drm/amd/powerplay: implement smu_notify_display_change function for smu11

add smu_notify_display_change function to send msg to smc to notify
display is changed.
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

@@ -381,6 +381,10 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
 	if (ret)
 		return ret;
 
+	ret = smu_notify_display_change(smu);
+	if (ret)
+		return ret;
+
 	/*
 	 * Set min deep sleep dce fclk with bootup value from vbios via
 	 * SetMinDeepSleepDcefclk MSG.

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

@@ -241,6 +241,7 @@ struct smu_funcs
 	int (*get_enabled_mask)(struct smu_context *smu, uint32_t *feature_mask, uint32_t num);
 	int (*enable_all_mask)(struct smu_context *smu);
 	int (*disable_all_mask)(struct smu_context *smu);
+	int (*notify_display_change)(struct smu_context *smu);
 
 };
 
@@ -304,6 +305,8 @@ struct smu_funcs
 	((smu)->funcs->enable_all_mask? (smu)->funcs->enable_all_mask((smu)) : 0)
 #define smu_feature_disable_all(smu) \
 	((smu)->funcs->disable_all_mask? (smu)->funcs->disable_all_mask((smu)) : 0)
+#define smu_notify_display_change(smu) \
+	((smu)->funcs->notify_display_change? (smu)->funcs->notify_display_change((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

@@ -760,6 +760,16 @@ static int smu_v11_0_disable_all_mask(struct smu_context *smu)
 	return ret;
 }
 
+static int smu_v11_0_notify_display_change(struct smu_context *smu)
+{
+	int ret = 0;
+
+	if (smu_feature_is_enabled(smu, FEATURE_DPM_UCLK_BIT))
+	    ret = smu_send_smc_msg_with_param(smu, SMU_MSG_SetUclkFastSwitch, 1);
+
+	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,
@@ -787,6 +797,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.get_enabled_mask = smu_v11_0_get_enabled_mask,
 	.enable_all_mask = smu_v11_0_enable_all_mask,
 	.disable_all_mask = smu_v11_0_disable_all_mask,
+	.notify_display_change = smu_v11_0_notify_display_change,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)