Initial revision

1 files changed, 93 insertions, 0 deletions

diff --git a/hw/xfree86/i2c/xf86i2c.h b/hw/xfree86/i2c/xf86i2c.h
new file mode 100644
index 000000000..42b68a179
--- /dev/null
+++ b/hw/xfree86/i2c/xf86i2c.h
@@ -0,0 +1,93 @@
+/* 
+ *  Copyright (C) 1998 Itai Nahshon, Michael Schimek
+ */
+
+/* $XFree86: xc/programs/Xserver/hw/xfree86/i2c/xf86i2c.h,v 1.8 2001/07/19 14:19:40 tsi Exp $ */
+#ifndef _XF86I2C_H
+#define _XF86I2C_H
+
+#include "miscstruct.h"
+
+typedef unsigned char  I2CByte;
+typedef unsigned short I2CSlaveAddr;
+
+typedef struct _I2CBusRec *I2CBusPtr;
+typedef struct _I2CDevRec *I2CDevPtr;
+
+/* I2C masters have to register themselves */
+
+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        	(*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(int scrnIndex, char *name);
+
+/* 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 */