Commit e7359f8e authored by Sylwester Nawrocki's avatar Sylwester Nawrocki Committed by Mauro Carvalho Chehab

[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: 's avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: 's avatarKyungmin Park <kyungmin.park@samsung.com>
Acked-by: 's avatarLad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: 's avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: 's avatarHans Verkuil <hans.verkuil@cisco.com>
Acked-by: 's avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: 's avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent cfca7644
......@@ -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,
......
......@@ -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 @@ enum v4l2_async_match_type {
V4L2_ASYNC_MATCH_CUSTOM,
V4L2_ASYNC_MATCH_DEVNAME,
V4L2_ASYNC_MATCH_I2C,
V4L2_ASYNC_MATCH_OF,
};
/**
......@@ -38,6 +40,9 @@ enum v4l2_async_match_type {
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;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment