S: Maintained
F: Documentation/w1/
F: drivers/w1/
+F: include/linux/w1.h
W83791D HARDWARE MONITORING DRIVER
M: Marc Hulsman <m.hulsman@tudelft.nl>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
-#include "../../w1/w1.h"
+#include <linux/w1.h>
#include "../../w1/slaves/w1_ds2760.h"
struct ds2760_device_info {
#include <linux/power_supply.h>
#include <linux/idr.h>
-#include "../../w1/w1.h"
+#include <linux/w1.h>
#include "../../w1/slaves/w1_ds2780.h"
/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
#include <linux/power_supply.h>
#include <linux/idr.h>
-#include "../../w1/w1.h"
+#include <linux/w1.h>
#include "../../w1/slaves/w1_ds2781.h"
/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
#include <asm/io.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
#define DS1WM_CMD 0x00 /* R/W 4 bits command */
#include <linux/delay.h>
#include <asm/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/**
* Allow the active pullup to be disabled, default is enabled.
#include <linux/usb.h>
#include <linux/slab.h>
-#include "../w1_int.h"
-#include "../w1.h"
+#include <linux/w1.h>
/* USB Standard */
/* USB Control request vendor type */
#include <linux/pci_ids.h>
#include <linux/pci.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/*
* Matrox G400 DDC registers.
#include <linux/module.h>
#include <linux/platform_device.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/*
* MXC W1 Register offsets
#include <linux/pm_runtime.h>
#include <linux/of.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
#define MOD_NAME "OMAP_HDQ:"
#include <linux/of.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
static u8 w1_gpio_set_pullup(void *data, int delay)
{
#include <linux/mutex.h>
#include <linux/power/bq27xxx_battery.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_BQ27000 0x01
#define HDQ_CMD_READ (0)
#define HDQ_CMD_WRITE (1<<7)
#include <linux/string.h>
#include <linux/types.h>
-#include "../w1.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2405 0x05
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Maciej S. Szmigiero <mail@maciej.szmigiero.name>");
#include <linux/slab.h>
#include <linux/crc16.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2406 0x12
#define W1_F12_FUNC_READ_STATUS 0xAA
#define W1_F12_FUNC_WRITE_STATUS 0x55
#include <linux/delay.h>
#include <linux/slab.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2408 0x29
#define W1_F29_RETRIES 3
#include <linux/delay.h>
#include <linux/slab.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2413 0x3A
#define W1_F3A_RETRIES 3
#define W1_F3A_FUNC_PIO_ACCESS_READ 0xF5
#include <linux/delay.h>
#include <linux/crc16.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_COUNTER_DS2423 0x1D
#define CRC16_VALID 0xb001
#define CRC16_INIT 0
#include <linux/types.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_EEPROM_DS2431 0x2D
#define W1_F2D_EEPROM_SIZE 128
#define W1_F2D_PAGE_COUNT 4
#endif
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_EEPROM_DS2433 0x23
#define W1_EEPROM_SIZE 512
#define W1_PAGE_COUNT 16
#include <linux/types.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2438 0x26
#define W1_DS2438_RETRIES 3
#include <linux/idr.h>
#include <linux/gfp.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#include "w1_ds2760.h"
+#define W1_FAMILY_DS2760 0x30
+
static int w1_ds2760_io(struct device *dev, char *buf, int addr, size_t count,
int io)
{
#include <linux/mutex.h>
#include <linux/idr.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#include "w1_ds2780.h"
+#define W1_FAMILY_DS2780 0x32
+
static int w1_ds2780_do_io(struct device *dev, char *buf, int addr,
size_t count, int io)
{
#include <linux/platform_device.h>
#include <linux/mutex.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#include "w1_ds2781.h"
+#define W1_FAMILY_DS2781 0x3D
+
static int w1_ds2781_do_io(struct device *dev, char *buf, int addr,
size_t count, int io)
{
#define CRC16_INIT 0
#define CRC16_VALID 0xb001
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS28E04 0x1C
/* Allow the strong pullup to be disabled, but default to enabled.
