[media] V4L: Add V4L2_ASYNC_MATCH_OF subdev matching type
Add support for matching by device_node pointer. This allows
the notifier user to simply pass a list of device_node pointers
corresponding to sub-devices.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 86934ca..9f91013 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -39,6 +39,11 @@
return !strcmp(asd->match.device_name.name, dev_name(dev));
}
+static bool match_of(struct device *dev, struct v4l2_async_subdev *asd)
+{
+ return dev->of_node == asd->match.of.node;
+}
+
static LIST_HEAD(subdev_list);
static LIST_HEAD(notifier_list);
static DEFINE_MUTEX(list_lock);
@@ -66,6 +71,9 @@
case V4L2_ASYNC_MATCH_I2C:
match = match_i2c;
break;
+ case V4L2_ASYNC_MATCH_OF:
+ match = match_of;
+ break;
default:
/* Cannot happen, unless someone breaks us */
WARN_ON(true);
@@ -145,6 +153,7 @@
case V4L2_ASYNC_MATCH_CUSTOM:
case V4L2_ASYNC_MATCH_DEVNAME:
case V4L2_ASYNC_MATCH_I2C:
+ case V4L2_ASYNC_MATCH_OF:
break;
default:
dev_err(notifier->v4l2_dev ? notifier->v4l2_dev->dev : NULL,
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index 33e3b2a..82b2981 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -15,6 +15,7 @@
#include <linux/mutex.h>
struct device;
+struct device_node;
struct v4l2_device;
struct v4l2_subdev;
struct v4l2_async_notifier;
@@ -26,6 +27,7 @@
V4L2_ASYNC_MATCH_CUSTOM,
V4L2_ASYNC_MATCH_DEVNAME,
V4L2_ASYNC_MATCH_I2C,
+ V4L2_ASYNC_MATCH_OF,
};
/**
@@ -39,6 +41,9 @@
enum v4l2_async_match_type match_type;
union {
struct {
+ const struct device_node *node;
+ } of;
+ struct {
const char *name;
} device_name;
struct {