1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2c-mux-gpio interface to platform code
5 * Peter Korsgaard <peter.korsgaard@barco.com>
8 #ifndef _LINUX_I2C_MUX_GPIO_H
9 #define _LINUX_I2C_MUX_GPIO_H
11 /* MUX has no specific idle mode */
12 #define I2C_MUX_GPIO_NO_IDLE ((unsigned)-1)
15 * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
16 * @parent: Parent I2C bus adapter number
17 * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
18 * @values: Array of bitmasks of GPIO settings (low/high) for each
20 * @n_values: Number of multiplexer positions (busses to instantiate)
21 * @classes: Optional I2C auto-detection classes
22 * @gpio_chip: Optional GPIO chip name; if set, GPIO pin numbers are given
23 * relative to the base GPIO number of that chip
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
28 struct i2c_mux_gpio_platform_data {
31 const unsigned *values;
33 const unsigned *classes;
35 const unsigned *gpios;
40 #endif /* _LINUX_I2C_MUX_GPIO_H */