* If it was disabled a parasite powered device might not get the required
#include <linux/device.h>
#include <linux/types.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_SMEM_01 0x01
+#define W1_FAMILY_SMEM_81 0x81
static struct w1_family w1_smem_family_01 = {
.fid = W1_FAMILY_SMEM_01,
#include <linux/slab.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_THERM_DS18S20 0x10
+#define W1_THERM_DS1822 0x22
+#define W1_THERM_DS18B20 0x28
+#define W1_THERM_DS1825 0x3B
+#define W1_THERM_DS28EA00 0x42
/* Allow the strong pullup to be disabled, but default to enabled.
* If it was disabled a parasite powered device might not get the require
#include <linux/atomic.h>
-#include "w1.h"
-#include "w1_int.h"
-#include "w1_family.h"
+#include "w1_internal.h"
#include "w1_netlink.h"
+#define W1_FAMILY_DEFAULT 0
+
static int w1_timeout = 10;
module_param_named(timeout, w1_timeout, int, 0);
MODULE_PARM_DESC(timeout, "time in seconds between automatic slave searches");
+++ /dev/null
-/*
- * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * 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.
- */
-
-#ifndef __W1_H
-#define __W1_H
-
-/**
- * struct w1_reg_num - broken out slave device id
- *
- * @family: identifies the type of device
- * @id: along with family is the unique device id
- * @crc: checksum of the other bytes
- */
-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 <linux/mutex.h>
-
-#include "w1_family.h"
-
-#define W1_MAXNAMELEN 32
-
-#define W1_SEARCH 0xF0
-#define W1_ALARM_SEARCH 0xEC
-#define W1_CONVERT_TEMP 0x44
-#define W1_SKIP_ROM 0xCC
-#define W1_COPY_SCRATCHPAD 0x48
-#define W1_WRITE_SCRATCHPAD 0x4E
-#define W1_READ_SCRATCHPAD 0xBE
-#define W1_READ_ROM 0x33
-#define W1_READ_PSUPPLY 0xB4
-#define W1_MATCH_ROM 0x55
-#define W1_RESUME_CMD 0xA5
-
-#define W1_SLAVE_ACTIVE 0
-#define W1_SLAVE_DETACH 1
-
-/**
- * struct w1_slave - holds a single slave device on the bus
- *
- * @owner: Points to the one wire "wire" kernel module.
- * @name: Device id is ascii.
- * @w1_slave_entry: data for the linked list
- * @reg_num: the slave id in binary
- * @refcnt: reference count, delete when 0
- * @flags: bit flags for W1_SLAVE_ACTIVE W1_SLAVE_DETACH
- * @ttl: decrement per search this slave isn't found, deatch at 0
- * @master: bus which this slave is on
- * @family: module for device family type
- * @family_data: pointer for use by the family module
- * @dev: kernel device identifier
- *
- */
-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;
- int ttl;
- unsigned long flags;
-
- struct w1_master *master;
- struct w1_family *family;
- void *family_data;
- struct device dev;
-};
-
-typedef void (*w1_slave_found_callback)(struct w1_master *, u64);
-
-
-/**
- * struct w1_bus_master - operations available on a bus master
- *
- * @data: the first parameter in all the functions below
- *
- * @read_bit: Sample the line level @return the level read (0 or 1)
- *
- * @write_bit: Sets the line level
- *
- * @touch_bit: the lowest-level function for devices that really support the
- * 1-wire protocol.
- * touch_bit(0) = write-0 cycle
- * touch_bit(1) = write-1 / read cycle
- * @return the bit read (0 or 1)
- *
- * @read_byte: Reads a bytes. Same as 8 touch_bit(1) calls.
- * @return the byte read
- *
- * @write_byte: Writes a byte. Same as 8 touch_bit(x) calls.
- *
- * @read_block: Same as a series of read_byte() calls
- * @return the number of bytes read
- *
- * @write_block: Same as a series of write_byte() calls
- *
- * @triplet: Combines two reads and a smart write for ROM searches
- * @return bit0=Id bit1=comp_id bit2=dir_taken
- *
- * @reset_bus: long write-0 with a read for the presence pulse detection
- * @return -1=Error, 0=Device present, 1=No device present
- *
- * @set_pullup: Put out a strong pull-up pulse of the specified duration.
- * @return -1=Error, 0=completed
- *
- * @search: Really nice hardware can handles the different types of ROM search
- * w1_master* is passed to the slave found callback.
- * u8 is search_type, W1_SEARCH or W1_ALARM_SEARCH
- *
- * Note: read_bit and write_bit are very low level functions and should only
- * be used with hardware that doesn't really support 1-wire operations,
- * like a parallel/serial port.
- * Either define read_bit and write_bit OR define, at minimum, touch_bit and
- * reset_bus.
- *
- */
-struct w1_bus_master
-{
- void *data;
-
- u8 (*read_bit)(void *);
-
- void (*write_bit)(void *, u8);
-
- u8 (*touch_bit)(void *, u8);
-
- u8 (*read_byte)(void *);
-
- void (*write_byte)(void *, u8);
-
- u8 (*read_block)(void *, u8 *, int);
-
- void (*write_block)(void *, const u8 *, int);
-
- u8 (*triplet)(void *, u8);
-
- u8 (*reset_bus)(void *);
-
- u8 (*set_pullup)(void *, int);
-
- void (*search)(void *, struct w1_master *,
- u8, w1_slave_found_callback);
-};
-
-/**
- * enum w1_master_flags - bitfields used in w1_master.flags
- * @W1_ABORT_SEARCH: abort searching early on shutdown
- * @W1_WARN_MAX_COUNT: limit warning when the maximum count is reached
- */
-enum w1_master_flags {
- W1_ABORT_SEARCH = 0,
- W1_WARN_MAX_COUNT = 1,
-};
-
-/**
- * struct w1_master - one per bus master
- * @w1_master_entry: master linked list
- * @owner: module owner
- * @name: dynamically allocate bus name
- * @list_mutex: protect slist and async_list
- * @slist: linked list of slaves
- * @async_list: linked list of netlink commands to execute
- * @max_slave_count: maximum number of slaves to search for at a time
- * @slave_count: current number of slaves known
- * @attempts: number of searches ran
- * @slave_ttl: number of searches before a slave is timed out
- * @initialized: prevent init/removal race conditions
- * @id: w1 bus number
- * @search_count: number of automatic searches to run, -1 unlimited
- * @search_id: allows continuing a search
- * @refcnt: reference count
- * @priv: private data storage
- * @enable_pullup: allows a strong pullup
- * @pullup_duration: time for the next strong pullup
- * @flags: one of w1_master_flags
- * @thread: thread for bus search and netlink commands
- * @mutex: protect most of w1_master
- * @bus_mutex: pretect concurrent bus access
- * @driver: sysfs driver
- * @dev: sysfs device
- * @bus_master: io operations available
- * @seq: sequence number used for netlink broadcasts
- */
-struct w1_master
-{
- struct list_head w1_master_entry;
- struct module *owner;
- unsigned char name[W1_MAXNAMELEN];
- /* list_mutex protects just slist and async_list so slaves can be
- * searched for and async commands added while the master has
- * w1_master.mutex locked and is operating on the bus.
- * lock order w1_mlock, w1_master.mutex, w1_master.list_mutex
- */
- struct mutex list_mutex;
- struct list_head slist;
- struct list_head async_list;
- int max_slave_count, slave_count;
- unsigned long attempts;
- int slave_ttl;
- int initialized;
- u32 id;
- int search_count;
- /* id to start searching on, to continue a search or 0 to restart */
- u64 search_id;
-
- atomic_t refcnt;
-
- void *priv;
-
- /** 5V strong pullup enabled flag, 1 enabled, zero disabled. */
- int enable_pullup;
- /** 5V strong pullup duration in milliseconds, zero disabled. */
- int pullup_duration;
-
- long flags;
-
- struct task_struct *thread;
- struct mutex mutex;
- struct mutex bus_mutex;
-
- struct device_driver *driver;
- struct device dev;
-
- struct w1_bus_master *bus_master;
-
- u32 seq;
-};
-
-/**
- * struct w1_async_cmd - execute callback from the w1_process kthread
- * @async_entry: link entry
- * @cb: callback function, must list_del and destroy this list before
- * returning
- *
- * When inserted into the w1_master async_list, w1_process will execute
- * the callback. Embed this into the structure with the command details.
