diff options
Diffstat (limited to 'drivers/media/dvb-frontends/drxk_hard.c')
| -rw-r--r-- | drivers/media/dvb-frontends/drxk_hard.c | 309 |
1 files changed, 256 insertions, 53 deletions
diff --git a/drivers/media/dvb-frontends/drxk_hard.c b/drivers/media/dvb-frontends/drxk_hard.c index c2fc7da0d6bf..ec24d71e153d 100644 --- a/drivers/media/dvb-frontends/drxk_hard.c +++ b/drivers/media/dvb-frontends/drxk_hard.c @@ -1947,8 +1947,7 @@ static int ShutDown(struct drxk_state *state) return 0; } -static int GetLockStatus(struct drxk_state *state, u32 *pLockStatus, - u32 Time) +static int GetLockStatus(struct drxk_state *state, u32 *pLockStatus) { int status = -EINVAL; @@ -2490,32 +2489,6 @@ error: return status; } -static int ReadIFAgc(struct drxk_state *state, u32 *pValue) -{ - u16 agcDacLvl; - int status; - u16 Level = 0; - - dprintk(1, "\n"); - - status = read16(state, IQM_AF_AGC_IF__A, &agcDacLvl); - if (status < 0) { - printk(KERN_ERR "drxk: Error %d on %s\n", status, __func__); - return status; - } - - *pValue = 0; - - if (agcDacLvl > DRXK_AGC_DAC_OFFSET) - Level = agcDacLvl - DRXK_AGC_DAC_OFFSET; - if (Level < 14000) - *pValue = (14000 - Level) / 4; - else - *pValue = 0; - - return status; -} - static int GetQAMSignalToNoise(struct drxk_state *state, s32 *pSignalToNoise) { @@ -2654,12 +2627,7 @@ static int GetDVBTSignalToNoise(struct drxk_state *state, /* log(x) x = (16bits + 16bits) << 15 ->32 bits */ c = Log10Times100(SqrErrIQ); - iMER = a + b; - /* No negative MER, clip to zero */ - if (iMER > c) - iMER -= c; - else - iMER = 0; + iMER = a + b - c; } *pSignalToNoise = iMER; @@ -6380,46 +6348,257 @@ static int drxk_set_parameters(struct dvb_frontend *fe) fe->ops.tuner_ops.get_if_frequency(fe, &IF); Start(state, 0, IF); + /* After set_frontend, stats aren't avaliable */ + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + /* printk(KERN_DEBUG "drxk: %s IF=%d done\n", __func__, IF); */ return 0; } -static int drxk_read_status(struct dvb_frontend *fe, fe_status_t *status) +static int get_strength(struct drxk_state *state, u64 *strength) { + int status; + struct SCfgAgc rfAgc, ifAgc; + u32 totalGain = 0; + u32 atten = 0; + u32 agcRange = 0; + u16 scu_lvl = 0; + u16 scu_coc = 0; + /* FIXME: those are part of the tuner presets */ + u16 tunerRfGain = 50; /* Default value on az6007 driver */ + u16 tunerIfGain = 40; /* Default value on az6007 driver */ + + *strength = 0; + + if (IsDVBT(state)) { + rfAgc = state->m_dvbtRfAgcCfg; + ifAgc = state->m_dvbtIfAgcCfg; + } else if (IsQAM(state)) { + rfAgc = state->m_qamRfAgcCfg; + ifAgc = state->m_qamIfAgcCfg; + } else { + rfAgc = state->m_atvRfAgcCfg; + ifAgc = state->m_atvIfAgcCfg; + } + + if (rfAgc.ctrlMode == DRXK_AGC_CTRL_AUTO) { + /* SCU outputLevel */ + status = read16(state, SCU_RAM_AGC_RF_IACCU_HI__A, &scu_lvl); + if (status < 0) + return status; + + /* SCU c.o.c. */ + read16(state, SCU_RAM_AGC_RF_IACCU_HI_CO__A, &scu_coc); + if (status < 0) + return status; + + if (((u32) scu_lvl + (u32) scu_coc) < 0xffff) + rfAgc.outputLevel = scu_lvl + scu_coc; + else + rfAgc.outputLevel = 0xffff; + + /* Take RF gain into account */ + totalGain += tunerRfGain; + + /* clip output value */ + if (rfAgc.outputLevel < rfAgc.minOutputLevel) + rfAgc.outputLevel = rfAgc.minOutputLevel; + if (rfAgc.outputLevel > rfAgc.maxOutputLevel) + rfAgc.outputLevel = rfAgc.maxOutputLevel; + + agcRange = (u32) (rfAgc.maxOutputLevel - rfAgc.minOutputLevel); + if (agcRange > 0) { + atten += 100UL * + ((u32)(tunerRfGain)) * + ((u32)(rfAgc.outputLevel - rfAgc.minOutputLevel)) + / agcRange; + } + } + + if (ifAgc.ctrlMode == DRXK_AGC_CTRL_AUTO) { + status = read16(state, SCU_RAM_AGC_IF_IACCU_HI__A, + &ifAgc.outputLevel); + if (status < 0) + return status; + + status = read16(state, SCU_RAM_AGC_INGAIN_TGT_MIN__A, + &ifAgc.top); + if (status < 0) + return status; + + /* Take IF gain into account */ + totalGain += (u32) tunerIfGain; + + /* clip output value */ + if (ifAgc.outputLevel < ifAgc.minOutputLevel) + ifAgc.outputLevel = ifAgc.minOutputLevel; + if (ifAgc.outputLevel > ifAgc.maxOutputLevel) + ifAgc.outputLevel = ifAgc.maxOutputLevel; + + agcRange = (u32) (ifAgc.maxOutputLevel - ifAgc.minOutputLevel); + if (agcRange > 0) { + atten += 100UL * + ((u32)(tunerIfGain)) * + ((u32)(ifAgc.outputLevel - ifAgc.minOutputLevel)) + / agcRange; + } + } + + /* + * Convert to 0..65535 scale. + * If it can't be measured (AGC is disabled), just show 100%. + */ + if (totalGain > 0) + *strength = (65535UL * atten / totalGain / 100); + else + *strength = 65535; + + return 0; +} + +static int drxk_get_stats(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; struct drxk_state *state = fe->demodulator_priv; + int status; u32 stat; - - dprintk(1, "\n"); + u16 reg16; + u32 post_bit_count; + u32 post_bit_err_count; + u32 post_bit_error_scale; + u32 pre_bit_err_count; + u32 pre_bit_count; + u32 pkt_count; + u32 pkt_error_count; + s32 cnr; if (state->m_DrxkState == DRXK_NO_DEV) return -ENODEV; if (state->m_DrxkState == DRXK_UNINITIALIZED) return -EAGAIN; - *status = 0; - GetLockStatus(state, &stat, 0); + /* get status */ + state->fe_status = 0; + GetLockStatus(state, &stat); if (stat == MPEG_LOCK) - *status |= 0x1f; + state->fe_status |= 0x1f; if (stat == FEC_LOCK) - *status |= 0x0f; + state->fe_status |= 0x0f; if (stat == DEMOD_LOCK) - *status |= 0x07; - return 0; + state->fe_status |= 0x07; + + /* + * Estimate signal strength from AGC + */ + get_strength(state, &c->strength.stat[0].uvalue); + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + + + if (stat >= DEMOD_LOCK) { + GetSignalToNoise(state, &cnr); + c->cnr.stat[0].svalue = cnr * 100; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + } else { + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + if (stat < FEC_LOCK) { + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + return 0; + } + + /* Get post BER */ + + /* BER measurement is valid if at least FEC lock is achieved */ + + /* OFDM_EC_VD_REQ_SMB_CNT__A and/or OFDM_EC_VD_REQ_BIT_CNT can be written + to set nr of symbols or bits over which + to measure EC_VD_REG_ERR_BIT_CNT__A . See CtrlSetCfg(). */ + + /* Read registers for post/preViterbi BER calculation */ + status = read16(state, OFDM_EC_VD_ERR_BIT_CNT__A, ®16); + if (status < 0) + goto error; + pre_bit_err_count = reg16; + + status = read16(state, OFDM_EC_VD_IN_BIT_CNT__A , ®16); + if (status < 0) + goto error; + pre_bit_count = reg16; + + /* Number of bit-errors */ + status = read16(state, FEC_RS_NR_BIT_ERRORS__A, ®16); + if (status < 0) + goto error; + post_bit_err_count = reg16; + + status = read16(state, FEC_RS_MEASUREMENT_PRESCALE__A, ®16); + if (status < 0) + goto error; + post_bit_error_scale = reg16; + + status = read16(state, FEC_RS_MEASUREMENT_PERIOD__A, ®16); + if (status < 0) + goto error; + pkt_count = reg16; + + status = read16(state, SCU_RAM_FEC_ACCUM_PKT_FAILURES__A, ®16); + if (status < 0) + goto error; + pkt_error_count = reg16; + write16(state, SCU_RAM_FEC_ACCUM_PKT_FAILURES__A, 0); + + post_bit_err_count *= post_bit_error_scale; + + post_bit_count = pkt_count * 204 * 8; + + /* Store the results */ + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += pkt_error_count; + c->block_count.stat[0].scale = FE_SCALE_COUNTER; + c->block_count.stat[0].uvalue += pkt_count; + + c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_error.stat[0].uvalue += pre_bit_err_count; + c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->pre_bit_count.stat[0].uvalue += pre_bit_count; + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += post_bit_err_count; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += post_bit_count; + +error: + return status; } -static int drxk_read_ber(struct dvb_frontend *fe, u32 *ber) + +static int drxk_read_status(struct dvb_frontend *fe, fe_status_t *status) { struct drxk_state *state = fe->demodulator_priv; + int rc; dprintk(1, "\n"); - if (state->m_DrxkState == DRXK_NO_DEV) - return -ENODEV; - if (state->m_DrxkState == DRXK_UNINITIALIZED) - return -EAGAIN; + rc = drxk_get_stats(fe); + if (rc < 0) + return rc; + + *status = state->fe_status; - *ber = 0; return 0; } @@ -6427,7 +6606,7 @@ static int drxk_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { struct drxk_state *state = fe->demodulator_priv; - u32 val = 0; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; dprintk(1, "\n"); @@ -6436,8 +6615,7 @@ static int drxk_read_signal_strength(struct dvb_frontend *fe, if (state->m_DrxkState == DRXK_UNINITIALIZED) return -EAGAIN; - ReadIFAgc(state, &val); - *strength = val & 0xffff; + *strength = c->strength.stat[0].uvalue; return 0; } @@ -6454,6 +6632,10 @@ static int drxk_read_snr(struct dvb_frontend *fe, u16 *snr) return -EAGAIN; GetSignalToNoise(state, &snr2); + + /* No negative SNR, clip to zero */ + if (snr2 < 0) + snr2 = 0; *snr = snr2 & 0xffff; return 0; } @@ -6529,7 +6711,6 @@ static struct dvb_frontend_ops drxk_ops = { .get_tune_settings = drxk_get_tune_settings, .read_status = drxk_read_status, - .read_ber = drxk_read_ber, .read_signal_strength = drxk_read_signal_strength, .read_snr = drxk_read_snr, .read_ucblocks = drxk_read_ucblocks, @@ -6538,6 +6719,7 @@ static struct dvb_frontend_ops drxk_ops = { struct dvb_frontend *drxk_attach(const struct drxk_config *config, struct i2c_adapter *i2c) { + struct dtv_frontend_properties *p; struct drxk_state *state = NULL; u8 adr = config->adr; int status; @@ -6618,6 +6800,27 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config, } else if (init_drxk(state) < 0) goto error; + + /* Initialize stats */ + p = &state->frontend.dtv_property_cache; + p->strength.len = 1; + p->cnr.len = 1; + p->block_error.len = 1; + p->block_count.len = 1; + p->pre_bit_error.len = 1; + p->pre_bit_count.len = 1; + p->post_bit_error.len = 1; + p->post_bit_count.len = 1; + + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + printk(KERN_INFO "drxk: frontend initialized.\n"); return &state->frontend; |