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 /* 1920x1080 @ 60 Hz, 67.3 kHz hsync */ 261 { NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5, 0, 262 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 263 FB_VMODE_NONINTERLACED }, 264 265 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ 266 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, 267 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 268 FB_VMODE_NONINTERLACED }, 269 270 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ 271 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, 272 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 273 FB_VMODE_NONINTERLACED }, 274 275 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ 276 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0, 277 FB_VMODE_NONINTERLACED }, 278 279 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ 280 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0, 281 FB_VMODE_NONINTERLACED }, 282 283 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 284 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0, 285 FB_VMODE_INTERLACED }, 286 287 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 288 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0, 289 FB_VMODE_INTERLACED }, 290 291 /* 864x480 @ 60 Hz, 35.15 kHz hsync */ 292 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0, 293 0, FB_VMODE_NONINTERLACED }, 294 }; 295 296 #ifdef CONFIG_FB_MODE_HELPERS 297 const struct fb_videomode vesa_modes[] = { 298 /* 0 640x350-85 VESA */ 299 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 300 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 301 /* 1 640x400-85 VESA */ 302 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 303 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 304 /* 2 720x400-85 VESA */ 305 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 306 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 307 /* 3 640x480-60 VESA */ 308 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 309 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 310 /* 4 640x480-72 VESA */ 311 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 312 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 313 /* 5 640x480-75 VESA */ 314 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 315 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 316 /* 6 640x480-85 VESA */ 317 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 318 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 319 /* 7 800x600-56 VESA */ 320 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 321 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 322 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 323 /* 8 800x600-60 VESA */ 324 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 325 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 326 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 327 /* 9 800x600-72 VESA */ 328 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 329 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 330 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 331 /* 10 800x600-75 VESA */ 332 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 334 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 335 /* 11 800x600-85 VESA */ 336 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 337 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 338 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 339 /* 12 1024x768i-43 VESA */ 340 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 341 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 342 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 343 /* 13 1024x768-60 VESA */ 344 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 345 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 346 /* 14 1024x768-70 VESA */ 347 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 348 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 349 /* 15 1024x768-75 VESA */ 350 