diff options
| author | Oliver Endriss <o.endriss@gmx.de> | 2007-05-28 23:06:27 +0200 |
|---|---|---|
| committer | Oliver Endriss <o.endriss@gmx.de> | 2007-05-28 23:06:27 +0200 |
| commit | 7c6944ea418de5fd6663e249594380a925c33253 (patch) | |
| tree | c46587a0652a8e57c52c7b467317ec0e12a371f2 /linux/drivers/media/dvb/frontends/tda826x.c | |
| parent | 599566a6b844b0086539e650336feada4b3e5bbb (diff) | |
| download | mediapointer-dvb-s2-7c6944ea418de5fd6663e249594380a925c33253.tar.gz mediapointer-dvb-s2-7c6944ea418de5fd6663e249594380a925c33253.tar.bz2 | |
tda10086,tda826x: fix tuning, STR/SNR values
From: Oliver Endriss <o.endriss@gmx.de>
Several people reported unreliable reception with the current driver.
Furthermore, STR and SNR values seem to be inverted.
This fix is based on a patch posted by Hartmut Hackman.
Thanks to Helmut Auer for testing and helping to optimize the patch.
tda826x:
- set baseband cut-off to 19 MHz
tda10086:
- change the parameters of the carrier recovery loop
- toggle register 0x02 between 0x35 (tuning) and 0x00 (locked)
- invert STR and SNR values
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Thanks-to: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Thanks-to: Helmut Auer <vdr@helmutauer.de>
Diffstat (limited to 'linux/drivers/media/dvb/frontends/tda826x.c')
| -rw-r--r-- | linux/drivers/media/dvb/frontends/tda826x.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/linux/drivers/media/dvb/frontends/tda826x.c b/linux/drivers/media/dvb/frontends/tda826x.c index 79f971dc5..bd3ebc284 100644 --- a/linux/drivers/media/dvb/frontends/tda826x.c +++ b/linux/drivers/media/dvb/frontends/tda826x.c @@ -89,8 +89,8 @@ static int tda826x_set_params(struct dvb_frontend *fe, struct dvb_frontend_param buf[2] = (1<<5) | 0x0b; // 1Mhz + 0.45 VCO buf[3] = div >> 7; buf[4] = div << 1; - buf[5] = 0xff; // basedband filter to max - buf[6] = 0xfe; // gains at max + no RF attenuation + buf[5] = 0x77; // baseband cut-off 19 MHz + buf[6] = 0xfe; // baseband gain 9 db + no RF attenuation buf[7] = 0x83; // charge pumps at high, tests off buf[8] = 0x80; // recommended value 4 for AMPVCO + disable ports. buf[9] = 0x1a; // normal caltime + recommended values for SELTH + SELVTL |