[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini fbset implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
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| 6 | *
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[2725] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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[821] | 8 | *
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| 9 | * This is a from-scratch implementation of fbset; but the de facto fbset
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| 10 | * implementation was a good reference. fbset (original) is released under
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| 11 | * the GPL, and is (c) 1995-1999 by:
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| 12 | * Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
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| 13 | */
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| 14 |
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[3232] | 15 | //usage:#define fbset_trivial_usage
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| 16 | //usage: "[OPTIONS] [MODE]"
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| 17 | //usage:#define fbset_full_usage "\n\n"
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| 18 | //usage: "Show and modify frame buffer settings"
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| 19 | //usage:
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| 20 | //usage:#define fbset_example_usage
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| 21 | //usage: "$ fbset\n"
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| 22 | //usage: "mode \"1024x768-76\"\n"
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| 23 | //usage: " # D: 78.653 MHz, H: 59.949 kHz, V: 75.694 Hz\n"
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| 24 | //usage: " geometry 1024 768 1024 768 16\n"
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| 25 | //usage: " timings 12714 128 32 16 4 128 4\n"
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| 26 | //usage: " accel false\n"
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| 27 | //usage: " rgba 5/11,6/5,5/0,0/0\n"
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| 28 | //usage: "endmode\n"
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| 29 |
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[1765] | 30 | #include "libbb.h"
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[821] | 31 |
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| 32 | #define DEFAULTFBDEV FB_0
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| 33 | #define DEFAULTFBMODE "/etc/fb.modes"
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| 34 |
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| 35 | /* Stuff stolen from the kernel's fb.h */
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[1765] | 36 | #define FB_ACTIVATE_ALL 64
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[821] | 37 | enum {
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| 38 | FBIOGET_VSCREENINFO = 0x4600,
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| 39 | FBIOPUT_VSCREENINFO = 0x4601
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| 40 | };
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[2725] | 41 |
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[821] | 42 | struct fb_bitfield {
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[1765] | 43 | uint32_t offset; /* beginning of bitfield */
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[2725] | 44 | uint32_t length; /* length of bitfield */
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[1765] | 45 | uint32_t msb_right; /* !=0: Most significant bit is right */
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[821] | 46 | };
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| 47 | struct fb_var_screeninfo {
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[1765] | 48 | uint32_t xres; /* visible resolution */
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[821] | 49 | uint32_t yres;
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[1765] | 50 | uint32_t xres_virtual; /* virtual resolution */
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[821] | 51 | uint32_t yres_virtual;
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[1765] | 52 | uint32_t xoffset; /* offset from virtual to visible */
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| 53 | uint32_t yoffset; /* resolution */
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[821] | 54 |
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[1765] | 55 | uint32_t bits_per_pixel;
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| 56 | uint32_t grayscale; /* !=0 Graylevels instead of colors */
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[821] | 57 |
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[1765] | 58 | struct fb_bitfield red; /* bitfield in fb mem if true color, */
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| 59 | struct fb_bitfield green; /* else only length is significant */
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[821] | 60 | struct fb_bitfield blue;
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[1765] | 61 | struct fb_bitfield transp; /* transparency */
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[821] | 62 |
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[1765] | 63 | uint32_t nonstd; /* !=0 Non standard pixel format */
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[821] | 64 |
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[1765] | 65 | uint32_t activate; /* see FB_ACTIVATE_x */
