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remarkable-linux/include/linux/i2c.h
Jean Delvare b3d5496ea5 [PATCH] I2C: Kill address ranges in non-sensors i2c chip drivers 
Some months ago, you killed the address ranges mechanism from all
sensors i2c chip drivers (both the module parameters and the in-code
address lists). I think it was a very good move, as the ranges can
easily be replaced by individual addresses, and this allowed for
significant cleanups in the i2c core (let alone the impressive size
shrink for all these drivers).

Unfortunately you did not do the same for non-sensors i2c chip drivers.
These need the address ranges even less, so we could get rid of the
ranges here as well for another significant i2c core cleanup. Here comes
a patch which does just that. Since the process is exactly the same as
what you did for the other drivers set already, I did not split this one
in parts.

A documentation update is included.

The change saves 308 bytes in the i2c core, and an average 1382 bytes
for chip drivers which use I2C_CLIENT_INSMOD, 126 bytes for those which
do not.

This change is required if we want to merge the sensors and non-sensors
i2c code (and we want to do this).

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Index: gregkh-2.6/Documentation/i2c/writing-clients
===================================================================
2005-06-21 21:51:48 -07:00

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/* ------------------------------------------------------------------------- */
/* */
/* i2c.h - definitions for the i2c-bus interface */
/* */
/* ------------------------------------------------------------------------- */
/* Copyright (C) 1995-2000 Simon G. Vogl
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* ------------------------------------------------------------------------- */
/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
Frodo Looijaard <frodol@dds.nl> */
/* $Id: i2c.h,v 1.68 2003/01/21 08:08:16 kmalkki Exp $ */
#ifndef _LINUX_I2C_H
#define _LINUX_I2C_H
#include <linux/module.h>
#include <linux/types.h>
#include <linux/i2c-id.h>
#include <linux/device.h> /* for struct device */
#include <asm/semaphore.h>
/* --- General options ------------------------------------------------ */
struct i2c_msg;
struct i2c_algorithm;
struct i2c_adapter;
struct i2c_client;
struct i2c_driver;
struct i2c_client_address_data;
union i2c_smbus_data;
/*
* The master routines are the ones normally used to transmit data to devices
* on a bus (or read from them). Apart from two basic transfer functions to
* transmit one message at a time, a more complex version can be used to
* transmit an arbitrary number of messages without interruption.
*/
extern int i2c_master_send(struct i2c_client *,const char* ,int);
extern int i2c_master_recv(struct i2c_client *,char* ,int);
/* Transfer num messages.
*/
extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
/*
* Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor.
* This is not tested/implemented yet and will change in the future.
*/
extern int i2c_slave_send(struct i2c_client *,char*,int);
extern int i2c_slave_recv(struct i2c_client *,char*,int);
/* This is the very generalized SMBus access routine. You probably do not
want to use this, though; one of the functions below may be much easier,
and probably just as fast.
Note that we use i2c_adapter here, because you do not need a specific
smbus adapter to call this function. */
extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr,
unsigned short flags,
char read_write, u8 command, int size,
union i2c_smbus_data * data);
/* Now follow the 'nice' access routines. These also document the calling
conventions of smbus_access. */
extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value);
extern s32 i2c_smbus_read_byte(struct i2c_client * client);
extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value);
extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command);
extern s32 i2c_smbus_write_byte_data(struct i2c_client * client,
u8 command, u8 value);
extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command);
extern s32 i2c_smbus_write_word_data(struct i2c_client * client,
u8 command, u16 value);
/* Returns the number of bytes transferred */
extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
u8 command, u8 length,
u8 *values);
extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
u8 command, u8 *values);
/*
* A driver is capable of handling one or more physical devices present on
* I2C adapters. This information is used to inform the driver of adapter
* events.
*/
struct i2c_driver {
struct module *owner;
char name[32];
int id;
unsigned int class;
unsigned int flags; /* div., see below */
/* Notifies the driver that a new bus has appeared. This routine
* can be used by the driver to test if the bus meets its conditions
* & seek for the presence of the chip(s) it supports. If found, it
* registers the client(s) that are on the bus to the i2c admin. via
* i2c_attach_client.
*/
int (*attach_adapter)(struct i2c_adapter *);
int (*detach_adapter)(struct i2c_adapter *);
/* tells the driver that a client is about to be deleted & gives it
* the chance to remove its private data. Also, if the client struct
* has been dynamically allocated by the driver in the function above,
* it must be freed here.
*/
int (*detach_client)(struct i2c_client *);
/* a ioctl like command that can be used to perform specific functions
* with the device.
