*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdint.h>
-#include <sys/ioctl.h>
-#include "busybox.h"
-
-#define DEFAULTFBDEV "/dev/fb0"
+//config:config FBSET
+//config: bool "fbset (5.9 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: fbset is used to show or change the settings of a Linux frame buffer
+//config: device. The frame buffer device provides a simple and unique
+//config: interface to access a graphics display. Enable this option
+//config: if you wish to enable the 'fbset' utility.
+//config:
+//config:config FEATURE_FBSET_FANCY
+//config: bool "Enable extra options"
+//config: default y
+//config: depends on FBSET
+//config: help
+//config: This option enables extended fbset options, allowing one to set the
+//config: framebuffer size, color depth, etc. interface to access a graphics
+//config: display. Enable this option if you wish to enable extended fbset
+//config: options.
+//config:
+//config:config FEATURE_FBSET_READMODE
+//config: bool "Enable readmode support"
+//config: default y
+//config: depends on FBSET
+//config: help
+//config: This option allows fbset to read the video mode database stored by
+//config: default as /etc/fb.modes, which can be used to set frame buffer
+//config: device to pre-defined video modes.
+
+//applet:IF_FBSET(APPLET(fbset, BB_DIR_USR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_FBSET) += fbset.o
+
+//usage:#define fbset_trivial_usage
+//usage: "[OPTIONS] [MODE]"
+//usage:#define fbset_full_usage "\n\n"
+//usage: "Show and modify frame buffer settings"
+//usage:
+//usage:#define fbset_example_usage
+//usage: "$ 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"
+
+#include "libbb.h"
+
+#define DEFAULTFBDEV FB_0
#define DEFAULTFBMODE "/etc/fb.modes"
-static const int OPT_CHANGE = (1 << 0);
-static const int OPT_INFO = (1 << 1);
-static const int OPT_READMODE = (1 << 2);
+/* 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);
+
+ 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);
+
+ //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_VSYNC = 7,
CMD_LACED = 8,
CMD_DOUBLE = 9,
-/* CMD_XCOMPAT = 10, */
+/* CMD_XCOMPAT = 10, */
CMD_ALL = 11,
CMD_INFO = 12,
- CMD_CHANGE = 13,
+ CMD_SHOW = 13,
+ CMD_CHANGE = 14,
-#ifdef CONFIG_FEATURE_FBSET_FANCY
+#if ENABLE_FEATURE_FBSET_FANCY
CMD_XRES = 100,
CMD_YRES = 101,
CMD_VXRES = 102,
#endif
};
-static unsigned int g_options = 0;
-
-/* Stuff stolen from the kernel's fb.h */
-static const int FBIOGET_VSCREENINFO = 0x4600;
-static const int 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; /* guess what */
- 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_* */
-
- 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_* */
- uint32_t vmode; /* see FB_VMODE_* */
- uint32_t reserved[6]; /* Reserved for future compatibility */
-};
-
-
-const static struct cmdoptions_t {
- const char *name;
+static const struct cmdoptions_t {
+ const char name[9];
const unsigned char param_count;
const unsigned char code;
} g_cmdoptions[] = {
- {
- "-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}, {
- "-n", 0, CMD_CHANGE}, {
-#ifdef CONFIG_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}, {
+ /*"12345678" + NUL */
+//TODO: convert to index_in_strings()
+ { "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
- 0, 0, 0}
};
-#ifdef CONFIG_FEATURE_FBSET_READMODE
/* taken from linux/fb.h */
-static const int FB_VMODE_INTERLACED = 1; /* interlaced */
-static const int FB_VMODE_DOUBLE = 2; /* double scan */
-static const int FB_SYNC_HOR_HIGH_ACT = 1; /* horizontal sync high active */
-static const int FB_SYNC_VERT_HIGH_ACT = 2; /* vertical sync high active */
-static const int FB_SYNC_EXT = 4; /* external sync */
-static const int FB_SYNC_COMP_HIGH_ACT = 8; /* composite sync high active */
+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
-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 CONFIG_FEATURE_FBSET_READMODE
- FILE *f;
- char buf[256];
- char *p = buf;
-
- f = bb_xfopen(fn, "r");
- 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 ((p = strstr(buf, "geometry "))) {
- p += 9;
-
- sscanf(p, "%d %d %d %d %d",
- &(base->xres), &(base->yres),
- &(base->xres_virtual), &(base->yres_virtual),
- &(base->bits_per_pixel));
- } else if ((p = strstr(buf, "timings "))) {
- p += 8;
-
- 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 if ((p = strstr(buf, "laced "))) {
- p += 6;
-
- if (strstr(buf, "false")) {
- base->vmode &= ~FB_VMODE_INTERLACED;
- } else {
- base->vmode |= FB_VMODE_INTERLACED;
- }
- } else if ((p = strstr(buf, "double "))) {
- p += 7;
-
- if (strstr(buf, "false")) {
