tca642x.h
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/*
* 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_ */