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 manual value */ 86 if (dev->ts_mode & SI2168_TS_CLK_MANUAL) { 87 memcpy(cmd.args, "\x14\x00\x0d\x10\xe8\x03", 6); 88 cmd.wlen = 6; 89 cmd.rlen = 4; 90 ret = si2168_cmd_execute(client, &cmd); 91 if (ret) 92 return ret; 93 } 94 /* set TS_MODE property */ 95 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 96 if (dev->ts_mode & SI2168_TS_CLK_MANUAL) 97 cmd.args[4] = SI2168_TS_CLK_MANUAL; 98 if (acquire) 99 cmd.args[4] |= dev->ts_mode; 100 else 101 cmd.args[4] |= SI2168_TS_TRISTATE; 102 if (dev->ts_clock_gapped) 103 cmd.args[4] |= 0x40; 104 cmd.wlen = 6; 105 cmd.rlen = 4; 106 ret = si2168_cmd_execute(client, &cmd); 107 108 return ret; 109 } 110 111 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) 112 { 113 struct i2c_client *client = fe->demodulator_priv; 114 struct si2168_dev *dev = i2c_get_clientdata(client); 115 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 116 int ret, i; 117 unsigned int utmp, utmp1, utmp2; 118 struct si2168_cmd cmd; 119 120 *status = 0; 121 122 if (!dev->active) { 123 ret = -EAGAIN; 124 goto err; 125 } 126 127 switch (c->delivery_system) { 128 case SYS_DVBT: 129 memcpy(cmd.args, "\xa0\x01", 2); 130 cmd.wlen = 2; 131 cmd.rlen = 13; 132 break; 133 case SYS_DVBC_ANNEX_A: 134 memcpy(cmd.args, "\x90\x01", 2); 135 cmd.wlen = 2; 136 cmd.rlen = 9; 137 break; 138 case SYS_DVBT2: 139 memcpy(cmd.args, "\x50\x01", 2); 140 cmd.wlen = 2; 141 cmd.rlen = 14; 142 break; 143 default: 144 ret = -EINVAL; 145 goto err; 146 } 147 148 ret = si2168_cmd_execute(client, &cmd); 149 if (ret) 150 goto err; 151 152 switch ((cmd.args[2] >> 1) & 0x03) { 153 case 0x01: 154 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 155 break; 156 case 0x03: 157 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 158 FE_HAS_SYNC | FE_HAS_LOCK; 159 break; 160 } 161 162 dev->fe_status = *status; 163 164 if (*status & FE_HAS_LOCK) { 165 c->cnr.len = 1; 166 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 167 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 168 } else { 169 c->cnr.len = 1; 170 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 171 } 172 173 dev_dbg(&client->dev, "status=%02x args=%*ph\n", 174 *status, cmd.rlen, cmd.args); 175 176 /* BER */ 177 if (*status & FE_HAS_VITERBI) { 178 memcpy(cmd.args, "\x82\x00", 2); 179 cmd.wlen = 2; 180 cmd.rlen = 3; 181 ret = si2168_cmd_execute(client, &cmd); 182 if (ret) 183 goto err; 184 185 /* 186 * Firmware returns [0, 255] mantissa and [0, 8] exponent. 187 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8 188 */ 189 utmp = clamp(8 - cmd.args[1], 0, 8); 190 for (i = 0, utmp1 = 1; i < utmp; i++) 191 utmp1 = utmp1 * 10; 192 193 utmp1 = cmd.args[2] * utmp1; 194 utmp2 = 100000000; /* 10^8 */ 195 196 dev_dbg(&client->dev, 197 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n", 198 utmp1, utmp2, cmd.args[2], cmd.args[1]); 199 200 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 201 c->post_bit_error.stat[0].uvalue += utmp1; 202 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 203 c->post_bit_count.stat[0].uvalue += utmp2; 204 } else { 205 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 206 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 207 } 208 209 /* UCB */ 210 if (*status & FE_HAS_SYNC) { 211 memcpy(cmd.args, "\x84\x01", 2); 212 cmd.wlen = 2; 213 cmd.rlen = 3; 214 ret = si2168_cmd_execute(client, &cmd); 215 if (ret) 216 goto err; 217 218 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0; 219 dev_dbg(&client->dev, "block_error=%u\n", utmp1); 220 221 /* Sometimes firmware returns bogus value */ 222 if (utmp1 == 0xffff) 223 utmp1 = 0; 224 225 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 226 c->block_error.stat[0].uvalue += utmp1; 227 } else { 228 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 229 } 230 231 return 0; 232 err: 233 dev_dbg(&client->dev, "failed=%d\n", ret); 234 return ret; 235 } 236 237 static int si2168_set_frontend(struct dvb_frontend *fe) 238 { 239 struct i2c_client *client = fe->demodulator_priv; 240 struct si2168_dev *dev = i2c_get_clientdata(client); 241 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 242 int ret; 243 struct si2168_cmd cmd; 244 u8 bandwidth, delivery_system; 245 246 dev_dbg(&client->dev, 247 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n", 248 c->delivery_system, c->modulation, c->frequency, 249 c->bandwidth_hz, c->symbol_rate, c->inversion, 250 c->stream_id); 251 252 if (!dev->active) { 253 ret = -EAGAIN; 254 goto err; 255 } 256 257 switch (c->delivery_system) { 258 case SYS_DVBT: 259 delivery_system = 0x20; 260 break; 261 case SYS_DVBC_ANNEX_A: 262 delivery_system = 0x30; 263 break; 264 case SYS_DVBT2: 265 delivery_system = 0x70; 266 break; 267 default: 268 ret = -EINVAL; 269 goto err; 270 } 271 272 if (c->bandwidth_hz == 0) { 273 ret = -EINVAL; 274 goto err; 275 } else if (c->bandwidth_hz <= 2000000) 276 bandwidth = 0x02; 277 else if (c->bandwidth_hz <= 5000000) 278 bandwidth = 0x05; 279 else if (c->bandwidth_hz <= 6000000) 280 bandwidth = 0x06; 281 else if (c->bandwidth_hz <= 7000000) 282 bandwidth = 0x07; 283 else if (c->bandwidth_hz <= 8000000) 284 bandwidth = 0x08; 285 else if (c->bandwidth_hz <= 9000000) 286 bandwidth = 0x09; 287 else if (c->bandwidth_hz <= 10000000) 288 bandwidth = 0x0a; 289 else 290 bandwidth = 0x0f; 291 292 /* program tuner */ 293 if (fe->ops.tuner_ops.set_params) { 294 ret = fe->ops.tuner_ops.set_params(fe); 295 if (ret) 296 goto err; 297 } 298 299 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 300 cmd.wlen = 5; 301 cmd.rlen = 5; 302 ret = si2168_cmd_execute(client, &cmd); 303 if (ret) 304 goto err; 305 306 /* that has no big effect */ 307 if (c->delivery_system == SYS_DVBT) 308 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 309 else if (c->delivery_system == SYS_DVBC_ANNEX_A) 310 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 311 else if (c->delivery_system == SYS_DVBT2) 312 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 313 cmd.wlen = 6; 314 cmd.rlen = 3; 315 ret = si2168_cmd_execute(client, &cmd); 316 if (ret) 317 goto err; 318 319 if (c->delivery_system == SYS_DVBT2) { 320 /* select PLP */ 321 cmd.args[0] = 0x52; 322 cmd.args[1] = c->stream_id & 0xff; 323 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 324 cmd.wlen = 3; 325 cmd.rlen = 1; 326 ret = si2168_cmd_execute(client, &cmd); 327 if (ret) 328 goto err; 329 } 330 331 memcpy(cmd.args, "\x51\x03", 2); 332 cmd.wlen = 2; 333 cmd.rlen = 12; 334 ret = si2168_cmd_execute(client, &cmd); 335 if (ret) 336 goto err; 337 338 memcpy(cmd.args, "\x12\x08\x04", 3); 339 cmd.wlen = 3; 340 cmd.rlen = 3; 341 ret = si2168_cmd_execute(client, &cmd); 342 if (ret) 343 goto err; 344 345 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 