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authorSteve Longerbeam <slongerbeam@gmail.com>2018-09-29 22:54:07 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2018-10-04 22:20:00 +0300
commit23989b43f1079fdb90a621cc554a516b3a012981 (patch)
tree0973973e1d42ce0d465e7d9c41be318c2fe9be69 /include/media
parentb47d7ff1ae8d40eef92abbe718316c8a56558744 (diff)
downloadlinux-23989b43f1079fdb90a621cc554a516b3a012981.tar.xz
media: v4l2: async: Add convenience functions to allocate and add asd's
Add these convenience functions, which allocate an asd of match type fwnode, i2c, or device-name, of size asd_struct_size, and then adds them to the notifier asd_list. Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-async.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index ab4d7acb7960..3489e4ccb29b 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -175,6 +175,68 @@ int v4l2_async_notifier_add_subdev(struct v4l2_async_notifier *notifier,
struct v4l2_async_subdev *asd);
/**
+ * v4l2_async_notifier_add_fwnode_subdev - Allocate and add a fwnode async
+ * subdev to the notifier's master asd_list.
+ *
+ * @notifier: pointer to &struct v4l2_async_notifier
+ * @fwnode: fwnode handle of the sub-device to be matched
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ * sizeof(struct v4l2_async_subdev). The &struct
+ * v4l2_async_subdev shall be the first member of
+ * the driver's async sub-device struct, i.e. both
+ * begin at the same memory address.
+ *
+ * This can be used before registering a notifier to add a
+ * fwnode-matched asd to the notifiers master asd_list. If the caller
+ * uses this method to compose an asd list, it must never allocate
+ * or place asd's in the @subdevs array.
+ */
+struct v4l2_async_subdev *
+v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
+ struct fwnode_handle *fwnode,
+ unsigned int asd_struct_size);
+
+/**
+ * v4l2_async_notifier_add_i2c_subdev - Allocate and add an i2c async
+ * subdev to the notifier's master asd_list.
+ *
+ * @notifier: pointer to &struct v4l2_async_notifier
+ * @adapter_id: I2C adapter ID to be matched
+ * @address: I2C address of sub-device to be matched
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ * sizeof(struct v4l2_async_subdev). The &struct
+ * v4l2_async_subdev shall be the first member of
+ * the driver's async sub-device struct, i.e. both
+ * begin at the same memory address.
+ *
+ * Same as above but for I2C matched sub-devices.
+ */
+struct v4l2_async_subdev *
+v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
+ int adapter_id, unsigned short address,
+ unsigned int asd_struct_size);
+
+/**
+ * v4l2_async_notifier_add_devname_subdev - Allocate and add a device-name
+ * async subdev to the notifier's master asd_list.
+ *
+ * @notifier: pointer to &struct v4l2_async_notifier
+ * @device_name: device name string to be matched
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ * sizeof(struct v4l2_async_subdev). The &struct
+ * v4l2_async_subdev shall be the first member of
+ * the driver's async sub-device struct, i.e. both
+ * begin at the same memory address.
+ *
+ * Same as above but for device-name matched sub-devices.
+ */
+struct v4l2_async_subdev *
+v4l2_async_notifier_add_devname_subdev(struct v4l2_async_notifier *notifier,
+ const char *device_name,
+ unsigned int asd_struct_size);
+
+
+/**
* v4l2_async_notifier_register - registers a subdevice asynchronous notifier
*
* @v4l2_dev: pointer to &struct v4l2_device