diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2820r_t2.c | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cxd2820r_t2.c b/drivers/media/dvb-frontends/cxd2820r_t2.c new file mode 100644 index 000000000..34ef2bb2d --- /dev/null +++ b/drivers/media/dvb-frontends/cxd2820r_t2.c @@ -0,0 +1,420 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Sony CXD2820R demodulator driver + * + * Copyright (C) 2010 Antti Palosaari <crope@iki.fi> + */ + + +#include "cxd2820r_priv.h" + +int cxd2820r_set_frontend_t2(struct dvb_frontend *fe) +{ + struct cxd2820r_priv *priv = fe->demodulator_priv; + struct i2c_client *client = priv->client[0]; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, bw_i; + unsigned int utmp; + u32 if_frequency; + u8 buf[3], bw_param; + u8 bw_params1[][5] = { + { 0x1c, 0xb3, 0x33, 0x33, 0x33 }, /* 5 MHz */ + { 0x17, 0xea, 0xaa, 0xaa, 0xaa }, /* 6 MHz */ + { 0x14, 0x80, 0x00, 0x00, 0x00 }, /* 7 MHz */ + { 0x11, 0xf0, 0x00, 0x00, 0x00 }, /* 8 MHz */ + }; + struct reg_val_mask tab[] = { + { 0x00080, 0x02, 0xff }, + { 0x00081, 0x20, 0xff }, + { 0x00085, 0x07, 0xff }, + { 0x00088, 0x01, 0xff }, + { 0x02069, 0x01, 0xff }, + + { 0x0207f, 0x2a, 0xff }, + { 0x02082, 0x0a, 0xff }, + { 0x02083, 0x0a, 0xff }, + { 0x020cb, priv->if_agc_polarity << 6, 0x40 }, + { 0x02070, priv->ts_mode, 0xff }, + { 0x02071, !priv->ts_clk_inv << 6, 0x40 }, + { 0x020b5, priv->spec_inv << 4, 0x10 }, + { 0x02567, 0x07, 0x0f }, + { 0x02569, 0x03, 0x03 }, + { 0x02595, 0x1a, 0xff }, + { 0x02596, 0x50, 0xff }, + { 0x02a8c, 0x00, 0xff }, + { 0x02a8d, 0x34, 0xff }, + { 0x02a45, 0x06, 0x07 }, + { 0x03f10, 0x0d, 0xff }, + { 0x03f11, 0x02, 0xff }, + { 0x03f12, 0x01, 0xff }, + { 0x03f23, 0x2c, 0xff }, + { 0x03f51, 0x13, 0xff }, + { 0x03f52, 0x01, 0xff }, + { 0x03f53, 0x00, 0xff }, + { 0x027e6, 0x14, 0xff }, + { 0x02786, 0x02, 0x07 }, + { 0x02787, 0x40, 0xe0 }, + { 0x027ef, 0x10, 0x18 }, + }; + + dev_dbg(&client->dev, + "delivery_system=%d modulation=%d frequency=%u bandwidth_hz=%u inversion=%d stream_id=%u\n", + c->delivery_system, c->modulation, c->frequency, + c->bandwidth_hz, c->inversion, c->stream_id); + + switch (c->bandwidth_hz) { + case 5000000: + bw_i = 0; + bw_param = 3; + break; + case 6000000: + bw_i = 1; + bw_param = 2; + break; + case 7000000: + bw_i = 2; + bw_param = 1; + break; + case 8000000: + bw_i = 3; + bw_param = 0; + break; + default: + return -EINVAL; + } + + /* program tuner */ + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + + if (priv->delivery_system != SYS_DVBT2) { + ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab)); + if (ret) + goto error; + } + + priv->delivery_system = SYS_DVBT2; + + /* program IF frequency */ + if (fe->ops.tuner_ops.get_if_frequency) { + ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); + if (ret) + goto error; + dev_dbg(&client->dev, "if_frequency=%u\n", if_frequency); + } else { + ret = -EINVAL; + goto error; + } + + utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, CXD2820R_CLK); + buf[0] = (utmp >> 16) & 0xff; + buf[1] = (utmp >> 8) & 0xff; + buf[2] = (utmp >> 0) & 0xff; + ret = regmap_bulk_write(priv->regmap[0], 0x20b6, buf, 