From patchwork Wed Nov 4 16:13:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 540019 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 109E1140E31 for ; Thu, 5 Nov 2015 03:21:02 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=vanguardiasur_com_ar.20150623.gappssmtp.com header.i=@vanguardiasur_com_ar.20150623.gappssmtp.com header.b=nswpqhIT; dkim-atps=neutral Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zu0lz-0001Is-6X; Wed, 04 Nov 2015 16:18:55 +0000 Received: from mail-qk0-x22d.google.com ([2607:f8b0:400d:c09::22d]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zu0li-00017v-KX for linux-mtd@lists.infradead.org; Wed, 04 Nov 2015 16:18:40 +0000 Received: by qkct129 with SMTP id t129so21916965qkc.2 for ; Wed, 04 Nov 2015 08:18:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vanguardiasur_com_ar.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=+f9MWH39S5dSyABs4ahXSSIButZwoUaGiShTMyxgjgk=; b=nswpqhITh0Sermy9hYRXa/Co2vIRvdo//99RIdqJLslVmIcYHWpiWYUV0zwQQ4ASQc zgFh942JIe7BTRBWP0sKTKCAHb/w5PbW8EMMZvNmgVzx+bzQtQ9k6NFOmEs1bM0LDnRD adVvdJxj90ovn6x4znJOP0sJ6IduwQRkyJyzAhEn5pp+dSYvjZzxmsqiajA9LZxcM5kj PQaRFHh6Kedf3CypJlt5/1s/mfy0BrzeHCIEMGqYeW9XaUT4jJO6NYPBoD/+nBF2q/aH lRufXZbKGuK2d+N7sch7qcsQd0iIljC043ggsnoBEWDhjd3FFEJ/s63D29HwSSCqqbGW g0ZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=+f9MWH39S5dSyABs4ahXSSIButZwoUaGiShTMyxgjgk=; b=POAEMHMrZ8GMDfUfESXOX0VhOInHt3nsYyumE29oAA7vu9LHTvXrBRNR+WpXpgHv1y G8o0c3oA1ikIFFHYwEcJw2ZDnrTBpyn8PthhPeqcv6dpY0FXbCrdHuEbB8t85UBM19DJ yZi+bYXHxQjbu6OFrsQQRBC+0QLMi9ur/5r3QHqAi0IxF/9TkCKtnHJ3yh0Y639v9+Qu rTqYOcJ/HTCpig7T9CaZ7whdB51QyTx88PGRXp/2hZvjryaEjc2s67sfU5y/nhVdvw4D pEqixU3F4oCgJFmB60o+AoUtNhM+Ewsxgkhrk08tHvZWJ6/Tmjn5NcOeQw/1sea/C5sZ KxJg== X-Gm-Message-State: ALoCoQmJMuSyBhYSEppABC19ZGNWJy3YVzKi4kxCxFSh/Qy1IPS/dOcuuKM4KMDHLDkSC3roLpaG X-Received: by 10.55.71.203 with SMTP id u194mr2277632qka.14.1446653897205; Wed, 04 Nov 2015 08:18:17 -0800 (PST) Received: from localhost.localdomain ([190.2.108.156]) by smtp.gmail.com with ESMTPSA id p9sm490890qhp.38.2015.11.04.08.18.15 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 04 Nov 2015 08:18:16 -0800 (PST) From: Ezequiel Garcia To: Subject: [PATCH 6/6] mtd: pxa3xx_nand: Gate/ungate the NAND clock in suspend/resume paths Date: Wed, 4 Nov 2015 13:13:46 -0300 Message-Id: <1446653626-14802-7-git-send-email-ezequiel@vanguardiasur.com.ar> X-Mailer: git-send-email 2.5.2 In-Reply-To: <1446653626-14802-1-git-send-email-ezequiel@vanguardiasur.com.ar> References: <1446653626-14802-1-git-send-email-ezequiel@vanguardiasur.com.ar> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151104_081838_972666_12C730C5 X-CRM114-Status: GOOD ( 10.67 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400d:c09:0:0:0:22d listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 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: 2.1.20 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Antoine Tenart , Brian Norris , Robert Jarzmik , Ezequiel Garcia MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org The NAND clock can be disabled on suspend and enabled on resume. Signed-off-by: Ezequiel Garcia Acked-by: Robert Jarzmik --- drivers/mtd/nand/pxa3xx_nand.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 0e6eb6c1f9b3..13371d6e9ba5 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1936,12 +1936,18 @@ static int pxa3xx_nand_suspend(struct device *dev) return -EAGAIN; } + clk_disable(info->clk); return 0; } static int pxa3xx_nand_resume(struct device *dev) { struct pxa3xx_nand_info *info = dev_get_drvdata(dev); + int ret; + + ret = clk_enable(info->clk); + if (ret < 0) + return ret; /* We don't want to handle interrupt without calling mtd routine */ disable_int(info, NDCR_INT_MASK);