- */
-struct w1_async_cmd {
- struct list_head async_entry;
- void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd);
-};
-
-int w1_create_master_attributes(struct w1_master *);
-void w1_destroy_master_attributes(struct w1_master *master);
-void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb);
-void w1_search_devices(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb);
-/* call w1_unref_slave to release the reference counts w1_search_slave added */
-struct w1_slave *w1_search_slave(struct w1_reg_num *id);
-/* decrements the reference on sl->master and sl, and cleans up if zero
- * returns the reference count after it has been decremented */
-int w1_unref_slave(struct w1_slave *sl);
-void w1_slave_found(struct w1_master *dev, u64 rn);
-void w1_search_process_cb(struct w1_master *dev, u8 search_type,
- w1_slave_found_callback cb);
-struct w1_slave *w1_slave_search_device(struct w1_master *dev,
- struct w1_reg_num *rn);
-struct w1_master *w1_search_master_id(u32 id);
-
-/* Disconnect and reconnect devices in the given family. Used for finding
- * unclaimed devices after a family has been registered or releasing devices
- * after a family has been unregistered. Set attach to 1 when a new family
- * has just been registered, to 0 when it has been unregistered.
- */
-void w1_reconnect_slaves(struct w1_family *f, int attach);
-int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn);
-/* 0 success, otherwise EBUSY */
-int w1_slave_detach(struct w1_slave *sl);
-
-u8 w1_triplet(struct w1_master *dev, int bdir);
-void w1_write_8(struct w1_master *, u8);
-u8 w1_read_8(struct w1_master *);
-int w1_reset_bus(struct w1_master *);
-u8 w1_calc_crc8(u8 *, int);
-void w1_write_block(struct w1_master *, const u8 *, int);
-void w1_touch_block(struct w1_master *, u8 *, int);
-u8 w1_read_block(struct w1_master *, u8 *, int);
-int w1_reset_select_slave(struct w1_slave *sl);
-int w1_reset_resume_command(struct w1_master *);
-void w1_next_pullup(struct w1_master *, int);
-
-static inline struct w1_slave* dev_to_w1_slave(struct device *dev)
-{
- return container_of(dev, struct w1_slave, dev);
-}
-
-static inline struct w1_slave* kobj_to_w1_slave(struct kobject *kobj)
-{
- return dev_to_w1_slave(container_of(kobj, struct device, kobj));
-}
-
-static inline struct w1_master* dev_to_w1_master(struct device *dev)
-{
- return container_of(dev, struct w1_master, dev);
-}
-
-extern struct device_driver w1_master_driver;
-extern struct device w1_master_device;
-extern int w1_max_slave_count;
-extern int w1_max_slave_ttl;
-extern struct list_head w1_masters;
-extern struct mutex w1_mlock;
-
-extern int w1_process_callbacks(struct w1_master *dev);
-extern int w1_process(void *);
-
-#endif /* __KERNEL__ */
-
-#endif /* __W1_H */
#include <linux/delay.h>
#include <linux/export.h>
-#include "w1_family.h"
-#include "w1.h"
+#include "w1_internal.h"
DEFINE_SPINLOCK(w1_flock);
static LIST_HEAD(w1_families);
+++ /dev/null
-/*
- * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * 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.
