linux-kernel - [PATCH V5 4/6] scsi: ufs: qcom: Align unipro clk attributes as per Hardware specification

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Message-Id: <20230823154413.23788-5-quic_nitirawa@quicinc.com>
Date:   Wed, 23 Aug 2023 21:14:11 +0530
From:   Nitin Rawat <quic_nitirawa@...cinc.com>
To:     mani@...nel.org, agross@...nel.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Cc:     quic_cang@...cinc.com, quic_nguyenb@...cinc.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Nitin Rawat <quic_nitirawa@...cinc.com>,
        Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
Subject: [PATCH V5 4/6] scsi: ufs: qcom: Align unipro clk attributes as per Hardware specification

Currently CORE_CLK_1US_CYCLES, PA_VS_CORE_CLK_40NS_CYCLES are configured
in clk scaling post change ops. Move this to clk scaling pre change ops to
align with the hardware specification.

Co-developed-by: Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
Signed-off-by: Naveen Kumar Goud Arepalli <quic_narepall@...cinc.com>
Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
---
 drivers/ufs/host/ufs-qcom.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 8162b19191a9..491c0173603e 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1399,12 +1399,6 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba,
 }

 static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba)
-{
-	/* nothing to do as of now */
-	return 0;
-}
-
-static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba)
 {
 	struct ufs_qcom_host *host = ufshcd_get_variant(hba);

@@ -1414,6 +1408,11 @@ static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba)
 	return ufs_qcom_cfg_core_clk_ctrl(hba);
 }

+static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba)
+{
+	return 0;
+}
+
 static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba)
 {
 	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
--
2.17.1