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 <linux/delay.h>
  18
  19 #include "si2168_priv.h"
  20
  21 static const struct dvb_frontend_ops si2168_ops;
  22
  23 /* execute firmware command */
  24 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
  25 {
  26         struct si2168_dev *dev = i2c_get_clientdata(client);
  27         int ret;
  28         unsigned long timeout;
  29
  30         mutex_lock(&dev->i2c_mutex);
  31
  32         if (cmd->wlen) {
  33                 /* write cmd and args for firmware */
  34                 ret = i2c_master_send(client, cmd->args, cmd->wlen);
  35                 if (ret < 0) {
  36                         goto err_mutex_unlock;
  37                 } else if (ret != cmd->wlen) {
  38                         ret = -EREMOTEIO;
  39                         goto err_mutex_unlock;
  40                 }
  41         }
  42
  43         if (cmd->rlen) {
  44                 /* wait cmd execution terminate */
  45                 #define TIMEOUT 70
  46                 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
  47                 while (!time_after(jiffies, timeout)) {
  48                         ret = i2c_master_recv(client, cmd->args, cmd->rlen);
  49                         if (ret < 0) {
  50                                 goto err_mutex_unlock;
  51                         } else if (ret != cmd->rlen) {
  52                                 ret = -EREMOTEIO;
  53                                 goto err_mutex_unlock;
  54                         }
  55
  56                         /* firmware ready? */
  57                         if ((cmd->args[0] >> 7) & 0x01)
  58                                 break;
  59                 }
  60
  61                 dev_dbg(&client->dev, "cmd execution took %d ms\n",
  62                                 jiffies_to_msecs(jiffies) -
  63                                 (jiffies_to_msecs(timeout) - TIMEOUT));
  64
  65                 /* error bit set? */
  66                 if ((cmd->args[0] >> 6) & 0x01) {
  67                         ret = -EREMOTEIO;
  68                         goto err_mutex_unlock;
  69                 }
  70
  71                 if (!((cmd->args[0] >> 7) & 0x01)) {
  72                         ret = -ETIMEDOUT;
  73                         goto err_mutex_unlock;
  74                 }
  75         }
  76
  77         mutex_unlock(&dev->i2c_mutex);
  78         return 0;
  79 err_mutex_unlock:
  80         mutex_unlock(&dev->i2c_mutex);
  81         dev_dbg(&client->dev, "failed=%d\n", ret);
  82         return ret;
  83 }
  84
  85 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
  86 {
  87         struct i2c_client *client = fe->demodulator_priv;
  88         struct si2168_dev *dev = i2c_get_clientdata(client);
  89         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  90         int ret, i;
  91         unsigned int utmp, utmp1, utmp2;
  92         struct si2168_cmd cmd;
  93
  94         *status = 0;
  95
  96         if (!dev->active) {
  97                 ret = -EAGAIN;
  98                 goto err;
  99         }
 100
 101         switch (c->delivery_system) {
 102         case SYS_DVBT:
 103                 memcpy(cmd.args, "\xa0\x01", 2);
 104                 cmd.wlen = 2;
 105                 cmd.rlen = 13;
 106                 break;
 107         case SYS_DVBC_ANNEX_A:
 108                 memcpy(cmd.args, "\x90\x01", 2);
 109                 cmd.wlen = 2;
 110                 cmd.rlen = 9;
 111                 break;
 112         case SYS_DVBT2:
 113                 memcpy(cmd.args, "\x50\x01", 2);
 114                 cmd.wlen = 2;
 115                 cmd.rlen = 14;
 116                 break;
 117         default:
 118                 ret = -EINVAL;
 119                 goto err;
 120         }
 121
 122         ret = si2168_cmd_execute(client, &cmd);
 123         if (ret)
 124                 goto err;
 125
 126         switch ((cmd.args[2] >> 1) & 0x03) {
 127         case 0x01:
 128                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 129                 break;
 130         case 0x03:
 131                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 132                                 FE_HAS_SYNC | FE_HAS_LOCK;
 133                 break;
 134         }
 135
 136         dev->fe_status = *status;
 137
 138         if (*status & FE_HAS_LOCK) {
 139                 c->cnr.len = 1;
 140                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 141                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 142         } else {
 143                 c->cnr.len = 1;
 144                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 145         }
 146
 147         dev_dbg(&client->dev, "status=%02x args=%*ph\n",
 148                         *status, cmd.rlen, cmd.args);
 149
 150         /* BER */
 151         if (*status & FE_HAS_VITERBI) {
 152                 memcpy(cmd.args, "\x82\x00", 2);
 153                 cmd.wlen = 2;
 154                 cmd.rlen = 3;
 155                 ret = si2168_cmd_execute(client, &cmd);
 156                 if (ret)
 157                         goto err;
 158
 159                 /*
 160                  * Firmware returns [0, 255] mantissa and [0, 8] exponent.
