pinctrl: nomadik: mark GPIO lines used for IRQ

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.

Cc: Enric Balletbo i Serra <eballetbo@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index d7c3ae300fa7..7111c3b59130 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -634,6 +634,10 @@ static unsigned int nmk_gpio_irq_startup(struct irq_data *d)
 {
         struct nmk_gpio_chip *nmk_chip = irq_data_get_irq_chip_data(d);
 
+        if (gpio_lock_as_irq(&nmk_chip->chip, d->hwirq))
+                dev_err(nmk_chip->chip.dev,
+                        "unable to lock HW IRQ %lu for IRQ\n",
+                        d->hwirq);
         clk_enable(nmk_chip->clk);
         nmk_gpio_irq_unmask(d);
         return 0;
@@ -645,6 +649,7 @@ static void nmk_gpio_irq_shutdown(struct irq_data *d)
 
         nmk_gpio_irq_mask(d);
         clk_disable(nmk_chip->clk);
+        gpio_unlock_as_irq(&nmk_chip->chip, d->hwirq);
 }
 
 static struct irq_chip nmk_gpio_irq_chip = {