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 351 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 352 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 353 /* 16 1024x768-85 VESA */ 354 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 355 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 356 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 357 /* 17 1152x864-75 VESA */ 358 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 359 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 360 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 361 /* 18 1280x960-60 VESA */ 362 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 363 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 364 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 365 /* 19 1280x960-85 VESA */ 366 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 367 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 368 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 369 /* 20 1280x1024-60 VESA */ 370 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 371 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 372 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 373 /* 21 1280x1024-75 VESA */ 374 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 375 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 376 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 377 /* 22 1280x1024-85 VESA */ 378 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 379 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 380 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 381 /* 23 1600x1200-60 VESA */ 382 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 383 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 384 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 385 /* 24 1600x1200-65 VESA */ 386 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 387 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 388 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 389 /* 25 1600x1200-70 VESA */ 390 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 391 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 392 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 393 /* 26 1600x1200-75 VESA */ 394 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 395 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 396 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 397 /* 27 1600x1200-85 VESA */ 398 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, 399 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 400 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 401 /* 28 1792x1344-60 VESA */ 402 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 403 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 404 /* 29 1792x1344-75 VESA */ 405 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 406 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 407 /* 30 1856x1392-60 VESA */ 408 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 409 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 410 /* 31 1856x1392-75 VESA */ 411 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 412 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 413 /* 32 1920x1440-60 VESA */ 414 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 415 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 416 /* 33 1920x1440-75 VESA */ 417 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 418 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 419 /* 34 1920x1200-60 RB VESA */ 420 { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6, 421 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 422 /* 35 1920x1200-60 VESA */ 423 { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6, 424 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 425 /* 36 1920x1200-75 VESA */ 426 { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6, 427 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 428 /* 37 1920x1200-85 VESA */ 429 { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6, 