293 			       struct fb_var_screeninfo *var)  in atmel_lcdfb_update_dma()  argument
299 	dma_addr = (fix->smem_start + var->yoffset * fix->line_length  in atmel_lcdfb_update_dma()
300 		    + var->xoffset * info->var.bits_per_pixel / 8);  in atmel_lcdfb_update_dma()
326 	struct fb_var_screeninfo *var = &info->var;  in atmel_lcdfb_alloc_video_memory()  local
329 	smem_len = (var->xres_virtual * var->yres_virtual  in atmel_lcdfb_alloc_video_memory()
330 		    * ((var->bits_per_pixel + 7) / 8));  in atmel_lcdfb_alloc_video_memory()
346 static const struct fb_videomode *atmel_lcdfb_choose_mode(struct fb_var_screeninfo *var,  in atmel_lcdfb_choose_mode()  argument
352 	fb_var_to_videomode(&varfbmode, var);  in atmel_lcdfb_choose_mode()
355 		fb_videomode_to_var(var, fbmode);  in atmel_lcdfb_choose_mode()
361  *      atmel_lcdfb_check_var - Validates a var passed in.
362  *      @var: frame buffer variable screen structure
366  *	var passed in. This function does not alter the hardware
368  *	struct atmel_lcdfb_info do not change. This includes the var
372  *	this. If the var passed in is slightly off by what the
373  *	hardware can support then we alter the var PASSED in to what
378  *	needed. In this case the driver would just provide a var that
383 static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,  in atmel_lcdfb_check_var()  argument
395 	if (!(var->pixclock && var->bits_per_pixel)) {  in atmel_lcdfb_check_var()
397 		if (!atmel_lcdfb_choose_mode(var, info)) {  in atmel_lcdfb_check_var()
403 	dev_dbg(dev, "  resolution: %ux%u\n", var->xres, var->yres);  in atmel_lcdfb_check_var()
404 	dev_dbg(dev, "  pixclk:     %lu KHz\n", PICOS2KHZ(var->pixclock));  in atmel_lcdfb_check_var()
405 	dev_dbg(dev, "  bpp:        %u\n", var->bits_per_pixel);  in atmel_lcdfb_check_var()
408 	if (PICOS2KHZ(var->pixclock) > clk_value_khz) {  in atmel_lcdfb_check_var()
409 		dev_err(dev, "%lu KHz pixel clock is too fast\n", PICOS2KHZ(var->pixclock));  in atmel_lcdfb_check_var()
414 	if (var->xres > var->xres_virtual)  in atmel_lcdfb_check_var()
415 		var->xres_virtual = var->xres;  in atmel_lcdfb_check_var()
417 	if (var->yres > var->yres_virtual)  in atmel_lcdfb_check_var()
418 		var->yres_virtual = var->yres;  in atmel_lcdfb_check_var()
421 	var->xres = (var->xres + 3) & ~3UL;  in atmel_lcdfb_check_var()
422 	var->xres_virtual = (var->xres_virtual + 3) & ~3UL;  in atmel_lcdfb_check_var()
424 	var->red.msb_right = var->green.msb_right = var->blue.msb_right = 0;  in atmel_lcdfb_check_var()
425 	var->transp.msb_right = 0;  in atmel_lcdfb_check_var()
426 	var->transp.offset = var->transp.length = 0;  in atmel_lcdfb_check_var()
427 	var->xoffset = var->yoffset = 0;  in atmel_lcdfb_check_var()
430 		unsigned int smem_len = (var->xres_virtual * var->yres_virtual  in atmel_lcdfb_check_var()
431 					 * ((var->bits_per_pixel + 7) / 8));  in atmel_lcdfb_check_var()
440 	var->vsync_len = min_t(u32, var->vsync_len,  in atmel_lcdfb_check_var()
442 	var->upper_margin = min_t(u32, var->upper_margin,  in atmel_lcdfb_check_var()
444 	var->lower_margin = min_t(u32, var->lower_margin,  in atmel_lcdfb_check_var()
446 	var->right_margin = min_t(u32, var->right_margin,  in atmel_lcdfb_check_var()
448 	var->hsync_len = min_t(u32, var->hsync_len,  in atmel_lcdfb_check_var()
450 	var->left_margin = min_t(u32, var->left_margin,  in atmel_lcdfb_check_var()
454 	var->vsync_len = max_t(u32, var->vsync_len, 1);  in atmel_lcdfb_check_var()
455 	var->right_margin = max_t(u32, var->right_margin, 1);  in atmel_lcdfb_check_var()
456 	var->hsync_len = max_t(u32, var->hsync_len, 1);  in atmel_lcdfb_check_var()
457 	var->left_margin = max_t(u32, var->left_margin, 1);  in atmel_lcdfb_check_var()
459 	switch (var->bits_per_pixel) {  in atmel_lcdfb_check_var()
464 		var->red.offset = var->green.offset = var->blue.offset = 0;  in atmel_lcdfb_check_var()
