static inline struct imx_media_dev *notifier2dev(struct v4l2_async_notifier *n)
{
- return container_of(n, struct imx_media_dev, subdev_notifier);
+ return container_of(n, struct imx_media_dev, notifier);
}
/*
- * Find an asd by fwnode or device name. This is called during
- * driver load to form the async subdev list and bind them.
- */
-static struct v4l2_async_subdev *
-find_async_subdev(struct imx_media_dev *imxmd,
- struct fwnode_handle *fwnode,
- const char *devname)
-{
- struct imx_media_async_subdev *imxasd;
- struct v4l2_async_subdev *asd;
-
- list_for_each_entry(imxasd, &imxmd->asd_list, list) {
- asd = &imxasd->asd;
- switch (asd->match_type) {
- case V4L2_ASYNC_MATCH_FWNODE:
- if (fwnode && asd->match.fwnode == fwnode)
- return asd;
- break;
- case V4L2_ASYNC_MATCH_DEVNAME:
- if (devname && !strcmp(asd->match.device_name,
- devname))
- return asd;
- break;
- default:
- break;
- }
- }
-
- return NULL;
-}
-
-
-/*
- * Adds a subdev to the async subdev list. If fwnode is non-NULL, adds
- * the async as a V4L2_ASYNC_MATCH_FWNODE match type, otherwise as
- * a V4L2_ASYNC_MATCH_DEVNAME match type using the dev_name of the
- * given platform_device. This is called during driver load when
+ * Adds a subdev to the root notifier's async subdev list. If fwnode is
+ * non-NULL, adds the async as a V4L2_ASYNC_MATCH_FWNODE match type,
+ * otherwise as a V4L2_ASYNC_MATCH_DEVNAME match type using the dev_name
+ * of the given platform_device. This is called during driver load when
* forming the async subdev list.
*/
int imx_media_add_async_subdev(struct imx_media_dev *imxmd,
struct imx_media_async_subdev *imxasd;
struct v4l2_async_subdev *asd;
const char *devname = NULL;
- int ret = 0;
-
- mutex_lock(&imxmd->mutex);
+ int ret;
- if (pdev)
+ if (fwnode) {
+ asd = v4l2_async_notifier_add_fwnode_subdev(
+ &imxmd->notifier, fwnode, sizeof(*imxasd));
+ } else {
devname = dev_name(&pdev->dev);
-
- /* return -EEXIST if this asd already added */
- if (find_async_subdev(imxmd, fwnode, devname)) {
- dev_dbg(imxmd->md.dev, "%s: already added %s\n",
- __func__, np ? np->name : devname);
- ret = -EEXIST;
- goto out;
+ asd = v4l2_async_notifier_add_devname_subdev(
+ &imxmd->notifier, devname, sizeof(*imxasd));
}
- imxasd = devm_kzalloc(imxmd->md.dev, sizeof(*imxasd), GFP_KERNEL);
- if (!imxasd) {
- ret = -ENOMEM;
- goto out;
- }
- asd = &imxasd->asd;
-
- if (fwnode) {
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- asd->match.fwnode = fwnode;
- } else {
- asd->match_type = V4L2_ASYNC_MATCH_DEVNAME;
- asd->match.device_name = devname;
- imxasd->pdev = pdev;
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ if (ret == -EEXIST) {
+ if (np)
+ dev_dbg(imxmd->md.dev, "%s: already added %pOFn\n",
+ __func__, np);
+ else
+ dev_dbg(imxmd->md.dev, "%s: already added %s\n",
+ __func__, devname);
+ }
+ return ret;
}
- list_add_tail(&imxasd->list, &imxmd->asd_list);
+ imxasd = to_imx_media_asd(asd);
- imxmd->subdev_notifier.num_subdevs++;
+ if (devname)
+ imxasd->pdev = pdev;
- dev_dbg(imxmd->md.dev, "%s: added %s, match type %s\n",
- __func__, np ? np->name : devname, np ? "FWNODE" : "DEVNAME");
+ if (np)
+ dev_dbg(imxmd->md.dev, "%s: added %pOFn, match type FWNODE\n",
+ __func__, np);
+ else
+ dev_dbg(imxmd->md.dev, "%s: added %s, match type DEVNAME\n",
+ __func__, devname);
-out:
- mutex_unlock(&imxmd->mutex);
- return ret;
+ return 0;
}
/*
}
/*
- * create the media links for all subdevs that registered async.
+ * Create the media links for all subdevs that registered.
* Called after all async subdevs have bound.
