From patchwork Fri Dec 20 08:36:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11305033 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A5FF813A4 for ; Fri, 20 Dec 2019 08:47:56 +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 7F99720716 for ; Fri, 20 Dec 2019 08:47:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KRMxzoav"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="dClNCxXh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F99720716 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+patchwork-linux-arm=patchwork.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:References:In-Reply-To: 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: List-Owner; bh=QnR5bR2ULwl0WbTsjygAn2mS1/9jQlly+Ctk5c43w68=; b=KRMxzoavvHFlxA lAMGa+mZ2eJKFjpXNuH5sD2ogdcoSffP4ZbMl+c9Qq+tSnk9i0+kaXd40LXtwpTs8riZv8pNH2mCG phVQG2payuQ0poCSXjAoVav9yfBg046WyWuKzA0rneRNxQfLFpvTKT90yQZFjGmYdEQ//boHZ52nM /ftX8XCG1LDr5u43tDWVbpDj/RnxVQwfxHR2rNZk5LwmyM5Bkz+9c6DLZ1zqIEUr0HSZklVL2Jllc iPD5zDLNTzJBYKRlrrXYTz2T3lfQt5eFhnCDEPbPDreAoKT8uIpHcZfhirDUTNWV6AlVE7vkGtscB EFBuoIL3W91w5Tn6D1PQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iiDwv-0005ZM-Ib; Fri, 20 Dec 2019 08:47:53 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iiDvo-0004Z2-0y; Fri, 20 Dec 2019 08:46:45 +0000 X-UUID: 2f47a3c6483f4d7f9768a49fdab2b7fc-20191220 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=1dTM/x2XgEndTdXRTGoeD0Ozp3L9tzAYcN6PciDyt3c=; b=dClNCxXhNVqDx8r6BXkfQwB5V9UU2+rjpa+fKc1h9T+wAcDpIniTtvT4Iu6Q4VJNu5U0OBOYuQRUwXR3NhoGyY1cqEpQIF/SZpwoZhaoZCpSZL7rw31YuPNY6kN1af9odjvCNWb9jS6eJDrLC7EyST4u1/eUQ0bLzMQp6xk5w20=; X-UUID: 2f47a3c6483f4d7f9768a49fdab2b7fc-20191220 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 726109059; Fri, 20 Dec 2019 00:46:40 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 20 Dec 2019 00:36:59 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 20 Dec 2019 16:35:59 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 20 Dec 2019 16:35:39 +0800 From: Stanley Chu To: , , , , , , , Subject: [PATCH v1 6/6] scsi: ufs-mediatek: configure and enable clk-gating Date: Fri, 20 Dec 2019 16:36:28 +0800 Message-ID: <1576830988-22435-7-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1576830988-22435-1-git-send-email-stanley.chu@mediatek.com> References: <1576830988-22435-1-git-send-email-stanley.chu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 367E02E7C7D61D709754BA5D29E13B252DAD17ECDB3D2FE27103CD478EB3C1812000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_004644_150308_C24D31A4 X-CRM114-Status: UNSURE ( 8.27 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines 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: leon.chen@mediatek.com, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, Stanley Chu , linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Enable clk-gating with customized delayed timer value in MediaTek Chipsets. Signed-off-by: Stanley Chu Reviewed-by: Alim Akhtar --- drivers/scsi/ufs/ufs-mediatek.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index 71e2e0e4ea11..282ad06ec846 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -205,6 +205,9 @@ static int ufs_mtk_init(struct ufs_hba *hba) /* Enable runtime autosuspend */ hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND; + /* Enable clock-gating */ + hba->caps |= UFSHCD_CAP_CLK_GATING; + /* * ufshcd_vops_init() is invoked after * ufshcd_setup_clock(true) in ufshcd_hba_init() thus @@ -293,6 +296,23 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba) return ret; } +static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba) +{ + unsigned long flags; + u32 ah_ms; + + if (ufshcd_is_clkgating_allowed(hba)) { + if (ufshcd_is_auto_hibern8_supported(hba) && hba->ahit) + ah_ms = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, + hba->ahit); + else + ah_ms = 10; + spin_lock_irqsave(hba->host->host_lock, flags); + hba->clk_gating.delay_ms = ah_ms + 5; + spin_unlock_irqrestore(hba->host->host_lock, flags); + } +} + static int ufs_mtk_post_link(struct ufs_hba *hba) { /* disable device LCC */ @@ -308,6 +328,8 @@ static int ufs_mtk_post_link(struct ufs_hba *hba) FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3)); } + ufs_mtk_setup_clk_gating(hba); + return 0; }