forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
769 lines
19 KiB
769 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Panasonic MN88473 DVB-T/T2/C demodulator driver |
|
* |
|
* Copyright (C) 2014 Antti Palosaari <[email protected]> |
|
*/ |
|
|
|
#include "mn88473_priv.h" |
|
|
|
static int mn88473_get_tune_settings(struct dvb_frontend *fe, |
|
struct dvb_frontend_tune_settings *s) |
|
{ |
|
s->min_delay_ms = 1000; |
|
return 0; |
|
} |
|
|
|
static int mn88473_set_frontend(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, i; |
|
unsigned int uitmp; |
|
u32 if_frequency; |
|
u8 delivery_system_val, if_val[3], *conf_val_ptr; |
|
u8 reg_bank2_2d_val, reg_bank0_d2_val; |
|
|
|
dev_dbg(&client->dev, |
|
"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n", |
|
c->delivery_system, c->modulation, c->frequency, |
|
c->bandwidth_hz, c->symbol_rate, c->inversion, c->stream_id); |
|
|
|
if (!dev->active) { |
|
ret = -EAGAIN; |
|
goto err; |
|
} |
|
|
|
switch (c->delivery_system) { |
|
case SYS_DVBT: |
|
delivery_system_val = 0x02; |
|
reg_bank2_2d_val = 0x23; |
|
reg_bank0_d2_val = 0x2a; |
|
break; |
|
case SYS_DVBT2: |
|
delivery_system_val = 0x03; |
|
reg_bank2_2d_val = 0x3b; |
|
reg_bank0_d2_val = 0x29; |
|
break; |
|
case SYS_DVBC_ANNEX_A: |
|
delivery_system_val = 0x04; |
|
reg_bank2_2d_val = 0x3b; |
|
reg_bank0_d2_val = 0x29; |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
|
|
switch (c->delivery_system) { |
|
case SYS_DVBT: |
|
case SYS_DVBT2: |
|
switch (c->bandwidth_hz) { |
|
case 6000000: |
|
conf_val_ptr = "\xe9\x55\x55\x1c\x29\x1c\x29"; |
|
break; |
|
case 7000000: |
|
conf_val_ptr = "\xc8\x00\x00\x17\x0a\x17\x0a"; |
|
break; |
|
case 8000000: |
|
conf_val_ptr = "\xaf\x00\x00\x11\xec\x11\xec"; |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
break; |
|
case SYS_DVBC_ANNEX_A: |
|
conf_val_ptr = "\x10\xab\x0d\xae\x1d\x9d"; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
/* Program tuner */ |
|
if (fe->ops.tuner_ops.set_params) { |
|
ret = fe->ops.tuner_ops.set_params(fe); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
if (fe->ops.tuner_ops.get_if_frequency) { |
|
ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); |
|
if (ret) |
|
goto err; |
|
|
|
dev_dbg(&client->dev, "get_if_frequency=%u\n", if_frequency); |
|
} else { |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
|
|
/* Calculate IF registers */ |
|
uitmp = DIV_ROUND_CLOSEST_ULL((u64) if_frequency * 0x1000000, dev->clk); |
|
if_val[0] = (uitmp >> 16) & 0xff; |
|
if_val[1] = (uitmp >> 8) & 0xff; |
|
if_val[2] = (uitmp >> 0) & 0xff; |
|
|
|
ret = regmap_write(dev->regmap[2], 0x05, 0x00); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0xfb, 0x13); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0xef, 0x13); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0xf9, 0x13); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x00, 0x18); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x01, 0x01); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x02, 0x21); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x0b, 0x00); |
|
if (ret) |
|
goto err; |
|
|
|
