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 /* Own I2C adapter locking is needed because of I2C gate logic. */
  22 static int si2168_i2c_master_send_unlocked(const struct i2c_client *client,
  23                                            const char *buf, int count)
  24 {
  25         int ret;
  26         struct i2c_msg msg = {
  27                 .addr = client->addr,
  28                 .flags = 0,
  29                 .len = count,
  30                 .buf = (char *)buf,
  31         };
  32
  33         ret = __i2c_transfer(client->adapter, &msg, 1);
  34         return (ret == 1) ? count : ret;
  35 }
  36
  37 static int si2168_i2c_master_recv_unlocked(const struct i2c_client *client,
  38                                            char *buf, int count)
  39 {
  40         int ret;
  41         struct i2c_msg msg = {
  42                 .addr = client->addr,
  43                 .flags = I2C_M_RD,
  44                 .len = count,
  45                 .buf = buf,
  46         };
  47
  48         ret = __i2c_transfer(client->adapter, &msg, 1);
  49         return (ret == 1) ? count : ret;
  50 }
  51
  52 /* execute firmware command */
  53 static int si2168_cmd_execute_unlocked(struct i2c_client *client,
  54                                        struct si2168_cmd *cmd)
  55 {
  56         int ret;
  57         unsigned long timeout;
  58
  59         if (cmd->wlen) {
  60                 /* write cmd and args for firmware */
  61                 ret = si2168_i2c_master_send_unlocked(client, cmd->args,
  62                                                       cmd->wlen);
  63                 if (ret < 0) {
  64                         goto err;
  65                 } else if (ret != cmd->wlen) {
  66                         ret = -EREMOTEIO;
  67                         goto err;
  68                 }
  69         }
  70
  71         if (cmd->rlen) {
  72                 /* wait cmd execution terminate */
  73                 #define TIMEOUT 70
  74                 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
  75                 while (!time_after(jiffies, timeout)) {
  76                         ret = si2168_i2c_master_recv_unlocked(client, cmd->args,
  77                                                               cmd->rlen);
  78                         if (ret < 0) {
  79                                 goto err;
  80                         } else if (ret != cmd->rlen) {
  81                                 ret = -EREMOTEIO;
  82                                 goto err;
  83                         }
  84
  85                         /* firmware ready? */
  86                         if ((cmd->args[0] >> 7) & 0x01)
  87                                 break;
  88                 }
  89
  90                 dev_dbg(&client->dev, "cmd execution took %d ms\n",
  91                                 jiffies_to_msecs(jiffies) -
  92                                 (jiffies_to_msecs(timeout) - TIMEOUT));
  93
  94                 /* error bit set? */
  95                 if ((cmd->args[0] >> 6) & 0x01) {
  96                         ret = -EREMOTEIO;
  97                         goto err;
  98                 }
  99
 100                 if (!((cmd->args[0] >> 7) & 0x01)) {
 101                         ret = -ETIMEDOUT;
 102                         goto err;
 103                 }
 104         }
 105
 106         return 0;
 107 err:
 108         dev_dbg(&client->dev, "failed=%d\n", ret);
 109         return ret;
 110 }
 111
 112 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
 113 {
 114         int ret;
 115
 116         i2c_lock_adapter(client->adapter);
 117         ret = si2168_cmd_execute_unlocked(client, cmd);
 118         i2c_unlock_adapter(client->adapter);
 119
 120         return ret;
 121 }
 122
 123 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
 124 {
 125         struct i2c_client *client = fe->demodulator_priv;
 126         struct si2168_dev *dev = i2c_get_clientdata(client);
 127         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 128         int ret;
 129         struct si2168_cmd cmd;
 130
 131         *status = 0;
 132
 133         if (!dev->active) {
 134                 ret = -EAGAIN;
 135                 goto err;
 136         }
 137
 138         switch (c->delivery_system) {
 139         case SYS_DVBT:
 140                 memcpy(cmd.args, "\xa0\x01", 2);
 141                 cmd.wlen = 2;
