[media] au0828: don't hardcode height/width

While this device doesn't have a scaler (or have it disabled),
the screen dimentions are a function of the standard. Ok, right
now, only 480 lines standards are implemented, although it
supports other ones. Yet, let's calculate the size, to make
easier to add more standards latter.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

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

@@ -791,7 +791,7 @@ static int au0828_i2s_init(struct au0828_dev *dev)
 static int au0828_analog_stream_enable(struct au0828_dev *d)
 {
 	struct usb_interface *iface;
-	int ret;
+	int ret, h, w;
 
 	dprintk(1, "au0828_analog_stream_enable called\n");
 
@@ -806,20 +806,21 @@ static int au0828_analog_stream_enable(struct au0828_dev *d)
 		}
 	}
 
-	/* FIXME: size should be calculated using d->width, d->height */
+	h = d->height / 2 + 2;
+	w = d->width * 2;
 
 	au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
 	au0828_writereg(d, 0x106, 0x00);
 	/* set x position */
 	au0828_writereg(d, 0x110, 0x00);
 	au0828_writereg(d, 0x111, 0x00);
-	au0828_writereg(d, 0x114, 0xa0);
-	au0828_writereg(d, 0x115, 0x05);
+	au0828_writereg(d, 0x114, w & 0xff);
+	au0828_writereg(d, 0x115, w >> 8);
 	/* set y position */
 	au0828_writereg(d, 0x112, 0x00);
 	au0828_writereg(d, 0x113, 0x00);
-	au0828_writereg(d, 0x116, 0xf2);
-	au0828_writereg(d, 0x117, 0x00);
+	au0828_writereg(d, 0x116, h & 0xff);
+	au0828_writereg(d, 0x117, h >> 8);
 	au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
 
 	return 0;
@@ -1725,6 +1726,7 @@ static int vidioc_streamoff(struct file *file, void *priv,
 		dev->vid_timeout_running = 0;
 		del_timer_sync(&dev->vid_timeout);
 
+		au0828_analog_stream_disable(dev);
 		v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
 		rc = au0828_stream_interrupt(dev);
 		if (rc != 0)
@@ -1930,7 +1932,8 @@ int au0828_analog_register(struct au0828_dev *dev,
 	struct usb_endpoint_descriptor *endpoint;
 	int i, ret;
 
-	dprintk(1, "au0828_analog_register called!\n");
+	dprintk(1, "au0828_analog_register called for intf#%d!\n",
+		interface->cur_altsetting->desc.bInterfaceNumber);
 
 	/* set au0828 usb interface0 to as5 */
 	retval = usb_set_interface(dev->usbdev,
@@ -1954,6 +1957,9 @@ int au0828_analog_register(struct au0828_dev *dev,
 			dev->max_pkt_size = (tmp & 0x07ff) *
 				(((tmp & 0x1800) >> 11) + 1);
 			dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
+			dprintk(1,
+				"Found isoc endpoint 0x%02x, max size = %d\n",
+				dev->isoc_in_endpointaddr, dev->max_pkt_size);
 		}
 	}
 	if (!(dev->isoc_in_endpointaddr)) {