From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 038B9C4360F for ; Fri, 5 Apr 2019 09:41:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D52C921850 for ; Fri, 5 Apr 2019 09:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730626AbfDEJlg (ORCPT ); Fri, 5 Apr 2019 05:41:36 -0400 Received: from retiisi.org.uk ([95.216.213.190]:40192 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730237AbfDEJla (ORCPT ); Fri, 5 Apr 2019 05:41:30 -0400 Received: from lanttu.localdomain (unknown [IPv6:2a01:4f9:c010:4572::e1:1001]) by hillosipuli.retiisi.org.uk (Postfix) with ESMTP id 8A240634C86; Fri, 5 Apr 2019 12:40:45 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, niklas.soderlund@ragnatech.se, laurent.pinchart@ideasonboard.com Subject: [PATCH 4/9] v4l2-async: Add v4l2_async_notifier_add_fwnode_remote_subdev Date: Fri, 5 Apr 2019 12:41:22 +0300 Message-Id: <20190405094127.18975-6-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190405094127.18975-1-sakari.ailus@linux.intel.com> References: <20190405094127.18975-1-sakari.ailus@linux.intel.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org v4l2_async_notifier_add_fwnode_remote_subdev is a convenience function for parsing information on V4L2 fwnode subdevs. Signed-off-by: Sakari Ailus --- drivers/media/v4l2-core/v4l2-async.c | 23 +++++++++++++++++++++++ include/media/v4l2-async.h | 25 +++++++++++++++++++++++++ 2 files changed, 48 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index dc4e83b4f6ba..2ea8afbcbf8f 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -609,6 +609,29 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier, } EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_subdev); +int +v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif, + struct fwnode_handle *endpoint, + struct v4l2_async_subdev *asd) +{ + struct fwnode_handle *remote_ep; + int ret; + + remote_ep = fwnode_graph_get_remote_endpoint(endpoint); + if (!remote_ep) + return -ENOTCONN; + + asd->match_type = V4L2_ASYNC_MATCH_FWNODE; + asd->match.fwnode = remote_ep; + + ret = v4l2_async_notifier_add_subdev(notif, asd); + if (ret) + fwnode_handle_put(remote_ep); + + return ret; +} +EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_remote_subdev); + struct v4l2_async_subdev * v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier, int adapter_id, unsigned short address, diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index b9141ffa188a..55ce3c1672a4 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -185,6 +185,31 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier, unsigned int asd_struct_size); /** + * v4l2_async_notifier_add_fwnode_remote_subdev - Allocate and add a fwnode + * remote async subdev to the + * notifier's master asd_list. + * + * @notif: pointer to &struct v4l2_async_notifier + * @endpoint: local endpoint the remote sub-device to be matched + * @asd: Async sub-device struct allocated by the caller. The &struct + * v4l2_async_subdev shall be the first member of the driver's async + * sub-device struct, i.e. both begin at the same memory address. + * + * Gets the remote endpoint of a given local endpoint, set it up for fwnode + * matching and add the async sub-device to the notifier's @asd_list. The + * function also gets a reference of the fwnode which is released later at + * notifier cleanup time. + * + * This is just like @v4l2_async_notifier_add_fwnode_subdev, but with the + * exception that the fwnode refers to a local endpoint, not the remote one, and + * the function relies on the caller to allocate the async sub-device struct. + */ +int +v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif, + struct fwnode_handle *endpoint, + struct v4l2_async_subdev *asd); + +/** * v4l2_async_notifier_add_i2c_subdev - Allocate and add an i2c async * subdev to the notifier's master asd_list. * -- 2.11.0