linux-kernel - [PATCH v2 2/3] ufs: host: Add ICE clock scaling during UFS clock changes

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Message-Id: <20251121-enable-ufs-ice-clock-scaling-v2-2-66cb72998041@oss.qualcomm.com>
Date: Fri, 21 Nov 2025 16:06:05 +0530
From: Abhinaba Rakshit <abhinaba.rakshit@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Neeraj Soni <neeraj.soni@....qualcomm.com>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org,
        Abhinaba Rakshit <abhinaba.rakshit@....qualcomm.com>
Subject: [PATCH v2 2/3] ufs: host: Add ICE clock scaling during UFS clock
 changes

Implement ICE (Inline Crypto Engine) clock scaling in sync with
UFS controller clock scaling. This ensures that the ICE operates at
an appropriate frequency when the UFS clocks are scaled up or down,
improving performance and maintaining stability for crypto operations.

Signed-off-by: Abhinaba Rakshit <abhinaba.rakshit@....qualcomm.com>
---
 drivers/ufs/host/ufs-qcom.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 8d119b3223cbdaa3297d2beabced0962a1a847d5..a60b60eb777a674fb4345fd393bde0eab3571a23 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -305,6 +305,14 @@ static int ufs_qcom_ice_prepare_key(struct blk_crypto_profile *profile,
 	return qcom_ice_prepare_key(host->ice, lt_key, lt_key_size, eph_key);
 }
 
+static int ufs_qcom_ice_scale_clk(struct ufs_qcom_host *host, bool scale_up)
+{
+	if (host->hba->caps & UFSHCD_CAP_CRYPTO)
+		return qcom_ice_scale_clk(host->ice, scale_up);
+
+	return 0;
+}
+
 static const struct blk_crypto_ll_ops ufs_qcom_crypto_ops = {
 	.keyslot_program	= ufs_qcom_ice_keyslot_program,
 	.keyslot_evict		= ufs_qcom_ice_keyslot_evict,
@@ -339,6 +347,11 @@ static void ufs_qcom_config_ice_allocator(struct ufs_qcom_host *host)
 {
 }
 
+static int ufs_qcom_ice_scale_clk(struct ufs_qcom_host *host, bool scale_up)
+{
+	return 0;
+}
+
 #endif
 
 static void ufs_qcom_disable_lane_clks(struct ufs_qcom_host *host)
@@ -1646,6 +1659,8 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, bool scale_up,
 		else
 			err = ufs_qcom_clk_scale_down_post_change(hba, target_freq);
 
+		if (!err)
+			err = ufs_qcom_ice_scale_clk(host, scale_up);
 
 		if (err) {
 			ufshcd_uic_hibern8_exit(hba);

-- 
2.34.1