fbdev/core/modedb.c

536  *	@var: frame buffer user defined part of display
547 static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
555 	var->xres = mode->xres;
556 	var->yres = mode->yres;
557 	var->xres_virtual = mode->xres;
558 	var->yres_virtual = mode->yres;
559 	var->xoffset = 0;
560 	var->yoffset = 0;
561 	var->bits_per_pixel = bpp;
562 	var->activate |= FB_ACTIVATE_TEST;
563 	var->pixclock = mode->pixclock;
564 	var->left_margin = mode->left_margin;
565 	var->right_margin = mode->right_margin;
566 	var->upper_margin = mode->upper_margin;
567 	var->lower_margin = mode->lower_margin;
568 	var->hsync_len = mode->hsync_len;
569 	var->vsync_len = mode->vsync_len;
570 	var->sync = mode->sync;
571 	var->vmode = mode->vmode;
573 		err = info->fbops->fb_check_var(var, info);
574 	var->activate &= ~FB_ACTIVATE_TEST;
580  * @var: frame buffer user defined part of display
614  * NOTE: The passed struct @var is _not_ cleared!  This allows you
622 int fb_find_mode(struct fb_var_screeninfo *var,
749 			if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
784 			    !fb_try_mode(var, info, &db[i], bpp)) {
805 			fb_try_mode(var, info, &db[best], bpp);
814 			if (!fb_try_mode(var, info, &db[i], bpp)) {
832 			fb_try_mode(var, info, &db[best], bpp);
838 	if (!fb_try_mode(var, info, default_mode, default_bpp))
843 		if (!fb_try_mode(var, info, &db[i], default_bpp))
853  * @var: pointer to struct fb_var_screeninfo
856 			 const struct fb_var_screeninfo *var)
861 	mode->xres = var->xres;
862 	mode->yres = var->yres;
863 	mode->pixclock = var->pixclock;
864 	mode->hsync_len = var->hsync_len;
865 	mode->vsync_len = var->vsync_len;
866 	mode->left_margin = var->left_margin;
867 	mode->right_margin = var->right_margin;
868 	mode->upper_margin = var->upper_margin;
869 	mode->lower_margin = var->lower_margin;
870 	mode->sync = var->sync;
871 	mode->vmode = var->vmode & FB_VMODE_MASK;
875 	if (!var->pixclock)
878 	pixclock = PICOS2KHZ(var->pixclock) * 1000;
880 	htotal = var->xres + var->right_margin + var->hsync_len +
881 		var->left_margin;
882 	vtotal = var->yres + var->lower_margin + var->vsync_len +
883 		var->upper_margin;
885 	if (var->vmode & FB_VMODE_INTERLACED)
887 	if (var->vmode & FB_VMODE_DOUBLE)
899  * @var: pointer to struct fb_var_screeninfo
902 void fb_videomode_to_var(struct fb_var_screeninfo *var,
905 	var->xres = mode->xres;
906 	var->yres = mode->yres;
907 	var->xres_virtual = mode->xres;
908 	var->yres_virtual = mode->yres;
909 	var->xoffset = 0;
910 	var->yoffset = 0;
911 	var->pixclock = mode->pixclock;
912 	var->left_margin = mode->left_margin;
913 	var->right_margin = mode->right_margin;
914 	var->upper_margin = mode->upper_margin;
915 	var->lower_margin = mode->lower_margin;
916 	var->hsync_len = mode->hsync_len;
917 	var->vsync_len = mode->vsync_len;
918 	var->sync = mode->sync;
919 	var->vmode = mode->vmode & FB_VMODE_MASK;
948  * @var: pointer to struct fb_var_screeninfo
960  * var->xres and var->yres.  If more than 1 videomode is found, will return
963 const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
974 		if (mode->xres >= var->xres && mode->yres >= var->yres) {
975 			d = (mode->xres - var->xres) +
976 				(mode->yres - var->yres);
1028  * fb_match_mode - find a videomode which exactly matches the timings in var
1029  * @var: pointer to struct fb_var_screeninfo
1035 const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1041 	fb_var_to_videomode(&mode, var);
1175 		struct fb_var_screeninfo var;
1177 		memset(&var, 0, sizeof(struct fb_var_screeninfo));
1178 		var.xres = (specs->max_x * 7200)/254;
1179 		var.yres = (specs->max_y * 7200)/254;
1180 		m = fb_find_best_mode(&var, head);