From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932422AbdA3Pdb (ORCPT ); Mon, 30 Jan 2017 10:33:31 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:19765 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753739AbdA3PdF (ORCPT ); Mon, 30 Jan 2017 10:33:05 -0500 From: Fabrice Gasnier To: , , , , , CC: , , , , , , , , , Subject: [PATCH 2/5] iio: adc: stm32: add dt option to set default trigger polarity Date: Mon, 30 Jan 2017 14:57:40 +0100 Message-ID: <1485784663-19505-3-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1485784663-19505-1-git-send-email-fabrice.gasnier@st.com> References: <1485784663-19505-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.75.127.48] X-ClientProxiedBy: SFHDAG6NODE1.st.com (10.75.127.16) 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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"); -- 1.9.1