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                 /* error bit set? */
  64                 if ((cmd->args[0] >> 6) & 0x01) {
  65                         ret = -EREMOTEIO;
  66                         goto err_mutex_unlock;
  67                 }
  68
  69                 if (!((cmd->args[0] >> 7) & 0x01)) {
  70                         ret = -ETIMEDOUT;
  71                         goto err_mutex_unlock;
  72                 }
  73         }
  74
  75         mutex_unlock(&dev->i2c_mutex);
  76         return 0;
  77 err_mutex_unlock:
  78         mutex_unlock(&dev->i2c_mutex);
  79         dev_dbg(&client->dev, "failed=%d\n", ret);
  80         return ret;
  81 }
  82
  83 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
  84 {
  85         struct i2c_client *client = fe->demodulator_priv;
  86         struct si2168_dev *dev = i2c_get_clientdata(client);
  87         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  88         int ret;
  89         struct si2168_cmd cmd;
  90
  91         *status = 0;
  92
  93         if (!dev->active) {
  94                 ret = -EAGAIN;
  95                 goto err;
  96         }
  97
  98         switch (c->delivery_system) {
  99         case SYS_DVBT:
 100                 memcpy(cmd.args, "\xa0\x01", 2);
 101                 cmd.wlen = 2;
 102                 cmd.rlen = 13;
 103                 break;
 104         case SYS_DVBC_ANNEX_A:
 105                 memcpy(cmd.args, "\x90\x01", 2);
 106                 cmd.wlen = 2;
 107                 cmd.rlen = 9;
 108                 break;
 109         case SYS_DVBT2:
 110                 memcpy(cmd.args, "\x50\x01", 2);
 111                 cmd.wlen = 2;
 112                 cmd.rlen = 14;
 113                 break;
 114         default:
 115                 ret = -EINVAL;
 116                 goto err;
 117         }
 118
 119         ret = si2168_cmd_execute(client, &cmd);
 120         if (ret)
 121                 goto err;
 122
 123         switch ((cmd.args[2] >> 1) & 0x03) {
 124         case 0x01:
 125                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 126                 break;
 127         case 0x03:
 128                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 129                                 FE_HAS_SYNC | FE_HAS_LOCK;
 130                 break;
 131         }
 132
 133         dev->fe_status = *status;
 134
 135         if (*status & FE_HAS_LOCK) {
 136                 c->cnr.len = 1;
 137                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 138                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 139         } else {
 140                 c->cnr.len = 1;
 141                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 142         }
 143
 144         dev_dbg(&client->dev, "status=%02x args=%*ph\n",
 145                         *status, cmd.rlen, cmd.args);
 146
 147         return 0;
 148 err:
 149         dev_dbg(&client->dev, "failed=%d\n", ret);
 150         return ret;
 151 }
 152
 153 static int si2168_set_frontend(struct dvb_frontend *fe)
 154 {
 155         struct i2c_client *client = fe->demodulator_priv;
 156         struct si2168_dev *dev = i2c_get_clientdata(client);
 157         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 158         int ret;
 159         struct si2168_cmd cmd;
 160         u8 bandwidth, delivery_system;
 161
 162         dev_dbg(&client->dev,
 163                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
 164                         c->delivery_system, c->modulation, c->frequency,
 165                         c->bandwidth_hz, c->symbol_rate, c->inversion,
 166                         c->stream_id);
 167
 168         if (!dev->active) {
 169                 ret = -EAGAIN;
 170                 goto err;
 171         }
 172
 173         switch (c->delivery_system) {
 174         case SYS_DVBT:
 175                 delivery_system = 0x20;
 176                 break;
 177         case SYS_DVBC_ANNEX_A:
 178                 delivery_system = 0x30;
 179                 break;
 180         case SYS_DVBT2:
 181                 delivery_system = 0x70;
 182                 break;
 183         default:
 184                 ret = -EINVAL;
 185                 goto err;
 186         }
 187
 188         if (c->bandwidth_hz == 0) {
 189                 ret = -EINVAL;
