kernel/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 == 0) {
 184                 ret = -EINVAL;
 185                 goto err;
 186         } else if (c->bandwidth_hz <= 2000000)
 187                 bandwidth = 0x02;
 188         else if (c->bandwidth_hz <= 5000000)
 189                 bandwidth = 0x05;
 190         else if (c->bandwidth_hz <= 6000000)
 191                 bandwidth = 0x06;
 192         else if (c->bandwidth_hz <= 7000000)
 193                 bandwidth = 0x07;
 194         else if (c->bandwidth_hz <= 8000000)
 195                 bandwidth = 0x08;
 196         else if (c->bandwidth_hz <= 9000000)
 197                 bandwidth = 0x09;
 198         else if (c->bandwidth_hz <= 10000000)
 199                 bandwidth = 0x0a;
 200         else
 201                 bandwidth = 0x0f;
 202
 203         /* program tuner */
 204         if (fe->ops.tuner_ops.set_params) {
 205                 ret = fe->ops.tuner_ops.set_params(fe);
 206                 if (ret)
 207                         goto err;
 208         }
 209
 210         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 211         cmd.wlen = 5;
 212         cmd.rlen = 5;
 213         ret = si2168_cmd_execute(client, &cmd);
 214         if (ret)
 215                 goto err;
 216
 217         /* that has no big effect */
 218         if (c->delivery_system == SYS_DVBT)
 219                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 220         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 221                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 222         else if (c->delivery_system == SYS_DVBT2)
 223                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 224         cmd.wlen = 6;
 225         cmd.rlen = 3;
 226         ret = si2168_cmd_execute(client, &cmd);
 227         if (ret)
 228                 goto err;
 229
 230         if (c->delivery_system == SYS_DVBT2) {
 231                 /* select PLP */
 232                 cmd.args[0] = 0x52;
 233                 cmd.args[1] = c->stream_id & 0xff;
 234                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 235                 cmd.wlen = 3;
 236                 cmd.rlen = 1;
 237                 ret = si2168_cmd_execute(client, &cmd);
 238                 if (ret)
 239                         goto err;
 240         }
 241
 242         memcpy(cmd.args, "\x51\x03", 2);
 243         cmd.wlen = 2;
 244         cmd.rlen = 12;
 245         ret = si2168_cmd_execute(client, &cmd);
 246         if (ret)
 247                 goto err;
 248
 249         memcpy(cmd.args, "\x12\x08\x04", 3);
 250         cmd.wlen = 3;
 251         cmd.rlen = 3;
 252         ret = si2168_cmd_execute(client, &cmd);
 253         if (ret)
 254                 goto err;
 255
 256         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 257         cmd.wlen = 6;
 258         cmd.rlen = 4;
 259         ret = si2168_cmd_execute(client, &cmd);
 260         if (ret)
 261                 goto err;
 262
 263         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 264         cmd.wlen = 6;
 265         cmd.rlen = 4;
 266         ret = si2168_cmd_execute(client, &cmd);
 267         if (ret)
 268                 goto err;
 269
 270         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 271         cmd.wlen = 6;
 272         cmd.rlen = 4;
 273         ret = si2168_cmd_execute(client, &cmd);
 274         if (ret)
 275                 goto err;
 276
 277         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 278         cmd.args[4] = delivery_system | bandwidth;
 279         cmd.wlen = 6;
 280         cmd.rlen = 4;
 281         ret = si2168_cmd_execute(client, &cmd);
 282         if (ret)
 283                 goto err;
 284
 285         /* set DVB-C symbol rate */
 286         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 287                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 288                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 289                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 290                 cmd.wlen = 6;
 291                 cmd.rlen = 4;
 292                 ret = si2168_cmd_execute(client, &cmd);
 293                 if (ret)
 294                         goto err;
 295         }
 296
 297         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 298         cmd.wlen = 6;
 299         cmd.rlen = 4;
 300         ret = si2168_cmd_execute(client, &cmd);
 301         if (ret)
 302                 goto err;
 303
 304         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 305         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 306         cmd.wlen = 6;
 307         cmd.rlen = 4;
 308         ret = si2168_cmd_execute(client, &cmd);
 309         if (ret)
 310                 goto err;
 311
 312         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 313         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 314         cmd.wlen = 6;
