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modedb.c
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linux-6.19.14/drivers/video/fbdev/core/modedb.c
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/export.h> 15#include <linux/module.h> 16#include <linux/slab.h> 17#include <linux/fb.h> 18#include <linux/kernel.h> 19 20#undef DEBUG 21 22#define name_matches(v, s, l) \ 23 ((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l)) 24#define res_matches(v, x, y) \ 25 ((v).xres == (x) && (v).yres == (y)) 26 27#ifdef DEBUG 28#define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args) 29#else 30#define DPRINTK(fmt, args...) 31#endif 32 33/* 34 * Standard video mode definitions (taken from XFree86) 35 */ 36 37static const struct fb_videomode modedb[] = { 38 39 /* 640x400 @ 70 Hz, 31.5 kHz hsync */ 40 { NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, 0, 41 FB_VMODE_NONINTERLACED }, 42 43 /* 640x480 @ 60 Hz, 31.5 kHz hsync */ 44 { NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, 0, 45 FB_VMODE_NONINTERLACED }, 46 47 /* 800x600 @ 56 Hz, 35.15 kHz hsync */ 48 { NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, 0, 49 FB_VMODE_NONINTERLACED }, 50 51 /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ 52 { NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, 0, 53 FB_VMODE_INTERLACED }, 54 55 /* 640x400 @ 85 Hz, 37.86 kHz hsync */ 56 { NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, 57 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED }, 58 59 /* 640x480 @ 72 Hz, 36.5 kHz hsync */ 60 { NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, 0, 61 FB_VMODE_NONINTERLACED }, 62 63 /* 640x480 @ 75 Hz, 37.50 kHz hsync */ 64 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 65 FB_VMODE_NONINTERLACED }, 66 67 /* 800x600 @ 60 Hz, 37.8 kHz hsync */ 68 { NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, 69 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 70 FB_VMODE_NONINTERLACED }, 71 72 /* 640x480 @ 85 Hz, 43.27 kHz hsync */ 73 { NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, 0, 74 FB_VMODE_NONINTERLACED }, 75 76 /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ 77 { NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, 0, 78 FB_VMODE_INTERLACED }, 79 /* 800x600 @ 72 Hz, 48.0 kHz hsync */ 80 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 81 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 82 FB_VMODE_NONINTERLACED }, 83 84 /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ 85 { NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, 0, 86 FB_VMODE_NONINTERLACED }, 87 88 /* 640x480 @ 100 Hz, 53.01 kHz hsync */ 89 { NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, 0, 90 FB_VMODE_NONINTERLACED }, 91 92 /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ 93 { NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, 0, 94 FB_VMODE_NONINTERLACED }, 95 96 /* 800x600 @ 85 Hz, 55.84 kHz hsync */ 97 { NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, 0, 98 FB_VMODE_NONINTERLACED }, 99 100 /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ 101 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 102 FB_VMODE_NONINTERLACED }, 103 104 /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ 105 { NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, 0, 106 FB_VMODE_INTERLACED }, 107 108 /* 800x600 @ 100 Hz, 64.02 kHz hsync */ 109 { NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, 0, 110 FB_VMODE_NONINTERLACED }, 111 112 /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ 113 { NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, 0, 114 FB_VMODE_NONINTERLACED }, 115 116 /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ 117 { NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, 0, 118 FB_VMODE_NONINTERLACED }, 119 120 /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ 121 { NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, 0, 122 FB_VMODE_NONINTERLACED }, 123 124 /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ 125 { NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, 0, 126 FB_VMODE_NONINTERLACED }, 127 128 /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ 129 { NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, 130 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 131 FB_VMODE_NONINTERLACED }, 132 133 /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ 134 { NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, 135 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 136 FB_VMODE_NONINTERLACED }, 137 138 /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ 139 { NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, 0, 140 FB_VMODE_NONINTERLACED }, 141 142 /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ 143 { NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, 0, 144 FB_VMODE_NONINTERLACED }, 145 146 /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ 147 { NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, 0, 148 FB_VMODE_NONINTERLACED }, 149 150 /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ 151 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 152 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 153 FB_VMODE_NONINTERLACED }, 154 155 /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ 156 { NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, 0, 157 FB_VMODE_NONINTERLACED }, 158 159 /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ 160 { NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, 0, 161 FB_VMODE_NONINTERLACED }, 162 163 /* 1024x768 @ 100Hz, 80.21 kHz hsync */ 164 { NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, 0, 165 FB_VMODE_NONINTERLACED }, 166 167 /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ 168 { NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, 0, 169 FB_VMODE_NONINTERLACED }, 170 171 /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ 172 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 0, 173 FB_VMODE_NONINTERLACED }, 174 175 /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ 176 { NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, 0, 177 FB_VMODE_NONINTERLACED }, 178 179 /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ 180 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 181 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 182 FB_VMODE_NONINTERLACED }, 183 184 /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ 185 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 186 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 187 FB_VMODE_NONINTERLACED }, 188 189 /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ 190 { NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, 191 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 192 FB_VMODE_NONINTERLACED }, 193 194 /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ 195 { NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, 196 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 197 FB_VMODE_NONINTERLACED }, 198 199 /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ 200 { NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, 0, 201 FB_VMODE_NONINTERLACED }, 202 203 /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ 204 { NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, 205 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 206 FB_VMODE_NONINTERLACED }, 207 208 /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ 209 { NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, 210 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 211 FB_VMODE_NONINTERLACED }, 212 213 /* 512x384 @ 78 Hz, 31.50 kHz hsync */ 214 { NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 215 FB_VMODE_NONINTERLACED }, 216 217 /* 512x384 @ 85 Hz, 34.38 kHz hsync */ 218 { NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, 0, 219 FB_VMODE_NONINTERLACED }, 220 221 /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ 222 { NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 223 FB_VMODE_DOUBLE }, 224 225 /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ 226 { NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, 0, 227 FB_VMODE_DOUBLE }, 228 229 /* 320x240 @ 72 Hz, 36.5 kHz hsync */ 230 { NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 231 FB_VMODE_DOUBLE }, 232 233 /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ 234 { NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, 0, 235 FB_VMODE_DOUBLE }, 236 237 /* 400x300 @ 60 Hz, 37.8 kHz hsync */ 238 { NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, 0, 239 FB_VMODE_DOUBLE }, 240 241 /* 400x300 @ 72 Hz, 48.0 kHz hsync */ 242 { NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, 0, 243 FB_VMODE_DOUBLE }, 244 245 /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ 246 { NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, 0, 247 FB_VMODE_DOUBLE }, 248 249 /* 480x300 @ 60 Hz, 37.8 kHz hsync */ 250 { NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, 0, 251 FB_VMODE_DOUBLE }, 252 253 /* 480x300 @ 63 Hz, 39.6 kHz hsync */ 254 { NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, 0, 255 FB_VMODE_DOUBLE }, 256 257 /* 480x300 @ 72 Hz, 48.0 kHz hsync */ 258 { NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0, 259 FB_VMODE_DOUBLE }, 260 261 /* 1920x1080 @ 60 Hz, 67.3 kHz hsync */ 262 { NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5, 0, 263 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 264 FB_VMODE_NONINTERLACED }, 265 266 /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ 267 { NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, 268 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 269 FB_VMODE_NONINTERLACED }, 270 271 /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ 272 { NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, 273 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 274 FB_VMODE_NONINTERLACED }, 275 276 /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ 277 { NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, 0, 278 FB_VMODE_NONINTERLACED }, 279 280 /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ 281 { NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, 0, 282 FB_VMODE_NONINTERLACED }, 283 284 /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 285 { NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, 0, 286 FB_VMODE_INTERLACED }, 287 288 /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ 289 { NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, 0, 290 FB_VMODE_INTERLACED }, 291 292 /* 864x480 @ 60 Hz, 35.15 kHz hsync */ 293 { NULL, 60, 864, 480, 27777, 1, 1, 1, 1, 0, 0, 294 0, FB_VMODE_NONINTERLACED }, 295}; 296 297#ifdef CONFIG_FB_MODE_HELPERS 298const struct fb_videomode vesa_modes[] = { 299 /* 0 640x350-85 VESA */ 300 { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, 301 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, 302 /* 1 640x400-85 VESA */ 303 { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, 304 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 305 /* 2 720x400-85 VESA */ 306 { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, 307 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 308 /* 3 640x480-60 VESA */ 309 { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 310 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 311 /* 4 640x480-72 VESA */ 312 { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 313 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 314 /* 5 640x480-75 VESA */ 315 { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 316 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 317 /* 6 640x480-85 VESA */ 318 { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 319 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 320 /* 7 800x600-56 VESA */ 321 { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, 322 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 323 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 324 /* 8 800x600-60 VESA */ 325 { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, 326 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 327 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 328 /* 9 800x600-72 VESA */ 329 { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, 330 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 331 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 332 /* 10 800x600-75 VESA */ 333 { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, 334 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 335 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 336 /* 11 800x600-85 VESA */ 337 { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, 338 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 339 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 340 /* 12 1024x768i-43 VESA */ 341 { NULL, 43, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, 342 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 343 FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, 344 /* 13 1024x768-60 VESA */ 345 { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 346 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 347 /* 14 1024x768-70 VESA */ 348 { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 349 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 350 /* 15 1024x768-75 VESA */ 351 { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, 352 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 353 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 354 /* 16 1024x768-85 VESA */ 355 { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, 356 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 357 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 358 /* 17 1152x864-75 VESA */ 359 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, 360 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 361 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 362 /* 18 1280x960-60 VESA */ 363 { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, 364 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 365 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 366 /* 19 1280x960-85 VESA */ 367 { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, 368 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 369 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 370 /* 20 1280x1024-60 VESA */ 371 { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, 372 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 373 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 374 /* 21 1280x1024-75 VESA */ 375 { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, 376 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 377 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 378 /* 22 1280x1024-85 VESA */ 379 { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, 380 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 381 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 382 /* 23 1600x1200-60 VESA */ 383 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, 384 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 385 