1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver 4 * 5 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> 6 */ 7 8 #include "si2157_priv.h" 9 10 static const struct dvb_tuner_ops si2157_ops; 11 12 static int tuner_lock_debug; 13 module_param(tuner_lock_debug, int, 0644); 14 MODULE_PARM_DESC(tuner_lock_debug, "if set, signal lock is briefly waited on after setting params"); 15 16 /* execute firmware command */ 17 static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd) 18 { 19 struct si2157_dev *dev = i2c_get_clientdata(client); 20 int ret; 21 unsigned long timeout; 22 23 mutex_lock(&dev->i2c_mutex); 24 25 if (cmd->wlen) { 26 /* write cmd and args for firmware */ 27 ret = i2c_master_send(client, cmd->args, cmd->wlen); 28 if (ret < 0) { 29 goto err_mutex_unlock; 30 } else if (ret != cmd->wlen) { 31 ret = -EREMOTEIO; 32 goto err_mutex_unlock; 33 } 34 } 35 36 if (cmd->rlen) { 37 /* wait cmd execution terminate */ 38 #define TIMEOUT 80 39 timeout = jiffies + msecs_to_jiffies(TIMEOUT); 40 while (!time_after(jiffies, timeout)) { 41 ret = i2c_master_recv(client, cmd->args, cmd->rlen); 42 if (ret < 0) { 43 goto err_mutex_unlock; 44 } else if (ret != cmd->rlen) { 45 ret = -EREMOTEIO; 46 goto err_mutex_unlock; 47 } 48 49 /* firmware ready? */ 50 if ((cmd->args[0] >> 7) & 0x01) 51 break; 52 } 53 54 dev_dbg(&client->dev, "cmd execution took %d ms, status=%x\n", 55 jiffies_to_msecs(jiffies) - 56 (jiffies_to_msecs(timeout) - TIMEOUT), 57 cmd->args[0]); 58 59 if (!((cmd->args[0] >> 7) & 0x01)) { 60 ret = -ETIMEDOUT; 61 goto err_mutex_unlock; 62 } 63 /* check error status bit */ 64 if (cmd->args[0] & 0x40) { 65 ret = -EAGAIN; 66 goto err_mutex_unlock; 67 } 68 } 69 70 mutex_unlock(&dev->i2c_mutex); 71 return 0; 72 73 err_mutex_unlock: 74 mutex_unlock(&dev->i2c_mutex); 75 dev_dbg(&client->dev, "failed=%d\n", ret); 76 return ret; 77 } 78 79 static const struct si2157_tuner_info si2157_tuners[] = { 80 { SI2141, false, 0x60, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE }, 81 { SI2141, false, 0x61, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE }, 82 { SI2146, false, 0x11, SI2146_11_FIRMWARE, NULL }, 83 { SI2147, false, 0x50, SI2147_50_FIRMWARE, NULL }, 84 { SI2148, true, 0x32, SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE }, 85 { SI2148, true, 0x33, SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE }, 86 { SI2157, false, 0x50, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE }, 87 { SI2158, false, 0x50, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE }, 88 { SI2158, false, 0x51, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE }, 89 { SI2177, false, 0x50, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE }, 90 }; 91 92 static int si2157_load_firmware(struct dvb_frontend *fe, 93 const char *fw_name) 94 { 95 struct i2c_client *client = fe->tuner_priv; 96 const struct firmware *fw; 97 int ret, len, remaining; 98 struct si2157_cmd cmd; 99 100 /* request the firmware, this will block and timeout */ 101 ret = firmware_request_nowarn(&fw, fw_name, &client->dev); 102 if (ret) 103 return ret; 104 105 /* firmware should be n chunks of 17 bytes */ 106 if (fw->size % 17 != 0) { 107 dev_err(&client->dev, "firmware file '%s' is invalid\n", 108 fw_name); 109 ret = -EINVAL; 110 goto err_release_firmware; 111 } 112 113 dev_info(&client->dev, "downloading firmware from file '%s'\n", 114 fw_name); 115 116 for (remaining = fw->size; remaining > 0; remaining -= 17) { 117 len = fw->data[fw->size - remaining]; 118 if (len > SI2157_ARGLEN) { 119 