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 const char *fb_mode_option; 33 EXPORT_SYMBOL_GPL(fb_mode_option); 34 35 /* 36 * Standard video mode definitions (taken from XFree86) 37 */ 38 39 static const struct fb_videomode modedb[] = { 40 41 /* 640x400 @ 70 Hz, 31.5 kHz hsync */ 42 { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0, 43 FB_VMODE_NONINTERLACED }, 44 45 /* 640x480 @ 60 Hz, 31.5 kHz hsync */ 46 { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0, 47 FB_VMODE_NONINTERLACED }, 48 49 /* 800x600 @ 56 Hz, 35.15 kHz hsync */ 50 { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0, 51 FB_VMODE_NONINTERLACED }, 52 53 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ 54 { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0, 55 FB_VMODE_INTERLACED }, 56 57 /* 640x400 @ 85 Hz, 37.86 kHz hsync */ 58 { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, 59 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED }, 60 61 /* 640x480 @ 72 Hz, 36.5 kHz hsync */ 62 { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0, 63 FB_VMODE_NONINTERLACED }, 64 65 /* 640x480 @ 75 Hz, 37.50 kHz hsync */ 66 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 67 FB_VMODE_NONINTERLACED }, 68 69 /* 800x600 @ 60 Hz, 37.8 kHz hsync */ 70 { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, 71 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 72 FB_VMODE_NONINTERLACED }, 73 74 /* 640x480 @ 85 Hz, 43.27 kHz hsync */ 75 { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0, 76 FB_VMODE_NONINTERLACED }, 77 78 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ 79 { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0, 80 FB_VMODE_INTERLACED }, 81 /* 800x600 @ 72 Hz, 48.0 kHz hsync */ 82 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 83 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 84 FB_VMODE_NONINTERLACED }, 85 86 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ 87 { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0, 88 FB_VMODE_NONINTERLACED }, 89 90 /* 640x480 @ 100 Hz, 53.01 kHz hsync */ 91 { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0, 92 FB_VMODE_NONINTERLACED }, 93 94 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ 95 { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0, 96 FB_VMODE_NONINTERLACED }, 97 98 /* 800x600 @ 85 Hz, 55.84 kHz hsync */ 99 { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0, 100 FB_VMODE_NONINTERLACED }, 101 102 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ 103 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 104 FB_VMODE_NONINTERLACED }, 105 106 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ 107 { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0, 108 FB_VMODE_INTERLACED }, 109 110 /* 800x600 @ 100 Hz, 64.02 kHz hsync */ 111 { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0, 112 FB_VMODE_NONINTERLACED }, 113 114 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ 115 { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0, 116 FB_VMODE_NONINTERLACED }, 117 118 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ 119 { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0, 120 FB_VMODE_NONINTERLACED }, 121 122 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ 123 { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0, 124 FB_VMODE_NONINTERLACED }, 125 126 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ 127 { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0, 128 FB_VMODE_NONINTERLACED }, 129 130 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ 131 { NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, 132 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 133 FB_VMODE_NONINTERLACED }, 134 135 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ 136 { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, 137 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 138 FB_VMODE_NONINTERLACED }, 139 140 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ 141 { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0, 142 FB_VMODE_NONINTERLACED }, 143 144 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ 145 { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0, 146 FB_VMODE_NONINTERLACED }, 147 148 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ 149 { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0, 150 FB_VMODE_NONINTERLACED }, 151 152 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ 153 