[media] dvb-usb-v2: add tuner_detach callback

Add tuner_detach callback in order to allow custom detach. It is
needed when tuner driver is implemented I2C client or some other
kernel bus, but not proprietary dvb_attach / dvb_detach.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb.h b/drivers/media/usb/dvb-usb-v2/dvb_usb.h
index 7e36ee02f957..14e111e13e54 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb.h
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb.h
@@ -257,6 +257,7 @@ struct dvb_usb_device_properties {
         int (*frontend_attach) (struct dvb_usb_adapter *);
         int (*frontend_detach)(struct dvb_usb_adapter *);
         int (*tuner_attach) (struct dvb_usb_adapter *);
+        int (*tuner_detach)(struct dvb_usb_adapter *);
         int (*frontend_ctrl) (struct dvb_frontend *, int);
         int (*streaming_ctrl) (struct dvb_frontend *, int);
         int (*init) (struct dvb_usb_device *);
diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
index 02c43b52c906..1950f37df835 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
@@ -676,6 +676,14 @@ static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
                 }
         }
 
+        if (d->props->tuner_detach) {
+                ret = d->props->tuner_detach(adap);
+                if (ret < 0) {
+                        dev_dbg(&d->udev->dev, "%s: tuner_detach() failed=%d\n",
+                                        __func__, ret);
+                }
+        }
+
         if (d->props->frontend_detach) {
                 ret = d->props->frontend_detach(adap);
                 if (ret < 0) {