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_init(struct dvb_frontend *fe) 413 { 414 struct i2c_client *client = fe->demodulator_priv; 415 struct si2168_dev *dev = i2c_get_clientdata(client); 416 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 417 int ret, len, remaining; 418 const struct firmware *fw; 419 struct si2168_cmd cmd; 420 421 dev_dbg(&client->dev, "\n"); 422 423 /* initialize */ 424 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 425 cmd.wlen = 13; 426 cmd.rlen = 0; 427 ret = si2168_cmd_execute(client, &cmd); 428 if (ret) 429 goto err; 430 431 if (dev->warm) { 432 /* resume */ 433 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); 434 cmd.wlen = 8; 435 cmd.rlen = 1; 436 ret = si2168_cmd_execute(client, &cmd); 437 if (ret) 438 goto err; 439 440 udelay(100); 441 memcpy(cmd.args, "\x85", 1); 442 cmd.wlen = 1; 443 cmd.rlen = 1; 444 ret = si2168_cmd_execute(client, &cmd); 445 if (ret) 446 goto err; 447 448 goto warm; 449 } 450 451 /* power up */ 452 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 453 cmd.wlen = 8; 454 cmd.rlen = 1; 455 ret = si2168_cmd_execute(client, &cmd); 456 if (ret) 457 goto err; 458 459 /* request the firmware, this will block and timeout */ 460 ret = request_firmware(&fw, dev->firmware_name, &client->dev); 461 if (ret) { 462 /* fallback mechanism to handle old name for Si2168 B40 fw */ 463 if (dev->chip_id == SI2168_CHIP_ID_B40) { 464 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK; 465 ret = request_firmware(&fw, dev->firmware_name, 466 &client->dev); 467 } 468 469 if (ret == 0) { 470 dev_notice(&client->dev, 471 "please install firmware file '%s'\n", 472 SI2168_B40_FIRMWARE); 473 } else { 474 dev_err(&client->dev, 475 "firmware file '%s' not found\n", 476 dev->firmware_name); 477 goto err_release_firmware; 478 } 479 } 480 481 dev_info(&client->dev, "downloading firmware from file '%s'\n", 482 dev->firmware_name); 483 484 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { 485 /* firmware is in the new format */ 486 for (remaining = fw->size; remaining > 0; remaining -= 17) { 487 len = fw->data[fw->size - remaining]; 488 if (len > SI2168_ARGLEN) { 489 ret = -EINVAL; 490 break; 491 } 492 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 493 cmd.wlen = len; 494 cmd.rlen = 1; 495 ret = si2168_cmd_execute(client, &cmd); 496 if (ret) 497 break; 498 } 499 } else if (fw->size % 8 == 0) { 500 /* firmware is in the old format */ 501 for (remaining = fw->size; remaining > 0; remaining -= 8) { 502 len = 8; 503 memcpy(cmd.args, &fw->data[fw->size - remaining], len); 504 cmd.wlen = len; 505 cmd.rlen = 1; 506 ret = si2168_cmd_execute(client, &cmd); 507 if (ret) 508 break; 509 } 510 } else { 511 /* bad or unknown firmware format */ 512 ret = -EINVAL; 513 } 514 515 if (ret) { 516 dev_err(&client->dev, "firmware download failed %d\n", ret); 517 goto err_release_firmware; 518 } 519 520 release_firmware(fw); 521 522 memcpy(cmd.args, "\x01\x01", 2); 523 cmd.wlen = 2; 524 cmd.rlen = 1; 525 ret = si2168_cmd_execute(client, &cmd); 526 if (ret) 527 goto err; 528 529 /* query firmware version */ 530 memcpy(cmd.args, "\x11", 1); 531 cmd.wlen = 1; 532 cmd.rlen = 10; 533 ret = si2168_cmd_execute(client, &cmd); 534 if (ret) 535 goto err; 536 537 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | 538 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; 539 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 540 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 541 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 542 543 /* set ts mode */ 544 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 