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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-03 20:55:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-03 20:55:59 -0700
commitf4dd029ee0b92b77769a1ac6dce03e829e74763e (patch)
treef918cc855a8171d68746ab61a32b9e61b024845b /include/linux
parent974668417b74ec5f68df2411f53b3d3812565059 (diff)
parentcbbdc6082917a92da0fc07cee255111de16ed64a (diff)
Merge tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH: "Here is the "big" char/misc driver patchset for 4.13-rc1. Lots of stuff in here, a large thunderbolt update, w1 driver header reorg, the new mux driver subsystem, google firmware driver updates, and a raft of other smaller things. Full details in the shortlog. All of these have been in linux-next for a while with the only reported issue being a merge problem with this tree and the jc-docs tree in the w1 documentation area" * tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (147 commits) misc: apds990x: Use sysfs_match_string() helper mei: drop unreachable code in mei_start mei: validate the message header only in first fragment. DocBook: w1: Update W1 file locations and names in DocBook mux: adg792a: always require I2C support nvmem: rockchip-efuse: add support for rk322x-efuse nvmem: core: add locking to nvmem_find_cell nvmem: core: Call put_device() in nvmem_unregister() nvmem: core: fix leaks on registration errors nvmem: correct Broadcom OTP controller driver writes w1: Add subsystem kernel public interface drivers/fsi: Add module license to core driver drivers/fsi: Use asynchronous slave mode drivers/fsi: Add hub master support drivers/fsi: Add SCOM FSI client device driver drivers/fsi/gpio: Add tracepoints for GPIO master drivers/fsi: Add GPIO based FSI master drivers/fsi: Document FSI master sysfs files in ABI drivers/fsi: Add error handling for slave drivers/fsi: Add tracepoints for low-level operations ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/coresight.h10
-rw-r--r--include/linux/crc4.h8
-rw-r--r--include/linux/fsi.h35
-rw-r--r--include/linux/iio/consumer.h37
-rw-r--r--include/linux/miscdevice.h1
-rw-r--r--include/linux/mux/consumer.h32
-rw-r--r--include/linux/mux/driver.h108
-rw-r--r--include/linux/platform_data/apds990x.h (renamed from include/linux/i2c/apds990x.h)0
-rw-r--r--include/linux/platform_data/bh1770glc.h (renamed from include/linux/i2c/bh1770glc.h)0
-rw-r--r--include/linux/sram.h8
-rw-r--r--include/linux/w1.h320
11 files changed, 551 insertions, 8 deletions
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 035c16c9a505..d950dad5056a 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -263,11 +263,15 @@ static inline int coresight_timeout(void __iomem *addr, u32 offset,
#endif
#ifdef CONFIG_OF
-extern struct coresight_platform_data *of_get_coresight_platform_data(
- struct device *dev, struct device_node *node);
+extern int of_coresight_get_cpu(const struct device_node *node);
+extern struct coresight_platform_data *
+of_get_coresight_platform_data(struct device *dev,
+ const struct device_node *node);
#else
+static inline int of_coresight_get_cpu(const struct device_node *node)
+{ return 0; }
static inline struct coresight_platform_data *of_get_coresight_platform_data(
- struct device *dev, struct device_node *node) { return NULL; }
+ struct device *dev, const struct device_node *node) { return NULL; }
#endif
#ifdef CONFIG_PID_NS
diff --git a/include/linux/crc4.h b/include/linux/crc4.h
new file mode 100644
index 000000000000..8f739f1d794f
--- /dev/null
+++ b/include/linux/crc4.h
@@ -0,0 +1,8 @@
+#ifndef _LINUX_CRC4_H
+#define _LINUX_CRC4_H
+
+#include <linux/types.h>
+
+extern uint8_t crc4(uint8_t c, uint64_t x, int bits);
+
+#endif /* _LINUX_CRC4_H */
diff --git a/include/linux/fsi.h b/include/linux/fsi.h
index 273cbf6400ea..141fd38d061f 100644
--- a/include/linux/fsi.h
+++ b/include/linux/fsi.h
@@ -21,8 +21,18 @@ struct fsi_device {
struct device dev;
u8 engine_type;
u8 version;
+ u8 unit;
+ struct fsi_slave *slave;
+ uint32_t addr;
+ uint32_t size;
};
+extern int fsi_device_read(struct fsi_device *dev, uint32_t addr,
+ void *val, size_t size);
+extern int fsi_device_write(struct fsi_device *dev, uint32_t addr,
+ const void *val, size_t size);
+extern int fsi_device_peek(struct fsi_device *dev, void *val);
+
struct fsi_device_id {
u8 engine_type;
u8 version;
@@ -36,7 +46,6 @@ struct fsi_device_id {
#define FSI_DEVICE_VERSIONED(t, v) \
.engine_type = (t), .version = (v),
-
struct fsi_driver {
struct device_driver drv;
const struct fsi_device_id *id_table;
@@ -45,6 +54,30 @@ struct fsi_driver {
#define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev)
#define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv)
+extern int fsi_driver_register(struct fsi_driver *fsi_drv);
+extern void fsi_driver_unregister(struct fsi_driver *fsi_drv);
+
+/* module_fsi_driver() - Helper macro for drivers that don't 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_fsi_driver(__fsi_driver) \
+ module_driver(__fsi_driver, fsi_driver_register, \
+ fsi_driver_unregister)
+
+/* direct slave API */
+extern int fsi_slave_claim_range(struct fsi_slave *slave,
+ uint32_t addr, uint32_t size);
+extern void fsi_slave_release_range(struct fsi_slave *slave,
+ uint32_t addr, uint32_t size);
+extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr,
+ void *val, size_t size);
+extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr,
+ const void *val, size_t size);
+
+
+
extern struct bus_type fsi_bus_type;
#endif /* LINUX_FSI_H */
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
index 47eeec3218b5..5e347a9805fd 100644
--- a/include/linux/iio/consumer.h
+++ b/include/linux/iio/consumer.h
@@ -312,4 +312,41 @@ int iio_read_channel_scale(struct iio_channel *chan, int *val,
int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
int *processed, unsigned int scale);
+/**
+ * iio_get_channel_ext_info_count() - get number of ext_info attributes
+ * connected to the channel.
