From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E23FBC49ED6 for ; Wed, 11 Sep 2019 09:41:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C216C2067B for ; Wed, 11 Sep 2019 09:41:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727503AbfIKJlj (ORCPT ); Wed, 11 Sep 2019 05:41:39 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:10726 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727494AbfIKJlj (ORCPT ); Wed, 11 Sep 2019 05:41:39 -0400 X-UUID: 9d1bd9c79bef4517ab6cb3b3d38e2d31-20190911 X-UUID: 9d1bd9c79bef4517ab6cb3b3d38e2d31-20190911 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 115791807; Wed, 11 Sep 2019 17:41:33 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 11 Sep 2019 17:41:31 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 11 Sep 2019 17:41:32 +0800 From: Stanley Chu To: , , , , , , , CC: , , , , , , , , , , , , Stanley Chu Subject: [PATCH v1 2/3] scsi: ufs: override auto suspend tunables for ufs Date: Wed, 11 Sep 2019 17:41:29 +0800 Message-ID: <1568194890-24439-3-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1568194890-24439-1-git-send-email-stanley.chu@mediatek.com> References: <1568194890-24439-1-git-send-email-stanley.chu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Rework from previous work by: Sujit Reddy Thumma Override auto suspend tunables for UFS device LUNs during initialization so as to efficiently manage background operations and the power consumption. Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 8 ++++++++ drivers/scsi/ufs/ufshcd.h | 10 ++++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 30b752c61b97..d253a018a73b 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -88,6 +88,9 @@ /* 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; \ @@ -4612,9 +4615,14 @@ 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); + + if (ufshcd_is_rpm_autosuspend_allowed(hba)) + sdev->rpm_autosuspend_delay = RPM_AUTOSUSPEND_DELAY_MS; + return 0; } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index a43c7135f33d..99ea416519af 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -714,6 +714,12 @@ 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; @@ -747,6 +753,10 @@ 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) { -- 2.18.0