Diff of /trunk/mkinitrd-magellan/busybox/util-linux/fbset.c

Parent Directory | Revision Log | Patch

	revision 815 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 12	Line 12
12	*     Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)	*     Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
13	*/	*/
14
15	#include "busybox.h"	#include "libbb.h"
16
17	#define DEFAULTFBDEV  FB_0	#define DEFAULTFBDEV  FB_0
18	#define DEFAULTFBMODE "/etc/fb.modes"	#define DEFAULTFBMODE "/etc/fb.modes"
19
20	enum {	enum {
	OPT_CHANGE   = (1 << 0),
	OPT_INFO     = (1 << 1),
	OPT_READMODE = (1 << 2),
	OPT_ALL      = (1 << 9),
21	CMD_FB = 1,	CMD_FB = 1,
22	CMD_DB = 2,	CMD_DB = 2,
23	CMD_GEOMETRY = 3,	CMD_GEOMETRY = 3,
#	Line 37  enum {	Line 32  enum {
32	CMD_INFO = 12,	CMD_INFO = 12,
33	CMD_CHANGE = 13,	CMD_CHANGE = 13,
34
35	#ifdef CONFIG_FEATURE_FBSET_FANCY	#if ENABLE_FEATURE_FBSET_FANCY
36	CMD_XRES = 100,	CMD_XRES = 100,
37	CMD_YRES = 101,	CMD_YRES = 101,
38	CMD_VXRES = 102,	CMD_VXRES = 102,
#	Line 61  enum {	Line 56  enum {
56	#endif	#endif
57	};	};
58
	static unsigned g_options;
59	/* Stuff stolen from the kernel's fb.h */	/* Stuff stolen from the kernel's fb.h */
60	#define FB_ACTIVATE_ALL 64	#define FB_ACTIVATE_ALL 64
61	enum {	enum {
#	Line 114  struct fb_var_screeninfo {	Line 107  struct fb_var_screeninfo {
107
108
109	static const struct cmdoptions_t {	static const struct cmdoptions_t {
110	const char name[10];	const char name[9];
111	const unsigned char param_count;	const unsigned char param_count;
112	const unsigned char code;	const unsigned char code;
113	} g_cmdoptions[] = {	} g_cmdoptions[] = {
114	{ "-fb", 1, CMD_FB },	/*"12345678" + NUL */
115	{ "-db", 1, CMD_DB },	{ "fb"      , 1, CMD_FB       },
116	{ "-a", 0, CMD_ALL },	{ "db"      , 1, CMD_DB       },
117	{ "-i", 0, CMD_INFO },	{ "a"       , 0, CMD_ALL      },
118	{ "-g", 5, CMD_GEOMETRY },	{ "i"       , 0, CMD_INFO     },
119	{ "-t", 7, CMD_TIMING },	{ "g"       , 5, CMD_GEOMETRY },
120	{ "-accel", 1, CMD_ACCEL },	{ "t"       , 7, CMD_TIMING   },
121	{ "-hsync", 1, CMD_HSYNC },	{ "accel"   , 1, CMD_ACCEL    },
122	{ "-vsync", 1, CMD_VSYNC },	{ "hsync"   , 1, CMD_HSYNC    },
123	{ "-laced", 1, CMD_LACED },	{ "vsync"   , 1, CMD_VSYNC    },
124	{ "-double", 1, CMD_DOUBLE },	{ "laced"   , 1, CMD_LACED    },
125	{ "-n", 0, CMD_CHANGE },	{ "double"  , 1, CMD_DOUBLE   },
126	#ifdef CONFIG_FEATURE_FBSET_FANCY	{ "n"       , 0, CMD_CHANGE   },
127	{ "-all", 0, CMD_ALL },	#if ENABLE_FEATURE_FBSET_FANCY
128	{ "-xres", 1, CMD_XRES },	{ "all"     , 0, CMD_ALL      },
129	{ "-yres", 1, CMD_YRES },	{ "xres"    , 1, CMD_XRES     },
130	{ "-vxres", 1, CMD_VXRES },	{ "yres"    , 1, CMD_YRES     },
131	{ "-vyres", 1, CMD_VYRES },	{ "vxres"   , 1, CMD_VXRES    },
132	{ "-depth", 1, CMD_DEPTH },	{ "vyres"   , 1, CMD_VYRES    },
133	{ "-match", 0, CMD_MATCH },	{ "depth"   , 1, CMD_DEPTH    },
134	{ "-geometry", 5, CMD_GEOMETRY },	{ "match"   , 0, CMD_MATCH    },
