1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Elonics E4000 silicon tuner driver 4 * 5 * Copyright (C) 2012 Antti Palosaari <crope@iki.fi> 6 */ 7 8 #include "e4000_priv.h" 9 10 static int e4000_init(struct e4000_dev *dev) 11 { 12 struct i2c_client *client = dev->client; 13 int ret; 14 15 dev_dbg(&client->dev, "\n"); 16 17 /* reset */ 18 ret = regmap_write(dev->regmap, 0x00, 0x01); 19 if (ret) 20 goto err; 21 22 /* disable output clock */ 23 ret = regmap_write(dev->regmap, 0x06, 0x00); 24 if (ret) 25 goto err; 26 27 ret = regmap_write(dev->regmap, 0x7a, 0x96); 28 if (ret) 29 goto err; 30 31 /* configure gains */ 32 ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2); 33 if (ret) 34 goto err; 35 36 ret = regmap_write(dev->regmap, 0x82, 0x00); 37 if (ret) 38 goto err; 39 40 ret = regmap_write(dev->regmap, 0x24, 0x05); 41 if (ret) 42 goto err; 43 44 ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2); 45 if (ret) 46 goto err; 47 48 ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2); 49 if (ret) 50 goto err; 51 52 /* DC offset control */ 53 ret = regmap_write(dev->regmap, 0x2d, 0x1f); 54 if (ret) 55 goto err; 56 57 ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2); 58 if (ret) 59 goto err; 60 61 /* gain control */ 62 ret = regmap_write(dev->regmap, 0x1a, 0x17); 63 if (ret) 64 goto err; 65 66 ret = regmap_write(dev->regmap, 0x1f, 0x1a); 67 if (ret) 68 goto err; 69 70 dev->active = true; 71 72 return 0; 73 err: 74 dev_dbg(&client->dev, "failed=%d\n", ret); 75 return ret; 76 } 77 78 static int e4000_sleep(struct e4000_dev *dev) 79 { 80 struct i2c_client *client = dev->client; 81 int ret; 82 83 dev_dbg(&client->dev, "\n"); 84 85 dev->active = false; 86 87 ret = regmap_write(dev->regmap, 0x00, 0x00); 88 if (ret) 89 goto err; 90 91 return 0; 92 err: 93 dev_dbg(&client->dev, "failed=%d\n", ret); 94 return ret; 95 } 96 97 static int e4000_set_params(struct e4000_dev *dev) 98 { 99 struct i2c_client *client = dev->client; 100 int ret, i; 101 unsigned int div_n, k, k_cw, div_out; 102 u64 f_vco; 103 u8 buf[5], i_data[4], q_data[4]; 104 105 if (!dev->active) { 106 dev_dbg(&client->dev, "tuner is sleeping\n"); 107 return 0; 108 } 109 110 /* gain control manual */ 111 ret = regmap_write(dev->regmap, 0x1a, 0x00); 112 if (ret) 113 goto err; 114 115 /* 116 * Fractional-N synthesizer 117 * 118 * +----------------------------+ 119 * v | 120 * Fref +----+ +-------+ +------+ +---+ 121 * ------> | PD | --> | VCO | ------> | /N.F | <-- | K | 122 * +----+ +-------+ +------+ +---+ 123 * | 124 * | 125 * v 126 * +-------+ Fout 127 * | /Rout | ------> 128 * +-------+ 129 */ 130 for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) { 131 if (dev->f_frequency <= e4000_pll_lut[i].freq) 132 break; 133 } 134 if (i == ARRAY_SIZE(e4000_pll_lut)) { 135 ret = -EINVAL; 136 goto err; 137 } 138 139 #define F_REF dev->clk 140 div_out = e4000_pll_lut[i].div_out; 141 f_vco = (u64) dev->f_frequency * div_out; 142 /* calculate PLL integer and fractional control word */ 143 div_n = div_u64_rem(f_vco, F_REF, &k); 144 k_cw = div_u64((u64) k * 0x10000, F_REF); 145 146 dev_dbg(&client->dev, 147 "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n", 148 dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_n, k, 149 k_cw, div_out); 150 151 buf[0] = div_n; 152 buf[1] = (k_cw >> 0) & 0xff; 153 buf[2] = (k_cw >> 8) & 0xff; 154 buf[3] = 0x00; 155 buf[4] = e4000_pll_lut[i].div_out_reg; 156 ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5); 157 if (ret) 158 goto err; 159 160 /* LNA filter (RF filter) */ 161 for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) { 162 if (dev->f_frequency <= e400_lna_filter_lut[i].freq) 163 break; 164 } 165 if (i == ARRAY_SIZE(e400_lna_filter_lut)) { 166 ret = -EINVAL; 167 goto err; 168 } 169 170 ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val); 171 if (ret) 172 goto err; 173 174 /* IF filters */ 175 for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) { 176 if (dev->f_bandwidth <= e4000_if_filter_lut[i].freq) 177 break; 178 } 179 if (i == ARRAY_SIZE(e4000_if_filter_lut)) { 180 ret = -EINVAL; 181 goto err; 182 } 183 184 buf[0] = e4000_if_filter_lut[i].reg11_val; 185 buf[1] = e4000_if_filter_lut[i].reg12_val; 186 187 ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2); 188 if (ret) 189 goto err; 190 191 /* frequency band */ 192 for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) { 193 if (dev->f_frequency <= e4000_band_lut[i].freq) 194 break; 195 } 196 if (i == ARRAY_SIZE(e4000_band_lut)) { 197 ret = -EINVAL; 198 goto err; 199 } 200 201 ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val); 202 if (ret) 203 goto err; 204 205 ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val); 206 if (ret) 207 goto err; 208 209 /* DC offset */ 210 for (i = 0; i < 4; i++) { 211 if (i == 0) 212 ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3); 213 else if (i == 1) 214 ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2); 215 else if (i == 2) 216 ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1); 217 else 218 ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1); 219 220 if (ret) 221 goto err; 222 223 ret = regmap_write(dev->regmap, 0x29, 0x01); 224 if (ret) 225 goto err; 226 227 ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3); 228 if (ret) 229 goto err; 230 231 i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f); 232 q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f); 233 } 234 235 swap(q_data[2], q_data[3]); 236 swap(i_data[2], i_data[3]); 237 238 ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4); 239 if (ret) 240 goto err; 241 242 ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4); 243 if (ret) 244 goto err; 245 246 /* gain control auto */ 247 ret = regmap_write(dev->regmap, 0x1a, 0x17); 248 if (ret) 249 goto err; 250 251 return 0; 252 err: 253 dev_dbg(&client->dev, "failed=%d\n", ret); 254 return ret; 255 } 256 257 /* 258 * V4L2 API 259 */ 260 #if IS_ENABLED(CONFIG_VIDEO_DEV) 261 static const struct v4l2_frequency_band bands[] = { 262 { 263 .type = V4L2_TUNER_RF, 264 .index = 0, 265 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 266 .rangelow = 59000000, 267 .rangehigh = 1105000000, 268 }, 269 { 270 .type = V4L2_TUNER_RF, 271 .index = 1, 272 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 273 .rangelow = 1249000000, 274 .rangehigh = 2208000000UL, 275 }, 276 }; 277 278 static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd) 279 { 280 return container_of(sd, struct e4000_dev, sd); 281 } 282 283 static int e4000_standby(struct v4l2_subdev *sd) 284 { 285 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 286 int ret; 287 288 ret = e4000_sleep(dev); 289 if (ret) 290 return ret; 291 292 return e4000_set_params(dev); 293 } 294 295 static int e4000_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v) 296 { 297 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 298 struct i2c_client *client = dev->client; 299 300 dev_dbg(&client->dev, "index=%d\n", v->index); 301 302 strscpy(v->name, "Elonics E4000", sizeof(v->name)); 303 v->type = V4L2_TUNER_RF; 304 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 305 v->rangelow = bands[0].rangelow; 306 v->rangehigh = bands[1].rangehigh; 307 return 0; 308 } 309 310 static int e4000_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v) 311 { 312 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 313 struct i2c_client *client = dev->client; 314 315 dev_dbg(&client->dev, "index=%d\n", v->index); 316 return 0; 317 } 318 319 static int e4000_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) 320 { 321 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 322 struct i2c_client *client = dev->client; 323 324 dev_dbg(&client->dev, "tuner=%d\n", f->tuner); 325 f->frequency = dev->f_frequency; 326 return 0; 327 } 328 329 static int