/*
* linux/drivers/video/modedb.c -- Standard video mode database management
*
* Copyright (C) 1999 Geert Uytterhoeven
*
* 2001 - Documented with DocBook
* - Brad Douglas <brad@neruo.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/export.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/kernel.h>
#undef DEBUG
#define name_matches(v, s, l) \
((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
#define res_matches(v, x, y) \
((v).xres == (x) && (v).yres == (y))
#ifdef DEBUG
#define DPRINTK(fmt, args...) printk("modedb %s: " fmt, __func__ , ## args)
#else
#define DPRINTK(fmt, args...)
#endif
/*
* Standard video mode definitions (taken from XFree86)
*/
static const struct fb_videomode modedb[] = {
/* 640x400 @ 70 Hz, 31.5 kHz hsync */
{ NULL, 70 , 640 , 400 , 39721 , 40 , 24 , 39 , 9 , 96 , 2 , 0 ,
FB_VMODE_NONINTERLACED },
/* 640x480 @ 60 Hz, 31.5 kHz hsync */
{ NULL, 60 , 640 , 480 , 39721 , 40 , 24 , 32 , 11 , 96 , 2 , 0 ,
FB_VMODE_NONINTERLACED },
/* 800x600 @ 56 Hz, 35.15 kHz hsync */
{ NULL, 56 , 800 , 600 , 27777 , 128 , 24 , 22 , 1 , 72 , 2 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
{ NULL, 87 , 1024 , 768 , 22271 , 56 , 24 , 33 , 8 , 160 , 8 , 0 ,
FB_VMODE_INTERLACED },
/* 640x400 @ 85 Hz, 37.86 kHz hsync */
{ NULL, 85 , 640 , 400 , 31746 , 96 , 32 , 41 , 1 , 64 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED },
/* 640x480 @ 72 Hz, 36.5 kHz hsync */
{ NULL, 72 , 640 , 480 , 31746 , 144 , 40 , 30 , 8 , 40 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 640x480 @ 75 Hz, 37.50 kHz hsync */
{ NULL, 75 , 640 , 480 , 31746 , 120 , 16 , 16 , 1 , 64 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 800x600 @ 60 Hz, 37.8 kHz hsync */
{ NULL, 60 , 800 , 600 , 25000 , 88 , 40 , 23 , 1 , 128 , 4 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 640x480 @ 85 Hz, 43.27 kHz hsync */
{ NULL, 85 , 640 , 480 , 27777 , 80 , 56 , 25 , 1 , 56 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
{ NULL, 89 , 1152 , 864 , 15384 , 96 , 16 , 110 , 1 , 216 , 10 , 0 ,
FB_VMODE_INTERLACED },
/* 800x600 @ 72 Hz, 48.0 kHz hsync */
{ NULL, 72 , 800 , 600 , 20000 , 64 , 56 , 23 , 37 , 120 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 60 Hz, 48.4 kHz hsync */
{ NULL, 60 , 1024 , 768 , 15384 , 168 , 8 , 29 , 3 , 144 , 6 , 0 ,
FB_VMODE_NONINTERLACED },
/* 640x480 @ 100 Hz, 53.01 kHz hsync */
{ NULL, 100 , 640 , 480 , 21834 , 96 , 32 , 36 , 8 , 96 , 6 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 60 Hz, 53.5 kHz hsync */
{ NULL, 60 , 1152 , 864 , 11123 , 208 , 64 , 16 , 4 , 256 , 8 , 0 ,
FB_VMODE_NONINTERLACED },
/* 800x600 @ 85 Hz, 55.84 kHz hsync */
{ NULL, 85 , 800 , 600 , 16460 , 160 , 64 , 36 , 16 , 64 , 5 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 70 Hz, 56.5 kHz hsync */
{ NULL, 70 , 1024 , 768 , 13333 , 144 , 24 , 29 , 3 , 136 , 6 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
{ NULL, 87 , 1280 , 1024 , 12500 , 56 , 16 , 128 , 1 , 216 , 12 , 0 ,
FB_VMODE_INTERLACED },
/* 800x600 @ 100 Hz, 64.02 kHz hsync */
{ NULL, 100 , 800 , 600 , 14357 , 160 , 64 , 30 , 4 , 64 , 6 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 76 Hz, 62.5 kHz hsync */
{ NULL, 76 , 1024 , 768 , 11764 , 208 , 8 , 36 , 16 , 120 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 70 Hz, 62.4 kHz hsync */
{ NULL, 70 , 1152 , 864 , 10869 , 106 , 56 , 20 , 1 , 160 , 10 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
{ NULL, 61 , 1280 , 1024 , 9090 , 200 , 48 , 26 , 1 , 184 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1400x1050 @ 60Hz, 63.9 kHz hsync */
{ NULL, 60 , 1400 , 1050 , 9259 , 136 , 40 , 13 , 1 , 112 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
{ NULL, 75 , 1400 , 1050 , 7190 , 120 , 56 , 23 , 10 , 112 , 13 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
{ NULL, 60 , 1400 , 1050 , 9259 , 128 , 40 , 12 , 0 , 112 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 85 Hz, 70.24 kHz hsync */
{ NULL, 85 , 1024 , 768 , 10111 , 192 , 32 , 34 , 14 , 160 , 6 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 78 Hz, 70.8 kHz hsync */
