pinctrl: rockchip: 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: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-rockchip.c

@@ -224,11 +224,6 @@ static struct regmap_config rockchip_regmap_config = {
 	.reg_stride = 4,
 };
 
-static inline struct rockchip_pin_bank *gc_to_pin_bank(struct gpio_chip *gc)
-{
-	return container_of(gc, struct rockchip_pin_bank, gpio_chip);
-}
-
 static const inline struct rockchip_pin_group *pinctrl_name_to_group(
 					const struct rockchip_pinctrl *info,
 					const char *name)
@@ -939,7 +934,7 @@ static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
 	unsigned long flags;
 	u32 data;
 
-	bank = gc_to_pin_bank(chip);
+	bank = gpiochip_get_data(chip);
 
 	ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO);
 	if (ret < 0)
@@ -1376,7 +1371,7 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
 
 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
 {
-	struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
+	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
 	void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
 	unsigned long flags;
 	u32 data;
@@ -1400,7 +1395,7 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
  */
 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
 {
-	struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
+	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
 	u32 data;
 
 	clk_enable(bank->clk);
@@ -1439,7 +1434,7 @@ static int rockchip_gpio_direction_output(struct gpio_chip *gc,
  */
 static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
 {
-	struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
+	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
 	unsigned int virq;
 
 	if (!bank->domain)
@@ -1758,7 +1753,7 @@ static int rockchip_gpiolib_register(struct platform_device *pdev,
 		gc->of_node = bank->of_node;
 		gc->label = bank->name;
 
-		ret = gpiochip_add(gc);
+		ret = gpiochip_add_data(gc, bank);
 		if (ret) {
 			dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
 							gc->label, ret);