From: Bean Huo <huobean@gmail.com>
To: alim.akhtar@samsung.com, avri.altman@wdc.com,
asutoshd@codeaurora.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, stanley.chu@mediatek.com,
beanhuo@micron.com, bvanassche@acm.org, tomas.winkler@intel.com,
cang@codeaurora.org
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] scsi: ufs: Keep device power on only fWriteBoosterBufferFlushDuringHibernate == 1
Date: Mon, 30 Nov 2020 19:11:42 +0100 [thread overview]
Message-ID: <20201130181143.5739-3-huobean@gmail.com> (raw)
In-Reply-To: <20201130181143.5739-1-huobean@gmail.com>
From: Bean Huo <beanhuo@micron.com>
Keep device power mode as active power mode and VCC supply only if
fWriteBoosterBufferFlushDuringHibernate setting 1 is successful.
Signed-off-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufs.h | 2 ++
drivers/scsi/ufs/ufshcd.c | 11 ++++++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index d593edb48767..311d5f7a024d 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -530,6 +530,8 @@ struct ufs_dev_info {
bool f_power_on_wp_en;
/* Keeps information if any of the LU is power on write protected */
bool is_lu_power_on_wp;
+ /* Indicates if flush WB buffer during hibern8 successfully enabled */
+ bool is_hibern8_wb_flush;
/* Maximum number of general LU supported by the UFS device */
u8 max_lu_supported;
u8 wb_dedicated_lu;
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 639ba9d1ccbb..eb7a2534b072 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -285,10 +285,16 @@ static inline void ufshcd_wb_config(struct ufs_hba *hba)
dev_err(hba->dev, "%s: Enable WB failed: %d\n", __func__, ret);
else
dev_info(hba->dev, "%s: Write Booster Configured\n", __func__);
+
ret = ufshcd_wb_toggle_flush_during_h8(hba, true);
- if (ret)
+ if (ret) {
dev_err(hba->dev, "%s: En WB flush during H8: failed: %d\n",
__func__, ret);
+ hba->dev_info.is_hibern8_wb_flush = false;
+ } else {
+ hba->dev_info.is_hibern8_wb_flush = true;
+ }
+
ufshcd_wb_toggle_flush(hba, true);
}
@@ -5440,6 +5446,9 @@ static bool ufshcd_wb_need_flush(struct ufs_hba *hba)
if (!ufshcd_is_wb_allowed(hba))
return false;
+
+ if (!hba->dev_info.is_hibern8_wb_flush)
+ return false;
/*
* The ufs device needs the vcc to be ON to flush.
* With user-space reduction enabled, it's enough to enable flush
--
2.17.1
next prev parent reply other threads:[~2020-11-30 18:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-30 18:11 [PATCH 0/3] Three changes for UFS WriteBooster Bean Huo
2020-11-30 18:11 ` [PATCH 1/3] scsi: ufs: Add "wb_on" sysfs node to control WB on/off Bean Huo
2020-11-30 23:19 ` Asutosh Das (asd)
2020-12-02 16:20 ` Bean Huo
2020-12-02 17:58 ` Asutosh Das (asd)
2020-11-30 18:11 ` Bean Huo [this message]
[not found] ` <BY5PR04MB6599826730BD3FB0E547E60587F30@BY5PR04MB6599.namprd04.prod.outlook.com>
2020-12-03 7:27 ` [PATCH 2/3] scsi: ufs: Keep device power on only fWriteBoosterBufferFlushDuringHibernate == 1 Avri Altman
2020-12-03 9:36 ` Bean Huo
2020-12-03 9:40 ` Bean Huo
2020-12-03 10:46 ` Avri Altman
2020-12-03 11:45 ` Bean Huo
2020-12-03 12:15 ` Avri Altman
2020-12-03 12:31 ` Bean Huo
2020-12-04 3:26 ` Can Guo
2020-12-04 8:28 ` Bean Huo
2020-11-30 18:11 ` [PATCH 3/3] scsi: ufs: Changes comment in the function ufshcd_wb_probe() Bean Huo
2020-12-04 3:27 ` Can Guo
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