From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Tue, 8 Aug 2006 12:10:15 +0000 (-0300)
Subject: V4L/DVB (4419): Turn on the Low Noise Amplifier of the Samsung tuners.
X-Git-Tag: v2.6.18-rc5~124^2~3
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43c560fa59ef2688d891f6431e972b7763b73a00;p=linux-2.6

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 a167e17c6d..d7eadc2c29 100644
--- 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[] = {