1/* 2 * linux/drivers/video/modedb.c -- Standard video mode database management 3 * 4 * Copyright (C) 1999 Geert Uytterhoeven 5 * 6 * 2001 - Documented with DocBook 7 * - Brad Douglas <brad@neruo.com> 8 * 9 * This file is subject to the terms and conditions of the GNU General Public 10 * License. See the file COPYING in the main directory of this archive for 11 * more details. 12 */ 13 14#include <linux/module.h> 15#include <linux/slab.h> 16#include <linux/fb.h> 17#include <linux/kernel.h> 18 19#undef DEBUG 20 21#define name_matches(v, s, l) \ 22 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l)) 23#define res_matches(v, x, y) \ 24 ((v).xres == (x) && (v).yres == (y)) 25 26#ifdef DEBUG 27#define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args) 28#else 29#define DPRINTK(fmt, args...) 30#endif 31 32const char *fb_mode_option; 33EXPORT_SYMBOL_GPL(fb_mode_option); 34 35 /* 36 * Standard video mode definitions (taken from XFree86) 37 */ 38 39static const struct fb_videomode modedb[] = { 40 { 41 /* 640x400 @ 70 Hz, 31.5 kHz hsync */ 42 NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 43 0, FB_VMODE_NONINTERLACED 44 }, { 45 /* 640x480 @ 60 Hz, 31.5 kHz hsync */ 46 NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 47 0, FB_VMODE_NONINTERLACED 48 }, { 49 /* 800x600 @ 56 Hz, 35.15 kHz hsync */ 50 NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 51 0, FB_VMODE_NONINTERLACED 52 }, { 53 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ 54 NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 55 0, FB_VMODE_INTERLACED 56 }, { 57 /* 640x400 @ 85 Hz, 37.86 kHz hsync */ 58 NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, 59 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 60 }, { 61 /* 640x480 @ 72 Hz, 36.5 kHz hsync */ 62 NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 63 0, FB_VMODE_NONINTERLACED 64 }, { 65 /* 640x480 @ 75 Hz, 37.50 kHz hsync */ 66 NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 67 0, FB_VMODE_NONINTERLACED 68 }, { 69 /* 800x600 @ 60 Hz, 37.8 kHz hsync */ 70 NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, 71 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 72 }, { 73 /* 640x480 @ 85 Hz, 43.27 kHz hsync */ 74 NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 75 0, FB_VMODE_NONINTERLACED 76 }, { 77 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ 78 NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 79 0, FB_VMODE_INTERLACED 80 }, { 81 /* 800x600 @ 72 Hz, 48.0 kHz hsync */ 82 NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 83 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 84 }, { 85 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ 86 NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 87 0, FB_VMODE_NONINTERLACED 88 }, { 89 /* 640x480 @ 100 Hz, 53.01 kHz hsync */ 90 NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 91 0, FB_VMODE_NONINTERLACED 92 }, { 93 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ 94 NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 95 0, FB_VMODE_NONINTERLACED 96 }, { 97 /* 800x600 @ 85 Hz, 55.84 kHz hsync */ 98 NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 99 0, FB_VMODE_NONINTERLACED 100 }, { 101 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ 102 NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 103 0, FB_VMODE_NONINTERLACED 104 }, { 105 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ 106 NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 107 0, FB_VMODE_INTERLACED 108 }, { 109 /* 800x600 @ 100 Hz, 64.02 kHz hsync */ 110 NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 111 0, FB_VMODE_NONINTERLACED 112 }, { 113 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ 114 NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 115 0, FB_VMODE_NONINTERLACED 116 }, { 117 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ 118 NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 119 0, FB_VMODE_NONINTERLACED 120 }, { 121 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ 122 NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 123 0, FB_VMODE_NONINTERLACED 124 }, { 125 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ 126 NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 127 0, FB_VMODE_NONINTERLACED 128 }, { 129 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ 130 NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, 131 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 132 }, { 133 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ 134 NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, 135 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 136 }, { 137 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ 138 NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 139 0, FB_VMODE_NONINTERLACED 140 }, { 141 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ 142 NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 143 0, FB_VMODE_NONINTERLACED 144 }, { 145 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ 146 NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 147 0, 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, FB_VMODE_NONINTERLACED 152 }, { 153 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ 154 NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 155 0, FB_VMODE_NONINTERLACED 156 }, { 157 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ 158 NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 159 0, FB_VMODE_NONINTERLACED 160 }, { 161 /* 1024x768 @ 100Hz, 80.21 kHz hsync */ 162 NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 163 0, FB_VMODE_NONINTERLACED 164 }, { 165 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ 166 NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 167 0, FB_VMODE_NONINTERLACED 168 }, { 169 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ 170 NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 171 0, FB_VMODE_NONINTERLACED 172 }, { 173 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ 174 NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 175 0, FB_VMODE_NONINTERLACED 176 }, { 177 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ 178 NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 179 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 180 }, { 181 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ 182 NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 183 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 184 }, { 185 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ 186 NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, 187 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 188 }, { 189 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ 190 NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, 191 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 192 }, { 193 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ 194 NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 195 0, FB_VMODE_NONINTERLACED 196 }, { 197 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ 198 NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, 199 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 200 }, { 201 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ 202 NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, 203 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 204 }, { 205 /* 512x384 @ 78 Hz, 31.50 kHz hsync */ 206 NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 207 0, FB_VMODE_NONINTERLACED 208 }, { 209 /* 512x384 @ 85 Hz, 34.38 kHz hsync */ 210 NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 211 0, FB_VMODE_NONINTERLACED 212 }, { 213 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ 214 NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 215 0, FB_VMODE_DOUBLE 216 }, { 217 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ 218 NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 219 0, FB_VMODE_DOUBLE 220 }, { 221 /* 320x240 @ 72 Hz, 36.5 kHz hsync */ 222 NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 223 0, FB_VMODE_DOUBLE 224 }, { 225 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ 226 NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 227 0, FB_VMODE_DOUBLE 228 }, { 229 /* 400x300 @ 60 Hz, 37.8 kHz hsync */ 230 NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 231 0, FB_VMODE_DOUBLE 232 }, { 233 /* 400x300 @ 72 Hz, 48.0 kHz hsync */ 234 NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 235 0, FB_VMODE_DOUBLE 236 }, { 237 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ 238 NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 239 0, FB_VMODE_DOUBLE 240 }, { 241 /* 480x300 @ 60 Hz, 37.8 kHz hsync */ 242 NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 243 0, FB_VMODE_DOUBLE 244 }, { 245 /* 480x300 @ 63 Hz, 39.6 kHz hsync */ 246 NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 247 0, FB_VMODE_DOUBLE 248 }, { 249 /* 480x300 @ 72 Hz, 48.0 kHz hsync */ 250 NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 251 0, FB_VMODE_DOUBLE 252 }, { 253 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ 254 NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, 255 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 256 FB_VMODE_NONINTERLACED 257 }, { 258 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ 259 NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, 260 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED 261 }, { 262 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ 263 NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 264 0, FB_VMODE_NONINTERLACED 265 }, { 266 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ 267 NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 268 0, FB_VMODE_NONINTERLACED 269 }, { 270 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 271 NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 272 0, FB_VMODE_INTERLACED 273 }, { 274 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 275 NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 276 0, FB_VMODE_INTERLACED 277 }, 278}; 279 280#ifdef CONFIG_FB_MODE_HELPERS 281const struct fb_videomode vesa_modes[] = { 282 /* 0 640x350-85 VESA */ 283 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 284 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 285 /* 1 640x400-85 VESA */ 286 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 287 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 288 /* 2 720x400-85 VESA */ 289 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 290 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 291 /* 3 640x480-60 VESA */ 292 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 293 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 294 /* 4 640x480-72 VESA */ 295 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 296 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 297 /* 5 640x480-75 VESA */ 298 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 299 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 300 /* 6 640x480-85 VESA */ 301 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 302 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 303 /* 7 800x600-56 VESA */ 304 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 305 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 306 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 307 /* 8 800x600-60 VESA */ 308 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 309 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 310 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 311 /* 9 800x600-72 VESA */ 312 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 313 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 314 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 315 /* 10 800x600-75 VESA */ 316 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 317 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 318 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 319 /* 11 800x600-85 VESA */ 320 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 321 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 322 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 323 /* 12 1024x768i-43 VESA */ 324 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 326 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 327 /* 13 1024x768-60 VESA */ 328 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 329 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 330 /* 14 1024x768-70 VESA */ 331 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 332 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 333 /* 15 1024x768-75 VESA */ 334 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 335 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 336 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 337 /* 16 1024x768-85 VESA */ 338 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 339 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 340 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 341 /* 17 1152x864-75 VESA */ 342 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 343 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 344 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 345 /* 18 1280x960-60 VESA */ 346 