From patchwork Tue May 16 09:54:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13242854 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D838C77B7A for ; Tue, 16 May 2023 09:56:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232220AbjEPJ4M (ORCPT ); Tue, 16 May 2023 05:56:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232211AbjEPJ4J (ORCPT ); Tue, 16 May 2023 05:56:09 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D9261713 for ; Tue, 16 May 2023 02:56:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1684230967; x=1715766967; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FxRb16v3XUpwV0GLek5lbrrXvsFnh8Dq4KeBJUE6x4s=; b=gBdcyuyBiRV43ax8ZxpmkmplpMR0aSIwyByVFOGy5sn/EkAOhvN9XGdu WzfSDGcK18vSJsGxyhGvr4ld9sslaGN46oKsVkbbwO1ND1e662zpvfOum meWp2cuT6B3ab35omihJMIAsKJApNLmqZLg+NYesys5NN89HUM80etYXW 9+uBbigpJLCDeSZBRsyGC4YO0d3I1GL7k9ZQ+ovmClIRLydyglHgKn8Ox BCnhf2tEXZaUSwXeGktWjmVn26r4r+RPZGrqKQHN1UoUu+XFBLRUMUwHg 27PHtiX3Vd9r++CfUUxYyjmek9j3fwanobV62qrhpYhTbRXF12MXuUf3t Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10711"; a="353715239" X-IronPort-AV: E=Sophos;i="5.99,278,1677571200"; d="scan'208";a="353715239" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2023 02:55:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10711"; a="678791321" X-IronPort-AV: E=Sophos;i="5.99,278,1677571200"; d="scan'208";a="678791321" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2023 02:55:38 -0700 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by kekkonen.fi.intel.com (Postfix) with ESMTP id D6348120CAC; Tue, 16 May 2023 12:55:35 +0300 (EEST) Received: from sailus by punajuuri.localdomain with local (Exim 4.94.2) (envelope-from ) id 1pyrOx-002Z9d-S0; Tue, 16 May 2023 12:55:27 +0300 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, Philipp Zabel , hverkuil@xs4all.nl, Francesco Dolcini , aishwarya.kothari@toradex.com, Robert Foss , Todor Tomov , Hyun Kwon , bingbu.cao@intel.com Subject: [PATCH v2 01/31] media: v4l: async: Drop v4l2_async_nf_parse_fwnode_endpoints() Date: Tue, 16 May 2023 12:54:47 +0300 Message-Id: <20230516095517.611711-2-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230516095517.611711-1-sakari.ailus@linux.intel.com> References: <20230516095517.611711-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Jacopo Mondi The v4l2_async_nf_parse_fwnode_endpoints() function, part of v4l2-fwnode.c, was a helper meant to register one async sub-dev for each fwnode endpoint of a device. The function is marked as deprecated in the documentation and is actually not used anywhere anymore. Drop it and remove the helper function v4l2_async_nf_fwnode_parse_endpoint() from v4l2-fwnode.c. This change allows to make the helper function __v4l2_async_nf_add_connection() visibility private to v4l2-async.c so that there is no risk drivers can mistakenly use it. Signed-off-by: Jacopo Mondi [Sakari Ailus: Small fixups on top.] Signed-off-by: Sakari Ailus --- drivers/media/v4l2-core/v4l2-async.c | 6 +- drivers/media/v4l2-core/v4l2-fwnode.c | 97 --------------------------- include/media/v4l2-async.h | 34 ++-------- include/media/v4l2-fwnode.h | 66 ------------------ 4 files changed, 7 insertions(+), 196 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index b16b5f4cb91e2..7831bc8792904 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -662,8 +662,9 @@ void v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier) } EXPORT_SYMBOL_GPL(v4l2_async_nf_cleanup); -int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, - struct v4l2_async_subdev *asd) + +static int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, + struct v4l2_async_subdev *asd) { int ret; @@ -679,7 +680,6 @@ int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, mutex_unlock(&list_lock); return ret; } -EXPORT_SYMBOL_GPL(__v4l2_async_nf_add_subdev); struct v4l2_async_subdev * __v4l2_async_nf_add_fwnode(struct v4l2_async_notifier *notifier, diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 049c2f2001eaa..b71561957b9fb 