Input: adp5589-keys - remove setup/teardown hooks for gpios

This is currently just dead code. It's from around a time when
platform-data was used, and a board could hook it's own special callback
for setup/teardown, and a private object (via 'context').

This change removes it, as there are no more users in mainline for this.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201112074308.71351-4-alexandru.ardelean@analog.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/adp5589-keys.c

@@ -539,35 +539,14 @@ static int adp5589_gpio_add(struct adp5589_kpad *kpad)
 					    ADP5589_GPIO_DIRECTION_A) + i);
 	}
 
-	if (gpio_data->setup) {
-		error = gpio_data->setup(kpad->client,
-					 kpad->gc.base, kpad->gc.ngpio,
-					 gpio_data->context);
-		if (error)
-			dev_warn(dev, "setup failed, %d\n", error);
-	}
-
 	return 0;
 }
 
 static void adp5589_gpio_remove(struct adp5589_kpad *kpad)
 {
-	struct device *dev = &kpad->client->dev;
-	const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
-	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
-	int error;
-
 	if (!kpad->export_gpio)
 		return;
 
-	if (gpio_data->teardown) {
-		error = gpio_data->teardown(kpad->client,
-					    kpad->gc.base, kpad->gc.ngpio,
-					    gpio_data->context);
-		if (error)
-			dev_warn(dev, "teardown failed %d\n", error);
-	}
-
 	gpiochip_remove(&kpad->gc);
 }
 #else

include/linux/input/adp5589.h

@@ -175,13 +175,6 @@ struct i2c_client; /* forward declaration */
 
 struct adp5589_gpio_platform_data {
 	int	gpio_start;	/* GPIO Chip base # */
-	int	(*setup)(struct i2c_client *client,
-				int gpio, unsigned ngpio,
-				void *context);
-	int	(*teardown)(struct i2c_client *client,
-				int gpio, unsigned ngpio,
-				void *context);
-	void	*context;
 };
 
 #endif