e4000_s_frequency(struct v4l2_subdev *sd, 330 const struct v4l2_frequency *f) 331 { 332 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 333 struct i2c_client *client = dev->client; 334 335 dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n", 336 f->tuner, f->type, f->frequency); 337 338 dev->f_frequency = clamp_t(unsigned int, f->frequency, 339 bands[0].rangelow, bands[1].rangehigh); 340 return e4000_set_params(dev); 341 } 342 343 static int e4000_enum_freq_bands(struct v4l2_subdev *sd, 344 struct v4l2_frequency_band *band) 345 { 346 struct e4000_dev *dev = e4000_subdev_to_dev(sd); 347 struct i2c_client *client = dev->client; 348 349 dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n", 350 band->tuner, band->type, band->index); 351 352 if (band->index >= ARRAY_SIZE(bands)) 353 return -EINVAL; 354 355 band->capability = bands[band->index].capability; 356 band->rangelow = bands[band->index].rangelow; 357 band->rangehigh = bands[band->index].rangehigh; 358 return 0; 359 } 360 361 static const struct v4l2_subdev_tuner_ops e4000_subdev_tuner_ops = { 362 .standby = e4000_standby, 363 .g_tuner = e4000_g_tuner, 364 .s_tuner = e4000_s_tuner, 365 .g_frequency = e4000_g_frequency, 366 .s_frequency = e4000_s_frequency, 367 .enum_freq_bands = e4000_enum_freq_bands, 368 }; 369 370 static const struct v4l2_subdev_ops e4000_subdev_ops = { 371 .tuner = &e4000_subdev_tuner_ops, 372 }; 373 374 static int e4000_set_lna_gain(struct dvb_frontend *fe) 375 { 376 struct e4000_dev *dev = fe->tuner_priv; 377 struct i2c_client *client = dev->client; 378 int ret; 379 u8 u8tmp; 380 381 dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n", 382 dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val, 383 dev->lna_gain->cur.val, dev->lna_gain->val); 384 385 if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val) 386 u8tmp = 0x17; 387 else if (dev->lna_gain_auto->val) 388 u8tmp = 0x19; 389 else if (dev->if_gain_auto->cur.val) 390 u8tmp = 0x16; 391 else 392 u8tmp = 0x10; 393 394 ret = regmap_write(dev->regmap, 0x1a, u8tmp); 395 if (ret) 396 goto err; 397 398 if (dev->lna_gain_auto->val == false) { 399 ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val); 400 if (ret) 401 goto err; 402 } 403 404 return 0; 405 err: 406 dev_dbg(&client->dev, "failed=%d\n", ret); 407 return ret; 408 } 409 410 static int e4000_set_mixer_gain(struct dvb_frontend *fe) 411 { 412 struct e4000_dev *dev = fe->tuner_priv; 413 struct i2c_client *client = dev->client; 414 int ret; 415 u8 u8tmp; 416 417 dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n", 418 dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val, 419 dev->mixer_gain->cur.val, dev->mixer_gain->val); 420 421 if (dev->mixer_gain_auto->val) 422 u8tmp = 0x15; 423 else 424 u8tmp = 0x14; 425 426 ret = regmap_write(dev->regmap, 0x20, u8tmp); 427 if (ret) 428 goto err; 429 430 if (dev->mixer_gain_auto->val == false) { 431 ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val); 432 if (ret) 433 goto err; 434 } 435 436 return 0; 437 err: 438 dev_dbg(&client->dev, "failed=%d\n", ret); 439 return ret; 440 } 441 442 static int e4000_set_if_gain(struct dvb_frontend *fe) 443 { 444 struct e4000_dev *dev = fe->tuner_priv; 445 struct i2c_client *client = dev->client; 446 int ret; 447 u8 buf[2]; 448 u8 u8tmp; 449 450 dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n", 451 dev->if_gain_auto->cur.val, dev->if_gain_auto->val, 452 dev->if_gain->cur.val, dev->if_gain->val); 453 454 if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val) 455 u8tmp = 0x17; 456 else if (dev->lna_gain_auto->cur.val) 457 u8tmp = 0x19; 458 else if (dev->if_gain_auto->val) 459 u8tmp = 0x16; 460 else 461 u8tmp = 0x10; 462 463 ret = regmap_write(dev->regmap, 0x1a, u8tmp); 464 if (ret) 465 goto err; 466 467 if (dev->if_gain_auto->val == false) { 468 buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val; 469 buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val; 