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[media] rtl2830: implement .get_frontend() 

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2012-05-18 15:58:57 -03:00 committed by Mauro Carvalho Chehab
parent 78e750754b
commit 631a2b6112
1 changed files with 110 additions and 0 deletions
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110
drivers/media/dvb/frontends/rtl2830.c
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@ -374,6 +374,115 @@ static int rtl2830_set_frontend(struct dvb_frontend *fe)
return ret;
}
static int rtl2830_get_frontend(struct dvb_frontend *fe)
{
struct rtl2830_priv *priv = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
u8 buf[3];
ret = rtl2830_rd_regs(priv, 0x33c, buf, 2);
if (ret)
goto err;
ret = rtl2830_rd_reg(priv, 0x351, &buf[2]);
if (ret)
goto err;
dbg("%s: TPS=%02x %02x %02x", __func__, buf[0], buf[1], buf[2]);
switch ((buf[0] >> 2) & 3) {
case 0:
c->modulation = QPSK;
break;
case 1:
c->modulation = QAM_16;
break;
case 2:
c->modulation = QAM_64;
break;
}
switch ((buf[2] >> 2) & 1) {
case 0:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case 1:
c->transmission_mode = TRANSMISSION_MODE_8K;
}
switch ((buf[2] >> 0) & 3) {
case 0:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case 1:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case 2:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case 3:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
}
switch ((buf[0] >> 4) & 7) {
case 0:
c->hierarchy = HIERARCHY_NONE;
break;
case 1:
c->hierarchy = HIERARCHY_1;
break;
case 2:
c->hierarchy = HIERARCHY_2;
break;
case 3:
c->hierarchy = HIERARCHY_4;
break;
}
switch ((buf[1] >> 3) & 7) {
case 0:
c->code_rate_HP = FEC_1_2;
break;
case 1:
c->code_rate_HP = FEC_2_3;
break;
case 2:
c->code_rate_HP = FEC_3_4;
break;
case 3:
c->code_rate_HP = FEC_5_6;
break;
case 4:
c->code_rate_HP = FEC_7_8;
break;
}
switch ((buf[1] >> 0) & 7) {
case 0:
c->code_rate_LP = FEC_1_2;
break;
case 1:
c->code_rate_LP = FEC_2_3;
break;
case 2:
c->code_rate_LP = FEC_3_4;
break;
case 3:
c->code_rate_LP = FEC_5_6;
break;
case 4:
c->code_rate_LP = FEC_7_8;
break;
}
return 0;
err:
dbg("%s: failed=%d", __func__, ret);
return ret;
}
static int rtl2830_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct rtl2830_priv *priv = fe->demodulator_priv;
@ -622,6 +731,7 @@ static struct dvb_frontend_ops rtl2830_ops = {
.get_tune_settings = rtl2830_get_tune_settings,
.set_frontend = rtl2830_set_frontend,
.get_frontend = rtl2830_get_frontend,
.read_status = rtl2830_read_status,
.read_snr = rtl2830_read_snr,