{ NULL, 78 , 1152 , 864 , 9090 , 228 , 88 , 32 , 0 , 84 , 12 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
{ NULL, 70 , 1280 , 1024 , 7905 , 224 , 32 , 28 , 8 , 160 , 8 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1600x1200 @ 60Hz, 75.00 kHz hsync */
{ NULL, 60 , 1600 , 1200 , 6172 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 84 Hz, 76.0 kHz hsync */
{ NULL, 84 , 1152 , 864 , 7407 , 184 , 312 , 32 , 0 , 128 , 12 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
{ NULL, 74 , 1280 , 1024 , 7407 , 256 , 32 , 34 , 3 , 144 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1024x768 @ 100Hz, 80.21 kHz hsync */
{ NULL, 100 , 1024 , 768 , 8658 , 192 , 32 , 21 , 3 , 192 , 10 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
{ NULL, 76 , 1280 , 1024 , 7407 , 248 , 32 , 34 , 3 , 104 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
{ NULL, 70 , 1600 , 1200 , 5291 , 304 , 64 , 46 , 1 , 192 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1152x864 @ 100 Hz, 89.62 kHz hsync */
{ NULL, 100 , 1152 , 864 , 7264 , 224 , 32 , 17 , 2 , 128 , 19 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
{ NULL, 85 , 1280 , 1024 , 6349 , 224 , 64 , 44 , 1 , 160 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
{ NULL, 75 , 1600 , 1200 , 4938 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
{ NULL, 60 , 1680 , 1050 , 6848 , 280 , 104 , 30 , 3 , 176 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
{ NULL, 85 , 1600 , 1200 , 4545 , 272 , 16 , 37 , 4 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
{ NULL, 100 , 1280 , 1024 , 5502 , 256 , 32 , 26 , 7 , 128 , 15 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1800x1440 @ 64Hz, 96.15 kHz hsync */
{ NULL, 64 , 1800 , 1440 , 4347 , 304 , 96 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1800x1440 @ 70Hz, 104.52 kHz hsync */
{ NULL, 70 , 1800 , 1440 , 4000 , 304 , 96 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 512x384 @ 78 Hz, 31.50 kHz hsync */
{ NULL, 78 , 512 , 384 , 49603 , 48 , 16 , 16 , 1 , 64 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 512x384 @ 85 Hz, 34.38 kHz hsync */
{ NULL, 85 , 512 , 384 , 45454 , 48 , 16 , 16 , 1 , 64 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
{ NULL, 70 , 320 , 200 , 79440 , 16 , 16 , 20 , 4 , 48 , 1 , 0 ,
FB_VMODE_DOUBLE },
/* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
{ NULL, 60 , 320 , 240 , 79440 , 16 , 16 , 16 , 5 , 48 , 1 , 0 ,
FB_VMODE_DOUBLE },
/* 320x240 @ 72 Hz, 36.5 kHz hsync */
{ NULL, 72 , 320 , 240 , 63492 , 16 , 16 , 16 , 4 , 48 , 2 , 0 ,
FB_VMODE_DOUBLE },
/* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
{ NULL, 56 , 400 , 300 , 55555 , 64 , 16 , 10 , 1 , 32 , 1 , 0 ,
FB_VMODE_DOUBLE },
/* 400x300 @ 60 Hz, 37.8 kHz hsync */
{ NULL, 60 , 400 , 300 , 50000 , 48 , 16 , 11 , 1 , 64 , 2 , 0 ,
FB_VMODE_DOUBLE },
/* 400x300 @ 72 Hz, 48.0 kHz hsync */
{ NULL, 72 , 400 , 300 , 40000 , 32 , 24 , 11 , 19 , 64 , 3 , 0 ,
FB_VMODE_DOUBLE },
/* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
{ NULL, 56 , 480 , 300 , 46176 , 80 , 16 , 10 , 1 , 40 , 1 , 0 ,
FB_VMODE_DOUBLE },
/* 480x300 @ 60 Hz, 37.8 kHz hsync */
{ NULL, 60 , 480 , 300 , 41858 , 56 , 16 , 11 , 1 , 80 , 2 , 0 ,
FB_VMODE_DOUBLE },
/* 480x300 @ 63 Hz, 39.6 kHz hsync */
{ NULL, 63 , 480 , 300 , 40000 , 56 , 16 , 11 , 1 , 80 , 2 , 0 ,
FB_VMODE_DOUBLE },
/* 480x300 @ 72 Hz, 48.0 kHz hsync */
{ NULL, 72 , 480 , 300 , 33386 , 40 , 24 , 11 , 19 , 80 , 3 , 0 ,
FB_VMODE_DOUBLE },
/* 1920x1080 @ 60 Hz, 67.3 kHz hsync */
{ NULL, 60 , 1920 , 1080 , 6734 , 148 , 88 , 36 , 4 , 44 , 5 , 0 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
{ NULL, 60 , 1920 , 1200 , 5177 , 128 , 336 , 1 , 38 , 208 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
{ NULL, 60 , 1152 , 768 , 14047 , 158 , 26 , 29 , 3 , 136 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED },
/* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
{ NULL, 60 , 1366 , 768 , 13806 , 120 , 10 , 14 , 3 , 32 , 5 , 0 ,
FB_VMODE_NONINTERLACED },
/* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
{ NULL, 60 , 1280 , 800 , 12048 , 200 , 64 , 24 , 1 , 136 , 3 , 0 ,
FB_VMODE_NONINTERLACED },
/* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
{ NULL, 50 , 720 , 576 , 74074 , 64 , 16 , 39 , 5 , 64 , 5 , 0 ,
FB_VMODE_INTERLACED },
/* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */
{ NULL, 50 , 800 , 520 , 58823 , 144 , 64 , 72 , 28 , 80 , 5 , 0 ,
FB_VMODE_INTERLACED },
/* 864x480 @ 60 Hz, 35.15 kHz hsync */
{ NULL, 60 , 864 , 480 , 27777 , 1 , 1 , 1 , 1 , 0 , 0 ,
0 , FB_VMODE_NONINTERLACED },
};
#ifdef CONFIG_FB_MODE_HELPERS
const struct fb_videomode vesa_modes[] = {
/* 0 640x350-85 VESA */
{ NULL, 85 , 640 , 350 , 31746 , 96 , 32 , 60 , 32 , 64 , 3 ,
FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
/* 1 640x400-85 VESA */
{ NULL, 85 , 640 , 400 , 31746 , 96 , 32 , 41 , 01 , 64 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 2 720x400-85 VESA */
{ NULL, 85 , 721 , 400 , 28169 , 108 , 36 , 42 , 01 , 72 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 3 640x480-60 VESA */
{ NULL, 60 , 640 , 480 , 39682 , 48 , 16 , 33 , 10 , 96 , 2 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 4 640x480-72 VESA */
{ NULL, 72 , 640 , 480 , 31746 , 128 , 24 , 29 , 9 , 40 , 2 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 5 640x480-75 VESA */
{ NULL, 75 , 640 , 480 , 31746 , 120 , 16 , 16 , 01 , 64 , 3 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 6 640x480-85 VESA */
{ NULL, 85 , 640 , 480 , 27777 , 80 , 56 , 25 , 01 , 56 , 3 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 7 800x600-56 VESA */
{ NULL, 56 , 800 , 600 , 27777 , 128 , 24 , 22 , 01 , 72 , 2 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 8 800x600-60 VESA */
{ NULL, 60 , 800 , 600 , 25000 , 88 , 40 , 23 , 01 , 128 , 4 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 9 800x600-72 VESA */
{ NULL, 72 , 800 , 600 , 20000 , 64 , 56 , 23 , 37 , 120 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 10 800x600-75 VESA */
{ NULL, 75 , 800 , 600 , 20202 , 160 , 16 , 21 , 01 , 80 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 11 800x600-85 VESA */
{ NULL, 85 , 800 , 600 , 17761 , 152 , 32 , 27 , 01 , 64 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 12 1024x768i-43 VESA */
{ NULL, 43 , 1024 , 768 , 22271 , 56 , 8 , 41 , 0 , 176 , 8 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_INTERLACED, FB_MODE_IS_VESA },
/* 13 1024x768-60 VESA */
{ NULL, 60 , 1024 , 768 , 15384 , 160 , 24 , 29 , 3 , 136 , 6 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 14 1024x768-70 VESA */
{ NULL, 70 , 1024 , 768 , 13333 , 144 , 24 , 29 , 3 , 136 , 6 ,
0 , FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 15 1024x768-75 VESA */
{ NULL, 75 , 1024 , 768 , 12690 , 176 , 16 , 28 , 1 , 96 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 16 1024x768-85 VESA */
{ NULL, 85 , 1024 , 768 , 10582 , 208 , 48 , 36 , 1 , 96 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 17 1152x864-75 VESA */
{ NULL, 75 , 1152 , 864 , 9259 , 256 , 64 , 32 , 1 , 128 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 18 1280x960-60 VESA */
{ NULL, 60 , 1280 , 960 , 9259 , 312 , 96 , 36 , 1 , 112 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 19 1280x960-85 VESA */
{ NULL, 85 , 1280 , 960 , 6734 , 224 , 64 , 47 , 1 , 160 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 20 1280x1024-60 VESA */
{ NULL, 60 , 1280 , 1024 , 9259 , 248 , 48 , 38 , 1 , 112 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 21 1280x1024-75 VESA */
{ NULL, 75 , 1280 , 1024 , 7407 , 248 , 16 , 38 , 1 , 144 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 22 1280x1024-85 VESA */
{ NULL, 85 , 1280 , 1024 , 6349 , 224 , 64 , 44 , 1 , 160 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 23 1600x1200-60 VESA */
{ NULL, 60 , 1600 , 1200 , 6172 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 24 1600x1200-65 VESA */
{ NULL, 65 , 1600 , 1200 , 5698 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 25 1600x1200-70 VESA */
{ NULL, 70 , 1600 , 1200 , 5291 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 26 1600x1200-75 VESA */
{ NULL, 75 , 1600 , 1200 , 4938 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 27 1600x1200-85 VESA */
