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 19static const struct dvb_frontend_ops si2168_ops; 20 21/* Own I2C adapter locking is needed because of I2C gate logic. */ 22static int si2168_i2c_master_send_unlocked(const struct i2c_client *client, 23 const char *buf, int count) 24{ 25 int ret; 26 struct i2c_msg msg = { 27 .addr = client->addr, 28 .flags = 0, 29 .len = count, 30 .buf = (char *)buf, 31 }; 32 33 ret = __i2c_transfer(client->adapter, &msg, 1); 34 return (ret == 1) ? count : ret; 35} 36 37static int si2168_i2c_master_recv_unlocked(const struct i2c_client *client, 38 char *buf, int count) 39{ 40 int ret; 41 struct i2c_msg msg = { 42 .addr = client->addr, 43 .flags = I2C_M_RD, 44 .len = count, 45 .buf = buf, 46 }; 47 48 ret = __i2c_transfer(client->adapter, &msg, 1); 49 return (ret == 1) ? count : ret; 50} 51 52/* execute firmware command */ 53static int si2168_cmd_execute_unlocked(struct i2c_client *client, 54 struct si2168_cmd *cmd) 55{ 56 int ret; 57 unsigned long timeout; 58 59 if (cmd->wlen) { 60 /* write cmd and args for firmware */ 61 ret = si2168_i2c_master_send_unlocked(client, cmd->args, 62 cmd->wlen); 63 if (ret < 0) { 64 goto err; 65 } else if (ret != cmd->wlen) { 66 ret = -EREMOTEIO; 67 goto err; 68 } 69 } 70 71 if (cmd->rlen) { 72 /* wait cmd execution terminate */ 73 #define TIMEOUT 70 74 timeout = jiffies + msecs_to_jiffies(TIMEOUT); 75 while (!time_after(jiffies, timeout)) { 76 ret = si2168_i2c_master_recv_unlocked(client, cmd->args, 77 cmd->rlen); 78 if (ret < 0) { 79 goto err; 80 } else if (ret != cmd->rlen) { 81 ret = -EREMOTEIO; 82 goto err; 83 } 84 85 /* firmware ready? */ 86 if ((cmd->args[0] >> 7) & 0x01) 87 break; 88 } 89 90 dev_dbg(&client->dev, "cmd execution took %d ms\n", 91 jiffies_to_msecs(jiffies) - 92 (jiffies_to_msecs(timeout) - TIMEOUT)); 93 94 /* error bit set? */ 95 if ((cmd->args[0] >> 6) & 0x01) { 96 ret = -EREMOTEIO; 97 goto err; 98 } 99 100 if (!((cmd->args[0] >> 7) & 0x01)) { 101 ret = -ETIMEDOUT; 102 goto err; 103 } 104 } 105 106 return 0; 107err: 108 dev_dbg(&client->dev, "failed=%d\n", ret); 109 return ret; 110} 111 112static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd) 113{ 114 int ret; 115 116 i2c_lock_adapter(client->adapter); 117 ret = si2168_cmd_execute_unlocked(client, cmd); 118 i2c_unlock_adapter(client->adapter); 119 120 return ret; 121} 122 123static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) 124{ 125 struct i2c_client *client = fe->demodulator_priv; 126 struct si2168_dev *dev = i2c_get_clientdata(client); 127 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 128 int ret; 129 struct si2168_cmd cmd; 130 131 *status = 0; 132 133 if (!dev->active) { 134 ret = -EAGAIN; 135 goto err; 136 } 137 138 switch (c->delivery_system) { 139 case SYS_DVBT: 140 memcpy(cmd.args, "\xa0\x01", 2); 141 cmd.wlen = 2; 142 cmd.rlen = 13; 143 break; 144 case SYS_DVBC_ANNEX_A: 145 memcpy(cmd.args, "\x90\x01", 2); 146 cmd.wlen = 2; 147 cmd.rlen = 9; 148 break; 149 case SYS_DVBT2: 150 memcpy(cmd.args, "\x50\x01", 2); 151 cmd.wlen = 2; 152 cmd.rlen = 14; 153 break; 154 default: 155 ret = -EINVAL; 156 goto err; 157 } 158 159 ret = si2168_cmd_execute(client, &cmd); 160 if (ret) 161 goto err; 162 163 switch ((cmd.args[2] >> 1) & 0x03) { 164 case 0x01: 165 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 166 break; 167 case 0x03: 168 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 169 FE_HAS_SYNC | FE_HAS_LOCK; 170 break; 171 } 172 173 dev->fe_status = *status; 174 175 if (*status & FE_HAS_LOCK) { 176 c->cnr.len = 1; 177 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 178 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 179 } else { 180 c->cnr.len = 1; 181 