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\x18", 6);
 312         cmd.wlen = 6;
 313         cmd.rlen = 4;
 314         ret = si2168_cmd_execute(s, &cmd);
 315         if (ret)
 316                 goto err;
 317
 318         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6);
 319         cmd.wlen = 6;
 320         cmd.rlen = 4;
 321         ret = si2168_cmd_execute(s, &cmd);
 322         if (ret)
 323                 goto err;
 324
 325         memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
 326         cmd.wlen = 6;
 327         cmd.rlen = 4;
 328         ret = si2168_cmd_execute(s, &cmd);
 329         if (ret)
 330                 goto err;
 331
 332         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 333         cmd.wlen = 6;
 334         cmd.rlen = 4;
 335         ret = si2168_cmd_execute(s, &cmd);
 336         if (ret)
 337                 goto err;
 338
 339         memcpy(cmd.args, "\x85", 1);
 340         cmd.wlen = 1;
 341         cmd.rlen = 1;
 342         ret = si2168_cmd_execute(s, &cmd);
 343         if (ret)
 344                 goto err;
 345
 346         s->delivery_system = c->delivery_system;
 347
 348         return 0;
 349 err:
 350         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 351         return ret;
 352 }
 353
 354 static int si2168_init(struct dvb_frontend *fe)
 355 {
 356         struct si2168 *s = fe->demodulator_priv;
 357         int ret, len, remaining;
 358         const struct firmware *fw = NULL;
 359         u8 *fw_file;
 360         const unsigned int i2c_wr_max = 8;
 361         struct si2168_cmd cmd;
 362         unsigned int chip_id;
 363
 364         dev_dbg(&s->client->dev, "\n");
 365
 366         /* initialize */
 367         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 368         cmd.wlen = 13;
 369         cmd.rlen = 0;
 370         ret = si2168_cmd_execute(s, &cmd);
 371         if (ret)
 372                 goto err;
 373
 374         if (s->fw_loaded) {
 375                 /* resume */
 376                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 377                 cmd.wlen = 8;
 378                 cmd.rlen = 1;
 379                 ret = si2168_cmd_execute(s, &cmd);
 380                 if (ret)
 381                         goto err;
 382
 383                 memcpy(cmd.args, "\x85", 1);
 384                 cmd.wlen = 1;
 385                 cmd.rlen = 1;
 386                 ret = si2168_cmd_execute(s, &cmd);
 387                 if (ret)
 388                         goto err;
 389
 390                 goto warm;
 391         }
 392
 393         /* power up */
 394         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 395         cmd.wlen = 8;
 396         cmd.rlen = 1;
 397         ret = si2168_cmd_execute(s, &cmd);
 398         if (ret)
 399                 goto err;
 400
 401         /* query chip revision */
 402         memcpy(cmd.args, "\x02", 1);
 403         cmd.wlen = 1;
 404         cmd.rlen = 13;
 405         ret = si2168_cmd_execute(s, &cmd);
 406         if (ret)
 407                 goto err;
 408
 409         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 410                         cmd.args[4] << 0;
 411
 412         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 413         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 414         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 415
 416         switch (chip_id) {
 417         case SI2168_A20:
 418                 fw_file = SI2168_A20_FIRMWARE;
 419                 break;
 420         case SI2168_A30:
 421                 fw_file = SI2168_A30_FIRMWARE;
 422                 break;
 423         case SI2168_B40:
 424                 fw_file = SI2168_B40_FIRMWARE;
 425                 break;
 426         default:
 427                 dev_err(&s->client->dev,
 428                                 "unknown chip version Si21%d-%c%c%c\n",
 429                                 cmd.args[2], cmd.args[1],
 430                                 cmd.args[3], cmd.args[4]);