346 cmd.wlen = 6; 347 cmd.rlen = 4; 348 ret = si2168_cmd_execute(client, &cmd); 349 if (ret) 350 goto err; 351 352 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 353 cmd.wlen = 6; 354 cmd.rlen = 4; 355 ret = si2168_cmd_execute(client, &cmd); 356 if (ret) 357 goto err; 358 359 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 360 cmd.wlen = 6; 361 cmd.rlen = 4; 362 ret = si2168_cmd_execute(client, &cmd); 363 if (ret) 364 goto err; 365 366 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 367 cmd.args[4] = delivery_system | bandwidth; 368 if (dev->spectral_inversion) 369 cmd.args[5] |= 1; 370 cmd.wlen = 6; 371 cmd.rlen = 4; 372 ret = si2168_cmd_execute(client, &cmd); 373 if (ret) 374 goto err; 375 376 /* set DVB-C symbol rate */ 377 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 378 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 379 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; 380 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 381 cmd.wlen = 6; 382 cmd.rlen = 4; 383 ret = si2168_cmd_execute(client, &cmd); 384 if (ret) 385 goto err; 386 } 387 388 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\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, "\x14\x00\x09\x10\xe3\x08", 6); 396 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 397 cmd.wlen = 6; 398 cmd.rlen = 4; 399 ret = si2168_cmd_execute(client, &cmd); 400 if (ret) 401 goto err; 402 403 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 404 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 405 cmd.wlen = 6; 406 cmd.rlen = 4; 407 ret = si2168_cmd_execute(client, &cmd); 408 if (ret) 409 goto err; 410 411 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 412 cmd.wlen = 6; 413 cmd.rlen = 4; 414 ret = si2168_cmd_execute(client, &cmd); 415 if (ret) 416 goto err; 417 418 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 419 cmd.wlen = 6; 420 cmd.rlen = 4; 421 ret = si2168_cmd_execute(client, &cmd); 422 if (ret) 423 goto err; 424 425 memcpy(cmd.args, "\x85", 1); 426 cmd.wlen = 1; 427 cmd.rlen = 1; 428 ret = si2168_cmd_execute(client, &cmd); 429 if (ret) 430 goto err; 431 432 dev->delivery_system = c->delivery_system; 433 434 /* enable ts bus */ 435 ret = si2168_ts_bus_ctrl(fe, 1); 436 if (ret) 437 goto err; 438 439 return 0; 440 err: 441 dev_dbg(&client->dev, "failed=%d\n", ret); 442 return ret; 443 } 444 445 static int si2168_init(struct dvb_frontend *fe) 446 { 447 struct i2c_client *client = fe->demodulator_priv; 448 struct si2168_dev *dev = i2c_get_clientdata(client); 449 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 450 int ret, len, remaining; 451 const struct firmware *fw; 452 struct si2168_cmd cmd; 453 454 dev_dbg(&client->dev, "\n"); 455 456 /* initialize */ 457 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 458 cmd.wlen = 13; 459 cmd.rlen = 0; 460 ret = si2168_cmd_execute(client, &cmd); 461 if (ret) 462 goto err; 463 464 if (dev->warm) { 465 /* resume */ 466 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 467 cmd.wlen = 8; 468 cmd.rlen = 1; 469 ret = si2168_cmd_execute(client, &cmd); 470 if (ret) 471 goto err; 472 473 udelay(100); 474 memcpy(cmd.args, "\x85", 1); 475 cmd.wlen = 1; 476 cmd.rlen = 1; 477 ret = si2168_cmd_execute(client, &cmd); 478 if (ret) 479 goto err; 480 481 goto warm; 482 } 483 484 /* power up */ 485 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 486 cmd.wlen = 8; 487 cmd.rlen = 1; 488 ret = si2168_cmd_execute(client, &cmd); 489 if (ret) 490 goto err; 491 492 /* request the firmware, this will block and timeout */ 493 ret = request_firmware(&fw, dev->firmware_name, &client->dev); 494 if (ret) { 495 /* fallback mechanism to handle old name for Si2168 B40 fw */ 496 if (dev->chip_id == SI2168_CHIP_ID_B40) { 497 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK; 498 ret = request_firmware(&fw, dev->firmware_name, 499 &client->dev); 500 } 501 502 if (ret == 0) { 503 dev_notice(&client->dev, 504 "please install firmware file '%s'\n", 505 SI2168_B40_FIRMWARE); 506 } else { 507 dev_err(&client->dev, 508 "firmware file '%s' not found\n", 509 dev->firmware_name); 510 goto err_release_firmware; 511 } 512 } 513 514 dev_info(&client->dev, "downloading firmware from file '%s'\n", 515 dev->firmware_name); 516 517 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 518 /* firmware is in the new format */ 519 for (remaining = fw->size; remaining > 0; remaining -= 17) { 520 len = fw->data[fw->size - remaining]; 521 if (len > SI2168_ARGLEN) { 522 ret = -EINVAL; 523 break; 524 } 525 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 526 cmd.wlen = len; 527 cmd.rlen = 1; 528 ret = si2168_cmd_execute(client, &cmd); 529 if (ret) 530 break; 531 } 532 } else if (fw->size % 8 == 0) { 533 /* firmware is in the old format */ 534 for (remaining = fw->size; remaining > 0; remaining -= 8) { 535 len = 8; 536 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 537 cmd.wlen = len; 538 cmd.rlen = 1; 539 ret = si2168_cmd_execute(client, &cmd); 540 if (ret) 541 break; 542 } 543 } else { 544 /* bad or unknown firmware format */ 545 ret = -EINVAL; 546 } 547 548 if (ret) { 549 dev_err(&client->dev, "firmware download failed %d\n", ret); 550 goto err_release_firmware; 551 } 552 553 release_firmware(fw); 554 555 memcpy(cmd.args, "\x01\x01", 2); 556 cmd.wlen = 2; 557 cmd.rlen = 1; 558 ret = si2168_cmd_execute(client, &cmd); 559 if (ret) 560 goto err; 561 562 /* query firmware version */ 563 memcpy(cmd.args, "\x11", 1); 564 cmd.wlen = 1; 565 cmd.rlen = 10; 566 ret = si2168_cmd_execute(client, &cmd); 567 if (ret) 568 goto err; 569 570 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | 571 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; 572 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 573 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 574 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 575 576 /* set ts mode */ 577 ret = si2168_ts_bus_ctrl(fe, 1); 578 if (ret) 579 goto err; 580 581 dev->warm = true; 582 warm: 583 /* Init stats here to indicate which stats are supported */ 584 c->cnr.len = 1; 585 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 586 c->post_bit_error.len = 1; 587 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 588 c->post_bit_count.len = 1; 589 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 590 c->block_error.len = 1; 591 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 592 593 dev->active = true; 594 595 return 0; 596 err_release_firmware: 597 release_firmware(fw); 598 err: 599 dev_dbg(&client->dev, "failed=%d\n", ret); 600 return ret; 601 } 602 603 static int si2168_sleep(struct dvb_frontend *fe) 604 { 605 struct i2c_client *client = fe->demodulator_priv; 606 struct si2168_dev *dev = i2c_get_clientdata(client); 607 int