V4L/DVB (4419): Turn on the Low Noise Amplifier of the Samsung tuners.

Without the LNA these tuners perform very poorly (read 'unwatchable') when
the signal is weak.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/tuner-types.c b/drivers/media/video/tuner-types.c
index a167e17..d7eadc2 100644 (file)
--- a/drivers/media/video/tuner-types.c
+++ b/drivers/media/video/tuner-types.c
@@ -1027,10 +1027,11 @@ static struct tuner_params tuner_tnf_5335mf_params[] = {
 /* 70-79 */
 /* ------------ TUNER_SAMSUNG_TCPN_2121P30A - Samsung NTSC ------------ */
 
+/* '+ 4' turns on the Low Noise Amplifier */
 static struct tuner_range tuner_samsung_tcpn_2121p30a_ntsc_ranges[] = {
-       { 16 * 130.00 /*MHz*/, 0xce, 0x01, },
-       { 16 * 364.50 /*MHz*/, 0xce, 0x02, },
-       { 16 * 999.99        , 0xce, 0x08, },
+       { 16 * 130.00 /*MHz*/, 0xce, 0x01 + 4, },
+       { 16 * 364.50 /*MHz*/, 0xce, 0x02 + 4, },
+       { 16 * 999.99        , 0xce, 0x08 + 4, },
 };
 
 static struct tuner_params tuner_samsung_tcpn_2121p30a_params[] = {
@@ -1060,10 +1061,11 @@ static struct tuner_params tuner_thomson_fe6600_params[] = {
 
 /* ------------ TUNER_SAMSUNG_TCPG_6121P30A - Samsung PAL ------------ */
 
+/* '+ 4' turns on the Low Noise Amplifier */
 static struct tuner_range tuner_samsung_tcpg_6121p30a_pal_ranges[] = {
-       { 16 * 146.25 /*MHz*/, 0xce, 0x01, },
-       { 16 * 428.50 /*MHz*/, 0xce, 0x02, },
-       { 16 * 999.99        , 0xce, 0x08, },
+       { 16 * 146.25 /*MHz*/, 0xce, 0x01 + 4, },
+       { 16 * 428.50 /*MHz*/, 0xce, 0x02 + 4, },
+       { 16 * 999.99        , 0xce, 0x08 + 4, },
 };
 
 static struct tuner_params tuner_samsung_tcpg_6121p30a_params[] = {