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 /* Own I2C adapter locking is needed because of I2C gate logic. */
  24 static int si2168_i2c_master_send_unlocked(const struct i2c_client *client,
  25                                            const char *buf, int count)
  26 {
  27         int ret;
  28         struct i2c_msg msg = {
  29                 .addr = client->addr,
  30                 .flags = 0,
  31                 .len = count,
  32                 .buf = (char *)buf,
  33         };
  34
  35         ret = __i2c_transfer(client->adapter, &msg, 1);
  36         return (ret == 1) ? count : ret;
  37 }
  38
  39 static int si2168_i2c_master_recv_unlocked(const struct i2c_client *client,
  40                                            char *buf, int count)
  41 {
  42         int ret;
  43         struct i2c_msg msg = {
  44                 .addr = client->addr,
  45                 .flags = I2C_M_RD,
  46                 .len = count,
  47                 .buf = buf,
  48         };
  49
  50         ret = __i2c_transfer(client->adapter, &msg, 1);
  51         return (ret == 1) ? count : ret;
  52 }
  53
  54 /* execute firmware command */
  55 static int si2168_cmd_execute_unlocked(struct i2c_client *client,
  56                                        struct si2168_cmd *cmd)
  57 {
  58         int ret;
  59         unsigned long timeout;
  60
  61         if (cmd->wlen) {
  62                 /* write cmd and args for firmware */
  63                 ret = si2168_i2c_master_send_unlocked(client, cmd->args,
  64                                                       cmd->wlen);
  65                 if (ret < 0) {
  66                         goto err;
  67                 } else if (ret != cmd->wlen) {
  68                         ret = -EREMOTEIO;
  69                         goto err;
  70                 }
  71         }
  72
  73         if (cmd->rlen) {
  74                 /* wait cmd execution terminate */
  75                 #define TIMEOUT 70
  76                 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
  77                 while (!time_after(jiffies, timeout)) {
  78                         ret = si2168_i2c_master_recv_unlocked(client, cmd->args,
  79                                                               cmd->rlen);
  80                         if (ret < 0) {
  81                                 goto err;
  82                         } else if (ret != cmd->rlen) {
  83                                 ret = -EREMOTEIO;
  84                                 goto err;
  85                         }
  86
  87                         /* firmware ready? */
  88                         if ((cmd->args[0] >> 7) & 0x01)
  89                                 break;
  90                 }
  91
  92                 dev_dbg(&client->dev, "cmd execution took %d ms\n",
  93                                 jiffies_to_msecs(jiffies) -
  94                                 (jiffies_to_msecs(timeout) - TIMEOUT));
  95
  96                 /* error bit set? */
  97                 if ((cmd->args[0] >> 6) & 0x01) {
  98                         ret = -EREMOTEIO;
  99                         goto err;
 100                 }
 101
 102                 if (!((cmd->args[0] >> 7) & 0x01)) {
 103                         ret = -ETIMEDOUT;
 104                         goto err;
 105                 }
 106         }
 107
 108         return 0;
 109 err:
 110         dev_dbg(&client->dev, "failed=%d\n", ret);
 111         return ret;
 112 }
 113
 114 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
 115 {
 116         int ret;
 117
 118         i2c_lock_adapter(client->adapter);
 119         ret = si2168_cmd_execute_unlocked(client, cmd);
 120         i2c_unlock_adapter(client->adapter);
 121
 122         return ret;
 123 }
 124
 125 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
 126 {
 127         struct i2c_client *client = fe->demodulator_priv;
 128         struct si2168_dev *dev = i2c_get_clientdata(client);
 129         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 130         int ret;
 131         struct si2168_cmd cmd;
 132
 133         *status = 0;
 134
 135         if (!dev->active) {
 136                 ret = -EAGAIN;
 137                 goto err;
