vesa_modes[2] },453 { 0x04, 0x3140, 0x000000, &vesa_modes[3] },454 { 0x05, 0x314c, 0x000000, &vesa_modes[4] },455 { 0x06, 0x314f, 0x000000, &vesa_modes[5] },456 { 0x07, 0x3159, 0x000000, &vesa_modes[6] },457 { 0x08, 0x0000, 0x000000, &vesa_modes[7] },458 { 0x09, 0x4540, 0x000000, &vesa_modes[8] },459 { 0x0a, 0x454c, 0x000000, &vesa_modes[9] },460 { 0x0b, 0x454f, 0x000000, &vesa_modes[10] },461 { 0x0c, 0x4559, 0x000000, &vesa_modes[11] },462 { 0x0d, 0x0000, 0x000000, NULL },463 { 0x0e, 0x0000, 0x000000, NULL },464 { 0x0f, 0x0000, 0x000000, &vesa_modes[12] },465 { 0x10, 0x6140, 0x000000, &vesa_modes[13] },466 { 0x11, 0x614a, 0x000000, &vesa_modes[14] },467 { 0x12, 0x614f, 0x000000, &vesa_modes[15] },468 { 0x13, 0x6159, 0x000000, &vesa_modes[16] },469 { 0x14, 0x0000, 0x000000, NULL },470 { 0x15, 0x714f, 0x000000, &vesa_modes[17] },471 { 0x16, 0x0000, 0x7f1c21, NULL },472 { 0x17, 0x0000, 0x7f1c28, NULL },473 { 0x18, 0x0000, 0x7f1c44, NULL },474 { 0x19, 0x0000, 0x7f1c62, NULL },475 { 0x1a, 0x0000, 0x000000, NULL },476 { 0x1b, 0x0000, 0x8f1821, NULL },477 { 0x1c, 0x8100, 0x8f1828, NULL },478 { 0x1d, 0x810f, 0x8f1844, NULL },479 { 0x1e, 0x8119, 0x8f1862, NULL },480 { 0x1f, 0x0000, 0x000000, NULL },481 { 0x20, 0x8140, 0x000000, &vesa_modes[18] },482 { 0x21, 0x8159, 0x000000, &vesa_modes[19] },483 { 0x22, 0x0000, 0x000000, NULL },484 { 0x23, 0x8180, 0x000000, &vesa_modes[20] },485 { 0x24, 0x818f, 0x000000, &vesa_modes[21] },486 { 0x25, 0x8199, 0x000000, &vesa_modes[22] },487 { 0x26, 0x0000, 0x000000, NULL },488 { 0x27, 0x0000, 0x000000, NULL },489 { 0x28, 0x0000, 0x000000, NULL },490 { 0x29, 0x0000, 0x0c2021, NULL },491 { 0x2a, 0x9040, 0x0c2028, NULL },492 { 0x2b, 0x904f, 0x0c2044, NULL },493 { 0x2c, 0x9059, 0x0c2062, NULL },494 { 0x2d, 0x0000, 0x000000, NULL },495 { 0x2e, 0x9500, 0xc11821, NULL },496 { 0x2f, 0x9500, 0xc11828, NULL },497 { 0x30, 0x950f, 0xc11844, NULL },498 { 0x31, 0x9519, 0xc11868, NULL },499 { 0x32, 0x0000, 0x000000, NULL },500 { 0x33, 0xa940, 0x000000, &vesa_modes[23] },501 { 0x34, 0xa945, 0x000000, &vesa_modes[24] },502 { 0x35, 0xa94a, 0x000000, &vesa_modes[25] },503 { 0x36, 0xa94f, 0x000000, &vesa_modes[26] },504 { 0x37, 0xa959, 0x000000, &vesa_modes[27] },505 { 0x38, 0x0000, 0x000000, NULL },506 { 0x39, 0x0000, 0x0c2821, NULL },507 { 0x3a, 0xb300, 0x0c2828, NULL },508 { 0x3b, 0xb30f, 0x0c2844, NULL },509 { 0x3c, 0xb319, 0x0c2868, NULL },510 { 0x3d, 0x0000, 0x000000, NULL },511 { 0x3e, 0xc140, 0x000000, &vesa_modes[28] },512 { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] },513 { 0x40, 0x0000, 0x000000, NULL},514 { 0x41, 0xc940, 0x000000, &vesa_modes[30] },515 { 0x42, 0xc94f, 0x000000, &vesa_modes[31] },516 { 0x43, 0x0000, 0x000000, NULL },517 { 0x44, 0x0000, 0x572821, &vesa_modes[34] },518 { 0x45, 0xd100, 0x572828, &vesa_modes[35] },519 { 0x46, 0xd10f, 0x572844, &vesa_modes[36] },520 { 0x47, 0xd119, 0x572862, &vesa_modes[37] },521 { 0x48, 0x0000, 0x000000, NULL },522 { 0x49, 0xd140, 0x000000, &vesa_modes[32] },523 { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] },524 { 0x4b, 0x0000, 0x000000, NULL },525 { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] },526 { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] },527 { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] },528 { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] },529 { 0x50, 0x0000, 0x000000, &vesa_modes[42] },530};531EXPORT_SYMBOL(dmt_modes);532#endif /* CONFIG_FB_MODE_HELPERS */533 534/**535 * fb_try_mode - test a video mode536 * @var: frame