 190                 goto err;
 191         } else if (c->bandwidth_hz <= 2000000)
 192                 bandwidth = 0x02;
 193         else if (c->bandwidth_hz <= 5000000)
 194                 bandwidth = 0x05;
 195         else if (c->bandwidth_hz <= 6000000)
 196                 bandwidth = 0x06;
 197         else if (c->bandwidth_hz <= 7000000)
 198                 bandwidth = 0x07;
 199         else if (c->bandwidth_hz <= 8000000)
 200                 bandwidth = 0x08;
 201         else if (c->bandwidth_hz <= 9000000)
 202                 bandwidth = 0x09;
 203         else if (c->bandwidth_hz <= 10000000)
 204                 bandwidth = 0x0a;
 205         else
 206                 bandwidth = 0x0f;
 207
 208         /* program tuner */
 209         if (fe->ops.tuner_ops.set_params) {
 210                 ret = fe->ops.tuner_ops.set_params(fe);
 211                 if (ret)
 212                         goto err;
 213         }
 214
 215         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 216         cmd.wlen = 5;
 217         cmd.rlen = 5;
 218         ret = si2168_cmd_execute(client, &cmd);
 219         if (ret)
 220                 goto err;
 221
 222         /* that has no big effect */
 223         if (c->delivery_system == SYS_DVBT)
 224                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 225         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 226                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 227         else if (c->delivery_system == SYS_DVBT2)
 228                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 229         cmd.wlen = 6;
 230         cmd.rlen = 3;
 231         ret = si2168_cmd_execute(client, &cmd);
 232         if (ret)
 233                 goto err;
 234
 235         if (c->delivery_system == SYS_DVBT2) {
 236                 /* select PLP */
 237                 cmd.args[0] = 0x52;
 238                 cmd.args[1] = c->stream_id & 0xff;
 239                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 240                 cmd.wlen = 3;
 241                 cmd.rlen = 1;
 242                 ret = si2168_cmd_execute(client, &cmd);
 243                 if (ret)
 244                         goto err;
 245         }
 246
 247         memcpy(cmd.args, "\x51\x03", 2);
 248         cmd.wlen = 2;
 249         cmd.rlen = 12;
 250         ret = si2168_cmd_execute(client, &cmd);
 251         if (ret)
 252                 goto err;
 253
 254         memcpy(cmd.args, "\x12\x08\x04", 3);
 255         cmd.wlen = 3;
 256         cmd.rlen = 3;
 257         ret = si2168_cmd_execute(client, &cmd);
 258         if (ret)
 259                 goto err;
 260
 261         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 262         cmd.wlen = 6;
 263         cmd.rlen = 4;
 264         ret = si2168_cmd_execute(client, &cmd);
 265         if (ret)
 266                 goto err;
 267
 268         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 269         cmd.wlen = 6;
 270         cmd.rlen = 4;
 271         ret = si2168_cmd_execute(client, &cmd);
 272         if (ret)
 273                 goto err;
 274
 275         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 276         cmd.wlen = 6;
 277         cmd.rlen = 4;
 278         ret = si2168_cmd_execute(client, &cmd);
 279         if (ret)
 280                 goto err;
 281
 282         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 283         cmd.args[4] = delivery_system | bandwidth;
 284         cmd.wlen = 6;
 285         cmd.rlen = 4;
 286         ret = si2168_cmd_execute(client, &cmd);
 287         if (ret)
 288                 goto err;
 289
 290         /* set DVB-C symbol rate */
 291         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 292                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 293                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 294                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 295                 cmd.wlen = 6;
 296                 cmd.rlen = 4;
 297                 ret = si2168_cmd_execute(client, &cmd);
 298                 if (ret)
 299                         goto err;
 300         }
 301
 302         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 303         cmd.wlen = 6;
 304         cmd.rlen = 4;
 305         ret = si2168_cmd_execute(client, &cmd);
 306         if (ret)
