drivers/media/dvb-frontends/si2168.c

   1 /*
   2  * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
   3  *
   4  * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  */
  16
  17 #include "si2168_priv.h"
  18
  19 static const struct dvb_frontend_ops si2168_ops;
  20
  21 /* execute firmware command */
  22 static int si2168_cmd_execute(struct si2168 *s, struct si2168_cmd *cmd)
  23 {
  24         int ret;
  25         unsigned long timeout;
  26
  27         mutex_lock(&s->i2c_mutex);
  28
  29         if (cmd->wlen) {
  30                 /* write cmd and args for firmware */
  31                 ret = i2c_master_send(s->client, cmd->args, cmd->wlen);
  32                 if (ret < 0) {
  33                         goto err_mutex_unlock;
  34                 } else if (ret != cmd->wlen) {
  35                         ret = -EREMOTEIO;
  36                         goto err_mutex_unlock;
  37                 }
  38         }
  39
  40         if (cmd->rlen) {
  41                 /* wait cmd execution terminate */
  42                 #define TIMEOUT 50
  43                 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
  44                 while (!time_after(jiffies, timeout)) {
  45                         ret = i2c_master_recv(s->client, cmd->args, cmd->rlen);
  46                         if (ret < 0) {
  47                                 goto err_mutex_unlock;
  48                         } else if (ret != cmd->rlen) {
  49                                 ret = -EREMOTEIO;
  50                                 goto err_mutex_unlock;
  51                         }
  52
  53                         /* firmware ready? */
  54                         if ((cmd->args[0] >> 7) & 0x01)
  55                                 break;
  56                 }
  57
  58                 dev_dbg(&s->client->dev, "cmd execution took %d ms\n",
  59                                 jiffies_to_msecs(jiffies) -
  60                                 (jiffies_to_msecs(timeout) - TIMEOUT));
  61
  62                 if (!((cmd->args[0] >> 7) & 0x01)) {
  63                         ret = -ETIMEDOUT;
  64                         goto err_mutex_unlock;
  65                 }
  66         }
  67
  68         ret = 0;
  69
  70 err_mutex_unlock:
  71         mutex_unlock(&s->i2c_mutex);
  72         if (ret)
  73                 goto err;
  74
  75         return 0;
  76 err:
  77         dev_dbg(&s->client->dev, "failed=%d\n", ret);
  78         return ret;
  79 }
  80
  81 static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status)
  82 {
  83         struct si2168 *s = fe->demodulator_priv;
  84         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  85         int ret;
  86         struct si2168_cmd cmd;
  87
  88         *status = 0;
  89
  90         if (!s->active) {
  91                 ret = -EAGAIN;
  92                 goto err;
  93         }
  94
  95         switch (c->delivery_system) {
  96         case SYS_DVBT:
  97                 memcpy(cmd.args, "\xa0\x01", 2);
  98                 cmd.wlen = 2;
  99                 cmd.rlen = 13;
 100                 break;
 101         case SYS_DVBC_ANNEX_A:
 102                 memcpy(cmd.args, "\x90\x01", 2);
 103                 cmd.wlen = 2;
 104                 cmd.rlen = 9;
 105                 break;
 106         case SYS_DVBT2:
 107                 memcpy(cmd.args, "\x50\x01", 2);
 108                 cmd.wlen = 2;
 109                 cmd.rlen = 14;
 110                 break;
 111         default:
 112                 ret = -EINVAL;
 113                 goto err;
 114         }
 115
 116         ret = si2168_cmd_execute(s, &cmd);
 117         if (ret)
 118                 goto err;
 119
 120         /*
 121          * Possible values seen, in order from strong signal to weak:
 122          * 16 0001 0110 full lock
 123          * 1e 0001 1110 partial lock
 124          * 1a 0001 1010 partial lock
 125          * 18 0001 1000 no lock
 126          *
 127          * [b3:b1] lock bits
 128          * [b4] statistics ready? Set in a few secs after lock is gained.
