/* ------------------------------------------------------------------------- */
  /* i2c-algo-bit.h i2c driver algorithms for bit-shift adapters               */
  /* ------------------------------------------------------------------------- */
  /*   Copyright (C) 1995-99 Simon G. Vogl
  
      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., 51 Franklin Street, Fifth Floor, Boston,
      MA 02110-1301 USA.							     */
  /* ------------------------------------------------------------------------- */
  
  /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
     Frodo Looijaard <frodol@dds.nl> */
  
  #ifndef _LINUX_I2C_ALGO_BIT_H
  #define _LINUX_I2C_ALGO_BIT_H
  
  /* --- Defines for bit-adapters ---------------------------------------	*/
  /*
   * This struct contains the hw-dependent functions of bit-style adapters to
   * manipulate the line states, and to init any hw-specific features. This is
   * only used if you have more than one hw-type of adapter running.
   */
  struct i2c_algo_bit_data {
  	void *data;		/* private data for lowlevel routines */
  	void (*setsda) (void *data, int state);
  	void (*setscl) (void *data, int state);
  	int  (*getsda) (void *data);
  	int  (*getscl) (void *data);
  	int  (*pre_xfer)  (struct i2c_adapter *);
  	void (*post_xfer) (struct i2c_adapter *);
  
  	/* local settings */
  	int udelay;		/* half clock cycle time in us,
  				   minimum 2 us for fast-mode I2C,
  				   minimum 5 us for standard-mode I2C and SMBus,
  				   maximum 50 us for SMBus */
  	int timeout;		/* in jiffies */
  };
  
  int i2c_bit_add_bus(struct i2c_adapter *);
  int i2c_bit_add_numbered_bus(struct i2c_adapter *);
  extern const struct i2c_algorithm i2c_bit_algo;
  
  #endif /* _LINUX_I2C_ALGO_BIT_H */