Revert "[media] Add device tree support to adp1653 flash driver"

As requested by Sakari:

	"The driver changes are still being reviewed.
	 It's been proposed that the max-microamp property be renamed."

So, as the DT bindings are not agreed upstream yet, let's revert
it.

Requested-by: Sakari Ailus <sakari.ailus@iki.fi>
This reverts commit b6100f1.

drivers/media/i2c/adp1653.c

@@ -8,7 +8,6 @@
  * Contributors:
  *	Sakari Ailus <sakari.ailus@iki.fi>
  *	Tuukka Toivonen <tuukkat76@gmail.com>
- *	Pavel Machek <pavel@ucw.cz>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -35,8 +34,6 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
-#include <linux/of_gpio.h>
-#include <linux/gpio.h>
 #include <media/adp1653.h>
 #include <media/v4l2-device.h>
 
@@ -309,31 +306,18 @@ adp1653_init_device(struct adp1653_flash *flash)
 static int
 __adp1653_set_power(struct adp1653_flash *flash, int on)
 {
-	int ret = 0;
-
-	if (flash->platform_data->power) {
-		ret = flash->platform_data->power(&flash->subdev, on);
-	} else {
-		gpio_set_value(flash->platform_data->power_gpio, on);
-		if (on)
-			/* Some delay is apparently required. */
-			udelay(20);
-	}
+	int ret;
 
+	ret = flash->platform_data->power(&flash->subdev, on);
 	if (ret < 0)
 		return ret;
 
 	if (!on)
 		return 0;
 
 	ret = adp1653_init_device(flash);
-	if (ret >= 0)
-		return ret;
-
-	if (flash->platform_data->power)
+	if (ret < 0)
 		flash->platform_data->power(&flash->subdev, 0);
-	else
-		gpio_set_value(flash->platform_data->power_gpio, 0);
 
 	return ret;
 }
@@ -423,77 +407,21 @@ static int adp1653_resume(struct device *dev)
 
 #endif /* CONFIG_PM */
 
-static int adp1653_of_init(struct i2c_client *client,
-			   struct adp1653_flash *flash,
-			   struct device_node *node)
-{
-	u32 val;
-	struct adp1653_platform_data *pd;
-	enum of_gpio_flags flags;
-	int gpio;
-	struct device_node *child;
-
-	if (!node)
-		return -EINVAL;
-
-	pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL);
-	if (!pd)
-		return -ENOMEM;
-	flash->platform_data = pd;
-
-	child = of_get_child_by_name(node, "flash");
-	if (!child)
-		return -EINVAL;
-	if (of_property_read_u32(child, "flash-timeout-microsec", &val))
-		return -EINVAL;
-
-	pd->max_flash_timeout = val;
-	if (of_property_read_u32(child, "flash-max-microamp", &val))
-		return -EINVAL;
-	pd->max_flash_intensity = val/1000;
-
-	if (of_property_read_u32(child, "max-microamp", &val))
-		return -EINVAL;
-	pd->max_torch_intensity = val/1000;
-
-	child = of_get_child_by_name(node, "indicator");
-	if (!child)
-		return -EINVAL;
-	if (of_property_read_u32(child, "max-microamp", &val))
-		return -EINVAL;
-	pd->max_indicator_intensity = val;
-
-	if (!of_find_property(node, "gpios", NULL)) {
-		dev_err(&client->dev, "No gpio node\n");
-		return -EINVAL;
-	}
-
-	pd->power_gpio = of_get_gpio_flags(node, 0, &flags);
-	if (pd->power_gpio < 0) {
-		dev_err(&client->dev, "Error getting GPIO\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-
 static int adp1653_probe(struct i2c_client *client,
 			 const struct i2c_device_id *devid)
 {
 	struct adp1653_flash *flash;
 	int ret;
 
+	/* we couldn't work without platform data */
+	if (client->dev.platform_data == NULL)
+		return -ENODEV;
+
 	flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
 	if (flash == NULL)
 		return -ENOMEM;
 
 	flash->platform_data = client->dev.platform_data;
-	if (!flash->platform_data) {
-		ret = adp1653_of_init(client, flash, client->dev.of_node);
-		if (ret)
-			return ret;
-	}
 
 	mutex_init(&flash->power_lock);
 
@@ -510,10 +438,10 @@ static int adp1653_probe(struct i2c_client *client,
 		goto free_and_quit;
 
 	flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+
 	return 0;
 
 free_and_quit:
-	dev_err(&client->dev, "adp1653: failed to register device\n");
 	v4l2_ctrl_handler_free(&flash->ctrls);
 	return ret;
 }
@@ -536,7 +464,7 @@ static const struct i2c_device_id adp1653_id_table[] = {
 };
 MODULE_DEVICE_TABLE(i2c, adp1653_id_table);
 
-static const struct dev_pm_ops adp1653_pm_ops = {
+static struct dev_pm_ops adp1653_pm_ops = {
 	.suspend	= adp1653_suspend,
 	.resume		= adp1653_resume,
 };