[PATCH v1 07/10] ufs: host: mediatek: Optimize power mode change handling

[peter.wang at mediatek.com]

From: Peter Wang <peter.wang at mediatek.com>

This patch optimizes the power mode change process by skipping the
adaptation setting toggle if the requested power mode configuration
is already applied. This enhancement reduces unnecessary operations,
improving efficiency during power mode transitions.

Signed-off-by: Peter Wang <peter.wang at mediatek.com>
---
 drivers/ufs/host/ufs-mediatek.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 517c26362ac6..d9f582e3e72b 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1398,6 +1398,17 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba,
 		}
 	}
 
+	/* if already configured to the requested pwr_mode, skip adapt */
+	if (dev_req_params->gear_rx == hba->pwr_info.gear_rx &&
+	    dev_req_params->gear_tx == hba->pwr_info.gear_tx &&
+	    dev_req_params->lane_rx == hba->pwr_info.lane_rx &&
+	    dev_req_params->lane_tx == hba->pwr_info.lane_tx &&
+	    dev_req_params->pwr_rx == hba->pwr_info.pwr_rx &&
+	    dev_req_params->pwr_tx == hba->pwr_info.pwr_tx &&
+	    dev_req_params->hs_rate == hba->pwr_info.hs_rate) {
+		return ret;
+	}
+
 	if (dev_req_params->pwr_rx == FAST_MODE ||
 	    dev_req_params->pwr_rx == FASTAUTO_MODE) {
 		if (host->hw_ver.major >= 3) {
-- 
2.45.2