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authorHaojian Zhuang <haojian.zhuang@linaro.org>2013-02-17 19:42:51 +0800
committerLinus Walleij <linus.walleij@linaro.org>2013-03-07 05:27:30 +0100
commit39b70ee05199f9bea50641df104aee4dbd913d1d (patch)
treec72950eecf18b62a3bd5af13fdd8ceadfdad1ade
parent51e13c2475913d45a3ec546dee647538a9341d6a (diff)
gpio: pl061: bind pinctrl by gpio request
Add the pl061_gpio_request() to request pinctrl. Create the logic between pl061 gpio driver and pinctrl (pinctrl-single) driver. While a gpio pin is requested, it will request pinctrl driver to set that pin with gpio function mode. So pinctrl driver should append .gpio_request_enable() in pinmux_ops. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-pl061.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index d1d603585a93..06ed257c5d31 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/pinctrl/consumer.h>
#include <linux/pm.h>
#include <asm/mach/irq.h>
@@ -60,6 +61,17 @@ struct pl061_gpio {
#endif
};
+static int pl061_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ /*
+ * Map back to global GPIO space and request muxing, the direction
+ * parameter does not matter for this controller.
+ */
+ int gpio = chip->base + offset;
+
+ return pinctrl_request_gpio(gpio);
+}
+
static int pl061_direction_input(struct gpio_chip *gc, unsigned offset)
{
struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
@@ -274,6 +286,7 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
spin_lock_init(&chip->lock);
+ chip->gc.request = pl061_gpio_request;
chip->gc.direction_input = pl061_direction_input;
chip->gc.direction_output = pl061_direction_output;
chip->gc.get = pl061_get_value;