1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Silicon Labs Si2168 DVB-T/T2/C demodulator driver 4 * 5 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> 6 */ 7 8 #include <linux/delay.h> 9 10 #include "si2168_priv.h" 11 12 static const struct dvb_frontend_ops si2168_ops; 13 14 /* execute firmware command */ 15 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd) 16 { 17 struct si2168_dev *dev = i2c_get_clientdata(client); 18 int ret; 19 unsigned long timeout; 20 21 mutex_lock(&dev->i2c_mutex); 22 23 if (cmd->wlen) { 24 /* write cmd and args for firmware */ 25 ret = i2c_master_send(client, cmd->args, cmd->wlen); 26 if (ret < 0) { 27 goto err_mutex_unlock; 28 } else if (ret != cmd->wlen) { 29 ret = -EREMOTEIO; 30 goto err_mutex_unlock; 31 } 32 } 33 34 if (cmd->rlen) { 35 /* wait cmd execution terminate */ 36 #define TIMEOUT 70 37 timeout = jiffies + msecs_to_jiffies(TIMEOUT); 38 while (!time_after(jiffies, timeout)) { 39 ret = i2c_master_recv(client, cmd->args, cmd->rlen); 40 if (ret < 0) { 41 goto err_mutex_unlock; 42 } else if (ret != cmd->rlen) { 43 ret = -EREMOTEIO; 44 goto err_mutex_unlock; 45 } 46 47 /* firmware ready? */ 48 if ((cmd->args[0] >> 7) & 0x01) 49 break; 50 } 51 52 dev_dbg(&client->dev, "cmd execution took %d ms\n", 53 jiffies_to_msecs(jiffies) - 54 (jiffies_to_msecs(timeout) - TIMEOUT)); 55 56 /* error bit set? */ 57 if ((cmd->args[0] >> 6) & 0x01) { 58 ret = -EREMOTEIO; 59 goto err_mutex_unlock; 60 } 61 62 if (!((cmd->args[0] >> 7) & 0x01)) { 63 ret = -ETIMEDOUT; 64 goto err_mutex_unlock; 65 } 66 } 67 68 mutex_unlock(&dev->i2c_mutex); 69 return 0; 70 err_mutex_unlock: 71 mutex_unlock(&dev->i2c_mutex); 72 dev_dbg(&client->dev, "failed=%d\n", ret); 73 return ret; 74 } 75 76 static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) 77 { 78 struct i2c_client *client = fe->demodulator_priv; 79 struct si2168_dev *dev = i2c_get_clientdata(client); 80 struct si2168_cmd cmd; 81 int ret = 0; 82 83 dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire); 84 85 /* set TS_MODE property */ 86 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 87 if (acquire) 88 cmd.args[4] |= dev->ts_mode; 89 else 90 cmd.args[4] |= SI2168_TS_TRISTATE; 91 if (dev->ts_clock_gapped) 92 cmd.args[4] |= 0x40; 93 cmd.wlen = 6; 94 cmd.rlen = 4; 95 ret = si2168_cmd_execute(client, &cmd); 96 97 return ret; 98 } 99 100 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) 101 { 102 struct i2c_client *client = fe->demodulator_priv; 103 struct si2168_dev *dev = i2c_get_clientdata(client); 104 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 105 int ret, i; 106 unsigned int utmp, utmp1, utmp2; 107 struct si2168_cmd cmd; 108 109 *status = 0; 110 111 if (!dev->active) { 112 ret = -EAGAIN; 113 goto err; 114 } 115 116 switch (c->delivery_system) { 117 case SYS_DVBT: 118 memcpy(cmd.args, "\xa0\x01", 2); 119 cmd.wlen = 2; 120 cmd.rlen = 13; 121 break; 122 case SYS_DVBC_ANNEX_A: 123 memcpy(cmd.args, "\x90\x01", 2); 124 cmd.wlen = 2; 125 cmd.rlen = 9; 126 break; 127 case SYS_DVBT2: 128 memcpy(cmd.args, "\x50\x01", 2); 129 cmd.wlen = 2; 130 cmd.rlen = 14; 131 break; 132 default: 133 ret = -EINVAL; 134 goto err; 135 } 136 137 ret = si2168_cmd_execute(client, &cmd); 138 if (ret) 139 goto err; 140 141 switch ((cmd.args[2] >> 1) & 0x03) { 142 case 0x01: 143 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 144 break; 145 case 0x03: 146 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 147 FE_HAS_SYNC | FE_HAS_LOCK; 148 break; 149 } 150 151 dev->fe_status = *status; 152 153 if (*status & FE_HAS_LOCK) { 154 c->cnr.len = 1; 155 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 156 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 157 } else { 158 c->cnr.len = 1; 159 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 160 } 161 162 dev_dbg(&client->dev, "status=%02x args=%*ph\n", 163 *status, cmd.rlen, cmd.args); 164 165 /* BER */ 166 if (*status & FE_HAS_VITERBI) { 167 memcpy(cmd.args, "\x82\x00", 2); 168 cmd.wlen = 2; 169 cmd.rlen = 3; 170 ret = si2168_cmd_execute(client, &cmd); 171 if (ret) 172 goto err; 173 174 /* 175 * Firmware returns [0, 255] mantissa and [0, 8] exponent. 