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