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 32 /* 33 * Standard video mode definitions (taken from XFree86) 34 */ 35 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, 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 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ 261 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, 262 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 263 FB_VMODE_NONINTERLACED }, 264 265 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ 266 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, 267 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 268 FB_VMODE_NONINTERLACED }, 269 270 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ 271 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0, 272 FB_VMODE_NONINTERLACED }, 273 274 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ 275 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0, 276 FB_VMODE_NONINTERLACED }, 277 278 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 279 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0, 280 FB_VMODE_INTERLACED }, 281 282 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 283 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0, 284 FB_VMODE_INTERLACED }, 285 286 /* 864x480 @ 60 Hz, 35.15 kHz hsync */ 287 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0, 288 0, FB_VMODE_NONINTERLACED }, 289 }; 290 291 #ifdef CONFIG_FB_MODE_HELPERS 292 const struct fb_videomode vesa_modes[] = { 293 /* 0 640x350-85 VESA */ 294 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 295 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 296 /* 1 640x400-85 VESA */ 297 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 298 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 299 /* 2 720x400-85 VESA */ 300 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 301 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 302 /* 3 640x480-60 VESA */ 303 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 304 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 305 /* 4 640x480-72 VESA */ 306 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 307 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 308 /* 5 640x480-75 VESA */ 309 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 310 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 311 /* 6 640x480-85 VESA */ 312 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 313 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 314 /* 7 800x600-56 VESA */ 315 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 316 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 317 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 318 /* 8 800x600-60 VESA */ 319 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 320 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 321 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 322 /* 9 800x600-72 VESA */ 323 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 324 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 325 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 326 /* 10 800x600-75 VESA */ 327 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 328 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 329 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 330 /* 11 800x600-85 VESA */ 331 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 332 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 333 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 334 /* 12 1024x768i-43 VESA */ 335 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 336 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 337 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 338 /* 13 1024x768-60 VESA */ 339 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 340 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 341 /* 14 1024x768-70 VESA */ 342 