omap3_i2c.h

Windows CE 6.0 BSP for the Beagle Board.

//
// Copyright (c) Special Computing.  All rights reserved. 
// Copyright (c) Microsoft Corporation.  All rights reserved.
// Copyright (c) Texas Instruments.  All rights reserved. 
//
//------------------------------------------------------------------------------
//
//  Header:  omap3_i2c.h
//
//  This header file is comprised of I2C module register details defined as
//  structures and macros for controlling I2C.
//
//------------------------------------------------------------------------------
#ifndef __OMAP3_I2C_H
#define __OMAP3_I2C_H

#if __cplusplus
extern "C" {
#endif

//------------------------------------------------------------------------------
// Base Address : OMAP3_I2C1_REGS_PA
//				  OMAP3_I2C2_REGS_PA
//				  OMAP3_I2C3_REGS_PA
//------------------------------------------------------------------------------

typedef volatile struct
{
	UINT16 usI2C_REV;                 //offset 0x00,revision reg
	UINT16 usRESERVED_0x02;
	UINT16 usI2C_IE;                  //offset 0x04,intr enable reg
	UINT16 usRESERVED_0x06;
	UINT16 usI2C_STAT;                //offset 0x08,I2C status reg
	UINT16 usRESERVED_1[3];
	UINT16 usI2C_SYSS;                //offset 0x10,module status info
	UINT16 usRESERVED_0x12;
	UINT16 usI2C_BUF;                 //offset 0x14,RX DMA chnl disabled
	UINT16 usRESERVED_0x16;
	UINT16 usI2C_CNT;                 //offset 0x18,no of bytes in I2C data payload
	UINT16 usRESERVED_0x1A;
	UINT16 usI2C_DATA;                //offset 0x1C,data reg for I2C
	UINT16 usRESERVED_0x1E;
	UINT16 usI2C_SYSC;                //offset 0x20,OCP i/f params
	UINT16 usRESERVED_0x22;
	UINT16 usI2C_CON;                 //offset 0x24,func features ctrl
	UINT16 usRESERVED_0x26;
	UINT16 usI2C_OA;                  //offset 0x28,7/10-bit own addr
	UINT16 usRESERVED_0x2A;
	UINT16 usI2C_SA;                  //offset 0x2C,/10-bit slave addr
	UINT16 usRESERVED_0x2E;
	UINT16 usI2C_PSC;                 //offset 0x30,prescale sampling clk divider
	UINT16 usRESERVED_0x32;
	UINT16 usI2C_SCLL;                //offset 0x34,SCL low time value
	UINT16 usRESERVED_0x36;
	UINT16 usI2C_SCLH;                //offset 0x38,SCL high time value
	UINT16 usRESERVED_0x3A;
	UINT16 usI2C_SYSTEST;             //offset 0x3C,sys lvl test bits
	UINT16 usRESERVED_0x3E;
	UINT16 usI2C_BUFSTAT;             //offset 0x40,FIFO status information
	UINT16 usRESERVED_0x42;
	UINT16 usI2C_OA1;                 //offset 0x44,I2C 7-bit or 10-bit address
	UINT16 usRESERVED_0x46;
	UINT16 usI2C_OA2;                 //offset 0x48,I2C 7-bit or 10-bit address
	UINT16 usRESERVED_0x4A;
	UINT16 usI2C_OA3;                 //offset 0x4C,I2C 7-bit or 10-bit address
	UINT16 usRESERVED_0x4E;
	UINT16 usI2C_ACTOA;               //offset 0x50,accessed slave Own Address indicators
	UINT16 usRESERVED_0x52;
	UINT16 usI2C_SBLOCK;              //offset 0x54,slave mode i2c bus lock features
}OMAP3_I2C_REGS;


//------------------------------------------------------------------------------

#define I2C_STAT_SBD            (1 << 15)
#define I2C_STAT_BB             (1 << 12)
#define I2C_STAT_ROVR           (1 << 11)
#define I2C_STAT_XUDF           (1 << 10)
#define I2C_STAT_AAS            (1 << 9)
#define I2C_STAT_GC             (1 << 5)
#define I2C_STAT_XRDY           (1 << 4)
#define I2C_STAT_RRDY           (1 << 3)
#define I2C_STAT_ARDY           (1 << 2)
#define I2C_STAT_NACK           (1 << 1)
#define I2C_STAT_AL             (1 << 0)

#define I2C_SYSS_RDONE          (1 << 0)

#define I2C_SYSC_SRST           (1 << 1)

#define I2C_CON_EN              (1 << 15)
#define I2C_CON_BE              (1 << 14)
#define I2C_CON_STB             (1 << 11)
#define I2C_CON_MST             (1 << 10)
#define I2C_CON_TRX             (1 << 9)
#define I2C_CON_XA              (1 << 8)
#define I2C_CON_STP             (1 << 1)
#define I2C_CON_STT             (1 << 0)

#define I2C_ACTOA_OA3_ACT       (1 << 3)
#define I2C_ACTOA_OA2_ACT       (1 << 2)
#define I2C_ACTOA_OA1_ACT       (1 << 1)
#define I2C_ACTOA_OA0_ACT       (1 << 0)

#define I2C_SBLOCK_OA3_EN       (1 << 3)
#define I2C_SBLOCK_OA2_EN       (1 << 2)
#define I2C_SBLOCK_OA1_EN       (1 << 1)
#define I2C_SBLOCK_OA0_EN       (1 << 0)

#if __cplusplus
}
#endif

#endif