b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/*
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Copyright (C) 1998 Itai Nahshon, Michael Schimek
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#ifndef _XF86I2C_H
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define _XF86I2C_H
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#include "regionstr.h"
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef unsigned char I2CByte;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef unsigned short I2CSlaveAddr;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef struct _I2CBusRec *I2CBusPtr;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef struct _I2CDevRec *I2CDevPtr;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* I2C masters have to register themselves */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef struct _I2CBusRec {
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync char * BusName;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int scrnIndex;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync void (*I2CUDelay) (I2CBusPtr b, int usec);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync void (*I2CPutBits)(I2CBusPtr b, int scl, int sda);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync void (*I2CGetBits)(I2CBusPtr b, int *scl, int *sda);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync /* Look at the generic routines to see how these functions should behave. */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync Bool (*I2CStart) (I2CBusPtr b, int timeout);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync Bool (*I2CAddress)(I2CDevPtr d, I2CSlaveAddr);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync void (*I2CStop) (I2CDevPtr d);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync Bool (*I2CPutByte)(I2CDevPtr d, I2CByte data);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync Bool (*I2CGetByte)(I2CDevPtr d, I2CByte *data, Bool);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync DevUnion DriverPrivate;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int HoldTime; /* 1 / bus clock frequency, 5 or 2 usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int BitTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int ByteTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int AcknTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int StartTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int RiseFallTime; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CDevPtr FirstDev;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CBusPtr NextBus;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync Bool (*I2CWriteRead)(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CByte *ReadBuffer, int nRead);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync} I2CBusRec;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define CreateI2CBusRec xf86CreateI2CBusRec
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT I2CBusPtr xf86CreateI2CBusRec(void);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define DestroyI2CBusRec xf86DestroyI2CBusRec
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT void xf86DestroyI2CBusRec(I2CBusPtr pI2CBus, Bool unalloc, Bool devs_too);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define I2CBusInit xf86I2CBusInit
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CBusInit(I2CBusPtr pI2CBus);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT I2CBusPtr xf86I2CFindBus(int scrnIndex, char *name);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT int xf86I2CGetScreenBuses(int scrnIndex, I2CBusPtr **pppI2CBus);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* I2C slave devices */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynctypedef struct _I2CDevRec {
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync char * DevName;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int BitTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int ByteTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int AcknTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int StartTimeout; /* usec */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CSlaveAddr SlaveAddr;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CBusPtr pI2CBus;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CDevPtr NextDev;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync DevUnion DriverPrivate;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync} I2CDevRec;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define CreateI2CDevRec xf86CreateI2CDevRec
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT I2CDevPtr xf86CreateI2CDevRec(void);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT void xf86DestroyI2CDevRec(I2CDevPtr pI2CDev, Bool unalloc);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define I2CDevInit xf86I2CDevInit
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CDevInit(I2CDevPtr pI2CDev);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT I2CDevPtr xf86I2CFindDev(I2CBusPtr, I2CSlaveAddr);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* See descriptions of these functions in xf86i2c.c */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define I2CProbeAddress xf86I2CProbeAddress
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CProbeAddress(I2CBusPtr pI2CBus, I2CSlaveAddr);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define I2C_WriteRead xf86I2CWriteRead
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CWriteRead(I2CDevPtr d, I2CByte *WriteBuffer, int nWrite,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync I2CByte *ReadBuffer, int nRead);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define xf86I2CRead(d, rb, nr) xf86I2CWriteRead(d, NULL, 0, rb, nr)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CReadStatus(I2CDevPtr d, I2CByte *pbyte);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CReadByte(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CReadBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *pbyte, int n);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CReadWord(I2CDevPtr d, I2CByte subaddr, unsigned short *pword);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define xf86I2CWrite(d, wb, nw) xf86I2CWriteRead(d, wb, nw, NULL, 0)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CWriteByte(I2CDevPtr d, I2CByte subaddr, I2CByte byte);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CWriteBytes(I2CDevPtr d, I2CByte subaddr, I2CByte *WriteBuffer, int nWrite);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CWriteWord(I2CDevPtr d, I2CByte subaddr, unsigned short word);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT Bool xf86I2CWriteVec(I2CDevPtr d, I2CByte *vec, int nValues);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#endif /*_XF86I2C_H */