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -798,103 +798,6 @@ int v4l2_fwnode_device_parse(struct device *dev, } EXPORT_SYMBOL_GPL(v4l2_fwnode_device_parse); -static int -v4l2_async_nf_fwnode_parse_endpoint(struct device *dev, - struct v4l2_async_notifier *notifier, - struct fwnode_handle *endpoint, - unsigned int asd_struct_size, - parse_endpoint_func parse_endpoint) -{ - struct v4l2_fwnode_endpoint vep = { .bus_type = 0 }; - struct v4l2_async_subdev *asd; - int ret; - - asd = kzalloc(asd_struct_size, GFP_KERNEL); - if (!asd) - return -ENOMEM; - - asd->match_type = V4L2_ASYNC_MATCH_FWNODE; - asd->match.fwnode = - fwnode_graph_get_remote_port_parent(endpoint); - if (!asd->match.fwnode) { - dev_dbg(dev, "no remote endpoint found\n"); - ret = -ENOTCONN; - goto out_err; - } - - ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &vep); - if (ret) { - dev_warn(dev, "unable to parse V4L2 fwnode endpoint (%d)\n", - ret); - goto out_err; - } - - ret = parse_endpoint ? parse_endpoint(dev, &vep, asd) : 0; - if (ret == -ENOTCONN) - dev_dbg(dev, "ignoring port@%u/endpoint@%u\n", vep.base.port, - vep.base.id); - else if (ret < 0) - dev_warn(dev, - "driver could not parse port@%u/endpoint@%u (%d)\n", - vep.base.port, vep.base.id, ret); - v4l2_fwnode_endpoint_free(&vep); - if (ret < 0) - goto out_err; - - ret = __v4l2_async_nf_add_subdev(notifier, asd); - if (ret < 0) { - /* not an error if asd already exists */ - if (ret == -EEXIST) - ret = 0; - goto out_err; - } - - return 0; - -out_err: - fwnode_handle_put(asd->match.fwnode); - kfree(asd); - - return ret == -ENOTCONN ? 0 : ret; -} - -int -v4l2_async_nf_parse_fwnode_endpoints(struct device *dev, - struct v4l2_async_notifier *notifier, - size_t asd_struct_size, - parse_endpoint_func parse_endpoint) -{ - struct fwnode_handle *fwnode; - int ret = 0; - - if (WARN_ON(asd_struct_size < sizeof(struct v4l2_async_subdev))) - return -EINVAL; - - fwnode_graph_for_each_endpoint(dev_fwnode(dev), fwnode) { - struct fwnode_handle *dev_fwnode; - bool is_available; - - dev_fwnode = fwnode_graph_get_port_parent(fwnode); - is_available = fwnode_device_is_available(dev_fwnode); - fwnode_handle_put(dev_fwnode); - if (!is_available) - continue; - - - ret = v4l2_async_nf_fwnode_parse_endpoint(dev, notifier, - fwnode, - asd_struct_size, - parse_endpoint); - if (ret < 0) - break; - } - - fwnode_handle_put(fwnode); - - return ret; -} -EXPORT_SYMBOL_GPL(v4l2_async_nf_parse_fwnode_endpoints); - /* * v4l2_fwnode_reference_parse - parse references for async sub-devices * @dev: the device node the properties of which are parsed for references diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 25eb1d138c069..2c9baa3c9266a 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -131,32 +131,10 @@ void v4l2_async_debug_init(struct dentry *debugfs_dir); * * This function initializes the notifier @asd_list. It must be called * before adding a subdevice to a notifier, using one of: - * v4l2_async_nf_add_fwnode_remote(), - * v4l2_async_nf_add_fwnode(), - * v4l2_async_nf_add_i2c(), - * __v4l2_async_nf_add_subdev() or - * v4l2_async_nf_parse_fwnode_endpoints(). - */ -void v4l2_async_nf_init(struct v4l2_async_notifier *notifier); - -/** - * __v4l2_async_nf_add_subdev - Add an async subdev to the - * notifier's master asd list. - * - * @notifier: pointer to &struct v4l2_async_notifier - * @asd: pointer to &struct v4l2_async_subdev - * - * \warning: Drivers should avoid using this function and instead use one of: - * v4l2_async_nf_add_fwnode(), - * v4l2_async_nf_add_fwnode_remote() or + * v4l2_async_nf_add_fwnode_remote(), v4l2_async_nf_add_fwnode() or * v4l2_async_nf_add_i2c(). - * - * Call this function before registering a notifier to link the provided @asd to - * the notifiers master @asd_list. The @asd must be allocated with k*alloc() as - * it will be freed by the framework when the notifier is destroyed. */ -int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, - struct v4l2_async_subdev *asd); +void