dev_err(&client->dev, "Bad firmware length\n"); 120 ret = -EINVAL; 121 goto err_release_firmware; 122 } 123 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); 124 cmd.wlen = len; 125 cmd.rlen = 1; 126 ret = si2157_cmd_execute(client, &cmd); 127 if (ret) { 128 dev_err(&client->dev, "firmware download failed %d\n", 129 ret); 130 goto err_release_firmware; 131 } 132 } 133 134 err_release_firmware: 135 release_firmware(fw); 136 137 return ret; 138 } 139 140 static int si2157_find_and_load_firmware(struct dvb_frontend *fe) 141 { 142 struct i2c_client *client = fe->tuner_priv; 143 struct si2157_dev *dev = i2c_get_clientdata(client); 144 const char *fw_alt_name = NULL; 145 unsigned char part_id, rom_id; 146 const char *fw_name = NULL; 147 struct si2157_cmd cmd; 148 bool required = true; 149 int ret, i; 150 151 if (dev->dont_load_firmware) { 152 dev_info(&client->dev, 153 "device is buggy, skipping firmware download\n"); 154 return 0; 155 } 156 157 /* query chip revision */ 158 memcpy(cmd.args, "\x02", 1); 159 cmd.wlen = 1; 160 cmd.rlen = 13; 161 ret = si2157_cmd_execute(client, &cmd); 162 if (ret) 163 return ret; 164 165 part_id = cmd.args[2]; 166 rom_id = cmd.args[12]; 167 168 for (i = 0; i < ARRAY_SIZE(si2157_tuners); i++) { 169 if (si2157_tuners[i].part_id != part_id) 170 continue; 171 required = si2157_tuners[i].required; 172 fw_alt_name = si2157_tuners[i].fw_alt_name; 173 174 /* Both part and rom ID match */ 175 if (si2157_tuners[i].rom_id == rom_id) { 176 fw_name = si2157_tuners[i].fw_name; 177 break; 178 } 179 } 180 181 if (!fw_name && !fw_alt_name) { 182 dev_err(&client->dev, 183 "unknown chip version Si21%d-%c%c%c ROM 0x%02x\n", 184 part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id); 185 return -EINVAL; 186 } 187 188 /* Update the part id based on device's report */ 189 dev->part_id = part_id; 190 191 dev_info(&client->dev, 192 "found a 'Silicon Labs Si21%d-%c%c%c ROM 0x%02x'\n", 193 part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id); 194 195 if (fw_name) 196 ret = si2157_load_firmware(fe, fw_name); 197 else 198 ret = -ENOENT; 199 200 /* Try alternate name, if any */ 201 if (ret == -ENOENT && fw_alt_name) 202 ret = si2157_load_firmware(fe, fw_alt_name); 203 204 if (ret == -ENOENT) { 205 if (!required) { 206 dev_info(&client->dev, "Using ROM firmware.\n"); 207 return 0; 208 } 209 dev_err(&client->dev, "Can't continue without a firmware.\n"); 210 } else if (ret < 0) { 211 dev_err(&client->dev, "error %d when loading firmware\n", ret); 212 } 213 return ret; 214 } 215 216 static int si2157_init(struct dvb_frontend *fe) 217 { 218 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 219 struct i2c_client *client = fe->tuner_priv; 220 struct si2157_dev *dev = i2c_get_clientdata(client); 221 unsigned int xtal_trim; 222 struct si2157_cmd cmd; 223 int ret; 224 225 dev_dbg(&client->dev, "\n"); 226 227 /* Try to get Xtal trim property, to verify tuner still running */ 228 memcpy(cmd.args, "\x15\x00\x02\x04", 4); 229 cmd.wlen = 4; 230 cmd.rlen = 4; 231 ret = si2157_cmd_execute(client, &cmd); 232 233 xtal_trim = cmd.args[2] | (cmd.args[3] << 8); 234 235 if (ret == 0 && xtal_trim < 16) 236 goto warm; 237 238 dev->if_frequency = 0; /* we no longer know current tuner state */ 239 240 /* power up */ 241 if (dev->part_id == SI2146) { 242 /* clock_mode = XTAL, clock_freq = 24MHz */ 243 memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9); 244 cmd.wlen = 9; 245 } else if (dev->part_id == SI2141) { 246 /* clock_mode: XTAL, xout enabled */ 247 memcpy(cmd.args, "\xc0\x00\x0d\x0e\x00\x01\x01\x01\x01\x03", 