 129          */
 130
 131         switch ((cmd.args[2] >> 1) & 0x03) {
 132         case 0x01:
 133                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 134                 break;
 135         case 0x03:
 136                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 137                                 FE_HAS_SYNC | FE_HAS_LOCK;
 138                 break;
 139         }
 140
 141         s->fe_status = *status;
 142
 143         if (*status & FE_HAS_LOCK) {
 144                 c->cnr.len = 1;
 145                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 146                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 147         } else {
 148                 c->cnr.len = 1;
 149                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 150         }
 151
 152         dev_dbg(&s->client->dev, "status=%02x args=%*ph\n",
 153                         *status, cmd.rlen, cmd.args);
 154
 155         return 0;
 156 err:
 157         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 158         return ret;
 159 }
 160
 161 static int si2168_set_frontend(struct dvb_frontend *fe)
 162 {
 163         struct si2168 *s = fe->demodulator_priv;
 164         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 165         int ret;
 166         struct si2168_cmd cmd;
 167         u8 bandwidth, delivery_system;
 168
 169         dev_dbg(&s->client->dev,
 170                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u, stream_id=%d\n",
 171                         c->delivery_system, c->modulation,
 172                         c->frequency, c->bandwidth_hz, c->symbol_rate,
 173                         c->inversion, c->stream_id);
 174
 175         if (!s->active) {
 176                 ret = -EAGAIN;
 177                 goto err;
 178         }
 179
 180         switch (c->delivery_system) {
 181         case SYS_DVBT:
 182                 delivery_system = 0x20;
 183                 break;
 184         case SYS_DVBC_ANNEX_A:
 185                 delivery_system = 0x30;
 186                 break;
 187         case SYS_DVBT2:
 188                 delivery_system = 0x70;
 189                 break;
 190         default:
 191                 ret = -EINVAL;
 192                 goto err;
 193         }
 194
 195         if (c->bandwidth_hz <= 5000000)
 196                 bandwidth = 0x05;
 197         else if (c->bandwidth_hz <= 6000000)
 198                 bandwidth = 0x06;
 199         else if (c->bandwidth_hz <= 7000000)
 200                 bandwidth = 0x07;
 201         else if (c->bandwidth_hz <= 8000000)
 202                 bandwidth = 0x08;
 203         else if (c->bandwidth_hz <= 9000000)
 204                 bandwidth = 0x09;
 205         else if (c->bandwidth_hz <= 10000000)
 206                 bandwidth = 0x0a;
 207         else
 208                 bandwidth = 0x0f;
 209
 210         /* program tuner */
 211         if (fe->ops.tuner_ops.set_params) {
 212                 ret = fe->ops.tuner_ops.set_params(fe);
 213                 if (ret)
 214                         goto err;
 215         }
 216
 217         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 218         cmd.wlen = 5;
 219         cmd.rlen = 5;
 220         ret = si2168_cmd_execute(s, &cmd);
 221         if (ret)
 222                 goto err;
 223
 224         /* that has no big effect */
 225         if (c->delivery_system == SYS_DVBT)
 226                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 227         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 228                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 229         else if (c->delivery_system == SYS_DVBT2)
 230                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 231         cmd.wlen = 6;
 232         cmd.rlen = 3;
 233         ret = si2168_cmd_execute(s, &cmd);
 234         if (ret)
 235                 goto err;
 236
 237         if (c->delivery_system == SYS_DVBT2) {
 238                 /* select PLP */
 239                 cmd.args[0] = 0x52;
 240                 cmd.args[1] = c->stream_id & 0xff;
 241                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 242                 cmd.wlen = 3;
 243                 cmd.rlen = 1;
 244                 ret = si2168_cmd_execute(s, &cmd);
 245                 if (ret)
 246                         goto err;
 247         }
 248
 249         memcpy(cmd.args, "\x51\x03", 2);
 250         cmd.wlen = 2;
 251         cmd.rlen = 12;
 252         ret = si2168_cmd_execute(s, &cmd);
 253         if (ret)
 254                 goto err;
 255
 256         memcpy(cmd.args, "\x12\x08\x04", 3);
 257         cmd.wlen = 3;
 258         cmd.rlen = 3;
 259         ret = si2168_cmd_execute(s, &cmd);
 260         if (ret)
 261                 goto err;
 262
 263         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 264         cmd.wlen = 6;
