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