diff options
Diffstat (limited to 'kernel/drivers/media/dvb-frontends/af9033.c')
| -rw-r--r-- | kernel/drivers/media/dvb-frontends/af9033.c | 1402 |
1 files changed, 1402 insertions, 0 deletions
diff --git a/kernel/drivers/media/dvb-frontends/af9033.c b/kernel/drivers/media/dvb-frontends/af9033.c new file mode 100644 index 000000000..82ce47bdf --- /dev/null +++ b/kernel/drivers/media/dvb-frontends/af9033.c @@ -0,0 +1,1402 @@ +/* + * Afatech AF9033 demodulator driver + * + * Copyright (C) 2009 Antti Palosaari <crope@iki.fi> + * Copyright (C) 2012 Antti Palosaari <crope@iki.fi> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "af9033_priv.h" + +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 64 + +struct af9033_dev { + struct i2c_client *client; + struct dvb_frontend fe; + struct af9033_config cfg; + bool is_af9035; + bool is_it9135; + + u32 bandwidth_hz; + bool ts_mode_parallel; + bool ts_mode_serial; + + fe_status_t fe_status; + u64 post_bit_error_prev; /* for old read_ber we return (curr - prev) */ + u64 post_bit_error; + u64 post_bit_count; + u64 error_block_count; + u64 total_block_count; + struct delayed_work stat_work; +}; + +/* write multiple registers */ +static int af9033_wr_regs(struct af9033_dev *dev, u32 reg, const u8 *val, + int len) +{ + int ret; + u8 buf[MAX_XFER_SIZE]; + struct i2c_msg msg[1] = { + { + .addr = dev->client->addr, + .flags = 0, + .len = 3 + len, + .buf = buf, + } + }; + + if (3 + len > sizeof(buf)) { + dev_warn(&dev->client->dev, + "i2c wr reg=%04x: len=%d is too big!\n", + reg, len); + return -EINVAL; + } + + buf[0] = (reg >> 16) & 0xff; + buf[1] = (reg >> 8) & 0xff; + buf[2] = (reg >> 0) & 0xff; + memcpy(&buf[3], val, len); + + ret = i2c_transfer(dev->client->adapter, msg, 1); + if (ret == 1) { + ret = 0; + } else { + dev_warn(&dev->client->dev, "i2c wr failed=%d reg=%06x len=%d\n", + ret, reg, len); + ret = -EREMOTEIO; + } + + return ret; +} + +/* read multiple registers */ +static int af9033_rd_regs(struct af9033_dev *dev, u32 reg, u8 *val, int len) +{ + int ret; + u8 buf[3] = { (reg >> 16) & 0xff, (reg >> 8) & 0xff, + (reg >> 0) & 0xff }; + struct i2c_msg msg[2] = { + { + .addr = dev->client->addr, + .flags = 0, + .len = sizeof(buf), + .buf = buf + }, { + .addr = dev->client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = val + } + }; + + ret = i2c_transfer(dev->client->adapter, msg, 2); + if (ret == 2) { + ret = 0; + } else { + dev_warn(&dev->client->dev, "i2c rd failed=%d reg=%06x len=%d\n", + ret, reg, len); + ret = -EREMOTEIO; + } + + return ret; +} + + +/* write single register */ +static int af9033_wr_reg(struct af9033_dev *dev, u32 reg, u8 val) +{ + return af9033_wr_regs(dev, reg, &val, 1); +} + +/* read single register */ +static int af9033_rd_reg(struct af9033_dev *dev, u32 reg, u8 *val) +{ + return af9033_rd_regs(dev, reg, val, 1); +} + +/* write single register with mask */ +static int af9033_wr_reg_mask(struct af9033_dev *dev, u32 reg, u8 val, + u8 mask) +{ + int ret; + u8 tmp; + + /* no need for read if whole reg is written */ + if (mask != 0xff) { + ret = af9033_rd_regs(dev, reg, &tmp, 1); + if (ret) + return ret; + + val &= mask; + tmp &= ~mask; + val |= tmp; + } + + return af9033_wr_regs(dev, reg, &val, 1); +} + +/* read single register with mask */ +static int af9033_rd_reg_mask(struct af9033_dev *dev, u32 reg, u8 *val, + u8 mask) +{ + int ret, i; + u8 tmp; + + ret = af9033_rd_regs(dev, reg, &tmp, 1); + if (ret) + return ret; + + tmp &= mask; + + /* find position of the first bit */ + for (i = 0; i < 8; i++) { + if ((mask >> i) & 0x01) + break; + } + *val = tmp >> i; + + return 0; +} + +/* write reg val table using reg addr auto increment */ +static int af9033_wr_reg_val_tab(struct af9033_dev *dev, + const struct reg_val *tab, int tab_len) +{ +#define MAX_TAB_LEN 212 + int ret, i, j; + u8 buf[1 + MAX_TAB_LEN]; + + dev_dbg(&dev->client->dev, "tab_len=%d\n", tab_len); + + if (tab_len > sizeof(buf)) { + dev_warn(&dev->client->dev, "tab len %d is too big\n", tab_len); + return -EINVAL; + } + + for (i = 0, j = 0; i < tab_len; i++) { + buf[j] = tab[i].val; + + if (i == tab_len - 1 || tab[i].reg != tab[i + 1].reg - 1) { + ret = af9033_wr_regs(dev, tab[i].reg - j, buf, j + 1); + if (ret < 0) + goto err; + + j = 0; + } else { + j++; + } + } + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static u32 af9033_div(struct af9033_dev *dev, u32 a, u32 b, u32 x) +{ + u32 r = 0, c = 0, i; + + dev_dbg(&dev->client->dev, "a=%d b=%d x=%d\n", a, b, x); + + if (a > b) { + c = a / b; + a = a - c * b; + } + + for (i = 0; i < x; i++) { + if (a >= b) { + r += 1; + a -= b; + } + a <<= 1; + r <<= 1; + } + r = (c << (u32)x) + r; + + dev_dbg(&dev->client->dev, "a=%d b=%d x=%d r=%d r=%x\n", a, b, x, r, r); + + return r; +} + +static int af9033_init(struct dvb_frontend *fe) +{ + struct af9033_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i, len; + const struct reg_val *init; + u8 buf[4]; + u32 adc_cw, clock_cw; + struct reg_val_mask tab[] = { + { 0x80fb24, 0x00, 0x08 }, + { 0x80004c, 0x00, 0xff }, + { 0x00f641, dev->cfg.tuner, 0xff }, + { 0x80f5ca, 0x01, 0x01 }, + { 0x80f715, 0x01, 0x01 }, + { 0x00f41f, 0x04, 0x04 }, + { 0x00f41a, 0x01, 0x01 }, + { 0x80f731, 0x00, 0x01 }, + { 0x00d91e, 0x00, 0x01 }, + { 0x00d919, 0x00, 0x01 }, + { 0x80f732, 0x00, 0x01 }, + { 0x00d91f, 0x00, 0x01 }, + { 0x00d91a, 0x00, 0x01 }, + { 0x80f730, 0x00, 0x01 }, + { 0x80f778, 0x00, 0xff }, + { 0x80f73c, 0x01, 0x01 }, + { 0x80f776, 0x00, 0x01 }, + { 0x00d8fd, 0x01, 0xff }, + { 0x00d830, 0x01, 0xff }, + { 0x00d831, 0x00, 0xff }, + { 0x00d832, 0x00, 0xff }, + { 0x80f985, dev->ts_mode_serial, 0x01 }, + { 0x80f986, dev->ts_mode_parallel, 0x01 }, + { 0x00d827, 0x00, 0xff }, + { 0x00d829, 0x00, 0xff }, + { 0x800045, dev->cfg.adc_multiplier, 0xff }, + }; + + /* program clock control */ + clock_cw = af9033_div(dev, dev->cfg.clock, 1000000ul, 19ul); + buf[0] = (clock_cw >> 0) & 0xff; + buf[1] = (clock_cw >> 8) & 0xff; + buf[2] = (clock_cw >> 16) & 0xff; + buf[3] = (clock_cw >> 24) & 0xff; + + dev_dbg(&dev->client->dev, "clock=%d clock_cw=%08x\n", + dev->cfg.clock, clock_cw); + + ret = af9033_wr_regs(dev, 0x800025, buf, 4); + if (ret < 0) + goto err; + + /* program ADC control */ + for (i = 0; i < ARRAY_SIZE(clock_adc_lut); i++) { + if (clock_adc_lut[i].clock == dev->cfg.clock) + break; + } + if (i == ARRAY_SIZE(clock_adc_lut)) { + dev_err(&dev->client->dev, + "Couldn't find ADC config for clock=%d\n", + dev->cfg.clock); + goto err; + } + + adc_cw = af9033_div(dev, clock_adc_lut[i].adc, 1000000ul, 19ul); + buf[0] = (adc_cw >> 0) & 0xff; + buf[1] = (adc_cw >> 8) & 0xff; + buf[2] = (adc_cw >> 16) & 0xff; + + dev_dbg(&dev->client->dev, "adc=%d adc_cw=%06x\n", + clock_adc_lut[i].adc, adc_cw); + + ret = af9033_wr_regs(dev, 0x80f1cd, buf, 3); + if (ret < 0) + goto err; + + /* program register table */ + for (i = 0; i < ARRAY_SIZE(tab); i++) { + ret = af9033_wr_reg_mask(dev, tab[i].reg, tab[i].val, + tab[i].mask); + if (ret < 0) + goto err; + } + + /* clock output */ + if (dev->cfg.dyn0_clk) { + ret = af9033_wr_reg(dev, 0x80fba8, 0x00); + if (ret < 0) + goto err; + } + + /* settings for TS interface */ + if (dev->cfg.ts_mode == AF9033_TS_MODE_USB) { + ret = af9033_wr_reg_mask(dev, 0x80f9a5, 0x00, 0x01); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x80f9b5, 0x01, 0x01); + if (ret < 0) + goto err; + } else { + ret = af9033_wr_reg_mask(dev, 0x80f990, 0x00, 0x01); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x80f9b5, 0x00, 0x01); + if (ret < 0) + goto err; + } + + /* load OFSM settings */ + dev_dbg(&dev->client->dev, "load ofsm settings\n"); + switch (dev->cfg.tuner) { + case AF9033_TUNER_IT9135_38: + case AF9033_TUNER_IT9135_51: + case AF9033_TUNER_IT9135_52: + len = ARRAY_SIZE(ofsm_init_it9135_v1); + init = ofsm_init_it9135_v1; + break; + case AF9033_TUNER_IT9135_60: + case AF9033_TUNER_IT9135_61: + case AF9033_TUNER_IT9135_62: + len = ARRAY_SIZE(ofsm_init_it9135_v2); + init = ofsm_init_it9135_v2; + break; + default: + len = ARRAY_SIZE(ofsm_init); + init = ofsm_init; + break; + } + + ret = af9033_wr_reg_val_tab(dev, init, len); + if (ret < 0) + goto err; + + /* load tuner specific settings */ + dev_dbg(&dev->client->dev, "load tuner specific settings\n"); + switch (dev->cfg.tuner) { + case AF9033_TUNER_TUA9001: + len = ARRAY_SIZE(tuner_init_tua9001); + init = tuner_init_tua9001; + break; + case AF9033_TUNER_FC0011: + len = ARRAY_SIZE(tuner_init_fc0011); + init = tuner_init_fc0011; + break; + case AF9033_TUNER_MXL5007T: + len = ARRAY_SIZE(tuner_init_mxl5007t); + init = tuner_init_mxl5007t; + break; + case AF9033_TUNER_TDA18218: + len = ARRAY_SIZE(tuner_init_tda18218); + init = tuner_init_tda18218; + break; + case AF9033_TUNER_FC2580: + len = ARRAY_SIZE(tuner_init_fc2580); + init = tuner_init_fc2580; + break; + case AF9033_TUNER_FC0012: + len = ARRAY_SIZE(tuner_init_fc0012); + init = tuner_init_fc0012; + break; + case AF9033_TUNER_IT9135_38: + len = ARRAY_SIZE(tuner_init_it9135_38); + init = tuner_init_it9135_38; + break; + case AF9033_TUNER_IT9135_51: + len = ARRAY_SIZE(tuner_init_it9135_51); + init = tuner_init_it9135_51; + break; + case AF9033_TUNER_IT9135_52: + len = ARRAY_SIZE(tuner_init_it9135_52); + init = tuner_init_it9135_52; + break; + case AF9033_TUNER_IT9135_60: + len = ARRAY_SIZE(tuner_init_it9135_60); + init = tuner_init_it9135_60; + break; + case AF9033_TUNER_IT9135_61: + len = ARRAY_SIZE(tuner_init_it9135_61); + init = tuner_init_it9135_61; + break; + case AF9033_TUNER_IT9135_62: + len = ARRAY_SIZE(tuner_init_it9135_62); + init = tuner_init_it9135_62; + break; + default: + dev_dbg(&dev->client->dev, "unsupported tuner ID=%d\n", + dev->cfg.tuner); + ret = -ENODEV; + goto err; + } + + ret = af9033_wr_reg_val_tab(dev, init, len); + if (ret < 0) + goto err; + + if (dev->cfg.ts_mode == AF9033_TS_MODE_SERIAL) { + ret = af9033_wr_reg_mask(dev, 0x00d91c, 0x01, 0x01); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x00d917, 0x00, 0x01); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x00d916, 0x00, 0x01); + if (ret < 0) + goto err; + } + + switch (dev->cfg.tuner) { + case AF9033_TUNER_IT9135_60: + case AF9033_TUNER_IT9135_61: + case AF9033_TUNER_IT9135_62: + ret = af9033_wr_reg(dev, 0x800000, 0x01); + if (ret < 0) + goto err; + } + + dev->bandwidth_hz = 0; /* force to program all parameters */ + /* init stats here in order signal app 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->block_count.len = 1; + c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.len = 