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Peter Korsgaard92ed1a72011-01-10 22:11:23 +01001/*
2 * gpio-i2cmux interface to platform code
3 *
4 * Peter Korsgaard <peter.korsgaard@barco.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef _LINUX_GPIO_I2CMUX_H
12#define _LINUX_GPIO_I2CMUX_H
13
14/* MUX has no specific idle mode */
15#define GPIO_I2CMUX_NO_IDLE ((unsigned)-1)
16
17/**
18 * struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux
19 * @parent: Parent I2C bus adapter number
20 * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
21 * @values: Array of bitmasks of GPIO settings (low/high) for each
22 * position
23 * @n_values: Number of multiplexer positions (busses to instantiate)
24 * @gpios: Array of GPIO numbers used to control MUX
25 * @n_gpios: Number of GPIOs used to control MUX
26 * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
27 */
28struct gpio_i2cmux_platform_data {
29 int parent;
30 int base_nr;
31 const unsigned *values;
32 int n_values;
33 const unsigned *gpios;
34 int n_gpios;
35 unsigned idle;
36};
37
38#endif /* _LINUX_GPIO_I2CMUX_H */