10); 248 cmd.wlen = 10; 249 } else { 250 memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15); 251 cmd.wlen = 15; 252 } 253 cmd.rlen = 1; 254 ret = si2157_cmd_execute(client, &cmd); 255 if (ret && (dev->part_id != SI2141 || ret != -EAGAIN)) 256 goto err; 257 258 /* Si2141 needs a wake up command */ 259 if (dev->part_id == SI2141) { 260 memcpy(cmd.args, "\xc0\x08\x01\x02\x00\x00\x01", 7); 261 cmd.wlen = 7; 262 ret = si2157_cmd_execute(client, &cmd); 263 if (ret) 264 goto err; 265 } 266 267 /* Try to load the firmware */ 268 ret = si2157_find_and_load_firmware(fe); 269 if (ret < 0) 270 goto err; 271 272 /* reboot the tuner with new firmware? */ 273 memcpy(cmd.args, "\x01\x01", 2); 274 cmd.wlen = 2; 275 cmd.rlen = 1; 276 ret = si2157_cmd_execute(client, &cmd); 277 if (ret) 278 goto err; 279 280 /* query firmware version */ 281 memcpy(cmd.args, "\x11", 1); 282 cmd.wlen = 1; 283 cmd.rlen = 10; 284 ret = si2157_cmd_execute(client, &cmd); 285 if (ret) 286 goto err; 287 288 dev_info(&client->dev, "firmware version: %c.%c.%d\n", 289 cmd.args[6], cmd.args[7], cmd.args[8]); 290 291 /* enable tuner status flags */ 292 memcpy(cmd.args, "\x14\x00\x01\x05\x01\x00", 6); 293 cmd.wlen = 6; 294 cmd.rlen = 1; 295 ret = si2157_cmd_execute(client, &cmd); 296 if (ret) 297 goto err; 298 299 memcpy(cmd.args, "\x14\x00\x01\x06\x01\x00", 6); 300 cmd.wlen = 6; 301 cmd.rlen = 1; 302 ret = si2157_cmd_execute(client, &cmd); 303 if (ret) 304 goto err; 305 306 memcpy(cmd.args, "\x14\x00\x01\x07\x01\x00", 6); 307 cmd.wlen = 6; 308 cmd.rlen = 1; 309 ret = si2157_cmd_execute(client, &cmd); 310 if (ret) 311 goto err; 312 warm: 313 /* init statistics in order signal app which are supported */ 314 c->strength.len = 1; 315 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 316 /* start statistics polling */ 317 schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(1000)); 318 319 dev->active = true; 320 return 0; 321 322 err: 323 dev_dbg(&client->dev, "failed=%d\n", ret); 324 return ret; 325 } 326 327 static int si2157_sleep(struct dvb_frontend *fe) 328 { 329 struct i2c_client *client = fe->tuner_priv; 330 struct si2157_dev *dev = i2c_get_clientdata(client); 331 int ret; 332 struct si2157_cmd cmd; 333 334 dev_dbg(&client->dev, "\n"); 335 336 dev->active = false; 337 338 /* stop statistics polling */ 339 cancel_delayed_work_sync(&dev->stat_work); 340 341 /* standby */ 342 memcpy(cmd.args, "\x16\x00", 2); 343 cmd.wlen = 2; 344 cmd.rlen = 1; 345 ret = si2157_cmd_execute(client, &cmd); 346 if (ret) 347 goto err; 348 349 return 0; 350 err: 351 dev_dbg(&client->dev, "failed=%d\n", ret); 352 return ret; 353 } 354 355 static int si2157_tune_wait(struct i2c_client *client, u8 is_digital) 356 { 357 #define TUN_TIMEOUT 40 358 #define DIG_TIMEOUT 30 359 #define ANALOG_TIMEOUT 150 360 struct si2157_dev *dev = i2c_get_clientdata(client); 361 int ret; 362 unsigned long timeout; 363 unsigned long start_time; 364 u8 wait_status; 365 u8 tune_lock_mask; 366 367 if (is_digital) 368 tune_lock_mask = 0x04; 369 else 370 tune_lock_mask = 0x02; 371 372 mutex_lock(&dev->i2c_mutex); 373 374 /* wait tuner command complete */ 375 start_time = jiffies; 376 timeout = start_time + msecs_to_jiffies(TUN_TIMEOUT); 377 while (1) { 378 ret = i2c_master_recv(client, &wait_status, 379 sizeof(wait_status)); 380 if (ret < 0) { 381 goto err_mutex_unlock; 382 } else if (ret != sizeof(wait_status)) { 383 ret = -EREMOTEIO; 384 goto err_mutex_unlock; 385 } 386 387 if (time_after(jiffies, timeout)) 388 break; 389 390 /* tuner