include/linux/spi/mcp23s08.h

   1
   2 /* FIXME driver should be able to handle all four slaves that
   3  * can be hooked up to each chipselect, as well as IRQs...
   4  */
   5
   6 struct mcp23s08_platform_data {
   7         /* four slaves can share one SPI chipselect */
   8         u8              slave;
   9
  10         /* number assigned to the first GPIO */
  11         unsigned        base;
  12
  13         /* pins with pullups */
  14         u8              pullups;
  15
  16         void            *context;       /* param to setup/teardown */
  17
  18         int             (*setup)(struct spi_device *spi,
  19                                         int gpio, unsigned ngpio,
  20                                         void *context);
  21         int             (*teardown)(struct spi_device *spi,
  22                                         int gpio, unsigned ngpio,
  23                                         void *context);
  24 };