drivers/w1/w1_family.h

   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 */