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 182 } 183 184 dev_dbg(&client->dev, "status=%02x args=%*ph\n", 185 *status, cmd.rlen, cmd.args); 186 187 return 0; 188err: 189 dev_dbg(&client->dev, "failed=%d\n", ret); 190 return ret; 191} 192 193static int si2168_set_frontend(struct dvb_frontend *fe) 194{ 195 struct i2c_client *client = fe->demodulator_priv; 196 struct si2168_dev *dev = i2c_get_clientdata(client); 197 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 198 int ret; 199 struct si2168_cmd cmd; 200 u8 bandwidth, delivery_system; 201 202 dev_dbg(&client->dev, 203 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n", 204 c->delivery_system, c->modulation, c->frequency, 205 c->bandwidth_hz, c->symbol_rate, c->inversion, 206 c->stream_id); 207 208 if (!dev->active) { 209 ret = -EAGAIN; 210 goto err; 211 } 212 213 switch (c->delivery_system) { 214 case SYS_DVBT: 215 delivery_system = 0x20; 216 break; 217 case SYS_DVBC_ANNEX_A: 218 delivery_system = 0x30; 219 break; 220 case SYS_DVBT2: 221 delivery_system = 0x70; 222 break; 223 default: 224 ret = -EINVAL; 225 goto err; 226 } 227 228 if (c->bandwidth_hz == 0) { 229 ret = -EINVAL; 230 goto err; 231 } else if (c->bandwidth_hz <= 2000000) 232 bandwidth = 0x02; 233 else if (c->bandwidth_hz <= 5000000) 234 bandwidth = 0x05; 235 else if (c->bandwidth_hz <= 6000000) 236 bandwidth = 0x06; 237 else if (c->bandwidth_hz <= 7000000) 238 bandwidth = 0x07; 239 else if (c->bandwidth_hz <= 8000000) 240 bandwidth = 0x08; 241 else if (c->bandwidth_hz <= 9000000) 242 bandwidth = 0x09; 243 else if (c->bandwidth_hz <= 10000000) 244 bandwidth = 0x0a; 245 else 246 bandwidth = 0x0f; 247 248 /* program tuner */ 249 if (fe->ops.tuner_ops.set_params) { 250 ret = fe->ops.tuner_ops.set_params(fe); 251 if (ret) 252 goto err; 253 } 254 255 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 256 cmd.wlen = 5; 257 cmd.rlen = 5; 258 ret = si2168_cmd_execute(client, &cmd); 259 if (ret) 260 goto err; 261 262 /* that has no big effect */ 263 if (c->delivery_system == SYS_DVBT) 264 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 265 else if (c->delivery_system == SYS_DVBC_ANNEX_A) 266 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 267 else if (c->delivery_system == SYS_DVBT2) 268 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 269 cmd.wlen = 6; 270 cmd.rlen = 3; 271 ret = si2168_cmd_execute(client, &cmd); 272 if (ret) 273 goto err; 274 275 if (c->delivery_system == SYS_DVBT2) { 276 /* select PLP */ 277 cmd.args[0] = 0x52; 278 cmd.args[1] = c->stream_id & 0xff; 279 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 280 cmd.wlen = 3; 281 cmd.rlen = 1; 282 ret = si2168_cmd_execute(client, &cmd); 283 if (ret) 284 goto err; 285 } 286 287 memcpy(cmd.args, "\x51\x03", 2); 288 cmd.wlen = 2; 289 cmd.rlen = 12; 290 ret = si2168_cmd_execute(client, &cmd); 291 if (ret) 292 goto err; 293 294 memcpy(cmd.args, "\x12\x08\x04", 3); 295 cmd.wlen = 3; 296 cmd.rlen = 3; 297 ret = si2168_cmd_execute(client, &cmd); 298 if (ret) 299 goto err; 300 301 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 302 cmd.wlen = 6; 303 cmd.rlen = 4; 304 ret = si2168_cmd_execute(client, &cmd); 305 if (ret) 306 goto err; 307 308 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 309 cmd.wlen = 6; 310 cmd.rlen = 4; 311 ret = si2168_cmd_execute(client, &cmd); 312 if (ret) 313 goto err; 314 315 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 316 cmd.wlen = 6; 317 cmd.rlen = 4; 318 ret = si2168_cmd_execute(client, &cmd); 319 if (ret) 320 goto err; 321 322 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 323 cmd.args[4] = delivery_system | bandwidth; 324 cmd.wlen = 6; 325 cmd.rlen = 4; 326 ret = si2168_cmd_execute(client, &cmd); 327 if (ret) 328 