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 386 /* 24 1600x1200-65 VESA */ 387 { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, 388 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 389 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 390 /* 25 1600x1200-70 VESA */ 391 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, 392 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 393 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 394 /* 26 1600x1200-75 VESA */ 395 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, 396 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 397 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 398 /* 27 1600x1200-85 VESA */ 399 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, 400 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 401 FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 402 /* 28 1792x1344-60 VESA */ 403 { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, 404 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 405 /* 29 1792x1344-75 VESA */ 406 { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, 407 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 408 /* 30 1856x1392-60 VESA */ 409 { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, 410 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 411 /* 31 1856x1392-75 VESA */ 412 { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, 413 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 414 /* 32 1920x1440-60 VESA */ 415 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, 416 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 417 /* 33 1920x1440-75 VESA */ 418 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, 419 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 420 /* 34 1920x1200-60 RB VESA */ 421 { NULL, 60, 1920, 1200, 6493, 80, 48, 26, 3, 32, 6, 422 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 423 /* 35 1920x1200-60 VESA */ 424 { NULL, 60, 1920, 1200, 5174, 336, 136, 36, 3, 200, 6, 425 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 426 /* 36 1920x1200-75 VESA */ 427 { NULL, 75, 1920, 1200, 4077, 344, 136, 46, 3, 208, 6, 428 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 429 /* 37 1920x1200-85 VESA */ 430 { NULL, 85, 1920, 1200, 3555, 352, 144, 53, 3, 208, 6, 431 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 432 /* 38 2560x1600-60 RB VESA */ 433 { NULL, 60, 2560, 1600, 3724, 80, 48, 37, 3, 32, 6, 434 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 435 /* 39 2560x1600-60 VESA */ 436 { NULL, 60, 2560, 1600, 2869, 472, 192, 49, 3, 280, 6, 437 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 438 /* 40 2560x1600-75 VESA */ 439 { NULL, 75, 2560, 1600, 2256, 488, 208, 63, 3, 280, 6, 440 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 441 /* 41 2560x1600-85 VESA */ 442 { NULL, 85, 2560, 1600, 1979, 488, 208, 73, 3, 280, 6, 443 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 444 /* 42 2560x1600-120 RB VESA */ 445 { NULL, 120, 2560, 1600, 1809, 80, 48, 85, 3, 32, 6, 446 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, 447}; 448EXPORT_SYMBOL(vesa_modes); 449 450const struct dmt_videomode dmt_modes[DMT_SIZE] = { 451 { 0x01, 0x0000, 0x000000, &vesa_modes[0] }, 452 { 0x02, 0x3119, 0x000000, &vesa_modes[1] }, 453 { 0x03, 0x0000, 0x000000, &vesa_modes[2] }, 454 { 0x04, 0x3140, 0x000000, &vesa_modes[3] }, 455 { 0x05, 0x314c, 0x000000, &vesa_modes[4] }, 456 { 0x06, 0x314f, 0x000000, &vesa_modes[5] }, 457 { 0x07, 0x3159, 0x000000, &vesa_modes[6] }, 458 { 0x08, 0x0000, 0x000000, &vesa_modes[7] }, 459 { 0x09, 0x4540, 0x000000, &vesa_modes[8] }, 460 { 0x0a, 0x454c, 0x000000, &vesa_modes[9] }, 461 { 0x0b, 0x454f, 0x000000, &vesa_modes[10] }, 462 { 0x0c, 0x4559, 0x000000, &vesa_modes[11] }, 463 { 0x0d, 0x0000, 0x000000, NULL }, 464 { 0x0e, 0x0000, 0x000000, NULL }, 465 { 0x0f, 0x0000, 0x000000, &vesa_modes[12] }, 466 { 0x10, 0x6140, 0x000000, &vesa_modes[13] }, 467 { 0x11, 0x614a, 0x000000, &vesa_modes[14] }, 468 { 0x12, 0x614f, 0x000000, &vesa_modes[15] }, 469 { 0x13, 0x6159, 0x000000, &vesa_modes[16] }, 470 { 0x14, 0x0000, 0x000000, NULL }, 471 { 0x15, 0x714f, 0x000000, &vesa_modes[17] }, 472 { 0x16, 0x0000, 0x7f1c21, NULL }, 473 { 0x17, 0x0000, 0x7f1c28, NULL }, 474 { 0x18, 0x0000, 0x7f1c44, NULL }, 475 { 0x19, 0x0000, 0x7f1c62, NULL }, 476 { 0x1a, 0x0000, 0x000000, NULL }, 477 { 0x1b, 0x0000, 0x8f1821, NULL }, 478 { 0x1c, 0x8100, 0x8f1828, NULL }, 479 { 0x1d, 0x810f, 0x8f1844, NULL }, 480 { 0x1e, 0x8119, 0x8f1862, NULL }, 481 { 0x1f, 0x0000, 0x000000, NULL }, 482 { 0x20, 0x8140, 0x000000, &vesa_modes[18] }, 483 { 0x21, 0x8159, 0x000000, &vesa_modes[19] }, 484 { 0x22, 0x0000, 0x000000, NULL }, 485 { 0x23, 0x8180, 0x000000, &vesa_modes[20] }, 486 { 0x24, 0x818f, 0x000000, &vesa_modes[21] }, 487 { 0x25, 0x8199, 0x000000, &vesa_modes[22] }, 488 { 0x26, 0x0000, 0x000000, NULL }, 489 { 0x27, 0x0000, 0x000000, NULL }, 490 { 0x28, 0x0000, 0x000000, NULL }, 491 { 0x29, 0x0000, 0x0c2021, NULL }, 492 { 0x2a, 0x9040, 0x0c2028, NULL }, 493 { 0x2b, 0x904f, 0x0c2044, NULL }, 494 { 0x2c, 0x9059, 0x0c2062, NULL }, 495 { 0x2d, 0x0000, 0x000000, NULL }, 496 { 0x2e, 0x9500, 0xc11821, NULL }, 497 { 0x2f, 0x9500, 0xc11828, NULL }, 498 { 0x30, 0x950f, 0xc11844, NULL }, 499 { 0x31, 0x9519, 0xc11868, NULL }, 500 { 0x32, 0x0000, 0x000000, NULL }, 501 { 0x33, 0xa940, 0x000000, &vesa_modes[23] }, 502 { 0x34, 0xa945, 0x000000, &vesa_modes[24] }, 503 { 0x35, 0xa94a, 0x000000, &vesa_modes[25] }, 504 { 0x36, 0xa94f, 0x000000, &vesa_modes[26] }, 505 { 0x37, 0xa959, 0x000000, &vesa_modes[27] }, 506 { 0x38, 0x0000, 0x000000, NULL }, 507 { 0x39, 0x0000, 0x0c2821, NULL }, 508 { 0x3a, 0xb300, 0x0c2828, NULL }, 509 { 0x3b, 0xb30f, 0x0c2844, NULL }, 510 { 0x3c, 0xb319, 0x0c2868, NULL }, 511 { 0x3d, 0x0000, 0x000000, NULL }, 512 { 0x3e, 0xc140, 0x000000, &vesa_modes[28] }, 513 { 0x3f, 0xc14f, 0x000000, &vesa_modes[29] }, 514 { 0x40, 0x0000, 0x000000, NULL}, 515 { 0x41, 0xc940, 0x000000, &vesa_modes[30] }, 516 { 0x42, 0xc94f, 0x000000, &vesa_modes[31] }, 517 { 0x43, 0x0000, 0x000000, NULL }, 518 { 0x44, 0x0000, 0x572821, &vesa_modes[34] }, 519 { 0x45, 0xd100, 0x572828, &vesa_modes[35] }, 520 { 0x46, 0xd10f, 0x572844, &vesa_modes[36] }, 521 { 0x47, 0xd119, 0x572862, &vesa_modes[37] }, 522 { 0x48, 0x0000, 0x000000, NULL }, 523 { 0x49, 0xd140, 0x000000, &vesa_modes[32] }, 524 { 0x4a, 0xd14f, 0x000000, &vesa_modes[33] }, 525 { 0x4b, 0x0000, 0x000000, NULL }, 526 { 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] }, 527 { 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] }, 528 { 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] }, 529 { 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] }, 530 { 0x50, 0x0000, 0x000000, &vesa_modes[42] }, 531}; 532EXPORT_SYMBOL(dmt_modes); 533#endif /* CONFIG_FB_MODE_HELPERS */ 534 535/** 536 * fb_try_mode - test a video mode 537 * @var: frame buffer user defined part of display 538 * @info: frame buffer info structure 539 * @mode: frame buffer video mode structure 540 * @bpp: color depth in bits per pixel 541 * 542 * Tries a video mode to test it's validity for device @info. 543 * 544 * Returns 1 on success. 545 * 546 */ 547 548static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, 549 const struct fb_videomode *mode, unsigned int bpp) 550{ 551 int err = 0; 552 553 DPRINTK("Trying mode %s %dx%d-%d@%d\n", 554 mode->name ? mode->name : "noname", 555 mode->xres, mode->yres, bpp, mode->refresh); 556 var->xres = mode->xres; 557 var->yres = mode->yres; 558 var->xres_virtual = mode->xres; 559 var->yres_virtual = mode->yres; 560 var->xoffset = 0; 561 var->yoffset = 0; 562 var->bits_per_pixel = bpp; 563 var->activate |= FB_ACTIVATE_TEST; 564 var->pixclock = mode->pixclock; 565 var->left_margin = mode->left_margin; 566 var->right_margin = mode->right_margin; 567 var->upper_margin = mode->upper_margin; 568 var->lower_margin = mode->lower_margin; 569 var->hsync_len = mode->hsync_len; 570 var->vsync_len = mode->vsync_len; 571 var->sync = mode->sync; 572 var->vmode = mode->vmode; 573 if (info->fbops->fb_check_var) 574 err = info->fbops->fb_check_var(var, info); 575 var->activate &= ~FB_ACTIVATE_TEST; 576 return err; 577} 578 579/** 580 * fb_find_mode - finds a valid video mode 581 * @var: frame buffer user defined part of display 582 * @info: frame buffer info structure 583 * @mode_option: string video mode to find 584 * @db: video mode database 585 * @dbsize: size of @db 586 * @default_mode: default video mode to fall back to 587 * @default_bpp: default color depth in bits per pixel 588 * 589 * Finds a suitable video mode, starting with the specified mode 590 * in @mode_option with fallback to @default_mode. If 591 * @default_mode fails, all modes in the video mode database will 592 * be tried. 593 * 594 * Valid mode specifiers for @mode_option:: 595 * 596 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m] 597 * 598 * or :: 599 * 600 * <name>[-<bpp>][@<refresh>] 601 * 602 * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and 603 * <name> a string. 604 * 605 * If 'M' is present after yres (and before refresh/bpp if present), 606 * the function will compute the timings using VESA(tm) Coordinated 607 * Video Timings (CVT). If 'R' is present after 'M', will compute with 608 * reduced blanking (for flatpanels). If 'i' or 'p' are present, compute 609 * interlaced or progressive mode. If 'm' is present, add margins equal 610 * to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char 611 * 'i', 'p' and 'm' must be after 'M' and 'R'. Example:: 612 * 613 * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. 614 * 615 * NOTE: The passed struct @var is _not_ cleared! This allows you 616 * to supply values for e.g. the grayscale and accel_flags fields. 