PIPE_LEFT
stage[pstate->stage][PIPE_LEFT] = mdp5_plane_pipe(plane);
r_stage[pstate->stage][PIPE_LEFT] =
mdp_ctl_blend_mask(stage[i][PIPE_LEFT], i) |
mdp_ctl_blend_ext_mask(stage[i][PIPE_LEFT], i) |
mdp_ctl_blend_mask(r_stage[i][PIPE_LEFT], i) |
mdp_ctl_blend_ext_mask(r_stage[i][PIPE_LEFT], i) |