diff options
| author | Haojian Zhuang <haojian.zhuang@linaro.org> | 2013-02-17 15:42:51 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-03-07 08:27:30 +0400 |
| commit | 39b70ee05199f9bea50641df104aee4dbd913d1d (patch) | |
| tree | c72950eecf18b62a3bd5af13fdd8ceadfdad1ade | |
| parent | 51e13c2475913d45a3ec546dee647538a9341d6a (diff) | |
| download | linux-39b70ee05199f9bea50641df104aee4dbd913d1d.tar.xz | |
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.c | 13 |
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; |