include/tca642x.h

   1 /*
   2  * Copyright 2013 Texas Instruments, Inc.
   3  * Author: Dan Murphy <dmurphy@ti.com>
   4  *
   5  * Derived work from the pca953x.c driver
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #ifndef __TCA642X_H_
  24 #define __TCA642X_H_
  25
  26 #ifdef CONFIG_CMD_TCA642X
  27 enum {
  28         TCA642X_CMD_INFO,
  29         TCA642X_CMD_DEVICE,
  30         TCA642X_CMD_OUTPUT,
  31         TCA642X_CMD_INPUT,
  32         TCA642X_CMD_INVERT,
  33 };
  34 #endif
  35
  36 #define TCA642X_OUT_LOW         0
  37 #define TCA642X_OUT_HIGH        1
  38 #define TCA642X_POL_NORMAL      0
  39 #define TCA642X_POL_INVERT      1
  40 #define TCA642X_DIR_OUT         0
  41 #define TCA642X_DIR_IN          1
  42
  43 /* Default to an address that hopefully won't corrupt other i2c devices */
  44 #ifndef CONFIG_SYS_I2C_TCA642X_ADDR
  45 #define CONFIG_SYS_I2C_TCA642X_ADDR     (~0)
  46 #endif
  47
  48 /* Default to an address that hopefully won't corrupt other i2c devices */
  49 #ifndef CONFIG_SYS_I2C_TCA642X_BUS_NUM
  50 #define CONFIG_SYS_I2C_TCA642X_BUS_NUM  (0)
  51 #endif
  52
  53 struct tca642x_bank_info {
  54         uint8_t input_reg;
  55         uint8_t output_reg;
  56         uint8_t polarity_reg;
  57         uint8_t configuration_reg;
  58 };
  59
  60 int tca642x_set_val(uchar chip, uint8_t gpio_bank,
  61                         uint8_t reg_bit, uint8_t data);
  62 int tca642x_set_pol(uchar chip, uint8_t gpio_bank,
  63                         uint8_t reg_bit, uint8_t data);
  64 int tca642x_set_dir(uchar chip, uint8_t gpio_bank,
  65                         uint8_t reg_bit, uint8_t data);
  66 int tca642x_get_val(uchar chip, uint8_t gpio_bank);
  67 int tca642x_set_inital_state(uchar chip, struct tca642x_bank_info init_data[]);
  68
  69 #endif /* __TCA642X_H_ */