HID: wiimote: Add wiimote event handler

Create array of all event handlers and call each handler when we
receive the related event.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index bfc50493ec6b..c86ae92b51db 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -130,10 +130,22 @@ static int wiimote_input_event(struct input_dev *dev, unsigned int type,
         return 0;
 }
 
+struct wiiproto_handler {
+        __u8 id;
+        size_t size;
+        void (*func)(struct wiimote_data *wdata, const __u8 *payload);
+};
+
+static struct wiiproto_handler handlers[] = {
+        { .id = 0 }
+};
+
 static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
                                                         u8 *raw_data, int size)
 {
         struct wiimote_data *wdata = hid_get_drvdata(hdev);
+        struct wiiproto_handler *h;
+        int i;
 
         if (!atomic_read(&wdata->ready))
                 return -EBUSY;
@@ -143,6 +155,12 @@ static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
         if (size < 1)
                 return -EINVAL;
 
+        for (i = 0; handlers[i].id; ++i) {
+                h = &handlers[i];
+                if (h->id == raw_data[0] && h->size < size)
+                        h->func(wdata, &raw_data[1]);
+        }
+
         return 0;
 }