1/*
 2 * i2c-mux-gpio 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_I2C_MUX_GPIO_H
12#define _LINUX_I2C_MUX_GPIO_H
13
14/* MUX has no specific idle mode */
15#define I2C_MUX_GPIO_NO_IDLE	((unsigned)-1)
16
17/**
18 * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
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 * @classes: Optional I2C auto-detection classes
25 * @gpio_chip: Optional GPIO chip name; if set, GPIO pin numbers are given
26 *	relative to the base GPIO number of that chip
27 * @gpios: Array of GPIO numbers used to control MUX
28 * @n_gpios: Number of GPIOs used to control MUX
29 * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
30 */
31struct i2c_mux_gpio_platform_data {
32	int parent;
33	int base_nr;
34	const unsigned *values;
35	int n_values;
36	const unsigned *classes;
37	char *gpio_chip;
38	const unsigned *gpios;
39	int n_gpios;
40	unsigned idle;
41};
42
43#endif /* _LINUX_I2C_MUX_GPIO_H */