From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2171CC43603 for ; Wed, 18 Dec 2019 16:24:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0173227BF for ; Wed, 18 Dec 2019 16:24:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=microchiptechnology.onmicrosoft.com header.i=@microchiptechnology.onmicrosoft.com header.b="WfbfkTHo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727557AbfLRQYI (ORCPT ); Wed, 18 Dec 2019 11:24:08 -0500 Received: from esa5.microchip.iphmx.com ([216.71.150.166]:32906 "EHLO esa5.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727473AbfLRQYG (ORCPT ); Wed, 18 Dec 2019 11:24:06 -0500 Received-SPF: Pass (esa5.microchip.iphmx.com: domain of Eugen.Hristev@microchip.com designates 198.175.253.82 as permitted sender) identity=mailfrom; client-ip=198.175.253.82; receiver=esa5.microchip.iphmx.com; envelope-from="Eugen.Hristev@microchip.com"; x-sender="Eugen.Hristev@microchip.com"; x-conformance=spf_only; x-record-type="v=spf1"; x-record-text="v=spf1 mx a:ushub1.microchip.com a:smtpout.microchip.com -exists:%{i}.spf.microchip.iphmx.com include:servers.mcsv.net include:mktomail.com include:spf.protection.outlook.com ~all" Received-SPF: None (esa5.microchip.iphmx.com: no sender authenticity information available from domain of postmaster@email.microchip.com) identity=helo; client-ip=198.175.253.82; receiver=esa5.microchip.iphmx.com; envelope-from="Eugen.Hristev@microchip.com"; x-sender="postmaster@email.microchip.com"; x-conformance=spf_only Authentication-Results: esa5.microchip.iphmx.com; spf=Pass smtp.mailfrom=Eugen.Hristev@microchip.com; spf=None smtp.helo=postmaster@email.microchip.com; dkim=pass (signature verified) header.i=@microchiptechnology.onmicrosoft.com; dmarc=pass (p=none dis=none) d=microchip.com IronPort-SDR: 54t8XRM829Q2q/CWuqD/LrgHY2/4F1miElyj+WbnYMSQTkqDteWZLdC9VsgsmdD2lLDoS/bfq/ wkUbM4GZeXTvdFW0YGmCnaRee/JgoBx7dhDJ8qjEBYHihfpi+XwMcp9nvpCpILn0T8RTf/wOfT ZgBFRhHOwBaGPi5MT0pGBo+kecAeIbrrGsLiwNQDKJ9MggGGSinoqDVOEifgOilWn682xgucjj HuXy6K6pTB+unqVg/QdGYUz7fbcf4uyS2N6VrPwUj+QW2moX0b78IdPI7V3h2YqXQp7WqdQPiF STM= X-IronPort-AV: E=Sophos;i="5.69,330,1571727600"; d="scan'208";a="59426831" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 18 Dec 2019 09:24:06 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 18 Dec 2019 09:24:03 -0700 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (10.10.215.89) by email.microchip.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5 via Frontend Transport; Wed, 18 Dec 2019 09:24:03 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ofKReA+c+mO8H6rxGzY9S5ANOykX+6h5qyZgQnatylGxsv/1lvOHtQuyGcOTJTQMwQfzsnymTlAGn5+6E+BZGWOcxjIHSKzRRkBSeTd5eSnuIXiUOWSQfVYR3LjM4WRao3WLNMxn+npxIzsnYzGa91jwkAfaAnh7FmLDb1SaUS7QBLWgNktpZj0XZeUDsPkK+ERpmQT4ZaMnaVbNsJ6i/5o3U0okAcwFL94EnqHsI+cUNcIA9b2R/JmJTyCjA7xYCCMtLqsaKgpcXh3Gj8kau0NanlCpwVTe27EJ7LAk+V1nBBymx/ImF6Z1ixza2xBKmd+aEid+hEFEtSC1qM0/bQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=McsuxWfwAiDTwpWDkwexX3EQK7P5A7czExPwE95bd/k=; b=hdozcbTDDTTaDss4rCRZVgVtblJnQiWSqdO026MOGQZr5PUHqTnRZgOU2WsDLKjauGYFkbg3h1RzGacTW8ciPnUaLySk7jwoV8N/VwSnRVT7zrFZJtJyPUKY5hr+Bsn8SD4vTTHDBqtGp/KfPMGGb+D9zXiYFCD9CG4N2JUdW1TAEqsdYTblMFSACaZxYGTvaGfvUIFVSitHA2HJfG9yRHbXM+Rnv1d5I1ZTL1jIB9fi8RmuIa/5W9qUrum/DHP17oIjM28rW5Bawp5H60vIhglu+zoeOWnjdJNi47uIjjh45oQCStrmhOSWkYij1H0OxT1y8PEiLnp95OCna29HEg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microchip.com; dmarc=pass action=none header.from=microchip.com; dkim=pass header.d=microchip.