135	{ "-pixclock", 1, CMD_PIXCLOCK },	{ "geometry", 5, CMD_GEOMETRY },
136	{ "-left", 1, CMD_LEFT },	{ "pixclock", 1, CMD_PIXCLOCK },
137	{ "-right", 1, CMD_RIGHT },	{ "left"    , 1, CMD_LEFT     },
138	{ "-upper", 1, CMD_UPPER },	{ "right"   , 1, CMD_RIGHT    },
139	{ "-lower", 1, CMD_LOWER },	{ "upper"   , 1, CMD_UPPER    },
140	{ "-hslen", 1, CMD_HSLEN },	{ "lower"   , 1, CMD_LOWER    },
141	{ "-vslen", 1, CMD_VSLEN },	{ "hslen"   , 1, CMD_HSLEN    },
142	{ "-timings", 7, CMD_TIMING },	{ "vslen"   , 1, CMD_VSLEN    },
143	{ "-csync", 1, CMD_CSYNC },	{ "timings" , 7, CMD_TIMING   },
144	{ "-gsync", 1, CMD_GSYNC },	{ "csync"   , 1, CMD_CSYNC    },
145	{ "-extsync", 1, CMD_EXTSYNC },	{ "gsync"   , 1, CMD_GSYNC    },
146	{ "-bcast", 1, CMD_BCAST },	{ "extsync" , 1, CMD_EXTSYNC  },
147	{ "-rgba", 1, CMD_RGBA },	{ "bcast"   , 1, CMD_BCAST    },
148	{ "-step", 1, CMD_STEP },	{ "rgba"    , 1, CMD_RGBA     },
149	{ "-move", 1, CMD_MOVE },	{ "step"    , 1, CMD_STEP     },
150		{ "move"    , 1, CMD_MOVE     },
151	#endif	#endif
	{ "", 0, 0 }
152	};	};
153
154	#ifdef CONFIG_FEATURE_FBSET_READMODE	#if ENABLE_FEATURE_FBSET_READMODE
155	/* taken from linux/fb.h */	/* taken from linux/fb.h */
156	enum {	enum {
157	FB_VMODE_INTERLACED = 1, /* interlaced */	FB_VMODE_INTERLACED = 1,        /* interlaced */
158	FB_VMODE_DOUBLE = 2, /* double scan */	FB_VMODE_DOUBLE = 2,            /* double scan */
159	FB_SYNC_HOR_HIGH_ACT = 1, /* horizontal sync high active */	FB_SYNC_HOR_HIGH_ACT = 1,       /* horizontal sync high active */
160	FB_SYNC_VERT_HIGH_ACT = 2, /* vertical sync high active */	FB_SYNC_VERT_HIGH_ACT = 2,      /* vertical sync high active */
161	FB_SYNC_EXT = 4, /* external sync */	FB_SYNC_EXT = 4,                /* external sync */
162	FB_SYNC_COMP_HIGH_ACT = 8 /* composite sync high active   */	FB_SYNC_COMP_HIGH_ACT = 8,      /* composite sync high active */
163	};	};
164	#endif	#endif
165
166		#if ENABLE_FEATURE_FBSET_READMODE
167		static void ss(uint32_t *x, uint32_t flag, char *buf, const char *what)
168		{
169		if (strcmp(buf, what) == 0)
170		*x &= ~flag;
171		else
172		*x |= flag;
173		}
174
175	static int readmode(struct fb_var_screeninfo *base, const char *fn,	static int readmode(struct fb_var_screeninfo *base, const char *fn,
176	const char *mode)	const char *mode)
177	{	{
178	#ifdef CONFIG_FEATURE_FBSET_READMODE	char *token[2], *p, *s;
179	FILE *f;	parser_t *parser = config_open(fn);
180	char buf[256];
181	char *p = buf;	while (config_read(parser, token, 2, 1, "# \t\r", PARSE_NORMAL)) {
182		if (strcmp(token[0], "mode") != 0 || !token[1])
	f = xfopen(fn, "r");
	while (!feof(f)) {
	fgets(buf, sizeof(buf), f);
	if (!(p = strstr(buf, "mode ")) && !(p = strstr(buf, "mode\t")))
183	continue;	continue;
184	p += 5;	p = strstr(token[1], mode);
185	if (!(p = strstr(buf, mode)))	if (!p)
186	continue;	continue;
187	p += strlen(mode);	s = p + strlen(mode);
188	if (!isspace(*p) && (*p != 0) && (*p != '"')	//bb_info_msg("CHECK[%s][%s][%d]", mode, p-1, *s);
189	&& (*p != '\r') && (*p != '\n'))	/* exact match? */
190	continue; /* almost, but not quite */	if (((!*s || isspace(*s)) && '"' != s[-1]) /* end-of-token */
191		|| ('"' == *s && '"' == p[-1]) /* ends with " but starts with " too! */
192	while (!feof(f)) {	) {
193	fgets(buf, sizeof(buf), f);	//bb_info_msg("FOUND[%s][%s][%s][%d]", token[1], p, mode, isspace(*s));
194	if ((p = strstr(buf, "geometry "))) {	break;
195	p += 9;	}
196	/* FIXME: catastrophic on arches with 64bit ints */	}
197	sscanf(p, "%d %d %d %d %d",
198	&(base->xres), &(base->yres),	if (!token[0])
199	&(base->xres_virtual), &(base->yres_virtual),	return 0;
200	&(base->bits_per_pixel));
201	} else if ((p = strstr(buf, "timings "))) {	while (config_read(parser, token, 2, 1, "# \t", PARSE_NORMAL)) {
202	p += 8;	int i;
	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;
	}
	}
203
204	if (strstr(buf, "endmode"))	//bb_info_msg("???[%s][%s]", token[0], token[1]);
205	return 1;	if (strcmp(token[0], "endmode") == 0) {
206		//bb_info_msg("OK[%s]", mode);
207		return 1;
208		}
209		p = token[1];
210		i = index_in_strings(
211		"geometry\0timings\0interlaced\0double\0vsync\0hsync\0csync\0extsync\0",
212		token[0]);
213		switch (i) {
214		case 0:
215		/* FIXME: catastrophic on arches with 64bit ints */
216		sscanf(p, "%d %d %d %d %d",
217		&(base->xres), &(base->yres),
218		&(base->xres_virtual), &(base->yres_virtual),
219		&(base->bits_per_pixel));
220		//bb_info_msg("GEO[%s]", p);
221		break;
222		case 1:
223		sscanf(p, "%d %d %d %d %d %d %d",
224		&(base->pixclock),
225		&(base->left_margin), &(base->right_margin),
226		&(base->upper_margin), &(base->lower_margin),
227		&(base->hsync_len), &(base->vsync_len));
228		//bb_info_msg("TIM[%s]", p);
229		break;
230		case 2:
231		case 3: {
232		static const uint32_t syncs[] = {FB_VMODE_INTERLACED, FB_VMODE_DOUBLE};
233		ss(&base->vmode, syncs[i-2], p, "false");
234		//bb_info_msg("VMODE[%s]", p);
235		break;
236		}
237		case 4:
238		case 5:
239		case 6: {
240		static const uint32_t syncs[] = {FB_SYNC_VERT_HIGH_ACT, FB_SYNC_HOR_HIGH_ACT, FB_SYNC_COMP_HIGH_ACT};
241		ss(&base->sync, syncs[i-4], p, "low");
242		//bb_info_msg("SYNC[%s]", p);
243		break;
244		}
245		case 7:
246		ss(&base->sync, FB_SYNC_EXT, p, "false");
247		//bb_info_msg("EXTSYNC[%s]", p);
248		break;
249	}	}
250	}	}
	#else
	bb_error_msg("mode reading not compiled in");
	#endif
251	return 0;	return 0;
252	}	}
253		#endif
254
255	static inline void setmode(struct fb_var_screeninfo *base,	static void setmode(struct fb_var_screeninfo *base,
256	struct fb_var_screeninfo *set)	struct fb_var_screeninfo *set)
257	{	{
258	if ((int) set->xres > 0)	if ((int32_t) set->xres > 0)
259	base->xres = set->xres;	base->xres = set->xres;
260	if ((int) set->yres > 0)	if ((int32_t) set->yres > 0)
261	base->yres = set->yres;	base->yres = set->yres;
262	if ((int) set->xres_virtual > 0)	if ((int32_t) set->xres_virtual > 0)
263	base->xres_virtual = set->xres_virtual;	base->xres_virtual = set->xres_virtual;
264	if ((int) set->yres_virtual > 0)	if ((int32_t) set->yres_virtual > 0)
265	base->yres_virtual = set->yres_virtual;	base->yres_virtual = set->yres_virtual;
266	if ((int) set->bits_per_pixel > 0)	if ((int32_t) set->bits_per_pixel > 0)
267	base->bits_per_pixel = set->bits_per_pixel;	base->bits_per_pixel = set->bits_per_pixel;
268	}	}
269
270	static inline void showmode(struct fb_var_screeninfo *v)	static void showmode(struct fb_var_screeninfo *v)
271	{	{
272	double drate = 0, hrate = 0, vrate = 0;	double drate = 0, hrate = 0, vrate = 0;
273
#	Line 286  static inline void showmode(struct fb_va	Line 277  static inline void showmode(struct fb_va
277	vrate = hrate / (v->upper_margin + v->yres + v->lower_margin + v->vsync_len);	vrate = hrate / (v->upper_margin + v->yres + v->lower_margin + v->vsync_len);
278	}	}
279	printf("\nmode \"%ux%u-%u\"\n"	printf("\nmode \"%ux%u-%u\"\n"
280	#ifdef CONFIG_FEATURE_FBSET_FANCY	#if ENABLE_FEATURE_FBSET_FANCY
281	"\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n"	"\t# D: %.3f MHz, H: %.3f kHz, V: %.3f Hz\n"
282	#endif	#endif
283	"\tgeometry %u %u %u %u %u\n"	"\tgeometry %u %u %u %u %u\n"
#	Line 295  static inline void showmode(struct fb_va	Line 286  static inline void showmode(struct fb_va
286	"\trgba %u/%u,%u/%u,%u/%u,%u/%u\n"	"\trgba %u/%u,%u/%u,%u/%u,%u/%u\n"
287	"endmode\n\n",	"endmode\n\n",
288	v->xres, v->yres, (int) (vrate + 0.5),	v->xres, v->yres, (int) (vrate + 0.5),
289	#ifdef CONFIG_FEATURE_FBSET_FANCY	#if ENABLE_FEATURE_FBSET_FANCY
290	drate / 1e6, hrate / 1e3, vrate,	drate / 1e6, hrate / 1e3, vrate,
291	#endif	#endif
292	v->xres, v->yres, v->xres_virtual, v->yres_virtual, v->bits_per_pixel,	v->xres, v->yres, v->xres_virtual, v->yres_virtual, v->bits_per_pixel,
#	Line 306  static inline void showmode(struct fb_va	Line 297  static inline void showmode(struct fb_va
297	v->blue.length, v->blue.offset, v->transp.length, v->transp.offset);	v->blue.length, v->blue.offset, v->transp.length, v->transp.offset);
298	}	}
299
300	#ifdef STANDALONE	int fbset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
	int main(int argc, char **argv)
	#else
301	int fbset_main(int argc, char **argv)	int fbset_main(int argc, char **argv)
	#endif
302	{	{
303		enum {
304		OPT_CHANGE   = (1 << 0),
305		/*OPT_INFO     = (1 << 1), ??*/
306		OPT_READMODE = (1 << 2),
307		OPT_ALL      = (1 << 9),
308		};
309	struct fb_var_screeninfo var, varset;	struct fb_var_screeninfo var, varset;
310	int fh, i;	int fh, i;
311	char *fbdev = DEFAULTFBDEV;	unsigned options = 0;
312	char *modefile = DEFAULTFBMODE;
313		const char *fbdev = DEFAULTFBDEV;
314		const char *modefile = DEFAULTFBMODE;
315	char *thisarg, *mode = NULL;	char *thisarg, *mode = NULL;
316
317	memset(&varset, 0xFF, sizeof(varset));	memset(&varset, 0xff, sizeof(varset));
318
319	/* parse cmd args.... why do they have to make things so difficult? */	/* parse cmd args.... why do they have to make things so difficult? */
