Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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/tty.h> |
| 16 | #include <linux/fb.h> |
| 17 | #include <linux/sched.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, __FUNCTION__ , ## args) |
| 28 | #else |
| 29 | #define DPRINTK(fmt, args...) |
| 30 | #endif |
| 31 | |
| 32 | const char *global_mode_option; |
| 33 | |
| 34 | /* |
| 35 | * Standard video mode definitions (taken from XFree86) |
| 36 | */ |
| 37 | |
| 38 | #define DEFAULT_MODEDB_INDEX 0 |
| 39 | |
| 40 | static const struct fb_videomode modedb[] = { |
| 41 | { |
| 42 | /* 640x400 @ 70 Hz, 31.5 kHz hsync */ |
| 43 | NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, |
| 44 | 0, FB_VMODE_NONINTERLACED |
| 45 | }, { |
| 46 | /* 640x480 @ 60 Hz, 31.5 kHz hsync */ |
| 47 | NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, |
| 48 | 0, FB_VMODE_NONINTERLACED |
| 49 | }, { |
| 50 | /* 800x600 @ 56 Hz, 35.15 kHz hsync */ |
| 51 | NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, |
| 52 | 0, FB_VMODE_NONINTERLACED |
| 53 | }, { |
| 54 | /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ |
| 55 | NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, |
| 56 | 0, FB_VMODE_INTERLACED |
| 57 | }, { |
| 58 | /* 640x400 @ 85 Hz, 37.86 kHz hsync */ |
| 59 | NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, |
| 60 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 61 | }, { |
| 62 | /* 640x480 @ 72 Hz, 36.5 kHz hsync */ |
| 63 | NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, |
| 64 | 0, FB_VMODE_NONINTERLACED |
| 65 | }, { |
| 66 | /* 640x480 @ 75 Hz, 37.50 kHz hsync */ |
| 67 | NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, |
| 68 | 0, FB_VMODE_NONINTERLACED |
| 69 | }, { |
| 70 | /* 800x600 @ 60 Hz, 37.8 kHz hsync */ |
| 71 | NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, |
| 72 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 73 | }, { |
| 74 | /* 640x480 @ 85 Hz, 43.27 kHz hsync */ |
| 75 | NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, |
| 76 | 0, FB_VMODE_NONINTERLACED |
| 77 | }, { |
| 78 | /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ |
| 79 | NULL, 69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, |
| 80 | 0, FB_VMODE_INTERLACED |
| 81 | }, { |
| 82 | /* 800x600 @ 72 Hz, 48.0 kHz hsync */ |
| 83 | NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, |
| 84 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 85 | }, { |
| 86 | /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ |
| 87 | NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, |
| 88 | 0, FB_VMODE_NONINTERLACED |
| 89 | }, { |
| 90 | /* 640x480 @ 100 Hz, 53.01 kHz hsync */ |
| 91 | NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, |
| 92 | 0, FB_VMODE_NONINTERLACED |
| 93 | }, { |
| 94 | /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ |
| 95 | NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, |
| 96 | 0, FB_VMODE_NONINTERLACED |
| 97 | }, { |
| 98 | /* 800x600 @ 85 Hz, 55.84 kHz hsync */ |
| 99 | NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, |
| 100 | 0, FB_VMODE_NONINTERLACED |
| 101 | }, { |
| 102 | /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ |
| 103 | NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, |
| 104 | 0, FB_VMODE_NONINTERLACED |
| 105 | }, { |
| 106 | /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ |
| 107 | NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, |
| 108 | 0, FB_VMODE_INTERLACED |
| 109 | }, { |
| 110 | /* 800x600 @ 100 Hz, 64.02 kHz hsync */ |
| 111 | NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, |
| 112 | 0, FB_VMODE_NONINTERLACED |
| 113 | }, { |
| 114 | /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ |
| 115 | NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, |
| 116 | 0, FB_VMODE_NONINTERLACED |
| 117 | }, { |
| 118 | /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ |
| 119 | NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, |
| 120 | 0, FB_VMODE_NONINTERLACED |
| 121 | }, { |
| 122 | /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ |
| 123 | NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, |
| 124 | 0, FB_VMODE_NONINTERLACED |
| 125 | }, { |
| 126 | /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ |
| 127 | NULL, 68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, |
| 128 | 0, FB_VMODE_NONINTERLACED |
| 129 | }, { |
| 130 | /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ |
| 131 | NULL, 75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3, |
| 132 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 133 | }, { |
| 134 | /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ |
| 135 | NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, |
| 136 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 137 | }, { |
| 138 | /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ |
| 139 | NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, |
| 140 | 0, FB_VMODE_NONINTERLACED |
