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: <asutoshd@codeaurora.org>, <cang@codeaurora.org>,
<matthias.bgg@gmail.com>, <bvanassche@acm.org>,
<linux-mediatek@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kuohong.wang@mediatek.com>,
<peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
<andy.teng@mediatek.com>, Stanley Chu <stanley.chu@mediatek.com>
Subject: [PATCH RESEND v3 1/4] scsi: ufs-mediatek: ensure UniPro is not powered down before linkup
Date: Wed, 29 Jan 2020 18:52:48 +0800 [thread overview]
Message-ID: <20200129105251.12466-2-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200129105251.12466-1-stanley.chu@mediatek.com>
MediaTek Chipsets can enter proprietary UniPro low-power mode during
suspend while link is in hibern8 state. Make sure leaving low-power
mode before every link startup to prevent lockup in any possible error recovery
path.
In the same time, re-factor related funcitons to improve code readability.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 53eae5fe2ade..7ac838cc15d1 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -30,6 +30,11 @@
#define ufs_mtk_device_reset_ctrl(high, res) \
ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
+#define ufs_mtk_unipro_powerdown(hba, powerdown) \
+ ufshcd_dme_set(hba, \
+ UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), \
+ powerdown)
+
static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable)
{
u32 tmp;
@@ -290,6 +295,8 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
int ret;
u32 tmp;
+ ufs_mtk_unipro_powerdown(hba, 0);
+
/* disable deep stall */
ret = ufshcd_dme_get(hba, UIC_ARG_MIB(VS_SAVEPOWERCONTROL), &tmp);
if (ret)
@@ -390,9 +397,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)
if (err)
return err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ err = ufs_mtk_unipro_powerdown(hba, 0);
if (err)
return err;
@@ -413,14 +418,10 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba)
{
int err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 1);
+ err = ufs_mtk_unipro_powerdown(hba, 1);
if (err) {
/* Resume UniPro state for following error recovery */
- ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ ufs_mtk_unipro_powerdown(hba, 0);
return err;
}
--
2.18.0
WARNING: multiple messages have this Message-ID (diff)
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 RESEND v3 1/4] scsi: ufs-mediatek: ensure UniPro is not powered down before linkup
Date: Wed, 29 Jan 2020 18:52:48 +0800 [thread overview]
Message-ID: <20200129105251.12466-2-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200129105251.12466-1-stanley.chu@mediatek.com>
MediaTek Chipsets can enter proprietary UniPro low-power mode during
suspend while link is in hibern8 state. Make sure leaving low-power
mode before every link startup to prevent lockup in any possible error recovery
path.
In the same time, re-factor related funcitons to improve code readability.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 53eae5fe2ade..7ac838cc15d1 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -30,6 +30,11 @@
#define ufs_mtk_device_reset_ctrl(high, res) \
ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
+#define ufs_mtk_unipro_powerdown(hba, powerdown) \
+ ufshcd_dme_set(hba, \
+ UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), \
+ powerdown)
+
static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable)
{
u32 tmp;
@@ -290,6 +295,8 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
int ret;
u32 tmp;
+ ufs_mtk_unipro_powerdown(hba, 0);
+
/* disable deep stall */
ret = ufshcd_dme_get(hba, UIC_ARG_MIB(VS_SAVEPOWERCONTROL), &tmp);
if (ret)
@@ -390,9 +397,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)
if (err)
return err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ err = ufs_mtk_unipro_powerdown(hba, 0);
if (err)
return err;
@@ -413,14 +418,10 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba)
{
int err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 1);
+ err = ufs_mtk_unipro_powerdown(hba, 1);
if (err) {
/* Resume UniPro state for following error recovery */
- ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ ufs_mtk_unipro_powerdown(hba, 0);
return err;
}
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
WARNING: multiple messages have this Message-ID (diff)
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 RESEND v3 1/4] scsi: ufs-mediatek: ensure UniPro is not powered down before linkup
Date: Wed, 29 Jan 2020 18:52:48 +0800 [thread overview]
Message-ID: <20200129105251.12466-2-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200129105251.12466-1-stanley.chu@mediatek.com>
MediaTek Chipsets can enter proprietary UniPro low-power mode during
suspend while link is in hibern8 state. Make sure leaving low-power
mode before every link startup to prevent lockup in any possible error recovery
path.