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 154 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 155 FB_VMODE_NONINTERLACED }, 156 157 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ 158 { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0, 159 FB_VMODE_NONINTERLACED }, 160 161 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ 162 { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0, 163 FB_VMODE_NONINTERLACED }, 164 165 /* 1024x768 @ 100Hz, 80.21 kHz hsync */ 166 { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0, 167 FB_VMODE_NONINTERLACED }, 168 169 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ 170 { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0, 171 FB_VMODE_NONINTERLACED }, 172 173 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ 174 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0, 175 FB_VMODE_NONINTERLACED }, 176 177 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ 178 { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0, 179 FB_VMODE_NONINTERLACED }, 180 181 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ 182 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 183 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 184 FB_VMODE_NONINTERLACED }, 185 186 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ 187 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 188 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 189 FB_VMODE_NONINTERLACED }, 190 191 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ 192 { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, 193 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 194 FB_VMODE_NONINTERLACED }, 195 196 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ 197 { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, 198 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 199 FB_VMODE_NONINTERLACED }, 200 201 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ 202 { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0, 203 FB_VMODE_NONINTERLACED }, 204 205 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ 206 { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, 207 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 208 FB_VMODE_NONINTERLACED }, 209 210 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ 211 { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, 212 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 213 FB_VMODE_NONINTERLACED }, 214 215 /* 512x384 @ 78 Hz, 31.50 kHz hsync */ 216 { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 217 FB_VMODE_NONINTERLACED }, 218 219 /* 512x384 @ 85 Hz, 34.38 kHz hsync */ 220 { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0, 221 FB_VMODE_NONINTERLACED }, 222 223 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ 224 { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 225 FB_VMODE_DOUBLE }, 226 227 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ 228 { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0, 229 FB_VMODE_DOUBLE }, 230 231 /* 320x240 @ 72 Hz, 36.5 kHz hsync */ 232 { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 233 FB_VMODE_DOUBLE }, 234 235 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ 236 { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0, 237 FB_VMODE_DOUBLE }, 238 239 /* 400x300 @ 60 Hz, 37.8 kHz hsync */ 240 { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0, 241 FB_VMODE_DOUBLE }, 242 243 /* 400x300 @ 72 Hz, 48.0 kHz hsync */ 244 { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0, 245 FB_VMODE_DOUBLE }, 246 247 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ 248 { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0, 249 FB_VMODE_DOUBLE }, 250 251 /* 480x300 @ 60 Hz, 37.8 kHz hsync */ 252 { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0, 253 FB_VMODE_DOUBLE }, 254 255 /* 480x300 @ 63 Hz, 39.6 kHz hsync */ 256 { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0, 257 FB_VMODE_DOUBLE }, 258 259 /* 480x300 @ 72 Hz, 48.0 kHz hsync */ 260 { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0, 261 FB_VMODE_DOUBLE }, 262 263 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ 264 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, 265 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 266 FB_VMODE_NONINTERLACED }, 267 268 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ 269 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, 270 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 271 