- */
-
-#ifndef __W1_FAMILY_H
-#define __W1_FAMILY_H
-
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/atomic.h>
-
-#define W1_FAMILY_DEFAULT 0
-#define W1_FAMILY_BQ27000 0x01
-#define W1_FAMILY_SMEM_01 0x01
-#define W1_FAMILY_SMEM_81 0x81
-#define W1_FAMILY_DS2405 0x05
-#define W1_THERM_DS18S20 0x10
-#define W1_FAMILY_DS28E04 0x1C
-#define W1_COUNTER_DS2423 0x1D
-#define W1_THERM_DS1822 0x22
-#define W1_EEPROM_DS2433 0x23
-#define W1_FAMILY_DS2438 0x26
-#define W1_THERM_DS18B20 0x28
-#define W1_FAMILY_DS2408 0x29
-#define W1_EEPROM_DS2431 0x2D
-#define W1_FAMILY_DS2760 0x30
-#define W1_FAMILY_DS2780 0x32
-#define W1_FAMILY_DS2413 0x3A
-#define W1_FAMILY_DS2406 0x12
-#define W1_THERM_DS1825 0x3B
-#define W1_FAMILY_DS2781 0x3D
-#define W1_THERM_DS28EA00 0x42
-
-#define MAXNAMELEN 32
-
-struct w1_slave;
-
-/**
- * struct w1_family_ops - operations for a family type
- * @add_slave: add_slave
- * @remove_slave: remove_slave
- * @groups: sysfs group
- */
-struct w1_family_ops
-{
- int (* add_slave)(struct w1_slave *);
- void (* remove_slave)(struct w1_slave *);
- const struct attribute_group **groups;
-};
-
-/**
- * struct w1_family - reference counted family structure.
- * @family_entry: family linked list
- * @fid: 8 bit family identifier
- * @fops: operations for this family
- * @refcnt: reference counter
- */
-struct w1_family
-{
- struct list_head family_entry;
- u8 fid;
-
- struct w1_family_ops *fops;
-
- atomic_t refcnt;
-};
-
-extern spinlock_t w1_flock;
-
-void w1_family_put(struct w1_family *);
-void __w1_family_get(struct w1_family *);
-struct w1_family * w1_family_registered(u8);
-void w1_unregister_family(struct w1_family *);
-int w1_register_family(struct w1_family *);
-
-/**
- * module_w1_driver() - Helper macro for registering a 1-Wire families
- * @__w1_family: w1_family struct
- *
- * Helper macro for 1-Wire families which do not do anything special in module
- * init/exit. This eliminates a lot of boilerplate. Each module may only
- * use this macro once, and calling it replaces module_init() and module_exit()
- */
-#define module_w1_family(__w1_family) \
- module_driver(__w1_family, w1_register_family, \
- w1_unregister_family)
-
-#endif /* __W1_FAMILY_H */
#include <linux/export.h>
#include <linux/moduleparam.h>
-#include "w1.h"
+#include "w1_internal.h"
#include "w1_netlink.h"
-#include "w1_int.h"
static int w1_search_count = -1; /* Default is continual scan */
module_param_named(search_count, w1_search_count, int, 0);
+++ /dev/null
-/*
- * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
- *
- * 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.
- */
-
-#ifndef __W1_INT_H
-#define __W1_INT_H
-
-#include <linux/kernel.h>
-#include <linux/device.h>
-
-#include "w1.h"
-
-int w1_add_master_device(struct w1_bus_master *);
-void w1_remove_master_device(struct w1_bus_master *);
-void __w1_remove_master_device(struct w1_master *);
-
-#endif /* __W1_INT_H */
--- /dev/null
+/*
+ * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
+ *
+ * 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.
+ */
+
+#ifndef __W1_H
+#define __W1_H
+
+#include <linux/w1.h>
+
+#include <linux/completion.h>
+#include <linux/mutex.h>
+
+#define W1_SLAVE_ACTIVE 0
+#define W1_SLAVE_DETACH 1
+
+/**
+ * struct w1_async_cmd - execute callback from the w1_process kthread
+ * @async_entry: link entry
+ * @cb: callback function, must list_del and destroy this list before
+ * returning
+ *
+ * When inserted into the w1_master async_list, w1_process will execute
+ * the callback. Embed this into the structure with the command details.
