[v2,10/31] media: v4l: async: Only pass match information for async subdev validation

Message ID	20230516095517.611711-11-sakari.ailus@linux.intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@vger.kernel.org> From: Sakari Ailus <sakari.ailus@linux.intel.com> To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, Philipp Zabel <p.zabel@pengutronix.de>, hverkuil@xs4all.nl, Francesco Dolcini <francesco@dolcini.it>, aishwarya.kothari@toradex.com, Robert Foss <rfoss@kernel.org>, Todor Tomov <todor.too@gmail.com>, Hyun Kwon <hyun.kwon@xilinx.com>, bingbu.cao@intel.com Subject: [PATCH v2 10/31] media: v4l: async: Only pass match information for async subdev validation Date: Tue, 16 May 2023 12:54:56 +0300 Message-Id: <20230516095517.611711-11-sakari.ailus@linux.intel.com> In-Reply-To: <20230516095517.611711-1-sakari.ailus@linux.intel.com> References: <20230516095517.611711-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Separate links and async sub-devices \| expand [v2,00/31] Separate links and async sub-devices [v2,01/31] media: v4l: async: Drop v4l2_async_nf_parse_fwnode_endpoints() [v2,02/31] media: Documentation: v4l: Document missing async subdev function [v2,03/31] media: xilinx-vipp: Clean up bound async notifier callback [v2,04/31] media: v4l: async: Add some debug prints [v2,05/31] media: v4l: async: Clean testing for duplicated async subdevs [v2,06/31] media: v4l: async: Drop unneeded list entry initialisation [v2,07/31] media: v4l: async: Don't check whether asd is NULL in validity check [v2,08/31] media: v4l: async: Make V4L2 async match information a struct [v2,09/31] media: v4l: async: Rename V4L2_ASYNC_MATCH_ macros, add TYPE_ [v2,10/31] media: v4l: async: Only pass match information for async subdev validation [v2,11/31] media: v4l: async: Clean up list heads and entries [v2,12/31] media: v4l: async: Simplify async sub-device fwnode matching [v2,13/31] media: v4l: async: Rename v4l2_async_subdev as v4l2_async_connection [v2,14/31] media: v4l: async: Clean up error handling in v4l2_async_match_notify [v2,15/31] media: v4l: async: Drop duplicate handling when adding connections [v2,16/31] media: v4l: async: Rework internal lists [v2,17/31] media: v4l: async: Obtain async connection based on sub-device [v2,18/31] media: v4l: async: Differentiate connecting and creating sub-devices [v2,19/31] media: v4l: async: Try more connections [v2,20/31] media: v4l: async: Support fwnode endpoint list matching for subdevs [v2,21/31] media: adv748x: Return to endpoint matching [v2,22/31] media: pxa_camera: Fix probe error handling [v2,23/31] media: pxa_camera: Register V4L2 device early, fix probe error handling [v2,24/31] media: marvell: cafe: Register V4L2 device earlier [v2,25/31] media: am437x-vpfe: Register V4L2 device early [v2,26/31] media: omap3isp: Initialise V4L2 async notifier later [v2,27/31] media: xilinx-vipp: Init async notifier after registering V4L2 device [v2,28/31] media: davinci: Init async notifier after registering V4L2 device [v2,29/31] media: qcom: Initialise V4L2 async notifier later [v2,30/31] media: v4l: async: Set v4l2_device in async notifier init [v2,31/31] media: Documentation: v4l: Document sub-device notifiers

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index f6328d9a65a08..87a34749a8cdc 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -64,14 +64,15 @@ static void v4l2_async_nf_call_destroy(struct v4l2_async_notifier *n, } static bool match_i2c(struct v4l2_async_notifier *notifier, - struct v4l2_subdev *sd, struct v4l2_async_subdev *asd) + struct v4l2_subdev *sd, + struct v4l2_async_match_desc *match) { #if IS_ENABLED(CONFIG_I2C) struct i2c_client *client = i2c_verify_client(sd->dev); return client && - asd->match.i2c.adapter_id == client->adapter->nr && - asd->match.i2c.address == client->addr; + match->i2c.adapter_id == client->adapter->nr && + match->i2c.address == client->addr; #else return false; #endif @@ -91,7 +92,7 @@ static struct device *notifier_dev(struct v4l2_async_notifier *notifier) static bool match_fwnode_one(struct v4l2_async_notifier *notifier, struct v4l2_subdev *sd, struct fwnode_handle *sd_fwnode, - struct v4l2_async_subdev *asd) + struct v4l2_async_match_desc *match) { struct fwnode_handle *other_fwnode; struct fwnode_handle *dev_fwnode; @@ -101,14 +102,14 @@ match_fwnode_one(struct v4l2_async_notifier *notifier, dev_dbg(notifier_dev(notifier), "v4l2-async: fwnode match: need %pfw, trying %pfw\n", - sd_fwnode, asd->match.fwnode); + sd_fwnode, match->fwnode); /* * Both the subdev and the async subdev can provide either an endpoint * fwnode or a device fwnode. Start with the simple case of direct * fwnode matching. */ - if (sd_fwnode == asd->match.fwnode) { + if (sd_fwnode == match->fwnode) { dev_dbg(notifier_dev(notifier), "v4l2-async: direct match found\n"); return true; @@ -123,7 +124,7 @@ match_fwnode_one(struct v4l2_async_notifier *notifier, * match unconnected endpoints. */ sd_fwnode_is_ep = fwnode_graph_is_endpoint(sd_fwnode); - asd_fwnode_is_ep = fwnode_graph_is_endpoint(asd->match.fwnode); + asd_fwnode_is_ep = fwnode_graph_is_endpoint(match->fwnode); if (sd_fwnode_is_ep == asd_fwnode_is_ep) { dev_dbg(notifier_dev(notifier), @@ -137,9 +138,9 @@ match_fwnode_one(struct v4l2_async_notifier *notifier, */ if (sd_fwnode_is_ep) { dev_fwnode = fwnode_graph_get_port_parent(sd_fwnode); - other_fwnode = asd->match.fwnode; + other_fwnode = match->fwnode; } else { - dev_fwnode = fwnode_graph_get_port_parent(asd->match.fwnode); + dev_fwnode = fwnode_graph_get_port_parent(match->fwnode); other_fwnode = sd_fwnode; } @@ -179,13 +180,14 @@ match_fwnode_one(struct v4l2_async_notifier *notifier, } static bool match_fwnode(struct v4l2_async_notifier *notifier, - struct v4l2_subdev *sd, struct v4l2_async_subdev *asd) + struct v4l2_subdev *sd, + struct v4l2_async_match_desc *match) { dev_dbg(notifier_dev(notifier), "v4l2-async: matching for notifier %pfw, sd fwnode %pfw\n", dev_fwnode(notifier_dev(notifier)), sd->fwnode); - if (match_fwnode_one(notifier, sd, sd->fwnode, asd)) + if (match_fwnode_one(notifier, sd, sd->fwnode, match)) return true; /* Also check the secondary fwnode. */ @@ -195,7 +197,7 @@ static bool match_fwnode(struct v4l2_async_notifier *notifier, dev_dbg(notifier_dev(notifier), "v4l2-async: trying secondary fwnode match\n"); - return match_fwnode_one(notifier, sd, sd->fwnode->secondary, asd); + return match_fwnode_one(notifier, sd, sd->fwnode->secondary, match); } static LIST_HEAD(subdev_list); @@ -207,7 +209,8 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier, struct v4l2_subdev *sd) { bool (*match)(struct v4l2_async_notifier *notifier, - struct v4l2_subdev *sd, struct v4l2_async_subdev *asd); + struct v4l2_subdev *sd, + struct v4l2_async_match_desc *match); struct v4l2_async_subdev *asd; list_for_each_entry(asd, &notifier->waiting, list) { @@ -226,7 +229,7 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier, } /* match cannot be NULL here */ - if (match(notifier, sd, asd)) + if (match(notifier, sd, &asd->match)) return asd; } @@ -234,20 +237,18 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier, } /* Compare two async sub-device descriptors for equivalence */ -static bool asd_equal(struct v4l2_async_subdev *asd_x, - struct v4l2_async_subdev *asd_y) +static bool v4l2_async_match_equal(struct v4l2_async_match_desc *match1, + struct v4l2_async_match_desc *match2) { - if (asd_x->match.type != asd_y->match.type) + if (match1->type != match2->type) return false; - switch (asd_x->match.type) { + switch (match1->type) { case V4L2_ASYNC_MATCH_TYPE_I2C: - return asd_x->match.i2c.adapter_id == - asd_y->match.i2c.adapter_id && - asd_x->match.i2c.address == - asd_y->match.i2c.address; + return match1->i2c.adapter_id == match2->i2c.adapter_id && + match1->i2c.address == match2->i2c.address; case V4L2_ASYNC_MATCH_TYPE_FWNODE: - return asd_x->match.fwnode == asd_y->match.fwnode; + return match1->fwnode == match2->fwnode; default: break; } @@ -497,21 +498,21 @@ v4l2_async_nf_unbind_all_subdevs(struct v4l2_async_notifier *notifier, /* See if an async sub-device can be found in a notifier's lists. */ static bool -__v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier, - struct v4l2_async_subdev *asd) +v4l2_async_nf_has_async_match_entry(struct v4l2_async_notifier *notifier, + struct v4l2_async_match_desc *match) { - struct v4l2_async_subdev *asd_y; + struct v4l2_async_subdev *asd; struct v4l2_subdev *sd; - list_for_each_entry(asd_y, &notifier->waiting, list) - if (asd_equal(asd, asd_y)) + list_for_each_entry(asd, &notifier->waiting, list) + if (v4l2_async_match_equal(&asd->match, match)) return true; list_for_each_entry(sd, &notifier->done, async_list) { if (WARN_ON(!sd->asd)) continue; - if (asd_equal(asd, sd->asd)) + if (v4l2_async_match_equal(&sd->asd->match, match)) return true; } @@ -523,46 +524,48 @@ __v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier, * whether it exists in a given notifier. */ static bool -v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier, - struct v4l2_async_subdev *asd, bool skip_self) +v4l2_async_nf_has_async_match(struct v4l2_async_notifier *notifier, + struct v4l2_async_match_desc *match, + bool skip_self) { - struct v4l2_async_subdev *asd_y; + struct v4l2_async_subdev *asd; lockdep_assert_held(&list_lock); /* Check that an asd is not being added more than once. */ - list_for_each_entry(asd_y, &notifier->asd_list, asd_list) { - if (skip_self && asd == asd_y) + list_for_each_entry(asd, &notifier->asd_list, asd_list) { + if (skip_self && &asd->match == match) break; - if (asd_equal(asd, asd_y)) + if (v4l2_async_match_equal(&asd->match, match)) return true; } /* Check that an asd does not exist in other notifiers. */ list_for_each_entry(notifier, &notifier_list, list) - if (__v4l2_async_nf_has_async_subdev(notifier, asd)) + if (v4l2_async_nf_has_async_match_entry(notifier, match)) return true; return false; } -static int v4l2_async_nf_asd_valid(struct v4l2_async_notifier *notifier, - struct v4l2_async_subdev *asd, - bool skip_self) +static int v4l2_async_nf_match_valid(struct v4l2_async_notifier *notifier, + struct v4l2_async_match_desc *match, + bool skip_self) { struct device *dev = notifier_dev(notifier); - switch (asd->match.type) { + switch (match->type) { case V4L2_ASYNC_MATCH_TYPE_I2C: case V4L2_ASYNC_MATCH_TYPE_FWNODE: - if (v4l2_async_nf_has_async_subdev(notifier, asd, skip_self)) { - dev_dbg(dev, "v4l2-async: subdev descriptor already listed in this or other notifiers\n"); + if (v4l2_async_nf_has_async_match(notifier, match, + skip_self)) { + dev_dbg(dev, "v4l2-async: match descriptor already listed in this or other notifiers\n"); return -EEXIST; } break; default: - dev_err(dev, "v4l2-asymc: Invalid match type %u on %p\n", - asd->match.type, asd); + dev_err(dev, "v4l2-async: Invalid match type %u on %p\n", match->type, + match); return -EINVAL; } @@ -586,7 +589,7 @@ static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier) mutex_lock(&list_lock); list_for_each_entry(asd, &notifier->asd_list, asd_list) { - ret = v4l2_async_nf_asd_valid(notifier, asd, true); + ret = v4l2_async_nf_match_valid(notifier, &asd->match, true); if (ret) goto err_unlock; @@ -720,7 +723,7 @@ static int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier, mutex_lock(&list_lock); - ret = v4l2_async_nf_asd_valid(notifier, asd, false); + ret = v4l2_async_nf_match_valid(notifier, &asd->match, false); if (ret) goto unlock; @@ -898,16 +901,16 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd) } EXPORT_SYMBOL(v4l2_async_unregister_subdev); -static void print_waiting_subdev(struct seq_file *s, - struct v4l2_async_subdev *asd) +static void print_waiting_match(struct seq_file *s, + struct v4l2_async_match_desc *match) { - switch (asd->match.type) { + switch (match->type) { case V4L2_ASYNC_MATCH_TYPE_I2C: - seq_printf(s, " [i2c] dev=%d-%04x\n", asd->match.i2c.adapter_id, - asd->match.i2c.address); + seq_printf(s, " [i2c] dev=%d-%04x\n", match->i2c.adapter_id, + match->i2c.address); break; case V4L2_ASYNC_MATCH_TYPE_FWNODE: { - struct fwnode_handle *devnode, *fwnode = asd->match.fwnode; + struct fwnode_handle *devnode, *fwnode = match->fwnode; devnode = fwnode_graph_is_endpoint(fwnode) ? fwnode_graph_get_port_parent(fwnode) : @@ -944,7 +947,7 @@ static int pending_subdevs_show(struct seq_file *s, void *data) list_for_each_entry(notif, &notifier_list, list) { seq_printf(s, "%s:\n", v4l2_async_nf_name(notif)); list_for_each_entry(asd, &notif->waiting, list) - print_waiting_subdev(s, asd); + print_waiting_match(s, &asd->match); } mutex_unlock(&list_lock);

[v2,10/31] media: v4l: async: Only pass match information for async subdev validation

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Patch