From: Sujit Reddy Thumma <sthumma@xxxxxxxxxxxxxx>
Override auto suspend tunables for UFS device LUNs during
initialization so as to efficiently manage background operations
and the power consumption.
Signed-off-by: Sujit Reddy Thumma <sthumma@xxxxxxxxxxxxxx>
Signed-off-by: Gilad Broner <gbroner@xxxxxxxxxxxxxx>
Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufshcd.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 77e2b3e..b03f3ea 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -89,6 +89,9 @@
/* Interrupt aggregation default timeout, unit: 40us */
#define INT_AGGR_DEF_TO 0x02
+/* default value of auto suspend is 3 seconds */
+#define UFSHCD_AUTO_SUSPEND_DELAY_MS 3000 /* millisecs */
+
#define ufshcd_toggle_vreg(_dev, _vreg, _on) \
({ \
int _ret; \
@@ -4528,6 +4531,9 @@ static int ufshcd_slave_configure(struct scsi_device *sdev)
blk_queue_update_dma_pad(q, PRDT_DATA_BYTE_COUNT_PAD - 1);
blk_queue_max_segment_size(q, PRDT_DATA_BYTE_COUNT_MAX);
+ sdev->autosuspend_delay = UFSHCD_AUTO_SUSPEND_DELAY_MS;
+ sdev->use_rpm_auto = 1;
+
return 0;
}
--
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Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
