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[media] mn88473: add DVBv5 statistics support
Implement DVBv5 statistics support for DVB-T, DVB-T2 and DVB-C. All information was taken from the LinuxTV wiki, where Benjamin Larsson has documented all registers: https://www.linuxtv.org/wiki/index.php/Panasonic_MN88472 Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Martin Blumenstingl
Mauro Carvalho Chehab
parent
30f88a42b6
commit
61393b0732
@ -234,13 +234,388 @@ err:
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return ret;
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}
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static int mn88473_update_ber_stat_t_c(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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u64 total;
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unsigned int uitmp, value, errors;
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if (*status & FE_HAS_LOCK) {
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ret = regmap_read(dev->regmap[0], 0x5b, &value);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[0], 0xdf, &uitmp);
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if (ret)
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goto err;
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value &= uitmp;
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ret = regmap_write(dev->regmap[0], 0x5b, value);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[0], 0x60, &value);
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if (ret)
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goto err;
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value &= 0xf0;
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value |= 0x5;
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ret = regmap_write(dev->regmap[0], 0x60, value);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[0], 0x92, &uitmp);
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if (ret)
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goto err;
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errors = uitmp << 16;
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ret = regmap_read(dev->regmap[0], 0x93, &uitmp);
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if (ret)
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goto err;
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errors |= uitmp << 8;
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ret = regmap_read(dev->regmap[0], 0x94, &uitmp);
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if (ret)
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goto err;
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errors |= uitmp;
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ret = regmap_read(dev->regmap[0], 0x95, &uitmp);
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if (ret)
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goto err;
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total = uitmp << 8;
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ret = regmap_read(dev->regmap[0], 0x96, &uitmp);
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if (ret)
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goto err;
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total |= uitmp;
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/* probably: (bytes -> bit) * (sizeof(TS packet) - 1) */
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total *= 8 * 203;
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c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
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c->post_bit_error.stat[0].uvalue += errors;
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c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
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c->post_bit_count.stat[0].uvalue += total;
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} else {
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c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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return 0;
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err:
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dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_update_ber_stat_t2(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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u64 total;
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unsigned int uitmp, value, berlen, fec_type_m, errors;
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static u16 fec_type_m_tbl0[] = {
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32400, 38880, 43200, 48600, 51840, 54000, 0
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};
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static u16 fec_type_m_tbl1[] = {
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28800, 38880, 43200, 47520, 50400, 53280, 0
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};
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if (*status & FE_HAS_LOCK) {
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ret = regmap_read(dev->regmap[2], 0x82, &value);
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if (ret)
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goto err;
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value |= 0x20;
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value &= 0xef;
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ret = regmap_write(dev->regmap[2], 0x82, value);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[2], 0xba, &uitmp);
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if (ret)
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goto err;
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errors = uitmp << 16;
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ret = regmap_read(dev->regmap[2], 0xbb, &uitmp);
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if (ret)
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goto err;
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errors |= uitmp << 8;
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ret = regmap_read(dev->regmap[2], 0xbc, &uitmp);
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if (ret)
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goto err;
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errors |= uitmp;
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ret = regmap_read(dev->regmap[2], 0x83, &berlen);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap[2], 0xc0, 0x3);
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if (ret)
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goto err;
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/* berlen[4:2] are the index in fec_type_m_tbl */
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uitmp = (berlen >> 2) & 0x7;
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if (BIT(0) & berlen)
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fec_type_m = fec_type_m_tbl0[uitmp];
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else
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fec_type_m = fec_type_m_tbl1[uitmp];
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total = ((berlen & 0xff) << 1) * fec_type_m;
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c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
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c->post_bit_error.stat[0].uvalue += errors;
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c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
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c->post_bit_count.stat[0].uvalue += total;
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} else {
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c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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return 0;
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err:
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dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
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return ret;
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}
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static inline u32 log10times1000(u32 value)
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{