goto err; 329 330 /* set DVB-C symbol rate */ 331 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 332 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 333 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; 334 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 335 cmd.wlen = 6; 336 cmd.rlen = 4; 337 ret = si2168_cmd_execute(client, &cmd); 338 if (ret) 339 goto err; 340 } 341 342 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 343 cmd.wlen = 6; 344 cmd.rlen = 4; 345 ret = si2168_cmd_execute(client, &cmd); 346 if (ret) 347 goto err; 348 349 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6); 350 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 351 cmd.wlen = 6; 352 cmd.rlen = 4; 353 ret = si2168_cmd_execute(client, &cmd); 354 if (ret) 355 goto err; 356 357 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 358 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 359 cmd.wlen = 6; 360 cmd.rlen = 4; 361 ret = si2168_cmd_execute(client, &cmd); 362 if (ret) 363 goto err; 364 365 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 366 cmd.wlen = 6; 367 cmd.rlen = 4; 368 ret = si2168_cmd_execute(client, &cmd); 369 if (ret) 370 goto err; 371 372 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 373 cmd.wlen = 6; 374 cmd.rlen = 4; 375 ret = si2168_cmd_execute(client, &cmd); 376 if (ret) 377 goto err; 378 379 memcpy(cmd.args, "\x85", 1); 380 cmd.wlen = 1; 381 cmd.rlen = 1; 382 ret = si2168_cmd_execute(client, &cmd); 383 if (ret) 384 goto err; 385 386 dev->delivery_system = c->delivery_system; 387 388 return 0; 389err: 390 dev_dbg(&client->dev, "failed=%d\n", ret); 391 return ret; 392} 393 394static int si2168_init(struct dvb_frontend *fe) 395{ 396 struct i2c_client *client = fe->demodulator_priv; 397 struct si2168_dev *dev = i2c_get_clientdata(client); 398 int ret, len, remaining; 399 const struct firmware *fw; 400 const char *fw_name; 401 struct si2168_cmd cmd; 402 unsigned int chip_id; 403 404 dev_dbg(&client->dev, "\n"); 405 406 /* initialize */ 407 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 408 cmd.wlen = 13; 409 cmd.rlen = 0; 410 ret = si2168_cmd_execute(client, &cmd); 411 if (ret) 412 goto err; 413 414 if (dev->fw_loaded) { 415 /* resume */ 416 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 417 cmd.wlen = 8; 418 cmd.rlen = 1; 419 ret = si2168_cmd_execute(client, &cmd); 420 if (ret) 421 goto err; 422 423 memcpy(cmd.args, "\x85", 1); 424 cmd.wlen = 1; 425 cmd.rlen = 1; 426 ret = si2168_cmd_execute(client, &cmd); 427 if (ret) 428 goto err; 429 430 goto warm; 431 } 432 433 /* power up */ 434 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 435 cmd.wlen = 8; 436 cmd.rlen = 1; 437 ret = si2168_cmd_execute(client, &cmd); 438 if (ret) 439 goto err; 440 441 /* query chip revision */ 442 memcpy(cmd.args, "\x02", 1); 443 cmd.wlen = 1; 444 cmd.rlen = 13; 445 ret = si2168_cmd_execute(client, &cmd); 446 if (ret) 447 goto err; 448 449 chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 | 450 cmd.args[4] << 0; 451 452 #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0) 453 #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0) 454 #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0) 455 456 switch (chip_id) { 457 case SI2168_A20: 458 fw_name = SI2168_A20_FIRMWARE; 459 break; 460 case SI2168_A30: 461 fw_name = SI2168_A30_FIRMWARE; 462 break; 463 case SI2168_B40: 464 fw_name = SI2168_B40_FIRMWARE; 465 break; 466 default: 467 dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n", 468 cmd.args[2], cmd.args[1], 469 cmd.args[3], cmd.args[4]); 470 ret = -EINVAL; 471 goto err; 472 } 473 474 dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n", 475 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); 