1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net> |
4 | */ |
5 | |
6 | #ifndef __W1_H |
7 | #define __W1_H |
8 | |
9 | #include <linux/w1.h> |
10 | |
11 | #include <linux/completion.h> |
12 | #include <linux/mutex.h> |
13 | |
14 | #define W1_SLAVE_ACTIVE 0 |
15 | #define W1_SLAVE_DETACH 1 |
16 | |
17 | /** |
18 | * struct w1_async_cmd - execute callback from the w1_process kthread |
19 | * @async_entry: link entry |
20 | * @cb: callback function, must list_del and destroy this list before |
21 | * returning |
22 | * |
23 | * When inserted into the w1_master async_list, w1_process will execute |
24 | * the callback. Embed this into the structure with the command details. |
25 | */ |
26 | struct w1_async_cmd { |
27 | struct list_head async_entry; |
28 | void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd); |
29 | }; |
30 | |
31 | int w1_create_master_attributes(struct w1_master *master); |
32 | void w1_destroy_master_attributes(struct w1_master *master); |
33 | void w1_search(struct w1_master *dev, u8 search_type, |
34 | w1_slave_found_callback cb); |
35 | void 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 */ |
38 | struct w1_slave *w1_search_slave(struct w1_reg_num *id); |
39 | /* |
40 | * decrements the reference on sl->master and sl, and cleans up if zero |
41 | * returns the reference count after it has been decremented |
42 | */ |
43 | int w1_unref_slave(struct w1_slave *sl); |
44 | void w1_slave_found(struct w1_master *dev, u64 rn); |
45 | void w1_search_process_cb(struct w1_master *dev, u8 search_type, |
46 | w1_slave_found_callback cb); |
47 | struct w1_slave *w1_slave_search_device(struct w1_master *dev, |
48 | struct w1_reg_num *rn); |
49 | struct w1_master *w1_search_master_id(u32 id); |
50 | |
51 | /* Disconnect and reconnect devices in the given family. Used for finding |
52 | * unclaimed devices after a family has been registered or releasing devices |
53 | * after a family has been unregistered. Set attach to 1 when a new family |
54 | * has just been registered, to 0 when it has been unregistered. |
55 | */ |
56 | void w1_reconnect_slaves(struct w1_family *f, int attach); |
57 | int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn); |
58 | /* 0 success, otherwise EBUSY */ |
59 | int w1_slave_detach(struct w1_slave *sl); |
60 | |
61 | void __w1_remove_master_device(struct w1_master *dev); |
62 | |
63 | void w1_family_put(struct w1_family *f); |
64 | void __w1_family_get(struct w1_family *f); |
65 | struct w1_family *w1_family_registered(u8 fid); |
66 | |
67 | extern struct device_driver w1_master_driver; |
68 | extern struct device w1_master_device; |
69 | extern int w1_max_slave_count; |
70 | extern int w1_max_slave_ttl; |
71 | extern struct list_head w1_masters; |
72 | extern struct mutex w1_mlock; |
73 | extern spinlock_t w1_flock; |
74 | |
75 | int w1_process_callbacks(struct w1_master *dev); |
76 | int w1_process(void *data); |
77 | |
78 | #endif /* __W1_H */ |
79 | |