/* * i2c-mux-gpio 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_I2C_MUX_GPIO_H #define _LINUX_I2C_MUX_GPIO_H /* MUX has no specific idle mode */ #define I2C_MUX_GPIO_NO_IDLE ((unsigned)-1) /** * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio * @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) * @classes: Optional I2C auto-detection classes * @gpio_chip: Optional GPIO chip name; if set, GPIO pin numbers are given * relative to the base GPIO number of that chip * @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 i2c_mux_gpio_platform_data { int parent; int base_nr; const unsigned *values; int n_values; const unsigned *classes; char *gpio_chip; const unsigned *gpios; int n_gpios; unsigned idle; }; #endif /* _LINUX_I2C_MUX_GPIO_H */