From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx> Signed-off-by: Antti Palosaari <crope@xxxxxx> --- drivers/media/dvb-frontends/mn88473.c | 485 ++++++++++++++++++++++++++--- drivers/media/dvb-frontends/mn88473_priv.h | 1 + 2 files changed, 445 insertions(+), 41 deletions(-) diff --git a/drivers/media/dvb-frontends/mn88473.c b/drivers/media/dvb-frontends/mn88473.c index 451974a..c8dc9d3 100644 --- a/drivers/media/dvb-frontends/mn88473.c +++ b/drivers/media/dvb-frontends/mn88473.c @@ -234,13 +234,388 @@ static int mn88473_set_frontend(struct dvb_frontend *fe) return ret; } +static int mn88473_update_ber_stat_t_c(struct dvb_frontend *fe, + enum fe_status *status) +{ + 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; + u64 total; + unsigned int uitmp, value, errors; + + if (*status & FE_HAS_LOCK) { + ret = regmap_read(dev->regmap[0], 0x5b, &value); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[0], 0xdf, &uitmp); + if (ret) + goto err; + + value &= uitmp; + ret = regmap_write(dev->regmap[0], 0x5b, value); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[0], 0x60, &value); + if (ret) + goto err; + + value &= 0xf0; + value |= 0x5; + ret = regmap_write(dev->regmap[0], 0x60, value); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[0], 0x92, &uitmp); + if (ret) + goto err; + + errors = uitmp << 16; + + ret = regmap_read(dev->regmap[0], 0x93, &uitmp); + if (ret) + goto err; + + errors |= uitmp << 8; + + ret = regmap_read(dev->regmap[0], 0x94, &uitmp); + if (ret) + goto err; + + errors |= uitmp; + + ret = regmap_read(dev->regmap[0], 0x95, &uitmp); + if (ret) + goto err; + + total = uitmp << 8; + + ret = regmap_read(dev->regmap[0], 0x96, &uitmp); + if (ret) + goto err; + + total |= uitmp; + + /* probably: (bytes -> bit) * (sizeof(TS packet) - 1) */ + total *= 8 * 203; + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += errors; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += total; + } else { + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return 0; + +err: + dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret); + return ret; +} + +static int mn88473_update_ber_stat_t2(struct dvb_frontend *fe, + enum fe_status *status) +{ + 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; + u64 total; + unsigned int uitmp, value, berlen, fec_type_m, errors; + static u16 fec_type_m_tbl0[] = { + 32400, 38880, 43200, 48600, 51840, 54000, 0 + }; + static u16 fec_type_m_tbl1[] = { + 28800, 38880, 43200, 47520, 50400, 53280, 0 + }; + + if (*status & FE_HAS_LOCK) { + ret = regmap_read(dev->regmap[2], 0x82, &value); + if (ret) + goto err; + + value |= 0x20; + value &= 0xef; + ret = regmap_write(dev->regmap[2], 0x82, value); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[2], 0xba, &uitmp); + if (ret) + goto err; + + errors = uitmp << 16; + + ret = regmap_read(dev->regmap[2], 0xbb, &uitmp); + if (ret) + goto err; + + errors |= uitmp << 8; + + ret = regmap_read(dev->regmap[2], 0xbc, &uitmp); + if (ret) + goto err; + + errors |= uitmp; + + ret = regmap_read(dev->regmap[2], 0x83, &berlen); + if (ret) + goto err; + + ret = regmap_write(dev->regmap[2], 0xc0, 0x3); + if (ret) + goto err; + + /* berlen[4:2] are the index in fec_type_m_tbl */ + uitmp = (berlen >> 2) & 0x7; + + if (BIT(0) & berlen) + fec_type_m = fec_type_m_tbl0[uitmp]; + else + fec_type_m = fec_type_m_tbl1[uitmp]; + + total = ((berlen & 0xff) << 1) * fec_type_m; + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += errors; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += total; + } else { + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return 0; + +err: + dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret); + return ret; +} + +static inline u32 log10times1000(u32 value) +{ + return (1000L * intlog10(value)) >> 24; +} + +static int mn88473_read_status_t(struct dvb_frontend *fe, + enum fe_status *status) +{ + 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; + s32 cnr; + unsigned int uitmp, tmp_upper, tmp_lower; + + ret = regmap_read(dev->regmap[0], 0x62, &uitmp); + if (ret) + goto err; + + if (!(uitmp & 0xa0)) { + if ((uitmp & 0x0f) >= 0x09) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + else if ((uitmp & 0x0f) >= 0x03) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; + } + + /* CNR */ + if (*status & FE_HAS_VITERBI) { + ret = regmap_read(dev->regmap[0], 0x8f, &tmp_upper); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[0], 0x90, &tmp_lower); + if (ret) + goto err; + + uitmp = (tmp_upper << 8) | tmp_lower; + if (uitmp) { + cnr = log10times1000(65536); + cnr -= log10times1000(uitmp); + cnr += 200; + } else + cnr = 0; + + if (cnr < 0) + cnr = 0; + + c->cnr.stat[0].svalue = cnr * 10; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + } else { + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* BER */ + ret = mn88473_update_ber_stat_t_c(fe, status); + if (ret) + goto err; + + return 0; + +err: + dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret); + return ret; +} + +static int mn88473_read_status_t2(struct dvb_frontend *fe, + enum fe_status *status) +{ + 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; + s32 cnr; + unsigned int uitmp, tmp_upper, tmp_lower, flag; + + ret = regmap_read(dev->regmap[2], 0x8b, &uitmp); + if (ret) + goto err; + + if (!