os/linux-2.6-tag--devboard-R2_10-4/arch/cris/arch-v32/drivers/elphel/fpgaconfi2c.c File Reference

#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/autoconf.h>
#include <asm/system.h>
#include <asm/svinto.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/delay.h>
#include <asm/uaccess.h>
#include <asm/fpgaconfa.h>
#include "fpgaconf.h"
#include "fpgaconfi2c.h"

Include dependency graph for fpgaconfi2c.c:

Go to the source code of this file.

Defines
#define	D(x)
#define	XCLOCK_LOW_TIME   8
#define	XCLOCK_HIGH_TIME   8
#define	XSTART_CONDITION_HOLD_TIME   8
#define	XSTOP_CONDITION_HOLD_TIME   8
#define	XENABLE_OUTPUT   0x01
#define	XENABLE_INPUT   0x00
#define	XI2C_CLOCK_HIGH   1
#define	XI2C_CLOCK_LOW   0
#define	XI2C_DATA_HIGH   1
#define	XI2C_DATA_LOW   0
#define	xi2c_delay(usecs)   udelay(usecs)
#define	xi2c_disable   *R_PORT_PB_SET=(portb_shadow = 0x0203)
#define	xi2c_dir_out   *R_PORT_PB_SET=(portb_shadow = 0x0303)
#define	xi2c_dir_in   *R_PORT_PB_SET=(portb_shadow = 0x0203)
#define	xi2c_scl_0   *R_PORT_PB_SET=(portb_shadow &= 0x0301)
#define	xi2c_scl_1   *R_PORT_PB_SET=(portb_shadow |= 0x0002)
#define	xi2c_sda(x)   *R_PORT_PB_SET=(portb_shadow = (portb_shadow & 0x0002) | 0x0300 | ((x)? 1:0));
#define	xi2c_getbit   (*R_PORT_PB_READ & 1)
#define	xi2c_getscl   ((*R_PORT_PB_READ >>1) & 1)
#define	CY223933_SA   0xd2
Functions
int	xi2c_diagnose (void)
int	xi2c_start (void)
void	xi2c_stop (void)
int	xi2c_outbyte (unsigned char d)
unsigned char	xi2c_inbyte (void)
void	xi2c_sendack (void)
int	setCYField (int addr, int mask, int value)
void	initPortB (void)
int	fi2c_writeData (unsigned char theSlave, unsigned char *theData, int size)
int	fi2c_readData (unsigned char theSlave, unsigned char *theData, int size)
int	fi2c_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
int	setClockFreq (int nclock, int freq)
Variables
static unsigned long	portb_shadow = 0x0000fe03

---

Define Documentation

#define CY223933_SA   0xd2

Definition at line 384 of file fpgaconfi2c.c.

#define D

(

x

)

*************************************************************************** fpgaconfi2c.c

Definition at line 32 of file fpgaconfi2c.c.

#define XCLOCK_HIGH_TIME   8

Definition at line 36 of file fpgaconfi2c.c.

#define XCLOCK_LOW_TIME   8

Definition at line 35 of file fpgaconfi2c.c.

#define XENABLE_INPUT   0x00

Definition at line 40 of file fpgaconfi2c.c.

#define XENABLE_OUTPUT   0x01

Definition at line 39 of file fpgaconfi2c.c.

#define XI2C_CLOCK_HIGH   1

Definition at line 41 of file fpgaconfi2c.c.

#define XI2C_CLOCK_LOW   0

Definition at line 42 of file fpgaconfi2c.c.

#define XI2C_DATA_HIGH   1

Definition at line 43 of file fpgaconfi2c.c.

#define XI2C_DATA_LOW   0

Definition at line 44 of file fpgaconfi2c.c.

#define xi2c_delay

(

usecs

)

udelay(usecs)

Definition at line 63 of file fpgaconfi2c.c.