for (i = 0; i < sizeof(if_val); i++) { |
|
ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
switch (c->delivery_system) { |
|
case SYS_DVBT: |
|
case SYS_DVBT2: |
|
for (i = 0; i < 7; i++) { |
|
ret = regmap_write(dev->regmap[2], 0x13 + i, |
|
conf_val_ptr[i]); |
|
if (ret) |
|
goto err; |
|
} |
|
break; |
|
case SYS_DVBC_ANNEX_A: |
|
ret = regmap_bulk_write(dev->regmap[1], 0x10, conf_val_ptr, 6); |
|
if (ret) |
|
goto err; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
ret = regmap_write(dev->regmap[2], 0x2d, reg_bank2_2d_val); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x2e, 0x00); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x56, 0x0d); |
|
if (ret) |
|
goto err; |
|
ret = regmap_bulk_write(dev->regmap[0], 0x01, |
|
"\xba\x13\x80\xba\x91\xdd\xe7\x28", 8); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x0a, 0x1a); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x13, 0x1f); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x19, 0x03); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x1d, 0xb0); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x2a, 0x72); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x2d, 0x00); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x3c, 0x00); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0x3f, 0xf8); |
|
if (ret) |
|
goto err; |
|
ret = regmap_bulk_write(dev->regmap[0], 0x40, "\xf4\x08", 2); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0xd2, reg_bank0_d2_val); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0xd4, 0x55); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[1], 0xbe, 0x08); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0xb2, 0x37); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[0], 0xd7, 0x04); |
|
if (ret) |
|
goto err; |
|
|
|
/* PLP */ |
|
if (c->delivery_system == SYS_DVBT2) { |
|
ret = regmap_write(dev->regmap[2], 0x36, |
|
(c->stream_id == NO_STREAM_ID_FILTER) ? 0 : |
|
c->stream_id ); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
/* Reset FSM */ |
|
ret = regmap_write(dev->regmap[2], 0xf8, 0x9f); |
|
if (ret) |
|
goto err; |
|
|
|
return 0; |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", 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, i, stmp; |
|
unsigned int utmp, utmp1, utmp2; |
|
u8 buf[5]; |
|
|
|
if (!dev->active) { |
|
ret = -EAGAIN; |
|
goto err; |
|
} |
|
|
|
/* Lock detection */ |
|
switch (c->delivery_system) { |
|
case SYS_DVBT: |
|
ret = regmap_read(dev->regmap[0], 0x62, &utmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (!(utmp & 0xa0)) { |
|
if ((utmp & 0x0f) >= 0x09) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | |
|
FE_HAS_VITERBI | FE_HAS_SYNC | |
|
FE_HAS_LOCK; |
|
else if ((utmp & 0x0f) >= 0x03) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER; |
|
} else { |
|
*status = 0; |
|
} |
|
break; |
|
case SYS_DVBT2: |
|
ret = regmap_read(dev->regmap[2], 0x8b, &utmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (!(utmp & 0x40)) { |
|
if ((utmp & 0x0f) >= 0x0d) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | |
|
FE_HAS_VITERBI | FE_HAS_SYNC | |
|
FE_HAS_LOCK; |
|
