drm/msm/mdp5: Prepare CRTC/LM for empty stages
authorArchit Taneja <architt@codeaurora.org>
Mon, 12 Dec 2016 09:47:56 +0000 (15:17 +0530)
committerRob Clark <robdclark@gmail.com>
Mon, 6 Feb 2017 16:28:44 +0000 (11:28 -0500)
commit106f9727dda49e8047d56b4916e912cff30d4bff
treeba08972f2109fcc1e116a23951cccd0b32839974
parente5366ffe50cc1fff906d7bb45a670861a2174395
drm/msm/mdp5: Prepare CRTC/LM for empty stages

Use SSPP_NONE in mdp5_plane_pipe() if there is now hwpipe allocated for
the drm_plane. Returning '0' means we are returning VIG0 pipe.

Also, use the mdp5_pipe enum to pass around the stage array. Initialize
the stage to SSPP_NONE by default.

We do the above because 1) Cursor plane has to be staged at the topmost
blender of the LM, which can result in empty stages in between 2) In
the future, when we support multiple LMs per CRTC. We could have stages
which don't have any pipe assigned to them.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
drivers/gpu/drm/msm/mdp/mdp5/mdp5_ctl.c
drivers/gpu/drm/msm/mdp/mdp5/mdp5_ctl.h
drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c