Messages in this thread Patch in this message | | | From | Asutosh Das <> | Subject | [PATCH v1 3/9] scsi: ufs: Override auto suspend tunables for ufs | Date | Fri, 6 Jul 2018 18:00:30 +0530 |
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From: 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.
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> --- 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; } -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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