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pinctrl: coh901: mark GPIO lines used for IRQ

Message ID 1381739224-5439-1-git-send-email-linus.walleij@linaro.org
State Accepted
Commit 873ee9ed2c020b59e22a5082f73fc2960ec959bf
Headers show

Commit Message

Linus Walleij Oct. 14, 2013, 8:27 a.m. UTC
When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 drivers/pinctrl/pinctrl-coh901.c | 5 +++++
 1 file changed, 5 insertions(+)
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diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index f22a219..162ac0d 100644
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -529,6 +529,10 @@  static void u300_gpio_irq_enable(struct irq_data *d)
 	dev_dbg(gpio->dev, "enable IRQ for hwirq %lu on port %s, offset %d\n",
 		 d->hwirq, port->name, offset);
+	if (gpio_lock_as_irq(&gpio->chip, d->hwirq))
+		dev_err(gpio->dev,
+			"unable to lock HW IRQ %lu for IRQ\n",
+			d->hwirq);
 	val = readl(U300_PIN_REG(offset, ien));
 	writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, ien));
@@ -547,6 +551,7 @@  static void u300_gpio_irq_disable(struct irq_data *d)
 	val = readl(U300_PIN_REG(offset, ien));
 	writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, ien));
+	gpio_unlock_as_irq(&gpio->chip, d->hwirq);
 static struct irq_chip u300_gpio_irqchip = {