From patchwork Fri Feb 14 13:19:49 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoniu Miclaus X-Patchwork-Id: 13974906 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 445B726560A; Fri, 14 Feb 2025 13:20:25 +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=1739539227; cv=none; b=Xuef2kNi6+Fr3QEoz03pCLmP8lSQpOPleUJ16DpWd+LAkAkI5VE14NvNP79rIIqJDpAo5Ayd57RxkV3zWBM2IXSbJqgd/kRodmwvXvEdkMIuLGLb1a9U+6/lfeXArOgzZBA5P2jthSHi1Ah7dLpQktzzz8+Yr6w0Y/1hjOvMEoQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739539227; c=relaxed/simple; bh=A6nmidYyBO10hthF0jfNWgebsPOdCl9XcVrc+GsqKXA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=X1NKMeatB9ixuGaZxODU3dlNWhffp7lRwSawQs6mKbepJeYs6HVPysCa5AjGk2bKEkHSTOWHggp4+bmD+Sjehq0JNP6KoKkeocbdQIzSn6WS77mEAE+X3IVEoSRpv09p5vR8f7Z1FQbXcHAOJ8lGB871MmnGW4Q57F3fcqp9dYQ= 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=XxK1In2g; 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="XxK1In2g" 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 51EDB7jl027738; Fri, 14 Feb 2025 08:20:15 -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=jCEQJ xXGV020vphNByeLaToTzvr3c/trYIsUl1IBkvI=; b=XxK1In2gnIHcZSrOYFB6m WRoi8Gr/X1fWImIshJeU9tp2RG97tIoyLJsLNhdj068QnPC2FrHmZ1WhXQLd5T+e nzMoT3jb/lInNMsDvesa9gluu2UlQuRPr8lWEUpGiKBWzqEcrsGKS1BV8Sh+Mdco zcRxujuIGNL1BriYlgS+PKHp1ofQ01SsB9Y5NPurwVyTQxjXB/KYfdqFN9UZvx3d XxLwbSwalTCnPhMzevzomiiyACncHOSYtEB/lgWfb48OcjU9WTY89UZjEtYFMA3y GukcxxkOjJSmbDi2sWBbcPXr+LLk8sopejvc2ZgGMRU3NygdaMcL8jAUrHxjSrxa A== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 44t1nm96nu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2025 08:20:15 -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 51EDKEjh022823 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 14 Feb 2025 08:20:14 -0500 Received: from ASHBCASHYB4.ad.analog.com (10.64.17.132) 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; Fri, 14 Feb 2025 08:20:14 -0500 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBCASHYB4.ad.analog.com (10.64.17.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Fri, 14 Feb 2025 08:20:13 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Fri, 14 Feb 2025 08:20:13 -0500 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.172]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 51EDJuUT020604; Fri, 14 Feb 2025 08:20:06 -0500 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus , David Lechner Subject: [PATCH v13 3/9] iio: backend: add API for oversampling Date: Fri, 14 Feb 2025 15:19:49 +0200 Message-ID: <20250214131955.31973-4-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250214131955.31973-1-antoniu.miclaus@analog.com> References: <20250214131955.31973-1-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-Authority-Analysis: v=2.4 cv=Ysr1R5YX c=1 sm=1 tr=0 ts=67af430f cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=T2h4t0Lz3GQA:10 a=IpJZQVW2AAAA:8 a=gAnH3GRIAAAA:8 a=SEKP2kRsAAgZN29P1c8A:9 a=IawgGOuG5U0WyFbmm1f5:22 a=oVHKYsEdi7-vN-J5QA_j:22 X-Proofpoint-GUID: AUuB8RlNNlGMkwv6p9flrtlUTQgQnLYP X-Proofpoint-ORIG-GUID: AUuB8RlNNlGMkwv6p9flrtlUTQgQnLYP 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=2025-02-14_05,2025-02-13_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 adultscore=0 mlxlogscore=999 spamscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502140097 Add backend support for setting oversampling ratio. Reviewed-by: David Lechner Signed-off-by: Antoniu Miclaus --- no changes in v13. 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);