1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Panasonic MN88472 DVB-T/T2/C demodulator driver 4 * 5 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> 6 */ 7 8 #include "mn88472_priv.h" 9 10 static int mn88472_get_tune_settings(struct dvb_frontend *fe, 11 struct dvb_frontend_tune_settings *s) 12 { 13 s->min_delay_ms = 1000; 14 return 0; 15 } 16 17 static int mn88472_read_status(struct dvb_frontend *fe, enum fe_status *status) 18 { 19 struct i2c_client *client = fe->demodulator_priv; 20 struct mn88472_dev *dev = i2c_get_clientdata(client); 21 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 22 int ret, i, stmp; 23 unsigned int utmp, utmp1, utmp2; 24 u8 buf[5]; 25 26 if (!dev->active) { 27 ret = -EAGAIN; 28 goto err; 29 } 30 31 switch (c->delivery_system) { 32 case SYS_DVBT: 33 ret = regmap_read(dev->regmap[0], 0x7f, &utmp); 34 if (ret) 35 goto err; 36 if ((utmp & 0x0f) >= 0x09) 37 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | 38 FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; 39 else 40 *status = 0; 41 break; 42 case SYS_DVBT2: 43 ret = regmap_read(dev->regmap[2], 0x92, &utmp); 44 if (ret) 45 goto err; 46 if ((utmp & 0x0f) >= 0x0d) 47 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | 48 FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; 49 else if ((utmp & 0x0f) >= 0x0a) 50 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | 51 FE_HAS_VITERBI; 52 else if ((utmp & 0x0f) >= 0x07) 53 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 54 else 55 *status = 0; 56 break; 57 case SYS_DVBC_ANNEX_A: 58 ret = regmap_read(dev->regmap[1], 0x84, &utmp); 59 if (ret) 60 goto err; 61 if ((utmp & 0x0f) >= 0x08) 62 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | 63 FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; 64 else 65 *status = 0; 66 break; 67 default: 68 ret = -EINVAL; 69 goto err; 70 } 71 72 /* Signal strength */ 73 if (*status & FE_HAS_SIGNAL) { 74 for (i = 0; i < 2; i++) { 75 ret = regmap_bulk_read(dev->regmap[2], 0x8e + i, 76 &buf[i], 1); 77 if (ret) 78 goto err; 79 } 80 81 utmp1 = buf[0] << 8 | buf[1] << 0 | buf[0] >> 2; 82 dev_dbg(&client->dev, "strength=%u\n", utmp1); 83 84 c->strength.stat[0].scale = FE_SCALE_RELATIVE; 85 c->strength.stat[0].uvalue = utmp1; 86 } else { 87 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 88 } 89 90 /* CNR */ 91 if (*status & FE_HAS_VITERBI && c->delivery_system == SYS_DVBT) { 92 /* DVB-T CNR */ 93 ret = regmap_bulk_read(dev->regmap[0], 0x9c, buf, 2); 94 if (ret) 95 goto err; 96 97 utmp = buf[0] << 8 | buf[1] << 0; 98 if (utmp) { 99 /* CNR[dB]: 10 * log10(65536 / value) + 2 */ 100 /* log10(65536) = 80807124, 0.2 = 3355443 */ 101 stmp = ((u64)80807124 - intlog10(utmp) + 3355443) 102 * 10000 >> 24; 103 104 dev_dbg(&client->dev, "cnr=%d value=%u\n", stmp, utmp); 105 } else { 106 stmp = 0; 107 } 108 109 c->cnr.stat[0].svalue = stmp; 110 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 111 } else if (*status & FE_HAS_VITERBI && 112 c->delivery_system == SYS_DVBT2) { 113 /* DVB-T2 CNR */ 114 for (i = 0; i < 3; i++) { 115 ret = regmap_bulk_read(dev->regmap[2], 0xbc + i, 116 &buf[i], 1); 117 if (ret) 118 goto err; 119 } 120 121 utmp = buf[1] << 8 | buf[2] << 