diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb-frontends/af9013.c | 1577 |
1 files changed, 1577 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c new file mode 100644 index 000000000..d85929582 --- /dev/null +++ b/drivers/media/dvb-frontends/af9013.c @@ -0,0 +1,1577 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Afatech AF9013 demodulator driver + * + * Copyright (C) 2007 Antti Palosaari <crope@iki.fi> + * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> + * + * Thanks to Afatech who kindly provided information. + */ + +#include "af9013_priv.h" + +struct af9013_state { + struct i2c_client *client; + struct regmap *regmap; + struct i2c_mux_core *muxc; + struct dvb_frontend fe; + u32 clk; + u8 tuner; + u32 if_frequency; + u8 ts_mode; + u8 ts_output_pin; + bool spec_inv; + u8 api_version[4]; + u8 gpio[4]; + + u32 bandwidth_hz; + enum fe_status fe_status; + /* RF and IF AGC limits used for signal strength calc */ + u8 strength_en, rf_agc_50, rf_agc_80, if_agc_50, if_agc_80; + unsigned long set_frontend_jiffies; + unsigned long read_status_jiffies; + unsigned long strength_jiffies; + unsigned long cnr_jiffies; + unsigned long ber_ucb_jiffies; + u16 dvbv3_snr; + u16 dvbv3_strength; + u32 dvbv3_ber; + u32 dvbv3_ucblocks; + bool first_tune; +}; + +static int af9013_set_gpio(struct af9013_state *state, u8 gpio, u8 gpioval) +{ + struct i2c_client *client = state->client; + int ret; + u8 pos; + u16 addr; + + dev_dbg(&client->dev, "gpio %u, gpioval %02x\n", gpio, gpioval); + + /* + * GPIO0 & GPIO1 0xd735 + * GPIO2 & GPIO3 0xd736 + */ + + switch (gpio) { + case 0: + case 1: + addr = 0xd735; + break; + case 2: + case 3: + addr = 0xd736; + break; + + default: + ret = -EINVAL; + goto err; + } + + switch (gpio) { + case 0: + case 2: + pos = 0; + break; + case 1: + case 3: + default: + pos = 4; + break; + } + + ret = regmap_update_bits(state->regmap, addr, 0x0f << pos, + gpioval << pos); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *fesettings) +{ + fesettings->min_delay_ms = 800; + fesettings->step_size = 0; + fesettings->max_drift = 0; + + return 0; +} + +static int af9013_set_frontend(struct dvb_frontend *fe) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i, sampling_freq; + bool auto_mode, spec_inv; + u8 buf[6]; + u32 if_frequency, freq_cw; + + dev_dbg(&client->dev, "frequency %u, bandwidth_hz %u\n", + c->frequency, c->bandwidth_hz); + + /* program tuner */ + if (fe->ops.tuner_ops.set_params) { + ret = fe->ops.tuner_ops.set_params(fe); + if (ret) + goto err; + } + + /* program CFOE coefficients */ + if (c->bandwidth_hz != state->bandwidth_hz) { + for (i = 0; i < ARRAY_SIZE(coeff_lut); i++) { + if (coeff_lut[i].clock == state->clk && + coeff_lut[i].bandwidth_hz == c->bandwidth_hz) { + break; + } + } + + /* Return an error if can't find bandwidth or the right clock */ + if (i == ARRAY_SIZE(coeff_lut)) { + ret = -EINVAL; + goto err; + } + + ret = regmap_bulk_write(state->regmap, 0xae00, coeff_lut[i].val, + sizeof(coeff_lut[i].val)); + if (ret) + goto err; + } + + /* program frequency control */ + if (c->bandwidth_hz != state->bandwidth_hz || state->first_tune) { + /* get used IF frequency */ + if (fe->ops.tuner_ops.get_if_frequency) { + ret = fe->ops.tuner_ops.get_if_frequency(fe, + &if_frequency); + if (ret) + goto err; + } else { + if_frequency = state->if_frequency; + } + + dev_dbg(&client->dev, "if_frequency %u\n", if_frequency); + + sampling_freq = if_frequency; + + while (sampling_freq > (state->clk / 2)) + sampling_freq -= state->clk; + + if (sampling_freq < 0) { + sampling_freq *= -1; + spec_inv = state->spec_inv; + } else { + spec_inv = !state->spec_inv; + } + + freq_cw = DIV_ROUND_CLOSEST_ULL((u64)sampling_freq * 0x800000, + state->clk); + + if (spec_inv) + freq_cw = 0x800000 - freq_cw; + + buf[0] = (freq_cw >> 0) & 0xff; + buf[1] = (freq_cw >> 8) & 0xff; + buf[2] = (freq_cw >> 16) & 0x7f; + + freq_cw = 0x800000 - freq_cw; + + buf[3] = (freq_cw >> 0) & 0xff; + buf[4] = (freq_cw >> 8) & 0xff; + buf[5] = (freq_cw >> 16) & 0x7f; + + ret = regmap_bulk_write(state->regmap, 0xd140, buf, 3); + if (ret) + goto err; + + ret = regmap_bulk_write(state->regmap, 0x9be7, buf, 6); + if (ret) + goto err; + } + + /* clear TPS lock flag */ + ret = regmap_update_bits(state->regmap, 