Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Panasonic MN88472 DVB-T/T2/C demodulator driver
 *
 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
 */
 
#include "mn88472_priv.h"
 
static int mn88472_get_tune_settings(struct dvb_frontend *fe,
<------><------><------><------>     struct dvb_frontend_tune_settings *s)
{
<------>s->min_delay_ms = 1000;
<------>return 0;
}
 
static int mn88472_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
<------>struct i2c_client *client = fe->demodulator_priv;
<------>struct mn88472_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;
<------>}
 
<------>switch (c->delivery_system) {
<------>case SYS_DVBT:
<------><------>ret = regmap_read(dev->regmap[0], 0x7f, &utmp);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>if ((utmp & 0x0f) >= 0x09)
<------><------><------>*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
<------><------><------><------>  FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
<------><------>else
<------><------><------>*status = 0;
<------><------>break;
<------>case SYS_DVBT2:
<------><------>ret = regmap_read(dev->regmap[2], 0x92, &utmp);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>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], 0x84, &utmp);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>if ((utmp & 0x0f) >= 0x08)
<------><------><------>*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], 0x8e + i,
<------><------><------><------><------>       &buf[i], 1);
<------><------><------>if (ret)
<------><------><------><------>goto err;
<------><------>}
 
<------><------>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], 0x9c, buf, 2);
<------><------>if (ret)
<------><------><------>goto err;
 
<------><------>utmp = buf[0] << 8 | buf[1] << 0;
<------><------>if (utmp) {
<------><------><------>/* CNR[dB]: 10 * log10(65536 / value) + 2 */
<------><------><------>/* log10(65536) = 80807124, 0.2 = 3355443 */
<------><------><------>stmp = ((u64)80807124 - intlog10(utmp) + 3355443)
<------><------><------>       * 10000 >> 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], 0xbc + 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) - 6 */
<------><------><------><------>/* log10(16384) = 70706234, 0.6 = 10066330 */
<------><------><------><------>stmp = ((u64)70706234 - intlog10(utmp)
<------><------><------><------>       - 10066330) * 10000 >> 24;
<------><------><------><------>dev_dbg(&client->dev, "cnr=%d value=%u MISO\n",
<------><------><------><------><------>stmp, utmp);
<------><------><------>} else {
<------><------><------><------>/* CNR[dB]: 10 * log10(65536 / value) + 2 */
<------><------><------><------>/* log10(65536) = 80807124, 0.2 = 3355443 */
<------><------><------><------>stmp = ((u64)80807124 - intlog10(utmp)
<------><------><------><------>       + 3355443) * 10000 >> 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 = ((u64)15151336 + intlog10(utmp1)
<------><------><------>       - intlog10(utmp2)) * 10000 >> 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;
<------>}
 
<------>/* PER */
<------>if (*status & FE_HAS_SYNC) {
<------><------>ret = regmap_bulk_read(dev->regmap[0], 0xe1, 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 mn88472_set_frontend(struct dvb_frontend *fe)
{
<------>struct i2c_client *client = fe->demodulator_priv;
<------>struct mn88472_dev *dev = i2c_get_clientdata(client);
<------>struct dtv_frontend_properties *c = &fe->dtv_property_cache;
<------>int ret, i;
<------>unsigned int utmp;
<------>u32 if_frequency;
<------>u8 buf[3], delivery_system_val, bandwidth_val, *bandwidth_vals_ptr;
<------>u8 reg_bank0_b4_val, reg_bank0_cd_val, reg_bank0_d4_val;
<------>u8 reg_bank0_d6_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_bank0_b4_val = 0x00;
<------><------>reg_bank0_cd_val = 0x1f;
<------><------>reg_bank0_d4_val = 0x0a;
<------><------>reg_bank0_d6_val = 0x48;
<------><------>break;
<------>case SYS_DVBT2:
<------><------>delivery_system_val = 0x03;
<------><------>reg_bank0_b4_val = 0xf6;
<------><------>reg_bank0_cd_val = 0x01;
<------><------>reg_bank0_d4_val = 0x09;
<------><------>reg_bank0_d6_val = 0x46;
<------><------>break;
<------>case SYS_DVBC_ANNEX_A:
<------><------>delivery_system_val = 0x04;
<------><------>reg_bank0_b4_val = 0x00;
<------><------>reg_bank0_cd_val = 0x17;
<------><------>reg_bank0_d4_val = 0x09;
<------><------>reg_bank0_d6_val = 0x48;
<------><------>break;
<------>default:
<------><------>ret = -EINVAL;
<------><------>goto err;
<------>}
 