617 * 618 * Returns zero for failure, 1 if using specified @mode_option, 619 * 2 if using specified @mode_option with an ignored refresh rate, 620 * 3 if default mode is used, 4 if fall back to any valid mode. 621 */ 622 623int fb_find_mode(struct fb_var_screeninfo *var, 624 struct fb_info *info, const char *mode_option, 625 const struct fb_videomode *db, unsigned int dbsize, 626 const struct fb_videomode *default_mode, 627 unsigned int default_bpp) 628{ 629 char *mode_option_buf = NULL; 630 int i; 631 632 /* Set up defaults */ 633 if (!db) { 634 db = modedb; 635 dbsize = ARRAY_SIZE(modedb); 636 } 637 638 if (!default_mode) 639 default_mode = &db[0]; 640 641 if (!default_bpp) 642 default_bpp = 8; 643 644 /* Did the user specify a video mode? */ 645 if (!mode_option) { 646 fb_get_options(NULL, &mode_option_buf); 647 mode_option = mode_option_buf; 648 } 649 if (mode_option) { 650 const char *name = mode_option; 651 unsigned int namelen = strlen(name); 652 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 653 unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; 654 int yres_specified = 0, cvt = 0, rb = 0; 655 int interlace_specified = 0, interlace = 0; 656 int margins = 0; 657 u32 best, diff, tdiff; 658 659 for (i = namelen-1; i >= 0; i--) { 660 switch (name[i]) { 661 case '@': 662 namelen = i; 663 if (!refresh_specified && !bpp_specified && 664 !yres_specified) { 665 refresh = simple_strtol(&name[i+1], NULL, 666 10); 667 refresh_specified = 1; 668 if (cvt || rb) 669 cvt = 0; 670 } else 671 goto done; 672 break; 673 case '-': 674 namelen = i; 675 if (!bpp_specified && !yres_specified) { 676 bpp = simple_strtol(&name[i+1], NULL, 677 10); 678 bpp_specified = 1; 679 if (cvt || rb) 680 cvt = 0; 681 } else 682 goto done; 683 break; 684 case 'x': 685 if (!yres_specified) { 686 yres = simple_strtol(&name[i+1], NULL, 687 10); 688 yres_specified = 1; 689 } else 690 goto done; 691 break; 692 case '0' ... '9': 693 break; 694 case 'M': 695 if (!yres_specified) 696 cvt = 1; 697 break; 698 case 'R': 699 if (!cvt) 700 rb = 1; 701 break; 702 case 'm': 703 if (!cvt) 704 margins = 1; 705 break; 706 case 'p': 707 if (!cvt) { 708 interlace = 0; 709 interlace_specified = 1; 710 } 711 break; 712 case 'i': 713 if (!cvt) { 714 interlace = 1; 715 interlace_specified = 1; 716 } 717 break; 718 default: 719 goto done; 720 } 721 } 722 if (i < 0 && yres_specified) { 723 xres = simple_strtol(name, NULL, 10); 724 res_specified = 1; 725 } 726done: 727 kfree(mode_option_buf); 728 if (cvt) { 729 struct fb_videomode cvt_mode; 730 int ret; 731 732 DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, 733 (refresh) ? refresh : 60, 734 (rb) ? " reduced blanking" : "", 735 (margins) ? " with margins" : "", 736 (interlace) ? " interlaced" : ""); 737 738 memset(&cvt_mode, 0, sizeof(cvt_mode)); 739 cvt_mode.xres = xres; 740 cvt_mode.yres = yres; 741 cvt_mode.refresh = (refresh) ? refresh : 60; 742 743 if (interlace) 744 cvt_mode.vmode |= FB_VMODE_INTERLACED; 745 else 746 cvt_mode.vmode &= ~FB_VMODE_INTERLACED; 747 748 ret = fb_find_mode_cvt(&cvt_mode, margins, rb); 749 750 if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { 751 DPRINTK("modedb CVT: CVT mode ok\n"); 752 return 1; 753 } 754 755 DPRINTK("CVT mode invalid, getting mode from database\n"); 756 } 757 758 DPRINTK("Trying specified video mode%s %ix%i\n", 759 refresh_specified ? "" : " (ignoring refresh rate)", 760 xres, yres); 761 762 if (!refresh_specified) { 763 /* 764 * If the caller has provided a custom mode database and 765 * a valid monspecs structure, we look for the mode with 766 * the highest refresh rate. Otherwise we play it safe 767 * it and try to find a mode with a refresh rate closest 768 * to the standard 60 Hz. 769 */ 770 if (db != modedb && 771 info->monspecs.vfmin && info->monspecs.vfmax && 772 info->monspecs.hfmin && info->monspecs.hfmax && 773 info->monspecs.dclkmax) { 774 refresh = 1000; 775 } else { 776 refresh = 60; 777 } 778 } 779 780 diff = -1; 781 best = -1; 782 for (i = 0; i < dbsize; i++) { 783 if ((name_matches(db[i], name, namelen) || 784 (res_specified && res_matches(db[i], xres, yres))) && 785 !fb_try_mode(var, info, &db[i], bpp)) { 786 const int db_interlace = (db[i].vmode & 787 FB_VMODE_INTERLACED ? 1 : 0); 788 int score = abs(db[i].refresh - refresh); 789 790 if (interlace_specified) 791 score += abs(db_interlace - interlace); 792 793 if (!interlace_specified || 794 db_interlace == interlace) 795 if (refresh_specified && 796 db[i].refresh == refresh) 797 return 1; 798 799 if (score < diff) { 800 diff = score; 801 best = i; 802 } 803 } 804 } 805 if (best != -1) { 806 fb_try_mode(var, info, &db[best], bpp); 807 return (refresh_specified) ? 2 : 1; 808 } 809 810 diff = 2 * (xres + yres); 811 best = -1; 812 DPRINTK("Trying best-fit modes\n"); 813 for (i = 0; i < dbsize; i++) { 814 DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); 815 if (!fb_try_mode(var, info, &db[i], bpp)) { 816 tdiff = abs(db[i].xres - xres) + 817 abs(db[i].yres - yres); 818 819 /* 820 * Penalize modes with resolutions smaller 821 * than requested. 