Ejemplos de GPIOBUS_LOCK_INIT en C++ (Cpp)

Ejemplo n.º 1

Archivo: gpiobus.c Proyecto: fengsi/freebsd

int
gpiobus_init_softc(device_t dev)
{
	struct gpiobus_softc *sc;

	sc = GPIOBUS_SOFTC(dev);
	sc->sc_busdev = dev;
	sc->sc_dev = device_get_parent(dev);
	sc->sc_intr_rman.rm_type = RMAN_ARRAY;
	sc->sc_intr_rman.rm_descr = "GPIO Interrupts";
	if (rman_init(&sc->sc_intr_rman) != 0 ||
	    rman_manage_region(&sc->sc_intr_rman, 0, ~0) != 0)
		panic("%s: failed to set up rman.", __func__);

	if (GPIO_PIN_MAX(sc->sc_dev, &sc->sc_npins) != 0)
		return (ENXIO);

	KASSERT(sc->sc_npins != 0, ("GPIO device with no pins"));

	/* Pins = GPIO_PIN_MAX() + 1 */
	sc->sc_npins++;

	sc->sc_pins = malloc(sizeof(*sc->sc_pins) * sc->sc_npins, M_DEVBUF,
	    M_NOWAIT | M_ZERO);
	if (sc->sc_pins == NULL)
		return (ENOMEM);

	/* Initialize the bus lock. */
	GPIOBUS_LOCK_INIT(sc);

	return (0);
}

Ejemplo n.º 2

static int
gpiobus_attach(device_t dev)
{
	struct gpiobus_softc *sc = GPIOBUS_SOFTC(dev);
	int res;

	sc->sc_busdev = dev;
	sc->sc_dev = device_get_parent(dev);
	res = GPIO_PIN_MAX(sc->sc_dev, &sc->sc_npins);
	if (res)
		return (ENXIO);

	KASSERT(sc->sc_npins != 0, ("GPIO device with no pins"));

	/*
	 * Increase to get number of pins
	 */
	sc->sc_npins++;

	sc->sc_pins_mapped = malloc(sizeof(int) * sc->sc_npins, M_DEVBUF, 
	    M_NOWAIT | M_ZERO);

	if (!sc->sc_pins_mapped)
		return (ENOMEM);

	/* init bus lock */
	GPIOBUS_LOCK_INIT(sc);

	/*
	 * Get parent's pins and mark them as unmapped
	 */
	bus_generic_probe(dev);
	bus_enumerate_hinted_children(dev);

	return (bus_generic_attach(dev));
}