 307                 goto err;
 308
 309         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 310         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 311         cmd.wlen = 6;
 312         cmd.rlen = 4;
 313         ret = si2168_cmd_execute(client, &cmd);
 314         if (ret)
 315                 goto err;
 316
 317         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 318         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 319         cmd.wlen = 6;
 320         cmd.rlen = 4;
 321         ret = si2168_cmd_execute(client, &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(client, &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(client, &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(client, &cmd);
 343         if (ret)
 344                 goto err;
 345
 346         dev->delivery_system = c->delivery_system;
 347
 348         return 0;
 349 err:
 350         dev_dbg(&client->dev, "failed=%d\n", ret);
 351         return ret;
 352 }
 353
 354 static int si2168_init(struct dvb_frontend *fe)
 355 {
 356         struct i2c_client *client = fe->demodulator_priv;
 357         struct si2168_dev *dev = i2c_get_clientdata(client);
 358         int ret, len, remaining;
 359         const struct firmware *fw;
 360         const char *fw_name;
 361         struct si2168_cmd cmd;
 362         unsigned int chip_id;
 363
 364         dev_dbg(&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(client, &cmd);
 371         if (ret)
 372                 goto err;
 373
 374         if (dev->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(client, &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(client, &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(client, &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(client, &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_name = SI2168_A20_FIRMWARE;
 419                 break;
 420         case SI2168_A30:
 421                 fw_name = SI2168_A30_FIRMWARE;
 422                 break;
 423         case SI2168_B40:
 424                 fw_name = SI2168_B40_FIRMWARE;
 425                 break;
 426         default:
 427                 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 428                                 cmd.args[2], cmd.args[1],
 429                                 cmd.args[3], cmd.args[4]);
 430                 ret = -EINVAL;
 431                 goto err;
 432         }
 433
 434         dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
 435                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 436
 437         /* request the firmware, this will block and timeout */
 438         ret = request_firmware(&fw, fw_name, &client->dev);
 439         if (ret) {
 440                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 441                 if (chip_id == SI2168_B40) {
 442                         fw_name = SI2168_B40_FIRMWARE_FALLBACK;
 443                         ret = request_firmware(&fw, fw_name, &client->dev);
 444                 }
 445
 446                 if (ret == 0) {
 447                         dev_notice(&client->dev,
 448                                         "please install firmware file '%s'\n",
 449                                         SI2168_B40_FIRMWARE);
 450                 } else {
 451                         dev_err(&client->dev,
 452                                         "firmware file '%s' not found\n",
 453                                         fw_name);
 454                         goto err_release_firmware;
 455                 }
 456         }
 457
 458         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 459                         fw_name);
 460
 461         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 462                 /* firmware is in the new format */
 463                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 464                         len = fw->data[fw->size - remaining];
 465                         if (len > SI2168_ARGLEN) {
 466                                 ret = -EINVAL;
 467                                 break;
 468                         }
 469                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 470                         cmd.wlen = len;
 471                         cmd.rlen = 1;
 472                         ret = si2168_cmd_execute(client, &cmd);
 473                         if (ret)
