Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6

* 'gpio/next' of git://git.secretlab.ca/git/linux-2.6:
  h8300: Move gpio.h to gpio-internal.h
  gpio: pl061: add DT binding support
  gpio: fix build error in include/asm-generic/gpio.h
  gpiolib: Ensure struct gpio is always defined
  irq: Add EXPORT_SYMBOL_GPL to function of irq generic-chip
  gpio-ml-ioh: Use NUMA_NO_NODE not GFP_KERNEL
  gpio-pch: Use NUMA_NO_NODE not GFP_KERNEL
  gpio: langwell: ensure alternate function is cleared
  gpio-pch: Support interrupt function
  gpio-pch: Save register value in suspend()
  gpio-pch: modify gpio_nums and mask
  gpio-pch: support ML7223 IOH n-Bus
  gpio-pch: add spinlock in suspend/resume processing
  gpio-pch: Delete invalid "restore" code in suspend()
  gpio-ml-ioh: Fix suspend/resume issue
  gpio-ml-ioh: Support interrupt function
  gpio-ml-ioh: Delete unnecessary code
  gpio/mxc: add chained_irq_enter/exit() to mx3_gpio_irq_handler()
  gpio/nomadik: use genirq core to track enablement
  gpio/nomadik: disable clocks when unused

1 files changed, 21 insertions, 10 deletions

diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 2c5a18f32bf3..093c90bd3c1d 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -118,7 +118,7 @@ static int pl061_to_irq(struct gpio_chip *gc, unsigned offset)
 {
 	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
 
-	if (chip->irq_base == (unsigned) -1)
+	if (chip->irq_base == NO_IRQ)
 		return -EINVAL;
 
 	return chip->irq_base + offset;
@@ -246,6 +246,18 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 	if (chip == NULL)
 		return -ENOMEM;
 
+	pdata = dev->dev.platform_data;
+	if (pdata) {
+		chip->gc.base = pdata->gpio_base;
+		chip->irq_base = pdata->irq_base;
+	} else if (dev->dev.of_node) {
+		chip->gc.base = -1;
+		chip->irq_base = NO_IRQ;
+	} else {
+		ret = -ENODEV;
+		goto free_mem;
+	}
+
 	if (!request_mem_region(dev->res.start,
 				resource_size(&dev->res), "pl061")) {
 		ret = -EBUSY;
@@ -267,14 +279,11 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 	chip->gc.get = pl061_get_value;
 	chip->gc.set = pl061_set_value;
 	chip->gc.to_irq = pl061_to_irq;
-	chip->gc.base = pdata->gpio_base;
 	chip->gc.ngpio = PL061_GPIO_NR;
 	chip->gc.label = dev_name(&dev->dev);
 	chip->gc.dev = &dev->dev;
 	chip->gc.owner = THIS_MODULE;
 
-	chip->irq_base = pdata->irq_base;
-
 	ret = gpiochip_add(&chip->gc);
 	if (ret)
 		goto iounmap;
@@ -283,7 +292,7 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 	 * irq_chip support
 	 */
 
-	if (chip->irq_base == (unsigned) -1)
+	if (chip->irq_base == NO_IRQ)
 		return 0;
 
 	writeb(0, chip->base + GPIOIE); /* disable irqs */
@@ -307,11 +316,13 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 	list_add(&chip->list, chip_list);
 
 	for (i = 0; i < PL061_GPIO_NR; i++) {
-		if (pdata->directions & (1 << i))
-			pl061_direction_output(&chip->gc, i,
-					pdata->values & (1 << i));
-		else
-			pl061_direction_input(&chip->gc, i);
+		if (pdata) {
+			if (pdata->directions & (1 << i))
+				pl061_direction_output(&chip->gc, i,
+						pdata->values & (1 << i));
+			else
+				pl061_direction_input(&chip->gc, i);
+		}
 
 		irq_set_chip_and_handler(i + chip->irq_base, &pl061_irqchip,
 					 handle_simple_irq);