From patchwork Mon Jan 30 14:33:57 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 9545511 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EDFA4604A8 for ; Mon, 30 Jan 2017 14:36:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E809525F31 for ; Mon, 30 Jan 2017 14:36:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DC4BD2811D; Mon, 30 Jan 2017 14:36:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00 autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 89B2125F31 for ; Mon, 30 Jan 2017 14:36:07 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cYD3t-0007Jt-2k; Mon, 30 Jan 2017 14:36:05 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cYD2j-0004qI-PV for linux-arm-kernel@lists.infradead.org; Mon, 30 Jan 2017 14:35:10 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id v0UEWWaO020424; Mon, 30 Jan 2017 15:34:18 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-.pphosted.com with ESMTP id 288hn1hsn2-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 30 Jan 2017 15:34:18 +0100 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 9561A31; Mon, 30 Jan 2017 14:34:17 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 631882A20; Mon, 30 Jan 2017 14:34:17 +0000 (GMT) Received: from localhost (10.75.127.48) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Mon, 30 Jan 2017 15:34:16 +0100 From: Fabrice Gasnier To: , , , , , Subject: [PATCH v2 2/5] iio: adc: stm32: add dt option to set default trigger polarity Date: Mon, 30 Jan 2017 15:33:57 +0100 Message-ID: <1485786840-4557-3-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1485786840-4557-1-git-send-email-fabrice.gasnier@st.com> References: <1485786840-4557-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.48] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-01-30_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170130_063454_697062_C944E277 X-CRM114-Status: UNSURE ( 8.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, benjamin.gaignard@linaro.org, lars@metafoo.de, alexandre.torgue@st.com, linux-iio@vger.kernel.org, pmeerw@pmeerw.net, mcoquelin.stm32@gmail.com, knaack.h@gmx.de, fabrice.gasnier@st.com, benjamin.gaignard@st.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP STM32 ADC trigger polarity can be set to either rising, falling or both edges. Add dt option to configure it. Note: default value may be overridden later via trigger_polarity sysfs attribute. Signed-off-by: Fabrice Gasnier --- drivers/iio/adc/stm32-adc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 9b49a6ad..be0e457 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -997,6 +997,13 @@ static int stm32_adc_probe(struct platform_device *pdev) return -EINVAL; } + of_property_read_u32(pdev->dev.of_node, "st,trigger-polarity", + &adc->trigger_polarity); + if (adc->trigger_polarity >= ARRAY_SIZE(stm32_trig_pol_items)) { + dev_err(&pdev->dev, "Invalid st,trigger-polarity property\n"); + return -EINVAL; + } + adc->irq = platform_get_irq(pdev, 0); if (adc->irq < 0) { dev_err(&pdev->dev, "failed to get irq\n");