From patchwork Fri Mar 23 12:22:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naga Sureshkumar Relli X-Patchwork-Id: 889952 X-Patchwork-Delegate: cyrille.pitchen@atmel.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=xilinx.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="GZaMBaZH"; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=xilinx.onmicrosoft.com header.i=@xilinx.onmicrosoft.com header.b="XkZ3FWo0"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4072mC4Jlvz9s0b for ; Fri, 23 Mar 2018 23:24:43 +1100 (AEDT) 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=Qw+LcZS0mw60vKl993MGzB9KbBvhDOsdkWTGcaG4fBQ=; b=GZaMBaZHP7UCFT ZLumB+fS100fHmty+AgmCkgUfN155rZZa4q0DzyxK+TrE+ufsroSx1JxpPy7PO1v+JC/NRHr+YSgQ vDu89WauDDF8aHUAbgpIyNP3mXp1pPu7v+b7sMvzuVpP0VjJODXpayAF6qlmAuv1qeDPYF5ralOh9 quoTee1EnXQBQB380TzsjSW9/iz1Vg7HrWZ3phlPpxxsqetUwd17odTau41lRGUr1VhPhJflPX6x8 8x8El8oEQmTiBlPdJdDilBQFUUkJ66zKGnr4NXP9Aty18+jP5BXVFaiAvZARjKBOerpxn34gsmP/c lgODNTUa21vEwMdYZDBA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ezLkL-0007FG-9k; Fri, 23 Mar 2018 12:24:37 +0000 Received: from mail-cys01nam02on0086.outbound.protection.outlook.com ([104.47.37.86] helo=NAM02-CY1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ezLjP-0006Xh-4i for linux-mtd@lists.infradead.org; Fri, 23 Mar 2018 12:23:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xilinx.onmicrosoft.com; s=selector1-xilinx-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=8UcFiUHGgUUVKI7mx7wP9AarYKJmh/pt9K+t1yjwDZw=; b=XkZ3FWo0x9Dn2ViQfXLURkcI3oe8MlsYrStycCGqCsmiSVhMM4vWaWLn/0dOxshJg+ML525Zv8l9+RqlS5/UEVI0tYLbvW71ZNhTCaS2iEJzQbRHNPMOmHl2SJawGZTkb/NvzMLh5zkxwZ3+u0PEc/ZTA4NoYcGO33NWLUKPBVw= Received: from MWHPR02CA0027.namprd02.prod.outlook.com (2603:10b6:301:60::16) by DM5PR02MB2267.namprd02.prod.outlook.com (2603:10b6:3:4f::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.609.10; Fri, 23 Mar 2018 12:23:26 +0000 Received: from BL2NAM02FT028.eop-nam02.prod.protection.outlook.com (2a01:111:f400:7e46::204) by MWHPR02CA0027.outlook.office365.com (2603:10b6:301:60::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.609.10 via Frontend Transport; Fri, 23 Mar 2018 12:23:26 +0000 Authentication-Results: spf=temperror (sender IP is 149.199.60.100) smtp.mailfrom=xilinx.com; lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=temperror action=none header.from=xilinx.com; Received-SPF: TempError (protection.outlook.com: error in processing during lookup of xilinx.com: DNS Timeout) Received: from xsj-pvapsmtpgw02 (149.199.60.100) by BL2NAM02FT028.mail.protection.outlook.com (10.152.77.165) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.20.631.7 via Frontend Transport; Fri, 23 Mar 2018 12:23:23 +0000 Received: from unknown-38-66.xilinx.com ([149.199.38.66]:51234 helo=xsj-pvapsmtp01) by xsj-pvapsmtpgw02 with esmtp (Exim 4.63) (envelope-from ) id 1ezLj9-0000GR-9v; Fri, 23 Mar 2018 05:23:23 -0700 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from ) id 1ezLj4-0007Nu-74; Fri, 23 Mar 2018 05:23:18 -0700 Received: from xsj-pvapsmtp01 (xsj-pvapsmtp01.xilinx.com [149.199.38.66]) by xsj-smtp-dlp1.