drm/amd/powerplay: initialize uvd/vce powergate status v4

On UVD/VCE dpm enabled/disabled, the powergate status will be
set as false/true. So that we will not try to ungate/gate them(
enable/disable their dpm) again.

v2: added check for uvd/vce powergate status before gating
v3: fix typo in description
v4: warning fix (Alex)

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

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
index 45c8f2d..8176b23 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
@@ -777,6 +777,21 @@ static int vega12_set_allowed_featuresmask(struct pp_hwmgr *hwmgr)
        return 0;
 }
 
+static void vega12_init_powergate_state(struct pp_hwmgr *hwmgr)
+{
+       struct vega12_hwmgr *data =
+                       (struct vega12_hwmgr *)(hwmgr->backend);
+
+       data->uvd_power_gated = true;
+       data->vce_power_gated = true;
+
+       if (data->smu_features[GNLD_DPM_UVD].enabled)
+               data->uvd_power_gated = false;
+
+       if (data->smu_features[GNLD_DPM_VCE].enabled)
+               data->vce_power_gated = false;
+}
+
 static int vega12_enable_all_smu_features(struct pp_hwmgr *hwmgr)
 {
        struct vega12_hwmgr *data =
@@ -801,6 +816,8 @@ static int vega12_enable_all_smu_features(struct pp_hwmgr *hwmgr)
                }
        }
 
+       vega12_init_powergate_state(hwmgr);
+
        return 0;
 }
 
@@ -1985,6 +2002,9 @@ static void vega12_power_gate_vce(struct pp_hwmgr *hwmgr, bool bgate)
 {
        struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 
+       if (data->vce_power_gated == bgate)
+               return;
+
        data->vce_power_gated = bgate;
        vega12_enable_disable_vce_dpm(hwmgr, !bgate);
 }
@@ -1993,6 +2013,9 @@ static void vega12_power_gate_uvd(struct pp_hwmgr *hwmgr, bool bgate)
 {
        struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 
+       if (data->uvd_power_gated == bgate)
+               return;
+
        data->uvd_power_gated = bgate;
        vega12_enable_disable_uvd_dpm(hwmgr, !bgate);
 }