FB_VMODE_NONINTERLACED }, 272 273 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ 274 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0, 275 FB_VMODE_NONINTERLACED }, 276 277 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ 278 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0, 279 FB_VMODE_NONINTERLACED }, 280 281 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 282 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0, 283 FB_VMODE_INTERLACED }, 284 285 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 286 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0, 287 FB_VMODE_INTERLACED }, 288 289 /* 864x480 @ 60 Hz, 35.15 kHz hsync */ 290 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0, 291 0, FB_VMODE_NONINTERLACED }, 292 }; 293 294 #ifdef CONFIG_FB_MODE_HELPERS 295 const struct fb_videomode cea_modes[64] = { 296 /* #1: 640x480p@59.94/60Hz */ 297 [1] = { 298 NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0, 299 FB_VMODE_NONINTERLACED, 0, 300 }, 301 /* #3: 720x480p@59.94/60Hz */ 302 [3] = { 303 NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0, 304 FB_VMODE_NONINTERLACED, 0, 305 }, 306 /* #5: 1920x1080i@59.94/60Hz */ 307 [5] = { 308 NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5, 309 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 310 FB_VMODE_INTERLACED, 0, 311 }, 312 /* #7: 720(1440)x480iH@59.94/60Hz */ 313 [7] = { 314 NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0, 315 FB_VMODE_INTERLACED, 0, 316 }, 317 /* #9: 720(1440)x240pH@59.94/60Hz */ 318 [9] = { 319 NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0, 320 FB_VMODE_NONINTERLACED, 0, 321 }, 322 /* #18: 720x576pH@50Hz */ 323 [18] = { 324 NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0, 325 FB_VMODE_NONINTERLACED, 0, 326 }, 327 /* #19: 1280x720p@50Hz */ 328 [19] = { 329 NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5, 330 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 331 FB_VMODE_NONINTERLACED, 0, 332 }, 333 /* #20: 1920x1080i@50Hz */ 334 [20] = { 335 NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5, 336 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 337 FB_VMODE_INTERLACED, 0, 338 }, 339 /* #32: 1920x1080p@23.98/24Hz */ 340 [32] = { 341 NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5, 342 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 343 FB_VMODE_NONINTERLACED, 0, 344 }, 345 /* #35: (2880)x480p4x@59.94/60Hz */ 346 [35] = { 347 NULL, 60, 2880, 480, 9250, 240, 64, 30, 9, 248, 6, 0, 348 FB_VMODE_NONINTERLACED, 0, 349 }, 350 }; 351 352 const struct fb_videomode vesa_modes[] = { 353 /* 0 640x350-85 VESA */ 354 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 355 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 356 /* 1 640x400-85 VESA */ 357 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 358 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 359 /* 2 720x400-85 VESA */ 360 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 361 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 362 /* 3 640x480-60 VESA */ 363 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 364 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 365 /* 4 640x480-72 VESA */ 366 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 367 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 368 /* 5 640x480-75 VESA */ 369 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 370 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 371 /* 6 640x480-85 VESA */ 372 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 373 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 374 /* 7 800x600-56 VESA */ 375 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 376 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 377 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 378 /* 8 800x600-60 VESA */ 379 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 380 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 381 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 382 /* 9 800x600-72 VESA */ 383 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 384 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 385 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 386 /* 10 800x600-75 VESA */ 387 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 388 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 389 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 390 /* 11 800x600-85 VESA */ 391 