*/
int (*command)(struct i2c_client *client,unsigned int cmd, void *arg);
struct device_driver driver;
struct list_head list;
};
#define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
#define I2C_NAME_SIZE 50
/*
* i2c_client identifies a single device (i.e. chip) that is connected to an
* i2c bus. The behaviour is defined by the routines of the driver. This
* function is mainly used for lookup & other admin. functions.
*/
struct i2c_client {
unsigned int flags; /* div., see below */
unsigned int addr; /* chip address - NOTE: 7bit */
/* addresses are stored in the */
/* _LOWER_ 7 bits of this char */
/* addr: unsigned int to make lm_sensors i2c-isa adapter work
more cleanly. It does not take any more memory space, due to
alignment considerations */
struct i2c_adapter *adapter; /* the adapter we sit on */
struct i2c_driver *driver; /* and our access routines */
int usage_count; /* How many accesses currently */
/* to the client */
struct device dev; /* the device structure */
struct list_head list;
char name[I2C_NAME_SIZE];
struct completion released;
};
#define to_i2c_client(d) container_of(d, struct i2c_client, dev)
static inline void *i2c_get_clientdata (struct i2c_client *dev)
{
return dev_get_drvdata (&dev->dev);
}
static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
{
dev_set_drvdata (&dev->dev, data);
}
#define I2C_DEVNAME(str) .name = str
static inline char *i2c_clientname(struct i2c_client *c)
{
return &c->name[0];
}
/*
* The following structs are for those who like to implement new bus drivers:
* i2c_algorithm is the interface to a class of hardware solutions which can
* be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
* to name two of the most common.
*/
struct i2c_algorithm {
char name[32]; /* textual description */
unsigned int id;
/* If an adapter algorithm can't do I2C-level access, set master_xfer
to NULL. If an adapter algorithm can do SMBus access, set
smbus_xfer. If set to NULL, the SMBus protocol is simulated
using common I2C messages */
int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs,
int num);
int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
u8 command, int size, union i2c_smbus_data * data);
/* --- these optional/future use for some adapter types.*/
int (*slave_send)(struct i2c_adapter *,char*,int);
int (*slave_recv)(struct i2c_adapter *,char*,int);
/* --- ioctl like call to set div. parameters. */
int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long);
/* To determine what the adapter supports */
u32 (*functionality) (struct i2c_adapter *);
};
/*
* i2c_adapter is the structure used to identify a physical i2c bus along
* with the access algorithms necessary to access it.
*/
struct i2c_adapter {
struct module *owner;
unsigned int id;/* == is algo->id | hwdep.struct->id, */
/* for registered values see below */
unsigned int class;
struct i2c_algorithm *algo;/* the algorithm to access the bus */
void *algo_data;
/* --- administration stuff. */
int (*client_register)(struct i2c_client *);
int (*client_unregister)(struct i2c_client *);
/* data fields that are valid for all devices */
struct semaphore bus_lock;
struct semaphore clist_lock;
int timeout;
int retries;
struct device dev; /* the adapter device */
struct class_device class_dev; /* the class device */
#ifdef CONFIG_PROC_FS
/* No need to set this when you initialize the adapter */
int inode;
#endif /* def CONFIG_PROC_FS */
int nr;
struct list_head clients;
struct list_head list;
char name[I2C_NAME_SIZE];
struct completion dev_released;
struct completion class_dev_released;
};
#define dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
#define class_dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, class_dev)
static inline void *i2c_get_adapdata (struct i2c_adapter *dev)
{
return dev_get_drvdata (&dev->dev);
}
static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
{
dev_set_drvdata (&dev->dev, data);
}
/*flags for the driver struct: */
#define I2C_DF_NOTIFY 0x01 /* notify on bus (de/a)ttaches */
#if 0
/* this flag is gone -- there is a (optional) driver->detach_adapter
* callback now which can be used instead */
# define I2C_DF_DUMMY 0x02
#endif
/*flags for the client struct: */
#define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */
#define I2C_CLIENT_ALLOW_MULTIPLE_USE 0x02 /* Allow multiple access-locks */
/* on an i2c_client */
#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
/* Must equal I2C_M_TEN below */
/* i2c adapter classes (bitmask) */
#define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */
#define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */
#define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */
#define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */
#define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */
#define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */
#define I2C_CLASS_SOUND (1<<6) /* sound devices */
#define I2C_CLASS_ALL (UINT_MAX) /* all of the above */
/* i2c_client_address_data is the struct for holding default client
* addresses for a driver and for the parameters supplied on the
* command line
*/
struct i2c_client_address_data {
unsigned short *normal_i2c;
unsigned short *probe;
unsigned short *ignore;
unsigned short *force;
};
/* Internal numbers to terminate lists */
#define I2C_CLIENT_END 0xfffeU
#define I2C_CLIENT_ISA_END 0xfffefffeU
/* The numbers to use to set I2C bus address */
#define ANY_I2C_BUS 0xffff
#define ANY_I2C_ISA_BUS 9191
/* ----- functions exported by i2c.o */
/* administration...
