diff options
author | Stanley Chu <stanley.chu@mediatek.com> | 2019-09-16 23:56:50 +0800 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-09-30 23:01:17 -0400 |
commit | 49615ba144a0929c725d08f0d3ba8494c8b77404 (patch) | |
tree | d25d1b12cb4d071cd5c5deba3ce8a7a9411b093d /drivers/scsi/ufs/ufshcd.c | |
parent | c74f8056621738f5be9f5d3d7e0caa927b21aef6 (diff) | |
download | linux-49615ba144a0929c725d08f0d3ba8494c8b77404.tar.bz2 |
scsi: ufs: override auto suspend tunables for ufs
Rework from previous work by:
Sujit Reddy Thumma <sthumma@codeaurora.org>
Override auto suspend tunables for UFS device LUNs during initialization so
as to efficiently manage background operations and the power consumption.
Link: https://lore.kernel.org/r/1568649411-5127-3-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.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/ufs/ufshcd.c')
-rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 034dd9cb9ec8..b580685eebcc 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -88,6 +88,9 @@ /* Interrupt aggregation default timeout, unit: 40us */ #define INT_AGGR_DEF_TO 0x02 +/* default delay of autosuspend: 2000 ms */ +#define RPM_AUTOSUSPEND_DELAY_MS 2000 + #define ufshcd_toggle_vreg(_dev, _vreg, _on) \ ({ \ int _ret; \ @@ -4631,9 +4634,14 @@ static int ufshcd_change_queue_depth(struct scsi_device *sdev, int depth) */ static int ufshcd_slave_configure(struct scsi_device *sdev) { + struct ufs_hba *hba = shost_priv(sdev->host); struct request_queue *q = sdev->request_queue; blk_queue_update_dma_pad(q, PRDT_DATA_BYTE_COUNT_PAD - 1); + + if (ufshcd_is_rpm_autosuspend_allowed(hba)) + sdev->rpm_autosuspend = 1; + return 0; } @@ -7069,6 +7077,7 @@ static struct scsi_host_template ufshcd_driver_template = { .track_queue_depth = 1, .sdev_groups = ufshcd_driver_groups, .dma_boundary = PAGE_SIZE - 1, + .rpm_autosuspend_delay = RPM_AUTOSUSPEND_DELAY_MS, }; static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg, |