/* * V4L2 asynchronous subdevice registration API * * Copyright (C) 2012-2013, Guennadi Liakhovetski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef V4L2_ASYNC_H #define V4L2_ASYNC_H #include #include struct device; struct device_node; struct v4l2_device; struct v4l2_subdev; struct v4l2_async_notifier; /* A random max subdevice number, used to allocate an array on stack */ #define V4L2_MAX_SUBDEVS 128U /** * enum v4l2_async_match_type - type of asynchronous subdevice logic to be used * in order to identify a match * * @V4L2_ASYNC_MATCH_CUSTOM: Match will use the logic provided by &struct * v4l2_async_subdev.match ops * @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 * * This enum is used by the asyncrhronous sub-device logic to define the * algorithm that will be used to match an asynchronous device. */ enum v4l2_async_match_type { V4L2_ASYNC_MATCH_CUSTOM, V4L2_ASYNC_MATCH_DEVNAME, V4L2_ASYNC_MATCH_I2C, V4L2_ASYNC_MATCH_OF, }; /** * struct v4l2_async_subdev - sub-device descriptor, as known to a bridge * * @match_type: type of match that will be used * @match: union of per-bus type matching data sets * @list: used to link struct v4l2_async_subdev objects, waiting to be * probed, to a notifier->waiting list */ 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; struct { int adapter_id; unsigned short address; } i2c; struct { bool (*match)(struct device *, struct v4l2_async_subdev *); void *priv; } custom; } match; /* v4l2-async core private: not to be used by drivers */ struct list_head list; }; /** * struct v4l2_async_notifier - v4l2_device notifier data * * @num_subdevs: number of subdevices * @subdevs: array of pointers to subdevice descriptors * @v4l2_dev: pointer to struct v4l2_device * @waiting: list of struct v4l2_async_subdev, waiting for their drivers * @done: list of struct v4l2_subdev, already probed * @list: member in a global list of notifiers * @bound: a subdevice driver has successfully probed one of subdevices * @complete: all subdevices have been probed successfully * @unbind: a subdevice is leaving */ struct v4l2_async_notifier { unsigned int num_subdevs; struct v4l2_async_subdev **subdevs; struct v4l2_device *v4l2_dev; struct list_head waiting; struct list_head done; struct list_head list; int (*bound)(struct v4l2_async_notifier *notifier, struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd); int (*complete)(struct v4l2_async_notifier *notifier); void (*unbind)(struct v4l2_async_notifier *notifier, struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd); }; /** * v4l2_async_notifier_register - registers a subdevice asynchronous notifier * * @v4l2_dev: pointer to &struct v4l2_device * @notifier: pointer to &struct v4l2_async_notifier */ int v4l2_async_notifier_register(struct v4l2_device *v4l2_dev, struct v4l2_async_notifier *notifier); /** * v4l2_async_notifier_unregister - unregisters a subdevice asynchronous notifier * * @notifier: pointer to &struct v4l2_async_notifier */ void v4l2_async_notifier_unregister(struct v4l2_async_notifier *notifier); /** * v4l2_async_register_subdev - registers a sub-device to the asynchronous * subdevice framework * * @sd: pointer to &struct v4l2_subdev */ int v4l2_async_register_subdev(struct v4l2_subdev *sd); /** * v4l2_async_unregister_subdev - unregisters a sub-device to the asynchronous * subdevice framework * * @sd: pointer to &struct v4l2_subdev */ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd); #endif --r--ib_cache.h6375log plain -rw-r--r--ib_cm.h19359log plain -rw-r--r--ib_fmr_pool.h3439log plain -rw-r--r--ib_hdrs.h4989log plain -rw-r--r--ib_mad.h27924log plain -rw-r--r--ib_marshall.h2025log plain -rw-r--r--ib_pack.h9047log plain -rw-r--r--ib_pma.h5579log plain -rw-r--r--ib_sa.h16914log plain -rw-r--r--ib_smi.h5633log plain -rw-r--r--ib_umem.h3577log plain -rw-r--r--ib_umem_odp.h5300log plain -rw-r--r--ib_verbs.h100225log plain -rw-r--r--iw_cm.h8793log plain -rw-r--r--iw_portmap.h7688log plain -rw-r--r--mr_pool.h954log plain -rw-r--r--opa_port_info.h15063log plain -rw-r--r--opa_smi.h4417log plain