else if ((utmp & 0x0f) >= 0x0a) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | |
|
FE_HAS_VITERBI; |
|
else if ((utmp & 0x0f) >= 0x07) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER; |
|
} else { |
|
*status = 0; |
|
} |
|
break; |
|
case SYS_DVBC_ANNEX_A: |
|
ret = regmap_read(dev->regmap[1], 0x85, &utmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (!(utmp & 0x40)) { |
|
ret = regmap_read(dev->regmap[1], 0x89, &utmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (utmp & 0x01) |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | |
|
FE_HAS_VITERBI | FE_HAS_SYNC | |
|
FE_HAS_LOCK; |
|
} else { |
|
*status = 0; |
|
} |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
|
|
/* Signal strength */ |
|
if (*status & FE_HAS_SIGNAL) { |
|
for (i = 0; i < 2; i++) { |
|
ret = regmap_bulk_read(dev->regmap[2], 0x86 + i, |
|
&buf[i], 1); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
/* AGCRD[15:6] gives us a 10bit value ([5:0] are always 0) */ |
|
utmp1 = buf[0] << 8 | buf[1] << 0 | buf[0] >> 2; |
|
dev_dbg(&client->dev, "strength=%u\n", utmp1); |
|
|
|
c->strength.stat[0].scale = FE_SCALE_RELATIVE; |
|
c->strength.stat[0].uvalue = utmp1; |
|
} else { |
|
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
} |
|
|
|
/* CNR */ |
|
if (*status & FE_HAS_VITERBI && c->delivery_system == SYS_DVBT) { |
|
/* DVB-T CNR */ |
|
ret = regmap_bulk_read(dev->regmap[0], 0x8f, buf, 2); |
|
if (ret) |
|
goto err; |
|
|
|
utmp = buf[0] << 8 | buf[1] << 0; |
|
if (utmp) { |
|
/* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */ |
|
/* log10(65536) = 80807124, 0.2 = 3355443 */ |
|
stmp = div_u64(((u64)80807124 - intlog10(utmp) |
|
+ 3355443) * 10000, 1 << 24); |
|
dev_dbg(&client->dev, "cnr=%d value=%u\n", stmp, utmp); |
|
} else { |
|
stmp = 0; |
|
} |
|
|
|
c->cnr.stat[0].svalue = stmp; |
|
c->cnr.stat[0].scale = FE_SCALE_DECIBEL; |
|
} else if (*status & FE_HAS_VITERBI && |
|
c->delivery_system == SYS_DVBT2) { |
|
/* DVB-T2 CNR */ |
|
for (i = 0; i < 3; i++) { |
|
ret = regmap_bulk_read(dev->regmap[2], 0xb7 + i, |
|
&buf[i], 1); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
utmp = buf[1] << 8 | buf[2] << 0; |
|
utmp1 = (buf[0] >> 2) & 0x01; /* 0=SISO, 1=MISO */ |
|
if (utmp) { |
|
if (utmp1) { |
|
/* CNR[dB]: 10 * (log10(16384 / value) - 0.6) */ |
|
/* log10(16384) = 70706234, 0.6 = 10066330 */ |
|
stmp = div_u64(((u64)70706234 - intlog10(utmp) |
|
- 10066330) * 10000, 1 << 24); |
|
dev_dbg(&client->dev, "cnr=%d value=%u MISO\n", |
|
stmp, utmp); |
|
} else { |
|
/* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */ |
|
/* log10(65536) = 80807124, 0.2 = 3355443 */ |
|
stmp = div_u64(((u64)80807124 - intlog10(utmp) |
|
+ 3355443) * 10000, 1 << 24); |
|
dev_dbg(&client->dev, "cnr=%d value=%u SISO\n", |
|
stmp, utmp); |
|
} |
|
} else { |
|
stmp = 0; |
|
} |
|
|
|
c->cnr.stat[0].svalue = stmp; |
|
c->cnr.stat[0].scale = FE_SCALE_DECIBEL; |
|
} else if (*status & FE_HAS_VITERBI && |
|
c->delivery_system == SYS_DVBC_ANNEX_A) { |
|
/* DVB-C CNR */ |
|
ret = regmap_bulk_read(dev->regmap[1], 0xa1, buf, 4); |
|
if (ret) |
|
goto err; |
|
|
|
utmp1 = buf[0] << 8 | buf[1] << 0; /* signal */ |
