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| author |   Alvin Lee <alvin.lee2@amd.com> | 2020-07-22 00:32:14 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-08-04 17:29:28 -0400 |
| commit | 4453fbec106b5ab69389bf48a27af228a8434b97 (patch) | |
| tree | ee3147d075d0ffb0d876d797efa70f4ac6ae7dcf /drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | |
| parent | drm/amd/display: Add debugfs for forcing stream timing sync (diff) | |
| download | wireguard-linux-4453fbec106b5ab69389bf48a27af228a8434b97.tar.xz wireguard-linux-4453fbec106b5ab69389bf48a27af228a8434b97.zip | |
drm/amd/display: Separate pipe disconnect from rest of progrmaming
[Why]
When changing pixel formats for HDR (e.g. ARGB -> FP16)
there are configurations that change from 2 pipes to 1 pipe.
In these cases, it seems that disconnecting MPCC and doing
a surface update at the same time(after unlocking) causes
some registers to be updated slightly faster than others
after unlocking (e.g. if the pixel format is updated to FP16
before the new surface address is programmed, we get
corruption on the screen because the pixel formats aren't
matching). We separate disconnecting MPCC from the rest
of the pipe programming sequence to prevent this.
[How]
Move MPCC disconnect into separate operation than the
rest of the pipe programming.
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h index 3c986717dcd5..64c1be818b0e 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h @@ -67,6 +67,10 @@ struct hw_sequencer_funcs { int num_planes, struct dc_state *context); void (*program_front_end_for_ctx)(struct dc *dc, struct dc_state *context); + bool (*disconnect_pipes)(struct dc *dc, + struct dc_state *context); + void (*wait_for_pending_cleared)(struct dc *dc, + struct dc_state *context); void (*post_unlock_program_front_end)(struct dc *dc, struct dc_state *context); void (*update_plane_addr)(const struct dc *dc, |