From a78b41d5fd9a04037c7b29e59c7319035a54a150 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 2 Mar 2013 13:45:31 -0300 Subject: [PATCH] [media] mb86a20s: Always reset the frontend with set_frontend Always init the frontend when set_frontend is called. The rationale is: it was noticed that, on some devices, it fails to lock with a different channel. It seems that some other registers need to be restored to its initial state, when the channel changes. As it is better to reset everything, even wasting a few more miliseconds than to loose channel lock, let's change the logic to always reset. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/mb86a20s.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c index 68a88180b631..b6cdc444fb45 100644 --- a/drivers/media/dvb-frontends/mb86a20s.c +++ b/drivers/media/dvb-frontends/mb86a20s.c @@ -1854,18 +1854,9 @@ static int mb86a20s_set_frontend(struct dvb_frontend *fe) fe->ops.i2c_gate_ctrl(fe, 1); fe->ops.tuner_ops.set_params(fe); - if (fe->ops.tuner_ops.get_if_frequency) { + if (fe->ops.tuner_ops.get_if_frequency) fe->ops.tuner_ops.get_if_frequency(fe, &if_freq); - /* - * If the IF frequency changed, re-initialize the - * frontend. This is needed by some drivers like tda18271, - * that only sets the IF after receiving a set_params() call - */ - if (if_freq != state->if_freq) - state->need_init = true; - } - /* * Make it more reliable: if, for some reason, the initial * device initialization doesn't happen, initialize it when @@ -1877,9 +1868,13 @@ static int mb86a20s_set_frontend(struct dvb_frontend *fe) * So, this hack is needed, in order to make Kworld SBTVD to work. * * It is also needed to change the IF after the initial init. + * + * HACK: Always init the frontend when set_frontend is called: + * it was noticed that, on some devices, it fails to lock on a + * different channel. So, it is better to reset everything, even + * wasting some time, than to loose channel lock. */ - if (state->need_init) - mb86a20s_initfe(fe); + mb86a20s_initfe(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); -- GitLab