w1-gpio: add GPIO w1 bus master driver
[linux-2.6.git] / include / linux / i2c / pca9539.h
1 /* platform data for the PCA9539 16-bit I/O expander driver */
2
3 struct pca9539_platform_data {
4         /* number of the first GPIO */
5         unsigned        gpio_base;
6
7         /* initial polarity inversion setting */
8         uint16_t        invert;
9
10         void            *context;       /* param to setup/teardown */
11
12         int             (*setup)(struct i2c_client *client,
13                                 unsigned gpio, unsigned ngpio,
14                                 void *context);
15         int             (*teardown)(struct i2c_client *client,
16                                 unsigned gpio, unsigned ngpio,
17                                 void *context);
18 };