diff options
Diffstat (limited to 'sys/dev/spibus/spibusvar.h')
-rw-r--r-- | sys/dev/spibus/spibusvar.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/dev/spibus/spibusvar.h b/sys/dev/spibus/spibusvar.h new file mode 100644 index 0000000..78baaac --- /dev/null +++ b/sys/dev/spibus/spibusvar.h @@ -0,0 +1,28 @@ +/ * $FreeBSD$ */ + +#define SPIBUS_IVAR(d) (struct spibus_ivar *) device_get_ivars(d) +#define SPIBUS_SOFTC(d) (struct spibus_softc *) device_get_softc(d) + +struct spibus_softc +{ + device_t dev; +}; + +struct spibus_ivar +{ + uint32_t cs; +}; + +enum { + SPIBUS_IVAR_CS /* chip select that we're on */ +}; + +#define SPIBUS_ACCESSOR(A, B, T) \ +__inline static int \ +spibus_get_ ## A(device_t dev, T *t) \ +{ \ + return BUS_READ_IVAR(device_get_parent(dev), dev, \ + SPIBUS_IVAR_ ## B, (uintptr_t *) t); \ +} + +SPIBUS_ACCESSOR(cs, CS, uint32_t) |