*/
extern int i2c_add_adapter(struct i2c_adapter *);
extern int i2c_del_adapter(struct i2c_adapter *);
extern int i2c_add_driver(struct i2c_driver *);
extern int i2c_del_driver(struct i2c_driver *);
extern int i2c_attach_client(struct i2c_client *);
extern int i2c_detach_client(struct i2c_client *);
/* New function: This is to get an i2c_client-struct for controlling the
client either by using i2c_control-function or having the
client-module export functions that can be used with the i2c_client
-struct. */
extern struct i2c_client *i2c_get_client(int driver_id, int adapter_id,
struct i2c_client *prev);
/* Should be used with new function
extern struct i2c_client *i2c_get_client(int,int,struct i2c_client *);
to make sure that client-struct is valid and that it is okay to access
the i2c-client.
returns -EACCES if client doesn't allow use (default)
returns -EBUSY if client doesn't allow multiple use (default) and
usage_count >0 */
extern int i2c_use_client(struct i2c_client *);
extern int i2c_release_client(struct i2c_client *);
/* call the i2c_client->command() of all attached clients with
* the given arguments */
extern void i2c_clients_command(struct i2c_adapter *adap,
unsigned int cmd, void *arg);
/* returns -EBUSY if address has been taken, 0 if not. Note that the only
other place at which this is called is within i2c_attach_client; so
you can cheat by simply not registering. Not recommended, of course! */
extern int i2c_check_addr (struct i2c_adapter *adapter, int addr);
/* Detect function. It iterates over all possible addresses itself.
* It will only call found_proc if some client is connected at the
* specific address (unless a 'force' matched);
*/
extern int i2c_probe(struct i2c_adapter *adapter,
struct i2c_client_address_data *address_data,
int (*found_proc) (struct i2c_adapter *, int, int));
/* An ioctl like call to set div. parameters of the adapter.
*/
extern int i2c_control(struct i2c_client *,unsigned int, unsigned long);
/* This call returns a unique low identifier for each registered adapter,
* or -1 if the adapter was not registered.
*/
extern int i2c_adapter_id(struct i2c_adapter *adap);
extern struct i2c_adapter* i2c_get_adapter(int id);
extern void i2c_put_adapter(struct i2c_adapter *adap);
/* Return the functionality mask */
static inline u32 i2c_get_functionality(struct i2c_adapter *adap)
{
return adap->algo->functionality(adap);
}
/* Return 1 if adapter supports everything we need, 0 if not. */
static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
{
return (func & i2c_get_functionality(adap)) == func;
}
/*
* I2C Message - used for pure i2c transaction, also from /dev interface
*/
struct i2c_msg {
__u16 addr; /* slave address */
__u16 flags;
#define I2C_M_TEN 0x10 /* we have a ten bit chip address */
#define I2C_M_RD 0x01
#define I2C_M_NOSTART 0x4000
#define I2C_M_REV_DIR_ADDR 0x2000
#define I2C_M_IGNORE_NAK 0x1000
#define I2C_M_NO_RD_ACK 0x0800
__u16 len; /* msg length */
__u8 *buf; /* pointer to msg data */
};
/* To determine what functionality is present */
#define I2C_FUNC_I2C 0x00000001
#define I2C_FUNC_10BIT_ADDR 0x00000002
#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC 0x00000800 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_PROC_CALL_PEC 0x00002000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_QUICK 0x00010000
#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
#define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000
#define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000
#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000
#define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000
#define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000
#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */
#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC 0x40000000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
I2C_FUNC_SMBUS_WRITE_BYTE)
#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
I2C_FUNC_SMBUS_WRITE_WORD_DATA)
#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC (I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC)
#define I2C_FUNC_SMBUS_WORD_DATA_PEC (I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC)
#define I2C_FUNC_SMBUS_READ_BYTE_PEC I2C_FUNC_SMBUS_READ_BYTE_DATA
#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC I2C_FUNC_SMBUS_WRITE_BYTE_DATA
