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kunit / linux / 494c9a41785847eedceb6ff9b660d0962274985b / . / drivers / video / fbdev / core / modedb.c
blob: 283d9307df21c2d9b46d609080f078e591943b65 [file] [log] [blame]
/*
* 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/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 },
/* 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 cea_modes[65] = {
/* #1: 640x480p@59.94/60Hz */
[1] = {
NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0,
FB_VMODE_NONINTERLACED, 0,
},
/* #3: 720x480p@59.94/60Hz */
[3] = {
NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0,
FB_VMODE_NONINTERLACED, 0,
},
/* #5: 1920x1080i@59.94/60Hz */
[5] = {
NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_INTERLACED, 0,
},
/* #7: 720(1440)x480iH@59.94/60Hz */
[7] = {
NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0,
FB_VMODE_INTERLACED, 0,
},
/* #9: 720(1440)x240pH@59.94/60Hz */
[9] = {
NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0,
FB_VMODE_NONINTERLACED, 0,
},
/* #18: 720x576pH@50Hz */
[18] = {
NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0,
FB_VMODE_NONINTERLACED, 0,
},
/* #19: 1280x720p@50Hz */
[19] = {
NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0,
},
/* #20: 1920x1080i@50Hz */
[20] = {
NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_INTERLACED, 0,
},
/* #32: 1920x1080p@23.98/24Hz */
[32] = {
NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0,
},
/* #35: (2880)x480p4x@59.94/60Hz */
[35] = {
NULL, 60, 2880, 480, 9250, 240, 64, 30, 9, 248, 6, 0,
FB_VMODE_NONINTERLACED, 0,
},
};
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] = {
{ 0x01, 0x0000, 0x000000, &vesa_modes[0] },
{ 0x02, 0x3119, 0x000000, &vesa_modes[1] },
{ 0x03, 0x0000, 0x000000, &vesa_modes[2] },
{ 0x04, 0x3140, 0x000000, &vesa_modes[3] },
{ 0x05, 0x314c, 0x000000, &vesa_modes[4] },
{ 0x06, 0x314f, 0x000000, &vesa_modes[5] },
{ 0x07, 0x3159, 0x000000, &vesa_modes[6] },
{ 0x08, 0x0000, 0x000000, &vesa_modes[7] },
{ 0x09, 0x4540, 0x000000, &vesa_modes[8] },
{ 0x0a, 0x454c, 0x000000, &vesa_modes[9] },
{ 0x0b, 0x454f, 0x000000, &vesa_modes[10] },
{ 0x0c, 0x4559, 0x000000, &vesa_modes[11] },
{ 0x0d, 0x0000, 0x000000, NULL },
{ 0x0e, 0x0000, 0x000000, NULL },
{ 0x0f, 0x0000, 0x000000, &vesa_modes[12] },
{ 0x10, 0x6140, 0x000000, &vesa_modes[13] },
{ 0x11, 0x614a, 0x000000, &vesa_modes[14] },
{ 0x12, 0x614f, 0x000000, &vesa_modes[15] },
{ 0x13, 0x6159, 0x000000, &vesa_modes[16] },
{ 0x14, 0x0000, 0x000000, NULL },
{ 0x15, 0x714f, 0x000000, &vesa_modes[17] },
{ 0x16, 0x0000, 0x7f1c21, NULL },
{ 0x17, 0x0000, 0x7f1c28, NULL },
{ 0x18, 0x0000, 0x7f1c44, NULL },
{ 0x19, 0x0000, 0x7f1c62, NULL },
{ 0x1a, 0x0000, 0x000000, NULL },
{ 0x1b, 0x0000, 0x8f1821, NULL },
{ 0x1c, 0x8100, 0x8f1828, NULL },
{ 0x1d, 0x810f, 0x8f1844, NULL },
{ 0x1e, 0x8119, 0x8f1862, NULL },
{ 0x1f, 0x0000, 0x000000, NULL },
{ 0x20, 0x8140, 0x000000, &vesa_modes[18] },
{ 0x21, 0x8159, 0x000000, &vesa_modes[19] },
{ 0x22, 0x0000, 0x000000, NULL },
{ 0x23, 0x8180, 0x000000, &vesa_modes[20] },
{ 0x24, 0x818f, 0x000000, &vesa_modes[21] },
