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 if (dev->spectral_inversion) 343 cmd.args[5] |= 1; 344 cmd.wlen = 6; 345 cmd.rlen = 4; 346 ret = si2168_cmd_execute(client, &cmd); 347 if (ret) 348 goto err; 349 350 /* set DVB-C symbol rate */ 351 if (c->delivery_system == SYS_DVBC_ANNEX_A) { 352 memcpy(cmd.args, "\x14\x00\x02\x11", 4); 353 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; 354 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 355 cmd.wlen = 6; 356 cmd.rlen = 4; 357 ret = si2168_cmd_execute(client, &cmd); 358 if (ret) 359 goto err; 360 } 361 362 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 363 cmd.wlen = 6; 364 cmd.rlen = 4; 365 ret = si2168_cmd_execute(client, &cmd); 366 if (ret) 367 goto err; 368 369 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6); 370 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 371 cmd.wlen = 6; 372 cmd.rlen = 4; 373 ret = si2168_cmd_execute(client, &cmd); 374 if (ret) 375 goto err; 376 377 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); 378 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; 379 cmd.wlen = 6; 380 cmd.rlen = 4; 381 ret = si2168_cmd_execute(client, &cmd); 382 if (ret) 383 goto err; 384 385 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 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\x01\x03\x0c\x00", 6); 393 cmd.wlen = 6; 394 cmd.rlen = 4; 395 ret = si2168_cmd_execute(client, &cmd); 396 if (ret) 397 goto err; 398 399 memcpy(cmd.args, "\x85", 1); 400 cmd.wlen = 1; 401 cmd.rlen = 1; 402 ret = si2168_cmd_execute(client, &cmd); 403 if (ret) 404 goto err; 405 406 dev->delivery_system = c->delivery_system; 407 408 return 0; 409 err: 410 dev_dbg(&client->dev, "failed=%d\n", ret); 411 return ret; 412 } 413 414 static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) 415 { 416 struct i2c_client *client = fe->demodulator_priv; 417 struct si2168_dev *dev = i2c_get_clientdata(client); 418 struct si2168_cmd cmd; 419 int ret = 0; 420 421 dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire); 422 423 /* set TS_MODE property */ 424 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 425 if (acquire) 426 cmd.args[4] |= dev->ts_mode; 427 else 428 cmd.args[4] |= SI2168_TS_TRISTATE; 429 if (dev->ts_clock_gapped) 430 cmd.args[4] |= 0x40; 431 cmd.wlen = 6; 432 cmd.rlen = 4; 433 ret = si2168_cmd_execute(client, &cmd); 434 435 return ret; 436 } 437 438 static int si2168_init(struct dvb_frontend *fe) 439 { 440 struct i2c_client *client = fe->demodulator_priv; 441 struct si2168_dev *dev = i2c_get_clientdata(client); 442 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 443 int ret, len, remaining; 444 const struct firmware *fw; 445 struct si2168_cmd cmd; 446 447 dev_dbg(&client->dev, "\n"); 448 449 /* initialize */ 450 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 451 cmd.wlen = 13; 452 cmd.rlen = 0; 453 ret = si2168_cmd_execute(client, &cmd); 454 if (ret) 455 goto err; 456 457 if (dev->warm) { 458 /* resume */ 459 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 460 cmd.wlen = 8; 461 cmd.rlen = 1; 462 ret = si2168_cmd_execute(client, &cmd); 463 if (ret) 464 goto err; 465 466 udelay(100); 467 memcpy(cmd.args, "\x85", 1); 468 cmd.wlen = 1; 469 cmd.rlen = 1; 470 ret = si2168_cmd_execute(client, &cmd); 471 if (ret) 472 goto err; 473 474 goto warm; 475 } 476 477 /* power up */ 478 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 479 cmd.wlen = 8; 480 cmd.rlen = 1; 481 ret = si2168_cmd_execute(client, &cmd); 482 if (ret) 483 goto err; 484 485 /* request the firmware, this will block and timeout */ 486 ret = request_firmware(&fw, dev->firmware_name, &client->dev); 487 if (ret) { 488 /* fallback mechanism to handle old name for Si2168 B40 fw */ 489 if (dev->chip_id == SI2168_CHIP_ID_B40) { 490 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK; 491 ret = request_firmware(&fw, dev->firmware_name, 492 &client->dev); 493 } 494 495 if (ret == 0) { 496 dev_notice(&client->dev, 497 "please install firmware file '%s'\n", 498 SI2168_B40_FIRMWARE); 499 } else { 500 dev_err(&client->dev, 501 "firmware file '%s' not found\n", 502 dev->firmware_name); 503 goto err_release_firmware; 504 } 505 } 506 507 dev_info(&client->dev, "downloading firmware from file '%s'\n", 508 dev->firmware_name); 509 510 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 511 /* firmware is in the new format */ 512 for (remaining = fw->size; remaining > 0; remaining -= 17) { 513 len = fw->data[fw->size - remaining]; 514 if (len > SI2168_ARGLEN) { 515 ret = -EINVAL; 516 break; 517 } 518 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 519 cmd.wlen = len; 