buffer user defined part of display537 * @info: frame buffer info structure538 * @mode: frame buffer video mode structure539 * @bpp: color depth in bits per pixel540 *541 * Tries a video mode to test it's validity for device @info.542 *543 * Returns 1 on success.544 *545 */546 547static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,548 const struct fb_videomode *mode, unsigned int bpp)549{550 int err = 0;551 552 DPRINTK("Trying mode %s %dx%d-%d@%d\n",553 mode->name ? mode->name : "noname",554 mode->xres, mode->yres, bpp, mode->refresh);555 var->xres = mode->xres;556 var->yres = mode->yres;557 var->xres_virtual = mode->xres;558 var->yres_virtual = mode->yres;559 var->xoffset = 0;560 var->yoffset = 0;561 var->bits_per_pixel = bpp;562 var->activate |= FB_ACTIVATE_TEST;563 var->pixclock = mode->pixclock;564 var->left_margin = mode->left_margin;565 var->right_margin = mode->right_margin;566 var->upper_margin = mode->upper_margin;567 var->lower_margin = mode->lower_margin;568 var->hsync_len = mode->hsync_len;569 var->vsync_len = mode->vsync_len;570 var->sync = mode->sync;571 var->vmode = mode->vmode;572 if (info->fbops->fb_check_var)573 err = info->fbops->fb_check_var(var, info);574 var->activate &= ~FB_ACTIVATE_TEST;575 return err;576}577 578/**579 * fb_find_mode - finds a valid video mode580 * @var: frame buffer user defined part of display581 * @info: frame buffer info structure582 * @mode_option: string video mode to find583 * @db: video mode database584 * @dbsize: size of @db585 * @default_mode: default video mode to fall back to586 * @default_bpp: default color depth in bits per pixel587 *588 * Finds a suitable video mode, starting with the specified mode589 * in @mode_option with fallback to @default_mode. If590 * @default_mode fails, all modes in the video mode database will591 * be tried.592 *593 * Valid mode specifiers for @mode_option::594 *595 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m]596 *597 * or ::598 *599 * <name>[-<bpp>][@<refresh>]600 *601 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and602 * <name> a string.603 *604 * If 'M' is present after yres (and before refresh/bpp if present),605 * the function will compute the timings using VESA(tm) Coordinated606 * Video Timings (CVT). If 'R' is present after 'M', will compute with607 * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute608 * interlaced or progressive mode. If 'm' is present, add margins equal609 * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char610 * 'i', 'p' and 'm' must be after 'M' and 'R'. Example::611 *612 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz.613 *614 * NOTE: The passed struct @var is _not_ cleared! This allows you615 * to supply values for e.g. the grayscale and accel_flags fields.616 *617 * Returns zero for failure, 1 if using specified @mode_option,618 * 2 if using specified @mode_option with an ignored refresh rate,619 * 3 if default mode is used, 4 if fall back to any valid mode.620 */621 622int fb_find_mode(struct fb_var_screeninfo *var,623 struct fb_info *info, const char *mode_option,624 const struct fb_videomode *db, unsigned int dbsize,625 const struct fb_videomode *default_mode,626 unsigned int default_bpp)627{628 char *mode_option_buf = NULL;629 int i;630 631 /* Set up defaults */632 if (!db) {633 db = modedb;634 dbsize = ARRAY_SIZE(modedb);635 }636 637 if (!default_mode)638 default_mode = &db[0];639 640 if (!default_bpp)641 default_bpp = 8;642 643 /* Did the user specify a video mode? */644 if (!mode_option) {645 