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 343 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 344 /* 15 1024x768-75 VESA */ 345 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 346 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 347 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 348 /* 16 1024x768-85 VESA */ 349 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 350 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 351 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 352 /* 17 1152x864-75 VESA */ 353 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 354 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 355 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 356 /* 18 1280x960-60 VESA */ 357 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 358 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 359 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 360 /* 19 1280x960-85 VESA */ 361 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 362 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 363 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 364 /* 20 1280x1024-60 VESA */ 365 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 366 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 367 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 368 /* 21 1280x1024-75 VESA */ 369 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 370 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 371 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 372 /* 22 1280x1024-85 VESA */ 373 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 374 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 375 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 376 /* 23 1600x1200-60 VESA */ 377 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 378 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 379 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 380 /* 24 1600x1200-65 VESA */ 381 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 382 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 383 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 384 /* 25 1600x1200-70 VESA */ 385 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 386 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 387 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 388 /* 26 1600x1200-75 VESA */ 389 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 390 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 391 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 392 /* 27 1600x1200-85 VESA */ 393 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, 394 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 395 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 396 /* 28 1792x1344-60 VESA */ 397 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 398 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 399 /* 29 1792x1344-75 VESA */ 400 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 401 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 402 /* 30 1856x1392-60 VESA */ 403 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 404 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 405 /* 31 1856x1392-75 VESA */ 406 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 407 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 408 /* 32 1920x1440-60 VESA */ 409 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 410 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 411 /* 33 1920x1440-75 VESA */ 412 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 413 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 414 /* 34 1920x1200-60 RB VESA */ 415 { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6, 416 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 417 /* 35 1920x1200-60 VESA */ 418 { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6, 419 