From 7903fbe3a636dbee04e5623931013feb80aab817 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Wed, 21 Jun 2017 11:02:42 -0400 Subject: media: af9013: change lock detection slightly Whilst rewritten largely, the basic logic remains same with one exception: do not return immediately on success case. We are going to add statistics that function and cannot return too early. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/af9013.c | 55 ++++++++++++++++++------------------ 1 file changed, 27 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c index b8f3ebfc3e27..30cf837058da 100644 --- a/drivers/media/dvb-frontends/af9013.c +++ b/drivers/media/dvb-frontends/af9013.c @@ -752,45 +752,44 @@ static int af9013_read_status(struct dvb_frontend *fe, enum fe_status *status) struct af9013_state *state = fe->demodulator_priv; struct i2c_client *client = state->client; int ret; - unsigned int utmp; + unsigned int utmp, utmp1; /* * Return status from the cache if it is younger than 2000ms with the * exception of last tune is done during 4000ms. */ - if (time_is_after_jiffies( - state->read_status_jiffies + msecs_to_jiffies(2000)) && - time_is_before_jiffies( - state->set_frontend_jiffies + msecs_to_jiffies(4000)) - ) { - *status = state->fe_status; - return 0; + if (time_is_after_jiffies(state->read_status_jiffies + msecs_to_jiffies(2000)) && + time_is_before_jiffies(state->set_frontend_jiffies + msecs_to_jiffies(4000))) { + *status = state->fe_status; } else { - *status = 0; - } + /* MPEG2 lock */ + ret = regmap_read(state->regmap, 0xd507, &utmp); + if (ret) + goto err; - /* MPEG2 lock */ - ret = regmap_read(state->regmap, 0xd507, &utmp); - if (ret) - goto err; + if ((utmp >> 6) & 0x01) { + utmp1 = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + } else { + /* TPS lock */ + ret = regmap_read(state->regmap, 0xd330, &utmp); + if (ret) + goto err; - if ((utmp >> 6) & 0x01) - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | - FE_HAS_SYNC | FE_HAS_LOCK; + if ((utmp >> 3) & 0x01) + utmp1 = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; + else + utmp1 = 0; + } - if (!*status) { - /* TPS lock */ - ret = regmap_read(state->regmap, 0xd330, &utmp); - if (ret) - goto err; + dev_dbg(&client->dev, "fe_status %02x\n", utmp1); - if ((utmp >> 3) & 0x01) - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI; - } + state->read_status_jiffies = jiffies; - state->fe_status = *status; - state->read_status_jiffies = jiffies; + state->fe_status = utmp1; + *status = utmp1; + } return 0; err: -- cgit v1.2.3