 161                  * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8
 162                  */
 163                 utmp = clamp(8 - cmd.args[1], 0, 8);
 164                 for (i = 0, utmp1 = 1; i < utmp; i++)
 165                         utmp1 = utmp1 * 10;
 166
 167                 utmp1 = cmd.args[2] * utmp1;
 168                 utmp2 = 100000000; /* 10^8 */
 169
 170                 dev_dbg(&client->dev,
 171                         "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n",
 172                         utmp1, utmp2, cmd.args[2], cmd.args[1]);
 173
 174                 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 175                 c->post_bit_error.stat[0].uvalue += utmp1;
 176                 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 177                 c->post_bit_count.stat[0].uvalue += utmp2;
 178         } else {
 179                 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 180                 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 181         }
 182
 183         /* UCB */
 184         if (*status & FE_HAS_SYNC) {
 185                 memcpy(cmd.args, "\x84\x01", 2);
 186                 cmd.wlen = 2;
 187                 cmd.rlen = 3;
 188                 ret = si2168_cmd_execute(client, &cmd);
 189                 if (ret)
 190                         goto err;
 191
 192                 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;
 193                 dev_dbg(&client->dev, "block_error=%u\n", utmp1);
 194
 195                 /* Sometimes firmware returns bogus value */
 196                 if (utmp1 == 0xffff)
 197                         utmp1 = 0;
 198
 199                 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 200                 c->block_error.stat[0].uvalue += utmp1;
 201         } else {
 202                 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 203         }
 204
 205         return 0;
 206 err:
 207         dev_dbg(&client->dev, "failed=%d\n", ret);
 208         return ret;
 209 }
 210
 211 static int si2168_set_frontend(struct dvb_frontend *fe)
 212 {
 213         struct i2c_client *client = fe->demodulator_priv;
 214         struct si2168_dev *dev = i2c_get_clientdata(client);
 215         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 216         int ret;
 217         struct si2168_cmd cmd;
 218         u8 bandwidth, delivery_system;
 219
 220         dev_dbg(&client->dev,
 221                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
 222                         c->delivery_system, c->modulation, c->frequency,
 223                         c->bandwidth_hz, c->symbol_rate, c->inversion,
 224                         c->stream_id);
 225
 226         if (!dev->active) {
 227                 ret = -EAGAIN;
 228                 goto err;
 229         }
 230
 231         switch (c->delivery_system) {
 232         case SYS_DVBT:
 233                 delivery_system = 0x20;
 234                 break;
 235         case SYS_DVBC_ANNEX_A:
 236                 delivery_system = 0x30;
 237                 break;
 238         case SYS_DVBT2:
 239                 delivery_system = 0x70;
 240                 break;
 241         default:
 242                 ret = -EINVAL;
 243                 goto err;
 244         }
 245
 246         if (c->bandwidth_hz == 0) {
 247                 ret = -EINVAL;
 248                 goto err;
 249         } else if (c->bandwidth_hz <= 2000000)
 250                 bandwidth = 0x02;
 251         else if (c->bandwidth_hz <= 5000000)
 252                 bandwidth = 0x05;
 253         else if (c->bandwidth_hz <= 6000000)
 254                 bandwidth = 0x06;
 255         else if (c->bandwidth_hz <= 7000000)
 256                 bandwidth = 0x07;
 257         else if (c->bandwidth_hz <= 8000000)
 258                 bandwidth = 0x08;
 259         else if (c->bandwidth_hz <= 9000000)
 260                 bandwidth = 0x09;
 261         else if (c->bandwidth_hz <= 10000000)
 262                 bandwidth = 0x0a;
 263         else
 264                 bandwidth = 0x0f;
 265
 266         /* program tuner */
 267         if (fe->ops.tuner_ops.set_params) {
 268                 ret = fe->ops.tuner_ops.set_params(fe);
 269                 if (ret)
 270                         goto err;
 271         }
 272
 273         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 274         cmd.wlen = 5;
 275         cmd.rlen = 5;
 276         ret = si2168_cmd_execute(client, &cmd);
 277         if (ret)
 278                 goto err;
 279
 280         /* that has no big effect */
 281         if (c->delivery_system == SYS_DVBT)
 282                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 283         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 284                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 285         else if (c->delivery_system == SYS_DVBT2)
