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=-3.8 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 8761EC49ED7 for ; Mon, 16 Sep 2019 06:48:10 +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 55ADF2067B for ; Mon, 16 Sep 2019 06:48:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="T2r35FAy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 55ADF2067B 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=x2qfQ7kPg+4CMuJ8RnqsnJN8g8qBSsk72aLZF5VX1A0=; b=T2r35FAyhHLFfA IT+r127RfX1P+VcvuECqPvlb0rjRCuITA8navT3zTIKwmMwpIehC2GoZ8DOxSTY6C4tMBuOongjsU 8rh08ka++QVRvT8xWvWqlgyFQzyUV4kv4HxqoVTzsVfy7Sz+HaFcICf/g2eWFPKzOUcNR8Xr3TLGp ZKh08SGMJ84hulkqLAYFihlCVNPYLrDxk0QknjnIwWL9GiQuEABvJGrRN1ZtP9U0XCJxcI87ShSFg qBNjrL5SLUqBGXXmwW0E6pLjhfb5KAAhKw1FVAa92fWoINv3HLPMhYoyscbgkxyKO5/5VsLatyfQu 0xiCiKckaWLFT7FshiNQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1i9knq-0007gR-RO; Mon, 16 Sep 2019 06:48:02 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1i9knQ-0007Jh-EG; Mon, 16 Sep 2019 06:47:37 +0000 X-UUID: 6f39e1dbb890442e9eccfcfb54d5a987-20190915 X-UUID: 6f39e1dbb890442e9eccfcfb54d5a987-20190915 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1004268676; Sun, 15 Sep 2019 22:47:33 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 15 Sep 2019 23:47:32 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 16 Sep 2019 14:47:18 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 16 Sep 2019 14:47:18 +0800 From: Stanley Chu To: , , , , , , , Subject: [PATCH v3 0/3] scsi: core: allow auto suspend override by low-level driver Date: Mon, 16 Sep 2019 14:47:14 +0800 Message-ID: <1568616437-16271-1-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190915_234736_570118_1FED94D5 X-CRM114-Status: UNSURE ( 8.84 ) 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 , kernel-team@android.com, 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. v2 => v3: - Create a member indicating autosuspend delay for the same SCSI host in SCSI host template (Bart) - Use separate variables to control different things, (Bart) (a) Whether or not runtime suspend is enabled at device creation time (b) The power management autosuspend delay v1 => v2: - Allow "zero" sdev->rpm_autosuspend_delay (Avri) - Fix format of some lines (Avri) 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 | 4 ++++ drivers/scsi/ufs/ufs-mediatek.c | 3 +++ drivers/scsi/ufs/ufshcd.c | 9 +++++++++ drivers/scsi/ufs/ufshcd.h | 10 ++++++++++ include/scsi/scsi_device.h | 2 +- include/scsi/scsi_host.h | 3 +++ 7 files changed, 32 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