0xd330, 0x08, 0x08); + if (ret) + goto err; + + /* clear MPEG2 lock flag */ + ret = regmap_update_bits(state->regmap, 0xd507, 0x40, 0x00); + if (ret) + goto err; + + /* empty channel function */ + ret = regmap_update_bits(state->regmap, 0x9bfe, 0x01, 0x00); + if (ret) + goto err; + + /* empty DVB-T channel function */ + ret = regmap_update_bits(state->regmap, 0x9bc2, 0x01, 0x00); + if (ret) + goto err; + + /* transmission parameters */ + auto_mode = false; + memset(buf, 0, 3); + + switch (c->transmission_mode) { + case TRANSMISSION_MODE_AUTO: + auto_mode = true; + break; + case TRANSMISSION_MODE_2K: + break; + case TRANSMISSION_MODE_8K: + buf[0] |= (1 << 0); + break; + default: + dev_dbg(&client->dev, "invalid transmission_mode\n"); + auto_mode = true; + } + + switch (c->guard_interval) { + case GUARD_INTERVAL_AUTO: + auto_mode = true; + break; + case GUARD_INTERVAL_1_32: + break; + case GUARD_INTERVAL_1_16: + buf[0] |= (1 << 2); + break; + case GUARD_INTERVAL_1_8: + buf[0] |= (2 << 2); + break; + case GUARD_INTERVAL_1_4: + buf[0] |= (3 << 2); + break; + default: + dev_dbg(&client->dev, "invalid guard_interval\n"); + auto_mode = true; + } + + switch (c->hierarchy) { + case HIERARCHY_AUTO: + auto_mode = true; + break; + case HIERARCHY_NONE: + break; + case HIERARCHY_1: + buf[0] |= (1 << 4); + break; + case HIERARCHY_2: + buf[0] |= (2 << 4); + break; + case HIERARCHY_4: + buf[0] |= (3 << 4); + break; + default: + dev_dbg(&client->dev, "invalid hierarchy\n"); + auto_mode = true; + } + + switch (c->modulation) { + case QAM_AUTO: + auto_mode = true; + break; + case QPSK: + break; + case QAM_16: + buf[1] |= (1 << 6); + break; + case QAM_64: + buf[1] |= (2 << 6); + break; + default: + dev_dbg(&client->dev, "invalid modulation\n"); + auto_mode = true; + } + + /* Use HP. How and which case we can switch to LP? */ + buf[1] |= (1 << 4); + + switch (c->code_rate_HP) { + case FEC_AUTO: + auto_mode = true; + break; + case FEC_1_2: + break; + case FEC_2_3: + buf[2] |= (1 << 0); + break; + case FEC_3_4: + buf[2] |= (2 << 0); + break; + case FEC_5_6: + buf[2] |= (3 << 0); + break; + case FEC_7_8: + buf[2] |= (4 << 0); + break; + default: + dev_dbg(&client->dev, "invalid code_rate_HP\n"); + auto_mode = true; + } + + switch (c->code_rate_LP) { + case FEC_AUTO: + auto_mode = true; + break; + case FEC_1_2: + break; + case FEC_2_3: + buf[2] |= (1 << 3); + break; + case FEC_3_4: + buf[2] |= (2 << 3); + break; + case FEC_5_6: + buf[2] |= (3 << 3); + break; + case FEC_7_8: + buf[2] |= (4 << 3); + break; + case FEC_NONE: + break; + default: + dev_dbg(&client->dev, "invalid code_rate_LP\n"); + auto_mode = true; + } + + switch (c->bandwidth_hz) { + case 6000000: + break; + case 7000000: + buf[1] |= (1 << 2); + break; + case 8000000: + buf[1] |= (2 << 2); + break; + default: + dev_dbg(&client->dev, "invalid bandwidth_hz\n"); + ret = -EINVAL; + goto err; + } + + ret = regmap_bulk_write(state->regmap, 0xd3c0, buf, 3); + if (ret) + goto err; + + if (auto_mode) { + /* clear easy mode flag */ + ret = regmap_write(state->regmap, 0xaefd, 0x00); + if (ret) + goto err; + + dev_dbg(&client->dev, "auto params\n"); + } else { + /* set easy mode flag */ + ret = regmap_write(state->regmap, 0xaefd, 0x01); + if (ret) + goto err; + + ret = regmap_write(state->regmap, 0xaefe, 0x00); + if (ret) + goto err; + + dev_dbg(&client->dev, "manual params\n"); + } + + /* Reset FSM */ + ret = regmap_write(state->regmap, 0xffff, 0x00); + if (ret) + goto err; + + state->bandwidth_hz = c->bandwidth_hz; + state->set_frontend_jiffies = jiffies; + state->first_tune = false; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *c) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + int ret; + u8 buf[3]; + + dev_dbg(&client->dev, "\n"); + + ret = regmap_bulk_read(state->regmap, 0xd3c0, buf, 3); + if (ret) + goto err; + + switch ((buf[1] >> 6) & 3) { + case 0: + c->modulation = QPSK; + break; + case 1: + c->modulation = QAM_16; + break; + case 2: + c->modulation = QAM_64; + break; + } + + switch ((buf[0] >> 0) & 3) { + case 0: + c->transmission_mode = TRANSMISSION_MODE_2K; + break; + case 1: + c->transmission_mode = TRANSMISSION_MODE_8K; + } + + switch ((buf[0] >> 2) & 3) { + 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; + } + + switch ((buf[0] >> 4) & 7) { + case 0: + c->hierarchy = HIERARCHY_NONE; + break; + case 1: + c->hierarchy = HIERARCHY_1; + break; + case 2: + c->hierarchy = HIERARCHY_2; + break; + case 3: + c->hierarchy = HIERARCHY_4; + break; + } + + switch ((buf[2] >> 0) & 7) { + case 0: + c->code_rate_HP = FEC_1_2; + break; + case 1: + c->code_rate_HP = FEC_2_3; + break; + case 2: + c->code_rate_HP = FEC_3_4; + break; + case 3: + c->code_rate_HP = FEC_5_6; + break; + case 4: + c->code_rate_HP = FEC_7_8; + break; + } + + switch ((buf[2] >> 3) & 7) { + case 0: + c->code_rate_LP = FEC_1_2; + break; + case 1: + c->code_rate_LP = FEC_2_3; + break; + case 2: + c->code_rate_LP = FEC_3_4; + break; + case 3: + c->code_rate_LP = FEC_5_6; + break; + case 4: + c->code_rate_LP = FEC_7_8; + break; + } + + switch ((buf[1] >> 2) & 3) { + case 0: + c->bandwidth_hz = 6000000; + break; + case 1: + c->bandwidth_hz = 7000000; + break; + case 2: + c->bandwidth_hz = 8000000; + break; + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, stmp1; + unsigned int utmp, utmp1, utmp2, utmp3, utmp4; + u8 buf[7]; + + dev_dbg(&client->dev, "\n"); + + /* + * Return status from the cache if it is younger than 2000ms with the + * exception of last tune is done during 4000ms. + */ + if (time_is_after_jiffies(state->read_status_jiffies + msecs_to_jiffies(2000)) && + time_is_before_jiffies(state->set_frontend_jiffies + msecs_to_jiffies(4000))) { + *status = state->fe_status; + } else { + /* MPEG2 lock */ + ret = regmap_read(state->regmap, 0xd507, &utmp); + if (ret) + goto err; + + if ((utmp >> 6) & 0x01) { + utmp1 = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + } else { + /* TPS lock */ + ret = regmap_read(state->regmap, 0xd330, &utmp); + if (ret) + goto err; + + if ((utmp >> 3) & 0x01) + utmp1 = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; + else + utmp1 = 0; + } + + dev_dbg(&client->dev, "fe_status %02x\n", utmp1); + + state->read_status_jiffies = jiffies; + + state->fe_status = utmp1; + *status = utmp1; + } + + /* Signal strength */ + switch (state->strength_en) { + case 0: + /* Check if we support signal strength */ + ret = regmap_read(state->regmap, 0x9bee, &utmp); + if (ret) + goto err; + + if ((utmp >> 0) & 0x01) { + /* Read agc values for signal strength estimation */ + ret = regmap_read(state->regmap, 0x9bbd, &utmp1); + if (ret) + goto err; + ret = regmap_read(state->regmap, 0x9bd0, &utmp2); + if (ret) + goto err; + ret = regmap_read(state->regmap, 0x9be2, &utmp3); + if (ret) + goto err; + ret = regmap_read(state->regmap, 0x9be4, &utmp4); + if (ret) + goto err; + + state->rf_agc_50 = utmp1; + state->rf_agc_80 = utmp2; + state->if_agc_50 = utmp3; + state->if_agc_80 = utmp4; + dev_dbg(&client->dev, + "rf_agc_50 %u, rf_agc_80 %u, if_agc_50 %u, if_agc_80 %u\n", + utmp1, utmp2, utmp3, utmp4); + + state->strength_en = 1; + } else { + /* Signal strength is not supported */ + state->strength_en = 2; + break; + } + fallthrough; + case 1: + if (time_is_after_jiffies(state->strength_jiffies + msecs_to_jiffies(2000))) + break; + + /* Read value */ + ret = regmap_bulk_read(state->regmap, 0xd07c, buf, 2); + if (ret) + goto err; + + /* + * Construct line equation from tuner dependent -80/-50 dBm agc + * limits and use it to map current agc value to dBm estimate + */ + #define agc_gain (buf[0] + buf[1]) + #define agc_gain_50dbm (state->rf_agc_50 + state->if_agc_50) + #define agc_gain_80dbm (state->rf_agc_80 + state->if_agc_80) + stmp1 = 30000 * (agc_gain - agc_gain_80dbm) / + (agc_gain_50dbm - agc_gain_80dbm) - 80000; + + dev_dbg(&client->dev, + "strength %d, agc_gain %d, agc_gain_50dbm %d, agc_gain_80dbm %d\n", + stmp1, agc_gain, agc_gain_50dbm, agc_gain_80dbm); + + state->strength_jiffies = jiffies; + /* Convert [-90, -30] dBm to [0x0000, 0xffff] for dvbv3 */ + utmp1 = clamp(stmp1 + 90000, 0, 60000); + state->dvbv3_strength = div_u64((u64)utmp1 * 0xffff, 60000); + + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + c->strength.stat[0].svalue = stmp1; + break; + default: + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + break; + } + + /* CNR */ + switch (state->fe_status & FE_HAS_VITERBI) { + case FE_HAS_VITERBI: + if (time_is_after_jiffies(state->cnr_jiffies + msecs_to_jiffies(2000))) + break; + + /* Check if cnr ready */ + ret = regmap_read(state->regmap, 0xd2e1, &utmp); + if (ret) + goto err; + + if (!