Refactor and move media device initialization code to a new common module, so it can be used by other devices, this will allow for example a near to introduce imx7 CSI driver, to use this media device. Signed-off-by: Rui Miguel Silva <rui.silva@xxxxxxxxxx> --- drivers/staging/media/imx/Makefile | 1 + drivers/staging/media/imx/imx-media-dev.c | 88 ++++++----------------- drivers/staging/media/imx/imx-media-of.c | 6 +- drivers/staging/media/imx/imx-media.h | 15 ++++ 4 files changed, 40 insertions(+), 70 deletions(-) diff --git a/drivers/staging/media/imx/Makefile b/drivers/staging/media/imx/Makefile index 698a4210316e..a30b3033f9a3 100644 --- a/drivers/staging/media/imx/Makefile +++ b/drivers/staging/media/imx/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 imx-media-objs := imx-media-dev.o imx-media-internal-sd.o imx-media-of.o +imx-media-objs += imx-media-dev-common.o imx-media-common-objs := imx-media-utils.o imx-media-fim.o imx-media-ic-objs := imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c index 659420ec4b2e..b06c300d12e0 100644 --- a/drivers/staging/media/imx/imx-media-dev.c +++ b/drivers/staging/media/imx/imx-media-dev.c @@ -107,9 +107,9 @@ static int imx_media_get_ipu(struct imx_media_dev *imxmd, } /* async subdev bound notifier */ -static int imx_media_subdev_bound(struct v4l2_async_notifier *notifier, - struct v4l2_subdev *sd, - struct v4l2_async_subdev *asd) +int imx_media_subdev_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) { struct imx_media_dev *imxmd = notifier2dev(notifier); int ret = 0; @@ -293,7 +293,7 @@ static int imx_media_create_pad_vdev_lists(struct imx_media_dev *imxmd) } /* async subdev complete notifier */ -static int imx_media_probe_complete(struct v4l2_async_notifier *notifier) +int imx_media_probe_complete(struct v4l2_async_notifier *notifier) { struct imx_media_dev *imxmd = notifier2dev(notifier); int ret; @@ -317,11 +317,6 @@ static int imx_media_probe_complete(struct v4l2_async_notifier *notifier) return media_device_register(&imxmd->md); } -static const struct v4l2_async_notifier_operations imx_media_subdev_ops = { - .bound = imx_media_subdev_bound, - .complete = imx_media_probe_complete, -}; - /* * adds controls to a video device from an entity subdevice. * Continues upstream from the entity's sink pads. @@ -365,8 +360,8 @@ static int imx_media_inherit_controls(struct imx_media_dev *imxmd, return ret; } -static int imx_media_link_notify(struct media_link *link, u32 flags, - unsigned int notification) +int imx_media_link_notify(struct media_link *link, u32 flags, + unsigned int notification) { struct media_entity *source = link->source->entity; struct imx_media_pad_vdev *pad_vdev; @@ -429,10 +424,6 @@ static int imx_media_link_notify(struct media_link *link, u32 flags, return ret; } -static const struct media_device_ops imx_media_md_ops = { - .link_notify = imx_media_link_notify, -}; - static int imx_media_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -440,76 +431,38 @@ static int imx_media_probe(struct platform_device *pdev) struct imx_media_dev *imxmd; int ret; - imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL); - if (!imxmd) - return -ENOMEM; - - dev_set_drvdata(dev, imxmd); - strlcpy(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", - sizeof(imxmd->v4l2_dev.name)); - - media_device_init(&imxmd->md); - - ret = v4l2_device_register(dev, &imxmd->v4l2_dev); - if (ret < 0) { - v4l2_err(&imxmd->v4l2_dev, - "Failed to register v4l2_device: %d\n", ret); - goto cleanup; - } - - dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd); - - INIT_LIST_HEAD(&imxmd->vdev_list); - - v4l2_async_notifier_init(&imxmd->notifier); + imxmd = imx_media_dev_init(dev); + if (IS_ERR(imxmd)) + return PTR_ERR(imxmd); ret = imx_media_add_of_subdevs(imxmd, node); if (ret) { v4l2_err(&imxmd->v4l2_dev, "add_of_subdevs failed with %d\n", ret); - goto notifier_cleanup; + goto dev_cleanup; } ret = imx_media_add_internal_subdevs(imxmd); if (ret) { v4l2_err(&imxmd->v4l2_dev, "add_internal_subdevs failed with %d\n", ret); - goto notifier_cleanup; - } - - /* no subdevs? just bail */ - if (list_empty(&imxmd->notifier.asd_list)) { - ret = -ENODEV; - goto notifier_cleanup; + goto dev_cleanup; } - /* prepare the async subdev notifier and register it */ - imxmd->notifier.ops = &imx_media_subdev_ops; - ret = v4l2_async_notifier_register(&imxmd->v4l2_dev, - &imxmd->notifier); - if (ret) { - v4l2_err(&imxmd->v4l2_dev, - "v4l2_async_notifier_register failed with %d\n", ret); - goto del_int; - } + ret = imx_media_dev_notifier_register(imxmd); + if (ret < 0) + goto del_int; return 0; del_int: imx_media_remove_internal_subdevs(imxmd); -notifier_cleanup: - v4l2_async_notifier_cleanup(&imxmd->notifier); - v4l2_device_unregister(&imxmd->v4l2_dev); -cleanup: - media_device_cleanup(&imxmd->md); + +dev_cleanup: + imx_media_dev_cleanup(imxmd); + return ret; } @@ -522,10 +475,9 @@ 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); + imx_media_dev_notifier_unregister(imxmd); media_device_unregister(&imxmd->md); - media_device_cleanup(&imxmd->md); + imx_media_dev_cleanup(imxmd); return 0; } diff --git a/drivers/staging/media/imx/imx-media-of.c b/drivers/staging/media/imx/imx-media-of.c index 1c9175433ba6..a0020cc7b3f3 100644 --- a/drivers/staging/media/imx/imx-media-of.c +++ b/drivers/staging/media/imx/imx-media-of.c @@ -20,7 +20,8 @@ #include <video/imx-ipu-v3.h> #include "imx-media.h" -static int of_add_csi(struct imx_media_dev *imxmd, struct device_node *csi_np) +int imx_media_of_add_csi(struct imx_media_dev *imxmd, + struct device_node *csi_np) { int ret; @@ -45,6 +46,7 @@ static int of_add_csi(struct imx_media_dev *imxmd, struct device_node *csi_np) return 0; } +EXPORT_SYMBOL_GPL(imx_media_of_add_csi); int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, struct device_node *np) @@ -57,7 +59,7 @@ int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, if (!csi_np) break; - ret = of_add_csi(imxmd, csi_np); + ret = imx_media_of_add_csi(imxmd, csi_np); of_node_put(csi_np); if (ret) return ret; diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h index bc7feb81937c..b7f11c36461b 100644 --- a/drivers/staging/media/imx/imx-media.h +++ b/drivers/staging/media/imx/imx-media.h @@ -226,6 +226,19 @@ int imx_media_add_async_subdev(struct imx_media_dev *imxmd, struct fwnode_handle *fwnode, struct platform_device *pdev); +int imx_media_subdev_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd); +int imx_media_link_notify(struct media_link *link, u32 flags, + unsigned int notification); +int imx_media_probe_complete(struct v4l2_async_notifier *notifier); + +struct imx_media_dev *imx_media_dev_init(struct device *dev); +int imx_media_dev_notifier_register(struct imx_media_dev *imxmd); + +void imx_media_dev_cleanup(struct imx_media_dev *imxmd); +void imx_media_dev_notifier_unregister(struct imx_media_dev *imxmd); + /* imx-media-fim.c */ struct imx_media_fim; void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp); @@ -249,6 +262,8 @@ int imx_media_create_of_links(struct imx_media_dev *imxmd, struct v4l2_subdev *sd); int imx_media_create_csi_of_links(struct imx_media_dev *imxmd, struct v4l2_subdev *csi); +int imx_media_of_add_csi(struct imx_media_dev *imxmd, + struct device_node *csi_np); /* imx-media-capture.c */ struct imx_media_video_dev * -- 2.18.0