HID: gearvr: add support for Samsung Gear VRnext/vr-20170117

The Gear VR is a connected through USB to mobile phones and
generates a hidraw device as interface to userspace.

Change-Id: Ib7814fa6f86a034d5ab6fd59120efb8c2392f9bd
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/hid/hid-gearvr.c b/drivers/hid/hid-gearvr.c
new file mode 100644
index 000000000000..09e6459b0c4f
--- /dev/null
+++ b/drivers/hid/hid-gearvr.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Author: Andi Shyti <andi.shyti@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Samsung Gear VR device driver
+ */
+
+#include <linux/hidraw.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+static int gearvr_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+	int err;
+
+	err = hid_parse(hdev);
+	if (err)
+		return err;
+
+	err = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+	if (err)
+		return err;
+
+	err = hid_hw_power(hdev, PM_HINT_FULLON);
+	if (err < 0)
+		goto fail_dev_stop;
+
+	err = hid_hw_open(hdev);
+	if (err < 0)
+		goto fail_power_off;
+
+	return 0;
+
+fail_power_off:
+	hid_hw_power(hdev, PM_HINT_NORMAL);
+fail_dev_stop:
+	hid_hw_stop(hdev);
+
+	return err;
+}
+
+static void gearvr_remove(struct hid_device *hdev)
+{
+	hid_hw_close(hdev);
+	hid_hw_power(hdev, PM_HINT_NORMAL);
+	hid_hw_stop(hdev);
+}
+
+static const struct hid_device_id gearvr_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS,
+			USB_DEVICE_ID_SAMSUNG_GEARVR_R320) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(hid, gearvr_devices);
+
+static struct hid_driver gearvr_driver = {
+	.name = "gearvr",
+	.id_table = gearvr_devices,
+	.probe = gearvr_probe,
+	.remove = gearvr_remove,
+};
+
+module_hid_driver(gearvr_driver);
+
+MODULE_AUTHOR("Andi Shyti <andi.shyti@samsung.com>");
+MODULE_DESCRIPTION("Samsung Gear VR device driver");
+MODULE_LICENSE("GPL v2");