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[821] | 66 |
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[1765] | 67 | uint32_t height; /* height of picture in mm */
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| 68 | uint32_t width; /* width of picture in mm */
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[821] | 69 |
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[2725] | 70 | uint32_t accel_flags; /* acceleration flags (hints) */
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[821] | 71 |
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| 72 | /* Timing: All values in pixclocks, except pixclock (of course) */
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[1765] | 73 | uint32_t pixclock; /* pixel clock in ps (pico seconds) */
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| 74 | uint32_t left_margin; /* time from sync to picture */
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| 75 | uint32_t right_margin; /* time from picture to sync */
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| 76 | uint32_t upper_margin; /* time from sync to picture */
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[821] | 77 | uint32_t lower_margin;
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[1765] | 78 | uint32_t hsync_len; /* length of horizontal sync */
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| 79 | uint32_t vsync_len; /* length of vertical sync */
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| 80 | uint32_t sync; /* see FB_SYNC_x */
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| 81 | uint32_t vmode; /* see FB_VMODE_x */
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| 82 | uint32_t reserved[6]; /* Reserved for future compatibility */
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[821] | 83 | };
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| 84 |
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[2725] | 85 | static void copy_if_gt0(uint32_t *src, uint32_t *dst, unsigned cnt)
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| 86 | {
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| 87 | do {
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| 88 | if ((int32_t) *src > 0)
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| 89 | *dst = *src;
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| 90 | src++;
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| 91 | dst++;
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| 92 | } while (--cnt);
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| 93 | }
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[821] | 94 |
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[2725] | 95 | static NOINLINE void copy_changed_values(
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| 96 | struct fb_var_screeninfo *base,
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| 97 | struct fb_var_screeninfo *set)
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| 98 | {
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| 99 | //if ((int32_t) set->xres > 0) base->xres = set->xres;
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| 100 | //if ((int32_t) set->yres > 0) base->yres = set->yres;
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| 101 | //if ((int32_t) set->xres_virtual > 0) base->xres_virtual = set->xres_virtual;
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| 102 | //if ((int32_t) set->yres_virtual > 0) base->yres_virtual = set->yres_virtual;
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| 103 | copy_if_gt0(&set->xres, &base->xres, 4);
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| 104 |
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| 105 | if ((int32_t) set->bits_per_pixel > 0) base->bits_per_pixel = set->bits_per_pixel;
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| 106 | //copy_if_gt0(&set->bits_per_pixel, &base->bits_per_pixel, 1);
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| 107 |
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| 108 | //if ((int32_t) set->pixclock > 0) base->pixclock = set->pixclock;
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| 109 | //if ((int32_t) set->left_margin > 0) base->left_margin = set->left_margin;
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| 110 | //if ((int32_t) set->right_margin > 0) base->right_margin = set->right_margin;
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| 111 | //if ((int32_t) set->upper_margin > 0) base->upper_margin = set->upper_margin;
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| 112 | //if ((int32_t) set->lower_margin > 0) base->lower_margin = set->lower_margin;
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| 113 | //if ((int32_t) set->hsync_len > 0) base->hsync_len = set->hsync_len;
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| 114 | //if ((int32_t) set->vsync_len > 0) base->vsync_len = set->vsync_len;
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| 115 | //if ((int32_t) set->sync > 0) base->sync = set->sync;
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| 116 | //if ((int32_t) set->vmode > 0) base->vmode = set->vmode;
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| 117 | copy_if_gt0(&set->pixclock, &base->pixclock, 9);
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| 118 | }
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| 119 |
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| 120 |
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| 121 | enum {
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| 122 | CMD_FB = 1,
