From: "Alim Akhtar" <alim.akhtar@samsung.com>
To: "'Bao D. Nguyen'" <nguyenb@codeaurora.org>, <cang@codeaurora.org>,
<asutoshd@codeaurora.org>, <martin.petersen@oracle.com>,
<linux-scsi@vger.kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>,
"'Avri Altman'" <avri.altman@wdc.com>,
"'James E.J. Bottomley'" <jejb@linux.ibm.com>,
"'Bean Huo'" <beanhuo@micron.com>,
"'Stanley Chu'" <stanley.chu@mediatek.com>,
"'Bart Van Assche'" <bvanassche@acm.org>,
"'Jaegeuk Kim'" <jaegeuk@kernel.org>,
"'Adrian Hunter'" <adrian.hunter@intel.com>,
"'Keoseong Park'" <keosung.park@samsung.com>,
"'open list'" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH v2 1/2] scsi: ufs: export hibern8 entry and exit
Date: Wed, 29 Sep 2021 08:43:54 +0530 [thread overview]
Message-ID: <00f801d7b4e0$0acfe630$206fb290$@samsung.com> (raw)
In-Reply-To: <a29bfdd0c8f1d1a3e5fb69e43ea277c97a7f0cb6.1632818942.git.nguyenb@codeaurora.org>
Hello,
>-----Original Message-----
>From: nguyenb=codeaurora.org@mg.codeaurora.org
>[mailto:nguyenb=codeaurora.org@mg.codeaurora.org] On Behalf Of Bao D.
>Nguyen
>Sent: Tuesday, September 28, 2021 2:36 PM
>To: cang@codeaurora.org; asutoshd@codeaurora.org;
>martin.petersen@oracle.com; linux-scsi@vger.kernel.org
>Cc: linux-arm-msm@vger.kernel.org; Bao D . Nguyen
><nguyenb@codeaurora.org>; Alim Akhtar <alim.akhtar@samsung.com>; Avri
>Altman <avri.altman@wdc.com>; James E.J. Bottomley <jejb@linux.ibm.com>;
>Bean Huo <beanhuo@micron.com>; Stanley Chu <stanley.chu@mediatek.com>;
>Bart Van Assche <bvanassche@acm.org>; Jaegeuk Kim <jaegeuk@kernel.org>;
>Adrian Hunter <adrian.hunter@intel.com>; Keoseong Park
><keosung.park@samsung.com>; open list <linux-kernel@vger.kernel.org>
>Subject: [PATCH v2 1/2] scsi: ufs: export hibern8 entry and exit
>
>From: Asutosh Das <asutoshd@codeaurora.org>
>
>Qualcomm controllers need to be in hibern8 before scaling up or down the
>clocks. Hence, export the hibern8 entry and exit functions.
>
>Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
>Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
>---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
> drivers/scsi/ufs/ufshcd.c | 4 ++--
> drivers/scsi/ufs/ufshcd.h | 1 +
> 2 files changed, 3 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index
>3841ab49..f3aad32 100644
>--- a/drivers/scsi/ufs/ufshcd.c
>+++ b/drivers/scsi/ufs/ufshcd.c
>@@ -227,7 +227,6 @@ static void ufshcd_hba_exit(struct ufs_hba *hba);
static
>int ufshcd_clear_ua_wluns(struct ufs_hba *hba); static int
>ufshcd_probe_hba(struct ufs_hba *hba, bool async); static int
>ufshcd_setup_clocks(struct ufs_hba *hba, bool on); -static int
>ufshcd_uic_hibern8_enter(struct ufs_hba *hba); static inline void
>ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba); static int
>ufshcd_host_reset_and_restore(struct ufs_hba *hba); static void
>ufshcd_resume_clkscaling(struct ufs_hba *hba); @@ -4116,7 +4115,7 @@ int
>ufshcd_link_recovery(struct ufs_hba *hba) }
>EXPORT_SYMBOL_GPL(ufshcd_link_recovery);
>
>-static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
>+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
> {
> int ret;
> struct uic_command uic_cmd = {0};
>@@ -4138,6 +4137,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba
>*hba)
>
> return ret;
> }
>+EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);
>
> int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) { diff --git
>a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index
52ea6f3..124f50b
>100644
>--- a/drivers/scsi/ufs/ufshcd.h
>+++ b/drivers/scsi/ufs/ufshcd.h
>@@ -1001,6 +1001,7 @@ int ufshcd_init(struct ufs_hba *, void __iomem *,
>unsigned int); int ufshcd_link_recovery(struct ufs_hba *hba); int
>ufshcd_make_hba_operational(struct ufs_hba *hba); void
ufshcd_remove(struct
>ufs_hba *);
>+int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
> int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); void
>ufshcd_delay_us(unsigned long us, unsigned long tolerance); int
>ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
>--
>The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a
>Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-09-29 3:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1632818942.git.nguyenb@codeaurora.org>
2021-09-28 9:06 ` [PATCH v2 1/2] scsi: ufs: export hibern8 entry and exit Bao D. Nguyen
2021-09-28 22:28 ` Bart Van Assche
2021-09-29 3:13 ` Alim Akhtar [this message]
2021-09-28 9:06 ` [PATCH v2 2/2] scsi: ufs-qcom: enter and exit hibern8 during clock scaling Bao D. Nguyen
2021-09-29 3:16 ` Alim Akhtar
2019-10-23 16:39 [PATCH v2 1/2] scsi: ufs: export hibern8 entry and exit Asutosh Das
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