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MFp4: Create an ivar for each iic device on the iicbus. This ivar

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holds the device's address.
This commit is contained in:
Warner Losh 2007-03-23 23:02:33 +00:00
parent e3da012f00
commit ee952d0ef6
1 changed files with 24 additions and 1 deletions
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25
sys/dev/iicbus/iicbus.h
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@ -29,13 +29,36 @@
#ifndef __IICBUS_H
#define __IICBUS_H
struct iicbus_softc {
#define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d)
#define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d)
struct iicbus_softc
{
device_t dev; /* Myself */
device_t owner; /* iicbus owner device structure */
u_char started; /* address of the 'started' slave
* 0 if no start condition succeeded */
};
struct iicbus_ivar
{
uint32_t addr;
};
enum {
IICBUS_IVAR_ADDR /* Address or base address */
};
#define IICBUS_ACCESSOR(A, B, T) \
__inline static int \
iicbus_get_ ## A(device_t dev, T *t) \
{ \
return BUS_READ_IVAR(device_get_parent(dev), dev, \
IICBUS_IVAR_ ## B, (uintptr_t *) t); \
}
IICBUS_ACCESSOR(addr, ADDR, uint32_t)
extern int iicbus_generic_intr(device_t dev, int event, char *buf);
extern driver_t iicbus_driver;