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 392 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 393 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 394 /* 12 1024x768i-43 VESA */ 395 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 396 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 397 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 398 /* 13 1024x768-60 VESA */ 399 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 400 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 401 /* 14 1024x768-70 VESA */ 402 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 403 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 404 /* 15 1024x768-75 VESA */ 405 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 406 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 407 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 408 /* 16 1024x768-85 VESA */ 409 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 410 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 411 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 412 /* 17 1152x864-75 VESA */ 413 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 414 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 415 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 416 /* 18 1280x960-60 VESA */ 417 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 418 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 419 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 420 /* 19 1280x960-85 VESA */ 421 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 422 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 423 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 424 /* 20 1280x1024-60 VESA */ 425 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 426 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 427 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 428 /* 21 1280x1024-75 VESA */ 429 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 430 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 431 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 432 /* 22 1280x1024-85 VESA */ 433 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 434 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 435 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 436 /* 23 1600x1200-60 VESA */ 437 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 438 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 439 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 440 /* 24 1600x1200-65 VESA */ 441 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 442 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 443 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 444 /* 25 1600x1200-70 VESA */ 445 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 446 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 447 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 448 /* 26 1600x1200-75 VESA */ 449 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 450 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 451 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 452 /* 27 1600x1200-85 VESA */ 453 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, 454 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 455 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 456 /* 28 1792x1344-60 VESA */ 457 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 458 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 459 /* 29 1792x1344-75 VESA */ 460 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 461 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 462 /* 30 1856x1392-60 VESA */ 463 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 464 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 465 /* 31 1856x1392-75 VESA */ 466 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 467 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 468 /* 32 1920x1440-60 VESA */ 469 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 470 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 471 /* 33 1920x1440-75 VESA */ 472 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 473 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 474 }; 475 EXPORT_SYMBOL(vesa_modes); 476 #endif /* CONFIG_FB_MODE_HELPERS */ 477 478 /** 479 * fb_try_mode - test a video mode 480 * @var: frame buffer user defined part of display 481 * @info: frame buffer info structure 482 * @mode: frame buffer video mode structure 483 * @bpp: color depth in bits per pixel 484 * 485 * Tries a video mode to test it's validity for device @info. 486 * 487 * Returns 1 on success. 