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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 99F78C49ED6 for ; Wed, 11 Sep 2019 09:49:49 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6E2C92082C for ; Wed, 11 Sep 2019 09:49:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bAsg1l+i" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E2C92082C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=/rJK3aI7wjuLu1zvaAeAZlMsjjub2O3nDsTu8o2/ByM=; b=bAsg1l+iFIOdld NdpYey/D6aNPJediW8dGawIMGxuHTPd778MIfxo90YOTDA7T4ZK+8UMTVoVE0sMxE2U6/nGftIopM PfTlGUh5WM//gIS3Wj2Mf2WL7h9yJzdacLwi82Cj/VqUf0bxb770a2wVyDD5mwLrgdWcQ/qBeeXBb +fw5KmSYh6rq/yCNBzYAoXC3p7pRkaw85aYQUzDoaJLpYxUUJkqV168rb9ZhYFlxWEoX3Btg/whj0 C24RSAvzQhhB2DwRSG7ZA3Nh2cjOku37goa6UKWNLUQmP/3nVrOL2nPXk0n5o7LpWZCDqCnrDgNSP q+aKE/fPmQ/2n0aiLn5A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i7zFy-0001rg-Hu; Wed, 11 Sep 2019 09:49:46 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7z8C-00023r-7g; Wed, 11 Sep 2019 09:41:46 +0000 X-UUID: 0185df83c7a34b6ba2b8b759ebdea2ac-20190911 X-UUID: 0185df83c7a34b6ba2b8b759ebdea2ac-20190911 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 440882430; Wed, 11 Sep 2019 01:41:40 -0800 Received: from MTKMBS01N2.mediatek.inc (172.21.101.79) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 11 Sep 2019 02:41:39 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n2.mediatek.inc (172.21.101.79) 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 17:41:31 +0800 From: Stanley Chu To: , , , , , , , Subject: [PATCH v1] scsi: allow auto suspend override by low-level driver Date: Wed, 11 Sep 2019 17:41:27 +0800 Message-ID: <1568194890-24439-1-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-TM-SNTS-SMTP: 553B7F30E90D0E6BCB4321C34F4944BCF487C5F0D2B7AA40AFB71F9F507E92932000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190911_024144_462382_FB5493B5 X-CRM114-Status: UNSURE ( 8.08 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marc.w.gonzalez@free.fr, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, evgreen@chromium.org, subhashj@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, vivek.gautam@codeaurora.org, matthias.bgg@gmail.com, Stanley Chu , linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Until now the scsi mid-layer forbids runtime suspend till userspace enables it. This is mainly to quarantine some disks with broken runtime power management or have high latencies executing suspend resume callbacks. If the userspace doesn't enable the runtime suspend the underlying hardware will be always on even when it is not doing any useful work and thus wasting power. Some low-level drivers for the controllers can efficiently use runtime power management to reduce power consumption and improve battery life. This patchset allows runtime suspend parameters override within the LLD itself instead of waiting for userspace to control the power management, and make UFS as the first user of this capability. Stanley Chu (3): scsi: core: allow auto suspend override by low-level driver scsi: ufs: override auto suspend tunables for ufs scsi: ufs-mediatek: enable auto suspend capability drivers/scsi/scsi_sysfs.c | 3 ++- drivers/scsi/sd.c | 3 +++ drivers/scsi/ufs/ufs-mediatek.c | 7 +++++++ drivers/scsi/ufs/ufshcd.c | 8 ++++++++ drivers/scsi/ufs/ufshcd.h | 10 ++++++++++ include/scsi/scsi_device.h | 2 +- 6 files changed, 31 insertions(+), 2 deletions(-) -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel