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 /* execute firmware command */ 24 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd) 25 { 26 struct si2168_dev *dev = i2c_get_clientdata(client); 27 int ret; 28 unsigned long timeout; 29 30 mutex_lock(&dev->i2c_mutex); 31 32 if (cmd->wlen) { 33 /* write cmd and args for firmware */ 34 ret = i2c_master_send(client, cmd->args, cmd->wlen); 35 if (ret < 0) { 36 goto err_mutex_unlock; 37 } else if (ret != cmd->wlen) { 38 ret = -EREMOTEIO; 39 goto err_mutex_unlock; 40 } 41 } 42 43 if (cmd->rlen) { 44 /* wait cmd execution terminate */ 45 #define TIMEOUT 70 46 timeout = jiffies + msecs_to_jiffies(TIMEOUT); 47 while (!time_after(jiffies, timeout)) { 48 ret = i2c_master_recv(client, cmd->args, cmd->rlen); 49 if (ret < 0) { 50 goto err_mutex_unlock; 51 } else if (ret != cmd->rlen) { 52 ret = -EREMOTEIO; 53 goto err_mutex_unlock; 54 } 55 56 /* firmware ready? */ 57 if ((cmd->args[0] >> 7) & 0x01) 58 break; 59 } 60 61 dev_dbg(&client->dev, "cmd execution took %d ms\n", 62 jiffies_to_msecs(jiffies) - 63 (jiffies_to_msecs(timeout) - TIMEOUT)); 64 65 /* error bit set? */ 66 if ((cmd->args[0] >> 6) & 0x01) { 67 ret = -EREMOTEIO; 68 goto err_mutex_unlock; 69 } 70 71 if (!((cmd->args[0] >> 7) & 0x01)) { 72 ret = -ETIMEDOUT; 73 goto err_mutex_unlock; 74 } 75 } 76 77 mutex_unlock(&dev->i2c_mutex); 78 return 0; 79 err_mutex_unlock: 80 mutex_unlock(&dev->i2c_mutex); 81 dev_dbg(&client->dev, "failed=%d\n", ret); 82 return ret; 83 } 84 85 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) 86 { 87 struct i2c_client *client = fe->demodulator_priv; 88 struct si2168_dev *dev = i2c_get_clientdata(client); 89 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 90 int ret, i; 91 unsigned int utmp, utmp1, utmp2; 92 struct si2168_cmd cmd; 93 94 *status = 0; 95 96 if (!dev->active) { 97 ret = -EAGAIN; 98 goto err; 99 } 100 101 switch (c->delivery_system) { 102 case SYS_DVBT: 103 memcpy(cmd.args, "\xa0\x01", 2); 104 cmd.wlen = 2; 105 cmd.rlen = 13; 106 break; 107 case SYS_DVBC_ANNEX_A: 108 memcpy(cmd.args, "\x90\x01", 2); 109 cmd.wlen = 2; 110 cmd.rlen = 9; 111 break; 112 case SYS_DVBT2: 113 memcpy(cmd.args, "\x50\x01", 2); 114 cmd.wlen = 2; 115 cmd.rlen = 14; 116 break; 117 default: 118 ret = -EINVAL; 119 goto err; 120 } 121 122 ret = si2168_cmd_execute(client, &cmd); 123 if (ret) 124 goto err; 125 126 switch ((cmd.args[2] >> 1) & 0x03) { 127 case 0x01: 128 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 129 break; 130 case 0x03: 131 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 132 FE_HAS_SYNC | FE_HAS_LOCK; 133 break; 134 } 135 136 dev->fe_status = *status; 137 138 if (*status & FE_HAS_LOCK) { 139 c->cnr.len = 1; 140 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 141 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 142 } else { 143 c->cnr.len = 1; 144 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 145 } 146 147 dev_dbg(&client->dev, "status=%02x args=%*ph\n", 148 *status, cmd.rlen, cmd.args); 149 150 /* BER */ 151 if (*status & FE_HAS_VITERBI) { 152 memcpy(cmd.args, "\x82\x00", 2); 153 cmd.wlen = 2; 154 cmd.rlen = 3; 155 ret = si2168_cmd_execute(client, &cmd); 156 if (ret) 157 goto err; 158 159 /* 160 * Firmware returns [0, 255] mantissa and [0, 8] exponent. 161 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8 162 */ 163 utmp = clamp(8 - cmd.args[1], 0, 8); 164 for (i = 0, utmp1 = 1; i < utmp; i++) 165 utmp1 = utmp1 * 10; 166 167 utmp1 = cmd.args[2] * utmp1; 168 utmp2 = 100000000; /* 10^8 */ 169 170 dev_dbg(&client->dev, 171 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n", 172 utmp1, utmp2, cmd.args[2], cmd.args[1]); 173 174 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 175 c->post_bit_error.stat[0].uvalue += utmp1; 176 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 177 c->post_bit_count.stat[0].uvalue += utmp2; 178 } else { 179 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 180 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 181 } 182 183 /* UCB */ 184 if (*status & FE_HAS_SYNC) { 185 memcpy(cmd.args, "\x84\x01", 2); 186 cmd.wlen = 2; 187 cmd.rlen = 3; 188 ret = si2168_cmd_execute(client, &cmd); 189 if (ret) 190 goto err; 191 192 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0; 193 dev_dbg(&client->dev, "block_error=%u\n", utmp1); 194 195 /* Sometimes firmware returns bogus value */ 196 if (utmp1 == 0xffff) 197 utmp1 = 0; 198 199 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 200 c->block_error.stat[0].uvalue += utmp1; 201 } else { 202 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 203 } 204 205 return 0; 206 err: 207 dev_dbg(&client->dev, "failed=%d\n", ret); 208 return ret; 209 } 210 211 static int si2168_set_frontend(struct dvb_frontend *fe) 212 { 213 struct i2c_client *client = fe->demodulator_priv; 214 struct si2168_dev *dev = i2c_get_clientdata(client); 215 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 216 int ret; 217 struct si2168_cmd cmd; 218 u8 bandwidth, delivery_system; 219 220 dev_dbg(&client->dev, 221 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n", 222 c->delivery_system, c->modulation, c->frequency, 223 c->bandwidth_hz, c->symbol_rate, c->inversion, 224 c->stream_id); 225 226 if (!dev->active) { 227 ret = -EAGAIN; 228 goto err; 229 } 230 231 switch (c->delivery_system) { 232 case SYS_DVBT: 233 delivery_system = 0x20; 234 break; 235 case SYS_DVBC_ANNEX_A: 236 delivery_system = 0x30; 237 break; 238 case SYS_DVBT2: 239 delivery_system = 0x70; 240 break; 241 default: 242 ret = -EINVAL; 243 goto err; 244 } 245 246 if (c->bandwidth_hz == 0) { 247 ret = -EINVAL; 248 goto err; 249 } else if (c->bandwidth_hz <= 2000000) 250 bandwidth = 0x02; 251 else if (c->bandwidth_hz <= 5000000) 252 bandwidth = 0x05; 253 else if (c->bandwidth_hz <= 6000000) 254 bandwidth = 0x06; 255 else if (c->bandwidth_hz <= 7000000) 256 bandwidth = 0x07; 257 else if (c->bandwidth_hz <= 8000000) 258 bandwidth = 0x08; 259 else if (c->bandwidth_hz <= 9000000) 260 bandwidth = 0x09; 261 else if (c->bandwidth_hz <= 10000000) 262 bandwidth = 0x0a; 263 else 264 bandwidth = 0x0f; 265 266 /* program tuner */ 267 if (fe->ops.tuner_ops.set_params) { 268 ret = fe->ops.tuner_ops.set_params(fe); 269 if (ret) 270 goto err; 271 } 272 273 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 274 cmd.wlen = 5; 275 cmd.rlen = 5; 276 ret = si2168_cmd_execute(client, &cmd); 277 if (ret) 278 goto err; 279 280 /* that has no big effect */ 281 if (c->delivery_system == SYS_DVBT) 282 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 283 else if (c->delivery_system == SYS_DVBC_ANNEX_A) 284 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 285 else if (c->delivery_system == SYS_DVBT2) 286 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 287 cmd.wlen = 6; 288 cmd.rlen = 3; 289 ret = si2168_cmd_execute(client, &cmd); 290 if (ret) 291 goto err; 292 293 if (c->delivery_system == SYS_DVBT2) { 294 /* select PLP */ 295 cmd.args[0] = 0x52; 296 cmd.args[1] = c->stream_id & 0xff; 297 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 298 cmd.wlen = 3; 299 cmd.rlen = 1; 300 ret = si2168_cmd_execute(client, &cmd); 301 if (ret) 302 goto err; 303 } 304 305 memcpy(cmd.args, "\x51\x03", 2); 306 cmd.wlen = 2; 307 cmd.rlen = 12; 308 ret = si2168_cmd_execute(client, &cmd); 309 if (ret) 310 goto err; 311 312 memcpy(cmd.args, "\x12\x08\x04", 3); 313 cmd.wlen = 3; 314 cmd.rlen = 3; 315 ret = si2168_cmd_execute(client, &cmd); 316 if (ret) 317 goto err; 318 319 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 320 cmd.wlen = 6; 321 cmd.rlen = 4; 322 ret = si2168_cmd_execute(client, &cmd); 323 if (ret) 324 goto err; 325 326 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 327 cmd.wlen = 6; 328 cmd.rlen = 4; 329 ret = si2168_cmd_execute(client, &cmd); 330 if (ret) 331 goto err; 332 333 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 334 cmd.wlen = 6; 335 cmd.rlen = 4; 336 ret = si2168_cmd_execute(client, &cmd); 337 if (ret) 338 goto err; 339 340 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 341 cmd.args[4] = delivery_system | bandwidth; 342 cmd.wlen = 6; 343 cmd.rlen = 4; 344 ret = si2168_cmd_execute(client, &cmd); 345 if (ret) 346 goto err; 347 348 /* set DVB-C symbol rate */ 349 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 350 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 351 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; 352 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 353 cmd.wlen = 6; 354 cmd.rlen = 4; 355 ret = si2168_cmd_execute(client, &cmd); 356 if (ret) 357 goto err; 358 } 359 360 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 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\x09\x10\xe3\x08", 6); 368 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 369 cmd.wlen = 6; 370 cmd.rlen = 4; 371 ret = si2168_cmd_execute(client, &cmd); 372 if (ret) 373 goto err; 374 375 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 376 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 377 cmd.wlen = 6; 378 cmd.rlen = 4; 379 ret = si2168_cmd_execute(client, &cmd); 380 if (ret) 381 goto err; 382 383 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 384 cmd.wlen = 6; 385 cmd.rlen = 4; 386 ret = si2168_cmd_execute(client, &cmd); 387 if (ret) 388 goto err; 389 390 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 391 cmd.wlen = 6; 392 cmd.rlen = 4; 393 ret = si2168_cmd_execute(client, &cmd); 394 if (ret) 395 goto err; 396 397 memcpy(cmd.args, "\x85", 1); 398 cmd.wlen = 1; 399 cmd.rlen = 1; 400 ret = si2168_cmd_execute(client, &cmd); 401 if (ret) 402 goto err; 403 404 dev->delivery_system = c->delivery_system; 405 406 return 0; 407 err: 408 dev_dbg(&client->dev, "failed=%d\n", ret); 409 return ret; 410 } 411 412 static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) 413 { 414 struct i2c_client *client = fe->demodulator_priv; 415 struct si2168_dev *dev = i2c_get_clientdata(client); 416 struct si2168_cmd cmd; 417 int ret = 0; 418 419 dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire); 420 421 /* set TS_MODE property */ 422 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 423 if (acquire) 424 cmd.args[4] |= dev->ts_mode; 425 else 426 cmd.args[4] |= SI2168_TS_TRISTATE; 427 if (dev->ts_clock_gapped) 428 cmd.args[4] |= 0x40; 429 cmd.wlen = 6; 430 cmd.rlen = 4; 431 ret = si2168_cmd_execute(client, &cmd); 432 433 return ret; 434 } 435 436 static int si2168_init(struct dvb_frontend *fe) 437 { 438 struct i2c_client *client = fe->demodulator_priv; 439 struct si2168_dev *dev = i2c_get_clientdata(client); 440 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 441 int ret, len, remaining; 442 const struct firmware *fw; 443 struct si2168_cmd cmd; 444 445 dev_dbg(&client->dev, "\n"); 446 447 /* initialize */ 448 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 449 cmd.wlen = 13; 450 cmd.rlen = 0; 451 ret = si2168_cmd_execute(client, &cmd); 452 if (ret) 453 goto err; 454 455 if (dev->warm) { 456 /* resume */ 457 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 458 cmd.wlen = 8; 459 cmd.rlen = 1; 460 ret = si2168_cmd_execute(client, &cmd); 461 if (ret) 462 goto err; 463 464 udelay(100); 465 memcpy(cmd.args, "\x85", 1); 466 cmd.wlen = 1; 467 cmd.rlen = 1; 468 ret = si2168_cmd_execute(client, &cmd); 469 if (ret) 470 goto err; 471 472 goto warm; 473 } 474 475 /* power up */ 476 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 477 cmd.wlen = 8; 478 cmd.rlen = 1; 479 ret = si2168_cmd_execute(client, &cmd); 480 if (ret) 481 goto err; 482 483 /* request the firmware, this will block and timeout */ 484 ret = request_firmware(&fw, dev->firmware_name, &client->dev); 485 if (ret) { 486 /* fallback mechanism to handle old name for Si2168 B40 fw */ 487 if (dev->chip_id == SI2168_CHIP_ID_B40) { 488 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK; 489 ret = request_firmware(&fw, dev->firmware_name, 490 &client->dev); 491 } 492 493 if (ret == 0) { 494 dev_notice(&client->dev, 495 "please install firmware file '%s'\n", 496 SI2168_B40_FIRMWARE); 497 } else { 498 dev_err(&client->dev, 499 "firmware file '%s' not found\n", 500 dev->firmware_name); 501 goto err_release_firmware; 502 } 503 } 504 505 dev_info(&client->dev, "downloading firmware from file '%s'\n", 506 dev->firmware_name); 507 508 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 509 /* firmware is in the new format */ 510 for (remaining = fw->size; remaining > 0; remaining -= 17) { 511 len = fw->data[fw->size - remaining]; 512 if (len > SI2168_ARGLEN) { 513 ret = -EINVAL; 514 break; 515 } 516 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 517 cmd.wlen = len; 518 cmd.rlen = 1; 519 ret = si2168_cmd_execute(client, &cmd); 520 if (ret) 521 break; 522 } 523 } else if (fw->size % 8 == 0) { 524 /* firmware is in the old format */ 525 for (remaining = fw->size; remaining > 0; remaining -= 8) { 526 len = 8; 527 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 528 cmd.wlen = len; 529 cmd.rlen = 1; 530 ret = si2168_cmd_execute(client, &cmd); 531 if (ret) 532 break; 533 } 534 } else { 535 /* bad or unknown firmware format */ 536 ret = -EINVAL; 537 } 538 539 if (ret) { 540 dev_err(&client->dev, "firmware download failed %d\n", ret); 541 goto err_release_firmware; 542 } 543 544 release_firmware(fw); 545 546 memcpy(cmd.args, "\x01\x01", 2); 547 cmd.wlen = 2; 548 cmd.rlen = 1; 549 ret = si2168_cmd_execute(client, &cmd); 550 if (ret) 551 goto err; 552 553 /* query firmware version */ 554 memcpy(cmd.args, "\x11", 1); 555 cmd.wlen = 1; 556 cmd.rlen = 10; 557 ret = si2168_cmd_execute(client, &cmd); 558 if (ret) 559 goto err; 560 561 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | 562 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; 563 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 564 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 565 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 566 567 ret = si2168_ts_bus_ctrl(fe, 1); 568 if (ret) 569 goto err; 570 571 dev->warm = true; 572 warm: 573 /* Init stats here to indicate which stats are supported */ 574 c->cnr.len = 1; 575 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 576 c->post_bit_error.len = 1; 577 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 578 