Hello.
On 08/15/2016 06:06 PM, Niklas Söderlund wrote:
The original drivers code to find a subdevice by looking in the DT grpah
s/grpah/graph/.
and how the callbacks to the v4l2 async bind framework where poorly
written. The most obvious example of badness was the duplication of data
in the struct rvin_graph_entity.
This patch removes the data duplication, simplifies the parsing of the
DT graph and add checks to the v4l2 callbacks.
Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
---
drivers/media/platform/rcar-vin/rcar-core.c | 232 +++++++++++++---------------
drivers/media/platform/rcar-vin/rcar-vin.h | 8 +-
2 files changed, 111 insertions(+), 129 deletions(-)
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c
b/drivers/media/platform/rcar-vin/rcar-core.c
index 3941134..39bf6fc 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
[...]
@@ -94,89 +102,111 @@ static int rvin_digital_notify_bound(struct
v4l2_async_notifier *notifier,
{
struct rvin_dev *vin = notifier_to_vin(notifier);
- vin_dbg(vin, "subdev %s bound\n", subdev->name);
+ v4l2_set_subdev_hostdata(subdev, vin);
- vin->digital.entity = &subdev->entity;
- vin->digital.subdev = subdev;
+ if (vin->digital.asd.match.of.node == subdev->dev->of_node) {
+ vin_dbg(vin, "bound digital subdev %s\n", subdev->name);
+ vin->digital.subdev = subdev;
+ return 0;
+ }
- return 0;
+ vin_err(vin, "no entity for subdev %s to bind\n", subdev->name);
+ return -EINVAL;
}
-static int rvin_digital_parse(struct rvin_dev *vin,
- struct device_node *node)
+static int rvin_digitial_parse_v4l2(struct rvin_dev *vin,
s/digitial/digital/.
[...]
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h
b/drivers/media/platform/rcar-vin/rcar-vin.h
index 93daa05..edfe658 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -70,10 +70,12 @@ struct rvin_video_format {
u8 bpp;
};
+/**
+ * struct rvin_graph_entity - Video endpoint from async framework
+ * @asd: sub-device descriptor for async framework
+ * @subdev: subdevice matched using async framework
+ */
Looks like a materia for a separate patch...
struct rvin_graph_entity {
- struct device_node *node;
- struct media_entity *entity;
-
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
};
MBR, Sergei
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