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 si2168 *s, struct si2168_cmd *cmd) 23 { 24 int ret; 25 unsigned long timeout; 26 27 mutex_lock(&s->i2c_mutex); 28 29 if (cmd->wlen) { 30 /* write cmd and args for firmware */ 31 ret = i2c_master_send(s->client, cmd->args, cmd->wlen); 32 if (ret < 0) { 33 goto err_mutex_unlock; 34 } else if (ret != cmd->wlen) { 35 ret = -EREMOTEIO; 36 goto err_mutex_unlock; 37 } 38 } 39 40 if (cmd->rlen) { 41 /* wait cmd execution terminate */ 42 #define TIMEOUT 50 43 timeout = jiffies + msecs_to_jiffies(TIMEOUT); 44 while (!time_after(jiffies, timeout)) { 45 ret = i2c_master_recv(s->client, cmd->args, cmd->rlen); 46 if (ret < 0) { 47 goto err_mutex_unlock; 48 } else if (ret != cmd->rlen) { 49 ret = -EREMOTEIO; 50 goto err_mutex_unlock; 51 } 52 53 /* firmware ready? */ 54 if ((cmd->args[0] >> 7) & 0x01) 55 break; 56 } 57 58 dev_dbg(&s->client->dev, "cmd execution took %d ms\n", 59 jiffies_to_msecs(jiffies) - 60 (jiffies_to_msecs(timeout) - TIMEOUT)); 61 62 if (!((cmd->args[0] >> 7) & 0x01)) { 63 ret = -ETIMEDOUT; 64 goto err_mutex_unlock; 65 } 66 } 67 68 ret = 0; 69 70 err_mutex_unlock: 71 mutex_unlock(&s->i2c_mutex); 72 if (ret) 73 goto err; 74 75 return 0; 76 err: 77 dev_dbg(&s->client->dev, "failed=%d\n", ret); 78 return ret; 79 } 80 81 static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status) 82 { 83 struct si2168 *s = fe->demodulator_priv; 84 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 85 int ret; 86 struct si2168_cmd cmd; 87 88 *status = 0; 89 90 if (!s->active) { 91 ret = -EAGAIN; 92 goto err; 93 } 94 95 switch (c->delivery_system) { 96 case SYS_DVBT: 97 memcpy(cmd.args, "\xa0\x01", 2); 98 cmd.wlen = 2; 99 cmd.rlen = 13; 100 break; 101 case SYS_DVBC_ANNEX_A: 102 memcpy(cmd.args, "\x90\x01", 2); 103 cmd.wlen = 2; 104 cmd.rlen = 9; 105 break; 106 case SYS_DVBT2: 107 memcpy(cmd.args, "\x50\x01", 2); 108 cmd.wlen = 2; 109 cmd.rlen = 14; 110 break; 111 default: 112 ret = -EINVAL; 113 goto err; 114 } 115 116 ret = si2168_cmd_execute(s, &cmd); 117 if (ret) 118 goto err; 119 120 /* 121 * Possible values seen, in order from strong signal to weak: 122 * 16 0001 0110 full lock 123 * 1e 0001 1110 partial lock 124 * 1a 0001 1010 partial lock 125 * 18 0001 1000 no lock 126 * 127 * [b3:b1] lock bits 128 * [b4] statistics ready? Set in a few secs after lock is gained. 129 */ 130 131 switch ((cmd.args[2] >> 1) & 0x03) { 132 case 0x01: 133 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 134 break; 135 case 0x03: 136 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 137 FE_HAS_SYNC | FE_HAS_LOCK; 138 break; 139 } 140 141 s->fe_status = *status; 142 143 if (*status & FE_HAS_LOCK) { 144 c->cnr.len = 1; 145 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 146 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 147 } else { 148 c->cnr.len = 1; 149 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 150 } 151 152 dev_dbg(&s->client->dev, "status=%02x args=%*ph\n", 153 *status, cmd.rlen, cmd.args); 154 155 return 0; 156 err: 157 dev_dbg(&s->client->dev, "failed=%d\n", ret); 158 return ret; 159 } 160 161 static int si2168_set_frontend(struct dvb_frontend *fe) 162 { 163 struct si2168 *s = fe->demodulator_priv; 164 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 165 int ret; 166 struct si2168_cmd cmd; 167 u8 bandwidth, delivery_system; 168 169 dev_dbg(&s->client->dev, 170 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u, stream_id=%d\n", 171 c->delivery_system, c->modulation, 172 