((utmp >> 3) & 0x01)) { + dev_dbg(&client->dev, "cnr not ready\n"); + break; + } + + /* Read value */ + ret = regmap_bulk_read(state->regmap, 0xd2e3, buf, 3); + if (ret) + goto err; + + utmp1 = buf[2] << 16 | buf[1] << 8 | buf[0] << 0; + + /* Read current modulation */ + ret = regmap_read(state->regmap, 0xd3c1, &utmp); + if (ret) + goto err; + + switch ((utmp >> 6) & 3) { + case 0: + /* + * QPSK + * CNR[dB] 13 * -log10((1690000 - value) / value) + 2.6 + * value [653799, 1689999], 2.6 / 13 = 3355443 + */ + utmp1 = clamp(utmp1, 653799U, 1689999U); + utmp1 = ((u64)(intlog10(utmp1) + - intlog10(1690000 - utmp1) + + 3355443) * 13 * 1000) >> 24; + break; + case 1: + /* + * QAM-16 + * CNR[dB] 6 * log10((value - 370000) / (828000 - value)) + 15.7 + * value [371105, 827999], 15.7 / 6 = 43900382 + */ + utmp1 = clamp(utmp1, 371105U, 827999U); + utmp1 = ((u64)(intlog10(utmp1 - 370000) + - intlog10(828000 - utmp1) + + 43900382) * 6 * 1000) >> 24; + break; + case 2: + /* + * QAM-64 + * CNR[dB] 8 * log10((value - 193000) / (425000 - value)) + 23.8 + * value [193246, 424999], 23.8 / 8 = 49912218 + */ + utmp1 = clamp(utmp1, 193246U, 424999U); + utmp1 = ((u64)(intlog10(utmp1 - 193000) + - intlog10(425000 - utmp1) + + 49912218) * 8 * 1000) >> 24; + break; + default: + dev_dbg(&client->dev, "invalid modulation %u\n", + (utmp >> 6) & 3); + utmp1 = 0; + break; + } + + dev_dbg(&client->dev, "cnr %u\n", utmp1); + + state->cnr_jiffies = jiffies; + state->dvbv3_snr = utmp1 / 100; + + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = utmp1; + break; + default: + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + break; + } + + /* BER / PER */ + switch (state->fe_status & FE_HAS_SYNC) { + case FE_HAS_SYNC: + if (time_is_after_jiffies(state->ber_ucb_jiffies + msecs_to_jiffies(2000))) + break; + + /* Check if ber / ucb is ready */ + ret = regmap_read(state->regmap, 0xd391, &utmp); + if (ret) + goto err; + + if (!((utmp >> 4) & 0x01)) { + dev_dbg(&client->dev, "ber not ready\n"); + break; + } + + /* Read value */ + ret = regmap_bulk_read(state->regmap, 0xd385, buf, 7); + if (ret) + goto err; + + utmp1 = buf[4] << 16 | buf[3] << 8 | buf[2] << 0; + utmp2 = (buf[1] << 8 | buf[0] << 0) * 204 * 8; + utmp3 = buf[6] << 8 | buf[5] << 0; + utmp4 = buf[1] << 8 | buf[0] << 0; + + /* Use 10000 TS packets for measure */ + if (utmp4 != 10000) { + buf[0] = (10000 >> 0) & 0xff; + buf[1] = (10000 >> 8) & 0xff; + ret = regmap_bulk_write(state->regmap, 0xd385, buf, 2); + if (ret) + goto err; + } + + /* Reset ber / ucb counter */ + ret = regmap_update_bits(state->regmap, 0xd391, 0x20, 0x20); + if (ret) + goto err; + + dev_dbg(&client->dev, "post_bit_error %u, post_bit_count %u\n", + utmp1, utmp2); + dev_dbg(&client->dev, "block_error %u, block_count %u\n", + utmp3, utmp4); + + state->ber_ucb_jiffies = jiffies; + state->dvbv3_ber = utmp1; + state->dvbv3_ucblocks += utmp3; + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += utmp1; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += utmp2; + + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += utmp3; + c->block_count.stat[0].scale = FE_SCALE_COUNTER; + c->block_count.stat[0].uvalue += utmp4; + break; + default: + 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; + c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + break; + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct af9013_state *state = fe->demodulator_priv; + + *snr = state->dvbv3_snr; + + return 0; +} + +static int af9013_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct af9013_state *state = fe->demodulator_priv; + + *strength = state->dvbv3_strength; + + return 0; +} + +static int af9013_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct af9013_state *state = fe->demodulator_priv; + + *ber = state->dvbv3_ber; + + return 0; +} + +static int af9013_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct af9013_state *state = fe->demodulator_priv; + + *ucblocks = state->dvbv3_ucblocks; + + return 0; +} + +static int af9013_init(struct dvb_frontend *fe) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + int ret, i, len; + unsigned int utmp; + u8 buf[3]; + const struct af9013_reg_mask_val *tab; + + dev_dbg(&client->dev, "\n"); + + /* ADC on */ + ret = regmap_update_bits(state->regmap, 0xd73a, 0x08, 0x00); + if (ret) + goto err; + + /* Clear reset */ + ret = regmap_update_bits(state->regmap, 0xd417, 0x02, 0x00); + if (ret) + goto err; + + /* Disable reset */ + ret = regmap_update_bits(state->regmap, 0xd417, 0x10, 0x00); + if (ret) + goto err; + + /* write API version to firmware */ + ret = regmap_bulk_write(state->regmap, 0x9bf2, state->api_version, 4); + if (ret) + goto err; + + /* program ADC control */ + switch (state->clk) { + case 28800000: /* 28.800 MHz */ + utmp = 0; + break; + case 20480000: /* 20.480 MHz */ + utmp = 1; + break; + case 28000000: /* 28.000 MHz */ + utmp = 2; + break; + case 25000000: /* 25.000 MHz */ + utmp = 3; + break; + default: + ret = -EINVAL; + goto err; + } + + ret = regmap_update_bits(state->regmap, 0x9bd2, 0x0f, utmp); + if (ret) + goto err; + + utmp = div_u64((u64)state->clk * 0x80000, 1000000); + buf[0] = (utmp >> 0) & 0xff; + buf[1] = (utmp >> 8) & 0xff; + buf[2] = (utmp >> 16) & 0xff; + ret = regmap_bulk_write(state->regmap, 0xd180, buf, 3); + if (ret) + goto err; + + /* Demod core settings */ + dev_dbg(&client->dev, "load demod core settings\n"); + len = ARRAY_SIZE(demod_init_tab); + tab = demod_init_tab; + for (i = 0; i < len; i++) { + ret = regmap_update_bits(state->regmap, tab[i].reg, tab[i].mask, + tab[i].val); + if (ret) + goto err; + } + + /* Demod tuner specific settings */ + dev_dbg(&client->dev, "load tuner specific settings\n"); + switch (state->tuner) { + case AF9013_TUNER_MXL5003D: + len = ARRAY_SIZE(tuner_init_tab_mxl5003d); + tab = tuner_init_tab_mxl5003d; + break; + case AF9013_TUNER_MXL5005D: + case AF9013_TUNER_MXL5005R: + case AF9013_TUNER_MXL5007T: + len = ARRAY_SIZE(tuner_init_tab_mxl5005); + tab = tuner_init_tab_mxl5005; + break; + case AF9013_TUNER_ENV77H11D5: + len = ARRAY_SIZE(tuner_init_tab_env77h11d5); + tab = tuner_init_tab_env77h11d5; + break; + case AF9013_TUNER_MT2060: + len = ARRAY_SIZE(tuner_init_tab_mt2060); + tab = tuner_init_tab_mt2060; + break; + case AF9013_TUNER_MC44S803: + len = ARRAY_SIZE(tuner_init_tab_mc44s803); + tab = tuner_init_tab_mc44s803; + break; + case AF9013_TUNER_QT1010: + case AF9013_TUNER_QT1010A: + len = ARRAY_SIZE(tuner_init_tab_qt1010); + tab = tuner_init_tab_qt1010; + break; + case AF9013_TUNER_MT2060_2: + len = ARRAY_SIZE(tuner_init_tab_mt2060_2); + tab = tuner_init_tab_mt2060_2; + break; + case AF9013_TUNER_TDA18271: + case AF9013_TUNER_TDA18218: + len = ARRAY_SIZE(tuner_init_tab_tda18271); + tab = tuner_init_tab_tda18271; + break; + case AF9013_TUNER_UNKNOWN: + default: + len = ARRAY_SIZE(tuner_init_tab_unknown); + tab = tuner_init_tab_unknown; + break; + } + + for (i = 0; i < len; i++) { + ret = regmap_update_bits(state->regmap, tab[i].reg, tab[i].mask, + tab[i].val); + if (ret) + goto err; + } + + /* TS interface */ + if (state->ts_output_pin == 7) + utmp = 1 << 3 | state->ts_mode << 1; + else + utmp = 0 << 3 | state->ts_mode << 1; + ret = regmap_update_bits(state->regmap, 0xd500, 0x0e, utmp); + if (ret) + goto err; + + /* enable lock led */ + ret = regmap_update_bits(state->regmap, 0xd730, 0x01, 0x01); + if (ret) + goto err; + + state->first_tune = true; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_sleep(struct dvb_frontend *fe) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + int ret; + unsigned int utmp; + + dev_dbg(&client->dev, "\n"); + + /* disable lock led */ + ret = regmap_update_bits(state->regmap, 0xd730, 0x01, 0x00); + if (ret) + goto err; + + /* Enable reset */ + ret = regmap_update_bits(state->regmap, 0xd417, 0x10, 0x10); + if (ret) + goto err; + + /* Start reset execution */ + ret = regmap_write(state->regmap, 0xaeff, 0x01); + if (ret) + goto err; + + /* Wait reset performs */ + ret = regmap_read_poll_timeout(state->regmap, 0xd417, utmp, + (utmp >> 1) & 0x01, 5000, 1000000); + if (ret) + goto err; + + if (!