fb_get_options(NULL, &mode_option_buf);646 mode_option = mode_option_buf;647 }648 if (mode_option) {649 const char *name = mode_option;650 unsigned int namelen = strlen(name);651 int res_specified = 0, bpp_specified = 0, refresh_specified = 0;652 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;653 int yres_specified = 0, cvt = 0, rb = 0;654 int interlace_specified = 0, interlace = 0;655 int margins = 0;656 u32 best, diff, tdiff;657 658 for (i = namelen-1; i >= 0; i--) {659 switch (name[i]) {660 case '@':661 namelen = i;662 if (!refresh_specified && !bpp_specified &&663 !yres_specified) {664 refresh = simple_strtol(&name[i+1], NULL,665 10);666 refresh_specified = 1;667 if (cvt || rb)668 cvt = 0;669 } else670 goto done;671 break;672 case '-':673 namelen = i;674 if (!bpp_specified && !yres_specified) {675 bpp = simple_strtol(&name[i+1], NULL,676 10);677 bpp_specified = 1;678 if (cvt || rb)679 cvt = 0;680 } else681 goto done;682 break;683 case 'x':684 if (!yres_specified) {685 yres = simple_strtol(&name[i+1], NULL,686 10);687 yres_specified = 1;688 } else689 goto done;690 break;691 case '0' ... '9':692 break;693 case 'M':694 if (!yres_specified)695 cvt = 1;696 break;697 case 'R':698 if (!cvt)699 rb = 1;700 break;701 case 'm':702 if (!cvt)703 margins = 1;704 break;705 case 'p':706 if (!cvt) {707 interlace = 0;708 interlace_specified = 1;709 }710 break;711 case 'i':712 if (!cvt) {713 interlace = 1;714 interlace_specified = 1;715 }716 break;717 default:718 goto done;719 }720 }721 if (i < 0 && yres_specified) {722 xres = simple_strtol(name, NULL, 10);723 res_specified = 1;724 }725done:726 kfree(mode_option_buf);727 if (cvt) {728 struct fb_videomode cvt_mode;729 int ret;730 731 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,732 (refresh) ? refresh : 60,733 (rb) ? " reduced blanking" : "",734 (margins) ? " with margins" : "",735 (interlace) ? " interlaced" : "");736 737 memset(&cvt_mode, 0, sizeof(cvt_mode));738 cvt_mode.xres = xres;739 cvt_mode.yres = yres;740 cvt_mode.refresh = (refresh) ? refresh : 60;741 742 if (interlace)743 cvt_mode.vmode |= FB_VMODE_INTERLACED;744 else745 cvt_mode.vmode &= ~FB_VMODE_INTERLACED;746 747 ret = fb_find_mode_cvt(&cvt_mode, margins, rb);748 749 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {750 DPRINTK("modedb CVT: CVT mode ok\n");751 return 1;752 }753 754 DPRINTK("CVT mode invalid, getting mode from database\n");755 }756 757 DPRINTK("Trying specified video mode%s %ix%i\n",758 refresh_specified ? "" : " (ignoring refresh rate)",759 xres, yres);760 761 if (!refresh_specified) {762 /*763 * If the caller has provided a custom mode database and764 * a valid monspecs structure, we look for the mode with765 * the highest refresh rate. Otherwise we play it safe766 * it and try to find a mode with a refresh rate closest767 * to the standard 60 Hz.768 */769 if (db != modedb &&770 info->monspecs.vfmin && info->monspecs.vfmax &&771 info->monspecs.hfmin && info->monspecs.hfmax &&772 info->monspecs.dclkmax) {773 refresh = 1000;774 } else {775 refresh = 60;776 }777 }778 779 diff = -1;780 best = -1;781 for (i = 0; i < dbsize; i++) {782 if ((name_matches(db[i], name, namelen) ||783 (res_specified && res_matches(db[i], xres, yres))) &&784 !fb_try_mode(var, info, &db[i], bpp)) {785 const int db_interlace = (db[i].vmode &786 FB_VMODE_INTERLACED ? 