diff options
| author | Alvin Lee <[email protected]> | 2020-02-04 15:19:21 -0500 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2020-02-25 11:03:05 -0500 |
| commit | 3c9de4da021c7c2aaa421b5c37057890348bd58a (patch) | |
| tree | 0d9d6d2f749936a3b3d4a43bbc4ca0e8f3809b28 | |
| parent | ddde28a5f31613c535609805296fd32367850390 (diff) | |
drm/amd/display: Disable PG on NV12
[Why]
According to HW team, PG is dropped for NV12, but programming
the registers will still cause power to be consumed, so don't
program for NV12.
[How]
Set function pointer to NULL if NV12
Signed-off-by: Alvin Lee <[email protected]>
Reviewed-by: Jun Lei <[email protected]>
Acked-by: Rodrigo Siqueira <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 9 |
2 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index af40ea5765f4..53083e658fe0 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1268,7 +1268,8 @@ void dcn10_init_hw(struct dc *dc) } //Enable ability to power gate / don't force power on permanently - hws->funcs.enable_power_gating_plane(hws, true); + if (hws->funcs.enable_power_gating_plane) + hws->funcs.enable_power_gating_plane(hws, true); return; } @@ -1385,8 +1386,8 @@ void dcn10_init_hw(struct dc *dc) REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0); } - - hws->funcs.enable_power_gating_plane(dc->hwseq, true); + if (hws->funcs.enable_power_gating_plane) + hws->funcs.enable_power_gating_plane(dc->hwseq, true); if (dc->clk_mgr->funcs->notify_wm_ranges) dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr); diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c index 1061faccec9c..080d4581a93d 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c @@ -3760,6 +3760,15 @@ static bool dcn20_resource_construct( dcn20_hw_sequencer_construct(dc); + // IF NV12, set PG function pointer to NULL. It's not that + // PG isn't supported for NV12, it's that we don't want to + // program the registers because that will cause more power + // to be consumed. We could have created dcn20_init_hw to get + // the same effect by checking ASIC rev, but there was a + // request at some point to not check ASIC rev on hw sequencer. + if (ASICREV_IS_NAVI12_P(dc->ctx->asic_id.hw_internal_rev)) + dc->hwseq->funcs.enable_power_gating_plane = NULL; + dc->caps.max_planes = pool->base.pipe_count; for (i = 0; i < dc->caps.max_planes; ++i) |