drm/amd/powerplay: add the function to set deep sleep dcefclk

This patch adds the function to set deep sleep dcefclk. It will be used on
display part.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Kevin Wang <Kevin1.Wang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -263,6 +263,7 @@ struct smu_funcs
 	int (*start_thermal_control)(struct smu_context *smu);
 	int (*read_sensor)(struct smu_context *smu, enum amd_pp_sensors sensor,
 			   void *data, uint32_t *size);
+	int (*set_deep_sleep_dcefclk)(struct smu_context *smu, uint32_t clk);
 };
 
 #define smu_init_microcode(smu) \
@@ -358,6 +359,8 @@ struct smu_funcs
 	((smu)->ppt_funcs? ((smu)->ppt_funcs->run_afll_btc? (smu)->ppt_funcs->run_afll_btc((smu)) : 0) : 0)
 #define smu_get_unallowed_feature_mask(smu, feature_mask, num) \
 	((smu)->ppt_funcs? ((smu)->ppt_funcs->get_unallowed_feature_mask? (smu)->ppt_funcs->get_unallowed_feature_mask((smu), (feature_mask), (num)) : 0) : 0)
+#define smu_set_deep_sleep_dcefclk(smu, clk) \
+	((smu)->funcs->set_deep_sleep_dcefclk ? (smu)->funcs->set_deep_sleep_dcefclk((smu), (clk)) : 0)
 
 extern int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
 				   uint16_t *size, uint8_t *frev, uint8_t *crev,

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -601,21 +601,27 @@ static int smu_v11_0_write_pptable(struct smu_context *smu)
 	return ret;
 }
 
+static int smu_v11_0_set_deep_sleep_dcefclk(struct smu_context *smu, uint32_t clk)
+{
+	int ret;
+
+	ret = smu_send_smc_msg_with_param(smu,
+					  SMU_MSG_SetMinDeepSleepDcefclk, clk);
+	if (ret)
+		pr_err("SMU11 attempt to set divider for DCEFCLK Failed!");
+
+	return ret;
+}
+
 static int smu_v11_0_set_min_dcef_deep_sleep(struct smu_context *smu)
 {
-	int ret = 0;
 	struct smu_table_context *table_context = &smu->smu_table;
 
 	if (!table_context)
 		return -EINVAL;
 
-	ret = smu_send_smc_msg_with_param(smu,
-					  SMU_MSG_SetMinDeepSleepDcefclk,
+	return smu_set_deep_sleep_dcefclk(smu,
 					  table_context->boot_values.dcefclk / 100);
-	if (ret)
-		pr_err("SMU11 attempt to set divider for DCEFCLK Failed!");
-
-	return ret;
 }
 
 static int smu_v11_0_set_tool_table_location(struct smu_context *smu)
@@ -1151,6 +1157,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.init_max_sustainable_clocks = smu_v11_0_init_max_sustainable_clocks,
 	.start_thermal_control = smu_v11_0_start_thermal_control,
 	.read_sensor = smu_v11_0_read_sensor,
+	.set_deep_sleep_dcefclk = smu_v11_0_set_deep_sleep_dcefclk,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)