1 : 0);787 int score = abs(db[i].refresh - refresh);788 789 if (interlace_specified)790 score += abs(db_interlace - interlace);791 792 if (!interlace_specified ||793 db_interlace == interlace)794 if (refresh_specified &&795 db[i].refresh == refresh)796 return 1;797 798 if (score < diff) {799 diff = score;800 best = i;801 }802 }803 }804 if (best != -1) {805 fb_try_mode(var, info, &db[best], bpp);806 return (refresh_specified) ? 2 : 1;807 }808 809 diff = 2 * (xres + yres);810 best = -1;811 DPRINTK("Trying best-fit modes\n");812 for (i = 0; i < dbsize; i++) {813 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres);814 if (!fb_try_mode(var, info, &db[i], bpp)) {815 tdiff = abs(db[i].xres - xres) +816 abs(db[i].yres - yres);817 818 /*819 * Penalize modes with resolutions smaller820 * than requested.821 */822 if (xres > db[i].xres || yres > db[i].yres)823 tdiff += xres + yres;824 825 if (diff > tdiff) {826 diff = tdiff;827 best = i;828 }829 }830 }831 if (best != -1) {832 fb_try_mode(var, info, &db[best], bpp);833 return 5;834 }835 }836 837 DPRINTK("Trying default video mode\n");838 if (!fb_try_mode(var, info, default_mode, default_bpp))839 return 3;840 841 DPRINTK("Trying all modes\n");842 for (i = 0; i < dbsize; i++)843 if (!fb_try_mode(var, info, &db[i], default_bpp))844 return 4;845 846 DPRINTK("No valid mode found\n");847 return 0;848}849 850/**851 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode852 * @mode: pointer to struct fb_videomode853 * @var: pointer to struct fb_var_screeninfo854 */855void fb_var_to_videomode(struct fb_videomode *mode,856 const struct fb_var_screeninfo *var)857{858 u32 pixclock, hfreq, htotal, vtotal;859 860 mode->name = NULL;861 mode->xres = var->xres;862 mode->yres = var->yres;863 mode->pixclock = var->pixclock;864 mode->hsync_len = var->hsync_len;865 mode->vsync_len = var->vsync_len;866 mode->left_margin = var->left_margin;867 mode->right_margin = var->right_margin;868 mode->upper_margin = var->upper_margin;869 mode->lower_margin = var->lower_margin;870 mode->sync = var->sync;871 mode->vmode = var->vmode & FB_VMODE_MASK;872 mode->flag = FB_MODE_IS_FROM_VAR;873 mode->refresh = 0;874 875 if (!var->pixclock)876 return;877 878 pixclock = PICOS2KHZ(var->pixclock) * 1000;879 880 htotal = var->xres + var->right_margin + var->hsync_len +881 var->left_margin;882 vtotal = var->yres + var->lower_margin + var->vsync_len +883 var->upper_margin;884 885 if (var->vmode & FB_VMODE_INTERLACED)886 vtotal /= 2;887 if (var->vmode & FB_VMODE_DOUBLE)888 vtotal *= 2;889 890 if (!htotal || !vtotal)891 return;892 893 hfreq = pixclock/htotal;894 mode->refresh = hfreq/vtotal;895}896 897/**898 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo899 * @var: pointer to struct fb_var_screeninfo900 * @mode: pointer to struct fb_videomode901 */902void fb_videomode_to_var(struct fb_var_screeninfo *var,903 const struct fb_videomode *mode)904{905 var->xres = mode->xres;906 var->yres = mode->yres;907 var->xres_virtual = mode->xres;908 var->yres_virtual = mode->yres;909 var->xoffset = 0;910 var->yoffset = 0;911 var->pixclock = mode->pixclock;912 var->left_margin = mode->left_margin;913 var->right_margin = mode->right_margin;914 var->upper_margin = mode->upper_margin;915 var->lower_margin = mode->lower_margin;916 var->hsync_len = mode->hsync_len;917 var->vsync_len = mode->vsync_len;918 var->sync = mode->sync;919 var->vmode = mode->vmode & FB_VMODE_MASK;920}921 922/**923 * fb_mode_is_equal - compare 2 videomodes924 * @mode1: first videomode925 * @mode2: second videomode926 *927 * RETURNS:928 * 1 if equal, 0 if not929 */930int fb_mode_is_equal(const struct fb_videomode *mode1,931 const struct fb_videomode *mode2)932{933 return (mode1->xres == mode2->xres &&934 mode1->yres == mode2->yres &&935 mode1->pixclock == mode2->pixclock &&936 mode1->hsync_len == mode2->hsync_len &&937 mode1->vsync_len == mode2->vsync_len &&938 mode1->left_margin == mode2->left_margin &&939 mode1->right_margin == mode2->right_margin &&940 mode1->upper_margin == mode2->upper_margin &&941 mode1->lower_margin == mode2->lower_margin &&942 mode1->sync == mode2->sync &&943 mode1->vmode == mode2->vmode);944}945 946/**947 * fb_find_best_mode - find best matching videomode948 * @var: pointer to struct fb_var_screeninfo949 * @head: pointer to struct list_head of modelist950 *951 * RETURNS:952 * struct fb_videomode, NULL if none found953 *954 * IMPORTANT:955 * This function assumes that all modelist entries in956 * info->modelist are valid.957 *958 * NOTES:959 * Finds best matching videomode which has an equal or greater dimension than960 * var->xres and var->yres. If more than 1 videomode is found, will return961 * the videomode with the highest refresh rate962 */963const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,964 struct list_head *head)965{966 struct fb_modelist *modelist;967 struct fb_videomode *mode, *best = NULL;968 u32 diff = -1;969 970 list_for_each_entry(modelist, head, list) {971 u32 d;972 mode = &modelist->mode;973 974 if (mode->xres >= var->xres && mode->yres >= var->yres) {975 d = (mode->xres - var->xres) +976 (mode->yres - var->yres);977 if (diff > d) {978 diff = d;979 best = mode;980 } else if (diff == d && best &&981 mode->refresh > best->refresh)982 best = mode;983 }984 }985 return best;986}987 988/**989 * fb_find_nearest_mode - find closest videomode990 *991 * @mode: pointer to struct fb_videomode992 * @head: pointer to modelist993 *994 * Finds best matching videomode, smaller or greater in dimension.995 * If more than 1 videomode is found, will return the videomode with996 * the closest refresh rate.997 */998const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,999 struct list_head *head)1000{1001 struct fb_modelist *modelist;1002 struct fb_videomode *cmode, *best = NULL;1003 u32 diff = -1, diff_refresh = -1;1004 1005 list_for_each_entry(modelist, head, list) {1006 u32 d;1007 cmode = &modelist->mode;1008 1009 d = abs(cmode->xres - mode->xres) +1010 abs(cmode->yres - mode->yres);1011 if (diff > d) {1012 diff = d;1013 diff_refresh = abs(cmode->refresh - mode->refresh);1014 best = cmode;1015 } else if (diff == d) {1016 d = abs(cmode->refresh - mode->refresh);1017 if (diff_refresh > d) {1018 diff_refresh = d;1019 best = cmode;1020 }1021 }1022 }1023 1024 return best;1025}1026 1027/**1028 * fb_match_mode - find a videomode which exactly matches the timings in var1029 * @var: pointer to struct fb_var_screeninfo1030 * @head: pointer to struct list_head of modelist1031 *1032 * RETURNS:1033 * struct fb_videomode, NULL if none found1034 */1035const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,1036 struct list_head *head)1037{1038 struct fb_modelist *modelist;1039 struct fb_videomode *m, mode;1040 1041 fb_var_to_videomode(&mode, var);1042 list_for_each_entry(modelist, head, list) {1043 m = &modelist->mode;1044 if (fb_mode_is_equal(m, &mode))1045 return m;1046 }1047 return NULL;1048}1049 1050/**1051 * fb_add_videomode - adds videomode entry to modelist1052 * @mode: videomode to add1053 * @head: struct list_head of modelist1054 *1055 * NOTES:1056 * Will only add unmatched mode entries1057 */1058int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)1059{1060 struct fb_modelist *modelist;1061 