msm: trout: add gpio_to_irq

trout has gpiolib support and interrupt support, but was
missing the gpio_to_irq function. This adds that functions
which should allow proper translation.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mach-msm/board-trout-gpio.c b/arch/arm/mach-msm/board-trout-gpio.c
index c50f3afc3134..f8c09ef6666f 100644
--- a/arch/arm/mach-msm/board-trout-gpio.c
+++ b/arch/arm/mach-msm/board-trout-gpio.c
@@ -72,6 +72,13 @@ static int msm_gpiolib_direction_output(struct gpio_chip *chip,
         return 0;
 }
 
+static int trout_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+        struct msm_gpio_chip *msm_gpio = to_msm_gpio_chip(chip);
+
+        return TROUT_GPIO_TO_INT(offset + chip->base);
+}
+
 #define TROUT_GPIO_BANK(name, reg_num, base_gpio, shadow_val)           \
         {                                                               \
                 .chip = {                                               \
@@ -80,6 +87,7 @@ static int msm_gpiolib_direction_output(struct gpio_chip *chip,
                         .direction_output = msm_gpiolib_direction_output, \
                         .get              = msm_gpiolib_get,            \
                         .set              = msm_gpiolib_set,            \
+                        .to_irq           = trout_gpio_to_irq,          \
                         .base             = base_gpio,                  \
                         .ngpio            = 8,                          \
                 },                                                      \