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 420 /* 36 1920x1200-75 VESA */ 421 { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6, 422 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 423 /* 37 1920x1200-85 VESA */ 424 { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6, 425 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 426 /* 38 2560x1600-60 RB VESA */ 427 { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6, 428 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 429 /* 39 2560x1600-60 VESA */ 430 { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6, 431 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 432 /* 40 2560x1600-75 VESA */ 433 { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6, 434 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 435 /* 41 2560x1600-85 VESA */ 436 { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6, 437 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 438 /* 42 2560x1600-120 RB VESA */ 439 { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6, 440 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 441 }; 442 EXPORT_SYMBOL(vesa_modes); 443 444 const struct dmt_videomode dmt_modes[DMT_SIZE] = { 445 { 0x01, 0x0000, 0x000000, &vesa_modes[0] }, 446 { 0x02, 0x3119, 0x000000, &vesa_modes[1] }, 447 { 0x03, 0x0000, 0x000000, &vesa_modes[2] }, 448 { 0x04, 0x3140, 0x000000, &vesa_modes[3] }, 449 { 0x05, 0x314c, 0x000000, &vesa_modes[4] }, 450 { 0x06, 0x314f, 0x000000, &vesa_modes[5] }, 451 { 0x07, 0x3159, 0x000000, &vesa_modes[6] }, 452 { 0x08, 0x0000, 0x000000, &vesa_modes[7] }, 453 { 0x09, 0x4540, 0x000000, &vesa_modes[8] }, 454 { 0x0a, 0x454c, 0x000000, &vesa_modes[9] }, 455 { 0x0b, 0x454f, 0x000000, &vesa_modes[10] }, 456 { 0x0c, 0x4559, 0x000000, &vesa_modes[11] }, 457 { 0x0d, 0x0000, 0x000000, NULL }, 458 { 0x0e, 0x0000, 0x000000, NULL }, 459 { 0x0f, 0x0000, 0x000000, &vesa_modes[12] }, 460 { 0x10, 0x6140, 0x000000, &vesa_modes[13] }, 461 { 0x11, 0x614a, 0x000000, &vesa_modes[14] }, 462 { 0x12, 0x614f, 0x000000, &vesa_modes[15] }, 463 { 0x13, 0x6159, 0x000000, &vesa_modes[16] }, 464 { 0x14, 0x0000, 0x000000, NULL }, 465 { 0x15, 0x714f, 0x000000, &vesa_modes[17] }, 466 { 0x16, 0x0000, 0x7f1c21, NULL }, 467 { 0x17, 0x0000, 0x7f1c28, NULL }, 468 { 0x18, 0x0000, 0x7f1c44, NULL }, 469 { 0x19, 0x0000, 0x7f1c62, NULL }, 470 { 0x1a, 0x0000, 0x000000, NULL }, 471 { 0x1b, 0x0000, 0x8f1821, NULL }, 472 { 0x1c, 0x8100, 0x8f1828, NULL }, 473 { 0x1d, 0x810f, 0x8f1844, NULL }, 474 { 0x1e, 0x8119, 0x8f1862, NULL }, 475 { 0x1f, 0x0000, 0x000000, NULL }, 476 { 0x20, 0x8140, 0x000000, &vesa_modes[18] }, 477 { 0x21, 0x8159, 0x000000, &vesa_modes[19] }, 478 { 0x22, 0x0000, 0x000000, NULL }, 479 { 0x23, 0x8180, 0x000000, &vesa_modes[20] }, 480 { 0x24, 0x818f, 0x000000, &vesa_modes[21] }, 481 { 0x25, 0x8199, 0x000000, &vesa_modes[22] }, 482 { 0x26, 0x0000, 0x000000, NULL }, 483 { 0x27, 0x0000, 0x000000, NULL }, 484 { 0x28, 0x0000, 0x000000, NULL }, 485 { 0x29, 0x0000, 0x0c2021, NULL }, 486 { 0x2a, 0x9040, 0x0c2028, NULL }, 487 { 0x2b, 0x904f, 0x0c2044, NULL }, 488 { 0x2c, 0x9059, 0x0c2062, NULL }, 489 { 0x2d, 0x0000, 0x000000, NULL }, 490 { 0x2e, 0x9500, 0xc11821, NULL }, 491 { 0x2f, 0x9500, 0xc11828, NULL }, 492 { 0x30, 0x950f, 0xc11844, NULL }, 493 { 0x31, 0x9519, 0xc11868, NULL }, 494 { 0x32, 0x0000, 0x000000, NULL }, 495 { 0x33, 0xa940, 0x000000, &vesa_modes[23] }, 496 { 0x34, 0xa945, 0x000000, &vesa_modes[24] }, 497 { 0x35, 0xa94a, 0x000000, &vesa_modes[25] }, 498 { 0x36, 0xa94f, 0x000000, &vesa_modes[26] }, 499 { 0x37, 0xa959, 0x000000, &vesa_modes[27] }, 500 { 0x38, 0x0000, 0x000000, NULL }, 501 { 0x39, 0x0000, 0x0c2821, NULL }, 502 { 0x3a, 0xb300, 0x0c2828, NULL }, 503 { 0x3b, 0xb30f, 0x0c2844, NULL }, 504 { 0x3c, 0xb319, 0x0c2868, NULL }, 505 { 0x3d, 0x0000, 0x000000, NULL }, 506 { 0x3e, 0xc140, 0x000000, &vesa_modes[28] }, 507 { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] }, 