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1da177e4 LT |
1 | /* |
2 | * w1_family.h | |
3 | * | |
4 | * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru> | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #ifndef __W1_FAMILY_H | |
23 | #define __W1_FAMILY_H | |
24 | ||
25 | #include <linux/types.h> | |
26 | #include <linux/device.h> | |
27 | #include <asm/atomic.h> | |
28 | ||
29 | #define W1_FAMILY_DEFAULT 0 | |
30 | #define W1_FAMILY_THERM 0x10 | |
31 | #define W1_FAMILY_SMEM 0x01 | |
32 | ||
33 | #define MAXNAMELEN 32 | |
34 | ||
35 | struct w1_family_ops | |
36 | { | |
37 | ssize_t (* rname)(struct device *, char *); | |
38 | ssize_t (* rbin)(struct kobject *, char *, loff_t, size_t); | |
39 | ||
40 | ssize_t (* rval)(struct device *, char *); | |
41 | unsigned char rvalname[MAXNAMELEN]; | |
42 | }; | |
43 | ||
44 | struct w1_family | |
45 | { | |
46 | struct list_head family_entry; | |
47 | u8 fid; | |
48 | ||
49 | struct w1_family_ops *fops; | |
50 | ||
51 | atomic_t refcnt; | |
52 | u8 need_exit; | |
53 | }; | |
54 | ||
55 | extern spinlock_t w1_flock; | |
56 | ||
57 | void w1_family_get(struct w1_family *); | |
58 | void w1_family_put(struct w1_family *); | |
59 | void __w1_family_get(struct w1_family *); | |
60 | void __w1_family_put(struct w1_family *); | |
61 | struct w1_family * w1_family_registered(u8); | |
62 | void w1_unregister_family(struct w1_family *); | |
63 | int w1_register_family(struct w1_family *); | |
64 | ||
65 | #endif /* __W1_FAMILY_H */ |