struct cio2_device *cio2 = container_of(notifier, struct cio2_device,
notifier);
struct sensor_async_subdev *s_asd;
+ struct v4l2_async_subdev *asd;
struct cio2_queue *q;
- unsigned int i, pad;
+ unsigned int pad;
int ret;
- for (i = 0; i < notifier->num_subdevs; i++) {
- s_asd = container_of(cio2->notifier.subdevs[i],
- struct sensor_async_subdev, asd);
+ list_for_each_entry(asd, &cio2->notifier.asd_list, asd_list) {
+ s_asd = container_of(asd, struct sensor_async_subdev, asd);
q = &cio2->queue[s_asd->csi2.port];
for (pad = 0; pad < q->sensor->entity.num_pads; pad++)
if (ret) {
dev_err(&cio2->pci_dev->dev,
"failed to create link for %s\n",
- cio2->queue[i].sensor->name);
+ q->sensor->name);
return ret;
}
}
{
int ret;
+ v4l2_async_notifier_init(&cio2->notifier);
+
ret = v4l2_async_notifier_parse_fwnode_endpoints(
&cio2->pci_dev->dev, &cio2->notifier,
sizeof(struct sensor_async_subdev),
}
EXPORT_SYMBOL_GPL(v4l2_fwnode_put_link);
-static int v4l2_async_notifier_realloc(struct v4l2_async_notifier *notifier,
- unsigned int max_subdevs)
-{
- struct v4l2_async_subdev **subdevs;
-
- if (max_subdevs <= notifier->max_subdevs)
- return 0;
-
- subdevs = kvmalloc_array(
- max_subdevs, sizeof(*notifier->subdevs),
- GFP_KERNEL | __GFP_ZERO);
- if (!subdevs)
- return -ENOMEM;
-
- if (notifier->subdevs) {
- memcpy(subdevs, notifier->subdevs,
- sizeof(*subdevs) * notifier->num_subdevs);
-
- kvfree(notifier->subdevs);
- }
-
- notifier->subdevs = subdevs;
- notifier->max_subdevs = max_subdevs;
-
- return 0;
-}
-
static int v4l2_async_notifier_fwnode_parse_endpoint(
struct device *dev, struct v4l2_async_notifier *notifier,
struct fwnode_handle *endpoint, unsigned int asd_struct_size,
if (ret < 0)
goto out_err;
- notifier->subdevs[notifier->num_subdevs] = asd;
- notifier->num_subdevs++;
+ ret = v4l2_async_notifier_add_subdev(notifier, asd);
+ if (ret < 0) {
+ /* not an error if asd already exists */
+ if (ret == -EEXIST)
+ ret = 0;
+ goto out_err;
+ }
return 0;
struct v4l2_async_subdev *asd))
{
struct fwnode_handle *fwnode;
- unsigned int max_subdevs = notifier->max_subdevs;
- int ret;
+ int ret = 0;
if (WARN_ON(asd_struct_size < sizeof(struct v4l2_async_subdev)))
return -EINVAL;
- for (fwnode = NULL; (fwnode = fwnode_graph_get_next_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;
-
- if (has_port) {
- struct fwnode_endpoint ep;
-
- ret = fwnode_graph_parse_endpoint(fwnode, &ep);
- if (ret) {
- fwnode_handle_put(fwnode);
- return ret;
- }
-
- if (ep.port != port)
- continue;
- }
- max_subdevs++;
- }
-
- /* No subdevs to add? Return here. */
- if (max_subdevs == notifier->max_subdevs)
- return 0;
-
- ret = v4l2_async_notifier_realloc(notifier, max_subdevs);
- if (ret)
- return ret;
-
for (fwnode = NULL; (fwnode = fwnode_graph_get_next_endpoint(
dev_fwnode(dev), fwnode)); ) {
struct fwnode_handle *dev_fwnode;
continue;
}
- if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs)) {
- ret = -EINVAL;
- break;
- }
-
ret = v4l2_async_notifier_fwnode_parse_endpoint(
dev, notifier, fwnode, asd_struct_size, parse_endpoint);
if (ret < 0)
if (ret != -ENOENT && ret != -ENODATA)
return ret;
- ret = v4l2_async_notifier_realloc(notifier,
- notifier->num_subdevs + index);
- if (ret)
- return ret;
-
for (index = 0; !fwnode_property_get_reference_args(
dev_fwnode(dev), prop, NULL, 0, index, &args);
index++) {
struct v4l2_async_subdev *asd;
- if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs)) {
- ret = -EINVAL;
- goto error;
- }
+ asd = v4l2_async_notifier_add_fwnode_subdev(
+ notifier, args.fwnode, sizeof(*asd));
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ /* not an error if asd already exists */
+ if (ret == -EEXIST) {