(uitmp & 0x40)) { + if ((uitmp & 0x0f) >= 0x0d) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + else if ((uitmp & 0x0f) >= 0x0a) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; + else if ((uitmp & 0x0f) >= 0x07) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; + } + + /* CNR */ + if (*status & FE_HAS_VITERBI) { + ret = regmap_read(dev->regmap[2], 0xb7, &flag); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[2], 0xb8, &tmp_upper); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[2], 0xb9, &tmp_lower); + if (ret) + goto err; + + uitmp = (tmp_upper << 8) | tmp_lower; + if (uitmp) { + if (flag & BIT(2)) { + /* MISO */ + cnr = log10times1000(16384); + cnr -= log10times1000(uitmp); + cnr -= 600; + } else { + /* SISO */ + cnr = log10times1000(65536); + cnr -= log10times1000(uitmp); + cnr += 200; + } + } else + cnr = 0; + + if (cnr < 0) + cnr = 0; + + c->cnr.stat[0].svalue = cnr * 10; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + } else { + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* BER */ + ret = mn88473_update_ber_stat_t2(fe, status); + if (ret) + goto err; + + return 0; + +err: + dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret); + return ret; +} + +static int mn88473_read_status_c(struct dvb_frontend *fe, + enum fe_status *status) +{ + 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; + unsigned int uitmp, tmp_upper, tmp_lower, signal, noise; + + ret = regmap_read(dev->regmap[1], 0x85, &uitmp); + if (ret) + goto err; + + if (!(uitmp & 0x40)) { + ret = regmap_read(dev->regmap[1], 0x89, &uitmp); + if (ret) + goto err; + + if (uitmp & 0x01) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + } + + /* CNR */ + if (*status & FE_HAS_VITERBI) { + ret = regmap_read(dev->regmap[1], 0xa1, &tmp_upper); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[1], 0xa2, &tmp_lower); + if (ret) + goto err; + + signal = (tmp_upper << 8) | tmp_lower; + + ret = regmap_read(dev->regmap[1], 0xa3, &tmp_upper); + if (ret) + goto err; + + ret = regmap_read(dev->regmap[1], 0xa4, &tmp_lower); + if (ret) + goto err; + + noise = (tmp_upper << 8) | tmp_lower; + if (noise) + uitmp = log10times1000(signal * 8 / noise); + else + uitmp = 0; + + c->cnr.stat[0].svalue = uitmp * 10; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + } else { + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* BER */ + ret = mn88473_update_ber_stat_t_c(fe, status); + if (ret) + goto err; + + return 0; + +err: + dev_dbg(&client->dev, "%s failed=%d\n", __func__, ret); + return ret; +} + static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status) { 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; - unsigned int uitmp; + u16 errors, per_len; + unsigned int upper, lower; if (!dev->active) { ret = -EAGAIN; @@ -251,60 +626,73 @@ static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status) switch (c->delivery_system) { case SYS_DVBT: - ret = regmap_read(dev->regmap[0], 0x62, &uitmp); + ret = mn88473_read_status_t(fe, status); + break; + case SYS_DVBT2: + ret = mn88473_read_status_t2(fe, status); + break; + case SYS_DVBC_ANNEX_A: + ret = mn88473_read_status_c(fe, status); + break; + default: + ret = -EINVAL; + break; + } + + if (ret) + goto err; + + /* signal strength, derived from AGC */ + if (*status & FE_HAS_SIGNAL) { + ret = regmap_read(dev->regmap[2], 0x86, &upper); if (ret) goto err; - if (!(uitmp & 0xa0)) { - if ((uitmp & 0x0f) >= 0x09) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI | FE_HAS_SYNC | - FE_HAS_LOCK; - else if ((uitmp & 0x0f) >= 0x03) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; - } - break; - case SYS_DVBT2: - ret = regmap_read(dev->regmap[2], 0x8b, &uitmp); + ret = regmap_read(dev->regmap[2], 0x87, &lower); if (ret) goto err; - if (!(uitmp & 0x40)) { - if ((uitmp & 0x0f) >= 0x0d) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI | FE_HAS_SYNC | - FE_HAS_LOCK; - else if ((uitmp & 0x0f) >= 0x0a) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI; - else if ((uitmp & 0x0f) >= 0x07) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; - } - break; - case SYS_DVBC_ANNEX_A: - ret = regmap_read(dev->regmap[1], 0x85, &uitmp); + /* AGCRD[15:6] gives us a 10bit value ([5:0] are always 0) */ + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + c->strength.stat[0].uvalue = (upper << 8) | lower; + } else { + 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; - if (!(uitmp & 0x40)) { - ret = regmap_read(dev->regmap[1], 0x89, &uitmp); - if (ret) - goto err; + ret = regmap_read(dev->regmap[0], 0xde, &lower); + if (ret) + goto err; - if (uitmp & 0x01) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI | FE_HAS_SYNC | - FE_HAS_LOCK; - } - break; - default: - ret = -EINVAL; - 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 @@ static int mn88473_init(struct dvb_frontend *fe) 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); diff --git a/drivers/media/dvb-frontends/mn88473_priv.h b/drivers/media/dvb-frontends/mn88473_priv.h index e6c6589..7cbef7b 100644 --- a/drivers/media/dvb-frontends/mn88473_priv.h +++ b/drivers/media/dvb-frontends/mn88473_priv.h @@ -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> -- http://palosaari.fi/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
