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authorHans Verkuil <hverkuil@xs4all.nl>2006-08-08 16:10:15 +0400
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-08-08 22:53:04 +0400
commit43c560fa59ef2688d891f6431e972b7763b73a00 (patch)
tree6b58b6764d2f9cac26ba3e646fc8c867bbe1e262 /drivers/media
parente335fada5afef0658038b6bec432d37f332da9fc (diff)
downloadlinux-43c560fa59ef2688d891f6431e972b7763b73a00.tar.xz
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>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/tuner-types.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/media/video/tuner-types.c b/drivers/media/video/tuner-types.c
index a167e17c6dcd..d7eadc2c298d 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[] = {