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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Silicon Labs Si2168 DVB-T/T2/C demodulator driver4 *5 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>6 */7 8#include <linux/delay.h>9 10#include "si2168_priv.h"11 12static const struct dvb_frontend_ops si2168_ops;13 14static void cmd_init(struct si2168_cmd *cmd, const u8 *buf, int wlen, int rlen)15{16 memcpy(cmd->args, buf, wlen);17 cmd->wlen = wlen;18 cmd->rlen = rlen;19}20 21/* execute firmware command */22static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)23{24 struct si2168_dev *dev = i2c_get_clientdata(client);25 int ret;26 unsigned long timeout;27 28 mutex_lock(&dev->i2c_mutex);29 30 if (cmd->wlen) {31 /* write cmd and args for firmware */32 ret = i2c_master_send(client, cmd->args, cmd->wlen);33 if (ret < 0) {34 goto err_mutex_unlock;35 } else if (ret != cmd->wlen) {36 ret = -EREMOTEIO;37 goto err_mutex_unlock;38 }39 }40 41 if (cmd->rlen) {42 /* wait cmd execution terminate */43 #define TIMEOUT 7044 timeout = jiffies + msecs_to_jiffies(TIMEOUT);45 while (!time_after(jiffies, timeout)) {46 ret = i2c_master_recv(client, cmd->args, cmd->rlen);47 if (ret < 0) {48 goto err_mutex_unlock;49 } else if (ret != cmd->rlen) {50 ret = -EREMOTEIO;51 goto err_mutex_unlock;52 }53 54 /* firmware ready? */55 if ((cmd->args[0] >> 7) & 0x01)56 break;57 }58 59 dev_dbg(&client->dev, "cmd execution took %d ms\n",60 jiffies_to_msecs(jiffies) -61 (jiffies_to_msecs(timeout) - TIMEOUT));62 63 /* error bit set? */64 if ((cmd->args[0] >> 6) & 0x01) {65 ret = -EREMOTEIO;66 goto err_mutex_unlock;67 }68 69 if (!((cmd->args[0] >> 7) & 0x01)) {70 ret = -ETIMEDOUT;71 goto err_mutex_unlock;72 }73 }74 75 mutex_unlock(&dev->i2c_mutex);76 return 0;77err_mutex_unlock:78 mutex_unlock(&dev->i2c_mutex);79 dev_dbg(&client->dev, "failed=%d\n", ret);80 return ret;81}82 83static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)84{85 struct i2c_client *client = fe->demodulator_priv;86 struct si2168_dev *dev = i2c_get_clientdata(client);87 struct si2168_cmd cmd;88 int ret = 0;89 90 dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire);91 92 /* set manual value */93 if (dev->ts_mode & SI2168_TS_CLK_MANUAL) {94 cmd_init(&cmd, "\x14\x00\x0d\x10\xe8\x03", 6, 4);95 ret = si2168_cmd_execute(client, &cmd);96 if (ret)97 return ret;98 }99 /* set TS_MODE property */100 cmd_init(&cmd, "\x14\x00\x01\x10\x10\x00", 6, 4);101 if (dev->ts_mode & SI2168_TS_CLK_MANUAL)102 cmd.args[4] = SI2168_TS_CLK_MANUAL;103 if (acquire)104 cmd.args[4] |= dev->ts_mode;105 else106 cmd.args[4] |= SI2168_TS_TRISTATE;107 if (dev->ts_clock_gapped)108 cmd.args[4] |= 0x40;109 ret = si2168_cmd_execute(client, &cmd);110 111 return ret;112}113 114static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)115{116 struct i2c_client *client = fe->demodulator_priv;117 struct si2168_dev *dev = i2c_get_clientdata(client);118 struct dtv_frontend_properties *c = &fe->dtv_property_cache;119 int ret, i;120 unsigned int utmp, utmp1, utmp2;121 struct si2168_cmd cmd;122 123 *status = 0;124 125 if (!dev->active) {126 ret = -EAGAIN;127 goto err;128 }129 130 switch (c->delivery_system) {131 case SYS_DVBT:132 cmd_init(&cmd, "\xa0\x01", 2, 13);133 break;134 case SYS_DVBC_ANNEX_A:135 cmd_init(&cmd, "\x90\x01", 2, 9);136 break;137 case SYS_DVBT2:138 cmd_init(&cmd, "\x50\x01", 2, 14);139 break;140 default:141 ret = -EINVAL;142 goto err;143 }144 145 ret = si2168_cmd_execute(client, &cmd);146 