diff options
Diffstat (limited to 'drivers/media/dvb/frontends/rtl2830.c')
| -rw-r--r-- | drivers/media/dvb/frontends/rtl2830.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/rtl2830.c b/drivers/media/dvb/frontends/rtl2830.c index 6e4029de3c73..507ef4bb047a 100644 --- a/drivers/media/dvb/frontends/rtl2830.c +++ b/drivers/media/dvb/frontends/rtl2830.c @@ -374,6 +374,115 @@ err: 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, |