 142                 cmd.rlen = 13;
 143                 break;
 144         case SYS_DVBC_ANNEX_A:
 145                 memcpy(cmd.args, "\x90\x01", 2);
 146                 cmd.wlen = 2;
 147                 cmd.rlen = 9;
 148                 break;
 149         case SYS_DVBT2:
 150                 memcpy(cmd.args, "\x50\x01", 2);
 151                 cmd.wlen = 2;
 152                 cmd.rlen = 14;
 153                 break;
 154         default:
 155                 ret = -EINVAL;
 156                 goto err;
 157         }
 158
 159         ret = si2168_cmd_execute(client, &cmd);
 160         if (ret)
 161                 goto err;
 162
 163         switch ((cmd.args[2] >> 1) & 0x03) {
 164         case 0x01:
 165                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 166                 break;
 167         case 0x03:
 168                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 169                                 FE_HAS_SYNC | FE_HAS_LOCK;
 170                 break;
 171         }
 172
 173         dev->fe_status = *status;
 174
 175         if (*status & FE_HAS_LOCK) {
 176                 c->cnr.len = 1;
 177                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 178                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 179         } else {
 180                 c->cnr.len = 1;
 181                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 182         }
 183
 184         dev_dbg(&client->dev, "status=%02x args=%*ph\n",
 185                         *status, cmd.rlen, cmd.args);
 186
 187         return 0;
 188 err:
 189         dev_dbg(&client->dev, "failed=%d\n", ret);
 190         return ret;
 191 }
 192
 193 static int si2168_set_frontend(struct dvb_frontend *fe)
 194 {
 195         struct i2c_client *client = fe->demodulator_priv;
 196         struct si2168_dev *dev = i2c_get_clientdata(client);
 197         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 198         int ret;
 199         struct si2168_cmd cmd;
 200         u8 bandwidth, delivery_system;
 201
 202         dev_dbg(&client->dev,
 203                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
 204                         c->delivery_system, c->modulation, c->frequency,
 205                         c->bandwidth_hz, c->symbol_rate, c->inversion,
 206                         c->stream_id);
 207
 208         if (!dev->active) {
 209                 ret = -EAGAIN;
 210                 goto err;
 211         }
 212
 213         switch (c->delivery_system) {
 214         case SYS_DVBT:
 215                 delivery_system = 0x20;
 216                 break;
 217         case SYS_DVBC_ANNEX_A:
 218                 delivery_system = 0x30;
 219                 break;
 220         case SYS_DVBT2:
 221                 delivery_system = 0x70;
 222                 break;
 223         default:
 224                 ret = -EINVAL;
 225                 goto err;
 226         }
 227
 228         if (c->bandwidth_hz == 0) {
 229                 ret = -EINVAL;
 230                 goto err;
 231         } else if (c->bandwidth_hz <= 2000000)
 232                 bandwidth = 0x02;
 233         else if (c->bandwidth_hz <= 5000000)
 234                 bandwidth = 0x05;
 235         else if (c->bandwidth_hz <= 6000000)
 236                 bandwidth = 0x06;
 237         else if (c->bandwidth_hz <= 7000000)
 238                 bandwidth = 0x07;
 239         else if (c->bandwidth_hz <= 8000000)
 240                 bandwidth = 0x08;
 241         else if (c->bandwidth_hz <= 9000000)
 242                 bandwidth = 0x09;
 243         else if (c->bandwidth_hz <= 10000000)
 244                 bandwidth = 0x0a;
 245         else
 246                 bandwidth = 0x0f;
 247
 248         /* program tuner */
 249         if (fe->ops.tuner_ops.set_params) {
 250                 ret = fe->ops.tuner_ops.set_params(fe);
 251                 if (ret)
 252                         goto err;
 253         }
 254
 255         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 256         cmd.wlen = 5;
 257         cmd.rlen = 5;
 258         ret = si2168_cmd_execute(client, &cmd);
 259         if (ret)
 260                 goto err;
 261
 262         /* that has no big effect */
 263         if (c->delivery_system == SYS_DVBT)
 264                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 265         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 266                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 267         else if (c->delivery_system == SYS_DVBT2)