 138         }
 139
 140         switch (c->delivery_system) {
 141         case SYS_DVBT:
 142                 memcpy(cmd.args, "\xa0\x01", 2);
 143                 cmd.wlen = 2;
 144                 cmd.rlen = 13;
 145                 break;
 146         case SYS_DVBC_ANNEX_A:
 147                 memcpy(cmd.args, "\x90\x01", 2);
 148                 cmd.wlen = 2;
 149                 cmd.rlen = 9;
 150                 break;
 151         case SYS_DVBT2:
 152                 memcpy(cmd.args, "\x50\x01", 2);
 153                 cmd.wlen = 2;
 154                 cmd.rlen = 14;
 155                 break;
 156         default:
 157                 ret = -EINVAL;
 158                 goto err;
 159         }
 160
 161         ret = si2168_cmd_execute(client, &cmd);
 162         if (ret)
 163                 goto err;
 164
 165         switch ((cmd.args[2] >> 1) & 0x03) {
 166         case 0x01:
 167                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
 168                 break;
 169         case 0x03:
 170                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
 171                                 FE_HAS_SYNC | FE_HAS_LOCK;
 172                 break;
 173         }
 174
 175         dev->fe_status = *status;
 176
 177         if (*status & FE_HAS_LOCK) {
 178                 c->cnr.len = 1;
 179                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 180                 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
 181         } else {
 182                 c->cnr.len = 1;
 183                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 184         }
 185
 186         dev_dbg(&client->dev, "status=%02x args=%*ph\n",
 187                         *status, cmd.rlen, cmd.args);
 188
 189         return 0;
 190 err:
 191         dev_dbg(&client->dev, "failed=%d\n", ret);
 192         return ret;
 193 }
 194
 195 static int si2168_set_frontend(struct dvb_frontend *fe)
 196 {
 197         struct i2c_client *client = fe->demodulator_priv;
 198         struct si2168_dev *dev = i2c_get_clientdata(client);
 199         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 200         int ret;
 201         struct si2168_cmd cmd;
 202         u8 bandwidth, delivery_system;
 203
 204         dev_dbg(&client->dev,
 205                         "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
 206                         c->delivery_system, c->modulation, c->frequency,
 207                         c->bandwidth_hz, c->symbol_rate, c->inversion,
 208                         c->stream_id);
 209
 210         if (!dev->active) {
 211                 ret = -EAGAIN;
 212                 goto err;
 213         }
 214
 215         switch (c->delivery_system) {
 216         case SYS_DVBT:
 217                 delivery_system = 0x20;
 218                 break;
 219         case SYS_DVBC_ANNEX_A:
 220                 delivery_system = 0x30;
 221                 break;
 222         case SYS_DVBT2:
 223                 delivery_system = 0x70;
 224                 break;
 225         default:
 226                 ret = -EINVAL;
 227                 goto err;
 228         }
 229
 230         if (c->bandwidth_hz == 0) {
 231                 ret = -EINVAL;
 232                 goto err;
 233         } else if (c->bandwidth_hz <= 2000000)
 234                 bandwidth = 0x02;
 235         else if (c->bandwidth_hz <= 5000000)
 236                 bandwidth = 0x05;
 237         else if (c->bandwidth_hz <= 6000000)
 238                 bandwidth = 0x06;
 239         else if (c->bandwidth_hz <= 7000000)
 240                 bandwidth = 0x07;
 241         else if (c->bandwidth_hz <= 8000000)
 242                 bandwidth = 0x08;
 243         else if (c->bandwidth_hz <= 9000000)
 244                 bandwidth = 0x09;
 245         else if (c->bandwidth_hz <= 10000000)
 246                 bandwidth = 0x0a;
 247         else
 248                 bandwidth = 0x0f;
 249
 250         /* program tuner */
 251         if (fe->ops.tuner_ops.set_params) {
 252                 ret = fe->ops.tuner_ops.set_params(fe);
 253                 if (ret)
 254                         goto err;
 255         }
 256
 257         memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
