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 36static const struct fb_videomode modedb[] = { 37 38 /* 640x400 @ 70 Hz, 31.5 kHz hsync */ 39 { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0, 40 FB_VMODE_NONINTERLACED }, 41 42 /* 640x480 @ 60 Hz, 31.5 kHz hsync */ 43 { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0, 44 FB_VMODE_NONINTERLACED }, 45 46 /* 800x600 @ 56 Hz, 35.15 kHz hsync */ 47 { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0, 48 FB_VMODE_NONINTERLACED }, 49 50 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ 51 { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0, 52 FB_VMODE_INTERLACED }, 53 54 /* 640x400 @ 85 Hz, 37.86 kHz hsync */ 55 { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, 56 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED }, 57 58 /* 640x480 @ 72 Hz, 36.5 kHz hsync */ 59 { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0, 60 FB_VMODE_NONINTERLACED }, 61 62 /* 640x480 @ 75 Hz, 37.50 kHz hsync */ 63 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 64 FB_VMODE_NONINTERLACED }, 65 66 /* 800x600 @ 60 Hz, 37.8 kHz hsync */ 67 { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, 68 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 69 FB_VMODE_NONINTERLACED }, 70 71 /* 640x480 @ 85 Hz, 43.27 kHz hsync */ 72 { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0, 73 FB_VMODE_NONINTERLACED }, 74 75 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ 76 { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0, 77 FB_VMODE_INTERLACED }, 78 /* 800x600 @ 72 Hz, 48.0 kHz hsync */ 79 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 80 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 81 FB_VMODE_NONINTERLACED }, 82 83 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ 84 { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0, 85 FB_VMODE_NONINTERLACED }, 86 87 /* 640x480 @ 100 Hz, 53.01 kHz hsync */ 88 { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0, 89 FB_VMODE_NONINTERLACED }, 90 91 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ 92 { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0, 93 FB_VMODE_NONINTERLACED }, 94 95 /* 800x600 @ 85 Hz, 55.84 kHz hsync */ 96 { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0, 97 FB_VMODE_NONINTERLACED }, 98 99 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ 100 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 101 FB_VMODE_NONINTERLACED }, 102 103 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ 104 { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0, 105 FB_VMODE_INTERLACED }, 106 107 /* 800x600 @ 100 Hz, 64.02 kHz hsync */ 108 { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0, 109 FB_VMODE_NONINTERLACED }, 110 111 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ 112 { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0, 113 FB_VMODE_NONINTERLACED }, 114 115 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ 116 { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0, 117 FB_VMODE_NONINTERLACED }, 118 119 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ 120 { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0, 121 FB_VMODE_NONINTERLACED }, 122 123 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ 124 { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0, 125 FB_VMODE_NONINTERLACED }, 126 127 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ 128 { NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, 129 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 130 FB_VMODE_NONINTERLACED }, 131 132 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ 133 { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, 134 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 135 FB_VMODE_NONINTERLACED }, 136 137 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ 138 { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0, 139 FB_VMODE_NONINTERLACED }, 140 141 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ 142 { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0, 143 FB_VMODE_NONINTERLACED }, 144 145 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ 146 { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0, 147 FB_VMODE_NONINTERLACED }, 148 149 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ 150 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 151 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 152 FB_VMODE_NONINTERLACED }, 153 154 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ 155 { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0, 156 FB_VMODE_NONINTERLACED }, 157 158 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ 159 { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0, 160 FB_VMODE_NONINTERLACED }, 161 162 /* 1024x768 @ 100Hz, 80.21 kHz hsync */ 163 { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0, 164 FB_VMODE_NONINTERLACED }, 165 166 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ 167 { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0, 168 FB_VMODE_NONINTERLACED }, 169 170 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ 171 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0, 172 FB_VMODE_NONINTERLACED }, 173 174 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ 175 { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0, 176 FB_VMODE_NONINTERLACED }, 177 178 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ 179 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 180 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 181 FB_VMODE_NONINTERLACED }, 182 183 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ 184 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 185 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 186 FB_VMODE_NONINTERLACED }, 187 188 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ 189 { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, 190 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 191 FB_VMODE_NONINTERLACED }, 192 193 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ 194 { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, 195 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 196 FB_VMODE_NONINTERLACED }, 197 198 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ 199 { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0, 200 FB_VMODE_NONINTERLACED }, 201 202 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ 203 { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, 204 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 205 FB_VMODE_NONINTERLACED }, 206 207 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ 208 { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, 209 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 210 FB_VMODE_NONINTERLACED }, 211 212 /* 512x384 @ 78 Hz, 31.50 kHz hsync */ 213 { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 214 FB_VMODE_NONINTERLACED }, 215 216 /* 512x384 @ 85 Hz, 34.38 kHz hsync */ 217 { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0, 218 FB_VMODE_NONINTERLACED }, 219 220 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ 221 { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 222 FB_VMODE_DOUBLE }, 223 224 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ 225 { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0, 226 FB_VMODE_DOUBLE }, 227 228 /* 320x240 @ 72 Hz, 36.5 kHz hsync */ 229 { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 230 FB_VMODE_DOUBLE }, 231 232 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ 233 { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0, 234 FB_VMODE_DOUBLE }, 235 236 /* 400x300 @ 60 Hz, 37.8 kHz hsync */ 237 { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0, 238 FB_VMODE_DOUBLE }, 239 240 /* 400x300 @ 72 Hz, 48.0 kHz hsync */ 241 { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0, 242 FB_VMODE_DOUBLE }, 243 244 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ 245 { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0, 246 FB_VMODE_DOUBLE }, 247 248 /* 480x300 @ 60 Hz, 37.8 kHz hsync */ 249 { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0, 250 FB_VMODE_DOUBLE }, 251 252 /* 480x300 @ 63 Hz, 39.6 kHz hsync */ 253 { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0, 254 FB_VMODE_DOUBLE }, 255 256 /* 480x300 @ 72 Hz, 48.0 kHz hsync */ 257 { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0, 258 FB_VMODE_DOUBLE }, 259 260 /* 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 292const struct fb_videomode cea_modes[64] = { 293 /* #1: 640x480p@59.94/60Hz */ 294 [1] = { 295 NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0, 296 FB_VMODE_NONINTERLACED, 0, 297 }, 298 /* #3: 720x480p@59.94/60Hz */ 299 [3] = { 300 NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0, 301 FB_VMODE_NONINTERLACED, 0, 302 }, 303 /* #5: 1920x1080i@59.94/60Hz */ 304 [5] = { 305 NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5, 306 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 307 FB_VMODE_INTERLACED, 0, 308 }, 309 /* #7: 720(1440)x480iH@59.94/60Hz */ 310 [7] = { 311 NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0, 312 FB_VMODE_INTERLACED, 0, 313 }, 314 /* #9: 720(1440)x240pH@59.94/60Hz */ 315 [9] = { 316 NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0, 317 FB_VMODE_NONINTERLACED, 0, 318 }, 319 /* #18: 720x576pH@50Hz */ 320 [18] = { 321 NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0, 322 FB_VMODE_NONINTERLACED, 0, 323 }, 324 /* #19: 1280x720p@50Hz */ 325 [19] = { 326 NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5, 327 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 328 FB_VMODE_NONINTERLACED, 0, 329 }, 330 /* #20: 1920x1080i@50Hz */ 331 [20] = { 332 NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5, 333 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 334 FB_VMODE_INTERLACED, 0, 335 }, 336 /* #32: 1920x1080p@23.98/24Hz */ 337 [32] = { 338 NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5, 339 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 340 FB_VMODE_NONINTERLACED, 0, 341 }, 342 /* #35: (2880)x480p4x@59.94/60Hz */ 343 [35] = { 344 NULL, 60, 2880, 480, 9250, 240, 64, 30, 9, 248, 6, 0, 345 FB_VMODE_NONINTERLACED, 0, 346 }, 347}; 348 349const struct fb_videomode vesa_modes[] = { 350 /* 0 640x350-85 VESA */ 351 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 352 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 353 /* 1 640x400-85 VESA */ 354 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 355 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 356 /* 2 720x400-85 VESA */ 357 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 358 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 359 /* 3 640x480-60 VESA */ 360 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 361 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 362 /* 4 640x480-72 VESA */ 363 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 364 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 365 /* 5 640x480-75 VESA */ 366 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 367 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 368 /* 6 640x480-85 VESA */ 369 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 370 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 371 /* 7 800x600-56 VESA */ 372 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 373 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 374 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 375 /* 8 800x600-60 VESA */ 376 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 377 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 378 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 379 /* 9 800x600-72 VESA */ 380 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 381 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 382 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 383 /* 10 800x600-75 VESA */ 384 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 385 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 386 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 387 /* 11 800x600-85 VESA */ 388 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 389 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 390 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 391 /* 12 1024x768i-43 VESA */ 392 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 393 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 394 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 395 /* 13 1024x768-60 VESA */ 396 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 397 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 398 /* 14 1024x768-70 VESA */ 399 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 400 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 401 /* 15 1024x768-75 VESA */ 402 