linux/platform_data/i2c-mux-reg.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  * I2C multiplexer using a single register
0004  *
0005  * Copyright 2015 Freescale Semiconductor
0006  * York Sun <yorksun@freescale.com>
0007  */
0008
0009 #ifndef __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
0010 #define __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
0011
0012 /**
0013  * struct i2c_mux_reg_platform_data - Platform-dependent data for i2c-mux-reg
0014  * @parent: Parent I2C bus adapter number
0015  * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
0016  * @values: Array of value for each channel
0017  * @n_values: Number of multiplexer channels
0018  * @little_endian: Indicating if the register is in little endian
0019  * @write_only: Reading the register is not allowed by hardware
0020  * @classes: Optional I2C auto-detection classes
0021  * @idle: Value to write to mux when idle
0022  * @idle_in_use: indicate if idle value is in use
0023  * @reg: Virtual address of the register to switch channel
0024  * @reg_size: register size in bytes
0025  */
0026 struct i2c_mux_reg_platform_data {
0027     int parent;
0028     int base_nr;
0029     const unsigned int *values;
0030     int n_values;
0031     bool little_endian;
0032     bool write_only;
0033     const unsigned int *classes;
0034     u32 idle;
0035     bool idle_in_use;
0036     void __iomem *reg;
0037     resource_size_t reg_size;
0038 };
0039
0040 #endif  /* __LINUX_PLATFORM_DATA_I2C_MUX_REG_H */