drm/amd/amdgpu: Add error messages to UVD PG in DPM

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
index 2a11413..bfb6b01 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
@@ -2108,29 +2108,58 @@ static void cz_dpm_powergate_uvd(struct amdgpu_device *adev, bool gate)
                        /* disable clockgating so we can properly shut down the block */
                        ret = amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
                                                            AMD_CG_STATE_UNGATE);
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating failed to set clockgating state\n");
+                               return;
+                       }
+
                        /* shutdown the UVD block */
                        ret = amdgpu_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
                                                            AMD_PG_STATE_GATE);
-                       /* XXX: check for errors */
+
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating failed to set powergating state\n");
+                               return;
+                       }
                }
                cz_update_uvd_dpm(adev, gate);
-               if (pi->caps_uvd_pg)
+               if (pi->caps_uvd_pg) {
                        /* power off the UVD block */
-                       cz_send_msg_to_smc(adev, PPSMC_MSG_UVDPowerOFF);
+                       ret = cz_send_msg_to_smc(adev, PPSMC_MSG_UVDPowerOFF);
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating failed to send SMU PowerOFF message\n");
+                               return;
+                       }
+               }
        } else {
                if (pi->caps_uvd_pg) {
                        /* power on the UVD block */
                        if (pi->uvd_dynamic_pg)
-                               cz_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_UVDPowerON, 1);
+                               ret = cz_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_UVDPowerON, 1);
                        else
-                               cz_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_UVDPowerON, 0);
+                               ret = cz_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_UVDPowerON, 0);
+
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating Failed to send SMU PowerON message\n");
+                               return;
+                       }
+
                        /* re-init the UVD block */
                        ret = amdgpu_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
                                                            AMD_PG_STATE_UNGATE);
+
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating Failed to set powergating state\n");
+                               return;
+                       }
+
                        /* enable clockgating. hw will dynamically gate/ungate clocks on the fly */
                        ret = amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
                                                            AMD_CG_STATE_GATE);
-                       /* XXX: check for errors */
+                       if (ret) {
+                               DRM_ERROR("UVD DPM Power Gating Failed to set clockgating state\n");
+                               return;
+                       }
                }
                cz_update_uvd_dpm(adev, gate);
        }