{ NULL, 85 , 1600 , 1200 , 4357 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 28 1792x1344-60 VESA */
{ NULL, 60 , 1792 , 1344 , 4882 , 328 , 128 , 46 , 1 , 200 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 29 1792x1344-75 VESA */
{ NULL, 75 , 1792 , 1344 , 3831 , 352 , 96 , 69 , 1 , 216 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 30 1856x1392-60 VESA */
{ NULL, 60 , 1856 , 1392 , 4580 , 352 , 96 , 43 , 1 , 224 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 31 1856x1392-75 VESA */
{ NULL, 75 , 1856 , 1392 , 3472 , 352 , 128 , 104 , 1 , 224 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 32 1920x1440-60 VESA */
{ NULL, 60 , 1920 , 1440 , 4273 , 344 , 128 , 56 , 1 , 200 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 33 1920x1440-75 VESA */
{ NULL, 75 , 1920 , 1440 , 3367 , 352 , 144 , 56 , 1 , 224 , 3 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 34 1920x1200-60 RB VESA */
{ NULL, 60 , 1920 , 1200 , 6493 , 80 , 48 , 26 , 3 , 32 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 35 1920x1200-60 VESA */
{ NULL, 60 , 1920 , 1200 , 5174 , 336 , 136 , 36 , 3 , 200 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 36 1920x1200-75 VESA */
{ NULL, 75 , 1920 , 1200 , 4077 , 344 , 136 , 46 , 3 , 208 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 37 1920x1200-85 VESA */
{ NULL, 85 , 1920 , 1200 , 3555 , 352 , 144 , 53 , 3 , 208 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 38 2560x1600-60 RB VESA */
{ NULL, 60 , 2560 , 1600 , 3724 , 80 , 48 , 37 , 3 , 32 , 6 ,
FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 39 2560x1600-60 VESA */
{ NULL, 60 , 2560 , 1600 , 2869 , 472 , 192 , 49 , 3 , 280 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 40 2560x1600-75 VESA */
{ NULL, 75 , 2560 , 1600 , 2256 , 488 , 208 , 63 , 3 , 280 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 41 2560x1600-85 VESA */
{ NULL, 85 , 2560 , 1600 , 1979 , 488 , 208 , 73 , 3 , 280 , 6 ,
FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
/* 42 2560x1600-120 RB VESA */
{ NULL, 120 , 2560 , 1600 , 1809 , 80 , 48 , 85 , 3 , 32 , 6 ,
FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
};
EXPORT_SYMBOL(vesa_modes);
const struct dmt_videomode dmt_modes[DMT_SIZE] = {
{ 0 x01, 0 x0000, 0 x000000, &vesa_modes[0 ] },
{ 0 x02, 0 x3119, 0 x000000, &vesa_modes[1 ] },
{ 0 x03, 0 x0000, 0 x000000, &vesa_modes[2 ] },
{ 0 x04, 0 x3140, 0 x000000, &vesa_modes[3 ] },
{ 0 x05, 0 x314c, 0 x000000, &vesa_modes[4 ] },
{ 0 x06, 0 x314f, 0 x000000, &vesa_modes[5 ] },
{ 0 x07, 0 x3159, 0 x000000, &vesa_modes[6 ] },
{ 0 x08, 0 x0000, 0 x000000, &vesa_modes[7 ] },
{ 0 x09, 0 x4540, 0 x000000, &vesa_modes[8 ] },
{ 0 x0a, 0 x454c, 0 x000000, &vesa_modes[9 ] },
{ 0 x0b, 0 x454f, 0 x000000, &vesa_modes[10 ] },
{ 0 x0c, 0 x4559, 0 x000000, &vesa_modes[11 ] },
{ 0 x0d, 0 x0000, 0 x000000, NULL },
{ 0 x0e, 0 x0000, 0 x000000, NULL },
{ 0 x0f, 0 x0000, 0 x000000, &vesa_modes[12 ] },
{ 0 x10, 0 x6140, 0 x000000, &vesa_modes[13 ] },
{ 0 x11, 0 x614a, 0 x000000, &vesa_modes[14 ] },
{ 0 x12, 0 x614f, 0 x000000, &vesa_modes[15 ] },
{ 0 x13, 0 x6159, 0 x000000, &vesa_modes[16 ] },
{ 0 x14, 0 x0000, 0 x000000, NULL },
{ 0 x15, 0 x714f, 0 x000000, &vesa_modes[17 ] },
{ 0 x16, 0 x0000, 0 x7f1c21, NULL },
{ 0 x17, 0 x0000, 0 x7f1c28, NULL },
{ 0 x18, 0 x0000, 0 x7f1c44, NULL },
{ 0 x19, 0 x0000, 0 x7f1c62, NULL },
{ 0 x1a, 0 x0000, 0 x000000, NULL },
{ 0 x1b, 0 x0000, 0 x8f1821, NULL },
{ 0 x1c, 0 x8100, 0 x8f1828, NULL },
{ 0 x1d, 0 x810f, 0 x8f1844, NULL },
{ 0 x1e, 0 x8119, 0 x8f1862, NULL },
{ 0 x1f, 0 x0000, 0 x000000, NULL },
{ 0 x20, 0 x8140, 0 x000000, &vesa_modes[18 ] },
{ 0 x21, 0 x8159, 0 x000000, &vesa_modes[19 ] },
{ 0 x22, 0 x0000, 0 x000000, NULL },
{ 0 x23, 0 x8180, 0 x000000, &vesa_modes[20 ] },
{ 0 x24, 0 x818f, 0 x000000, &vesa_modes[21 ] },
{ 0 x25, 0 x8199, 0 x000000, &vesa_modes[22 ] },
{ 0 x26, 0 x0000, 0 x000000, NULL },
{ 0 x27, 0 x0000, 0 x000000, NULL },
{ 0 x28, 0 x0000, 0 x000000, NULL },
{ 0 x29, 0 x0000, 0 x0c2021, NULL },
{ 0 x2a, 0 x9040, 0 x0c2028, NULL },
{ 0 x2b, 0 x904f, 0 x0c2044, NULL },
{ 0 x2c, 0 x9059, 0 x0c2062, NULL },
{ 0 x2d, 0 x0000, 0 x000000, NULL },
{ 0 x2e, 0 x9500, 0 xc11821, NULL },
{ 0 x2f, 0 x9500, 0 xc11828, NULL },
{ 0 x30, 0 x950f, 0 xc11844, NULL },
{ 0 x31, 0 x9519, 0 xc11868, NULL },
{ 0 x32, 0 x0000, 0 x000000, NULL },
{ 0 x33, 0 xa940, 0 x000000, &vesa_modes[23 ] },
{ 0 x34, 0 xa945, 0 x000000, &vesa_modes[24 ] },
{ 0 x35, 0 xa94a, 0 x000000, &vesa_modes[25 ] },
{ 0 x36, 0 xa94f, 0 x000000, &vesa_modes[26 ] },
{ 0 x37, 0 xa959, 0 x000000, &vesa_modes[27 ] },
{ 0 x38, 0 x0000, 0 x000000, NULL },
{ 0 x39, 0 x0000, 0 x0c2821, NULL },
{ 0 x3a, 0 xb300, 0 x0c2828, NULL },
{ 0 x3b, 0 xb30f, 0 x0c2844, NULL },
{ 0 x3c, 0 xb319, 0 x0c2868, NULL },
{ 0 x3d, 0 x0000, 0 x000000, NULL },
{ 0 x3e, 0 xc140, 0 x000000, &vesa_modes[28 ] },
{ 0 x3f, 0 xc14f, 0 x000000, &vesa_modes[29 ] },
{ 0 x40, 0 x0000, 0 x000000, NULL},
{ 0 x41, 0 xc940, 0 x000000, &vesa_modes[30 ] },
{ 0 x42, 0 xc94f, 0 x000000, &vesa_modes[31 ] },
{ 0 x43, 0 x0000, 0 x000000, NULL },
{ 0 x44, 0 x0000, 0 x572821, &vesa_modes[34 ] },
{ 0 x45, 0 xd100, 0 x572828, &vesa_modes[35 ] },
{ 0 x46, 0 xd10f, 0 x572844, &vesa_modes[36 ] },
{ 0 x47, 0 xd119, 0 x572862, &vesa_modes[37 ] },
{ 0 x48, 0 x0000, 0 x000000, NULL },
{ 0 x49, 0 xd140, 0 x000000, &vesa_modes[32 ] },
{ 0 x4a, 0 xd14f, 0 x000000, &vesa_modes[33 ] },
{ 0 x4b, 0 x0000, 0 x000000, NULL },
{ 0 x4c, 0 x0000, 0 x1f3821, &vesa_modes[38 ] },
{ 0 x4d, 0 x0000, 0 x1f3828, &vesa_modes[39 ] },
{ 0 x4e, 0 x0000, 0 x1f3844, &vesa_modes[40 ] },
{ 0 x4f, 0 x0000, 0 x1f3862, &vesa_modes[41 ] },
{ 0 x50, 0 x0000, 0 x000000, &vesa_modes[42 ] },
};
EXPORT_SYMBOL(dmt_modes);
#endif /* CONFIG_FB_MODE_HELPERS */
/**
* fb_try_mode - test a video mode
* @var: frame buffer user defined part of display
* @info: frame buffer info structure
* @mode: frame buffer video mode structure
* @bpp: color depth in bits per pixel
*
* Tries a video mode to test it's validity for device @info.
*
* Returns 1 on success.
*
*/
static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
const struct fb_videomode *mode, unsigned int bpp)
{
int err = 0 ;
DPRINTK("Trying mode %s %dx%d-%d@%d\n" ,
mode->name ? mode->name : "noname" ,
mode->xres, mode->yres, bpp, mode->refresh);
var->xres = mode->xres;
var->yres = mode->yres;
var->xres_virtual = mode->xres;
var->yres_virtual = mode->yres;
var->xoffset = 0 ;
var->yoffset = 0 ;
var->bits_per_pixel = bpp;
var->activate |= FB_ACTIVATE_TEST;
var->pixclock = mode->pixclock;
var->left_margin = mode->left_margin;
var->right_margin = mode->right_margin;
var->upper_margin = mode->upper_margin;
var->lower_margin = mode->lower_margin;
var->hsync_len = mode->hsync_len;
var->vsync_len = mode->vsync_len;
var->sync = mode->sync;
var->vmode = mode->vmode;
if (info->fbops->fb_check_var)
err = info->fbops->fb_check_var(var, info);
var->activate &= ~FB_ACTIVATE_TEST;
return err;
}
/**
* fb_find_mode - finds a valid video mode
* @var: frame buffer user defined part of display
* @info: frame buffer info structure
* @mode_option: string video mode to find
* @db: video mode database
* @dbsize: size of @db
* @default_mode: default video mode to fall back to
* @default_bpp: default color depth in bits per pixel
*
* Finds a suitable video mode, starting with the specified mode
* in @mode_option with fallback to @default_mode. If
* @default_mode fails, all modes in the video mode database will
* be tried.
*
* Valid mode specifiers for @mode_option::
*
* <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m]
*
* or ::
*
* <name>[-<bpp>][@<refresh>]
*
* with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
* <name> a string.
*
* If 'M' is present after yres (and before refresh/bpp if present),
* the function will compute the timings using VESA(tm) Coordinated
* Video Timings (CVT). If 'R' is present after 'M', will compute with
* reduced blanking (for flatpanels). If 'i' or 'p' are present, compute
* interlaced or progressive mode. If 'm' is present, add margins equal
* to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char
* 'i', 'p' and 'm' must be after 'M' and 'R'. Example::
*
* 1024x768MR-8@60m - Reduced blank with margins at 60Hz.