 431                 ret = -EINVAL;
 432                 goto err;
 433         }
 434
 435         /* cold state - try to download firmware */
 436         dev_info(&s->client->dev, "found a '%s' in cold state\n",
 437                         si2168_ops.info.name);
 438
 439         /* request the firmware, this will block and timeout */
 440         ret = request_firmware(&fw, fw_file, &s->client->dev);
 441         if (ret) {
 442                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 443                 if (chip_id == SI2168_B40) {
 444                         fw_file = SI2168_B40_FIRMWARE_FALLBACK;
 445                         ret = request_firmware(&fw, fw_file, &s->client->dev);
 446                 }
 447
 448                 if (ret == 0) {
 449                         dev_notice(&s->client->dev,
 450                                         "please install firmware file '%s'\n",
 451                                         SI2168_B40_FIRMWARE);
 452                 } else {
 453                         dev_err(&s->client->dev,
 454                                         "firmware file '%s' not found\n",
 455                                         fw_file);
 456                         goto err;
 457                 }
 458         }
 459
 460         dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
 461                         fw_file);
 462
 463         for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) {
 464                 len = remaining;
 465                 if (len > i2c_wr_max)
 466                         len = i2c_wr_max;
 467
 468                 memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 469                 cmd.wlen = len;
 470                 cmd.rlen = 1;
 471                 ret = si2168_cmd_execute(s, &cmd);
 472                 if (ret) {
 473                         dev_err(&s->client->dev,
 474                                         "firmware download failed=%d\n",
 475                                         ret);
 476                         goto err;
 477                 }
 478         }
 479
 480         release_firmware(fw);
 481         fw = NULL;
 482
 483         memcpy(cmd.args, "\x01\x01", 2);
 484         cmd.wlen = 2;
 485         cmd.rlen = 1;
 486         ret = si2168_cmd_execute(s, &cmd);
 487         if (ret)
 488                 goto err;
 489
 490         /* set ts mode */
 491         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 492         cmd.args[4] |= s->ts_mode;
 493         cmd.wlen = 6;
 494         cmd.rlen = 4;
 495         ret = si2168_cmd_execute(s, &cmd);
 496         if (ret)
 497                 goto err;
 498
 499         s->fw_loaded = true;
 500
 501 warm:
 502         dev_info(&s->client->dev, "found a '%s' in warm state\n",
 503                         si2168_ops.info.name);
 504
 505         s->active = true;
 506
 507         return 0;
 508 err:
 509         if (fw)
 510                 release_firmware(fw);
 511
 512         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 513         return ret;
 514 }
 515
 516 static int si2168_sleep(struct dvb_frontend *fe)
 517 {
 518         struct si2168 *s = fe->demodulator_priv;
 519         int ret;
 520         struct si2168_cmd cmd;
 521
 522         dev_dbg(&s->client->dev, "\n");
 523
 524         s->active = false;
 525
 526         memcpy(cmd.args, "\x13", 1);
 527         cmd.wlen = 1;
 528         cmd.rlen = 0;
 529         ret = si2168_cmd_execute(s, &cmd);
 530         if (ret)
 531                 goto err;
 532
 533         return 0;
 534 err:
 535         dev_dbg(&s->client->dev, "failed=%d\n", ret);
 536         return ret;
 537 }
 538
 539 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 540         struct dvb_frontend_tune_settings *s)
 541 {
 542         s->min_delay_ms = 900;
 543
 544         return 0;
 545 }
 546
 547 /*
 548  * I2C gate logic
 549  * We must use unlocked i2c_transfer() here because I2C lock is already taken
 550  * by tuner driver.
