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Dan Murphy61c17752013-07-11 13:10:27 -05001/*
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
27enum {
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
53struct 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
60int tca642x_set_val(uchar chip, uint8_t gpio_bank,
61 uint8_t reg_bit, uint8_t data);
62int tca642x_set_pol(uchar chip, uint8_t gpio_bank,
63 uint8_t reg_bit, uint8_t data);
64int tca642x_set_dir(uchar chip, uint8_t gpio_bank,
65 uint8_t reg_bit, uint8_t data);
66int tca642x_get_val(uchar chip, uint8_t gpio_bank);
67int tca642x_set_inital_state(uchar chip, struct tca642x_bank_info init_data[]);
68
69#endif /* __TCA642X_H_ */