1; + c->block_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->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + /* start statistics polling */ + schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_sleep(struct dvb_frontend *fe) +{ + struct af9033_dev *dev = fe->demodulator_priv; + int ret, i; + u8 tmp; + + /* stop statistics polling */ + cancel_delayed_work_sync(&dev->stat_work); + + ret = af9033_wr_reg(dev, 0x80004c, 1); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x800000, 0); + if (ret < 0) + goto err; + + for (i = 100, tmp = 1; i && tmp; i--) { + ret = af9033_rd_reg(dev, 0x80004c, &tmp); + if (ret < 0) + goto err; + + usleep_range(200, 10000); + } + + dev_dbg(&dev->client->dev, "loop=%d\n", i); + + if (i == 0) { + ret = -ETIMEDOUT; + goto err; + } + + ret = af9033_wr_reg_mask(dev, 0x80fb24, 0x08, 0x08); + if (ret < 0) + goto err; + + /* prevent current leak (?) */ + if (dev->cfg.ts_mode == AF9033_TS_MODE_SERIAL) { + /* enable parallel TS */ + ret = af9033_wr_reg_mask(dev, 0x00d917, 0x00, 0x01); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x00d916, 0x01, 0x01); + if (ret < 0) + goto err; + } + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *fesettings) +{ + /* 800 => 2000 because IT9135 v2 is slow to gain lock */ + fesettings->min_delay_ms = 2000; + fesettings->step_size = 0; + fesettings->max_drift = 0; + + return 0; +} + +static int af9033_set_frontend(struct dvb_frontend *fe) +{ + struct af9033_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i, spec_inv, sampling_freq; + u8 tmp, buf[3], bandwidth_reg_val; + u32 if_frequency, freq_cw, adc_freq; + + dev_dbg(&dev->client->dev, "frequency=%d bandwidth_hz=%d\n", + c->frequency, c->bandwidth_hz); + + /* check bandwidth */ + switch (c->bandwidth_hz) { + case 6000000: + bandwidth_reg_val = 0x00; + break; + case 7000000: + bandwidth_reg_val = 0x01; + break; + case 8000000: + bandwidth_reg_val = 0x02; + break; + default: + dev_dbg(&dev->client->dev, "invalid bandwidth_hz\n"); + ret = -EINVAL; + goto err; + } + + /* program tuner */ + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + + /* program CFOE coefficients */ + if (c->bandwidth_hz != dev->bandwidth_hz) { + for (i = 0; i < ARRAY_SIZE(coeff_lut); i++) { + if (coeff_lut[i].clock == dev->cfg.clock && + coeff_lut[i].bandwidth_hz == c->bandwidth_hz) { + break; + } + } + if (i == ARRAY_SIZE(coeff_lut)) { + dev_err(&dev->client->dev, + "Couldn't find LUT config for clock=%d\n", + dev->cfg.clock); + ret = -EINVAL; + goto err; + } + + ret = af9033_wr_regs(dev, 0x800001, + coeff_lut[i].val, sizeof(coeff_lut[i].val)); + } + + /* program frequency control */ + if (c->bandwidth_hz != dev->bandwidth_hz) { + spec_inv = dev->cfg.spec_inv ? -1 : 1; + + for (i = 0; i < ARRAY_SIZE(clock_adc_lut); i++) { + if (clock_adc_lut[i].clock == dev->cfg.clock) + break; + } + if (i == ARRAY_SIZE(clock_adc_lut)) { + dev_err(&dev->client->dev, + "Couldn't find ADC clock for clock=%d\n", + dev->cfg.clock); + ret = -EINVAL; + goto err; + } + adc_freq = clock_adc_lut[i].adc; + + /* get used IF frequency */ + if (fe->ops.tuner_ops.get_if_frequency) + fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); + else + if_frequency = 0; + + sampling_freq = if_frequency; + + while (sampling_freq > (adc_freq / 2)) + sampling_freq -= adc_freq; + + if (sampling_freq >= 0) + spec_inv *= -1; + else + sampling_freq *= -1; + + freq_cw = af9033_div(dev, sampling_freq, adc_freq, 23ul); + + if (spec_inv == -1) + freq_cw = 0x800000 - freq_cw; + + if (dev->cfg.adc_multiplier == AF9033_ADC_MULTIPLIER_2X) + freq_cw /= 2; + + buf[0] = (freq_cw >> 0) & 0xff; + buf[1] = (freq_cw >> 8) & 0xff; + buf[2] = (freq_cw >> 16) & 0x7f; + + /* FIXME: there seems to be calculation error here... */ + if (if_frequency == 0) + buf[2] = 0; + + ret = af9033_wr_regs(dev, 0x800029, buf, 3); + if (ret < 0) + goto err; + + dev->bandwidth_hz = c->bandwidth_hz; + } + + ret = af9033_wr_reg_mask(dev, 0x80f904, bandwidth_reg_val, 0x03); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x800040, 0x00); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x800047, 0x00); + if (ret < 0) + goto err; + + ret = af9033_wr_reg_mask(dev, 0x80f999, 0x00, 0x01); + if (ret < 0) + goto err; + + if (c->frequency <= 230000000) + tmp = 0x00; /* VHF */ + else + tmp = 0x01; /* UHF */ + + ret = af9033_wr_reg(dev, 0x80004b, tmp); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x800000, 0x00); + if (ret < 0) + goto err; + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_get_frontend(struct dvb_frontend *fe) +{ + struct af9033_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret; + u8 buf[8]; + + dev_dbg(&dev->client->dev, "\n"); + + /* read all needed registers */ + ret = af9033_rd_regs(dev, 0x80f900, buf, sizeof(buf)); + if (ret < 0) + goto err; + + switch ((buf[0] >> 0) & 3) { + case 0: + c->transmission_mode = TRANSMISSION_MODE_2K; + break; + case 1: + c->transmission_mode = TRANSMISSION_MODE_8K; + break; + } + + switch ((buf[1] >> 0) & 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[2] >> 0) & 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[3] >> 0) & 3) { + case 0: + c->modulation = QPSK; + break; + case 1: + c->modulation = QAM_16; + break; + case 2: + c->modulation = QAM_64; + break; + } + + switch ((buf[4] >> 0) & 3) { + case 0: + c->bandwidth_hz = 6000000; + break; + case 1: + c->bandwidth_hz = 7000000; + break; + case 2: + c->bandwidth_hz = 8000000; + break; + } + + switch ((buf[6] >> 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; + case 5: + c->code_rate_HP = FEC_NONE; + break; + } + + switch ((buf[7] >> 0) & 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; + case 5: + c->code_rate_LP = FEC_NONE; + break; + } + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct af9033_dev *dev = fe->demodulator_priv; + int ret; + u8 tmp; + + *status = 0; + + /* radio channel status, 0=no result, 1=has signal, 2=no signal */ + ret = af9033_rd_reg(dev, 0x800047, &tmp); + if (ret < 0) + goto err; + + /* has signal */ + if (tmp == 0x01) + *status |= FE_HAS_SIGNAL; + + if (tmp != 0x02) { + /* TPS lock */ + ret = af9033_rd_reg_mask(dev, 0x80f5a9, &tmp, 0x01); + if (ret < 0) + goto err; + + if (tmp) + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; + + /* full lock */ + ret = af9033_rd_reg_mask(dev, 0x80f999, &tmp, 0x01); + if (ret < 0) + goto err; + + if (tmp) + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + } + + dev->fe_status = *status; + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct af9033_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; + int ret; + u8 u8tmp; + + /* use DVBv5 CNR */ + if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) { + /* Return 0.1 dB for AF9030 and 0-0xffff for IT9130. */ + if (dev->is_af9035) { + /* 1000x => 10x (0.1 dB) */ + *snr = div_s64(c->cnr.stat[0].svalue, 100); + } else { + /* 1000x => 1x (1 dB) */ + *snr = div_s64(c->cnr.stat[0].svalue, 1000); + + /* read current modulation */ + ret = af9033_rd_reg(dev, 0x80f903, &u8tmp); + if (ret) + goto err; + + /* scale value to 0x0000-0xffff */ + switch ((u8tmp >> 0) & 3) { + case 0: + *snr = *snr * 0xffff / 23; + break; + case 1: + *snr = *snr * 0xffff / 26; + break; + case 2: + *snr = *snr * 0xffff / 32; + break; + default: + goto err; + } + } + } else { + *snr = 0; + } + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct af9033_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; + int ret, tmp, power_real; + u8 u8tmp, gain_offset, buf[7]; + + if (dev->is_af9035) { + /* read signal strength of 0-100 scale */ + ret = af9033_rd_reg(dev, 0x800048, &u8tmp); + if (ret < 0) + goto err; + + /* scale value to 0x0000-0xffff */ + *strength = u8tmp * 0xffff / 100; + } else { + ret = af9033_rd_reg(dev, 0x8000f7, &u8tmp); + if (ret < 0) + goto err; + + ret = af9033_rd_regs(dev, 0x80f900, buf, 7); + if (ret < 0) + goto err; + + if (c->frequency <= 300000000) + gain_offset = 7; /* VHF */ + else + gain_offset = 4; /* UHF */ + + power_real = (u8tmp - 100 - gain_offset) - + power_reference[((buf[3] >> 0) & 3)][((buf[6] >> 0) & 7)]; + + if (power_real < -15) + tmp = 0; + else if ((power_real >= -15) && (power_real < 0)) + tmp = (2 * (power_real + 15)) / 3; + else if ((power_real >= 0) && (power_real < 20)) + tmp = 4 * power_real + 10; + else if ((power_real >= 20) && (power_real < 35)) + tmp = (2 * (power_real - 20)) / 3 + 90; + else + tmp = 100; + + /* scale value to 0x0000-0xffff */ + *strength = tmp * 0xffff / 100; + } + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct af9033_dev *dev = fe->demodulator_priv; + + *ber = (dev->post_bit_error - dev->post_bit_error_prev); + dev->post_bit_error_prev = dev->post_bit_error; + + return 0; +} + +static int af9033_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct af9033_dev *dev = fe->demodulator_priv; + + *ucblocks = dev->error_block_count; + return 0; +} + +static int af9033_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct af9033_dev *dev = fe->demodulator_priv; + int ret; + + dev_dbg(&dev->client->dev, "enable=%d\n", enable); + + ret = af9033_wr_reg_mask(dev, 0x00fa04, enable, 0x01); + if (ret < 0) + goto err; + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_pid_filter_ctrl(struct dvb_frontend *fe, int onoff) +{ + struct af9033_dev *dev = fe->demodulator_priv; + int ret; + + dev_dbg(&dev->client->dev, "onoff=%d\n", onoff); + + ret = af9033_wr_reg_mask(dev, 0x80f993, onoff, 0x01); + if (ret < 0) + goto err; + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static int af9033_pid_filter(struct dvb_frontend *fe, int index, u16 pid, + int onoff) +{ + struct af9033_dev *dev = fe->demodulator_priv; + int ret; + u8 wbuf[2] = {(pid >> 0) & 0xff, (pid >> 8) & 0xff}; + + dev_dbg(&dev->client->dev, "index=%d pid=%04x onoff=%d\n", + index, pid, onoff); + + if (pid > 0x1fff) + return 0; + + ret = af9033_wr_regs(dev, 0x80f996, wbuf, 2); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x80f994, onoff); + if (ret < 0) + goto err; + + ret = af9033_wr_reg(dev, 0x80f995, index); + if (ret < 0) + goto err; + + return 0; + +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + + return ret; +} + +static void af9033_stat_work(struct work_struct *work) +{ + struct af9033_dev *dev = container_of(work, struct af9033_dev, stat_work.work); + struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; + int ret, tmp, i, len; + u8 u8tmp, buf[7]; + + dev_dbg(&dev->client->dev, "\n"); + + /* signal strength */ + if (dev->fe_status & FE_HAS_SIGNAL) { + if (dev->is_af9035) { + ret = af9033_rd_reg(dev, 0x80004a, &u8tmp); + tmp = -u8tmp * 1000; + } else { + ret = af9033_rd_reg(dev, 