| 141 | }, { |
| 142 | /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ |
| 143 | NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, |
| 144 | 0, FB_VMODE_NONINTERLACED |
| 145 | }, { |
| 146 | /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ |
| 147 | NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, |
| 148 | 0, 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, FB_VMODE_NONINTERLACED |
| 153 | }, { |
| 154 | /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ |
| 155 | NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, |
| 156 | 0, FB_VMODE_NONINTERLACED |
| 157 | }, { |
| 158 | /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ |
| 159 | NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, |
| 160 | 0, FB_VMODE_NONINTERLACED |
| 161 | }, { |
| 162 | /* 1024x768 @ 100Hz, 80.21 kHz hsync */ |
| 163 | NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, |
| 164 | 0, FB_VMODE_NONINTERLACED |
| 165 | }, { |
| 166 | /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ |
| 167 | NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, |
| 168 | 0, FB_VMODE_NONINTERLACED |
| 169 | }, { |
| 170 | /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ |
| 171 | NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, |
| 172 | 0, FB_VMODE_NONINTERLACED |
| 173 | }, { |
| 174 | /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ |
| 175 | NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, |
| 176 | 0, 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, FB_VMODE_NONINTERLACED |
| 181 | }, { |
| 182 | /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ |
| 183 | NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, |
| 184 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 185 | }, { |
Olaf Hering | b0c8797 | 2006-03-27 01:17:38 -0800 | [diff] [blame] | 186 | /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ |
| 187 | NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, |
| 188 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 189 | }, { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ |
| 191 | NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, |
| 192 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 193 | }, { |
| 194 | /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ |
| 195 | NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, |
| 196 | 0, FB_VMODE_NONINTERLACED |
| 197 | }, { |
| 198 | /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ |
| 199 | NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, |
| 200 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 201 | }, { |
| 202 | /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ |
| 203 | NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, |
| 204 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
| 205 | }, { |
| 206 | /* 512x384 @ 78 Hz, 31.50 kHz hsync */ |
| 207 | NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, |
| 208 | 0, FB_VMODE_NONINTERLACED |
| 209 | }, { |
| 210 | /* 512x384 @ 85 Hz, 34.38 kHz hsync */ |
| 211 | NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, |
| 212 | 0, FB_VMODE_NONINTERLACED |
| 213 | }, { |
| 214 | /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ |
| 215 | NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, |
| 216 | 0, FB_VMODE_DOUBLE |
| 217 | }, { |
| 218 | /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ |
| 219 | NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, |
| 220 | 0, FB_VMODE_DOUBLE |
| 221 | }, { |
| 222 | /* 320x240 @ 72 Hz, 36.5 kHz hsync */ |
| 223 | NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, |
| 224 | 0, FB_VMODE_DOUBLE |
| 225 | }, { |
| 226 | /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ |
| 227 | NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, |
| 228 | 0, FB_VMODE_DOUBLE |
| 229 | }, { |
| 230 | /* 400x300 @ 60 Hz, 37.8 kHz hsync */ |
| 231 | NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, |
| 232 | 0, FB_VMODE_DOUBLE |
| 233 | }, { |
| 234 | /* 400x300 @ 72 Hz, 48.0 kHz hsync */ |
| 235 | NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, |
| 236 | 0, FB_VMODE_DOUBLE |
| 237 | }, { |
| 238 | /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ |
| 239 | NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, |
| 240 | 0, FB_VMODE_DOUBLE |
| 241 | }, { |
| 242 | /* 480x300 @ 60 Hz, 37.8 kHz hsync */ |
| 243 | NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, |
| 244 | 0, FB_VMODE_DOUBLE |
| 245 | }, { |
| 246 | /* 480x300 @ 63 Hz, 39.6 kHz hsync */ |
| 247 | NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, |
| 248 | 0, FB_VMODE_DOUBLE |
| 249 | }, { |
| 250 | /* 480x300 @ 72 Hz, 48.0 kHz hsync */ |
| 251 | NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, |
| 252 | 0, FB_VMODE_DOUBLE |
Antonino Daplas | db6778d | 2005-08-08 14:22:43 +0800 | [diff] [blame] | 253 | }, { |
| 254 | /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ |
| 255 | NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, |
