#define AVIVO_D1CRTC_CONTROL 0x6080
# define AVIVO_CRTC_EN (1 << 0)
+# define AVIVO_CRTC_DISP_READ_REQUEST_DISABLE (1 << 24)
#define AVIVO_D1CRTC_BLANK_CONTROL 0x6084
#define AVIVO_D1CRTC_INTERLACE_CONTROL 0x6088
#define AVIVO_D1CRTC_INTERLACE_STATUS 0x608c