From 8cdca82049843e1e7a4bdab2715c744b31e9ade7 Mon Sep 17 00:00:00 2001 From: Sujit Reddy Thumma Date: Fri, 6 Dec 2013 20:05:55 +0530 Subject: [PATCH] scsi: ufs: Override auto suspend tunables for ufs Override auto suspend tunables for UFS device LUNs during initialization so as to efficiently manage background operations and the power consumption. Change-Id: Id7ff9e8a5c83b7503a329e71936af3234a22895b Signed-off-by: Sujit Reddy Thumma [gbroner@codeaurora.org: fix minor merge conflicts] Signed-off-by: Gilad Broner --- 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 f644d49f3adc..0ab04e2c1e66 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -101,6 +101,9 @@ /* 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; \ @@ -3183,6 +3186,9 @@ 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; }