linux/include/linux/via_i2c.h
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   1/*
   2 * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
   3 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
   4
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public
   7 * License as published by the Free Software Foundation;
   8 * either version 2, or (at your option) any later version.
   9
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
  12 * the implied warranty of MERCHANTABILITY or FITNESS FOR
  13 * A PARTICULAR PURPOSE.See the GNU General Public License
  14 * for more details.
  15
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc.,
  19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20 */
  21#ifndef __VIA_I2C_H__
  22#define __VIA_I2C_H__
  23
  24#include <linux/i2c.h>
  25#include <linux/i2c-algo-bit.h>
  26
  27struct via_i2c_stuff {
  28        u16 i2c_port;                   /* GPIO or I2C port */
  29        u16 is_active;                  /* Being used as I2C? */
  30        struct i2c_adapter adapter;
  31        struct i2c_algo_bit_data algo;
  32};
  33
  34
  35int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata);
  36int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data);
  37int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len);
  38struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which);
  39
  40extern int viafb_i2c_init(void);
  41extern void viafb_i2c_exit(void);
  42#endif /* __VIA_I2C_H__ */
  43
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