 258         cmd.wlen = 5;
 259         cmd.rlen = 5;
 260         ret = si2168_cmd_execute(client, &cmd);
 261         if (ret)
 262                 goto err;
 263
 264         /* that has no big effect */
 265         if (c->delivery_system == SYS_DVBT)
 266                 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
 267         else if (c->delivery_system == SYS_DVBC_ANNEX_A)
 268                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
 269         else if (c->delivery_system == SYS_DVBT2)
 270                 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
 271         cmd.wlen = 6;
 272         cmd.rlen = 3;
 273         ret = si2168_cmd_execute(client, &cmd);
 274         if (ret)
 275                 goto err;
 276
 277         if (c->delivery_system == SYS_DVBT2) {
 278                 /* select PLP */
 279                 cmd.args[0] = 0x52;
 280                 cmd.args[1] = c->stream_id & 0xff;
 281                 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
 282                 cmd.wlen = 3;
 283                 cmd.rlen = 1;
 284                 ret = si2168_cmd_execute(client, &cmd);
 285                 if (ret)
 286                         goto err;
 287         }
 288
 289         memcpy(cmd.args, "\x51\x03", 2);
 290         cmd.wlen = 2;
 291         cmd.rlen = 12;
 292         ret = si2168_cmd_execute(client, &cmd);
 293         if (ret)
 294                 goto err;
 295
 296         memcpy(cmd.args, "\x12\x08\x04", 3);
 297         cmd.wlen = 3;
 298         cmd.rlen = 3;
 299         ret = si2168_cmd_execute(client, &cmd);
 300         if (ret)
 301                 goto err;
 302
 303         memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
 304         cmd.wlen = 6;
 305         cmd.rlen = 4;
 306         ret = si2168_cmd_execute(client, &cmd);
 307         if (ret)
 308                 goto err;
 309
 310         memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
 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\x07\x10\x00\x24", 6);
 318         cmd.wlen = 6;
 319         cmd.rlen = 4;
 320         ret = si2168_cmd_execute(client, &cmd);
 321         if (ret)
 322                 goto err;
 323
 324         memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
 325         cmd.args[4] = delivery_system | bandwidth;
 326         cmd.wlen = 6;
 327         cmd.rlen = 4;
 328         ret = si2168_cmd_execute(client, &cmd);
 329         if (ret)
 330                 goto err;
 331
 332         /* set DVB-C symbol rate */
 333         if (c->delivery_system == SYS_DVBC_ANNEX_A) {
 334                 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
 335                 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
 336                 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
 337                 cmd.wlen = 6;
 338                 cmd.rlen = 4;
 339                 ret = si2168_cmd_execute(client, &cmd);
 340                 if (ret)
 341                         goto err;
 342         }
 343
 344         memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
 345         cmd.wlen = 6;
 346         cmd.rlen = 4;
 347         ret = si2168_cmd_execute(client, &cmd);
 348         if (ret)
 349                 goto err;
 350
 351         memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
 352         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 353         cmd.wlen = 6;
 354         cmd.rlen = 4;
 355         ret = si2168_cmd_execute(client, &cmd);
 356         if (ret)
 357                 goto err;
 358
 359         memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
 360         cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
 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\x01\x12\x00\x00", 6);
 368         cmd.wlen = 6;
 369         cmd.rlen = 4;
 370         ret = si2168_cmd_execute(client, &cmd);
 371         if (ret)
 372                 goto err;
 373
 374         memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
 375         cmd.wlen = 6;
 376         cmd.rlen = 4;
 377         ret = si2168_cmd_execute(client, &cmd);
 378         if (ret)
 379                 goto err;
 380
 381         memcpy(cmd.args, "\x85", 1);
 382         cmd.wlen = 1;
