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FROMGIT: scsi: ufs: override auto suspend tunables for ufs

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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>

Bug: 140620770
(cherry pick from 49615ba144
 https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git misc)
Change-Id: I35bc8d52c73db5d9e6936c5fbfb728b5436fcf1f
Signed-off-by: Todd Kjos <tkjos@google.com>
This commit is contained in:
Stanley Chu
2019-09-16 23:56:50 +08:00
committed by Todd Kjos
parent f58546bac3
commit a30de0e015
2 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/ufs/ufshcd.c
View File

@@ -89,6 +89,9 @@
/* 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; \
@@ -4668,6 +4671,9 @@ static int ufshcd_slave_configure(struct scsi_device *sdev)
ufshcd_crypto_setup_rq_keyslot_manager(hba, q);
if (ufshcd_is_rpm_autosuspend_allowed(hba))
sdev->rpm_autosuspend = 1;
return 0;
}
@@ -7109,6 +7115,7 @@ 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,

10
drivers/scsi/ufs/ufshcd.h
View File

@@ -755,6 +755,12 @@ struct ufs_hba {
* inline crypto engine, if it is present
*/
#define UFSHCD_CAP_CRYPTO (1 << 6)
/*
* This capability allows host controller driver to automatically
* enable runtime power management by itself instead of waiting
* for userspace to control the power management.
*/
#define UFSHCD_CAP_RPM_AUTOSUSPEND (1 << 6)
struct devfreq *devfreq;
struct ufs_clk_scaling clk_scaling;
@@ -797,6 +803,10 @@ static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
}
static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND;
}
static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
{