488 * 489 */ 490 491 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, 492 const struct fb_videomode *mode, unsigned int bpp) 493 { 494 int err = 0; 495 496 DPRINTK("Trying mode %s %dx%d-%d@%d\n", 497 mode->name ? mode->name : "noname", 498 mode->xres, mode->yres, bpp, mode->refresh); 499 var->xres = mode->xres; 500 var->yres = mode->yres; 501 var->xres_virtual = mode->xres; 502 var->yres_virtual = mode->yres; 503 var->xoffset = 0; 504 var->yoffset = 0; 505 var->bits_per_pixel = bpp; 506 var->activate |= FB_ACTIVATE_TEST; 507 var->pixclock = mode->pixclock; 508 var->left_margin = mode->left_margin; 509 var->right_margin = mode->right_margin; 510 var->upper_margin = mode->upper_margin; 511 var->lower_margin = mode->lower_margin; 512 var->hsync_len = mode->hsync_len; 513 var->vsync_len = mode->vsync_len; 514 var->sync = mode->sync; 515 var->vmode = mode->vmode; 516 if (info->fbops->fb_check_var) 517 err = info->fbops->fb_check_var(var, info); 518 var->activate &= ~FB_ACTIVATE_TEST; 519 return err; 520 } 521 522 /** 523 * fb_find_mode - finds a valid video mode 524 * @var: frame buffer user defined part of display 525 * @info: frame buffer info structure 526 * @mode_option: string video mode to find 527 * @db: video mode database 528 * @dbsize: size of @db 529 * @default_mode: default video mode to fall back to 530 * @default_bpp: default color depth in bits per pixel 531 * 532 * Finds a suitable video mode, starting with the specified mode 533 * in @mode_option with fallback to @default_mode. If 534 * @default_mode fails, all modes in the video mode database will 535 * be tried. 536 * 537 * Valid mode specifiers for @mode_option: 538 * 539 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or 540 * <name>[-<bpp>][@<refresh>] 541 * 542 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 543 * <name> a string. 544 * 545 * If 'M' is present after yres (and before refresh/bpp if present), 546 * the function will compute the timings using VESA(tm) Coordinated 547 * Video Timings (CVT). If 'R' is present after 'M', will compute with 548 * reduced blanking (for flatpanels). If 'i' is present, compute 549 * interlaced mode. If 'm' is present, add margins equal to 1.8% 550 * of xres rounded down to 8 pixels, and 1.8% of yres. The char 551 * 'i' and 'm' must be after 'M' and 'R'. Example: 552 * 553 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. 554 * 555 * NOTE: The passed struct @var is _not_ cleared! This allows you 556 * to supply values for e.g. the grayscale and accel_flags fields. 557 * 558 * Returns zero for failure, 1 if using specified @mode_option, 559 * 2 if using specified @mode_option with an ignored refresh rate, 560 * 3 if default mode is used, 4 if fall back to any valid mode. 561 * 562 */ 563 564 int fb_find_mode(struct fb_var_screeninfo *var, 565 struct fb_info *info, const char *mode_option, 566 const struct fb_videomode *db, unsigned int dbsize, 567 const struct fb_videomode *default_mode, 568 unsigned int default_bpp) 569 { 570 int i; 571 572 /* Set up defaults */ 573 if (!db) { 574 db = modedb; 575 dbsize = ARRAY_SIZE(modedb); 576 } 577 578 if (!default_mode) 579 default_mode = &db[0]; 580 581 if (!default_bpp) 582 default_bpp = 8; 583 584 /* Did the user specify a video mode? */ 585 if (!mode_option) 586 mode_option = fb_mode_option; 587 if (mode_option) { 588 const char *name = mode_option; 589 unsigned int namelen = strlen(name); 590 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 591 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 592 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0; 593 int margins = 0; 594 u32 best, diff, tdiff; 595 596 for (i = namelen-1; i >= 0; i--) { 597 switch (name[i]) { 598 case '@': 599 namelen = i; 600 if (!refresh_specified && !bpp_specified && 601 !yres_specified) { 602 refresh = simple_strtol(&name[i+1], NULL, 603 10); 604 refresh_specified = 1; 605 if (cvt || rb) 606 cvt = 0; 607 } else 608 goto done; 609 break; 610 case '-': 611 namelen = i; 612 if (!bpp_specified && !yres_specified) { 613 bpp = simple_strtol(&name[i+1], NULL, 614 10); 615 bpp_specified = 1; 616 if (cvt || rb) 617 cvt = 0; 618 } else 619 goto done; 620 break; 621 case 'x': 622 if (!yres_specified) { 623 yres = simple_strtol(&name[i+1], NULL, 624 10); 625 yres_specified = 