<------>switch (c->delivery_system) {
<------>case SYS_DVBT:
<------>case SYS_DVBT2:
<------><------>switch (c->bandwidth_hz) {
<------><------>case 5000000:
<------><------><------>bandwidth_vals_ptr = "\xe5\x99\x9a\x1b\xa9\x1b\xa9";
<------><------><------>bandwidth_val = 0x03;
<------><------><------>break;
<------><------>case 6000000:
<------><------><------>bandwidth_vals_ptr = "\xbf\x55\x55\x15\x6b\x15\x6b";
<------><------><------>bandwidth_val = 0x02;
<------><------><------>break;
<------><------>case 7000000:
<------><------><------>bandwidth_vals_ptr = "\xa4\x00\x00\x0f\x2c\x0f\x2c";
<------><------><------>bandwidth_val = 0x01;
<------><------><------>break;
<------><------>case 8000000:
<------><------><------>bandwidth_vals_ptr = "\x8f\x80\x00\x08\xee\x08\xee";
<------><------><------>bandwidth_val = 0x00;
<------><------><------>break;
<------><------>default:
<------><------><------>ret = -EINVAL;
<------><------><------>goto err;
<------><------>}
<------><------>break;
<------>case SYS_DVBC_ANNEX_A:
<------><------>bandwidth_vals_ptr = NULL;
<------><------>bandwidth_val = 0x00;
<------><------>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=%d\n", if_frequency);
<------>} else {
<------><------>ret = -EINVAL;
<------><------>goto err;
<------>}
 
<------>ret = regmap_write(dev->regmap[2], 0x00, 0x66);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x01, 0x00);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x02, 0x01);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x04, bandwidth_val);
<------>if (ret)
<------><------>goto err;
 
<------>/* IF */
<------>utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, dev->clk);
<------>buf[0] = (utmp >> 16) & 0xff;
<------>buf[1] = (utmp >>  8) & 0xff;
<------>buf[2] = (utmp >>  0) & 0xff;
<------>for (i = 0; i < 3; i++) {
<------><------>ret = regmap_write(dev->regmap[2], 0x10 + i, buf[i]);
<------><------>if (ret)
<------><------><------>goto err;
<------>}
 
<------>/* Bandwidth */
<------>if (bandwidth_vals_ptr) {
<------><------>for (i = 0; i < 7; i++) {
<------><------><------>ret = regmap_write(dev->regmap[2], 0x13 + i,
<------><------><------><------><------>   bandwidth_vals_ptr[i]);
<------><------><------>if (ret)
<------><------><------><------>goto err;
<------><------>}
<------>}
 
<------>ret = regmap_write(dev->regmap[0], 0xb4, reg_bank0_b4_val);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[0], 0xcd, reg_bank0_cd_val);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[0], 0xd4, reg_bank0_d4_val);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[0], 0xd6, reg_bank0_d6_val);
<------>if (ret)
<------><------>goto err;
 
