diff options
Diffstat (limited to 'drivers/media/dvb-frontends/dib8000.c')
| -rw-r--r-- | drivers/media/dvb-frontends/dib8000.c | 142 |
1 files changed, 141 insertions, 1 deletions
diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c index 13fdc3d5f762..2dbf89365a97 100644 --- a/drivers/media/dvb-frontends/dib8000.c +++ b/drivers/media/dvb-frontends/dib8000.c @@ -124,6 +124,8 @@ struct dib8000_state { u16 agc2_max; u16 agc2_min; #endif + + unsigned long get_stats_time; }; enum dib8000_power_mode { @@ -804,7 +806,7 @@ int dib8000_update_pll(struct dvb_frontend *fe, dprintk("PLL: Update ratio (prediv: %d, ratio: %d)", state->cfg.pll->pll_prediv, ratio); dib8000_write_word(state, 901, (state->cfg.pll->pll_prediv << 8) | (ratio << 0)); /* only the PLL ratio is updated. */ } -} + } return 0; } @@ -983,6 +985,32 @@ static u16 dib8000_identify(struct i2c_device *client) return value; } +static void dib8000_reset_stats(struct dvb_frontend *fe) +{ + struct dib8000_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache; + + memset(&c->strength, 0, sizeof(c->strength)); + memset(&c->cnr, 0, sizeof(c->cnr)); + memset(&c->post_bit_error, 0, sizeof(c->post_bit_error)); + memset(&c->post_bit_count, 0, sizeof(c->post_bit_count)); + memset(&c->block_error, 0, sizeof(c->block_error)); + + c->strength.len = 1; + c->cnr.len = 1; + c->block_error.len = 1; + c->post_bit_error.len = 1; + c->post_bit_count.len = 1; + + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + c->strength.stat[0].uvalue = 0; + + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.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; +} + static int dib8000_reset(struct dvb_frontend *fe) { struct dib8000_state *state = fe->demodulator_priv; @@ -1088,6 +1116,8 @@ static int dib8000_reset(struct dvb_frontend *fe) dib8000_set_power_mode(state, DIB8000_POWER_INTERFACE_ONLY); + dib8000_reset_stats(fe); + return 0; } @@ -2983,6 +3013,8 @@ static int dib8000_tune(struct dvb_frontend *fe) switch (*tune_state) { case CT_DEMOD_START: /* 30 */ + dib8000_reset_stats(fe); + if (state->revision == 0x8090) dib8090p_init_sdram(state); state->status = FE_STATUS_TUNE_PENDING; @@ -3654,6 +3686,8 @@ static int dib8000_set_frontend(struct dvb_frontend *fe) return 0; } +static int dib8000_get_stats(struct dvb_frontend *fe, fe_status_t stat); + static int dib8000_read_status(struct dvb_frontend *fe, fe_status_t * stat) { struct dib8000_state *state = fe->demodulator_priv; @@ -3691,6 +3725,7 @@ static int dib8000_read_status(struct dvb_frontend *fe, fe_status_t * stat) if (lock & 0x01) *stat |= FE_HAS_VITERBI; } + dib8000_get_stats(fe, *stat); return 0; } @@ -3797,6 +3832,111 @@ static int dib8000_read_snr(struct dvb_frontend *fe, u16 * snr) return 0; } +struct per_layer_regs { + u16 lock, ber, per; +}; + +static const struct per_layer_regs per_layer_regs[] = { + { 554, 560, 562 }, + { 555, 576, 578 }, + { 556, 581, 583 }, +}; + +static int dib8000_get_stats(struct dvb_frontend *fe, fe_status_t stat) +{ + struct dib8000_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache; + int i, lock; + u32 snr, val; + u16 strength; + + /* Get Signal strength */ + dib8000_read_signal_strength(fe, &strength); + c->strength.stat[0].uvalue = strength; + + /* Check if 1 second was elapsed */ + if (!time_after(jiffies, state->get_stats_time)) + return 0; + state->get_stats_time = jiffies + msecs_to_jiffies(1000); + + /* Get SNR */ + snr = dib8000_get_snr(fe); + for (i = 1; i < MAX_NUMBER_OF_FRONTENDS; i++) { + if (state->fe[i]) + snr += dib8000_get_snr(state->fe[i]); + } + snr = snr >> 16; + + if (snr) { + snr = 10 * intlog10(snr); + snr = (1000L * snr) >> 24; + } else { + snr = 0; + } + c->cnr.stat[0].svalue = snr; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + + /* UCB/BER measures require lock */ + if (!(stat & FE_HAS_LOCK)) { + c->block_error.len = 1; + c->post_bit_error.len = 1; + c->post_bit_count.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + return 0; + } + + /* Get UCB and post-BER measures */ + + /* FIXME: need to check if 1.25e6 bits already passed */ + dib8000_read_ber(fe, &val); + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += val; + + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += 100000000; + + /* + * FIXME: this is refreshed on every second, but a time + * drift between dib8000 and PC clock may cause troubles + */ + dib8000_read_unc_blocks(fe, &val); + + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += val; + + if (state->revision < 0x8002) + return 0; + + c->block_error.len = 4; + c->post_bit_error.len = 4; + c->post_bit_count.len = 4; + + for (i = 0; i < 3; i++) { + lock = dib8000_read_word(state, per_layer_regs[i].lock); + if (lock & 0x01) { + /* FIXME: need to check if 1.25e6 bits already passed */ + val = dib8000_read_word(state, per_layer_regs[i].ber); + c->post_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[1 + i].uvalue += val; + + c->post_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[1 + i].uvalue += 100000000; + + /* + * FIXME: this is refreshed on every second, but a time + * drift between dib8000 and PC clock may cause troubles + */ + val = dib8000_read_word(state, per_layer_regs[i].per); + + c->block_error.stat[1 + i].scale = FE_SCALE_COUNTER; + c->block_error.stat[1 + i].uvalue += val; + } + } + return 0; +} + int dib8000_set_slave_frontend(struct dvb_frontend *fe, struct dvb_frontend *fe_slave) { struct dib8000_state *state = fe->demodulator_priv; |