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| author | Devin Heitmueller <devin.heitmueller@gmail.com> | 2008-10-20 10:17:08 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-21 14:31:01 -0200 |
| commit | f0d041e50bc6c8a677922d72b010f80af9b23b18 (patch) | |
| tree | 56bcf5090ce53800bfe2812820e6cac6cb83e22a /drivers/media | |
| parent | 1874c443280d61bef1466a30c1e2819656d54eea (diff) | |
| download | op-kernel-dev-f0d041e50bc6c8a677922d72b010f80af9b23b18.zip op-kernel-dev-f0d041e50bc6c8a677922d72b010f80af9b23b18.tar.gz | |
V4L/DVB (9314): s5h1411: Perform s5h1411 soft reset after tuning
If you instruct the tuner to change frequencies, it can take up to 2500ms to
get a demod lock. By performing a soft reset after the tuning call (which
is consistent with how the Pinnacle 801e Windows driver behaves), you get
a demod lock inside of 300ms
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Reviewed-by: Michael Krufky <mkrufky@linuxtv.org>
Acked-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/frontends/s5h1411.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/dvb/frontends/s5h1411.c b/drivers/media/dvb/frontends/s5h1411.c index e328d88..40e0fed 100644 --- a/drivers/media/dvb/frontends/s5h1411.c +++ b/drivers/media/dvb/frontends/s5h1411.c @@ -585,9 +585,6 @@ static int s5h1411_set_frontend(struct dvb_frontend *fe, s5h1411_enable_modulation(fe, p->u.vsb.modulation); - /* Allow the demod to settle */ - msleep(100); - if (fe->ops.tuner_ops.set_params) { if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); @@ -598,6 +595,10 @@ static int s5h1411_set_frontend(struct dvb_frontend *fe, fe->ops.i2c_gate_ctrl(fe, 0); } + /* Issue a reset to the demod so it knows to resync against the + newly tuned frequency */ + s5h1411_softreset(fe); + return 0; } |
