[PATCH 12/17] drm/amd/display: Add wm table for Renoir

[Eryk Brol]

From: Sung Lee <sung.lee at amd.com>

[Why]
Without additional HostVM Latency, Renoir takes 2us longer to exit
self-refresh. This causes underflow in certain cases.

[How]
Add table for Renoir with updated sr exit latencies for WM set A.

Signed-off-by: Sung Lee <sung.lee at amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun at amd.com>
Reviewed-by: Roman Li <Roman.Li at amd.com>
Acked-by: Eryk Brol <eryk.brol at amd.com>
---
 .../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 93 ++++++++++++++++++-
 1 file changed, 89 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index fe6dc1e68e60..6f4fe8fce6b7 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -621,7 +621,7 @@ static struct clk_bw_params rn_bw_params = {
 
 };
 
-static struct wm_table ddr4_wm_table = {
+static struct wm_table ddr4_wm_table_gs = {
 	.entries = {
 		{
 			.wm_inst = WM_A,
@@ -658,7 +658,7 @@ static struct wm_table ddr4_wm_table = {
 	}
 };
 
-static struct wm_table lpddr4_wm_table = {
+static struct wm_table lpddr4_wm_table_gs = {
 	.entries = {
 		{
 			.wm_inst = WM_A,
@@ -732,6 +732,80 @@ static struct wm_table lpddr4_wm_table_with_disabled_ppt = {
 	}
 };
 
+static struct wm_table ddr4_wm_table_rn = {
+	.entries = {
+		{
+			.wm_inst = WM_A,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.72,
+			.sr_exit_time_us = 9.09,
+			.sr_enter_plus_exit_time_us = 10.14,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_B,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.72,
+			.sr_exit_time_us = 10.12,
+			.sr_enter_plus_exit_time_us = 11.48,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_C,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.72,
+			.sr_exit_time_us = 10.12,
+			.sr_enter_plus_exit_time_us = 11.48,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_D,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.72,
+			.sr_exit_time_us = 10.12,
+			.sr_enter_plus_exit_time_us = 11.48,
+			.valid = true,
+		},
+	}
+};
+
+static struct wm_table lpddr4_wm_table_rn = {
+	.entries = {
+		{
+			.wm_inst = WM_A,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 7.32,
+			.sr_enter_plus_exit_time_us = 8.38,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_B,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.82,
+			.sr_enter_plus_exit_time_us = 11.196,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_C,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.89,
+			.sr_enter_plus_exit_time_us = 11.24,
+			.valid = true,
+		},
+		{
+			.wm_inst = WM_D,
+			.wm_type = WM_TYPE_PSTATE_CHG,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.748,
+			.sr_enter_plus_exit_time_us = 11.102,
+			.valid = true,
+		},
+	}
+};
+
 static unsigned int find_dcfclk_for_voltage(struct dpm_clocks *clock_table, unsigned int voltage)
 {
 	int i;
@@ -813,6 +887,11 @@ void rn_clk_mgr_construct(
 	struct dc_debug_options *debug = &ctx->dc->debug;
 	struct dpm_clocks clock_table = { 0 };
 	enum pp_smu_status status = 0;
+	int is_green_sardine = 0;
+
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	is_green_sardine = ASICREV_IS_GREEN_SARDINE(ctx->asic_id.hw_internal_rev);
+#endif
 
 	clk_mgr->base.ctx = ctx;
 	clk_mgr->base.funcs = &dcn21_funcs;
@@ -853,10 +932,16 @@ void rn_clk_mgr_construct(
 			if (clk_mgr->periodic_retraining_disabled) {
 				rn_bw_params.wm_table = lpddr4_wm_table_with_disabled_ppt;
 			} else {
-				rn_bw_params.wm_table = lpddr4_wm_table;
+				if (is_green_sardine)
+					rn_bw_params.wm_table = lpddr4_wm_table_gs;
+				else
+					rn_bw_params.wm_table = lpddr4_wm_table_rn;
 			}
 		} else {
-			rn_bw_params.wm_table = ddr4_wm_table;
+			if (is_green_sardine)
+				rn_bw_params.wm_table = ddr4_wm_table_gs;
+			else
+				rn_bw_params.wm_table = ddr4_wm_table_rn;
 		}
 		/* Saved clocks configured at boot for debug purposes */
 		rn_dump_clk_registers(&clk_mgr->base.boot_snapshot, &clk_mgr->base, &log_info);
-- 
2.25.1