[PATCH] drm/amd/powerplay: add helper function to get smu firmware & if version

[Wang, Kevin(Yang)]

add this helper function to get smc version.

Change-Id: I6b06470cefd10fafcf06df8a5e8cb03bf79622c0
Signed-off-by: Kevin Wang <kevin1.wang at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c    | 30 +++++++++++++++++++
 .../gpu/drm/amd/powerplay/inc/amdgpu_smu.h    |  1 +
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c     | 23 +++++++++-----
 3 files changed, 46 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 25d2ba2b9018..c021c05727e8 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -29,6 +29,36 @@
 #include "smu_v11_0.h"
 #include "atom.h"
 
+int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t *smu_version)
+{
+	int ret = 0;
+
+	if (!if_version && !smu_version)
+		return -EINVAL;
+
+	if (if_version) {
+		ret = smu_send_smc_msg(smu, SMU_MSG_GetDriverIfVersion);
+		if (ret)
+			return ret;
+
+		ret = smu_read_smc_arg(smu, if_version);
+		if (ret)
+			return ret;
+	}
+
+	if (smu_version) {
+		ret = smu_send_smc_msg(smu, SMU_MSG_GetSmuVersion);
+		if (ret)
+			return ret;
+
+		ret = smu_read_smc_arg(smu, smu_version);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
 int smu_set_soft_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
 			    uint32_t min, uint32_t max)
 {
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index e958d4cb5baf..435727c8ee21 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -931,4 +931,5 @@ int smu_set_soft_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
 			    uint32_t min, uint32_t max);
 int smu_set_hard_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
 			    uint32_t min, uint32_t max);
+int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t *smu_version);
 #endif
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index ab89c79b4358..c2fe00f51b2b 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -249,20 +249,27 @@ static int smu_v11_0_check_fw_status(struct smu_context *smu)
 
 static int smu_v11_0_check_fw_version(struct smu_context *smu)
 {
-	uint32_t smu_version = 0xff;
+	uint32_t if_version = 0xff, smu_version = 0xff;
+	uint16_t smu_major;
+	uint8_t smu_minor, smu_debug;
 	int ret = 0;
 
-	ret = smu_send_smc_msg(smu, SMU_MSG_GetDriverIfVersion);
+	ret = smu_get_smc_version(smu, &if_version, &smu_version);
 	if (ret)
-		goto err;
+		return ret;
 
-	ret = smu_read_smc_arg(smu, &smu_version);
-	if (ret)
-		goto err;
+	smu_major = (smu_version >> 16) & 0xffff;
+	smu_minor = (smu_version >> 8) & 0xff;
+	smu_debug = (smu_version >> 0) & 0xff;
+
+	pr_info("SMU Driver IF Version = 0x%08x, SMU FW Version = 0x%08x (%d.%d.%d)\n",
+		if_version, smu_version, smu_major, smu_minor, smu_debug);
 
-	if (smu_version != smu->smc_if_version)
+	if (if_version != smu->smc_if_version) {
+		pr_err("SMU driver if version not matched\n");
 		ret = -EINVAL;
-err:
+	}
+
 	return ret;
 }
 
-- 
2.21.0