[PATCH 05/12] drm/amd/display: get socBB from VBIOS for dcn302 and dcn303

[Bindu Ramamurthy]

From: Aurabindo Pillai <aurabindo.pillai at amd.com>

[why]
Some SOC BB paramters may vary per SKU, and it does
not make sense for driver to hardcode these values.
This change was added for dcn30 and dcn301, but not
for dcn302 and dcn303

[how]
Parse the values from VBIOS if available, and use
them if valid
Fixes: "drm/amd/display: get socBB from VBIOS"

Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
Acked-by: Bindu Ramamurthy <bindu.r at amd.com>
---
 .../amd/display/dc/dcn302/dcn302_resource.c   | 20 +++++++++++++++++++
 .../amd/display/dc/dcn303/dcn303_resource.c   | 20 +++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
index 628b227f0a13..16a75ba0ca82 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
@@ -1102,6 +1102,26 @@ static bool init_soc_bounding_box(struct dc *dc,  struct resource_pool *pool)
 	loaded_ip->max_num_dpp = pool->pipe_count;
 	loaded_ip->clamp_min_dcfclk = dc->config.clamp_min_dcfclk;
 	dcn20_patch_bounding_box(dc, loaded_bb);
+
+	if (dc->ctx->dc_bios->funcs->get_soc_bb_info) {
+		struct bp_soc_bb_info bb_info = { 0 };
+
+		if (dc->ctx->dc_bios->funcs->get_soc_bb_info(
+			    dc->ctx->dc_bios, &bb_info) == BP_RESULT_OK) {
+			if (bb_info.dram_clock_change_latency_100ns > 0)
+				dcn3_02_soc.dram_clock_change_latency_us =
+					bb_info.dram_clock_change_latency_100ns * 10;
+
+			if (bb_info.dram_sr_enter_exit_latency_100ns > 0)
+				dcn3_02_soc.sr_enter_plus_exit_time_us =
+					bb_info.dram_sr_enter_exit_latency_100ns * 10;
+
+			if (bb_info.dram_sr_exit_latency_100ns > 0)
+				dcn3_02_soc.sr_exit_time_us =
+					bb_info.dram_sr_exit_latency_100ns * 10;
+		}
+	}
+
 	return true;
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
index 88b609c32b0a..34b89464ae02 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
@@ -1028,6 +1028,26 @@ static bool init_soc_bounding_box(struct dc *dc,  struct resource_pool *pool)
 	loaded_ip->max_num_dpp = pool->pipe_count;
 	loaded_ip->clamp_min_dcfclk = dc->config.clamp_min_dcfclk;
 	dcn20_patch_bounding_box(dc, loaded_bb);
+
+	if (dc->ctx->dc_bios->funcs->get_soc_bb_info) {
+		struct bp_soc_bb_info bb_info = { 0 };
+
+		if (dc->ctx->dc_bios->funcs->get_soc_bb_info(
+			    dc->ctx->dc_bios, &bb_info) == BP_RESULT_OK) {
+			if (bb_info.dram_clock_change_latency_100ns > 0)
+				dcn3_03_soc.dram_clock_change_latency_us =
+					bb_info.dram_clock_change_latency_100ns * 10;
+
+			if (bb_info.dram_sr_enter_exit_latency_100ns > 0)
+				dcn3_03_soc.sr_enter_plus_exit_time_us =
+					bb_info.dram_sr_enter_exit_latency_100ns * 10;
+
+			if (bb_info.dram_sr_exit_latency_100ns > 0)
+				dcn3_03_soc.sr_exit_time_us =
+					bb_info.dram_sr_exit_latency_100ns * 10;
+		}
+	}
+
 	return true;
 }
 
-- 
2.25.1