822 */ 823 if (xres > db[i].xres || yres > db[i].yres) 824 tdiff += xres + yres; 825 826 if (diff > tdiff) { 827 diff = tdiff; 828 best = i; 829 } 830 } 831 } 832 if (best != -1) { 833 fb_try_mode(var, info, &db[best], bpp); 834 return 5; 835 } 836 } 837 838 DPRINTK("Trying default video mode\n"); 839 if (!fb_try_mode(var, info, default_mode, default_bpp)) 840 return 3; 841 842 DPRINTK("Trying all modes\n"); 843 for (i = 0; i < dbsize; i++) 844 if (!fb_try_mode(var, info, &db[i], default_bpp)) 845 return 4; 846 847 DPRINTK("No valid mode found\n"); 848 return 0; 849} 850 851/** 852 * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode 853 * @mode: pointer to struct fb_videomode 854 * @var: pointer to struct fb_var_screeninfo 855 */ 856void fb_var_to_videomode(struct fb_videomode *mode, 857 const struct fb_var_screeninfo *var) 858{ 859 u32 pixclock, hfreq, htotal, vtotal; 860 861 mode->name = NULL; 862 mode->xres = var->xres; 863 mode->yres = var->yres; 864 mode->pixclock = var->pixclock; 865 mode->hsync_len = var->hsync_len; 866 mode->vsync_len = var->vsync_len; 867 mode->left_margin = var->left_margin; 868 mode->right_margin = var->right_margin; 869 mode->upper_margin = var->upper_margin; 870 mode->lower_margin = var->lower_margin; 871 mode->sync = var->sync; 872 mode->vmode = var->vmode & FB_VMODE_MASK; 873 mode->flag = FB_MODE_IS_FROM_VAR; 874 mode->refresh = 0; 875 876 if (!var->pixclock) 877 return; 878 879 pixclock = PICOS2KHZ(var->pixclock) * 1000; 880 881 htotal = var->xres + var->right_margin + var->hsync_len + 882 var->left_margin; 883 vtotal = var->yres + var->lower_margin + var->vsync_len + 884 var->upper_margin; 885 886 if (var->vmode & FB_VMODE_INTERLACED) 887 vtotal /= 2; 888 if (var->vmode & FB_VMODE_DOUBLE) 889 vtotal *= 2; 890 891 if (!htotal || !vtotal) 892 return; 893 894 hfreq = pixclock/htotal; 895 mode->refresh = hfreq/vtotal; 896} 897 898/** 899 * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo 900 * @var: pointer to struct fb_var_screeninfo 901 * @mode: pointer to struct fb_videomode 902 */ 903void fb_videomode_to_var(struct fb_var_screeninfo *var, 904 const struct fb_videomode *mode) 905{ 906 var->xres = mode->xres; 907 var->yres = mode->yres; 908 var->xres_virtual = mode->xres; 909 var->yres_virtual = mode->yres; 910 var->xoffset = 0; 911 var->yoffset = 0; 912 var->pixclock = mode->pixclock; 913 var->left_margin = mode->left_margin; 914 var->right_margin = mode->right_margin; 915 var->upper_margin = mode->upper_margin; 916 var->lower_margin = mode->lower_margin; 917 var->hsync_len = mode->hsync_len; 918 var->vsync_len = mode->vsync_len; 919 var->sync = mode->sync; 920 var->vmode = mode->vmode & FB_VMODE_MASK; 921} 922 923/** 924 * fb_mode_is_equal - compare 2 videomodes 925 * @mode1: first videomode 926 * @mode2: second videomode 927 * 928 * RETURNS: 929 * 1 if equal, 0 if not 930 */ 931int fb_mode_is_equal(const struct fb_videomode *mode1, 932 const struct fb_videomode *mode2) 933{ 934 return (mode1->xres == mode2->xres && 935 mode1->yres == mode2->yres && 936 mode1->pixclock == mode2->pixclock && 937 mode1->hsync_len == mode2->hsync_len && 938 mode1->vsync_len == mode2->vsync_len && 939 mode1->left_margin == mode2->left_margin && 940 mode1->right_margin == mode2->right_margin && 941 mode1->upper_margin == mode2->upper_margin && 942 mode1->lower_margin == mode2->lower_margin && 943 mode1->sync == mode2->sync && 944 mode1->vmode == mode2->vmode); 945} 946 947/** 948 * fb_find_best_mode - find best matching videomode 949 * @var: pointer to struct fb_var_screeninfo 950 * @head: pointer to struct list_head of modelist 951 * 952 * RETURNS: 953 * struct fb_videomode, NULL if none found 954 * 955 * IMPORTANT: 956 * This function assumes that all modelist entries in 957 * info->modelist are valid. 958 * 959 * NOTES: 960 * Finds best matching videomode which has an equal or greater dimension than 961 * var->xres and var->yres. If more than 1 videomode is found, will return 962 * the videomode with the highest refresh rate 963 */ 964const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 965 struct list_head *head) 966{ 967 struct fb_modelist *modelist; 968 struct fb_videomode *mode, *best = NULL; 969 u32 diff = -1; 970 971 list_for_each_entry(modelist, head, list) { 972 u32 d; 973 mode = &modelist->mode; 974 975 if (mode->xres >= var->xres && mode->yres >= var->yres) { 976 d = (mode->xres - var->xres) + 977 (mode->yres - var->yres); 978 if (diff > d) { 979 diff = d; 980 best = mode; 981 } else if (diff == d && best && 982 mode->refresh > best->refresh) 983 best = mode; 984 } 985 } 986 return best; 987} 988 989/** 990 * fb_find_nearest_mode - find closest videomode 991 * 992 * @mode: pointer to struct fb_videomode 993 * @head: pointer to modelist 994 * 995 * Finds best matching videomode, smaller or greater in dimension. 