ARM: 6373/1: tc35892-gpio: add setup/remove callbacks

For board-specific initialization.

Cc: Samuel Ortiz <[e-mail]>
Cc: [e-mail]
Acked-by: Linus Walleij <[e-mail]>
Signed-off-by: Rabin Vincent <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

drivers/gpio/tc35892-gpio.c

···
 		goto out_freeirq;
 	}
 
+	if (pdata->setup)
+		pdata->setup(tc35892, tc35892_gpio->chip.base);
+
 	platform_set_drvdata(pdev, tc35892_gpio);
 
 	return 0;
···
 static int __devexit tc35892_gpio_remove(struct platform_device *pdev)
 {
 	struct tc35892_gpio *tc35892_gpio = platform_get_drvdata(pdev);
+	struct tc35892 *tc35892 = tc35892_gpio->tc35892;
+	struct tc35892_gpio_platform_data *pdata = tc35892->pdata->gpio;
 	int irq = platform_get_irq(pdev, 0);
 	int ret;
+
+	if (pdata->remove)
+		pdata->remove(tc35892, tc35892_gpio->chip.base);
 
 	ret = gpiochip_remove(&tc35892_gpio->chip);
 	if (ret < 0) {

include/linux/mfd/tc35892.h

···
  * struct tc35892_gpio_platform_data - TC35892 GPIO platform data
  * @gpio_base: first gpio number assigned to TC35892.  A maximum of
  *	       %TC35892_NR_GPIOS GPIOs will be allocated.
+ * @setup: callback for board-specific initialization
+ * @remove: callback for board-specific teardown
  */
 struct tc35892_gpio_platform_data {
 	int gpio_base;
+	void (*setup)(struct tc35892 *tc35892, unsigned gpio_base);
+	void (*remove)(struct tc35892 *tc35892, unsigned gpio_base);
 };
 
 /**