From patchwork Fri Jan 22 16:25:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 12040049 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 1055EC43331 for ; Fri, 22 Jan 2021 17:21:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E82E723A79 for ; Fri, 22 Jan 2021 17:21:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729465AbhAVQ4A (ORCPT ); Fri, 22 Jan 2021 11:56:00 -0500 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:55924 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728808AbhAVQXc (ORCPT ); Fri, 22 Jan 2021 11:23:32 -0500 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 10MG0n1B025802; Fri, 22 Jan 2021 11:22:40 -0500 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com with ESMTP id 3668rbtndj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 22 Jan 2021 11:22:40 -0500 Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 10MGMckX058199 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 22 Jan 2021 11:22:38 -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 15.2.721.2; Fri, 22 Jan 2021 11:22:37 -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 15.2.721.2 via Frontend Transport; Fri, 22 Jan 2021 11:22:37 -0500 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 10MGMOCu016711; Fri, 22 Jan 2021 11:22:36 -0500 From: Alexandru Ardelean To: , CC: , , , , , Alexandru Ardelean Subject: [PATCH v2 08/12][RESEND] iio: buffer: add helper to get the IIO device to which a buffer belongs Date: Fri, 22 Jan 2021 18:25:25 +0200 Message-ID: <20210122162529.84978-9-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210122162529.84978-1-alexandru.ardelean@analog.com> References: <20210122162529.84978-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-22_11:2021-01-22,2021-01-22 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 malwarescore=0 impostorscore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 adultscore=0 mlxlogscore=886 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101220088 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This is useful for drivers that may have a reference to an IIO buffer, to be able to get a reference back to the IIO device. Signed-off-by: Alexandru Ardelean --- drivers/iio/industrialio-buffer.c | 14 ++++++++++++++ include/linux/iio/buffer.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 8470921cf2fa..a2dd30567072 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -1778,6 +1778,20 @@ void iio_buffer_put(struct iio_buffer *buffer) } EXPORT_SYMBOL_GPL(iio_buffer_put); +/** + * iio_buffer_get_iio_dev - Get the IIO device to which this buffer belongs to + * @buffer: The buffer for which to retrieve the IIO device + * + * This function retrieves the IIO device to which this IIO buffer is attached + * to. Given that an IIO device may have multiple IIO buffers, it's useful + * for some drivers to obtain a reference back to the IIO device. + */ +struct iio_dev *iio_buffer_get_iio_dev(struct iio_buffer *buffer) +{ + return buffer->indio_dev; +} +EXPORT_SYMBOL_GPL(iio_buffer_get_iio_dev); + /** * iio_device_attach_buffer - Attach a buffer to a IIO device * @indio_dev: The device the buffer should be attached to diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index 8febc23f5f26..b27d8c81f32c 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -11,6 +11,8 @@ struct iio_buffer; +struct iio_dev *iio_buffer_get_iio_dev(struct iio_buffer *buffer); + int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); /**