*
* NOTE: The passed struct @var is _not_ cleared! This allows you
* to supply values for e.g. the grayscale and accel_flags fields.
*
* Returns zero for failure, 1 if using specified @mode_option,
* 2 if using specified @mode_option with an ignored refresh rate,
* 3 if default mode is used, 4 if fall back to any valid mode.
*/
int fb_find_mode(struct fb_var_screeninfo *var,
struct fb_info *info, const char *mode_option,
const struct fb_videomode *db, unsigned int dbsize,
const struct fb_videomode *default_mode,
unsigned int default_bpp)
{
char *mode_option_buf = NULL;
int i;
/* Set up defaults */
if (!db) {
db = modedb;
dbsize = ARRAY_SIZE(modedb);
}
if (!default_mode)
default_mode = &db[0 ];
if (!default_bpp)
default_bpp = 8 ;
/* Did the user specify a video mode? */
if (!mode_option) {
fb_get_options(NULL, &mode_option_buf);
mode_option = mode_option_buf;
}
if (mode_option) {
const char *name = mode_option;
unsigned int namelen = strlen(name);
int res_specified = 0 , bpp_specified = 0 , refresh_specified = 0 ;
unsigned int xres = 0 , yres = 0 , bpp = default_bpp, refresh = 0 ;
int yres_specified = 0 , cvt = 0 , rb = 0 ;
int interlace_specified = 0 , interlace = 0 ;
int margins = 0 ;
u32 best, diff, tdiff;
for (i = namelen-1 ; i >= 0 ; i--) {
switch (name[i]) {
case '@' :
namelen = i;
if (!refresh_specified && !bpp_specified &&
!yres_specified) {
refresh = simple_strtol(&name[i+1 ], NULL,
10 );
refresh_specified = 1 ;
if (cvt || rb)
cvt = 0 ;
} else
goto done;
break ;
case '-' :
namelen = i;
if (!bpp_specified && !yres_specified) {
bpp = simple_strtol(&name[i+1 ], NULL,
10 );
bpp_specified = 1 ;
if (cvt || rb)
cvt = 0 ;
} else
goto done;
break ;
case 'x' :
if (!yres_specified) {
yres = simple_strtol(&name[i+1 ], NULL,
10 );
yres_specified = 1 ;
} else
goto done;
break ;
case '0' ... '9' :
break ;
case 'M' :
if (!yres_specified)
cvt = 1 ;
break ;
case 'R' :
if (!cvt)
rb = 1 ;
break ;
case 'm' :
if (!cvt)
margins = 1 ;
break ;
case 'p' :
if (!cvt) {
interlace = 0 ;
interlace_specified = 1 ;
}
break ;
case 'i' :
if (!cvt) {
interlace = 1 ;
interlace_specified = 1 ;
}
break ;
default :
goto done;
}
}
if (i < 0 && yres_specified) {
xres = simple_strtol(name, NULL, 10 );
res_specified = 1 ;
}
done:
kfree(mode_option_buf);
if (cvt) {
struct fb_videomode cvt_mode;
int ret;
DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n" , xres, yres,
(refresh) ? refresh : 60 ,
(rb) ? " reduced blanking" : "" ,
(margins) ? " with margins" : "" ,
(interlace) ? " interlaced" : "" );
memset(&cvt_mode, 0 , sizeof (cvt_mode));
cvt_mode.xres = xres;
cvt_mode.yres = yres;
cvt_mode.refresh = (refresh) ? refresh : 60 ;
if (interlace)
cvt_mode.vmode |= FB_VMODE_INTERLACED;
else
cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
DPRINTK("modedb CVT: CVT mode ok\n" );
return 1 ;
}
DPRINTK("CVT mode invalid, getting mode from database\n" );
}
DPRINTK("Trying specified video mode%s %ix%i\n" ,
refresh_specified ? "" : " (ignoring refresh rate)" ,
xres, yres);
if (!refresh_specified) {
/*
* If the caller has provided a custom mode database and
* a valid monspecs structure, we look for the mode with
* the highest refresh rate. Otherwise we play it safe
* it and try to find a mode with a refresh rate closest
* to the standard 60 Hz.
*/
if (db != modedb &&
info->monspecs.vfmin && info->monspecs.vfmax &&
info->monspecs.hfmin && info->monspecs.hfmax &&
info->monspecs.dclkmax) {
refresh = 1000 ;
} else {
refresh = 60 ;
}
}
diff = -1 ;
best = -1 ;
for (i = 0 ; i < dbsize; i++) {
if ((name_matches(db[i], name, namelen) ||
(res_specified && res_matches(db[i], xres, yres))) &&
!fb_try_mode(var, info, &db[i], bpp)) {
const int db_interlace = (db[i].vmode &
FB_VMODE_INTERLACED ? 1 : 0 );
int score = abs(db[i].refresh - refresh);
if (interlace_specified)
score += abs(db_interlace - interlace);
if (!interlace_specified ||
db_interlace == interlace)
if (refresh_specified &&
db[i].refresh == refresh)
return 1 ;
if (score < diff) {
diff = score;
best = i;
}
}
}
if (best != -1 ) {
fb_try_mode(var, info, &db[best], bpp);
return (refresh_specified) ? 2 : 1 ;
}
diff = 2 * (xres + yres);
best = -1 ;
DPRINTK("Trying best-fit modes\n" );
for (i = 0 ; i < dbsize; i++) {
DPRINTK("Trying %ix%i\n" , db[i].xres, db[i].yres);
if (!fb_try_mode(var, info, &db[i], bpp)) {
tdiff = abs(db[i].xres - xres) +
abs(db[i].yres - yres);
/*
* Penalize modes with resolutions smaller
* than requested.
