drm/amd/pm: Add support for DPM policies

Add support to set/get information about different DPM policies. The
support is only available on SOCs which use swsmu architecture.

A DPM policy type may be defined with different levels. For example, a
policy may be defined to select Pstate preference and then later a
pstate preference may be chosen.

Signed-off-by: Lijo Lazar <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Reviewed-by: Asad Kamal <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index eee919577b44..9c991362b398 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -411,6 +411,36 @@ int amdgpu_dpm_set_xgmi_plpd_mode(struct amdgpu_device *adev, int mode)
 	return ret;
 }
 
+ssize_t amdgpu_dpm_get_pm_policy_info(struct amdgpu_device *adev,
+				      enum pp_pm_policy p_type, char *buf)
+{
+	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = -EOPNOTSUPP;
+
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		ret = smu_get_pm_policy_info(smu, p_type, buf);
+		mutex_unlock(&adev->pm.mutex);
+	}
+
+	return ret;
+}
+
+int amdgpu_dpm_set_pm_policy(struct amdgpu_device *adev, int policy_type,
+			     int policy_level)
+{
+	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = -EOPNOTSUPP;
+
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		ret = smu_set_pm_policy(smu, policy_type, policy_level);
+		mutex_unlock(&adev->pm.mutex);
+	}
+
+	return ret;
+}
+
 int amdgpu_dpm_enable_mgpu_fan_boost(struct amdgpu_device *adev)
 {
 	void *pp_handle = adev->powerplay.pp_handle;