508 { 0x40, 0x0000, 0x000000, NULL}, 509 { 0x41, 0xc940, 0x000000, &vesa_modes[30] }, 510 { 0x42, 0xc94f, 0x000000, &vesa_modes[31] }, 511 { 0x43, 0x0000, 0x000000, NULL }, 512 { 0x44, 0x0000, 0x572821, &vesa_modes[34] }, 513 { 0x45, 0xd100, 0x572828, &vesa_modes[35] }, 514 { 0x46, 0xd10f, 0x572844, &vesa_modes[36] }, 515 { 0x47, 0xd119, 0x572862, &vesa_modes[37] }, 516 { 0x48, 0x0000, 0x000000, NULL }, 517 { 0x49, 0xd140, 0x000000, &vesa_modes[32] }, 518 { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] }, 519 { 0x4b, 0x0000, 0x000000, NULL }, 520 { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] }, 521 { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] }, 522 { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] }, 523 { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] }, 524 { 0x50, 0x0000, 0x000000, &vesa_modes[42] }, 525 }; 526 EXPORT_SYMBOL(dmt_modes); 527 #endif /* CONFIG_FB_MODE_HELPERS */ 528 529 /** 530 * fb_try_mode - test a video mode 531 * @var: frame buffer user defined part of display 532 * @info: frame buffer info structure 533 * @mode: frame buffer video mode structure 534 * @bpp: color depth in bits per pixel 535 * 536 * Tries a video mode to test it's validity for device @info. 537 * 538 * Returns 1 on success. 539 * 540 */ 541 542 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, 543 const struct fb_videomode *mode, unsigned int bpp) 544 { 545 int err = 0; 546 547 DPRINTK("Trying mode %s %dx%d-%d@%d\n", 548 mode->name ? mode->name : "noname", 549 mode->xres, mode->yres, bpp, mode->refresh); 550 var->xres = mode->xres; 551 var->yres = mode->yres; 552 var->xres_virtual = mode->xres; 553 var->yres_virtual = mode->yres; 554 var->xoffset = 0; 555 var->yoffset = 0; 556 var->bits_per_pixel = bpp; 557 var->activate |= FB_ACTIVATE_TEST; 558 var->pixclock = mode->pixclock; 559 var->left_margin = mode->left_margin; 560 var->right_margin = mode->right_margin; 561 var->upper_margin = mode->upper_margin; 562 var->lower_margin = mode->lower_margin; 563 var->hsync_len = mode->hsync_len; 564 var->vsync_len = mode->vsync_len; 565 var->sync = mode->sync; 566 var->vmode = mode->vmode; 567 if (info->fbops->fb_check_var) 568 err = info->fbops->fb_check_var(var, info); 569 var->activate &= ~FB_ACTIVATE_TEST; 570 return err; 571 } 572 573 /** 574 * fb_find_mode - finds a valid video mode 575 * @var: frame buffer user defined part of display 576 * @info: frame buffer info structure 577 * @mode_option: string video mode to find 578 * @db: video mode database 579 * @dbsize: size of @db 580 * @default_mode: default video mode to fall back to 581 * @default_bpp: default color depth in bits per pixel 582 * 583 * Finds a suitable video mode, starting with the specified mode 584 * in @mode_option with fallback to @default_mode. If 585 * @default_mode fails, all modes in the video mode database will 586 * be tried. 587 * 588 * Valid mode specifiers for @mode_option:: 589 * 590 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m] 591 * 592 * or :: 593 * 594 * <name>[-<bpp>][@<refresh>] 595 * 596 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 597 * <name> a string. 598 * 599 * If 'M' is present after yres (and before refresh/bpp if present), 600 * the function will compute the timings using VESA(tm) Coordinated 601 * Video Timings (CVT). If 'R' is present after 'M', will compute with 602 * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute 603 * interlaced or progressive mode. If 'm' is present, add margins equal 604 * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char 605 * 'i', 'p' and 'm' must be after 'M' and 'R'. Example:: 606 * 607 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. 608 * 609 * NOTE: The passed struct @var is _not_ cleared! This allows you 610 * to supply values for e.g. the grayscale and accel_flags fields. 611 * 612 * Returns zero for failure, 1 if using specified @mode_option, 613 * 2 if using specified @mode_option with an ignored refresh rate, 614 * 3 if default mode is used, 4 if fall back to any valid mode. 615 */ 616 617 int fb_find_mode(struct fb_var_screeninfo *var, 618 struct fb_info *info, const char *mode_option, 619 const struct fb_videomode *db, unsigned int dbsize, 620 const struct fb_videomode *default_mode, 621 unsigned int default_bpp) 622 { 623 int i; 624 625 /* Set up defaults */ 626 if (!db) { 627 db = modedb; 628 dbsize = ARRAY_SIZE(modedb); 629 } 630 631 if (!default_mode) 632 default_mode = &db[0]; 633 634 if (!default_bpp) 635 default_bpp = 8; 636 637 /* Did the user specify a video mode? */ 638 if (!mode_option) 639 mode_option = fb_mode_option; 640 if (mode_option) { 641 const char *name = mode_option; 642 unsigned int namelen = strlen(name); 643 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 644 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 645 int yres_specified = 0, cvt = 0, rb = 0; 646 int interlace_specified = 0, interlace = 0; 647 int margins = 0; 648 u32 best, diff, tdiff; 649 650 for (i = namelen-1; i >= 0; i--) { 651 switch (name[i]) { 652 case '@': 653 namelen = i; 654 if (!refresh_specified && !bpp_specified && 655 !yres_specified) { 656 refresh = simple_strtol(&name[i+1], NULL, 657 10); 658 refresh_specified = 1; 659 if (cvt || rb) 660 cvt = 0; 661 } else 662 goto done; 663 break; 664 case '-': 665 namelen = i; 666 if (!bpp_specified && !yres_specified) { 667 bpp = simple_strtol(&name[i+1], NULL, 668 10); 669 bpp_specified = 1; 670 if (cvt || rb) 671 cvt = 0; 672 } else 673 goto done; 674 break; 675 case 'x': 676 if (!yres_specified) { 677 yres = simple_strtol(&name[i+1], NULL, 678 10); 679 yres_specified = 1; 680 } else 681 goto done; 682 break; 683 case '0' ... '9': 684 break; 685 case 'M': 686 if (!yres_specified) 687 cvt = 1; 688 break; 689 case 'R': 690 if (!cvt) 691 rb = 1; 692 break; 693 case 'm': 694 if (!cvt) 695 margins = 1; 696 break; 697 case 'p': 698 if (!cvt) { 699 interlace = 0; 700 interlace_specified = 1; 701 } 702 break; 703 case 'i': 704 if (!cvt) { 705 interlace = 1; 706 interlace_specified = 1; 707 } 708 break; 709 default: 710 goto done; 711 } 712 } 713 if (i < 0 && yres_specified) { 714 xres = simple_strtol(name, NULL, 10); 715 res_specified = 1; 716 } 717 done: 718 if (cvt) { 719 struct fb_videomode cvt_mode; 720 int ret; 721 722 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 723 (refresh) ? refresh : 60, 724 (rb) ? " reduced blanking" : "", 725 (margins) ? " with margins" : "", 726 (interlace) ? " interlaced" : ""); 727 728 memset(&cvt_mode, 0, sizeof(cvt_mode)); 729 cvt_mode.xres = xres; 730 cvt_mode.yres = yres; 731 cvt_mode.refresh = (refresh) ? refresh : 60; 732 733 if (interlace) 734 cvt_mode.vmode |= FB_VMODE_INTERLACED; 735 else 736 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 737 738 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 739 740 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 741 DPRINTK("modedb CVT: CVT mode ok\n"); 742 return 1; 743 } 744 745 DPRINTK("CVT mode invalid, getting mode from database\n"); 746 } 747 748 DPRINTK("Trying specified video mode%s %ix%i\n", 749 refresh_specified ? "" : " (ignoring refresh rate)", 750 xres, yres); 751 752 if (!refresh_specified) { 753 /* 754 * If the caller has provided a custom mode database and 755 * a valid monspecs structure, we look for the mode with 756 * the highest refresh rate. Otherwise we play it safe 757 * it and try to find a mode with a refresh rate closest 758 * to the standard 60 Hz. 759 */ 760 if (db != modedb && 761 info->monspecs.vfmin && info->monspecs.vfmax && 762 info->monspecs.hfmin && info->monspecs.hfmax && 763 info->monspecs.dclkmax) { 764 refresh = 1000; 765 } else { 766 refresh = 60; 767 } 768 } 769 770 diff = -1; 771 best = -1; 772 for (i = 0; i < dbsize; i++) { 773 if ((name_matches(db[i], name, namelen) || 774 (res_specified && res_matches(db[i], xres, yres))) && 775 !fb_try_mode(var, info, &db[i], bpp)) { 776 const int db_interlace = (db[i].vmode & 777 FB_VMODE_INTERLACED ? 