+ fwnode_handle_put(args.fwnode);
+ continue;
+ }
- asd = kzalloc(sizeof(*asd), GFP_KERNEL);
- if (!asd) {
- ret = -ENOMEM;
goto error;
}
-
- notifier->subdevs[notifier->num_subdevs] = asd;
- asd->match.fwnode = args.fwnode;
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- notifier->num_subdevs++;
}
return 0;
index++;
} while (1);
- ret = v4l2_async_notifier_realloc(notifier,
- notifier->num_subdevs + index);
- if (ret)
- return -ENOMEM;
-
for (index = 0; !IS_ERR((fwnode = v4l2_fwnode_reference_get_int_prop(
dev_fwnode(dev), prop, index, props,
nprops))); index++) {
struct v4l2_async_subdev *asd;
- if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs)) {
- ret = -EINVAL;
- goto error;
- }
+ asd = v4l2_async_notifier_add_fwnode_subdev(notifier, fwnode,
+ sizeof(*asd));
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ /* not an error if asd already exists */
+ if (ret == -EEXIST) {
+ fwnode_handle_put(fwnode);
+ continue;
+ }
- asd = kzalloc(sizeof(struct v4l2_async_subdev), GFP_KERNEL);
- if (!asd) {
- ret = -ENOMEM;
goto error;
}
-
- notifier->subdevs[notifier->num_subdevs] = asd;
- asd->match.fwnode = fwnode;
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- notifier->num_subdevs++;
}
return PTR_ERR(fwnode) == -ENOENT ? 0 : PTR_ERR(fwnode);
if (!notifier)
return -ENOMEM;
+ v4l2_async_notifier_init(notifier);
+
ret = v4l2_async_notifier_parse_fwnode_sensor_common(sd->dev,
notifier);
if (ret < 0)
* endpoint. Optional.
*
* Parse the fwnode endpoints of the @dev device and populate the async sub-
- * devices array of the notifier. The @parse_endpoint callback function is
+ * 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.
* This function may not be called on a registered notifier and may be called on
* a notifier only once.
*
- * Do not change the notifier's subdevs array, take references to the subdevs
- * array itself or change the notifier's num_subdevs field. This is because this
- * function allocates and reallocates the subdevs array based on parsing
- * endpoints.
+ * Do not allocate the notifier's subdevs array, or change the notifier's
+ * num_subdevs field. This is because this function uses
+ * @v4l2_async_notifier_add_subdev to populate the notifier's asd_list,
+ * which is in-place-of the subdevs array which must remain unallocated
+ * and unused.
*
* The &struct v4l2_fwnode_endpoint passed to the callback function
* @parse_endpoint is released once the function is finished. If there is a need
* devices). In this case the driver must know which ports to parse.
*
* Parse the fwnode endpoints of the @dev device on a given @port and populate
- * the async sub-devices array of the notifier. The @parse_endpoint callback
+ * the async sub-devices list of 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.
* This function may not be called on a registered notifier and may be called on
* a notifier only once per port.
*
- * Do not change the notifier's subdevs array, take references to the subdevs
- * array itself or change the notifier's num_subdevs field. This is because this
- * function allocates and reallocates the subdevs array based on parsing
- * endpoints.
+ * Do not allocate the notifier's subdevs array, or change the notifier's
+ * num_subdevs field. This is because this function uses
+ * @v4l2_async_notifier_add_subdev to populate the notifier's asd_list,
+ * which is in-place-of the subdevs array which must remain unallocated
+ * and unused.
*
* The &struct v4l2_fwnode_endpoint passed to the callback function
* @parse_endpoint is released once the function is finished. If there is a need
projects / openwrt / staging / blogic.git / commitdiff