 286                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 287         cmd.wlen = 6;
 288         cmd.rlen = 3;
 289         ret = si2168_cmd_execute(client, &cmd);
 290         if (ret)
 291                 goto err;
 292
 293         if (c->delivery_system == SYS_DVBT2) {
 294                 /* select PLP */
 295                 cmd.args[0] = 0x52;
 296                 cmd.args[1] = c->stream_id & 0xff;
 297                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 298                 cmd.wlen = 3;
 299                 cmd.rlen = 1;
 300                 ret = si2168_cmd_execute(client, &cmd);
 301                 if (ret)
 302                         goto err;
 303         }
 304
 305         memcpy(cmd.args, "\x51\x03", 2);
 306         cmd.wlen = 2;
 307         cmd.rlen = 12;
 308         ret = si2168_cmd_execute(client, &cmd);
 309         if (ret)
 310                 goto err;
 311
 312         memcpy(cmd.args, "\x12\x08\x04", 3);
 313         cmd.wlen = 3;
 314         cmd.rlen = 3;
 315         ret = si2168_cmd_execute(client, &cmd);
 316         if (ret)
 317                 goto err;
 318
 319         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 320         cmd.wlen = 6;
 321         cmd.rlen = 4;
 322         ret = si2168_cmd_execute(client, &cmd);
 323         if (ret)
 324                 goto err;
 325
 326         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 327         cmd.wlen = 6;
 328         cmd.rlen = 4;
 329         ret = si2168_cmd_execute(client, &cmd);
 330         if (ret)
 331                 goto err;
 332
 333         memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
 334         cmd.wlen = 6;
 335         cmd.rlen = 4;
 336         ret = si2168_cmd_execute(client, &cmd);
 337         if (ret)
 338                 goto err;
 339
 340         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 341         cmd.args[4] = delivery_system | bandwidth;
 342         cmd.wlen = 6;
 343         cmd.rlen = 4;
 344         ret = si2168_cmd_execute(client, &cmd);
 345         if (ret)
 346                 goto err;
 347
 348         /* set DVB-C symbol rate */
 349         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 350                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 351                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 352                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 353                 cmd.wlen = 6;
 354                 cmd.rlen = 4;
 355                 ret = si2168_cmd_execute(client, &cmd);
 356                 if (ret)
 357                         goto err;
 358         }
 359
 360         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 361         cmd.wlen = 6;
 362         cmd.rlen = 4;
 363         ret = si2168_cmd_execute(client, &cmd);
 364         if (ret)
 365                 goto err;
 366
 367         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 368         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 369         cmd.wlen = 6;
 370         cmd.rlen = 4;
 371         ret = si2168_cmd_execute(client, &cmd);
 372         if (ret)
 373                 goto err;
 374
 375         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 376         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 377         cmd.wlen = 6;
 378         cmd.rlen = 4;
 379         ret = si2168_cmd_execute(client, &cmd);
 380         if (ret)
 381                 goto err;
 382
 383         memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
 384         cmd.wlen = 6;
 385         cmd.rlen = 4;
 386         ret = si2168_cmd_execute(client, &cmd);
 387         if (ret)
 388                 goto err;
 389
 390         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 391         cmd.wlen = 6;
 392         cmd.rlen = 4;
 393         ret = si2168_cmd_execute(client, &cmd);
 394         if (ret)
 395                 goto err;
 396
 397         memcpy(cmd.args, "\x85", 1);
 398         cmd.wlen = 1;
 399         cmd.rlen = 1;
 400         ret = si2168_cmd_execute(client, &cmd);
 401         if (ret)
 402                 goto err;
 403
 404         dev->delivery_system = c->delivery_system;
 405
 406         return 0;
 407 err:
 408         dev_dbg(&client->dev, "failed=%d\n", ret);
 409         return ret;
 410 }
 411
 412 static int si2168_init(struct dvb_frontend *fe)
 413 {
 414         struct i2c_client *client = fe->demodulator_priv;
 415         struct si2168_dev *dev = i2c_get_clientdata(client);
 416         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 417         int ret, len, remaining;
 418         const struct firmware *fw;
 419         struct si2168_cmd cmd;
 420
 421         dev_dbg(&client->dev, "\n");
 422
 423         /* initialize */
 424         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 425         cmd.wlen = 13;
 426         cmd.rlen = 0;
 427         ret = si2168_cmd_execute(client, &cmd);
 428         if (ret)
 429                 goto err;
 430
 431         if (dev->warm) {
 432                 /* resume */
 433                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 434                 cmd.wlen = 8;
 435                 cmd.rlen = 1;
 436                 ret = si2168_cmd_execute(client, &cmd);
 437                 if (ret)
 438                         goto err;
 439
 440                 udelay(100);
 441                 memcpy(cmd.args, "\x85", 1);
 442                 cmd.wlen = 1;
 443                 cmd.rlen = 1;
 444                 ret = si2168_cmd_execute(client, &cmd);
 445                 if (ret)
 446                         goto err;
 447
 448                 goto warm;
 449         }
 450
 451         /* power up */
 452         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 453         cmd.wlen = 8;
 454         cmd.rlen = 1;
 455         ret = si2168_cmd_execute(client, &cmd);
 456         if (ret)
 457                 goto err;
 458
 459         /* request the firmware, this will block and timeout */
 460         ret = reject_firmware(&fw, dev->firmware_name, &client->dev);
 461         if (ret) {
 462                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 463                 if (dev->chip_id == SI2168_CHIP_ID_B40) {
 464                         dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK;
 465                         ret = reject_firmware(&fw, dev->firmware_name,
 466                                                &client->dev);
 467                 }
 468
 469                 if (ret == 0) {
 470                         dev_notice(&client->dev,
 471                                         "please install firmware file '%s'\n",
 472                                         SI2168_B40_FIRMWARE);
 473                 } else {
 474                         dev_err(&client->dev,
 475                                         "firmware file '%s' not found\n",
 476                                         dev->firmware_name);
 477                         goto err_release_firmware;
 478                 }
 479         }
 480
 481         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 482                         dev->firmware_name);
 483
 484         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 485                 /* firmware is in the new format */
 486                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 487                         len = fw->data[fw->size - remaining];
 488                         if (len > SI2168_ARGLEN) {
 489                                 ret = -EINVAL;
 490                                 break;
 491                         }
 492                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 493                         cmd.wlen = len;
 494                         cmd.rlen = 1;
 495                         ret = si2168_cmd_execute(client, &cmd);
 496                         if (ret)
 497                                 break;
 498                 }
 499         } else if (fw->size % 8 == 0) {
 500                 /* firmware is in the old format */
 501                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 502                         len = 8;
 503                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 504                         cmd.wlen = len;
 505                         cmd.rlen = 1;
 506                         ret = si2168_cmd_execute(client, &cmd);
 507                         if (ret)
 508                                 break;
 509                 }
 510         } else {
 511                 /* bad or unknown firmware format */
 512                 ret = -EINVAL;
 513         }
 514
 515         if (ret) {
 516                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 517                 goto err_release_firmware;
 518         }
 519
 520         release_firmware(fw);
 521
 522         memcpy(cmd.args, "\x01\x01", 2);
 523         cmd.wlen = 2;
 524         cmd.rlen = 1;
 525         ret = si2168_cmd_execute(client, &cmd);
 526         if (ret)
 527                 goto err;
 528
 529         /* query firmware version */
 530         memcpy(cmd.args, "\x11", 1);
 531         cmd.wlen = 1;
 532         cmd.rlen = 10;
 533         ret = si2168_cmd_execute(client, &cmd);
 534         if (ret)
 535                 goto err;
 536
 537         dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |
 538                        (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;
 539         dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
 540                  dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
 541                  dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
 542
 543         /* set ts mode */
 544         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 545         cmd.args[4] |= dev->ts_mode;