ret; 608 struct si2168_cmd cmd; 609 610 dev_dbg(&client->dev, "\n"); 611 612 dev->active = false; 613 614 /* tri-state data bus */ 615 ret = si2168_ts_bus_ctrl(fe, 0); 616 if (ret) 617 goto err; 618 619 /* Firmware later than B 4.0-11 loses warm state during sleep */ 620 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) 621 dev->warm = false; 622 623 memcpy(cmd.args, "\x13", 1); 624 cmd.wlen = 1; 625 cmd.rlen = 0; 626 ret = si2168_cmd_execute(client, &cmd); 627 if (ret) 628 goto err; 629 630 return 0; 631 err: 632 dev_dbg(&client->dev, "failed=%d\n", ret); 633 return ret; 634 } 635 636 static int si2168_get_tune_settings(struct dvb_frontend *fe, 637 struct dvb_frontend_tune_settings *s) 638 { 639 s->min_delay_ms = 900; 640 641 return 0; 642 } 643 644 static int si2168_select(struct i2c_mux_core *muxc, u32 chan) 645 { 646 struct i2c_client *client = i2c_mux_priv(muxc); 647 int ret; 648 struct si2168_cmd cmd; 649 650 /* open I2C gate */ 651 memcpy(cmd.args, "\xc0\x0d\x01", 3); 652 cmd.wlen = 3; 653 cmd.rlen = 0; 654 ret = si2168_cmd_execute(client, &cmd); 655 if (ret) 656 goto err; 657 658 return 0; 659 err: 660 dev_dbg(&client->dev, "failed=%d\n", ret); 661 return ret; 662 } 663 664 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan) 665 { 666 struct i2c_client *client = i2c_mux_priv(muxc); 667 int ret; 668 struct si2168_cmd cmd; 669 670 /* close I2C gate */ 671 memcpy(cmd.args, "\xc0\x0d\x00", 3); 672 cmd.wlen = 3; 673 cmd.rlen = 0; 674 ret = si2168_cmd_execute(client, &cmd); 675 if (ret) 676 goto err; 677 678 return 0; 679 err: 680 dev_dbg(&client->dev, "failed=%d\n", ret); 681 return ret; 682 } 683 684 static const struct dvb_frontend_ops si2168_ops = { 685 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 686 .info = { 687 .name = "Silicon Labs Si2168", 688 .frequency_min_hz = 48 * MHz, 689 .frequency_max_hz = 870 * MHz, 690 .frequency_stepsize_hz = 62500, 691 .symbol_rate_min = 1000000, 692 .symbol_rate_max = 7200000, 693 .caps = FE_CAN_FEC_1_2 | 694 FE_CAN_FEC_2_3 | 695 FE_CAN_FEC_3_4 | 696 FE_CAN_FEC_5_6 | 697 FE_CAN_FEC_7_8 | 698 FE_CAN_FEC_AUTO | 699 FE_CAN_QPSK | 700 FE_CAN_QAM_16 | 701 FE_CAN_QAM_32 | 702 FE_CAN_QAM_64 | 703 FE_CAN_QAM_128 | 704 FE_CAN_QAM_256 | 705 FE_CAN_QAM_AUTO | 706 FE_CAN_TRANSMISSION_MODE_AUTO | 707 FE_CAN_GUARD_INTERVAL_AUTO | 708 FE_CAN_HIERARCHY_AUTO | 709 FE_CAN_MUTE_TS | 710 FE_CAN_2G_MODULATION | 711 FE_CAN_MULTISTREAM 712 }, 713 714 .get_tune_settings = si2168_get_tune_settings, 715 716 .init = si2168_init, 717 .sleep = si2168_sleep, 718 719 .set_frontend = si2168_set_frontend, 720 721 .read_status = si2168_read_status, 722 }; 723 724 static int si2168_probe(struct i2c_client *client, 725 const struct i2c_device_id *id) 726 { 727 struct si2168_config *config = client->dev.platform_data; 728 struct si2168_dev *dev; 729 int ret; 730 struct si2168_cmd cmd; 731 732 dev_dbg(&client->dev, "\n"); 733 734 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 735 if (!dev) { 736 ret = -ENOMEM; 737 goto err; 738 } 739 740 i2c_set_clientdata(client, dev); 741 mutex_init(&dev->i2c_mutex); 742 743 /* Initialize */ 744 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 745 cmd.wlen = 13; 746 cmd.rlen = 0; 747 ret = si2168_cmd_execute(client, &cmd); 748 if (ret) 749 goto err_kfree; 750 751 /* Power up */ 752 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 753 cmd.wlen = 