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return (1000L * intlog10(value)) >> 24;
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}
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static int mn88473_read_status_t(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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s32 cnr;
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unsigned int uitmp, tmp_upper, tmp_lower;
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ret = regmap_read(dev->regmap[0], 0x62, &uitmp);
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if (ret)
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goto err;
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if (!(uitmp & 0xa0)) {
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if ((uitmp & 0x0f) >= 0x09)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI | FE_HAS_SYNC |
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FE_HAS_LOCK;
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else if ((uitmp & 0x0f) >= 0x03)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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}
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/* CNR */
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if (*status & FE_HAS_VITERBI) {
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ret = regmap_read(dev->regmap[0], 0x8f, &tmp_upper);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[0], 0x90, &tmp_lower);
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if (ret)
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goto err;
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uitmp = (tmp_upper << 8) | tmp_lower;
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if (uitmp) {
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cnr = log10times1000(65536);
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cnr -= log10times1000(uitmp);
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cnr += 200;
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} else
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cnr = 0;
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if (cnr < 0)
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cnr = 0;
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c->cnr.stat[0].svalue = cnr * 10;
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c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
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} else {
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c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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/* BER */
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ret = mn88473_update_ber_stat_t_c(fe, status);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_read_status_t2(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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s32 cnr;
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unsigned int uitmp, tmp_upper, tmp_lower, flag;
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ret = regmap_read(dev->regmap[2], 0x8b, &uitmp);
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if (ret)
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goto err;
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if (!(uitmp & 0x40)) {
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if ((uitmp & 0x0f) >= 0x0d)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI | FE_HAS_SYNC |
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FE_HAS_LOCK;
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else if ((uitmp & 0x0f) >= 0x0a)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI;
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else if ((uitmp & 0x0f) >= 0x07)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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}
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/* CNR */
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if (*status & FE_HAS_VITERBI) {
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ret = regmap_read(dev->regmap[2], 0xb7, &flag);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[2], 0xb8, &tmp_upper);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[2], 0xb9, &tmp_lower);
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if (ret)
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goto err;
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uitmp = (tmp_upper << 8) | tmp_lower;
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if (uitmp) {
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if (flag & BIT(2)) {
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/* MISO */
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cnr = log10times1000(16384);
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cnr -= log10times1000(uitmp);
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cnr -= 600;
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} else {
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/* SISO */
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cnr = log10times1000(65536);
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cnr -= log10times1000(uitmp);
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cnr += 200;
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}
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} else
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cnr = 0;
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if (cnr < 0)
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cnr = 0;
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c->cnr.stat[0].svalue = cnr * 10;
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c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
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} else {
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c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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/* BER */
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ret = mn88473_update_ber_stat_t2(fe, status);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_read_status_c(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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unsigned int uitmp, tmp_upper, tmp_lower, signal, noise;
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ret = regmap_read(dev->regmap[1], 0x85, &uitmp);
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if (ret)
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goto err;
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if (!(uitmp & 0x40)) {
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ret = regmap_read(dev->regmap[1], 0x89, &uitmp);
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if (ret)
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goto err;
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if (uitmp & 0x01)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI | FE_HAS_SYNC |
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FE_HAS_LOCK;
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}
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/* CNR */
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if (*status & FE_HAS_VITERBI) {
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ret = regmap_read(dev->regmap[1], 0xa1, &tmp_upper);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[1], 0xa2, &tmp_lower);
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if (ret)
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goto err;
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signal = (tmp_upper << 8) | tmp_lower;
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ret = regmap_read(dev->regmap[1], 0xa3, &tmp_upper);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap[1], 0xa4, &tmp_lower);
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if (ret)
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goto err;
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noise = (tmp_upper << 8) | tmp_lower;
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if (noise)
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uitmp = log10times1000(signal * 8 / noise);
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else
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uitmp = 0;
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c->cnr.stat[0].svalue = uitmp * 10;