 268                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 269         cmd.wlen = 6;
 270         cmd.rlen = 3;
 271         ret = si2168_cmd_execute(client, &cmd);
 272         if (ret)
 273                 goto err;
 274
 275         if (c->delivery_system == SYS_DVBT2) {
 276                 /* select PLP */
 277                 cmd.args[0] = 0x52;
 278                 cmd.args[1] = c->stream_id & 0xff;
 279                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 280                 cmd.wlen = 3;
 281                 cmd.rlen = 1;
 282                 ret = si2168_cmd_execute(client, &cmd);
 283                 if (ret)
 284                         goto err;
 285         }
 286
 287         memcpy(cmd.args, "\x51\x03", 2);
 288         cmd.wlen = 2;
 289         cmd.rlen = 12;
 290         ret = si2168_cmd_execute(client, &cmd);
 291         if (ret)
 292                 goto err;
 293
 294         memcpy(cmd.args, "\x12\x08\x04", 3);
 295         cmd.wlen = 3;
 296         cmd.rlen = 3;
 297         ret = si2168_cmd_execute(client, &cmd);
 298         if (ret)
 299                 goto err;
 300
 301         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 302         cmd.wlen = 6;
 303         cmd.rlen = 4;
 304         ret = si2168_cmd_execute(client, &cmd);
 305         if (ret)
 306                 goto err;
 307
 308         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 309         cmd.wlen = 6;
 310         cmd.rlen = 4;
 311         ret = si2168_cmd_execute(client, &cmd);
 312         if (ret)
 313                 goto err;
 314
 315         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 316         cmd.wlen = 6;
 317         cmd.rlen = 4;
 318         ret = si2168_cmd_execute(client, &cmd);
 319         if (ret)
 320                 goto err;
 321
 322         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 323         cmd.args[4] = delivery_system | bandwidth;
 324         cmd.wlen = 6;
 325         cmd.rlen = 4;
 326         ret = si2168_cmd_execute(client, &cmd);
 327         if (ret)
 328                 goto err;
 329
 330         /* set DVB-C symbol rate */
 331         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 332                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 333                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 334                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 335                 cmd.wlen = 6;
 336                 cmd.rlen = 4;
 337                 ret = si2168_cmd_execute(client, &cmd);
 338                 if (ret)
 339                         goto err;
 340         }
 341
 342         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 343         cmd.wlen = 6;
 344         cmd.rlen = 4;
 345         ret = si2168_cmd_execute(client, &cmd);
 346         if (ret)
 347                 goto err;
 348
 349         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 350         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 351         cmd.wlen = 6;
 352         cmd.rlen = 4;
 353         ret = si2168_cmd_execute(client, &cmd);
 354         if (ret)
 355                 goto err;
 356
 357         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 358         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 359         cmd.wlen = 6;
 360         cmd.rlen = 4;
 361         ret = si2168_cmd_execute(client, &cmd);
 362         if (ret)
 363                 goto err;
 364
 365         memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
 366         cmd.wlen = 6;
 367         cmd.rlen = 4;
 368         ret = si2168_cmd_execute(client, &cmd);
 369         if (ret)
 370                 goto err;
 371
 372         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 373         cmd.wlen = 6;
 374         cmd.rlen = 4;
 375         ret = si2168_cmd_execute(client, &cmd);
 376         if (ret)
 377                 goto err;
 378
 379         memcpy(cmd.args, "\x85", 1);
 380         cmd.wlen = 1;
 381         cmd.rlen = 1;
 382         ret = si2168_cmd_execute(client, &cmd);
 383         if (ret)
 384                 goto err;
 385
 386         dev->delivery_system = c->delivery_system;
 387
 388         return 0;
 389 err:
 390         dev_dbg(&client->dev, "failed=%d\n", ret);
 391         return ret;