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| 123 | CMD_DB = 2,
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| 124 | CMD_GEOMETRY = 3,
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| 125 | CMD_TIMING = 4,
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| 126 | CMD_ACCEL = 5,
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| 127 | CMD_HSYNC = 6,
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| 128 | CMD_VSYNC = 7,
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| 129 | CMD_LACED = 8,
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| 130 | CMD_DOUBLE = 9,
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| 131 | /* CMD_XCOMPAT = 10, */
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| 132 | CMD_ALL = 11,
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| 133 | CMD_INFO = 12,
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| 134 | CMD_SHOW = 13,
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| 135 | CMD_CHANGE = 14,
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| 136 |
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| 137 | #if ENABLE_FEATURE_FBSET_FANCY
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| 138 | CMD_XRES = 100,
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| 139 | CMD_YRES = 101,
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| 140 | CMD_VXRES = 102,
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| 141 | CMD_VYRES = 103,
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| 142 | CMD_DEPTH = 104,
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| 143 | CMD_MATCH = 105,
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| 144 | CMD_PIXCLOCK = 106,
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| 145 | CMD_LEFT = 107,
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| 146 | CMD_RIGHT = 108,
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| 147 | CMD_UPPER = 109,
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| 148 | CMD_LOWER = 110,
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| 149 | CMD_HSLEN = 111,
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| 150 | CMD_VSLEN = 112,
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| 151 | CMD_CSYNC = 113,
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| 152 | CMD_GSYNC = 114,
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| 153 | CMD_EXTSYNC = 115,
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| 154 | CMD_BCAST = 116,
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| 155 | CMD_RGBA = 117,
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| 156 | CMD_STEP = 118,
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| 157 | CMD_MOVE = 119,
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| 158 | #endif
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| 159 | };
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| 160 |
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[821] | 161 | static const struct cmdoptions_t {
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[2725] | 162 | const char name[9];
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[821] | 163 | const unsigned char param_count;
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| 164 | const unsigned char code;
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| 165 | } g_cmdoptions[] = {
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[2725] | 166 | /*"12345678" + NUL */
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| 167 | { "fb" , 1, CMD_FB },
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| 168 | { "db" , 1, CMD_DB },
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| 169 | { "a" , 0, CMD_ALL },
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| 170 | { "i" , 0, CMD_INFO },
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| 171 | { "g" , 5, CMD_GEOMETRY },
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| 172 | { "t" , 7, CMD_TIMING },
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| 173 | { "accel" , 1, CMD_ACCEL },
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| 174 | { "hsync" , 1, CMD_HSYNC },
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| 175 | { "vsync" , 1, CMD_VSYNC },
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| 176 | { "laced" , 1, CMD_LACED },
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| 177 | { "double" , 1, CMD_DOUBLE },
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| 178 | { "show" , 0, CMD_SHOW },
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| 179 | { "s" , 0, CMD_SHOW },
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[1765] | 180 | #if ENABLE_FEATURE_FBSET_FANCY
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[2725] | 181 | { "all" , 0, CMD_ALL },
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| 182 | { "xres" , 1, CMD_XRES },
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| 183 | { "yres" , 1, CMD_YRES },
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| 184 | { "vxres" , 1, CMD_VXRES },
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| 185 | { "vyres" , 1, CMD_VYRES },
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| 186 | { "depth" , 1, CMD_DEPTH },
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| 187 | { "match" , 0, CMD_MATCH },
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| 188 | { "geometry", 5, CMD_GEOMETRY },
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| 189 | { "pixclock", 1, CMD_PIXCLOCK },
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| 190 | { "left" , 1, CMD_LEFT },
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| 191 | { "right" , 1, CMD_RIGHT },
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| 192 | { "upper" , 1, CMD_UPPER },
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| 193 | { "lower" , 1, CMD_LOWER },
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| 194 | { "hslen" , 1, CMD_HSLEN },
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| 195 | { "vslen" , 1, CMD_VSLEN },
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| 196 | { "timings" , 7, CMD_TIMING },
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| 197 | { "csync" , 1, CMD_CSYNC },
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| 198 | { "gsync" , 1, CMD_GSYNC },
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| 199 | { "extsync" , 1, CMD_EXTSYNC },
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| 200 | { "bcast" , 1, CMD_BCAST },
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| 201 | { "rgba" , 1, CMD_RGBA },
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| 202 | { "step" , 1, CMD_STEP },
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| 203 | { "move" , 1, CMD_MOVE },
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[821] | 204 | #endif
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| 205 | };
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| 206 |
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| 207 | /* taken from linux/fb.h */
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| 208 | enum {
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[2725] | 209 | FB_SYNC_HOR_HIGH_ACT = 1, /* horizontal sync high active */
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| 210 | FB_SYNC_VERT_HIGH_ACT = 2, /* vertical sync high active */
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| 211 | #if ENABLE_FEATURE_FBSET_READMODE
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| 212 | FB_VMODE_INTERLACED = 1, /* interlaced */
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| 213 | FB_VMODE_DOUBLE = 2, /* double scan */
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| 214 | FB_SYNC_EXT = 4, /* external sync */
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| 215 | FB_SYNC_COMP_HIGH_ACT = 8, /* composite sync high active */
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| 216 | #endif
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[821] | 217 | };
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[1765] | 218 |
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[2725] | 219 | #if ENABLE_FEATURE_FBSET_READMODE
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| 220 | static void ss(uint32_t *x, uint32_t flag, char *buf, const char *what)
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| 221 | {
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| 222 | if (strcmp(buf, what) == 0)
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| 223 | *x &= ~flag;
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| 224 | else
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| 225 | *x |= flag;
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| 226 | }
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| 227 |
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| 228 | /* Mode db file contains mode definitions like this:
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| 229 | * mode "800x600-48-lace"
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| 230 | * # D: 36.00 MHz, H: 33.835 kHz, V: 96.39 Hz
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| 231 | * geometry 800 600 800 600 8
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| 232 | * timings 27778 56 80 79 11 128 12
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| 233 | * laced true
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| 234 | * hsync high
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| 235 | * vsync high
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| 236 | * endmode
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| 237 | */
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| 238 | static int read_mode_db(struct fb_var_screeninfo *base, const char *fn,
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[821] | 239 | const char *mode)
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| 240 | {
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[2725] | 241 | char *token[2], *p, *s;
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| 242 | parser_t *parser = config_open(fn);
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[821] | 243 |
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[2725] | 244 | while (config_read(parser, token, 2, 1, "# \t\r", PARSE_NORMAL)) {
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| 245 | if (strcmp(token[0], "mode") != 0 || !token[1])
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[1765] | 246 | continue;
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[2725] | 247 | p = strstr(token[1], mode);
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| 248 | if (!p)
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[1765] | 249 | continue;
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[2725] | 250 | s = p + strlen(mode);
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| 251 | //bb_info_msg("CHECK[%s][%s][%d]", mode, p-1, *s);
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| 252 | /* exact match? */
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| 253 | if (((!*s || isspace(*s)) && '"' != s[-1]) /* end-of-token */
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| 254 | || ('"' == *s && '"' == p[-1]) /* ends with " but starts with " too! */
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| 255 | ) {
