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 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 70
  44                 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                 if (!((cmd->args[0] >> 7) & 0x01)) {
  64                         ret = -ETIMEDOUT;
  65                         goto err_mutex_unlock;
  66                 }
  67         }
  68
  69         mutex_unlock(&dev->i2c_mutex);
  70         return 0;
  71
  72 err_mutex_unlock:
  73         mutex_unlock(&dev->i2c_mutex);
  74         dev_dbg(&client->dev, "failed=%d\n", ret);
  75         return ret;
  76 }
  77
  78 static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status)
  79 {
  80         struct i2c_client *client = fe->demodulator_priv;
  81         struct si2168_dev *dev = i2c_get_clientdata(client);
  82         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  83         int ret;
  84         struct si2168_cmd cmd;
  85
  86         *status = 0;
  87
  88         if (!dev->active) {
  89                 ret = -EAGAIN;
  90                 goto err;
  91         }
  92
  93         switch (c->delivery_system) {
  94         case SYS_DVBT:
  95                 memcpy(cmd.args, "\xa0\x01", 2);
  96                 cmd.wlen = 2;
  97                 cmd.rlen = 13;
  98                 break;
  99         case SYS_DVBC_ANNEX_A:
 100                 memcpy(cmd.args, "\x90\x01", 2);
 101                 cmd.wlen = 2;
 102                 cmd.rlen = 9;
 103                 break;
 104         case SYS_DVBT2:
 105                 memcpy(cmd.args, "\x50\x01", 2);
 106                 cmd.wlen = 2;
 107                 cmd.rlen = 14;
 108                 break;
 109         default:
 110                 ret = -EINVAL;
 111                 goto err;
 112         }
 113
 114         ret = si2168_cmd_execute(client, &cmd);
 115         if (ret)
 116                 goto err;
 117
 118         switch ((cmd.args[2] >> 1) & 0x03) {
 119         case 0x01:
 120                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 121                 break;
 122         case 0x03:
 123                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 124                                 FE_HAS_SYNC | FE_HAS_LOCK;
 125                 break;
 126         }
 127
 128         dev->fe_status = *status;
 129
 130         if (*status & FE_HAS_LOCK) {
 131                 c->cnr.len = 1;
 132                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 133                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 134         } else {
 135                 c->cnr.len = 1;
 136                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 137         }
 138
 139         dev_dbg(&client->dev, "status=%02x args=%*ph\n",
 140                         *status, cmd.rlen, cmd.args);
 141
 142         return 0;
 143 err:
 144         dev_dbg(&client->dev, "failed=%d\n", ret);
 145         return ret;
 146 }
 147
 148 static int si2168_set_frontend(struct dvb_frontend *fe)
 149 {
 150         struct i2c_client *client = fe->demodulator_priv;
 151         struct si2168_dev *dev = i2c_get_clientdata(client);
 152         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 153         int ret;
 154         struct si2168_cmd cmd;
 155         u8 bandwidth, delivery_system;
 156
 157         dev_dbg(&client->dev,
 158                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
 159                         c->delivery_system, c->modulation, c->frequency,
 160                         c->bandwidth_hz, c->symbol_rate, c->inversion,
 161                         c->stream_id);
 162
 163         if (!dev->active) {
 164                 ret = -EAGAIN;
 165                 goto err;
 166         }
 167
 168         switch (c->delivery_system) {
 169         case SYS_DVBT:
 170                 delivery_system = 0x20;
 171                 break;
 172         case SYS_DVBC_ANNEX_A:
 173                 delivery_system = 0x30;
 174                 break;
 175         case SYS_DVBT2:
 176                 delivery_system = 0x70;
 177                 break;
 178         default:
 179                 ret = -EINVAL;
 180                 goto err;
 181         }
 182
 183         if (c->bandwidth_hz <= 5000000)
 184                 bandwidth = 0x05;
 185         else if (c->bandwidth_hz <= 6000000)
 186                 bandwidth = 0x06;
 187         else if (c->bandwidth_hz <= 7000000)
 188                 bandwidth = 0x07;
 189         else if (c->bandwidth_hz <= 8000000)
 190                 bandwidth = 0x08;
 191         else if (c->bandwidth_hz <= 9000000)
 192                 bandwidth = 0x09;
 193         else if (c->bandwidth_hz <= 10000000)
 194                 bandwidth = 0x0a;
 195         else
 196                 bandwidth = 0x0f;
 197
 198         /* program tuner */
 199         if (fe->ops.tuner_ops.set_params) {
 200                 ret = fe->ops.tuner_ops.set_params(fe);
 201                 if (ret)
 202                         goto err;
 203         }
 204
 205         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 206         cmd.wlen = 5;
 207         cmd.rlen = 5;
 208         ret = si2168_cmd_execute(client, &cmd);
 209         if (ret)
 210                 goto err;
 211
 212         /* that has no big effect */
 213         if (c->delivery_system == SYS_DVBT)
 214                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 215         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 216                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 217         else if (c->delivery_system == SYS_DVBT2)
 218                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 219         cmd.wlen = 6;
 220         cmd.rlen = 3;
 221         ret = si2168_cmd_execute(client, &cmd);
 222         if (ret)
 223                 goto err;
 224
 225         if (c->delivery_system == SYS_DVBT2) {
 226                 /* select PLP */
 227                 cmd.args[0] = 0x52;
 228                 cmd.args[1] = c->stream_id & 0xff;
 229                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 230                 cmd.wlen = 3;
 231                 cmd.rlen = 1;
 232                 ret = si2168_cmd_execute(client, &cmd);
 233                 if (ret)
 234                         goto err;
 235         }
 236
 237         memcpy(cmd.args, "\x51\x03", 2);
 238         cmd.wlen = 2;
 239         cmd.rlen = 12;
 240         ret = si2168_cmd_execute(client, &cmd);
 241         if (ret)
 242                 goto err;
 243
 244         memcpy(cmd.args, "\x12\x08\x04", 3);
 245         cmd.wlen = 3;
 246         cmd.rlen = 3;
 247         ret = si2168_cmd_execute(client, &cmd);
 248         if (ret)
 249                 goto err;
 250
 251         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 252         cmd.wlen = 6;
 253         cmd.rlen = 4;
 254         ret = si2168_cmd_execute(client, &cmd);
 255         if (ret)
 256                 goto err;
 257
 258         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 259         cmd.wlen = 6;
 260         cmd.rlen = 4;
 261         ret = si2168_cmd_execute(client, &cmd);
 262         if (ret)
 263                 goto err;
 264
 265         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 266         cmd.wlen = 6;
 267         cmd.rlen = 4;
 268         ret = si2168_cmd_execute(client, &cmd);
 269         if (ret)
 270                 goto err;
 271
 272         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 273         cmd.args[4] = delivery_system | bandwidth;
 274         cmd.wlen = 6;
 275         cmd.rlen = 4;
 276         ret = si2168_cmd_execute(client, &cmd);
 277         if (ret)
 278                 goto err;
 279
 280         /* set DVB-C symbol rate */
 281         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 282                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 283                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 284                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 285                 cmd.wlen = 6;
 286                 cmd.rlen = 4;
 287                 ret = si2168_cmd_execute(client, &cmd);
 288                 if (ret)
 289                         goto err;
 290         }
 291
 292         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 293         cmd.wlen = 6;
 294         cmd.rlen = 4;
 295         ret = si2168_cmd_execute(client, &cmd);
 296         if (ret)
 297                 goto err;
 298
 299         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 300         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 301         cmd.wlen = 6;
 302         cmd.rlen = 4;
 303         ret = si2168_cmd_execute(client, &cmd);
 304         if (ret)
 305                 goto err;
 306
 307         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 308         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 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\x01\x12\x00\x00", 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\x01\x03\x0c\x00", 6);
 323         cmd.wlen = 6;
 324         cmd.rlen = 4;
 325         ret = si2168_cmd_execute(client, &cmd);
 326         if (ret)
 327                 goto err;
 328
 329         memcpy(cmd.args, "\x85", 1);
 330         cmd.wlen = 1;
 331         cmd.rlen = 1;
 332         ret = si2168_cmd_execute(client, &cmd);
