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| author |   Stanley Chu <stanley.chu@mediatek.com> | 2020-12-07 13:49:54 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-12-09 11:34:19 -0500 |
| commit | f8162ac70ecf5a3ed638f96dc10e0e19b523ec7f (patch) | |
| tree | 8541ee79bbe501936340e2edcfbe20ee9246942f /drivers/scsi | |
| parent | scsi: ufs: Clear UAC for RPMB after ufshcd resets (diff) | |
| download | linux-dev-f8162ac70ecf5a3ed638f96dc10e0e19b523ec7f.tar.xz linux-dev-f8162ac70ecf5a3ed638f96dc10e0e19b523ec7f.zip | |
scsi: ufs: Allow regulators being always-on
Introduce a flag "always_on" in struct ufs_vreg to allow vendors to keep
the regulator always-on.
Link: https://lore.kernel.org/r/20201207054955.24366-2-stanley.chu@mediatek.com
Reviewed-by: Andy Teng <andy.teng@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufs.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 142c2ebd3d7d..14dfda735adf 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -512,6 +512,7 @@ struct ufs_query_res { struct ufs_vreg { struct regulator *reg; const char *name; + bool always_on; bool enabled; int min_uV; int max_uV; diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a84a8759437a..4f3ac2566322 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8012,7 +8012,7 @@ static int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg) { int ret = 0; - if (!vreg || !vreg->enabled) + if (!vreg || !vreg->enabled || vreg->always_on) goto out; ret = regulator_disable(vreg->reg); |