|
utmp2 = buf[2] << 8 | buf[3] << 0; /* noise */ |
|
if (utmp1 && utmp2) { |
|
/* CNR[dB]: 10 * log10(8 * (signal / noise)) */ |
|
/* log10(8) = 15151336 */ |
|
stmp = div_u64(((u64)15151336 + intlog10(utmp1) |
|
- intlog10(utmp2)) * 10000, 1 << 24); |
|
dev_dbg(&client->dev, "cnr=%d signal=%u noise=%u\n", |
|
stmp, utmp1, utmp2); |
|
} else { |
|
stmp = 0; |
|
} |
|
|
|
c->cnr.stat[0].svalue = stmp; |
|
c->cnr.stat[0].scale = FE_SCALE_DECIBEL; |
|
} else { |
|
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
} |
|
|
|
/* BER */ |
|
if (*status & FE_HAS_LOCK && (c->delivery_system == SYS_DVBT || |
|
c->delivery_system == SYS_DVBC_ANNEX_A)) { |
|
/* DVB-T & DVB-C BER */ |
|
ret = regmap_bulk_read(dev->regmap[0], 0x92, buf, 5); |
|
if (ret) |
|
goto err; |
|
|
|
utmp1 = buf[0] << 16 | buf[1] << 8 | buf[2] << 0; |
|
utmp2 = buf[3] << 8 | buf[4] << 0; |
|
utmp2 = utmp2 * 8 * 204; |
|
dev_dbg(&client->dev, "post_bit_error=%u post_bit_count=%u\n", |
|
utmp1, utmp2); |
|
|
|
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; |
|
} else { |
|
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
} |
|
|
|
/* PER */ |
|
if (*status & FE_HAS_LOCK) { |
|
ret = regmap_bulk_read(dev->regmap[0], 0xdd, buf, 4); |
|
if (ret) |
|
goto err; |
|
|
|
utmp1 = buf[0] << 8 | buf[1] << 0; |
|
utmp2 = buf[2] << 8 | buf[3] << 0; |
|
dev_dbg(&client->dev, "block_error=%u block_count=%u\n", |
|
utmp1, utmp2); |
|
|
|
c->block_error.stat[0].scale = FE_SCALE_COUNTER; |
|
c->block_error.stat[0].uvalue += utmp1; |
|
c->block_count.stat[0].scale = FE_SCALE_COUNTER; |
|
c->block_count.stat[0].uvalue += utmp2; |
|
} else { |
|
c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
} |
|
|
|
return 0; |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", ret); |
|
return ret; |
|
} |
|
|
|
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; |
|
const char *name = MN88473_FIRMWARE; |
|
|
|
dev_dbg(&client->dev, "\n"); |
|
|
|
/* Check if firmware is already running */ |
|
ret = regmap_read(dev->regmap[0], 0xf5, &uitmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (!(uitmp & 0x01)) |
|
goto warm; |
|
|
|
/* Request the firmware, this will block and timeout */ |
|
ret = request_firmware(&fw, name, &client->dev); |
|
if (ret) { |
|
dev_err(&client->dev, "firmware file '%s' not found\n", name); |
|
goto err; |
|
} |
|
|
|
dev_info(&client->dev, "downloading firmware from file '%s'\n", name); |
|
|
|
ret = regmap_write(dev->regmap[0], 0xf5, 0x03); |
|
if (ret) |
|
goto err_release_firmware; |
|
|
|
for (remain = fw->size; remain > 0; remain -= (dev->i2c_wr_max - 1)) { |
|
len = min(dev->i2c_wr_max - 1, remain); |
|
ret = regmap_bulk_write(dev->regmap[0], 0xf6, |
|
&fw->data[fw->size - remain], len); |
|
if (ret) { |
|
dev_err(&client->dev, "firmware download failed %d\n", |
|
ret); |
|
goto err_release_firmware; |
|
} |
|
} |
|
|
|
release_firmware(fw); |
|
|
|
/* Parity check of firmware */ |
|
ret = regmap_read(dev->regmap[0], 0xf8, &uitmp); |
|
if (ret) |
|
goto err; |
|
|
|
if (uitmp & 0x10) { |
|
dev_err(&client->dev, "firmware parity check failed\n"); |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
