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@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-async.c | 9 +++++++++
include/media/v4l2-async.h | 5 +++++
2 files changed, 14 insertions(+)
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 @@ static bool match_devname(struct device *dev, struct v4l2_async_subdev *asd)
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 @@ static struct v4l2_async_subdev *v4l2_async_belongs(struct v4l2_async_notifier *
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 @@ int v4l2_async_notifier_register(struct v4l2_device *v4l2_dev,
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..295782e 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -13,6 +13,7 @@
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/of.h>
struct device;
struct v4l2_device;
@@ -26,6 +27,7 @@ enum v4l2_async_match_type {
V4L2_ASYNC_MATCH_CUSTOM,
V4L2_ASYNC_MATCH_DEVNAME,
V4L2_ASYNC_MATCH_I2C,
+ V4L2_ASYNC_MATCH_OF,
};
/**
@@ -39,6 +41,9 @@ struct v4l2_async_subdev {
enum v4l2_async_match_type match_type;
union {
struct {
+ const struct device_node *node;
+ } of;
+ struct {
const char *name;
} device_name;
struct {
--
1.7.9.5
--
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