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c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
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} else {
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c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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/* BER */
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ret = mn88473_update_ber_stat_t_c(fe, status);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status)
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{
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struct i2c_client *client = fe->demodulator_priv;
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struct mn88473_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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unsigned int uitmp;
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u16 errors, per_len;
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unsigned int upper, lower;
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if (!dev->active) {
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ret = -EAGAIN;
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@ -251,60 +626,73 @@ static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status)
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switch (c->delivery_system) {
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case SYS_DVBT:
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ret = regmap_read(dev->regmap[0], 0x62, &uitmp);
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if (ret)
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goto err;
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if (!(uitmp & 0xa0)) {
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if ((uitmp & 0x0f) >= 0x09)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI | FE_HAS_SYNC |
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FE_HAS_LOCK;
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else if ((uitmp & 0x0f) >= 0x03)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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}
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ret = mn88473_read_status_t(fe, status);
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break;
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case SYS_DVBT2:
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ret = regmap_read(dev->regmap[2], 0x8b, &uitmp);
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if (ret)
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goto err;
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|
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if (!(uitmp & 0x40)) {
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if ((uitmp & 0x0f) >= 0x0d)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI | FE_HAS_SYNC |
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FE_HAS_LOCK;
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else if ((uitmp & 0x0f) >= 0x0a)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
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FE_HAS_VITERBI;
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else if ((uitmp & 0x0f) >= 0x07)
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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}
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ret = mn88473_read_status_t2(fe, status);
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break;
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case SYS_DVBC_ANNEX_A:
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ret = regmap_read(dev->regmap[1], 0x85, &uitmp);
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if (ret)
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goto err;
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|
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if (!(uitmp & 0x40)) {
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ret = regmap_read(dev->regmap[1], 0x89, &uitmp);
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if (ret)
|
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goto err;
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|
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if (uitmp & 0x01)
|
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
|
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FE_HAS_VITERBI | FE_HAS_SYNC |
|
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FE_HAS_LOCK;
|
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}
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ret = mn88473_read_status_c(fe, status);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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|
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if (ret)
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goto err;
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/* signal strength, derived from AGC */
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if (*status & FE_HAS_SIGNAL) {
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ret = regmap_read(dev->regmap[2], 0x86, &upper);
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if (ret)
|
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goto err;
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ret = regmap_read(dev->regmap[2], 0x87, &lower);
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if (ret)
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goto err;
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/* AGCRD[15:6] gives us a 10bit value ([5:0] are always 0) */
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c->strength.stat[0].scale = FE_SCALE_RELATIVE;
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c->strength.stat[0].uvalue = (upper << 8) | lower;
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} else {
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c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
}
|
||||
|
||||
/* PER */
|
||||
if (*status & FE_HAS_LOCK) {
|
||||
ret = regmap_read(dev->regmap[0], 0xdd, &upper);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
ret = regmap_read(dev->regmap[0], 0xde, &lower);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
errors = (upper << 8) | lower;
|
||||
|
||||
ret = regmap_read(dev->regmap[0], 0xdf, &upper);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
ret = regmap_read(dev->regmap[0], 0xe0, &lower);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
per_len = (upper << 8) | lower;
|
||||
|
||||
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
|
||||
c->block_error.stat[0].uvalue += errors;
|
||||
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
|
||||
c->block_count.stat[0].uvalue += per_len;
|
||||
} else {
|
||||
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
|
||||
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
|
||||
}
|
||||
|
||||
return 0;
|
||||
err:
|
||||
dev_dbg(&client->dev, "failed=%d\n", ret);
|
||||
dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -312,6 +700,7 @@ static int mn88473_init(struct dvb_frontend *fe)
|
||||
{
|
||||
struct i2c_client *client = fe->demodulator_priv;
|
||||
struct mn88473_dev *dev = i2c_get_clientdata(client);
|
||||
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
||||
int ret, len, remain;
|
||||
unsigned int uitmp;
|
||||
const struct firmware *fw;
|
||||
@ -378,6 +767,20 @@ warm:
|
||||
|
||||
dev->active = true;
|
||||
|
||||
/* init stats here to indicate which stats are supported */
|
||||
c->strength.len = 1;
|
||||
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
c->cnr.len = 1;
|
||||
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
c->post_bit_error.len = 1;
|
||||
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
c->post_bit_count.len = 1;
|
||||
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
c->block_error.len = 1;
|
||||
c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
c->block_count.len = 1;
|
||||
c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
||||
|
||||
return 0;
|
||||
err_release_firmware:
|
||||
release_firmware(fw);
|
||||
|
||||
@ -18,6 +18,7 @@
|
||||
#define MN88473_PRIV_H
|
||||
|
||||
#include "dvb_frontend.h"
|
||||
#include "dvb_math.h"
|
||||
#include "mn88473.h"
|
||||
#include <linux/firmware.h>
|
||||
#include <linux/regmap.h>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user