diff options
Diffstat (limited to 'drivers/w1/w1.h')
| -rw-r--r-- | drivers/w1/w1.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h new file mode 100644 index 000000000000..abbddaf3f8e2 --- /dev/null +++ b/drivers/w1/w1.h @@ -0,0 +1,145 @@ +/* + * w1.h + * + * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __W1_H +#define __W1_H + +struct w1_reg_num +{ +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u64 family:8, + id:48, + crc:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u64 crc:8, + id:48, + family:8; +#else +#error "Please fix <asm/byteorder.h>" +#endif +}; + +#ifdef __KERNEL__ + +#include <linux/completion.h> +#include <linux/device.h> + +#include <net/sock.h> + +#include <asm/semaphore.h> + +#include "w1_family.h" + +#define W1_MAXNAMELEN 32 +#define W1_SLAVE_DATA_SIZE 128 + +#define W1_SEARCH 0xF0 +#define W1_CONDITIONAL_SEARCH 0xEC +#define W1_CONVERT_TEMP 0x44 +#define W1_SKIP_ROM 0xCC +#define W1_READ_SCRATCHPAD 0xBE +#define W1_READ_ROM 0x33 +#define W1_READ_PSUPPLY 0xB4 +#define W1_MATCH_ROM 0x55 + +#define W1_SLAVE_ACTIVE (1<<0) + +struct w1_slave +{ + struct module *owner; + unsigned char name[W1_MAXNAMELEN]; + struct list_head w1_slave_entry; + struct w1_reg_num reg_num; + atomic_t refcnt; + u8 rom[9]; + u32 flags; + int ttl; + + struct w1_master *master; + struct w1_family *family; + struct device dev; + struct completion dev_released; + + struct bin_attribute attr_bin; + struct device_attribute attr_name, attr_val; +}; + +typedef void (* w1_slave_found_callback)(unsigned long, u64); + +struct w1_bus_master +{ + unsigned long data; + + u8 (*read_bit)(unsigned long); + void (*write_bit)(unsigned long, u8); + + u8 (*read_byte)(unsigned long); + void (*write_byte)(unsigned long, u8); + + u8 (*read_block)(unsigned long, u8 *, int); + void (*write_block)(unsigned long, u8 *, int); + + u8 (*touch_bit)(unsigned long, u8); + + u8 (*reset_bus)(unsigned long); + + void (*search)(unsigned long, w1_slave_found_callback); +}; + +struct w1_master +{ + struct list_head w1_master_entry; + struct module *owner; + unsigned char name[W1_MAXNAMELEN]; + struct list_head slist; + int max_slave_count, slave_count; + unsigned long attempts; + int slave_ttl; + int initialized; + u32 id; + + atomic_t refcnt; + + void *priv; + int priv_size; + + int need_exit; + pid_t kpid; + struct semaphore mutex; + + struct device_driver *driver; + struct device dev; + struct completion dev_released; + struct completion dev_exited; + + struct w1_bus_master *bus_master; + + u32 seq, groups; + struct sock *nls; +}; + +int w1_create_master_attributes(struct w1_master *); +void w1_destroy_master_attributes(struct w1_master *); +void w1_search(struct w1_master *dev); + +#endif /* __KERNEL__ */ + +#endif /* __W1_H */ |