struct fb_videomode *m;1062 int found = 0;1063 1064 list_for_each_entry(modelist, head, list) {1065 m = &modelist->mode;1066 if (fb_mode_is_equal(m, mode)) {1067 found = 1;1068 break;1069 }1070 }1071 if (!found) {1072 modelist = kmalloc(sizeof(struct fb_modelist),1073 GFP_KERNEL);1074 1075 if (!modelist)1076 return -ENOMEM;1077 modelist->mode = *mode;1078 list_add(&modelist->list, head);1079 }1080 return 0;1081}1082 1083/**1084 * fb_delete_videomode - removed videomode entry from modelist1085 * @mode: videomode to remove1086 * @head: struct list_head of modelist1087 *1088 * NOTES:1089 * Will remove all matching mode entries1090 */1091void fb_delete_videomode(const struct fb_videomode *mode,1092 struct list_head *head)1093{1094 struct list_head *pos, *n;1095 struct fb_modelist *modelist;1096 struct fb_videomode *m;1097 1098 list_for_each_safe(pos, n, head) {1099 modelist = list_entry(pos, struct fb_modelist, list);1100 m = &modelist->mode;1101 if (fb_mode_is_equal(m, mode)) {1102 list_del(pos);1103 kfree(pos);1104 }1105 }1106}1107 1108/**1109 * fb_destroy_modelist - destroy modelist1110 * @head: struct list_head of modelist1111 */1112void fb_destroy_modelist(struct list_head *head)1113{1114 struct list_head *pos, *n;1115 1116 list_for_each_safe(pos, n, head) {1117 list_del(pos);1118 kfree(pos);1119 }1120}1121EXPORT_SYMBOL_GPL(fb_destroy_modelist);1122 1123/**1124 * fb_videomode_to_modelist - convert mode array to mode list1125 * @modedb: array of struct fb_videomode1126 * @num: number of entries in array1127 * @head: struct list_head of modelist1128 */1129void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,1130 struct list_head *head)1131{1132 int i;1133 1134 INIT_LIST_HEAD(head);1135 1136 for (i = 0; i < num; i++) {1137 if (fb_add_videomode(&modedb[i], head))1138 return;1139 }1140}1141 1142const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,1143 struct list_head *head)1144{1145 struct fb_modelist *modelist;1146 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;1147 int first = 0;1148 1149 if (!head->prev || !head->next || list_empty(head))1150 goto finished;1151 1152 /* get the first detailed mode and the very first mode */1153 list_for_each_entry(modelist, head, list) {1154 m = &modelist->mode;1155 1156 if (!first) {1157 m1 = m;1158 first = 1;1159 }1160 1161 if (m->flag & FB_MODE_IS_FIRST) {1162 md = m;1163 break;1164 }1165 }1166 1167 /* first detailed timing is preferred */1168 if (specs->misc & FB_MISC_1ST_DETAIL) {1169 best = md;1170 goto finished;1171 }1172 1173 /* find best mode based on display width and height */1174 if (specs->max_x && specs->max_y) {1175 struct fb_var_screeninfo var;1176 1177 memset(&var, 0, sizeof(struct fb_var_screeninfo));1178 var.xres = (specs->max_x * 7200)/254;1179 var.yres = (specs->max_y * 7200)/254;1180 m = fb_find_best_mode(&var, head);1181 if (m) {1182 best = m;1183 goto finished;1184 }1185 }1186 1187 /* use first detailed mode */1188 if (md) {1189 best = md;1190 goto finished;1191 }1192 1193 /* last resort, use the very first mode */1194 best = m1;1195finished:1196 return best;1197}1198EXPORT_SYMBOL(fb_find_best_display);1199 1200EXPORT_SYMBOL(fb_videomode_to_var);1201EXPORT_SYMBOL(fb_var_to_videomode);1202EXPORT_SYMBOL(fb_mode_is_equal);1203EXPORT_SYMBOL(fb_add_videomode);1204EXPORT_SYMBOL(fb_match_mode);1205EXPORT_SYMBOL(fb_find_best_mode);1206EXPORT_SYMBOL(fb_find_nearest_mode);1207EXPORT_SYMBOL(fb_videomode_to_modelist);1208EXPORT_SYMBOL(fb_find_mode);1209EXPORT_SYMBOL(fb_find_mode_cvt);1210