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< * $Id: iiconf.c,v 1.2 1998/10/31 11:31:07 nsouch Exp $
---
> * $Id: iiconf.c,v 1.3 1998/11/22 22:01:42 nsouch Exp $
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< if (child)
< device_set_desc(child, "Philips I2C bus");
<
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> * iicbus_started()
> *
> * Test if the iicbus is started by the controller
> */
> int
> iicbus_started(device_t bus)
> {
> struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
>
> return (sc->started);
> }
>
> /*
> * iicbus_start()
> *
> * Send start condition to the slave addressed by 'slave'
> */
> int
> iicbus_start(device_t bus, u_char slave, int timeout)
> {
> struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
> int error = 0;
>
> if (sc->started)
> return (EINVAL); /* bus already started */
>
> if (!(error = IICBUS_START(device_get_parent(bus), slave, timeout)))
> sc->started = slave;
> else
> sc->started = 0;
>
> return (error);
> }
>
> /*
> * iicbus_stop()
> *
> * Send stop condition to the bus
> */
> int
> iicbus_stop(device_t bus)
> {
> struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
> int error = 0;
>
> if (!sc->started)
> return (EINVAL); /* bus not started */
>
> error = IICBUS_STOP(device_get_parent(bus));
>
> /* refuse any further access */
> sc->started = 0;
>
> return (error);
> }
>
> /*
> * iicbus_write()
> *
> * Write a block of data to the slave previously started by
> * iicbus_start() call
> */
> int
> iicbus_write(device_t bus, char *buf, int len, int *sent, int timeout)
> {
> struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
>
> /* a slave must have been started with the appropriate address */
> if (!sc->started || (sc->started & LSB))
> return (EINVAL);
>
> return (IICBUS_WRITE(device_get_parent(bus), buf, len, sent, timeout));
> }
>
> /*
> * iicbus_read()
> *
> * Read a block of data from the slave previously started by
> * iicbus_read() call
> */
> int
> iicbus_read(device_t bus, char *buf, int len, int *read, int last, int delay)
> {
> struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
>
> /* a slave must have been started with the appropriate address */
> if (!sc->started || !(sc->started & LSB))
> return (EINVAL);
>
> return (IICBUS_READ(device_get_parent(bus), buf, len, read, last, delay));
> }
>
> /*
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>