 392 }
 393
 394 static int si2168_init(struct dvb_frontend *fe)
 395 {
 396         struct i2c_client *client = fe->demodulator_priv;
 397         struct si2168_dev *dev = i2c_get_clientdata(client);
 398         int ret, len, remaining;
 399         const struct firmware *fw;
 400         const char *fw_name;
 401         struct si2168_cmd cmd;
 402         unsigned int chip_id;
 403
 404         dev_dbg(&client->dev, "\n");
 405
 406         /* initialize */
 407         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 408         cmd.wlen = 13;
 409         cmd.rlen = 0;
 410         ret = si2168_cmd_execute(client, &cmd);
 411         if (ret)
 412                 goto err;
 413
 414         if (dev->fw_loaded) {
 415                 /* resume */
 416                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 417                 cmd.wlen = 8;
 418                 cmd.rlen = 1;
 419                 ret = si2168_cmd_execute(client, &cmd);
 420                 if (ret)
 421                         goto err;
 422
 423                 memcpy(cmd.args, "\x85", 1);
 424                 cmd.wlen = 1;
 425                 cmd.rlen = 1;
 426                 ret = si2168_cmd_execute(client, &cmd);
 427                 if (ret)
 428                         goto err;
 429
 430                 goto warm;
 431         }
 432
 433         /* power up */
 434         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 435         cmd.wlen = 8;
 436         cmd.rlen = 1;
 437         ret = si2168_cmd_execute(client, &cmd);
 438         if (ret)
 439                 goto err;
 440
 441         /* query chip revision */
 442         memcpy(cmd.args, "\x02", 1);
 443         cmd.wlen = 1;
 444         cmd.rlen = 13;
 445         ret = si2168_cmd_execute(client, &cmd);
 446         if (ret)
 447                 goto err;
 448
 449         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 450                         cmd.args[4] << 0;
 451
 452         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 453         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 454         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 455
 456         switch (chip_id) {
 457         case SI2168_A20:
 458                 fw_name = SI2168_A20_FIRMWARE;
 459                 break;
 460         case SI2168_A30:
 461                 fw_name = SI2168_A30_FIRMWARE;
 462                 break;
 463         case SI2168_B40:
 464                 fw_name = SI2168_B40_FIRMWARE;
 465                 break;
 466         default:
 467                 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 468                                 cmd.args[2], cmd.args[1],
 469                                 cmd.args[3], cmd.args[4]);
 470                 ret = -EINVAL;
 471                 goto err;
 472         }
 473
 474         dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
 475                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 476
 477         /* request the firmware, this will block and timeout */
 478         ret = request_firmware(&fw, fw_name, &client->dev);
 479         if (ret) {
 480                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 481                 if (chip_id == SI2168_B40) {
 482                         fw_name = SI2168_B40_FIRMWARE_FALLBACK;
 483                         ret = request_firmware(&fw, fw_name, &client->dev);
 484                 }
 485
 486                 if (ret == 0) {
 487                         dev_notice(&client->dev,
 488                                         "please install firmware file '%s'\n",
 489                                         SI2168_B40_FIRMWARE);
 490                 } else {
 491                         dev_err(&client->dev,
 492                                         "firmware file '%s' not found\n",
 493                                         fw_name);
 494                         goto err_release_firmware;
 495                 }
 496         }
 497
 498         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 499                         fw_name);
 500
 501         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 502                 /* firmware is in the new format */
 503                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 504                         len = fw->data[fw->size - remaining];
 505                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 506                         cmd.wlen = len;