+ * @chan: The channel being queried
+ *
+ * Returns the number of ext_info attributes
+ */
+unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan);
+
+/**
+ * iio_read_channel_ext_info() - read ext_info attribute from a given channel
+ * @chan: The channel being queried.
+ * @attr: The ext_info attribute to read.
+ * @buf: Where to store the attribute value. Assumed to hold
+ * at least PAGE_SIZE bytes.
+ *
+ * Returns the number of bytes written to buf (perhaps w/o zero termination;
+ * it need not even be a string), or an error code.
+ */
+ssize_t iio_read_channel_ext_info(struct iio_channel *chan,
+ const char *attr, char *buf);
+
+/**
+ * iio_write_channel_ext_info() - write ext_info attribute from a given channel
+ * @chan: The channel being queried.
+ * @attr: The ext_info attribute to read.
+ * @buf: The new attribute value. Strings needs to be zero-
+ * terminated, but the terminator should not be included
+ * in the below len.
+ * @len: The size of the new attribute value.
+ *
+ * Returns the number of accepted bytes, which should be the same as len.
+ * An error code can also be returned.
+ */
+ssize_t iio_write_channel_ext_info(struct iio_channel *chan, const char *attr,
+ const char *buf, size_t len);
+
#endif
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 762b5fec3383..58751eae5f77 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -54,6 +54,7 @@
#define VHOST_NET_MINOR 238
#define UHID_MINOR 239
#define USERIO_MINOR 240
+#define VHOST_VSOCK_MINOR 241
#define MISC_DYNAMIC_MINOR 255
struct device;
diff --git a/include/linux/mux/consumer.h b/include/linux/mux/consumer.h
new file mode 100644
index 000000000000..5577e1b773c4
--- /dev/null
+++ b/include/linux/mux/consumer.h
@@ -0,0 +1,32 @@
+/*
+ * mux/consumer.h - definitions for the multiplexer consumer interface
+ *
+ * Copyright (C) 2017 Axentia Technologies AB
+ *
+ * Author: Peter Rosin <peda@axentia.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_MUX_CONSUMER_H
+#define _LINUX_MUX_CONSUMER_H
+
+struct device;
+struct mux_control;
+
+unsigned int mux_control_states(struct mux_control *mux);
+int __must_check mux_control_select(struct mux_control *mux,
+ unsigned int state);
+int __must_check mux_control_try_select(struct mux_control *mux,
+ unsigned int state);
+int mux_control_deselect(struct mux_control *mux);
+
+struct mux_control *mux_control_get(struct device *dev, const char *mux_name);
+void mux_control_put(struct mux_control *mux);
+
+struct mux_control *devm_mux_control_get(struct device *dev,
+ const char *mux_name);
+
+#endif /* _LINUX_MUX_CONSUMER_H */
diff --git a/include/linux/mux/driver.h b/include/linux/mux/driver.h
new file mode 100644
index 000000000000..35c3579c3304
--- /dev/null
+++ b/include/linux/mux/driver.h
@@ -0,0 +1,108 @@
+/*
+ * mux/driver.h - definitions for the multiplexer driver interface
+ *
+ * Copyright (C) 2017 Axentia Technologies AB
+ *
+ * Author: Peter Rosin <peda@axentia.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_MUX_DRIVER_H
+#define _LINUX_MUX_DRIVER_H
+
+#include <dt-bindings/mux/mux.h>
+#include <linux/device.h>
+#include <linux/semaphore.h>
+
+struct mux_chip;
+struct mux_control;
+
+/**
+ * struct mux_control_ops - Mux controller operations for a mux chip.
+ * @set: Set the state of the given mux controller.
+ */
+struct mux_control_ops {
+ int (*set)(struct mux_control *mux, int state);
+};
+
+/**
+ * struct mux_control - Represents a mux controller.
+ * @lock: Protects the mux controller state.
+ * @chip: The mux chip that is handling this mux controller.
+ * @cached_state: The current mux controller state, or -1 if none.
+ * @states: The number of mux controller states.
+ * @idle_state: The mux controller state to use when inactive, or one
+ * of MUX_IDLE_AS_IS and MUX_IDLE_DISCONNECT.
+ *
+ * Mux drivers may only change @states and @idle_state, and may only do so
+ * between allocation and registration of the mux controller. Specifically,
+ * @cached_state is internal to the mux core and should never be written by
+ * mux drivers.
+ */
+struct mux_control {
+ struct semaphore lock; /* protects the state of the mux */
+
+ struct mux_chip *chip;
+ int cached_state;
+
+ unsigned int states;
+ int idle_state;
+};
+
+/**
+ * struct mux_chip - Represents a chip holding mux controllers.
+ * @controllers: Number of mux controllers handled by the chip.
+ * @mux: Array of mux controllers that are handled.
+ * @dev: Device structure.
+ * @id: Used to identify the device internally.
+ * @ops: Mux controller operations.
+ */
+struct mux_chip {
+ unsigned int controllers;
+ struct mux_control *mux;
+ struct device dev;
+ int id;
+
+ const struct mux_control_ops *ops;
+};
+
+#define to_mux_chip(x) container_of((x), struct mux_chip, dev)
+
+/**
+ * mux_chip_priv() - Get the extra memory reserved by mux_chip_alloc().
+ * @mux_chip: The mux-chip to get the private memory from.
+ *
+ * Return: Pointer to the private memory reserved by the allocator.
+ */
+static inline void *mux_chip_priv(struct mux_chip *mux_chip)
+{
+ return &mux_chip->mux[mux_chip->controllers];
+}
+
+struct mux_chip *mux_chip_alloc(struct device *dev,
+ unsigned int controllers, size_t sizeof_priv);
+int mux_chip_register(struct mux_chip *mux_chip);
+void mux_chip_unregister(struct mux_chip *mux_chip);
+void mux_chip_free(struct mux_chip *mux_chip);
+
+struct mux_chip *devm_mux_chip_alloc(struct device *dev,
+ unsigned int controllers,
+ size_t sizeof_priv);
+int devm_mux_chip_register(struct device *dev, struct mux_chip *mux_chip);
+
+/**
+ * mux_control_get_index() - Get the index of the given mux controller
+ * @mux: The mux-control to get the index for.
+ *
+ * Return: The index of the mux controller within the mux chip the mux
+ * controller is a part of.
+ */
+static inline unsigned int mux_control_get_index(struct mux_control *mux)
+{
+ return mux - mux->chip->mux;
+}
+
+#endif /* _LINUX_MUX_DRIVER_H */
diff --git a/include/linux/i2c/apds990x.h b/include/linux/platform_data/apds990x.h
index d186fcc5d257..d186fcc5d257 100644
--- a/include/linux/i2c/apds990x.h
+++ b/include/linux/platform_data/apds990x.h
diff --git a/include/linux/i2c/bh1770glc.h b/include/linux/platform_data/bh1770glc.h
index 8b5e2df36c72..8b5e2df36c72 100644
--- a/include/linux/i2c/bh1770glc.h
+++ b/include/linux/platform_data/bh1770glc.h
diff --git a/include/linux/sram.h b/include/linux/sram.h
index c97dcbe8ce25..4fb405fb0480 100644
--- a/include/linux/sram.h
+++ b/include/linux/sram.h
@@ -16,12 +16,12 @@
struct gen_pool;
#ifdef CONFIG_SRAM_EXEC
-int sram_exec_copy(struct gen_pool *pool, void *dst, void *src, size_t size);
+void *sram_exec_copy(struct gen_pool *pool, void *dst, void *src, size_t size);
#else
-static inline int sram_exec_copy(struct gen_pool *pool, void *dst, void *src,
- size_t size)
+static inline void *sram_exec_copy(struct gen_pool *pool, void *dst, void *src,
+ size_t size)
{
- return -ENODEV;
+ return NULL;
}
#endif /* CONFIG_SRAM_EXEC */
#endif /* __LINUX_SRAM_H__ */
diff --git a/include/linux/w1.h b/include/linux/w1.h
new file mode 100644
index 000000000000..90cbe7e65059
--- /dev/null
+++ b/include/linux/w1.h
@@ -0,0 +1,320 @@
+/*
+ * 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 */