bcma: add gpio_to_irq

The old bcm47xx gpio code had support for gpio_to_irq, but the new
code did not provide this function, but returned -ENXIO all the time.
This patch adds the missing function.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/bcma/driver_gpio.c b/drivers/bcma/driver_gpio.c
index 9a6f585da2d9..0b5df538dfd9 100644
--- a/drivers/bcma/driver_gpio.c
+++ b/drivers/bcma/driver_gpio.c
@@ -73,6 +73,16 @@ static void bcma_gpio_free(struct gpio_chip *chip, unsigned gpio)
         bcma_chipco_gpio_pullup(cc, 1 << gpio, 0);
 }
 
+static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+{
+        struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip);
+
+        if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
+                return bcma_core_irq(cc->core);
+        else
+                return -EINVAL;
+}
+
 int bcma_gpio_init(struct bcma_drv_cc *cc)
 {
         struct gpio_chip *chip = &cc->gpio;
@@ -85,6 +95,7 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
         chip->set               = bcma_gpio_set_value;
         chip->direction_input   = bcma_gpio_direction_input;
         chip->direction_output  = bcma_gpio_direction_output;
+        chip->to_irq            = bcma_gpio_to_irq;
         chip->ngpio             = 16;
         /* There is just one SoC in one device and its GPIO addresses should be
          * deterministic to address them more easily. The other buses could get