diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-03-10 03:27:00 +0100 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-04-03 03:30:34 +0200 |
| commit | dc3465a943ed2dd5de37d3d60df5c4e11c49efcb (patch) | |
| tree | 0bf7fb5de9925ae8b69905c77418f991046f71a8 | |
| parent | gpio: Renesas R-Car GPIO driver V3 (diff) | |
| download | linux-dc3465a943ed2dd5de37d3d60df5c4e11c49efcb.tar.xz linux-dc3465a943ed2dd5de37d3d60df5c4e11c49efcb.zip | |
gpio-rcar: Add pinctrl support
Register the GPIO pin range, and request and free GPIO pins using the
pinctrl API.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 23 | ||||
| -rw-r--r-- | include/linux/platform_data/gpio-rcar.h | 1 |
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 581ba56131a7..b4ca450947b8 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -22,6 +22,7 @@ #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/module.h> +#include <linux/pinctrl/consumer.h> #include <linux/platform_data/gpio-rcar.h> #include <linux/platform_device.h> #include <linux/spinlock.h> @@ -190,6 +191,21 @@ static void gpio_rcar_config_general_input_output_mode(struct gpio_chip *chip, spin_unlock_irqrestore(&p->lock, flags); } +static int gpio_rcar_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void gpio_rcar_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); + + /* Set the GPIO as an input to ensure that the next GPIO request won't + * drive the GPIO pin as an output. + */ + gpio_rcar_config_general_input_output_mode(chip, offset, false); +} + static int gpio_rcar_direction_input(struct gpio_chip *chip, unsigned offset) { gpio_rcar_config_general_input_output_mode(chip, offset, false); @@ -285,6 +301,8 @@ static int gpio_rcar_probe(struct platform_device *pdev) } gpio_chip = &p->gpio_chip; + gpio_chip->request = gpio_rcar_request; + gpio_chip->free = gpio_rcar_free; gpio_chip->direction_input = gpio_rcar_direction_input; gpio_chip->get = gpio_rcar_get; gpio_chip->direction_output = gpio_rcar_direction_output; @@ -337,6 +355,11 @@ static int gpio_rcar_probe(struct platform_device *pdev) p->config.irq_base, ret); } + ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0, + gpio_chip->base, gpio_chip->ngpio); + if (ret < 0) + dev_warn(&pdev->dev, "failed to add pin range\n"); + return 0; err1: diff --git a/include/linux/platform_data/gpio-rcar.h b/include/linux/platform_data/gpio-rcar.h index bebfcd86fb80..b253f77a7ddf 100644 --- a/include/linux/platform_data/gpio-rcar.h +++ b/include/linux/platform_data/gpio-rcar.h @@ -20,6 +20,7 @@ struct gpio_rcar_config { unsigned int gpio_base; unsigned int irq_base; unsigned int number_of_pins; + const char *pctl_name; }; #endif /* __GPIO_RCAR_H__ */ |