 333         if (ret)
 334                 goto err;
 335
 336         dev->delivery_system = c->delivery_system;
 337
 338         return 0;
 339 err:
 340         dev_dbg(&client->dev, "failed=%d\n", ret);
 341         return ret;
 342 }
 343
 344 static int si2168_init(struct dvb_frontend *fe)
 345 {
 346         struct i2c_client *client = fe->demodulator_priv;
 347         struct si2168_dev *dev = i2c_get_clientdata(client);
 348         int ret, len, remaining;
 349         const struct firmware *fw;
 350         u8 *fw_file;
 351         struct si2168_cmd cmd;
 352         unsigned int chip_id;
 353
 354         dev_dbg(&client->dev, "\n");
 355
 356         /* initialize */
 357         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 358         cmd.wlen = 13;
 359         cmd.rlen = 0;
 360         ret = si2168_cmd_execute(client, &cmd);
 361         if (ret)
 362                 goto err;
 363
 364         if (dev->fw_loaded) {
 365                 /* resume */
 366                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 367                 cmd.wlen = 8;
 368                 cmd.rlen = 1;
 369                 ret = si2168_cmd_execute(client, &cmd);
 370                 if (ret)
 371                         goto err;
 372
 373                 memcpy(cmd.args, "\x85", 1);
 374                 cmd.wlen = 1;
 375                 cmd.rlen = 1;
 376                 ret = si2168_cmd_execute(client, &cmd);
 377                 if (ret)
 378                         goto err;
 379
 380                 goto warm;
 381         }
 382
 383         /* power up */
 384         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 385         cmd.wlen = 8;
 386         cmd.rlen = 1;
 387         ret = si2168_cmd_execute(client, &cmd);
 388         if (ret)
 389                 goto err;
 390
 391         /* query chip revision */
 392         memcpy(cmd.args, "\x02", 1);
 393         cmd.wlen = 1;
 394         cmd.rlen = 13;
 395         ret = si2168_cmd_execute(client, &cmd);
 396         if (ret)
 397                 goto err;
 398
 399         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 400                         cmd.args[4] << 0;
 401
 402         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 403         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 404         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 405
 406         switch (chip_id) {
 407         case SI2168_A20:
 408                 fw_file = SI2168_A20_FIRMWARE;
 409                 break;
 410         case SI2168_A30:
 411                 fw_file = SI2168_A30_FIRMWARE;
 412                 break;
 413         case SI2168_B40:
 414                 fw_file = SI2168_B40_FIRMWARE;
 415                 break;
 416         default:
 417                 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 418                                 cmd.args[2], cmd.args[1],
 419                                 cmd.args[3], cmd.args[4]);
 420                 ret = -EINVAL;
 421                 goto err;
 422         }
 423
 424         dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
 425                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 426
 427         /* request the firmware, this will block and timeout */
 428         ret = request_firmware(&fw, fw_file, &client->dev);
 429         if (ret) {
 430                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 431                 if (chip_id == SI2168_B40) {
 432                         fw_file = SI2168_B40_FIRMWARE_FALLBACK;
 433                         ret = request_firmware(&fw, fw_file, &client->dev);
 434                 }
 435
 436                 if (ret == 0) {
 437                         dev_notice(&client->dev,
 438                                         "please install firmware file '%s'\n",
 439                                         SI2168_B40_FIRMWARE);
 440                 } else {
 441                         dev_err(&client->dev,
 442                                         "firmware file '%s' not found\n",
 443                                         fw_file);
 444                         goto err_release_firmware;
 445                 }
 446         }
 447
 448         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 449                         fw_file);
 450
 451         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 452                 /* firmware is in the new format */
 453                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 454                         len = fw->data[fw->size - remaining];
 455                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 456                         cmd.wlen = len;