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id w2NCN8Pd017896; Fri, 23 Mar 2018 05:23:08 -0700 Received: from [172.23.37.108] (helo=xhdnagasure40.xilinx.com) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1ezLit-0007Js-Mg; Fri, 23 Mar 2018 05:23:08 -0700 From: Naga Sureshkumar Relli To: , , , , Subject: [RFC PATCH 4/5] spi: Add PM Support for Zynq QSPI controller Date: Fri, 23 Mar 2018 17:52:01 +0530 Message-ID: <1521807722-21626-5-git-send-email-nagasure@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521807722-21626-1-git-send-email-nagasure@xilinx.com> References: <1521807722-21626-1-git-send-email-nagasure@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.100; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(979002)(39380400002)(376002)(396003)(39860400002)(346002)(2980300002)(199004)(189003)(446003)(50466002)(59450400001)(48376002)(77096007)(426003)(11346002)(26005)(63370400001)(63350400001)(36756003)(186003)(76176011)(51416003)(47776003)(336012)(7696005)(4326008)(6666003)(16586007)(110136005)(54906003)(316002)(478600001)(8676002)(81156014)(81166006)(8936002)(97736004)(356003)(63266004)(39060400002)(305945005)(107886003)(53936002)(9786002)(2906002)(106002)(106466001)(50226002)(5660300001)(36386004)(2201001)(107986001)(217873001)(969003)(989001)(999001)(1009001)(1019001); DIR:OUT; SFP:1101; SCL:1; SRVR:DM5PR02MB2267; H:xsj-pvapsmtpgw02; FPR:; SPF:TempError; PTR:ErrorRetry; A:1; MX:1; LANG:en; X-Microsoft-Exchange-Diagnostics: 1; BL2NAM02FT028; 1:xo6d+EnubeYikBu6iWfHq3lrIiXTe5LnzuFyFMbLFeGvUMS9dxtQaBWjv1VN5+e/gU5I1Rq9c7nrQqW8Kn7Dx8h95EhEHvoRvmDkf/GN1/0NKM6nM0c8rcBMmH1pjD05 MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 143c0cf6-0a72-4d32-c1b6-08d590b8df81 X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(5600026)(4604075)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7153060); SRVR:DM5PR02MB2267; X-Microsoft-Exchange-Diagnostics: 1; DM5PR02MB2267; 3:bBSO+80hGE+MUZ0Yix9D0l/PeJMnlOJGfaMmc4Za1tU9x55Tk3KBe7vCMxrIxKbvMLJZCwVYo2Qf1xUlKe0fvw69lA1xmt9PoZCQ8AGSUAuSRQ+LoZe0xP/SICeHUJU4JdpFoz7cz0DnSAFAA+UjaNv4CkkI4EXC/OI3nHP31GoPuz3rNIiN55lDBSPlb3vNYV2jJjWmzuj5rPq2+lIUYXQ/vyZ6/1cxjecPMqPMqAsi5y4j4mIr6OIt/WN6E5BP920aP/ylXxVZ0/fHgtqMuGkOpbV2nfPXLN8H09taD1fCDftjecvd2gITZQ/9zgWm6JLA6tK+uKR0amf2im5S/KvHu3Nn3JioBZZQrXyvX7o=; 