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authorDevin Heitmueller <dheitmueller@linuxtv.org>2009-01-26 03:07:59 -0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-16 17:32:31 -0700
commitc269003c1d49ac6b6802f8cb0345cd7a556b7884 (patch)
tree130abef0fbc24362c4f79fcc71146643890ba63d
parentf450e06e1f1d3e3b41698c3ada4a6177d30b603b (diff)
DVB: s5h1409: Perform s5h1409 soft reset after tuning
(cherry picked from commit 67e70baf043cfdcdaf5972bc94be82632071536b) Just like with the s5h1411, the s5h1409 needs a soft-reset in order for it to know that the tuner has been told to change frequencies. This change changes the behavior from "random tuning times between 500ms to complete tuning lock failures" to "tuning lock consistently within 700ms". Thanks to Robert Krakora <rob.krakora@messagenetsystems.com> for doing initial testing of the patch on the KWorld 330U. Thanks to Andy Walls <awalls@radix.net> for doing testing of the patch on the HVR-1600. Thanks to Michael Krufky <mkrufky@linuxtv.org> for doing additional testing. Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/media/dvb/frontends/s5h1409.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index cf4d8936bb83..3e08d985d6e5 100644
--- a/drivers/media/dvb/frontends/s5h1409.c
+++ b/drivers/media/dvb/frontends/s5h1409.c
@@ -545,9 +545,6 @@ static int s5h1409_set_frontend(struct dvb_frontend *fe,
s5h1409_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);
@@ -562,6 +559,10 @@ static int s5h1409_set_frontend(struct dvb_frontend *fe,
s5h1409_set_qam_interleave_mode(fe);
}
+ /* Issue a reset to the demod so it knows to resync against the
+ newly tuned frequency */
+ s5h1409_softreset(fe);
+
return 0;
}