> > Some UFS host controller may need to configure some things around
> > hibern8 enter/exit
> >
> > Signed-off-by: Kiwoong Kim <kwmad....@samsung.com>
> > ---
> > drivers/scsi/ufs/ufshcd.c | 10 ++++++++-- drivers/scsi/ufs/ufshcd.h
> > | 10 ++++++++++
> > 2 files changed, 18 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> > index fdb0502..d4a5a9c 100644
> > --- a/drivers/scsi/ufs/ufshcd.c
> > +++ b/drivers/scsi/ufs/ufshcd.c
> > @@ -2697,6 +2697,8 @@ static int __ufshcd_uic_hibern8_enter(struct
> > ufs_hba *hba)
> > int ret;
> > struct uic_command uic_cmd = {0};
> >
> > + ufshcd_vops_setup_hibern8(hba, true, PRE_CHANGE);
> > +
> > uic_cmd.command = UIC_CMD_DME_HIBER_ENTER;
> > ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
> >
> > @@ -2710,7 +2712,8 @@ static int __ufshcd_uic_hibern8_enter(struct
> > ufs_hba *hba)
> > */
> > if (ufshcd_link_recovery(hba))
> > ret = -ENOLINK;
> > - }
> > + } else
> > + ufshcd_vops_setup_hibern8(hba, true, POST_CHANGE);
> >
> > return ret;
> > }
> > @@ -2733,13 +2736,16 @@ static int ufshcd_uic_hibern8_exit(struct
> > ufs_hba *hba)
> > struct uic_command uic_cmd = {0};
> > int ret;
> >
> > + ufshcd_vops_setup_hibern8(hba, false, PRE_CHANGE);
> > +
> > uic_cmd.command = UIC_CMD_DME_HIBER_EXIT;
> > ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
> > if (ret) {
> > dev_err(hba->dev, "%s: hibern8 exit failed. ret = %d\n",
> > __func__, ret);
> > ret = ufshcd_link_recovery(hba);
> > - }
> > + } else
> > + ufshcd_vops_setup_hibern8(hba, false, POST_CHANGE);
> >
> > return ret;
> > }
> > diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> > index b084d89..13504b4 100644
> > --- a/drivers/scsi/ufs/ufshcd.h
> > +++ b/drivers/scsi/ufs/ufshcd.h
> > @@ -265,6 +265,8 @@ struct ufs_pwr_mode_info {
> > * to set some things
> > * @setup_task_mgmt: called before any task management request is
> > issued
> > * to set some things
> > + * @setup_hibern8: called around hibern8 enter/exit
> > + * to configure some things
> > * @suspend: called during host controller PM callback
> > * @resume: called during host controller PM callback
> > * @dbg_register_dump: used to dump controller debug information @@
> > -290,6 +292,7 @@ struct ufs_hba_variant_ops {
> > struct ufs_pa_layer_attr *);
> > void (*setup_xfer_req)(struct ufs_hba *, int, bool);
> > void (*setup_task_mgmt)(struct ufs_hba *, int, u8);
> > + void (*setup_hibern8)(struct ufs_hba *, bool, bool);
>
> Can we change the name to "hibern8_notify" ? You may check other
> ufs_hba_variant_ops for reference.
Okay, I'll apply what you said.
>
> > int (*suspend)(struct ufs_hba *, enum ufs_pm_op);
> > int (*resume)(struct ufs_hba *, enum ufs_pm_op);
> > void (*dbg_register_dump)(struct ufs_hba *hba);
> > @@ -821,6 +824,13 @@ static inline void
> > ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
> > return hba->vops->setup_task_mgmt(hba, tag, tm_function); }
> >
> > +static inline void ufshcd_vops_setup_hibern8(struct ufs_hba *hba,
> > + bool enter, bool notify)
>
> Using bool to specify whether it is hibern8 enter or hibern8 exit doesn't
> seem to be readable. May be you can pass the UIC_CMD_DME_HIBER_ENTER or
> UIC_CMD_DME_HIBER_EXIT (in other words use "enum uic_cmd_dme" type).
>
> also "notify" type should be changed from "bool" to "enum
> ufs_notify_change_status".
Okay, I'll apply what you said and use "enum uic_cmd_dme"
as 2nd argument date type.
>
> > +{
> > + if (hba->vops && hba->vops->setup_hibern8)
> > + return hba->vops->setup_hibern8(hba, enter, notify); }
> > +
> > static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum
> > ufs_pm_op op) {
> > if (hba->vops && hba->vops->suspend)
>
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