 315         cmd.rlen = 4;
 316         ret = si2168_cmd_execute(client, &cmd);
 317         if (ret)
 318                 goto err;
 319
 320         memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
 321         cmd.wlen = 6;
 322         cmd.rlen = 4;
 323         ret = si2168_cmd_execute(client, &cmd);
 324         if (ret)
 325                 goto err;
 326
 327         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 328         cmd.wlen = 6;
 329         cmd.rlen = 4;
 330         ret = si2168_cmd_execute(client, &cmd);
 331         if (ret)
 332                 goto err;
 333
 334         memcpy(cmd.args, "\x85", 1);
 335         cmd.wlen = 1;
 336         cmd.rlen = 1;
 337         ret = si2168_cmd_execute(client, &cmd);
 338         if (ret)
 339                 goto err;
 340
 341         dev->delivery_system = c->delivery_system;
 342
 343         return 0;
 344 err:
 345         dev_dbg(&client->dev, "failed=%d\n", ret);
 346         return ret;
 347 }
 348
 349 static int si2168_init(struct dvb_frontend *fe)
 350 {
 351         struct i2c_client *client = fe->demodulator_priv;
 352         struct si2168_dev *dev = i2c_get_clientdata(client);
 353         int ret, len, remaining;
 354         const struct firmware *fw;
 355         const char *fw_name;
 356         struct si2168_cmd cmd;
 357         unsigned int chip_id;
 358
 359         dev_dbg(&client->dev, "\n");
 360
 361         /* initialize */
 362         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 363         cmd.wlen = 13;
 364         cmd.rlen = 0;
 365         ret = si2168_cmd_execute(client, &cmd);
 366         if (ret)
 367                 goto err;
 368
 369         if (dev->fw_loaded) {
 370                 /* resume */
 371                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 372                 cmd.wlen = 8;
 373                 cmd.rlen = 1;
 374                 ret = si2168_cmd_execute(client, &cmd);
 375                 if (ret)
 376                         goto err;
 377
 378                 memcpy(cmd.args, "\x85", 1);
 379                 cmd.wlen = 1;
 380                 cmd.rlen = 1;
 381                 ret = si2168_cmd_execute(client, &cmd);
 382                 if (ret)
 383                         goto err;
 384
 385                 goto warm;
 386         }
 387
 388         /* power up */
 389         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 390         cmd.wlen = 8;
 391         cmd.rlen = 1;
 392         ret = si2168_cmd_execute(client, &cmd);
 393         if (ret)
 394                 goto err;
 395
 396         /* query chip revision */
 397         memcpy(cmd.args, "\x02", 1);
 398         cmd.wlen = 1;
 399         cmd.rlen = 13;
 400         ret = si2168_cmd_execute(client, &cmd);
 401         if (ret)
 402                 goto err;
 403
 404         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 405                         cmd.args[4] << 0;
 406
 407         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 408         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 409         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 410
 411         switch (chip_id) {
 412         case SI2168_A20:
 413                 fw_name = SI2168_A20_FIRMWARE;
 414                 break;
 415         case SI2168_A30:
 416                 fw_name = SI2168_A30_FIRMWARE;
 417                 break;
 418         case SI2168_B40:
 419                 fw_name = SI2168_B40_FIRMWARE;
 420                 break;
 421         default:
 422                 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 423                                 cmd.args[2], cmd.args[1],
 424                                 cmd.args[3], cmd.args[4]);
 425                 ret = -EINVAL;
 426                 goto err;
 427         }
 428
 429         dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
 430                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 431
 432         /* request the firmware, this will block and timeout */
 433         ret = request_firmware(&fw, fw_name, &client->dev);
 434         if (ret) {
 435                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 436                 if (chip_id == SI2168_B40) {
 437                         fw_name = SI2168_B40_FIRMWARE_FALLBACK;
 438                         ret = request_firmware(&fw, fw_name, &client->dev);
 439                 }
 440
 441                 if (ret == 0) {
 442                         dev_notice(&client->dev,
 443                                         "please install firmware file '%s'\n",
 444                                         SI2168_B40_FIRMWARE);
 445                 } else {
 446                         dev_err(&client->dev,
 447                                         "firmware file '%s' not found\n",
 448                                         fw_name);
 449                         goto err_release_firmware;