 265         cmd.rlen = 4;
 266         ret = si2168_cmd_execute(s, &cmd);
 267         if (ret)
 268                 goto err;
 269
 270         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 271         cmd.wlen = 6;
 272         cmd.rlen = 4;
 273         ret = si2168_cmd_execute(s, &cmd);
 274         if (ret)
 275                 goto err;
 276
 277         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 278         cmd.wlen = 6;
 279         cmd.rlen = 4;
 280         ret = si2168_cmd_execute(s, &cmd);
 281         if (ret)
 282                 goto err;
 283
 284         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 285         cmd.args[4] = delivery_system | bandwidth;
 286         cmd.wlen = 6;
 287         cmd.rlen = 4;
 288         ret = si2168_cmd_execute(s, &cmd);
 289         if (ret)
 290                 goto err;
 291
 292         /* set DVB-C symbol rate */
 293         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 294                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 295                 cmd.args[4] = (c->symbol_rate / 1000) & 0xff;
 296                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 297                 cmd.wlen = 6;
 298                 cmd.rlen = 4;
 299                 ret = si2168_cmd_execute(s, &cmd);
 300                 if (ret)
 301                         goto err;
 302         }
 303
 304         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 305         cmd.wlen = 6;
 306         cmd.rlen = 4;
 307         ret = si2168_cmd_execute(s, &cmd);
 308         if (ret)
 309                 goto err;
 310
 311         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 312         cmd.args[5] |= s->ts_clock_inv ? 0x00 : 0x10;
 313         cmd.wlen = 6;
 314         cmd.rlen = 4;
 315         ret = si2168_cmd_execute(s, &cmd);
 316         if (ret)
 317                 goto err;
 318
 319         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 320         cmd.args[5] |= s->ts_clock_inv ? 0x00 : 0x10;
 321         cmd.wlen = 6;
 322         cmd.rlen = 4;
 323         ret = si2168_cmd_execute(s, &cmd);
 324         if (ret)
 325                 goto err;
 326
 327         memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
 328         cmd.wlen = 6;
 329         cmd.rlen = 4;
 330         ret = si2168_cmd_execute(s, &cmd);
 331         if (ret)
 332                 goto err;
 333
 334         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 335         cmd.wlen = 6;
 336         cmd.rlen = 4;
 337         ret = si2168_cmd_execute(s, &cmd);
 338         if (ret)
 339                 goto err;
 340
 341         memcpy(cmd.args, "\x85", 1);
 342         cmd.wlen = 1;
 343         cmd.rlen = 1;
 344         ret = si2168_cmd_execute(s, &cmd);
 345         if (ret)
 346                 goto err;
 347
 348         s->delivery_system = c->delivery_system;
 349
 350         return 0;
 351 err:
 352         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 353         return ret;
 354 }
 355
 356 static int si2168_init(struct dvb_frontend *fe)
 357 {
 358         struct si2168 *s = fe->demodulator_priv;
 359         int ret, len, remaining;
 360         const struct firmware *fw = NULL;
 361         u8 *fw_file;
 362         const unsigned int i2c_wr_max = 8;
 363         struct si2168_cmd cmd;
 364         unsigned int chip_id;
 365
 366         dev_dbg(&s->client->dev, "\n");
 367
 368         /* initialize */
 369         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 370         cmd.wlen = 13;
 371         cmd.rlen = 0;
 372         ret = si2168_cmd_execute(s, &cmd);
 373         if (ret)
 374                 goto err;
 375
 376         if (s->fw_loaded) {
 377                 /* resume */
 378                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 379                 cmd.wlen = 8;
 380                 cmd.rlen = 1;
 381                 ret = si2168_cmd_execute(s, &cmd);
 382                 if (ret)
 383                         goto err;
 384
 385                 memcpy(cmd.args, "\x85", 1);
 386                 cmd.wlen = 1;
 387                 cmd.rlen = 1;
 388                 ret = si2168_cmd_execute(s, &cmd);
 389                 if (ret)
 390                         goto err;
 391
 392                 goto warm;
 393         }
 394
 395         /* power up */
 396         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 397         cmd.wlen = 8;
 398         cmd.rlen = 1;
 399         ret = si2168_cmd_execute(s, &cmd);
 400         if (ret)
 401                 goto err;
 402
 403         /* query chip revision */
 404         memcpy(cmd.args, "\x02", 1);
 405         cmd.wlen = 1;
 406         cmd.rlen = 13;
 407         ret = si2168_cmd_execute(s, &cmd);
 408         if (ret)
 409                 goto err;
 410
 411         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 412                         cmd.args[4] << 0;
