From patchwork Tue Apr 19 12:18:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrice CHOTARD X-Patchwork-Id: 8879371 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6E9609F39A for ; Tue, 19 Apr 2016 12:21:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 87512202A1 for ; Tue, 19 Apr 2016 12:21:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AF260200E7 for ; Tue, 19 Apr 2016 12:21:47 +0000 (UTC) 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 1asUdk-0002kq-GX; Tue, 19 Apr 2016 12:20:24 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1asUck-0000k7-IL for linux-arm-kernel@lists.infradead.org; Tue, 19 Apr 2016 12:19:23 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u3JCGRup025650; Tue, 19 Apr 2016 14:18:58 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 22bah68std-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 19 Apr 2016 14:18:58 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id DFABC3A; Tue, 19 Apr 2016 12:18:57 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas23.st.com [10.75.90.46]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id AF5E6620; Tue, 19 Apr 2016 12:18:57 +0000 (GMT) Received: from localhost (10.48.1.66) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.279.2; Tue, 19 Apr 2016 14:18:57 +0200 From: To: , , , , Subject: [PATCH 8/8] gpio: stmpe: configure GPIO as output by default Date: Tue, 19 Apr 2016 14:18:37 +0200 Message-ID: <1461068317-28016-9-git-send-email-patrice.chotard@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1461068317-28016-1-git-send-email-patrice.chotard@st.com> References: <1461068317-28016-1-git-send-email-patrice.chotard@st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.1.66] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-04-19_09:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160419_051922_993471_13098926 X-CRM114-Status: UNSURE ( 9.60 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gnurou@gmail.com, amelie.delaunay@st.com, swarren@wwwdotorg.org, vireshk@kernel.org, Patrice Chotard , thierry.reding@gmail.com, kernel@pengutronix.de, dinguyen@opensource.altera.com, shawnguo@kernel.org, shiraz.linux.kernel@gmail.com, linux-arm-kernel@lists.infradead.org, maxime.coquelin@st.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Patrice Chotard Configures all GPIOs as output, in order to minimize power consumption when GPIOs are unused. Signed-off-by: Amelie DELAUNAY Signed-off-by: Patrice Chotard --- drivers/gpio/gpio-stmpe.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c index 45e5b92..80c6ae6 100644 --- a/drivers/gpio/gpio-stmpe.c +++ b/drivers/gpio/gpio-stmpe.c @@ -410,7 +410,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev) struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent); struct device_node *np = pdev->dev.of_node; struct stmpe_gpio *stmpe_gpio; - int ret; + int ret, i; int irq = 0; irq = platform_get_irq(pdev, 0); @@ -475,6 +475,10 @@ static int stmpe_gpio_probe(struct platform_device *pdev) NULL); } + /* To minimize power consumption, configure unused GPIOs as outputs */ + for (i = 0; i < stmpe_gpio->chip.ngpio; i++) + stmpe_gpio_direction_output(&stmpe_gpio->chip, i, 0); + platform_set_drvdata(pdev, stmpe_gpio); return 0;