v4l2_async_nf_init(struct v4l2_async_notifier *notifier); struct v4l2_async_subdev * __v4l2_async_nf_add_fwnode(struct v4l2_async_notifier *notifier, @@ -263,12 +241,8 @@ void v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier); * Release memory resources related to a notifier, including the async * sub-devices allocated for the purposes of the notifier but not the notifier * itself. The user is responsible for calling this function to clean up the - * notifier after calling - * v4l2_async_nf_add_fwnode_remote(), - * v4l2_async_nf_add_fwnode(), - * v4l2_async_nf_add_i2c(), - * __v4l2_async_nf_add_subdev() or - * v4l2_async_nf_parse_fwnode_endpoints(). + * notifier after calling v4l2_async_nf_add_fwnode_remote(), + * v4l2_async_nf_add_fwnode() or v4l2_async_nf_add_i2c(). * * There is no harm from calling v4l2_async_nf_cleanup() in other * cases as long as its memory has been zeroed after it has been diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h index 394d798f3dfa4..855dae84b751d 100644 --- a/include/media/v4l2-fwnode.h +++ b/include/media/v4l2-fwnode.h @@ -393,72 +393,6 @@ int v4l2_fwnode_connector_add_link(struct fwnode_handle *fwnode, int v4l2_fwnode_device_parse(struct device *dev, struct v4l2_fwnode_device_properties *props); -/** - * typedef parse_endpoint_func - Driver's callback function to be called on - * each V4L2 fwnode endpoint. - * - * @dev: pointer to &struct device - * @vep: pointer to &struct v4l2_fwnode_endpoint - * @asd: pointer to &struct v4l2_async_subdev - * - * Return: - * * %0 on success - * * %-ENOTCONN if the endpoint is to be skipped but this - * should not be considered as an error - * * %-EINVAL if the endpoint configuration is invalid - */ -typedef int (*parse_endpoint_func)(struct device *dev, - struct v4l2_fwnode_endpoint *vep, - struct v4l2_async_subdev *asd); - -/** - * v4l2_async_nf_parse_fwnode_endpoints - Parse V4L2 fwnode endpoints in a - * device node - * @dev: the device the endpoints of which are to be parsed - * @notifier: notifier for @dev - * @asd_struct_size: size of the driver's async sub-device struct, including - * sizeof(struct v4l2_async_subdev). 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. - * @parse_endpoint: Driver's callback function called on each V4L2 fwnode - * endpoint. Optional. - * - * DEPRECATED! This function is deprecated. Don't use it in new drivers. - * Instead see an example in cio2_parse_firmware() function in - * drivers/media/pci/intel/ipu3/ipu3-cio2.c . - * - * Parse the fwnode endpoints of the @dev device and populate the async sub- - * devices list in the notifier. The @parse_endpoint callback function is - * called for each endpoint with the corresponding async sub-device pointer to - * let the caller initialize the driver-specific part of the async sub-device - * structure. - * - * The notifier memory shall be zeroed before this function is called on the - * notifier. - * - * This function may not be called on a registered notifier and may be called on - * a notifier only once. - * - * The &struct v4l2_fwnode_endpoint passed to the callback function - * @parse_endpoint is released once the function is finished. If there is a need - * to retain that configuration, the user needs to allocate memory for it. - * - * Any notifier populated using this function must be released with a call to - * v4l2_async_nf_cleanup() after it has been unregistered and the async - * sub-devices are no longer in use, even if the function returned an error. - * - * Return: %0 on success, including when no async sub-devices are found - * %-ENOMEM if memory allocation failed - * %-EINVAL if graph or endpoint parsing failed - * Other error codes as returned by @parse_endpoint - */ -int -v4l2_async_nf_parse_fwnode_endpoints(struct device *dev, - struct v4l2_async_notifier *notifier, - size_t asd_struct_size, - parse_endpoint_func parse_endpoint); - /* Helper macros to access the connector links. */ /** v4l2_connector_last_link - Helper macro to get the first