diff options
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-async.c | 41 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 13 | ||||
| -rw-r--r-- | include/media/v4l2-async.h | 30 | ||||
| -rw-r--r-- | include/media/v4l2-subdev.h | 8 |
4 files changed, 90 insertions, 2 deletions
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 6b3c02d27ebf..ea27e04f0f75 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -134,6 +134,30 @@ static bool match_fwnode(struct v4l2_async_notifier *notifier, "v4l2-async: matching for notifier %pfw, sd fwnode %pfw\n", dev_fwnode(notifier_dev(notifier)), sd->fwnode); + if (!list_empty(&sd->async_subdev_endpoint_list)) { + struct v4l2_async_subdev_endpoint *ase; + + dev_dbg(sd->dev, + "v4l2-async: endpoint fwnode list available, looking for %pfw\n", + match->fwnode); + + list_for_each_entry(ase, &sd->async_subdev_endpoint_list, + async_subdev_endpoint_entry) { + bool matched = ase->endpoint == match->fwnode; + + dev_dbg(sd->dev, + "v4l2-async: endpoint-endpoint match %sfound with %pfw\n", + matched ? "" : "not ", ase->endpoint); + + if (matched) + return true; + } + + dev_dbg(sd->dev, "async: no endpoint matched\n"); + + return false; + } + if (match_fwnode_one(notifier, sd, sd->fwnode, match)) return true; @@ -745,6 +769,23 @@ __v4l2_async_nf_add_i2c(struct v4l2_async_notifier *notifier, int adapter_id, } EXPORT_SYMBOL_GPL(__v4l2_async_nf_add_i2c); +int v4l2_async_subdev_endpoint_add(struct v4l2_subdev *sd, + struct fwnode_handle *fwnode) +{ + struct v4l2_async_subdev_endpoint *ase; + + ase = kmalloc(sizeof(*ase), GFP_KERNEL); + if (!ase) + return -ENOMEM; + + ase->endpoint = fwnode; + list_add(&ase->async_subdev_endpoint_entry, + &sd->async_subdev_endpoint_list); + + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_async_subdev_endpoint_add); + struct v4l2_async_connection * v4l2_async_connection_unique(struct v4l2_subdev *sd) { diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 2ec179cd1264..217b8019fb9b 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1467,8 +1467,20 @@ EXPORT_SYMBOL_GPL(__v4l2_subdev_init_finalize); void v4l2_subdev_cleanup(struct v4l2_subdev *sd) { + struct v4l2_async_subdev_endpoint *ase, *ase_tmp; + __v4l2_subdev_state_free(sd->active_state); sd->active_state = NULL; + + if (list_empty(&sd->async_subdev_endpoint_list)) + return; + + list_for_each_entry_safe(ase, ase_tmp, &sd->async_subdev_endpoint_list, + async_subdev_endpoint_entry) { + list_del(&ase->async_subdev_endpoint_entry); + + kfree(ase); + } } EXPORT_SYMBOL_GPL(v4l2_subdev_cleanup); @@ -2182,6 +2194,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) sd->dev_priv = NULL; sd->host_priv = NULL; sd->privacy_led = NULL; + INIT_LIST_HEAD(&sd->async_subdev_endpoint_list); #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV; diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 8670b8e44851..41a9c4bada8a 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -126,6 +126,18 @@ struct v4l2_async_notifier { }; /** + * struct v4l2_async_subdev_endpoint - Entry in sub-device's fwnode list + * + * @async_subdev_endpoint_entry: An entry in async_subdev_endpoint_list of + * &struct v4l2_subdev + * @endpoint: Endpoint fwnode agains which to match the sub-device + */ +struct v4l2_async_subdev_endpoint { + struct list_head async_subdev_endpoint_entry; + struct fwnode_handle *endpoint; +}; + +/** * v4l2_async_debug_init - Initialize debugging tools. * * @debugfs_dir: pointer to the parent debugfs &struct dentry @@ -216,6 +228,24 @@ __v4l2_async_nf_add_i2c(struct v4l2_async_notifier *notifier, sizeof(type))) /** + * v4l2_async_subdev_endpoint_add - Add an endpoint fwnode to async sub-device + * matching list + * + * @sd: the sub-device + * @fwnode: the endpoint fwnode to match + * + * Add a fwnode to the async sub-device's matching list. This allows registering + * multiple async sub-devices from a single device. + * + * Note that calling v4l2_subdev_cleanup() as part of the sub-device's cleanup + * if endpoints have been added to the sub-device's fwnode matching list. + * + * Returns an error on failure, 0 on success. + */ +int v4l2_async_subdev_endpoint_add(struct v4l2_subdev *sd, + struct fwnode_handle *fwnode); + +/** * v4l2_async_connection_unique - return a unique &struct v4l2_async_connection * for a sub-device * @sd: the sub-device diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index a8078ae99596..a012741cc876 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1022,6 +1022,8 @@ struct v4l2_subdev_platform_data { * either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL). * @async_list: Links this subdev to a global subdev_list or * @notifier->done_list list. + * @async_subdev_endpoint_list: List entry in async_subdev_endpoint_entry of + * &struct v4l2_async_subdev_endpoint. * @subdev_notifier: A sub-device notifier implicitly registered for the sub- * device using v4l2_async_register_subdev_sensor(). * @asc_list: Async connection list, of &struct @@ -1065,6 +1067,7 @@ struct v4l2_subdev { struct device *dev; struct fwnode_handle *fwnode; struct list_head async_list; + struct list_head async_subdev_endpoint_list; struct v4l2_async_notifier *subdev_notifier; struct list_head asc_list; struct v4l2_subdev_platform_data *pdata; @@ -1382,8 +1385,9 @@ int __v4l2_subdev_init_finalize(struct v4l2_subdev *sd, const char *name, * v4l2_subdev_cleanup() - Releases the resources allocated by the subdevice * @sd: The subdevice * - * This function will release the resources allocated in - * v4l2_subdev_init_finalize. + * Clean up a V4L2 async sub-device. Must be called for a sub-device as part of + * its release if resources have been associated with it using + * v4l2_async_subdev_endpoint_add() or v4l2_subdev_init_finalize(). */ void v4l2_subdev_cleanup(struct v4l2_subdev *sd); |