<------>switch (c->delivery_system) {
<------>case SYS_DVBT:
<------><------>ret = regmap_write(dev->regmap[0], 0x07, 0x26);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>ret = regmap_write(dev->regmap[0], 0x00, 0xba);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>ret = regmap_write(dev->regmap[0], 0x01, 0x13);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>break;
<------>case SYS_DVBT2:
<------><------>ret = regmap_write(dev->regmap[2], 0x2b, 0x13);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>ret = regmap_write(dev->regmap[2], 0x4f, 0x05);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>ret = regmap_write(dev->regmap[1], 0xf6, 0x05);
<------><------>if (ret)
<------><------><------>goto err;
<------><------>ret = regmap_write(dev->regmap[2], 0x32,
<------><------><------><------>(c->stream_id == NO_STREAM_ID_FILTER) ? 0 :
<------><------><------><------>c->stream_id );
<------><------>if (ret)
<------><------><------>goto err;
<------><------>break;
<------>case SYS_DVBC_ANNEX_A:
<------><------>break;
<------>default:
<------><------>break;
<------>}
 
<------>/* 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 mn88472_init(struct dvb_frontend *fe)
{
<------>struct i2c_client *client = fe->demodulator_priv;
<------>struct mn88472_dev *dev = i2c_get_clientdata(client);
<------>int ret, len, rem;
<------>unsigned int utmp;
<------>const struct firmware *firmware;
<------>const char *name = MN88472_FIRMWARE;
 
<------>dev_dbg(&client->dev, "\n");
 
<------>/* Power up */
<------>ret = regmap_write(dev->regmap[2], 0x05, 0x00);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x0c, 0x00);
<------>if (ret)
<------><------>goto err;
 
<------>/* Check if firmware is already running */
<------>ret = regmap_read(dev->regmap[0], 0xf5, &utmp);
<------>if (ret)
<------><------>goto err;
<------>if (!(utmp & 0x01))
<------><------>goto warm;
 
<------>ret = request_firmware(&firmware, 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 (rem = firmware->size; rem > 0; rem -= (dev->i2c_write_max - 1)) {
<------><------>len = min(dev->i2c_write_max - 1, rem);
<------><------>ret = regmap_bulk_write(dev->regmap[0], 0xf6,
<------><------><------><------><------>&firmware->data[firmware->size - rem],
<------><------><------><------><------>len);
<------><------>if (ret) {
<------><------><------>dev_err(&client->dev, "firmware download failed %d\n",
<------><------><------><------>ret);
<------><------><------>goto err_release_firmware;
<------><------>}
<------>}
 
<------>/* Parity check of firmware */
<------>ret = regmap_read(dev->regmap[0], 0xf8, &utmp);
<------>if (ret)
<------><------>goto err_release_firmware;
<------>if (utmp & 0x10) {
<------><------>ret = -EINVAL;
<------><------>dev_err(&client->dev, "firmware did not run\n");
<------><------>goto err_release_firmware;
<------>}
 
<------>ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
<------>if (ret)
<------><------>goto err_release_firmware;
 
<------>release_firmware(firmware);
warm:
<------>/* TS config */
<------>switch (dev->ts_mode) {
<------>case SERIAL_TS_MODE:
<------><------>utmp = 0x1d;
<------><------>break;
<------>case PARALLEL_TS_MODE:
<------><------>utmp = 0x00;
<------><------>break;
<------>default:
<------><------>ret = -EINVAL;
<------><------>goto err;
<------>}
<------>ret = regmap_write(dev->regmap[2], 0x08, utmp);
<------>if (ret)
<------><------>goto err;
 
<------>switch (dev->ts_clk) {
<------>case VARIABLE_TS_CLOCK:
<------><------>utmp = 0xe3;
<------><------>break;
<------>case FIXED_TS_CLOCK:
<------><------>utmp = 0xe1;
<------><------>break;
<------>default:
<------><------>ret = -EINVAL;
<------><------>goto err;
<------>}
<------>ret = regmap_write(dev->regmap[0], 0xd9, utmp);
<------>if (ret)
<------><------>goto err;
 
<------>dev->active = true;
 
<------>return 0;
err_release_firmware:
<------>release_firmware(firmware);
err:
<------>dev_dbg(&client->dev, "failed=%d\n", ret);
<------>return ret;
}
 
static int mn88472_sleep(struct dvb_frontend *fe)
{
<------>struct i2c_client *client = fe->demodulator_priv;
<------>struct mn88472_dev *dev = i2c_get_clientdata(client);
<------>int ret;
 
