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| author | Kiwoong Kim <kwmad.kim@samsung.com> | 2016-11-10 21:17:43 +0900 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-12 10:35:42 -0500 |
| commit | ee32c9098f2eff12c0e020aac2acade8250c80e4 (patch) | |
| tree | bcfdea9b2bd968809c423695361fb4ffcb2e6703 | |
| parent | d2877be42f35a8420dc452cf775b5f99b55169aa (diff) | |
| download | op-kernel-dev-ee32c9098f2eff12c0e020aac2acade8250c80e4.zip op-kernel-dev-ee32c9098f2eff12c0e020aac2acade8250c80e4.tar.gz | |
scsi: ufs: introduce hibern8_notify callback
Some UFS host controller may need to configure some things around
hibern8 enter/exit
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 12 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 12 |
2 files changed, 22 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 043e777..576b29c 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_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, PRE_CHANGE); + uic_cmd.command = UIC_CMD_DME_HIBER_ENTER; ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd); @@ -2710,7 +2712,9 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba) */ if (ufshcd_link_recovery(hba)) ret = -ENOLINK; - } + } else + ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, + POST_CHANGE); return ret; } @@ -2733,13 +2737,17 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) struct uic_command uic_cmd = {0}; int ret; + ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT, 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_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT, + POST_CHANGE); return ret; } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 05d8384..8e76501 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 + * @hibern8_notify: 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 +292,8 @@ 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 (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme, + enum ufs_notify_change_status); 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 +825,14 @@ 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_hibern8_notify(struct ufs_hba *hba, + enum uic_cmd_dme cmd, + enum ufs_notify_change_status status) +{ + if (hba->vops && hba->vops->hibern8_notify) + return hba->vops->hibern8_notify(hba, cmd, status); +} + static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op) { if (hba->vops && hba->vops->suspend) |
