C++ (Cpp) rk30_gpio_get_function Beispiele

Beispiel #1

Datei: rk30xx_gpio.c Projekt: MattDooner/freebsd-west

static int
rk30_gpio_attach(device_t dev)
{
	struct rk30_gpio_softc *sc = device_get_softc(dev);
	uint32_t func;
	int i, rid;
	phandle_t gpio;

	sc->sc_dev = dev;

	mtx_init(&sc->sc_mtx, "rk30 gpio", "gpio", MTX_DEF);

	rid = 0;
	sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (!sc->sc_mem_res) {
		device_printf(dev, "cannot allocate memory window\n");
		return (ENXIO);
	}

	sc->sc_bst = rman_get_bustag(sc->sc_mem_res);
	sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res);

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (!sc->sc_irq_res) {
		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
		device_printf(dev, "cannot allocate interrupt\n");
		return (ENXIO);
	}

	/* Find our node. */
	gpio = ofw_bus_get_node(sc->sc_dev);

	if (!OF_hasprop(gpio, "gpio-controller"))
		/* Node is not a GPIO controller. */
		goto fail;

	/* Initialize the software controlled pins. */
	for (i = 0; i < RK30_GPIO_PINS; i++) {
		snprintf(sc->sc_gpio_pins[i].gp_name, GPIOMAXNAME,
		    "pin %d", i);
		func = rk30_gpio_get_function(sc, i);
		sc->sc_gpio_pins[i].gp_pin = i;
		sc->sc_gpio_pins[i].gp_caps = RK30_GPIO_DEFAULT_CAPS;
		sc->sc_gpio_pins[i].gp_flags = rk30_gpio_func_flag(func);
	}
	sc->sc_gpio_npins = i;

	device_add_child(dev, "gpioc", device_get_unit(dev));
	device_add_child(dev, "gpiobus", device_get_unit(dev));
	return (bus_generic_attach(dev));

fail:
	if (sc->sc_irq_res)
		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
	if (sc->sc_mem_res)
		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
	return (ENXIO);
}

Beispiel #2

Datei: rk30xx_gpio.c Projekt: jaredmcneill/freebsd

static int
rk30_gpio_attach(device_t dev)
{
	struct rk30_gpio_softc *sc = device_get_softc(dev);
	int i, rid;
	phandle_t gpio;
	unsigned long start;

	if (rk30_gpio_sc)
		return (ENXIO);
	sc->sc_dev = dev;
	mtx_init(&sc->sc_mtx, "rk30 gpio", "gpio", MTX_DEF);

	rid = 0;
	sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (!sc->sc_mem_res) {
		device_printf(dev, "cannot allocate memory window\n");
		goto fail;
	}
	sc->sc_bst = rman_get_bustag(sc->sc_mem_res);
	sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res);
	/* Check the unit we are attaching by our base address. */
	sc->sc_bank = -1;
	start = rman_get_start(sc->sc_mem_res);
	for (i = 0; i < nitems(rk30_gpio_base_addr); i++) {
		if (rk30_gpio_base_addr[i] == start) {
			sc->sc_bank = i;
			break;
		}
	}
	if (sc->sc_bank == -1) {
		device_printf(dev,
		    "unsupported device unit (only GPIO0..3 are supported)\n");
		goto fail;
	}

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (!sc->sc_irq_res) {
		device_printf(dev, "cannot allocate interrupt\n");
		goto fail;
	}

	/* Find our node. */
	gpio = ofw_bus_get_node(sc->sc_dev);

	if (!OF_hasprop(gpio, "gpio-controller"))
		/* Node is not a GPIO controller. */
		goto fail;

	/* Initialize the software controlled pins. */
	for (i = 0; i < RK30_GPIO_PINS; i++) {
		snprintf(sc->sc_gpio_pins[i].gp_name, GPIOMAXNAME,
		    "pin %d", i);
		sc->sc_gpio_pins[i].gp_pin = i;
		sc->sc_gpio_pins[i].gp_caps = RK30_GPIO_DEFAULT_CAPS;
		sc->sc_gpio_pins[i].gp_flags = rk30_gpio_get_function(sc, i);
	}
	sc->sc_gpio_npins = i;
	rk30_gpio_sc = sc;
	rk30_gpio_init();
	sc->sc_busdev = gpiobus_attach_bus(dev);
	if (sc->sc_busdev == NULL)
		goto fail;

	return (0);

fail:
	if (sc->sc_irq_res)
		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
	if (sc->sc_mem_res)
		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
	mtx_destroy(&sc->sc_mtx);

	return (ENXIO);
}