320	argv++;	argv++;
321	argc--;	argc--;
322	for (; argc > 0 && (thisarg = *argv); argc--, argv++) {	for (; argc > 0 && (thisarg = *argv) != NULL; argc--, argv++) {
323	for (i = 0; g_cmdoptions[i].name[0]; i++) {	if (thisarg[0] == '-') for (i = 0; i < ARRAY_SIZE(g_cmdoptions); i++) {
324	if (strcmp(thisarg, g_cmdoptions[i].name))	if (strcmp(thisarg + 1, g_cmdoptions[i].name) != 0)
325	continue;	continue;
326	if (argc-1 < g_cmdoptions[i].param_count)	if (argc <= g_cmdoptions[i].param_count)
327	bb_show_usage();	bb_show_usage();
328
329	switch (g_cmdoptions[i].code) {	switch (g_cmdoptions[i].code) {
#	Line 354  int fbset_main(int argc, char **argv)	Line 350  int fbset_main(int argc, char **argv)
350	varset.vsync_len = xatou32(argv[7]);	varset.vsync_len = xatou32(argv[7]);
351	break;	break;
352	case CMD_ALL:	case CMD_ALL:
353	g_options |= OPT_ALL;	options |= OPT_ALL;
354	break;	break;
355	case CMD_CHANGE:	case CMD_CHANGE:
356	g_options |= OPT_CHANGE;	options |= OPT_CHANGE;
357	break;	break;
358	#ifdef CONFIG_FEATURE_FBSET_FANCY	#if ENABLE_FEATURE_FBSET_FANCY
359	case CMD_XRES:	case CMD_XRES:
360	varset.xres = xatou32(argv[1]);	varset.xres = xatou32(argv[1]);
361	break;	break;
#	Line 373  int fbset_main(int argc, char **argv)	Line 369  int fbset_main(int argc, char **argv)
369	}	}
370	argc -= g_cmdoptions[i].param_count;	argc -= g_cmdoptions[i].param_count;
371	argv += g_cmdoptions[i].param_count;	argv += g_cmdoptions[i].param_count;
372	break;	goto contin;
	}
	if (!g_cmdoptions[i].name[0]) {
	if (argc != 1)
	bb_show_usage();
	mode = *argv;
	g_options |= OPT_READMODE;
373	}	}
374		if (argc != 1)
375		bb_show_usage();
376		mode = *argv;
377		options |= OPT_READMODE;
378		contin: ;
379	}	}
380
381	fh = xopen(fbdev, O_RDONLY);	fh = xopen(fbdev, O_RDONLY);
382	if (ioctl(fh, FBIOGET_VSCREENINFO, &var))	xioctl(fh, FBIOGET_VSCREENINFO, &var);
383	bb_perror_msg_and_die("ioctl(%sT_VSCREENINFO)", "GE");	if (options & OPT_READMODE) {
384	if (g_options & OPT_READMODE) {	#if !ENABLE_FEATURE_FBSET_READMODE
385		bb_show_usage();
386		#else
387	if (!readmode(&var, modefile, mode)) {	if (!readmode(&var, modefile, mode)) {
388	bb_error_msg_and_die("unknown video mode '%s'", mode);	bb_error_msg_and_die("unknown video mode '%s'", mode);
389	}	}
390		#endif
391	}	}
392
393	setmode(&var, &varset);	setmode(&var, &varset);
394	if (g_options & OPT_CHANGE) {	if (options & OPT_CHANGE) {
395	if (g_options & OPT_ALL)	if (options & OPT_ALL)
396	var.activate = FB_ACTIVATE_ALL;	var.activate = FB_ACTIVATE_ALL;
397	if (ioctl(fh, FBIOPUT_VSCREENINFO, &var))	xioctl(fh, FBIOPUT_VSCREENINFO, &var);
	bb_perror_msg_and_die("ioctl(%sT_VSCREENINFO)", "PU");
398	}	}
399	showmode(&var);	showmode(&var);
400	/* Don't close the file, as exiting will take care of that */	/* Don't close the file, as exiting will take care of that */

---

Colored Diff Long Colored Diff Full Colored Diff Unidiff Context Diff Side by Side

Legend: Removed from v.815   changed lines   Added in v.816