Commit d941136f authored Mar 19, 2012 by Stephen Warren

gpio: tegra: configure pins during irq_set_type



When a Tegra GPIO is used as an IRQ, it should be enabled as a GPIO (so
the pinmux module isn't driving it as an output) and configured as a GPIO
input (so the GPIO module isn't driving it as an output). Set this up
automatically whenever an IRQ is requested, so that users of IRQs don't
need to do this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>

parent 4bee6417

drivers/gpio/gpio-tegra.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -224,6 +224,9 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)

		spin_unlock_irqrestore(&bank->lvl_lock[port], flags);

		tegra_gpio_mask_write(GPIO_MSK_OE(gpio), gpio, 0);
		tegra_gpio_enable(gpio);

		if (type & (IRQ_TYPE_LEVEL_LOW \| IRQ_TYPE_LEVEL_HIGH))
		__irq_set_handler_locked(d->irq, handle_level_irq);
		else if (type & (IRQ_TYPE_EDGE_FALLING \| IRQ_TYPE_EDGE_RISING))