*/
if (xres > db[i].xres || yres > db[i].yres)
tdiff += xres + yres;
if (diff > tdiff) {
diff = tdiff;
best = i;
}
}
}
if (best != -1 ) {
fb_try_mode(var, info, &db[best], bpp);
return 5 ;
}
}
DPRINTK("Trying default video mode\n" );
if (!fb_try_mode(var, info, default_mode, default_bpp))
return 3 ;
DPRINTK("Trying all modes\n" );
for (i = 0 ; i < dbsize; i++)
if (!fb_try_mode(var, info, &db[i], default_bpp))
return 4 ;
DPRINTK("No valid mode found\n" );
return 0 ;
}
/**
* fb_var_to_videomode - convert fb_var_screeninfo to fb_videomode
* @mode: pointer to struct fb_videomode
* @var: pointer to struct fb_var_screeninfo
*/
void fb_var_to_videomode(struct fb_videomode *mode,
const struct fb_var_screeninfo *var)
{
u32 pixclock, hfreq, htotal, vtotal;
mode->name = NULL;
mode->xres = var->xres;
mode->yres = var->yres;
mode->pixclock = var->pixclock;
mode->hsync_len = var->hsync_len;
mode->vsync_len = var->vsync_len;
mode->left_margin = var->left_margin;
mode->right_margin = var->right_margin;
mode->upper_margin = var->upper_margin;
mode->lower_margin = var->lower_margin;
mode->sync = var->sync;
mode->vmode = var->vmode & FB_VMODE_MASK;
mode->flag = FB_MODE_IS_FROM_VAR;
mode->refresh = 0 ;
if (!var->pixclock)
return ;
pixclock = PICOS2KHZ(var->pixclock) * 1000 ;
htotal = var->xres + var->right_margin + var->hsync_len +
var->left_margin;
vtotal = var->yres + var->lower_margin + var->vsync_len +
var->upper_margin;
if (var->vmode & FB_VMODE_INTERLACED)
vtotal /= 2 ;
if (var->vmode & FB_VMODE_DOUBLE)
vtotal *= 2 ;
if (!htotal || !vtotal)
return ;
hfreq = pixclock/htotal;
mode->refresh = hfreq/vtotal;
}
/**
* fb_videomode_to_var - convert fb_videomode to fb_var_screeninfo
* @var: pointer to struct fb_var_screeninfo
* @mode: pointer to struct fb_videomode
*/
void fb_videomode_to_var(struct fb_var_screeninfo *var,
const struct fb_videomode *mode)
{
var->xres = mode->xres;
var->yres = mode->yres;
var->xres_virtual = mode->xres;
var->yres_virtual = mode->yres;
var->xoffset = 0 ;
var->yoffset = 0 ;
var->pixclock = mode->pixclock;
var->left_margin = mode->left_margin;
var->right_margin = mode->right_margin;
var->upper_margin = mode->upper_margin;
var->lower_margin = mode->lower_margin;
var->hsync_len = mode->hsync_len;
var->vsync_len = mode->vsync_len;
var->sync = mode->sync;
var->vmode = mode->vmode & FB_VMODE_MASK;
}
/**
* fb_mode_is_equal - compare 2 videomodes
* @mode1: first videomode
* @mode2: second videomode
*
* RETURNS:
* 1 if equal, 0 if not
*/
int fb_mode_is_equal(const struct fb_videomode *mode1,
const struct fb_videomode *mode2)
{
return (mode1->xres == mode2->xres &&
mode1->yres == mode2->yres &&
mode1->pixclock == mode2->pixclock &&
mode1->hsync_len == mode2->hsync_len &&
mode1->vsync_len == mode2->vsync_len &&
mode1->left_margin == mode2->left_margin &&
mode1->right_margin == mode2->right_margin &&
mode1->upper_margin == mode2->upper_margin &&
mode1->lower_margin == mode2->lower_margin &&
mode1->sync == mode2->sync &&
mode1->vmode == mode2->vmode);
}
/**
* fb_find_best_mode - find best matching videomode
* @var: pointer to struct fb_var_screeninfo
* @head: pointer to struct list_head of modelist
*
* RETURNS:
* struct fb_videomode, NULL if none found
*
* IMPORTANT:
* This function assumes that all modelist entries in
* info->modelist are valid.
*
* NOTES:
* Finds best matching videomode which has an equal or greater dimension than
* var->xres and var->yres. If more than 1 videomode is found, will return
* the videomode with the highest refresh rate
*/
const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
struct list_head *head)
{
struct fb_modelist *modelist;
struct fb_videomode *mode, *best = NULL;
u32 diff = -1 ;
list_for_each_entry(modelist, head, list) {
u32 d;
mode = &modelist->mode;
if (mode->xres >= var->xres && mode->yres >= var->yres) {
d = (mode->xres - var->xres) +
(mode->yres - var->yres);
if (diff > d) {
diff = d;
best = mode;
} else if (diff == d && best &&
mode->refresh > best->refresh)
best = mode;
}
}
return best;
}
/**
* fb_find_nearest_mode - find closest videomode
*
* @mode: pointer to struct fb_videomode
* @head: pointer to modelist
*
* Finds best matching videomode, smaller or greater in dimension.
