gpio-i2cmux.h
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/*
* gpio-i2cmux interface to platform code
*
* Peter Korsgaard <peter.korsgaard@barco.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _LINUX_GPIO_I2CMUX_H
#define _LINUX_GPIO_I2CMUX_H
/* MUX has no specific idle mode */
#define GPIO_I2CMUX_NO_IDLE ((unsigned)-1)
/**
* struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux
* @parent: Parent I2C bus adapter number
* @base_nr: Base I2C bus number to number adapters from or zero for dynamic
* @values: Array of bitmasks of GPIO settings (low/high) for each
* position
* @n_values: Number of multiplexer positions (busses to instantiate)
* @gpios: Array of GPIO numbers used to control MUX
* @n_gpios: Number of GPIOs used to control MUX
* @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
*/
struct gpio_i2cmux_platform_data {
int parent;
int base_nr;
const unsigned *values;
int n_values;
const unsigned *gpios;
int n_gpios;
unsigned idle;
};
#endif /* _LINUX_GPIO_I2CMUX_H */