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| 256 | //bb_info_msg("FOUND[%s][%s][%s][%d]", token[1], p, mode, isspace(*s));
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| 257 | break;
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| 258 | }
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| 259 | }
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[821] | 260 |
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[2725] | 261 | if (!token[0])
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| 262 | return 0;
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| 263 |
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| 264 | while (config_read(parser, token, 2, 1, "# \t", PARSE_NORMAL)) {
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| 265 | int i;
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| 266 |
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| 267 | //bb_info_msg("???[%s][%s]", token[0], token[1]);
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| 268 | if (strcmp(token[0], "endmode") == 0) {
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| 269 | //bb_info_msg("OK[%s]", mode);
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| 270 | return 1;
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| 271 | }
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| 272 | p = token[1];
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| 273 | i = index_in_strings(
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[3232] | 274 | "geometry\0timings\0interlaced\0double\0vsync\0hsync\0csync\0extsync\0rgba\0",
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[2725] | 275 | token[0]);
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| 276 | switch (i) {
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| 277 | case 0:
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| 278 | if (sizeof(int) == sizeof(base->xres)) {
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[1765] | 279 | sscanf(p, "%d %d %d %d %d",
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[2725] | 280 | &base->xres, &base->yres,
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| 281 | &base->xres_virtual, &base->yres_virtual,
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| 282 | &base->bits_per_pixel);
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| 283 | } else {
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| 284 | int base_xres, base_yres;
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| 285 | int base_xres_virtual, base_yres_virtual;
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| 286 | int base_bits_per_pixel;
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| 287 | sscanf(p, "%d %d %d %d %d",
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| 288 | &base_xres, &base_yres,
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| 289 | &base_xres_virtual, &base_yres_virtual,
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| 290 | &base_bits_per_pixel);
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| 291 | base->xres = base_xres;
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| 292 | base->yres = base_yres;
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| 293 | base->xres_virtual = base_xres_virtual;
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| 294 | base->yres_virtual = base_yres_virtual;
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| 295 | base->bits_per_pixel = base_bits_per_pixel;
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| 296 | }
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| 297 | //bb_info_msg("GEO[%s]", p);
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| 298 | break;
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| 299 | case 1:
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| 300 | if (sizeof(int) == sizeof(base->xres)) {
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[1765] | 301 | sscanf(p, "%d %d %d %d %d %d %d",
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[2725] | 302 | &base->pixclock,
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| 303 | &base->left_margin, &base->right_margin,
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| 304 | &base->upper_margin, &base->lower_margin,
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| 305 | &base->hsync_len, &base->vsync_len);
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| 306 | } else {
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| 307 | int base_pixclock;
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| 308 | int base_left_margin, base_right_margin;
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| 309 | int base_upper_margin, base_lower_margin;
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| 310 | int base_hsync_len, base_vsync_len;
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| 311 | sscanf(p, "%d %d %d %d %d %d %d",
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| 312 | &base_pixclock,
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| 313 | &base_left_margin, &base_right_margin,
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| 314 | &base_upper_margin, &base_lower_margin,
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| 315 | &base_hsync_len, &base_vsync_len);
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| 316 | base->pixclock = base_pixclock;
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| 317 | base->left_margin = base_left_margin;
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| 318 | base->right_margin = base_right_margin;