470 ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2); 471 if (ret) 472 goto err; 473 } 474 475 return 0; 476 err: 477 dev_dbg(&client->dev, "failed=%d\n", ret); 478 return ret; 479 } 480 481 static int e4000_pll_lock(struct dvb_frontend *fe) 482 { 483 struct e4000_dev *dev = fe->tuner_priv; 484 struct i2c_client *client = dev->client; 485 int ret; 486 unsigned int uitmp; 487 488 ret = regmap_read(dev->regmap, 0x07, &uitmp); 489 if (ret) 490 goto err; 491 492 dev->pll_lock->val = (uitmp & 0x01); 493 494 return 0; 495 err: 496 dev_dbg(&client->dev, "failed=%d\n", ret); 497 return ret; 498 } 499 500 static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 501 { 502 struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl); 503 struct i2c_client *client = dev->client; 504 int ret; 505 506 if (!dev->active) 507 return 0; 508 509 switch (ctrl->id) { 510 case V4L2_CID_RF_TUNER_PLL_LOCK: 511 ret = e4000_pll_lock(dev->fe); 512 break; 513 default: 514 dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", 515 ctrl->id, ctrl->name); 516 ret = -EINVAL; 517 } 518 519 return ret; 520 } 521 522 static int e4000_s_ctrl(struct v4l2_ctrl *ctrl) 523 { 524 struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl); 525 struct i2c_client *client = dev->client; 526 int ret; 527 528 if (!dev->active) 529 return 0; 530 531 switch (ctrl->id) { 532 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: 533 case V4L2_CID_RF_TUNER_BANDWIDTH: 534 /* 535 * TODO: Auto logic does not work 100% correctly as tuner driver 536 * do not have information to calculate maximum suitable 537 * bandwidth. Calculating it is responsible of master driver. 538 */ 539 dev->f_bandwidth = dev->bandwidth->val; 540 ret = e4000_set_params(dev); 541 break; 542 case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: 543 case V4L2_CID_RF_TUNER_LNA_GAIN: 544 ret = e4000_set_lna_gain(dev->fe); 545 break; 546 case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: 547 case V4L2_CID_RF_TUNER_MIXER_GAIN: 548 ret = e4000_set_mixer_gain(dev->fe); 549 break; 550 case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: 551 case V4L2_CID_RF_TUNER_IF_GAIN: 552 ret = e4000_set_if_gain(dev->fe); 553 break; 554 default: 555 dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", 556 ctrl->id, ctrl->name); 557 ret = -EINVAL; 558 } 559 560 return ret; 561 } 562 563 static const struct v4l2_ctrl_ops e4000_ctrl_ops = { 564 .g_volatile_ctrl = e4000_g_volatile_ctrl, 565 .s_ctrl = e4000_s_ctrl, 566 }; 567 #endif 568 569 /* 570 * DVB API 571 */ 572 static int e4000_dvb_set_params(struct dvb_frontend *fe) 573 { 574 struct e4000_dev *dev = fe->tuner_priv; 575 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 576 577 dev->f_frequency = c->frequency; 578 dev->f_bandwidth = c->bandwidth_hz; 579 return e4000_set_params(dev); 580 } 581 582 static int e4000_dvb_init(struct dvb_frontend *fe) 583 { 584 return e4000_init(fe->tuner_priv); 585 } 586 587 static int e4000_dvb_sleep(struct dvb_frontend *fe) 588 { 589 return e4000_sleep(fe->tuner_priv); 590 } 591 592 static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) 593 { 594 *frequency = 0; /* Zero-IF */ 595 return 0; 596 } 597 598 static const struct dvb_tuner_ops e4000_dvb_tuner_ops = { 599 .info = { 600 .name = "Elonics E4000", 601 .frequency_min_hz = 174 * MHz, 602 .frequency_max_hz = 862 * MHz, 603 }, 604 605 .init = e4000_dvb_init, 606 .sleep = e4000_dvb_sleep, 607 .set_params = e4000_dvb_set_params, 608 609 .get_if_frequency = e4000_dvb_get_if_frequency, 610 }; 611 612 static int e4000_probe(struct i2c_client *client, 613 const struct i2c_device_id *id) 614 { 615 struct e4000_dev *dev; 616 struct e4000_config *cfg = client->dev.platform_data; 617 struct dvb_frontend *fe = cfg->fe; 618 int ret; 619 unsigned int uitmp; 620 static const struct regmap_config regmap_config = { 621 .reg_bits = 8, 622 .val_bits = 8, 623 }; 