V4L/DVB (11166): pvrusb2: Implement status fetching from sub-devices

Implement status fetching operations in terms of calling out to
sub-device(s).
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/pvrusb2/pvrusb2-hdw.c

@@ -4816,7 +4816,21 @@ int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val)
 
 void pvr2_hdw_status_poll(struct pvr2_hdw *hdw)
 {
+	struct v4l2_tuner *vtp = &hdw->tuner_signal_info;
+	memset(vtp, 0, sizeof(*vtp));
 	pvr2_i2c_core_status_poll(hdw);
+	/* Note: There apparently is no replacement for VIDIOC_CROPCAP
+	   using v4l2-subdev - therefore we can't support that AT ALL right
+	   now.  (Of course, no sub-drivers seem to implement it either.
+	   But now it's a a chicken and egg problem...) */
+	v4l2_device_call_all(&hdw->v4l2_dev, 0, tuner, g_tuner,
+			     &hdw->tuner_signal_info);
+	pvr2_trace(PVR2_TRACE_CHIPS, "client status poll"
+		   " type=%u strength=%u audio=0x%x cap=0x%x"
+		   " low=%u hi=%u",
+		   vtp->type,
+		   vtp->signal, vtp->rxsubchans, vtp->capability,
+		   vtp->rangelow, vtp->rangehigh);
 }
 
 

drivers/media/video/pvrusb2/pvrusb2-i2c-track.c

@@ -112,20 +112,12 @@ void pvr2_i2c_core_status_poll(struct pvr2_hdw *hdw)
 {
 	struct pvr2_i2c_client *cp;
 	mutex_lock(&hdw->i2c_list_lock); do {
-		struct v4l2_tuner *vtp = &hdw->tuner_signal_info;
-		memset(vtp,0,sizeof(*vtp));
 		list_for_each_entry(cp, &hdw->i2c_clients, list) {
 			if (!cp->detected_flag) continue;
 			if (!cp->status_poll) continue;
 			cp->status_poll(cp);
 		}
 		hdw->tuner_signal_stale = 0;
-		pvr2_trace(PVR2_TRACE_CHIPS,"i2c status poll"
-			   " type=%u strength=%u audio=0x%x cap=0x%x"
-			   " low=%u hi=%u",
-			   vtp->type,
-			   vtp->signal,vtp->rxsubchans,vtp->capability,
-			   vtp->rangelow,vtp->rangehigh);
 	} while (0); mutex_unlock(&hdw->i2c_list_lock);
 }