From patchwork Mon Jan 27 10:57:21 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Miclaus, Antoniu" X-Patchwork-Id: 13951231 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B1581FECBF; Mon, 27 Jan 2025 10:57:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737975472; cv=none; b=YiMo2Yq7fYfR0KlvviZT5FCU642fJNwNTxgLsyPZva57pe21YI5A/R/mkhAJfhcq7W/6zekNTXC7SYIF2gHTR1OOEN6l4tUsp7LOnZOI17+ntS3LHLdpx6L4eH+mtgKFWrzZ8cU4KLGSCKcoiEEYywRIEaposCvC6SxwruX77CY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737975472; c=relaxed/simple; bh=GreuRnC7q1+2/YygIXhDFmp0SHZJcOM2etjHHHNpl+g=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MJWxXPC92AM/6K6Xe1VDGZUF1SBNdR3oqYYtVbOh/ufTwdnKiAVZAzEfc/NxzBV/YDkRyT7FdhQgsrfPDqOOejd/biKYCBOi2wYz/9ZUaa7P7S73xsDVG+LGBp9xcxlw3+7cWpMSmrDvJL30XtvBSxMMBhW/q0vwdQUYEfcQ82c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b=TFvK6ocS; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b="TFvK6ocS" Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 50R9FZoh005758; Mon, 27 Jan 2025 05:57:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=DKIM; bh=6e59i 6gPeYkVY/NZM76LOLPvhxnJdL8VnrzEoiq9h7k=; b=TFvK6ocSeTUaHLlsAQTfq u5TzTpZd0DAGTbRpH2NNsOcxExJ0oodVAC7sBREWIo7+lw70K47K0iJFnYeS4qUA UFCwO83Tou5Oegi9osSlK6+x1QLnyQYzSp4xDKy8tJdLW4CqebtMRAXmy+77Yyzg nY81+qx7/Ij6ehr2XwFlI9UTiDmoEddKWDZ6S+l0Srs0VpAHi/AvQcqZRGZ2dgLs 6dARPaFqYlj8yyD/dvm1jKGcsM3vDpRp5uU+y++Xny+aFRZfilVxqpMeRlregfp8 lHSTSL2uk7SqjOeOJB92fe1S7opNEMMI6TIklywbs0co5wjUfQynN9xd5f5vSuCD A== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 44e2n11bga-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Jan 2025 05:57:48 -0500 (EST) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 50RAvlbF001775 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 27 Jan 2025 05:57:47 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 27 Jan 2025 05:57:46 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 27 Jan 2025 05:57:46 -0500 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.165]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 50RAvUT9018078; Mon, 27 Jan 2025 05:57:39 -0500 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus , David Lechner Subject: [PATCH v11 3/8] iio: backend: add API for oversampling Date: Mon, 27 Jan 2025 12:57:21 +0200 Message-ID: <20250127105726.6314-4-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250127105726.6314-1-antoniu.miclaus@analog.com> References: <20250127105726.6314-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: pcVK8598lZkDB64_59dD6gYDXGTOLWoX X-Proofpoint-ORIG-GUID: pcVK8598lZkDB64_59dD6gYDXGTOLWoX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-27_04,2025-01-27_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 clxscore=1015 mlxlogscore=999 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501270088 Add backend support for setting oversampling ratio. Reviewed-by: David Lechner Signed-off-by: Antoniu Miclaus --- no changes in v11. drivers/iio/industrialio-backend.c | 15 +++++++++++++++ include/linux/iio/backend.h | 5 +++++ 2 files changed, 20 insertions(+) diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index 2088afa7a55c..d4ad36f54090 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -681,6 +681,21 @@ int iio_backend_data_size_set(struct iio_backend *back, unsigned int size) } EXPORT_SYMBOL_NS_GPL(iio_backend_data_size_set, "IIO_BACKEND"); +/** + * iio_backend_oversampling_ratio_set - set the oversampling ratio + * @back: Backend device + * @ratio: The oversampling ratio - value 1 corresponds to no oversampling. + * + * Return: + * 0 on success, negative error number on failure. + */ +int iio_backend_oversampling_ratio_set(struct iio_backend *back, + unsigned int ratio) +{ + return iio_backend_op_call(back, oversampling_ratio_set, ratio); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_oversampling_ratio_set, "IIO_BACKEND"); + /** * iio_backend_extend_chan_spec - Extend an IIO channel * @back: Backend device diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 9ae861a21472..e45b7dfbec35 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -96,6 +96,7 @@ enum iio_backend_interface_type { * @ext_info_get: Extended info getter. * @interface_type_get: Interface type. * @data_size_set: Data size. + * @oversampling_ratio_set: Set Oversampling ratio. * @read_raw: Read a channel attribute from a backend device * @debugfs_print_chan_status: Print channel status into a buffer. * @debugfs_reg_access: Read or write register value of backend. @@ -139,6 +140,8 @@ struct iio_backend_ops { int (*interface_type_get)(struct iio_backend *back, enum iio_backend_interface_type *type); int (*data_size_set)(struct iio_backend *back, unsigned int size); + int (*oversampling_ratio_set)(struct iio_backend *back, + unsigned int ratio); int (*read_raw)(struct iio_backend *back, struct iio_chan_spec const *chan, int *val, int *val2, long mask); @@ -200,6 +203,8 @@ ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private, int iio_backend_interface_type_get(struct iio_backend *back, enum iio_backend_interface_type *type); int iio_backend_data_size_set(struct iio_backend *back, unsigned int size); +int iio_backend_oversampling_ratio_set(struct iio_backend *back, + unsigned int ratio); int iio_backend_read_raw(struct iio_backend *back, struct iio_chan_spec const *chan, int *val, int *val2, long mask);