[PATCH 4/4] drm/amd/powerplay: add avfs check for old asics on Vi.

[Rex Zhu]

Change-Id: I1737ba27ae2a8f5c579ccb541ced9cb979ffd1ff
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index e7ecbd1..8fe62aa 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -4660,6 +4660,15 @@ static int smu7_set_power_profile_state(struct pp_hwmgr *hwmgr,
 
 static int smu7_avfs_control(struct pp_hwmgr *hwmgr, bool enable)
 {
+	struct pp_smumgr *smumgr = (struct pp_smumgr *)(hwmgr->smumgr);
+	struct smu7_smumgr *smu_data = (struct smu7_smumgr *)(smumgr->backend);
+
+	if (smu_data == NULL)
+		return -EINVAL;
+
+	if (smu_data->avfs.avfs_btc_status == AVFS_BTC_NOTSUPPORTED)
+		return 0;
+
 	if (enable) {
 		if (!PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device,
 				CGS_IND_REG__SMC, FEATURE_STATUS, AVS_ON))
-- 
1.9.1