From 5622b2d68d0a6e2fd960f2129704dc3c561608b2 Mon Sep 17 00:00:00 2001 From: David Galiffi Date: Tue, 1 Oct 2019 18:29:56 -0400 Subject: [PATCH] drm/amd/display: Create debug option to disable v.active clock change policy. [WHY] It has been a useful option in debugging GFXOFF and P.State Change issues. May be required as for platform specific workaround. [HOW] Create option in enum dc_debug_options, "disable_vactive_clock_change". When it is set, dm_dram_clock_change_vactive, will translate into p_state_change_support: false. Signed-off-by: David Galiffi Reviewed-by: Jun Lei Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dc.h | 1 + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 1 + drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c | 3 ++- drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c | 6 +++--- drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h | 1 + drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c | 2 ++ drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h | 1 + 7 files changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 5d47871ff19c..cc45d77a3b0d 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -423,6 +423,7 @@ struct dc_debug_options { int force_clock_mode;/*every mode change.*/ bool nv12_iflip_vm_wa; + bool disable_dram_clock_change_vactive_support; }; struct dc_debug_data { 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 bbd1c98564be..e73a65606a4a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c @@ -2850,6 +2850,7 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context, bool full_pstate_supported = false; bool dummy_pstate_supported = false; double p_state_latency_us = context->bw_ctx.dml.soc.dram_clock_change_latency_us; + context->bw_ctx.dml.soc.disable_dram_clock_change_vactive_support = dc->debug.disable_dram_clock_change_vactive_support; if (fast_validate) return dcn20_validate_bandwidth_internal(dc, context, true); diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c index 6c6c486b774a..77b7574c63cb 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c @@ -2577,7 +2577,8 @@ static void dml20_DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPer mode_lib->vba.MinActiveDRAMClockChangeMargin + mode_lib->vba.DRAMClockChangeLatency; - if (mode_lib->vba.MinActiveDRAMClockChangeMargin > 50) { + if (mode_lib->vba.DRAMClockChangeSupportsVActive && + mode_lib->vba.MinActiveDRAMClockChangeMargin > 50) { mode_lib->vba.DRAMClockChangeWatermark += 25; mode_lib->vba.DRAMClockChangeSupport[0][0] = dm_dram_clock_change_vactive; } else { diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c index d63ca4ccf7cf..62dfd36d830a 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c @@ -2611,12 +2611,12 @@ static void dml20v2_DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndP mode_lib->vba.MinActiveDRAMClockChangeMargin + mode_lib->vba.DRAMClockChangeLatency; - - if (mode_lib->vba.MinActiveDRAMClockChangeMargin > 50) { + if (mode_lib->vba.DRAMClockChangeSupportsVActive && + mode_lib->vba.MinActiveDRAMClockChangeMargin > 50) { mode_lib->vba.DRAMClockChangeWatermark += 25; mode_lib->vba.DRAMClockChangeSupport[0][0] = dm_dram_clock_change_vactive; } else if (mode_lib->vba.DummyPStateCheck && - mode_lib->vba.MinActiveDRAMClockChangeMargin > 0) { + mode_lib->vba.MinActiveDRAMClockChangeMargin > 0) { mode_lib->vba.DRAMClockChangeSupport[0][0] = dm_dram_clock_change_vactive; } else { if (mode_lib->vba.SynchronizedVBlank || mode_lib->vba.NumberOfActivePlanes == 1) { diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h index cfacd6027467..19356180cbb6 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h @@ -112,6 +112,7 @@ struct _vcs_dpi_soc_bounding_box_st { bool do_urgent_latency_adjustment; double urgent_latency_adjustment_fabric_clock_component_us; double urgent_latency_adjustment_fabric_clock_reference_mhz; + bool disable_dram_clock_change_vactive_support; }; struct _vcs_dpi_ip_params_st { diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c index 81db8517a690..da5e9d2fd6b6 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c @@ -223,6 +223,8 @@ static void fetch_socbb_params(struct display_mode_lib *mode_lib) mode_lib->vba.SREnterPlusExitTime = soc->sr_enter_plus_exit_time_us; mode_lib->vba.DRAMClockChangeLatency = soc->dram_clock_change_latency_us; mode_lib->vba.DummyPStateCheck = soc->dram_clock_change_latency_us == soc->dummy_pstate_latency_us; + mode_lib->vba.DRAMClockChangeSupportsVActive = !soc->disable_dram_clock_change_vactive_support || + mode_lib->vba.DummyPStateCheck; mode_lib->vba.Downspreading = soc->downspread_percent; mode_lib->vba.DRAMChannelWidth = soc->dram_channel_width_bytes; // new! diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h index 6c59a332093a..6d8b5c61de68 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h @@ -156,6 +156,7 @@ struct vba_vars_st { unsigned int DSCFormatFactor; bool DummyPStateCheck; + bool DRAMClockChangeSupportsVActive; bool PrefetchModeSupported; enum self_refresh_affinity AllowDRAMSelfRefreshOrDRAMClockChangeInVblank; // Mode Support only double XFCRemoteSurfaceFlipDelay; -- 2.11.0