 450                 }
 451         }
 452
 453         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 454                         fw_name);
 455
 456         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 457                 /* firmware is in the new format */
 458                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 459                         len = fw->data[fw->size - remaining];
 460                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 461                         cmd.wlen = len;
 462                         cmd.rlen = 1;
 463                         ret = si2168_cmd_execute(client, &cmd);
 464                         if (ret)
 465                                 break;
 466                 }
 467         } else if (fw->size % 8 == 0) {
 468                 /* firmware is in the old format */
 469                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 470                         len = 8;
 471                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 472                         cmd.wlen = len;
 473                         cmd.rlen = 1;
 474                         ret = si2168_cmd_execute(client, &cmd);
 475                         if (ret)
 476                                 break;
 477                 }
 478         } else {
 479                 /* bad or unknown firmware format */
 480                 ret = -EINVAL;
 481         }
 482
 483         if (ret) {
 484                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 485                 goto err_release_firmware;
 486         }
 487
 488         release_firmware(fw);
 489
 490         memcpy(cmd.args, "\x01\x01", 2);
 491         cmd.wlen = 2;
 492         cmd.rlen = 1;
 493         ret = si2168_cmd_execute(client, &cmd);
 494         if (ret)
 495                 goto err;
 496
 497         /* query firmware version */
 498         memcpy(cmd.args, "\x11", 1);
 499         cmd.wlen = 1;
 500         cmd.rlen = 10;
 501         ret = si2168_cmd_execute(client, &cmd);
 502         if (ret)
 503                 goto err;
 504
 505         dev_info(&client->dev, "firmware version: %c.%c.%d\n",
 506                         cmd.args[6], cmd.args[7], cmd.args[8]);
 507
 508         /* set ts mode */
 509         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 510         cmd.args[4] |= dev->ts_mode;
 511         cmd.wlen = 6;
 512         cmd.rlen = 4;
 513         ret = si2168_cmd_execute(client, &cmd);
 514         if (ret)
 515                 goto err;
 516
 517         dev->fw_loaded = true;
 518 warm:
 519         dev->active = true;
 520
 521         return 0;
 522
 523 err_release_firmware:
 524         release_firmware(fw);
 525 err:
 526         dev_dbg(&client->dev, "failed=%d\n", ret);
 527         return ret;
 528 }
 529
 530 static int si2168_sleep(struct dvb_frontend *fe)
 531 {
 532         struct i2c_client *client = fe->demodulator_priv;
 533         struct si2168_dev *dev = i2c_get_clientdata(client);
 534         int ret;
 535         struct si2168_cmd cmd;
 536
 537         dev_dbg(&client->dev, "\n");
 538
 539         dev->active = false;
 540
 541         memcpy(cmd.args, "\x13", 1);
 542         cmd.wlen = 1;
 543         cmd.rlen = 0;
 544         ret = si2168_cmd_execute(client, &cmd);
 545         if (ret)
 546                 goto err;
 547
 548         return 0;
 549 err:
 550         dev_dbg(&client->dev, "failed=%d\n", ret);
 551         return ret;
 552 }
 553
 554 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 555         struct dvb_frontend_tune_settings *s)
 556 {
 557         s->min_delay_ms = 900;
 558
 559         return 0;
 560 }
 561
 562 /*
 563  * I2C gate logic
 564  * We must use unlocked i2c_transfer() here because I2C lock is already taken
 565  * by tuner driver.
 566  */
 567 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 568 {
 569         struct i2c_client *client = mux_priv;
 570         struct si2168_dev *dev = i2c_get_clientdata(client);
 571         int ret;
 572         struct i2c_msg gate_open_msg = {
 573                 .addr = client->addr,
 574                 .flags = 0,
 575                 .len = 3,
 576                 .buf = "\xc0\x0d\x01",
 577         };
 578
 579         mutex_lock(&dev->i2c_mutex);
 580
 581         /* open tuner I2C gate */
 582         ret = __i2c_transfer(client->adapter, &gate_open_msg, 1);
 583         if (ret != 1) {
 584                 dev_warn(&client->dev, "i2c write failed=%d\n", ret);
 585                 if (ret >= 0)
 586                         ret = -EREMOTEIO;
 587         } else {
 588                 ret = 0;
 589         }
 590
 591         return ret;
 592 }
 593
 594 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 595 {
 596         struct i2c_client *client = mux_priv;
 597         struct si2168_dev *dev = i2c_get_clientdata(client);
 598         int ret;
 599         struct i2c_msg gate_close_msg = {