176 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8 177 */ 178 utmp = clamp(8 - cmd.args[1], 0, 8); 179 for (i = 0, utmp1 = 1; i < utmp; i++) 180 utmp1 = utmp1 * 10; 181 182 utmp1 = cmd.args[2] * utmp1; 183 utmp2 = 100000000; /* 10^8 */ 184 185 dev_dbg(&client->dev, 186 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n", 187 utmp1, utmp2, cmd.args[2], cmd.args[1]); 188 189 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 190 c->post_bit_error.stat[0].uvalue += utmp1; 191 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 192 c->post_bit_count.stat[0].uvalue += utmp2; 193 } else { 194 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 195 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 196 } 197 198 /* UCB */ 199 if (*status & FE_HAS_SYNC) { 200 memcpy(cmd.args, "\x84\x01", 2); 201 cmd.wlen = 2; 202 cmd.rlen = 3; 203 ret = si2168_cmd_execute(client, &cmd); 204 if (ret) 205 goto err; 206 207 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0; 208 dev_dbg(&client->dev, "block_error=%u\n", utmp1); 209 210 /* Sometimes firmware returns bogus value */ 211 if (utmp1 == 0xffff) 212 utmp1 = 0; 213 214 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 215 c->block_error.stat[0].uvalue += utmp1; 216 } else { 217 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 218 } 219 220 return 0; 221 err: 222 dev_dbg(&client->dev, "failed=%d\n", ret); 223 return ret; 224 } 225 226 static int si2168_set_frontend(struct dvb_frontend *fe) 227 { 228 struct i2c_client *client = fe->demodulator_priv; 229 struct si2168_dev *dev = i2c_get_clientdata(client); 230 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 231 int ret; 232 struct si2168_cmd cmd; 233 u8 bandwidth, delivery_system; 234 235 dev_dbg(&client->dev, 236 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n", 237 c->delivery_system, c->modulation, c->frequency, 238 c->bandwidth_hz, c->symbol_rate, c->inversion, 239 c->stream_id); 240 241 if (!dev->active) { 242 ret = -EAGAIN; 243 goto err; 244 } 245 246 switch (c->delivery_system) { 247 case SYS_DVBT: 248 delivery_system = 0x20; 249 break; 250 case SYS_DVBC_ANNEX_A: 251 delivery_system = 0x30; 252 break; 253 case SYS_DVBT2: 254 delivery_system = 0x70; 255 break; 256 default: 257 ret = -EINVAL; 258 goto err; 259 } 260 261 if (c->bandwidth_hz == 0) { 262 ret = -EINVAL; 263 goto err; 264 } else if (c->bandwidth_hz <= 2000000) 265 bandwidth = 0x02; 266 else if (c->bandwidth_hz <= 5000000) 267 bandwidth = 0x05; 268 else if (c->bandwidth_hz <= 6000000) 269 bandwidth = 0x06; 270 else if (c->bandwidth_hz <= 7000000) 271 bandwidth = 0x07; 272 else if (c->bandwidth_hz <= 8000000) 273 bandwidth = 0x08; 274 else if (c->bandwidth_hz <= 9000000) 275 bandwidth = 0x09; 276 else if (c->bandwidth_hz <= 10000000) 277 bandwidth = 0x0a; 278 else 279 bandwidth = 0x0f; 280 281 /* program tuner */ 282 if (fe->ops.tuner_ops.set_params) { 283 ret = fe->ops.tuner_ops.set_params(fe); 284 if (ret) 285 goto err; 286 } 287 288 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 289 cmd.wlen = 5; 290 cmd.rlen = 5; 291 ret = si2168_cmd_execute(client, &cmd); 292 if (ret) 293 goto err; 294 295 /* that has no big effect */ 296 