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[media] rtl2832: implement .get_frontend()

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Copied from rtl2830.

Cc: Thomas Mair <thomas.mair86@googlemail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2012-08-21 19:56:20 -03:00 committed by Mauro Carvalho Chehab
parent e1f4326971
commit 0ce67a2a59
1 changed files with 113 additions and 0 deletions
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113
drivers/media/dvb-frontends/rtl2832.c
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@ -636,6 +636,118 @@ err:
return ret;
}
static int rtl2832_get_frontend(struct dvb_frontend *fe)
{
struct rtl2832_priv *priv = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
u8 buf[3];
if (priv->sleeping)
return 0;
ret = rtl2832_rd_regs(priv, 0x3c, 3, buf, 2);
if (ret)
goto err;
ret = rtl2832_rd_reg(priv, 0x51, 3, &buf[2]);
if (ret)
goto err;
dbg("%s: TPS=%*ph", __func__, 3, buf);
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 rtl2832_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct rtl2832_priv *priv = fe->demodulator_priv;
@ -749,6 +861,7 @@ static struct dvb_frontend_ops rtl2832_ops = {
.get_tune_settings = rtl2832_get_tune_settings,
.set_frontend = rtl2832_set_frontend,
.get_frontend = rtl2832_get_frontend,
.read_status = rtl2832_read_status,
.i2c_gate_ctrl = rtl2832_i2c_gate_ctrl,