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 403 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 404 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 405 /* 16 1024x768-85 VESA */ 406 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 407 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 408 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 409 /* 17 1152x864-75 VESA */ 410 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 411 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 412 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 413 /* 18 1280x960-60 VESA */ 414 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 415 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 416 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 417 /* 19 1280x960-85 VESA */ 418 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 419 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 420 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 421 /* 20 1280x1024-60 VESA */ 422 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 423 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 424 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 425 /* 21 1280x1024-75 VESA */ 426 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 427 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 428 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 429 /* 22 1280x1024-85 VESA */ 430 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 431 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 432 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 433 /* 23 1600x1200-60 VESA */ 434 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 435 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 436 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 437 /* 24 1600x1200-65 VESA */ 438 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 439 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 440 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 441 /* 25 1600x1200-70 VESA */ 442 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 443 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 444 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 445 /* 26 1600x1200-75 VESA */ 446 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 447 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 448 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 449 /* 27 1600x1200-85 VESA */ 450 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, 451 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 452 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 453 /* 28 1792x1344-60 VESA */ 454 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 455 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 456 /* 29 1792x1344-75 VESA */ 457 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 458 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 459 /* 30 1856x1392-60 VESA */ 460 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 461 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 462 /* 31 1856x1392-75 VESA */ 463 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 464 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 465 /* 32 1920x1440-60 VESA */ 466 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 467 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 468 /* 33 1920x1440-75 VESA */ 469 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 470 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 471}; 472EXPORT_SYMBOL(vesa_modes); 473#endif /* CONFIG_FB_MODE_HELPERS */ 474 475/** 476 * fb_try_mode - test a video mode 477 * @var: frame buffer user defined part of display 478 * @info: frame buffer info structure 479 * @mode: frame buffer video mode structure 480 * @bpp: color depth in bits per pixel 481 * 482 * Tries a video mode to test it's validity for device @info. 483 * 484 * Returns 1 on success. 