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media: si2165: improve read_status

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Use check_signal register for DVB-T additionally.
For DVB-C use ps_lock additionally.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Matthias Schwarzott
2017-11-05 09:25:02 -05:00
committed by Mauro Carvalho Chehab
parent 548b1f9490
commit 1e5fde1bc2
2 changed files with 37 additions and 6 deletions
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41
drivers/media/dvb-frontends/si2165.c
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@@ -651,18 +651,47 @@ static int si2165_sleep(struct dvb_frontend *fe)
static int si2165_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int ret;
u8 fec_lock = 0;
u8 u8tmp;
struct si2165_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 delsys = p->delivery_system;
if (!state->has_dvbt)
return -EINVAL;
*status = 0;
switch (delsys) {
case SYS_DVBT:
/* check fast signal type */
ret = si2165_readreg8(state, REG_CHECK_SIGNAL, &u8tmp);
if (ret < 0)
return ret;
switch (u8tmp & 0x3) {
case 0: /* searching */
case 1: /* nothing */
break;
case 2: /* digital signal */
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
break;
}
break;
case SYS_DVBC_ANNEX_A:
/* check packet sync lock */
ret = si2165_readreg8(state, REG_PS_LOCK, &u8tmp);
if (ret < 0)
return ret;
if (u8tmp & 0x01) {
*status |= FE_HAS_SIGNAL;
*status |= FE_HAS_CARRIER;
*status |= FE_HAS_VITERBI;
*status |= FE_HAS_SYNC;
}
break;
}
/* check fec_lock */
ret = si2165_readreg8(state, REG_FEC_LOCK, &fec_lock);
ret = si2165_readreg8(state, REG_FEC_LOCK, &u8tmp);
if (ret < 0)
return ret;
*status = 0;
if (fec_lock & 0x01) {
if (u8tmp & 0x01) {
*status |= FE_HAS_SIGNAL;
*status |= FE_HAS_CARRIER;
*status |= FE_HAS_VITERBI;