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[media] dvb-frontends/cxd2841er: make lock wait in set_fe_tc() optional

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Don't wait for FE_HAS_LOCK in set_frontend_tc() and thus don't hammer the
lock status register with inquiries when CXD2841ER_NO_WAIT_LOCK is set
in the configuration, which also unneccessarily blocks applications until
a TS LOCK has been acquired. Rather, API and applications will check for
a TS LOCK by utilising the tune fe_op, read_status and get_frontend ops,
which is sufficient.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Acked-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Daniel Scheller 2017-04-09 16:38:21 -03:00 committed by Mauro Carvalho Chehab
parent 763f857e40
commit e3943aa6d8
2 changed files with 5 additions and 0 deletions
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4
drivers/media/dvb-frontends/cxd2841er.c
View file

@ -3460,6 +3460,10 @@ static int cxd2841er_set_frontend_tc(struct dvb_frontend *fe)
cxd2841er_tuner_set(fe);
cxd2841er_tune_done(priv);
if (priv->flags & CXD2841ER_NO_WAIT_LOCK)
goto done;
timeout = 2500;
while (timeout > 0) {
ret = cxd2841er_read_status_tc(fe, &status);

1
drivers/media/dvb-frontends/cxd2841er.h
View file

@ -29,6 +29,7 @@
#define CXD2841ER_TS_SERIAL 4 /* bit 2 */
#define CXD2841ER_ASCOT 8 /* bit 3 */
#define CXD2841ER_EARLY_TUNE 16 /* bit 4 */
#define CXD2841ER_NO_WAIT_LOCK 32 /* bit 5 */
enum cxd2841er_xtal {
SONY_XTAL_20500, /* 20.5 MHz */