From patchwork Thu Feb 4 08:45:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 377121 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 3EC54C433DB for ; Thu, 4 Feb 2021 08:51:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7C1D614A5 for ; Thu, 4 Feb 2021 08:51:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235094AbhBDIq4 (ORCPT ); Thu, 4 Feb 2021 03:46:56 -0500 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:36058 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234727AbhBDIqu (ORCPT ); Thu, 4 Feb 2021 03:46:50 -0500 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1148gZBB023674; Thu, 4 Feb 2021 09:46:03 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=eL8fdw48NUXLNEyAuslWK3wA6wxsb+gv6VUFyukuFOo=; b=bntdO/7j+m8KlpUjcc0V2khV9EjN3MlNedJjUne25ZumGJ0GSisZROxnoUjMP+al4fZj uAh0XaUKq5roOc/DIf4zKHrhzW7tVjJk/yBLgQmw7HVmop7/mO90oT+bl+ZLK+4lF25F lOSHrJCgvHKnttvljT4RUv261+rJJwFT9kj2Kbl8OQ3domXuaXa779e6AwpuiaS2Oqwi IZWEmdoCnV8tY/DIHNyXc6uArkED0pEHqYsXsgIrJXNg60g5lUY71NtSPyu8q9KhNMn/ WLf8ndxKIA8KqHZI9hoCUNRpRF0l9w1AE5R1L7CCjh+4kIS9pr3yJJOpj2DgdxDPZvUV 0g== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 36ey7h7fw3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 04 Feb 2021 09:46:03 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 51C9710002A; Thu, 4 Feb 2021 09:46:03 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 42E2522AE46; Thu, 4 Feb 2021 09:46:03 +0100 (CET) Received: from localhost (10.75.127.51) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 4 Feb 2021 09:46:02 +0100 From: Arnaud Pouliquen To: Bjorn Andersson , Ohad Ben-Cohen , Mathieu Poirier , Andy Gross CC: , , , , Subject: [PATCH v3 03/15] rpmsg: char: export eptdev create an destroy functions Date: Thu, 4 Feb 2021 09:45:22 +0100 Message-ID: <20210204084534.10516-4-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210204084534.10516-1-arnaud.pouliquen@foss.st.com> References: <20210204084534.10516-1-arnaud.pouliquen@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.51] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.737 definitions=2021-02-04_03:2021-02-04,2021-02-04 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org To prepare the split code related to the control and the endpoint devices in separate files: - suppress the dependency with the rpmsg_ctrldev struct, - rename and export the functions in rpmsg_char.h. Suggested-by: Mathieu Poirier Signed-off-by: Arnaud Pouliquen --- drivers/rpmsg/rpmsg_char.c | 22 ++++++++++------ drivers/rpmsg/rpmsg_char.h | 51 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 7 deletions(-) create mode 100644 drivers/rpmsg/rpmsg_char.h diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index 9e33b53bbf56..78a6d19fdf82 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* + * Copyright (C) 2021, STMicroelectronics * Copyright (c) 2016, Linaro Ltd. * Copyright (c) 2012, Michal Simek * Copyright (c) 2012, PetaLogix @@ -22,6 +23,7 @@ #include #include +#include "rpmsg_char.h" #include "rpmsg_internal.h" #define RPMSG_DEV_MAX (MINORMASK + 1) @@ -78,7 +80,7 @@ struct rpmsg_eptdev { wait_queue_head_t readq; }; -static int rpmsg_eptdev_destroy(struct device *dev, void *data) +static int rpmsg_eptdev_destroy(struct device *dev) { struct rpmsg_eptdev *eptdev = dev_to_eptdev(dev); @@ -277,7 +279,7 @@ static long rpmsg_eptdev_ioctl(struct file *fp, unsigned int cmd, if (cmd != RPMSG_DESTROY_EPT_IOCTL) return -EINVAL; - return rpmsg_eptdev_destroy(&eptdev->dev, NULL); + return rpmsg_eptdev_destroy(&eptdev->dev); } static const struct file_operations rpmsg_eptdev_fops = { @@ -336,10 +338,15 @@ static void rpmsg_eptdev_release_device(struct device *dev) kfree(eptdev); } -static int rpmsg_eptdev_create(struct rpmsg_ctrldev *ctrldev, +int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data) +{ + return rpmsg_eptdev_destroy(dev); +} +EXPORT_SYMBOL(rpmsg_chrdev_eptdev_destroy); + +int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent, struct rpmsg_channel_info chinfo) { - struct rpmsg_device *rpdev = ctrldev->rpdev; struct rpmsg_eptdev *eptdev; struct device *dev; int ret; @@ -359,7 +366,7 @@ static int rpmsg_eptdev_create(struct rpmsg_ctrldev *ctrldev, device_initialize(dev); dev->class = rpmsg_class; - dev->parent = &ctrldev->dev; + dev->parent = parent; dev->groups = rpmsg_eptdev_groups; dev_set_drvdata(dev, eptdev); @@ -402,6 +409,7 @@ static int rpmsg_eptdev_create(struct rpmsg_ctrldev *ctrldev, return ret; } +EXPORT_SYMBOL(rpmsg_chrdev_create_eptdev); static int rpmsg_ctrldev_open(struct inode *inode, struct file *filp) { @@ -441,7 +449,7 @@ static long rpmsg_ctrldev_ioctl(struct file *fp, unsigned int cmd, chinfo.src = eptinfo.src; chinfo.dst = eptinfo.dst; - return rpmsg_eptdev_create(ctrldev, chinfo); + return rpmsg_chrdev_create_eptdev(ctrldev->rpdev, &ctrldev->dev, chinfo); }; static const struct file_operations rpmsg_ctrldev_fops = { @@ -527,7 +535,7 @@ static void rpmsg_chrdev_remove(struct rpmsg_device *rpdev) int ret; /* Destroy all endpoints */ - ret = device_for_each_child(&ctrldev->dev, NULL, rpmsg_eptdev_destroy); + ret = device_for_each_child(&ctrldev->dev, NULL, rpmsg_chrdev_eptdev_destroy); if (ret) dev_warn(&rpdev->dev, "failed to nuke endpoints: %d\n", ret); diff --git a/drivers/rpmsg/rpmsg_char.h b/drivers/rpmsg/rpmsg_char.h new file mode 100644 index 000000000000..0feb3ea9445c --- /dev/null +++ b/drivers/rpmsg/rpmsg_char.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Copyright (C) STMicroelectronics 2021. + */ + +#ifndef __RPMSG_CHRDEV_H__ +#define __RPMSG_CHRDEV_H__ + +#if IS_ENABLED(CONFIG_RPMSG_CHAR) +/** + * rpmsg_chrdev_create_eptdev() - register char device based on an endpoint + * @rpdev: prepared rpdev to be used for creating endpoints + * @parent: parent device + * @chinfo: assiated endpoint channel information. + * + * This function create a new rpmsg char endpoint device to instantiate a new + * endpoint based on chinfo information. + */ +int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent, + struct rpmsg_channel_info chinfo); + +/** + * rpmsg_chrdev_eptdev_destroy() - destroy created char device + * @data: parent device + * @chinfo: assiated endpoint channel information. + * + * This function create a new rpmsg char endpoint device to instantiate a new + * endpoint based on chinfo information. + */ +int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data); + +#else /*IS_ENABLED(CONFIG_RPMSG_CHAR) */ + +static inline int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, + struct device *parent, + struct rpmsg_channel_info chinfo) +{ + return -EINVAL; +} + +static inline int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data) +{ + /* This shouldn't be possible */ + WARN_ON(1); + + return 0; +} + +#endif /*IS_ENABLED(CONFIG_RPMSG_CHAR) */ + +#endif /*__RPMSG_CHRDEV_H__ */