<------>dev_dbg(&client->dev, "\n");
 
<------>/* Power down */
<------>ret = regmap_write(dev->regmap[2], 0x0c, 0x30);
<------>if (ret)
<------><------>goto err;
<------>ret = regmap_write(dev->regmap[2], 0x0b, 0x30);
<------>if (ret)
<------><------>goto err;
<------>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 mn88472_ops = {
<------>.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
<------>.info = {
<------><------>.name = "Panasonic MN88472",
<------><------>.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 = mn88472_get_tune_settings,
 
<------>.init = mn88472_init,
<------>.sleep = mn88472_sleep,
 
<------>.set_frontend = mn88472_set_frontend,
 
<------>.read_status = mn88472_read_status,
};
 
static struct dvb_frontend *mn88472_get_dvb_frontend(struct i2c_client *client)
{
<------>struct mn88472_dev *dev = i2c_get_clientdata(client);
 
<------>dev_dbg(&client->dev, "\n");
 
<------>return &dev->fe;
}
 
static int mn88472_probe(struct i2c_client *client,
<------><------><------> const struct i2c_device_id *id)
{
<------>struct mn88472_config *pdata = client->dev.platform_data;
<------>struct mn88472_dev *dev;
<------>struct dtv_frontend_properties *c;
<------>int ret;
<------>unsigned int utmp;
<------>static const struct regmap_config regmap_config = {
<------><------>.reg_bits = 8,
<------><------>.val_bits = 8,
<------>};
 
<------>dev_dbg(&client->dev, "\n");
 
<------>dev = kzalloc(sizeof(*dev), GFP_KERNEL);
<------>if (!dev) {
<------><------>ret = -ENOMEM;
<------><------>goto err;
<------>}
 
<------>dev->i2c_write_max = pdata->i2c_wr_max ? pdata->i2c_wr_max : ~0;
<------>dev->clk = pdata->xtal;
<------>dev->ts_mode = pdata->ts_mode;
<------>dev->ts_clk = pdata->ts_clock;
<------>dev->client[0] = client;
<------>dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_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], &regmap_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], &regmap_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, &utmp);
<------>if (ret)
<------><------>goto err_regmap_2_regmap_exit;
 
<------>dev_dbg(&client->dev, "chip id=%02x\n", utmp);
 
<------>if (utmp != 0x02) {
<------><------>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->fe.ops, &mn88472_ops, sizeof(struct dvb_frontend_ops));
<------>dev->fe.demodulator_priv = client;
<------>*pdata->fe = &dev->fe;
<------>i2c_set_clientdata(client, dev);
 
<------>/* Init stats to indicate which stats are supported */
<------>c = &dev->fe.dtv_property_cache;
<------>c->strength.len = 1;
<------>c->cnr.len = 1;
<------>c->block_error.len = 1;
<------>c->block_count.len = 1;
 
<------>/* Setup callbacks */
<------>pdata->get_dvb_frontend = mn88472_get_dvb_frontend;
 
<------>dev_info(&client->dev, "Panasonic MN88472 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 mn88472_remove(struct i2c_client *client)
{
<------>struct mn88472_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 mn88472_id_table[] = {
<------>{"mn88472", 0},
<------>{}
};
MODULE_DEVICE_TABLE(i2c, mn88472_id_table);
 
static struct i2c_driver mn88472_driver = {
<------>.driver = {
<------><------>.name = "mn88472",
<------><------>.suppress_bind_attrs = true,
<------>},
<------>.probe    = mn88472_probe,
<------>.remove   = mn88472_remove,
<------>.id_table = mn88472_id_table,
};
 
module_i2c_driver(mn88472_driver);
 
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Panasonic MN88472 DVB-T/T2/C demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(MN88472_FIRMWARE);