On 2/6/19 4:13 PM, Rui Miguel Silva wrote:
> 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.si...@linaro.org>
> ---
> drivers/staging/media/imx/Makefile | 1 +
> .../staging/media/imx/imx-media-dev-common.c | 90 +++++++++++++++++++
> drivers/staging/media/imx/imx-media-dev.c | 86 ++++--------------
> drivers/staging/media/imx/imx-media-of.c | 6 +-
> drivers/staging/media/imx/imx-media.h | 14 +++
> 5 files changed, 127 insertions(+), 70 deletions(-)
> create mode 100644 drivers/staging/media/imx/imx-media-dev-common.c
>
> 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-common.c
> b/drivers/staging/media/imx/imx-media-dev-common.c
> new file mode 100644
> index 000000000000..28bcb31cf6ca
> --- /dev/null
> +++ b/drivers/staging/media/imx/imx-media-dev-common.c
> @@ -0,0 +1,90 @@
> +// SPDX-License-Identifier: GPL
WARNING: 'SPDX-License-Identifier: GPL' is not supported in LICENSES/...
#18: FILE: drivers/staging/media/imx/imx-media-dev-common.c:1:
+// SPDX-License-Identifier: GPL
You no doubt mean GPL-2.0. Just repost this patch with this change.
Regards,
Hans
> +/*
> + * V4L2 Media Controller Driver for Freescale common i.MX5/6/7 SOC
> + *
> + * Copyright (c) 2019 Linaro Ltd
> + * Copyright (c) 2016 Mentor Graphics Inc.
> + */
> +
> +#include <linux/of_graph.h>
> +#include <linux/of_platform.h>
> +#include "imx-media.h"
> +
> +static const struct v4l2_async_notifier_operations imx_media_subdev_ops = {
> + .bound = imx_media_subdev_bound,
> + .complete = imx_media_probe_complete,
> +};
> +
> +static const struct media_device_ops imx_media_md_ops = {
> + .link_notify = imx_media_link_notify,
> +};
> +
> +struct imx_media_dev *imx_media_dev_init(struct device *dev)
> +{
> + struct imx_media_dev *imxmd;
> + int ret;
> +
> + imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL);
> + if (!imxmd)
> + return ERR_PTR(-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;
> + imxmd->v4l2_dev.notify = imx_media_notify;
> + 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);
> +
> + return imxmd;
> +
> +cleanup:
> + media_device_cleanup(&imxmd->md);
> +
> + return ERR_PTR(ret);
> +}
> +EXPORT_SYMBOL_GPL(imx_media_dev_init);
> +
> +int imx_media_dev_notifier_register(struct imx_media_dev *imxmd)
> +{
> + int ret;
> +
> + /* no subdevs? just bail */
> + if (list_empty(&imxmd->notifier.asd_list)) {
> + v4l2_err(&imxmd->v4l2_dev, "no subdevs\n");
> + return -ENODEV;
> + }
> +
> + /* 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);
> + return ret;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(imx_media_dev_notifier_register);
> diff --git a/drivers/staging/media/imx/imx-media-dev.c
> b/drivers/staging/media/imx/imx-media-dev.c
> index 25e916562c66..c42bddd78906 100644
> --- a/drivers/staging/media/imx/imx-media-dev.c
> +++ b/drivers/staging/media/imx/imx-media-dev.c
> @@ -116,9 +116,9 @@ 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;
> @@ -302,7 +302,7 @@ 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;
> @@ -326,11 +326,6 @@ 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.
> @@ -374,8 +369,8 @@ 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;
> @@ -438,13 +433,8 @@ 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 void imx_media_notify(struct v4l2_subdev *sd,
> - unsigned int notification,
> - void *arg)
> +void imx_media_notify(struct v4l2_subdev *sd, unsigned int notification,
> + void *arg)
> {
> struct media_entity *entity = &sd->entity;
> int i;
> @@ -472,77 +462,37 @@ 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);
> -
> - 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;
> - imxmd->v4l2_dev.notify = imx_media_notify;
> - strscpy(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 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 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);
> + ret = imx_media_dev_notifier_register(imxmd);
> + if (ret)
> goto del_int;
> - }
>
> return 0;
>
> del_int:
> imx_media_remove_internal_subdevs(imxmd);
> -notifier_cleanup:
> +cleanup:
> v4l2_async_notifier_cleanup(&imxmd->notifier);
> v4l2_device_unregister(&imxmd->v4l2_dev);
> -cleanup:
> media_device_cleanup(&imxmd->md);
> +
> return ret;
> }
>
> @@ -556,8 +506,8 @@ 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);
> + v4l2_device_unregister(&imxmd->v4l2_dev);
> media_device_cleanup(&imxmd->md);
>
> return 0;
> diff --git a/drivers/staging/media/imx/imx-media-of.c
> b/drivers/staging/media/imx/imx-media-of.c
> index a01327f6e045..03446335ac03 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 7a0e658753f0..0d1c6bbf1109 100644
> --- a/drivers/staging/media/imx/imx-media.h
> +++ b/drivers/staging/media/imx/imx-media.h
> @@ -228,6 +228,18 @@ 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);
> +void imx_media_notify(struct v4l2_subdev *sd, unsigned int notification,
> + void *arg);
> +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);
> +
> /* imx-media-fim.c */
> struct imx_media_fim;
> void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp);
> @@ -251,6 +263,8 @@ 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 *
>
