drm/amd/powerplay: add interface to read pptable from vbios

This patch adds interface to read pptable from vbios for smu.
Signed-off-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

@@ -87,6 +87,17 @@ static int smu_sw_fini(void *handle)
 	return 0;
 }
 
+static int smu_smc_table_hw_init(struct smu_context *smu)
+{
+	int ret;
+
+	ret = smu_read_pptable_from_vbios(smu);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 static int smu_hw_init(void *handle)
 {
 	int ret;
@@ -110,13 +121,19 @@ static int smu_hw_init(void *handle)
 
 	mutex_lock(&smu->mutex);
 
-	/* TODO */
+	ret = smu_smc_table_hw_init(smu);
+	if (ret)
+		goto failed;
 
 	mutex_unlock(&smu->mutex);
 
 	pr_info("SMU is initialized successfully!\n");
 
 	return 0;
+
+failed:
+	mutex_unlock(&smu->mutex);
+	return ret;
 }
 
 static int smu_hw_fini(void *handle)

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

@@ -37,6 +37,7 @@ struct smu_funcs
 	int (*init_microcode)(struct smu_context *smu);
 	int (*load_microcode)(struct smu_context *smu);
 	int (*check_fw_status)(struct smu_context *smu);
+	int (*read_pptable_from_vbios)(struct smu_context *smu);
 };
 
 #define smu_init_microcode(smu) \
@@ -45,6 +46,8 @@ struct smu_funcs
 	((smu)->funcs->load_microcode ? (smu)->funcs->load_microcode((smu)) : 0)
 #define smu_check_fw_status(smu) \
 	((smu)->funcs->check_fw_status ? (smu)->funcs->check_fw_status((smu)) : 0)
+#define smu_read_pptable_from_vbios(smu) \
+	((smu)->funcs->read_pptable_from_vbios ? (smu)->funcs->read_pptable_from_vbios((smu)) : 0)
 
 extern const struct amd_ip_funcs smu_ip_funcs;