1 : 0); 778 int score = abs(db[i].refresh - refresh); 779 780 if (interlace_specified) 781 score += abs(db_interlace - interlace); 782 783 if (!interlace_specified || 784 db_interlace == interlace) 785 if (refresh_specified && 786 db[i].refresh == refresh) 787 return 1; 788 789 if (score < diff) { 790 diff = score; 791 best = i; 792 } 793 } 794 } 795 if (best != -1) { 796 fb_try_mode(var, info, &db[best], bpp); 797 return (refresh_specified) ? 2 : 1; 798 } 799 800 diff = 2 * (xres + yres); 801 best = -1; 802 DPRINTK("Trying best-fit modes\n"); 803 for (i = 0; i < dbsize; i++) { 804 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 805 if (!fb_try_mode(var, info, &db[i], bpp)) { 806 tdiff = abs(db[i].xres - xres) + 807 abs(db[i].yres - yres); 808 809 /* 810 * Penalize modes with resolutions smaller 811 * than requested. 812 */ 813 if (xres > db[i].xres || yres > db[i].yres) 814 tdiff += xres + yres; 815 816 if (diff > tdiff) { 817 diff = tdiff; 818 best = i; 819 } 820 } 821 } 822 if (best != -1) { 823 fb_try_mode(var, info, &db[best], bpp); 824 return 5; 825 } 826 } 827 828 DPRINTK("Trying default video mode\n"); 829 if (!fb_try_mode(var, info, default_mode, default_bpp)) 830 return 3; 831 832 DPRINTK("Trying all modes\n"); 833 for (i = 0; i < dbsize; i++) 834 if (!fb_try_mode(var, info, &db[i], default_bpp)) 835 return 4; 836 837 DPRINTK("No valid mode found\n"); 838 return 0; 839 } 840 841 /** 842 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 843 * @mode: pointer to struct fb_videomode 844 * @var: pointer to struct fb_var_screeninfo 845 */ 846 void fb_var_to_videomode(struct fb_videomode *mode, 847 const struct fb_var_screeninfo *var) 848 { 849 u32 pixclock, hfreq, htotal, vtotal; 850 851 mode->name = NULL; 852 mode->xres = var->xres; 853 mode->yres = var->yres; 854 mode->pixclock = var->pixclock; 855 mode->hsync_len = var->hsync_len; 856 mode->vsync_len = var->vsync_len; 857 mode->left_margin = var->left_margin; 858 mode->right_margin = var->right_margin; 859 mode->upper_margin = var->upper_margin; 860 mode->lower_margin = var->lower_margin; 861 mode->sync = var->sync; 862 mode->vmode = var->vmode & FB_VMODE_MASK; 863 mode->flag = FB_MODE_IS_FROM_VAR; 864 mode->refresh = 0; 865 866 if (!var->pixclock) 867 return; 868 869 pixclock = PICOS2KHZ(var->pixclock) * 1000; 870 871 htotal = var->xres + var->right_margin + var->hsync_len + 872 var->left_margin; 873 vtotal = var->yres + var->lower_margin + var->vsync_len + 874 var->upper_margin; 875 876 if (var->vmode & FB_VMODE_INTERLACED) 877 vtotal /= 2; 878 if (var->vmode & FB_VMODE_DOUBLE) 879 vtotal *= 2; 880 881 if (!htotal || !vtotal) 882 return; 883 884 hfreq = pixclock/htotal; 885 mode->refresh = hfreq/vtotal; 886 } 887 888 /** 889 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 890 * @var: pointer to struct fb_var_screeninfo 891 * @mode: pointer to struct fb_videomode 892 */ 893 void fb_videomode_to_var(struct fb_var_screeninfo *var, 894 const struct fb_videomode *mode) 895 { 896 var->xres = mode->xres; 897 var->yres = mode->yres; 898 var->xres_virtual = mode->xres; 899 var->yres_virtual = mode->yres; 900 var->xoffset = 0; 901 var->yoffset = 0; 902 var->pixclock = mode->pixclock; 903 var->left_margin = mode->left_margin; 904 var->right_margin = mode->right_margin; 905 var->upper_margin = mode->upper_margin; 906 var->lower_margin = mode->lower_margin; 907 var->hsync_len = mode->hsync_len; 908 var->vsync_len = mode->vsync_len; 909 var->sync = mode->sync; 910 var->vmode = mode->vmode & FB_VMODE_MASK; 911 } 912 913 /** 914 * fb_mode_is_equal - compare 2 videomodes 915 * @mode1: first videomode 916 * @mode2: second videomode 917 * 918 * RETURNS: 919 * 1 if