*/
static int imx_media_create_links(struct v4l2_async_notifier *notifier)
struct v4l2_subdev *sd;
int ret;
- /*
- * Only links are created between subdevices that are known
- * to the async notifier. If there are other non-async subdevices,
- * they were created internally by some subdevice (smiapp is one
- * example). In those cases it is expected the subdevice is
- * responsible for creating those internal links.
- */
- list_for_each_entry(sd, ¬ifier->done, async_list) {
+ list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
switch (sd->grp_id) {
case IMX_MEDIA_GRP_ID_VDIC:
case IMX_MEDIA_GRP_ID_IC_PRP:
imx_media_create_csi_of_links(imxmd, sd);
break;
default:
- /* this is an external fwnode subdev */
+ /*
+ * if this subdev has fwnode links, create media
+ * links for them.
+ */
imx_media_create_of_links(imxmd, sd);
break;
}
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
- struct imx_media_async_subdev *imxasd;
- struct v4l2_async_subdev **subdevs;
struct imx_media_dev *imxmd;
- int num_subdevs, i, ret;
+ int ret;
imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL);
if (!imxmd)
dev_set_drvdata(dev, imxmd);
- strlcpy(imxmd->md.model, "imx-media", sizeof(imxmd->md.model));
+ strscpy(imxmd->md.model, "imx-media", sizeof(imxmd->md.model));
imxmd->md.ops = &imx_media_md_ops;
imxmd->md.dev = dev;
mutex_init(&imxmd->mutex);
imxmd->v4l2_dev.mdev = &imxmd->md;
- strlcpy(imxmd->v4l2_dev.name, "imx-media",
+ strscpy(imxmd->v4l2_dev.name, "imx-media",
sizeof(imxmd->v4l2_dev.name));
media_device_init(&imxmd->md);
dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd);
- INIT_LIST_HEAD(&imxmd->asd_list);
INIT_LIST_HEAD(&imxmd->vdev_list);
+ v4l2_async_notifier_init(&imxmd->notifier);
+
ret = imx_media_add_of_subdevs(imxmd, node);
if (ret) {
v4l2_err(&imxmd->v4l2_dev,
"add_of_subdevs failed with %d\n", ret);
- goto unreg_dev;
+ goto notifier_cleanup;
}
ret = imx_media_add_internal_subdevs(imxmd);
if (ret) {
v4l2_err(&imxmd->v4l2_dev,
"add_internal_subdevs failed with %d\n", ret);
- goto unreg_dev;
+ goto notifier_cleanup;
}
- num_subdevs = imxmd->subdev_notifier.num_subdevs;
-
/* no subdevs? just bail */
- if (num_subdevs == 0) {
+ if (list_empty(&imxmd->notifier.asd_list)) {
ret = -ENODEV;
- goto unreg_dev;
+ goto notifier_cleanup;
}
- subdevs = devm_kcalloc(imxmd->md.dev, num_subdevs, sizeof(*subdevs),
- GFP_KERNEL);
- if (!subdevs) {
- ret = -ENOMEM;
- goto unreg_dev;
- }
-
- i = 0;
- list_for_each_entry(imxasd, &imxmd->asd_list, list)
- subdevs[i++] = &imxasd->asd;
-
/* prepare the async subdev notifier and register it */
- imxmd->subdev_notifier.subdevs = subdevs;
- imxmd->subdev_notifier.ops = &imx_media_subdev_ops;
+ imxmd->notifier.ops = &imx_media_subdev_ops;
ret = v4l2_async_notifier_register(&imxmd->v4l2_dev,
- &imxmd->subdev_notifier);
+ &imxmd->notifier);
if (ret) {
v4l2_err(&imxmd->v4l2_dev,
"v4l2_async_notifier_register failed with %d\n", ret);
del_int:
imx_media_remove_internal_subdevs(imxmd);
-unreg_dev:
+notifier_cleanup:
+ v4l2_async_notifier_cleanup(&imxmd->notifier);
v4l2_device_unregister(&imxmd->v4l2_dev);
cleanup:
media_device_cleanup(&imxmd->md);
v4l2_info(&imxmd->v4l2_dev, "Removing imx-media\n");
- v4l2_async_notifier_unregister(&imxmd->subdev_notifier);
+ v4l2_async_notifier_unregister(&imxmd->notifier);
imx_media_remove_internal_subdevs(imxmd);
+ v4l2_async_notifier_cleanup(&imxmd->notifier);
v4l2_device_unregister(&imxmd->v4l2_dev);
media_device_unregister(&imxmd->md);
media_device_cleanup(&imxmd->md);
git.samba.org / sfrench / cifs-2.6.git / blobdiff