1; 626 } else 627 goto done; 628 break; 629 case '0' ... '9': 630 break; 631 case 'M': 632 if (!yres_specified) 633 cvt = 1; 634 break; 635 case 'R': 636 if (!cvt) 637 rb = 1; 638 break; 639 case 'm': 640 if (!cvt) 641 margins = 1; 642 break; 643 case 'i': 644 if (!cvt) 645 interlace = 1; 646 break; 647 default: 648 goto done; 649 } 650 } 651 if (i < 0 && yres_specified) { 652 xres = simple_strtol(name, NULL, 10); 653 res_specified = 1; 654 } 655 done: 656 if (cvt) { 657 struct fb_videomode cvt_mode; 658 int ret; 659 660 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 661 (refresh) ? refresh : 60, 662 (rb) ? " reduced blanking" : "", 663 (margins) ? " with margins" : "", 664 (interlace) ? " interlaced" : ""); 665 666 memset(&cvt_mode, 0, sizeof(cvt_mode)); 667 cvt_mode.xres = xres; 668 cvt_mode.yres = yres; 669 cvt_mode.refresh = (refresh) ? refresh : 60; 670 671 if (interlace) 672 cvt_mode.vmode |= FB_VMODE_INTERLACED; 673 else 674 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 675 676 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 677 678 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 679 DPRINTK("modedb CVT: CVT mode ok\n"); 680 return 1; 681 } 682 683 DPRINTK("CVT mode invalid, getting mode from database\n"); 684 } 685 686 DPRINTK("Trying specified video mode%s %ix%i\n", 687 refresh_specified ? "" : " (ignoring refresh rate)", 688 xres, yres); 689 690 if (!refresh_specified) { 691 /* 692 * If the caller has provided a custom mode database and 693 * a valid monspecs structure, we look for the mode with 694 * the highest refresh rate. Otherwise we play it safe 695 * it and try to find a mode with a refresh rate closest 696 * to the standard 60 Hz. 697 */ 698 if (db != modedb && 699 info->monspecs.vfmin && info->monspecs.vfmax && 700 info->monspecs.hfmin && info->monspecs.hfmax && 701 info->monspecs.dclkmax) { 702 refresh = 1000; 703 } else { 704 refresh = 60; 705 } 706 } 707 708 diff = -1; 709 best = -1; 710 for (i = 0; i < dbsize; i++) { 711 if ((name_matches(db[i], name, namelen) || 712 (res_specified && res_matches(db[i], xres, yres))) && 713 !fb_try_mode(var, info, &db[i], bpp)) { 714 if (refresh_specified && db[i].refresh == refresh) 715 return 1; 716 717 if (abs(db[i].refresh - refresh) < diff) { 718 diff = abs(db[i].refresh - refresh); 719 best = i; 720 } 721 } 722 } 723 if (best != -1) { 724 fb_try_mode(var, info, &db[best], bpp); 725 return (refresh_specified) ? 2 : 1; 726 } 727 728 diff = 2 * (xres + yres); 729 best = -1; 730 DPRINTK("Trying best-fit modes\n"); 731 for (i = 0; i < dbsize; i++) { 732 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 733 if (!fb_try_mode(var, info, &db[i], bpp)) { 734 tdiff = abs(db[i].xres - xres) + 735 abs(db[i].yres - yres); 736 737 /* 738 * Penalize modes with resolutions smaller 739 * than requested. 740 */ 741 if (xres > db[i].xres || yres > db[i].yres) 742 tdiff += xres + yres; 743 744 if (diff > tdiff) { 745 diff = tdiff; 746 best = i; 747 } 748 } 749 } 750 if (best != -1) { 751 fb_try_mode(var, info, &db[best], bpp); 752 return 5; 753 } 754 } 755 756 DPRINTK("Trying default video mode\n"); 757 if (!fb_try_mode(var, info, default_mode, default_bpp)) 758 return 3; 759 760 DPRINTK("Trying all modes\n"); 761 for (i = 0; i < dbsize; i++) 762 if (!fb_try_mode(var, info, &db[i], default_bpp)) 763 return 4; 764 765 DPRINTK("No valid mode found\n"); 766 return 0; 767 } 768 769 /** 770 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 771 * @mode: pointer to struct fb_videomode 772 * @var: pointer to struct fb_var_screeninfo 773 */ 774 void fb_var_to_videomode(struct fb_videomode *mode, 775 const struct fb_var_screeninfo *var) 776 { 777 u32 pixclock, hfreq, htotal, vtotal; 778 779 mode->name = NULL; 780 mode->xres = var->xres; 781 mode->yres = var->yres; 782 mode->pixclock = var->pixclock; 783 mode->hsync_len = var->hsync_len; 784 mode->vsync_len = var->vsync_len; 785 mode->left_margin = var->left_margin; 786 mode->right_margin = var->right_margin; 787 mode->upper_margin = var->upper_margin; 788 mode->lower_margin = var->lower_margin; 789 mode->sync = var->sync; 790 mode->vmode = var->vmode & FB_VMODE_MASK; 791 mode->flag = FB_MODE_IS_FROM_VAR; 792 mode->refresh = 0; 793 794 if (!var->pixclock) 795 return; 796 797 pixclock = PICOS2KHZ(var->pixclock) * 1000; 798 799 htotal = var->xres + var->right_margin + var->hsync_len + 800 var->left_margin; 801 vtotal = var->yres + var->lower_margin + var->vsync_len + 802 var->upper_margin; 803 804 if (var->vmode & FB_VMODE_INTERLACED) 805 vtotal /= 2; 806 if (var->vmode & FB_VMODE_DOUBLE) 807 vtotal *= 2; 808 809 hfreq = pixclock/htotal; 810 mode->refresh = hfreq/vtotal; 811 } 812 813 /** 814 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 815 * @var: pointer to struct fb_var_screeninfo 816 * @mode: pointer to struct fb_videomode 817 */ 818 void fb_videomode_to_var(struct fb_var_screeninfo *var, 819 const struct fb_videomode *mode) 820 { 821 var->xres = mode->xres; 822 var->yres = mode->yres; 823 var->xres_virtual = mode->xres; 824 var->yres_virtual = mode->yres; 825 var->xoffset = 0; 826 var->yoffset = 0; 827 var->pixclock = mode->pixclock; 828 var->left_margin = mode->left_margin; 829 var->right_margin = mode->right_margin; 830 var->upper_margin = mode->upper_margin; 831 var->lower_margin = mode->lower_margin; 832 var->hsync_len = mode->hsync_len; 833 var->vsync_len = mode->vsync_len; 834 var->sync = mode->sync; 835 var->vmode = mode->vmode & FB_VMODE_MASK; 836 } 837 838 /** 839 * fb_mode_is_equal - compare 2 videomodes 840 * @mode1: first videomode 841 * @mode2: second videomode 842 * 843 * RETURNS: 844 * 1 if equal, 0 if not 845 */ 846 int fb_mode_is_equal(const struct fb_videomode *mode1, 847 const struct fb_videomode *mode2) 848 { 849 return (mode1->xres == mode2->xres && 850 mode1->yres == mode2->yres && 851 mode1->pixclock == mode2->pixclock && 852 mode1->hsync_len == mode2->hsync_len && 853 mode1->vsync_len == mode2->vsync_len && 854 mode1->left_margin == mode2->left_margin && 855 mode1->right_margin == mode2->right_margin && 856 mode1->upper_margin == mode2->upper_margin && 857 mode1->lower_margin == mode2->lower_margin && 858 mode1->sync == mode2->sync && 859 mode1->vmode == mode2->vmode); 860 } 861 862 /** 863 * fb_find_best_mode - find best matching videomode 864 * @var: pointer to struct fb_var_screeninfo 865 * @head: pointer to struct list_head of modelist 866 * 867 * RETURNS: 868 * struct fb_videomode, NULL if none found 869 * 870 * IMPORTANT: 871 * This function assumes that all modelist entries in 872 * info->modelist are valid. 873 * 874 * NOTES: 875 * Finds best matching videomode which has an equal or greater dimension than 876 * var->xres and var->yres. If more than 1 videomode is found, will return 877 * the videomode with the highest refresh rate 878 */ 879 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 880 struct list_head *head) 881 { 882 struct list_head *pos; 883 struct fb_modelist *modelist; 884 struct fb_videomode *mode, *best = NULL; 885 u32 diff = -1; 886 887 list_for_each(pos, head) { 888 u32 d; 889 890 modelist = list_entry(pos, struct fb_modelist, list); 891 mode = &modelist->mode; 892 893 if (mode->xres >= var->xres && mode->yres >= var->yres) { 894 d = (mode->xres - var->xres) + 895 (mode->yres - var->yres); 896 if (diff > d) { 897 diff = d; 898 best = mode; 899 } else if (diff == d && best && 900 mode->refresh > best->refresh) 901 best = mode; 902 } 903 } 904 return best; 905 } 906 907 /** 908 * fb_find_nearest_mode - find closest videomode 909 * 910 * @mode: pointer to struct fb_videomode 911 * @head: pointer to modelist 912 * 913 * Finds best matching videomode, smaller or greater in dimension. 914 * If more than 1 videomode is found, will return the videomode with 915 * the closest refresh rate. 916 */ 917 const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 918 struct list_head *head) 919 { 920 struct list_head *pos; 921 struct fb_modelist *modelist; 922 struct fb_videomode *cmode, *best = NULL; 923 u32 diff = -1, diff_refresh = -1; 924 925 list_for_each(pos, head) { 926 u32 d; 927 928 modelist = list_entry(pos, struct fb_modelist, list); 929 cmode = &modelist->mode; 930 931 d = abs(cmode->xres - mode->xres) + 932 abs(cmode->yres - mode->yres); 933 if (diff > d) { 934 diff = d; 935 diff_refresh = abs(cmode->refresh - mode->refresh); 936 best = cmode; 937 } else if (diff == d) { 938 d = abs(cmode->refresh - mode->refresh); 939 if (diff_refresh > d) { 940 diff_refresh = d; 941 best = cmode; 942 } 943 } 944 } 945 946 return best; 947 } 948 949 /** 950 * fb_match_mode - find a videomode which exactly matches the timings in var 951 * @var: pointer to struct fb_var_screeninfo 952 * @head: pointer to struct list_head of modelist 953 * 954 * RETURNS: 955 * struct fb_videomode, NULL if none found 956 */ 957 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 958 struct list_head *head) 