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[media] v4l: async: Add fwnode match support

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Add fwnode matching to complement OF node matching. And fwnode may also be
an OF node.

Do not enable fwnode matching yet. It will replace OF matching soon.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sakari Ailus 2016-08-16 06:54:59 -03:00 • committed by Mauro Carvalho Chehab
parent ca50c197bd
commit ecdf0cfe71
3 changed files with 23 additions and 0 deletions
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15
drivers/media/v4l2-core/v4l2-async.c
View file

@ -14,6 +14,7 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/types.h>
@ -46,6 +47,16 @@ static bool match_of(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
of_node_full_name(asd->match.of.node));
}
static bool match_fwnode(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
{
if (!is_of_node(sd->fwnode) || !is_of_node(asd->match.fwnode.fwnode))
return sd->fwnode == asd->match.fwnode.fwnode;
return !of_node_cmp(of_node_full_name(to_of_node(sd->fwnode)),
of_node_full_name(
to_of_node(asd->match.fwnode.fwnode)));
}
static bool match_custom(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
{
if (!asd->match.custom.match)
@ -80,6 +91,9 @@ static struct v4l2_async_subdev *v4l2_async_belongs(struct v4l2_async_notifier *
case V4L2_ASYNC_MATCH_OF:
match = match_of;
break;
case V4L2_ASYNC_MATCH_FWNODE:
match = match_fwnode;
break;
default:
/* Cannot happen, unless someone breaks us */
WARN_ON(true);
@ -158,6 +172,7 @@ int v4l2_async_notifier_register(struct v4l2_device *v4l2_dev,
case V4L2_ASYNC_MATCH_DEVNAME:
case V4L2_ASYNC_MATCH_I2C:
case V4L2_ASYNC_MATCH_OF:
case V4L2_ASYNC_MATCH_FWNODE:
break;
default:
dev_err(notifier->v4l2_dev ? notifier->v4l2_dev->dev : NULL,