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 347 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 348 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 349 /* 19 1280x960-85 VESA */ 350 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 351 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 352 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 353 /* 20 1280x1024-60 VESA */ 354 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 355 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 356 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 357 /* 21 1280x1024-75 VESA */ 358 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 359 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 360 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 361 /* 22 1280x1024-85 VESA */ 362 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 363 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 364 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 365 /* 23 1600x1200-60 VESA */ 366 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 367 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 368 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 369 /* 24 1600x1200-65 VESA */ 370 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 371 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 372 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 373 /* 25 1600x1200-70 VESA */ 374 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 375 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 376 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 377 /* 26 1600x1200-75 VESA */ 378 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 379 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 380 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 381 /* 27 1600x1200-85 VESA */ 382 { NULL, 85, 1600, 1200, 4357, 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 /* 28 1792x1344-60 VESA */ 386 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 387 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 388 /* 29 1792x1344-75 VESA */ 389 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 390 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 391 /* 30 1856x1392-60 VESA */ 392 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 393 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 394 /* 31 1856x1392-75 VESA */ 395 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 396 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 397 /* 32 1920x1440-60 VESA */ 398 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 399 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 400 /* 33 1920x1440-75 VESA */ 401 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 402 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 403}; 404EXPORT_SYMBOL(vesa_modes); 405#endif /* CONFIG_FB_MODE_HELPERS */ 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 420static 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 * 467 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or 468 * <name>[-<bpp>][@<refresh>] 469 * 470 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 471 * <name> a string. 472 * 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 * 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 492int 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; 503 dbsize = ARRAY_SIZE(modedb); 504 } 505 506 if (!default_mode) 507 default_mode = &db[0]; 508 509 if (!default_bpp) 510 default_bpp = 8; 511 512 /* Did the user specify a video mode? */ 513 if (!mode_option) 514 mode_option = fb_mode_option; 515 if (mode_option) { 516 const char *name = mode_option; 517 unsigned int namelen = strlen(name); 518 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 519 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 520 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; 521 u32 best, diff, tdiff; 522 523 for (i = namelen-1; i >= 0; i--) { 524 switch (name[i]) { 525 case '@': 526 namelen = i; 527 if (!refresh_specified && !bpp_specified && 528 !yres_specified) { 529 refresh = simple_strtol(&name[i+1], NULL, 10); 530 refresh_specified = 1; 531 if (cvt || rb) 532 cvt = 0; 533 } else 534 goto done; 535 break; 536 case '-': 537 namelen = i; 538 if (!bpp_specified && !yres_specified) { 539 bpp = simple_strtol(&name[i+1], NULL, 10); 540 bpp_specified = 1; 541 if (cvt || rb) 542 cvt = 0; 543 } else 544 goto done; 545 break; 546 