 457                         cmd.rlen = 1;
 458                         ret = si2168_cmd_execute(client, &cmd);
 459                         if (ret)
 460                                 break;
 461                 }
 462         } else if (fw->size % 8 == 0) {
 463                 /* firmware is in the old format */
 464                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 465                         len = 8;
 466                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 467                         cmd.wlen = len;
 468                         cmd.rlen = 1;
 469                         ret = si2168_cmd_execute(client, &cmd);
 470                         if (ret)
 471                                 break;
 472                 }
 473         } else {
 474                 /* bad or unknown firmware format */
 475                 ret = -EINVAL;
 476         }
 477
 478         if (ret) {
 479                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 480                 goto err_release_firmware;
 481         }
 482
 483         release_firmware(fw);
 484
 485         memcpy(cmd.args, "\x01\x01", 2);
 486         cmd.wlen = 2;
 487         cmd.rlen = 1;
 488         ret = si2168_cmd_execute(client, &cmd);
 489         if (ret)
 490                 goto err;
 491
 492         /* query firmware version */
 493         memcpy(cmd.args, "\x11", 1);
 494         cmd.wlen = 1;
 495         cmd.rlen = 10;
 496         ret = si2168_cmd_execute(client, &cmd);
 497         if (ret)
 498                 goto err;
 499
 500         dev_info(&client->dev, "firmware version: %c.%c.%d\n",
 501                         cmd.args[6], cmd.args[7], cmd.args[8]);
 502
 503         /* set ts mode */
 504         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 505         cmd.args[4] |= dev->ts_mode;
 506         cmd.wlen = 6;
 507         cmd.rlen = 4;
 508         ret = si2168_cmd_execute(client, &cmd);
 509         if (ret)
 510                 goto err;
 511
 512         dev->fw_loaded = true;
 513 warm:
 514         dev->active = true;
 515
 516         return 0;
 517
 518 err_release_firmware:
 519         release_firmware(fw);
 520 err:
 521         dev_dbg(&client->dev, "failed=%d\n", ret);
 522         return ret;
 523 }
 524
 525 static int si2168_sleep(struct dvb_frontend *fe)
 526 {
 527         struct i2c_client *client = fe->demodulator_priv;
 528         struct si2168_dev *dev = i2c_get_clientdata(client);
 529         int ret;
 530         struct si2168_cmd cmd;
 531
 532         dev_dbg(&client->dev, "\n");
 533
 534         dev->active = false;
 535
 536         memcpy(cmd.args, "\x13", 1);
 537         cmd.wlen = 1;
 538         cmd.rlen = 0;
 539         ret = si2168_cmd_execute(client, &cmd);
 540         if (ret)
 541                 goto err;
 542
 543         return 0;
 544 err:
 545         dev_dbg(&client->dev, "failed=%d\n", ret);
 546         return ret;
 547 }
 548
 549 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 550         struct dvb_frontend_tune_settings *s)
 551 {
 552         s->min_delay_ms = 900;
 553
 554         return 0;
 555 }
 556
 557 /*
 558  * I2C gate logic
 559  * We must use unlocked i2c_transfer() here because I2C lock is already taken
 560  * by tuner driver.
 561  */
 562 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 563 {
 564         struct i2c_client *client = mux_priv;
 565         struct si2168_dev *dev = i2c_get_clientdata(client);
 566         int ret;
 567         struct i2c_msg gate_open_msg = {
 568                 .addr = client->addr,
 569                 .flags = 0,
 570                 .len = 3,
 571                 .buf = "\xc0\x0d\x01",
 572         };
 573
 574         mutex_lock(&dev->i2c_mutex);
 575
 576         /* open tuner I2C gate */
 577         ret = __i2c_transfer(client->adapter, &gate_open_msg, 1);
 578         if (ret != 1) {
 579                 dev_warn(&client->dev, "i2c write failed=%d\n", ret);
 580                 if (ret >= 0)
 581                         ret = -EREMOTEIO;
 582         } else {
 583                 ret = 0;
 584         }
 585
 586         return ret;
 587 }
 588
 589 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 590 {
 591         struct i2c_client *client = mux_priv;
 592         struct si2168_dev *dev = i2c_get_clientdata(client);
 593         int ret;
 594         struct i2c_msg gate_close_msg = {
 595                 .addr = client->addr,
 596                 .flags = 0,
 597                 .len = 3,
 598                 .buf = "\xc0\x0d\x00",
 599         };
 600
 601         /* close tuner I2C gate */
 602         ret = __i2c_transfer(client->adapter, &gate_close_msg, 1);