+ */
+struct w1_async_cmd {
+ struct list_head async_entry;
+ void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd);
+};
+
+int w1_create_master_attributes(struct w1_master *master);
+void w1_destroy_master_attributes(struct w1_master *master);
+void w1_search(struct w1_master *dev, u8 search_type,
+ w1_slave_found_callback cb);
+void w1_search_devices(struct w1_master *dev, u8 search_type,
+ w1_slave_found_callback cb);
+/* call w1_unref_slave to release the reference counts w1_search_slave added */
+struct w1_slave *w1_search_slave(struct w1_reg_num *id);
+/*
+ * decrements the reference on sl->master and sl, and cleans up if zero
+ * returns the reference count after it has been decremented
+ */
+int w1_unref_slave(struct w1_slave *sl);
+void w1_slave_found(struct w1_master *dev, u64 rn);
+void w1_search_process_cb(struct w1_master *dev, u8 search_type,
+ w1_slave_found_callback cb);
+struct w1_slave *w1_slave_search_device(struct w1_master *dev,
+ struct w1_reg_num *rn);
+struct w1_master *w1_search_master_id(u32 id);
+
+/* Disconnect and reconnect devices in the given family. Used for finding
+ * unclaimed devices after a family has been registered or releasing devices
+ * after a family has been unregistered. Set attach to 1 when a new family
+ * has just been registered, to 0 when it has been unregistered.
+ */
+void w1_reconnect_slaves(struct w1_family *f, int attach);
+int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn);
+/* 0 success, otherwise EBUSY */
+int w1_slave_detach(struct w1_slave *sl);
+
+void __w1_remove_master_device(struct w1_master *dev);
+
+void w1_family_put(struct w1_family *f);
+void __w1_family_get(struct w1_family *f);
+struct w1_family *w1_family_registered(u8 fid);
+
+extern struct device_driver w1_master_driver;
+extern struct device w1_master_device;
+extern int w1_max_slave_count;
+extern int w1_max_slave_ttl;
+extern struct list_head w1_masters;
+extern struct mutex w1_mlock;
+extern spinlock_t w1_flock;
+
+int w1_process_callbacks(struct w1_master *dev);
+int w1_process(void *data);
+
+#endif /* __W1_H */
#include <linux/moduleparam.h>
#include <linux/module.h>
-#include "w1.h"
+#include "w1_internal.h"
static int w1_delay_parm = 1;
module_param_named(delay_coef, w1_delay_parm, int, 0);
#include <linux/netlink.h>
#include <linux/connector.h>
-#include "w1.h"
+#include "w1_internal.h"
#include "w1_netlink.h"
#if defined(CONFIG_W1_CON) && (defined(CONFIG_CONNECTOR) || (defined(CONFIG_CONNECTOR_MODULE) && defined(CONFIG_W1_MODULE)))
#include <asm/types.h>
#include <linux/connector.h>
-#include "w1.h"
+#include "w1_internal.h"
/**
* enum w1_cn_msg_flags - bitfield flags for struct cn_msg.flags
--- /dev/null
+/*
+ * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_W1_H
+#define __LINUX_W1_H
+
+#include <linux/device.h>
+
+/**
+ * struct w1_reg_num - broken out slave device id
+ *
+ * @family: identifies the type of device
+ * @id: along with family is the unique device id
+ * @crc: checksum of the other bytes
+ */
+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__
+
+#define W1_MAXNAMELEN 32
+
+#define W1_SEARCH 0xF0
+#define W1_ALARM_SEARCH 0xEC
+#define W1_CONVERT_TEMP 0x44
+#define W1_SKIP_ROM 0xCC
+#define W1_COPY_SCRATCHPAD 0x48
+#define W1_WRITE_SCRATCHPAD 0x4E
+#define W1_READ_SCRATCHPAD 0xBE
+#define W1_READ_ROM 0x33
+#define W1_READ_PSUPPLY 0xB4
+#define W1_MATCH_ROM 0x55
+#define W1_RESUME_CMD 0xA5
+
+/**
+ * struct w1_slave - holds a single slave device on the bus
+ *
+ * @owner: Points to the one wire "wire" kernel module.
+ * @name: Device id is ascii.
