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path: root/drivers/gpio/gpio-mxc.c
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Diffstat (limited to 'drivers/gpio/gpio-mxc.c')
-rw-r--r--drivers/gpio/gpio-mxc.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index addbea09aece..e79147634573 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -33,6 +33,8 @@
#include <asm-generic/bug.h>
#include <asm/mach/irq.h>
+#define irq_to_gpio(irq) ((irq) - MXC_GPIO_IRQ_START)
+
enum mxc_gpio_hwtype {
IMX1_GPIO, /* runs on i.mx1 */
IMX21_GPIO, /* runs on i.mx21 and i.mx27 */
@@ -344,6 +346,15 @@ static void __devinit mxc_gpio_get_hw(struct platform_device *pdev)
mxc_gpio_hwtype = hwtype;
}
+static int mxc_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
+{
+ struct bgpio_chip *bgc = to_bgpio_chip(gc);
+ struct mxc_gpio_port *port =
+ container_of(bgc, struct mxc_gpio_port, bgc);
+
+ return port->virtual_irq_start + offset;
+}
+
static int __devinit mxc_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -410,6 +421,7 @@ static int __devinit mxc_gpio_probe(struct platform_device *pdev)
if (err)
goto out_iounmap;
+ port->bgc.gc.to_irq = mxc_gpio_to_irq;
port->bgc.gc.base = pdev->id * 32;
port->bgc.dir = port->bgc.read_reg(port->bgc.reg_dir);
port->bgc.data = port->bgc.read_reg(port->bgc.reg_set);