Commit f0d041e5 authored Oct 20, 2008 by Devin Heitmueller Committed by Mauro Carvalho Chehab Oct 21, 2008

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>

parent 1874c443

drivers/media/dvb/frontends/s5h1411.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -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;
		}

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