((utmp >> 1) & 0x01)) { + ret = -ETIMEDOUT; + goto err; + } + + /* ADC off */ + ret = regmap_update_bits(state->regmap, 0xd73a, 0x08, 0x08); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static const struct dvb_frontend_ops af9013_ops; + +static int af9013_download_firmware(struct af9013_state *state) +{ + struct i2c_client *client = state->client; + int ret, i, len, rem; + unsigned int utmp; + u8 buf[4]; + u16 checksum = 0; + const struct firmware *firmware; + const char *name = AF9013_FIRMWARE; + + dev_dbg(&client->dev, "\n"); + + /* Check whether firmware is already running */ + ret = regmap_read(state->regmap, 0x98be, &utmp); + if (ret) + goto err; + + dev_dbg(&client->dev, "firmware status %02x\n", utmp); + + if (utmp == 0x0c) + return 0; + + dev_info(&client->dev, "found a '%s' in cold state, will try to load a firmware\n", + af9013_ops.info.name); + + /* Request the firmware, will block and timeout */ + ret = request_firmware(&firmware, name, &client->dev); + if (ret) { + dev_info(&client->dev, "firmware file '%s' not found %d\n", + name, ret); + goto err; + } + + dev_info(&client->dev, "downloading firmware from file '%s'\n", + name); + + /* Write firmware checksum & size */ + for (i = 0; i < firmware->size; i++) + checksum += firmware->data[i]; + + buf[0] = (checksum >> 8) & 0xff; + buf[1] = (checksum >> 0) & 0xff; + buf[2] = (firmware->size >> 8) & 0xff; + buf[3] = (firmware->size >> 0) & 0xff; + ret = regmap_bulk_write(state->regmap, 0x50fc, buf, 4); + if (ret) + goto err_release_firmware; + + /* Download firmware */ + #define LEN_MAX 16 + for (rem = firmware->size; rem > 0; rem -= LEN_MAX) { + len = min(LEN_MAX, rem); + ret = regmap_bulk_write(state->regmap, + 0x5100 + firmware->size - rem, + &firmware->data[firmware->size - rem], + len); + if (ret) { + dev_err(&client->dev, "firmware download failed %d\n", + ret); + goto err_release_firmware; + } + } + + release_firmware(firmware); + + /* Boot firmware */ + ret = regmap_write(state->regmap, 0xe205, 0x01); + if (ret) + goto err; + + /* Check firmware status. 0c=OK, 04=fail */ + ret = regmap_read_poll_timeout(state->regmap, 0x98be, utmp, + (utmp == 0x0c || utmp == 0x04), + 5000, 1000000); + if (ret) + goto err; + + dev_dbg(&client->dev, "firmware status %02x\n", utmp); + + if (utmp == 0x04) { + ret = -ENODEV; + dev_err(&client->dev, "firmware did not run\n"); + goto err; + } else if (utmp != 0x0c) { + ret = -ENODEV; + dev_err(&client->dev, "firmware boot timeout\n"); + goto err; + } + + dev_info(&client->dev, "found a '%s' in warm state\n", + af9013_ops.info.name); + + return 0; +err_release_firmware: + release_firmware(firmware); +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static const struct dvb_frontend_ops af9013_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "Afatech AF9013", + .frequency_min_hz = 174 * MHz, + .frequency_max_hz = 862 * MHz, + .frequency_stepsize_hz = 250 * kHz, + .caps = FE_CAN_FEC_1_2 | + FE_CAN_FEC_2_3 | + FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | + FE_CAN_FEC_7_8 | + FE_CAN_FEC_AUTO | + FE_CAN_QPSK | + FE_CAN_QAM_16 | + FE_CAN_QAM_64 | + FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO | + FE_CAN_RECOVER | + FE_CAN_MUTE_TS + }, + + .init = af9013_init, + .sleep = af9013_sleep, + + .get_tune_settings = af9013_get_tune_settings, + .set_frontend = af9013_set_frontend, + .get_frontend = af9013_get_frontend, + + .read_status = af9013_read_status, + .read_snr = af9013_read_snr, + .read_signal_strength = af9013_read_signal_strength, + .read_ber = af9013_read_ber, + .read_ucblocks = af9013_read_ucblocks, +}; + +static int af9013_pid_filter_ctrl(struct dvb_frontend *fe, int onoff) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + int ret; + + dev_dbg(&client->dev, "onoff %d\n", onoff); + + ret = regmap_update_bits(state->regmap, 0xd503, 0x01, onoff); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid, + int onoff) +{ + struct af9013_state *state = fe->demodulator_priv; + struct i2c_client *client = state->client; + int ret; + u8 buf[2]; + + dev_dbg(&client->dev, "index %d, pid %04x, onoff %d\n", + index, pid, onoff); + + if (pid > 0x1fff) { + /* 0x2000 is kernel virtual pid for whole ts (all pids) */ + ret = 0; + goto err; + } + + buf[0] = (pid >> 0) & 0xff; + buf[1] = (pid >> 8) & 0xff; + ret = regmap_bulk_write(state->regmap, 0xd505, buf, 2); + if (ret) + goto err; + ret = regmap_write(state->regmap, 0xd504, onoff << 5 | index << 0); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static struct dvb_frontend *af9013_get_dvb_frontend(struct i2c_client *client) +{ + struct af9013_state *state = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + return &state->fe; +} + +static struct i2c_adapter *af9013_get_i2c_adapter(struct i2c_client *client) +{ + struct af9013_state *state = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + return state->muxc->adapter[0]; +} + +/* + * XXX: Hackish solution. We use virtual register, reg bit 16, to carry info + * about i2c adapter locking. Own locking is needed because i2c mux call has + * already locked i2c adapter. + */ +static int af9013_select(struct i2c_mux_core *muxc, u32 chan) +{ + struct af9013_state *state = i2c_mux_priv(muxc); + struct i2c_client *client = state->client; + int ret; + + dev_dbg(&client->dev, "\n"); + + if (state->ts_mode == AF9013_TS_MODE_USB) + ret = regmap_update_bits(state->regmap, 0x1d417, 0x08, 0x08); + else + ret = regmap_update_bits(state->regmap, 0x1d607, 0x04, 0x04); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_deselect(struct i2c_mux_core *muxc, u32 chan) +{ + struct af9013_state *state = i2c_mux_priv(muxc); + struct i2c_client *client = state->client; + int ret; + + dev_dbg(&client->dev, "\n"); + + if (state->ts_mode == AF9013_TS_MODE_USB) + ret = regmap_update_bits(state->regmap, 0x1d417, 0x08, 0x00); + else + ret = regmap_update_bits(state->regmap, 0x1d607, 0x04, 0x00); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +/* Own I2C access routines needed for regmap as chip uses extra command byte */ +static int af9013_wregs(struct i2c_client *client, u8 cmd, u16 reg, + const u8 *val, int len, u8 lock) +{ + int ret; + u8 buf[21]; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = 3 + len, + .buf = buf, + } + }; + + if (3 + len > sizeof(buf)) { + ret = -EINVAL; + goto err; + } + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + buf[2] = cmd; + memcpy(&buf[3], val, len); + + if (lock) + i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT); + ret = __i2c_transfer(client->adapter, msg, 1); + if (lock) + i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT); + if (ret < 0) { + goto err; + } else if (ret != 1) { + ret = -EREMOTEIO; + goto err; + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_rregs(struct i2c_client *client, u8 cmd, u16 reg, + u8 *val, int len, u8 lock) +{ + int ret; + u8 buf[3]; + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = 0, + .len = 3, + .buf = buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = val, + } + }; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + buf[2] = cmd; + + if (lock) + i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT); + ret = __i2c_transfer(client->adapter, msg, 2); + if (lock) + i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT); + if (ret < 0) { + goto err; + } else if (ret != 2) { + ret = -EREMOTEIO; + goto err; + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_regmap_write(void *context, const void *data, size_t count) +{ + struct i2c_client *client = context; + struct af9013_state *state = i2c_get_clientdata(client); + int ret, i; + u8 cmd; + u8 lock = !((u8 *)data)[0]; + u16 reg = ((u8 *)data)[1] << 8 | ((u8 *)data)[2] << 0; + u8 *val = &((u8 *)data)[3]; + const unsigned int len = count - 3; + + if (state->ts_mode == AF9013_TS_MODE_USB && (reg & 0xff00) != 0xae00) { + cmd = 0 << 7|0 << 6|(len - 1) << 2|1 << 1|1 << 0; + ret = af9013_wregs(client, cmd, reg, val, len, lock); + if (ret) + goto err; + } else if (reg >= 0x5100 && reg < 0x8fff) { + /* Firmware download */ + cmd = 1 << 7|1 << 6|(len - 1) << 2|1 << 1|1 << 0; + ret = af9013_wregs(client, cmd, reg, val, len, lock); + if (ret) + goto err; + } else { + cmd = 0 << 7|0 << 6|(1 - 1) << 2|1 << 1|1 << 0; + for (i = 0; i < len; i++) { + ret = af9013_wregs(client, cmd, reg + i, val + i, 1, + lock); + if (ret) + goto err; + } + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_regmap_read(void *context, const void *reg_buf, + size_t reg_size, void *val_buf, size_t val_size) +{ + struct i2c_client *client = context; + struct af9013_state *state = i2c_get_clientdata(client); + int ret, i; + u8 cmd; + u8 lock = !