equal, 0 if not 920 */ 921 int fb_mode_is_equal(const struct fb_videomode *mode1, 922 const struct fb_videomode *mode2) 923 { 924 return (mode1->xres == mode2->xres && 925 mode1->yres == mode2->yres && 926 mode1->pixclock == mode2->pixclock && 927 mode1->hsync_len == mode2->hsync_len && 928 mode1->vsync_len == mode2->vsync_len && 929 mode1->left_margin == mode2->left_margin && 930 mode1->right_margin == mode2->right_margin && 931 mode1->upper_margin == mode2->upper_margin && 932 mode1->lower_margin == mode2->lower_margin && 933 mode1->sync == mode2->sync && 934 mode1->vmode == mode2->vmode); 935 } 936 937 /** 938 * fb_find_best_mode - find best matching videomode 939 * @var: pointer to struct fb_var_screeninfo 940 * @head: pointer to struct list_head of modelist 941 * 942 * RETURNS: 943 * struct fb_videomode, NULL if none found 944 * 945 * IMPORTANT: 946 * This function assumes that all modelist entries in 947 * info->modelist are valid. 948 * 949 * NOTES: 950 * Finds best matching videomode which has an equal or greater dimension than 951 * var->xres and var->yres. If more than 1 videomode is found, will return 952 * the videomode with the highest refresh rate 953 */ 954 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 955 struct list_head *head) 956 { 957 struct list_head *pos; 958 struct fb_modelist *modelist; 959 struct fb_videomode *mode, *best = NULL; 960 u32 diff = -1; 961 962 list_for_each(pos, head) { 963 u32 d; 964 965 modelist = list_entry(pos, struct fb_modelist, list); 966 mode = &modelist->mode; 967 968 if (mode->xres >= var->xres && mode->yres >= var->yres) { 969 d = (mode->xres - var->xres) + 970 (mode->yres - var->yres); 971 if (diff > d) { 972 diff = d; 973 best = mode; 974 } else if (diff == d && best && 975 mode->refresh > best->refresh) 976 best = mode; 977 } 978 } 979 return best; 980 } 981 982 /** 983 * fb_find_nearest_mode - find closest videomode 984 * 985 * @mode: pointer to struct fb_videomode 986 * @head: pointer to modelist 987 * 988 * Finds best matching videomode, smaller or greater in dimension. 989 * If more than 1 videomode is found, will return the videomode with 990 * the closest refresh rate. 991 */ 992 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 993 struct list_head *head) 994 { 995 struct list_head *pos; 996 struct fb_modelist *modelist; 997 struct fb_videomode *cmode, *best = NULL; 998 u32 diff = -1, diff_refresh = -1; 999 1000 list_for_each(pos, head) { 1001 u32 d; 1002 1003 modelist = list_entry(pos, struct fb_modelist, list); 1004 cmode = &modelist->mode; 1005 1006 d = abs(cmode->xres - mode->xres) + 1007 abs(cmode->yres - mode->yres); 1008 if (diff > d) { 1009 diff = d; 1010 diff_refresh = abs(cmode->refresh - mode->refresh); 1011 best = cmode; 1012 } else if (diff == d) { 1013 d = abs(cmode->refresh - mode->refresh); 1014 if (diff_refresh > d) { 1015 diff_refresh = d; 1016 best = cmode; 1017 } 1018 } 1019 } 1020 1021 return best; 1022 } 1023 1024 /** 1025 * fb_match_mode - find a videomode which exactly matches the timings in var 1026 * @var: pointer to struct fb_var_screeninfo 1027 * @head: pointer to struct list_head of modelist 1028 * 1029 * RETURNS: 1030 * struct fb_videomode, NULL if none found 1031 */ 1032 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 1033 struct list_head *head) 1034 { 1035 struct list_head *pos; 1036 struct fb_modelist *modelist; 1037 struct fb_videomode *m, mode; 1038 1039 fb_var_to_videomode(&mode, var); 1040 list_for_each(pos, head) { 1041 modelist = list_entry(pos, struct fb_modelist, list); 1042 m = &modelist->mode; 1043 if (fb_mode_is_equal(m, &mode)) 1044 return m; 1045 } 1046 return NULL; 1047 } 1048 1049 /** 1050 * fb_add_videomode - adds videomode entry to modelist 1051 * @mode: videomode to add 1052 * @head: struct list_head of modelist 1053 * 1054 * NOTES: 1055 * Will only add unmatched mode entries 1056 */ 1057 