done? */ 391 if ((wait_status & 0x81) == 0x81) 392 break; 393 usleep_range(5000, 10000); 394 } 395 396 dev_dbg(&client->dev, "tuning took %d ms, status=0x%x\n", 397 jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time), 398 wait_status); 399 400 /* if we tuned ok, wait a bit for tuner lock */ 401 if (tuner_lock_debug && (wait_status & 0x81) == 0x81) { 402 if (is_digital) 403 timeout = jiffies + msecs_to_jiffies(DIG_TIMEOUT); 404 else 405 timeout = jiffies + msecs_to_jiffies(ANALOG_TIMEOUT); 406 407 while (!time_after(jiffies, timeout)) { 408 ret = i2c_master_recv(client, &wait_status, 409 sizeof(wait_status)); 410 if (ret < 0) { 411 goto err_mutex_unlock; 412 } else if (ret != sizeof(wait_status)) { 413 ret = -EREMOTEIO; 414 goto err_mutex_unlock; 415 } 416 417 /* tuner locked? */ 418 if (wait_status & tune_lock_mask) 419 break; 420 usleep_range(5000, 10000); 421 } 422 423 dev_dbg(&client->dev, "tuning+lock took %d ms, status=0x%x\n", 424 jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time), 425 wait_status); 426 } 427 428 if ((wait_status & 0xc0) != 0x80) { 429 ret = -ETIMEDOUT; 430 goto err_mutex_unlock; 431 } 432 433 mutex_unlock(&dev->i2c_mutex); 434 return 0; 435 436 err_mutex_unlock: 437 mutex_unlock(&dev->i2c_mutex); 438 dev_err(&client->dev, "failed=%d\n", ret); 439 return ret; 440 } 441 442 static int si2157_set_params(struct dvb_frontend *fe) 443 { 444 struct i2c_client *client = fe->tuner_priv; 445 struct si2157_dev *dev = i2c_get_clientdata(client); 446 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 447 int ret; 448 struct si2157_cmd cmd; 449 u8 bandwidth, delivery_system; 450 u32 if_frequency = 5000000; 451 452 dev_dbg(&client->dev, 453 "delivery_system=%d frequency=%u bandwidth_hz=%u\n", 454 c->delivery_system, c->frequency, c->bandwidth_hz); 455 456 if (!dev->active) { 457 ret = -EAGAIN; 458 goto err; 459 } 460 461 if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000) 462 bandwidth = 0x09; 463 if (c->bandwidth_hz <= 6000000) 464 bandwidth = 0x06; 465 if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) 466 bandwidth = 0x10; 467 else if (c->bandwidth_hz <= 7000000) 468 bandwidth = 0x07; 469 else if (c->bandwidth_hz <= 8000000) 470 bandwidth = 0x08; 471 else 472 bandwidth = 0x0f; 473 474 switch (c->delivery_system) { 475 case SYS_ATSC: 476 delivery_system = 0x00; 477 if_frequency = 3250000; 478 break; 479 case SYS_DVBC_ANNEX_B: 480 delivery_system = 0x10; 481 if_frequency = 4000000; 482 break; 483 case SYS_DVBT: 484 case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */ 485 delivery_system = 0x20; 486 break; 487 case SYS_DVBC_ANNEX_A: 488 delivery_system = 0x30; 489 break; 490 case SYS_ISDBT: 491 delivery_system = 0x40; 492 break; 493 case SYS_DTMB: 494 delivery_system = 0x60; 495 break; 496 default: 497 ret = -EINVAL; 498 goto err; 499 } 500 501 memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6); 502 cmd.args[4] = delivery_system | bandwidth; 503 if (dev->inversion) 504 cmd.args[5] = 0x01; 505 cmd.wlen = 6; 506 cmd.rlen = 4; 507 ret = si2157_cmd_execute(client, &cmd); 508 if (ret) 509 goto err; 510 511 /* On SI2146, set DTV AGC source to DLIF_AGC_3DB */ 512 if (dev->part_id == SI2146) 513 memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6); 514 else 515 memcpy(cmd.args, "\x14\x00\x02\x07\x00\x00", 6); 516 cmd.args[4] = dev->if_port; 517 cmd.wlen = 6; 518 cmd.rlen = 4; 519 ret = si2157_cmd_execute(client, &cmd); 520 if (ret) 521 goto err; 522 523 /* set digital if frequency if needed */ 524 if (if_frequency != dev->if_frequency) { 525 memcpy(cmd.args, "\x14\x00\x06\x07", 4); 526 cmd.args[4] = (if_frequency / 1000) & 0xff; 527 cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff; 528 cmd.wlen = 6; 529 cmd.rlen = 4; 530 ret = si2157_cmd_execute(client, &cmd); 531 if (ret) 532 goto err; 533 534 dev->if_frequency = if_frequency; 535 } 536 537 /* set digital frequency */ 538 memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8); 539 cmd.args[4] = (c->frequency >> 0) & 0xff; 540 cmd.args[5] = (c->frequency >> 8) & 0xff; 541 cmd.args[6] = (c->frequency >> 16) & 0xff; 542 cmd.args[7] = (c->frequency >> 24) & 0xff; 543 cmd.wlen = 8; 544 cmd.rlen = 1; 545 ret = si2157_cmd_execute(client, &cmd); 546 if (ret) 547 goto err; 548 549 dev->bandwidth = bandwidth; 550 dev->frequency = c->frequency; 551 552 si2157_tune_wait(client, 1); /* wait to complete, ignore any errors */ 553 554 return 0; 555 err: 556 dev->bandwidth = 0; 557 dev->frequency = 0; 558 dev->if_frequency = 0; 559 dev_dbg(&client->dev, "failed=%d\n", ret); 560 return ret; 561 } 562 563 static int si2157_set_analog_params(struct dvb_frontend *fe, 564 struct analog_parameters *params) 565 { 566 struct i2c_client *client = fe->tuner_priv; 567 struct si2157_dev *dev = i2c_get_clientdata(client); 568 char *std; /* for debugging */ 569 int ret; 570 struct si2157_cmd cmd; 571 u32 bandwidth = 0; 572 u32 if_frequency = 0; 573 u32 freq = 0; 574 u64 tmp_lval = 0; 575 u8 system = 0; 576 u8 color = 0; /* 0=NTSC/PAL, 0x10=SECAM */ 577 u8 invert_analog = 1; /* analog tuner spectrum; 0=normal, 1=inverted */ 578 579 if (!SUPPORTS_ATV_IF(dev)) { 580 dev_info(&client->dev, "Analog tuning not supported yet for Si21%d\n", 581 dev->part_id); 582 ret = -EINVAL; 583 goto err; 584 } 585 586 if (!dev->active) 587 si2157_init(fe); 588 589 if (!dev->active) { 590 ret = -EAGAIN; 591 goto err; 592 } 593 if (params->mode == V4L2_TUNER_RADIO) { 594 /* 595 * std = "fm"; 596 * bandwidth = 1700000; //best can do for FM, AGC will be a mess though 597 * if_frequency = 1250000; //HVR-225x(saa7164), HVR-12xx(cx23885) 598 * if_frequency = 6600000; //HVR-9xx(cx231xx) 599 * if_frequency = 5500000; //HVR-19xx(pvrusb2) 600 */ 601 dev_err(&client->dev, "si2157 does not currently support FM radio\n"); 602 ret = -EINVAL; 603 goto err; 604 } 605 tmp_lval = params->frequency * 625LL; 606 do_div(tmp_lval, 10); /* convert to HZ */ 607 freq = (u32)tmp_lval; 608 609 if (freq < 1000000) /* is freq in KHz */ 610 freq = freq * 1000; 611 dev->frequency = freq; 612 613 /* if_frequency values based on tda187271C2 */ 614 if (params->std & (V4L2_STD_B | V4L2_STD_GH)) { 615 if (freq >= 470000000) { 616 std = "palGH"; 617 bandwidth = 8000000; 618 if_frequency = 6000000; 619 system = 1; 620 if (params->std & 621 (V4L2_STD_SECAM_G | V4L2_STD_SECAM_H)) { 622 std = "secamGH"; 623 color = 0x10; 624 } 625 } else { 626 std = "palB"; 627 bandwidth = 7000000; 628 if_frequency = 6000000; 629 system = 0; 630 if (params->std & V4L2_STD_SECAM_B) { 631 std = "secamB"; 632 color = 0x10; 633 } 634 } 635 } else if (params->std & V4L2_STD_MN) { 636 std = "MN"; 637 bandwidth = 6000000; 638 if_frequency = 5400000; 639 system = 2; 640 } else if (params->std & V4L2_STD_PAL_I) { 641 std = "palI"; 642 bandwidth = 8000000; 643 if_frequency = 7250000; /* TODO: does not work yet */ 644 system = 4; 645 } else if (params->std & V4L2_STD_DK) { 646 std = "palDK"; 647 bandwidth = 8000000; 648 if_frequency = 6900000; /* TODO: does not work yet */ 649 system = 5; 650 if (params->std & V4L2_STD_SECAM_DK) { 651 std = "secamDK"; 652 