i2ccore.h

linux下的BOOT程序原码,有需要的可以来下,保证好用

/*
 * i2cCore.h
 *
 * Prototypes, etc. for the Motorola MPC8220
 * embedded cpu chips
 *
 * 2004 (c) Freescale, Inc.
 * Author: TsiChung Liew <[e-mail]>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */
#ifndef __INCi2ccoreh
#define __INCi2ccoreh
#ifndef __ASSEMBLY__
/* device types */
#define I2C_DEVICE_TYPE_EEPROM 0
#define I2C_EEPROM_ADRS 0xa0
#define I2C_CTRL_ADRS   I2C_EEPROM_ADRS
#define EEPROM_ADDR0    0xA2	/* on Dimm SPD eeprom */
#define EEPROM_ADDR1    0xA4	/* on Board SPD eeprom */
#define EEPROM_ADDR2    0xD2	/* non-standard eeprom - clock generator */
/* Control Register */
#define I2C_CTL_EN      0x80	/* I2C Enable                   */
#define I2C_CTL_IEN     0x40	/* I2C Interrupt Enable         */
#define I2C_CTL_STA     0x20	/* Master/Slave Mode select     */
#define I2C_CTL_TX      0x10	/* Transmit/Receive Mode Select */
#define I2C_CTL_TXAK    0x08	/* Transmit Acknowledge Enable  */
#define I2C_CTL_RSTA    0x04	/* Repeat Start                 */
/* Status Register */
#define I2C_STA_CF      0x80	/* Data Transfer       */
#define I2C_STA_AAS     0x40	/* Adressed As Slave   */
#define I2C_STA_BB      0x20	/* Bus Busy            */
#define I2C_STA_AL      0x10	/* Arbitration Lost    */
#define I2C_STA_SRW     0x04	/* Slave Read/Write    */
#define I2C_STA_IF      0x02	/* I2C Interrupt       */
#define I2C_STA_RXAK    0x01	/* Receive Acknowledge */
/* Interrupt Contol Register */
#define I2C_INT_BNBE2   0x80	/* Bus Not Busy Enable 2 */
#define I2C_INT_TE2     0x40	/* Transmit Enable 2     */
#define I2C_INT_RE2     0x20	/* Receive Enable 2      */
#define I2C_INT_IE2     0x10	/* Interrupt Enable 2    */
#define I2C_INT_BNBE1   0x08	/* Bus Not Busy Enable 1 */
#define I2C_INT_TE1     0x04	/* Transmit Enable 1     */
#define I2C_INT_RE1     0x02	/* Receive Enable 1      */
#define I2C_INT_IE1     0x01	/* Interrupt Enable 1    */
#define I2C_POLL_COUNT 0x100000
#define I2C_ENABLE      0x00000001
#define I2C_DISABLE     0x00000002
#define I2C_START       0x00000004
#define I2C_REPSTART    0x00000008
#define I2C_STOP        0x00000010
#define I2C_BITRATE     0x00000020
#define I2C_SLAVEADR    0x00000040
#define I2C_STARTADR    0x00000080
#undef TWOBYTES
typedef struct i2c_settings {
	/* Device settings */
	int bit_rate;		/* Device bit rate */
	u8 i2c_adr;		/* I2C address */
	u8 slv_adr;		/* Slave address */
#ifdef TWOBYTES
	u16 str_adr;		/* Start address */
#else
	u8 str_adr;		/* Start address */
#endif
	int xfer_size;		/* Transfer Size */

	int bI2c_en;		/* Enable or Disable */
	int cmdFlag;		/* I2c Command Flags */
} i2cset_t;

/*
int check_status(PSI2C pi2c, u8 sta_bit, u8 truefalse);
int i2c_enable(PSI2C pi2c, PI2CSET pi2cSet);
int i2c_disable(PSI2C pi2c);
int i2c_start(PSI2C pi2c, PI2CSET pi2cSet);
int i2c_stop(PSI2C pi2c);
int i2c_clear(PSI2C pi2c);
int i2c_readblock (PSI2C pi2c, PI2CSET pi2cSet, u8 *Data);
int i2c_writeblock (PSI2C pi2c, PI2CSET pi2cSet, u8 *Data);
int i2c_readbyte(PSI2C pi2c, u8 *readb, int *index);
int i2c_writebyte(PSI2C pi2c, u8 *writeb);
int SetI2cFDR( PSI2C pi2cRegs, int bitrate );
*/
#endif /* __ASSEMBLY__ */

#endif /* __INCi2ccoreh */