if (ret)147 goto err;148 149 switch ((cmd.args[2] >> 1) & 0x03) {150 case 0x01:151 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;152 break;153 case 0x03:154 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |155 FE_HAS_SYNC | FE_HAS_LOCK;156 break;157 }158 159 dev->fe_status = *status;160 161 if (*status & FE_HAS_LOCK) {162 c->cnr.len = 1;163 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;164 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;165 } else {166 c->cnr.len = 1;167 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;168 }169 170 dev_dbg(&client->dev, "status=%02x args=%*ph\n",171 *status, cmd.rlen, cmd.args);172 173 /* BER */174 if (*status & FE_HAS_VITERBI) {175 cmd_init(&cmd, "\x82\x00", 2, 3);176 ret = si2168_cmd_execute(client, &cmd);177 if (ret)178 goto err;179 180 /*181 * Firmware returns [0, 255] mantissa and [0, 8] exponent.182 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8183 */184 utmp = clamp(8 - cmd.args[1], 0, 8);185 for (i = 0, utmp1 = 1; i < utmp; i++)186 utmp1 = utmp1 * 10;187 188 utmp1 = cmd.args[2] * utmp1;189 utmp2 = 100000000; /* 10^8 */190 191 dev_dbg(&client->dev,192 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n",193 utmp1, utmp2, cmd.args[2], cmd.args[1]);194 195 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;196 c->post_bit_error.stat[0].uvalue += utmp1;197 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;198 c->post_bit_count.stat[0].uvalue += utmp2;199 } else {200 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;201 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;202 }203 204 /* UCB */205 if (*status & FE_HAS_SYNC) {206 cmd_init(&cmd, "\x84\x01", 2, 3);207 ret = si2168_cmd_execute(client, &cmd);208 if (ret)209 goto err;210 211 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;212 dev_dbg(&client->dev, "block_error=%u\n", utmp1);213 214 /* Sometimes firmware returns bogus value */215 if (utmp1 == 0xffff)216 utmp1 = 0;217 218 c->block_error.stat[0].scale = FE_SCALE_COUNTER;219 c->block_error.stat[0].uvalue += utmp1;220 } else {221 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;222 }223 224 return 0;225err:226 dev_dbg(&client->dev, "failed=%d\n", ret);227 return ret;228}229 230static int si2168_set_frontend(struct dvb_frontend *fe)231{232 struct i2c_client *client = fe->demodulator_priv;233 struct si2168_dev *dev = i2c_get_clientdata(client);234 struct dtv_frontend_properties *c = &fe->dtv_property_cache;235 int ret;236 struct si2168_cmd cmd;237 u8 bandwidth, delivery_system;238 239 dev_dbg(&client->dev,240 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",241 c->delivery_system, c->modulation, c->frequency,242 c->bandwidth_hz, c->symbol_rate, c->inversion,243 c->stream_id);244 245 if (!dev->active) {246 ret = -EAGAIN;247 goto err;248 }249 250 switch (c->delivery_system) {251 case SYS_DVBT:252 delivery_system = 0x20;253 break;254 case SYS_DVBC_ANNEX_A:255 delivery_system = 0x30;256 break;257 case SYS_DVBT2:258 delivery_system = 0x70;259 break;260 default:261 ret = -EINVAL;262 goto err;263 }264 265 if (c->bandwidth_hz == 0) {266 ret = -EINVAL;267 goto err;268 } else if (c->bandwidth_hz <= 2000000)269 bandwidth = 0x02;270 else if (c->bandwidth_hz <= 5000000)271 bandwidth = 0x05;272 else if (c->bandwidth_hz <= 6000000)273 bandwidth = 0x06;274 else if (c->bandwidth_hz <= 7000000)275 bandwidth = 0x07;276 else if (c->bandwidth_hz <= 8000000)277 bandwidth = 0x08;278 else if (c->bandwidth_hz <= 9000000)279 