In the same time, re-factor related funcitons to improve code readability.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 53eae5fe2ade..7ac838cc15d1 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -30,6 +30,11 @@
#define ufs_mtk_device_reset_ctrl(high, res) \
ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
+#define ufs_mtk_unipro_powerdown(hba, powerdown) \
+ ufshcd_dme_set(hba, \
+ UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), \
+ powerdown)
+
static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable)
{
u32 tmp;
@@ -290,6 +295,8 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
int ret;
u32 tmp;
+ ufs_mtk_unipro_powerdown(hba, 0);
+
/* disable deep stall */
ret = ufshcd_dme_get(hba, UIC_ARG_MIB(VS_SAVEPOWERCONTROL), &tmp);
if (ret)
@@ -390,9 +397,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)
if (err)
return err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ err = ufs_mtk_unipro_powerdown(hba, 0);
if (err)
return err;
@@ -413,14 +418,10 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba)
{
int err;
- err = ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 1);
+ err = ufs_mtk_unipro_powerdown(hba, 1);
if (err) {
/* Resume UniPro state for following error recovery */
- ufshcd_dme_set(hba,
- UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
- 0);
+ ufs_mtk_unipro_powerdown(hba, 0);
return err;
}
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-01-29 10:53 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-29 10:52 [PATCH RESEND v3 0/4] MediaTek UFS vendor implemenation part III and Auto-Hibern8 fix Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 10:52 ` Stanley Chu [this message]
2020-01-29 10:52 ` [PATCH RESEND v3 1/4] scsi: ufs-mediatek: ensure UniPro is not powered down before linkup Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-30 17:45 ` [EXT] " Bean Huo (beanhuo)
2020-01-30 17:45 ` Bean Huo (beanhuo)
2020-01-30 17:45 ` Bean Huo (beanhuo)
2020-01-29 10:52 ` [PATCH RESEND v3 2/4] scsi: ufs-mediatek: support linkoff state during suspend Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-30 17:46 ` [EXT] " Bean Huo (beanhuo)
2020-01-30 17:46 ` Bean Huo (beanhuo)
2020-01-30 17:46 ` Bean Huo (beanhuo)
2020-01-29 10:52 ` [PATCH RESEND v3 3/4] scsi: ufs: fix Auto-Hibern8 error detection Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 18:18 ` Asutosh Das (asd)
2020-01-29 18:18 ` Asutosh Das (asd)
2020-01-29 18:18 ` Asutosh Das (asd)
2020-02-05 2:26 ` Can Guo
2020-02-05 2:26 ` Can Guo
2020-02-05 2:26 ` Can Guo
2020-01-29 10:52 ` [PATCH RESEND v3 4/4] scsi: ufs-mediatek: gate ref-clk during Auto-Hibern8 Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-29 10:52 ` Stanley Chu
2020-01-30 17:46 ` [EXT] " Bean Huo (beanhuo)
2020-01-30 17:46 ` Bean Huo (beanhuo)
2020-01-30 17:46 ` Bean Huo (beanhuo)
2020-01-31 18:48 ` Avri Altman
2020-01-31 18:48 ` Avri Altman
2020-01-31 18:48 ` Avri Altman
2020-02-01 1:45 ` Stanley Chu
2020-02-01 1:45 ` Stanley Chu
2020-02-01 1:45 ` Stanley Chu
2020-02-02 14:38 ` [PATCH RESEND v3 0/4] MediaTek UFS vendor implemenation part III and Auto-Hibern8 fix Alim Akhtar
2020-02-02 14:38 ` Alim Akhtar
2020-02-02 14:38 ` Alim Akhtar
2020-02-05 2:10 ` Martin K. Petersen
2020-02-05 2:10 ` Martin K. Petersen
2020-02-05 2:10 ` Martin K. Petersen
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