c->frequency, c->bandwidth_hz, c->symbol_rate, 173 c->inversion, c->stream_id); 174 175 if (!s->active) { 176 ret = -EAGAIN; 177 goto err; 178 } 179 180 switch (c->delivery_system) { 181 case SYS_DVBT: 182 delivery_system = 0x20; 183 break; 184 case SYS_DVBC_ANNEX_A: 185 delivery_system = 0x30; 186 break; 187 case SYS_DVBT2: 188 delivery_system = 0x70; 189 break; 190 default: 191 ret = -EINVAL; 192 goto err; 193 } 194 195 if (c->bandwidth_hz <= 5000000) 196 bandwidth = 0x05; 197 else if (c->bandwidth_hz <= 6000000) 198 bandwidth = 0x06; 199 else if (c->bandwidth_hz <= 7000000) 200 bandwidth = 0x07; 201 else if (c->bandwidth_hz <= 8000000) 202 bandwidth = 0x08; 203 else if (c->bandwidth_hz <= 9000000) 204 bandwidth = 0x09; 205 else if (c->bandwidth_hz <= 10000000) 206 bandwidth = 0x0a; 207 else 208 bandwidth = 0x0f; 209 210 /* program tuner */ 211 if (fe->ops.tuner_ops.set_params) { 212 ret = fe->ops.tuner_ops.set_params(fe); 213 if (ret) 214 goto err; 215 } 216 217 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 218 cmd.wlen = 5; 219 cmd.rlen = 5; 220 ret = si2168_cmd_execute(s, &cmd); 221 if (ret) 222 goto err; 223 224 /* that has no big effect */ 225 if (c->delivery_system == SYS_DVBT) 226 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 227 else if (c->delivery_system == SYS_DVBC_ANNEX_A) 228 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 229 else if (c->delivery_system == SYS_DVBT2) 230 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 231 cmd.wlen = 6; 232 cmd.rlen = 3; 233 ret = si2168_cmd_execute(s, &cmd); 234 if (ret) 235 goto err; 236 237 if (c->delivery_system == SYS_DVBT2) { 238 /* select PLP */ 239 cmd.args[0] = 0x52; 240 cmd.args[1] = c->stream_id & 0xff; 241 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 242 cmd.wlen = 3; 243 cmd.rlen = 1; 244 ret = si2168_cmd_execute(s, &cmd); 245 if (ret) 246 goto err; 247 } 248 249 memcpy(cmd.args, "\x51\x03", 2); 250 cmd.wlen = 2; 251 cmd.rlen = 12; 252 ret = si2168_cmd_execute(s, &cmd); 253 if (ret) 254 goto err; 255 256 memcpy(cmd.args, "\x12\x08\x04", 3); 257 cmd.wlen = 3; 258 cmd.rlen = 3; 259 ret = si2168_cmd_execute(s, &cmd); 260 if (ret) 261 goto err; 262 263 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 264 cmd.wlen = 6; 265 cmd.rlen = 4; 266 ret = si2168_cmd_execute(s, &cmd); 267 if (ret) 268 goto err; 269 270 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 271 cmd.wlen = 6; 272 cmd.rlen = 4; 273 ret = si2168_cmd_execute(s, &cmd); 274 if (ret) 275 goto err; 276 277 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 278 cmd.wlen = 6; 279 cmd.rlen = 4; 280 ret = si2168_cmd_execute(s, &cmd); 281 if (ret) 282 goto err; 283 284 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 285 cmd.args[4] = delivery_system | bandwidth; 286 cmd.wlen = 6; 287 cmd.rlen = 4; 288 ret = si2168_cmd_execute(s, &cmd); 289 if (ret) 290 goto err; 291 292 /* set DVB-C symbol rate */ 293 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 294 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 295 cmd.args[4] = (c->symbol_rate / 1000) & 0xff; 296 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 297 cmd.wlen = 6; 298 cmd.rlen = 4; 299 ret = si2168_cmd_execute(s, &cmd); 300 if (ret) 301 goto err; 302 } 303 304 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 305 cmd.wlen = 6; 306 cmd.rlen = 4; 307 ret = si2168_cmd_execute(s, &cmd); 308 if (ret) 309 goto err; 310 311 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6); 312 cmd.args[5] |= s->ts_clock_inv ? 