sys/dev/spibus/spibusvar.h

   1 /* $FreeBSD$ */
   2
   3 #define SPIBUS_IVAR(d) (struct spibus_ivar *) device_get_ivars(d)
   4 #define SPIBUS_SOFTC(d) (struct spibus_softc *) device_get_softc(d)
   5
   6 struct spibus_softc
   7 {
   8         device_t        dev;
   9 };
  10
  11 struct spibus_ivar
  12 {
  13         uint32_t        cs;
  14 };
  15
  16 enum {
  17         SPIBUS_IVAR_CS          /* chip select that we're on */
  18 };
  19
  20 #define SPIBUS_ACCESSOR(A, B, T)                                        \
  21 __inline static int                                                     \
  22 spibus_get_ ## A(device_t dev, T *t)                                    \
  23 {                                                                       \
  24         return BUS_READ_IVAR(device_get_parent(dev), dev,               \
  25             SPIBUS_IVAR_ ## B, (uintptr_t *) t);                        \
  26 }
  27
  28 SPIBUS_ACCESSOR(cs,             CS,             uint32_t)