drm/amd/powerplay: add fw load checking interface

This patch adds fw load checking interface 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

@@ -102,6 +102,12 @@ static int smu_hw_init(void *handle)
 			return ret;
 	}
 
+	ret = smu_check_fw_status(smu);
+	if (ret) {
+		pr_err("SMC firmware status is not correct\n");
+		return ret;
+	}
+
 	mutex_lock(&smu->mutex);
 
 	/* TODO */

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

@@ -36,12 +36,15 @@ 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);
 };
 
 #define smu_init_microcode(smu) \
 	((smu)->funcs->init_microcode ? (smu)->funcs->init_microcode((smu)) : 0)
 #define smu_load_microcode(smu) \
 	((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)
 
 extern const struct amd_ip_funcs smu_ip_funcs;
 

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

@@ -24,6 +24,7 @@
 #include <linux/firmware.h>
 #include "amdgpu.h"
 #include "amdgpu_smu.h"
+#include "smu_v11_0.h"
 
 static int smu_v11_0_init_microcode(struct smu_context *smu)
 {
@@ -37,9 +38,15 @@ static int smu_v11_0_load_microcode(struct smu_context *smu)
 	return 0;
 }
 
+static int smu_v11_0_check_fw_status(struct smu_context *smu)
+{
+	return 0;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
 	.init_microcode = smu_v11_0_init_microcode,
 	.load_microcode = smu_v11_0_load_microcode,
+	.check_fw_status = smu_v11_0_check_fw_status,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)