From: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
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 <jacopo.mondi@xxxxxxxxxxxxxxxx>
[Sakari Ailus: Small fixups on top.]
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Tested-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> # imx6qp
Tested_by: Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx> # rcar + adv746x
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Tested-by: Aishwarya Kothari <aishwarya.kothari@xxxxxxxxxxx> # Apalis i.MX6Q with TC358743
---
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 | 68 -------------------
4 files changed, 7 insertions(+), 198 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..a9a89035e282d 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -22,8 +22,6 @@
#include <media/v4l2-mediabus.h>
struct fwnode_handle;
-struct v4l2_async_notifier;
-struct v4l2_async_subdev;
/**
* struct v4l2_fwnode_endpoint - the endpoint data structure
@@ -393,72 +391,6 @@ 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
--
2.39.2
