From 4cfae67515ed4c7bf5bb94fde20130153936f465 Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Sat, 29 Sep 2012 16:06:23 -0300 Subject: [PATCH] [media] tda18271: make 'low-power standby mode after attach' multi-instance safe Ensure that unnecessary features are powered down at the end of the attach() function on attach of the tuner's first instance. If the configuration requires the loop thru or xtout features, they will remain enabled. This must *only* be done after attaching the first instance of the tuner. If there are multiple instances of the tuner, the bridge driver will need to maintain power managament by itself. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/tuners/tda18271-fe.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c index 5f5d866d3fc9..de21197ca4b9 100644 --- a/drivers/media/tuners/tda18271-fe.c +++ b/drivers/media/tuners/tda18271-fe.c @@ -1285,6 +1285,10 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, (priv->id == TDA18271HDC2)) tda18271c2_rf_cal_init(fe); + /* enter standby mode, with required output features enabled */ + ret = tda18271_toggle_output(fe, 1); + tda_fail(ret); + mutex_unlock(&priv->lock); break; default: @@ -1323,9 +1327,6 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, if (tda18271_debug & (DBG_MAP | DBG_ADV)) tda18271_dump_std_map(fe); - ret = tda18271_sleep(fe); - tda_fail(ret); - return fe; fail: mutex_unlock(&tda18271_list_mutex); -- 2.11.0