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Wed, 18 Dec 2019 23:53:40 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id DEAF6C447A6; Wed, 18 Dec 2019 23:53:39 +0000 (UTC) Received: from [10.46.161.159] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: asutoshd) by smtp.codeaurora.org (Postfix) with ESMTPSA id 090F0C433A2; Wed, 18 Dec 2019 23:53:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 090F0C433A2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=asutoshd@codeaurora.org Subject: Re: [PATCH v1 2/4] scsi: ufs: export ufshcd_auto_hibern8_update for vendor usage To: Stanley Chu , linux-scsi@vger.kernel.org, martin.petersen@oracle.com, avri.altman@wdc.com, alim.akhtar@samsung.com, pedrom.sousa@synopsys.com, jejb@linux.ibm.com, matthias.bgg@gmail.com References: <1576224695-22657-1-git-send-email-stanley.chu@mediatek.com> <1576224695-22657-3-git-send-email-stanley.chu@mediatek.com> From: "Asutosh Das (asd)" Message-ID: Date: Wed, 18 Dec 2019 15:53:37 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: <1576224695-22657-3-git-send-email-stanley.chu@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191218_155343_973152_F8F12CDB X-CRM114-Status: GOOD ( 20.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 12/13/2019 12:11 AM, Stanley Chu wrote: > Export ufshcd_auto_hibern8_update to allow vendors to use common > interface to customize auto-hibernate timer. > > Signed-off-by: Stanley Chu > --- > drivers/scsi/ufs/ufs-sysfs.c | 20 -------------------- > drivers/scsi/ufs/ufshcd.c | 18 ++++++++++++++++++ > drivers/scsi/ufs/ufshcd.h | 1 + > 3 files changed, 19 insertions(+), 20 deletions(-) > > diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c > index ad2abc96c0f1..720be3f64be7 100644 > --- a/drivers/scsi/ufs/ufs-sysfs.c > +++ b/drivers/scsi/ufs/ufs-sysfs.c > @@ -118,26 +118,6 @@ static ssize_t spm_target_link_state_show(struct device *dev, > ufs_pm_lvl_states[hba->spm_lvl].link_state)); > } > > -static void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit) > -{ > - unsigned long flags; > - > - if (!ufshcd_is_auto_hibern8_supported(hba)) > - return; > - > - spin_lock_irqsave(hba->host->host_lock, flags); > - if (hba->ahit != ahit) > - hba->ahit = ahit; > - spin_unlock_irqrestore(hba->host->host_lock, flags); > - if (!pm_runtime_suspended(hba->dev)) { > - pm_runtime_get_sync(hba->dev); > - ufshcd_hold(hba, false); > - ufshcd_auto_hibern8_enable(hba); > - ufshcd_release(hba); > - pm_runtime_put(hba->dev); > - } > -} > - > /* Convert Auto-Hibernate Idle Timer register value to microseconds */ > static int ufshcd_ahit_to_us(u32 ahit) > { > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index b5966faf3e98..589f519316aa 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -3956,6 +3956,24 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) > return ret; > } > > +void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit) > +{ > + unsigned long flags; > + > + if (!(hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT)) > + return; > + > + spin_lock_irqsave(hba->host->host_lock, flags); > + if (hba->ahit == ahit) > + goto out_unlock; > + hba->ahit = ahit; > + if (!pm_runtime_suspended(hba->dev)) > + ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER); > +out_unlock: > + spin_unlock_irqrestore(hba->host->host_lock, flags); > +} > +EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update); > + > void ufshcd_auto_hibern8_enable(struct ufs_hba *hba) > { > unsigned long flags; > diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h > index 2740f6941ec6..86586a0b9aa5 100644 > --- a/drivers/scsi/ufs/ufshcd.h > +++ b/drivers/scsi/ufs/ufshcd.h > @@ -927,6 +927,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, > enum flag_idn idn, bool *flag_res); > > void ufshcd_auto_hibern8_enable(struct ufs_hba *hba); > +void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit); > > #define SD_ASCII_STD true > #define SD_RAW false > Looks good to me. Reviewed-by: Asutosh Das -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, Linux Foundation Collaborative Project _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel