broadcom/bcm2835/bcm2835_gpio.c

71 	uint32_t		pin;
112 bcm_gpio_pin_is_ro(struct bcm_gpio_softc *sc, int pin)
117 		if (pin == sc->sc_ro_pins[i])
123 bcm_gpio_get_function(struct bcm_gpio_softc *sc, uint32_t pin)
127 	/* Five banks, 10 pins per bank, 3 bits per pin. */
128 	bank = pin / 10;
129 	offset = (pin - bank * 10) * 3;
212 bcm_gpio_set_function(struct bcm_gpio_softc *sc, uint32_t pin, uint32_t f)
219 	/* Five banks, 10 pins per bank, 3 bits per pin. */
220 	bank = pin / 10;
221 	offset = (pin - bank * 10) * 3;
230 bcm_gpio_set_pud(struct bcm_gpio_softc *sc, uint32_t pin, uint32_t state)
237 	bank = pin / 32;
238 	offset = pin - 32 * bank;
249 bcm_gpio_set_alternate(device_t dev, uint32_t pin, uint32_t nfunc)
257 	/* Disable pull-up or pull-down on pin. */
258 	bcm_gpio_set_pud(sc, pin, BCM_GPIO_NONE);
260 	/* And now set the pin function. */
261 	bcm_gpio_set_function(sc, pin, nfunc);
263 	/* Update the pin flags. */
265 		if (sc->sc_gpio_pins[i].gp_pin == pin)
275 bcm_gpio_pin_configure(struct bcm_gpio_softc *sc, struct gpio_pin *pin,
285 		pin->gp_flags &= ~(GPIO_PIN_INPUT|GPIO_PIN_OUTPUT);
287 			pin->gp_flags |= GPIO_PIN_OUTPUT;
288 			bcm_gpio_set_function(sc, pin->gp_pin,
291 			pin->gp_flags |= GPIO_PIN_INPUT;
292 			bcm_gpio_set_function(sc, pin->gp_pin,
298 	pin->gp_flags &= ~(GPIO_PIN_PULLUP|GPIO_PIN_PULLDOWN);
301 			pin->gp_flags |= GPIO_PIN_PULLUP;
302 			bcm_gpio_set_pud(sc, pin->gp_pin, BCM_GPIO_PULLUP);
304 			pin->gp_flags |= GPIO_PIN_PULLDOWN;
305 			bcm_gpio_set_pud(sc, pin->gp_pin, BCM_GPIO_PULLDOWN);
308 		bcm_gpio_set_pud(sc, pin->gp_pin, BCM_GPIO_NONE);
322 bcm_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
328 		if (sc->sc_gpio_pins[i].gp_pin == pin)
343 bcm_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
349 		if (sc->sc_gpio_pins[i].gp_pin == pin)
364 bcm_gpio_pin_getname(device_t dev, uint32_t pin, char *name)
370 		if (sc->sc_gpio_pins[i].gp_pin == pin)
385 bcm_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
391 		if (sc->sc_gpio_pins[i].gp_pin == pin)
399 	if (bcm_gpio_pin_is_ro(sc, pin))
408 bcm_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
415 		if (sc->sc_gpio_pins[i].gp_pin == pin)
423 	if (bcm_gpio_pin_is_ro(sc, pin))
426 	bank = pin / 32;
427 	offset = pin - 32 * bank;
440 bcm_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
447 		if (sc->sc_gpio_pins[i].gp_pin == pin)
454 	bank = pin / 32;
455 	offset = pin - 32 * bank;
466 bcm_gpio_pin_toggle(device_t dev, uint32_t pin)
473 		if (sc->sc_gpio_pins[i].gp_pin == pin)
481 	if (bcm_gpio_pin_is_ro(sc, pin))
484 	bank = pin / 32;
485 	offset = pin - 32 * bank;
543 	/* Get the current pin function. */
544 	nfunc = bcm_gpio_get_function(sc, sc_sysctl->pin);
551 	/* Parse the user supplied string and check for a valid pin function. */
555 	/* Update the pin alternate function. */
556 	bcm_gpio_set_alternate(sc->sc_dev, sc_sysctl->pin, nfunc);
572 	 * Add per-pin sysctl tree/handlers.
577 	pin_node = SYSCTL_ADD_NODE(ctx, tree, OID_AUTO, "pin",
591 		sc_sysctl->pin = sc->sc_gpio_pins[i].gp_pin;
725 		    "pin %d", j);