gpio: ath79: use gpiochip data pointer

This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Acked-by: Alban Bedel <albeu@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index 6e67812..d13dd13 100644 (file)
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -24,12 +24,10 @@ struct ath79_gpio_ctrl {
        spinlock_t lock;
 };
 
-#define to_ath79_gpio_ctrl(c) container_of(c, struct ath79_gpio_ctrl, chip)
-
 static void ath79_gpio_set_value(struct gpio_chip *chip,
                                unsigned gpio, int value)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
 
        if (value)
                __raw_writel(BIT(gpio), ctrl->base + AR71XX_GPIO_REG_SET);
@@ -39,7 +37,7 @@ static void ath79_gpio_set_value(struct gpio_chip *chip,
 
 static int ath79_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
 
        return (__raw_readl(ctrl->base + AR71XX_GPIO_REG_IN) >> gpio) & 1;
 }
@@ -47,7 +45,7 @@ static int ath79_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
 static int ath79_gpio_direction_input(struct gpio_chip *chip,
                                       unsigned offset)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
        unsigned long flags;
 
        spin_lock_irqsave(&ctrl->lock, flags);
@@ -64,7 +62,7 @@ static int ath79_gpio_direction_input(struct gpio_chip *chip,
 static int ath79_gpio_direction_output(struct gpio_chip *chip,
                                        unsigned offset, int value)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
        unsigned long flags;
 
        spin_lock_irqsave(&ctrl->lock, flags);
@@ -85,7 +83,7 @@ static int ath79_gpio_direction_output(struct gpio_chip *chip,
 
 static int ar934x_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
        unsigned long flags;
 
        spin_lock_irqsave(&ctrl->lock, flags);
@@ -102,7 +100,7 @@ static int ar934x_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
                                        int value)
 {
-       struct ath79_gpio_ctrl *ctrl = to_ath79_gpio_ctrl(chip);
+       struct ath79_gpio_ctrl *ctrl = gpiochip_get_data(chip);
        unsigned long flags;
 
        spin_lock_irqsave(&ctrl->lock, flags);
@@ -184,7 +182,7 @@ static int ath79_gpio_probe(struct platform_device *pdev)
                ctrl->chip.direction_output = ar934x_gpio_direction_output;
        }
 
-       err = gpiochip_add(&ctrl->chip);
+       err = gpiochip_add_data(&ctrl->chip, ctrl);
        if (err) {
                dev_err(&pdev->dev,
                        "cannot add AR71xx GPIO chip, error=%d", err);