 474                                 break;
 475                 }
 476         } else if (fw->size % 8 == 0) {
 477                 /* firmware is in the old format */
 478                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 479                         len = 8;
 480                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 481                         cmd.wlen = len;
 482                         cmd.rlen = 1;
 483                         ret = si2168_cmd_execute(client, &cmd);
 484                         if (ret)
 485                                 break;
 486                 }
 487         } else {
 488                 /* bad or unknown firmware format */
 489                 ret = -EINVAL;
 490         }
 491
 492         if (ret) {
 493                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 494                 goto err_release_firmware;
 495         }
 496
 497         release_firmware(fw);
 498
 499         memcpy(cmd.args, "\x01\x01", 2);
 500         cmd.wlen = 2;
 501         cmd.rlen = 1;
 502         ret = si2168_cmd_execute(client, &cmd);
 503         if (ret)
 504                 goto err;
 505
 506         /* query firmware version */
 507         memcpy(cmd.args, "\x11", 1);
 508         cmd.wlen = 1;
 509         cmd.rlen = 10;
 510         ret = si2168_cmd_execute(client, &cmd);
 511         if (ret)
 512                 goto err;
 513
 514         dev_info(&client->dev, "firmware version: %c.%c.%d\n",
 515                         cmd.args[6], cmd.args[7], cmd.args[8]);
 516
 517         /* set ts mode */
 518         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 519         cmd.args[4] |= dev->ts_mode;
 520         if (dev->ts_clock_gapped)
 521                 cmd.args[4] |= 0x40;
 522         cmd.wlen = 6;
 523         cmd.rlen = 4;
 524         ret = si2168_cmd_execute(client, &cmd);
 525         if (ret)
 526                 goto err;
 527
 528         dev->fw_loaded = true;
 529 warm:
 530         dev->active = true;
 531
 532         return 0;
 533
 534 err_release_firmware:
 535         release_firmware(fw);
 536 err:
 537         dev_dbg(&client->dev, "failed=%d\n", ret);
 538         return ret;
 539 }
 540
 541 static int si2168_sleep(struct dvb_frontend *fe)
 542 {
 543         struct i2c_client *client = fe->demodulator_priv;
 544         struct si2168_dev *dev = i2c_get_clientdata(client);
 545         int ret;
 546         struct si2168_cmd cmd;
 547
 548         dev_dbg(&client->dev, "\n");
 549
 550         dev->active = false;
 551
 552         memcpy(cmd.args, "\x13", 1);
 553         cmd.wlen = 1;
 554         cmd.rlen = 0;
 555         ret = si2168_cmd_execute(client, &cmd);
 556         if (ret)
 557                 goto err;
 558
 559         return 0;
 560 err:
 561         dev_dbg(&client->dev, "failed=%d\n", ret);
 562         return ret;
 563 }
 564
 565 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 566         struct dvb_frontend_tune_settings *s)
 567 {
 568         s->min_delay_ms = 900;
 569
 570         return 0;
 571 }
 572
 573 static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
 574 {
 575         struct i2c_client *client = i2c_mux_priv(muxc);
 576         int ret;
 577         struct si2168_cmd cmd;
 578
 579         /* open I2C gate */
 580         memcpy(cmd.args, "\xc0\x0d\x01", 3);
 581         cmd.wlen = 3;
 582         cmd.rlen = 0;
 583         ret = si2168_cmd_execute(client, &cmd);
 584         if (ret)
 585                 goto err;
 586
 587         return 0;
 588 err:
 589         dev_dbg(&client->dev, "failed=%d\n", ret);
 590         return ret;
 591 }
 592
 593 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
 594 {
 595         struct i2c_client *client = i2c_mux_priv(muxc);
 596         int ret;
 597         struct si2168_cmd cmd;
 598
 599         /* close I2C gate */
 600         memcpy(cmd.args, "\xc0\x0d\x00", 3);
 601         cmd.wlen = 3;
 602         cmd.rlen = 0;
 603         ret = si2168_cmd_execute(client, &cmd);
 604         if (ret)
 605                 goto err;
 606
 607         return 0;
 608 err:
 609         dev_dbg(&client->dev, "failed=%d\n", ret);
 610         return ret;
 611 }
 612
 613 static const struct dvb_frontend_ops si2168_ops = {
 614         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 615         .info = {
