linux/platform_data/i2c-mux-gpio.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * i2c-mux-gpio interface to platform code
0004  *
0005  * Peter Korsgaard <peter.korsgaard@barco.com>
0006  */
0007
0008 #ifndef _LINUX_I2C_MUX_GPIO_H
0009 #define _LINUX_I2C_MUX_GPIO_H
0010
0011 /* MUX has no specific idle mode */
0012 #define I2C_MUX_GPIO_NO_IDLE    ((unsigned)-1)
0013
0014 /**
0015  * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
0016  * @parent: Parent I2C bus adapter number
0017  * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
0018  * @values: Array of bitmasks of GPIO settings (low/high) for each
0019  *  position
0020  * @n_values: Number of multiplexer positions (busses to instantiate)
0021  * @classes: Optional I2C auto-detection classes
0022  * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
0023  */
0024 struct i2c_mux_gpio_platform_data {
0025     int parent;
0026     int base_nr;
0027     const unsigned *values;
0028     int n_values;
0029     const unsigned *classes;
0030     unsigned idle;
0031 };
0032
0033 #endif /* _LINUX_I2C_MUX_GPIO_H */