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microchiptechnology.onmicrosoft.com; s=selector2-microchiptechnology-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=McsuxWfwAiDTwpWDkwexX3EQK7P5A7czExPwE95bd/k=; b=WfbfkTHosP+S2fneiaHS/bZtoa/uOtBS08IxzmLCrUoJy6efVg9b/7xCVFw05j78IBmZIOXcNI6cDeFmLtL87/Zh7CsFs8XaaT257Yeihl+nDJrYvZIbcd1fRBcXM+gqIW2jjAKzkBQjoAjvJ2FyGyopKXljLcI/h/elmMPDfZI= Received: from DM5PR11MB1242.namprd11.prod.outlook.com (10.168.108.8) by DM5PR11MB1769.namprd11.prod.outlook.com (10.175.87.19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2538.19; Wed, 18 Dec 2019 16:24:03 +0000 Received: from DM5PR11MB1242.namprd11.prod.outlook.com ([fe80::9039:e0e8:9032:20c1]) by DM5PR11MB1242.namprd11.prod.outlook.com ([fe80::9039:e0e8:9032:20c1%12]) with mapi id 15.20.2559.012; Wed, 18 Dec 2019 16:24:03 +0000 From: To: , , CC: , , , , , , , , Subject: [PATCH 07/10] iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode Thread-Topic: [PATCH 07/10] iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode Thread-Index: AQHVtb+PmhwCEX7J1UOzKiW28GxaNQ== Date: Wed, 18 Dec 2019 16:24:02 +0000 Message-ID: <1576686157-11939-8-git-send-email-eugen.hristev@microchip.com> References: <1576686157-11939-1-git-send-email-eugen.hristev@microchip.com> In-Reply-To: <1576686157-11939-1-git-send-email-eugen.hristev@microchip.com> Accept-Language: en-US, ro-RO Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 52e8501c-9637-4c66-d7fd-08d783d6b289 x-ms-traffictypediagnostic: DM5PR11MB1769: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; x-forefront-prvs: 0255DF69B9 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(366004)(396003)(39860400002)(136003)(346002)(376002)(199004)(189003)(66476007)(66946007)(66446008)(76116006)(91956017)(2616005)(64756008)(66556008)(86362001)(186003)(316002)(110136005)(8676002)(54906003)(8936002)(71200400001)(81166006)(478600001)(2906002)(6512007)(26005)(81156014)(36756003)(4326008)(6506007)(5660300002)(6486002)(107886003);DIR:OUT;SFP:1101;SCL:1;SRVR:DM5PR11MB1769;H:DM5PR11MB1242.namprd11.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: Udr616FaIBeDmaSkpQNCsm7NPPt9RRG+WunS1+bI5x6eTtAsAyBQMqBEXxEFz7Un6h55ouGvPRwxdl9MYyE3+/i3V3Dd7WnZSzLjkaxyfgJh5Aey68AOJV/N4f8delzWXm5FYahECd1+y4hV17fM/vp71D5w9+FSBWfjHWAJ117D/xEeMm+/juP0hevnZPbkVQDxYN8jiiHKaKF8UwxA7BhISrxmtZwfRgxNwasAj2ZCRu8K58A3n2tDfv2EhqtD9NKlPu4QdrKzlHm5y2MTKb/Sd/9YwewL7pt9iW+E4qND4nPWhgxVAOtyU8T3QYIFmH0F7OBD1k7cbeC0hT8Kwv8kTnlpJCcJDNyXyX1n09fUtlc3WDAiQfdPxQ36wsc3XHvopIudjw2Y+0JhuPL9Fenwz72oQaQWC5pbk9ZUyASp5Y1VUjeUl316fz3lY5zT Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 52e8501c-9637-4c66-d7fd-08d783d6b289 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2019 16:24:02.1770 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: VL92VuJQSbOkmkVR5Or1deDyjvDpthl4dMu0WUQS9Oj0hk5/px4q1mAORgPOxHQ6lBYPrBUDuMicr8wO6IwHsJ29vJ+jPlFiyugDCsJBqfg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1769 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eugen Hristev The differential channels require writing the channel offset register (COR)= . Otherwise they do not work in differential mode. The configuration of COR is missing in triggered mode. Signed-off-by: Eugen Hristev --- drivers/iio/adc/at91-sama5d2_adc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama= 5d2_adc.c index a6b4dff..ccffa48 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -900,6 +900,7 @@ static int at91_adc_buffer_postenable(struct iio_dev *i= ndio) =20 for_each_set_bit(bit, indio->active_scan_mask, indio->num_channels) { struct iio_chan_spec const *chan =3D at91_adc_chan_get(indio, bit); + u32 cor; =20 if (!chan) continue; @@ -908,6 +909,17 @@ static int at91_adc_buffer_postenable(struct iio_dev *= indio) chan->type =3D=3D IIO_PRESSURE) continue; =20 + cor =3D at91_adc_readl(st, AT91_SAMA5D2_COR); + + if (chan->differential) + cor |=3D (BIT(chan->channel) | BIT(chan->channel2)) << + AT91_SAMA5D2_COR_DIFF_OFFSET; + else + cor &=3D ~(BIT(chan->channel) << + AT91_SAMA5D2_COR_DIFF_OFFSET); + + at91_adc_writel(st, AT91_SAMA5D2_COR, cor); + at91_adc_writel(st, AT91_SAMA5D2_CHER, BIT(chan->channel)); if (use_irq) { at91_adc_writel(st, AT91_SAMA5D2_IER, --=20 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3E75C43603 for ; Wed, 18 Dec 2019 16:27:47 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C09D624650 for ; Wed, 18 Dec 2019 16:27:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qvVjWL5Y"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=microchiptechnology.onmicrosoft.com header.i=@microchiptechnology.onmicrosoft.com header.b="WfbfkTHo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C09D624650 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=microchip.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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:In-Reply-To:References: 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=yRBXWkzBVlUnjb5CzCc4yiR+x/Ycj/OOnwF3cmZ/QdY=; b=qvVjWL5YRBFbvW e7ltCMfezqEnfWBYKqyh4lH07jJLSrSGGNFxcYrGBOd9os7OMB7w/k368b0eKADbmiClbLt6W1ha8 fZ+0YTpZKeSqZ0K9sbo223mw5W0P61eOLWrZpNySD0ybKOj9+G5sGXdrajHwajBCwDUGh9nUOTBeS lY1pcDS+qqTuqRyMHzK86lv8OB6Pc1IW2M6tlrYYQzIxZCmfQl26pQ07O3mxzSLsiSPO2jC8GRgMy OqDgIrIedZNOMXN3DNargxksUvlSoHj0G64uAntXZIn8Md6EozyrUCvfbtH5SFTqNUlFajo4bFrlE IoSmMrfJk15d8MQ8TiAw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihcAk-0001qt-HA; Wed, 18 Dec 2019 16:27:38 +0000 Received: from esa5.microchip.iphmx.com ([216.71.150.166]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihc7P-0006ig-Dk for linux-arm-kernel@lists.infradead.org; Wed, 18 Dec 2019 16:24:14 +0000 Received-SPF: Pass (esa5.microchip.iphmx.com: domain of Eugen.Hristev@microchip.com designates 198.175.253.82 as permitted sender) identity=mailfrom; client-ip=198.175.253.82; receiver=esa5.microchip.iphmx.com; envelope-from="Eugen.Hristev@microchip.com"; x-sender="Eugen.Hristev@microchip.com"; x-conformance=spf_only; x-record-type="v=spf1"; x-record-text="v=spf1 mx a:ushub1.microchip.com a:smtpout.microchip.com -exists:%{i}.spf.microchip.iphmx.com include:servers.mcsv.net include:mktomail.com include:spf.protection.outlook.com ~all" Received-SPF: None (esa5.microchip.iphmx.com: no sender authenticity information available from domain of postmaster@email.microchip.com) identity=helo; client-ip=198.175.253.82; receiver=esa5.microchip.iphmx.com; envelope-from="Eugen.Hristev@microchip.com"; x-sender="postmaster@email.microchip.com"; x-conformance=spf_only