[PATCH 4/5] drm/amd/pm: add Sienna Cichlid gfx ulv control interface

[Evan Quan]

This is needed for UMD pstate switch.

Change-Id: I23d68bc291960118c799366cbb3fc89ccb42f98c
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 .../gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c  | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index 407a11c2826b..3559b33da0c4 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -2718,6 +2718,17 @@ static int sienna_cichlid_enable_mgpu_fan_boost(struct smu_context *smu)
 					       NULL);
 }
 
+static int sienna_cichlid_gfx_ulv_control(struct smu_context *smu,
+					  bool enablement)
+{
+	int ret = 0;
+
+	if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_GFX_ULV_BIT))
+		ret = smu_cmn_feature_set_enabled(smu, SMU_FEATURE_GFX_ULV_BIT, enablement);
+
+	return ret;
+}
+
 static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
 	.get_allowed_feature_mask = sienna_cichlid_get_allowed_feature_mask,
 	.set_default_dpm_table = sienna_cichlid_set_default_dpm_table,
@@ -2796,6 +2807,7 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
 	.set_pp_feature_mask = smu_cmn_set_pp_feature_mask,
 	.get_gpu_metrics = sienna_cichlid_get_gpu_metrics,
 	.enable_mgpu_fan_boost = sienna_cichlid_enable_mgpu_fan_boost,
+	.gfx_ulv_control = sienna_cichlid_gfx_ulv_control,
 };
 
 void sienna_cichlid_set_ppt_funcs(struct smu_context *smu)
-- 
2.28.0