| 256 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 257 | FB_VMODE_NONINTERLACED |
Michael Hanselmann | 1dfcdfa | 2005-11-08 21:39:06 -0800 | [diff] [blame] | 258 | }, { |
| 259 | /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ |
| 260 | NULL, 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6, |
| 261 | FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | }, |
| 263 | }; |
| 264 | |
| 265 | #ifdef CONFIG_FB_MODE_HELPERS |
| 266 | const struct fb_videomode vesa_modes[] = { |
| 267 | /* 0 640x350-85 VESA */ |
| 268 | { NULL, 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, |
| 269 | FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA}, |
| 270 | /* 1 640x400-85 VESA */ |
| 271 | { NULL, 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, |
| 272 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 273 | /* 2 720x400-85 VESA */ |
| 274 | { NULL, 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, |
| 275 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 276 | /* 3 640x480-60 VESA */ |
| 277 | { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, |
| 278 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 279 | /* 4 640x480-72 VESA */ |
| 280 | { NULL, 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, |
| 281 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 282 | /* 5 640x480-75 VESA */ |
| 283 | { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, |
| 284 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 285 | /* 6 640x480-85 VESA */ |
| 286 | { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, |
| 287 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 288 | /* 7 800x600-56 VESA */ |
| 289 | { NULL, 56, 800, 600, 27777, 128, 24, 22, 01, 72, 2, |
| 290 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 291 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 292 | /* 8 800x600-60 VESA */ |
| 293 | { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, |
| 294 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 295 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 296 | /* 9 800x600-72 VESA */ |
| 297 | { NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, |
| 298 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 299 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 300 | /* 10 800x600-75 VESA */ |
| 301 | { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, |
| 302 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 303 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 304 | /* 11 800x600-85 VESA */ |
| 305 | { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, |
| 306 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 307 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 308 | /* 12 1024x768i-43 VESA */ |
| 309 | { NULL, 53, 1024, 768, 22271, 56, 8, 41, 0, 176, 8, |
| 310 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 311 | FB_VMODE_INTERLACED, FB_MODE_IS_VESA }, |
| 312 | /* 13 1024x768-60 VESA */ |
| 313 | { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, |
| 314 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 315 | /* 14 1024x768-70 VESA */ |
| 316 | { NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, |
| 317 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 318 | /* 15 1024x768-75 VESA */ |
| 319 | { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, |
| 320 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 321 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 322 | /* 16 1024x768-85 VESA */ |
| 323 | { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, |
| 324 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 325 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 326 | /* 17 1152x864-75 VESA */ |
| 327 | { NULL, 75, 1153, 864, 9259, 256, 64, 32, 1, 128, 3, |
| 328 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 329 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 330 | /* 18 1280x960-60 VESA */ |
| 331 | { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, |
| 332 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 333 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 334 | /* 19 1280x960-85 VESA */ |
| 335 | { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, |
| 336 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 337 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 338 | /* 20 1280x1024-60 VESA */ |
| 339 | { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, |
| 340 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 341 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 342 | /* 21 1280x1024-75 VESA */ |
| 343 | { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, |
| 344 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 345 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 346 | /* 22 1280x1024-85 VESA */ |
| 347 | { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, |
| 348 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 349 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 350 | /* 23 1600x1200-60 VESA */ |
