Changeset View

Standalone View

Show First 20 Lines • Show All 137 Lines • ▼ Show 20 Lines	gpio_check_flags(uint32_t caps, uint32_t flags)
flags &= caps;		flags &= caps;

/* Cannot mix input/output together. */		/* Cannot mix input/output together. */
if (flags & GPIO_PIN_INPUT && flags & GPIO_PIN_OUTPUT)		if (flags & GPIO_PIN_INPUT && flags & GPIO_PIN_OUTPUT)
return (EINVAL);		return (EINVAL);
/* Cannot mix pull-up/pull-down together. */		/* Cannot mix pull-up/pull-down together. */
if (flags & GPIO_PIN_PULLUP && flags & GPIO_PIN_PULLDOWN)		if (flags & GPIO_PIN_PULLUP && flags & GPIO_PIN_PULLDOWN)
return (EINVAL);		return (EINVAL);
		/* Cannot mix output and interrupt flags together */
		if (flags & GPIO_PIN_OUTPUT && flags & GPIO_INTR_MASK)
		return (EINVAL);
		/* Only one interrupt flag can be defined at once */
		if ((flags & GPIO_INTR_MASK) & ((flags & GPIO_INTR_MASK) - 1))
		return (EINVAL);
		/* The interrupt attached flag cannot be set */
		if (flags & GPIO_INTR_ATTACHED)
		return (EINVAL);

return (0);		return (0);
}		}

int		int
gpio_pin_get_by_bus_pinnum(device_t busdev, uint32_t pinnum, gpio_pin_t *ppin)		gpio_pin_get_by_bus_pinnum(device_t busdev, uint32_t pinnum, gpio_pin_t *ppin)
{		{
gpio_pin_t pin;		gpio_pin_t pin;
▲ Show 20 Lines • Show All 980 Lines • Show Last 20 Lines