0x00 : 0x10; 313 cmd.wlen = 6; 314 cmd.rlen = 4; 315 ret = si2168_cmd_execute(s, &cmd); 316 if (ret) 317 goto err; 318 319 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 320 cmd.args[5] |= s->ts_clock_inv ? 0x00 : 0x10; 321 cmd.wlen = 6; 322 cmd.rlen = 4; 323 ret = si2168_cmd_execute(s, &cmd); 324 if (ret) 325 goto err; 326 327 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 328 cmd.wlen = 6; 329 cmd.rlen = 4; 330 ret = si2168_cmd_execute(s, &cmd); 331 if (ret) 332 goto err; 333 334 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 335 cmd.wlen = 6; 336 cmd.rlen = 4; 337 ret = si2168_cmd_execute(s, &cmd); 338 if (ret) 339 goto err; 340 341 memcpy(cmd.args, "\x85", 1); 342 cmd.wlen = 1; 343 cmd.rlen = 1; 344 ret = si2168_cmd_execute(s, &cmd); 345 if (ret) 346 goto err; 347 348 s->delivery_system = c->delivery_system; 349 350 return 0; 351 err: 352 dev_dbg(&s->client->dev, "failed=%d\n", ret); 353 return ret; 354 } 355 356 static int si2168_init(struct dvb_frontend *fe) 357 { 358 struct si2168 *s = fe->demodulator_priv; 359 int ret, len, remaining; 360 const struct firmware *fw = NULL; 361 u8 *fw_file; 362 const unsigned int i2c_wr_max = 8; 363 struct si2168_cmd cmd; 364 unsigned int chip_id; 365 366 dev_dbg(&s->client->dev, "\n"); 367 368 /* initialize */ 369 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 370 cmd.wlen = 13; 371 cmd.rlen = 0; 372 ret = si2168_cmd_execute(s, &cmd); 373 if (ret) 374 goto err; 375 376 if (s->fw_loaded) { 377 /* resume */ 378 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 379 cmd.wlen = 8; 380 cmd.rlen = 1; 381 ret = si2168_cmd_execute(s, &cmd); 382 if (ret) 383 goto err; 384 385 memcpy(cmd.args, "\x85", 1); 386 cmd.wlen = 1; 387 cmd.rlen = 1; 388 ret = si2168_cmd_execute(s, &cmd); 389 if (ret) 390 goto err; 391 392 goto warm; 393 } 394 395 /* power up */ 396 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 397 cmd.wlen = 8; 398 cmd.rlen = 1; 399 ret = si2168_cmd_execute(s, &cmd); 400 if (ret) 401 goto err; 402 403 /* query chip revision */ 404 memcpy(cmd.args, "\x02", 1); 405 cmd.wlen = 1; 406 cmd.rlen = 13; 407 ret = si2168_cmd_execute(s, &cmd); 408 if (ret) 409 goto err; 410 411 chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 | 412 cmd.args[4] << 0; 413 414 #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0) 415 #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0) 416 #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0) 417 418 switch (chip_id) { 419 case SI2168_A20: 420 fw_file = SI2168_A20_FIRMWARE; 421 break; 422 case SI2168_A30: 423 fw_file = SI2168_A30_FIRMWARE; 424 break; 425 case SI2168_B40: 426 fw_file = SI2168_B40_FIRMWARE; 427 break; 428 default: 429 dev_err(&s->client->dev, 430 "unknown chip version Si21%d-%c%c%c\n", 431 cmd.args[2], cmd.args[1], 432 cmd.args[3], cmd.args[4]); 433 ret = -EINVAL; 434 goto err; 435 } 436 437 /* cold state - try to download firmware */ 438 dev_info(&s->client->dev, "found a '%s' in cold state\n", 439 si2168_ops.info.name); 440 441 /* request the firmware, this will block and timeout */ 442 ret = request_firmware(&fw, fw_file, &s->client->dev); 443 if (ret) { 444 /* fallback mechanism to handle old name for Si2168 B40 fw */ 445 if (chip_id == SI2168_B40) { 446 fw_file = SI2168_B40_FIRMWARE_FALLBACK; 447 ret = request_firmware(&fw, fw_file, &s->client->dev); 448 } 449 450 if (ret == 0) { 451 dev_notice(&s->client->dev, 452 "please install firmware file '%s'\n", 453 SI2168_B40_FIRMWARE); 454 } else { 455 dev_err(&s->client->dev, 456 "firmware