| 351 | { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, |
| 352 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 353 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 354 | /* 24 1600x1200-65 VESA */ |
| 355 | { NULL, 65, 1600, 1200, 5698, 304, 64, 46, 1, 192, 3, |
| 356 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 357 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 358 | /* 25 1600x1200-70 VESA */ |
| 359 | { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, |
| 360 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 361 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 362 | /* 26 1600x1200-75 VESA */ |
| 363 | { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, |
| 364 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 365 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 366 | /* 27 1600x1200-85 VESA */ |
| 367 | { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, |
| 368 | FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| 369 | FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 370 | /* 28 1792x1344-60 VESA */ |
| 371 | { NULL, 60, 1792, 1344, 4882, 328, 128, 46, 1, 200, 3, |
| 372 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 373 | /* 29 1792x1344-75 VESA */ |
| 374 | { NULL, 75, 1792, 1344, 3831, 352, 96, 69, 1, 216, 3, |
| 375 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 376 | /* 30 1856x1392-60 VESA */ |
| 377 | { NULL, 60, 1856, 1392, 4580, 352, 96, 43, 1, 224, 3, |
| 378 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 379 | /* 31 1856x1392-75 VESA */ |
| 380 | { NULL, 75, 1856, 1392, 3472, 352, 128, 104, 1, 224, 3, |
| 381 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 382 | /* 32 1920x1440-60 VESA */ |
| 383 | { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 200, 3, |
| 384 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 385 | /* 33 1920x1440-75 VESA */ |
| 386 | { NULL, 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, |
| 387 | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, |
| 388 | }; |
| 389 | EXPORT_SYMBOL(vesa_modes); |
| 390 | #endif /* CONFIG_FB_MODE_HELPERS */ |
| 391 | |
| 392 | static int my_atoi(const char *name) |
| 393 | { |
| 394 | int val = 0; |
| 395 | |
| 396 | for (;; name++) { |
| 397 | switch (*name) { |
| 398 | case '0'...'9': |
| 399 | val = 10*val+(*name-'0'); |
| 400 | break; |
| 401 | default: |
| 402 | return val; |
| 403 | } |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * fb_try_mode - test a video mode |
| 409 | * @var: frame buffer user defined part of display |
| 410 | * @info: frame buffer info structure |
| 411 | * @mode: frame buffer video mode structure |
| 412 | * @bpp: color depth in bits per pixel |
| 413 | * |
| 414 | * Tries a video mode to test it's validity for device @info. |
| 415 | * |
| 416 | * Returns 1 on success. |
| 417 | * |
| 418 | */ |
| 419 | |
| 420 | static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info, |
| 421 | const struct fb_videomode *mode, unsigned int bpp) |
| 422 | { |
| 423 | int err = 0; |
| 424 | |
| 425 | DPRINTK("Trying mode %s %dx%d-%d@%d\n", mode->name ? mode->name : "noname", |
| 426 | mode->xres, mode->yres, bpp, mode->refresh); |
| 427 | var->xres = mode->xres; |
| 428 | var->yres = mode->yres; |
| 429 | var->xres_virtual = mode->xres; |
| 430 | var->yres_virtual = mode->yres; |
| 431 | var->xoffset = 0; |
| 432 | var->yoffset = 0; |
| 433 | var->bits_per_pixel = bpp; |
| 434 | var->activate |= FB_ACTIVATE_TEST; |
| 435 | var->pixclock = mode->pixclock; |
| 436 | var->left_margin = mode->left_margin; |
| 437 | var->right_margin = mode->right_margin; |
| 438 | var->upper_margin = mode->upper_margin; |
| 439 | var->lower_margin = mode->lower_margin; |
| 440 | var->hsync_len = mode->hsync_len; |
| 441 | var->vsync_len = mode->vsync_len; |
| 442 | var->sync = mode->sync; |
| 443 | var->vmode = mode->vmode; |
| 444 | if (info->fbops->fb_check_var) |
| 445 | err = info->fbops->fb_check_var(var, info); |
| 446 | var->activate &= ~FB_ACTIVATE_TEST; |
| 447 | return err; |
| 448 | } |
| 449 | |
| 450 | /** |
| 451 | * fb_find_mode - finds a valid video mode |
| 452 | * @var: frame buffer user defined part of display |
| 453 | * @info: frame buffer info structure |
| 454 | * @mode_option: string video mode to find |
| 455 | * @db: video mode database |
| 456 | * @dbsize: size of @db |
| 457 | * @default_mode: default video mode to fall back to |
| 458 | * @default_bpp: default color depth in bits per pixel |
| 459 | * |
| 460 | * Finds a suitable video mode, starting with the specified mode |
| 461 | * in @mode_option with fallback to @default_mode. If |
| 462 | * @default_mode fails, all modes in the video mode database will |
| 463 | * be tried. |
| 464 | * |
| 465 | * Valid mode specifiers for @mode_option: |
| 466 | * |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 467 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | * <name>[-<bpp>][@<refresh>] |