if (c->delivery_system == SYS_DVBT) 297 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 298 else if (c->delivery_system == SYS_DVBC_ANNEX_A) 299 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 300 else if (c->delivery_system == SYS_DVBT2) 301 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 302 cmd.wlen = 6; 303 cmd.rlen = 3; 304 ret = si2168_cmd_execute(client, &cmd); 305 if (ret) 306 goto err; 307 308 if (c->delivery_system == SYS_DVBT2) { 309 /* select PLP */ 310 cmd.args[0] = 0x52; 311 cmd.args[1] = c->stream_id & 0xff; 312 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 313 cmd.wlen = 3; 314 cmd.rlen = 1; 315 ret = si2168_cmd_execute(client, &cmd); 316 if (ret) 317 goto err; 318 } 319 320 memcpy(cmd.args, "\x51\x03", 2); 321 cmd.wlen = 2; 322 cmd.rlen = 12; 323 ret = si2168_cmd_execute(client, &cmd); 324 if (ret) 325 goto err; 326 327 memcpy(cmd.args, "\x12\x08\x04", 3); 328 cmd.wlen = 3; 329 cmd.rlen = 3; 330 ret = si2168_cmd_execute(client, &cmd); 331 if (ret) 332 goto err; 333 334 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 335 cmd.wlen = 6; 336 cmd.rlen = 4; 337 ret = si2168_cmd_execute(client, &cmd); 338 if (ret) 339 goto err; 340 341 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 342 cmd.wlen = 6; 343 cmd.rlen = 4; 344 ret = si2168_cmd_execute(client, &cmd); 345 if (ret) 346 goto err; 347 348 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 349 cmd.wlen = 6; 350 cmd.rlen = 4; 351 ret = si2168_cmd_execute(client, &cmd); 352 if (ret) 353 goto err; 354 355 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 356 cmd.args[4] = delivery_system | bandwidth; 357 if (dev->spectral_inversion) 358 cmd.args[5] |= 1; 359 cmd.wlen = 6; 360 cmd.rlen = 4; 361 ret = si2168_cmd_execute(client, &cmd); 362 if (ret) 363 goto err; 364 365 /* set DVB-C symbol rate */ 366 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 367 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 368 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; 369 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 370 cmd.wlen = 6; 371 cmd.rlen = 4; 372 ret = si2168_cmd_execute(client, &cmd); 373 if (ret) 374 goto err; 375 } 376 377 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 378 cmd.wlen = 6; 379 cmd.rlen = 4; 380 ret = si2168_cmd_execute(client, &cmd); 381 if (ret) 382 goto err; 383 384 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6); 385 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 386 cmd.wlen = 6; 387 cmd.rlen = 4; 388 ret = si2168_cmd_execute(client, &cmd); 389 if (ret) 390 goto err; 391 392 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 393 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 394 cmd.wlen = 6; 395 cmd.rlen = 4; 396 ret = si2168_cmd_execute(client, &cmd); 397 if (ret) 398 goto err; 399 400 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 401 cmd.wlen = 6; 402 cmd.rlen = 4; 403 ret = si2168_cmd_execute(client, &cmd); 404 if (ret) 405 goto err; 406 407 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 408 cmd.wlen = 6; 409 cmd.rlen = 4; 410 ret = si2168_cmd_execute(client, &cmd); 411 if (ret) 412 goto err; 413 414 memcpy(cmd.args, "\x85", 1); 415 cmd.wlen = 1; 416 cmd.rlen = 1; 417 ret = si2168_cmd_execute(client, &cmd); 418 if (ret) 419 goto err; 420 421 dev->delivery_system = c->delivery_system; 422 423 /* enable ts bus */ 424 ret = si2168_ts_bus_ctrl(fe, 1); 425 if (ret) 426 goto err; 427 428 return 0; 429 err: 430 dev_dbg(&client->dev, "failed=%d\n", ret); 431 return ret; 432 } 433 434 static int si2168_init(struct dvb_frontend *fe) 435 { 436 struct i2c_client *client = fe->demodulator_priv; 437 struct si2168_dev *dev = i2c_get_clientdata(client); 438 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 439 int ret, len, remaining; 440 const struct firmware *fw; 441 struct si2168_cmd cmd; 442 443 dev_dbg(&client->dev, "\n"); 444 445 /* initialize */ 446 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 447 cmd.wlen = 13; 448 cmd.rlen = 0; 449 ret = si2168_cmd_execute(client, &cmd); 450 if (ret) 451 goto err; 452 453 if (dev->warm) { 454 /* resume */ 455 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 456 cmd.wlen = 8; 457 cmd.rlen = 1; 458 ret = si2168_cmd_execute(client, &cmd); 459 if (ret) 460 goto err; 461 462 udelay(100); 463 memcpy(cmd.args, "\x85", 1); 464 cmd.wlen = 1; 465 cmd.rlen = 1; 466 ret = si2168_cmd_execute(client, &cmd); 467 if (ret) 468 goto err; 469 470 goto warm; 471 } 472 473 /* power up */ 474 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 475 cmd.wlen = 8; 476 cmd.rlen = 1; 477 ret = si2168_cmd_execute(client, &cmd); 478 if (ret) 479 goto err; 480 481 /* request the firmware, this will block and timeout */ 482 ret = request_firmware(&fw, dev->firmware_name, &client->dev); 483 if (ret) { 484 /* fallback mechanism to handle old name for Si2168 B40 fw */ 485 if (dev->chip_id == SI2168_CHIP_ID_B40) { 486 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK; 487 ret = request_firmware(&fw, dev->firmware_name, 488 &client->dev); 489 } 490 491 if (ret == 0) { 492 dev_notice(&client->dev, 493 "please install firmware file '%s'\n", 494 SI2168_B40_FIRMWARE); 495 } else { 496 dev_err(&client->dev, 497 "firmware file '%s' not found\n", 498 dev->firmware_name); 499 goto err_release_firmware; 500 } 501 } 502 503 dev_info(&client->dev, "downloading firmware from file '%s'\n", 504 dev->firmware_name); 505 506 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 507 /* firmware is in the new format */ 508 for (remaining = fw->size; remaining > 0; remaining -= 17) { 509 len = fw->data[fw->size - remaining]; 510 if (len > SI2168_ARGLEN) { 511 ret = -EINVAL; 512 break; 513 } 514 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 515 cmd.wlen = len; 516 cmd.rlen = 1; 517 ret = si2168_cmd_execute(client, &cmd); 518 if (ret) 519 break; 520 } 521 } else if (fw->size % 8 == 0) { 522 /* firmware is in the old format */ 523 for (remaining = fw->size; remaining > 0; remaining -= 8) { 524 len = 8; 525 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 526 cmd.wlen = len; 527 cmd.rlen = 1; 528 ret = si2168_cmd_execute(client, &cmd); 529 if (ret) 530 break; 531 } 532 } else { 533 /* bad or unknown firmware format */ 534 ret = -EINVAL; 535 } 536 537 if (ret) { 538 dev_err(&client->dev, "firmware download failed %d\n", ret); 539 goto err_release_firmware; 540 } 541 542 release_firmware(fw); 543 544 memcpy(cmd.args, "\x01\x01", 2); 545 cmd.wlen = 2; 546 cmd.rlen = 1; 547 ret = si2168_cmd_execute(client, &cmd); 548 if (ret) 549 goto err; 550 551 /* query firmware version */ 552 memcpy(cmd.args, "\x11", 1); 553 cmd.wlen = 1; 554 cmd.rlen = 10; 555 ret = si2168_cmd_execute(client, &cmd); 556 if (ret) 557 goto err; 558 559 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | 560 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; 561 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 562 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 563 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 564 565 /* set ts mode */ 566 ret = si2168_ts_bus_ctrl(fe, 1); 567 if (ret) 568 goto err; 569 570 dev->warm = true; 571 warm: 572 /* Init stats here to indicate which stats are supported */ 573 c->cnr.len = 1; 574 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 575 c->post_bit_error.len = 1; 576 