 383         cmd.rlen = 1;
 384         ret = si2168_cmd_execute(client, &cmd);
 385         if (ret)
 386                 goto err;
 387
 388         dev->delivery_system = c->delivery_system;
 389
 390         return 0;
 391 err:
 392         dev_dbg(&client->dev, "failed=%d\n", ret);
 393         return ret;
 394 }
 395
 396 static int si2168_init(struct dvb_frontend *fe)
 397 {
 398         struct i2c_client *client = fe->demodulator_priv;
 399         struct si2168_dev *dev = i2c_get_clientdata(client);
 400         int ret, len, remaining;
 401         const struct firmware *fw;
 402         const char *fw_name;
 403         struct si2168_cmd cmd;
 404         unsigned int chip_id;
 405
 406         dev_dbg(&client->dev, "\n");
 407
 408         /* initialize */
 409         memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
 410         cmd.wlen = 13;
 411         cmd.rlen = 0;
 412         ret = si2168_cmd_execute(client, &cmd);
 413         if (ret)
 414                 goto err;
 415
 416         if (dev->fw_loaded) {
 417                 /* resume */
 418                 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
 419                 cmd.wlen = 8;
 420                 cmd.rlen = 1;
 421                 ret = si2168_cmd_execute(client, &cmd);
 422                 if (ret)
 423                         goto err;
 424
 425                 udelay(100);
 426                 memcpy(cmd.args, "\x85", 1);
 427                 cmd.wlen = 1;
 428                 cmd.rlen = 1;
 429                 ret = si2168_cmd_execute(client, &cmd);
 430                 if (ret)
 431                         goto err;
 432
 433                 goto warm;
 434         }
 435
 436         /* power up */
 437         memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
 438         cmd.wlen = 8;
 439         cmd.rlen = 1;
 440         ret = si2168_cmd_execute(client, &cmd);
 441         if (ret)
 442                 goto err;
 443
 444         /* query chip revision */
 445         memcpy(cmd.args, "\x02", 1);
 446         cmd.wlen = 1;
 447         cmd.rlen = 13;
 448         ret = si2168_cmd_execute(client, &cmd);
 449         if (ret)
 450                 goto err;
 451
 452         chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
 453                         cmd.args[4] << 0;
 454
 455         #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
 456         #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
 457         #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
 458
 459         switch (chip_id) {
 460         case SI2168_A20:
 461                 fw_name = SI2168_A20_FIRMWARE;
 462                 break;
 463         case SI2168_A30:
 464                 fw_name = SI2168_A30_FIRMWARE;
 465                 break;
 466         case SI2168_B40:
 467                 fw_name = SI2168_B40_FIRMWARE;
 468                 break;
 469         default:
 470                 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
 471                                 cmd.args[2], cmd.args[1],
 472                                 cmd.args[3], cmd.args[4]);
 473                 ret = -EINVAL;
 474                 goto err;
 475         }
 476
 477         dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
 478                         cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
 479
 480         /* request the firmware, this will block and timeout */
 481         ret = reject_firmware(&fw, fw_name, &client->dev);
 482         if (ret) {
 483                 /* fallback mechanism to handle old name for Si2168 B40 fw */
 484                 if (chip_id == SI2168_B40) {
 485                         fw_name = SI2168_B40_FIRMWARE_FALLBACK;
 486                         ret = reject_firmware(&fw, fw_name, &client->dev);
 487                 }
 488
 489                 if (ret == 0) {
 490                         dev_notice(&client->dev,
 491                                         "please install firmware file '%s'\n",
 492                                         SI2168_B40_FIRMWARE);
 493                 } else {
 494                         dev_err(&client->dev,
 495                                         "firmware file '%s' not found\n",
 496                                         fw_name);
 497                         goto err_release_firmware;
 498                 }
 499         }
 500
 501         dev_info(&client->dev, "downloading firmware from file '%s'\n",
 502                         fw_name);
 503
 504         if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
 505                 /* firmware is in the new format */
 506                 for (remaining = fw->size; remaining > 0; remaining -= 17) {
 507                         len = fw->data[fw->size - remaining];
 508                         if (len > SI2168_ARGLEN) {
 509                                 ret = -EINVAL;
 510                                 break;
 511                         }
 512                         memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
 513                         cmd.wlen = len;
 514                         cmd.rlen = 1;
 515                         ret = si2168_cmd_execute(client, &cmd);
 516                         if (ret)
 517                                 break;
 518                 }
 519         } else if (fw->size % 8 == 0) {
 520                 /* firmware is in the old format */
 521                 for (remaining = fw->size; remaining > 0; remaining -= 8) {
 522                         len = 8;
 523                         memcpy(cmd.args, &fw->data[fw->size - remaining], len);
 524                         cmd.wlen = len;
 525                         cmd.rlen = 1;
 526                         ret = si2168_cmd_execute(client, &cmd);
 527                         if (ret)
 528                                 break;
 529                 }
 530         } else {
 531                 /* bad or unknown firmware format */
 532                 ret = -EINVAL;
 533         }
 534
 535         if (ret) {
 536                 dev_err(&client->dev, "firmware download failed %d\n", ret);
 537                 goto err_release_firmware;
 538         }
 539
 540         release_firmware(fw);
 541
 542         memcpy(cmd.args, "\x01\x01", 2);
 543         cmd.wlen = 2;
 544         cmd.rlen = 1;
 545         ret = si2168_cmd_execute(client, &cmd);
 546         if (ret)
 547                 goto err;
 548
 549         /* query firmware version */
 550         memcpy(cmd.args, "\x11", 1);
 551         cmd.wlen = 1;
 552         cmd.rlen = 10;
 553         ret = si2168_cmd_execute(client, &cmd);
 554         if (ret)
 555                 goto err;
 556
 557         dev_info(&client->dev, "firmware version: %c.%c.%d\n",
 558                         cmd.args[6], cmd.args[7], cmd.args[8]);
 559
 560         /* set ts mode */
 561         memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
 562         cmd.args[4] |= dev->ts_mode;
 563         if (dev->ts_clock_gapped)
 564                 cmd.args[4] |= 0x40;
 565         cmd.wlen = 6;
 566         cmd.rlen = 4;
 567         ret = si2168_cmd_execute(client, &cmd);
 568         if (ret)
 569                 goto err;
 570
 571         dev->fw_loaded = true;
 572 warm:
 573         dev->active = true;
 574
 575         return 0;
 576
 577 err_release_firmware:
 578         release_firmware(fw);
 579 err:
 580         dev_dbg(&client->dev, "failed=%d\n", ret);
 581         return ret;
 582 }
 583
 584 static int si2168_sleep(struct dvb_frontend *fe)
 585 {
 586         struct i2c_client *client = fe->demodulator_priv;
 587         struct si2168_dev *dev = i2c_get_clientdata(client);
 588         int ret;
 589         struct si2168_cmd cmd;
 590
 591         dev_dbg(&client->dev, "\n");
 592
 593         dev->active = false;
 594
 595         memcpy(cmd.args, "\x13", 1);
 596         cmd.wlen = 1;
 597         cmd.rlen = 0;
 598         ret = si2168_cmd_execute(client, &cmd);
 599         if (ret)
 600                 goto err;
 601
 602         return 0;
 603 err:
 604         dev_dbg(&client->dev, "failed=%d\n", ret);
 605         return ret;
 606 }
 607
 608 static int si2168_get_tune_settings(struct dvb_frontend *fe,
 609         struct dvb_frontend_tune_settings *s)
 610 {
 611         s->min_delay_ms = 900;
 612
 613         return 0;
 614 }
 615
 616 /*
 617  * I2C gate logic
 618  * We must use unlocked I2C I/O because I2C adapter lock is already taken
 619  * by the caller (usually tuner driver).
