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[media] mn88473: implement lock for all delivery systems 

Add capability to check if digital TV has lock for all delivery
systems.

Signed-off-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Benjamin Larsson 2015-03-21 07:18:07 -03:00 committed by Mauro Carvalho Chehab
parent d73ab40613
commit 0aa83bb181
1 changed files with 48 additions and 2 deletions
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50
drivers/staging/media/mn88473/mn88473.c
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@ -167,7 +167,10 @@ static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
unsigned int utmp;
int lock = 0;
*status = 0;
@ -176,8 +179,51 @@ static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
goto err;
}
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
switch (c->delivery_system) {
case SYS_DVBT:
ret = regmap_read(dev->regmap[0], 0x62, &utmp);
if (ret)
goto err;
if (!(utmp & 0xA0)) {
if ((utmp & 0xF) >= 0x03)
*status |= FE_HAS_SIGNAL;
if ((utmp & 0xF) >= 0x09)
lock = 1;
}
break;
case SYS_DVBT2:
ret = regmap_read(dev->regmap[2], 0x8B, &utmp);
if (ret)
goto err;
if (!(utmp & 0x40)) {
if ((utmp & 0xF) >= 0x07)
*status |= FE_HAS_SIGNAL;
if ((utmp & 0xF) >= 0x0a)
*status |= FE_HAS_CARRIER;
if ((utmp & 0xF) >= 0x0d)
*status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
}
break;
case SYS_DVBC_ANNEX_A:
ret = regmap_read(dev->regmap[1], 0x85, &utmp);
if (ret)
goto err;
if (!(utmp & 0x40)) {
ret = regmap_read(dev->regmap[1], 0x89, &utmp);
if (ret)
goto err;
if (utmp & 0x01)
lock = 1;
}
break;
default:
ret = -EINVAL;
goto err;
}
if (lock)
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
return 0;
err: