diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/frontends/mb86a16.c | 142 |
1 files changed, 117 insertions, 25 deletions
diff --git a/drivers/media/dvb/frontends/mb86a16.c b/drivers/media/dvb/frontends/mb86a16.c index 4f8ef2e..eddb35b 100644 --- a/drivers/media/dvb/frontends/mb86a16.c +++ b/drivers/media/dvb/frontends/mb86a16.c @@ -36,7 +36,6 @@ struct mb86a16_state { struct i2c_adapter *i2c_adap; const struct mb86a16_config *config; struct dvb_frontend frontend; - u8 signal; // tuning parameters int frequency; @@ -593,17 +592,39 @@ err: static int mb86a16_read_status(struct dvb_frontend *fe, fe_status_t *status) { + u8 stat, stat2; struct mb86a16_state *state = fe->demodulator_priv; *status = 0; - if (state->signal & 0x02) - *status |= FE_HAS_VITERBI; - if (state->signal & 0x01) + + if (mb86a16_read(state, MB86A16_SIG1, &stat) != 2) + goto err; + if (mb86a16_read(state, MB86A16_SIG2, &stat2) != 2) + goto err; + if ((stat > 25) && (stat2 > 25)) + *status |= FE_HAS_SIGNAL; + if ((stat > 45) && (stat2 > 45)) + *status |= FE_HAS_CARRIER; + + if (mb86a16_read(state, MB86A16_STATUS, &stat) != 2) + goto err; + + if (stat & 0x01) *status |= FE_HAS_SYNC; - if (state->signal & 0x03) + if (stat & 0x01) + *status |= FE_HAS_VITERBI; + + if (mb86a16_read(state, MB86A16_FRAMESYNC, &stat) != 2) + goto err; + + if ((stat & 0x0f) && (*status & FE_HAS_VITERBI)) *status |= FE_HAS_LOCK; return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; } static int sync_chk(struct mb86a16_state *state, @@ -1439,10 +1460,6 @@ static int mb86a16_set_fe(struct mb86a16_state *state) msleep_interruptible(wait_t); sync = sync_chk(state, &VIRM); dprintk(verbose, MB86A16_INFO, 1, "-------- Viterbi=[%d] SYNC=[%d] ---------", VIRM, sync); - if (mb86a16_read(state, 0x0d, &state->signal) != 2) { - dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); - return -EREMOTEIO; - } if (VIRM) { if (VIRM == 4) { // 5/6 if (SIG1 > 110) @@ -1459,22 +1476,14 @@ static int mb86a16_set_fe(struct mb86a16_state *state) iq_vt_set(state, 1); FEC_srst(state); } - if (SIG1 > 110) - wait_t = ( 786432 + state->srate / 2) / state->srate; - else - wait_t = (1572864 + state->srate / 2) / state->srate; - - msleep_interruptible(wait_t); - SEQ_set(state, 1); - } else { // 1/2, 2/3, 3/4, 7/8 - if (SIG1 > 110) - wait_t = ( 786432 + state->srate / 2) / state->srate; - else - wait_t = (1572864 + state->srate / 2) / state->srate; - - msleep_interruptible(wait_t); - SEQ_set(state, 1); } + // 1/2, 2/3, 3/4, 7/8 + if (SIG1 > 110) + wait_t = ( 786432 + state->srate / 2) / state->srate; + else + wait_t = (1572864 + state->srate / 2) / state->srate; + msleep_interruptible(wait_t); + SEQ_set(state, 1); } else { dprintk(verbose, MB86A16_INFO, 1, "NO -- SYNC"); SEQ_set(state, 1); @@ -1648,12 +1657,85 @@ static int mb86a16_sleep(struct dvb_frontend *fe) static int mb86a16_read_ber(struct dvb_frontend *fe, u32 *ber) { + u8 ber_mon, ber_tab, ber_lsb, ber_mid, ber_msb, ber_tim, ber_rst; + u32 timer; + + struct mb86a16_state *state = fe->demodulator_priv; + + *ber = 0; + if (mb86a16_read(state, MB86A16_BERMON, &ber_mon) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERTAB, &ber_tab) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERLSB, &ber_lsb) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERMID, &ber_mid) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERMSB, &ber_msb) != 2) + goto err; + /* BER monitor invalid when BER_EN = 0 */ + if (ber_mon & 0x04) { + /* coarse, fast calculation */ + *ber = ber_tab & 0x1f; + dprintk(verbose, MB86A16_DEBUG, 1, "BER coarse=[0x%02x]", *ber); + if (ber_mon & 0x01) { + /* + * BER_SEL = 1, The monitored BER is the estimated + * value with a Reed-Solomon decoder error amount at + * the deinterleaver output. + * monitored BER is expressed as a 20 bit output in total + */ + ber_rst = ber_mon >> 3; + *ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb; + if (ber_rst == 0) + timer = 12500000; + if (ber_rst == 1) + timer = 25000000; + if (ber_rst == 2) + timer = 50000000; + if (ber_rst == 3) + timer = 100000000; + + *ber /= timer; + dprintk(verbose, MB86A16_DEBUG, 1, "BER fine=[0x%02x]", *ber); + } else { + /* + * BER_SEL = 0, The monitored BER is the estimated + * value with a Viterbi decoder error amount at the + * QPSK demodulator output. + * monitored BER is expressed as a 24 bit output in total + */ + ber_tim = ber_mon >> 1; + *ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb; + if (ber_tim == 0) + timer = 16; + if (ber_tim == 1) + timer = 24; + + *ber /= 2 ^ timer; + dprintk(verbose, MB86A16_DEBUG, 1, "BER fine=[0x%02x]", *ber); + } + } return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; } static int mb86a16_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { + u8 agcm = 0; + struct mb86a16_state *state = fe->demodulator_priv; + *strength = 0; + if (mb86a16_read(state, MB86A16_AGCM, &agcm) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + *strength = ((0xff - agcm) * 100) / 256; + dprintk(verbose, MB86A16_DEBUG, 1, "Signal strength=[%d %%]", (u8) *strength); + *strength = (0xffff - 0xff) + agcm; return 0; } @@ -1708,12 +1790,22 @@ static int mb86a16_read_snr(struct dvb_frontend *fe, u16 *snr) } q_level = (*snr * 100) / (high_tide - low_tide); dprintk(verbose, MB86A16_ERROR, 1, "SNR (Quality) = [%d dB], Level=%d %%", *snr, q_level); + *snr = (0xffff - 0xff) + *snr; return 0; } static int mb86a16_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) { + u8 dist; + struct mb86a16_state *state = fe->demodulator_priv; + + if (mb86a16_read(state, MB86A16_DISTMON, &dist) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + *ucblocks = dist; + return 0; } @@ -1723,7 +1815,7 @@ static struct dvb_frontend_ops mb86a16_ops = { .type = FE_QPSK, .frequency_min = 950000, .frequency_max = 2150000, - .frequency_stepsize = 125, + .frequency_stepsize = 3000, .frequency_tolerance = 0, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, |