case 'x': 547 if (!yres_specified) { 548 yres = simple_strtol(&name[i+1], NULL, 10); 549 yres_specified = 1; 550 } else 551 goto done; 552 break; 553 case '0' ... '9': 554 break; 555 case 'M': 556 if (!yres_specified) 557 cvt = 1; 558 break; 559 case 'R': 560 if (!cvt) 561 rb = 1; 562 break; 563 case 'm': 564 if (!cvt) 565 margins = 1; 566 break; 567 case 'i': 568 if (!cvt) 569 interlace = 1; 570 break; 571 default: 572 goto done; 573 } 574 } 575 if (i < 0 && yres_specified) { 576 xres = simple_strtol(name, NULL, 10); 577 res_specified = 1; 578 } 579done: 580 if (cvt) { 581 struct fb_videomode cvt_mode; 582 int ret; 583 584 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 585 (refresh) ? refresh : 60, (rb) ? " reduced blanking" : 586 "", (margins) ? " with margins" : "", (interlace) ? 587 " interlaced" : ""); 588 589 memset(&cvt_mode, 0, sizeof(cvt_mode)); 590 cvt_mode.xres = xres; 591 cvt_mode.yres = yres; 592 cvt_mode.refresh = (refresh) ? refresh : 60; 593 594 if (interlace) 595 cvt_mode.vmode |= FB_VMODE_INTERLACED; 596 else 597 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 598 599 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 600 601 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 602 DPRINTK("modedb CVT: CVT mode ok\n"); 603 return 1; 604 } 605 606 DPRINTK("CVT mode invalid, getting mode from database\n"); 607 } 608 609 DPRINTK("Trying specified video mode%s %ix%i\n", 610 refresh_specified ? "" : " (ignoring refresh rate)", xres, yres); 611 612 if (!refresh_specified) { 613 /* 614 * If the caller has provided a custom mode database and a 615 * valid monspecs structure, we look for the mode with the 616 * highest refresh rate. Otherwise we play it safe it and 617 * try to find a mode with a refresh rate closest to the 618 * standard 60 Hz. 619 */ 620 if (db != modedb && 621 info->monspecs.vfmin && info->monspecs.vfmax && 622 info->monspecs.hfmin && info->monspecs.hfmax && 623 info->monspecs.dclkmax) { 624 refresh = 1000; 625 } else { 626 refresh = 60; 627 } 628 } 629 630 diff = -1; 631 best = -1; 632 for (i = 0; i < dbsize; i++) { 633 if ((name_matches(db[i], name, namelen) || 634 (res_specified && res_matches(db[i], xres, yres))) && 635 !fb_try_mode(var, info, &db[i], bpp)) { 636 if (refresh_specified && db[i].refresh == refresh) { 637 return 1; 638 } else { 639 if (abs(db[i].refresh - refresh) < diff) { 640 diff = abs(db[i].refresh - refresh); 641 best = i; 642 } 643 } 644 } 645 } 646 if (best != -1) { 647 fb_try_mode(var, info, &db[best], bpp); 648 return (refresh_specified) ? 2 : 1; 649 } 650 651 diff = 2 * (xres + yres); 652 best = -1; 653 DPRINTK("Trying best-fit modes\n"); 654 for (i = 0; i < dbsize; i++) { 655 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 656 if (!fb_try_mode(var, info, &db[i], bpp)) { 657 tdiff = abs(db[i].xres - xres) + 658 abs(db[i].yres - yres); 659 660 /* 661 * Penalize modes with resolutions smaller 662 * than requested. 663 */ 664 if (xres > db[i].xres || yres > db[i].yres) 665 tdiff += xres + yres; 666 667 if (diff > tdiff) { 668 diff = tdiff; 669 best = i; 670 } 671 } 672 } 673 if (best != -1) { 674 fb_try_mode(var, info, &db[best], bpp); 675 return 5; 676 } 677 } 678 679 DPRINTK("Trying default video mode\n"); 680 if (!fb_try_mode(var, info, default_mode, default_bpp)) 681 return 3; 682 683 DPRINTK("Trying all modes\n"); 684 for (i = 0; i < dbsize; i++) 685 if (!fb_try_mode(var, info, &db[i], default_bpp)) 686 return 4; 687 688 DPRINTK("No valid mode found\n"); 689 return 0; 690} 691 692/** 693 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 694 * @mode: pointer to struct fb_videomode 695 * @var: pointer to struct fb_var_screeninfo 696 */ 697void fb_var_to_videomode(struct fb_videomode *mode, 698 const struct fb_var_screeninfo *var) 699{ 700 u32 pixclock, hfreq, htotal, vtotal; 701 702 mode->name = NULL; 703 mode->xres = var->xres; 704 mode->yres = var->yres; 705 mode->pixclock = var->pixclock; 706 mode->hsync_len = var->hsync_len; 707 mode->vsync_len = var->vsync_len; 708 mode->left_margin = var->left_margin; 709 mode->right_margin = var->right_margin; 710 mode->upper_margin = var->upper_margin; 711 mode->lower_margin = var->lower_margin; 712 mode->sync = var->sync; 713 mode->vmode = var->vmode & FB_VMODE_MASK; 714 mode->flag = FB_MODE_IS_FROM_VAR; 715 mode->refresh = 0; 716 717 if (!var->pixclock) 718 return; 719 720 pixclock = PICOS2KHZ(var->pixclock) * 1000; 