[PATCH] drm/powerplay : send SMC message to set XGMI pstate

[Liu, Shaoyun]

Send message with parameter to SMC to set xgmi pstate

Change-Id: I5d90cffd63690f31f0df62c206b263d300f14234
Signed-off-by: shaoyunl <shaoyun.liu at amd.com>
---
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index c478b38..92903a4 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1896,8 +1896,13 @@ static int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,
 static int smu_v11_0_set_xgmi_pstate(struct smu_context *smu,
 				     uint32_t pstate)
 {
-	/* send msg to SMU to set pstate */
-	return 0;
+	int ret = 0;
+	mutex_lock(&(smu->mutex));
+	ret = smu_send_smc_msg_with_param(smu,
+					  SMU_MSG_SetXgmiMode,
+					  pstate ? XGMI_STATE_D0 : XGMI_STATE_D3);
+	mutex_unlock(&(smu->mutex));
+	return ret;
 }
 
 static const struct smu_funcs smu_v11_0_funcs = {
-- 
2.7.4