c->post_bit_count.len = 1; 579 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 580 c->block_error.len = 1; 581 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 582 583 dev->active = true; 584 585 return 0; 586 err_release_firmware: 587 release_firmware(fw); 588 err: 589 dev_dbg(&client->dev, "failed=%d\n", ret); 590 return ret; 591 } 592 593 static int si2168_sleep(struct dvb_frontend *fe) 594 { 595 struct i2c_client *client = fe->demodulator_priv; 596 struct si2168_dev *dev = i2c_get_clientdata(client); 597 int ret; 598 struct si2168_cmd cmd; 599 600 dev_dbg(&client->dev, "\n"); 601 602 dev->active = false; 603 604 /* tri-state data bus */ 605 si2168_ts_bus_ctrl(fe, 0); 606 607 /* Firmware B 4.0-11 or later loses warm state during sleep */ 608 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) 609 dev->warm = false; 610 611 memcpy(cmd.args, "\x13", 1); 612 cmd.wlen = 1; 613 cmd.rlen = 0; 614 ret = si2168_cmd_execute(client, &cmd); 615 if (ret) 616 goto err; 617 618 return 0; 619 err: 620 dev_dbg(&client->dev, "failed=%d\n", ret); 621 return ret; 622 } 623 624 static int si2168_get_tune_settings(struct dvb_frontend *fe, 625 struct dvb_frontend_tune_settings *s) 626 { 627 s->min_delay_ms = 900; 628 629 return 0; 630 } 631 632 static int si2168_select(struct i2c_mux_core *muxc, u32 chan) 633 { 634 struct i2c_client *client = i2c_mux_priv(muxc); 635 int ret; 636 struct si2168_cmd cmd; 637 638 /* open I2C gate */ 639 memcpy(cmd.args, "\xc0\x0d\x01", 3); 640 cmd.wlen = 3; 641 cmd.rlen = 0; 642 ret = si2168_cmd_execute(client, &cmd); 643 if (ret) 644 goto err; 645 646 return 0; 647 err: 648 dev_dbg(&client->dev, "failed=%d\n", ret); 649 return ret; 650 } 651 652 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan) 653 { 654 struct i2c_client *client = i2c_mux_priv(muxc); 655 int ret; 656 struct si2168_cmd cmd; 657 658 /* close I2C gate */ 659 memcpy(cmd.args, "\xc0\x0d\x00", 3); 660 cmd.wlen = 3; 661 cmd.rlen = 0; 662 ret = si2168_cmd_execute(client, &cmd); 663 if (ret) 664 goto err; 665 666 return 0; 667 err: 668 dev_dbg(&client->dev, "failed=%d\n", ret); 669 return ret; 670 } 671 672 static const struct dvb_frontend_ops si2168_ops = { 673 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 674 .info = { 675 .name = "Silicon Labs Si2168", 676 .symbol_rate_min = 1000000, 677 .symbol_rate_max = 7200000, 678 .caps = FE_CAN_FEC_1_2 | 679 FE_CAN_FEC_2_3 | 680 FE_CAN_FEC_3_4 | 681 FE_CAN_FEC_5_6 | 682 FE_CAN_FEC_7_8 | 683 FE_CAN_FEC_AUTO | 684 FE_CAN_QPSK | 685 FE_CAN_QAM_16 | 686 FE_CAN_QAM_32 | 687 FE_CAN_QAM_64 | 688 FE_CAN_QAM_128 | 689 FE_CAN_QAM_256 | 690 FE_CAN_QAM_AUTO | 691 FE_CAN_TRANSMISSION_MODE_AUTO | 692 FE_CAN_GUARD_INTERVAL_AUTO | 693 FE_CAN_HIERARCHY_AUTO | 694 FE_CAN_MUTE_TS | 695 FE_CAN_2G_MODULATION | 696 FE_CAN_MULTISTREAM 697 }, 698 699 .get_tune_settings = si2168_get_tune_settings, 700 701 .init = si2168_init, 702 .sleep = si2168_sleep, 703 704 .ts_bus_ctrl = si2168_ts_bus_ctrl, 705 706 .set_frontend = si2168_set_frontend, 707 708 .read_status = si2168_read_status, 709 }; 710 711 static int si2168_probe(struct i2c_client *client, 712 const struct i2c_device_id *id) 713 { 714 struct si2168_config *config = client->dev.platform_data; 715 struct si2168_dev *dev; 716 int ret; 717 struct si2168_cmd cmd; 718 719 dev_dbg(&client->dev, "\n"); 720 721 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 722 if (!dev) { 723 ret = -ENOMEM; 724 goto err; 725 } 726 727 i2c_set_clientdata(client, dev); 728 mutex_init(&dev->i2c_mutex); 729 730 /* Initialize */ 731 