1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * I2C multiplexer using a single register
4 *
5 * Copyright 2015 Freescale Semiconductor
6 * York Sun <yorksun@freescale.com>
7 */
8
9 #ifndef __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
10 #define __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
11
12 /**
13 * struct i2c_mux_reg_platform_data - Platform-dependent data for i2c-mux-reg
14 * @parent: Parent I2C bus adapter number
15 * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
16 * @values: Array of value for each channel
17 * @n_values: Number of multiplexer channels
18 * @little_endian: Indicating if the register is in little endian
19 * @write_only: Reading the register is not allowed by hardware
20 * @classes: Optional I2C auto-detection classes
21 * @idle: Value to write to mux when idle
22 * @idle_in_use: indicate if idle value is in use
23 * @reg: Virtual address of the register to switch channel
24 * @reg_size: register size in bytes
25 */
26 struct i2c_mux_reg_platform_data {
27 int parent;
28 int base_nr;
29 const unsigned int *values;
30 int n_values;
31 bool little_endian;
32 bool write_only;
33 const unsigned int *classes;
34 u32 idle;
35 bool idle_in_use;
36 void __iomem *reg;
37 resource_size_t reg_size;
38 };
39
40 #endif /* __LINUX_PLATFORM_DATA_I2C_MUX_REG_H */