HDMI_AHB_DMA_MASK
writeb_relaxed((u8)~HDMI_AHB_DMA_MASK_DONE, base + HDMI_AHB_DMA_MASK);
writeb_relaxed(~0, dw->data.base + HDMI_AHB_DMA_MASK);
writeb_relaxed(~0, base + HDMI_AHB_DMA_MASK);