gpiolib: Implement gpio_to_irq for WM8994 GPIO controller
Mark Brown [Fri, 2 Apr 2010 13:51:59 +0000 (14:51 +0100)]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/gpio/wm8994-gpio.c

index de28b4a..3ee35ba 100644 (file)
@@ -80,6 +80,18 @@ static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
        wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, WM8994_GPN_LVL, value);
 }
 
+static int wm8994_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+       struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip);
+       struct wm8994 *wm8994 = wm8994_gpio->wm8994;
+
+       if (!wm8994->irq_base)
+               return -EINVAL;
+
+       return wm8994->irq_base + offset;
+}
+
+
 #ifdef CONFIG_DEBUG_FS
 static void wm8994_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {