Match more generic fwnode instead of OF specific of_node. This will allows
ACPI support.

Signed-off-by: Sakari Ailus <[email protected]>
---
 drivers/media/v4l2-core/v4l2-async.c | 12 ++++++++++++
 include/media/v4l2-async.h           |  5 +++++
 include/media/v4l2-subdev.h          |  3 +++
 3 files changed, 20 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-async.c 
b/drivers/media/v4l2-core/v4l2-async.c
index 5bada20..0dd5e85 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -45,6 +45,11 @@ static bool match_of(struct v4l2_subdev *sd, struct 
v4l2_async_subdev *asd)
        return sd->of_node == asd->match.of.node;
 }
 
+static bool match_fwnode(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
+{
+       return sd->fwnode == asd->match.fwnode.fwn;
+}
+
 static bool match_custom(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
 {
        if (!asd->match.custom.match)
@@ -79,6 +84,9 @@ 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);
@@ -156,6 +164,7 @@ 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,
@@ -280,6 +289,9 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
         */
        if (!sd->of_node && sd->dev)
                sd->of_node = sd->dev->of_node;
+       if (!sd->fwnode && sd->dev)
+               sd->fwnode = sd->dev->of_node ?
+                       &sd->dev->of_node->fwnode : sd->dev->fwnode;
 
        mutex_lock(&list_lock);
 
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index 8e2a236..d6768ab 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -32,6 +32,7 @@ struct v4l2_async_notifier;
  * @V4L2_ASYNC_MATCH_DEVNAME: Match will use the device name
  * @V4L2_ASYNC_MATCH_I2C: Match will check for I2C adapter ID and address
  * @V4L2_ASYNC_MATCH_OF: Match will use OF node
+ * @V4L2_ASYNC_MATCH_FWNODE: Match will use firmware node
  *
  * This enum is used by the asyncrhronous sub-device logic to define the
  * algorithm that will be used to match an asynchronous device.
@@ -41,6 +42,7 @@ enum v4l2_async_match_type {
        V4L2_ASYNC_MATCH_DEVNAME,
        V4L2_ASYNC_MATCH_I2C,
        V4L2_ASYNC_MATCH_OF,
+       V4L2_ASYNC_MATCH_FWNODE,
 };
 
 /**
@@ -58,6 +60,9 @@ struct v4l2_async_subdev {
                        const struct device_node *node;
                } of;
                struct {
+                       const struct fwnode_handle *fwn;
+               } fwnode;
+               struct {
                        const char *name;
                } device_name;
                struct {
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index cf778c5..bb8ef1d 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -788,6 +788,8 @@ struct v4l2_subdev_platform_data {
  * @devnode: subdev device node
  * @dev: pointer to the physical device, if any
  * @of_node: The device_node of the subdev, usually the same as dev->of_node.
+ * @fwnode: The fwnode_handle of the subdev, usually the same as
+ *         either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL).
  * @async_list: Links this subdev to a global subdev_list or @notifier->done
  *     list.
  * @asd: Pointer to respective &struct v4l2_async_subdev.
@@ -819,6 +821,7 @@ struct v4l2_subdev {
        struct video_device *devnode;
        struct device *dev;
        struct device_node *of_node;
+       struct fwnode_handle *fwnode;
        struct list_head async_list;
        struct v4l2_async_subdev *asd;
        struct v4l2_async_notifier *notifier;
-- 
2.7.4

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