X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=util-linux%2Ffbset.c;h=196c2aa24ba662db631d14ca13a4a85daea6a161;hb=01339217261e3ad6f0a60c90e42e6d52580141ab;hp=7ca41733b36edc8b54e72b49186f96e2c6fb17c9;hpb=298854f02963bd8e43dfeb7224d88cfeb0c932cb;p=oweals%2Fbusybox.git diff --git a/util-linux/fbset.c b/util-linux/fbset.c index 7ca41733b..196c2aa24 100644 --- a/util-linux/fbset.c +++ b/util-linux/fbset.c @@ -4,326 +4,508 @@ * * Copyright (C) 1999 by Randolph Chung * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Licensed under GPLv2 or later, see file LICENSE in this source tree. * * This is a from-scratch implementation of fbset; but the de facto fbset * implementation was a good reference. fbset (original) is released under - * the GPL, and is (c) 1995-1999 by: + * the GPL, and is (c) 1995-1999 by: * Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be) */ -#include "internal.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define PERROR(ctx) do { perror(ctx); exit(1); } while(0) - -#ifndef KERNEL_VERSION -#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) -#endif +//usage:#define fbset_trivial_usage +//usage: "[OPTIONS] [MODE]" +//usage:#define fbset_full_usage "\n\n" +//usage: "Show and modify frame buffer settings" +//usage: +//usage:#define fbset_example_usage +//usage: "$ fbset\n" +//usage: "mode \"1024x768-76\"\n" +//usage: " # D: 78.653 MHz, H: 59.949 kHz, V: 75.694 Hz\n" +//usage: " geometry 1024 768 1024 768 16\n" +//usage: " timings 12714 128 32 16 4 128 4\n" +//usage: " accel false\n" +//usage: " rgba 5/11,6/5,5/0,0/0\n" +//usage: "endmode\n" -#define DEFAULTFBDEV "/dev/fb0" +#include "libbb.h" + +#define DEFAULTFBDEV FB_0 #define DEFAULTFBMODE "/etc/fb.modes" -#define OPT_CHANGE 1 -#define OPT_INFO (1 << 1) -#define OPT_READMODE (1 << 2) - -#define CMD_HELP 0 -#define CMD_FB 1 -#define CMD_DB 2 -#define CMD_GEOMETRY 3 -#define CMD_TIMING 4 -#define CMD_ACCEL 5 -#define CMD_HSYNC 6 -#define CMD_VSYNC 7 -#define CMD_LACED 8 -#define CMD_DOUBLE 9 -/* #define CMD_XCOMPAT 10 */ -#define CMD_ALL 11 -#define CMD_INFO 12 - -#ifdef BB_FEATURE_FBSET_FANCY -#define CMD_XRES 13 -#define CMD_YRES 14 -#define CMD_VXRES 15 -#define CMD_VYRES 16 -#define CMD_DEPTH 17 -#define CMD_MATCH 18 -#define CMD_PIXCLOCK 19 -#define CMD_LEFT 20 -#define CMD_RIGHT 21 -#define CMD_UPPER 22 -#define CMD_LOWER 23 -#define CMD_HSLEN 24 -#define CMD_VSLEN 25 -#define CMD_CSYNC 26 -#define CMD_GSYNC 27 -#define CMD_EXTSYNC 28 -#define CMD_BCAST 29 -#define CMD_RGBA 30 -#define CMD_STEP 31 -#define CMD_MOVE 32 -#endif +/* Stuff stolen from the kernel's fb.h */ +#define FB_ACTIVATE_ALL 64 +enum { + FBIOGET_VSCREENINFO = 0x4600, + FBIOPUT_VSCREENINFO = 0x4601 +}; + +struct fb_bitfield { + uint32_t offset; /* beginning of bitfield */ + uint32_t length; /* length of bitfield */ + uint32_t msb_right; /* !=0: Most significant bit is right */ +}; +struct fb_var_screeninfo { + uint32_t xres; /* visible resolution */ + uint32_t yres; + uint32_t xres_virtual; /* virtual resolution */ + uint32_t yres_virtual; + uint32_t xoffset; /* offset from virtual to visible */ + uint32_t yoffset; /* resolution */ + + uint32_t bits_per_pixel; + uint32_t grayscale; /* !