Blame view

include/linux/gpio-i2cmux.h 1.13 KB
92ed1a76c   Peter Korsgaard   i2c: Add generic ...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
  /*
   * gpio-i2cmux 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_GPIO_I2CMUX_H
  #define _LINUX_GPIO_I2CMUX_H
  
  /* MUX has no specific idle mode */
  #define GPIO_I2CMUX_NO_IDLE	((unsigned)-1)
  
  /**
   * struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux
   * @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)
   * @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 gpio_i2cmux_platform_data {
  	int parent;
  	int base_nr;
  	const unsigned *values;
  	int n_values;
  	const unsigned *gpios;
  	int n_gpios;
  	unsigned idle;
  };
  
  #endif /* _LINUX_GPIO_I2CMUX_H */