bandwidth = 0x09;280 else if (c->bandwidth_hz <= 10000000)281 bandwidth = 0x0a;282 else283 bandwidth = 0x0f;284 285 /* program tuner */286 if (fe->ops.tuner_ops.set_params) {287 ret = fe->ops.tuner_ops.set_params(fe);288 if (ret)289 goto err;290 }291 292 cmd_init(&cmd, "\x88\x02\x02\x02\x02", 5, 5);293 ret = si2168_cmd_execute(client, &cmd);294 if (ret)295 goto err;296 297 /* that has no big effect */298 if (c->delivery_system == SYS_DVBT)299 cmd_init(&cmd, "\x89\x21\x06\x11\xff\x98", 6, 3);300 else if (c->delivery_system == SYS_DVBC_ANNEX_A)301 cmd_init(&cmd, "\x89\x21\x06\x11\x89\xf0", 6, 3);302 else if (c->delivery_system == SYS_DVBT2)303 cmd_init(&cmd, "\x89\x21\x06\x11\x89\x20", 6, 3);304 ret = si2168_cmd_execute(client, &cmd);305 if (ret)306 goto err;307 308 if (c->delivery_system == SYS_DVBT2) {309 /* select PLP */310 cmd.args[0] = 0x52;311 cmd.args[1] = c->stream_id & 0xff;312 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;313 cmd.wlen = 3;314 cmd.rlen = 1;315 ret = si2168_cmd_execute(client, &cmd);316 if (ret)317 goto err;318 }319 320 cmd_init(&cmd, "\x51\x03", 2, 12);321 ret = si2168_cmd_execute(client, &cmd);322 if (ret)323 goto err;324 325 cmd_init(&cmd, "\x12\x08\x04", 3, 3);326 ret = si2168_cmd_execute(client, &cmd);327 if (ret)328 goto err;329 330 cmd_init(&cmd, "\x14\x00\x0c\x10\x12\x00", 6, 4);331 ret = si2168_cmd_execute(client, &cmd);332 if (ret)333 goto err;334 335 cmd_init(&cmd, "\x14\x00\x06\x10\x24\x00", 6, 4);336 ret = si2168_cmd_execute(client, &cmd);337 if (ret)338 goto err;339 340 cmd_init(&cmd, "\x14\x00\x07\x10\x00\x24", 6, 4);341 ret = si2168_cmd_execute(client, &cmd);342 if (ret)343 goto err;344 345 cmd_init(&cmd, "\x14\x00\x0a\x10\x00\x00", 6, 4);346 cmd.args[4] = delivery_system | bandwidth;347 if (dev->spectral_inversion)348 cmd.args[5] |= 1;349 ret = si2168_cmd_execute(client, &cmd);350 if (ret)351 goto err;352 353 /* set DVB-C symbol rate */354 if (c->delivery_system == SYS_DVBC_ANNEX_A) {355 cmd_init(&cmd, "\x14\x00\x02\x11\x00\x00", 6, 4);356 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;357 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;358 ret = si2168_cmd_execute(client, &cmd);359 if (ret)360 goto err;361 }362 363 cmd_init(&cmd, "\x14\x00\x0f\x10\x10\x00", 6, 4);364 ret = si2168_cmd_execute(client, &cmd);365 if (ret)366 goto err;367 368 cmd_init(&cmd, "\x14\x00\x09\x10\xe3\x08", 6, 4);369 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;370 ret = si2168_cmd_execute(client, &cmd);371 if (ret)372 goto err;373 374 cmd_init(&cmd, "\x14\x00\x08\x10\xd7\x05", 6, 4);375 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;376 ret = si2168_cmd_execute(client, &cmd);377 if (ret)378 goto err;379 380 cmd_init(&cmd, "\x14\x00\x01\x12\x00\x00", 6, 4);381 ret = si2168_cmd_execute(client, &cmd);382 if (ret)383 goto err;384 385 cmd_init(&cmd, "\x14\x00\x01\x03\x0c\x00", 6, 4);386 ret = si2168_cmd_execute(client, &cmd);387 if (ret)388 goto err;389 390 cmd_init(&cmd, "\x85", 1, 1);391 ret = si2168_cmd_execute(client, &cmd);392 if (ret)393 goto err;394 395 dev->delivery_system = c->delivery_system;396 397 /* enable ts bus */398 ret = si2168_ts_bus_ctrl(fe, 1);399 if (ret)400 goto err;401 402 return 0;403err:404 dev_dbg(&client->dev, "failed=%d\n", ret);405 return ret;406}407 408static int si2168_init(struct dvb_frontend *fe)409{410 struct i2c_client *client = fe->demodulator_priv;411 struct si2168_dev *dev = i2c_get_clientdata(client);412 struct dtv_frontend_properties *c = &fe->dtv_property_cache;413 int ret, len, remaining;414 const struct firmware *fw;415 struct si2168_cmd cmd;416 417 dev_dbg(&client->dev, "\n");418 419 /* initialize */420 cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00",421 13, 0);422 ret = si2168_cmd_execute(client, &cmd);423 if (ret)424 goto err;425 426 if (dev->warm) {427 /* resume */428 cmd_init(&cmd, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8, 1);429 ret = si2168_cmd_execute(client, &cmd);430 if (ret)431 goto err;432 433 udelay(100);434 cmd_init(&cmd, "\x85", 1, 1);435 ret = si2168_cmd_execute(client, &cmd);436 if (ret)437 goto err;438 439 goto warm;440 }441 442 /* power up */443 cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1);444 ret = si2168_cmd_execute(client, &cmd);445 if (ret)446 goto err;447 448 /* request the firmware, this will block and timeout */449 ret = request_firmware(&fw, dev->firmware_name, &client->dev);450 if (ret) {451 dev_err(&client->dev,452 "firmware file '%s' not found\n",453 dev->firmware_name);454 goto err_release_firmware;455 }456 457 dev_info(&client->dev, "downloading firmware from file '%s'\n",458 dev->firmware_name);459 460 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {461 /* firmware is in the new format */462 for (remaining = fw->size; remaining > 0; remaining -= 17) {463 len = fw->data[fw->size - remaining];464 if (len > SI2168_ARGLEN) {465 ret = -EINVAL;466 break;467 }468 cmd_init(&cmd, &fw->data[(fw->size - remaining) + 1],469 len, 1);470 ret = si2168_cmd_execute(client, &cmd);471 if (ret)472 break;473 }474 } else if (fw->size % 8 == 0) {475 /* firmware is in the old format */476 for (remaining = fw->size; remaining > 0; remaining -= 8) {477 cmd_init(&cmd, &fw->data[fw->size - remaining], 8, 1);478 ret = si2168_cmd_execute(client, &cmd);479 if (ret)480 break;481 }482 } else {483 /* bad or unknown firmware format */484 ret = -EINVAL;485 }486 487 if (ret) {488 dev_err(&client->dev, "firmware download failed %d\n", ret);489 goto err_release_firmware;490 }491 492 release_firmware(fw);493 494 cmd_init(&cmd, "\x01\x01", 2, 1);495 ret = si2168_cmd_execute(client, &cmd);496 if (ret)497 goto err;498 499 /* query firmware version */500 cmd_init(&cmd, "\x11", 1, 10);501 ret = si2168_cmd_execute(client, &cmd);502 if (ret)503 goto err;504 505 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |506 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;507 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",508 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,509 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);510 511 /* set ts mode */512 ret = si2168_ts_bus_ctrl(fe, 1);513 if (ret)514 goto err;515 516 dev->warm = true;517 dev->initialized = true;518warm:519 /* Init stats here to indicate which stats are supported */520 c->cnr.len = 1;521 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;522 c->post_bit_error.len = 1;523 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;524 c->post_bit_count.len = 1;525 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;526 c->block_error.len = 1;527 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;528 529 dev->active = true;530 531 return 0;532err_release_firmware:533 release_firmware(fw);534err:535 dev_dbg(&client->dev, "failed=%d\n", ret);536 return ret;537}538 539static int si2168_resume(struct dvb_frontend *fe)540{541 struct i2c_client *client = fe->demodulator_priv;542 struct si2168_dev *dev = i2c_get_clientdata(client);543 