Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
new file mode 100644
index 0000000..ebcd745
--- /dev/null
+++ b/include/linux/i2c.h
@@ -0,0 +1,594 @@
+/* ------------------------------------------------------------------------- */
+/* */
+/* 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 *normal_i2c_range;
+ unsigned short *probe;
+ unsigned short *probe_range;
+ unsigned short *ignore;
+ unsigned short *ignore_range;
+ 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(probe_range, \
+ "List of adapter,start-addr,end-addr triples to scan " \
+ "additionally"); \
+ I2C_CLIENT_MODULE_PARM(ignore, \
+ "List of adapter,address pairs not to scan"); \
+ I2C_CLIENT_MODULE_PARM(ignore_range, \
+ "List of adapter,start-addr,end-addr triples 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, \
+ .normal_i2c_range = normal_i2c_range, \
+ .probe = probe, \
+ .probe_range = probe_range, \
+ .ignore = ignore, \
+ .ignore_range = ignore_range, \
+ .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 */