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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>4 */5 6#ifndef __W1_H7#define __W1_H8 9#include <linux/w1.h>10 11#include <linux/completion.h>12#include <linux/mutex.h>13 14#define W1_SLAVE_ACTIVE 015#define W1_SLAVE_DETACH 116 17/**18 * struct w1_async_cmd - execute callback from the w1_process kthread19 * @async_entry: link entry20 * @cb: callback function, must list_del and destroy this list before21 * returning22 *23 * When inserted into the w1_master async_list, w1_process will execute24 * the callback. Embed this into the structure with the command details.25 */26struct w1_async_cmd {27 struct list_head async_entry;28 void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd);29};30 31int w1_create_master_attributes(struct w1_master *master);32void w1_destroy_master_attributes(struct w1_master *master);33void w1_search(struct w1_master *dev, u8 search_type,34 w1_slave_found_callback cb);35void w1_search_devices(struct w1_master *dev, u8 search_type,36 w1_slave_found_callback cb);37/* call w1_unref_slave to release the reference counts w1_search_slave added */38struct w1_slave *w1_search_slave(struct w1_reg_num *id);39/*40 * decrements the reference on sl->master and sl, and cleans up if zero41 * returns the reference count after it has been decremented42 */43int w1_unref_slave(struct w1_slave *sl);44void w1_slave_found(struct w1_master *dev, u64 rn);45void w1_search_process_cb(struct w1_master *dev, u8 search_type,46 w1_slave_found_callback cb);47struct w1_slave *w1_slave_search_device(struct w1_master *dev,48 struct w1_reg_num *rn);49struct w1_master *w1_search_master_id(u32 id);50 51/* Disconnect and reconnect devices in the given family. Used for finding52 * unclaimed devices after a family has been registered or releasing devices53 * after a family has been unregistered. Set attach to 1 when a new family54 * has just been registered, to 0 when it has been unregistered.55 */56void w1_reconnect_slaves(struct w1_family *f, int attach);57int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn);58/* 0 success, otherwise EBUSY */59int w1_slave_detach(struct w1_slave *sl);60 61void __w1_remove_master_device(struct w1_master *dev);62 63void w1_family_put(struct w1_family *f);64void __w1_family_get(struct w1_family *f);65struct w1_family *w1_family_registered(u8 fid);66 67extern struct device_driver w1_master_driver;68extern struct device w1_master_device;69extern int w1_max_slave_count;70extern int w1_max_slave_ttl;71extern struct list_head w1_masters;72extern struct mutex w1_mlock;73extern spinlock_t w1_flock;74 75int w1_process_callbacks(struct w1_master *dev);76int w1_process(void *data);77 78#endif /* __W1_H */79