 507                         cmd.rlen = 1;
 508                         ret = si2168_cmd_execute(client, &cmd);
 509                         if (ret)
 510                                 break;
 511                 }
 512         } else if (fw->size % 8 == 0) {
 513                 /* firmware is in the old format */
 514                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 515                         len = 8;
 516                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 517                         cmd.wlen = len;
 518                         cmd.rlen = 1;
 519                         ret = si2168_cmd_execute(client, &cmd);
 520                         if (ret)
 521                                 break;
 522                 }
 523         } else {
 524                 /* bad or unknown firmware format */
 525                 ret = -EINVAL;
 526         }
 527
 528         if (ret) {
 529                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 530                 goto err_release_firmware;
 531         }
 532
 533         release_firmware(fw);
 534
 535         memcpy(cmd.args, "\x01\x01", 2);
 536         cmd.wlen = 2;
 537         cmd.rlen = 1;
 538         ret = si2168_cmd_execute(client, &cmd);
 539         if (ret)
 540                 goto err;
 541
 542         /* query firmware version */
 543         memcpy(cmd.args, "\x11", 1);
 544         cmd.wlen = 1;
 545         cmd.rlen = 10;
 546         ret = si2168_cmd_execute(client, &cmd);
 547         if (ret)
 548                 goto err;
 549
 550         dev_info(&client->dev, "firmware version: %c.%c.%d\n",
 551                         cmd.args[6], cmd.args[7], cmd.args[8]);
 552
 553         /* set ts mode */
 554         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 555         cmd.args[4] |= dev->ts_mode;
 556         if (dev->ts_clock_gapped)
 557                 cmd.args[4] |= 0x40;
 558         cmd.wlen = 6;
 559         cmd.rlen = 4;
 560         ret = si2168_cmd_execute(client, &cmd);
 561         if (ret)
 562                 goto err;
 563
 564         dev->fw_loaded = true;
 565 warm:
 566         dev->active = true;
 567
 568         return 0;
 569
 570 err_release_firmware:
 571         release_firmware(fw);
 572 err:
 573         dev_dbg(&client->dev, "failed=%d\n", ret);
 574         return ret;
 575 }
 576
 577 static int si2168_sleep(struct dvb_frontend *fe)
 578 {
 579         struct i2c_client *client = fe->demodulator_priv;
 580         struct si2168_dev *dev = i2c_get_clientdata(client);
 581         int ret;
 582         struct si2168_cmd cmd;
 583
 584         dev_dbg(&client->dev, "\n");
 585
 586         dev->active = false;
 587
 588         memcpy(cmd.args, "\x13", 1);
 589         cmd.wlen = 1;
 590         cmd.rlen = 0;
 591         ret = si2168_cmd_execute(client, &cmd);
 592         if (ret)
 593                 goto err;
 594
 595         return 0;
 596 err:
 597         dev_dbg(&client->dev, "failed=%d\n", ret);
 598         return ret;
 599 }
 600
 601 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 602         struct dvb_frontend_tune_settings *s)
 603 {
 604         s->min_delay_ms = 900;
 605
 606         return 0;
 607 }
 608
 609 /*
 610  * I2C gate logic
 611  * We must use unlocked I2C I/O because I2C adapter lock is already taken
 612  * by the caller (usually tuner driver).
 613  */
 614 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 615 {
 616         struct i2c_client *client = mux_priv;
 617         int ret;
 618         struct si2168_cmd cmd;
 619
 620         /* open I2C gate */
 621         memcpy(cmd.args, "\xc0\x0d\x01", 3);
 622         cmd.wlen = 3;
 623         cmd.rlen = 0;
 624         ret = si2168_cmd_execute_unlocked(client, &cmd);
 625         if (ret)
 626                 goto err;
 627
 628         return 0;
 629 err:
 630         dev_dbg(&client->dev, "failed=%d\n", ret);
 631         return ret;
 632 }
 633
 634 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 635 {
 636         struct i2c_client *client = mux_priv;
 637         int ret;
 638         struct si2168_cmd cmd;
 639
 640         /* close I2C gate */
 641         memcpy(cmd.args, "\xc0\x0d\x00", 3);
 642         cmd.wlen = 3;
 643         cmd.rlen = 0;
 644         ret = si2168_cmd_execute_unlocked(client, &cmd);
 645         if (ret)
 646                 goto err;
 647
 648         return 0;
