From patchwork Tue Nov 15 10:31:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier Moysan X-Patchwork-Id: 13043463 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C094DC4332F for ; Tue, 15 Nov 2022 10:49:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=BWZbGDkjeQB+EWMbU1pzakIK3q4gdg+m+vR6Cuilytc=; b=KkH7ohBzv2dyuQ d7idQ8aiKnH7R0B8jYME/oUcgJQ0rpt4Mx8HN1yJxlHm4ZfTkAtttDiAJ0zBrVVCC4yxrGftp6Wvo mEyrIlaglFU/YoE9we0rADHh0ZicJHdOnfpRATObrLEVkNrAkFFrJT4uf2Z+Ph9q204SFXxfzSG57 0iuPRw/g5Gf5eJOvsawX5qWKgvAKn5bNJ0eboxtKbzF3Zzr7NRpGkiKKyNiXpAZLXWJRkCz4pQIBm Cvds61PjfMtX1Z8TWwG5EBaGWBvx23/qvP5RWU2nlhhh0W85lutkUDMruLZLCIK6C52Hhoh+6OAy4 WD5q3A/P7zUAWpPHSrlA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1outUa-00A8cE-6s; Tue, 15 Nov 2022 10:48:36 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1outHD-009zax-Vc for linux-arm-kernel@lists.infradead.org; Tue, 15 Nov 2022 10:34:50 +0000 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2AFA98s2007401; Tue, 15 Nov 2022 11:34:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=hIRd56RJEPsYoe2M/RxriY/Cri8HJyV+94pW088mtLc=; b=GiP3oC2Ij8aYXoCYqNIF4asqEr9kzlst//gEGyr1+H54Q/lHFDyqsCZ8GxTNiUdGpjf4 q22kay7Tq7Es+N5nl47k7ojvc5qeFSrZs08Awz3rpJONuR77MpG7VowseCUIo9evu4Jb FtEcgEdwsYviknqUJqDYTDNN+EbToZMKebztniKXkslrXYd56Iz/mTjQKsnolMzmvwGM qFVldb+LHcnuPmeAedF0mVUHvsx3rBafQRN9EePjWf4BIcvtgM/fwUgonQ/hgpSYUlrx QnW228kKFtsJ5IPh3WjER6F5N5kcmbwM4u4SzZK+1Xxdp0EBbIUrtnbAa+TCMAT1YS7R Og== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3ktq2ynee2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Nov 2022 11:34:38 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 02FA0100039; Tue, 15 Nov 2022 11:34:34 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id F01CF21A206; Tue, 15 Nov 2022 11:34:33 +0100 (CET) Received: from localhost (10.201.20.178) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.32; Tue, 15 Nov 2022 11:34:33 +0100 From: Olivier Moysan To: , Jonathan Cameron , Lars-Peter Clausen , Maxime Coquelin , Alexandre Torgue CC: Olivier Moysan , , , , Subject: [PATCH 3/3] iio: adc: stm32-adc: add debugfs to read raw calibration result Date: Tue, 15 Nov 2022 11:31:23 +0100 Message-ID: <20221115103124.70074-4-olivier.moysan@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221115103124.70074-1-olivier.moysan@foss.st.com> References: <20221115103124.70074-1-olivier.moysan@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.20.178] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-15_05,2022-11-15_01,2022-06-22_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221115_023448_442291_89DB79EC X-CRM114-Status: GOOD ( 18.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add debugfs to read linear ADC STM32 self calibration results. Signed-off-by: Fabrice Gasnier Signed-off-by: Olivier Moysan --- drivers/iio/adc/stm32-adc.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 65dd45537505..45d4e79f8e55 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -1879,6 +1880,23 @@ static const struct iio_chan_spec_ext_info stm32_adc_ext_info[] = { {}, }; +static void stm32_adc_debugfs_init(struct iio_dev *indio_dev) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + struct dentry *d = iio_get_debugfs_dentry(indio_dev); + struct stm32_adc_calib *cal = &adc->cal; + char buf[16]; + unsigned int i; + + if (!adc->cfg->has_linearcal) + return; + + for (i = 0; i < STM32H7_LINCALFACT_NUM; i++) { + snprintf(buf, sizeof(buf), "lincalfact%d", i + 1); + debugfs_create_u32(buf, 0444, d, &cal->lincalfact[i]); + } +} + static int stm32_adc_fw_get_resolution(struct iio_dev *indio_dev) { struct device *dev = &indio_dev->dev; @@ -2465,6 +2483,9 @@ static int stm32_adc_probe(struct platform_device *pdev) pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); + if (IS_ENABLED(CONFIG_DEBUG_FS)) + stm32_adc_debugfs_init(indio_dev); + return 0; err_hw_stop: @@ -2493,6 +2514,7 @@ static int stm32_adc_remove(struct platform_device *pdev) struct stm32_adc *adc = iio_priv(indio_dev); pm_runtime_get_sync(&pdev->dev); + /* iio_device_unregister() also removes debugfs entries */ iio_device_unregister(indio_dev); stm32_adc_hw_stop(&pdev->dev); pm_runtime_disable(&pdev->dev);