drivers/media/tuners/e4000.c

   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_V4L2)
 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, &regmap_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_V4L2)
 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_V4L2)
 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");