drm/amd/powerplay: optimize i2c bus access implementation

The caller needs not care about the internal details how the powerplay
API implemented.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
index 5e9baca556a4..3465fddff666 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
@@ -1247,3 +1247,18 @@ int amdgpu_dpm_set_clockgating_by_smu(struct amdgpu_device *adev,
 
 	return ret;
 }
+
+int amdgpu_dpm_smu_i2c_bus_access(struct amdgpu_device *adev,
+				  bool acquire)
+{
+	void *pp_handle = adev->powerplay.pp_handle;
+	const struct amd_pm_funcs *pp_funcs =
+			adev->powerplay.pp_funcs;
+	int ret = -EOPNOTSUPP;
+
+	if (pp_funcs && pp_funcs->smu_i2c_bus_access)
+		ret = pp_funcs->smu_i2c_bus_access(pp_handle,
+						   acquire);
+
+	return ret;
+}