target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.h

   1 #ifndef _I2C_H
   2 #define _I2C_H
   3
   4 int i2c_init(void);
   5
   6 /* High level I2C actions */
   7 int i2c_writereg(unsigned char theSlave, unsigned char theReg, unsigned char theValue);
   8 unsigned char i2c_readreg(unsigned char theSlave, unsigned char theReg);
   9
  10 /* Low level I2C */
  11 int i2c_start(void);
  12 int i2c_stop(void);
  13 int i2c_outbyte(unsigned char x);
  14 unsigned char i2c_inbyte(void);
  15 int i2c_getack(void);
  16 void i2c_sendack(void);
  17 void i2c_sendnack(void);
  18
  19 /**GVC**/
  20 /* New low level I2C functions */
  21 int i2c_read( unsigned char slave, unsigned char* rbuf, unsigned char rlen );
  22 int i2c_write( unsigned char slave, unsigned char* wbuf, unsigned char wlen );
  23 int i2c_writeread( unsigned char  slave
  24                  , unsigned char* wbuf
  25                  , unsigned char  wlen
  26                  , unsigned char* rbuf
  27                  , unsigned char  rlen
  28                  );
  29 /**END GVC**/
  30 #endif /* _I2C_H */