#include <linux/module.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/init.h>
#include <asm/etraxi2c.h>
#include <arch/svinto.h>
#include <asm/io.h>
#include <asm/delay.h>
#include <arch/io_interface_mux.h>
#include "i2c.h"

Macros
#define	D(x)

#define	I2C_MAJOR 123 /* LOCAL/EXPERIMENTAL */

#define	CLOCK_LOW_TIME 8

#define	CLOCK_HIGH_TIME 8

#define	START_CONDITION_HOLD_TIME 8

#define	STOP_CONDITION_HOLD_TIME 8

#define	ENABLE_OUTPUT 0x01

#define	ENABLE_INPUT 0x00

#define	I2C_CLOCK_HIGH 1

#define	I2C_CLOCK_LOW 0

#define	I2C_DATA_HIGH 1

#define	I2C_DATA_LOW 0

#define	i2c_enable() *R_PORT_PB_I2C = (port_pb_i2c_shadow \|= IO_MASK(R_PORT_PB_I2C, i2c_en))

#define	i2c_disable() *R_PORT_PB_I2C = (port_pb_i2c_shadow &= ~IO_MASK(R_PORT_PB_I2C, i2c_en))

#define	i2c_dir_out()

#define	i2c_dir_in()

#define	i2c_clk(x)

#define	i2c_data(x)

#define	i2c_getbit() (*R_PORT_PB_READ & 0x1)

#define	i2c_delay(usecs) udelay(usecs)

Functions
void	i2c_start (void)

void	i2c_stop (void)

void	i2c_outbyte (unsigned char x)

unsigned char	i2c_inbyte (void)

int	i2c_getack (void)

void	i2c_sendack (void)

void	i2c_sendnack (void)

int	i2c_writereg (unsigned char theSlave, unsigned char theReg, unsigned char theValue)

unsigned char	i2c_readreg (unsigned char theSlave, unsigned char theReg)

int __init	i2c_init (void)

	module_init (i2c_register)

Macro Definition Documentation

#define CLOCK_HIGH_TIME 8

Definition at line 40 of file i2c.c.

#define CLOCK_LOW_TIME 8

Definition at line 39 of file i2c.c.

#define D ( x )

! ! FILE NAME : i2c.c ! ! DESCRIPTION: implements an interface for IIC/I2C, both directly from other ! kernel modules (i2c_writereg/readreg) and from userspace using ! ioctl()'s ! ! (C) Copyright 1999-2007 Axis Communications AB, LUND, SWEDEN ! !

Definition at line 34 of file i2c.c.

#define ENABLE_INPUT 0x00

Definition at line 44 of file i2c.c.

#define ENABLE_OUTPUT 0x01

Definition at line 43 of file i2c.c.

#define i2c_clk ( x )

Value:

*R_PORT_PB_I2C = (port_pb_i2c_shadow = (port_pb_i2c_shadow & \
       ~IO_MASK(R_PORT_PB_I2C, i2c_clk)) | IO_FIELD(R_PORT_PB_I2C, i2c_clk, (x))); \
       REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, 1, x);

Definition at line 99 of file i2c.c.

#define I2C_CLOCK_HIGH 1

Definition at line 45 of file i2c.c.

#define I2C_CLOCK_LOW 0

Definition at line 46 of file i2c.c.

#define i2c_data ( x )

Value:

*R_PORT_PB_I2C = (port_pb_i2c_shadow = (port_pb_i2c_shadow & \
       ~IO_MASK(R_PORT_PB_I2C, i2c_d)) | IO_FIELD(R_PORT_PB_I2C, i2c_d, (x))); \
    REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, 0, x);

Definition at line 104 of file i2c.c.

#define I2C_DATA_HIGH 1

Definition at line 47 of file i2c.c.

#define I2C_DATA_LOW 0

Definition at line 48 of file i2c.c.

#define i2c_delay ( usecs ) udelay(usecs)

Definition at line 116 of file i2c.c.

#define i2c_dir_in ( )

Value:

*R_PORT_PB_I2C = (port_pb_i2c_shadow |= IO_MASK(R_PORT_PB_I2C, i2c_oe_)); \

REG_SHADOW_SET(R_PORT_PB_DIR, port_pb_dir_shadow, 0, 0);

Definition at line 93 of file i2c.c.

#define i2c_dir_out ( )

Value:

*R_PORT_PB_I2C = (port_pb_i2c_shadow &= ~IO_MASK(R_PORT_PB_I2C, i2c_oe_)); \

REG_SHADOW_SET(R_PORT_PB_DIR, port_pb_dir_shadow, 0, 1);

Definition at line 90 of file i2c.c.

#define i2c_disable ( ) *R_PORT_PB_I2C = (port_pb_i2c_shadow &= ~IO_MASK(R_PORT_PB_I2C, i2c_en))

Definition at line 86 of file i2c.c.

#define i2c_enable ( ) *R_PORT_PB_I2C = (port_pb_i2c_shadow |= IO_MASK(R_PORT_PB_I2C, i2c_en))

Definition at line 85 of file i2c.c.

#define i2c_getbit ( ) (*R_PORT_PB_READ & 0x1)

Definition at line 111 of file i2c.c.

#define I2C_MAJOR 123 /* LOCAL/EXPERIMENTAL */

Definition at line 36 of file i2c.c.

#define START_CONDITION_HOLD_TIME 8

Definition at line 41 of file i2c.c.

#define STOP_CONDITION_HOLD_TIME 8

Definition at line 42 of file i2c.c.

Function Documentation

int i2c_getack ( void )

Definition at line 267 of file i2c.c.

unsigned char i2c_inbyte ( void )

Definition at line 210 of file i2c.c.

int __init i2c_init ( void )

Definition at line 623 of file i2c.c.

void i2c_outbyte ( unsigned char x )

Definition at line 178 of file i2c.c.

unsigned char i2c_readreg	(	unsigned char	theSlave,
		unsigned char	theReg
	)

Definition at line 487 of file i2c.c.

void i2c_sendack ( void )

Definition at line 350 of file i2c.c.

void i2c_sendnack ( void )

Definition at line 386 of file i2c.c.

void i2c_start ( void )

Definition at line 126 of file i2c.c.

void i2c_stop ( void )

Definition at line 151 of file i2c.c.

int i2c_writereg	(	unsigned char	theSlave,
		unsigned char	theReg,
		unsigned char	theValue
	)

Definition at line 417 of file i2c.c.

module_init ( i2c_register )

Macros

Functions

Macro Definition Documentation

Function Documentation