485 * 486 */ 487 488static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, 489 const struct fb_videomode *mode, unsigned int bpp) 490{ 491 int err = 0; 492 493 DPRINTK("Trying mode %s %dx%d-%d@%d\n", 494 mode->name ? mode->name : "noname", 495 mode->xres, mode->yres, bpp, mode->refresh); 496 var->xres = mode->xres; 497 var->yres = mode->yres; 498 var->xres_virtual = mode->xres; 499 var->yres_virtual = mode->yres; 500 var->xoffset = 0; 501 var->yoffset = 0; 502 var->bits_per_pixel = bpp; 503 var->activate |= FB_ACTIVATE_TEST; 504 var->pixclock = mode->pixclock; 505 var->left_margin = mode->left_margin; 506 var->right_margin = mode->right_margin; 507 var->upper_margin = mode->upper_margin; 508 var->lower_margin = mode->lower_margin; 509 var->hsync_len = mode->hsync_len; 510 var->vsync_len = mode->vsync_len; 511 var->sync = mode->sync; 512 var->vmode = mode->vmode; 513 if (info->fbops->fb_check_var) 514 err = info->fbops->fb_check_var(var, info); 515 var->activate &= ~FB_ACTIVATE_TEST; 516 return err; 517} 518 519/** 520 * fb_find_mode - finds a valid video mode 521 * @var: frame buffer user defined part of display 522 * @info: frame buffer info structure 523 * @mode_option: string video mode to find 524 * @db: video mode database 525 * @dbsize: size of @db 526 * @default_mode: default video mode to fall back to 527 * @default_bpp: default color depth in bits per pixel 528 * 529 * Finds a suitable video mode, starting with the specified mode 530 * in @mode_option with fallback to @default_mode. If 531 * @default_mode fails, all modes in the video mode database will 532 * be tried. 533 * 534 * Valid mode specifiers for @mode_option: 535 * 536 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or 537 * <name>[-<bpp>][@<refresh>] 538 * 539 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 540 * <name> a string. 541 * 542 * If 'M' is present after yres (and before refresh/bpp if present), 543 * the function will compute the timings using VESA(tm) Coordinated 544 * Video Timings (CVT). If 'R' is present after 'M', will compute with 545 * reduced blanking (for flatpanels). If 'i' is present, compute 546 * interlaced mode. If 'm' is present, add margins equal to 1.8% 547 * of xres rounded down to 8 pixels, and 1.8% of yres. The char 548 * 'i' and 'm' must be after 'M' and 'R'. Example: 549 * 550 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. 551 * 552 * NOTE: The passed struct @var is _not_ cleared! This allows you 553 * to supply values for e.g. the grayscale and accel_flags fields. 554 * 555 * Returns zero for failure, 1 if using specified @mode_option, 556 * 2 if using specified @mode_option with an ignored refresh rate, 557 * 3 if default mode is used, 4 if fall back to any valid mode. 558 * 559 */ 560 561int fb_find_mode(struct fb_var_screeninfo *var, 562 struct fb_info *info, const char *mode_option, 563 const struct fb_videomode *db, unsigned int dbsize, 564 const struct fb_videomode *default_mode, 565 unsigned int default_bpp) 566{ 567 int i; 568 569 /* Set up defaults */ 570 if (!db) { 571 db = modedb; 572 dbsize = ARRAY_SIZE(modedb); 573 } 574 575 if (!default_mode) 576 default_mode = &db[0]; 577 578 if (!default_bpp) 579 default_bpp = 8; 580 581 /* Did the user specify a video mode? */ 582 if (!mode_option) 583 mode_option = fb_mode_option; 584 if (mode_option) { 585 const char *name = mode_option; 586 unsigned int namelen = strlen(name); 587 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 588 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 589 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0; 590 int margins = 0; 591 u32 best, diff, tdiff; 592 593 for (i = namelen-1; i >= 0; i--) { 594 switch (name[i]) { 595 case '@': 596 namelen = i; 597 if (!refresh_specified && !bpp_specified && 598 !yres_specified) { 599 refresh = simple_strtol(&name[i+1], NULL, 600 10); 601 refresh_specified = 1; 602 if (cvt || rb) 603 cvt = 0; 604 } else 605 goto done; 606 break; 607 case '-': 608 namelen = i; 609 if (!bpp_specified && !yres_specified) { 610 bpp = simple_strtol(&name[i+1], NULL, 611 10); 612 bpp_specified = 1; 613 if (cvt || rb) 614 cvt = 0; 615 } else 616 goto done; 617 break; 618 case 'x': 619 if (!yres_specified) { 620 yres = simple_strtol(&name[i+1], NULL, 621 10); 622 yres_specified = 1; 623 } else 624 goto done; 625 break; 626 case '0' ... '9': 627 break; 628 case 'M': 629 if (!yres_specified) 630 cvt = 1; 631 break; 632 case 'R': 633 if (!cvt) 634 rb = 1; 635 break; 636 case 'm': 637 if (!cvt) 638 margins = 1; 639 break; 640 case 'i': 641 if (!cvt) 642 interlace = 1; 643 break; 644 default: 645 goto