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 char *mode_option_buf = NULL; 624 int i; 625 626 /* Set up defaults */ 627 if (!db) { 628 db = modedb; 629 dbsize = ARRAY_SIZE(modedb); 630 } 631 632 if (!default_mode) 633 default_mode = &db[0]; 634 635 if (!default_bpp) 636 default_bpp = 8; 637 638 /* Did the user specify a video mode? */ 639 if (!mode_option) { 640 fb_get_options(NULL, &mode_option_buf); 641 mode_option = mode_option_buf; 642 } 643 if (mode_option) { 644 const char *name = mode_option; 645 unsigned int namelen = strlen(name); 646 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 647 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 648 int yres_specified = 0, cvt = 0, rb = 0; 649 int interlace_specified = 0, interlace = 0; 650 int margins = 0; 651 u32 best, diff, tdiff; 652 653 for (i = namelen-1; i >= 0; i--) { 654 switch (name[i]) { 655 case '@': 656 namelen = i; 657 if (!refresh_specified && !bpp_specified && 658 !yres_specified) { 659 refresh = simple_strtol(&name[i+1], NULL, 660 10); 661 refresh_specified = 1; 662 if (cvt || rb) 663 cvt = 0; 664 } else 665 goto done; 666 break; 667 case '-': 668 namelen = i; 669 if (!bpp_specified && !yres_specified) { 670 bpp = simple_strtol(&name[i+1], NULL, 671 10); 672 bpp_specified = 1; 673 if (cvt || rb) 674 cvt = 0; 675 } else 676 goto done; 677 break; 678 case 'x': 679 if (!yres_specified) { 680 yres = simple_strtol(&name[i+1], NULL, 681 10); 682 yres_specified = 1; 683 } else 684 goto done; 685 break; 686 case '0' ... '9': 687 break; 688 case 'M': 689 if (!yres_specified) 690 cvt = 1; 691 break; 692 case 'R': 693 if (!cvt) 694 rb = 1; 695 break; 696 case 'm': 697 if (!cvt) 698 margins = 1; 699 break; 700 case 'p': 701 if (!cvt) { 702 interlace = 0; 703 interlace_specified = 1; 704 } 705 break; 706 case 'i': 707 if (!cvt) { 708 interlace = 1; 709 interlace_specified = 1; 710 } 711 break; 712 default: 713 goto done; 714 } 715 } 716 if (i < 0 && yres_specified) { 717 xres = simple_strtol(name, NULL, 10); 718 res_specified = 1; 719 } 720 done: 721 kfree(mode_option_buf); 722 if (cvt) { 723 struct fb_videomode cvt_mode; 724 int ret; 725 726 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 727 (refresh) ? refresh : 60, 728 (rb) ? " reduced blanking" : "", 729 (margins) ? " with margins" : "", 730 (interlace) ? " interlaced" : ""); 731 732 memset(&cvt_mode, 0, sizeof(cvt_mode)); 733 cvt_mode.xres = xres; 734 cvt_mode.yres = yres; 735 cvt_mode.refresh = (refresh) ? refresh : 60; 736 737 if (interlace) 738 cvt_mode.vmode |= FB_VMODE_INTERLACED; 739 else 740 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 741 742 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 743 744 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 745 DPRINTK("modedb CVT: CVT mode ok\n"); 746 return 1; 747 } 748 749 DPRINTK("CVT mode invalid, getting mode from database\n"); 750 } 751 752 DPRINTK("Trying specified video mode%s %ix%i\n", 753 refresh_specified ? "" : " (ignoring refresh rate)", 754 xres, yres); 755 756 if (!refresh_specified) { 757 /* 758 * If the caller has provided a custom mode database and 759 * a valid monspecs structure, we look for the mode with 760 * the highest refresh rate. Otherwise we play it safe 761 * it and try to find a mode with a refresh rate closest 762 * to the standard 60 Hz. 763 */ 764 if (db != modedb && 765 info->monspecs.vfmin && info->monspecs.vfmax && 766 info->monspecs.hfmin && info->monspecs.hfmax && 767 info->monspecs.dclkmax) { 768 refresh = 1000; 769 } else { 770 refresh = 60; 771 } 772 } 773 774 diff = -1; 775 best = -1; 776 for (i = 0; i < dbsize; i++) { 777 if ((name_matches(db[i], name, namelen) || 778 (res_specified && res_matches(db[i], xres, yres))) && 779 !fb_try_mode(var, info, &db[i], bpp)) { 780 const int db_interlace = (db[i].vmode & 781 FB_VMODE_INTERLACED ? 