=0 Graylevels instead of colors */ + + struct fb_bitfield red; /* bitfield in fb mem if true color, */ + struct fb_bitfield green; /* else only length is significant */ + struct fb_bitfield blue; + struct fb_bitfield transp; /* transparency */ + + uint32_t nonstd; /* !=0 Non standard pixel format */ + + uint32_t activate; /* see FB_ACTIVATE_x */ + + uint32_t height; /* height of picture in mm */ + uint32_t width; /* width of picture in mm */ + + uint32_t accel_flags; /* acceleration flags (hints) */ + + /* Timing: All values in pixclocks, except pixclock (of course) */ + uint32_t pixclock; /* pixel clock in ps (pico seconds) */ + uint32_t left_margin; /* time from sync to picture */ + uint32_t right_margin; /* time from picture to sync */ + uint32_t upper_margin; /* time from sync to picture */ + uint32_t lower_margin; + uint32_t hsync_len; /* length of horizontal sync */ + uint32_t vsync_len; /* length of vertical sync */ + uint32_t sync; /* see FB_SYNC_x */ + uint32_t vmode; /* see FB_VMODE_x */ + uint32_t reserved[6]; /* Reserved for future compatibility */ +}; + +static void copy_if_gt0(uint32_t *src, uint32_t *dst, unsigned cnt) +{ + do { + if ((int32_t) *src > 0) + *dst = *src; + src++; + dst++; + } while (--cnt); +} + +static NOINLINE void copy_changed_values( + struct fb_var_screeninfo *base, + struct fb_var_screeninfo *set) +{ + //if ((int32_t) set->xres > 0) base->xres = set->xres; + //if ((int32_t) set->yres > 0) base->yres = set->yres; + //if ((int32_t) set->xres_virtual > 0) base->xres_virtual = set->xres_virtual; + //if ((int32_t) set->yres_virtual > 0) base->yres_virtual = set->yres_virtual; + copy_if_gt0(&set->xres, &base->xres, 4); -static unsigned int g_options = 0; + if ((int32_t) set->bits_per_pixel > 0) base->bits_per_pixel = set->bits_per_pixel; + //copy_if_gt0(&set->bits_per_pixel, &base->bits_per_pixel, 1); -struct cmdoptions_t { - char *name; - unsigned char param_count; - unsigned char code; + //if ((int32_t) set->pixclock > 0) base->pixclock = set->pixclock; + //if ((int32_t) set->left_margin > 0) base->left_margin = set->left_margin; + //if ((int32_t) set->right_margin > 0) base->right_margin = set->right_margin; + //if ((int32_t) set->upper_margin > 0) base->upper_margin = set->upper_margin; + //if ((int32_t) set->lower_margin > 0) base->lower_margin = set->lower_margin; + //if ((int32_t) set->hsync_len > 0) base->hsync_len = set->hsync_len; + //if ((int32_t) set->vsync_len > 0) base->vsync_len = set->vsync_len; + //if ((int32_t) set->sync > 0) base->sync = set->sync; + //if ((int32_t) set->vmode > 0) base->vmode = set->vmode; + copy_if_gt0(&set->pixclock, &base->pixclock, 9); +} + + +enum { + CMD_FB = 1, + CMD_DB = 2, + CMD_GEOMETRY = 3, + CMD_TIMING = 4, + CMD_ACCEL = 5, + CMD_HSYNC = 6, + CMD_VSYNC = 7, + CMD_LACED = 8, + CMD_DOUBLE = 9, +/* CMD_XCOMPAT = 10, */ + CMD_ALL = 11, + CMD_INFO = 12, + CMD_SHOW = 13, + CMD_CHANGE = 14, + +#if ENABLE_FEATURE_FBSET_FANCY + CMD_XRES = 100, + CMD_YRES = 101, + CMD_VXRES = 102, + CMD_VYRES = 103, + CMD_DEPTH = 104, + CMD_MATCH = 105, + CMD_PIXCLOCK = 106, + CMD_LEFT = 107, + CMD_RIGHT = 108, + CMD_UPPER = 109, + CMD_LOWER = 110, + CMD_HSLEN = 111, + CMD_VSLEN = 112, + CMD_CSYNC = 113, + CMD_GSYNC = 114, + CMD_EXTSYNC = 115, + CMD_BCAST = 116, + CMD_RGBA = 117, + CMD_STEP = 118, + CMD_MOVE = 119, +#endif +}; + +static const struct cmdoptions_t { + const char name[9]; + const unsigned char param_count; + const unsigned char code; } g_cmdoptions[] = { - { - "-h", 0, CMD_HELP}, { - "-fb", 1, CMD_FB}, { - "-db", 1, CMD_DB}, { - "-a", 0, CMD_ALL}, { - "-i", 0, CMD_INFO}, { - "-g", 5, CMD_GEOMETRY}, { - "-t", 7, CMD_TIMING}, { - "-accel", 1, CMD_ACCEL}, { - "-hsync", 1, CMD_HSYNC}, { - "-vsync", 1, CMD_VSYNC}, { - "-laced", 1, CMD_LACED}, { - "-double", 1, CMD_DOUBLE}, -#ifdef BB_FEATURE_FBSET_FANCY - { - "--help", 0, CMD_HELP}, { - "-all", 0, CMD_ALL}, { - "-xres", 1, CMD_XRES}, { - "-yres", 1, CMD_YRES}, { - "-vxres", 1, CMD_VXRES}, { - "-vyres", 1, CMD_VYRES}, { - "-depth", 1, CMD_DEPTH}, { - "-match", 0, CMD_MATCH}, { - "--geometry", 5, CMD_GEOMETRY}, { - "-pixclock", 1, CMD_PIXCLOCK}, { - "-left", 1, CMD_LEFT}, { - "-right", 1, CMD_RIGHT}, { - "-upper", 1, CMD_UPPER}, { - "-lower", 1, CMD_LOWER}, { - "-hslen", 1, CMD_HSLEN}, { - "-vslen", 1, CMD_VSLEN}, { - "--timings", 7, CMD_TIMING}, { - "-csync", 1, CMD_CSYNC}, { - "-gsync", 1, CMD_GSYNC}, { - "-extsync", 1, CMD_EXTSYNC}, { - "-bcast", 1, CMD_BCAST}, { - "-rgba", 1, CMD_RGBA}, { - "-step", 1, CMD_STEP}, { - "-move", 1, CMD_MOVE}, + /*"12345678" + NUL */ + { "fb" , 1, CMD_FB }, + { "db" , 1, CMD_DB }, + { "a" , 0, CMD_ALL }, + { "i" , 0, CMD_INFO }, + { "g" , 5, CMD_GEOMETRY }, + { "t" , 7, CMD_TIMING }, + { "accel" , 1, CMD_ACCEL }, + { "hsync" , 1, CMD_HSYNC }, + { "vsync" , 1, CMD_VSYNC }, + { "laced" , 1, CMD_LACED }, + { "double" , 1, CMD_DOUBLE }, + { "show" , 0, CMD_SHOW }, + { "s" , 0, CMD_SHOW }, +#if ENABLE_FEATURE_FBSET_FANCY + { "all" , 0, CMD_ALL }, + { "xres" , 1, CMD_XRES }, + { "yres" , 1, CMD_YRES }, + { "vxres" , 1, CMD_VXRES }, + { "vyres" , 1, CMD_VYRES }, + { "depth" , 1, CMD_DEPTH }, + { "match" , 0, CMD_MATCH }, + { "geometry", 5, CMD_GEOMETRY }, + { "pixclock", 1, CMD_PIXCLOCK }, + { "left" , 1, CMD_LEFT }, + { "right" , 1, CMD_RIGHT }, + { "upper" , 1, CMD_UPPER }, + { "lower" , 1, CMD_LOWER }, + { "hslen" , 1, CMD_HSLEN }, + { "vslen" , 1, CMD_VSLEN }, + { "timings" , 7, CMD_TIMING }, + { "csync" , 1, CMD_CSYNC }, + { "gsync" , 1, CMD_GSYNC }, + { "extsync" , 1, CMD_EXTSYNC }, + { "bcast" , 1, CMD_BCAST }, + { "rgba" , 1, CMD_RGBA }, + { "step" , 1, CMD_STEP }, + { "move" , 1, CMD_MOVE }, +#endif +}; + +/* taken from linux/fb.h */ +enum { + FB_SYNC_HOR_HIGH_ACT = 1, /* horizontal sync high active */ + FB_SYNC_VERT_HIGH_ACT = 2, /* vertical sync high active */ +#if ENABLE_FEATURE_FBSET_READMODE + FB_VMODE_INTERLACED = 1, /* interlaced */ + FB_VMODE_DOUBLE = 2, /* double scan */ + FB_SYNC_EXT = 4, /* external sync */ + FB_SYNC_COMP_HIGH_ACT = 8, /* composite sync high active */ #endif - { - 0, 0, 0} }; -static int readmode(struct fb_var_screeninfo *base, const char *fn, +#if