0x8000f7, &u8tmp); + tmp = (u8tmp - 100) * 1000; + } + if (ret) + goto err; + + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + c->strength.stat[0].svalue = tmp; + } else { + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* CNR */ + if (dev->fe_status & FE_HAS_VITERBI) { + u32 snr_val; + const struct val_snr *snr_lut; + + /* read value */ + ret = af9033_rd_regs(dev, 0x80002c, buf, 3); + if (ret) + goto err; + + snr_val = (buf[2] << 16) | (buf[1] << 8) | (buf[0] << 0); + + /* read superframe number */ + ret = af9033_rd_reg(dev, 0x80f78b, &u8tmp); + if (ret) + goto err; + + if (u8tmp) + snr_val /= u8tmp; + + /* read current transmission mode */ + ret = af9033_rd_reg(dev, 0x80f900, &u8tmp); + if (ret) + goto err; + + switch ((u8tmp >> 0) & 3) { + case 0: + snr_val *= 4; + break; + case 1: + snr_val *= 1; + break; + case 2: + snr_val *= 2; + break; + default: + goto err_schedule_delayed_work; + } + + /* read current modulation */ + ret = af9033_rd_reg(dev, 0x80f903, &u8tmp); + if (ret) + goto err; + + switch ((u8tmp >> 0) & 3) { + case 0: + len = ARRAY_SIZE(qpsk_snr_lut); + snr_lut = qpsk_snr_lut; + break; + case 1: + len = ARRAY_SIZE(qam16_snr_lut); + snr_lut = qam16_snr_lut; + break; + case 2: + len = ARRAY_SIZE(qam64_snr_lut); + snr_lut = qam64_snr_lut; + break; + default: + goto err_schedule_delayed_work; + } + + for (i = 0; i < len; i++) { + tmp = snr_lut[i].snr * 1000; + if (snr_val < snr_lut[i].val) + break; + } + + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = tmp; + } else { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* UCB/PER/BER */ + if (dev->fe_status & FE_HAS_LOCK) { + /* outer FEC, 204 byte packets */ + u16 abort_packet_count, rsd_packet_count; + /* inner FEC, bits */ + u32 rsd_bit_err_count; + + /* + * Packet count used for measurement is 10000 + * (rsd_packet_count). Maybe it should be increased? + */ + + ret = af9033_rd_regs(dev, 0x800032, buf, 7); + if (ret) + goto err; + + abort_packet_count = (buf[1] << 8) | (buf[0] << 0); + rsd_bit_err_count = (buf[4] << 16) | (buf[3] << 8) | buf[2]; + rsd_packet_count = (buf[6] << 8) | (buf[5] << 0); + + dev->error_block_count += abort_packet_count; + dev->total_block_count += rsd_packet_count; + dev->post_bit_error += rsd_bit_err_count; + dev->post_bit_count += rsd_packet_count * 204 * 8; + + c->block_count.len = 1; + c->block_count.stat[0].scale = FE_SCALE_COUNTER; + c->block_count.stat[0].uvalue = dev->total_block_count; + + c->block_error.len = 1; + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue = dev->error_block_count; + + c->post_bit_count.len = 1; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue = dev->post_bit_count; + + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue = dev->post_bit_error; + } + +err_schedule_delayed_work: + schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); + return; +err: + dev_dbg(&dev->client->dev, "failed=%d\n", ret); +} + +static struct dvb_frontend_ops af9033_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "Afatech AF9033 (DVB-T)", + .frequency_min = 174000000, + .frequency_max = 862000000, + .frequency_stepsize = 250000, + .frequency_tolerance = 0, + .