drm/amd/display: adding pathway to retrieve stutter period

why:
some functions may need be dependent on stutter period in the future

how:
Extract from stutter calculations and place into perf_params structure

Signed-off-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
index 88f23f1..168e6e4 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -2210,6 +2210,9 @@ static void dcn30_calculate_wm(
        context->bw_ctx.bw.dcn.watermarks.a.frac_urg_bw_flip = get_fraction_of_urgent_bandwidth_imm_flip(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
        context->bw_ctx.bw.dcn.watermarks.a.urgent_latency_ns = get_urgent_latency(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
 
+       context->perf_params.stutter_period_us =
+               context->bw_ctx.dml.vba.StutterPeriod;
+
        for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
                if (!context->res_ctx.pipe_ctx[i].stream)
                        continue;

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
index 2beb284..8f8bf83 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
@@ -597,7 +597,8 @@ static void CalculateStutterEfficiency(
                double meta_row_bw[],
                double dpte_row_bw[],
                double *StutterEfficiencyNotIncludingVBlank,
-               double *StutterEfficiency);
+               double *StutterEfficiency,
+               double *StutterPeriodOut);
 
 static void CalculateSwathAndDETConfiguration(
                bool ForceSingleDPP,
@@ -3134,7 +3135,8 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
                        v->meta_row_bw,
                        v->dpte_row_bw,
                        &v->StutterEfficiencyNotIncludingVBlank,
-                       &v->StutterEfficiency);
+                       &v->StutterEfficiency,
+                       &v->StutterPeriod);
 }
 
 static void DisplayPipeConfiguration(struct display_mode_lib *mode_lib)
@@ -6151,7 +6153,8 @@ static void CalculateStutterEfficiency(
                double meta_row_bw[],
                double dpte_row_bw[],
                double *StutterEfficiencyNotIncludingVBlank,
-               double *StutterEfficiency)
+               double *StutterEfficiency,
+               double *StutterPeriodOut)
 {
        double FullDETBufferingTimeY[DC__NUM_DPP__MAX] = { 0 };
        double FrameTimeForMinFullDETBufferingTime = 0;
@@ -6262,6 +6265,9 @@ static void CalculateStutterEfficiency(
        }
 
        *StutterEfficiency =  (*StutterEfficiencyNotIncludingVBlank / 100.0 * (FrameTimeForMinFullDETBufferingTime - SmallestVBlank) + SmallestVBlank) / FrameTimeForMinFullDETBufferingTime * 100;
+
+       if (StutterPeriodOut)
+               *StutterPeriodOut = StutterPeriod;
 }
 
 static void CalculateSwathAndDETConfiguration(

diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index cc5f053..3ec1d9d 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -411,6 +411,10 @@ struct dc_state {
        struct clk_mgr *clk_mgr;
 
        struct kref refcount;
+
+       struct {
+               unsigned int stutter_period_us;
+       } perf_params;
 };
 
 #endif /* _CORE_TYPES_H_ */