599 lines
19 KiB
C
599 lines
19 KiB
C
/*
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* fb_modedb.c -- Standard video mode database management
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*
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* Copyright (C) 1999 Geert Uytterhoeven
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*
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* 2001 - Documented with DocBook
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* - Brad Douglas <brad@neruo.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include "fb.h"
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#include "bas_types.h"
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#include "bas_printf.h"
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#include "bas_string.h"
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// #define DEBUG
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#include "debug.h"
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#define name_matches(v, s, l) \
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((v).name && !strncmp((s), (v).name, (l)) && strlen((v).name) == (l))
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#define res_matches(v, x, y) \
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((v).xres == (x) && (v).yres == (y))
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/*
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* Standard video mode definitions (taken from XFree86)
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*/
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#define DEFAULT_MODEDB_INDEX 0
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const struct fb_videomode modedb[] =
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{
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{
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/* 640x400 @ 70 Hz, 31.5 kHz hsync */
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70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 640x480 @ 60 Hz, 31.5 kHz hsync */
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60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 800x600 @ 56 Hz, 35.15 kHz hsync */
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56, 800, 600, 27777, 128, 24, 22, 1, 72, 2,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */
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87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8,
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0, FB_VMODE_INTERLACED
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},
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{
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/* 640x400 @ 85 Hz, 37.86 kHz hsync */
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85, 640, 400, 31746, 96, 32, 41, 1, 64, 3,
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FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 640x480 @ 72 Hz, 36.5 kHz hsync */
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72, 640, 480, 31746, 144, 40, 30, 8, 40, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 640x480 @ 75 Hz, 37.50 kHz hsync */
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75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 800x600 @ 60 Hz, 37.8 kHz hsync */
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60, 800, 600, 25000, 88, 40, 23, 1, 128, 4,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 640x480 @ 85 Hz, 43.27 kHz hsync */
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85, 640, 480, 27777, 80, 56, 25, 1, 56, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */
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69, 1152, 864, 15384, 96, 16, 110, 1, 216, 10,
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0, FB_VMODE_INTERLACED
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},
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{
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/* 800x600 @ 72 Hz, 48.0 kHz hsync */
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72, 800, 600, 20000, 64, 56, 23, 37, 120, 6,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 60 Hz, 48.4 kHz hsync */
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60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 640x480 @ 100 Hz, 53.01 kHz hsync */
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100, 640, 480, 21834, 96, 32, 36, 8, 96, 6,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 60 Hz, 53.5 kHz hsync */
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60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 800x600 @ 85 Hz, 55.84 kHz hsync */
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85, 800, 600, 16460, 160, 64, 36, 16, 64, 5,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 70 Hz, 56.5 kHz hsync */
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70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */
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87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12,
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0, FB_VMODE_INTERLACED
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},
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{
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/* 800x600 @ 100 Hz, 64.02 kHz hsync */
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100, 800, 600, 14357, 160, 64, 30, 4, 64, 6,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 76 Hz, 62.5 kHz hsync */
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76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 70 Hz, 62.4 kHz hsync */
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70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 61 Hz, 64.2 kHz hsync */
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61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1400x1050 @ 60Hz, 63.9 kHz hsync */
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68, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/
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75, 1400, 1050, 9271, 120, 56, 13, 0, 112, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/
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60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 85 Hz, 70.24 kHz hsync */
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85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 78 Hz, 70.8 kHz hsync */
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78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 70 Hz, 74.59 kHz hsync */
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70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1600x1200 @ 60Hz, 75.00 kHz hsync */
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60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 84 Hz, 76.0 kHz hsync */
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84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 74 Hz, 78.85 kHz hsync */
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74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1024x768 @ 100Hz, 80.21 kHz hsync */
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100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 76 Hz, 81.13 kHz hsync */
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76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1600x1200 @ 70 Hz, 87.50 kHz hsync */
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70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x864 @ 100 Hz, 89.62 kHz hsync */
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100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 85 Hz, 91.15 kHz hsync */
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85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1600x1200 @ 75 Hz, 93.75 kHz hsync */
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75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
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85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x1024 @ 100 Hz, 107.16 kHz hsync */
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100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1800x1440 @ 64Hz, 96.15 kHz hsync */
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64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1800x1440 @ 70Hz, 104.52 kHz hsync */
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70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 512x384 @ 78 Hz, 31.50 kHz hsync */
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78, 512, 384, 49603, 48, 16, 16, 1, 64, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 512x384 @ 85 Hz, 34.38 kHz hsync */
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85, 512, 384, 45454, 48, 16, 16, 1, 64, 3,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */
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70, 320, 200, 79440, 16, 16, 20, 4, 48, 1,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */
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60, 320, 240, 79440, 16, 16, 16, 5, 48, 1,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 320x240 @ 72 Hz, 36.5 kHz hsync */
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72, 320, 240, 63492, 16, 16, 16, 4, 48, 2,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */
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56, 400, 300, 55555, 64, 16, 10, 1, 32, 1,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 400x300 @ 60 Hz, 37.8 kHz hsync */
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60, 400, 300, 50000, 48, 16, 11, 1, 64, 2,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 400x300 @ 72 Hz, 48.0 kHz hsync */
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72, 400, 300, 40000, 32, 24, 11, 19, 64, 3,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */
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56, 480, 300, 46176, 80, 16, 10, 1, 40, 1,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 480x300 @ 60 Hz, 37.8 kHz hsync */
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60, 480, 300, 41858, 56, 16, 11, 1, 80, 2,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 480x300 @ 63 Hz, 39.6 kHz hsync */
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63, 480, 300, 40000, 56, 16, 11, 1, 80, 2,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 480x300 @ 72 Hz, 48.0 kHz hsync */
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72, 480, 300, 33386, 40, 24, 11, 19, 80, 3,
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0, FB_VMODE_DOUBLE
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},
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{
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/* 1920x1200 @ 60 Hz, 74.5 Khz hsync */
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60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
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FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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FB_VMODE_NONINTERLACED
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},
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{
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/* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
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60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6,
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FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
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},
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{
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/* 1920x1080, 60 Hz, 1080pf */
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60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */
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60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5,
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0, FB_VMODE_NONINTERLACED
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},
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{
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/* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */
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60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3,
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0, FB_VMODE_NONINTERLACED
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},
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};
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long total_modedb = sizeof(modedb) / sizeof(*modedb);
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const struct fb_videomode vesa_modes[] =
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{
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/* 0 640x350-85 VESA */
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{ 85, 640, 350, 31746, 96, 32, 60, 32, 64, 3, FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA},
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/* 1 640x400-85 VESA */
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{ 85, 640, 400, 31746, 96, 32, 41, 01, 64, 3, FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 2 720x400-85 VESA */
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{ 85, 721, 400, 28169, 108, 36, 42, 01, 72, 3, FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 3 640x480-60 VESA */
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{ 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 4 640x480-72 VESA */
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{ 72, 640, 480, 31746, 128, 24, 29, 9, 40, 2, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 5 640x480-75 VESA */
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{ 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 6 640x480-85 VESA */
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{ 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 7 800x600-56 VESA */
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{ 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 },
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/* 8 800x600-60 VESA */
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{ 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 },
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/* 9 800x600-72 VESA */
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{ 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 },
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/* 10 800x600-75 VESA */
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{ 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 },
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/* 11 800x600-85 VESA */
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{ 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 },
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/* 12 1024x768i-43 VESA */
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{ 53, 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 },
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/* 13 1024x768-60 VESA */
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{ 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 14 1024x768-70 VESA */
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{ 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
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/* 15 1024x768-75 VESA */
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{ 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 },
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/* 16 1024x768-85 VESA */
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{ 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 },
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/* 17 1152x864-75 VESA */
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{ 75, 1153, 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 },
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/* 18 1280x960-60 VESA */
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{ 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 },
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/* 19 1280x960-85 VESA */
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{ 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 },
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/* 20 1280x1024-60 VESA */
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{ 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 },
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/* 21 1280x1024-75 VESA */
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{ 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 },
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/* 22 1280x1024-85 VESA */
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{ 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 },
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/* 23 1600x1200-60 VESA */
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{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 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 */
|
|
{ 60, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
};
|
|
|
|
/**
|
|
* 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 int32_t fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
|
|
const struct fb_videomode *mode, uint32_t bpp)
|
|
{
|
|
int32_t err = 0;
|
|
|
|
dbg("Trying mode %d x %d - %d @ %d\r\n", 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;
|
|
var->refresh = mode->refresh;
|
|
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
|
|
* @resolution: fVDI structure mode_option
|
|
* @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 @resolution with fallback to @default_mode. If
|
|
* @default_mode fails, all modes in the video mode database will
|
|
* be tried.
|
|
*
|
|
* Valid mode specifiers for @resolution:
|
|
*
|
|
* <xres>x<yres>[-<bpp>][@<refresh>] or
|
|
* <name>[-<bpp>][@<refresh>]
|
|
*
|
|
* with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
|
|
* <name> a string.
