xref: /freebsd/sys/dev/spibus/spibusvar.h (revision de7b456e596ff18032d2cbfdf244c66f36770da4)
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 static inline 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)
29 
30 extern driver_t spibus_driver;
31 extern devclass_t spibus_devclass;
32