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| 319 | base->upper_margin = base_upper_margin;
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| 320 | base->lower_margin = base_lower_margin;
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| 321 | base->hsync_len = base_hsync_len;
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| 322 | base->vsync_len = base_vsync_len;
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[821] | 323 | }
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[2725] | 324 | //bb_info_msg("TIM[%s]", p);
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| 325 | break;
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| 326 | case 2:
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| 327 | case 3: {
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| 328 | static const uint32_t syncs[] = {FB_VMODE_INTERLACED, FB_VMODE_DOUBLE};
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| 329 | ss(&base->vmode, syncs[i-2], p, "false");
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| 330 | //bb_info_msg("VMODE[%s]", p);
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| 331 | break;
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[821] | 332 | }
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[2725] | 333 | case 4:
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| 334 | case 5:
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| 335 | case 6: {
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| 336 | static const uint32_t syncs[] = {FB_SYNC_VERT_HIGH_ACT, FB_SYNC_HOR_HIGH_ACT, FB_SYNC_COMP_HIGH_ACT};
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| 337 | ss(&base->sync, syncs[i-4], p, "low");
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| 338 | //bb_info_msg("SYNC[%s]", p);
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| 339 | break;
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| 340 | }
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| 341 | case 7:
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| 342 | ss(&base->sync, FB_SYNC_EXT, p, "false");
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| 343 | //bb_info_msg("EXTSYNC[%s]", p);
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| 344 | break;
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[3232] | 345 | case 8: {
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| 346 | int red_offset, red_length;
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| 347 | int green_offset, green_length;
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| 348 | int blue_offset, blue_length;
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| 349 | int transp_offset, transp_length;
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| 350 |
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| 351 | sscanf(p, "%d/%d,%d/%d,%d/%d,%d/%d",
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| 352 | &red_offset, &red_length,
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| 353 | &green_offset, &green_length,
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| 354 | &blue_offset, &blue_length,
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| 355 | &transp_offset, &transp_length);
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| 356 | base->red.offset = red_offset;
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| 357 | base->red.length = red_length;
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| 358 | base->red.msb_right = 0;
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| 359 | base->green.offset = green_offset;
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| 360 | base->green.length = green_length;
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| 361 | base->green.msb_right = 0;
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| 362 | base->blue.offset = blue_offset;
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| 363 | base->blue.length = blue_length;
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| 364 | base->blue.msb_right = 0;
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| 365 | base->transp.offset = transp_offset;
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| 366 | base->transp.length = transp_length;
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| 367 | base->transp.msb_right = 0;
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---|
[2725] | 368 | }
|
---|
[3232] | 369 | }
|
---|
[821] | 370 | }
|
---|
| 371 | return 0;
|
---|
| 372 | }
|
---|
[2725] | 373 | #endif
|
---|
[821] | 374 |
|
---|
[2725] | 375 | static NOINLINE void showmode(struct fb_var_screeninfo *v)
|
---|
[821] | 376 | {
|
---|
| 377 | double drate = 0, hrate = 0, vrate = 0;
|
---|
| 378 |
|
---|
| 379 | if (v->pixclock) {
|
---|
| 380 | drate = 1e12 / v->pixclock;
|
---|
[1765] | 381 | hrate = drate / (v->left_margin + v->xres + v->right_margin + v->hsync_len);
|
---|
| 382 | vrate = hrate / (v->upper_margin + v->yres + v->lower_margin + v->vsync_len);
|
---|
[821] | 383 | }
|
---|
| 384 | printf("\nmode \"%ux%u-%u\"\n"
|
---|
[1765] | 385 | #if ENABLE_FEATURE_FBSET_FANCY
|
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[821] | 386 | "\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n"
|
---|
| 387 | #endif
|
---|
[1765] | 388 | "\tgeometry %u %u %u %u %u\n"
|
---|
| 389 | "\ttimings %u %u %u %u %u %u %u\n"
|
---|
| 390 | "\taccel %s\n"
|
---|
| 391 | "\trgba %u/%u,%u/%u,%u/%u,%u/%u\n"
|
---|
| 392 | "endmode\n\n",
|
---|
| 393 | v->xres, v->yres, (int) (vrate + 0.5),
|
---|
| 394 | #if ENABLE_FEATURE_FBSET_FANCY
|
---|
| 395 | drate / 1e6, hrate / 1e3, vrate,
|
---|
[821] | 396 | #endif
|
---|
[1765] | 397 | v->xres, v->yres, v->xres_virtual, v->yres_virtual, v->bits_per_pixel,
|
---|
| 398 | v->pixclock, v->left_margin, v->right_margin, v->upper_margin, v->lower_margin,
|
---|
| 399 | v->hsync_len, v->vsync_len,
|
---|
| 400 | (v->accel_flags > 0 ? "true" : "false"),
|
---|
| 401 | v->red.length, v->red.offset, v->green.length, v->green.offset,
|
---|
| 402 | v->blue.length, v->blue.offset, v->transp.length, v->transp.offset);
|
---|
[821] | 403 | }
|
---|
| 404 |
|
---|
[2725] | 405 | int fbset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
[821] | 406 | int fbset_main(int argc, char **argv)
|
---|
| 407 | {
|
---|
[2725] | 408 | enum {
|
---|
| 409 | OPT_CHANGE = (1 << 0),
|
---|
| 410 | OPT_SHOW = (1 << 1),
|
---|
| 411 | OPT_READMODE = (1 << 2),
|
---|
[3232] | 412 | OPT_ALL = (1 << 3),
|
---|
[2725] | 413 | };
|
---|
| 414 | struct fb_var_screeninfo var_old, var_set;
|
---|
[821] | 415 | int fh, i;
|
---|
[2725] | 416 | unsigned options = 0;
|
---|
| 417 |
|
---|
[1765] | 418 | const char *fbdev = DEFAULTFBDEV;
|
---|
| 419 | const char *modefile = DEFAULTFBMODE;
|
---|
[2725] | 420 | char *thisarg;
|
---|
| 421 | char *mode = mode; /* for compiler */
|
---|
[821] | 422 |
|
---|
[2725] | 423 | memset(&var_set, 0xff, sizeof(var_set)); /* set all to -1 */
|
---|
[821] | 424 |
|
---|
| 425 | /* parse cmd args.... why do they have to make things so difficult? */
|
---|
| 426 | argv++;
|
---|
| 427 | argc--;
|
---|
[2725] | 428 | for (; argc > 0 && (thisarg = *argv) != NULL; argc--, argv++) {
|
---|
[3232] | 429 | if (thisarg[0] != '-') {
|
---|
| 430 | if (!ENABLE_FEATURE_FBSET_READMODE || argc != 1)
|
---|
| 431 | bb_show_usage();
|
---|
| 432 | mode = thisarg;
|
---|
| 433 | options |= OPT_READMODE;
|
---|
| 434 | goto contin;
|
---|
| 435 | }
|
---|
| 436 | for (i = 0; i < ARRAY_SIZE(g_cmdoptions); i++) {
|
---|
[2725] | 437 | if (strcmp(thisarg + 1, g_cmdoptions[i].name) != 0)
|
---|
[1765] | 438 | continue;
|
---|
[2725] | 439 | if (argc <= g_cmdoptions[i].param_count)
|
---|
[1765] | 440 | bb_show_usage();
|
---|
| 441 |
|
---|
| 442 | switch (g_cmdoptions[i].code) {
|
---|
| 443 | case CMD_FB:
|
---|
| 444 | fbdev = argv[1];
|
---|
| 445 | break;
|
---|
| 446 | case CMD_DB:
|
---|
| 447 | modefile = argv[1];
|
---|
| 448 | break;
|
---|
[2725] | 449 | case CMD_ALL:
|
---|
| 450 | options |= OPT_ALL;
|
---|
| 451 | break;
|
---|
| 452 | case CMD_SHOW:
|
---|
| 453 | options |= OPT_SHOW;
|
---|
| 454 | break;
|
---|
[1765] | 455 | case CMD_GEOMETRY:
|
---|
[2725] | 456 | var_set.xres = xatou32(argv[1]);
|
---|
| 457 | var_set.yres = xatou32(argv[2]);
|
---|
| 458 | var_set.xres_virtual = xatou32(argv[3]);
|
---|
| 459 | var_set.yres_virtual = xatou32(argv[4]);
|
---|
| 460 | var_set.bits_per_pixel = xatou32(argv[5]);
|
---|
[1765] | 461 | break;
|
---|
| 462 | case CMD_TIMING:
|
---|
[2725] | 463 | var_set.pixclock = xatou32(argv[1]);
|
---|
| 464 | var_set.left_margin = xatou32(argv[2]);
|
---|
| 465 | var_set.right_margin = xatou32(argv[3]);
|
---|
| 466 | var_set.upper_margin = xatou32(argv[4]);
|
---|
| 467 | var_set.lower_margin = xatou32(argv[5]);
|
---|
| 468 | var_set.hsync_len = xatou32(argv[6]);
|
---|
| 469 | var_set.vsync_len = xatou32(argv[7]);
|
---|
[1765] | 470 | break;
|
---|
[2725] | 471 | case CMD_ACCEL:
|
---|
[1765] | 472 | break;
|
---|
[2725] | 473 | case CMD_HSYNC:
|
---|
| 474 | var_set.sync |= FB_SYNC_HOR_HIGH_ACT;
|
---|
[1765] | 475 | break;
|
---|
[2725] | 476 | case CMD_VSYNC:
|
---|
| 477 | var_set.sync |= FB_SYNC_VERT_HIGH_ACT;
|
---|
| 478 | break;
|
---|
[1765] | 479 | #if ENABLE_FEATURE_FBSET_FANCY
|
---|
| 480 | case CMD_XRES:
|
---|
[2725] | 481 | var_set.xres = xatou32(argv[1]);
|
---|
[1765] | 482 | break;
|
---|
| 483 | case CMD_YRES:
|
---|
[2725] | 484 | var_set.yres = xatou32(argv[1]);
|
---|
[1765] | 485 | break;
|
---|
| 486 | case CMD_DEPTH:
|
---|
[2725] | 487 | var_set.bits_per_pixel = xatou32(argv[1]);
|
---|
[1765] | 488 | break;
|
---|
[821] | 489 | #endif
|
---|
| 490 | }
|
---|
[2725] | 491 | switch (g_cmdoptions[i].code) {
|
---|
| 492 | case CMD_FB:
|
---|
| 493 | case CMD_DB:
|
---|
| 494 | case CMD_ALL:
|
---|
| 495 | case CMD_SHOW:
|
---|
| 496 | break;
|
---|
| 497 | default:
|
---|
| 498 | /* other commands imply changes */
|
---|
| 499 | options |= OPT_CHANGE;
|
---|
| 500 | }
|
---|
[1765] | 501 | argc -= g_cmdoptions[i].param_count;
|
---|
| 502 | argv += g_cmdoptions[i].param_count;
|
---|
[2725] | 503 | goto contin;
|
---|
[821] | 504 | }
|
---|
[3232] | 505 | bb_show_usage();
|
---|
[2725] | 506 | contin: ;
|
---|
[821] | 507 | }
|
---|
| 508 |
|
---|
[1765] | 509 | fh = xopen(fbdev, O_RDONLY);
|
---|
[2725] | 510 | xioctl(fh, FBIOGET_VSCREENINFO, &var_old);
|
---|
| 511 |
|
---|
| 512 | if (options & OPT_READMODE) {
|
---|
| 513 | #if ENABLE_FEATURE_FBSET_READMODE
|
---|
| 514 | if (!read_mode_db(&var_old, modefile, mode)) {
|
---|
[1765] | 515 | bb_error_msg_and_die("unknown video mode '%s'", mode);
|
---|
[821] | 516 | }
|
---|
[3232] | 517 | options |= OPT_CHANGE;
|
---|
[2725] | 518 | #endif
|
---|
[821] | 519 | }
|
---|
| 520 |
|
---|
[2725] | 521 | if (options & OPT_CHANGE) {
|
---|
| 522 | copy_changed_values(&var_old, &var_set);
|
---|
| 523 | if (options & OPT_ALL)
|
---|
| 524 | var_old.activate = FB_ACTIVATE_ALL;
|
---|
| 525 | xioctl(fh, FBIOPUT_VSCREENINFO, &var_old);
|
---|
[1765] | 526 | }
|
---|
[821] | 527 |
|
---|
[2725] | 528 | if (options == 0 || (options & OPT_SHOW))
|
---|
| 529 | showmode(&var_old);
|
---|
| 530 |
|
---|
| 531 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 532 | close(fh);
|
---|
| 533 |
|
---|
[821] | 534 | return EXIT_SUCCESS;
|
---|
| 535 | }
|
---|