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author | Steve Longerbeam <slongerbeam@gmail.com> | 2018-09-29 15:54:07 -0400 |
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committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-10-04 15:20:00 -0400 |
commit | 23989b43f1079fdb90a621cc554a516b3a012981 (patch) | |
tree | 0973973e1d42ce0d465e7d9c41be318c2fe9be69 /include/media/v4l2-async.h | |
parent | b47d7ff1ae8d40eef92abbe718316c8a56558744 (diff) | |
download | lwn-23989b43f1079fdb90a621cc554a516b3a012981.tar.gz lwn-23989b43f1079fdb90a621cc554a516b3a012981.zip |
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/v4l2-async.h')
-rw-r--r-- | include/media/v4l2-async.h | 62 |
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 |