| 469 | * |
| 470 | * with <xres>, <yres>, <bpp> and <refresh> decimal numbers and |
| 471 | * <name> a string. |
| 472 | * |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 473 | * If 'M' is present after yres (and before refresh/bpp if present), |
| 474 | * the function will compute the timings using VESA(tm) Coordinated |
| 475 | * Video Timings (CVT). If 'R' is present after 'M', will compute with |
| 476 | * reduced blanking (for flatpanels). If 'i' is present, compute |
| 477 | * interlaced mode. If 'm' is present, add margins equal to 1.8% |
| 478 | * of xres rounded down to 8 pixels, and 1.8% of yres. The char |
| 479 | * 'i' and 'm' must be after 'M' and 'R'. Example: |
| 480 | * |
| 481 | * 1024x768MR-8@60m - Reduced blank with margins at 60Hz. |
| 482 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | * NOTE: The passed struct @var is _not_ cleared! This allows you |
| 484 | * to supply values for e.g. the grayscale and accel_flags fields. |
| 485 | * |
| 486 | * Returns zero for failure, 1 if using specified @mode_option, |
| 487 | * 2 if using specified @mode_option with an ignored refresh rate, |
| 488 | * 3 if default mode is used, 4 if fall back to any valid mode. |
| 489 | * |
| 490 | */ |
| 491 | |
| 492 | int fb_find_mode(struct fb_var_screeninfo *var, |
| 493 | struct fb_info *info, const char *mode_option, |
| 494 | const struct fb_videomode *db, unsigned int dbsize, |
| 495 | const struct fb_videomode *default_mode, |
| 496 | unsigned int default_bpp) |
| 497 | { |
| 498 | int i; |
| 499 | |
| 500 | /* Set up defaults */ |
| 501 | if (!db) { |
| 502 | db = modedb; |
Tobias Klauser | d1ae418 | 2006-03-27 01:17:39 -0800 | [diff] [blame] | 503 | dbsize = ARRAY_SIZE(modedb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | if (!default_mode) |
| 506 | default_mode = &modedb[DEFAULT_MODEDB_INDEX]; |
| 507 | if (!default_bpp) |
| 508 | default_bpp = 8; |
| 509 | |
| 510 | /* Did the user specify a video mode? */ |
| 511 | if (mode_option || (mode_option = global_mode_option)) { |
| 512 | const char *name = mode_option; |
| 513 | unsigned int namelen = strlen(name); |
| 514 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; |
| 515 | unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0; |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 516 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | u32 best, diff; |
| 518 | |
| 519 | for (i = namelen-1; i >= 0; i--) { |
| 520 | switch (name[i]) { |
| 521 | case '@': |
| 522 | namelen = i; |
| 523 | if (!refresh_specified && !bpp_specified && |
| 524 | !yres_specified) { |
| 525 | refresh = my_atoi(&name[i+1]); |
| 526 | refresh_specified = 1; |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 527 | if (cvt || rb) |
| 528 | cvt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | } else |
| 530 | goto done; |
| 531 | break; |
| 532 | case '-': |
| 533 | namelen = i; |
| 534 | if (!bpp_specified && !yres_specified) { |
| 535 | bpp = my_atoi(&name[i+1]); |
| 536 | bpp_specified = 1; |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 537 | if (cvt || rb) |
| 538 | cvt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | } else |
| 540 | goto done; |
| 541 | break; |
| 542 | case 'x': |
| 543 | if (!yres_specified) { |
| 544 | yres = my_atoi(&name[i+1]); |
| 545 | yres_specified = 1; |
| 546 | } else |
| 547 | goto done; |
| 548 | break; |
| 549 | case '0'...'9': |
| 550 | break; |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 551 | case 'M': |
| 552 | if (!yres_specified) |
| 553 | cvt = 1; |
| 554 | break; |
| 555 | case 'R': |
| 556 | if (!cvt) |
| 557 | rb = 1; |
| 558 | break; |
| 559 | case 'm': |
| 560 | if (!cvt) |
| 561 | margins = 1; |
| 562 | break; |
| 563 | case 'i': |
| 564 | if (!cvt) |
| 565 | interlace = 1; |
| 566 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | default: |
| 568 | goto done; |
| 569 | } |
| 570 | } |
| 571 | if (i < 0 && yres_specified) { |
| 572 | xres = my_atoi(name); |
| 573 | res_specified = 1; |
| 574 | } |
| 575 | done: |
Antonino A. Daplas | 96fe6a2 | 2005-09-09 13:09:58 -0700 | [diff] [blame] | 576 | if (cvt) { |
| 577 | struct fb_videomode cvt_mode; |
| 578 | int ret; |
| 579 | |
| 580 | DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres, |
| 581 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : |
| 582 | "", (margins) ? " with margins" : "", (interlace) ? |
| 583 | " interlaced" : ""); |
| 584 | |
| 585 | cvt_mode.xres = xres; |
| 586 | cvt_mode.yres = yres; |
| 587 | cvt_mode.refresh = (refresh) ? refresh : 60; |
| 588 | |
| 589 | if (interlace) |
| 590 | cvt_mode.vmode |= FB_VMODE_INTERLACED; |
| 591 | else |
| 592 | cvt_mode.vmode &= ~FB_VMODE_INTERLACED; |
| 593 | |
| 594 | ret = fb_find_mode_cvt(&cvt_mode, margins, rb); |
| 595 | |
| 596 | if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) { |
| 597 | DPRINTK("modedb CVT: CVT mode ok\n"); |
| 598 | return 1; |
| 599 | } |
| 600 | |