 616                 .name = "Silicon Labs Si2168",
 617                 .symbol_rate_min = 1000000,
 618                 .symbol_rate_max = 7200000,
 619                 .caps = FE_CAN_FEC_1_2 |
 620                         FE_CAN_FEC_2_3 |
 621                         FE_CAN_FEC_3_4 |
 622                         FE_CAN_FEC_5_6 |
 623                         FE_CAN_FEC_7_8 |
 624                         FE_CAN_FEC_AUTO |
 625                         FE_CAN_QPSK |
 626                         FE_CAN_QAM_16 |
 627                         FE_CAN_QAM_32 |
 628                         FE_CAN_QAM_64 |
 629                         FE_CAN_QAM_128 |
 630                         FE_CAN_QAM_256 |
 631                         FE_CAN_QAM_AUTO |
 632                         FE_CAN_TRANSMISSION_MODE_AUTO |
 633                         FE_CAN_GUARD_INTERVAL_AUTO |
 634                         FE_CAN_HIERARCHY_AUTO |
 635                         FE_CAN_MUTE_TS |
 636                         FE_CAN_2G_MODULATION |
 637                         FE_CAN_MULTISTREAM
 638         },
 639
 640         .get_tune_settings = si2168_get_tune_settings,
 641
 642         .init = si2168_init,
 643         .sleep = si2168_sleep,
 644
 645         .set_frontend = si2168_set_frontend,
 646
 647         .read_status = si2168_read_status,
 648 };
 649
 650 static int si2168_probe(struct i2c_client *client,
 651                 const struct i2c_device_id *id)
 652 {
 653         struct si2168_config *config = client->dev.platform_data;
 654         struct si2168_dev *dev;
 655         int ret;
 656
 657         dev_dbg(&client->dev, "\n");
 658
 659         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 660         if (!dev) {
 661                 ret = -ENOMEM;
 662                 dev_err(&client->dev, "kzalloc() failed\n");
 663                 goto err;
 664         }
 665
 666         mutex_init(&dev->i2c_mutex);
 667
 668         /* create mux i2c adapter for tuner */
 669         dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
 670                                   1, 0, I2C_MUX_LOCKED,
 671                                   si2168_select, si2168_deselect);
 672         if (!dev->muxc) {
 673                 ret = -ENOMEM;
 674                 goto err_kfree;
 675         }
 676         dev->muxc->priv = client;
 677         ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
 678         if (ret)
 679                 goto err_kfree;
 680
 681         /* create dvb_frontend */
 682         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 683         dev->fe.demodulator_priv = client;
 684         *config->i2c_adapter = dev->muxc->adapter[0];
 685         *config->fe = &dev->fe;
 686         dev->ts_mode = config->ts_mode;
 687         dev->ts_clock_inv = config->ts_clock_inv;
 688         dev->ts_clock_gapped = config->ts_clock_gapped;
 689         dev->fw_loaded = false;
 690
 691         i2c_set_clientdata(client, dev);
 692
 693         dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
 694         return 0;
 695 err_kfree:
 696         kfree(dev);
 697 err:
 698         dev_dbg(&client->dev, "failed=%d\n", ret);
 699         return ret;
 700 }
 701
 702 static int si2168_remove(struct i2c_client *client)
 703 {
 704         struct si2168_dev *dev = i2c_get_clientdata(client);
 705
 706         dev_dbg(&client->dev, "\n");
 707
 708         i2c_mux_del_adapters(dev->muxc);
 709
 710         dev->fe.ops.release = NULL;
 711         dev->fe.demodulator_priv = NULL;
 712
 713         kfree(dev);
 714
 715         return 0;
 716 }
 717
 718 static const struct i2c_device_id si2168_id_table[] = {
 719         {"si2168", 0},
 720         {}
 721 };
 722 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 723
 724 static struct i2c_driver si2168_driver = {
 725         .driver = {
 726                 .name   = "si2168",
 727         },
 728         .probe          = si2168_probe,
 729         .remove         = si2168_remove,
 730         .id_table       = si2168_id_table,
 731 };
 732
 733 module_i2c_driver(si2168_driver);
 734
 735 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 736 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 737 MODULE_LICENSE("GPL");
 738 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 739 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 740 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);