465 		var->red.length = var->green.length = var->blue.length  in atmel_lcdfb_check_var()
466 			= var->bits_per_pixel;  in atmel_lcdfb_check_var()
471 			var->green.length = 5;  in atmel_lcdfb_check_var()
473 			var->green.length = 6;  in atmel_lcdfb_check_var()
477 			var->red.offset = var->green.length + 5;  in atmel_lcdfb_check_var()
478 			var->blue.offset = 0;  in atmel_lcdfb_check_var()
481 			var->red.offset = 0;  in atmel_lcdfb_check_var()
482 			var->blue.offset = var->green.length + 5;  in atmel_lcdfb_check_var()
484 		var->green.offset = 5;  in atmel_lcdfb_check_var()
485 		var->red.length = var->blue.length = 5;  in atmel_lcdfb_check_var()
488 		var->transp.offset = 24;  in atmel_lcdfb_check_var()
489 		var->transp.length = 8;  in atmel_lcdfb_check_var()
494 			var->red.offset = 16;  in atmel_lcdfb_check_var()
495 			var->blue.offset = 0;  in atmel_lcdfb_check_var()
498 			var->red.offset = 0;  in atmel_lcdfb_check_var()
499 			var->blue.offset = 16;  in atmel_lcdfb_check_var()
501 		var->green.offset = 8;  in atmel_lcdfb_check_var()
502 		var->red.length = var->green.length = var->blue.length = 8;  in atmel_lcdfb_check_var()
506 					var->bits_per_pixel);  in atmel_lcdfb_check_var()
531  *	not alter var in fb_info since we are using that data. This
532  *	means we depend on the data in var inside fb_info to be
552 		 info->var.xres, info->var.yres,  in atmel_lcdfb_set_par()
553 		 info->var.xres_virtual, info->var.yres_virtual);  in atmel_lcdfb_set_par()
557 	if (info->var.bits_per_pixel == 1)  in atmel_lcdfb_set_par()
559 	else if (info->var.bits_per_pixel <= 8)  in atmel_lcdfb_set_par()
564 	bits_per_line = info->var.xres_virtual * info->var.bits_per_pixel;  in atmel_lcdfb_set_par()
569 	atmel_lcdfb_update_dma(info, &info->var);  in atmel_lcdfb_set_par()
572 	value = (info->var.yres * info->var.xres * info->var.bits_per_pixel) / 32;  in atmel_lcdfb_set_par()
584 	value = DIV_ROUND_UP(clk_value_khz, PICOS2KHZ(info->var.pixclock));  in atmel_lcdfb_set_par()
595 		info->var.pixclock =  in atmel_lcdfb_set_par()
598 					PICOS2KHZ(info->var.pixclock));  in atmel_lcdfb_set_par()
605 	if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))  in atmel_lcdfb_set_par()
607 	if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))  in atmel_lcdfb_set_par()
610 	switch (info->var.bits_per_pixel) {  in atmel_lcdfb_set_par()
625 	value = (info->var.vsync_len - 1) << ATMEL_LCDC_VPW_OFFSET;  in atmel_lcdfb_set_par()
626 	value |= info->var.upper_margin << ATMEL_LCDC_VBP_OFFSET;  in atmel_lcdfb_set_par()
627 	value |= info->var.lower_margin;  in atmel_lcdfb_set_par()
632 	value = (info->var.right_margin - 1) << ATMEL_LCDC_HFP_OFFSET;  in atmel_lcdfb_set_par()
633 	value |= (info->var.hsync_len - 1) << ATMEL_LCDC_HPW_OFFSET;  in atmel_lcdfb_set_par()
634 	value |= (info->var.left_margin - 1);  in atmel_lcdfb_set_par()
639 	hozval_linesz = compute_hozval(sinfo, info->var.xres);  in atmel_lcdfb_set_par()
643 	value |= info->var.yres - 1;  in atmel_lcdfb_set_par()
712 	if (info->var.grayscale)  in atmel_lcdfb_setcolreg()
721 			val  = chan_to_field(red, &info->var.red);  in atmel_lcdfb_setcolreg()
722 			val |= chan_to_field(green, &info->var.green);  in atmel_lcdfb_setcolreg()
723 			val |= chan_to_field(blue, &info->var.blue);  in atmel_lcdfb_setcolreg()
773 static int atmel_lcdfb_pan_display(struct fb_var_screeninfo *var,  in atmel_lcdfb_pan_display()  argument
778 	atmel_lcdfb_update_dma(info, var);  in atmel_lcdfb_pan_display()
848 	info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;  in atmel_lcdfb_init_fbinfo()
921 	struct fb_var_screeninfo *var = &info->var;  in atmel_lcdfb_of_init()  local
942 	ret = of_property_read_u32(display_np, "bits-per-pixel", &var->bits_per_pixel);  in atmel_lcdfb_of_init()
1082 	fb_videomode_to_var(&info->var, &modelist->mode);  in atmel_lcdfb_probe()
1084 	atmel_lcdfb_check_var(&info->var, info);  in atmel_lcdfb_probe()