 620  */
 621 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 622 {
 623         struct i2c_client *client = mux_priv;
 624         int ret;
 625         struct si2168_cmd cmd;
 626
 627         /* open I2C gate */
 628         memcpy(cmd.args, "\xc0\x0d\x01", 3);
 629         cmd.wlen = 3;
 630         cmd.rlen = 0;
 631         ret = si2168_cmd_execute_unlocked(client, &cmd);
 632         if (ret)
 633                 goto err;
 634
 635         return 0;
 636 err:
 637         dev_dbg(&client->dev, "failed=%d\n", ret);
 638         return ret;
 639 }
 640
 641 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
 642 {
 643         struct i2c_client *client = mux_priv;
 644         int ret;
 645         struct si2168_cmd cmd;
 646
 647         /* close I2C gate */
 648         memcpy(cmd.args, "\xc0\x0d\x00", 3);
 649         cmd.wlen = 3;
 650         cmd.rlen = 0;
 651         ret = si2168_cmd_execute_unlocked(client, &cmd);
 652         if (ret)
 653                 goto err;
 654
 655         return 0;
 656 err:
 657         dev_dbg(&client->dev, "failed=%d\n", ret);
 658         return ret;
 659 }
 660
 661 static const struct dvb_frontend_ops si2168_ops = {
 662         .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 663         .info = {
 664                 .name = "Silicon Labs Si2168",
 665                 .symbol_rate_min = 1000000,
 666                 .symbol_rate_max = 7200000,
 667                 .caps = FE_CAN_FEC_1_2 |
 668                         FE_CAN_FEC_2_3 |
 669                         FE_CAN_FEC_3_4 |
 670                         FE_CAN_FEC_5_6 |
 671                         FE_CAN_FEC_7_8 |
 672                         FE_CAN_FEC_AUTO |
 673                         FE_CAN_QPSK |
 674                         FE_CAN_QAM_16 |
 675                         FE_CAN_QAM_32 |
 676                         FE_CAN_QAM_64 |
 677                         FE_CAN_QAM_128 |
 678                         FE_CAN_QAM_256 |
 679                         FE_CAN_QAM_AUTO |
 680                         FE_CAN_TRANSMISSION_MODE_AUTO |
 681                         FE_CAN_GUARD_INTERVAL_AUTO |
 682                         FE_CAN_HIERARCHY_AUTO |
 683                         FE_CAN_MUTE_TS |
 684                         FE_CAN_2G_MODULATION |
 685                         FE_CAN_MULTISTREAM
 686         },
 687
 688         .get_tune_settings = si2168_get_tune_settings,
 689
 690         .init = si2168_init,
 691         .sleep = si2168_sleep,
 692
 693         .set_frontend = si2168_set_frontend,
 694
 695         .read_status = si2168_read_status,
 696 };
 697
 698 static int si2168_probe(struct i2c_client *client,
 699                 const struct i2c_device_id *id)
 700 {
 701         struct si2168_config *config = client->dev.platform_data;
 702         struct si2168_dev *dev;
 703         int ret;
 704
 705         dev_dbg(&client->dev, "\n");
 706
 707         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 708         if (!dev) {
 709                 ret = -ENOMEM;
 710                 dev_err(&client->dev, "kzalloc() failed\n");
 711                 goto err;
 712         }
 713
 714         /* create mux i2c adapter for tuner */
 715         dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
 716                         client, 0, 0, 0, si2168_select, si2168_deselect);
 717         if (dev->adapter == NULL) {
 718                 ret = -ENODEV;
 719                 goto err_kfree;
 720         }
 721
 722         /* create dvb_frontend */
 723         memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 724         dev->fe.demodulator_priv = client;
 725         *config->i2c_adapter = dev->adapter;
 726         *config->fe = &dev->fe;
 727         dev->ts_mode = config->ts_mode;
 728         dev->ts_clock_inv = config->ts_clock_inv;
 729         dev->ts_clock_gapped = config->ts_clock_gapped;
 730         dev->fw_loaded = false;
 731
 732         i2c_set_clientdata(client, dev);
 733
 734         dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
 735         return 0;
 736 err_kfree:
 737         kfree(dev);
 738 err:
 739         dev_dbg(&client->dev, "failed=%d\n", ret);
 740         return ret;
 741 }
 742
 743 static int si2168_remove(struct i2c_client *client)
 744 {
 745         struct si2168_dev *dev = i2c_get_clientdata(client);
 746
 747         dev_dbg(&client->dev, "\n");
 748
 749         i2c_del_mux_adapter(dev->adapter);
 750
 751         dev->fe.ops.release = NULL;
 752         dev->fe.demodulator_priv = NULL;
 753
 754         kfree(dev);
 755
 756         return 0;
 757 }
 758
 759 static const struct i2c_device_id si2168_id_table[] = {
 760         {"si2168", 0},
 761         {}
 762 };
 763 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
 764
 765 static struct i2c_driver si2168_driver = {
 766         .driver = {
 767                 .name   = "si2168",
 768         },
 769         .probe          = si2168_probe,
 770         .remove         = si2168_remove,
 771         .id_table       = si2168_id_table,
 772 };
 773
 774 module_i2c_driver(si2168_driver);
 775
 776 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 777 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
 778 MODULE_LICENSE("GPL");
 779 /*(DEBLOBBED)*/