From 7cccccc33aa9ab7171ca05c0b59c62912509b23e Mon Sep 17 00:00:00 2001
From: Hartmut Birr <e9hack@googlemail.com>
Date: Wed, 31 Oct 2007 01:57:58 -0300
Subject: [PATCH] V4L/DVB (6500): tda10021: Fix reported signal strength
Fix reported signal strength value (higher value = higher signal strength).
Signed-off-by: Hartmut Birr <e9hack@googlemail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
drivers/media/dvb/frontends/tda10021.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/media/dvb/frontends/tda10021.c b/drivers/media/dvb/frontends/tda10021.c
index 5ee729846a9f..45137d2ebfb9 100644
--- a/drivers/media/dvb/frontends/tda10021.c
+++ b/drivers/media/dvb/frontends/tda10021.c
@@ -312,7 +312,11 @@ static int tda10021_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
struct tda10021_state* state = fe->demodulator_priv;
+ u8 config = tda10021_readreg(state, 0x02);
u8 gain = tda10021_readreg(state, 0x17);
+ if (config & 0x02)
+ /* the agc value is inverted */
+ gain = ~gain;
*strength = (gain << 8) | gain;
return 0;
--
2.20.1