From: <peter.wang@mediatek.com>
To: <stanley.chu@mediatek.com>, <linux-scsi@vger.kernel.org>,
<martin.petersen@oracle.com>, <avri.altman@wdc.com>,
<alim.akhtar@samsung.com>, <jejb@linux.ibm.com>
Cc: <wsd_upstream@mediatek.com>, <linux-mediatek@lists.infradead.org>,
<peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
<alice.chao@mediatek.com>, <cc.chou@mediatek.com>,
<chaotian.jing@mediatek.com>, <jiajie.hao@mediatek.com>,
<powen.kao@mediatek.com>, <jonathan.hsu@mediatek.com>,
<qilin.tan@mediatek.com>, <lin.gui@mediatek.com>,
<mikebi@micron.com>
Subject: [PATCH v1 1/2] scsi: ufs: support vops pre suspend
Date: Tue, 5 Oct 2021 20:45:02 +0800 [thread overview]
Message-ID: <20211005124503.14449-1-peter.wang@mediatek.com> (raw)
From: Peter Wang <peter.wang@mediatek.com>
This patch introduce an solution to do pre suspned before SSU
(sleep) command.
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 9 +++++++--
drivers/scsi/ufs/ufshcd.h | 8 +++++---
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 188de6f91050..73eb626fa88f 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8897,6 +8897,10 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
flush_work(&hba->eeh_work);
+ ret = ufshcd_vops_suspend(hba, pm_op, PRE_CHANGE);
+ if (ret)
+ goto enable_scaling;
+
if (req_dev_pwr_mode != hba->curr_dev_pwr_mode) {
if (pm_op != UFS_RUNTIME_PM)
/* ensure that bkops is disabled */
@@ -8924,7 +8928,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* vendor specific host controller register space call them before the
* host clocks are ON.
*/
- ret = ufshcd_vops_suspend(hba, pm_op);
+ ret = ufshcd_vops_suspend(hba, pm_op, POST_CHANGE);
if (ret)
goto set_link_active;
goto out;
@@ -9052,7 +9056,8 @@ static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
set_old_link_state:
ufshcd_link_state_transition(hba, old_link_state, 0);
vendor_suspend:
- ufshcd_vops_suspend(hba, pm_op);
+ ufshcd_vops_suspend(hba, pm_op, PRE_CHANGE);
+ ufshcd_vops_suspend(hba, pm_op, POST_CHANGE);
out:
if (ret)
ufshcd_update_evt_hist(hba, UFS_EVT_WL_RES_ERR, (u32)ret);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index f0da5d3db1fa..e90320253d96 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -344,7 +344,8 @@ struct ufs_hba_variant_ops {
enum ufs_notify_change_status);
int (*apply_dev_quirks)(struct ufs_hba *hba);
void (*fixup_dev_quirks)(struct ufs_hba *hba);
- int (*suspend)(struct ufs_hba *, enum ufs_pm_op);
+ int (*suspend)(struct ufs_hba *, enum ufs_pm_op,
+ enum ufs_notify_change_status);
int (*resume)(struct ufs_hba *, enum ufs_pm_op);
void (*dbg_register_dump)(struct ufs_hba *hba);
int (*phy_initialization)(struct ufs_hba *);
@@ -1300,10 +1301,11 @@ static inline void ufshcd_vops_fixup_dev_quirks(struct ufs_hba *hba)
hba->vops->fixup_dev_quirks(hba);
}
-static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
+static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op,
+ enum ufs_notify_change_status status)
{
if (hba->vops && hba->vops->suspend)
- return hba->vops->suspend(hba, op);
+ return hba->vops->suspend(hba, op, status);
return 0;
}
--
2.18.0
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next reply other threads:[~2021-10-05 12:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 12:45 peter.wang [this message]
2021-10-05 12:45 ` [PATCH v1 2/2] scsi: ufs: ufs-mediatek: disable auto-hibern8 before suspend peter.wang
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