721 722 htotal = var->xres + var->right_margin + var->hsync_len + 723 var->left_margin; 724 vtotal = var->yres + var->lower_margin + var->vsync_len + 725 var->upper_margin; 726 727 if (var->vmode & FB_VMODE_INTERLACED) 728 vtotal /= 2; 729 if (var->vmode & FB_VMODE_DOUBLE) 730 vtotal *= 2; 731 732 hfreq = pixclock/htotal; 733 mode->refresh = hfreq/vtotal; 734} 735 736/** 737 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 738 * @var: pointer to struct fb_var_screeninfo 739 * @mode: pointer to struct fb_videomode 740 */ 741void fb_videomode_to_var(struct fb_var_screeninfo *var, 742 const struct fb_videomode *mode) 743{ 744 var->xres = mode->xres; 745 var->yres = mode->yres; 746 var->xres_virtual = mode->xres; 747 var->yres_virtual = mode->yres; 748 var->xoffset = 0; 749 var->yoffset = 0; 750 var->pixclock = mode->pixclock; 751 var->left_margin = mode->left_margin; 752 var->right_margin = mode->right_margin; 753 var->upper_margin = mode->upper_margin; 754 var->lower_margin = mode->lower_margin; 755 var->hsync_len = mode->hsync_len; 756 var->vsync_len = mode->vsync_len; 757 var->sync = mode->sync; 758 var->vmode = mode->vmode & FB_VMODE_MASK; 759} 760 761/** 762 * fb_mode_is_equal - compare 2 videomodes 763 * @mode1: first videomode 764 * @mode2: second videomode 765 * 766 * RETURNS: 767 * 1 if equal, 0 if not 768 */ 769int fb_mode_is_equal(const struct fb_videomode *mode1, 770 const struct fb_videomode *mode2) 771{ 772 return (mode1->xres == mode2->xres && 773 mode1->yres == mode2->yres && 774 mode1->pixclock == mode2->pixclock && 775 mode1->hsync_len == mode2->hsync_len && 776 mode1->vsync_len == mode2->vsync_len && 777 mode1->left_margin == mode2->left_margin && 778 mode1->right_margin == mode2->right_margin && 779 mode1->upper_margin == mode2->upper_margin && 780 mode1->lower_margin == mode2->lower_margin && 781 mode1->sync == mode2->sync && 782 mode1->vmode == mode2->vmode); 783} 784 785/** 786 * fb_find_best_mode - find best matching videomode 787 * @var: pointer to struct fb_var_screeninfo 788 * @head: pointer to struct list_head of modelist 789 * 790 * RETURNS: 791 * struct fb_videomode, NULL if none found 792 * 793 * IMPORTANT: 794 * This function assumes that all modelist entries in 795 * info->modelist are valid. 796 * 797 * NOTES: 798 * Finds best matching videomode which has an equal or greater dimension than 799 * var->xres and var->yres. If more than 1 videomode is found, will return 800 * the videomode with the highest refresh rate 801 */ 802const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 803 struct list_head *head) 804{ 805 struct list_head *pos; 806 struct fb_modelist *modelist; 807 struct fb_videomode *mode, *best = NULL; 808 u32 diff = -1; 809 810 list_for_each(pos, head) { 811 u32 d; 812 813 modelist = list_entry(pos, struct fb_modelist, list); 814 mode = &modelist->mode; 815 816 if (mode->xres >= var->xres && mode->yres >= var->yres) { 817 d = (mode->xres - var->xres) + 818 (mode->yres - var->yres); 819 if (diff > d) { 820 diff = d; 821 best = mode; 822 } else if (diff == d && best && 823 mode->refresh > best->refresh) 824 best = mode; 825 } 826 } 827 return best; 828} 829 830/** 831 * fb_find_nearest_mode - find closest videomode 832 * 833 * @mode: pointer to struct fb_videomode 834 * @head: pointer to modelist 835 * 836 * Finds best matching videomode, smaller or greater in dimension. 837 * If more than 1 videomode is found, will return the videomode with 838 * the closest refresh rate. 839 */ 840const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 841 struct list_head *head) 842{ 843 struct list_head *pos; 844 struct fb_modelist *modelist; 845 struct fb_videomode *cmode, *best = NULL; 846 u32 diff = -1, diff_refresh = -1; 847 848 list_for_each(pos, head) { 849 u32 d; 850 851 modelist = list_entry(pos, struct fb_modelist, list); 852 cmode = &modelist->mode; 853 854 d = abs(cmode->xres - mode->xres) + 855 abs(cmode->yres - mode->yres); 856 if (diff > d) { 857 diff = d; 858 best = cmode; 859 } else if (diff == d) { 860 d = abs(cmode->refresh - mode->refresh); 861 if (diff_refresh > d) { 862 diff_refresh = d; 863 best = cmode; 864 } 865 } 866 } 867 868 return best; 869} 870 871/** 872 * fb_match_mode - find a videomode which exactly matches the timings in var 873 * @var: pointer to struct fb_var_screeninfo 874 * @head: pointer to struct list_head of modelist 875 * 876 * RETURNS: 877 * struct