/*
   * Copyright 2013 Texas Instruments, Inc.
   * Author: Dan Murphy <dmurphy@ti.com>
   *
   * Derived work from the pca953x.c driver
   *
   * 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 __TCA642X_H_
  #define __TCA642X_H_
  
  #ifdef CONFIG_CMD_TCA642X
  enum {
  	TCA642X_CMD_INFO,
  	TCA642X_CMD_DEVICE,
  	TCA642X_CMD_OUTPUT,
  	TCA642X_CMD_INPUT,
  	TCA642X_CMD_INVERT,
  };
  #endif
  
  #define TCA642X_OUT_LOW		0
  #define TCA642X_OUT_HIGH	1
  #define TCA642X_POL_NORMAL	0
  #define TCA642X_POL_INVERT	1
  #define TCA642X_DIR_OUT		0
  #define TCA642X_DIR_IN		1
  
  /* Default to an address that hopefully won't corrupt other i2c devices */
  #ifndef CONFIG_SYS_I2C_TCA642X_ADDR
  #define CONFIG_SYS_I2C_TCA642X_ADDR	(~0)
  #endif
  
  /* Default to an address that hopefully won't corrupt other i2c devices */
  #ifndef CONFIG_SYS_I2C_TCA642X_BUS_NUM
  #define CONFIG_SYS_I2C_TCA642X_BUS_NUM	(0)
  #endif
  
  struct tca642x_bank_info {
  	uint8_t input_reg;
  	uint8_t output_reg;
  	uint8_t polarity_reg;
  	uint8_t configuration_reg;
  };
  
  int tca642x_set_val(uchar chip, uint8_t gpio_bank,
  			uint8_t reg_bit, uint8_t data);
  int tca642x_set_pol(uchar chip, uint8_t gpio_bank,
  			uint8_t reg_bit, uint8_t data);
  int tca642x_set_dir(uchar chip, uint8_t gpio_bank,
  			uint8_t reg_bit, uint8_t data);
  int tca642x_get_val(uchar chip, uint8_t gpio_bank);
  int tca642x_set_inital_state(uchar chip, struct tca642x_bank_info init_data[]);
  
  #endif /* __TCA642X_H_ */