done; 646 } 647 } 648 if (i < 0 && yres_specified) { 649 xres = simple_strtol(name, NULL, 10); 650 res_specified = 1; 651 } 652done: 653 if (cvt) { 654 struct fb_videomode cvt_mode; 655 int ret; 656 657 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 658 (refresh) ? refresh : 60, 659 (rb) ? " reduced blanking" : "", 660 (margins) ? " with margins" : "", 661 (interlace) ? " interlaced" : ""); 662 663 memset(&cvt_mode, 0, sizeof(cvt_mode)); 664 cvt_mode.xres = xres; 665 cvt_mode.yres = yres; 666 cvt_mode.refresh = (refresh) ? refresh : 60; 667 668 if (interlace) 669 cvt_mode.vmode |= FB_VMODE_INTERLACED; 670 else 671 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 672 673 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 674 675 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 676 DPRINTK("modedb CVT: CVT mode ok\n"); 677 return 1; 678 } 679 680 DPRINTK("CVT mode invalid, getting mode from database\n"); 681 } 682 683 DPRINTK("Trying specified video mode%s %ix%i\n", 684 refresh_specified ? "" : " (ignoring refresh rate)", 685 xres, yres); 686 687 if (!refresh_specified) { 688 /* 689 * If the caller has provided a custom mode database and 690 * a valid monspecs structure, we look for the mode with 691 * the highest refresh rate. Otherwise we play it safe 692 * it and try to find a mode with a refresh rate closest 693 * to the standard 60 Hz. 694 */ 695 if (db != modedb && 696 info->monspecs.vfmin && info->monspecs.vfmax && 697 info->monspecs.hfmin && info->monspecs.hfmax && 698 info->monspecs.dclkmax) { 699 refresh = 1000; 700 } else { 701 refresh = 60; 702 } 703 } 704 705 diff = -1; 706 best = -1; 707 for (i = 0; i < dbsize; i++) { 708 if ((name_matches(db[i], name, namelen) || 709 (res_specified && res_matches(db[i], xres, yres))) && 710 !fb_try_mode(var, info, &db[i], bpp)) { 711 if (refresh_specified && db[i].refresh == refresh) 712 return 1; 713 714 if (abs(db[i].refresh - refresh) < diff) { 715 diff = abs(db[i].refresh - refresh); 716 best = i; 717 } 718 } 719 } 720 if (best != -1) { 721 fb_try_mode(var, info, &db[best], bpp); 722 return (refresh_specified) ? 2 : 1; 723 } 724 725 diff = 2 * (xres + yres); 726 best = -1; 727 DPRINTK("Trying best-fit modes\n"); 728 for (i = 0; i < dbsize; i++) { 729 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 730 if (!fb_try_mode(var, info, &db[i], bpp)) { 731 tdiff = abs(db[i].xres - xres) + 732 abs(db[i].yres - yres); 733 734 /* 735 * Penalize modes with resolutions smaller 736 * than requested. 737 */ 738 if (xres > db[i].xres || yres > db[i].yres) 739 tdiff += xres + yres; 740 741 if (diff > tdiff) { 742 diff = tdiff; 743 best = i; 744 } 745 } 746 } 747 if (best != -1) { 748 fb_try_mode(var, info, &db[best], bpp); 749 return 5; 750 } 751 } 752 753 DPRINTK("Trying default video mode\n"); 754 if (!fb_try_mode(var, info, default_mode, default_bpp)) 755 return 3; 756 757 DPRINTK("Trying all modes\n"); 758 for (i = 0; i < dbsize; i++) 759 if (!fb_try_mode(var, info, &db[i], default_bpp)) 760 return 4; 761 762 DPRINTK("No valid mode found\n"); 763 return 0; 764} 765 766/** 767 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 768 * @mode: pointer to struct fb_videomode 769 * @var: pointer to struct fb_var_screeninfo 770 */ 771void fb_var_to_videomode(struct fb_videomode *mode, 772 const struct fb_var_screeninfo *var) 773{ 774 u32 pixclock, hfreq, htotal, vtotal; 775 776 mode->name = NULL; 777 mode->xres = var->xres; 778 mode->yres = var->yres; 779 mode->pixclock = var->pixclock; 780 mode->hsync_len = var->hsync_len; 781 mode->vsync_len = var->vsync_len; 782 mode->left_margin = var->left_margin; 783 mode->right_margin = var->right_margin; 784 mode->upper_margin = var->upper_margin; 785 mode->lower_margin = var->lower_margin; 786 mode->sync = var->sync; 787 mode->vmode = var->vmode & FB_VMODE_MASK; 788 mode->flag = FB_MODE_IS_FROM_VAR; 789 mode->refresh = 0; 790 791 if (!var->pixclock) 792 return; 793 794 pixclock = PICOS2KHZ(var->pixclock) * 1000; 795 796 htotal = var->xres + var->right_margin + var->hsync_len + 797 var->left_margin; 798 vtotal = var->yres + var->lower_margin + var->vsync_len + 799 var->upper_margin; 800 801 if (var->vmode & FB_VMODE_INTERLACED) 802 vtotal /= 2; 803 if (var->vmode & FB_VMODE_DOUBLE) 804 vtotal *= 2; 805 806 hfreq = pixclock/htotal; 807 mode->refresh = hfreq/vtotal; 808} 809 810/** 811 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 812 * @var: pointer to struct fb_var_screeninfo 813 * @mode: pointer to struct fb_videomode 814 */ 815void fb_videomode_to_var(struct fb_var_screeninfo *var, 816 const struct fb_videomode *mode) 817{ 818 var->xres = mode->xres; 819 var->yres = mode->yres; 820 var->xres_virtual = mode->xres; 821 var->yres_virtual = mode->yres; 822 var->xoffset = 0; 823 var->yoffset = 0; 824 var->pixclock = mode->pixclock; 825 var->left_margin = mode->left_margin; 826 var->right_margin = mode->right_margin; 827 var->upper_margin = mode->upper_margin; 828 var->lower_margin = mode->lower_margin; 829 var->hsync_len = mode->hsync_len; 830 var->vsync_len = mode->vsync_len; 831 var->sync = mode->sync; 832 var->vmode = mode->vmode & FB_VMODE_MASK; 833} 834 835/** 836 * fb_mode_is_equal - compare 2 videomodes 837 * @mode1: first videomode 838 * @mode2: second videomode 839 * 840 * RETURNS: 841 * 1 if equal, 0 if not 842 */ 843int fb_mode_is_equal(const struct fb_videomode *mode1, 844 const struct fb_videomode *mode2) 845{ 846 return (mode1->xres == mode2->xres && 847 mode1->yres == mode2->yres && 848 mode1->pixclock == mode2->pixclock && 849 mode1->hsync_len == mode2->hsync_len && 850 mode1->vsync_len == mode2->vsync_len && 851 mode1->left_margin == mode2->left_margin && 852 mode1->right_margin == mode2->right_margin && 853 mode1->upper_margin == mode2->upper_margin && 854 mode1->lower_margin == mode2->lower_margin && 855 mode1->sync == mode2->sync && 856 mode1->vmode == mode2->vmode); 857} 858 859/** 860 * fb_find_best_mode - find best matching videomode 861 * @var: pointer to struct fb_var_screeninfo 862 * @head: pointer to struct list_head of modelist 863 * 864 * RETURNS: 865 * struct fb_videomode, NULL if none found 866 * 867 * IMPORTANT: 868 * This function assumes that all modelist entries in 869 * info->modelist are valid. 870 * 871 * NOTES: 872 * Finds best matching videomode which has an equal or greater dimension than 873 * var->xres and var->yres. If more than 1 videomode is found, will return 874 * the videomode with the highest refresh rate 875 */ 876const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 877 struct list_head *head) 878{ 879 struct list_head *pos; 880 struct fb_modelist *modelist; 881 struct fb_videomode *mode, *best = NULL; 882 u32 diff = -1; 883 884 list_for_each(pos, head) { 885 u32 d; 886 887 modelist = list_entry(pos, struct fb_modelist, list); 888 mode = &modelist->mode; 889 890 if (mode->xres >= var->xres && mode->yres >= var->yres) { 891 d = (mode->xres - var->xres) + 892 (mode->yres - var->yres); 893 if (diff > d) { 894 diff = d; 895 best = mode; 896 } else if (diff == d && best && 897 mode->refresh > best->refresh) 898 best = mode; 899 } 900 } 901 return best; 902} 903 904/** 905 * fb_find_nearest_mode - find closest videomode 906 * 907 * @mode: pointer to struct fb_videomode 908 * @head: pointer to modelist 909 * 910 * Finds best matching videomode, smaller or greater in dimension. 911 * If more than 1 videomode is found, will return the videomode with 912 * the closest refresh rate. 913 */ 914const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 915 struct list_head *head) 916{ 917 struct list_head *pos; 918 struct fb_modelist *modelist; 919 struct fb_videomode *cmode, *best = NULL; 920 u32 diff = -1, diff_refresh = -1; 921 922 list_for_each(pos, head) { 923 u32 d; 924 925 modelist = list_entry(pos, struct fb_modelist, list); 926 cmode = &modelist->mode; 927 928 d = abs(cmode->xres - mode->xres) + 929 abs(cmode->yres - mode->yres); 930 if (diff > d) { 931 diff = d; 932 diff_refresh = abs(cmode->refresh - mode->refresh); 933 best = cmode; 934 } else if (diff == d) { 935 d = abs(cmode->refresh - mode->refresh); 936 if (diff_refresh > d) { 937 diff_refresh = d; 938 best = cmode; 939 } 940 } 941 } 942 943 return best; 944} 945 946/** 947 * fb_match_mode - find a videomode which exactly matches the timings in var 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 */ 954const struct fb_videomode *fb_match_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 *m, mode; 960 961 fb_var_to_videomode(&mode, var); 962 