#define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA
#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC I2C_FUNC_SMBUS_WRITE_WORD_DATA
#define I2C_FUNC_SMBUS_BYTE_PEC I2C_FUNC_SMBUS_BYTE_DATA
#define I2C_FUNC_SMBUS_BYTE_DATA_PEC I2C_FUNC_SMBUS_WORD_DATA
#define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
I2C_FUNC_SMBUS_BYTE | \
I2C_FUNC_SMBUS_BYTE_DATA | \
I2C_FUNC_SMBUS_WORD_DATA | \
I2C_FUNC_SMBUS_PROC_CALL | \
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
I2C_FUNC_SMBUS_I2C_BLOCK)
/*
* Data for SMBus Messages
*/
#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */
#define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */
union i2c_smbus_data {
__u8 byte;
__u16 word;
__u8 block[I2C_SMBUS_BLOCK_MAX + 3]; /* block[0] is used for length */
/* one more for read length in block process call */
/* and one more for PEC */
};
/* smbus_access read or write markers */
#define I2C_SMBUS_READ 1
#define I2C_SMBUS_WRITE 0
/* SMBus transaction types (size parameter in the above functions)
Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */
#define I2C_SMBUS_QUICK 0
#define I2C_SMBUS_BYTE 1
#define I2C_SMBUS_BYTE_DATA 2
#define I2C_SMBUS_WORD_DATA 3
#define I2C_SMBUS_PROC_CALL 4
#define I2C_SMBUS_BLOCK_DATA 5
#define I2C_SMBUS_I2C_BLOCK_DATA 6
#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */
#define I2C_SMBUS_BLOCK_DATA_PEC 8 /* SMBus 2.0 */
#define I2C_SMBUS_PROC_CALL_PEC 9 /* SMBus 2.0 */
#define I2C_SMBUS_BLOCK_PROC_CALL_PEC 10 /* SMBus 2.0 */
#define I2C_SMBUS_WORD_DATA_PEC 11 /* SMBus 2.0 */
/* ----- commands for the ioctl like i2c_command call:
* note that additional calls are defined in the algorithm and hw
* dependent layers - these can be listed here, or see the
* corresponding header files.
*/
/* -> bit-adapter specific ioctls */
#define I2C_RETRIES 0x0701 /* number of times a device address */
/* should be polled when not */
/* acknowledging */
#define I2C_TIMEOUT 0x0702 /* set timeout - call with int */
/* this is for i2c-dev.c */
#define I2C_SLAVE 0x0703 /* Change slave address */
/* Attn.: Slave address is 7 or 10 bits */
#define I2C_SLAVE_FORCE 0x0706 /* Change slave address */
/* Attn.: Slave address is 7 or 10 bits */
/* This changes the address, even if it */
/* is already taken! */
#define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
#define I2C_FUNCS 0x0705 /* Get the adapter functionality */
#define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/
#define I2C_PEC 0x0708 /* != 0 for SMBus PEC */
#if 0
#define I2C_ACK_TEST 0x0710 /* See if a slave is at a specific address */
#endif
#define I2C_SMBUS 0x0720 /* SMBus-level access */
/* ... algo-bit.c recognizes */
#define I2C_UDELAY 0x0705 /* set delay in microsecs between each */
/* written byte (except address) */
#define I2C_MDELAY 0x0706 /* millisec delay between written bytes */
/* ----- I2C-DEV: char device interface stuff ------------------------- */
#define I2C_MAJOR 89 /* Device major number */
/* These defines are used for probing i2c client addresses */
/* The length of the option lists */
#define I2C_CLIENT_MAX_OPTS 48
/* Default fill of many variables */
#define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END}
/* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the
module header */
#define I2C_CLIENT_MODULE_PARM(var,desc) \
static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \
static unsigned int var##_num; \
module_param_array(var, short, &var##_num, 0); \
MODULE_PARM_DESC(var,desc)
/* This is the one you want to use in your own modules */
#define I2C_CLIENT_INSMOD \
I2C_CLIENT_MODULE_PARM(probe, \
"List of adapter,address pairs to scan additionally"); \
I2C_CLIENT_MODULE_PARM(ignore, \
"List of adapter,address pairs not to scan"); \
I2C_CLIENT_MODULE_PARM(force, \
"List of adapter,address pairs to boldly assume " \
"to be present"); \
static struct i2c_client_address_data addr_data = { \
.normal_i2c = normal_i2c, \
.probe = probe, \
.ignore = ignore, \
.force = force, \
}
/* Detect whether we are on the isa bus. If this returns true, all i2c
access will fail! */
#define i2c_is_isa_client(clientptr) \
((clientptr)->adapter->algo->id == I2C_ALGO_ISA)
#define i2c_is_isa_adapter(adapptr) \
((adapptr)->algo->id == I2C_ALGO_ISA)
#endif /* _LINUX_I2C_H */
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