ATMEL_LCDC_DMACON
lcdc_writel(sinfo, ATMEL_LCDC_DMACON, 0);
while (lcdc_readl(sinfo, ATMEL_LCDC_DMACON) & ATMEL_LCDC_DMABUSY)
lcdc_writel(sinfo, ATMEL_LCDC_DMACON, pdata->default_dmacon);
while (lcdc_readl(sinfo, ATMEL_LCDC_DMACON) & ATMEL_LCDC_DMABUSY)