video/fbdev/i740fb.c

392 static int i740fb_decode_var(const struct fb_var_screeninfo *var,
396 	 * Get the video params out of 'var'.
408 		  var->xres, var->yres, var->xres_virtual, var->xres_virtual);
410 		  var->xoffset, var->yoffset, var->bits_per_pixel,
411 		  var->grayscale);
413 		  var->activate, var->nonstd, var->vmode);
415 		  var->pixclock, var->hsync_len, var->vsync_len);
417 		  var->left_margin, var->right_margin, var->upper_margin,
418 		  var->lower_margin);
421 	bpp = var->bits_per_pixel;
425 		if ((1000000 / var->pixclock) > DACSPEED8) {
427 				1000000 / var->pixclock, DACSPEED8);
435 		if ((1000000 / var->pixclock) > DACSPEED16) {
437 				1000000 / var->pixclock, DACSPEED16);
444 		if ((1000000 / var->pixclock) > dacspeed24) {
446 				1000000 / var->pixclock, dacspeed24);
452 		if ((1000000 / var->pixclock) > DACSPEED32) {
454 				1000000 / var->pixclock, DACSPEED32);
462 	xres = ALIGN(var->xres, 8);
463 	vxres = ALIGN(var->xres_virtual, 16);
467 	xoffset = ALIGN(var->xoffset, 8);
471 	left = ALIGN(var->left_margin, 8);
472 	right = ALIGN(var->right_margin, 8);
473 	hslen = ALIGN(var->hsync_len, 8);
475 	yres = var->yres;
476 	vyres = var->yres_virtual;
480 	yoffset = var->yoffset;
484 	lower = var->lower_margin;
485 	vslen = var->vsync_len;
486 	upper = var->upper_margin;
520 	if (var->vmode & FB_VMODE_DOUBLE)
562 	if (var->sync & FB_SYNC_HOR_HIGH_ACT)
564 	if (var->sync & FB_SYNC_VERT_HIGH_ACT)
592 		par->pixelpipe_cfg1 = (var->green.length == 6) ?
646 	freq = (((u32)1e9) / var->pixclock) * (u32)(1e3);
658 		i740_calc_fifo(par, 1000000 / var->pixclock, bpp);
663 static int i740fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
665 	if (!var->pixclock)
668 	switch (var->bits_per_pixel) {
670 		var->red.offset	= var->green.offset = var->blue.offset = 0;
671 		var->red.length	= var->green.length = var->blue.length = 8;
674 		switch (var->green.length) {
677 			var->red.offset = 10;
678 			var->green.offset = 5;
679 			var->blue.offset = 0;
680 			var->red.length	= 5;
681 			var->green.length = 5;
682 			var->blue.length = 5;
685 			var->red.offset = 11;
686 			var->green.offset = 5;
687 			var->blue.offset = 0;
688 			var->red.length = var->blue.length = 5;
693 		var->red.offset = 16;
694 		var->green.offset = 8;
695 		var->blue.offset = 0;
696 		var->red.length	= var->green.length = var->blue.length = 8;
699 		var->transp.offset = 24;
700 		var->red.offset = 16;
701 		var->green.offset = 8;
702 		var->blue.offset = 0;
703 		var->transp.length = 8;
704 		var->red.length = var->green.length = var->blue.length = 8;
710 	if (var->xres > var->xres_virtual)
711 		var->xres_virtual = var->xres;
713 	if (var->yres > var->yres_virtual)
714 		var->yres_virtual = var->yres;
717 	    info->monspecs.dclkmax && fb_validate_mode(var, info) < 0)
747 	i = i740fb_decode_var(&info->var, par, info);
859 			info->var.xres_virtual * info->var.bits_per_pixel / 8;
860 	if (info->var.bits_per_pixel == 8)
875 		regno, red, green, blue, transp, info->var.bits_per_pixel);
889 		r = (red >> (16 - info->var.red.length))
890 			<< info->var.red.offset;
891 		b = (blue >> (16 - info->var.blue.length))
892 			<< info->var.blue.offset;
893 		g = (green >> (16 - info->var.green.length))
894 			<< info->var.green.offset;
904 static int i740fb_pan_display(struct fb_var_screeninfo *var,
908 	u32 base = (var->yoffset * info->var.xres_virtual
909 		 + (var->xoffset & ~7)) >> 2;
912 		var->xoffset, var->yoffset, base);
914 	switch (info->var.bits_per_pixel) {
1025 	info->var.activate = FB_ACTIVATE_NOW;
1026 	info->var.bits_per_pixel = 8;
1098 					fb_videomode_to_var(&info->var, m);
1099 					/* fill all other info->var's fields */
1100 					if (!i740fb_check_var(&info->var, info))
1111 		ret = fb_find_mode(&info->var, info, mode_option,
1114 				   NULL, info->var.bits_per_pixel);
1126 	info->var.yres_virtual = info->fix.smem_len * 8 /
1127 			(info->var.bits_per_pixel * info->var.xres_virtual);