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 732 cmd.wlen = 13; 733 cmd.rlen = 0; 734 ret = si2168_cmd_execute(client, &cmd); 735 if (ret) 736 goto err_kfree; 737 738 /* Power up */ 739 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 740 cmd.wlen = 8; 741 cmd.rlen = 1; 742 ret = si2168_cmd_execute(client, &cmd); 743 if (ret) 744 goto err_kfree; 745 746 /* Query chip revision */ 747 memcpy(cmd.args, "\x02", 1); 748 cmd.wlen = 1; 749 cmd.rlen = 13; 750 ret = si2168_cmd_execute(client, &cmd); 751 if (ret) 752 goto err_kfree; 753 754 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | 755 cmd.args[3] << 8 | cmd.args[4] << 0; 756 757 switch (dev->chip_id) { 758 case SI2168_CHIP_ID_A20: 759 dev->firmware_name = SI2168_A20_FIRMWARE; 760 break; 761 case SI2168_CHIP_ID_A30: 762 dev->firmware_name = SI2168_A30_FIRMWARE; 763 break; 764 case SI2168_CHIP_ID_B40: 765 dev->firmware_name = SI2168_B40_FIRMWARE; 766 break; 767 case SI2168_CHIP_ID_D60: 768 dev->firmware_name = SI2168_D60_FIRMWARE; 769 break; 770 default: 771 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n", 772 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); 773 ret = -ENODEV; 774 goto err_kfree; 775 } 776 777 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 | 778 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0; 779 780 /* create mux i2c adapter for tuner */ 781 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 782 1, 0, I2C_MUX_LOCKED, 783 si2168_select, si2168_deselect); 784 if (!dev->muxc) { 785 ret = -ENOMEM; 786 goto err_kfree; 787 } 788 dev->muxc->priv = client; 789 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); 790 if (ret) 791 goto err_kfree; 792 793 /* create dvb_frontend */ 794 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 795 dev->fe.demodulator_priv = client; 796 *config->i2c_adapter = dev->muxc->adapter[0]; 797 *config->fe = &dev->fe; 798 dev->ts_mode = config->ts_mode; 799 dev->ts_clock_inv = config->ts_clock_inv; 800 dev->ts_clock_gapped = config->ts_clock_gapped; 801 802 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n", 803 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 804 dev->version >> 8 & 0xff); 805 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 806 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 807 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 808 809 return 0; 810 err_kfree: 811 kfree(dev); 812 err: 813 dev_warn(&client->dev, "probe failed = %d\n", ret); 814 return ret; 815 } 816 817 static int si2168_remove(struct i2c_client *client) 818 { 819 struct si2168_dev *dev = i2c_get_clientdata(client); 820 821 dev_dbg(&client->dev, "\n"); 822 823 i2c_mux_del_adapters(dev->muxc); 824 825 dev->fe.ops.release = NULL; 826 dev->fe.demodulator_priv = NULL; 827 828 kfree(dev); 829 830 return 0; 831 } 832 833 static const struct i2c_device_id si2168_id_table[] = { 834 {"si2168", 0}, 835 {} 836 }; 837 MODULE_DEVICE_TABLE(i2c, si2168_id_table); 838 839 static struct i2c_driver si2168_driver = { 840 .driver = { 841 .name = "si2168", 842 .suppress_bind_attrs = true, 843 }, 844 .probe = si2168_probe, 845 .remove = si2168_remove, 846 .id_table = si2168_id_table, 847 }; 848 849 module_i2c_driver(si2168_driver); 850 851 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 852 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 853 MODULE_LICENSE("GPL"); 854 MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 855 MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 856 MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 857 MODULE_FIRMWARE(SI2168_D60_FIRMWARE); 858