430 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 431 /* 38 2560x1600-60 RB VESA */ 432 { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6, 433 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 434 /* 39 2560x1600-60 VESA */ 435 { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6, 436 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 437 /* 40 2560x1600-75 VESA */ 438 { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6, 439 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 440 /* 41 2560x1600-85 VESA */ 441 { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6, 442 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 443 /* 42 2560x1600-120 RB VESA */ 444 { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6, 445 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 446 }; 447 EXPORT_SYMBOL(vesa_modes); 448 449 const struct dmt_videomode dmt_modes[DMT_SIZE] = { 450 { 0x01, 0x0000, 0x000000, &vesa_modes[0] }, 451 { 0x02, 0x3119, 0x000000, &vesa_modes[1] }, 452 { 0x03, 0x0000, 0x000000, &vesa_modes[2] }, 453 { 0x04, 0x3140, 0x000000, &vesa_modes[3] }, 454 { 0x05, 0x314c, 0x000000, &vesa_modes[4] }, 455 { 0x06, 0x314f, 0x000000, &vesa_modes[5] }, 456 { 0x07, 0x3159, 0x000000, &vesa_modes[6] }, 457 { 0x08, 0x0000, 0x000000, &vesa_modes[7] }, 458 { 0x09, 0x4540, 0x000000, &vesa_modes[8] }, 459 { 0x0a, 0x454c, 0x000000, &vesa_modes[9] }, 460 { 0x0b, 0x454f, 0x000000, &vesa_modes[10] }, 461 { 0x0c, 0x4559, 0x000000, &vesa_modes[11] }, 462 { 0x0d, 0x0000, 0x000000, NULL }, 463 { 0x0e, 0x0000, 0x000000, NULL }, 464 { 0x0f, 0x0000, 0x000000, &vesa_modes[12] }, 465 { 0x10, 0x6140, 0x000000, &vesa_modes[13] }, 466 { 0x11, 0x614a, 0x000000, &vesa_modes[14] }, 467 { 0x12, 0x614f, 0x000000, &vesa_modes[15] }, 468 { 0x13, 0x6159, 0x000000, &vesa_modes[16] }, 469 { 0x14, 0x0000, 0x000000, NULL }, 470 { 0x15, 0x714f, 0x000000, &vesa_modes[17] }, 471 { 0x16, 0x0000, 0x7f1c21, NULL }, 472 { 0x17, 0x0000, 0x7f1c28, NULL }, 473 { 0x18, 0x0000, 0x7f1c44, NULL }, 474 { 0x19, 0x0000, 0x7f1c62, NULL }, 475 { 0x1a, 0x0000, 0x000000, NULL }, 476 { 0x1b, 0x0000, 0x8f1821, NULL }, 477 { 0x1c, 0x8100, 0x8f1828, NULL }, 478 { 0x1d, 0x810f, 0x8f1844, NULL }, 479 { 0x1e, 0x8119, 0x8f1862, NULL }, 480 { 0x1f, 0x0000, 0x000000, NULL }, 481 { 0x20, 0x8140, 0x000000, &vesa_modes[18] }, 482 { 0x21, 0x8159, 0x000000, &vesa_modes[19] }, 483 { 0x22, 0x0000, 0x000000, NULL }, 484 { 0x23, 0x8180, 0x000000, &vesa_modes[20] }, 485 { 0x24, 0x818f, 0x000000, &vesa_modes[21] }, 486 { 0x25, 0x8199, 0x000000, &vesa_modes[22] }, 487 { 0x26, 0x0000, 0x000000, NULL }, 488 { 0x27, 0x0000, 0x000000, NULL }, 489 { 0x28, 0x0000, 0x000000, NULL }, 490 { 0x29, 0x0000, 0x0c2021, NULL }, 491 { 0x2a, 0x9040, 0x0c2028, NULL }, 492 { 0x2b, 0x904f, 0x0c2044, NULL }, 493 { 0x2c, 0x9059, 0x0c2062, NULL }, 494 { 0x2d, 0x0000, 0x000000, NULL }, 495 { 0x2e, 0x9500, 0xc11821, NULL }, 496 { 0x2f, 0x9500, 0xc11828, NULL }, 497 { 0x30, 0x950f, 0xc11844, NULL }, 498 { 0x31, 0x9519, 0xc11868, NULL }, 499 { 0x32, 0x0000, 0x000000, NULL }, 500 { 0x33, 0xa940, 0x000000, &vesa_modes[23] }, 501 { 0x34, 0xa945, 0x000000, &vesa_modes[24] }, 502 { 0x35, 0xa94a, 0x000000, &vesa_modes[25] }, 503 { 0x36, 0xa94f, 0x000000, &vesa_modes[26] }, 504 { 0x37, 0xa959, 0x000000, &vesa_modes[27] }, 505 { 0x38, 0x0000, 0x000000, NULL }, 506 { 0x39, 0x0000, 0x0c2821, NULL }, 507 { 0x3a, 0xb300, 0x0c2828, NULL }, 508 { 0x3b, 0xb30f, 0x0c2844, NULL }, 509 { 0x3c, 0xb319, 0x0c2868, NULL }, 510 { 0x3d, 0x0000, 0x000000, NULL }, 511 { 0x3e, 0xc140, 0x000000, &vesa_modes[28] }, 512 { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] }, 513 { 0x40, 0x0000, 0x000000, NULL}, 514 { 0x41, 0xc940, 0x000000, &vesa_modes[30] }, 515 { 0x42, 0xc94f, 0x000000, &vesa_modes[31] }, 516 { 0x43, 0x0000, 0x000000, NULL }, 517 { 0x44, 0x0000, 0x572821, &vesa_modes[34] }, 518 { 0x45, 0xd100, 0x572828, &vesa_modes[35] }, 519 { 0x46, 0xd10f, 0x572844, &vesa_modes[36] }, 520 { 0x47, 0xd119, 