Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs...

[pandora-kernel.git] / drivers / gpio / gpio-ep93xx.c

diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 72fb9c6..7aafbb4 100644 (file)
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -23,6 +23,9 @@
 #include <linux/basic_mmio_gpio.h>
 
 #include <mach/hardware.h>
+#include <mach/gpio-ep93xx.h>
+
+#define irq_to_gpio(irq)       ((irq) - gpio_to_irq(0))
 
 struct ep93xx_gpio {
        void __iomem            *mmio_base;
@@ -307,6 +310,21 @@ static int ep93xx_gpio_set_debounce(struct gpio_chip *chip,
        return 0;
 }
 
+/*
+ * Map GPIO A0..A7  (0..7)  to irq 64..71,
+ *          B0..B7  (7..15) to irq 72..79, and
+ *          F0..F7 (16..24) to irq 80..87.
+ */
+static int ep93xx_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+       int gpio = chip->base + offset;
+
+       if (gpio > EP93XX_GPIO_LINE_MAX_IRQ)
+               return -EINVAL;
+
+       return 64 + gpio;
+}
+
 static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev,
        void __iomem *mmio_base, struct ep93xx_gpio_bank *bank)
 {
@@ -321,8 +339,10 @@ static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev,
        bgc->gc.label = bank->label;
        bgc->gc.base = bank->base;
 
-       if (bank->has_debounce)
+       if (bank->has_debounce) {
                bgc->gc.set_debounce = ep93xx_gpio_set_debounce;
+               bgc->gc.to_irq = ep93xx_gpio_to_irq;
+       }
 
        return gpiochip_add(&bgc->gc);
 }