From 0478d6d213624f6a500fb808a67fa5f402cca2fc Mon Sep 17 00:00:00 2001
From: Alvin Lee <alvin.lee2@amd.com>
Date: Wed, 20 Jul 2022 13:16:59 -0400
Subject: drm/amd/display: Add a variable to update FCLK latency
Git-commit: 0cd34ce82b0a9ce503d35a51bff47ba3b6715557
Patch-mainline: v6.0-rc2
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
[Description]
Add a variable to update FCLK latency
Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 7 +++++++
drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c | 7 +++++++
3 files changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 8e1e40083ec8..d73e68c2fd51 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -609,6 +609,7 @@ struct dc_bounding_box_overrides {
int percent_of_ideal_drambw;
int dram_clock_change_latency_ns;
int dummy_clock_change_latency_ns;
+ int fclk_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/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 66453546e24f..f8023cfe79f8 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -2098,6 +2098,13 @@ void dcn32_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_pa
dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
}
+ if ((int)(dcn3_2_soc.fclk_change_latency_us * 1000)
+ != dc->bb_overrides.fclk_clock_change_latency_ns
+ && dc->bb_overrides.fclk_clock_change_latency_ns) {
+ dcn3_2_soc.fclk_change_latency_us =
+ dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
+ }
+
if ((int)(dcn3_2_soc.dummy_pstate_latency_us * 1000)
!= dc->bb_overrides.dummy_clock_change_latency_ns
&& dc->bb_overrides.dummy_clock_change_latency_ns) {
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
index 84b4b00f29cb..c87091683b5d 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
@@ -498,6 +498,13 @@ void dcn321_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_p
dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
}
+ if ((int)(dcn3_21_soc.fclk_change_latency_us * 1000)
+ != dc->bb_overrides.fclk_clock_change_latency_ns
+ && dc->bb_overrides.fclk_clock_change_latency_ns) {
+ dcn3_21_soc.fclk_change_latency_us =
+ dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
+ }
+
if ((int)(dcn3_21_soc.dummy_pstate_latency_us * 1000)
!= dc->bb_overrides.dummy_clock_change_latency_ns
&& dc->bb_overrides.dummy_clock_change_latency_ns) {
--
2.38.1