|
|
ret = regmap_write(dev->regmap[0], 0xf5, 0x00); |
|
if (ret) |
|
goto err; |
|
warm: |
|
/* TS config */ |
|
ret = regmap_write(dev->regmap[2], 0x09, 0x08); |
|
if (ret) |
|
goto err; |
|
ret = regmap_write(dev->regmap[2], 0x08, 0x1d); |
|
if (ret) |
|
goto err; |
|
|
|
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); |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", ret); |
|
return ret; |
|
} |
|
|
|
static int mn88473_sleep(struct dvb_frontend *fe) |
|
{ |
|
struct i2c_client *client = fe->demodulator_priv; |
|
struct mn88473_dev *dev = i2c_get_clientdata(client); |
|
int ret; |
|
|
|
dev_dbg(&client->dev, "\n"); |
|
|
|
dev->active = false; |
|
|
|
ret = regmap_write(dev->regmap[2], 0x05, 0x3e); |
|
if (ret) |
|
goto err; |
|
|
|
return 0; |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", ret); |
|
return ret; |
|
} |
|
|
|
static const struct dvb_frontend_ops mn88473_ops = { |
|
.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, |
|
.info = { |
|
.name = "Panasonic MN88473", |
|
.symbol_rate_min = 1000000, |
|
.symbol_rate_max = 7200000, |
|
.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_32 | |
|
FE_CAN_QAM_64 | |
|
FE_CAN_QAM_128 | |
|
FE_CAN_QAM_256 | |
|
FE_CAN_QAM_AUTO | |
|
FE_CAN_TRANSMISSION_MODE_AUTO | |
|
FE_CAN_GUARD_INTERVAL_AUTO | |
|
FE_CAN_HIERARCHY_AUTO | |
|
FE_CAN_MUTE_TS | |
|
FE_CAN_2G_MODULATION | |
|
FE_CAN_MULTISTREAM |
|
}, |
|
|
|
.get_tune_settings = mn88473_get_tune_settings, |
|
|
|
.init = mn88473_init, |
|
.sleep = mn88473_sleep, |
|
|
|
.set_frontend = mn88473_set_frontend, |
|
|
|
.read_status = mn88473_read_status, |
|
}; |
|
|
|
static int mn88473_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct mn88473_config *config = client->dev.platform_data; |
|
struct mn88473_dev *dev; |
|
int ret; |
|
unsigned int uitmp; |
|
static const struct regmap_config regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
}; |
|
|
|
dev_dbg(&client->dev, "\n"); |
|
|
|
/* Caller really need to provide pointer for frontend we create */ |
|
if (config->fe == NULL) { |
|
dev_err(&client->dev, "frontend pointer not defined\n"); |
|
ret = -EINVAL; |
|
goto err; |
|
} |
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
|
if (dev == NULL) { |
|
ret = -ENOMEM; |
|
goto err; |
|
} |
|
|
|
if (config->i2c_wr_max) |
|
dev->i2c_wr_max = config->i2c_wr_max; |
|
else |
|
dev->i2c_wr_max = ~0; |
|
|
|
if (config->xtal) |
|
dev->clk = config->xtal; |
|
else |
|
dev->clk = 25000000; |
|
dev->client[0] = client; |
|
dev->regmap[0] = regmap_init_i2c(dev->client[0], ®map_config); |
|
if (IS_ERR(dev->regmap[0])) { |
|
ret = PTR_ERR(dev->regmap[0]); |
|
goto err_kfree; |
|
} |
|
|
|
/* |
|
* Chip has three I2C addresses for different register banks. Used |
|
* addresses are 0x18, 0x1a and 0x1c. We register two dummy clients, |
|
* 0x1a and 0x1c, in order to get own I2C client for each register bank. |
|
* |
|
* Also, register bank 2 do not support sequential I/O. Only single |
|
* register write or read is allowed to that bank. |
|
*/ |
|
dev->client[1] = i2c_new_dummy_device(client->adapter, 0x1a); |
|