0; 122 utmp1 = (buf[0] >> 2) & 0x01; /* 0=SISO, 1=MISO */ 123 if (utmp) { 124 if (utmp1) { 125 /* CNR[dB]: 10 * log10(16384 / value) - 6 */ 126 /* log10(16384) = 70706234, 0.6 = 10066330 */ 127 stmp = ((u64)70706234 - intlog10(utmp) 128 - 10066330) * 10000 >> 24; 129 dev_dbg(&client->dev, "cnr=%d value=%u MISO\n", 130 stmp, utmp); 131 } else { 132 /* CNR[dB]: 10 * log10(65536 / value) + 2 */ 133 /* log10(65536) = 80807124, 0.2 = 3355443 */ 134 stmp = ((u64)80807124 - intlog10(utmp) 135 + 3355443) * 10000 >> 24; 136 137 dev_dbg(&client->dev, "cnr=%d value=%u SISO\n", 138 stmp, utmp); 139 } 140 } else { 141 stmp = 0; 142 } 143 144 c->cnr.stat[0].svalue = stmp; 145 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 146 } else if (*status & FE_HAS_VITERBI && 147 c->delivery_system == SYS_DVBC_ANNEX_A) { 148 /* DVB-C CNR */ 149 ret = regmap_bulk_read(dev->regmap[1], 0xa1, buf, 4); 150 if (ret) 151 goto err; 152 153 utmp1 = buf[0] << 8 | buf[1] << 0; /* signal */ 154 utmp2 = buf[2] << 8 | buf[3] << 0; /* noise */ 155 if (utmp1 && utmp2) { 156 /* CNR[dB]: 10 * log10(8 * (signal / noise)) */ 157 /* log10(8) = 15151336 */ 158 stmp = ((u64)15151336 + intlog10(utmp1) 159 - intlog10(utmp2)) * 10000 >> 24; 160 161 dev_dbg(&client->dev, "cnr=%d signal=%u noise=%u\n", 162 stmp, utmp1, utmp2); 163 } else { 164 stmp = 0; 165 } 166 167 c->cnr.stat[0].svalue = stmp; 168 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 169 } else { 170 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 171 } 172 173 /* PER */ 174 if (*status & FE_HAS_SYNC) { 175 ret = regmap_bulk_read(dev->regmap[0], 0xe1, buf, 4); 176 if (ret) 177 goto err; 178 179 utmp1 = buf[0] << 8 | buf[1] << 0; 180 utmp2 = buf[2] << 8 | buf[3] << 0; 181 dev_dbg(&client->dev, "block_error=%u block_count=%u\n", 182 utmp1, utmp2); 183 184 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 185 c->block_error.stat[0].uvalue += utmp1; 186 c->block_count.stat[0].scale = FE_SCALE_COUNTER; 187 c->block_count.stat[0].uvalue += utmp2; 188 } else { 189 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 190 c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 191 } 192 193 return 0; 194 err: 195 dev_dbg(&client->dev, "failed=%d\n", ret); 196 return ret; 197 } 198 199 static int mn88472_set_frontend(struct dvb_frontend *fe) 200 { 201 struct i2c_client *client = fe->demodulator_priv; 202 struct mn88472_dev *dev = i2c_get_clientdata(client); 203 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 204 int ret, i; 205 unsigned int utmp; 206 u32 if_frequency; 207 u8 buf[3], delivery_system_val, bandwidth_val, *bandwidth_vals_ptr; 208 u8 reg_bank0_b4_val, reg_bank0_cd_val, reg_bank0_d4_val; 209 u8 reg_bank0_d6_val; 210 211 dev_dbg(&client->dev, 212 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n", 213 c->delivery_system, c->modulation, c->frequency, 214 c->bandwidth_hz, c->symbol_rate, c->inversion, c->stream_id); 215 216 if (!dev->active) { 217 ret = -EAGAIN; 218 goto err; 219 } 220 221 switch (c->delivery_system) { 222 case SYS_DVBT: 223 delivery_system_val = 0x02; 224 reg_bank0_b4_val = 0x00; 225 reg_bank0_cd_val = 0x1f; 226 reg_bank0_d4_val = 0x0a; 227 reg_bank0_d6_val = 0x48; 228 break; 229 