476 477 /* request the firmware, this will block and timeout */ 478 ret = request_firmware(&fw, fw_name, &client->dev); 479 if (ret) { 480 /* fallback mechanism to handle old name for Si2168 B40 fw */ 481 if (chip_id == SI2168_B40) { 482 fw_name = SI2168_B40_FIRMWARE_FALLBACK; 483 ret = request_firmware(&fw, fw_name, &client->dev); 484 } 485 486 if (ret == 0) { 487 dev_notice(&client->dev, 488 "please install firmware file '%s'\n", 489 SI2168_B40_FIRMWARE); 490 } else { 491 dev_err(&client->dev, 492 "firmware file '%s' not found\n", 493 fw_name); 494 goto err_release_firmware; 495 } 496 } 497 498 dev_info(&client->dev, "downloading firmware from file '%s'\n", 499 fw_name); 500 501 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 502 /* firmware is in the new format */ 503 for (remaining = fw->size; remaining > 0; remaining -= 17) { 504 len = fw->data[fw->size - remaining]; 505 if (len > SI2168_ARGLEN) { 506 ret = -EINVAL; 507 break; 508 } 509 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 510 cmd.wlen = len; 511 cmd.rlen = 1; 512 ret = si2168_cmd_execute(client, &cmd); 513 if (ret) 514 break; 515 } 516 } else if (fw->size % 8 == 0) { 517 /* firmware is in the old format */ 518 for (remaining = fw->size; remaining > 0; remaining -= 8) { 519 len = 8; 520 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 521 cmd.wlen = len; 522 cmd.rlen = 1; 523 ret = si2168_cmd_execute(client, &cmd); 524 if (ret) 525 break; 526 } 527 } else { 528 /* bad or unknown firmware format */ 529 ret = -EINVAL; 530 } 531 532 if (ret) { 533 dev_err(&client->dev, "firmware download failed %d\n", ret); 534 goto err_release_firmware; 535 } 536 537 release_firmware(fw); 538 539 memcpy(cmd.args, "\x01\x01", 2); 540 cmd.wlen = 2; 541 cmd.rlen = 1; 542 ret = si2168_cmd_execute(client, &cmd); 543 if (ret) 544 goto err; 545 546 /* query firmware version */ 547 memcpy(cmd.args, "\x11", 1); 548 cmd.wlen = 1; 549 cmd.rlen = 10; 550 ret = si2168_cmd_execute(client, &cmd); 551 if (ret) 552 goto err; 553 554 dev_info(&client->dev, "firmware version: %c.%c.%d\n", 555 cmd.args[6], cmd.args[7], cmd.args[8]); 556 557 /* set ts mode */ 558 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 559 cmd.args[4] |= dev->ts_mode; 560 if (dev->ts_clock_gapped) 561 cmd.args[4] |= 0x40; 562 cmd.wlen = 6; 563 cmd.rlen = 4; 564 ret = si2168_cmd_execute(client, &cmd); 565 if (ret) 566 goto err; 567 568 dev->fw_loaded = true; 569warm: 570 dev->active = true; 571 572 return 0; 573 574err_release_firmware: 575 release_firmware(fw); 576err: 577 dev_dbg(&client->dev, "failed=%d\n", ret); 578 return ret; 579} 580 581static int si2168_sleep(struct dvb_frontend *fe) 582{ 583 struct i2c_client *client = fe->demodulator_priv; 584 struct si2168_dev *dev = i2c_get_clientdata(client); 585 int ret; 586 struct si2168_cmd cmd; 587 588 dev_dbg(&client->dev, "\n"); 589 590 dev->active = false; 591 592 memcpy(cmd.args, "\x13", 1); 593 cmd.wlen = 1; 594 cmd.rlen = 0; 595 ret = si2168_cmd_execute(client, &cmd); 596 if (ret) 597 goto err; 598 599 return 0; 600err: 601 dev_dbg(&client->dev, "failed=%d\n", ret); 602 return ret; 603} 604 605static int si2168_get_tune_settings(struct dvb_frontend *fe, 606 struct dvb_frontend_tune_settings *s) 607{ 608 s->min_delay_ms = 900; 609 610 return 0; 611} 612 613/* 614 * I2C gate logic 615 * We must use unlocked I2C I/O because I2C adapter lock is already taken 616 * by the caller (usually tuner driver). 