HID: wiimote: Allow direct DRM debug access

Keep track of current drm and add new debugfs file which reads or writes the
current DRM.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c
index 2fd2f0337b8d..745667e8b61b 100644
--- a/drivers/hid/hid-wiimote-core.c
+++ b/drivers/hid/hid-wiimote-core.c
@@ -238,6 +238,7 @@ void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
         cmd[1] = 0;
         cmd[2] = drm;
 
+        wdata->state.drm = drm;
         wiiproto_keep_rumble(wdata, &cmd[1]);
         wiimote_queue(wdata, cmd, sizeof(cmd));
 }
@@ -1141,6 +1142,7 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
         spin_lock_init(&wdata->state.lock);
         init_completion(&wdata->state.ready);
         mutex_init(&wdata->state.sync);
+        wdata->state.drm = WIIPROTO_REQ_DRM_K;
 
         return wdata;