drm/amd/powerplay: implement smu_init_display for smu11

Add smu_init_display function to send msg to smc to init display.
Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -236,6 +236,10 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
 {
 	int ret;
 
+	ret = smu_init_display(smu);
+	if (ret)
+		return ret;
+
 	ret = smu_read_pptable_from_vbios(smu);
 	if (ret)
 		return ret;

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

@@ -223,6 +223,7 @@ struct smu_funcs
 	int (*send_smc_msg)(struct smu_context *smu, uint16_t msg);
 	int (*send_smc_msg_with_param)(struct smu_context *smu, uint16_t msg, uint32_t param);
 	int (*read_smc_arg)(struct smu_context *smu, uint32_t *arg);
+	int (*init_display)(struct smu_context *smu);
 
 };
 
@@ -276,6 +277,9 @@ struct smu_funcs
 	((smu)->funcs->read_smc_arg? (smu)->funcs->read_smc_arg((smu), (arg)) : 0)
 #define smu_alloc_dpm_context(smu) \
 	((smu)->ppt_funcs->alloc_dpm_context ? (smu)->ppt_funcs->alloc_dpm_context((smu)) : 0)
+#define smu_init_display(smu) \
+	((smu)->funcs->init_display ? (smu)->funcs->init_display((smu)) : 0)
+
 #define smu_store_powerplay_table(smu) \
 	((smu)->ppt_funcs->store_powerplay_table ? (smu)->ppt_funcs->store_powerplay_table((smu)) : 0)
 #define smu_check_powerplay_table(smu) \

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

@@ -658,6 +658,13 @@ static int smu_v11_0_set_tool_table_location(struct smu_context *smu)
 	return ret;
 }
 
+static int smu_v11_0_init_display(struct smu_context *smu)
+{
+	int ret = 0;
+	ret = smu_send_smc_msg_with_param(smu, SMU_MSG_NumOfDisplays, 0);
+	return ret;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
 	.init_microcode = smu_v11_0_init_microcode,
 	.load_microcode = smu_v11_0_load_microcode,
@@ -680,6 +687,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.write_pptable = smu_v11_0_write_pptable,
 	.set_min_dcef_deep_sleep = smu_v11_0_set_min_dcef_deep_sleep,
 	.set_tool_table_location = smu_v11_0_set_tool_table_location,
+	.init_display = smu_v11_0_init_display,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)