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1 | /* |
2 | * i2c-mux-gpio interface to platform code |
3 | * |
4 | * Peter Korsgaard <peter.korsgaard@barco.com> |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License version 2 as |
8 | * published by the Free Software Foundation. |
9 | */ |
10 | |
11 | #ifndef _LINUX_I2C_MUX_GPIO_H |
12 | #define _LINUX_I2C_MUX_GPIO_H |
13 | |
14 | /* MUX has no specific idle mode */ |
15 | #define I2C_MUX_GPIO_NO_IDLE ((unsigned)-1) |
16 | |
17 | /** |
18 | * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio |
19 | * @parent: Parent I2C bus adapter number |
20 | * @base_nr: Base I2C bus number to number adapters from or zero for dynamic |
21 | * @values: Array of bitmasks of GPIO settings (low/high) for each |
22 | * position |
23 | * @n_values: Number of multiplexer positions (busses to instantiate) |
24 | * @classes: Optional I2C auto-detection classes |
25 | * @gpio_chip: Optional GPIO chip name; if set, GPIO pin numbers are given |
26 | * relative to the base GPIO number of that chip |
27 | * @gpios: Array of GPIO numbers used to control MUX |
28 | * @n_gpios: Number of GPIOs used to control MUX |
29 | * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used |
30 | */ |
31 | struct i2c_mux_gpio_platform_data { |
32 | int parent; |
33 | int base_nr; |
34 | const unsigned *values; |
35 | int n_values; |
36 | const unsigned *classes; |
37 | char *gpio_chip; |
38 | const unsigned *gpios; |
39 | int n_gpios; |
40 | unsigned idle; |
41 | }; |
42 | |
43 | #endif /* _LINUX_I2C_MUX_GPIO_H */ |
44 |
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