diff options
| -rw-r--r-- | drivers/staging/media/imx/imx-media-dev.c | 121 | ||||
| -rw-r--r-- | drivers/staging/media/imx/imx-media-internal-sd.c | 5 | ||||
| -rw-r--r-- | drivers/staging/media/imx/imx-media.h | 4 |
3 files changed, 36 insertions, 94 deletions
diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c index a9faee4b2495..481840195071 100644 --- a/drivers/staging/media/imx/imx-media-dev.c +++ b/drivers/staging/media/imx/imx-media-dev.c @@ -33,43 +33,10 @@ static inline struct imx_media_dev *notifier2dev(struct v4l2_async_notifier *n) } /* - * 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, @@ -80,47 +47,34 @@ 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) + dev_dbg(imxmd->md.dev, "%s: already added %s\n", + __func__, np ? np->name : devname); + return ret; } - list_add_tail(&imxasd->list, &imxmd->asd_list); + imxasd = to_imx_media_asd(asd); - imxmd->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"); -out: - mutex_unlock(&imxmd->mutex); - return ret; + return 0; } /* @@ -483,10 +437,8 @@ static int imx_media_probe(struct platform_device *pdev) { 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) @@ -515,44 +467,31 @@ static int imx_media_probe(struct platform_device *pdev) 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->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->notifier.subdevs = subdevs; imxmd->notifier.ops = &imx_media_subdev_ops; ret = v4l2_async_notifier_register(&imxmd->v4l2_dev, &imxmd->notifier); @@ -566,7 +505,8 @@ static int imx_media_probe(struct platform_device *pdev) 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); @@ -582,6 +522,7 @@ static int imx_media_remove(struct platform_device *pdev) 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); diff --git a/drivers/staging/media/imx/imx-media-internal-sd.c b/drivers/staging/media/imx/imx-media-internal-sd.c index daf66c2d69ab..0fdc45dbfb76 100644 --- a/drivers/staging/media/imx/imx-media-internal-sd.c +++ b/drivers/staging/media/imx/imx-media-internal-sd.c @@ -350,8 +350,11 @@ remove: void imx_media_remove_internal_subdevs(struct imx_media_dev *imxmd) { struct imx_media_async_subdev *imxasd; + struct v4l2_async_subdev *asd; + + list_for_each_entry(asd, &imxmd->notifier.asd_list, asd_list) { + imxasd = to_imx_media_asd(asd); - list_for_each_entry(imxasd, &imxmd->asd_list, list) { if (!imxasd->pdev) continue; diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h index 227b79ccc194..bc7feb81937c 100644 --- a/drivers/staging/media/imx/imx-media.h +++ b/drivers/staging/media/imx/imx-media.h @@ -119,12 +119,11 @@ struct imx_media_internal_sd_platformdata { int ipu_id; }; - struct imx_media_async_subdev { + /* the base asd - must be first in this struct */ struct v4l2_async_subdev asd; /* the platform device of IPU-internal subdevs */ struct platform_device *pdev; - struct list_head list; }; static inline struct imx_media_async_subdev * @@ -149,7 +148,6 @@ struct imx_media_dev { struct ipu_soc *ipu[2]; /* for async subdev registration */ - struct list_head asd_list; struct v4l2_async_notifier notifier; }; |