V4L/DVB (10746): sms1xxx: enable rf switch on Hauppauge Tiger devices

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/media/dvb/siano/smsdvb.c b/drivers/media/dvb/siano/smsdvb.c
index 2da953a4f4f5..0a7af92b66aa 100644
--- a/drivers/media/dvb/siano/smsdvb.c
+++ b/drivers/media/dvb/siano/smsdvb.c
@@ -262,6 +262,7 @@ static int smsdvb_set_frontend(struct dvb_frontend *fe,
                 struct SmsMsgHdr_ST     Msg;
                 u32             Data[3];
         } Msg;
+        int ret;
 
         Msg.Msg.msgSrcId  = DVBT_BDA_CONTROL_MSG_ID;
         Msg.Msg.msgDstId  = HIF_TASK;
@@ -282,6 +283,24 @@ static int smsdvb_set_frontend(struct dvb_frontend *fe,
         default: return -EINVAL;
         }
 
+        /* Disable LNA, if any. An error is returned if no LNA is present */
+        ret = sms_board_lna_control(client->coredev, 0);
+        if (ret == 0) {
+                fe_status_t status;
+
+                /* tune with LNA off at first */
+                ret = smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
+                                                  &client->tune_done);
+
+                smsdvb_read_status(fe, &status);
+
+                if (status & FE_HAS_LOCK)
+                        return ret;
+
+                /* previous tune didnt lock - enable LNA and tune again */
+                sms_board_lna_control(client->coredev, 1);
+        }
+
         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
                                            &client->tune_done);
 }