cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync/*
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync * Copyright (C) 1998 Itai Nahshon, Michael Schimek
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#ifndef _XF86I2C_H
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define _XF86I2C_H
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#include "regionstr.h"
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef unsigned char I2CByte;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef unsigned short I2CSlaveAddr;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef struct _I2CBusRec *I2CBusPtr;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef struct _I2CDevRec *I2CDevPtr;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync/* I2C masters have to register themselves */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef struct _I2CBusRec {
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync char * BusName;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int scrnIndex;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync void (*I2CUDelay) (I2CBusPtr b, int usec);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync void (*I2CPutBits)(I2CBusPtr b, int scl, int sda);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync void (*I2CGetBits)(I2CBusPtr b, int *scl, int *sda);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync /* Look at the generic routines to see how these functions should behave. */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync Bool (*I2CStart) (I2CBusPtr b, int timeout);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync Bool (*I2CAddress)(I2CDevPtr d, I2CSlaveAddr);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync void (*I2CStop) (I2CDevPtr d);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync Bool (*I2CPutByte)(I2CDevPtr d, I2CByte data);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync Bool (*I2CGetByte)(I2CDevPtr d, I2CByte *data, Bool);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync DevUnion DriverPrivate;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int HoldTime; /* 1 / bus clock frequency, 5 or 2 usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int BitTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int ByteTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int AcknTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int StartTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int RiseFallTime; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CDevPtr FirstDev;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CBusPtr NextBus;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync Bool (*I2CWriteRead)(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CByte *ReadBuffer, int nRead);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync} I2CBusRec;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define CreateI2CBusRec xf86CreateI2CBusRec
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT I2CBusPtr xf86CreateI2CBusRec(void);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define DestroyI2CBusRec xf86DestroyI2CBusRec
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT void xf86DestroyI2CBusRec(I2CBusPtr pI2CBus, Bool unalloc, Bool devs_too);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define I2CBusInit xf86I2CBusInit
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CBusInit(I2CBusPtr pI2CBus);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT I2CBusPtr xf86I2CFindBus(int scrnIndex, char *name);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT int xf86I2CGetScreenBuses(int scrnIndex, I2CBusPtr **pppI2CBus);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync/* I2C slave devices */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsynctypedef struct _I2CDevRec {
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync char * DevName;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int BitTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int ByteTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int AcknTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync int StartTimeout; /* usec */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CSlaveAddr SlaveAddr;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CBusPtr pI2CBus;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CDevPtr NextDev;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync DevUnion DriverPrivate;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync} I2CDevRec;
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define CreateI2CDevRec xf86CreateI2CDevRec
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT I2CDevPtr xf86CreateI2CDevRec(void);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT void xf86DestroyI2CDevRec(I2CDevPtr pI2CDev, Bool unalloc);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define I2CDevInit xf86I2CDevInit
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CDevInit(I2CDevPtr pI2CDev);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT I2CDevPtr xf86I2CFindDev(I2CBusPtr, I2CSlaveAddr);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync/* See descriptions of these functions in xf86i2c.c */
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define I2CProbeAddress xf86I2CProbeAddress
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CProbeAddress(I2CBusPtr pI2CBus, I2CSlaveAddr);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define I2C_WriteRead xf86I2CWriteRead
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CWriteRead(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync I2CByte *ReadBuffer, int nRead);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define xf86I2CRead(d, rb, nr) xf86I2CWriteRead(d, NULL, 0, rb, nr)
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CReadStatus(I2CDevPtr d, I2CByte *pbyte);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CReadByte(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CReadBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte, int n);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CReadWord(I2CDevPtr d, I2CByte subaddr, unsigned short *pword);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#define xf86I2CWrite(d, wb, nw) xf86I2CWriteRead(d, wb, nw, NULL, 0)
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CWriteByte(I2CDevPtr d, I2CByte subaddr, I2CByte byte);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CWriteBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *WriteBuffer, int nWrite);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CWriteWord(I2CDevPtr d, I2CByte subaddr, unsigned short word);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsyncextern _X_EXPORT Bool xf86I2CWriteVec(I2CDevPtr d, I2CByte *vec, int nValues);
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync
cabde247f900dcf6e58d009bbdd15099c028c6fcvboxsync#endif /*_XF86I2C_H */