case SYS_DVBT2: 230 delivery_system_val = 0x03; 231 reg_bank0_b4_val = 0xf6; 232 reg_bank0_cd_val = 0x01; 233 reg_bank0_d4_val = 0x09; 234 reg_bank0_d6_val = 0x46; 235 break; 236 case SYS_DVBC_ANNEX_A: 237 delivery_system_val = 0x04; 238 reg_bank0_b4_val = 0x00; 239 reg_bank0_cd_val = 0x17; 240 reg_bank0_d4_val = 0x09; 241 reg_bank0_d6_val = 0x48; 242 break; 243 default: 244 ret = -EINVAL; 245 goto err; 246 } 247 248 switch (c->delivery_system) { 249 case SYS_DVBT: 250 case SYS_DVBT2: 251 switch (c->bandwidth_hz) { 252 case 5000000: 253 bandwidth_vals_ptr = "\xe5\x99\x9a\x1b\xa9\x1b\xa9"; 254 bandwidth_val = 0x03; 255 break; 256 case 6000000: 257 bandwidth_vals_ptr = "\xbf\x55\x55\x15\x6b\x15\x6b"; 258 bandwidth_val = 0x02; 259 break; 260 case 7000000: 261 bandwidth_vals_ptr = "\xa4\x00\x00\x0f\x2c\x0f\x2c"; 262 bandwidth_val = 0x01; 263 break; 264 case 8000000: 265 bandwidth_vals_ptr = "\x8f\x80\x00\x08\xee\x08\xee"; 266 bandwidth_val = 0x00; 267 break; 268 default: 269 ret = -EINVAL; 270 goto err; 271 } 272 break; 273 case SYS_DVBC_ANNEX_A: 274 bandwidth_vals_ptr = NULL; 275 bandwidth_val = 0x00; 276 break; 277 default: 278 break; 279 } 280 281 /* Program tuner */ 282 if (fe->ops.tuner_ops.set_params) { 283 ret = fe->ops.tuner_ops.set_params(fe); 284 if (ret) 285 goto err; 286 } 287 288 if (fe->ops.tuner_ops.get_if_frequency) { 289 ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); 290 if (ret) 291 goto err; 292 293 dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency); 294 } else { 295 ret = -EINVAL; 296 goto err; 297 } 298 299 ret = regmap_write(dev->regmap[2], 0x00, 0x66); 300 if (ret) 301 goto err; 302 ret = regmap_write(dev->regmap[2], 0x01, 0x00); 303 if (ret) 304 goto err; 305 ret = regmap_write(dev->regmap[2], 0x02, 0x01); 306 if (ret) 307 goto err; 308 ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val); 309 if (ret) 310 goto err; 311 ret = regmap_write(dev->regmap[2], 0x04, bandwidth_val); 312 if (ret) 313 goto err; 314 315 /* IF */ 316 utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, dev->clk); 317 buf[0] = (utmp >> 16) & 0xff; 318 buf[1] = (utmp >> 8) & 0xff; 319 buf[2] = (utmp >> 0) & 0xff; 320 for (i = 0; i < 3; i++) { 321 ret = regmap_write(dev->regmap[2], 0x10 + i, buf[i]); 322 if (ret) 323 goto err; 324 } 325 326 /* Bandwidth */ 327 if (bandwidth_vals_ptr) { 328 for (i = 0; i < 7; i++) { 329 ret = regmap_write(dev->regmap[2], 0x13 + i, 330 bandwidth_vals_ptr[i]); 331 if (ret) 332 goto err; 333 } 334 } 335 336 ret = regmap_write(dev->regmap[0], 0xb4, reg_bank0_b4_val); 337 if (ret) 338 goto err; 339 ret = regmap_write(dev->regmap[0], 0xcd, reg_bank0_cd_val); 340 if (ret) 341 goto err; 342 ret = regmap_write(dev->regmap[0], 0xd4, reg_bank0_d4_val); 343 if (ret) 344 goto err; 345 ret = regmap_write(dev->regmap[0], 0xd6, reg_bank0_d6_val); 346 if (ret) 347 goto err; 348 349 switch (c->delivery_system) { 350 case SYS_DVBT: 351 ret = regmap_write(dev->regmap[0], 0x07, 0x26); 352 if (ret) 353 goto err; 354 ret = regmap_write(dev->regmap[0], 0x00, 0xba); 355 if (ret) 356 goto err; 357 ret = regmap_write(dev->regmap[0], 0x01, 0x13); 358 if (ret) 359 goto err; 360 break; 361 case SYS_DVBT2: 362 ret = regmap_write(dev->regmap[2], 0x2b, 0x13); 363 if (ret) 364 goto err; 365 ret = regmap_write(dev->regmap[2], 0x4f, 0x05); 366 if (ret) 367 goto err; 368 ret = regmap_write(dev->regmap[1], 0xf6, 0x05); 369 if (ret) 370 goto err; 371 ret = regmap_write(dev->regmap[2], 0x32, 372 (c->stream_id == NO_STREAM_ID_FILTER) ? 