[media] dvb: LNA implementation changes

* use dvb property cache
* implement get (thus API minor++)
* PCTV 290e: 1=LNA ON, all the other values LNA OFF
  Also fix PCTV 290e LNA comment, it is disabled by default
Hans and Mauro proposed use of cache implementation of get as they
were planning to extend LNA usage for analog side too.

Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index 44a445cee74f..97112cd88a17 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -303,7 +303,7 @@ struct dvb_frontend_ops {
         int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
         int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
         int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
-        int (*set_lna)(struct dvb_frontend *, int);
+        int (*set_lna)(struct dvb_frontend *);
 
         /* These callbacks are for devices that implement their own
          * tuning algorithms, rather than a simple swzigzag
@@ -391,6 +391,8 @@ struct dtv_frontend_properties {
         u8                      atscmh_sccc_code_mode_b;
         u8                      atscmh_sccc_code_mode_c;
         u8                      atscmh_sccc_code_mode_d;
+
+        u32                     lna;
 };
 
 struct dvb_frontend {