| 601 | DPRINTK("CVT mode invalid, getting mode from database\n"); |
| 602 | } |
| 603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | DPRINTK("Trying specified video mode%s %ix%i\n", |
| 605 | refresh_specified ? "" : " (ignoring refresh rate)", xres, yres); |
| 606 | |
| 607 | diff = refresh; |
| 608 | best = -1; |
| 609 | for (i = 0; i < dbsize; i++) { |
| 610 | if ((name_matches(db[i], name, namelen) && |
| 611 | !fb_try_mode(var, info, &db[i], bpp))) |
| 612 | return 1; |
| 613 | if (res_specified && res_matches(db[i], xres, yres)) { |
| 614 | if(!fb_try_mode(var, info, &db[i], bpp)) { |
| 615 | if(!refresh_specified || db[i].refresh == refresh) |
| 616 | return 1; |
| 617 | else { |
| 618 | if(diff > abs(db[i].refresh - refresh)) { |
| 619 | diff = abs(db[i].refresh - refresh); |
| 620 | best = i; |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | if (best != -1) { |
| 627 | fb_try_mode(var, info, &db[best], bpp); |
| 628 | return 2; |
| 629 | } |
| 630 | |
| 631 | diff = xres + yres; |
| 632 | best = -1; |
| 633 | DPRINTK("Trying best-fit modes\n"); |
| 634 | for (i = 0; i < dbsize; i++) { |
| 635 | if (xres <= db[i].xres && yres <= db[i].yres) { |
| 636 | DPRINTK("Trying %ix%i\n", db[i].xres, db[i].yres); |
| 637 | if (!fb_try_mode(var, info, &db[i], bpp)) { |
| 638 | if (diff > (db[i].xres - xres) + (db[i].yres - yres)) { |
| 639 | diff = (db[i].xres - xres) + (db[i].yres - yres); |
| 640 | best = i; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | } |
| 645 | if (best != -1) { |
| 646 | fb_try_mode(var, info, &db[best], bpp); |
| 647 | return 5; |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | DPRINTK("Trying default video mode\n"); |
| 652 | if (!fb_try_mode(var, info, default_mode, default_bpp)) |
| 653 | return 3; |
| 654 | |
| 655 | DPRINTK("Trying all modes\n"); |
| 656 | for (i = 0; i < dbsize; i++) |
| 657 | if (!fb_try_mode(var, info, &db[i], default_bpp)) |
| 658 | return 4; |
| 659 | |
| 660 | DPRINTK("No valid mode found\n"); |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | /** |
| 665 | * fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode |
| 666 | * @mode: pointer to struct fb_videomode |
| 667 | * @var: pointer to struct fb_var_screeninfo |
| 668 | */ |
| 669 | void fb_var_to_videomode(struct fb_videomode *mode, |
| 670 | struct fb_var_screeninfo *var) |
| 671 | { |
| 672 | u32 pixclock, hfreq, htotal, vtotal; |
| 673 | |
| 674 | mode->name = NULL; |
| 675 | mode->xres = var->xres; |
| 676 | mode->yres = var->yres; |
| 677 | mode->pixclock = var->pixclock; |
| 678 | mode->hsync_len = var->hsync_len; |
| 679 | mode->vsync_len = var->vsync_len; |
| 680 | mode->left_margin = var->left_margin; |
| 681 | mode->right_margin = var->right_margin; |
| 682 | mode->upper_margin = var->upper_margin; |
| 683 | mode->lower_margin = var->lower_margin; |
| 684 | mode->sync = var->sync; |
| 685 | mode->vmode = var->vmode & FB_VMODE_MASK; |
| 686 | mode->flag = FB_MODE_IS_FROM_VAR; |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 687 | mode->refresh = 0; |
| 688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | if (!var->pixclock) |
| 690 | return; |
| 691 | |
| 692 | pixclock = PICOS2KHZ(var->pixclock) * 1000; |
| 693 | |
| 694 | htotal = var->xres + var->right_margin + var->hsync_len + |
| 695 | var->left_margin; |
| 696 | vtotal = var->yres + var->lower_margin + var->vsync_len + |
| 697 | var->upper_margin; |
| 698 | |
| 699 | if (var->vmode & FB_VMODE_INTERLACED) |
| 700 | vtotal /= 2; |
| 701 | if (var->vmode & FB_VMODE_DOUBLE) |
| 702 | vtotal *= 2; |
| 703 | |
| 704 | hfreq = pixclock/htotal; |
| 705 | mode->refresh = hfreq/vtotal; |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo |
| 710 | * @var: pointer to struct fb_var_screeninfo |
| 711 | * @mode: pointer to struct fb_videomode |
| 712 | */ |
| 713 | void fb_videomode_to_var(struct fb_var_screeninfo *var, |
| 714 | struct fb_videomode *mode) |
| 715 | { |
| 716 | var->xres = mode->xres; |
| 717 | var->yres = mode->yres; |
| 718 | var->pixclock = mode->pixclock; |
| 719 | var->left_margin = mode->left_margin; |
| 720 | var->hsync_len = mode->hsync_len; |
| 721 | var->vsync_len = mode->vsync_len; |
| 722 | var->right_margin = mode->right_margin; |
| 723 | var->upper_margin = mode->upper_margin; |
| 724 | var->lower_margin = mode->lower_margin; |
| 725 | var->sync = mode->sync; |
| 726 | var->vmode = mode->vmode & FB_VMODE_MASK; |
| 727 | } |
| 728 | |
| 729 | /** |
| 730 | * fb_mode_is_equal - compare 2 videomodes |
| 731 | * @mode1: first videomode |
| 732 | * @mode2: second videomode |
| 733 | * |
| 734 | * RETURNS: |
| 735 | * 1 if equal, 0 if not |
| 736 | */ |
| 737 | int fb_mode_is_equal(struct fb_videomode *mode1, |
| 738 | struct fb_videomode *mode2) |
| 739 | { |
| 740 | return (mode1->xres == mode2->xres && |
| 741 | mode1->yres == mode2->yres && |
| 742 | mode1->pixclock == mode2->pixclock && |
| 743 | mode1->hsync_len == mode2->hsync_len && |
| 744 | mode1->vsync_len == mode2->vsync_len && |
| 745 | mode1->left_margin == mode2->left_margin && |
| 746 | mode1->right_margin == mode2->right_margin && |
| 747 | mode1->upper_margin == mode2->upper_margin && |
| 748 | mode1->lower_margin == mode2->lower_margin && |
| 749 | mode1->sync == mode2->sync && |
| 750 | mode1->vmode == mode2->vmode); |
| 751 | } |
| 752 | |
| 753 | /** |
| 754 | * fb_find_best_mode - find best matching videomode |
| 755 | * @var: pointer to struct fb_var_screeninfo |
| 756 | * @head: pointer to struct list_head of modelist |
| 757 | * |
| 758 | * RETURNS: |
| 759 | * struct fb_videomode, NULL if none found |
| 760 | * |
| 761 | * IMPORTANT: |
| 762 | * This function assumes that all modelist entries in |
| 763 | * info->modelist are valid. |
| 764 | * |
| 765 | * NOTES: |
| 766 | * Finds best matching videomode which has an equal or greater dimension than |
| 767 | * var->xres and var->yres. If more than 1 videomode is found, will return |
| 768 | * the videomode with the highest refresh rate |
| 769 | */ |
| 770 | struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var, |
| 771 | struct list_head *head) |
| 772 | { |
| 773 | struct list_head *pos; |
| 774 | struct fb_modelist *modelist; |
| 775 | struct fb_videomode *mode, *best = NULL; |
| 776 | u32 diff = -1; |
| 777 | |
| 778 | list_for_each(pos, head) { |
| 779 | u32 d; |
| 780 | |
| 781 | modelist = list_entry(pos, struct fb_modelist, list); |
| 782 | mode = &modelist->mode; |
| 783 | |
| 784 | if (mode->xres >= var->xres && mode->yres >= var->yres) { |
| 785 | d = (mode->xres - var->xres) + |
| 786 | (mode->yres - var->yres); |
| 787 | if (diff > d) { |
| 788 | diff = d; |
| 789 | best = mode; |
| 790 | } else if (diff == d && mode->refresh > best->refresh) |
| 791 | best = mode; |
| 792 | } |
| 793 | } |
| 794 | return best; |
| 795 | } |
| 796 | |
| 797 | /** |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 798 | * fb_find_nearest_mode - find closest videomode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | * |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 800 | * @mode: pointer to struct fb_videomode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | * @head: pointer to modelist |
| 802 | * |
| 803 | * Finds best matching videomode, smaller or greater in dimension. |
| 804 | * If more than 1 videomode is found, will return the videomode with |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 805 | * the closest refresh rate. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | */ |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 807 | struct fb_videomode *fb_find_nearest_mode(struct fb_videomode *mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | struct list_head *head) |
| 809 | { |
| 810 | struct list_head *pos; |
| 811 | struct fb_modelist *modelist; |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 812 | struct fb_videomode *cmode, *best = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | u32 diff = -1, diff_refresh = -1; |
| 814 | |
| 815 | list_for_each(pos, head) { |
| 816 | u32 d; |
| 817 | |
| 818 | modelist = list_entry(pos, struct fb_modelist, list); |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 819 | cmode = &modelist->mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 821 | d = abs(cmode->xres - mode->xres) + |
| 822 | abs(cmode->yres - mode->yres); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | if (diff > d) { |
| 824 | diff = d; |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 825 | best = cmode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } else if (diff == d) { |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 827 | d = abs(cmode->refresh - mode->refresh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | if (diff_refresh > d) { |
| 829 | diff_refresh = d; |
Michal Januszewski | 8fb6567 | 2005-11-07 01:00:47 -0800 | [diff] [blame] | 830 | best = cmode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | } |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | return best; |
| 836 | } |
| 837 | |
| 838 | /** |
| 839 | * fb_match_mode - find a videomode which exactly matches the timings in var |
| 840 | * @var: pointer to struct fb_var_screeninfo |
| 841 | * @head: pointer to struct list_head of modelist |
| 842 | * |
| 843 | * RETURNS: |
| 844 | * struct fb_videomode, NULL if none found |
| 845 | */ |
| 846 | struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var, |
| 847 | struct list_head *head) |
| 848 | { |
| 849 | struct list_head *pos; |
| 850 | struct fb_modelist *modelist; |
| 851 | struct fb_videomode *m, mode; |
| 852 | |
| 853 | fb_var_to_videomode(&mode, var); |
| 854 | list_for_each(pos, head) { |
| 855 | modelist = list_entry(pos, struct fb_modelist, list); |
| 856 | m = &modelist->mode; |
| 857 | if (fb_mode_is_equal(m, &mode)) |
| 858 | return m; |
| 859 | } |
| 860 | return NULL; |
| 861 | } |
| 862 | |
| 863 | /** |
| 864 | * fb_add_videomode: adds videomode entry to modelist |
| 865 | * @mode: videomode to add |