#define xi2c_dir_in   *R_PORT_PB_SET=(portb_shadow = 0x0203)

Definition at line 84 of file fpgaconfi2c.c.

#define xi2c_dir_out   *R_PORT_PB_SET=(portb_shadow = 0x0303)

Definition at line 83 of file fpgaconfi2c.c.

#define xi2c_disable   *R_PORT_PB_SET=(portb_shadow = 0x0203)

Definition at line 82 of file fpgaconfi2c.c.

Referenced by initPortB(), xi2c_diagnose(), xi2c_nostop(), and xi2c_start().

#define xi2c_getbit   (*R_PORT_PB_READ & 1)

Definition at line 88 of file fpgaconfi2c.c.

Referenced by xi2c_diagnose(), xi2c_inbyte(), xi2c_outbyte(), and xi2c_start().

#define xi2c_getscl   ((*R_PORT_PB_READ >>1) & 1)

Definition at line 89 of file fpgaconfi2c.c.

Referenced by xi2c_diagnose(), and xi2c_start().

#define xi2c_scl_0   *R_PORT_PB_SET=(portb_shadow &= 0x0301)

Definition at line 85 of file fpgaconfi2c.c.

#define xi2c_scl_1   *R_PORT_PB_SET=(portb_shadow |= 0x0002)

Definition at line 86 of file fpgaconfi2c.c.

#define xi2c_sda

(

x

)

*R_PORT_PB_SET=(portb_shadow = (portb_shadow & 0x0002) | 0x0300 | ((x)? 1:0));

Definition at line 87 of file fpgaconfi2c.c.

Referenced by xi2c_diagnose(), xi2c_inbyte(), xi2c_nostop(), xi2c_outbyte(), xi2c_sendack(), xi2c_start(), and xi2c_stop().

#define XSTART_CONDITION_HOLD_TIME   8

Definition at line 37 of file fpgaconfi2c.c.

#define XSTOP_CONDITION_HOLD_TIME   8

Definition at line 38 of file fpgaconfi2c.c.

---

Function Documentation

int fi2c_ioctl	(	struct inode *	inode,
		struct file *	file,
		unsigned int	cmd,
		unsigned long	arg
	)

Definition at line 334 of file fpgaconfi2c.c.

References D, data, error(), fi2c_readData(), fi2c_writeData(), FPGACONF_IOCTYPE, I2C_ARGREG, I2C_ARGSLAVE, I2C_ARGVALUE, I2C_READREG, I2C_WRITEREG, and printk.

int fi2c_readData	(	unsigned char	theSlave,
		unsigned char *	theData,
		int	size
	)

Definition at line 312 of file fpgaconfi2c.c.

References D, ERR_I2C_BSY, error(), printk, xi2c_inbyte(), xi2c_outbyte(), xi2c_sendack(), xi2c_start(), and xi2c_stop().

int fi2c_writeData	(	unsigned char	theSlave,
		unsigned char *	theData,
		int	size
	)

Definition at line 281 of file fpgaconfi2c.c.

References D, ERR_I2C_BSY, ERR_I2C_NACK, error(), printk, xi2c_outbyte(), xi2c_start(), and xi2c_stop().

void initPortB

(

void

)

Definition at line 76 of file fpgaconfi2c.c.

References portb_shadow, and xi2c_disable.

int setClockFreq	(	int	nclock,
		int	freq
	)

Definition at line 400 of file fpgaconfi2c.c.

References printk, and setCYField().

int setCYField	(	int	addr,
		int	mask,
		int	value
	)

int xi2c_diagnose

(

void

)

unsigned char xi2c_inbyte

(

void

)

int xi2c_outbyte

(

unsigned char

d

)

void xi2c_sendack

(

void

)

int xi2c_start

(

void

)

void xi2c_stop

(

void

)

---

Variable Documentation

unsigned long portb_shadow = 0x0000fe03 [static]

Definition at line 75 of file fpgaconfi2c.c.

Referenced by initPortB().

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