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 = af9033_init, + .sleep = af9033_sleep, + + .get_tune_settings = af9033_get_tune_settings, + .set_frontend = af9033_set_frontend, + .get_frontend = af9033_get_frontend, + + .read_status = af9033_read_status, + .read_snr = af9033_read_snr, + .read_signal_strength = af9033_read_signal_strength, + .read_ber = af9033_read_ber, + .read_ucblocks = af9033_read_ucblocks, + + .i2c_gate_ctrl = af9033_i2c_gate_ctrl, +}; + +static int af9033_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct af9033_config *cfg = client->dev.platform_data; + struct af9033_dev *dev; + int ret; + u8 buf[8]; + u32 reg; + + /* allocate memory for the internal state */ + dev = kzalloc(sizeof(struct af9033_dev), GFP_KERNEL); + if (dev == NULL) { + ret = -ENOMEM; + dev_err(&client->dev, "Could not allocate memory for state\n"); + goto err; + } + + /* setup the state */ + dev->client = client; + INIT_DELAYED_WORK(&dev->stat_work, af9033_stat_work); + memcpy(&dev->cfg, cfg, sizeof(struct af9033_config)); + + if (dev->cfg.clock != 12000000) { + ret = -ENODEV; + dev_err(&dev->client->dev, + "unsupported clock %d Hz, only 12000000 Hz is supported currently\n", + dev->cfg.clock); + goto err_kfree; + } + + /* firmware version */ + switch (dev->cfg.tuner) { + case AF9033_TUNER_IT9135_38: + case AF9033_TUNER_IT9135_51: + case AF9033_TUNER_IT9135_52: + case AF9033_TUNER_IT9135_60: + case AF9033_TUNER_IT9135_61: + case AF9033_TUNER_IT9135_62: + dev->is_it9135 = true; + reg = 0x004bfc; + break; + default: + dev->is_af9035 = true; + reg = 0x0083e9; + break; + } + + ret = af9033_rd_regs(dev, reg, &buf[0], 4); + if (ret < 0) + goto err_kfree; + + ret = af9033_rd_regs(dev, 0x804191, &buf[4], 4); + if (ret < 0) + goto err_kfree; + + dev_info(&dev->client->dev, + "firmware version: LINK %d.%d.%d.%d - OFDM %d.%d.%d.%d\n", + buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], + buf[7]); + + /* sleep */ + switch (dev->cfg.tuner) { + case AF9033_TUNER_IT9135_38: + case AF9033_TUNER_IT9135_51: + case AF9033_TUNER_IT9135_52: + case AF9033_TUNER_IT9135_60: + case AF9033_TUNER_IT9135_61: + case AF9033_TUNER_IT9135_62: + /* IT9135 did not like to sleep at that early */ + break; + default: + ret = af9033_wr_reg(dev, 0x80004c, 1); + if (ret < 0) + goto err_kfree; + + ret = af9033_wr_reg(dev, 0x800000, 0); + if (ret < 0) + goto err_kfree; + } + + /* configure internal TS mode */ + switch (dev->cfg.ts_mode) { + case AF9033_TS_MODE_PARALLEL: + dev->ts_mode_parallel = true; + break; + case AF9033_TS_MODE_SERIAL: + dev->ts_mode_serial = true; + break; + case AF9033_TS_MODE_USB: + /* usb mode for AF9035 */ + default: + break; + } + + /* create dvb_frontend */ + memcpy(&dev->fe.ops, &af9033_ops, sizeof(struct dvb_frontend_ops)); + dev->fe.demodulator_priv = dev; + *cfg->fe = &dev->fe; + if (cfg->ops) { + cfg->ops->pid_filter = af9033_pid_filter; + cfg->ops->pid_filter_ctrl = af9033_pid_filter_ctrl; + } + i2c_set_clientdata(client, dev); + + dev_info(&dev->client->dev, "Afatech AF9033 successfully attached\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int af9033_remove(struct i2c_client *client) +{ + struct af9033_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&dev->client->dev, "\n"); + + dev->fe.ops.release = NULL; + dev->fe.demodulator_priv = NULL; + kfree(dev); + + return 0; +} + +static const struct i2c_device_id af9033_id_table[] = { + {"af9033", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, af9033_id_table); + +static struct i2c_driver af9033_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "af9033", + }, + .probe = af9033_probe, + .remove = af9033_remove, + .id_table = af9033_id_table, +}; + +module_i2c_driver(af9033_driver); + +MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); +MODULE_DESCRIPTION("Afatech AF9033 DVB-T demodulator driver"); +MODULE_LICENSE("GPL"); |