+ * @w1_slave_entry: data for the linked list
+ * @reg_num: the slave id in binary
+ * @refcnt: reference count, delete when 0
+ * @flags: bit flags for W1_SLAVE_ACTIVE W1_SLAVE_DETACH
+ * @ttl: decrement per search this slave isn't found, deatch at 0
+ * @master: bus which this slave is on
+ * @family: module for device family type
+ * @family_data: pointer for use by the family module
+ * @dev: kernel device identifier
+ *
+ */
+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;
+ int ttl;
+ unsigned long flags;
+
+ struct w1_master *master;
+ struct w1_family *family;
+ void *family_data;
+ struct device dev;
+};
+
+typedef void (*w1_slave_found_callback)(struct w1_master *, u64);
+
+/**
+ * struct w1_bus_master - operations available on a bus master
+ *
+ * @data: the first parameter in all the functions below
+ *
+ * @read_bit: Sample the line level @return the level read (0 or 1)
+ *
+ * @write_bit: Sets the line level
+ *
+ * @touch_bit: the lowest-level function for devices that really support the
+ * 1-wire protocol.
+ * touch_bit(0) = write-0 cycle
+ * touch_bit(1) = write-1 / read cycle
+ * @return the bit read (0 or 1)
+ *
+ * @read_byte: Reads a bytes. Same as 8 touch_bit(1) calls.
+ * @return the byte read
+ *
+ * @write_byte: Writes a byte. Same as 8 touch_bit(x) calls.
+ *
+ * @read_block: Same as a series of read_byte() calls
+ * @return the number of bytes read
+ *
+ * @write_block: Same as a series of write_byte() calls
+ *
+ * @triplet: Combines two reads and a smart write for ROM searches
+ * @return bit0=Id bit1=comp_id bit2=dir_taken
+ *
+ * @reset_bus: long write-0 with a read for the presence pulse detection
+ * @return -1=Error, 0=Device present, 1=No device present
+ *
+ * @set_pullup: Put out a strong pull-up pulse of the specified duration.
+ * @return -1=Error, 0=completed
+ *
+ * @search: Really nice hardware can handles the different types of ROM search
+ * w1_master* is passed to the slave found callback.
+ * u8 is search_type, W1_SEARCH or W1_ALARM_SEARCH
+ *
+ * Note: read_bit and write_bit are very low level functions and should only
+ * be used with hardware that doesn't really support 1-wire operations,
+ * like a parallel/serial port.
+ * Either define read_bit and write_bit OR define, at minimum, touch_bit and
+ * reset_bus.
+ *
+ */
+struct w1_bus_master {
+ void *data;
+
+ u8 (*read_bit)(void *);
+
+ void (*write_bit)(void *, u8);
+
+ u8 (*touch_bit)(void *, u8);
+
+ u8 (*read_byte)(void *);
+
+ void (*write_byte)(void *, u8);
+
+ u8 (*read_block)(void *, u8 *, int);
+
+ void (*write_block)(void *, const u8 *, int);
+
+ u8 (*triplet)(void *, u8);
+
+ u8 (*reset_bus)(void *);
+
+ u8 (*set_pullup)(void *, int);
+
+ void (*search)(void *, struct w1_master *,
+ u8, w1_slave_found_callback);
+};
+
+/**
+ * enum w1_master_flags - bitfields used in w1_master.flags
+ * @W1_ABORT_SEARCH: abort searching early on shutdown
+ * @W1_WARN_MAX_COUNT: limit warning when the maximum count is reached
+ */
+enum w1_master_flags {
+ W1_ABORT_SEARCH = 0,
+ W1_WARN_MAX_COUNT = 1,
+};
+
+/**
+ * struct w1_master - one per bus master
+ * @w1_master_entry: master linked list
+ * @owner: module owner
+ * @name: dynamically allocate bus name
+ * @list_mutex: protect slist and async_list
+ * @slist: linked list of slaves
+ * @async_list: linked list of netlink commands to execute
+ * @max_slave_count: maximum number of slaves to search for at a time
+ * @slave_count: current number of slaves known
+ * @attempts: number of searches ran
+ * @slave_ttl: number of searches before a slave is timed out
+ * @initialized: prevent init/removal race conditions
+ * @id: w1 bus number
+ * @search_count: number of automatic searches to run, -1 unlimited
+ * @search_id: allows continuing a search
+ * @refcnt: reference count
+ * @priv: private data storage
+ * @enable_pullup: allows a strong pullup
+ * @pullup_duration: time for the next strong pullup
+ * @flags: one of w1_master_flags
+ * @thread: thread for bus search and netlink commands
+ * @mutex: protect most of w1_master
+ * @bus_mutex: pretect concurrent bus access
+ * @driver: sysfs driver
+ * @dev: sysfs device
+ * @bus_master: io operations available
+ * @seq: sequence number used for netlink broadcasts
+ */
+struct w1_master {
+ struct list_head w1_master_entry;
+ struct module *owner;
+ unsigned char name[W1_MAXNAMELEN];
+ /* list_mutex protects just slist and async_list so slaves can be
+ * searched for and async commands added while the master has
+ * w1_master.mutex locked and is operating on the bus.
