diff options
| author | Bean Huo <beanhuo@micron.com> | 2021-01-19 17:38:42 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-20 22:08:33 -0500 |
| commit | 8e834ca551add86fd549b0830f36ec2f26d08667 (patch) | |
| tree | de51669962a2ff23a6d84761d23eaab7e274d0c4 /drivers/scsi/ufs/ufshcd.c | |
| parent | f1ef9047aaab036edb39261b0a7a6bdcf3010b87 (diff) | |
scsi: ufs: Add "wb_on" sysfs node to control WB on/off
Currently UFS WriteBooster driver uses clock scaling up/down to set WB
on/off. For the platforms which don't support UFSHCD_CAP_CLK_SCALING, WB
will be always on. Provide a sysfs attribute to enable/disable WB during
runtime. Write 1/0 to "wb_on" sysfs node to enable/disable UFS WB.
Link: https://lore.kernel.org/r/20210119163847.20165-2-huobean@gmail.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a4631caabf30..f3e0a8734ed9 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -249,7 +249,6 @@ static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba, static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag); static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba); static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba); -static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable); static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set); static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable); static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba); @@ -5416,7 +5415,7 @@ out: __func__, err); } -static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable) +int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable) { int ret; u8 index; |