Authentication-Results: esa5.microchip.iphmx.com; spf=Pass smtp.mailfrom=Eugen.Hristev@microchip.com; spf=None smtp.helo=postmaster@email.microchip.com; dkim=pass (signature verified) header.i=@microchiptechnology.onmicrosoft.com; dmarc=pass (p=none dis=none) d=microchip.com IronPort-SDR: 54t8XRM829Q2q/CWuqD/LrgHY2/4F1miElyj+WbnYMSQTkqDteWZLdC9VsgsmdD2lLDoS/bfq/ wkUbM4GZeXTvdFW0YGmCnaRee/JgoBx7dhDJ8qjEBYHihfpi+XwMcp9nvpCpILn0T8RTf/wOfT ZgBFRhHOwBaGPi5MT0pGBo+kecAeIbrrGsLiwNQDKJ9MggGGSinoqDVOEifgOilWn682xgucjj HuXy6K6pTB+unqVg/QdGYUz7fbcf4uyS2N6VrPwUj+QW2moX0b78IdPI7V3h2YqXQp7WqdQPiF STM= X-IronPort-AV: E=Sophos;i="5.69,330,1571727600"; d="scan'208";a="59426831" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 18 Dec 2019 09:24:06 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 18 Dec 2019 09:24:03 -0700 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (10.10.215.89) by email.microchip.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5 via Frontend Transport; Wed, 18 Dec 2019 09:24:03 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ofKReA+c+mO8H6rxGzY9S5ANOykX+6h5qyZgQnatylGxsv/1lvOHtQuyGcOTJTQMwQfzsnymTlAGn5+6E+BZGWOcxjIHSKzRRkBSeTd5eSnuIXiUOWSQfVYR3LjM4WRao3WLNMxn+npxIzsnYzGa91jwkAfaAnh7FmLDb1SaUS7QBLWgNktpZj0XZeUDsPkK+ERpmQT4ZaMnaVbNsJ6i/5o3U0okAcwFL94EnqHsI+cUNcIA9b2R/JmJTyCjA7xYCCMtLqsaKgpcXh3Gj8kau0NanlCpwVTe27EJ7LAk+V1nBBymx/ImF6Z1ixza2xBKmd+aEid+hEFEtSC1qM0/bQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=McsuxWfwAiDTwpWDkwexX3EQK7P5A7czExPwE95bd/k=; b=hdozcbTDDTTaDss4rCRZVgVtblJnQiWSqdO026MOGQZr5PUHqTnRZgOU2WsDLKjauGYFkbg3h1RzGacTW8ciPnUaLySk7jwoV8N/VwSnRVT7zrFZJtJyPUKY5hr+Bsn8SD4vTTHDBqtGp/KfPMGGb+D9zXiYFCD9CG4N2JUdW1TAEqsdYTblMFSACaZxYGTvaGfvUIFVSitHA2HJfG9yRHbXM+Rnv1d5I1ZTL1jIB9fi8RmuIa/5W9qUrum/DHP17oIjM28rW5Bawp5H60vIhglu+zoeOWnjdJNi47uIjjh45oQCStrmhOSWkYij1H0OxT1y8PEiLnp95OCna29HEg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microchip.com; dmarc=pass action=none header.from=microchip.com; dkim=pass header.d=microchip.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microchiptechnology.onmicrosoft.com; s=selector2-microchiptechnology-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=McsuxWfwAiDTwpWDkwexX3EQK7P5A7czExPwE95bd/k=; b=WfbfkTHosP+S2fneiaHS/bZtoa/uOtBS08IxzmLCrUoJy6efVg9b/7xCVFw05j78IBmZIOXcNI6cDeFmLtL87/Zh7CsFs8XaaT257Yeihl+nDJrYvZIbcd1fRBcXM+gqIW2jjAKzkBQjoAjvJ2FyGyopKXljLcI/h/elmMPDfZI= Received: from DM5PR11MB1242.namprd11.prod.outlook.com (10.168.108.8) by DM5PR11MB1769.namprd11.prod.outlook.com (10.175.87.19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2538.19; Wed, 18 Dec 2019 16:24:03 +0000 Received: from DM5PR11MB1242.namprd11.prod.outlook.com ([fe80::9039:e0e8:9032:20c1]) by DM5PR11MB1242.namprd11.prod.outlook.com ([fe80::9039:e0e8:9032:20c1%12]) with mapi id 15.20.2559.012; Wed, 18 Dec 2019 16:24:03 +0000 From: To: , , Subject: [PATCH 07/10] iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode Thread-Topic: [PATCH 07/10] iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode Thread-Index: AQHVtb+PmhwCEX7J1UOzKiW28GxaNQ== Date: Wed, 18 Dec 2019 16:24:02 +0000 Message-ID: <1576686157-11939-8-git-send-email-eugen.hristev@microchip.com> References: <1576686157-11939-1-git-send-email-eugen.hristev@microchip.com> In-Reply-To: <1576686157-11939-1-git-send-email-eugen.hristev@microchip.com> Accept-Language: en-US, ro-RO Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 52e8501c-9637-4c66-d7fd-08d783d6b289 x-ms-traffictypediagnostic: DM5PR11MB1769: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; x-forefront-prvs: 0255DF69B9 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(366004)(396003)(39860400002)(136003)(346002)(376002)(199004)(189003)(66476007)(66946007)(66446008)(76116006)(91956017)(2616005)(64756008)(66556008)(86362001)(186003)(316002)(110136005)(8676002)(54906003)(8936002)(71200400001)(81166006)(478600001)(2906002)(6512007)(26005)(81156014)(36756003)(4326008)(6506007)(5660300002)(6486002)(107886003); DIR:OUT; SFP:1101; SCL:1; SRVR:DM5PR11MB1769; H:DM5PR11MB1242.namprd11.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: Udr616FaIBeDmaSkpQNCsm7NPPt9RRG+WunS1+bI5x6eTtAsAyBQMqBEXxEFz7Un6h55ouGvPRwxdl9MYyE3+/i3V3Dd7WnZSzLjkaxyfgJh5Aey68AOJV/N4f8delzWXm5FYahECd1+y4hV17fM/vp71D5w9+FSBWfjHWAJ117D/xEeMm+/juP0hevnZPbkVQDxYN8jiiHKaKF8UwxA7BhISrxmtZwfRgxNwasAj2ZCRu8K58A3n2tDfv2EhqtD9NKlPu4QdrKzlHm5y2MTKb/Sd/9YwewL7pt9iW+E4qND4nPWhgxVAOtyU8T3QYIFmH0F7OBD1k7cbeC0hT8Kwv8kTnlpJCcJDNyXyX1n09fUtlc3WDAiQfdPxQ36wsc3XHvopIudjw2Y+0JhuPL9Fenwz72oQaQWC5pbk9ZUyASp5Y1VUjeUl316fz3lY5zT MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 52e8501c-9637-4c66-d7fd-08d783d6b289 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2019 16:24:02.1770 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: VL92VuJQSbOkmkVR5Or1deDyjvDpthl4dMu0WUQS9Oj0hk5/px4q1mAORgPOxHQ6lBYPrBUDuMicr8wO6IwHsJ29vJ+jPlFiyugDCsJBqfg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1769 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191218_082411_532379_31DD2325 X-CRM114-Status: UNSURE ( 8.00 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, a.zummo@towertech.it, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Ludovic.Desroches@microchip.com, Eugen.Hristev@microchip.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Eugen Hristev The differential channels require writing the channel offset register (COR). Otherwise they do not work in differential mode. The configuration of COR is missing in triggered mode. Signed-off-by: Eugen Hristev --- drivers/iio/adc/at91-sama5d2_adc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index a6b4dff..ccffa48 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -900,6 +900,7 @@ static int at91_adc_buffer_postenable(struct iio_dev *indio) for_each_set_bit(bit, indio->active_scan_mask, indio->num_channels) { struct iio_chan_spec const *chan = at91_adc_chan_get(indio, bit); + u32 cor; if (!chan) continue; @@ -908,6 +909,17 @@ static int at91_adc_buffer_postenable(struct iio_dev *indio) chan->type == IIO_PRESSURE) continue; + cor = at91_adc_readl(st, AT91_SAMA5D2_COR); + + if (chan->differential) + cor |= (BIT(chan->channel) | BIT(chan->channel2)) << + AT91_SAMA5D2_COR_DIFF_OFFSET; + else + cor &= ~(BIT(chan->channel) << + AT91_SAMA5D2_COR_DIFF_OFFSET); + + at91_adc_writel(st, AT91_SAMA5D2_COR, cor); + at91_adc_writel(st, AT91_SAMA5D2_CHER, BIT(chan->channel)); if (use_irq) { at91_adc_writel(st, AT91_SAMA5D2_IER, -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel