Input: wacom - implement suspend and autosuspend

This implements suspend and autosuspend support for wacom devices.
It works by using the usb last busy functionality triggered in the
completion callback.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index acf9830698cb..706619d06f71 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -101,8 +101,11 @@ struct wacom {
         dma_addr_t data_dma;
         struct input_dev *dev;
         struct usb_device *usbdev;
+        struct usb_interface *intf;
         struct urb *irq;
         struct wacom_wac * wacom_wac;
+        struct mutex lock;
+        int open:1;
         char phys[32];
 };