gpio: tz1090: 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().

Cc: James Hogan <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-tz1090.c

···
 	int irq;
 	char label[16];
 };
-#define to_bank(c)	container_of(c, struct tz1090_gpio_bank, chip)
 
 /**
  * struct tz1090_gpio - Overall GPIO device private data
···
 static int tz1090_gpio_direction_input(struct gpio_chip *chip,
 				       unsigned int offset)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 	tz1090_gpio_set_bit(bank, REG_GPIO_DIR, offset);
 
 	return 0;
···
 static int tz1090_gpio_direction_output(struct gpio_chip *chip,
 					unsigned int offset, int output_value)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 	int lstat;
 
 	__global_lock2(lstat);
···
  */
 static int tz1090_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 
 	return !!tz1090_gpio_read_bit(bank, REG_GPIO_DIN, offset);
 }
···
 static void tz1090_gpio_set(struct gpio_chip *chip, unsigned int offset,
 			    int output_value)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 
 	tz1090_gpio_mod_bit(bank, REG_GPIO_DOUT, offset, output_value);
 }
 
 static int tz1090_gpio_request(struct gpio_chip *chip, unsigned int offset)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 	int ret;
 
 	ret = pinctrl_request_gpio(chip->base + offset);
···
 
 static void tz1090_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 
 	pinctrl_free_gpio(chip->base + offset);
 
···
 
 static int tz1090_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
 {
-	struct tz1090_gpio_bank *bank = to_bank(chip);
+	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 
 	if (!bank->domain)
 		return -EINVAL;
···
 	bank->chip.ngpio		= 30;
 
 	/* Add the GPIO bank */
-	gpiochip_add(&bank->chip);
+	gpiochip_add_data(&bank->chip, bank);
 
 	/* Get the GPIO bank IRQ if provided */
 	bank->irq = irq_of_parse_and_map(np, 0);