0x572862, &vesa_modes[37] }, 521 { 0x48, 0x0000, 0x000000, NULL }, 522 { 0x49, 0xd140, 0x000000, &vesa_modes[32] }, 523 { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] }, 524 { 0x4b, 0x0000, 0x000000, NULL }, 525 { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] }, 526 { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] }, 527 { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] }, 528 { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] }, 529 { 0x50, 0x0000, 0x000000, &vesa_modes[42] }, 530 }; 531 EXPORT_SYMBOL(dmt_modes); 532 #endif /* CONFIG_FB_MODE_HELPERS */ 533 534 /** 535 * fb_try_mode - test a video mode 536 * @var: frame buffer user defined part of display 537 * @info: frame buffer info structure 538 * @mode: frame buffer video mode structure 539 * @bpp: color depth in bits per pixel 540 * 541 * Tries a video mode to test it's validity for device @info. 542 * 543 * Returns 1 on success. 544 * 545 */ 546 fb_try_mode(struct fb_var_screeninfo * var,struct fb_info * info,const struct fb_videomode * mode,unsigned int bpp)547 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, 548 const struct fb_videomode *mode, unsigned int bpp) 549 { 550 int err = 0; 551 552 DPRINTK("Trying mode %s %dx%d-%d@%d\n", 553 mode->name ? mode->name : "noname", 554 mode->xres, mode->yres, bpp, mode->refresh); 555 var->xres = mode->xres; 556 var->yres = mode->yres; 557 var->xres_virtual = mode->xres; 558 var->yres_virtual = mode->yres; 559 var->xoffset = 0; 560 var->yoffset = 0; 561 var->bits_per_pixel = bpp; 562 var->activate |= FB_ACTIVATE_TEST; 563 var->pixclock = mode->pixclock; 564 var->left_margin = mode->left_margin; 565 var->right_margin = mode->right_margin; 566 var->upper_margin = mode->upper_margin; 567 var->lower_margin = mode->lower_margin; 568 var->hsync_len = mode->hsync_len; 569 var->vsync_len = mode->vsync_len; 570 var->sync = mode->sync; 571 var->vmode = mode->vmode; 572 if (info->fbops->fb_check_var) 573 err = info->fbops->fb_check_var(var, info); 574 var->activate &= ~FB_ACTIVATE_TEST; 575 return err; 576 } 577 578 /** 579 * fb_find_mode - finds a valid video mode 580 * @var: frame buffer user defined part of display 581 * @info: frame buffer info structure 582 * @mode_option: string video mode to find 583 * @db: video mode database 584 * @dbsize: size of @db 585 * @default_mode: default video mode to fall back to 586 * @default_bpp: default color depth in bits per pixel 587 * 588 * Finds a suitable video mode, starting with the specified mode 589 * in @mode_option with fallback to @default_mode. If 590 * @default_mode fails, all modes in the video mode database will 591 * be tried. 592 * 593 * Valid mode specifiers for @mode_option:: 594 * 595 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m] 596 * 597 * or :: 598 * 599 * <name>[-<bpp>][@<refresh>] 600 * 601 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 602 * <name> a string. 603 * 604 * If 'M' is present after yres (and before refresh/bpp if present), 605 * the function will compute the timings using VESA(tm) Coordinated 606 * Video Timings (CVT). If 'R' is present after 'M', will compute with 607 * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute 608 * interlaced or progressive mode. If 'm' is present, add margins equal 609 * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char 610 * 'i', 'p' and 'm' must be after 'M' and 'R'. Example:: 611 * 612 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. 613 * 614 * NOTE: The passed struct @var is _not_ cleared! This allows you 615 * to supply values for e.g. the grayscale and accel_flags fields. 