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 1058 { 1059 struct list_head *pos; 1060 struct fb_modelist *modelist; 1061 struct fb_videomode *m; 1062 int found = 0; 1063 1064 list_for_each(pos, head) { 1065 modelist = list_entry(pos, struct fb_modelist, list); 1066 m = &modelist->mode; 1067 if (fb_mode_is_equal(m, mode)) { 1068 found = 1; 1069 break; 1070 } 1071 } 1072 if (!found) { 1073 modelist = kmalloc(sizeof(struct fb_modelist), 1074 GFP_KERNEL); 1075 1076 if (!modelist) 1077 return -ENOMEM; 1078 modelist->mode = *mode; 1079 list_add(&modelist->list, head); 1080 } 1081 return 0; 1082 } 1083 1084 /** 1085 * fb_delete_videomode - removed videomode entry from modelist 1086 * @mode: videomode to remove 1087 * @head: struct list_head of modelist 1088 * 1089 * NOTES: 1090 * Will remove all matching mode entries 1091 */ 1092 void fb_delete_videomode(const struct fb_videomode *mode, 1093 struct list_head *head) 1094 { 1095 struct list_head *pos, *n; 1096 struct fb_modelist *modelist; 1097 struct fb_videomode *m; 1098 1099 list_for_each_safe(pos, n, head) { 1100 modelist = list_entry(pos, struct fb_modelist, list); 1101 m = &modelist->mode; 1102 if (fb_mode_is_equal(m, mode)) { 1103 list_del(pos); 1104 kfree(pos); 1105 } 1106 } 1107 } 1108 1109 /** 1110 * fb_destroy_modelist - destroy modelist 1111 * @head: struct list_head of modelist 1112 */ 1113 void fb_destroy_modelist(struct list_head *head) 1114 { 1115 struct list_head *pos, *n; 1116 1117 list_for_each_safe(pos, n, head) { 1118 list_del(pos); 1119 kfree(pos); 1120 } 1121 } 1122 EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1123 1124 /** 1125 * fb_videomode_to_modelist - convert mode array to mode list 1126 * @modedb: array of struct fb_videomode 1127 * @num: number of entries in array 1128 * @head: struct list_head of modelist 1129 */ 1130 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1131 struct list_head *head) 1132 { 1133 int i; 1134 1135 INIT_LIST_HEAD(head); 1136 1137 for (i = 0; i < num; i++) { 1138 if (fb_add_videomode(&modedb[i], head)) 1139 return; 1140 } 1141 } 1142 1143 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1144 struct list_head *head) 1145 { 1146 struct list_head *pos; 1147 struct fb_modelist *modelist; 1148 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1149 int first = 0; 1150 1151 if (!head->prev || !head->next || list_empty(head)) 1152 goto finished; 1153 1154 /* get the first detailed mode and the very first mode */ 1155 list_for_each(pos, head) { 1156 modelist = list_entry(pos, struct fb_modelist, list); 1157 m = &modelist->mode; 1158 1159 if (!first) { 1160 m1 = m; 1161 first = 1; 1162 } 1163 1164 if (m->flag & FB_MODE_IS_FIRST) { 1165 md = m; 1166 break; 1167 } 1168 } 1169 1170 /* first detailed timing is preferred */ 1171 if (specs->misc & FB_MISC_1ST_DETAIL) { 1172 best = md; 1173 goto finished; 1174 } 1175 1176 /* find best mode based on display width and height */ 1177 if (specs->max_x && specs->max_y) { 1178 struct fb_var_screeninfo var; 1179 1180 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1181 var.xres = (specs->max_x * 7200)/254; 1182 var.yres = (specs->max_y * 7200)/254; 1183 m = fb_find_best_mode(&var, head); 1184 if (m) { 1185 best = m; 1186 goto finished; 1187 } 1188 } 1189 1190 /* use first detailed mode */ 1191 if (md) { 1192 best = md; 1193 goto finished; 1194 } 1195 1196 /* last resort, use the very first mode */ 1197 best = m1; 1198 finished: 1199 return best; 1200 } 1201 EXPORT_SYMBOL(fb_find_best_display); 1202 1203 EXPORT_SYMBOL(fb_videomode_to_var); 1204 EXPORT_SYMBOL(fb_var_to_videomode); 1205 EXPORT_SYMBOL(fb_mode_is_equal); 1206 EXPORT_SYMBOL(fb_add_videomode); 1207 EXPORT_SYMBOL(fb_match_mode); 1208 EXPORT_SYMBOL(fb_find_best_mode); 1209 EXPORT_SYMBOL(fb_find_nearest_mode); 1210 EXPORT_SYMBOL(fb_videomode_to_modelist); 1211 EXPORT_SYMBOL(fb_find_mode); 1212 EXPORT_SYMBOL(fb_find_mode_cvt); 1213