[PATCH 4/4] CP2112 Devicetree Support

[Danny Kaehn <kaehndan@gmail.com>]

Bind i2c and gpio interfaces to subnodes with names
"i2c" and "gpio" if they exist, respectively. This
allows the gpio and i2c controllers to be described
in DT as usual.

Signed-off-by: Danny Kaehn <kaehndan@gmail.com>
---
 drivers/hid/hid-cp2112.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 27cadadda7c9..99e8043e1c34 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1310,6 +1310,7 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	dev->adap.algo		= &smbus_algorithm;
 	dev->adap.algo_data	= dev;
 	dev->adap.dev.parent	= &hdev->dev;
+	dev->adap.dev.of_node   = of_get_child_by_name(hdev->dev.of_node, "i2c");
 	snprintf(dev->adap.name, sizeof(dev->adap.name),
 		 "CP2112 SMBus Bridge on hidraw%d",
 		 ((struct hidraw *)hdev->hidraw)->minor);
@@ -1336,6 +1337,9 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	dev->gc.ngpio			= 8;
 	dev->gc.can_sleep		= 1;
 	dev->gc.parent			= &hdev->dev;
+#if defined(CONFIG_OF_GPIO)
+	dev->gc.of_node			= of_get_child_by_name(hdev->dev.of_node, "gpio");
+#endif
 
 	dev->irq.name = "cp2112-gpio";
 	dev->irq.irq_startup = cp2112_gpio_irq_startup;
@@ -1391,6 +1395,11 @@ static void cp2112_remove(struct hid_device *hdev)
 	struct cp2112_device *dev = hid_get_drvdata(hdev);
 	int i;
 
+	of_node_put(dev->adap.dev.of_node);
+#if defined(CONFIG_OF_GPIO)
+	of_node_put(dev->gc.of_node);
+#endif
+
 	sysfs_remove_group(&hdev->dev.kobj, &cp2112_attr_group);
 	i2c_del_adapter(&dev->adap);
 
-- 
2.25.1