file '%s' not found\n", 457 fw_file); 458 goto error_fw_release; 459 } 460 } 461 462 dev_info(&s->client->dev, "downloading firmware from file '%s'\n", 463 fw_file); 464 465 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 466 /* firmware is in the new format */ 467 for (remaining = fw->size; remaining > 0; remaining -= 17) { 468 len = fw->data[fw->size - remaining]; 469 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 470 cmd.wlen = len; 471 cmd.rlen = 1; 472 ret = si2168_cmd_execute(s, &cmd); 473 if (ret) { 474 dev_err(&s->client->dev, 475 "firmware download failed=%d\n", 476 ret); 477 goto error_fw_release; 478 } 479 } 480 } else { 481 /* firmware is in the old format */ 482 for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) { 483 len = remaining; 484 if (len > i2c_wr_max) 485 len = i2c_wr_max; 486 487 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 488 cmd.wlen = len; 489 cmd.rlen = 1; 490 ret = si2168_cmd_execute(s, &cmd); 491 if (ret) { 492 dev_err(&s->client->dev, 493 "firmware download failed=%d\n", 494 ret); 495 goto error_fw_release; 496 } 497 } 498 } 499 500 release_firmware(fw); 501 fw = NULL; 502 503 memcpy(cmd.args, "\x01\x01", 2); 504 cmd.wlen = 2; 505 cmd.rlen = 1; 506 ret = si2168_cmd_execute(s, &cmd); 507 if (ret) 508 goto err; 509 510 /* query firmware version */ 511 memcpy(cmd.args, "\x11", 1); 512 cmd.wlen = 1; 513 cmd.rlen = 10; 514 ret = si2168_cmd_execute(s, &cmd); 515 if (ret) 516 goto err; 517 518 dev_dbg(&s->client->dev, "firmware version: %c.%c.%d\n", 519 cmd.args[6], cmd.args[7], cmd.args[8]); 520 521 /* set ts mode */ 522 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 523 cmd.args[4] |= s->ts_mode; 524 cmd.wlen = 6; 525 cmd.rlen = 4; 526 ret = si2168_cmd_execute(s, &cmd); 527 if (ret) 528 goto err; 529 530 s->fw_loaded = true; 531 532 dev_info(&s->client->dev, "found a '%s' in warm state\n", 533 si2168_ops.info.name); 534 warm: 535 s->active = true; 536 537 return 0; 538 539 error_fw_release: 540 release_firmware(fw); 541 err: 542 dev_dbg(&s->client->dev, "failed=%d\n", ret); 543 return ret; 544 } 545 546 static int si2168_sleep(struct dvb_frontend *fe) 547 { 548 struct si2168 *s = fe->demodulator_priv; 549 int ret; 550 struct si2168_cmd cmd; 551 552 dev_dbg(&s->client->dev, "\n"); 553 554 s->active = false; 555 556 memcpy(cmd.args, "\x13", 1); 557 cmd.wlen = 1; 558 cmd.rlen = 0; 559 ret = si2168_cmd_execute(s, &cmd); 560 if (ret) 561 goto err; 562 563 return 0; 564 err: 565 dev_dbg(&s->client->dev, "failed=%d\n", ret); 566 return ret; 567 } 568 569 static int si2168_get_tune_settings(struct dvb_frontend *fe, 570 struct dvb_frontend_tune_settings *s) 571 { 572 s->min_delay_ms = 900; 573 574 return 0; 575 } 576 577 /* 578 * I2C gate logic 579 * We must use unlocked i2c_transfer() here because I2C lock is already taken 580 * by tuner driver. 581 */ 582 static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) 583 { 584 struct si2168 *s = mux_priv; 585 int ret; 586 struct i2c_msg gate_open_msg = { 587 .addr = s->client->addr, 588 .flags = 0, 589 .len = 3, 590 .buf = "\xc0\x0d\x01", 591 }; 592 593 mutex_lock(&s->i2c_mutex); 594 595 /* open tuner I2C gate */ 596 ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1); 597 if (ret != 1) { 598 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret); 599 if (ret >= 0) 600 ret = -EREMOTEIO; 601 } else { 602 ret = 0; 603 } 604 605 return ret; 606 } 607 608 static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) 609 { 610 struct si2168 *s = mux_priv; 611 int ret; 612 struct i2c_msg gate_close_msg = { 613 .addr = s->client->addr, 614 .flags = 0, 615 .len = 3, 616 .buf = "\xc0\x0d\x00", 617 }; 618 619 /* close tuner I2C gate */ 620 ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1); 621 if (ret != 1) { 622 dev_warn(&s->client->dev, "i2c write failed=%d\n", ret); 623 if (ret >= 0) 624 ret = -EREMOTEIO; 625 } else { 626 ret = 0; 627 } 628 629 mutex_unlock(&s->i2c_mutex); 630 631 return ret; 632 } 633 634 static const struct dvb_frontend_ops si2168_ops = { 635 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 636 .info = { 637 .name = "Silicon Labs Si2168", 638 .caps = FE_CAN_FEC_1_2 | 639 FE_CAN_FEC_2_3 | 640 FE_CAN_FEC_3_4 | 641 FE_CAN_FEC_5_6 | 642 FE_CAN_FEC_7_8 | 643 FE_CAN_FEC_AUTO | 644 FE_CAN_QPSK | 645 FE_CAN_QAM_16 | 646 FE_CAN_QAM_32 | 647 FE_CAN_QAM_64 | 648 FE_CAN_QAM_128 | 649 FE_CAN_QAM_256 | 650 FE_CAN_QAM_AUTO | 651 FE_CAN_TRANSMISSION_MODE_AUTO | 652 FE_CAN_GUARD_INTERVAL_AUTO | 653 FE_CAN_HIERARCHY_AUTO | 654 FE_CAN_MUTE_TS | 655 FE_CAN_2G_MODULATION | 656 FE_CAN_MULTISTREAM 657 }, 658 659 .get_tune_settings = si2168_get_tune_settings, 660 661 .init = si2168_init, 662 .sleep = si2168_sleep, 663 664 .set_frontend = si2168_set_frontend, 665 666 .read_status = si2168_read_status, 667 }; 668 669 static int si2168_probe(struct i2c_client *client, 670 const struct i2c_device_id *id) 671 { 672 struct si2168_config *config = client->dev.platform_data; 673 struct si2168 *s; 674 int ret; 675 676 dev_dbg(&client->dev, "\n"); 677 678 s = kzalloc(sizeof(struct si2168), GFP_KERNEL); 679 if (!s) { 680 ret = -ENOMEM; 681 dev_err(&client->dev, "kzalloc() failed\n"); 682 goto err; 683 } 684 685 s->client = client; 686 mutex_init(&s->i2c_mutex); 687 688 /* create mux i2c adapter for tuner */ 689 s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s, 690 0, 0, 0, si2168_select, si2168_deselect); 691 if (s->adapter == NULL) { 692 ret = -ENODEV; 693 goto err; 694 } 695 696 /* create dvb_frontend */ 697 memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 698 s->fe.demodulator_priv = s; 699 700 *config->i2c_adapter = s->adapter; 701 *config->fe = &s->fe; 702 s->ts_mode = config->ts_mode; 703 s->ts_clock_inv = config->ts_clock_inv; 704 s->fw_loaded = false; 705 706 i2c_set_clientdata(client, s); 707 708 dev_info(&s->client->dev, 709 "Silicon Labs Si2168 successfully attached\n"); 710 return 0; 711 err: 712 kfree(s); 713 dev_dbg(&client->dev, "failed=%d\n", ret); 714 return ret; 715 } 716 717 static int si2168_remove(struct i2c_client *client) 718 { 719 struct si2168 *s = i2c_get_clientdata(client); 720 721 dev_dbg(&client->dev, "\n"); 722 723 i2c_del_mux_adapter(s->adapter); 724 725 s->fe.ops.release = NULL; 726 s->fe.demodulator_priv = NULL; 727 728 kfree(s); 729 730 return 0; 731 } 732 733 static const struct i2c_device_id si2168_id[] = { 734 {"si2168", 0}, 735 {} 736 }; 737 MODULE_DEVICE_TABLE(i2c, si2168_id); 738 739 static struct i2c_driver si2168_driver = { 740 .driver = { 741 .owner = THIS_MODULE, 742 .name = "si2168", 743 }, 744 .probe = si2168_probe, 745 .remove = si2168_remove, 746 .id_table = si2168_id, 747 }; 748 749 module_i2c_driver(si2168_driver); 750 751 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 752 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 753 MODULE_LICENSE("GPL"); 754 MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 755 MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 756 MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 757