544 /*545 * check whether si2168_init() has been called successfully546 * outside of a resume cycle. Only call it (and load firmware)547 * in this case. si2168_init() is only called during resume548 * once the device has actually been used. Otherwise, leave the549 * device untouched.550 */551 if (dev->initialized) {552 dev_dbg(&client->dev, "previously initialized, call si2168_init()\n");553 return si2168_init(fe);554 }555 dev_dbg(&client->dev, "not initialized yet, skipping init on resume\n");556 return 0;557}558 559static int si2168_sleep(struct dvb_frontend *fe)560{561 struct i2c_client *client = fe->demodulator_priv;562 struct si2168_dev *dev = i2c_get_clientdata(client);563 int ret;564 struct si2168_cmd cmd;565 566 dev_dbg(&client->dev, "\n");567 568 dev->active = false;569 570 /* tri-state data bus */571 ret = si2168_ts_bus_ctrl(fe, 0);572 if (ret)573 goto err;574 575 /* Firmware later than B 4.0-11 loses warm state during sleep */576 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))577 dev->warm = false;578 579 cmd_init(&cmd, "\x13", 1, 0);580 ret = si2168_cmd_execute(client, &cmd);581 if (ret)582 goto err;583 584 return 0;585err:586 dev_dbg(&client->dev, "failed=%d\n", ret);587 return ret;588}589 590static int si2168_get_tune_settings(struct dvb_frontend *fe,591 struct dvb_frontend_tune_settings *s)592{593 s->min_delay_ms = 900;594 595 return 0;596}597 598static int si2168_select(struct i2c_mux_core *muxc, u32 chan)599{600 struct i2c_client *client = i2c_mux_priv(muxc);601 int ret;602 struct si2168_cmd cmd;603 604 /* open I2C gate */605 cmd_init(&cmd, "\xc0\x0d\x01", 3, 0);606 ret = si2168_cmd_execute(client, &cmd);607 if (ret)608 goto err;609 610 return 0;611err:612 dev_dbg(&client->dev, "failed=%d\n", ret);613 return ret;614}615 616static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)617{618 struct i2c_client *client = i2c_mux_priv(muxc);619 int ret;620 struct si2168_cmd cmd;621 622 /* close I2C gate */623 cmd_init(&cmd, "\xc0\x0d\x00", 3, 0);624 ret = si2168_cmd_execute(client, &cmd);625 if (ret)626 goto err;627 628 return 0;629err:630 dev_dbg(&client->dev, "failed=%d\n", ret);631 return ret;632}633 634static const struct dvb_frontend_ops si2168_ops = {635 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},636 .info = {637 .name = "Silicon Labs Si2168",638 .frequency_min_hz = 48 * MHz,639 .frequency_max_hz = 870 * MHz,640 .frequency_stepsize_hz = 62500,641 .symbol_rate_min = 1000000,642 .symbol_rate_max = 7200000,643 .caps = FE_CAN_FEC_1_2 |644 FE_CAN_FEC_2_3 |645 FE_CAN_FEC_3_4 |646 FE_CAN_FEC_5_6 |647 FE_CAN_FEC_7_8 |648 FE_CAN_FEC_AUTO |649 FE_CAN_QPSK |650 FE_CAN_QAM_16 |651 FE_CAN_QAM_32 |652 FE_CAN_QAM_64 |653 FE_CAN_QAM_128 |654 FE_CAN_QAM_256 |655 FE_CAN_QAM_AUTO |656 FE_CAN_TRANSMISSION_MODE_AUTO |657 FE_CAN_GUARD_INTERVAL_AUTO |658 FE_CAN_HIERARCHY_AUTO |659 FE_CAN_MUTE_TS |660 FE_CAN_2G_MODULATION |661 FE_CAN_MULTISTREAM662 },663 664 .get_tune_settings = si2168_get_tune_settings,665 666 .init = si2168_init,667 .sleep = si2168_sleep,668 .resume = si2168_resume,669 670 .set_frontend = si2168_set_frontend,671 672 .read_status = si2168_read_status,673};674 675static int si2168_probe(struct i2c_client *client)676{677 struct si2168_config *config = client->dev.platform_data;678 struct si2168_dev *dev;679 int ret;680 struct si2168_cmd cmd;681 682 dev_dbg(&client->dev, "\n");683 684 dev = kzalloc(sizeof(*dev), GFP_KERNEL);685 if (!dev) {686 ret = -ENOMEM;687 goto err;688 }689 690 i2c_set_clientdata(client, dev);691 mutex_init(&dev->i2c_mutex);692 693 /* Initialize */694 cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00",695 13, 0);696 ret = si2168_cmd_execute(client, &cmd);697 if (ret)698 goto err_kfree;699 700 /* Power up */701 cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1);702 ret = si2168_cmd_execute(client, &cmd);703 if (ret)704 goto err_kfree;705 706 /* Query chip revision */707 cmd_init(&cmd, "\x02", 1, 13);708 ret = si2168_cmd_execute(client, &cmd);709 if (ret)710 goto err_kfree;711 712 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |713 cmd.args[3] << 8 | cmd.args[4] << 0;714 715 switch (dev->chip_id) {716 case SI2168_CHIP_ID_A20:717 dev->firmware_name = SI2168_A20_FIRMWARE;718 break;719 case SI2168_CHIP_ID_A30:720 dev->firmware_name = SI2168_A30_FIRMWARE;721 break;722 case SI2168_CHIP_ID_B40:723 dev->firmware_name = SI2168_B40_FIRMWARE;724 break;725 case SI2168_CHIP_ID_D60:726 dev->firmware_name = SI2168_D60_FIRMWARE;727 break;728 default:729 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",730 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);731 ret = -ENODEV;732 goto err_kfree;733 }734 735 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |736 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;737 738 /* create mux i2c adapter for tuner */739 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,740 1, 0, I2C_MUX_LOCKED,741 si2168_select, si2168_deselect);742 if (!dev->muxc) {743 ret = -ENOMEM;744 goto err_kfree;745 }746 dev->muxc->priv = client;747 ret = i2c_mux_add_adapter(dev->muxc, 0, 0);748 if (ret)749 goto err_kfree;750 751 /* create dvb_frontend */752 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));753 dev->fe.demodulator_priv = client;754 *config->i2c_adapter = dev->muxc->adapter[0];755 *config->fe = &dev->fe;756 dev->ts_mode = config->ts_mode;757 dev->ts_clock_inv = config->ts_clock_inv;758 dev->ts_clock_gapped = config->ts_clock_gapped;759 dev->spectral_inversion = config->spectral_inversion;760 761 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",762 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,763 dev->version >> 8 & 0xff);764 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",765 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,766 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);767 768 return 0;769err_kfree:770 kfree(dev);771err:772 dev_warn(&client->dev, "probe failed = %d\n", ret);773 return ret;774}775 776static void si2168_remove(struct i2c_client *client)777{778 struct si2168_dev *dev = i2c_get_clientdata(client);779 780 dev_dbg(&client->dev, "\n");781 782 i2c_mux_del_adapters(dev->muxc);783 784 dev->fe.ops.release = NULL;785 dev->fe.demodulator_priv = NULL;786 787 kfree(dev);788}789 790static const struct i2c_device_id si2168_id_table[] = {791 { "si2168" },792 {}793};794MODULE_DEVICE_TABLE(i2c, si2168_id_table);795 796static struct i2c_driver si2168_driver = {797 .driver = {798 .name = "si2168",799 .suppress_bind_attrs = true,800 },801 .probe = si2168_probe,802 .remove = si2168_remove,803 .id_table = si2168_id_table,804};805 806module_i2c_driver(si2168_driver);807 808MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");809MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");810MODULE_LICENSE("GPL");811MODULE_FIRMWARE(SI2168_A20_FIRMWARE);812MODULE_FIRMWARE(SI2168_A30_FIRMWARE);813MODULE_FIRMWARE(SI2168_B40_FIRMWARE);814MODULE_FIRMWARE(SI2168_D60_FIRMWARE);815