ENABLE_FEATURE_FBSET_READMODE +static void ss(uint32_t *x, uint32_t flag, char *buf, const char *what) +{ + if (strcmp(buf, what) == 0) + *x &= ~flag; + else + *x |= flag; +} + +/* Mode db file contains mode definitions like this: + * mode "800x600-48-lace" + * # D: 36.00 MHz, H: 33.835 kHz, V: 96.39 Hz + * geometry 800 600 800 600 8 + * timings 27778 56 80 79 11 128 12 + * laced true + * hsync high + * vsync high + * endmode + */ +static int read_mode_db(struct fb_var_screeninfo *base, const char *fn, const char *mode) { -#ifdef BB_FBSET_READMODE - FILE *f; - char buf[256]; - char *p = buf; - - if ((f = fopen(fn, "r")) == NULL) - PERROR("readmode(fopen)"); - while (!feof(f)) { - fgets(buf, sizeof(buf), f); - if ((p = strstr(buf, "mode ")) || (p = strstr(buf, "mode\t"))) { - p += 5; - if ((p = strstr(buf, mode))) { - p += strlen(mode); - if (!isspace(*p) && (*p != 0) && (*p != '"') - && (*p != '\r') && (*p != '\n')) - continue; /* almost, but not quite */ - while (!feof(f)) { - fgets(buf, sizeof(buf), f); - if (!strstr(buf, "endmode")) - return 1; - } + char *token[2], *p, *s; + parser_t *parser = config_open(fn); + + while (config_read(parser, token, 2, 1, "# \t\r", PARSE_NORMAL)) { + if (strcmp(token[0], "mode") != 0 || !token[1]) + continue; + p = strstr(token[1], mode); + if (!p) + continue; + s = p + strlen(mode); + //bb_info_msg("CHECK[%s][%s][%d]", mode, p-1, *s); + /* exact match? */ + if (((!*s || isspace(*s)) && '"' != s[-1]) /* end-of-token */ + || ('"' == *s && '"' == p[-1]) /* ends with " but starts with " too! */ + ) { + //bb_info_msg("FOUND[%s][%s][%s][%d]", token[1], p, mode, isspace(*s)); + break; + } + } + + if (!token[0]) + return 0; + + while (config_read(parser, token, 2, 1, "# \t", PARSE_NORMAL)) { + int i; + +//bb_info_msg("???[%s][%s]", token[0], token[1]); + if (strcmp(token[0], "endmode") == 0) { +//bb_info_msg("OK[%s]", mode); + return 1; + } + p = token[1]; + i = index_in_strings( + "geometry\0timings\0interlaced\0double\0vsync\0hsync\0csync\0extsync\0", + token[0]); + switch (i) { + case 0: + if (sizeof(int) == sizeof(base->xres)) { + sscanf(p, "%d %d %d %d %d", + &base->xres, &base->yres, + &base->xres_virtual, &base->yres_virtual, + &base->bits_per_pixel); + } else { + int base_xres, base_yres; + int base_xres_virtual, base_yres_virtual; + int base_bits_per_pixel; + sscanf(p, "%d %d %d %d %d", + &base_xres, &base_yres, + &base_xres_virtual, &base_yres_virtual, + &base_bits_per_pixel); + base->xres = base_xres; + base->yres = base_yres; + base->xres_virtual = base_xres_virtual; + base->yres_virtual = base_yres_virtual; + base->bits_per_pixel = base_bits_per_pixel; + } +//bb_info_msg("GEO[%s]", p); + break; + case 1: + if (sizeof(int) == sizeof(base->xres)) { + sscanf(p, "%d %d %d %d %d %d %d", + &base->pixclock, + &base->left_margin, &base->right_margin, + &base->upper_margin, &base->lower_margin, + &base->hsync_len, &base->vsync_len); + } else { + int base_pixclock; + int base_left_margin, base_right_margin; + int base_upper_margin, base_lower_margin; + int base_hsync_len, base_vsync_len; + sscanf(p, "%d %d %d %d %d %d %d", + &base_pixclock, + &base_left_margin, &base_right_margin, + &base_upper_margin, &base_lower_margin, + &base_hsync_len, &base_vsync_len); + base->pixclock = base_pixclock; + base->left_margin = base_left_margin; + base->right_margin = base_right_margin; + base->upper_margin = base_upper_margin; + base->lower_margin = base_lower_margin; + base->hsync_len = base_hsync_len; + base->vsync_len = base_vsync_len; } +//bb_info_msg("TIM[%s]", p); + break; + case 2: + case 3: { + static const uint32_t syncs[] = {FB_VMODE_INTERLACED, FB_VMODE_DOUBLE}; + ss(&base->vmode, syncs[i-2], p, "false"); +//bb_info_msg("VMODE[%s]", p); + break; + } + case 4: + case 5: + case 6: { + static const uint32_t syncs[] = {FB_SYNC_VERT_HIGH_ACT, FB_SYNC_HOR_HIGH_ACT, FB_SYNC_COMP_HIGH_ACT}; + ss(&base->sync, syncs[i-4], p, "low"); +//bb_info_msg("SYNC[%s]", p); + break; + } + case 7: + ss(&base->sync, FB_SYNC_EXT, p, "false"); +//bb_info_msg("EXTSYNC[%s]", p); + break; } } -#else - errorMsg( "mode reading not compiled in\n"); -#endif return 0; } +#endif -static void setmode(struct fb_var_screeninfo *base, - struct fb_var_screeninfo *set) -{ - if ((int) set->xres > 0) - base->xres = set->xres; - if ((int) set->yres > 0) - base->yres = set->yres; - if ((int) set->xres_virtual > 0) - base->xres_virtual = set->xres_virtual; - if ((int) set->yres_virtual > 0) - base->yres_virtual = set->yres_virtual; - if ((int) set->bits_per_pixel > 0) - base->bits_per_pixel = set->bits_per_pixel; -} - -static void showmode(struct fb_var_screeninfo *v) +static NOINLINE void showmode(struct fb_var_screeninfo *v) { double drate = 0, hrate = 0, vrate = 0; if (v->pixclock) { drate = 1e12 / v->pixclock; - hrate = - drate / (v->left_margin + v->xres + v->right_margin + - v->hsync_len); - vrate = - hrate / (v->upper_margin + v->yres + v->lower_margin + - v->vsync_len); + hrate = drate / (v->left_margin + v->xres + v->right_margin + v->hsync_len); + vrate = hrate / (v->upper_margin + v->yres + v->lower_margin + v->vsync_len); } - printf("\nmode \"%ux%u-%u\"\n", v->xres, v->yres, (int) (vrate + 0.5)); -#ifdef BB_FEATURE_FBSET_FANCY - printf("\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n", drate / 1e6, - hrate / 1e3, vrate); + printf("\nmode \"%ux%u-%u\"\n" +#if ENABLE_FEATURE_FBSET_FANCY + "\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n" #endif - printf("\tgeometry %u %u %u %u %u\n", v->xres, v->yres, - v->xres_virtual, v->yres_virtual, v->bits_per_pixel); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) - printf("\ttimings %u %u %u %u %u %u %u\n", v->pixclock, v->left_margin, - v->right_margin, v->upper_margin, v->lower_margin, v->hsync_len, - v->vsync_len); - printf("\taccel %s\n", (v->accel_flags > 0 ? "true" : "false")); -#else - printf("\ttimings %lu %lu %lu %lu %lu %lu %lu\n", v->pixclock, - v->left_margin, v->right_margin, v->upper_margin, - v->lower_margin, v->hsync_len, v->vsync_len); + "\tgeometry %u %u %u %u %u\n" + "\ttimings %u %u %u %u %u %u %u\n" + "\taccel %s\n" + "\trgba %u/%u,%u/%u,%u/%u,%u/%u\n" + "endmode\n\n", + v->xres, v->yres, (int) (vrate + 0.5), +#if ENABLE_FEATURE_FBSET_FANCY + drate / 1e6, hrate / 1e3, vrate, #endif - printf("\trgba %u/%u,%u/%u,%u/%u,%u/%u\n", v->red.length, - v->red.offset, v->green.length, v->green.offset, v->blue.length, - v->blue.offset, v->transp.length, v->transp.offset); - printf("endmode\n"); + v->xres, v->yres, v->xres_virtual, v->yres_virtual, v->bits_per_pixel, + v->pixclock, v->left_margin, v->right_margin, v->upper_margin, v->lower_margin, + v->hsync_len, v->vsync_len, + (v->accel_flags > 0 ? "true" : "false"), + v->red.length, v->red.offset, v->green.length, v->green.offset, + v->blue.length, v->blue.offset, v->transp.length, v->transp.offset); } -static void fbset_usage(void) +int fbset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int fbset_main(int argc, char **argv) { - int i; - -#ifndef STANDALONE - fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n", - BB_VER, BB_BT); -#endif - fprintf(stderr, "Usage: fbset [options] [mode]\n"); - fprintf(stderr, "\tThe following options are recognized:\n"); - for (i = 0; g_cmdoptions[i].name; i++) - fprintf(stderr, "\t\t%s\n", g_cmdoptions[i].name); - exit(-1); -} - -#ifdef STANDALONE -int main(int argc, char **argv) -#else -extern int fbset_main(int argc, char **argv) -#endif -{ - struct fb_var_screeninfo var, varset; + enum { + OPT_CHANGE = (1 << 0), + OPT_SHOW = (1 << 1), + OPT_READMODE = (1 << 2), + OPT_ALL = (1 << 3), + }; + struct fb_var_screeninfo var_old, var_set; int fh, i; - char *fbdev = DEFAULTFBDEV; - char *modefile = DEFAULTFBMODE; - char *thisarg, *mode = NULL; + unsigned options = 0; + + const char *fbdev = DEFAULTFBDEV; + const char *modefile = DEFAULTFBMODE; + char *thisarg; + char *mode = mode; /* for compiler */ - memset(&varset, 0xFF, sizeof(varset)); + memset(&var_set, 0xff, sizeof(var_set)); /* set all to -1 */ /* parse cmd args.... why do they have to make things so difficult? */ argv++; argc--; - for (; argc > 0 && (thisarg = *argv); argc--, argv++) { - for (i = 0; g_cmdoptions[i].name; i++) { - if (!strcmp(thisarg, g_cmdoptions[i].name)) { - if (argc - 1 < g_cmdoptions[i].param_count) - fbset_usage(); - switch (g_cmdoptions[i].code) { - case CMD_HELP: - fbset_usage(); - case CMD_FB: - fbdev = argv[1]; - break; - case CMD_DB: - modefile = argv[1]; - break; - case CMD_GEOMETRY: - varset.xres = strtoul(argv[1], 0, 0); - varset.yres = strtoul(argv[2], 0, 0); - varset.xres_virtual = strtoul(argv[3], 0, 0); - varset.yres_virtual = strtoul(argv[4], 0, 0); - varset.bits_per_pixel = strtoul(argv[5], 0, 0); - break; - case CMD_TIMING: - varset.pixclock = strtoul(argv[1], 0, 0); - varset.left_margin = strtoul(argv[2], 0, 0); - varset.right_margin = strtoul(argv[3], 0, 0); - varset.upper_margin = strtoul(argv[4], 0, 0); - varset.lower_margin = strtoul(argv[5], 0, 0); - varset.hsync_len = strtoul(argv[6], 0, 0); - varset.vsync_len = strtoul(argv[7], 0, 0); - break; -#ifdef BB_FEATURE_FBSET_FANCY - case CMD_XRES: - varset.xres = strtoul(argv[1], 0, 0); - break; - case CMD_YRES: - varset.yres = strtoul(argv[1], 0, 0); - break; -#endif - } - argc -= g_cmdoptions[i].param_count; - argv += g_cmdoptions[i].param_count; + for (; argc > 0 && (thisarg = *argv) != NULL; argc--, argv++) { + if (thisarg[0] != '-') { + if (!ENABLE_FEATURE_FBSET_READMODE || argc != 1) + bb_show_usage(); + mode = thisarg; + options |= OPT_READMODE; + goto contin; + } + for (i = 0; i < ARRAY_SIZE(g_cmdoptions); i++) { + if (strcmp(thisarg + 1, g_cmdoptions[i].name) != 0) + continue; + if (argc <= g_cmdoptions[i].param_count) + bb_show_usage(); + + switch (g_cmdoptions[i].code) { + case CMD_FB: + fbdev = argv[1]; break; + case CMD_DB: + modefile = argv[1]; + break; + case CMD_ALL: + options |= OPT_ALL; + break; + case CMD_SHOW: + options |= OPT_SHOW; + break; + case CMD_GEOMETRY: + var_set.xres = xatou32(argv[1]); + var_set.yres = xatou32(argv[2]); + var_set.xres_virtual = xatou32(argv[3]); + var_set.yres_virtual = xatou32(argv[4]); + var_set.bits_per_pixel = xatou32(argv[5]); + break; + case CMD_TIMING: + var_set.pixclock = xatou32(argv[1]); + var_set.left_margin = xatou32(argv[2]); + var_set.right_margin = xatou32(argv[3]); + var_set.upper_margin = xatou32(argv[4]); + var_set.lower_margin = xatou32(argv[5]); + var_set.hsync_len = xatou32(argv[6]); + var_set.vsync_len = xatou32(argv[7]); + break; + case CMD_ACCEL: + break; + case CMD_HSYNC: + var_set.sync |= FB_SYNC_HOR_HIGH_ACT; + break; + case CMD_VSYNC: + var_set.sync |= FB_SYNC_VERT_HIGH_ACT; + break; +#if ENABLE_FEATURE_FBSET_FANCY + case CMD_XRES: + var_set.xres = xatou32(argv[1]); + break; + case CMD_YRES: + var_set.yres = xatou32(argv[1]); + break; + case CMD_DEPTH: + var_set.bits_per_pixel = xatou32(argv[1]); + break; +#endif } - } - if (!g_cmdoptions[i].name) { - if (argc == 1) { - mode = *argv; - g_options |= OPT_READMODE; - } else { - fbset_usage(); + switch (g_cmdoptions[i].code) { + case CMD_FB: + case CMD_DB: + case CMD_ALL: + case CMD_SHOW: + break; + default: + /* other commands imply changes */ + options |= OPT_CHANGE; } + argc -= g_cmdoptions[i].param_count; + argv += g_cmdoptions[i].param_count; + goto contin; } + bb_show_usage(); + contin: ; } - if ((fh = open(fbdev, O_RDONLY)) < 0) - PERROR("fbset(open)"); - if (ioctl(fh, FBIOGET_VSCREENINFO, &var)) - PERROR("fbset(ioctl)"); - if (g_options & OPT_READMODE) { - if (!readmode(&var, modefile, mode)) { - fprintf(stderr, "Unknown video mode `%s'\n", mode); - exit(1); + fh = xopen(fbdev, O_RDONLY); + xioctl(fh, FBIOGET_VSCREENINFO, &var_old); + + if (options & OPT_READMODE) { +#if ENABLE_FEATURE_FBSET_READMODE + if (!read_mode_db(&var_old, modefile, mode)) { + bb_error_msg_and_die("unknown video mode '%s'", mode); } + options |= OPT_CHANGE; +#endif } - setmode(&var, &varset); - if (g_options & OPT_CHANGE) - if (ioctl(fh, FBIOPUT_VSCREENINFO, &var)) - PERROR("fbset(ioctl)"); - showmode(&var); - /* Don't close the file, as exiting will take care of that */ - /* close(fh); */ + if (options & OPT_CHANGE) { + copy_changed_values(&var_old, &var_set); + if (options & OPT_ALL) + var_old.activate = FB_ACTIVATE_ALL; + xioctl(fh, FBIOPUT_VSCREENINFO, &var_old); + } + + if (options == 0 || (options & OPT_SHOW)) + showmode(&var_old); + + if (ENABLE_FEATURE_CLEAN_UP) + close(fh); - exit (TRUE); + return EXIT_SUCCESS; }