C++ (Cpp) rk30_gpio_pin_configure Examples

Example #1

File: rk30xx_gpio.c Project: MattDooner/freebsd-west

static int
rk30_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
{
	struct rk30_gpio_softc *sc = device_get_softc(dev);
	int i;

	for (i = 0; i < sc->sc_gpio_npins; i++) {
		if (sc->sc_gpio_pins[i].gp_pin == pin)
			break;
	}

	if (i >= sc->sc_gpio_npins)
		return (EINVAL);

	/* Check for unwanted flags. */
	if ((flags & sc->sc_gpio_pins[i].gp_caps) != flags)
		return (EINVAL);

	/* Can't mix input/output together. */
	if ((flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) ==
	    (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT))
		return (EINVAL);

	/* Can't mix pull-up/pull-down together. */
	if ((flags & (GPIO_PIN_PULLUP|GPIO_PIN_PULLDOWN)) ==
	    (GPIO_PIN_PULLUP|GPIO_PIN_PULLDOWN))
		return (EINVAL);

	rk30_gpio_pin_configure(sc, &sc->sc_gpio_pins[i], flags);

	return (0);
}

Example #2

File: rk30xx_gpio.c Project: coyizumi/cs111

int
rk30_gpios_prop_handle(phandle_t ctrl, pcell_t *gpios, int len)
{
	struct rk30_gpio_softc *sc;
	pcell_t gpio_cells;
	int inc, t, tuples, tuple_size;
	int dir, flags, pin, i;
	u_long gpio_ctrl, size;

	sc = rk30_gpio_sc;
	if (sc == NULL)
		return ENXIO;

	if (OF_getprop(ctrl, "#gpio-cells", &gpio_cells, sizeof(pcell_t)) < 0)
		return (ENXIO);

	gpio_cells = fdt32_to_cpu(gpio_cells);
	if (gpio_cells != 2)
		return (ENXIO);

	tuple_size = gpio_cells * sizeof(pcell_t) + sizeof(phandle_t);
	tuples = len / tuple_size;

	if (fdt_regsize(ctrl, &gpio_ctrl, &size))
		return (ENXIO);

	/*
	 * Skip controller reference, since controller's phandle is given
	 * explicitly (in a function argument).
	 */
	inc = sizeof(ihandle_t) / sizeof(pcell_t);
	gpios += inc;
	for (t = 0; t < tuples; t++) {
		pin = fdt32_to_cpu(gpios[0]);
		dir = fdt32_to_cpu(gpios[1]);
		flags = fdt32_to_cpu(gpios[2]);

		for (i = 0; i < sc->sc_gpio_npins; i++) {
			if (sc->sc_gpio_pins[i].gp_pin == pin)
				break;
		}
		if (i >= sc->sc_gpio_npins)
			return (EINVAL);

		rk30_gpio_pin_configure(sc, &sc->sc_gpio_pins[i], flags);

		if (dir == 1) {
			/* Input. */
			rk30_gpio_pin_set(sc->sc_dev, pin, RK30_GPIO_INPUT);
		} else {
			/* Output. */
			rk30_gpio_pin_set(sc->sc_dev, pin, RK30_GPIO_OUTPUT);
		}
		gpios += gpio_cells + inc;
	}

	return (0);
}

Example #3

File: rk30xx_gpio.c Project: coyizumi/cs111

static int
rk30_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
{
	struct rk30_gpio_softc *sc = device_get_softc(dev);
	int i;

	for (i = 0; i < sc->sc_gpio_npins; i++) {
		if (sc->sc_gpio_pins[i].gp_pin == pin)
			break;
	}

	if (i >= sc->sc_gpio_npins)
		return (EINVAL);

	rk30_gpio_pin_configure(sc, &sc->sc_gpio_pins[i], flags);

	return (0);
}