if (IS_ERR(dev->client[1])) { |
|
ret = PTR_ERR(dev->client[1]); |
|
dev_err(&client->dev, "I2C registration failed\n"); |
|
goto err_regmap_0_regmap_exit; |
|
} |
|
dev->regmap[1] = regmap_init_i2c(dev->client[1], ®map_config); |
|
if (IS_ERR(dev->regmap[1])) { |
|
ret = PTR_ERR(dev->regmap[1]); |
|
goto err_client_1_i2c_unregister_device; |
|
} |
|
i2c_set_clientdata(dev->client[1], dev); |
|
|
|
dev->client[2] = i2c_new_dummy_device(client->adapter, 0x1c); |
|
if (IS_ERR(dev->client[2])) { |
|
ret = PTR_ERR(dev->client[2]); |
|
dev_err(&client->dev, "2nd I2C registration failed\n"); |
|
goto err_regmap_1_regmap_exit; |
|
} |
|
dev->regmap[2] = regmap_init_i2c(dev->client[2], ®map_config); |
|
if (IS_ERR(dev->regmap[2])) { |
|
ret = PTR_ERR(dev->regmap[2]); |
|
goto err_client_2_i2c_unregister_device; |
|
} |
|
i2c_set_clientdata(dev->client[2], dev); |
|
|
|
/* Check demod answers with correct chip id */ |
|
ret = regmap_read(dev->regmap[2], 0xff, &uitmp); |
|
if (ret) |
|
goto err_regmap_2_regmap_exit; |
|
|
|
dev_dbg(&client->dev, "chip id=%02x\n", uitmp); |
|
|
|
if (uitmp != 0x03) { |
|
ret = -ENODEV; |
|
goto err_regmap_2_regmap_exit; |
|
} |
|
|
|
/* Sleep because chip is active by default */ |
|
ret = regmap_write(dev->regmap[2], 0x05, 0x3e); |
|
if (ret) |
|
goto err_regmap_2_regmap_exit; |
|
|
|
/* Create dvb frontend */ |
|
memcpy(&dev->frontend.ops, &mn88473_ops, sizeof(dev->frontend.ops)); |
|
dev->frontend.demodulator_priv = client; |
|
*config->fe = &dev->frontend; |
|
i2c_set_clientdata(client, dev); |
|
|
|
dev_info(&client->dev, "Panasonic MN88473 successfully identified\n"); |
|
|
|
return 0; |
|
err_regmap_2_regmap_exit: |
|
regmap_exit(dev->regmap[2]); |
|
err_client_2_i2c_unregister_device: |
|
i2c_unregister_device(dev->client[2]); |
|
err_regmap_1_regmap_exit: |
|
regmap_exit(dev->regmap[1]); |
|
err_client_1_i2c_unregister_device: |
|
i2c_unregister_device(dev->client[1]); |
|
err_regmap_0_regmap_exit: |
|
regmap_exit(dev->regmap[0]); |
|
err_kfree: |
|
kfree(dev); |
|
err: |
|
dev_dbg(&client->dev, "failed=%d\n", ret); |
|
return ret; |
|
} |
|
|
|
static int mn88473_remove(struct i2c_client *client) |
|
{ |
|
struct mn88473_dev *dev = i2c_get_clientdata(client); |
|
|
|
dev_dbg(&client->dev, "\n"); |
|
|
|
regmap_exit(dev->regmap[2]); |
|
i2c_unregister_device(dev->client[2]); |
|
|
|
regmap_exit(dev->regmap[1]); |
|
i2c_unregister_device(dev->client[1]); |
|
|
|
regmap_exit(dev->regmap[0]); |
|
|
|
kfree(dev); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id mn88473_id_table[] = { |
|
{"mn88473", 0}, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, mn88473_id_table); |
|
|
|
static struct i2c_driver mn88473_driver = { |
|
.driver = { |
|
.name = "mn88473", |
|
.suppress_bind_attrs = true, |
|
}, |
|
.probe = mn88473_probe, |
|
.remove = mn88473_remove, |
|
.id_table = mn88473_id_table, |
|
}; |
|
|
|
module_i2c_driver(mn88473_driver); |
|
|
|
MODULE_AUTHOR("Antti Palosaari <[email protected]>"); |
|
MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver"); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_FIRMWARE(MN88473_FIRMWARE);
|
|
|