1 : 0); 782 int score = abs(db[i].refresh - refresh); 783 784 if (interlace_specified) 785 score += abs(db_interlace - interlace); 786 787 if (!interlace_specified || 788 db_interlace == interlace) 789 if (refresh_specified && 790 db[i].refresh == refresh) 791 return 1; 792 793 if (score < diff) { 794 diff = score; 795 best = i; 796 } 797 } 798 } 799 if (best != -1) { 800 fb_try_mode(var, info, &db[best], bpp); 801 return (refresh_specified) ? 2 : 1; 802 } 803 804 diff = 2 * (xres + yres); 805 best = -1; 806 DPRINTK("Trying best-fit modes\n"); 807 for (i = 0; i < dbsize; i++) { 808 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 809 if (!fb_try_mode(var, info, &db[i], bpp)) { 810 tdiff = abs(db[i].xres - xres) + 811 abs(db[i].yres - yres); 812 813 /* 814 * Penalize modes with resolutions smaller 815 * than requested. 816 */ 817 if (xres > db[i].xres || yres > db[i].yres) 818 tdiff += xres + yres; 819 820 if (diff > tdiff) { 821 diff = tdiff; 822 best = i; 823 } 824 } 825 } 826 if (best != -1) { 827 fb_try_mode(var, info, &db[best], bpp); 828 return 5; 829 } 830 } 831 832 DPRINTK("Trying default video mode\n"); 833 if (!fb_try_mode(var, info, default_mode, default_bpp)) 834 return 3; 835 836 DPRINTK("Trying all modes\n"); 837 for (i = 0; i < dbsize; i++) 838 if (!fb_try_mode(var, info, &db[i], default_bpp)) 839 return 4; 840 841 DPRINTK("No valid mode found\n"); 842 return 0; 843 } 844 845 /** 846 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 847 * @mode: pointer to struct fb_videomode 848 * @var: pointer to struct fb_var_screeninfo 849 */ 850 void fb_var_to_videomode(struct fb_videomode *mode, 851 const struct fb_var_screeninfo *var) 852 { 853 u32 pixclock, hfreq, htotal, vtotal; 854 855 mode->name = NULL; 856 mode->xres = var->xres; 857 mode->yres = var->yres; 858 mode->pixclock = var->pixclock; 859 mode->hsync_len = var->hsync_len; 860 mode->vsync_len = var->vsync_len; 861 mode->left_margin = var->left_margin; 862 mode->right_margin = var->right_margin; 863 mode->upper_margin = var->upper_margin; 864 mode->lower_margin = var->lower_margin; 865 mode->sync = var->sync; 866 mode->vmode = var->vmode & FB_VMODE_MASK; 867 mode->flag = FB_MODE_IS_FROM_VAR; 868 mode->refresh = 0; 869 870 if (!var->pixclock) 871 return; 872 873 pixclock = PICOS2KHZ(var->pixclock) * 1000; 874 875 htotal = var->xres + var->right_margin + var->hsync_len + 876 var->left_margin; 877 vtotal = var->yres + var->lower_margin + var->vsync_len + 878 var->upper_margin; 879 880 if (var->vmode & FB_VMODE_INTERLACED) 881 vtotal /= 2; 882 if (var->vmode & FB_VMODE_DOUBLE) 883 vtotal *= 2; 884 885 if (!htotal || !vtotal) 886 return; 887 888 hfreq = pixclock/htotal; 889 mode->refresh = hfreq/vtotal; 890 } 891 892 /** 893 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 894 * @var: pointer to struct fb_var_screeninfo 895 * @mode: pointer to struct fb_videomode 896 */ 897 void fb_videomode_to_var(struct fb_var_screeninfo *var, 898 const struct fb_videomode *mode) 899 { 900 var->xres = mode->xres; 901 var->yres = mode->yres; 902 var->xres_virtual = mode->xres; 903 var->yres_virtual = mode->yres; 904 var->xoffset = 0; 905 var->yoffset = 0; 906 var->pixclock = mode->pixclock; 907 var->left_margin = mode->left_margin; 908 var->right_margin = mode->right_margin; 909 var->upper_margin = mode->upper_margin; 910 var->lower_margin = mode->lower_margin; 911 var->hsync_len = mode->hsync_len; 912 var->vsync_len = mode->vsync_len; 913 var->sync = mode->sync; 914 var->vmode = mode->vmode & FB_VMODE_MASK; 915 } 916 917 /** 918 * fb_mode_is_equal - compare 2 videomodes 919 * @mode1: first videomode 920 * @mode2: second videomode 921 * 922 * RETURNS: 923 * 1 if equal, 0 if not 924 */ 925 int fb_mode_is_equal(const struct fb_videomode *mode1, 926 const struct fb_videomode *mode2) 927 { 928 return (mode1->xres == mode2->xres && 929 mode1->yres == mode2->yres && 930 mode1->pixclock == mode2->pixclock && 931 mode1->hsync_len == mode2->hsync_len && 932 mode1->vsync_len == mode2->vsync_len && 933 mode1->left_margin == mode2->left_margin && 934 mode1->right_margin == mode2->right_margin && 935 mode1->upper_margin == mode2->upper_margin && 936 mode1->lower_margin == mode2->lower_margin && 937 mode1->sync == mode2->sync && 938 mode1->vmode == mode2->vmode); 939 } 940 941 /** 942 * fb_find_best_mode - find best matching videomode 943 * @var: pointer to struct fb_var_screeninfo 944 * @head: pointer to struct list_head of modelist 945 * 946 * RETURNS: 947 * struct fb_videomode, NULL if none found 948 * 949 * IMPORTANT: 950 * This function assumes that all modelist entries in 951 * info->modelist are valid. 952 * 953 * NOTES: 954 * Finds best matching videomode which has an equal or greater dimension than 955 * var->xres and var->yres. If more than 1 videomode is found, will return 956 * the videomode with the highest refresh rate 957 */ 958 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 959 struct list_head *head) 960 { 961 struct list_head *pos; 962 struct fb_modelist *modelist; 963 struct fb_videomode *mode, *best = NULL; 964 u32 diff = -1; 965 966 list_for_each(pos, head) { 967 u32 d; 968 969 modelist = list_entry(pos, struct fb_modelist, list); 970 mode = &modelist->mode; 971 972 if (mode->xres >= var->xres && mode->yres >= var->yres) { 973 d = (mode->xres - var->xres) + 974 (mode->yres - var->yres); 975 if (diff > d) { 976 diff = d; 977 best = mode; 978 } else if (diff == d && best && 979 mode->refresh > best->refresh) 980 best = mode; 981 } 982 } 983 return best; 984 } 985 986 /** 987 * fb_find_nearest_mode - find closest videomode 988 * 989 * @mode: pointer to struct fb_videomode 990 * @head: pointer to modelist 991 * 992 * Finds best matching videomode, smaller or greater in dimension. 993 * If more than 1 videomode is found, will return the videomode with 994 * the closest refresh rate. 995 */ 996 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 997 struct list_head *head) 998 { 999 struct list_head *pos; 1000 struct fb_modelist *modelist; 1001 struct fb_videomode *cmode, *best = NULL; 1002 u32 diff = -1, diff_refresh = -1; 1003 1004 list_for_each(pos, head) { 1005 u32 d; 1006 1007 modelist = list_entry(pos, struct fb_modelist, list); 1008 cmode = &modelist->mode; 1009 1010 d = abs(cmode->xres - mode->xres) + 1011 abs(cmode->yres - mode->yres); 1012 if (diff > d) { 1013 diff = d; 1014 diff_refresh = abs(cmode->refresh - mode->refresh); 1015 best = cmode; 1016 } else if (diff == d) { 1017 d = abs(cmode->refresh - mode->refresh); 1018 if (diff_refresh > d) { 1019 diff_refresh = d; 1020 best = cmode; 1021 } 1022 } 1023 } 1024 1025 return best; 1026 } 1027 1028 /** 1029 * fb_match_mode - find a videomode which exactly matches the timings in var 1030 * @var: pointer to struct fb_var_screeninfo 1031 * @head: pointer to struct list_head of modelist 1032 * 1033 * RETURNS: 1034 * struct fb_videomode, NULL if none found 1035 */ 1036 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 1037 struct list_head *head) 1038 { 1039 struct list_head *pos; 1040 struct fb_modelist *modelist; 1041 struct fb_videomode *m, mode; 1042 1043 fb_var_to_videomode(&mode, var); 1044 list_for_each(pos, head) { 1045 modelist = list_entry(pos, struct fb_modelist, list); 1046 m = &modelist->mode; 1047 if (fb_mode_is_equal(m, &mode)) 1048 return m; 1049 } 1050 return NULL; 1051 } 1052 1053 /** 1054 * fb_add_videomode - adds videomode entry to modelist 1055 * @mode: videomode to add 1056 * @head: struct list_head of modelist 1057 * 1058 * NOTES: 1059 * Will only add unmatched mode entries 1060 */ 1061 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 1062 { 1063 struct list_head *pos; 1064 struct fb_modelist *modelist; 1065 struct fb_videomode *m; 1066 int found = 0; 1067 1068 list_for_each(pos, head) { 1069 modelist = list_entry(pos, struct fb_modelist, list); 1070 m = &modelist->mode; 1071 if (fb_mode_is_equal(m, mode)) { 1072 found = 1; 1073 break; 1074 } 1075 } 1076 if (!found) { 1077 modelist = kmalloc(sizeof(struct fb_modelist), 1078 GFP_KERNEL); 1079 1080 if (!modelist) 1081 return -ENOMEM; 1082 modelist->mode = *mode; 1083 list_add(&modelist->list, head); 1084 } 1085 return 0; 1086 } 1087 1088 /** 1089 * fb_delete_videomode - removed videomode entry from modelist 1090 * @mode: videomode to remove 1091 * @head: struct list_head of modelist 1092 * 1093 * NOTES: 1094 * Will remove all matching mode entries 1095 */ 1096 void fb_delete_videomode(const struct fb_videomode *mode, 1097 struct list_head *head) 1098 { 1099 struct list_head *pos, *n; 1100 struct fb_modelist *modelist; 1101 struct fb_videomode *m; 1102 1103 list_for_each_safe(pos, n, head) { 1104 modelist = list_entry(pos, struct fb_modelist, list); 1105 m = &modelist->mode; 1106 if (fb_mode_is_equal(m, mode)) { 1107 list_del(pos); 1108 kfree(pos); 1109 } 1110 } 1111 } 1112 1113 /** 1114 * fb_destroy_modelist - destroy modelist 1115 * @head: struct list_head of modelist 1116 */ 1117 void fb_destroy_modelist(struct list_head *head) 1118 { 1119 struct list_head *pos, *n; 1120 1121 list_for_each_safe(pos, n, head) { 1122 list_del(pos); 1123 kfree(pos); 1124 } 1125 } 1126 EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1127 1128 /** 1129 * fb_videomode_to_modelist - convert mode array to mode list 1130 * @modedb: array of struct fb_videomode 1131 * @num: number of entries in array 1132 * @head: struct list_head of modelist 1133 */ 1134 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1135 struct list_head *head) 1136 { 1137 int i; 1138 1139 INIT_LIST_HEAD(head); 1140 1141 for (i = 0; i < num; i++) { 1142 if (fb_add_videomode(&modedb[i], head)) 1143 return; 1144 } 1145 } 1146 1147 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1148 struct list_head *head) 1149 { 1150 struct list_head *pos; 1151 struct fb_modelist *modelist; 1152 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1153 int first = 0; 1154 1155 if (!head->prev || !head->next || list_empty(head)) 1156 goto finished; 1157 1158 /* get the first detailed mode and the very first mode */ 1159 list_for_each(pos, head) { 1160 modelist = list_entry(pos, struct fb_modelist, list); 1161 m = &modelist->mode; 1162 1163 if (!first) { 1164 m1 = m; 1165 first = 1; 1166 } 1167 1168 if (m->flag & FB_MODE_IS_FIRST) { 1169 md = m; 1170 break; 1171 } 1172 } 1173 1174 /* first detailed timing is preferred */ 1175 if (specs->misc & FB_MISC_1ST_DETAIL) { 1176 best = md; 1177 goto finished; 1178 } 1179 1180 /* find best mode based on display width and height */ 1181 if (specs->max_x && specs->max_y) { 1182 struct fb_var_screeninfo var; 1183 1184 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1185 var.xres = (specs->max_x * 7200)/254; 1186 var.yres = (specs->max_y * 7200)/254; 1187 m = fb_find_best_mode(&var, head); 1188 if (m) { 1189 best = m; 1190 goto finished; 1191 } 1192 } 1193 1194 /* use first detailed mode */ 1195 if (md) { 1196 best = md; 1197 goto finished; 1198 } 1199 1200 /* last resort, use the very first mode */ 1201 best = m1; 1202 finished: 1203 return best; 1204 } 1205 EXPORT_SYMBOL(fb_find_best_display); 1206 1207 EXPORT_SYMBOL(fb_videomode_to_var); 1208 EXPORT_SYMBOL(fb_var_to_videomode); 1209 EXPORT_SYMBOL(fb_mode_is_equal); 1210 EXPORT_SYMBOL(fb_add_videomode); 1211 EXPORT_SYMBOL(fb_match_mode); 1212 EXPORT_SYMBOL(fb_find_best_mode); 1213 EXPORT_SYMBOL(fb_find_nearest_mode); 1214 EXPORT_SYMBOL(fb_videomode_to_modelist); 1215 EXPORT_SYMBOL(fb_find_mode); 1216 EXPORT_SYMBOL(fb_find_mode_cvt); 1217