3); + if (ret) + goto error; + + /* PLP filtering */ + if (c->stream_id > 255) { + dev_dbg(&client->dev, "disable PLP filtering\n"); + ret = regmap_write(priv->regmap[0], 0x23ad, 0x00); + if (ret) + goto error; + } else { + dev_dbg(&client->dev, "enable PLP filtering\n"); + ret = regmap_write(priv->regmap[0], 0x23af, c->stream_id & 0xff); + if (ret) + goto error; + ret = regmap_write(priv->regmap[0], 0x23ad, 0x01); + if (ret) + goto error; + } + + ret = regmap_bulk_write(priv->regmap[0], 0x209f, bw_params1[bw_i], 5); + if (ret) + goto error; + + ret = regmap_update_bits(priv->regmap[0], 0x20d7, 0xc0, bw_param << 6); + if (ret) + goto error; + + ret = regmap_write(priv->regmap[0], 0x00ff, 0x08); + if (ret) + goto error; + + ret = regmap_write(priv->regmap[0], 0x00fe, 0x01); + if (ret) + goto error; + + return ret; +error: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; + +} + +int cxd2820r_get_frontend_t2(struct dvb_frontend *fe, + struct dtv_frontend_properties *c) +{ + struct cxd2820r_priv *priv = fe->demodulator_priv; + struct i2c_client *client = priv->client[0]; + int ret; + unsigned int utmp; + u8 buf[2]; + + dev_dbg(&client->dev, "\n"); + + ret = regmap_bulk_read(priv->regmap[0], 0x205c, buf, 2); + if (ret) + goto error; + + switch ((buf[0] >> 0) & 0x07) { + case 0: + c->transmission_mode = TRANSMISSION_MODE_2K; + break; + case 1: + c->transmission_mode = TRANSMISSION_MODE_8K; + break; + case 2: + c->transmission_mode = TRANSMISSION_MODE_4K; + break; + case 3: + c->transmission_mode = TRANSMISSION_MODE_1K; + break; + case 4: + c->transmission_mode = TRANSMISSION_MODE_16K; + break; + case 5: + c->transmission_mode = TRANSMISSION_MODE_32K; + break; + } + + switch ((buf[1] >> 4) & 0x07) { + case 0: + c->guard_interval = GUARD_INTERVAL_1_32; + break; + case 1: + c->guard_interval = GUARD_INTERVAL_1_16; + break; + case 2: + c->guard_interval = GUARD_INTERVAL_1_8; + break; + case 3: + c->guard_interval = GUARD_INTERVAL_1_4; + break; + case 4: + c->guard_interval = GUARD_INTERVAL_1_128; + break; + case 5: + c->guard_interval = GUARD_INTERVAL_19_128; + break; + case 6: + c->guard_interval = GUARD_INTERVAL_19_256; + break; + } + + ret = regmap_bulk_read(priv->regmap[0], 0x225b, buf, 2); + if (ret) + goto error; + + switch ((buf[0] >> 0) & 0x07) { + case 0: + c->fec_inner = FEC_1_2; + break; + case 1: + c->fec_inner = FEC_3_5; + break; + case 2: + c->fec_inner = FEC_2_3; + break; + case 3: + c->fec_inner = FEC_3_4; + break; + case 4: + c->fec_inner = FEC_4_5; + break; + case 5: + c->fec_inner = FEC_5_6; + break; + } + + switch ((buf[1] >> 0) & 0x07) { + case 0: + c->modulation = QPSK; + break; + case 1: + c->modulation = QAM_16; + break; + case 2: + c->modulation = QAM_64; + break; + case 3: + c->modulation = QAM_256; + break; + } + + ret = regmap_read(priv->regmap[0], 0x20b5, &utmp); + if (ret) + goto error; + + switch ((utmp >> 4) & 0x01) { + case 0: + c->inversion = INVERSION_OFF; + break; + case 1: + c->inversion = INVERSION_ON; + break; + } + + return ret; +error: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +int cxd2820r_read_status_t2(struct dvb_frontend *fe, enum fe_status *status) +{ + struct cxd2820r_priv *priv = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct i2c_client *client = priv->client[0]; + int ret; + unsigned int utmp, utmp1, utmp2; + u8 buf[4]; + + /* Lock detection */ + ret = regmap_bulk_read(priv->regmap[0], 0x2010, &buf[0], 1); + if (ret) + goto error; + + utmp1 = (buf[0] >> 0) & 0x07; + utmp2 = (buf[0] >> 5) & 0x01; + + if (utmp1 == 6 && utmp2 == 1) { + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + } else if (utmp1 == 6 || utmp2 == 1) { + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC; + } else { + *status = 0; + } + + dev_dbg(&client->dev, "status=%02x raw=%*ph sync=%u ts=%u\n", + *status, 1, buf, utmp1, utmp2); + + /* Signal strength */ + if (*status & FE_HAS_SIGNAL) { + unsigned int strength; + + ret = regmap_bulk_read(priv->regmap[0], 0x2026, buf, 2); + if (ret) + goto error; + + utmp = buf[0] << 8 | buf[1] << 0; + utmp = ~utmp & 0x0fff; + /* Scale value to 0x0000-0xffff */ + strength = utmp << 4 | utmp >> 8; + + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + c->strength.stat[0].uvalue = strength; + } else { + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* CNR */ + if (*status & FE_HAS_VITERBI) { + unsigned int cnr; + + ret = regmap_bulk_read(priv->regmap[0], 0x2028, buf, 2); + if (ret) + goto error; + + utmp = buf[0] << 8 | buf[1] << 0; + utmp = utmp & 0x0fff; + #define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */ + if (utmp) + cnr = div_u64((u64)(intlog10(utmp) + - CXD2820R_LOG10_8_24) * 10000, + (1 << 24)); + else + cnr = 0; + + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = cnr; + } else { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* BER */ + if (*status & FE_HAS_SYNC) { + unsigned int post_bit_error; + + ret = regmap_bulk_read(priv->regmap[0], 0x2039, buf, 4); + if (ret) + goto error; + + if ((buf[0] >> 4) & 0x01) { + post_bit_error = buf[0] << 24 | buf[1] << 16 | + buf[2] << 8 | buf[3] << 0; + post_bit_error &= 0x0fffffff; + } else { + post_bit_error = 0; + } + + priv->post_bit_error += post_bit_error; + + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue = priv->post_bit_error; + } else { + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return ret; +error: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +int cxd2820r_sleep_t2(struct dvb_frontend *fe) +{ + struct cxd2820r_priv *priv = fe->demodulator_priv; + struct i2c_client *client = priv->client[0]; + int ret; + static const struct reg_val_mask tab[] = { + { 0x000ff, 0x1f, 0xff }, + { 0x00085, 0x00, 0xff }, + { 0x00088, 0x01, 0xff }, + { 0x02069, 0x00, 0xff }, + { 0x00081, 0x00, 0xff }, + { 0x00080, 0x00, 0xff }, + }; + + dev_dbg(&client->dev, "\n"); + + ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab)); + if (ret) + goto error; + + priv->delivery_system = SYS_UNDEFINED; + + return ret; +error: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +int cxd2820r_get_tune_settings_t2(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *s) +{ + s->min_delay_ms = 1500; + s->step_size = fe->ops.info.frequency_stepsize_hz * 2; + s->max_drift = (fe->ops.info.frequency_stepsize_hz * 2) + 1; + + return 0; +} |