0 : 373 c->stream_id ); 374 if (ret) 375 goto err; 376 break; 377 case SYS_DVBC_ANNEX_A: 378 break; 379 default: 380 break; 381 } 382 383 /* Reset FSM */ 384 ret = regmap_write(dev->regmap[2], 0xf8, 0x9f); 385 if (ret) 386 goto err; 387 388 return 0; 389 err: 390 dev_dbg(&client->dev, "failed=%d\n", ret); 391 return ret; 392 } 393 394 static int mn88472_init(struct dvb_frontend *fe) 395 { 396 struct i2c_client *client = fe->demodulator_priv; 397 struct mn88472_dev *dev = i2c_get_clientdata(client); 398 int ret, len, rem; 399 unsigned int utmp; 400 const struct firmware *firmware; 401 const char *name = MN88472_FIRMWARE; 402 403 dev_dbg(&client->dev, "\n"); 404 405 /* Power up */ 406 ret = regmap_write(dev->regmap[2], 0x05, 0x00); 407 if (ret) 408 goto err; 409 ret = regmap_write(dev->regmap[2], 0x0b, 0x00); 410 if (ret) 411 goto err; 412 ret = regmap_write(dev->regmap[2], 0x0c, 0x00); 413 if (ret) 414 goto err; 415 416 /* Check if firmware is already running */ 417 ret = regmap_read(dev->regmap[0], 0xf5, &utmp); 418 if (ret) 419 goto err; 420 if (!(utmp & 0x01)) 421 goto warm; 422 423 ret = request_firmware(&firmware, name, &client->dev); 424 if (ret) { 425 dev_err(&client->dev, "firmware file '%s' not found\n", name); 426 goto err; 427 } 428 429 dev_info(&client->dev, "downloading firmware from file '%s'\n", name); 430 431 ret = regmap_write(dev->regmap[0], 0xf5, 0x03); 432 if (ret) 433 goto err_release_firmware; 434 435 for (rem = firmware->size; rem > 0; rem -= (dev->i2c_write_max - 1)) { 436 len = min(dev->i2c_write_max - 1, rem); 437 ret = regmap_bulk_write(dev->regmap[0], 0xf6, 438 &firmware->data[firmware->size - rem], 439 len); 440 if (ret) { 441 dev_err(&client->dev, "firmware download failed %d\n", 442 ret); 443 goto err_release_firmware; 444 } 445 } 446 447 /* Parity check of firmware */ 448 ret = regmap_read(dev->regmap[0], 0xf8, &utmp); 449 if (ret) 450 goto err_release_firmware; 451 if (utmp & 0x10) { 452 ret = -EINVAL; 453 dev_err(&client->dev, "firmware did not run\n"); 454 goto err_release_firmware; 455 } 456 457 ret = regmap_write(dev->regmap[0], 0xf5, 0x00); 458 if (ret) 459 goto err_release_firmware; 460 461 release_firmware(firmware); 462 warm: 463 /* TS config */ 464 switch (dev->ts_mode) { 465 case SERIAL_TS_MODE: 466 utmp = 0x1d; 467 break; 468 case PARALLEL_TS_MODE: 469 utmp = 0x00; 470 break; 471 default: 472 ret = -EINVAL; 473 goto err; 474 } 475 ret = regmap_write(dev->regmap[2], 0x08, utmp); 476 if (ret) 477 goto err; 478 479 switch (dev->ts_clk) { 480 case VARIABLE_TS_CLOCK: 481 utmp = 0xe3; 482 break; 483 case FIXED_TS_CLOCK: 484 utmp = 0xe1; 485 break; 486 default: 487 ret = -EINVAL; 488 goto err; 489 } 490 ret = regmap_write(dev->regmap[0], 0xd9, utmp); 491 if (ret) 492 goto err; 493 494 dev->active = true; 495 496 return 0; 497 err_release_firmware: 498 release_firmware(firmware); 499 err: 500 