* If more than 1 videomode is found, will return the videomode with
* the closest refresh rate.
*/
const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
struct list_head *head)
{
struct fb_modelist *modelist;
struct fb_videomode *cmode, *best = NULL;
u32 diff = -1 , diff_refresh = -1 ;
list_for_each_entry(modelist, head, list) {
u32 d;
cmode = &modelist->mode;
d = abs(cmode->xres - mode->xres) +
abs(cmode->yres - mode->yres);
if (diff > d) {
diff = d;
diff_refresh = abs(cmode->refresh - mode->refresh);
best = cmode;
} else if (diff == d) {
d = abs(cmode->refresh - mode->refresh);
if (diff_refresh > d) {
diff_refresh = d;
best = cmode;
}
}
}
return best;
}
/**
* fb_match_mode - find a videomode which exactly matches the timings in var
* @var: pointer to struct fb_var_screeninfo
* @head: pointer to struct list_head of modelist
*
* RETURNS:
* struct fb_videomode, NULL if none found
*/
const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
struct list_head *head)
{
struct fb_modelist *modelist;
struct fb_videomode *m, mode;
fb_var_to_videomode(&mode, var);
list_for_each_entry(modelist, head, list) {
m = &modelist->mode;
if (fb_mode_is_equal(m, &mode))
return m;
}
return NULL;
}
/**
* fb_add_videomode - adds videomode entry to modelist
* @mode: videomode to add
* @head: struct list_head of modelist
*
* NOTES:
* Will only add unmatched mode entries
*/
int fb_add_videomode(const struct fb_videomode *mode, struct list_head *head)
{
struct fb_modelist *modelist;
struct fb_videomode *m;
int found = 0 ;
list_for_each_entry(modelist, head, list) {
m = &modelist->mode;
if (fb_mode_is_equal(m, mode)) {
found = 1 ;
break ;
}
}
if (!found) {
modelist = kmalloc(sizeof (struct fb_modelist),
GFP_KERNEL);
if (!modelist)
return -ENOMEM;
modelist->mode = *mode;
list_add(&modelist->list, head);
}
return 0 ;
}
/**
* fb_delete_videomode - removed videomode entry from modelist
* @mode: videomode to remove
* @head: struct list_head of modelist
*
* NOTES:
* Will remove all matching mode entries
*/
void fb_delete_videomode(const struct fb_videomode *mode,
struct list_head *head)
{
struct list_head *pos, *n;
struct fb_modelist *modelist;
struct fb_videomode *m;
list_for_each_safe(pos, n, head) {
modelist = list_entry(pos, struct fb_modelist, list);
m = &modelist->mode;
if (fb_mode_is_equal(m, mode)) {
list_del(pos);
kfree(pos);
}
}
}
/**
* fb_destroy_modelist - destroy modelist
* @head: struct list_head of modelist
*/
void fb_destroy_modelist(struct list_head *head)
{
struct list_head *pos, *n;
list_for_each_safe(pos, n, head) {
list_del(pos);
kfree(pos);
}
}
EXPORT_SYMBOL_GPL(fb_destroy_modelist);
/**
* fb_videomode_to_modelist - convert mode array to mode list
* @modedb: array of struct fb_videomode
* @num: number of entries in array
* @head: struct list_head of modelist
*/
void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
struct list_head *head)
{
int i;
INIT_LIST_HEAD(head);
for (i = 0 ; i < num; i++) {
if (fb_add_videomode(&modedb[i], head))
return ;
}
}
const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
struct list_head *head)
{
struct fb_modelist *modelist;
const struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
int first = 0 ;
if (!head->prev || !head->next || list_empty(head))
goto finished;
/* get the first detailed mode and the very first mode */
list_for_each_entry(modelist, head, list) {
m = &modelist->mode;
if (!first) {
m1 = m;
first = 1 ;
}
if (m->flag & FB_MODE_IS_FIRST) {
md = m;
break ;
}
}
/* first detailed timing is preferred */
if (specs->misc & FB_MISC_1ST_DETAIL) {
best = md;
goto finished;
}
/* find best mode based on display width and height */
if (specs->max_x && specs->max_y) {
struct fb_var_screeninfo var;
memset(&var, 0 , sizeof (struct fb_var_screeninfo));
var.xres = (specs->max_x * 7200 )/254 ;
var.yres = (specs->max_y * 7200 )/254 ;
m = fb_find_best_mode(&var, head);
if (m) {
best = m;
goto finished;
}
}
/* use first detailed mode */
if (md) {
best = md;
goto finished;
}
/* last resort, use the very first mode */
best = m1;
finished:
return best;
}
EXPORT_SYMBOL(fb_find_best_display);
EXPORT_SYMBOL(fb_videomode_to_var);
EXPORT_SYMBOL(fb_var_to_videomode);
EXPORT_SYMBOL(fb_mode_is_equal);
EXPORT_SYMBOL(fb_add_videomode);
EXPORT_SYMBOL(fb_match_mode);
EXPORT_SYMBOL(fb_find_best_mode);
EXPORT_SYMBOL(fb_find_nearest_mode);
EXPORT_SYMBOL(fb_videomode_to_modelist);
EXPORT_SYMBOL(fb_find_mode);
EXPORT_SYMBOL(fb_find_mode_cvt);
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.20 Sekunden
(vorverarbeitet am 2026-06-07)
¤
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