 603         if (ret != 1) {
 604                 dev_warn(&client->dev, "i2c write failed=%d\n", ret);
 605                 if (ret >= 0)
 606                         ret = -EREMOTEIO;
 607         } else {
 608                 ret = 0;
 609         }
 610
 611         mutex_unlock(&dev->i2c_mutex);
 612
 613         return ret;
 614 }
 615
 616 static const struct dvb_frontend_ops si2168_ops = {
 617         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 618         .info = {
 619                 .name = "Silicon Labs Si2168",
 620                 .symbol_rate_min = 1000000,
 621                 .symbol_rate_max = 7200000,
 622                 .caps = FE_CAN_FEC_1_2 |
 623                         FE_CAN_FEC_2_3 |
 624                         FE_CAN_FEC_3_4 |
 625                         FE_CAN_FEC_5_6 |
 626                         FE_CAN_FEC_7_8 |
 627                         FE_CAN_FEC_AUTO |
 628                         FE_CAN_QPSK |
 629                         FE_CAN_QAM_16 |
 630                         FE_CAN_QAM_32 |
 631                         FE_CAN_QAM_64 |
 632                         FE_CAN_QAM_128 |
 633                         FE_CAN_QAM_256 |
 634                         FE_CAN_QAM_AUTO |
 635                         FE_CAN_TRANSMISSION_MODE_AUTO |
 636                         FE_CAN_GUARD_INTERVAL_AUTO |
 637                         FE_CAN_HIERARCHY_AUTO |
 638                         FE_CAN_MUTE_TS |
 639                         FE_CAN_2G_MODULATION |
 640                         FE_CAN_MULTISTREAM
 641         },
 642
 643         .get_tune_settings = si2168_get_tune_settings,
 644
 645         .init = si2168_init,
 646         .sleep = si2168_sleep,
 647
 648         .set_frontend = si2168_set_frontend,
 649
 650         .read_status = si2168_read_status,
 651 };
 652
 653 static int si2168_probe(struct i2c_client *client,
 654                 const struct i2c_device_id *id)
 655 {
 656         struct si2168_config *config = client->dev.platform_data;
 657         struct si2168_dev *dev;
 658         int ret;
 659
 660         dev_dbg(&client->dev, "\n");
 661
 662         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 663         if (!dev) {
 664                 ret = -ENOMEM;
 665                 dev_err(&client->dev, "kzalloc() failed\n");
 666                 goto err;
 667         }
 668
 669         mutex_init(&dev->i2c_mutex);
 670
 671         /* create mux i2c adapter for tuner */
 672         dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
 673                         client, 0, 0, 0, si2168_select, si2168_deselect);
 674         if (dev->adapter == NULL) {
 675                 ret = -ENODEV;
 676                 goto err_kfree;
 677         }
 678
 679         /* create dvb_frontend */
 680         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 681         dev->fe.demodulator_priv = client;
 682         *config->i2c_adapter = dev->adapter;
 683         *config->fe = &dev->fe;
 684         dev->ts_mode = config->ts_mode;
 685         dev->ts_clock_inv = config->ts_clock_inv;
 686         dev->fw_loaded = false;
 687
 688         i2c_set_clientdata(client, dev);
 689
 690         dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
 691         return 0;
 692 err_kfree:
 693         kfree(dev);
 694 err:
 695         dev_dbg(&client->dev, "failed=%d\n", ret);
 696         return ret;
 697 }
 698
 699 static int si2168_remove(struct i2c_client *client)
 700 {
 701         struct si2168_dev *dev = i2c_get_clientdata(client);
 702
 703         dev_dbg(&client->dev, "\n");
 704
 705         i2c_del_mux_adapter(dev->adapter);
 706
 707         dev->fe.ops.release = NULL;
 708         dev->fe.demodulator_priv = NULL;
 709
 710         kfree(dev);
 711
 712         return 0;
 713 }
 714
 715 static const struct i2c_device_id si2168_id_table[] = {
 716         {"si2168", 0},
 717         {}
 718 };
 719 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 720
 721 static struct i2c_driver si2168_driver = {
 722         .driver = {
 723                 .owner  = THIS_MODULE,
 724                 .name   = "si2168",
 725         },
 726         .probe          = si2168_probe,
 727         .remove         = si2168_remove,
 728         .id_table       = si2168_id_table,
 729 };
 730
 731 module_i2c_driver(si2168_driver);
 732
 733 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 734 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 735 MODULE_LICENSE("GPL");
 736 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 737 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 738 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);