dev_dbg(&client->dev, "failed=%d\n", ret); 501 return ret; 502 } 503 504 static int mn88472_sleep(struct dvb_frontend *fe) 505 { 506 struct i2c_client *client = fe->demodulator_priv; 507 struct mn88472_dev *dev = i2c_get_clientdata(client); 508 int ret; 509 510 dev_dbg(&client->dev, "\n"); 511 512 /* Power down */ 513 ret = regmap_write(dev->regmap[2], 0x0c, 0x30); 514 if (ret) 515 goto err; 516 ret = regmap_write(dev->regmap[2], 0x0b, 0x30); 517 if (ret) 518 goto err; 519 ret = regmap_write(dev->regmap[2], 0x05, 0x3e); 520 if (ret) 521 goto err; 522 523 return 0; 524 err: 525 dev_dbg(&client->dev, "failed=%d\n", ret); 526 return ret; 527 } 528 529 static const struct dvb_frontend_ops mn88472_ops = { 530 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 531 .info = { 532 .name = "Panasonic MN88472", 533 .symbol_rate_min = 1000000, 534 .symbol_rate_max = 7200000, 535 .caps = FE_CAN_FEC_1_2 | 536 FE_CAN_FEC_2_3 | 537 FE_CAN_FEC_3_4 | 538 FE_CAN_FEC_5_6 | 539 FE_CAN_FEC_7_8 | 540 FE_CAN_FEC_AUTO | 541 FE_CAN_QPSK | 542 FE_CAN_QAM_16 | 543 FE_CAN_QAM_32 | 544 FE_CAN_QAM_64 | 545 FE_CAN_QAM_128 | 546 FE_CAN_QAM_256 | 547 FE_CAN_QAM_AUTO | 548 FE_CAN_TRANSMISSION_MODE_AUTO | 549 FE_CAN_GUARD_INTERVAL_AUTO | 550 FE_CAN_HIERARCHY_AUTO | 551 FE_CAN_MUTE_TS | 552 FE_CAN_2G_MODULATION | 553 FE_CAN_MULTISTREAM 554 }, 555 556 .get_tune_settings = mn88472_get_tune_settings, 557 558 .init = mn88472_init, 559 .sleep = mn88472_sleep, 560 561 .set_frontend = mn88472_set_frontend, 562 563 .read_status = mn88472_read_status, 564 }; 565 566 static struct dvb_frontend *mn88472_get_dvb_frontend(struct i2c_client *client) 567 { 568 struct mn88472_dev *dev = i2c_get_clientdata(client); 569 570 dev_dbg(&client->dev, "\n"); 571 572 return &dev->fe; 573 } 574 575 static int mn88472_probe(struct i2c_client *client) 576 { 577 struct mn88472_config *pdata = client->dev.platform_data; 578 struct mn88472_dev *dev; 579 struct dtv_frontend_properties *c; 580 int ret; 581 unsigned int utmp; 582 static const struct regmap_config regmap_config = { 583 .reg_bits = 8, 584 .val_bits = 8, 585 }; 586 587 dev_dbg(&client->dev, "\n"); 588 589 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 590 if (!dev) { 591 ret = -ENOMEM; 592 goto err; 593 } 594 595 dev->i2c_write_max = pdata->i2c_wr_max ? pdata->i2c_wr_max : ~0; 596 dev->clk = pdata->xtal; 597 dev->ts_mode = pdata->ts_mode; 598 dev->ts_clk = pdata->ts_clock; 599 dev->client[0] = client; 600 dev->regmap[0] = regmap_init_i2c(dev->client[0], ®map_config); 601 if (IS_ERR(dev->regmap[0])) { 602 ret = PTR_ERR(dev->regmap[0]); 603 goto err_kfree; 604 } 605 606 /* 607 * Chip has three I2C addresses for different register banks. Used 608 * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients, 609 * 0x1a and 0x1c, in order to get own I2C client for each register bank. 610 * 611 * Also, register bank 2 do not support sequential I/O. Only single 612 * register write or read is allowed to that bank. 613 */ 614 dev->client[1] = i2c_new_dummy_device(client->adapter, 0x1a); 615 if (IS_ERR(dev->client[1])) { 616 ret = PTR_ERR(dev->client[1]); 617 dev_err(&client->dev, "I2C registration failed\n"); 618 goto err_regmap_0_regmap_exit; 619 } 620 