From patchwork Wed Mar 6 08:55:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 10840605 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 404B81869 for ; Wed, 6 Mar 2019 08:56:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2894E2BE02 for ; Wed, 6 Mar 2019 08:56:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1CE652C155; Wed, 6 Mar 2019 08:56:39 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B5B2B2BE02 for ; Wed, 6 Mar 2019 08:56:38 +0000 (UTC) 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:References:In-Reply-To: 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: List-Owner; bh=IvinP52JI8UgITQ4R5bIICXB9L9cbCh4bcuVqg+HEJ0=; b=V8rylv6Iys73dI R+xxd4+jroSdXh89dJFEzvY3h7JTNmX1WsrYniynXZRU3h3jyTOo2GWNd/ohdoIzIHlHrFkyWGyht oiaovtRYYSjHe5+ynBi/9Ko5j2joaHoZ7OHV0F+mqj6bINcpUuOZ1YBtFVTDqNGNmkc2L7/atNC2l IGOTlK7oGF46/UTDH4GqljvLM8z2nufwBs5yxs+03Rpk9aVp6nOdVMkMMWiGEQxjswq2h4z+did/F bC/wJBVP2TPoG5oXN0Ttnfovet3Rf6f8lC2RHYnmLUdmSZcbH6tdzBJQLrSD5vwUQ8kTFiti07+vI AuQI63S3ePoqQlNZ95pg==; 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 1h1SLp-0003Ru-Fb; Wed, 06 Mar 2019 08:56:33 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1SLI-0002gp-6x for linux-arm-kernel@lists.infradead.org; Wed, 06 Mar 2019 08:56:02 +0000 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x268q6XN022884; Wed, 6 Mar 2019 09:55:52 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2qyhkn6rcx-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 06 Mar 2019 09:55:52 +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 4213D34; Wed, 6 Mar 2019 08:55:51 +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 0FDAA23FE; Wed, 6 Mar 2019 08:55:51 +0000 (GMT) Received: from localhost (10.75.127.44) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 6 Mar 2019 09:55:50 +0100 From: Fabrice Gasnier To: Subject: [PATCH 5/8] iio: adc: stm32-dfsdm: enable hw consumer Date: Wed, 6 Mar 2019 09:55:21 +0100 Message-ID: <1551862524-25098-6-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551862524-25098-1-git-send-email-fabrice.gasnier@st.com> References: <1551862524-25098-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG7NODE1.st.com (10.75.127.19) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-06_05:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190306_005600_676665_7B49408E X-CRM114-Status: GOOD ( 11.61 ) 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: lars@metafoo.de, olivier.moysan@st.com, alexandre.torgue@st.com, linux-iio@vger.kernel.org, pmeerw@pmeerw.net, arnaud.pouliquen@st.com, linux-kernel@vger.kernel.org, mcoquelin.stm32@gmail.com, knaack.h@gmx.de, fabrice.gasnier@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org 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 Optionally enable IIO hw consumer, when provided (e.g. for DFSDM_IIO type). This is precursor patch to introduce buffer modes. Signed-off-by: Fabrice Gasnier --- drivers/iio/adc/stm32-dfsdm-adc.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index 66e2ea0..b491424 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -630,9 +630,15 @@ static int stm32_dfsdm_postenable(struct iio_dev *indio_dev) /* Reset adc buffer index */ adc->bufi = 0; + if (adc->hwc) { + ret = iio_hw_consumer_enable(adc->hwc); + if (ret < 0) + return ret; + } + ret = stm32_dfsdm_start_dfsdm(adc->dfsdm); if (ret < 0) - return ret; + goto err_stop_hwc; ret = stm32_dfsdm_adc_dma_start(indio_dev); if (ret) { @@ -652,6 +658,9 @@ static int stm32_dfsdm_postenable(struct iio_dev *indio_dev) stm32_dfsdm_adc_dma_stop(indio_dev); stop_dfsdm: stm32_dfsdm_stop_dfsdm(adc->dfsdm); +err_stop_hwc: + if (adc->hwc) + iio_hw_consumer_disable(adc->hwc); return ret; } @@ -667,6 +676,9 @@ static int stm32_dfsdm_predisable(struct iio_dev *indio_dev) stm32_dfsdm_stop_dfsdm(adc->dfsdm); + if (adc->hwc) + iio_hw_consumer_disable(adc->hwc); + return 0; }