45e9809aff7304721fddb95654901b32195c9c7avboxsync/*
45e9809aff7304721fddb95654901b32195c9c7avboxsync * Copyright (C) 1998 Itai Nahshon, Michael Schimek
45e9809aff7304721fddb95654901b32195c9c7avboxsync */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#ifndef _XF86I2C_H
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define _XF86I2C_H
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#include "regionstr.h"
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef unsigned char I2CByte;
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef unsigned short I2CSlaveAddr;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef struct _I2CBusRec *I2CBusPtr;
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef struct _I2CDevRec *I2CDevPtr;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync/* I2C masters have to register themselves */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef struct _I2CBusRec {
45e9809aff7304721fddb95654901b32195c9c7avboxsync char * BusName;
45e9809aff7304721fddb95654901b32195c9c7avboxsync int scrnIndex;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync void (*I2CUDelay) (I2CBusPtr b, int usec);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync void (*I2CPutBits)(I2CBusPtr b, int scl, int sda);
45e9809aff7304721fddb95654901b32195c9c7avboxsync void (*I2CGetBits)(I2CBusPtr b, int *scl, int *sda);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync /* Look at the generic routines to see how these functions should behave. */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync Bool (*I2CStart) (I2CBusPtr b, int timeout);
45e9809aff7304721fddb95654901b32195c9c7avboxsync Bool (*I2CAddress)(I2CDevPtr d, I2CSlaveAddr);
45e9809aff7304721fddb95654901b32195c9c7avboxsync void (*I2CStop) (I2CDevPtr d);
45e9809aff7304721fddb95654901b32195c9c7avboxsync Bool (*I2CPutByte)(I2CDevPtr d, I2CByte data);
45e9809aff7304721fddb95654901b32195c9c7avboxsync Bool (*I2CGetByte)(I2CDevPtr d, I2CByte *data, Bool);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync DevUnion DriverPrivate;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync int HoldTime; /* 1 / bus clock frequency, 5 or 2 usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync int BitTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int ByteTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int AcknTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int StartTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int RiseFallTime; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CDevPtr FirstDev;
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CBusPtr NextBus;
45e9809aff7304721fddb95654901b32195c9c7avboxsync Bool (*I2CWriteRead)(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CByte *ReadBuffer, int nRead);
45e9809aff7304721fddb95654901b32195c9c7avboxsync} I2CBusRec;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define CreateI2CBusRec xf86CreateI2CBusRec
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT I2CBusPtr xf86CreateI2CBusRec(void);
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define DestroyI2CBusRec xf86DestroyI2CBusRec
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT void xf86DestroyI2CBusRec(I2CBusPtr pI2CBus, Bool unalloc, Bool devs_too);
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define I2CBusInit xf86I2CBusInit
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CBusInit(I2CBusPtr pI2CBus);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT I2CBusPtr xf86I2CFindBus(int scrnIndex, char *name);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT int xf86I2CGetScreenBuses(int scrnIndex, I2CBusPtr **pppI2CBus);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync/* I2C slave devices */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsynctypedef struct _I2CDevRec {
45e9809aff7304721fddb95654901b32195c9c7avboxsync char * DevName;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync int BitTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int ByteTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int AcknTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int StartTimeout; /* usec */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CSlaveAddr SlaveAddr;
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CBusPtr pI2CBus;
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CDevPtr NextDev;
45e9809aff7304721fddb95654901b32195c9c7avboxsync DevUnion DriverPrivate;
45e9809aff7304721fddb95654901b32195c9c7avboxsync} I2CDevRec;
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define CreateI2CDevRec xf86CreateI2CDevRec
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT I2CDevPtr xf86CreateI2CDevRec(void);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT void xf86DestroyI2CDevRec(I2CDevPtr pI2CDev, Bool unalloc);
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define I2CDevInit xf86I2CDevInit
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CDevInit(I2CDevPtr pI2CDev);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT I2CDevPtr xf86I2CFindDev(I2CBusPtr, I2CSlaveAddr);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync/* See descriptions of these functions in xf86i2c.c */
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define I2CProbeAddress xf86I2CProbeAddress
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CProbeAddress(I2CBusPtr pI2CBus, I2CSlaveAddr);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define I2C_WriteRead xf86I2CWriteRead
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CWriteRead(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
45e9809aff7304721fddb95654901b32195c9c7avboxsync I2CByte *ReadBuffer, int nRead);
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define xf86I2CRead(d, rb, nr) xf86I2CWriteRead(d, NULL, 0, rb, nr)
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CReadStatus(I2CDevPtr d, I2CByte *pbyte);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CReadByte(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CReadBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte, int n);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CReadWord(I2CDevPtr d, I2CByte subaddr, unsigned short *pword);
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define xf86I2CWrite(d, wb, nw) xf86I2CWriteRead(d, wb, nw, NULL, 0)
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CWriteByte(I2CDevPtr d, I2CByte subaddr, I2CByte byte);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CWriteBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *WriteBuffer, int nWrite);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CWriteWord(I2CDevPtr d, I2CByte subaddr, unsigned short word);
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern _X_EXPORT Bool xf86I2CWriteVec(I2CDevPtr d, I2CByte *vec, int nValues);
45e9809aff7304721fddb95654901b32195c9c7avboxsync
45e9809aff7304721fddb95654901b32195c9c7avboxsync#endif /*_XF86I2C_H */