dev->regmap[1] = regmap_init_i2c(dev->client[1], ®map_config); 621 if (IS_ERR(dev->regmap[1])) { 622 ret = PTR_ERR(dev->regmap[1]); 623 goto err_client_1_i2c_unregister_device; 624 } 625 i2c_set_clientdata(dev->client[1], dev); 626 627 dev->client[2] = i2c_new_dummy_device(client->adapter, 0x1c); 628 if (IS_ERR(dev->client[2])) { 629 ret = PTR_ERR(dev->client[2]); 630 dev_err(&client->dev, "2nd I2C registration failed\n"); 631 goto err_regmap_1_regmap_exit; 632 } 633 dev->regmap[2] = regmap_init_i2c(dev->client[2], ®map_config); 634 if (IS_ERR(dev->regmap[2])) { 635 ret = PTR_ERR(dev->regmap[2]); 636 goto err_client_2_i2c_unregister_device; 637 } 638 i2c_set_clientdata(dev->client[2], dev); 639 640 /* Check demod answers with correct chip id */ 641 ret = regmap_read(dev->regmap[2], 0xff, &utmp); 642 if (ret) 643 goto err_regmap_2_regmap_exit; 644 645 dev_dbg(&client->dev, "chip id=%02x\n", utmp); 646 647 if (utmp != 0x02) { 648 ret = -ENODEV; 649 goto err_regmap_2_regmap_exit; 650 } 651 652 /* Sleep because chip is active by default */ 653 ret = regmap_write(dev->regmap[2], 0x05, 0x3e); 654 if (ret) 655 goto err_regmap_2_regmap_exit; 656 657 /* Create dvb frontend */ 658 memcpy(&dev->fe.ops, &mn88472_ops, sizeof(struct dvb_frontend_ops)); 659 dev->fe.demodulator_priv = client; 660 *pdata->fe = &dev->fe; 661 i2c_set_clientdata(client, dev); 662 663 /* Init stats to indicate which stats are supported */ 664 c = &dev->fe.dtv_property_cache; 665 c->strength.len = 1; 666 c->cnr.len = 1; 667 c->block_error.len = 1; 668 c->block_count.len = 1; 669 670 /* Setup callbacks */ 671 pdata->get_dvb_frontend = mn88472_get_dvb_frontend; 672 673 dev_info(&client->dev, "Panasonic MN88472 successfully identified\n"); 674 675 return 0; 676 err_regmap_2_regmap_exit: 677 regmap_exit(dev->regmap[2]); 678 err_client_2_i2c_unregister_device: 679 i2c_unregister_device(dev->client[2]); 680 err_regmap_1_regmap_exit: 681 regmap_exit(dev->regmap[1]); 682 err_client_1_i2c_unregister_device: 683 i2c_unregister_device(dev->client[1]); 684 err_regmap_0_regmap_exit: 685 regmap_exit(dev->regmap[0]); 686 err_kfree: 687 kfree(dev); 688 err: 689 dev_dbg(&client->dev, "failed=%d\n", ret); 690 return ret; 691 } 692 693 static void mn88472_remove(struct i2c_client *client) 694 { 695 struct mn88472_dev *dev = i2c_get_clientdata(client); 696 697 dev_dbg(&client->dev, "\n"); 698 699 regmap_exit(dev->regmap[2]); 700 i2c_unregister_device(dev->client[2]); 701 702 regmap_exit(dev->regmap[1]); 703 i2c_unregister_device(dev->client[1]); 704 705 regmap_exit(dev->regmap[0]); 706 707 kfree(dev); 708 } 709 710 static const struct i2c_device_id mn88472_id_table[] = { 711 { "mn88472" }, 712 {} 713 }; 714 MODULE_DEVICE_TABLE(i2c, mn88472_id_table); 715 716 static struct i2c_driver mn88472_driver = { 717 .driver = { 718 .name = "mn88472", 719 .suppress_bind_attrs = true, 720 }, 721 .probe = mn88472_probe, 722 .remove = mn88472_remove, 723 .id_table = mn88472_id_table, 724 }; 725 726 module_i2c_driver(mn88472_driver); 727 728 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 729 MODULE_DESCRIPTION("Panasonic MN88472 DVB-T/T2/C demodulator driver"); 730 MODULE_LICENSE("GPL"); 731 MODULE_FIRMWARE(MN88472_FIRMWARE); 732