color = 0x10; 653 } 654 } else if (params->std & V4L2_STD_SECAM_L) { 655 std = "secamL"; 656 bandwidth = 8000000; 657 if_frequency = 6750000; /* TODO: untested */ 658 system = 6; 659 color = 0x10; 660 } else if (params->std & V4L2_STD_SECAM_LC) { 661 std = "secamL'"; 662 bandwidth = 7000000; 663 if_frequency = 1250000; /* TODO: untested */ 664 system = 7; 665 color = 0x10; 666 } else { 667 std = "unknown"; 668 } 669 /* calc channel center freq */ 670 freq = freq - 1250000 + (bandwidth / 2); 671 672 dev_dbg(&client->dev, 673 "mode=%d system=%u std='%s' params->frequency=%u center freq=%u if=%u bandwidth=%u\n", 674 params->mode, system, std, params->frequency, 675 freq, if_frequency, bandwidth); 676 677 /* set analog IF port */ 678 memcpy(cmd.args, "\x14\x00\x03\x06\x08\x02", 6); 679 /* in using dev->if_port, we assume analog and digital IF's */ 680 /* are always on different ports */ 681 /* assumes if_port definition is 0 or 1 for digital out */ 682 cmd.args[4] = (dev->if_port == 1) ? 8 : 10; 683 /* Analog AGC assumed external */ 684 cmd.args[5] = (dev->if_port == 1) ? 2 : 1; 685 cmd.wlen = 6; 686 cmd.rlen = 4; 687 ret = si2157_cmd_execute(client, &cmd); 688 if (ret) 689 goto err; 690 691 /* set analog IF output config */ 692 memcpy(cmd.args, "\x14\x00\x0d\x06\x94\x64", 6); 693 cmd.wlen = 6; 694 cmd.rlen = 4; 695 ret = si2157_cmd_execute(client, &cmd); 696 if (ret) 697 goto err; 698 699 /* make this distinct from a digital IF */ 700 dev->if_frequency = if_frequency | 1; 701 702 /* calc and set tuner analog if center frequency */ 703 if_frequency = if_frequency + 1250000 - (bandwidth / 2); 704 dev_dbg(&client->dev, "IF Ctr freq=%d\n", if_frequency); 705 706 memcpy(cmd.args, "\x14\x00\x0C\x06", 4); 707 cmd.args[4] = (if_frequency / 1000) & 0xff; 708 cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff; 709 cmd.wlen = 6; 710 cmd.rlen = 4; 711 ret = si2157_cmd_execute(client, &cmd); 712 if (ret) 713 goto err; 714 715 /* set analog AGC config */ 716 memcpy(cmd.args, "\x14\x00\x07\x06\x32\xc8", 6); 717 cmd.wlen = 6; 718 cmd.rlen = 4; 719 ret = si2157_cmd_execute(client, &cmd); 720 if (ret) 721 goto err; 722 723 /* set analog video mode */ 724 memcpy(cmd.args, "\x14\x00\x04\x06\x00\x00", 6); 725 cmd.args[4] = system | color; 726 /* can use dev->inversion if assumed applies to both digital/analog */ 727 if (invert_analog) 728 cmd.args[5] |= 0x02; 729 cmd.wlen = 6; 730 cmd.rlen = 1; 731 ret = si2157_cmd_execute(client, &cmd); 732 if (ret) 733 goto err; 734 735 /* set analog frequency */ 736 memcpy(cmd.args, "\x41\x01\x00\x00\x00\x00\x00\x00", 8); 737 cmd.args[4] = (freq >> 0) & 0xff; 738 cmd.args[5] = (freq >> 8) & 0xff; 739 cmd.args[6] = (freq >> 16) & 0xff; 740 cmd.args[7] = (freq >> 24) & 0xff; 741 cmd.wlen = 8; 742 cmd.rlen = 1; 743 ret = si2157_cmd_execute(client, &cmd); 744 if (ret) 745 goto err; 746 747 dev->bandwidth = bandwidth; 748 749 si2157_tune_wait(client, 0); /* wait to complete, ignore any errors */ 750 751 return 0; 752 err: 753 dev->bandwidth = 0; 754 dev->frequency = 0; 755 dev->if_frequency = 0; 756 dev_dbg(&client->dev, "failed=%d\n", ret); 757 return ret; 758 } 759 760 static int si2157_get_frequency(struct dvb_frontend *fe, u32 *frequency) 761 { 762 struct i2c_client *client = fe->tuner_priv; 763 struct si2157_dev *dev = i2c_get_clientdata(client); 764 765 *frequency = dev->frequency; 766 dev_dbg(&client->dev, "freq=%u\n", dev->frequency); 767 return 0; 768 } 769 770 static int si2157_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) 771 { 772 struct i2c_client *client = fe->tuner_priv; 773 struct si2157_dev *dev = i2c_get_clientdata(client); 774 775 *bandwidth = dev->bandwidth; 776 dev_dbg(&client->dev, "bandwidth=%u\n", dev->bandwidth); 777 return 0; 778 } 779 780 static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) 781 { 782 struct i2c_client *client = fe->tuner_priv; 783 struct si2157_dev *dev = i2c_get_clientdata(client); 784 785 *frequency = dev->if_frequency & ~1; /* strip analog IF indicator bit */ 786 dev_dbg(&client->dev, "if_frequency=%u\n", *frequency); 787 return 0; 788 } 789 790 static int si2157_get_rf_strength(struct dvb_frontend *fe, u16 *rssi) 791 { 792 struct i2c_client *client = fe->tuner_priv; 793 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 794 struct si2157_cmd cmd; 795 int ret; 796 int strength; 797 798 dev_dbg(&client->dev, "\n"); 799 800 memcpy(cmd.args, "\x42\x00", 2); 801 cmd.wlen = 2; 802 cmd.rlen = 12; 803 ret = si2157_cmd_execute(client, &cmd); 804 if (ret) 805 goto err; 806 807 c->strength.stat[0].scale = FE_SCALE_DECIBEL; 808 c->strength.stat[0].svalue = (s8)cmd.args[3] * 1000; 809 810 /* normalize values based on Silicon Labs reference 811 * add 100, then anything > 80 is 100% signal 812 */ 813 strength = (s8)cmd.args[3] + 100; 814 strength = clamp_val(strength, 0, 80); 815 *rssi = (u16)(strength * 0xffff / 80); 816 817 dev_dbg(&client->dev, "strength=%d rssi=%u\n", 818 (s8)cmd.args[3], *rssi); 819 820 return 0; 821 err: 822 dev_dbg(&client->dev, "failed=%d\n", ret); 823 return ret; 824 } 825 826 static const struct dvb_tuner_ops si2157_ops = { 827 .info = { 828 .name = "Silicon Labs Si2141/Si2146/2147/2148/2157/2158", 829 .frequency_min_hz = 42 * MHz, 830 .frequency_max_hz = 870 * MHz, 831 }, 832 833 .init = si2157_init, 834 .sleep = si2157_sleep, 835 .set_params = si2157_set_params, 836 .set_analog_params = si2157_set_analog_params, 837 .get_frequency = si2157_get_frequency, 838 .get_bandwidth = si2157_get_bandwidth, 839 .get_if_frequency = si2157_get_if_frequency, 840 841 .get_rf_strength = si2157_get_rf_strength, 842 }; 843 844 static void si2157_stat_work(struct work_struct *work) 845 { 846 struct si2157_dev *dev = container_of(work, struct si2157_dev, stat_work.work); 847 struct dvb_frontend *fe = dev->fe; 848 struct i2c_client *client = fe->tuner_priv; 849 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 850 struct si2157_cmd cmd; 851 int ret; 852 853 dev_dbg(&client->dev, "\n"); 854 855 memcpy(cmd.args, "\x42\x00", 2); 856 cmd.wlen = 2; 857 cmd.rlen = 12; 858 ret = si2157_cmd_execute(client, &cmd); 859 if (ret) 860 goto err; 861 862 c->strength.stat[0].scale = FE_SCALE_DECIBEL; 863 c->strength.stat[0].svalue = (s8) cmd.args[3] * 1000; 864 865 schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); 866 return; 867 err: 868 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 869 dev_dbg(&client->dev, "failed=%d\n", ret); 870 } 871 872 static int si2157_probe(struct i2c_client *client, 873 const struct i2c_device_id *id) 874 { 875 struct si2157_config *cfg = client->dev.platform_data; 876 struct dvb_frontend *fe = cfg->fe; 877 struct si2157_dev *dev; 878 struct si2157_cmd cmd; 879 int ret; 880 881 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 882 if (!dev) { 883 ret = -ENOMEM; 884 dev_err(&client->dev, "kzalloc() failed\n"); 885 goto err; 886 } 887 888 i2c_set_clientdata(client, dev); 889 dev->fe = cfg->fe; 890 dev->inversion = cfg->inversion; 891 dev->dont_load_firmware = cfg->dont_load_firmware; 892 dev->if_port = cfg->if_port; 893 dev->part_id = (u8)id->driver_data; 