diff options
| author | Can Guo <cang@codeaurora.org> | 2020-10-27 20:10:36 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-10-30 02:57:18 +0100 |
| commit | dd7143e27cb7dee8927d3ede59aff588c57bc224 (patch) | |
| tree | b67b86767fa10a47feb17f8622c7afb45ad6c058 /drivers/scsi/ufs/ufshcd.h | |
| parent | scsi: libfc: Fix enum-conversion warning (diff) | |
| download | linux-dd7143e27cb7dee8927d3ede59aff588c57bc224.tar.xz linux-dd7143e27cb7dee8927d3ede59aff588c57bc224.zip | |
scsi: ufs: Put HBA into LPM during clk gating
During clock gating, after clocks are disabled, put HBA into LPM to save
more power.
Link: https://lore.kernel.org/r/52198e70bff750632740d78678a815256d697e43.1603825776.git.asutoshd@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -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 47eb1430274c..0fbb735bb70c 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -592,6 +592,13 @@ enum ufshcd_caps { * inline crypto engine, if it is present */ UFSHCD_CAP_CRYPTO = 1 << 8, + + /* + * This capability allows the controller regulators to be put into + * lpm mode aggressively during clock gating. + * This would increase power savings. + */ + UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9, }; struct ufs_hba_variant_params { @@ -829,6 +836,12 @@ return true; #endif } +static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba) +{ + return !!(ufshcd_is_link_hibern8(hba) && + (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE)); +} + static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba) { return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) && |