- base->vmode &= ~FB_VMODE_DOUBLE;
- } else {
- base->vmode |= FB_VMODE_DOUBLE;
- }
- } else if ((p = strstr(buf, "vsync "))) {
- p += 6;
-
- if (strstr(buf, "low")) {
- base->sync &= ~FB_SYNC_VERT_HIGH_ACT;
- } else {
- base->sync |= FB_SYNC_VERT_HIGH_ACT;
- }
- } else if ((p = strstr(buf, "hsync "))) {
- p += 6;
-
- if (strstr(buf, "low")) {
- base->sync &= ~FB_SYNC_HOR_HIGH_ACT;
- } else {
- base->sync |= FB_SYNC_HOR_HIGH_ACT;
- }
- } else if ((p = strstr(buf, "csync "))) {
- p += 6;
-
- if (strstr(buf, "low")) {
- base->sync &= ~FB_SYNC_COMP_HIGH_ACT;
- } else {
- base->sync |= FB_SYNC_COMP_HIGH_ACT;
- }
- } else if ((p = strstr(buf, "extsync "))) {
- p += 8;
-
- if (strstr(buf, "false")) {
- base->sync &= ~FB_SYNC_EXT;
- } else {
- base->sync |= FB_SYNC_EXT;
- }
- }
-
- 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_error_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_error_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_error_msg("???[%s][%s]", token[0], token[1]);
+ if (strcmp(token[0], "endmode") == 0) {
+//bb_error_msg("OK[%s]", mode);
+ return 1;
+ }
+ p = token[1];
+ i = index_in_strings(
+ "geometry\0timings\0interlaced\0double\0vsync\0hsync\0csync\0extsync\0rgba\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_error_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_error_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_error_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_error_msg("SYNC[%s]", p);
+ break;
+ }
+ case 7:
+ ss(&base->sync, FB_SYNC_EXT, p, "false");
+//bb_error_msg("EXTSYNC[%s]", p);
+ break;
+ case 8: {
+ int red_offset, red_length;
+ int green_offset, green_length;
+ int blue_offset, blue_length;
+ int transp_offset, transp_length;
+
+ sscanf(p, "%d/%d,%d/%d,%d/%d,%d/%d",
+ &red_length, &red_offset,
+ &green_length, &green_offset,
+ &blue_length, &blue_offset,
+ &transp_length, &transp_offset);
+ base->red.offset = red_offset;
+ base->red.length = red_length;
+ base->red.msb_right = 0;
+ base->green.offset = green_offset;
+ base->green.length = green_length;
+ base->green.msb_right = 0;
+ base->blue.offset = blue_offset;
+ base->blue.length = blue_length;
+ base->blue.msb_right = 0;
+ base->transp.offset = transp_offset;
+ base->transp.length = transp_length;
+ base->transp.msb_right = 0;
+ }
}
}
-#else
- bb_error_msg( "mode reading not compiled in");
-#endif
return 0;
}
+#endif
-static inline 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 inline 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"
-#ifdef CONFIG_FEATURE_FBSET_FANCY
+#if ENABLE_FEATURE_FBSET_FANCY
"\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n"
#endif
- "\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\nendmode\n\n",
- v->xres, v->yres, (int) (vrate + 0.5),
-#ifdef CONFIG_FEATURE_FBSET_FANCY
- drate / 1e6, hrate / 1e3, vrate,
+ "\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
- 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);
+ 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);
}
-#ifdef STANDALONE
-int main(int argc, char **argv)
-#else
-extern int fbset_main(int argc, char **argv)
-#endif
+int fbset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int fbset_main(int argc, char **argv)
{
- 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;
+ IF_FEATURE_FBSET_READMODE(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)
- bb_show_usage();
- switch (g_cmdoptions[i].code) {
- 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;
- case CMD_CHANGE:
- g_options |= OPT_CHANGE;
- break;
-#ifdef CONFIG_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;
- case CMD_DEPTH:
- varset.bits_per_pixel = strtoul(argv[1], 0, 0);
- break;
-#endif
- }
- argc -= g_cmdoptions[i].param_count;
- argv += g_cmdoptions[i].param_count;
- break;
- }
+ 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;
}
- if (!g_cmdoptions[i].name) {
- if (argc == 1) {
- mode = *argv;
- g_options |= OPT_READMODE;
- } else {
+ 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:
+ IF_FEATURE_FBSET_READMODE(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
+ }
+ 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)
- bb_perror_msg_and_die("fbset(open)");
- if (ioctl(fh, FBIOGET_VSCREENINFO, &var))
- bb_perror_msg_and_die("fbset(ioctl)");
- if (g_options & OPT_READMODE) {
- if (!readmode(&var, modefile, mode)) {
- bb_error_msg("Unknown video mode `%s'", mode);
- return EXIT_FAILURE;
+ 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))
- bb_perror_msg_and_die("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);
return EXIT_SUCCESS;
}
projects / oweals / busybox.git / blobdiff