 546         if (dev->ts_clock_gapped)
 547                 cmd.args[4] |= 0x40;
 548         cmd.wlen = 6;
 549         cmd.rlen = 4;
 550         ret = si2168_cmd_execute(client, &cmd);
 551         if (ret)
 552                 goto err;
 553
 554         dev->warm = true;
 555 warm:
 556         /* Init stats here to indicate which stats are supported */
 557         c->cnr.len = 1;
 558         c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 559         c->post_bit_error.len = 1;
 560         c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 561         c->post_bit_count.len = 1;
 562         c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 563         c->block_error.len = 1;
 564         c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 565
 566         dev->active = true;
 567
 568         return 0;
 569 err_release_firmware:
 570         release_firmware(fw);
 571 err:
 572         dev_dbg(&client->dev, "failed=%d\n", ret);
 573         return ret;
 574 }
 575
 576 static int si2168_sleep(struct dvb_frontend *fe)
 577 {
 578         struct i2c_client *client = fe->demodulator_priv;
 579         struct si2168_dev *dev = i2c_get_clientdata(client);
 580         int ret;
 581         struct si2168_cmd cmd;
 582
 583         dev_dbg(&client->dev, "\n");
 584
 585         dev->active = false;
 586
 587         /* Firmware B 4.0-11 or later loses warm state during sleep */
 588         if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))
 589                 dev->warm = false;
 590
 591         memcpy(cmd.args, "\x13", 1);
 592         cmd.wlen = 1;
 593         cmd.rlen = 0;
 594         ret = si2168_cmd_execute(client, &cmd);
 595         if (ret)
 596                 goto err;
 597
 598         return 0;
 599 err:
 600         dev_dbg(&client->dev, "failed=%d\n", ret);
 601         return ret;
 602 }
 603
 604 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 605         struct dvb_frontend_tune_settings *s)
 606 {
 607         s->min_delay_ms = 900;
 608
 609         return 0;
 610 }
 611
 612 static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
 613 {
 614         struct i2c_client *client = i2c_mux_priv(muxc);
 615         int ret;
 616         struct si2168_cmd cmd;
 617
 618         /* open I2C gate */
 619         memcpy(cmd.args, "\xc0\x0d\x01", 3);
 620         cmd.wlen = 3;
 621         cmd.rlen = 0;
 622         ret = si2168_cmd_execute(client, &cmd);
 623         if (ret)
 624                 goto err;
 625
 626         return 0;
 627 err:
 628         dev_dbg(&client->dev, "failed=%d\n", ret);
 629         return ret;
 630 }
 631
 632 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
 633 {
 634         struct i2c_client *client = i2c_mux_priv(muxc);
 635         int ret;
 636         struct si2168_cmd cmd;
 637
 638         /* close I2C gate */
 639         memcpy(cmd.args, "\xc0\x0d\x00", 3);
 640         cmd.wlen = 3;
 641         cmd.rlen = 0;
 642         ret = si2168_cmd_execute(client, &cmd);
 643         if (ret)
 644                 goto err;
 645
 646         return 0;
 647 err:
 648         dev_dbg(&client->dev, "failed=%d\n", ret);
 649         return ret;
 650 }
 651
 652 static const struct dvb_frontend_ops si2168_ops = {
 653         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 654         .info = {
 655                 .name = "Silicon Labs Si2168",
 656                 .symbol_rate_min = 1000000,
 657                 .symbol_rate_max = 7200000,
 658                 .caps = FE_CAN_FEC_1_2 |
 659                         FE_CAN_FEC_2_3 |
 660                         FE_CAN_FEC_3_4 |
 661                         FE_CAN_FEC_5_6 |
 662                         FE_CAN_FEC_7_8 |
 663                         FE_CAN_FEC_AUTO |
 664                         FE_CAN_QPSK |
 665                         FE_CAN_QAM_16 |
 666                         FE_CAN_QAM_32 |
 667                         FE_CAN_QAM_64 |
 668                         FE_CAN_QAM_128 |
 669                         FE_CAN_QAM_256 |
 670                         FE_CAN_QAM_AUTO |
 671                         FE_CAN_TRANSMISSION_MODE_AUTO |
 672                         FE_CAN_GUARD_INTERVAL_AUTO |
 673                         FE_CAN_HIERARCHY_AUTO |
 674                         FE_CAN_MUTE_TS |
 675                         FE_CAN_2G_MODULATION |
 676                         FE_CAN_MULTISTREAM
 677         },
 678
 679         .get_tune_settings = si2168_get_tune_settings,
 680
 681         .init = si2168_init,
 682         .sleep = si2168_sleep,
 683
 684         .set_frontend = si2168_set_frontend,
 685
 686         .read_status = si2168_read_status,
 687 };
 688
 689 static int si2168_probe(struct i2c_client *client,
 690                 const struct i2c_device_id *id)
 691 {
 692         struct si2168_config *config = client->dev.platform_data;
 693         struct si2168_dev *dev;
 694         int ret;
 695         struct si2168_cmd cmd;
 696
