DVO_PIPE_STALL_MASK
#define DVO_PIPE_STALL_UNUSED REG_FIELD_PREP(DVO_PIPE_STALL_MASK, 0)
#define DVO_PIPE_STALL REG_FIELD_PREP(DVO_PIPE_STALL_MASK, 1)
#define DVO_PIPE_STALL_TV REG_FIELD_PREP(DVO_PIPE_STALL_MASK, 2)