616 * 617 * Returns zero for failure, 1 if using specified @mode_option, 618 * 2 if using specified @mode_option with an ignored refresh rate, 619 * 3 if default mode is used, 4 if fall back to any valid mode. 620 */ 621 fb_find_mode(struct fb_var_screeninfo * var,struct fb_info * info,const char * mode_option,const struct fb_videomode * db,unsigned int dbsize,const struct fb_videomode * default_mode,unsigned int default_bpp)622 int fb_find_mode(struct fb_var_screeninfo *var, 623 struct fb_info *info, const char *mode_option, 624 const struct fb_videomode *db, unsigned int dbsize, 625 const struct fb_videomode *default_mode, 626 unsigned int default_bpp) 627 { 628 char *mode_option_buf = NULL; 629 int i; 630 631 /* Set up defaults */ 632 if (!db) { 633 db = modedb; 634 dbsize = ARRAY_SIZE(modedb); 635 } 636 637 if (!default_mode) 638 default_mode = &db[0]; 639 640 if (!default_bpp) 641 default_bpp = 8; 642 643 /* Did the user specify a video mode? */ 644 if (!mode_option) { 645 fb_get_options(NULL, &mode_option_buf); 646 mode_option = mode_option_buf; 647 } 648 if (mode_option) { 649 const char *name = mode_option; 650 unsigned int namelen = strlen(name); 651 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 652 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 653 int yres_specified = 0, cvt = 0, rb = 0; 654 int interlace_specified = 0, interlace = 0; 655 int margins = 0; 656 u32 best, diff, tdiff; 657 658 for (i = namelen-1; i >= 0; i--) { 659 switch (name[i]) { 660 case '@': 661 namelen = i; 662 if (!refresh_specified && !bpp_specified && 663 !yres_specified) { 664 refresh = simple_strtol(&name[i+1], NULL, 665 10); 666 refresh_specified = 1; 667 if (cvt || rb) 668 cvt = 0; 669 } else 670 goto done; 671 break; 672 case '-': 673 namelen = i; 674 if (!bpp_specified && !yres_specified) { 675 bpp = simple_strtol(&name[i+1], NULL, 676 10); 677 bpp_specified = 1; 678 if (cvt || rb) 679 cvt = 0; 680 } else 681 goto done; 682 break; 683 case 'x': 684 if (!yres_specified) { 685 yres = simple_strtol(&name[i+1], NULL, 686 10); 687 yres_specified = 1; 688 } else 689 goto done; 690 break; 691 case '0' ... '9': 692 break; 693 case 'M': 694 if (!yres_specified) 695 cvt = 1; 696 break; 697 case 'R': 698 if (!cvt) 699 rb = 1; 700 break; 701 case 'm': 702 if (!cvt) 703 margins = 1; 704 break; 705 case 'p': 706 if (!cvt) { 707 interlace = 0; 708 interlace_specified = 1; 709 } 710 break; 711 case 'i': 712 if (!cvt) { 713 interlace = 1; 714 interlace_specified = 1; 715 } 716 break; 717 default: 718 goto done; 719 } 720 } 721 if (i < 0 && yres_specified) { 722 xres = simple_strtol(name, NULL, 10); 723 res_specified = 1; 724 } 725 done: 726 kfree(mode_option_buf); 727 if (cvt) { 728 struct fb_videomode cvt_mode; 729 int ret; 730 731 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 732 (refresh) ? refresh : 60, 733 (rb) ? " reduced blanking" : "", 734 (margins) ? " with margins" : "", 735 (interlace) ? " interlaced" : ""); 736 737 memset(&cvt_mode, 0, sizeof(cvt_mode)); 738 cvt_mode.xres = xres; 739 cvt_mode.yres = yres; 740 cvt_mode.refresh = (refresh) ? refresh : 60; 741 742 if (interlace) 743 cvt_mode.vmode |= FB_VMODE_INTERLACED; 744 else 745 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 746 747 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 748 749 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 750 DPRINTK("modedb CVT: CVT mode ok\n"); 751 return 1; 752 } 753 754 DPRINTK("CVT mode invalid, getting mode from database\n"); 755 } 756 757 DPRINTK("Trying specified video mode%s %ix%i\n", 758 refresh_specified ? "" : " (ignoring refresh rate)", 759 xres, yres); 760 761 if (!refresh_specified) { 762 /* 763 * If the caller has provided a custom mode database and 764 * a valid monspecs structure, we look for the mode with 765 * the highest refresh rate. Otherwise we play it safe 766 * it and try to find a mode with a refresh rate closest 767 * to the standard 60 Hz. 768 */ 769 if (db != modedb && 770 info->monspecs.vfmin && info->monspecs.vfmax && 771 info->monspecs.hfmin && info->monspecs.hfmax && 772 info->monspecs.dclkmax) { 773 refresh = 1000; 774 } else { 775 refresh = 60; 776 } 777 } 778 779 diff = -1; 780 best = -1; 781 for (i = 0; i < dbsize; i++) { 782 if ((name_matches(db[i], name, namelen) || 783 (res_specified && res_matches(db[i], xres, yres))) && 784 !fb_try_mode(var, info, &db[i], bpp)) { 785 const int db_interlace = (db[i].vmode & 786 FB_VMODE_INTERLACED ? 