[PATCH 015/138] drm/amd/powerplay: add interface to write pptable (v2)

[Huang Rui]

This patch adds interface to write pptable for smu.
It's to copy pptable bo in the vram to smc with SMU MSGs such as
SetDriverDramAddr and TransferTableDram2Smu.

v2: add detailed info to describe this function

Signed-off-by: Huang Rui <ray.huang at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c     | 8 ++++++++
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 5196825..747b6b7 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -192,6 +192,14 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
 	if (ret)
 		return ret;
 
+	/*
+	 * Copy pptable bo in the vram to smc with SMU MSGs such as
+	 * SetDriverDramAddr and TransferTableDram2Smu.
+	 */
+	ret = smu_write_pptable(smu);
+	if (ret)
+		return ret;
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 9525265..e7e9fec 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -45,6 +45,7 @@ struct smu_funcs
 	int (*parse_pptable)(struct smu_context *smu);
 	int (*populate_smc_pptable)(struct smu_context *smu);
 	int (*check_fw_version)(struct smu_context *smu);
+	int (*write_pptable)(struct smu_context *smu);
 };
 
 #define smu_init_microcode(smu) \
@@ -69,6 +70,8 @@ struct smu_funcs
 	((smu)->funcs->populate_smc_pptable ? (smu)->funcs->populate_smc_pptable((smu)) : 0)
 #define smu_check_fw_version(smu) \
 	((smu)->funcs->check_fw_version ? (smu)->funcs->check_fw_version((smu)) : 0)
+#define smu_write_pptable(smu) \
+	((smu)->funcs->write_pptable ? (smu)->funcs->write_pptable((smu)) : 0)
 
 
 extern const struct amd_ip_funcs smu_ip_funcs;
-- 
2.7.4