 600                 .addr = client->addr,
 601                 .flags = 0,
 602                 .len = 3,
 603                 .buf = "\xc0\x0d\x00",
 604         };
 605
 606         /* close tuner I2C gate */
 607         ret = __i2c_transfer(client->adapter, &gate_close_msg, 1);
 608         if (ret != 1) {
 609                 dev_warn(&client->dev, "i2c write failed=%d\n", ret);
 610                 if (ret >= 0)
 611                         ret = -EREMOTEIO;
 612         } else {
 613                 ret = 0;
 614         }
 615
 616         mutex_unlock(&dev->i2c_mutex);
 617
 618         return ret;
 619 }
 620
 621 static const struct dvb_frontend_ops si2168_ops = {
 622         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 623         .info = {
 624                 .name = "Silicon Labs Si2168",
 625                 .symbol_rate_min = 1000000,
 626                 .symbol_rate_max = 7200000,
 627                 .caps = FE_CAN_FEC_1_2 |
 628                         FE_CAN_FEC_2_3 |
 629                         FE_CAN_FEC_3_4 |
 630                         FE_CAN_FEC_5_6 |
 631                         FE_CAN_FEC_7_8 |
 632                         FE_CAN_FEC_AUTO |
 633                         FE_CAN_QPSK |
 634                         FE_CAN_QAM_16 |
 635                         FE_CAN_QAM_32 |
 636                         FE_CAN_QAM_64 |
 637                         FE_CAN_QAM_128 |
 638                         FE_CAN_QAM_256 |
 639                         FE_CAN_QAM_AUTO |
 640                         FE_CAN_TRANSMISSION_MODE_AUTO |
 641                         FE_CAN_GUARD_INTERVAL_AUTO |
 642                         FE_CAN_HIERARCHY_AUTO |
 643                         FE_CAN_MUTE_TS |
 644                         FE_CAN_2G_MODULATION |
 645                         FE_CAN_MULTISTREAM
 646         },
 647
 648         .get_tune_settings = si2168_get_tune_settings,
 649
 650         .init = si2168_init,
 651         .sleep = si2168_sleep,
 652
 653         .set_frontend = si2168_set_frontend,
 654
 655         .read_status = si2168_read_status,
 656 };
 657
 658 static int si2168_probe(struct i2c_client *client,
 659                 const struct i2c_device_id *id)
 660 {
 661         struct si2168_config *config = client->dev.platform_data;
 662         struct si2168_dev *dev;
 663         int ret;
 664
 665         dev_dbg(&client->dev, "\n");
 666
 667         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 668         if (!dev) {
 669                 ret = -ENOMEM;
 670                 dev_err(&client->dev, "kzalloc() failed\n");
 671                 goto err;
 672         }
 673
 674         mutex_init(&dev->i2c_mutex);
 675
 676         /* create mux i2c adapter for tuner */
 677         dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
 678                         client, 0, 0, 0, si2168_select, si2168_deselect);
 679         if (dev->adapter == NULL) {
 680                 ret = -ENODEV;
 681                 goto err_kfree;
 682         }
 683
 684         /* create dvb_frontend */
 685         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 686         dev->fe.demodulator_priv = client;
 687         *config->i2c_adapter = dev->adapter;
 688         *config->fe = &dev->fe;
 689         dev->ts_mode = config->ts_mode;
 690         dev->ts_clock_inv = config->ts_clock_inv;
 691         dev->fw_loaded = false;
 692
 693         i2c_set_clientdata(client, dev);
 694
 695         dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
 696         return 0;
 697 err_kfree:
 698         kfree(dev);
 699 err:
 700         dev_dbg(&client->dev, "failed=%d\n", ret);
 701         return ret;
 702 }
 703
 704 static int si2168_remove(struct i2c_client *client)
 705 {
 706         struct si2168_dev *dev = i2c_get_clientdata(client);
 707
 708         dev_dbg(&client->dev, "\n");
 709
 710         i2c_del_mux_adapter(dev->adapter);
 711
 712         dev->fe.ops.release = NULL;
 713         dev->fe.demodulator_priv = NULL;
 714
 715         kfree(dev);
 716
 717         return 0;
 718 }
 719
 720 static const struct i2c_device_id si2168_id_table[] = {
 721         {"si2168", 0},
 722         {}
 723 };
 724 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 725
 726 static struct i2c_driver si2168_driver = {
 727         .driver = {
 728                 .owner  = THIS_MODULE,
 729                 .name   = "si2168",
 730         },
 731         .probe          = si2168_probe,
 732         .remove         = si2168_remove,
 733         .id_table       = si2168_id_table,
 734 };
 735
 736 module_i2c_driver(si2168_driver);
 737
 738 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 739 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 740 MODULE_LICENSE("GPL");
 741 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
 742 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
 743 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);