25:j6F7kFD+gnrzF17R4QWYJWSkIj5SCvElOyoRaEP5xXFX0PfHdY0nrVfrgYUJaak2XA6Ue79VvtSXtjLosDe1lrDQXOWXFVRYwavpcbUDrU/sMhOKvRPWw1XQntA4NJz40L+zdwIbnVR2m75q0tQXxLGhvGlNZcE3GGeUwu/TsKJncNfvz+NT70A/fCMNyyzxOfpa3oPN2ss8xt5dnY5HOapptu+2IlIVBTu/d6Jui/k+SGpK3V0bYo/ldmzn06oJkg4Ddzao1ZVfa/PWcZk9Jr22sugAemCxqZ4p204bNJGHqEDyn9YcrEumzA3QhwnP17W7TfgA8sY3wPsnEMCwjA== X-MS-TrafficTypeDiagnostic: DM5PR02MB2267: X-Microsoft-Exchange-Diagnostics: 1; DM5PR02MB2267; 31:H22NaXtlaJXzN+o43hWlrz3j7AF60+qfjbxh1bQz9E8KBk7fgxDvYhw7LTv0urIGr1It415eseW1BIv84NK8Jm9I1a9joMOCKniH8cy4UgMyHfhpEyH2qAqHJMqGM8/GH6lRZvhCicoD6AZE2kwZtxm6iYgGt52fTE4omliDcz5p+tKAupO1U0sVTbOZzHE/AgQT8suGtiuPvnG7qJK2AVNARYrJH8EPgVLr4eiC6L4=; 20: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 X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:(192813158149592); X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231221)(944501327)(52105095)(6055026)(6041310)(20161123558120)(20161123564045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123560045)(20161123562045)(6072148)(201708071742011); SRVR:DM5PR02MB2267; BCL:0; PCL:0; RULEID:; SRVR:DM5PR02MB2267; X-Microsoft-Exchange-Diagnostics: 1; DM5PR02MB2267; 4:ENKTWLdXVNtrMF4uDNfBw8IIbJxSH46x1fhuEEERE6AY54lzG1WxDd1QH5uJ72lc6eDfpk1sJ/Fez06KFjl3GGW04zuODK8iodweXmsLcldkh6uDE24h3oORLBziB8xBWmoxIv2+iu50AXv4Ay3qC2HePhylhrOSWUPr/o9j4mNvH3Ek3qCGdSV28nD6CgV6UtsW8eyeYh2/VVKJKhR+83wvPNcYuhC0H6CU9nEh0g2WNlHkX5RDbWW4s4qG9CAhYVZ/uKrJlUkq2uYVbRT3mXvZqlHT/VrEufpQT9y0z4+fqgG/U96BN9CkI/slrEHR X-Forefront-PRVS: 0620CADDF3 X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1; DM5PR02MB2267; 23:yzCyA1TGx04dwXNyKDi2ASiu2IhVgugfTcsIWVeN8?= 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 X-Microsoft-Antispam-Message-Info: kcE++9TjVaQ2PtzcCkAJ6mg8A46iC/obkjpCqaYJQi4xfkxeJTLuxDP7lKaPZdSggN5XfMH99LJ7UvXaoc3Py7XMJ9G2FUy9vLSz9Y1QpFlEKFoPOod7e6Bm62owXzaIEi/0fthf5cCKILQUqWVUb6XPEQ1zpl9uoahbaXT869znlIh8fmeLivckkvGQD2cI X-Microsoft-Exchange-Diagnostics: 1; DM5PR02MB2267; 6:PI+f1VH8zkuh/y/jgoGCYmQXh1E4kz7okLxLYx34LBvFALzkh049RmA3fTK3Vg0nDIR9pq6MfMGvcGWL4hLcV7Jswe6dwDvrDbhiWtVDpKkqLbgnaMZBSeweDrR/si1rD0JFNOK+VHiMfuEVBB0s+H6rcf7oUKKy9If/YZst5WeeMi6zalQtEDN5pbhUVuZEdJkMr1spviPWfl2catHnt/cS76aR//xDgNcKdjc+80nHOazA2ra5t6ri+EDSwR69yS7aiw28J1qFbIGlW+OwLWUGAKI36+akhuxzuSHlM3A3j9GEyoS/HFYIcCHQUnEKirlyR7u2ED3xODdg0Apbr57mvW3XFg+7tI7tnQG6XrneMCCglk9IXHzywY/0w72felIBOpwOYlqK+zTBVJnhazGOkG7caMfCLQanNEYiGEJ7nqaRS9u1SBL6tb43mOuRzRUytDUcZN6uoPSih/CZpQ==; 5:Y7qZREZXVZ8dRHi5C9GIAwA+McZY/otJuckiQbM3ACsreQghI8RvKjpI6GbnzIxQu5R0gDs0lHx/9ChOQYvGOHh1z183L8r4f29GEWwHgowEA4YPbOAInAFCsGMq4Sb1DfhZWBtDtcuuONf3yeA8Tp9Pp2iYxC00Gpjc0kNodg8=; 24:0jHQoT8Oe0A0wY6VLcFDlQ0h0XX/HCfsAcaUfxE/2BKfHbJr2rOz+RYFtbBrbY+PVar4cqOJOn6waMBfAJqxXikmcL70hhDY//n+XtL14gI= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1; DM5PR02MB2267; 7:JvIakc3O9oE+TFxOBIg/Zr3hmdFpT/dpuIJk+kmcW4L2T5wzg6ZSCaHwOeQYziEaxXoSZkNUHeA4CnLo+PKJTmm74b/0kS9Z/yMJz0jbdmJn4iwI0jkrhWlSKY+Wu+t60fYMmmndzzykmiF88S5hxilZ1Wwa0xY0DZyVShEGaKqdnaN4O57MAvy6TnnOQq1Us7fTDO2LMr7DW3K1pDhTJ0Gfe71+WijEsVbkTdz/JM9dCunVM0MVMs9sTVohiCAZ X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Mar 2018 12:23:23.9279 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 143c0cf6-0a72-4d32-c1b6-08d590b8df81 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c; Ip=[149.199.60.100]; Helo=[xsj-pvapsmtpgw02] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR02MB2267 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180323_052340_111491_A924ACE0 X-CRM114-Status: GOOD ( 10.65 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [104.47.37.86 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Naga Sureshkumar Relli , linux-mtd@lists.infradead.org Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org This patch adds PM Support for Xilinx Zynq QSPI Controller driver. Signed-off-by: Naga Sureshkumar Relli --- drivers/spi/spi-zynq-qspi.c | 58 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/drivers/spi/spi-zynq-qspi.c b/drivers/spi/spi-zynq-qspi.c index 7a772ca..9f87ee1 100644 --- a/drivers/spi/spi-zynq-qspi.c +++ b/drivers/spi/spi-zynq-qspi.c @@ -604,6 +604,64 @@ static int zynq_qspi_start_transfer(struct spi_master *master, } /** + * zynq_qspi_suspend - Suspend method for the QSPI driver + * @_dev: Address of the platform_device structure + * + * This function stops the QSPI driver queue and disables the QSPI controller + * + * Return: Always 0 + */ +static int __maybe_unused zynq_qspi_suspend(struct device *_dev) +{ + struct platform_device *pdev = container_of(_dev, + struct platform_device, dev); + struct spi_master *master = platform_get_drvdata(pdev); + + spi_master_suspend(master); + + zynq_unprepare_transfer_hardware(master); + + return 0; +} + +/** + * zynq_qspi_resume - Resume method for the QSPI driver + * @dev: Address of the platform_device structure + * + * The function starts the QSPI driver queue and initializes the QSPI controller + * + * Return: 0 on success and error value on error + */ +static int __maybe_unused zynq_qspi_resume(struct device *dev) +{ + struct platform_device *pdev = container_of(dev, + struct platform_device, dev); + struct spi_master *master = platform_get_drvdata(pdev); + struct zynq_qspi *xqspi = spi_master_get_devdata(master); + int ret = 0; + + ret = clk_enable(xqspi->pclk); + if (ret) { + dev_err(dev, "Cannot enable APB clock.\n"); + return ret; + } + + ret = clk_enable(xqspi->refclk); + if (ret) { + dev_err(dev, "Cannot enable device clock.\n"); + clk_disable(xqspi->pclk); + return ret; + } + + spi_master_resume(master); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(zynq_qspi_dev_pm_ops, zynq_qspi_suspend, +zynq_qspi_resume); + +/** * zynq_qspi_probe - Probe method for the QSPI driver * @pdev: Pointer to the platform_device structure *