1 : 0); 787 int score = abs(db[i].refresh - refresh); 788 789 if (interlace_specified) 790 score += abs(db_interlace - interlace); 791 792 if (!interlace_specified || 793 db_interlace == interlace) 794 if (refresh_specified && 795 db[i].refresh == refresh) 796 return 1; 797 798 if (score < diff) { 799 diff = score; 800 best = i; 801 } 802 } 803 } 804 if (best != -1) { 805 fb_try_mode(var, info, &db[best], bpp); 806 return (refresh_specified) ? 2 : 1; 807 } 808 809 diff = 2 * (xres + yres); 810 best = -1; 811 DPRINTK("Trying best-fit modes\n"); 812 for (i = 0; i < dbsize; i++) { 813 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 814 if (!fb_try_mode(var, info, &db[i], bpp)) { 815 tdiff = abs(db[i].xres - xres) + 816 abs(db[i].yres - yres); 817 818 /* 819 * Penalize modes with resolutions smaller 820 * than requested. 821 */ 822 if (xres > db[i].xres || yres > db[i].yres) 823 tdiff += xres + yres; 824 825 if (diff > tdiff) { 826 diff = tdiff; 827 best = i; 828 } 829 } 830 } 831 if (best != -1) { 832 fb_try_mode(var, info, &db[best], bpp); 833 return 5; 834 } 835 } 836 837 DPRINTK("Trying default video mode\n"); 838 if (!fb_try_mode(var, info, default_mode, default_bpp)) 839 return 3; 840 841 DPRINTK("Trying all modes\n"); 842 for (i = 0; i < dbsize; i++) 843 if (!fb_try_mode(var, info, &db[i], default_bpp)) 844 return 4; 845 846 DPRINTK("No valid mode found\n"); 847 return 0; 848 } 849 850 /** 851 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 852 * @mode: pointer to struct fb_videomode 853 * @var: pointer to struct fb_var_screeninfo 854 */ fb_var_to_videomode(struct fb_videomode * mode,const struct fb_var_screeninfo * var)855 void fb_var_to_videomode(struct fb_videomode *mode, 856 const struct fb_var_screeninfo *var) 857 { 858 u32 pixclock, hfreq, htotal, vtotal; 859 860 mode->name = NULL; 861 mode->xres = var->xres; 862 mode->yres = var->yres; 863 mode->pixclock = var->pixclock; 864 mode->hsync_len = var->hsync_len; 865 mode->vsync_len = var->vsync_len; 866 mode->left_margin = var->left_margin; 867 mode->right_margin = var->right_margin; 868 mode->upper_margin = var->upper_margin; 869 mode->lower_margin = var->lower_margin; 870 mode->sync = var->sync; 871 mode->vmode = var->vmode & FB_VMODE_MASK; 872 mode->flag = FB_MODE_IS_FROM_VAR; 873 mode->refresh = 0; 874 875 if (!var->pixclock) 876 return; 877 878 pixclock = PICOS2KHZ(var->pixclock) * 1000; 879 880 htotal = var->xres + var->right_margin + var->hsync_len + 881 var->left_margin; 882 vtotal = var->yres + var->lower_margin + var->vsync_len + 883 var->upper_margin; 884 885 if (var->vmode & FB_VMODE_INTERLACED) 886 vtotal /= 2; 887 if (var->vmode & FB_VMODE_DOUBLE) 888 vtotal *= 2; 889 890 if (!htotal || !vtotal) 891 return; 892 893 hfreq = pixclock/htotal; 894 mode->refresh = hfreq/vtotal; 895 } 896 897 /** 898 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 899 * @var: pointer to struct fb_var_screeninfo 900 * @mode: pointer to struct fb_videomode 901 */ fb_videomode_to_var(struct fb_var_screeninfo * var,const struct fb_videomode * mode)902 void fb_videomode_to_var(struct fb_var_screeninfo *var, 903 const struct fb_videomode *mode) 904 { 905 var->xres = mode->xres; 906 var->yres = mode->yres; 907 var->xres_virtual = mode->xres; 908 var->yres_virtual = mode->yres; 909 var->xoffset = 0; 910 var->yoffset = 0; 911 var->pixclock = mode->pixclock; 912 var->left_margin = mode->left_margin; 913 var->right_margin = mode->right_margin; 914 var->upper_margin = mode->upper_margin; 915 var->lower_margin = mode->lower_margin; 916 var->hsync_len = mode->hsync_len; 917 var->vsync_len = mode->vsync_len; 918 var->sync = mode->sync; 919 var->vmode = mode->vmode & FB_VMODE_MASK; 920 } 921 922 /** 923 * fb_mode_is_equal - compare 2 videomodes 924 * @mode1: first videomode 925 * @mode2: second videomode 926 * 927 * RETURNS: 928 * 1 if equal, 0 if not 929 */ fb_mode_is_equal(const struct fb_videomode * mode1,const struct fb_videomode * mode2)930 