__DRM_ARGB64_PREP
__DRM_ARGB64_PREP(conv, shift); \
__DRM_ARGB64_PREP(alpha, 48) | \
__DRM_ARGB64_PREP(red, 32) | \
__DRM_ARGB64_PREP(green, 16) | \
__DRM_ARGB64_PREP(blue, 0) \