{ 0x25, 0x8199, 0x000000, &vesa_modes[22] },
{ 0x26, 0x0000, 0x000000, NULL },
{ 0x27, 0x0000, 0x000000, NULL },
{ 0x28, 0x0000, 0x000000, NULL },
{ 0x29, 0x0000, 0x0c2021, NULL },
{ 0x2a, 0x9040, 0x0c2028, NULL },
{ 0x2b, 0x904f, 0x0c2044, NULL },
{ 0x2c, 0x9059, 0x0c2062, NULL },
{ 0x2d, 0x0000, 0x000000, NULL },
{ 0x2e, 0x9500, 0xc11821, NULL },
{ 0x2f, 0x9500, 0xc11828, NULL },
{ 0x30, 0x950f, 0xc11844, NULL },
{ 0x31, 0x9519, 0xc11868, NULL },
{ 0x32, 0x0000, 0x000000, NULL },
{ 0x33, 0xa940, 0x000000, &vesa_modes[23] },
{ 0x34, 0xa945, 0x000000, &vesa_modes[24] },
{ 0x35, 0xa94a, 0x000000, &vesa_modes[25] },
{ 0x36, 0xa94f, 0x000000, &vesa_modes[26] },
{ 0x37, 0xa959, 0x000000, &vesa_modes[27] },
{ 0x38, 0x0000, 0x000000, NULL },
{ 0x39, 0x0000, 0x0c2821, NULL },
{ 0x3a, 0xb300, 0x0c2828, NULL },
{ 0x3b, 0xb30f, 0x0c2844, NULL },
{ 0x3c, 0xb319, 0x0c2868, NULL },
{ 0x3d, 0x0000, 0x000000, NULL },
{ 0x3e, 0xc140, 0x000000, &vesa_modes[28] },
{ 0x3f, 0xc14f, 0x000000, &vesa_modes[29] },
{ 0x40, 0x0000, 0x000000, NULL},
{ 0x41, 0xc940, 0x000000, &vesa_modes[30] },
{ 0x42, 0xc94f, 0x000000, &vesa_modes[31] },
{ 0x43, 0x0000, 0x000000, NULL },
{ 0x44, 0x0000, 0x572821, &vesa_modes[34] },
{ 0x45, 0xd100, 0x572828, &vesa_modes[35] },
{ 0x46, 0xd10f, 0x572844, &vesa_modes[36] },
{ 0x47, 0xd119, 0x572862, &vesa_modes[37] },
{ 0x48, 0x0000, 0x000000, NULL },
{ 0x49, 0xd140, 0x000000, &vesa_modes[32] },
{ 0x4a, 0xd14f, 0x000000, &vesa_modes[33] },
{ 0x4b, 0x0000, 0x000000, NULL },
{ 0x4c, 0x0000, 0x1f3821, &vesa_modes[38] },
{ 0x4d, 0x0000, 0x1f3828, &vesa_modes[39] },
{ 0x4e, 0x0000, 0x1f3844, &vesa_modes[40] },
{ 0x4f, 0x0000, 0x1f3862, &vesa_modes[41] },
{ 0x50, 0x0000, 0x000000, &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)
{
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)
mode_option = fb_mode_option;
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:
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;
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 list_head *pos;
struct fb_modelist *modelist;
struct fb_videomode *mode, *best = NULL;
u32 diff = -1;
list_for_each(pos, head) {
u32 d;
modelist = list_entry(pos, struct fb_modelist, list);
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 list_head *pos;
struct fb_modelist *modelist;
struct fb_videomode *cmode, *best = NULL;
u32 diff = -1, diff_refresh = -1;
list_for_each(pos, head) {
u32 d;
modelist = list_entry(pos, struct fb_modelist, list);
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 list_head *pos;
struct fb_modelist *modelist;
struct fb_videomode *m, mode;
fb_var_to_videomode(&mode, var);
list_for_each(pos, head) {
modelist = list_entry(pos, struct fb_modelist, 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 list_head *pos;
struct fb_modelist *modelist;
struct fb_videomode *m;
int found = 0;
list_for_each(pos, head) {
modelist = list_entry(pos, struct fb_modelist, 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 list_head *pos;
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(pos, head) {
modelist = list_entry(pos, struct fb_modelist, 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);