8; 754 cmd.rlen = 1; 755 ret = si2168_cmd_execute(client, &cmd); 756 if (ret) 757 goto err_kfree; 758 759 /* Query chip revision */ 760 memcpy(cmd.args, "\x02", 1); 761 cmd.wlen = 1; 762 cmd.rlen = 13; 763 ret = si2168_cmd_execute(client, &cmd); 764 if (ret) 765 goto err_kfree; 766 767 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | 768 cmd.args[3] << 8 | cmd.args[4] << 0; 769 770 switch (dev->chip_id) { 771 case SI2168_CHIP_ID_A20: 772 dev->firmware_name = SI2168_A20_FIRMWARE; 773 break; 774 case SI2168_CHIP_ID_A30: 775 dev->firmware_name = SI2168_A30_FIRMWARE; 776 break; 777 case SI2168_CHIP_ID_B40: 778 dev->firmware_name = SI2168_B40_FIRMWARE; 779 break; 780 case SI2168_CHIP_ID_D60: 781 dev->firmware_name = SI2168_D60_FIRMWARE; 782 break; 783 default: 784 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n", 785 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); 786 ret = -ENODEV; 787 goto err_kfree; 788 } 789 790 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 | 791 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0; 792 793 /* create mux i2c adapter for tuner */ 794 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 795 1, 0, I2C_MUX_LOCKED, 796 si2168_select, si2168_deselect); 797 if (!dev->muxc) { 798 ret = -ENOMEM; 799 goto err_kfree; 800 } 801 dev->muxc->priv = client; 802 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); 803 if (ret) 804 goto err_kfree; 805 806 /* create dvb_frontend */ 807 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 808 dev->fe.demodulator_priv = client; 809 *config->i2c_adapter = dev->muxc->adapter[0]; 810 *config->fe = &dev->fe; 811 dev->ts_mode = config->ts_mode; 812 dev->ts_clock_inv = config->ts_clock_inv; 813 dev->ts_clock_gapped = config->ts_clock_gapped; 814 dev->spectral_inversion = config->spectral_inversion; 815 816 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n", 817 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 818 dev->version >> 8 & 0xff); 819 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 820 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 821 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 822 823 return 0; 824 err_kfree: 825 kfree(dev); 826 err: 827 dev_warn(&client->dev, "probe failed = %d\n", ret); 828 return ret; 829 } 830 831 static int si2168_remove(struct i2c_client *client) 832 { 833 struct si2168_dev *dev = i2c_get_clientdata(client); 834 835 dev_dbg(&client->dev, "\n"); 836 837 i2c_mux_del_adapters(dev->muxc); 838 839 dev->fe.ops.release = NULL; 840 dev->fe.demodulator_priv = NULL; 841 842 kfree(dev); 843 844 return 0; 845 } 846 847 static const struct i2c_device_id si2168_id_table[] = { 848 {"si2168", 0}, 849 {} 850 }; 851 MODULE_DEVICE_TABLE(i2c, si2168_id_table); 852 853 static struct i2c_driver si2168_driver = { 854 .driver = { 855 .name = "si2168", 856 .suppress_bind_attrs = true, 857 }, 858 .probe = si2168_probe, 859 .remove = si2168_remove, 860 .id_table = si2168_id_table, 861 }; 862 863 module_i2c_driver(si2168_driver); 864 865 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 866 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 867 MODULE_LICENSE("GPL"); 868 MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 869 MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 870 MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 871 MODULE_FIRMWARE(SI2168_D60_FIRMWARE); 872