SUN4I_HDMI_CEC
return readl(hdmi->base + SUN4I_HDMI_CEC) & SUN4I_HDMI_CEC_RX;
writel(SUN4I_HDMI_CEC_ENABLE, hdmi->base + SUN4I_HDMI_CEC);
writel(0, hdmi->base + SUN4I_HDMI_CEC);
writel(readl(hdmi->base + SUN4I_HDMI_CEC) & ~SUN4I_HDMI_CEC_TX,
hdmi->base + SUN4I_HDMI_CEC);