|
|
*
|
|
* 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 @resolution,
|
|
* 2 if using specified @resolution with an ignored refresh rate,
|
|
* 3 if default mode is used, 4 if fall back to any valid mode.
|
|
*
|
|
*/
|
|
|
|
int32_t fb_find_mode(struct fb_var_screeninfo *var,
|
|
struct fb_info *info, struct mode_option *resolution ,
|
|
const struct fb_videomode *db, uint32_t dbsize,
|
|
const struct fb_videomode *default_mode,
|
|
uint32_t default_bpp)
|
|
{
|
|
int32_t i,abs;
|
|
int32_t res_specified = 0, bpp_specified = 0, refresh_specified = 0;
|
|
uint32_t xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
|
|
int32_t yres_specified = 0;
|
|
unsigned long best, diff;
|
|
|
|
dbg("fb_find_mode\r\n");
|
|
|
|
/*
|
|
* FIXME: temporarily use unused variables here to make compiler happy
|
|
*/
|
|
(void) yres_specified;
|
|
(void) bpp_specified;
|
|
|
|
/* Set up defaults */
|
|
if (!db)
|
|
{
|
|
dbg("fb_find_mode, use default modedb\r\n");
|
|
if (resolution->used && (resolution->flags & MODE_VESA_FLAG))
|
|
{
|
|
db = vesa_modes;
|
|
dbsize = sizeof(vesa_modes)/sizeof(*vesa_modes);
|
|
}
|
|
else
|
|
{
|
|
db = modedb;
|
|
dbsize = sizeof(modedb)/sizeof(*modedb);
|
|
}
|
|
}
|
|
if (!default_mode)
|
|
default_mode = &modedb[DEFAULT_MODEDB_INDEX];
|
|
if (!default_bpp)
|
|
default_bpp = 8;
|
|
|
|
/* Did the user specify a video mode? */
|
|
if (resolution->used) /* fVDI mode */
|
|
{
|
|
refresh = (uint32_t)resolution->freq;
|
|
if (refresh)
|
|
refresh_specified = 1;
|
|
bpp = (uint32_t)resolution->bpp;
|
|
if (resolution->flags & MODE_EMUL_MONO_FLAG)
|
|
bpp = 8;
|
|
if (bpp)
|
|
bpp_specified = 1;
|
|
yres = (uint32_t)resolution->height;
|
|
if (yres)
|
|
yres_specified = 1;
|
|
xres = (uint32_t)resolution->width;
|
|
if (xres)
|
|
res_specified = 1;
|
|
}
|
|
dbg("Trying specified video mode %d x %d\r\n", xres, yres);
|
|
|
|
diff = refresh;
|
|
best = -1;
|
|
for (i = 0; i < dbsize; i++)
|
|
{
|
|
if (res_specified && res_matches(db[i], xres, yres))
|
|
{
|
|
if (!fb_try_mode(var, info, &db[i], bpp))
|
|
{
|
|
if (!refresh_specified || db[i].refresh == refresh)
|
|
return 1;
|
|
else
|
|
{
|
|
abs = db[i].refresh - refresh;
|
|
if (abs < 0)
|
|
abs = -abs;
|
|
if (diff > abs)
|
|
{
|
|
diff = abs;
|
|
best = i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (best != -1)
|
|
{
|
|
fb_try_mode(var, info, &db[best], bpp);
|
|
return 2;
|
|
}
|
|
diff = xres + yres;
|
|
dbg("Trying best-fit modes\r\n");
|
|
best = -1;
|
|
for (i = 0; i < dbsize; i++)
|
|
{
|
|
if (xres <= db[i].xres && yres <= db[i].yres)
|
|
{
|
|
dbg("Trying %d x %d\r\n", db[i].xres, db[i].yres);
|
|
|
|
if (!fb_try_mode(var, info, &db[i], bpp))
|
|
{
|
|
if (diff > (db[i].xres - xres) + (db[i].yres - yres))
|
|
{
|
|
diff = (db[i].xres - xres) + (db[i].yres - yres);
|
|
best = i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (best != -1)
|
|
{
|
|
fb_try_mode(var, info, &db[best], bpp);
|
|
return 5;
|
|
}
|
|
dbg("Trying default video mode\r\n");
|
|
if (!fb_try_mode(var, info, default_mode, default_bpp))
|
|
return 3;
|
|
dbg("Trying all modes\r\n");
|
|
for (i = 0; i < dbsize; i++)
|
|
{
|
|
if (!fb_try_mode(var, info, &db[i], default_bpp))
|
|
return 4;
|
|
}
|
|
dbg("No valid mode found\r\n");
|
|
return 0;
|
|
}
|