 413
 414         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 415         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 416         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 417
 418         switch (chip_id) {
 419         case SI2168_A20:
 420                 fw_file = SI2168_A20_FIRMWARE;
 421                 break;
 422         case SI2168_A30:
 423                 fw_file = SI2168_A30_FIRMWARE;
 424                 break;
 425         case SI2168_B40:
 426                 fw_file = SI2168_B40_FIRMWARE;
 427                 break;
 428         default:
 429                 dev_err(&s->client->dev,
 430                                 "unknown chip version Si21%d-%c%c%c\n",
 431                                 cmd.args[2], cmd.args[1],
 432                                 cmd.args[3], cmd.args[4]);
 433                 ret = -EINVAL;
 434                 goto err;
 435         }
 436
 437         /* cold state - try to download firmware */
 438         dev_info(&s->client->dev, "found a '%s' in cold state\n",
 439                         si2168_ops.info.name);
 440
 441         /* request the firmware, this will block and timeout */
 442         ret = request_firmware(&fw, fw_file, &s->client->dev);
 443         if (ret) {
 444                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 445                 if (chip_id == SI2168_B40) {
 446                         fw_file = SI2168_B40_FIRMWARE_FALLBACK;
 447                         ret = request_firmware(&fw, fw_file, &s->client->dev);
 448                 }
 449
 450                 if (ret == 0) {
 451                         dev_notice(&s->client->dev,
 452                                         "please install firmware file '%s'\n",
 453                                         SI2168_B40_FIRMWARE);
 454                 } else {
 455                         dev_err(&s->client->dev,
 456                                         "firmware file '%s' not found\n",
 457                                         fw_file);
 458                         goto error_fw_release;
 459                 }
 460         }
 461
 462         dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
 463                         fw_file);
 464
 465         for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) {
 466                 len = remaining;
 467                 if (len > i2c_wr_max)
 468                         len = i2c_wr_max;
 469
 470                 memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 471                 cmd.wlen = len;
 472                 cmd.rlen = 1;
 473                 ret = si2168_cmd_execute(s, &cmd);
 474                 if (ret) {
 475                         dev_err(&s->client->dev,
 476                                         "firmware download failed=%d\n",
 477                                         ret);
 478                         goto error_fw_release;
 479                 }
 480         }
 481
 482         release_firmware(fw);
 483         fw = NULL;
 484
 485         memcpy(cmd.args, "\x01\x01", 2);
 486         cmd.wlen = 2;
 487         cmd.rlen = 1;
 488         ret = si2168_cmd_execute(s, &cmd);
 489         if (ret)
 490                 goto err;
 491
 492         /* set ts mode */
 493         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 494         cmd.args[4] |= s->ts_mode;
 495         cmd.wlen = 6;
 496         cmd.rlen = 4;
 497         ret = si2168_cmd_execute(s, &cmd);
 498         if (ret)
 499                 goto err;
 500
 501         s->fw_loaded = true;
 502
 503         dev_info(&s->client->dev, "found a '%s' in warm state\n",
 504                         si2168_ops.info.name);
 505 warm:
 506         s->active = true;
 507
 508         return 0;
 509
 510 error_fw_release:
 511         release_firmware(fw);
 512 err:
 513         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 514         return ret;
 515 }
 516
 517 static int si2168_sleep(struct dvb_frontend *fe)
 518 {
 519         struct si2168 *s = fe->demodulator_priv;
 520         int ret;
 521         struct si2168_cmd cmd;
 522
 523         dev_dbg(&s->client->dev, "\n");
 524
 525         s->active = false;
 526
 527         memcpy(cmd.args, "\x13", 1);
 528         cmd.wlen = 1;
 529         cmd.rlen = 0;
 530         ret = si2168_cmd_execute(s, &cmd);
 531         if (ret)
 532                 goto err;
 533
 534         return 0;
 535 err:
 536         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 537         return ret;
 538 }
 539
 540 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 541         struct dvb_frontend_tune_settings *s)
 542 {
 543         s->min_delay_ms = 900;
 544
 545         return 0;
 546 }
 547
 548 /*
 549  * I2C gate logic
 550  * We must use unlocked i2c_transfer() here because I2C lock is already taken
 551  * by tuner driver.