545 cmd.args[4] |= dev->ts_mode; 546 if (dev->ts_clock_gapped) 547 cmd.args[4] |= 0x40; 548 cmd.wlen = 6; 549 cmd.rlen = 4; 550 ret = si2168_cmd_execute(client, &cmd); 551 if (ret) 552 goto err; 553 554 dev->warm = true; 555 warm: 556 /* Init stats here to indicate which stats are supported */ 557 c->cnr.len = 1; 558 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 559 c->post_bit_error.len = 1; 560 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 561 c->post_bit_count.len = 1; 562 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 563 c->block_error.len = 1; 564 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 565 566 dev->active = true; 567 568 return 0; 569 err_release_firmware: 570 release_firmware(fw); 571 err: 572 dev_dbg(&client->dev, "failed=%d\n", ret); 573 return ret; 574 } 575 576 static int si2168_sleep(struct dvb_frontend *fe) 577 { 578 struct i2c_client *client = fe->demodulator_priv; 579 struct si2168_dev *dev = i2c_get_clientdata(client); 580 int ret; 581 struct si2168_cmd cmd; 582 583 dev_dbg(&client->dev, "\n"); 584 585 dev->active = false; 586 587 /* Firmware B 4.0-11 or later loses warm state during sleep */ 588 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) 589 dev->warm = false; 590 591 memcpy(cmd.args, "\x13", 1); 592 cmd.wlen = 1; 593 cmd.rlen = 0; 594 ret = si2168_cmd_execute(client, &cmd); 595 if (ret) 596 goto err; 597 598 return 0; 599 err: 600 dev_dbg(&client->dev, "failed=%d\n", ret); 601 return ret; 602 } 603 604 static int si2168_get_tune_settings(struct dvb_frontend *fe, 605 struct dvb_frontend_tune_settings *s) 606 { 607 s->min_delay_ms = 900; 608 609 return 0; 610 } 611 612 static int si2168_select(struct i2c_mux_core *muxc, u32 chan) 613 { 614 struct i2c_client *client = i2c_mux_priv(muxc); 615 int ret; 616 struct si2168_cmd cmd; 617 618 /* open I2C gate */ 619 memcpy(cmd.args, "\xc0\x0d\x01", 3); 620 cmd.wlen = 3; 621 cmd.rlen = 0; 622 ret = si2168_cmd_execute(client, &cmd); 623 if (ret) 624 goto err; 625 626 return 0; 627 err: 628 dev_dbg(&client->dev, "failed=%d\n", ret); 629 return ret; 630 } 631 632 static int si2168_deselect(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 /* close I2C gate */ 639 memcpy(cmd.args, "\xc0\x0d\x00", 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 const struct dvb_frontend_ops si2168_ops = { 653 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 654 .info = { 655 .name = "Silicon Labs Si2168", 656 .symbol_rate_min = 1000000, 657 .symbol_rate_max = 7200000, 658 .caps = FE_CAN_FEC_1_2 | 659 FE_CAN_FEC_2_3 | 660 FE_CAN_FEC_3_4 | 661 FE_CAN_FEC_5_6 | 662 FE_CAN_FEC_7_8 | 663 FE_CAN_FEC_AUTO | 664 FE_CAN_QPSK | 665 FE_CAN_QAM_16 | 666 FE_CAN_QAM_32 | 667 FE_CAN_QAM_64 | 668 FE_CAN_QAM_128 | 669 FE_CAN_QAM_256 | 670 FE_CAN_QAM_AUTO | 671 FE_CAN_TRANSMISSION_MODE_AUTO | 672 FE_CAN_GUARD_INTERVAL_AUTO | 673 FE_CAN_HIERARCHY_AUTO | 674 FE_CAN_MUTE_TS | 675 FE_CAN_2G_MODULATION | 676 FE_CAN_MULTISTREAM 677 }, 678 679 .get_tune_settings = si2168_get_tune_settings, 680 681 .init = si2168_init, 682 .sleep = si2168_sleep, 683 684 .set_frontend = si2168_set_frontend, 685 686 .read_status = si2168_read_status, 687 }; 688 689 static int si2168_probe(struct i2c_client *client, 690 const struct i2c_device_id *id) 691 { 692 struct si2168_config *config = client->dev.platform_data; 693 struct si2168_dev *dev; 694 int ret; 695 struct si2168_cmd cmd; 696 697 dev_dbg(&client->dev, "\n"); 698 699 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 700 if (!dev) { 701 ret = -ENOMEM; 702 goto err; 703 } 704 705 i2c_set_clientdata(client, dev); 706 mutex_init(&dev->i2c_mutex); 