((u8 *)reg_buf)[0]; + u16 reg = ((u8 *)reg_buf)[1] << 8 | ((u8 *)reg_buf)[2] << 0; + u8 *val = &((u8 *)val_buf)[0]; + const unsigned int len = val_size; + + if (state->ts_mode == AF9013_TS_MODE_USB && (reg & 0xff00) != 0xae00) { + cmd = 0 << 7|0 << 6|(len - 1) << 2|1 << 1|0 << 0; + ret = af9013_rregs(client, cmd, reg, val_buf, len, lock); + if (ret) + goto err; + } else { + cmd = 0 << 7|0 << 6|(1 - 1) << 2|1 << 1|0 << 0; + for (i = 0; i < len; i++) { + ret = af9013_rregs(client, cmd, reg + i, val + i, 1, + lock); + if (ret) + goto err; + } + } + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static int af9013_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct af9013_state *state; + struct af9013_platform_data *pdata = client->dev.platform_data; + struct dtv_frontend_properties *c; + int ret, i; + u8 firmware_version[4]; + static const struct regmap_bus regmap_bus = { + .read = af9013_regmap_read, + .write = af9013_regmap_write, + }; + static const struct regmap_config regmap_config = { + /* Actual reg is 16 bits, see i2c adapter lock */ + .reg_bits = 24, + .val_bits = 8, + }; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) { + ret = -ENOMEM; + goto err; + } + + dev_dbg(&client->dev, "\n"); + + /* Setup the state */ + state->client = client; + i2c_set_clientdata(client, state); + state->clk = pdata->clk; + state->tuner = pdata->tuner; + state->if_frequency = pdata->if_frequency; + state->ts_mode = pdata->ts_mode; + state->ts_output_pin = pdata->ts_output_pin; + state->spec_inv = pdata->spec_inv; + memcpy(&state->api_version, pdata->api_version, sizeof(state->api_version)); + memcpy(&state->gpio, pdata->gpio, sizeof(state->gpio)); + state->regmap = regmap_init(&client->dev, ®map_bus, client, + ®map_config); + if (IS_ERR(state->regmap)) { + ret = PTR_ERR(state->regmap); + goto err_kfree; + } + /* Create mux i2c adapter */ + state->muxc = i2c_mux_alloc(client->adapter, &client->dev, 1, 0, 0, + af9013_select, af9013_deselect); + if (!state->muxc) { + ret = -ENOMEM; + goto err_regmap_exit; + } + state->muxc->priv = state; + ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0); + if (ret) + goto err_regmap_exit; + + /* Download firmware */ + if (state->ts_mode != AF9013_TS_MODE_USB) { + ret = af9013_download_firmware(state); + if (ret) + goto err_i2c_mux_del_adapters; + } + + /* Firmware version */ + ret = regmap_bulk_read(state->regmap, 0x5103, firmware_version, + sizeof(firmware_version)); + if (ret) + goto err_i2c_mux_del_adapters; + + /* Set GPIOs */ + for (i = 0; i < sizeof(state->gpio); i++) { + ret = af9013_set_gpio(state, i, state->gpio[i]); + if (ret) + goto err_i2c_mux_del_adapters; + } + + /* Create dvb frontend */ + memcpy(&state->fe.ops, &af9013_ops, sizeof(state->fe.ops)); + state->fe.demodulator_priv = state; + + /* Setup callbacks */ + pdata->get_dvb_frontend = af9013_get_dvb_frontend; + pdata->get_i2c_adapter = af9013_get_i2c_adapter; + pdata->pid_filter = af9013_pid_filter; + pdata->pid_filter_ctrl = af9013_pid_filter_ctrl; + + /* Init stats to indicate which stats are supported */ + c = &state->fe.dtv_property_cache; + c->strength.len = 1; + c->cnr.len = 1; + c->post_bit_error.len = 1; + c->post_bit_count.len = 1; + c->block_error.len = 1; + c->block_count.len = 1; + + dev_info(&client->dev, "Afatech AF9013 successfully attached\n"); + dev_info(&client->dev, "firmware version: %d.%d.%d.%d\n", + firmware_version[0], firmware_version[1], + firmware_version[2], firmware_version[3]); + return 0; +err_i2c_mux_del_adapters: + i2c_mux_del_adapters(state->muxc); +err_regmap_exit: + regmap_exit(state->regmap); +err_kfree: + kfree(state); +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return ret; +} + +static void af9013_remove(struct i2c_client *client) +{ + struct af9013_state *state = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + i2c_mux_del_adapters(state->muxc); + + regmap_exit(state->regmap); + + kfree(state); +} + +static const struct i2c_device_id af9013_id_table[] = { + {"af9013", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, af9013_id_table); + +static struct i2c_driver af9013_driver = { + .driver = { + .name = "af9013", + .suppress_bind_attrs = true, + }, + .probe = af9013_probe, + .remove = af9013_remove, + .id_table = af9013_id_table, +}; + +module_i2c_driver(af9013_driver); + +MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); +MODULE_DESCRIPTION("Afatech AF9013 DVB-T demodulator driver"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE(AF9013_FIRMWARE); |