894 dev->if_frequency = 5000000; /* default value of property 0x0706 */ 895 mutex_init(&dev->i2c_mutex); 896 INIT_DELAYED_WORK(&dev->stat_work, si2157_stat_work); 897 898 /* check if the tuner is there */ 899 cmd.wlen = 0; 900 cmd.rlen = 1; 901 ret = si2157_cmd_execute(client, &cmd); 902 if (ret && ret != -EAGAIN) 903 goto err_kfree; 904 905 memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops)); 906 fe->tuner_priv = client; 907 908 #ifdef CONFIG_MEDIA_CONTROLLER 909 if (cfg->mdev) { 910 dev->mdev = cfg->mdev; 911 912 dev->ent.name = KBUILD_MODNAME; 913 dev->ent.function = MEDIA_ENT_F_TUNER; 914 915 dev->pad[SI2157_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; 916 dev->pad[SI2157_PAD_RF_INPUT].sig_type = PAD_SIGNAL_ANALOG; 917 dev->pad[SI2157_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; 918 dev->pad[SI2157_PAD_VID_OUT].sig_type = PAD_SIGNAL_ANALOG; 919 dev->pad[SI2157_PAD_AUD_OUT].flags = MEDIA_PAD_FL_SOURCE; 920 dev->pad[SI2157_PAD_AUD_OUT].sig_type = PAD_SIGNAL_AUDIO; 921 922 ret = media_entity_pads_init(&dev->ent, SI2157_NUM_PADS, 923 &dev->pad[0]); 924 925 if (ret) 926 goto err_kfree; 927 928 ret = media_device_register_entity(cfg->mdev, &dev->ent); 929 if (ret) { 930 media_entity_cleanup(&dev->ent); 931 goto err_kfree; 932 } 933 } 934 #endif 935 936 dev_info(&client->dev, "Silicon Labs Si21%d successfully attached\n", 937 dev->part_id); 938 939 return 0; 940 941 err_kfree: 942 kfree(dev); 943 err: 944 dev_dbg(&client->dev, "failed=%d\n", ret); 945 return ret; 946 } 947 948 static int si2157_remove(struct i2c_client *client) 949 { 950 struct si2157_dev *dev = i2c_get_clientdata(client); 951 struct dvb_frontend *fe = dev->fe; 952 953 dev_dbg(&client->dev, "\n"); 954 955 /* stop statistics polling */ 956 cancel_delayed_work_sync(&dev->stat_work); 957 958 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 959 if (dev->mdev) 960 media_device_unregister_entity(&dev->ent); 961 #endif 962 963 memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); 964 fe->tuner_priv = NULL; 965 kfree(dev); 966 967 return 0; 968 } 969 970 /* 971 * The part_id used here will only be used on buggy devices that don't 972 * accept firmware uploads. Non-buggy devices should just use "si2157" for 973 * all SiLabs TER tuners, as the driver should auto-detect it. 974 */ 975 static const struct i2c_device_id si2157_id_table[] = { 976 {"si2157", SI2157}, 977 {"si2146", SI2146}, 978 {"si2141", SI2141}, 979 {"si2177", SI2177}, 980 {} 981 }; 982 MODULE_DEVICE_TABLE(i2c, si2157_id_table); 983 984 static struct i2c_driver si2157_driver = { 985 .driver = { 986 .name = "si2157", 987 .suppress_bind_attrs = true, 988 }, 989 .probe = si2157_probe, 990 .remove = si2157_remove, 991 .id_table = si2157_id_table, 992 }; 993 994 module_i2c_driver(si2157_driver); 995 996 MODULE_DESCRIPTION("Silicon Labs Si2141/Si2146/2147/2148/2157/2158 silicon tuner driver"); 997 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 998 MODULE_LICENSE("GPL"); 999 MODULE_FIRMWARE(SI2158_A20_FIRMWARE); 1000 MODULE_FIRMWARE(SI2141_A10_FIRMWARE); 1001 MODULE_FIRMWARE(SI2157_A30_FIRMWARE); 1002 MODULE_FIRMWARE(SI2141_60_FIRMWARE); 1003 MODULE_FIRMWARE(SI2141_61_FIRMWARE); 1004 MODULE_FIRMWARE(SI2146_11_FIRMWARE); 1005 MODULE_FIRMWARE(SI2147_50_FIRMWARE); 1006 MODULE_FIRMWARE(SI2148_32_FIRMWARE); 1007 MODULE_FIRMWARE(SI2148_33_FIRMWARE); 1008 MODULE_FIRMWARE(SI2157_50_FIRMWARE); 1009 MODULE_FIRMWARE(SI2158_50_FIRMWARE); 1010 MODULE_FIRMWARE(SI2158_51_FIRMWARE); 1011 MODULE_FIRMWARE(SI2177_50_FIRMWARE); 1012