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From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<jejb@linux.ibm.com>, <beanhuo@micron.com>
Cc: bvanassche@acm.org, andy.teng@mediatek.com,
	chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
	linux-kernel@vger.kernel.org, cang@codeaurora.org,
	linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
	matthias.bgg@gmail.com, Stanley Chu <stanley.chu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org
Subject: [PATCH v1 2/2] scsi: ufs: introduce common function to disable host TX LCC
Date: Fri, 7 Feb 2020 15:03:57 +0800	[thread overview]
Message-ID: <20200207070357.17169-3-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200207070357.17169-1-stanley.chu@mediatek.com>

Many vendors would like to disable host TX LCC during initialization
flow. Introduce a common function for all users to make drivers easier to
read and maintained. This patch does not change any functionality.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/scsi/ufs/cdns-pltfrm.c  | 2 +-
 drivers/scsi/ufs/ufs-hisi.c     | 2 +-
 drivers/scsi/ufs/ufs-mediatek.c | 2 +-
 drivers/scsi/ufs/ufs-qcom.c     | 4 +---
 drivers/scsi/ufs/ufshcd-pci.c   | 2 +-
 drivers/scsi/ufs/ufshcd.h       | 5 +++++
 6 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c
index 56a6a1ed5ec2..da065a259f6e 100644
--- a/drivers/scsi/ufs/cdns-pltfrm.c
+++ b/drivers/scsi/ufs/cdns-pltfrm.c
@@ -192,7 +192,7 @@ static int cdns_ufs_link_startup_notify(struct ufs_hba *hba,
 	 * and device TX LCC are disabled once link startup is
 	 * completed.
 	 */
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
+	ufshcd_disable_host_tx_lcc(hba);
 
 	/*
 	 * Disabling Autohibern8 feature in cadence UFS
diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/scsi/ufs/ufs-hisi.c
index 5d6487350a6c..074a6a055a4c 100644
--- a/drivers/scsi/ufs/ufs-hisi.c
+++ b/drivers/scsi/ufs/ufs-hisi.c
@@ -235,7 +235,7 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
 	ufshcd_writel(hba, reg, REG_AUTO_HIBERNATE_IDLE_TIMER);
 
 	/* Unipro PA_Local_TX_LCC_Enable */
-	ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x155E, 0x0), 0x0);
+	ufshcd_disable_host_tx_lcc(hba);
 	/* close Unipro VS_Mk2ExtnSupport */
 	ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xD0AB, 0x0), 0x0);
 	ufshcd_dme_get(hba, UIC_ARG_MIB_SEL(0xD0AB, 0x0), &value);
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 8f73c860f423..9d05962feb15 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -318,7 +318,7 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
 	 * to make sure that both host and device TX LCC are disabled
 	 * once link startup is completed.
 	 */
-	ret = ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
+	ret = ufshcd_disable_host_tx_lcc(hba);
 	if (ret)
 		return ret;
 
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index c69c29a1ceb9..c2e703d58f63 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -554,9 +554,7 @@ static int ufs_qcom_link_startup_notify(struct ufs_hba *hba,
 		 * completed.
 		 */
 		if (ufshcd_get_local_unipro_ver(hba) != UFS_UNIPRO_VER_1_41)
-			err = ufshcd_dme_set(hba,
-					UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE),
-					0);
+			err = ufshcd_disable_host_tx_lcc(hba);
 
 		break;
 	case POST_CHANGE:
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index 3b19de3ae9a3..8f78a8151499 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -44,7 +44,7 @@ static int ufs_intel_disable_lcc(struct ufs_hba *hba)
 
 	ufshcd_dme_get(hba, attr, &lcc_enable);
 	if (lcc_enable)
-		ufshcd_dme_set(hba, attr, 0);
+		ufshcd_disable_host_tx_lcc(hba);
 
 	return 0;
 }
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 81c71a3e3474..8f516b205c32 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -914,6 +914,11 @@ static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info)
 		pwr_info->pwr_tx == FASTAUTO_MODE);
 }
 
+static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
+{
+	return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
+}
+
 /* Expose Query-Request API */
 int ufshcd_query_descriptor_retry(struct ufs_hba *hba,
 				  enum query_opcode opcode,
-- 
2.18.0
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  parent reply	other threads:[~2020-02-07  7:04 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-07  7:03 [PATCH v1 0/2] scsi: ufs: introduce common function to disable host TX LCC Stanley Chu
2020-02-07  7:03 ` [PATCH v1 1/2] scsi: ufs: ufs-mediatek: fix TX LCC disabling timing Stanley Chu
2020-02-07 11:51   ` Avri Altman
2020-02-07  7:03 ` Stanley Chu [this message]
2020-02-07 11:10   ` [PATCH v1 2/2] scsi: ufs: introduce common function to disable host TX LCC Can Guo
2020-02-07 11:55   ` Avri Altman
2020-02-07 18:14   ` Asutosh Das (asd)
2020-02-09  7:03   ` Avri Altman
2020-02-13  0:33 ` [PATCH v1 0/2] " Martin K. Petersen

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