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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134/* SPDX-License-Identifier: GPL-2.0 */#ifndef COMPONENT_H#define COMPONENT_H
#include <linux/stddef.h>#include <linux/types.h>
struct device;
/** * struct component_ops - callbacks for component drivers * * Components are registered with component_add() and unregistered with * component_del(). */struct component_ops { /** * @bind: * * Called through component_bind_all() when the aggregate driver is * ready to bind the overall driver. */ int (*bind)(struct device *comp, struct device *master, void *master_data); /** * @unbind: * * Called through component_unbind_all() when the aggregate driver is * ready to bind the overall driver, or when component_bind_all() fails * part-ways through and needs to unbind some already bound components. */ void (*unbind)(struct device *comp, struct device *master, void *master_data);};
int component_add(struct device *, const struct component_ops *);int component_add_typed(struct device *dev, const struct component_ops *ops, int subcomponent);void component_del(struct device *, const struct component_ops *);
int component_bind_all(struct device *parent, void *data);void component_unbind_all(struct device *parent, void *data);
struct aggregate_device;
/** * struct component_master_ops - callback for the aggregate driver * * Aggregate drivers are registered with component_master_add_with_match() and * unregistered with component_master_del(). */struct component_master_ops { /** * @bind: * * Called when all components or the aggregate driver, as specified in * the match list passed to component_master_add_with_match(), are * ready. Usually there are 3 steps to bind an aggregate driver: * * 1. Allocate a structure for the aggregate driver. * * 2. Bind all components to the aggregate driver by calling * component_bind_all() with the aggregate driver structure as opaque * pointer data. * * 3. Register the aggregate driver with the subsystem to publish its * interfaces. * * Note that the lifetime of the aggregate driver does not align with * any of the underlying &struct device instances. Therefore devm cannot * be used and all resources acquired or allocated in this callback must * be explicitly released in the @unbind callback. */ int (*bind)(struct device *master); /** * @unbind: * * Called when either the aggregate driver, using * component_master_del(), or one of its components, using * component_del(), is unregistered. */ void (*unbind)(struct device *master);};
/* A set helper functions for component compare/release */int component_compare_of(struct device *dev, void *data);void component_release_of(struct device *dev, void *data);int component_compare_dev(struct device *dev, void *data);int component_compare_dev_name(struct device *dev, void *data);
void component_master_del(struct device *, const struct component_master_ops *);bool component_master_is_bound(struct device *parent, const struct component_master_ops *ops);
struct component_match;
int component_master_add_with_match(struct device *, const struct component_master_ops *, struct component_match *);void component_match_add_release(struct device *parent, struct component_match **matchptr, void (*release)(struct device *, void *), int (*compare)(struct device *, void *), void *compare_data);void component_match_add_typed(struct device *parent, struct component_match **matchptr, int (*compare_typed)(struct device *, int, void *), void *compare_data);
/** * component_match_add - add a component match entry * @parent: device with the aggregate driver * @matchptr: pointer to the list of component matches * @compare: compare function to match against all components * @compare_data: opaque pointer passed to the @compare function * * Adds a new component match to the list stored in @matchptr, which the @parent * aggregate driver needs to function. The list of component matches pointed to * by @matchptr must be initialized to NULL before adding the first match. This * only matches against components added with component_add(). * * The allocated match list in @matchptr is automatically released using devm * actions. * * See also component_match_add_release() and component_match_add_typed(). */static inline void component_match_add(struct device *parent, struct component_match **matchptr, int (*compare)(struct device *, void *), void *compare_data){ component_match_add_release(parent, matchptr, NULL, compare, compare_data);}
#endif