[PATCH] gpio: pl061: add DT binding support

From: Rob Herring <redacted>

This adds devicetree binding support to the ARM pl061 driver removing the
platform_data dependency. When DT binding is used, the gpio numbering is
assigned dynamically. The interrupt assignment is converted to use the
irq_domain infrastructure.

Signed-off-by: Rob Herring <redacted>
Cc: Grant Likely <redacted>
---
?drivers/gpio/gpio-pl061.c | ? 32 +++++++++++++++++++++++---------
?1 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 2c5a18f..7ea74ff 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c

@@ -23,6 +23,7 @@

?#include <linux/amba/bus.h>
?#include <linux/amba/pl061.h>
?#include <linux/slab.h>
+#include <linux/of_irq.h>

?#define GPIODIR 0x400
?#define GPIOIS ?0x404

@@ -246,6 +247,20 @@ 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) {
+ ? ? ? ? ? ? ? u32 intspec = 0;
+ ? ? ? ? ? ? ? chip->gc.base = -1;
+ ? ? ? ? ? ? ? chip->irq_base = irq_create_of_mapping(dev->dev.of_node,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?&intspec, 1);