fb_videomode, NULL if none found 878 */ 879const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 880 struct list_head *head) 881{ 882 struct list_head *pos; 883 struct fb_modelist *modelist; 884 struct fb_videomode *m, mode; 885 886 fb_var_to_videomode(&mode, var); 887 list_for_each(pos, head) { 888 modelist = list_entry(pos, struct fb_modelist, list); 889 m = &modelist->mode; 890 if (fb_mode_is_equal(m, &mode)) 891 return m; 892 } 893 return NULL; 894} 895 896/** 897 * fb_add_videomode - adds videomode entry to modelist 898 * @mode: videomode to add 899 * @head: struct list_head of modelist 900 * 901 * NOTES: 902 * Will only add unmatched mode entries 903 */ 904int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 905{ 906 struct list_head *pos; 907 struct fb_modelist *modelist; 908 struct fb_videomode *m; 909 int found = 0; 910 911 list_for_each(pos, head) { 912 modelist = list_entry(pos, struct fb_modelist, list); 913 m = &modelist->mode; 914 if (fb_mode_is_equal(m, mode)) { 915 found = 1; 916 break; 917 } 918 } 919 if (!found) { 920 modelist = kmalloc(sizeof(struct fb_modelist), 921 GFP_KERNEL); 922 923 if (!modelist) 924 return -ENOMEM; 925 modelist->mode = *mode; 926 list_add(&modelist->list, head); 927 } 928 return 0; 929} 930 931/** 932 * fb_delete_videomode - removed videomode entry from modelist 933 * @mode: videomode to remove 934 * @head: struct list_head of modelist 935 * 936 * NOTES: 937 * Will remove all matching mode entries 938 */ 939void fb_delete_videomode(const struct fb_videomode *mode, 940 struct list_head *head) 941{ 942 struct list_head *pos, *n; 943 struct fb_modelist *modelist; 944 struct fb_videomode *m; 945 946 list_for_each_safe(pos, n, head) { 947 modelist = list_entry(pos, struct fb_modelist, list); 948 m = &modelist->mode; 949 if (fb_mode_is_equal(m, mode)) { 950 list_del(pos); 951 kfree(pos); 952 } 953 } 954} 955 956/** 957 * fb_destroy_modelist - destroy modelist 958 * @head: struct list_head of modelist 959 */ 960void fb_destroy_modelist(struct list_head *head) 961{ 962 struct list_head *pos, *n; 963 964 list_for_each_safe(pos, n, head) { 965 list_del(pos); 966 kfree(pos); 967 } 968} 969EXPORT_SYMBOL_GPL(fb_destroy_modelist); 970 971/** 972 * fb_videomode_to_modelist - convert mode array to mode list 973 * @modedb: array of struct fb_videomode 974 * @num: number of entries in array 975 * @head: struct list_head of modelist 976 */ 977void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 978 struct list_head *head) 979{ 980 int i; 981 982 INIT_LIST_HEAD(head); 983 984 for (i = 0; i < num; i++) { 985 if (fb_add_videomode(&modedb[i], head)) 986 return; 987 } 988} 989 990const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 991 struct list_head *head) 992{ 993 struct list_head *pos; 994 struct fb_modelist *modelist; 995 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 996 int first = 0; 997 998 if (!head->prev || !head->next || list_empty(head)) 999 goto finished; 1000 1001 /* get the first detailed mode and the very first mode */ 1002 list_for_each(pos, head) { 1003 modelist = list_entry(pos, struct fb_modelist, list); 1004 m = &modelist->mode; 1005 1006 if (!first) { 1007 m1 = m; 1008 first = 1; 1009 } 1010 1011 if (m->flag & FB_MODE_IS_FIRST) { 1012 md = m; 1013 break; 1014 } 1015 } 1016 1017 /* first detailed timing is preferred */ 1018 if (specs->misc & FB_MISC_1ST_DETAIL) { 1019 best = md; 1020 goto finished; 1021 } 1022 1023 /* find best mode based on display width and height */ 1024 if (specs->max_x && specs->max_y) { 1025 struct fb_var_screeninfo var; 1026 1027 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1028 var.xres = (specs->max_x * 7200)/254; 1029 var.yres = (specs->max_y * 7200)/254; 1030 m = fb_find_best_mode(&var, head); 1031 if (m) { 1032 best = m; 1033 goto finished; 1034 } 1035 } 1036 1037 /* use first detailed mode */ 1038 if (md) { 1039 best = md; 1040 goto finished; 1041 } 1042 1043 /* last resort, use the very first mode */ 1044 best = m1; 1045finished: 1046 return best; 1047} 1048EXPORT_SYMBOL(fb_find_best_display); 1049 1050EXPORT_SYMBOL(fb_videomode_to_var); 1051EXPORT_SYMBOL(fb_var_to_videomode); 1052EXPORT_SYMBOL(fb_mode_is_equal); 1053EXPORT_SYMBOL(fb_add_videomode); 1054EXPORT_SYMBOL(fb_match_mode); 1055EXPORT_SYMBOL(fb_find_best_mode); 1056EXPORT_SYMBOL(fb_find_nearest_mode); 1057EXPORT_SYMBOL(fb_videomode_to_modelist); 1058EXPORT_SYMBOL(fb_find_mode); 1059