[PATCH v7 01/12] media: staging/imx: refactor imx media device probe
Rui Miguel Silva
rui.silva at linaro.org
Fri Aug 10 14:20:34 UTC 2018
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 at linaro.org>
---
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
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