diff options
| author |   Jake Wang <haonan.wang2@amd.com> | 2021-10-21 19:10:17 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-11-03 12:32:34 -0400 |
| commit | 0a068b683c87a85351a06017932fb0d4ec8d6b4b (patch) | |
| tree | ecb67e5616cde6c867403855957d562166a11a1b /drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | |
| parent | drm/amd/display: fix register write sequence for LINK_SQUARE_PATTERN (diff) | |
| download | linux-dev-0a068b683c87a85351a06017932fb0d4ec8d6b4b.tar.xz linux-dev-0a068b683c87a85351a06017932fb0d4ec8d6b4b.zip | |
drm/amd/display: Added HPO HW control shutdown support
[Why]
HPO is only used for DP2.0. HPO HW control should be
disable when not being used to save power.
[How]
Shutdown HPO HW control during init hw.
Shutdown HPO HW control during stream disable.
Enable HPO HW control during stream enable if DP2.0.
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index af3e68d3e747..24e47df526f6 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -1244,6 +1244,12 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx) #endif if (dc_is_dp_signal(pipe_ctx->stream->signal)) dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISCONNECT_DIG_FE_BE); + +#if defined(CONFIG_DRM_AMD_DC_DCN) + if (dc->hwseq->funcs.setup_hpo_hw_control && is_dp_128b_132b_signal(pipe_ctx)) + dc->hwseq->funcs.setup_hpo_hw_control(dc->hwseq, false); +#endif + } void dce110_unblank_stream(struct pipe_ctx *pipe_ctx, |