707 708 /* Initialize */ 709 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 710 cmd.wlen = 13; 711 cmd.rlen = 0; 712 ret = si2168_cmd_execute(client, &cmd); 713 if (ret) 714 goto err_kfree; 715 716 /* Power up */ 717 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 718 cmd.wlen = 8; 719 cmd.rlen = 1; 720 ret = si2168_cmd_execute(client, &cmd); 721 if (ret) 722 goto err_kfree; 723 724 /* Query chip revision */ 725 memcpy(cmd.args, "\x02", 1); 726 cmd.wlen = 1; 727 cmd.rlen = 13; 728 ret = si2168_cmd_execute(client, &cmd); 729 if (ret) 730 goto err_kfree; 731 732 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | 733 cmd.args[3] << 8 | cmd.args[4] << 0; 734 735 switch (dev->chip_id) { 736 case SI2168_CHIP_ID_A20: 737 dev->firmware_name = SI2168_A20_FIRMWARE; 738 break; 739 case SI2168_CHIP_ID_A30: 740 dev->firmware_name = SI2168_A30_FIRMWARE; 741 break; 742 case SI2168_CHIP_ID_B40: 743 dev->firmware_name = SI2168_B40_FIRMWARE; 744 break; 745 case SI2168_CHIP_ID_D60: 746 dev->firmware_name = SI2168_D60_FIRMWARE; 747 break; 748 default: 749 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n", 750 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); 751 ret = -ENODEV; 752 goto err_kfree; 753 } 754 755 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 | 756 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0; 757 758 /* create mux i2c adapter for tuner */ 759 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 760 1, 0, I2C_MUX_LOCKED, 761 si2168_select, si2168_deselect); 762 if (!dev->muxc) { 763 ret = -ENOMEM; 764 goto err_kfree; 765 } 766 dev->muxc->priv = client; 767 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); 768 if (ret) 769 goto err_kfree; 770 771 /* create dvb_frontend */ 772 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 773 dev->fe.demodulator_priv = client; 774 *config->i2c_adapter = dev->muxc->adapter[0]; 775 *config->fe = &dev->fe; 776 dev->ts_mode = config->ts_mode; 777 dev->ts_clock_inv = config->ts_clock_inv; 778 dev->ts_clock_gapped = config->ts_clock_gapped; 779 780 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n", 781 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 782 dev->version >> 8 & 0xff); 783 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", 784 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, 785 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); 786 787 return 0; 788 err_kfree: 789 kfree(dev); 790 err: 791 dev_dbg(&client->dev, "failed=%d\n", ret); 792 return ret; 793 } 794 795 static int si2168_remove(struct i2c_client *client) 796 { 797 struct si2168_dev *dev = i2c_get_clientdata(client); 798 799 dev_dbg(&client->dev, "\n"); 800 801 i2c_mux_del_adapters(dev->muxc); 802 803 dev->fe.ops.release = NULL; 804 dev->fe.demodulator_priv = NULL; 805 806 kfree(dev); 807 808 return 0; 809 } 810 811 static const struct i2c_device_id si2168_id_table[] = { 812 {"si2168", 0}, 813 {} 814 }; 815 MODULE_DEVICE_TABLE(i2c, si2168_id_table); 816 817 static struct i2c_driver si2168_driver = { 818 .driver = { 819 .name = "si2168", 820 .suppress_bind_attrs = true, 821 }, 822 .probe = si2168_probe, 823 .remove = si2168_remove, 824 .id_table = si2168_id_table, 825 }; 826 827 module_i2c_driver(si2168_driver); 828 829 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 830 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 831 MODULE_LICENSE("GPL"); 832 MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 833 MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 834 MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 835 MODULE_FIRMWARE(SI2168_D60_FIRMWARE); 836