959 { 960 struct list_head *pos; 961 struct fb_modelist *modelist; 962 struct fb_videomode *m, mode; 963 964 fb_var_to_videomode(&mode, var); 965 list_for_each(pos, head) { 966 modelist = list_entry(pos, struct fb_modelist, list); 967 m = &modelist->mode; 968 if (fb_mode_is_equal(m, &mode)) 969 return m; 970 } 971 return NULL; 972 } 973 974 /** 975 * fb_add_videomode - adds videomode entry to modelist 976 * @mode: videomode to add 977 * @head: struct list_head of modelist 978 * 979 * NOTES: 980 * Will only add unmatched mode entries 981 */ 982 int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 983 { 984 struct list_head *pos; 985 struct fb_modelist *modelist; 986 struct fb_videomode *m; 987 int found = 0; 988 989 list_for_each(pos, head) { 990 modelist = list_entry(pos, struct fb_modelist, list); 991 m = &modelist->mode; 992 if (fb_mode_is_equal(m, mode)) { 993 found = 1; 994 break; 995 } 996 } 997 if (!found) { 998 modelist = kmalloc(sizeof(struct fb_modelist), 999 GFP_KERNEL); 1000 1001 if (!modelist) 1002 return -ENOMEM; 1003 modelist->mode = *mode; 1004 list_add(&modelist->list, head); 1005 } 1006 return 0; 1007 } 1008 1009 /** 1010 * fb_delete_videomode - removed videomode entry from modelist 1011 * @mode: videomode to remove 1012 * @head: struct list_head of modelist 1013 * 1014 * NOTES: 1015 * Will remove all matching mode entries 1016 */ 1017 void fb_delete_videomode(const struct fb_videomode *mode, 1018 struct list_head *head) 1019 { 1020 struct list_head *pos, *n; 1021 struct fb_modelist *modelist; 1022 struct fb_videomode *m; 1023 1024 list_for_each_safe(pos, n, head) { 1025 modelist = list_entry(pos, struct fb_modelist, list); 1026 m = &modelist->mode; 1027 if (fb_mode_is_equal(m, mode)) { 1028 list_del(pos); 1029 kfree(pos); 1030 } 1031 } 1032 } 1033 1034 /** 1035 * fb_destroy_modelist - destroy modelist 1036 * @head: struct list_head of modelist 1037 */ 1038 void fb_destroy_modelist(struct list_head *head) 1039 { 1040 struct list_head *pos, *n; 1041 1042 list_for_each_safe(pos, n, head) { 1043 list_del(pos); 1044 kfree(pos); 1045 } 1046 } 1047 EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1048 1049 /** 1050 * fb_videomode_to_modelist - convert mode array to mode list 1051 * @modedb: array of struct fb_videomode 1052 * @num: number of entries in array 1053 * @head: struct list_head of modelist 1054 */ 1055 void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1056 struct list_head *head) 1057 { 1058 int i; 1059 1060 INIT_LIST_HEAD(head); 1061 1062 for (i = 0; i < num; i++) { 1063 if (fb_add_videomode(&modedb[i], head)) 1064 return; 1065 } 1066 } 1067 1068 const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1069 struct list_head *head) 1070 { 1071 struct list_head *pos; 1072 struct fb_modelist *modelist; 1073 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1074 int first = 0; 1075 1076 if (!head->prev || !head->next || list_empty(head)) 1077 goto finished; 1078 1079 /* get the first detailed mode and the very first mode */ 1080 list_for_each(pos, head) { 1081 modelist = list_entry(pos, struct fb_modelist, list); 1082 m = &modelist->mode; 1083 1084 if (!first) { 1085 m1 = m; 1086 first = 1; 1087 } 1088 1089 if (m->flag & FB_MODE_IS_FIRST) { 1090 md = m; 1091 break; 1092 } 1093 } 1094 1095 /* first detailed timing is preferred */ 1096 if (specs->misc & FB_MISC_1ST_DETAIL) { 1097 best = md; 1098 goto finished; 1099 } 1100 1101 /* find best mode based on display width and height */ 1102 if (specs->max_x && specs->max_y) { 1103 struct fb_var_screeninfo var; 1104 1105 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1106 var.xres = (specs->max_x * 7200)/254; 1107 var.yres = (specs->max_y * 7200)/254; 1108 m = fb_find_best_mode(&var, head); 1109 if (m) { 1110 best = m; 1111 goto finished; 1112 } 1113 } 1114 1115 /* use first detailed mode */ 1116 if (md) { 1117 best = md; 1118 goto finished; 1119 } 1120 1121 /* last resort, use the very first mode */ 1122 best = m1; 1123 finished: 1124 return best; 1125 } 1126 EXPORT_SYMBOL(fb_find_best_display); 1127 1128 EXPORT_SYMBOL(fb_videomode_to_var); 1129 EXPORT_SYMBOL(fb_var_to_videomode); 1130 EXPORT_SYMBOL(fb_mode_is_equal); 1131 EXPORT_SYMBOL(fb_add_videomode); 1132 EXPORT_SYMBOL(fb_match_mode); 1133 EXPORT_SYMBOL(fb_find_best_mode); 1134 EXPORT_SYMBOL(fb_find_nearest_mode); 1135 EXPORT_SYMBOL(fb_videomode_to_modelist); 1136 EXPORT_SYMBOL(fb_find_mode); 1137 EXPORT_SYMBOL(fb_find_mode_cvt); 1138