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

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(Upstream commit 49615ba144)

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.

Change-Id: I4e64370dc87c9398bd2bd73cc744f8e19c38edd4
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>
This commit is contained in:
Stanley Chu
2019-09-11 17:21:28 +08:00
committed by Todd Kjos
parent 05c3a2445b
commit fd8c493dda
2 changed files with 18 additions and 0 deletions
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8
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; \
@@ -4583,11 +4586,15 @@ 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);
blk_queue_max_segment_size(q, PRDT_DATA_BYTE_COUNT_MAX);
if (ufshcd_is_rpm_autosuspend_allowed(hba))
sdev->rpm_autosuspend = 1;
return 0;
}
@@ -6758,6 +6765,7 @@ static struct scsi_host_template ufshcd_driver_template = {
.max_host_blocked = 1,
.track_queue_depth = 1,
.sdev_groups = ufshcd_driver_groups,
.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

@@ -691,6 +691,12 @@ struct ufs_hba {
* the performance of ongoing read/write operations.
*/
#define UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND (1 << 5)
/*
* 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;
@@ -721,6 +727,10 @@ 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)
{