624 625 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 626 if (!dev) { 627 ret = -ENOMEM; 628 goto err; 629 } 630 631 dev->clk = cfg->clock; 632 dev->client = client; 633 dev->fe = cfg->fe; 634 dev->regmap = devm_regmap_init_i2c(client, ®map_config); 635 if (IS_ERR(dev->regmap)) { 636 ret = PTR_ERR(dev->regmap); 637 goto err_kfree; 638 } 639 640 /* check if the tuner is there */ 641 ret = regmap_read(dev->regmap, 0x02, &uitmp); 642 if (ret) 643 goto err_kfree; 644 645 dev_dbg(&client->dev, "chip id=%02x\n", uitmp); 646 647 if (uitmp != 0x40) { 648 ret = -ENODEV; 649 goto err_kfree; 650 } 651 652 /* put sleep as chip seems to be in normal mode by default */ 653 ret = regmap_write(dev->regmap, 0x00, 0x00); 654 if (ret) 655 goto err_kfree; 656 657 #if IS_ENABLED(CONFIG_VIDEO_DEV) 658 /* Register controls */ 659 v4l2_ctrl_handler_init(&dev->hdl, 9); 660 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 661 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); 662 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 663 V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000); 664 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 665 dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 666 V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1); 667 dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 668 V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10); 669 v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false); 670 dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 671 V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1); 672 dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 673 V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1); 674 v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false); 675 dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 676 V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1); 677 dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 678 V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0); 679 v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false); 680 dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, 681 V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0); 682 if (dev->hdl.error) { 683 ret = dev->hdl.error; 684 dev_err(&client->dev, "Could not initialize controls\n"); 685 v4l2_ctrl_handler_free(&dev->hdl); 686 goto err_kfree; 687 } 688 689 dev->sd.ctrl_handler = &dev->hdl; 690 dev->f_frequency = bands[0].rangelow; 691 dev->f_bandwidth = dev->bandwidth->val; 692 v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops); 693 #endif 694 fe->tuner_priv = dev; 695 memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops, 696 sizeof(fe->ops.tuner_ops)); 697 v4l2_set_subdevdata(&dev->sd, client); 698 i2c_set_clientdata(client, &dev->sd); 699 700 dev_info(&client->dev, "Elonics E4000 successfully identified\n"); 701 return 0; 702 err_kfree: 703 kfree(dev); 704 err: 705 dev_dbg(&client->dev, "failed=%d\n", ret); 706 return ret; 707 } 708 709 static int e4000_remove(struct i2c_client *client) 710 { 711 struct v4l2_subdev *sd = i2c_get_clientdata(client); 712 struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd); 713 714 dev_dbg(&client->dev, "\n"); 715 716 #if IS_ENABLED(CONFIG_VIDEO_DEV) 717 v4l2_ctrl_handler_free(&dev->hdl); 718 #endif 719 kfree(dev); 720 721 return 0; 722 } 723 724 static const struct i2c_device_id e4000_id_table[] = { 725 {"e4000", 0}, 726 {} 727 }; 728 MODULE_DEVICE_TABLE(i2c, e4000_id_table); 729 730 static struct i2c_driver e4000_driver = { 731 .driver = { 732 .name = "e4000", 733 .suppress_bind_attrs = true, 734 }, 735 .probe = e4000_probe, 736 .remove = e4000_remove, 737 .id_table = e4000_id_table, 738 }; 739 740 module_i2c_driver(e4000_driver); 741 742 MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver"); 743 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 744 MODULE_LICENSE("GPL"); 745