From patchwork Fri Dec 8 14:49:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 10102701 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DDDD860360 for ; Fri, 8 Dec 2017 14:53:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A1ED82834A for ; Fri, 8 Dec 2017 14:53:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 966DA28AB2; Fri, 8 Dec 2017 14:53:07 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 21B0E2834A for ; Fri, 8 Dec 2017 14:53:07 +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=PCrYm+F1FLDNctnaqhPb8DDjiMgSHSl4eh3RftmkIiI=; b=Iv46wCWrNsj6No cG8Dit4vjwqbB9ndIEVU67NFYPfUiWOYJ4op4ERDWPFe+R67nZGPzvovh3aScBaPjHsPEvFFJMiiz G74qC9M535N427FiXjdrq8pJx2qAIthYp7VAuDERcpbdtKVwdPp42TkhLOwcBb/FM7tGMuE0RrwfJ ZUOtjtjy1GYzonc4p15xi9E7dCcUqQF4biIMmWSdpk7iDOorxYzskDW83vwQWI1jmQpsOePFcJk7E ueIJs0vDkSSeHtJGQ+yhz/2z533tY8HnbXy/gON3lLrA2ByipoSv4c9HLDF9J+A9BMBVmS13z4zJA VqhwuDJul66b3Fhb4nyw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1eNK1S-00041C-AG; Fri, 08 Dec 2017 14:53:06 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1eNJzQ-0001yp-Ox for linux-arm-kernel@lists.infradead.org; Fri, 08 Dec 2017 14:51:05 +0000 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vB8EnjbW020794; Fri, 8 Dec 2017 15:50:34 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2eqn7r2ank-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 08 Dec 2017 15:50:34 +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 949613A; Fri, 8 Dec 2017 14:50:33 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6AD5A50D2; Fri, 8 Dec 2017 14:50:33 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.352.0; Fri, 8 Dec 2017 15:50:33 +0100 Received: from localhost (10.201.23.162) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.352.0; Fri, 8 Dec 2017 15:50:32 +0100 From: Arnaud Pouliquen To: Rob Herring , Mark Rutland , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown Subject: [PATCH v7 11/13] IIO: consumer: allow to set buffer sizes Date: Fri, 8 Dec 2017 15:49:24 +0100 Message-ID: <1512744566-13233-12-git-send-email-arnaud.pouliquen@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1512744566-13233-1-git-send-email-arnaud.pouliquen@st.com> References: <1512744566-13233-1-git-send-email-arnaud.pouliquen@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.162] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-08_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171208_065101_398857_1A8DEACF X-CRM114-Status: UNSURE ( 9.56 ) X-CRM114-Notice: Please train this message. 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: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Alexandre Torgue , linux-iio@vger.kernel.org, arnaud.pouliquen@st.com, Maxime Coquelin , 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 Add iio consumer API to set buffer size and watermark according to sysfs API. Signed-off-by: Arnaud Pouliquen Reviewed-by: Jonathan Cameron --- drivers/iio/buffer/industrialio-buffer-cb.c | 11 +++++++++++ include/linux/iio/consumer.h | 11 +++++++++++ 2 files changed, 22 insertions(+) diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c index 4847534..ea63c83 100644 --- a/drivers/iio/buffer/industrialio-buffer-cb.c +++ b/drivers/iio/buffer/industrialio-buffer-cb.c @@ -104,6 +104,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, } EXPORT_SYMBOL_GPL(iio_channel_get_all_cb); +int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buff, + size_t watermark) +{ + if (!watermark) + return -EINVAL; + cb_buff->buffer.watermark = watermark; + + return 0; +} +EXPORT_SYMBOL_GPL(iio_channel_cb_set_buffer_watermark); + int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff) { return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer, diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 2017f35..9887f4f 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -134,6 +134,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, void *private), void *private); /** + * iio_channel_cb_set_buffer_watermark() - set the buffer watermark. + * @cb_buffer: The callback buffer from whom we want the channel + * information. + * @watermark: buffer watermark in bytes. + * + * This function allows to configure the buffer watermark. + */ +int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buffer, + size_t watermark); + +/** * iio_channel_release_all_cb() - release and unregister the callback. * @cb_buffer: The callback buffer that was allocated. */