diff options
| author | Samson Tam <Samson.Tam@amd.com> | 2020-02-04 14:26:30 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-02-25 11:03:39 -0500 |
| commit | 586ec5dc5c8ea28f46b9e27415dfd0f4de01849e (patch) | |
| tree | b275bee74fb50b5c438dcf1760ad868a3fd3625f | |
| parent | 5ea239312725ce11ec311472f4d71504d26d67e9 (diff) | |
drm/amd/display: do not force UCLK DPM to stay at highest state during display off in DCN2
[Why]
Add optimization to allow pstate change support when all displays
are off in DCN2.
[How]
Add clk_mgr_helper_get_active_plane_cnt() to sum plane_count for all
valid stream_status[]. If plane_count is 0, then there are no active
or virtual streams present. Use plane_count == 0 as extra condition to
enable p_state_change_support in dcn2_update_clocks().
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 files changed, 29 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c index a78e5c74c79c..2f43f1618db8 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c @@ -63,6 +63,25 @@ int clk_mgr_helper_get_active_display_cnt( return display_count; } +int clk_mgr_helper_get_active_plane_cnt( + struct dc *dc, + struct dc_state *context) +{ + int i, total_plane_count; + + total_plane_count = 0; + for (i = 0; i < context->stream_count; i++) { + const struct dc_stream_status stream_status = context->stream_status[i]; + + /* + * Sum up plane_count for all streams ( active and virtual ). + */ + total_plane_count += stream_status.plane_count; + } + + return total_plane_count; +} + void clk_mgr_exit_optimized_pwr_state(const struct dc *dc, struct clk_mgr *clk_mgr) { struct dc_link *edp_link = get_edp_link(dc); diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c index 49ce46b543ea..68a1120ff674 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c @@ -158,6 +158,8 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, bool dpp_clock_lowered = false; struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu; bool force_reset = false; + bool p_state_change_support; + int total_plane_count; if (dc->work_arounds.skip_clock_update) return; @@ -213,9 +215,11 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, pp_smu->set_hard_min_socclk_by_freq(&pp_smu->pp_smu, clk_mgr_base->clks.socclk_khz / 1000); } - if (should_update_pstate_support(safe_to_lower, new_clocks->p_state_change_support, clk_mgr_base->clks.p_state_change_support)) { + total_plane_count = clk_mgr_helper_get_active_plane_cnt(dc, context); + p_state_change_support = new_clocks->p_state_change_support || (total_plane_count == 0); + if (should_update_pstate_support(safe_to_lower, p_state_change_support, clk_mgr_base->clks.p_state_change_support)) { clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support; - clk_mgr_base->clks.p_state_change_support = new_clocks->p_state_change_support; + clk_mgr_base->clks.p_state_change_support = p_state_change_support; if (pp_smu && pp_smu->set_pstate_handshake_support) pp_smu->set_pstate_handshake_support(&pp_smu->pp_smu, clk_mgr_base->clks.p_state_change_support); } diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h b/drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h index 862952c0286a..9311d0de377f 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h @@ -296,6 +296,10 @@ int clk_mgr_helper_get_active_display_cnt( struct dc *dc, struct dc_state *context); +int clk_mgr_helper_get_active_plane_cnt( + struct dc *dc, + struct dc_state *context); + #endif //__DAL_CLK_MGR_INTERNAL_H__ |