include/linux/platform_data/i2c-mux-reg.h

   1 /*
   2  * I2C multiplexer using a single register
   3  *
   4  * Copyright 2015 Freescale Semiconductor
   5  * York Sun <yorksun@freescale.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  */
  12
  13 #ifndef __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
  14 #define __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
  15
  16 /**
  17  * struct i2c_mux_reg_platform_data - Platform-dependent data for i2c-mux-reg
  18  * @parent: Parent I2C bus adapter number
  19  * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
  20  * @values: Array of value for each channel
  21  * @n_values: Number of multiplexer channels
  22  * @little_endian: Indicating if the register is in little endian
  23  * @write_only: Reading the register is not allowed by hardware
  24  * @classes: Optional I2C auto-detection classes
  25  * @idle: Value to write to mux when idle
  26  * @idle_in_use: indicate if idle value is in use
  27  * @reg: Virtual address of the register to switch channel
  28  * @reg_size: register size in bytes
  29  */
  30 struct i2c_mux_reg_platform_data {
  31         int parent;
  32         int base_nr;
  33         const unsigned int *values;
  34         int n_values;
  35         bool little_endian;
  36         bool write_only;
  37         const unsigned int *classes;
  38         u32 idle;
  39         bool idle_in_use;
  40         void __iomem *reg;
  41         resource_size_t reg_size;
  42 };
  43
  44 #endif  /* __LINUX_PLATFORM_DATA_I2C_MUX_REG_H */