release/src-rt-6.x.4708/linux/linux-2.6.36/include/linux/i2c/pca953x.h

   1 #ifndef _LINUX_PCA953X_H
   2 #define _LINUX_PCA953X_H
   3
   4 #include <linux/types.h>
   5 #include <linux/i2c.h>
   6
   7 /* platform data for the PCA9539 16-bit I/O expander driver */
   8
   9 struct pca953x_platform_data {
  10         /* number of the first GPIO */
  11         unsigned        gpio_base;
  12
  13         /* initial polarity inversion setting */
  14         uint16_t        invert;
  15
  16         /* interrupt base */
  17         int             irq_base;
  18
  19         void            *context;       /* param to setup/teardown */
  20
  21         int             (*setup)(struct i2c_client *client,
  22                                 unsigned gpio, unsigned ngpio,
  23                                 void *context);
  24         int             (*teardown)(struct i2c_client *client,
  25                                 unsigned gpio, unsigned ngpio,
  26                                 void *context);
  27         const char      *const *names;
  28 };
  29
  30 #endif /* _LINUX_PCA953X_H */