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 577 c->post_bit_count.len = 1; 578 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 579 c->block_error.len = 1; 580 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 581 582 dev->active = true; 583 584 return 0; 585 err_release_firmware: 586 release_firmware(fw); 587 err: 588 dev_dbg(&client->dev, "failed=%d\n", ret); 589 return ret; 590 } 591 592 static int si2168_sleep(struct dvb_frontend *fe) 593 { 594 struct i2c_client *client = fe->demodulator_priv; 595 struct si2168_dev *dev = i2c_get_clientdata(client); 596 int ret; 597 struct si2168_cmd cmd; 598 599 dev_dbg(&client->dev, "\n"); 600 601 dev->active = false; 602 603 /* tri-state data bus */ 604 ret = si2168_ts_bus_ctrl(fe, 0); 605 if (ret) 606 goto err; 607 608 /* Firmware later than B 4.0-11 loses warm state during sleep */ 609 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) 610 dev->warm = false; 611 612 memcpy(cmd.args, "\x13", 1); 613 cmd.wlen = 1; 614 cmd.rlen = 0; 615 ret = si2168_cmd_execute(client, &cmd); 616 if (ret) 617 goto err; 618 619 return 0; 620 err: 621 dev_dbg(&client->dev, "failed=%d\n", ret); 622 return ret; 623 } 624 625 static int si2168_get_tune_settings(struct dvb_frontend *fe, 626 struct dvb_frontend_tune_settings *s) 627 { 628 s->min_delay_ms = 900; 629 630 return 0; 631 } 632 633 static int si2168_select(struct i2c_mux_core *muxc, u32 chan) 634 { 635 struct i2c_client *client = i2c_mux_priv(muxc); 636 int ret; 637 struct si2168_cmd cmd; 638 639 /* open I2C gate */ 640 memcpy(cmd.args, "\xc0\x0d\x01", 3); 641 cmd.wlen = 3; 642 cmd.rlen = 0; 643 ret = si2168_cmd_execute(client, &cmd); 644 if (ret) 645 goto err; 646 647 return 0; 648 err: 649 dev_dbg(&client->dev, "failed=%d\n", ret); 650 return ret; 651 } 652 653 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan) 654 { 655 struct i2c_client *client = i2c_mux_priv(muxc); 656 int ret; 657 struct si2168_cmd cmd; 658 659 /* close I2C gate */ 660 memcpy(cmd.args, "\xc0\x0d\x00", 3); 661 cmd.wlen = 3; 662 cmd.rlen = 0; 663 ret = si2168_cmd_execute(client, &cmd); 664 if (ret) 665 goto err; 666 667 return 0; 668 err: 669 dev_dbg(&client->dev, "failed=%d\n", ret); 670 return ret; 671 } 672 673 static const struct dvb_frontend_ops si2168_ops = { 674 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 675 .info = { 676 .name = "Silicon Labs Si2168", 677 .frequency_min_hz = 48 * MHz, 678 .frequency_max_hz = 870 * MHz, 679 .frequency_stepsize_hz = 62500, 680 .symbol_rate_min = 1000000, 681 .symbol_rate_max = 7200000, 682 .caps = FE_CAN_FEC_1_2 | 683 FE_CAN_FEC_2_3 | 684 FE_CAN_FEC_3_4 | 685 FE_CAN_FEC_5_6 | 686 FE_CAN_FEC_7_8 | 687 FE_CAN_FEC_AUTO | 688 FE_CAN_QPSK | 689 FE_CAN_QAM_16 | 690 FE_CAN_QAM_32 | 691 FE_CAN_QAM_64 | 692 FE_CAN_QAM_128 | 693 FE_CAN_QAM_256 | 694 FE_CAN_QAM_AUTO | 695 FE_CAN_TRANSMISSION_MODE_AUTO | 696 FE_CAN_GUARD_INTERVAL_AUTO | 697 FE_CAN_HIERARCHY_AUTO | 698 FE_CAN_MUTE_TS | 699 FE_CAN_2G_MODULATION | 700 FE_CAN_MULTISTREAM 701 }, 702 703 .get_tune_settings = si2168_get_tune_settings, 704 705 .init = si2168_init, 706 .sleep = si2168_sleep, 707 708 .set_frontend = si2168_set_frontend, 709 710 .read_status = si2168_read_status, 711 }; 712 713 static int si2168_probe(struct i2c_client *client, 714 const struct i2c_device_id *id) 715 { 716 struct si2168_config *config = client->dev.platform_data; 717 struct si2168_dev *dev; 718 int ret; 719 struct si2168_cmd cmd; 720 721 dev_dbg(&client->dev, "\n"); 722 723 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 724 if (!dev) { 725 ret = -ENOMEM; 726 goto err; 727 } 728 729 i2c_set_clientdata(client, dev); 730 mutex_init(&dev->i2c_mutex); 731 