diff options
| author | subhashj@codeaurora.org <subhashj@codeaurora.org> | 2016-12-23 05:41:22 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-01-06 02:10:04 +0300 |
| commit | 4e768e7645ec4ffa92ee163643777b261ae97142 (patch) | |
| tree | fb038453d666a9a411fa7e4fcbb509e0acccf371 /drivers/scsi/ufs/ufshcd.h | |
| parent | 0c8f75869ed8941fcbf21643fced7bc652f68f14 (diff) | |
| download | linux-4e768e7645ec4ffa92ee163643777b261ae97142.tar.xz | |
scsi: ufs: add capability to keep auto bkops always enabled
UFS device requires to perform bkops (back ground operations) periodically
but host can control (via auto-bkops parameter of device) when device can
perform bkops based on its performance requirements. In general, host
would like to enable the device's auto-bkops only when it's not doing any
regular data transfer but sometimes device may not behave properly if host
keeps the auto-bkops disabled. This change adds the capability to let the
device auto-bkops always enabled except suspend.
Reviewed-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
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 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 787323be0919..f25d4684ef0e 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -566,6 +566,14 @@ struct ufs_hba { * CAUTION: Enabling this might reduce overall UFS throughput. */ #define UFSHCD_CAP_INTR_AGGR (1 << 4) + /* + * This capability allows the device auto-bkops to be always enabled + * except during suspend (both runtime and suspend). + * Enabling this capability means that device will always be allowed + * to do background operation when it's active but it might degrade + * the performance of ongoing read/write operations. + */ +#define UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND (1 << 5) struct devfreq *devfreq; struct ufs_clk_scaling clk_scaling; @@ -663,6 +671,11 @@ static inline void *ufshcd_get_variant(struct ufs_hba *hba) BUG_ON(!hba); return hba->priv; } +static inline bool ufshcd_keep_autobkops_enabled_except_suspend( + struct ufs_hba *hba) +{ + return hba->caps & UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND; +} extern int ufshcd_runtime_suspend(struct ufs_hba *hba); extern int ufshcd_runtime_resume(struct ufs_hba *hba); |