105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
|
/*
|
||
|
|
* Copyright (C) 1998 Itai Nahshon, Michael Schimek
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/i2c/xf86i2c.h,v 1.10 2003/07/16 01:38:47 dawes Exp $ */
|
||
|
|
#ifndef _XF86I2C_H
|
||
|
|
#define _XF86I2C_H
|
||
|
|
|
||
|
|
//#include "regionstr.h"
|
||
|
|
|
||
|
|
typedef unsigned char I2CByte;
|
||
|
|
typedef unsigned short I2CSlaveAddr;
|
||
|
|
|
||
|
|
typedef struct _I2CBusRec *I2CBusPtr;
|
||
|
|
typedef struct _I2CDevRec *I2CDevPtr;
|
||
|
|
|
||
|
|
/* I2C masters have to register themselves */
|
||
|
|
|
||
|
|
typedef union _DevUnion {
|
||
|
|
pointer ptr;
|
||
|
|
long val;
|
||
|
|
unsigned long uval;
|
||
|
|
} DevUnion;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct _I2CBusRec {
|
||
|
|
char * BusName;
|
||
|
|
int scrnIndex;
|
||
|
|
|
||
|
|
void (*I2CUDelay) (I2CBusPtr b, int usec);
|
||
|
|
|
||
|
|
void (*I2CPutBits)(I2CBusPtr b, int scl, int sda);
|
||
|
|
void (*I2CGetBits)(I2CBusPtr b, int *scl, int *sda);
|
||
|
|
|
||
|
|
/* Look at the generic routines to see how these functions should behave. */
|
||
|
|
|
||
|
|
Bool (*I2CStart) (I2CBusPtr b, int timeout);
|
||
|
|
Bool (*I2CAddress)(I2CDevPtr d, I2CSlaveAddr);
|
||
|
|
void (*I2CStop) (I2CDevPtr d);
|
||
|
|
Bool (*I2CPutByte)(I2CDevPtr d, I2CByte data);
|
||
|
|
Bool (*I2CGetByte)(I2CDevPtr d, I2CByte *data, Bool);
|
||
|
|
|
||
|
|
DevUnion DriverPrivate;
|
||
|
|
|
||
|
|
int HoldTime; /* 1 / bus clock frequency, 5 or 2 usec */
|
||
|
|
|
||
|
|
int BitTimeout; /* usec */
|
||
|
|
int ByteTimeout; /* usec */
|
||
|
|
int AcknTimeout; /* usec */
|
||
|
|
int StartTimeout; /* usec */
|
||
|
|
int RiseFallTime; /* usec */
|
||
|
|
|
||
|
|
I2CDevPtr FirstDev;
|
||
|
|
I2CBusPtr NextBus;
|
||
|
|
Bool (*I2CWriteRead)(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
|
||
|
|
I2CByte *ReadBuffer, int nRead);
|
||
|
|
} I2CBusRec;
|
||
|
|
|
||
|
|
I2CBusPtr xf86CreateI2CBusRec(void);
|
||
|
|
void xf86DestroyI2CBusRec(I2CBusPtr pI2CBus, Bool unalloc, Bool devs_too);
|
||
|
|
Bool xf86I2CBusInit(I2CBusPtr pI2CBus);
|
||
|
|
I2CBusPtr xf86I2CFindBus(RHDPtr rhdPtr, char *name);
|
||
|
|
int xf86I2CGetScreenBuses(RHDPtr rhdPtr, I2CBusPtr **pppI2CBus);
|
||
|
|
|
||
|
|
|
||
|
|
/* I2C slave devices */
|
||
|
|
|
||
|
|
typedef struct _I2CDevRec {
|
||
|
|
char * DevName;
|
||
|
|
|
||
|
|
int BitTimeout; /* usec */
|
||
|
|
int ByteTimeout; /* usec */
|
||
|
|
int AcknTimeout; /* usec */
|
||
|
|
int StartTimeout; /* usec */
|
||
|
|
|
||
|
|
I2CSlaveAddr SlaveAddr;
|
||
|
|
I2CBusPtr pI2CBus;
|
||
|
|
I2CDevPtr NextDev;
|
||
|
|
DevUnion DriverPrivate;
|
||
|
|
} I2CDevRec;
|
||
|
|
|
||
|
|
I2CDevPtr xf86CreateI2CDevRec(void);
|
||
|
|
void xf86DestroyI2CDevRec(I2CDevPtr pI2CDev, Bool unalloc);
|
||
|
|
Bool xf86I2CDevInit(I2CDevPtr pI2CDev);
|
||
|
|
I2CDevPtr xf86I2CFindDev(I2CBusPtr, I2CSlaveAddr);
|
||
|
|
|
||
|
|
/* See descriptions of these functions in xf86i2c.c */
|
||
|
|
|
||
|
|
Bool xf86I2CProbeAddress(I2CBusPtr pI2CBus, I2CSlaveAddr);
|
||
|
|
Bool xf86I2CWriteRead(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
|
||
|
|
I2CByte *ReadBuffer, int nRead);
|
||
|
|
#define xf86I2CRead(d, rb, nr) xf86I2CWriteRead(d, NULL, 0, rb, nr)
|
||
|
|
Bool xf86I2CReadStatus(I2CDevPtr d, I2CByte *pbyte);
|
||
|
|
Bool xf86I2CReadByte(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte);
|
||
|
|
Bool xf86I2CReadBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte, int n);
|
||
|
|
Bool xf86I2CReadWord(I2CDevPtr d, I2CByte subaddr, unsigned short *pword);
|
||
|
|
#define xf86I2CWrite(d, wb, nw) xf86I2CWriteRead(d, wb, nw, NULL, 0)
|
||
|
|
Bool xf86I2CWriteByte(I2CDevPtr d, I2CByte subaddr, I2CByte byte);
|
||
|
|
Bool xf86I2CWriteBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *WriteBuffer, int nWrite);
|
||
|
|
Bool xf86I2CWriteWord(I2CDevPtr d, I2CByte subaddr, unsigned short word);
|
||
|
|
Bool xf86I2CWriteVec(I2CDevPtr d, I2CByte *vec, int nValues);
|
||
|
|
|
||
|
|
#endif /*_XF86I2C_H */
|