 551  */
 552 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 553 {
 554         struct si2168 *s = mux_priv;
 555         int ret;
 556         struct i2c_msg gate_open_msg = {
 557                 .addr = s->client->addr,
 558                 .flags = 0,
 559                 .len = 3,
 560                 .buf = "\xc0\x0d\x01",
 561         };
 562
 563         mutex_lock(&s->i2c_mutex);
 564
 565         /* open tuner I2C gate */
 566         ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1);
 567         if (ret != 1) {
 568                 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret);
 569                 if (ret >= 0)
 570                         ret = -EREMOTEIO;
 571         } else {
 572                 ret = 0;
 573         }
 574
 575         return ret;
 576 }
 577
 578 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 579 {
 580         struct si2168 *s = mux_priv;
 581         int ret;
 582         struct i2c_msg gate_close_msg = {
 583                 .addr = s->client->addr,
 584                 .flags = 0,
 585                 .len = 3,
 586                 .buf = "\xc0\x0d\x00",
 587         };
 588
 589         /* close tuner I2C gate */
 590         ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1);
 591         if (ret != 1) {
 592                 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret);
 593                 if (ret >= 0)
 594                         ret = -EREMOTEIO;
 595         } else {
 596                 ret = 0;
 597         }
 598
 599         mutex_unlock(&s->i2c_mutex);
 600
 601         return ret;
 602 }
 603
 604 static const struct dvb_frontend_ops si2168_ops = {
 605         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 606         .info = {
 607                 .name = "Silicon Labs Si2168",
 608                 .caps = FE_CAN_FEC_1_2 |
 609                         FE_CAN_FEC_2_3 |
 610                         FE_CAN_FEC_3_4 |
 611                         FE_CAN_FEC_5_6 |
 612                         FE_CAN_FEC_7_8 |
 613                         FE_CAN_FEC_AUTO |
 614                         FE_CAN_QPSK |
 615                         FE_CAN_QAM_16 |
 616                         FE_CAN_QAM_32 |
 617                         FE_CAN_QAM_64 |
 618                         FE_CAN_QAM_128 |
 619                         FE_CAN_QAM_256 |
 620                         FE_CAN_QAM_AUTO |
 621                         FE_CAN_TRANSMISSION_MODE_AUTO |
 622                         FE_CAN_GUARD_INTERVAL_AUTO |
 623                         FE_CAN_HIERARCHY_AUTO |
 624                         FE_CAN_MUTE_TS |
 625                         FE_CAN_2G_MODULATION |
 626                         FE_CAN_MULTISTREAM
 627         },
 628
 629         .get_tune_settings = si2168_get_tune_settings,
 630
 631         .init = si2168_init,
 632         .sleep = si2168_sleep,
 633
 634         .set_frontend = si2168_set_frontend,
 635
 636         .read_status = si2168_read_status,
 637 };
 638
 639 static int si2168_probe(struct i2c_client *client,
 640                 const struct i2c_device_id *id)
 641 {
 642         struct si2168_config *config = client->dev.platform_data;
 643         struct si2168 *s;
 644         int ret;
 645
 646         dev_dbg(&client->dev, "\n");
 647
 648         s = kzalloc(sizeof(struct si2168), GFP_KERNEL);
 649         if (!s) {
 650                 ret = -ENOMEM;
 651                 dev_err(&client->dev, "kzalloc() failed\n");
 652                 goto err;
 653         }
 654
 655         s->client = client;
 656         mutex_init(&s->i2c_mutex);
 657
 658         /* create mux i2c adapter for tuner */
 659         s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s,
 660                         0, 0, 0, si2168_select, si2168_deselect);
 661         if (s->adapter == NULL) {
 662                 ret = -ENODEV;
 663                 goto err;
 664         }
 665
 666         /* create dvb_frontend */
 667         memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 668         s->fe.demodulator_priv = s;
 669
 670         *config->i2c_adapter = s->adapter;
 671         *config->fe = &s->fe;
 672         s->ts_mode = config->ts_mode;
 673         s->fw_loaded = false;
 674
 675         i2c_set_clientdata(client, s);
 676
 677         dev_info(&s->client->dev,
 678                         "Silicon Labs Si2168 successfully attached\n");
 679         return 0;
 680 err:
 681         kfree(s);
 682         dev_dbg(&client->dev, "failed=%d\n", ret);
 683         return ret;
 684 }
 685
 686 static int si2168_remove(struct i2c_client *client)
 687 {
 688         struct si2168 *s = i2c_get_clientdata(client);
 689
 690         dev_dbg(&client->dev, "\n");
 691
 692         i2c_del_mux_adapter(s->adapter);
 693
 694         s->fe.ops.release = NULL;
 695         s->fe.demodulator_priv = NULL;
 696
 697         kfree(s);
 698
 699         return 0;
 700 }
 701
 702 static const struct i2c_device_id si2168_id[] = {
 703         {"si2168", 0},
 704         {}
 705 };
 706 MODULE_DEVICE_TABLE(i2c, si2168_id);
 707
 708 static struct i2c_driver si2168_driver = {
 709         .driver = {
 710                 .owner  = THIS_MODULE,
 711                 .name   = "si2168",
 712         },
 713         .probe          = si2168_probe,
 714         .remove         = si2168_remove,
 715         .id_table       = si2168_id,
 716 };
 717
 718 module_i2c_driver(si2168_driver);
 719
 720 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 721 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 722 MODULE_LICENSE("GPL");
 723 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 724 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 725 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);