520 cmd.rlen = 1; 521 ret = si2168_cmd_execute(client, &cmd); 522 if (ret) 523 break; 524 } 525 } else if (fw->size % 8 == 0) { 526 /* firmware is in the old format */ 527 for (remaining = fw->size; remaining > 0; remaining -= 8) { 528 len = 8; 529 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 530 cmd.wlen = len; 531 cmd.rlen = 1; 532 ret = si2168_cmd_execute(client, &cmd); 533 if (ret) 534 break; 535 } 536 } else { 537 /* bad or unknown firmware format */ 538 ret = -EINVAL; 539 } 540 541 if (ret) { 542 dev_err(&client->dev, "firmware download failed %d\n", ret); 543 goto err_release_firmware; 544 } 545 546 release_firmware(fw); 547 548 memcpy(cmd.args, "\x01\x01", 2); 549 cmd.wlen = 2; 550 cmd.rlen = 1; 551 ret = si2168_cmd_execute(client, &cmd); 552 if (ret) 553 goto err; 554 555 /* query firmware version */ 556 memcpy(cmd.args, "\x11", 1); 557 cmd.wlen = 1; 558 cmd.rlen = 10; 559 ret = si2168_cmd_execute(client, &cmd); 560 if (ret) 561 goto err; 562 563 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | 564 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; 565 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 566 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 567 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 568 569 ret = si2168_ts_bus_ctrl(fe, 1); 570 if (ret) 571 goto err; 572 573 dev->warm = true; 574 warm: 575 /* Init stats here to indicate which stats are supported */ 576 c->cnr.len = 1; 577 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 578 c->post_bit_error.len = 1; 579 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 580 c->post_bit_count.len = 1; 581 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 582 c->block_error.len = 1; 583 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 584 585 dev->active = true; 586 587 return 0; 588 err_release_firmware: 589 release_firmware(fw); 590 err: 591 dev_dbg(&client->dev, "failed=%d\n", ret); 592 return ret; 593 } 594 595 static int si2168_sleep(struct dvb_frontend *fe) 596 { 597 struct i2c_client *client = fe->demodulator_priv; 598 struct si2168_dev *dev = i2c_get_clientdata(client); 599 int ret; 600 struct si2168_cmd cmd; 601 602 dev_dbg(&client->dev, "\n"); 603 604 dev->active = false; 605 606 /* tri-state data bus */ 607 si2168_ts_bus_ctrl(fe, 0); 608 609 /* Firmware B 4.0-11 or later loses warm state during sleep */ 610 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) 611 dev->warm = false; 612 613 memcpy(cmd.args, "\x13", 1); 614 cmd.wlen = 1; 615 cmd.rlen = 0; 616 ret = si2168_cmd_execute(client, &cmd); 617 if (ret) 618 goto err; 619 620 return 0; 621 err: 622 dev_dbg(&client->dev, "failed=%d\n", ret); 623 return ret; 624 } 625 626 static int si2168_get_tune_settings(struct dvb_frontend *fe, 627 struct dvb_frontend_tune_settings *s) 628 { 629 s->min_delay_ms = 900; 630 631 return 0; 632 } 633 634 static int si2168_select(struct i2c_mux_core *muxc, u32 chan) 635 { 636 struct i2c_client *client = i2c_mux_priv(muxc); 637 int ret; 638 struct si2168_cmd cmd; 639 640 /* open I2C gate */ 641 memcpy(cmd.args, "\xc0\x0d\x01", 3); 642 cmd.wlen = 3; 643 cmd.rlen = 0; 644 ret = si2168_cmd_execute(client, &cmd); 645 if (ret) 646 goto err; 647 648 return 0; 649 err: 650 dev_dbg(&client->dev, "failed=%d\n", ret); 651 return ret; 652 } 653 654 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan) 655 { 656 struct i2c_client *client = i2c_mux_priv(muxc); 657 int ret; 658 struct si2168_cmd cmd; 659 660 /* close I2C gate */ 661 memcpy(cmd.args, "\xc0\x0d\x00", 3); 662 cmd.wlen = 3; 663 cmd.rlen = 0; 664 ret = si2168_cmd_execute(client, &cmd); 665 if (ret) 666 goto err; 667 668 return 0; 669 err: 670 dev_dbg(&client->dev, "failed=%d\n", ret); 671 return ret; 672 } 673 674 static const struct dvb_frontend_ops si2168_ops = { 675 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 676 .info = { 677 .name = "Silicon Labs Si2168", 678 .symbol_rate_min = 1000000, 679 .symbol_rate_max = 7200000, 680 .caps = FE_CAN_FEC_1_2 | 681 FE_CAN_FEC_2_3 | 682 FE_CAN_FEC_3_4 | 683 FE_CAN_FEC_5_6 | 684 FE_CAN_FEC_7_8 | 685 FE_CAN_FEC_AUTO | 686 FE_CAN_QPSK | 687 FE_CAN_QAM_16 | 688 FE_CAN_QAM_32 | 689 FE_CAN_QAM_64 | 690 FE_CAN_QAM_128 | 691 FE_CAN_QAM_256 | 692 FE_CAN_QAM_AUTO | 693 FE_CAN_TRANSMISSION_MODE_AUTO | 694 FE_CAN_GUARD_INTERVAL_AUTO | 695 FE_CAN_HIERARCHY_AUTO | 696 FE_CAN_MUTE_TS | 697 FE_CAN_2G_MODULATION | 698 FE_CAN_MULTISTREAM 699 }, 700 701 .get_tune_settings = si2168_get_tune_settings, 702 703 .init = si2168_init, 704 .sleep = si2168_sleep, 705 706 .ts_bus_ctrl = si2168_ts_bus_ctrl, 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