diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-10-27 16:06:14 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-11-30 06:37:04 +0300 |
| commit | ddba1cf7a506b09b3583bcac2d64ec88bd4e3a96 (patch) | |
| tree | 8f64fa994690f7ced58bdeb48f63167013569204 /drivers/scsi/ufs/ufshcd.h | |
| parent | 659109a45c6c5a3c81a8ce35dea59318c44cfa6e (diff) | |
| download | linux-ddba1cf7a506b09b3583bcac2d64ec88bd4e3a96.tar.xz | |
scsi: ufs: Let devices remain runtime suspended during system suspend
If the UFS Device WLUN is runtime suspended and is in the same power mode,
link state, and b_rpm_dev_flush_capable (BKOP or WB buffer flush etc)
state, then it can remain runtime suspended instead of being runtime
resumed and then system suspended.
The following patch has cleared the way for that to happen:
scsi: core: pm: Only runtime resume if necessary
So amend the logic accordingly.
Note, the ufs-hisi driver uses different RPM and SPM, but it is made
explicit by a new parameter to suspend prepare.
Link: https://lore.kernel.org/r/20211027130614.406985-2-adrian.hunter@intel.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 54750d72c8fb..6103e98e9a08 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -1211,6 +1211,7 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba, int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); int ufshcd_suspend_prepare(struct device *dev); +int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm); void ufshcd_resume_complete(struct device *dev); /* Wrapper functions for safely calling variant operations */ @@ -1420,6 +1421,16 @@ static inline int ufshcd_rpm_put_sync(struct ufs_hba *hba) return pm_runtime_put_sync(&hba->sdev_ufs_device->sdev_gendev); } +static inline void ufshcd_rpm_get_noresume(struct ufs_hba *hba) +{ + pm_runtime_get_noresume(&hba->sdev_ufs_device->sdev_gendev); +} + +static inline int ufshcd_rpm_resume(struct ufs_hba *hba) +{ + return pm_runtime_resume(&hba->sdev_ufs_device->sdev_gendev); +} + static inline int ufshcd_rpm_put(struct ufs_hba *hba) { return pm_runtime_put(&hba->sdev_ufs_device->sdev_gendev); |