int fb_mode_is_equal(const struct fb_videomode *mode1, 931 const struct fb_videomode *mode2) 932 { 933 return (mode1->xres == mode2->xres && 934 mode1->yres == mode2->yres && 935 mode1->pixclock == mode2->pixclock && 936 mode1->hsync_len == mode2->hsync_len && 937 mode1->vsync_len == mode2->vsync_len && 938 mode1->left_margin == mode2->left_margin && 939 mode1->right_margin == mode2->right_margin && 940 mode1->upper_margin == mode2->upper_margin && 941 mode1->lower_margin == mode2->lower_margin && 942 mode1->sync == mode2->sync && 943 mode1->vmode == mode2->vmode); 944 } 945 946 /** 947 * fb_find_best_mode - find best matching videomode 948 * @var: pointer to struct fb_var_screeninfo 949 * @head: pointer to struct list_head of modelist 950 * 951 * RETURNS: 952 * struct fb_videomode, NULL if none found 953 * 954 * IMPORTANT: 955 * This function assumes that all modelist entries in 956 * info->modelist are valid. 957 * 958 * NOTES: 959 * Finds best matching videomode which has an equal or greater dimension than 960 * var->xres and var->yres. If more than 1 videomode is found, will return 961 * the videomode with the highest refresh rate 962 */ fb_find_best_mode(const struct fb_var_screeninfo * var,struct list_head * head)963 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 964 struct list_head *head) 965 { 966 struct fb_modelist *modelist; 967 struct fb_videomode *mode, *best = NULL; 968 u32 diff = -1; 969 970 list_for_each_entry(modelist, head, list) { 971 u32 d; 972 mode = &modelist->mode; 973 974 if (mode->xres >= var->xres && mode->yres >= var->yres) { 975 d = (mode->xres - var->xres) + 976 (mode->yres - var->yres); 977 if (diff > d) { 978 diff = d; 979 best = mode; 980 } else if (diff == d && best && 981 mode->refresh > best->refresh) 982 best = mode; 983 } 984 } 985 return best; 986 } 987 988 /** 989 * fb_find_nearest_mode - find closest videomode 990 * 991 * @mode: pointer to struct fb_videomode 992 * @head: pointer to modelist 993 * 994 * Finds best matching videomode, smaller or greater in dimension. 995 * If more than 1 videomode is found, will return the videomode with 996 * the closest refresh rate. 997 */ fb_find_nearest_mode(const struct fb_videomode * mode,struct list_head * head)998 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 999 struct list_head *head) 1000 { 1001 struct fb_modelist *modelist; 1002 struct fb_videomode *cmode, *best = NULL; 1003 u32 diff = -1, diff_refresh = -1; 1004 1005 list_for_each_entry(modelist, head, list) { 1006 u32 d; 1007 cmode = &modelist->mode; 1008 1009 d = abs(cmode->xres - mode->xres) + 1010 abs(cmode->yres - mode->yres); 1011 if (diff > d) { 1012 diff = d; 1013 diff_refresh = abs(cmode->refresh - mode->refresh); 1014 best = cmode; 1015 } else if (diff == d) { 1016 d = abs(cmode->refresh - mode->refresh); 1017 if (diff_refresh > d) { 1018 diff_refresh = d; 1019 best = cmode; 1020 } 1021 } 1022 } 1023 1024 return best; 1025 } 1026 1027 /** 1028 * fb_match_mode - find a videomode which exactly matches the timings in var 1029 * @var: pointer to struct fb_var_screeninfo 1030 * @head: pointer to struct list_head of modelist 1031 * 1032 * RETURNS: 1033 * struct fb_videomode, NULL if none found 1034 */ fb_match_mode(const struct fb_var_screeninfo * var,struct list_head * head)1035 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 1036 struct list_head *head) 1037 { 1038 struct fb_modelist *modelist; 1039 struct fb_videomode *m, mode; 1040 1041 fb_var_to_videomode(&mode, var); 1042 list_for_each_entry(modelist, head, list) { 1043 m = &modelist->mode; 1044 if (fb_mode_is_equal(m, &mode)) 1045 return m; 1046 } 1047 return NULL; 1048 } 1049 1050 /** 1051 * fb_add_videomode - adds videomode entry to modelist 1052 * @mode: videomode to add 1053 * @head: struct list_head of modelist 1054 * 1055 * NOTES: 1056 * Will only add unmatched mode entries 1057 */ fb_add_videomode(const struct fb_videomode * mode,struct list_head * head)1058 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 1059 { 1060 struct fb_modelist *modelist; 1061 struct fb_videomode *m; 1062 int found = 0; 1063 1064 list_for_each_entry(modelist, head, list) { 1065 m = &modelist->mode; 1066 if (fb_mode_is_equal(m, mode)) { 1067 found = 1; 1068 break; 1069 } 1070 } 1071 if (!found) { 1072 modelist = kmalloc(sizeof(struct fb_modelist), 1073 GFP_KERNEL); 1074 1075 if (!modelist) 1076 return -ENOMEM; 1077 modelist->mode = *mode; 1078 list_add(&modelist->list, head); 1079 } 1080 return 0; 1081 } 1082 1083 /** 1084 * fb_delete_videomode - removed videomode entry from modelist 1085 * @mode: videomode to remove 1086 * @head: struct list_head of modelist 1087 * 1088 * NOTES: 1089 * Will remove all matching mode entries 1090 */ fb_delete_videomode(const struct fb_videomode * mode,struct list_head * head)1091 void fb_delete_videomode(const struct fb_videomode *mode, 1092 struct list_head *head) 1093 { 1094 struct list_head *pos, *n; 1095 struct fb_modelist *modelist; 1096 struct fb_videomode *m; 1097 1098 list_for_each_safe(pos, n, head) { 1099 modelist = list_entry(pos, struct fb_modelist, list); 1100 m = &modelist->mode; 1101 if (fb_mode_is_equal(m, mode)) { 1102 list_del(pos); 1103 kfree(pos); 1104 } 1105 } 1106 } 1107 1108 /** 1109 * fb_destroy_modelist - destroy modelist 1110 * @head: struct list_head of modelist 1111 */ fb_destroy_modelist(struct list_head * head)1112 void fb_destroy_modelist(struct list_head *head) 1113 { 1114 struct list_head *pos, *n; 1115 1116 list_for_each_safe(pos, n, head) { 1117 list_del(pos); 1118 kfree(pos); 1119 } 1120 } 1121 EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1122 1123 /** 1124 * fb_videomode_to_modelist - convert mode array to mode list 1125 * @modedb: array of struct fb_videomode 1126 * @num: number of entries in array 1127 * @head: struct list_head of modelist 1128 */ fb_videomode_to_modelist(const struct fb_videomode * modedb,int num,struct list_head * head)1129 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1130 struct list_head *head) 1131 { 1132 int i; 1133 1134 INIT_LIST_HEAD(head); 1135 1136 for (i = 0; i < num; i++) { 1137 if (fb_add_videomode(&modedb[i], head)) 1138 return; 1139 } 1140 } 1141 fb_find_best_display(const struct fb_monspecs * specs,struct list_head * head)1142 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1143 struct list_head *head) 1144 { 1145 struct fb_modelist *modelist; 1146 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1147 int first = 0; 1148 1149 if (!head->prev || !head->next || list_empty(head)) 1150 goto finished; 1151 1152 /* get the first detailed mode and the very first mode */ 1153 list_for_each_entry(modelist, head, list) { 1154 m = &modelist->mode; 1155 1156 if (!first) { 1157 m1 = m; 1158 first = 1; 1159 } 1160 1161 if (m->flag & FB_MODE_IS_FIRST) { 1162 md = m; 1163 break; 1164 } 1165 } 1166 1167 /* first detailed timing is preferred */ 1168 if (specs->misc & FB_MISC_1ST_DETAIL) { 1169 best = md; 1170 goto finished; 1171 } 1172 1173 /* find best mode based on display width and height */ 1174 if (specs->max_x && specs->max_y) { 1175 struct fb_var_screeninfo var; 1176 1177 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1178 var.xres = (specs->max_x * 7200)/254; 1179 var.yres = (specs->max_y * 7200)/254; 1180 m = fb_find_best_mode(&var, head); 1181 if (m) { 1182 best = m; 1183 goto finished; 1184 } 1185 } 1186 1187 /* use first detailed mode */ 1188 if (md) { 1189 best = md; 1190 goto finished; 1191 } 1192 1193 /* last resort, use the very first mode */ 1194 best = m1; 1195 finished: 1196 return best; 1197 } 1198 EXPORT_SYMBOL(fb_find_best_display); 1199 1200 EXPORT_SYMBOL(fb_videomode_to_var); 1201 EXPORT_SYMBOL(fb_var_to_videomode); 1202 EXPORT_SYMBOL(fb_mode_is_equal); 1203 EXPORT_SYMBOL(fb_add_videomode); 1204 EXPORT_SYMBOL(fb_match_mode); 1205 EXPORT_SYMBOL(fb_find_best_mode); 1206 EXPORT_SYMBOL(fb_find_nearest_mode); 1207 EXPORT_SYMBOL(fb_videomode_to_modelist); 1208 EXPORT_SYMBOL(fb_find_mode); 1209 EXPORT_SYMBOL(fb_find_mode_cvt); 1210