996 * If more than 1 videomode is found, will return the videomode with 997 * the closest refresh rate. 998 */ 999const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 1000 struct list_head *head) 1001{ 1002 struct fb_modelist *modelist; 1003 struct fb_videomode *cmode, *best = NULL; 1004 u32 diff = -1, diff_refresh = -1; 1005 1006 list_for_each_entry(modelist, head, list) { 1007 u32 d; 1008 cmode = &modelist->mode; 1009 1010 d = abs(cmode->xres - mode->xres) + 1011 abs(cmode->yres - mode->yres); 1012 if (diff > d) { 1013 diff = d; 1014 diff_refresh = abs(cmode->refresh - mode->refresh); 1015 best = cmode; 1016 } else if (diff == d) { 1017 d = abs(cmode->refresh - mode->refresh); 1018 if (diff_refresh > d) { 1019 diff_refresh = d; 1020 best = cmode; 1021 } 1022 } 1023 } 1024 1025 return best; 1026} 1027 1028/** 1029 * fb_match_mode - find a videomode which exactly matches the timings in var 1030 * @var: pointer to struct fb_var_screeninfo 1031 * @head: pointer to struct list_head of modelist 1032 * 1033 * RETURNS: 1034 * struct fb_videomode, NULL if none found 1035 */ 1036const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 1037 struct list_head *head) 1038{ 1039 struct fb_modelist *modelist; 1040 struct fb_videomode *m, mode; 1041 1042 fb_var_to_videomode(&mode, var); 1043 list_for_each_entry(modelist, head, list) { 1044 m = &modelist->mode; 1045 if (fb_mode_is_equal(m, &mode)) 1046 return m; 1047 } 1048 return NULL; 1049} 1050 1051/** 1052 * fb_add_videomode - adds videomode entry to modelist 1053 * @mode: videomode to add 1054 * @head: struct list_head of modelist 1055 * 1056 * NOTES: 1057 * Will only add unmatched mode entries 1058 */ 1059int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head) 1060{ 1061 struct fb_modelist *modelist; 1062 struct fb_videomode *m; 1063 int found = 0; 1064 1065 list_for_each_entry(modelist, head, list) { 1066 m = &modelist->mode; 1067 if (fb_mode_is_equal(m, mode)) { 1068 found = 1; 1069 break; 1070 } 1071 } 1072 if (!found) { 1073 modelist = kmalloc(sizeof(struct fb_modelist), 1074 GFP_KERNEL); 1075 1076 if (!modelist) 1077 return -ENOMEM; 1078 modelist->mode = *mode; 1079 list_add(&modelist->list, head); 1080 } 1081 return 0; 1082} 1083 1084/** 1085 * fb_delete_videomode - removed videomode entry from modelist 1086 * @mode: videomode to remove 1087 * @head: struct list_head of modelist 1088 * 1089 * NOTES: 1090 * Will remove all matching mode entries 1091 */ 1092void fb_delete_videomode(const struct fb_videomode *mode, 1093 struct list_head *head) 1094{ 1095 struct list_head *pos, *n; 1096 struct fb_modelist *modelist; 1097 struct fb_videomode *m; 1098 1099 list_for_each_safe(pos, n, head) { 1100 modelist = list_entry(pos, struct fb_modelist, list); 1101 m = &modelist->mode; 1102 if (fb_mode_is_equal(m, mode)) { 1103 list_del(pos); 1104 kfree(pos); 1105 } 1106 } 1107} 1108 1109/** 1110 * fb_destroy_modelist - destroy modelist 1111 * @head: struct list_head of modelist 1112 */ 1113void fb_destroy_modelist(struct list_head *head) 1114{ 1115 struct list_head *pos, *n; 1116 1117 list_for_each_safe(pos, n, head) { 1118 list_del(pos); 1119 kfree(pos); 1120 } 1121} 1122EXPORT_SYMBOL_GPL(fb_destroy_modelist); 1123 1124/** 1125 * fb_videomode_to_modelist - convert mode array to mode list 1126 * @modedb: array of struct fb_videomode 1127 * @num: number of entries in array 1128 * @head: struct list_head of modelist 1129 */ 1130void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 1131 struct list_head *head) 1132{ 1133 int i; 1134 1135 INIT_LIST_HEAD(head); 1136 1137 for (i = 0; i < num; i++) { 1138 if (fb_add_videomode(&modedb[i], head)) 1139 return; 1140 } 1141} 1142 1143const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 1144 struct list_head *head) 1145{ 1146 struct fb_modelist *modelist; 1147 const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; 1148 int first = 0; 1149 1150 if (!head->prev || !head->next || list_empty(head)) 1151 goto finished; 1152 1153 /* get the first detailed mode and the very first mode */ 1154 list_for_each_entry(modelist, head, list) { 1155 m = &modelist->mode; 1156 1157 if (!first) { 1158 m1 = m; 1159 first = 1; 1160 } 1161 1162 if (m->flag & FB_MODE_IS_FIRST) { 1163 md = m; 1164 break; 1165 } 1166 } 1167 1168 /* first detailed timing is preferred */ 1169 if (specs->misc & FB_MISC_1ST_DETAIL) { 1170 best = md; 1171 goto finished; 1172 } 1173 1174 /* find best mode based on display width and height */ 1175 if (specs->max_x && specs->max_y) { 1176 struct fb_var_screeninfo var; 1177 1178 memset(&var, 0, sizeof(struct fb_var_screeninfo)); 1179 var.xres = (specs->max_x * 7200)/254; 1180 var.yres = (specs->max_y * 7200)/254; 1181 m = fb_find_best_mode(&var, head); 1182 if (m) { 1183 best = m; 1184 goto finished; 1185 } 1186 } 1187 1188 /* use first detailed mode */ 1189 if (md) { 1190 best = md; 1191 goto finished; 1192 } 1193 1194 /* last resort, use the very first mode */ 1195 best = m1; 1196finished: 1197 return best; 1198} 1199EXPORT_SYMBOL(fb_find_best_display); 1200 1201EXPORT_SYMBOL(fb_videomode_to_var); 1202EXPORT_SYMBOL(fb_var_to_videomode); 1203EXPORT_SYMBOL(fb_mode_is_equal); 1204EXPORT_SYMBOL(fb_add_videomode); 1205EXPORT_SYMBOL(fb_match_mode); 1206EXPORT_SYMBOL(fb_find_best_mode); 1207EXPORT_SYMBOL(fb_find_nearest_mode); 1208EXPORT_SYMBOL(fb_videomode_to_modelist); 1209EXPORT_SYMBOL(fb_find_mode); 1210EXPORT_SYMBOL(fb_find_mode_cvt);
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