From patchwork Wed May 23 16:08:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 919164 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=microchip.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="i/EWPAgN"; 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 40rctQ5fhmz9s15 for ; Thu, 24 May 2018 02:10:22 +1000 (AEST) 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=011HPhV+6sEBCnKhOiIhbKNI9avWPpg+aTi0961rr2o=; b=i/EWPAgNI3TvSF NrvNgc2JIVJwK+CECIAeZ9pdlWICTUOfRTv4cl6WmtBZb4QfZAv18COt2FkvehqCm0stDTSY72w2O Bk6kI9+5DXeuT6qjcVms3j9aY2nQKQBcT2i6r89EA9qpW3veHhq2ZGfbSr3aY5eWGYrlLR9Tq1ZtZ jaH9FQsObrGUx5jST2xLdJpQESPF5/N94sWrqhGLxBq1qADcrL/PxdsuBHiv397x/nsgKx2M53v5W 10fXih4uh+VpFfQluukU7of0MPCoOu/WgssBtDSVJRKeqC4zbCTA0xhYfugKjLCTN5+SYaZzhRub1 JCz21jruuIULjG0F0d7w==; 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 1fLWL6-0001bm-3L; Wed, 23 May 2018 16:10:12 +0000 Received: from esa4.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fLWKd-0001CK-SJ; Wed, 23 May 2018 16:09:45 +0000 X-IronPort-AV: E=Sophos;i="5.49,433,1520924400"; d="scan'208";a="14275990" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa4.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 23 May 2018 09:09:32 -0700 Received: from m18063-ThinkPad-T460p.microchip.com (10.10.76.4) by chn-sv-exch07.mchp-main.com (10.10.76.108) with Microsoft SMTP Server id 14.3.352.0; Wed, 23 May 2018 09:09:32 -0700 From: Claudiu Beznea To: , , , , , , Subject: [PATCH] mtd: atmel-quadspi: add suspend/resume hooks Date: Wed, 23 May 2018 19:08:48 +0300 Message-ID: <1527091728-19895-1-git-send-email-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180523_090943_971323_2A382CBB X-CRM114-Status: UNSURE ( 7.09 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [68.232.154.123 listed in list.dnswl.org] 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: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Claudiu Beznea Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Implement suspend/resume hooks. Signed-off-by: Claudiu Beznea --- drivers/mtd/spi-nor/atmel-quadspi.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c b/drivers/mtd/spi-nor/atmel-quadspi.c index 6c5708bacad8..85d7610fb920 100644 --- a/drivers/mtd/spi-nor/atmel-quadspi.c +++ b/drivers/mtd/spi-nor/atmel-quadspi.c @@ -737,6 +737,28 @@ static int atmel_qspi_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int atmel_qspi_suspend(struct device *dev) +{ + struct atmel_qspi *aq = dev_get_drvdata(dev); + + clk_disable_unprepare(aq->clk); + + return 0; +} + +static int atmel_qspi_resume(struct device *dev) +{ + struct atmel_qspi *aq = dev_get_drvdata(dev); + + clk_prepare_enable(aq->clk); + + return atmel_qspi_init(aq); +} +#endif + +static SIMPLE_DEV_PM_OPS(atmel_qspi_pm_ops, atmel_qspi_suspend, + atmel_qspi_resume); static const struct of_device_id atmel_qspi_dt_ids[] = { { .compatible = "atmel,sama5d2-qspi" }, @@ -749,6 +771,7 @@ static struct platform_driver atmel_qspi_driver = { .driver = { .name = "atmel_qspi", .of_match_table = atmel_qspi_dt_ids, + .pm = &atmel_qspi_pm_ops, }, .probe = atmel_qspi_probe, .remove = atmel_qspi_remove,