list_for_each(pos, head) { 963 modelist = list_entry(pos, struct fb_modelist, list); 964 m = &modelist->mode; 965 if (fb_mode_is_equal(m, &mode)) 966 return m; 967 } 968 return NULL; 969} 970 971/** 972 * fb_add_videomode - adds videomode entry to modelist 973 * @mode: videomode to add 974 * @head: struct list_head of modelist 975 * 976 * NOTES: 977 * Will only add unmatched mode entries 978 */ 979int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 980{ 981 struct list_head *pos; 982 struct fb_modelist *modelist; 983 struct fb_videomode *m; 984 int found = 0; 985 986 list_for_each(pos, head) { 987 modelist = list_entry(pos, struct fb_modelist, list); 988 m = &modelist->mode; 989 if (fb_mode_is_equal(m, mode)) { 990 found = 1; 991 break; 992 } 993 } 994 if (!found) { 995 modelist = kmalloc(sizeof(struct fb_modelist), 996 GFP_KERNEL); 997 998 if (!modelist) 999 return -ENOMEM; 1000 modelist->mode = *mode; 1001 list_add(&modelist->list, head); 1002 } 1003 return 0; 1004} 1005 1006/** 1007 * fb_delete_videomode - removed videomode entry from modelist 1008 * @mode: videomode to remove 1009 * @head: struct list_head of modelist 1010 * 1011 * NOTES: 1012 * Will remove all matching mode entries 1013 */ 1014void fb_delete_videomode(const struct fb_videomode *mode, 1015 struct list_head *head) 1016{ 1017 struct list_head *pos, *n; 1018 struct fb_modelist *modelist; 1019 struct fb_videomode *m; 1020 1021 list_for_each_safe(pos, n, head) { 1022 modelist = list_entry(pos, struct fb_modelist, list); 1023 m = &modelist->mode; 1024 if (fb_mode_is_equal(m, mode)) { 1025 list_del(pos); 1026 kfree(pos); 1027 } 1028 } 1029} 1030 1031/** 1032 * fb_destroy_modelist - destroy modelist 1033 * @head: struct list_head of modelist 1034 */ 1035void fb_destroy_modelist(struct list_head *head) 1036{ 1037 struct list_head *pos, *n; 1038 1039 list_for_each_safe(pos, n, head) { 1040 list_del(pos); 1041 kfree(pos); 1042 } 1043} 1044EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1045 1046/** 1047 * fb_videomode_to_modelist - convert mode array to mode list 1048 * @modedb: array of struct fb_videomode 1049 * @num: number of entries in array 1050 * @head: struct list_head of modelist 1051 */ 1052void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1053 struct list_head *head) 1054{ 1055 int i; 1056 1057 INIT_LIST_HEAD(head); 1058 1059 for (i = 0; i < num; i++) { 1060 if (fb_add_videomode(&modedb[i], head)) 1061 return; 1062 } 1063} 1064 1065const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1066 struct list_head *head) 1067{ 1068 struct list_head *pos; 1069 struct fb_modelist *modelist; 1070 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1071 int first = 0; 1072 1073 if (!head->prev || !head->next || list_empty(head)) 1074 goto finished; 1075 1076 /* get the first detailed mode and the very first mode */ 1077 list_for_each(pos, head) { 1078 modelist = list_entry(pos, struct fb_modelist, list); 1079 m = &modelist->mode; 1080 1081 if (!first) { 1082 m1 = m; 1083 first = 1; 1084 } 1085 1086 if (m->flag & FB_MODE_IS_FIRST) { 1087 md = m; 1088 break; 1089 } 1090 } 1091 1092 /* first detailed timing is preferred */ 1093 if (specs->misc & FB_MISC_1ST_DETAIL) { 1094 best = md; 1095 goto finished; 1096 } 1097 1098 /* find best mode based on display width and height */ 1099 if (specs->max_x && specs->max_y) { 1100 struct fb_var_screeninfo var; 1101 1102 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1103 var.xres = (specs->max_x * 7200)/254; 1104 var.yres = (specs->max_y * 7200)/254; 1105 m = fb_find_best_mode(&var, head); 1106 if (m) { 1107 best = m; 1108 goto finished; 1109 } 1110 } 1111 1112 /* use first detailed mode */ 1113 if (md) { 1114 best = md; 1115 goto finished; 1116 } 1117 1118 /* last resort, use the very first mode */ 1119 best = m1; 1120finished: 1121 return best; 1122} 1123EXPORT_SYMBOL(fb_find_best_display); 1124 1125EXPORT_SYMBOL(fb_videomode_to_var); 1126EXPORT_SYMBOL(fb_var_to_videomode); 1127EXPORT_SYMBOL(fb_mode_is_equal); 1128EXPORT_SYMBOL(fb_add_videomode); 1129EXPORT_SYMBOL(fb_match_mode); 1130EXPORT_SYMBOL(fb_find_best_mode); 1131EXPORT_SYMBOL(fb_find_nearest_mode); 1132EXPORT_SYMBOL(fb_videomode_to_modelist); 1133EXPORT_SYMBOL(fb_find_mode); 1134EXPORT_SYMBOL(fb_find_mode_cvt); 1135