From: Joshua Aberback <joshua.aberback@xxxxxxx>
[Why]
For debugging, it can be useful to be able to modify the dummy
p-state latency, this will make it easier to do so.
Signed-off-by: Joshua Aberback <joshua.aberback@xxxxxxx>
Reviewed-by: Wesley Chalmers <Wesley.Chalmers@xxxxxxx>
Acked-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 84e5056521a3..99c8e40049e6 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -478,6 +478,7 @@ struct dc_bounding_box_overrides {
int urgent_latency_ns;
int percent_of_ideal_drambw;
int dram_clock_change_latency_ns;
+ int dummy_clock_change_latency_ns;
/* This forces a hard min on the DCFCLK we use
* for DML. Unlike the debug option for forcing
* DCFCLK, this override affects watermark calculations
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 3a8a4c54738a..b7e4d0c2432c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -3467,6 +3467,13 @@ void dcn20_patch_bounding_box(struct dc *dc, struct _vcs_dpi_soc_bounding_box_st
bb->dram_clock_change_latency_us =
dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
}
+
+ if ((int)(bb->dummy_pstate_latency_us * 1000)
+ != dc->bb_overrides.dummy_clock_change_latency_ns
+ && dc->bb_overrides.dummy_clock_change_latency_ns) {
+ bb->dummy_pstate_latency_us =
+ dc->bb_overrides.dummy_clock_change_latency_ns / 1000.0;
+ }
}
static struct _vcs_dpi_soc_bounding_box_st *get_asic_rev_soc_bb(
--
2.17.1
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