617 */ 618static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) 619{ 620 struct i2c_client *client = mux_priv; 621 int ret; 622 struct si2168_cmd cmd; 623 624 /* open I2C gate */ 625 memcpy(cmd.args, "\xc0\x0d\x01", 3); 626 cmd.wlen = 3; 627 cmd.rlen = 0; 628 ret = si2168_cmd_execute_unlocked(client, &cmd); 629 if (ret) 630 goto err; 631 632 return 0; 633err: 634 dev_dbg(&client->dev, "failed=%d\n", ret); 635 return ret; 636} 637 638static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) 639{ 640 struct i2c_client *client = mux_priv; 641 int ret; 642 struct si2168_cmd cmd; 643 644 /* close I2C gate */ 645 memcpy(cmd.args, "\xc0\x0d\x00", 3); 646 cmd.wlen = 3; 647 cmd.rlen = 0; 648 ret = si2168_cmd_execute_unlocked(client, &cmd); 649 if (ret) 650 goto err; 651 652 return 0; 653err: 654 dev_dbg(&client->dev, "failed=%d\n", ret); 655 return ret; 656} 657 658static const struct dvb_frontend_ops si2168_ops = { 659 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 660 .info = { 661 .name = "Silicon Labs Si2168", 662 .symbol_rate_min = 1000000, 663 .symbol_rate_max = 7200000, 664 .caps = FE_CAN_FEC_1_2 | 665 FE_CAN_FEC_2_3 | 666 FE_CAN_FEC_3_4 | 667 FE_CAN_FEC_5_6 | 668 FE_CAN_FEC_7_8 | 669 FE_CAN_FEC_AUTO | 670 FE_CAN_QPSK | 671 FE_CAN_QAM_16 | 672 FE_CAN_QAM_32 | 673 FE_CAN_QAM_64 | 674 FE_CAN_QAM_128 | 675 FE_CAN_QAM_256 | 676 FE_CAN_QAM_AUTO | 677 FE_CAN_TRANSMISSION_MODE_AUTO | 678 FE_CAN_GUARD_INTERVAL_AUTO | 679 FE_CAN_HIERARCHY_AUTO | 680 FE_CAN_MUTE_TS | 681 FE_CAN_2G_MODULATION | 682 FE_CAN_MULTISTREAM 683 }, 684 685 .get_tune_settings = si2168_get_tune_settings, 686 687 .init = si2168_init, 688 .sleep = si2168_sleep, 689 690 .set_frontend = si2168_set_frontend, 691 692 .read_status = si2168_read_status, 693}; 694 695static int si2168_probe(struct i2c_client *client, 696 const struct i2c_device_id *id) 697{ 698 struct si2168_config *config = client->dev.platform_data; 699 struct si2168_dev *dev; 700 int ret; 701 702 dev_dbg(&client->dev, "\n"); 703 704 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 705 if (!dev) { 706 ret = -ENOMEM; 707 dev_err(&client->dev, "kzalloc() failed\n"); 708 goto err; 709 } 710 711 /* create mux i2c adapter for tuner */ 712 dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, 713 client, 0, 0, 0, si2168_select, si2168_deselect); 714 if (dev->adapter == NULL) { 715 ret = -ENODEV; 716 goto err_kfree; 717 } 718 719 /* create dvb_frontend */ 720 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 721 dev->fe.demodulator_priv = client; 722 *config->i2c_adapter = dev->adapter; 723 *config->fe = &dev->fe; 724 dev->ts_mode = config->ts_mode; 725 dev->ts_clock_inv = config->ts_clock_inv; 726 dev->ts_clock_gapped = config->ts_clock_gapped; 727 dev->fw_loaded = false; 728 729 i2c_set_clientdata(client, dev); 730 731 dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n"); 732 return 0; 733err_kfree: 734 kfree(dev); 735err: 736 dev_dbg(&client->dev, "failed=%d\n", ret); 737 return ret; 738} 739 740static int si2168_remove(struct i2c_client *client) 741{ 742 struct si2168_dev *dev = i2c_get_clientdata(client); 743 744 dev_dbg(&client->dev, "\n"); 745 746 i2c_del_mux_adapter(dev->adapter); 747 748 dev->fe.ops.release = NULL; 749 dev->fe.demodulator_priv = NULL; 750 751 kfree(dev); 752 753 return 0; 754} 755 756static const struct i2c_device_id si2168_id_table[] = { 757 {"si2168", 0}, 758 {} 759}; 760MODULE_DEVICE_TABLE(i2c, si2168_id_table); 761 762static struct i2c_driver si2168_driver = { 763 .driver = { 764 .name = "si2168", 765 }, 766 .probe = si2168_probe, 767 .remove = si2168_remove, 768 .id_table = si2168_id_table, 769}; 770 771module_i2c_driver(si2168_driver); 772 773MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 774MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 775MODULE_LICENSE("GPL"); 776MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 777MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 778MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 779