| 866 | * @head: struct list_head of modelist |
| 867 | * |
| 868 | * NOTES: |
| 869 | * Will only add unmatched mode entries |
| 870 | */ |
| 871 | int fb_add_videomode(struct fb_videomode *mode, struct list_head *head) |
| 872 | { |
| 873 | struct list_head *pos; |
| 874 | struct fb_modelist *modelist; |
| 875 | struct fb_videomode *m; |
| 876 | int found = 0; |
| 877 | |
| 878 | list_for_each(pos, head) { |
| 879 | modelist = list_entry(pos, struct fb_modelist, list); |
| 880 | m = &modelist->mode; |
| 881 | if (fb_mode_is_equal(m, mode)) { |
| 882 | found = 1; |
| 883 | break; |
| 884 | } |
| 885 | } |
| 886 | if (!found) { |
| 887 | modelist = kmalloc(sizeof(struct fb_modelist), |
| 888 | GFP_KERNEL); |
| 889 | |
| 890 | if (!modelist) |
| 891 | return -ENOMEM; |
| 892 | modelist->mode = *mode; |
| 893 | list_add(&modelist->list, head); |
| 894 | } |
| 895 | return 0; |
| 896 | } |
| 897 | |
| 898 | /** |
| 899 | * fb_delete_videomode: removed videomode entry from modelist |
| 900 | * @mode: videomode to remove |
| 901 | * @head: struct list_head of modelist |
| 902 | * |
| 903 | * NOTES: |
| 904 | * Will remove all matching mode entries |
| 905 | */ |
| 906 | void fb_delete_videomode(struct fb_videomode *mode, struct list_head *head) |
| 907 | { |
| 908 | struct list_head *pos, *n; |
| 909 | struct fb_modelist *modelist; |
| 910 | struct fb_videomode *m; |
| 911 | |
| 912 | list_for_each_safe(pos, n, head) { |
| 913 | modelist = list_entry(pos, struct fb_modelist, list); |
| 914 | m = &modelist->mode; |
| 915 | if (fb_mode_is_equal(m, mode)) { |
| 916 | list_del(pos); |
| 917 | kfree(pos); |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | /** |
| 923 | * fb_destroy_modelist: destroy modelist |
| 924 | * @head: struct list_head of modelist |
| 925 | */ |
| 926 | void fb_destroy_modelist(struct list_head *head) |
| 927 | { |
| 928 | struct list_head *pos, *n; |
| 929 | |
| 930 | list_for_each_safe(pos, n, head) { |
| 931 | list_del(pos); |
| 932 | kfree(pos); |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * fb_videomode_to_modelist: convert mode array to mode list |
| 938 | * @modedb: array of struct fb_videomode |
| 939 | * @num: number of entries in array |
| 940 | * @head: struct list_head of modelist |
| 941 | */ |
| 942 | void fb_videomode_to_modelist(struct fb_videomode *modedb, int num, |
| 943 | struct list_head *head) |
| 944 | { |
| 945 | int i; |
| 946 | |
| 947 | INIT_LIST_HEAD(head); |
| 948 | |
| 949 | for (i = 0; i < num; i++) { |
| 950 | if (fb_add_videomode(&modedb[i], head)) |
| 951 | return; |
| 952 | } |
| 953 | } |
| 954 | |
Antonino A. Daplas | 003cfc0 | 2005-11-07 01:00:54 -0800 | [diff] [blame] | 955 | struct fb_videomode *fb_find_best_display(struct fb_monspecs *specs, |
| 956 | struct list_head *head) |
| 957 | { |
| 958 | struct list_head *pos; |
| 959 | struct fb_modelist *modelist; |
| 960 | struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL; |
| 961 | int first = 0; |
| 962 | |
| 963 | if (!head->prev || !head->next || list_empty(head)) |
| 964 | goto finished; |
| 965 | |
| 966 | /* get the first detailed mode and the very first mode */ |
| 967 | list_for_each(pos, head) { |
| 968 | modelist = list_entry(pos, struct fb_modelist, list); |
| 969 | m = &modelist->mode; |
| 970 | |
| 971 | if (!first) { |
| 972 | m1 = m; |
| 973 | first = 1; |
| 974 | } |
| 975 | |
| 976 | if (m->flag & FB_MODE_IS_FIRST) { |
| 977 | md = m; |
| 978 | break; |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | /* first detailed timing is preferred */ |
| 983 | if (specs->misc & FB_MISC_1ST_DETAIL) { |
| 984 | best = md; |
| 985 | goto finished; |
| 986 | } |
| 987 | |
| 988 | /* find best mode based on display width and height */ |
| 989 | if (specs->max_x && specs->max_y) { |
| 990 | struct fb_var_screeninfo var; |
| 991 | |
| 992 | memset(&var, 0, sizeof(struct fb_var_screeninfo)); |
| 993 | var.xres = (specs->max_x * 7200)/254; |
| 994 | var.yres = (specs->max_y * 7200)/254; |
| 995 | m = fb_find_best_mode(&var, head); |
| 996 | if (m) { |
| 997 | best = m; |
| 998 | goto finished; |
| 999 | } |
| 1000 | } |
| 1001 | |
| 1002 | /* use first detailed mode */ |
| 1003 | if (md) { |
| 1004 | best = md; |
| 1005 | goto finished; |
| 1006 | } |
| 1007 | |
| 1008 | /* last resort, use the very first mode */ |
| 1009 | best = m1; |
| 1010 | finished: |
| 1011 | return best; |
| 1012 | } |
| 1013 | EXPORT_SYMBOL(fb_find_best_display); |
| 1014 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | EXPORT_SYMBOL(fb_videomode_to_var); |
| 1016 | EXPORT_SYMBOL(fb_var_to_videomode); |
| 1017 | EXPORT_SYMBOL(fb_mode_is_equal); |
| 1018 | EXPORT_SYMBOL(fb_add_videomode); |
| 1019 | EXPORT_SYMBOL(fb_delete_videomode); |
| 1020 | EXPORT_SYMBOL(fb_destroy_modelist); |
| 1021 | EXPORT_SYMBOL(fb_match_mode); |
| 1022 | EXPORT_SYMBOL(fb_find_best_mode); |
| 1023 | EXPORT_SYMBOL(fb_find_nearest_mode); |
| 1024 | EXPORT_SYMBOL(fb_videomode_to_modelist); |
| 1025 | EXPORT_SYMBOL(fb_find_mode); |