diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 581ba56131a7bf7f8ce9f874389e989ee1dcaed3..b4ca450947b8f4b8f041c35ddfb9e21dde797487 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -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 bebfcd86fb80a5eccb522c1a9fe0f4935642ce01..b253f77a7ddf6ba4db532cdbeeae43cf7b1e16df 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__ */