 649 err:
 650         dev_dbg(&client->dev, "failed=%d\n", ret);
 651         return ret;
 652 }
 653
 654 static const struct dvb_frontend_ops si2168_ops = {
 655         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 656         .info = {
 657                 .name = "Silicon Labs Si2168",
 658                 .symbol_rate_min = 1000000,
 659                 .symbol_rate_max = 7200000,
 660                 .caps = FE_CAN_FEC_1_2 |
 661                         FE_CAN_FEC_2_3 |
 662                         FE_CAN_FEC_3_4 |
 663                         FE_CAN_FEC_5_6 |
 664                         FE_CAN_FEC_7_8 |
 665                         FE_CAN_FEC_AUTO |
 666                         FE_CAN_QPSK |
 667                         FE_CAN_QAM_16 |
 668                         FE_CAN_QAM_32 |
 669                         FE_CAN_QAM_64 |
 670                         FE_CAN_QAM_128 |
 671                         FE_CAN_QAM_256 |
 672                         FE_CAN_QAM_AUTO |
 673                         FE_CAN_TRANSMISSION_MODE_AUTO |
 674                         FE_CAN_GUARD_INTERVAL_AUTO |
 675                         FE_CAN_HIERARCHY_AUTO |
 676                         FE_CAN_MUTE_TS |
 677                         FE_CAN_2G_MODULATION |
 678                         FE_CAN_MULTISTREAM
 679         },
 680
 681         .get_tune_settings = si2168_get_tune_settings,
 682
 683         .init = si2168_init,
 684         .sleep = si2168_sleep,
 685
 686         .set_frontend = si2168_set_frontend,
 687
 688         .read_status = si2168_read_status,
 689 };
 690
 691 static int si2168_probe(struct i2c_client *client,
 692                 const struct i2c_device_id *id)
 693 {
 694         struct si2168_config *config = client->dev.platform_data;
 695         struct si2168_dev *dev;
 696         int ret;
 697
 698         dev_dbg(&client->dev, "\n");
 699
 700         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 701         if (!dev) {
 702                 ret = -ENOMEM;
 703                 dev_err(&client->dev, "kzalloc() failed\n");
 704                 goto err;
 705         }
 706
 707         /* create mux i2c adapter for tuner */
 708         dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
 709                         client, 0, 0, 0, si2168_select, si2168_deselect);
 710         if (dev->adapter == NULL) {
 711                 ret = -ENODEV;
 712                 goto err_kfree;
 713         }
 714
 715         /* create dvb_frontend */
 716         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 717         dev->fe.demodulator_priv = client;
 718         *config->i2c_adapter = dev->adapter;
 719         *config->fe = &dev->fe;
 720         dev->ts_mode = config->ts_mode;
 721         dev->ts_clock_inv = config->ts_clock_inv;
 722         dev->ts_clock_gapped = config->ts_clock_gapped;
 723         dev->fw_loaded = false;
 724
 725         i2c_set_clientdata(client, dev);
 726
 727         dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
 728         return 0;
 729 err_kfree:
 730         kfree(dev);
 731 err:
 732         dev_dbg(&client->dev, "failed=%d\n", ret);
 733         return ret;
 734 }
 735
 736 static int si2168_remove(struct i2c_client *client)
 737 {
 738         struct si2168_dev *dev = i2c_get_clientdata(client);
 739
 740         dev_dbg(&client->dev, "\n");
 741
 742         i2c_del_mux_adapter(dev->adapter);
 743
 744         dev->fe.ops.release = NULL;
 745         dev->fe.demodulator_priv = NULL;
 746
 747         kfree(dev);
 748
 749         return 0;
 750 }
 751
 752 static const struct i2c_device_id si2168_id_table[] = {
 753         {"si2168", 0},
 754         {}
 755 };
 756 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 757
 758 static struct i2c_driver si2168_driver = {
 759         .driver = {
 760                 .owner  = THIS_MODULE,
 761                 .name   = "si2168",
 762         },
 763         .probe          = si2168_probe,
 764         .remove         = si2168_remove,
 765         .id_table       = si2168_id_table,
 766 };
 767
 768 module_i2c_driver(si2168_driver);
 769
 770 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 771 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 772 MODULE_LICENSE("GPL");
 773 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 774 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 775 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);