732 /* Initialize */ 733 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 734 cmd.wlen = 13; 735 cmd.rlen = 0; 736 ret = si2168_cmd_execute(client, &cmd); 737 if (ret) 738 goto err_kfree; 739 740 /* Power up */ 741 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 742 cmd.wlen = 8; 743 cmd.rlen = 1; 744 ret = si2168_cmd_execute(client, &cmd); 745 if (ret) 746 goto err_kfree; 747 748 /* Query chip revision */ 749 memcpy(cmd.args, "\x02", 1); 750 cmd.wlen = 1; 751 cmd.rlen = 13; 752 ret = si2168_cmd_execute(client, &cmd); 753 if (ret) 754 goto err_kfree; 755 756 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | 757 cmd.args[3] << 8 | cmd.args[4] << 0; 758 759 switch (dev->chip_id) { 760 case SI2168_CHIP_ID_A20: 761 dev->firmware_name = SI2168_A20_FIRMWARE; 762 break; 763 case SI2168_CHIP_ID_A30: 764 dev->firmware_name = SI2168_A30_FIRMWARE; 765 break; 766 case SI2168_CHIP_ID_B40: 767 dev->firmware_name = SI2168_B40_FIRMWARE; 768 break; 769 case SI2168_CHIP_ID_D60: 770 dev->firmware_name = SI2168_D60_FIRMWARE; 771 break; 772 default: 773 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n", 774 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); 775 ret = -ENODEV; 776 goto err_kfree; 777 } 778 779 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 | 780 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0; 781 782 /* create mux i2c adapter for tuner */ 783 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 784 1, 0, I2C_MUX_LOCKED, 785 si2168_select, si2168_deselect); 786 if (!dev->muxc) { 787 ret = -ENOMEM; 788 goto err_kfree; 789 } 790 dev->muxc->priv = client; 791 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); 792 if (ret) 793 goto err_kfree; 794 795 /* create dvb_frontend */ 796 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 797 dev->fe.demodulator_priv = client; 798 *config->i2c_adapter = dev->muxc->adapter[0]; 799 *config->fe = &dev->fe; 800 dev->ts_mode = config->ts_mode; 801 dev->ts_clock_inv = config->ts_clock_inv; 802 dev->ts_clock_gapped = config->ts_clock_gapped; 803 dev->spectral_inversion = config->spectral_inversion; 804 805 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n", 806 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 807 dev->version >> 8 & 0xff); 808 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 809 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 810 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 811 812 return 0; 813 err_kfree: 814 kfree(dev); 815 err: 816 dev_warn(&client->dev, "probe failed = %d\n", ret); 817 return ret; 818 } 819 820 static int si2168_remove(struct i2c_client *client) 821 { 822 struct si2168_dev *dev = i2c_get_clientdata(client); 823 824 dev_dbg(&client->dev, "\n"); 825 826 i2c_mux_del_adapters(dev->muxc); 827 828 dev->fe.ops.release = NULL; 829 dev->fe.demodulator_priv = NULL; 830 831 kfree(dev); 832 833 return 0; 834 } 835 836 static const struct i2c_device_id si2168_id_table[] = { 837 {"si2168", 0}, 838 {} 839 }; 840 MODULE_DEVICE_TABLE(i2c, si2168_id_table); 841 842 static struct i2c_driver si2168_driver = { 843 .driver = { 844 .name = "si2168", 845 .suppress_bind_attrs = true, 846 }, 847 .probe = si2168_probe, 848 .remove = si2168_remove, 849 .id_table = si2168_id_table, 850 }; 851 852 module_i2c_driver(si2168_driver); 853 854 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 855 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 856 MODULE_LICENSE("GPL"); 857 MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 858 MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 859 MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 860 MODULE_FIRMWARE(SI2168_D60_FIRMWARE); 861