 552  */
 553 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 554 {
 555         struct si2168 *s = mux_priv;
 556         int ret;
 557         struct i2c_msg gate_open_msg = {
 558                 .addr = s->client->addr,
 559                 .flags = 0,
 560                 .len = 3,
 561                 .buf = "\xc0\x0d\x01",
 562         };
 563
 564         mutex_lock(&s->i2c_mutex);
 565
 566         /* open tuner I2C gate */
 567         ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1);
 568         if (ret != 1) {
 569                 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret);
 570                 if (ret >= 0)
 571                         ret = -EREMOTEIO;
 572         } else {
 573                 ret = 0;
 574         }
 575
 576         return ret;
 577 }
 578
 579 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 580 {
 581         struct si2168 *s = mux_priv;
 582         int ret;
 583         struct i2c_msg gate_close_msg = {
 584                 .addr = s->client->addr,
 585                 .flags = 0,
 586                 .len = 3,
 587                 .buf = "\xc0\x0d\x00",
 588         };
 589
 590         /* close tuner I2C gate */
 591         ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1);
 592         if (ret != 1) {
 593                 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret);
 594                 if (ret >= 0)
 595                         ret = -EREMOTEIO;
 596         } else {
 597                 ret = 0;
 598         }
 599
 600         mutex_unlock(&s->i2c_mutex);
 601
 602         return ret;
 603 }
 604
 605 static const struct dvb_frontend_ops si2168_ops = {
 606         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 607         .info = {
 608                 .name = "Silicon Labs Si2168",
 609                 .caps = FE_CAN_FEC_1_2 |
 610                         FE_CAN_FEC_2_3 |
 611                         FE_CAN_FEC_3_4 |
 612                         FE_CAN_FEC_5_6 |
 613                         FE_CAN_FEC_7_8 |
 614                         FE_CAN_FEC_AUTO |
 615                         FE_CAN_QPSK |
 616                         FE_CAN_QAM_16 |
 617                         FE_CAN_QAM_32 |
 618                         FE_CAN_QAM_64 |
 619                         FE_CAN_QAM_128 |
 620                         FE_CAN_QAM_256 |
 621                         FE_CAN_QAM_AUTO |
 622                         FE_CAN_TRANSMISSION_MODE_AUTO |
 623                         FE_CAN_GUARD_INTERVAL_AUTO |
 624                         FE_CAN_HIERARCHY_AUTO |
 625                         FE_CAN_MUTE_TS |
 626                         FE_CAN_2G_MODULATION |
 627                         FE_CAN_MULTISTREAM
 628         },
 629
 630         .get_tune_settings = si2168_get_tune_settings,
 631
 632         .init = si2168_init,
 633         .sleep = si2168_sleep,
 634
 635         .set_frontend = si2168_set_frontend,
 636
 637         .read_status = si2168_read_status,
 638 };
 639
 640 static int si2168_probe(struct i2c_client *client,
 641                 const struct i2c_device_id *id)
 642 {
 643         struct si2168_config *config = client->dev.platform_data;
 644         struct si2168 *s;
 645         int ret;
 646
 647         dev_dbg(&client->dev, "\n");
 648
 649         s = kzalloc(sizeof(struct si2168), GFP_KERNEL);
 650         if (!s) {
 651                 ret = -ENOMEM;
 652                 dev_err(&client->dev, "kzalloc() failed\n");
 653                 goto err;
 654         }
 655
 656         s->client = client;
 657         mutex_init(&s->i2c_mutex);
 658
 659         /* create mux i2c adapter for tuner */
 660         s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s,
 661                         0, 0, 0, si2168_select, si2168_deselect);
 662         if (s->adapter == NULL) {
 663                 ret = -ENODEV;
 664                 goto err;
 665         }
 666
 667         /* create dvb_frontend */
 668         memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 669         s->fe.demodulator_priv = s;
 670
 671         *config->i2c_adapter = s->adapter;
 672         *config->fe = &s->fe;
 673         s->ts_mode = config->ts_mode;
 674         s->ts_clock_inv = config->ts_clock_inv;
 675         s->fw_loaded = false;
 676
 677         i2c_set_clientdata(client, s);
 678
 679         dev_info(&s->client->dev,
 680                         "Silicon Labs Si2168 successfully attached\n");
 681         return 0;
 682 err:
 683         kfree(s);
 684         dev_dbg(&client->dev, "failed=%d\n", ret);
 685         return ret;
 686 }
 687
 688 static int si2168_remove(struct i2c_client *client)
 689 {
 690         struct si2168 *s = i2c_get_clientdata(client);
 691
 692         dev_dbg(&client->dev, "\n");
 693
 694         i2c_del_mux_adapter(s->adapter);
 695
 696         s->fe.ops.release = NULL;
 697         s->fe.demodulator_priv = NULL;
 698
 699         kfree(s);
 700
 701         return 0;
 702 }
 703
 704 static const struct i2c_device_id si2168_id[] = {
 705         {"si2168", 0},
 706         {}
 707 };
 708 MODULE_DEVICE_TABLE(i2c, si2168_id);
 709
 710 static struct i2c_driver si2168_driver = {
 711         .driver = {
 712                 .owner  = THIS_MODULE,
 713                 .name   = "si2168",
 714         },
 715         .probe          = si2168_probe,
 716         .remove         = si2168_remove,
 717         .id_table       = si2168_id,
 718 };
 719
 720 module_i2c_driver(si2168_driver);
 721
 722 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 723 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 724 MODULE_LICENSE("GPL");
 725 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 726 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 727 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);