[media] au0828: Add suspend code for DVB

The scheduled work should be cancelled during suspend.

At resume time, we need to set the frontend again. So,
add such logic to the driver.
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/usb/au0828/au0828-core.c

@@ -290,6 +290,7 @@ static int au0828_suspend(struct usb_interface *interface,
 		return 0;
 
 	au0828_rc_suspend(dev);
+	au0828_dvb_suspend(dev);
 
 	/* FIXME: should suspend also ATV/DTV */
 
@@ -309,6 +310,7 @@ static int au0828_resume(struct usb_interface *interface)
 	au0828_gpio_setup(dev);
 
 	au0828_rc_resume(dev);
+	au0828_dvb_resume(dev);
 
 	/* FIXME: should resume also ATV/DTV */
 

drivers/media/usb/au0828/au0828-dvb.c

@@ -23,7 +23,6 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/device.h>
-#include <linux/suspend.h>
 #include <media/v4l2-common.h>
 #include <media/tuner.h>
 
@@ -618,3 +617,33 @@ int au0828_dvb_register(struct au0828_dev *dev)
 
 	return 0;
 }
+
+void au0828_dvb_suspend(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+
+	if (dvb && dev->urb_streaming) {
+		cancel_work_sync(&dev->restart_streaming);
+
+		/* Stop transport */
+		mutex_lock(&dvb->lock);
+		stop_urb_transfer(dev);
+		au0828_stop_transport(dev, 1);
+		mutex_unlock(&dvb->lock);
+	}
+}
+
+void au0828_dvb_resume(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+
+	if (dvb && dev->urb_streaming) {
+		au0828_set_frontend(dvb->frontend);
+
+		/* Start transport */
+		mutex_lock(&dvb->lock);
+		au0828_start_transport(dev);
+		start_urb_transfer(dev);
+		mutex_unlock(&dvb->lock);
+	}
+}

drivers/media/usb/au0828/au0828.h

@@ -316,6 +316,8 @@ void au0828_analog_unregister(struct au0828_dev *dev);
 /* au0828-dvb.c */
 extern int au0828_dvb_register(struct au0828_dev *dev);
 extern void au0828_dvb_unregister(struct au0828_dev *dev);
+void au0828_dvb_suspend(struct au0828_dev *dev);
+void au0828_dvb_resume(struct au0828_dev *dev);
 
 /* au0828-vbi.c */
 extern struct videobuf_queue_ops au0828_vbi_qops;