 697         dev_dbg(&client->dev, "\n");
 698
 699         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 700         if (!dev) {
 701                 ret = -ENOMEM;
 702                 dev_err(&client->dev, "kzalloc() failed\n");
 703                 goto err;
 704         }
 705
 706         i2c_set_clientdata(client, dev);
 707         mutex_init(&dev->i2c_mutex);
 708
 709         /* Initialize */
 710         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 711         cmd.wlen = 13;
 712         cmd.rlen = 0;
 713         ret = si2168_cmd_execute(client, &cmd);
 714         if (ret)
 715                 goto err_kfree;
 716
 717         /* Power up */
 718         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 719         cmd.wlen = 8;
 720         cmd.rlen = 1;
 721         ret = si2168_cmd_execute(client, &cmd);
 722         if (ret)
 723                 goto err_kfree;
 724
 725         /* Query chip revision */
 726         memcpy(cmd.args, "\x02", 1);
 727         cmd.wlen = 1;
 728         cmd.rlen = 13;
 729         ret = si2168_cmd_execute(client, &cmd);
 730         if (ret)
 731                 goto err_kfree;
 732
 733         dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |
 734                        cmd.args[3] << 8 | cmd.args[4] << 0;
 735
 736         switch (dev->chip_id) {
 737         case SI2168_CHIP_ID_A20:
 738                 dev->firmware_name = SI2168_A20_FIRMWARE;
 739                 break;
 740         case SI2168_CHIP_ID_A30:
 741                 dev->firmware_name = SI2168_A30_FIRMWARE;
 742                 break;
 743         case SI2168_CHIP_ID_B40:
 744                 dev->firmware_name = SI2168_B40_FIRMWARE;
 745                 break;
 746         case SI2168_CHIP_ID_D60:
 747                 dev->firmware_name = SI2168_D60_FIRMWARE;
 748                 break;
 749         default:
 750                 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 751                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 752                 ret = -ENODEV;
 753                 goto err_kfree;
 754         }
 755
 756         dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |
 757                        (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;
 758
 759         /* create mux i2c adapter for tuner */
 760         dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
 761                                   1, 0, I2C_MUX_LOCKED,
 762                                   si2168_select, si2168_deselect);
 763         if (!dev->muxc) {
 764                 ret = -ENOMEM;
 765                 goto err_kfree;
 766         }
 767         dev->muxc->priv = client;
 768         ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
 769         if (ret)
 770                 goto err_kfree;
 771
 772         /* create dvb_frontend */
 773         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 774         dev->fe.demodulator_priv = client;
 775         *config->i2c_adapter = dev->muxc->adapter[0];
 776         *config->fe = &dev->fe;
 777         dev->ts_mode = config->ts_mode;
 778         dev->ts_clock_inv = config->ts_clock_inv;
 779         dev->ts_clock_gapped = config->ts_clock_gapped;
 780
 781         dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
 782                  dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
 783                  dev->version >> 8 & 0xff);
 784         dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
 785                  dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
 786                  dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
 787
 788         return 0;
 789 err_kfree:
 790         kfree(dev);
 791 err:
 792         dev_dbg(&client->dev, "failed=%d\n", ret);
 793         return ret;
 794 }
 795
 796 static int si2168_remove(struct i2c_client *client)
 797 {
 798         struct si2168_dev *dev = i2c_get_clientdata(client);
 799
 800         dev_dbg(&client->dev, "\n");
 801
 802         i2c_mux_del_adapters(dev->muxc);
 803
 804         dev->fe.ops.release = NULL;
 805         dev->fe.demodulator_priv = NULL;
 806
 807         kfree(dev);
 808
 809         return 0;
 810 }
 811
 812 static const struct i2c_device_id si2168_id_table[] = {
 813         {"si2168", 0},
 814         {}
 815 };
 816 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 817
 818 static struct i2c_driver si2168_driver = {
 819         .driver = {
 820                 .name                = "si2168",
 821                 .suppress_bind_attrs = true,
 822         },
 823         .probe          = si2168_probe,
 824         .remove         = si2168_remove,
 825         .id_table       = si2168_id_table,
 826 };
 827
 828 module_i2c_driver(si2168_driver);
 829
 830 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 831 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 832 MODULE_LICENSE("GPL");
 833 /*(DEBLOBBED)*/