+ * lock order w1_mlock, w1_master.mutex, w1_master.list_mutex
+ */
+ struct mutex list_mutex;
+ struct list_head slist;
+ struct list_head async_list;
+ int max_slave_count, slave_count;
+ unsigned long attempts;
+ int slave_ttl;
+ int initialized;
+ u32 id;
+ int search_count;
+ /* id to start searching on, to continue a search or 0 to restart */
+ u64 search_id;
+
+ atomic_t refcnt;
+
+ void *priv;
+
+ /** 5V strong pullup enabled flag, 1 enabled, zero disabled. */
+ int enable_pullup;
+ /** 5V strong pullup duration in milliseconds, zero disabled. */
+ int pullup_duration;
+
+ long flags;
+
+ struct task_struct *thread;
+ struct mutex mutex;
+ struct mutex bus_mutex;
+
+ struct device_driver *driver;
+ struct device dev;
+
+ struct w1_bus_master *bus_master;
+
+ u32 seq;
+};
+
+int w1_add_master_device(struct w1_bus_master *master);
+void w1_remove_master_device(struct w1_bus_master *master);
+
+/**
+ * struct w1_family_ops - operations for a family type
+ * @add_slave: add_slave
+ * @remove_slave: remove_slave
+ * @groups: sysfs group
+ */
+struct w1_family_ops {
+ int (*add_slave)(struct w1_slave *sl);
+ void (*remove_slave)(struct w1_slave *sl);
+ const struct attribute_group **groups;
+};
+
+/**
+ * struct w1_family - reference counted family structure.
+ * @family_entry: family linked list
+ * @fid: 8 bit family identifier
+ * @fops: operations for this family
+ * @refcnt: reference counter
+ */
+struct w1_family {
+ struct list_head family_entry;
+ u8 fid;
+
+ struct w1_family_ops *fops;
+
+ atomic_t refcnt;
+};
+
+int w1_register_family(struct w1_family *family);
+void w1_unregister_family(struct w1_family *family);
+
+/**
+ * module_w1_driver() - Helper macro for registering a 1-Wire families
+ * @__w1_family: w1_family struct
+ *
+ * Helper macro for 1-Wire families which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_w1_family(__w1_family) \
+ module_driver(__w1_family, w1_register_family, \
+ w1_unregister_family)
+
+u8 w1_triplet(struct w1_master *dev, int bdir);
+void w1_write_8(struct w1_master *, u8);
+u8 w1_read_8(struct w1_master *);
+int w1_reset_bus(struct w1_master *);
+u8 w1_calc_crc8(u8 *, int);
+void w1_write_block(struct w1_master *, const u8 *, int);
+void w1_touch_block(struct w1_master *, u8 *, int);
+u8 w1_read_block(struct w1_master *, u8 *, int);
+int w1_reset_select_slave(struct w1_slave *sl);
+int w1_reset_resume_command(struct w1_master *);
+void w1_next_pullup(struct w1_master *, int);
+
+static inline struct w1_slave* dev_to_w1_slave(struct device *dev)
+{
+ return container_of(dev, struct w1_slave, dev);
+}
+
+static inline struct w1_slave* kobj_to_w1_slave(struct kobject *kobj)
+{
+ return dev_to_w1_slave(container_of(kobj, struct device, kobj));
+}
+
+static inline struct w1_master* dev_to_w1_master(struct device *dev)
+{
+ return container_of(dev, struct w1_master, dev);
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* __LINUX_W1_H */
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff