drivers/media/tuners/e4000.c

   1 /*
   2  * Elonics E4000 silicon tuner driver
   3  *
   4  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License along
  17  *    with this program; if not, write to the Free Software Foundation, Inc.,
  18  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "e4000_priv.h"
  22
  23 static int e4000_init(struct dvb_frontend *fe)
  24 {
  25         struct e4000_dev *dev = fe->tuner_priv;
  26         struct i2c_client *client = dev->client;
  27         int ret;
  28
  29         dev_dbg(&client->dev, "\n");
  30
  31         /* reset */
  32         ret = regmap_write(dev->regmap, 0x00, 0x01);
  33         if (ret)
  34                 goto err;
  35
  36         /* disable output clock */
  37         ret = regmap_write(dev->regmap, 0x06, 0x00);
  38         if (ret)
  39                 goto err;
  40
  41         ret = regmap_write(dev->regmap, 0x7a, 0x96);
  42         if (ret)
  43                 goto err;
  44
  45         /* configure gains */
  46         ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2);
  47         if (ret)
  48                 goto err;
  49
  50         ret = regmap_write(dev->regmap, 0x82, 0x00);
  51         if (ret)
  52                 goto err;
  53
  54         ret = regmap_write(dev->regmap, 0x24, 0x05);
  55         if (ret)
  56                 goto err;
  57
  58         ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2);
  59         if (ret)
  60                 goto err;
  61
  62         ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2);
  63         if (ret)
  64                 goto err;
  65
  66         /* DC offset control */
  67         ret = regmap_write(dev->regmap, 0x2d, 0x1f);
  68         if (ret)
  69                 goto err;
  70
  71         ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2);
  72         if (ret)
  73                 goto err;
  74
  75         /* gain control */
  76         ret = regmap_write(dev->regmap, 0x1a, 0x17);
  77         if (ret)
  78                 goto err;
  79
  80         ret = regmap_write(dev->regmap, 0x1f, 0x1a);
  81         if (ret)
  82                 goto err;
  83
  84         dev->active = true;
  85
  86         return 0;
  87 err:
  88         dev_dbg(&client->dev, "failed=%d\n", ret);
  89         return ret;
  90 }
  91
  92 static int e4000_sleep(struct dvb_frontend *fe)
  93 {
  94         struct e4000_dev *dev = fe->tuner_priv;
  95         struct i2c_client *client = dev->client;
  96         int ret;
  97
  98         dev_dbg(&client->dev, "\n");
  99
 100         dev->active = false;
 101
 102         ret = regmap_write(dev->regmap, 0x00, 0x00);
 103         if (ret)
 104                 goto err;
 105
 106         return 0;
 107 err:
 108         dev_dbg(&client->dev, "failed=%d\n", ret);
 109         return ret;
 110 }
 111
 112 static int e4000_set_params(struct dvb_frontend *fe)
 113 {
 114         struct e4000_dev *dev = fe->tuner_priv;
 115         struct i2c_client *client = dev->client;
 116         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 117         int ret, i;
 118         unsigned int div_n, k, k_cw, div_out;
 119         u64 f_vco;
 120         u8 buf[5], i_data[4], q_data[4];
 121
 122         dev_dbg(&client->dev,
 123                 "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
 124                 c->delivery_system, c->frequency, c->bandwidth_hz);
 125
 126         /* gain control manual */
 127         ret = regmap_write(dev->regmap, 0x1a, 0x00);
 128         if (ret)
 129                 goto err;
 130
 131         /*
 132          * Fractional-N synthesizer
 133          *
 134          *           +----------------------------+
 135          *           v                            |
 136          *  Fref   +----+     +-------+         +------+     +---+
 137          * ------> | PD | --> |  VCO  | ------> | /N.F | <-- | K |
 138          *         +----+     +-------+         +------+     +---+
 139          *                      |
 140          *                      |
 141          *                      v
 142          *                    +-------+  Fout
 143          *                    | /Rout | ------>
 144          *                    +-------+
 145          */
 146         for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) {
 147                 if (c->frequency <= e4000_pll_lut[i].freq)
 148                         break;
 149         }
 150         if (i == ARRAY_SIZE(e4000_pll_lut)) {
 151                 ret = -EINVAL;
 152                 goto err;
 153         }
 154
 155         #define F_REF dev->clk
 156         div_out = e4000_pll_lut[i].div_out;
 157         f_vco = (u64) c->frequency * div_out;
 158         /* calculate PLL integer and fractional control word */
 159         div_n = div_u64_rem(f_vco, F_REF, &k);
 160         k_cw = div_u64((u64) k * 0x10000, F_REF);
 161
 162         dev_dbg(&client->dev,
 163                 "frequency=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
 164                 c->frequency, f_vco, F_REF, div_n, k, k_cw, div_out);
 165
 166         buf[0] = div_n;
 167         buf[1] = (k_cw >> 0) & 0xff;
 168         buf[2] = (k_cw >> 8) & 0xff;
 169         buf[3] = 0x00;
 170         buf[4] = e4000_pll_lut[i].div_out_reg;
 171         ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5);
 172         if (ret)
 173                 goto err;
 174
 175         /* LNA filter (RF filter) */
 176         for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) {
 177                 if (c->frequency <= e400_lna_filter_lut[i].freq)
 178                         break;
 179         }
 180         if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
 181                 ret = -EINVAL;
 182                 goto err;
 183         }
 184
 185         ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val);
 186         if (ret)
 187                 goto err;
 188
 189         /* IF filters */
 190         for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) {
 191                 if (c->bandwidth_hz <= e4000_if_filter_lut[i].freq)
 192                         break;
 193         }
 194         if (i == ARRAY_SIZE(e4000_if_filter_lut)) {
 195                 ret = -EINVAL;
 196                 goto err;
 197         }
 198
 199         buf[0] = e4000_if_filter_lut[i].reg11_val;
 200         buf[1] = e4000_if_filter_lut[i].reg12_val;
 201
 202         ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2);
 203         if (ret)
 204                 goto err;
 205
 206         /* frequency band */
 207         for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) {
 208                 if (c->frequency <= e4000_band_lut[i].freq)
 209                         break;
 210         }
 211         if (i == ARRAY_SIZE(e4000_band_lut)) {
 212                 ret = -EINVAL;
 213                 goto err;
 214         }
 215
 216         ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val);
 217         if (ret)
 218                 goto err;
 219
 220         ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val);
 221         if (ret)
 222                 goto err;
 223
 224         /* DC offset */
 225         for (i = 0; i < 4; i++) {
 226                 if (i == 0)
 227                         ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3);
 228                 else if (i == 1)
 229                         ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2);
 230                 else if (i == 2)
 231                         ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1);
 232                 else
 233                         ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1);
 234
 235                 if (ret)
 236                         goto err;
 237
 238                 ret = regmap_write(dev->regmap, 0x29, 0x01);
 239                 if (ret)
 240                         goto err;
 241
 242                 ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3);
 243                 if (ret)
 244                         goto err;
 245
 246                 i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f);
 247                 q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f);
 248         }
 249
 250         swap(q_data[2], q_data[3]);
 251         swap(i_data[2], i_data[3]);
 252
 253         ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4);
 254         if (ret)
 255                 goto err;
 256
 257         ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4);
 258         if (ret)
 259                 goto err;
 260
 261         /* gain control auto */
 262         ret = regmap_write(dev->regmap, 0x1a, 0x17);
 263         if (ret)
 264                 goto err;
 265
 266         return 0;
 267 err:
 268         dev_dbg(&client->dev, "failed=%d\n", ret);
 269         return ret;
 270 }
 271
 272 static int e4000_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 273 {
 274         struct e4000_dev *dev = fe->tuner_priv;
 275         struct i2c_client *client = dev->client;
 276
 277         dev_dbg(&client->dev, "\n");
 278
 279         *frequency = 0; /* Zero-IF */
 280
 281         return 0;
 282 }
 283
 284 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 285 static int e4000_set_lna_gain(struct dvb_frontend *fe)
 286 {
 287         struct e4000_dev *dev = fe->tuner_priv;
 288         struct i2c_client *client = dev->client;
 289         int ret;
 290         u8 u8tmp;
 291
 292         dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n",
 293                 dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val,
 294                 dev->lna_gain->cur.val, dev->lna_gain->val);
 295
 296         if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val)
 297                 u8tmp = 0x17;
 298         else if (dev->lna_gain_auto->val)
 299                 u8tmp = 0x19;
 300         else if (dev->if_gain_auto->cur.val)
 301                 u8tmp = 0x16;
 302         else
 303                 u8tmp = 0x10;
 304
 305         ret = regmap_write(dev->regmap, 0x1a, u8tmp);
 306         if (ret)
 307                 goto err;
 308
 309         if (dev->lna_gain_auto->val == false) {
 310                 ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val);
 311                 if (ret)
 312                         goto err;
 313         }
 314
 315         return 0;
 316 err:
 317         dev_dbg(&client->dev, "failed=%d\n", ret);
 318         return ret;
 319 }
 320
 321 static int e4000_set_mixer_gain(struct dvb_frontend *fe)
 322 {
 323         struct e4000_dev *dev = fe->tuner_priv;
 324         struct i2c_client *client = dev->client;
 325         int ret;
 326         u8 u8tmp;
 327
 328         dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n",
 329                 dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val,
 330                 dev->mixer_gain->cur.val, dev->mixer_gain->val);
 331
 332         if (dev->mixer_gain_auto->val)
 333                 u8tmp = 0x15;
 334         else
 335                 u8tmp = 0x14;
 336
 337         ret = regmap_write(dev->regmap, 0x20, u8tmp);
 338         if (ret)
 339                 goto err;
 340
 341         if (dev->mixer_gain_auto->val == false) {
 342                 ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val);
 343                 if (ret)
 344                         goto err;
 345         }
 346
 347         return 0;
 348 err:
 349         dev_dbg(&client->dev, "failed=%d\n", ret);
 350         return ret;
 351 }
 352
 353 static int e4000_set_if_gain(struct dvb_frontend *fe)
 354 {
 355         struct e4000_dev *dev = fe->tuner_priv;
 356         struct i2c_client *client = dev->client;
 357         int ret;
 358         u8 buf[2];
 359         u8 u8tmp;
 360
 361         dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n",
 362                 dev->if_gain_auto->cur.val, dev->if_gain_auto->val,
 363                 dev->if_gain->cur.val, dev->if_gain->val);
 364
 365         if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val)
 366                 u8tmp = 0x17;
 367         else if (dev->lna_gain_auto->cur.val)
 368                 u8tmp = 0x19;
 369         else if (dev->if_gain_auto->val)
 370                 u8tmp = 0x16;
 371         else
 372                 u8tmp = 0x10;
 373
 374         ret = regmap_write(dev->regmap, 0x1a, u8tmp);
 375         if (ret)
 376                 goto err;
 377
 378         if (dev->if_gain_auto->val == false) {
 379                 buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val;
 380                 buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val;
 381                 ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2);
 382                 if (ret)
 383                         goto err;
 384         }
 385
 386         return 0;
 387 err:
 388         dev_dbg(&client->dev, "failed=%d\n", ret);
 389         return ret;
 390 }
 391
 392 static int e4000_pll_lock(struct dvb_frontend *fe)
 393 {
 394         struct e4000_dev *dev = fe->tuner_priv;
 395         struct i2c_client *client = dev->client;
 396         int ret;
 397         unsigned int uitmp;
 398
 399         ret = regmap_read(dev->regmap, 0x07, &uitmp);
 400         if (ret)
 401                 goto err;
 402
 403         dev->pll_lock->val = (uitmp & 0x01);
 404
 405         return 0;
 406 err:
 407         dev_dbg(&client->dev, "failed=%d\n", ret);
 408         return ret;
 409 }
 410
 411 static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 412 {
 413         struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
 414         struct i2c_client *client = dev->client;
 415         int ret;
 416
 417         if (!dev->active)
 418                 return 0;
 419
 420         switch (ctrl->id) {
 421         case  V4L2_CID_RF_TUNER_PLL_LOCK:
 422                 ret = e4000_pll_lock(dev->fe);
 423                 break;
 424         default:
 425                 dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
 426                         ctrl->id, ctrl->name);
 427                 ret = -EINVAL;
 428         }
 429
 430         return ret;
 431 }
 432
 433 static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
 434 {
 435         struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
 436         struct i2c_client *client = dev->client;
 437         struct dtv_frontend_properties *c = &dev->fe->dtv_property_cache;
 438         int ret;
 439
 440         if (!dev->active)
 441                 return 0;
 442
 443         switch (ctrl->id) {
 444         case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
 445         case V4L2_CID_RF_TUNER_BANDWIDTH:
 446                 c->bandwidth_hz = dev->bandwidth->val;
 447                 ret = e4000_set_params(dev->fe);
 448                 break;
 449         case  V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
 450         case  V4L2_CID_RF_TUNER_LNA_GAIN:
 451                 ret = e4000_set_lna_gain(dev->fe);
 452                 break;
 453         case  V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
 454         case  V4L2_CID_RF_TUNER_MIXER_GAIN:
 455                 ret = e4000_set_mixer_gain(dev->fe);
 456                 break;
 457         case  V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
 458         case  V4L2_CID_RF_TUNER_IF_GAIN:
 459                 ret = e4000_set_if_gain(dev->fe);
 460                 break;
 461         default:
 462                 dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
 463                         ctrl->id, ctrl->name);
 464                 ret = -EINVAL;
 465         }
 466
 467         return ret;
 468 }
 469
 470 static const struct v4l2_ctrl_ops e4000_ctrl_ops = {
 471         .g_volatile_ctrl = e4000_g_volatile_ctrl,
 472         .s_ctrl = e4000_s_ctrl,
 473 };
 474 #endif
 475
 476 static const struct dvb_tuner_ops e4000_tuner_ops = {
 477         .info = {
 478                 .name           = "Elonics E4000",
 479                 .frequency_min  = 174000000,
 480                 .frequency_max  = 862000000,
 481         },
 482
 483         .init = e4000_init,
 484         .sleep = e4000_sleep,
 485         .set_params = e4000_set_params,
 486
 487         .get_if_frequency = e4000_get_if_frequency,
 488 };
 489
 490 /*
 491  * Use V4L2 subdev to carry V4L2 control handler, even we don't implement
 492  * subdev itself, just to avoid reinventing the wheel.
 493  */
 494 static int e4000_probe(struct i2c_client *client,
 495                        const struct i2c_device_id *id)
 496 {
 497         struct e4000_dev *dev;
 498         struct e4000_config *cfg = client->dev.platform_data;
 499         struct dvb_frontend *fe = cfg->fe;
 500         int ret;
 501         unsigned int uitmp;
 502         static const struct regmap_config regmap_config = {
 503                 .reg_bits = 8,
 504                 .val_bits = 8,
 505         };
 506
 507         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 508         if (!dev) {
 509                 ret = -ENOMEM;
 510                 goto err;
 511         }
 512
 513         dev->clk = cfg->clock;
 514         dev->client = client;
 515         dev->fe = cfg->fe;
 516         dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
 517         if (IS_ERR(dev->regmap)) {
 518                 ret = PTR_ERR(dev->regmap);
 519                 goto err_kfree;
 520         }
 521
 522         /* check if the tuner is there */
 523         ret = regmap_read(dev->regmap, 0x02, &uitmp);
 524         if (ret)
 525                 goto err_kfree;
 526
 527         dev_dbg(&client->dev, "chip id=%02x\n", uitmp);
 528
 529         if (uitmp != 0x40) {
 530                 ret = -ENODEV;
 531                 goto err_kfree;
 532         }
 533
 534         /* put sleep as chip seems to be in normal mode by default */
 535         ret = regmap_write(dev->regmap, 0x00, 0x00);
 536         if (ret)
 537                 goto err_kfree;
 538
 539 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 540         /* Register controls */
 541         v4l2_ctrl_handler_init(&dev->hdl, 9);
 542         dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 543                         V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
 544         dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 545                         V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);
 546         v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
 547         dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 548                         V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);
 549         dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 550                         V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);
 551         v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false);
 552         dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 553                         V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);
 554         dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 555                         V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
 556         v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false);
 557         dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 558                         V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);
 559         dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 560                         V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
 561         v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false);
 562         dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
 563                         V4L2_CID_RF_TUNER_PLL_LOCK,  0, 1, 1, 0);
 564         if (dev->hdl.error) {
 565                 ret = dev->hdl.error;
 566                 dev_err(&client->dev, "Could not initialize controls\n");
 567                 v4l2_ctrl_handler_free(&dev->hdl);
 568                 goto err_kfree;
 569         }
 570
 571         dev->sd.ctrl_handler = &dev->hdl;
 572 #endif
 573         fe->tuner_priv = dev;
 574         memcpy(&fe->ops.tuner_ops, &e4000_tuner_ops,
 575                         sizeof(struct dvb_tuner_ops));
 576         v4l2_set_subdevdata(&dev->sd, client);
 577         i2c_set_clientdata(client, &dev->sd);
 578
 579         dev_info(&client->dev, "Elonics E4000 successfully identified\n");
 580         return 0;
 581 err_kfree:
 582         kfree(dev);
 583 err:
 584         dev_dbg(&client->dev, "failed=%d\n", ret);
 585         return ret;
 586 }
 587
 588 static int e4000_remove(struct i2c_client *client)
 589 {
 590         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 591         struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd);
 592
 593         dev_dbg(&client->dev, "\n");
 594
 595 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 596         v4l2_ctrl_handler_free(&dev->hdl);
 597 #endif
 598         kfree(dev);
 599
 600         return 0;
 601 }
 602
 603 static const struct i2c_device_id e4000_id_table[] = {
 604         {"e4000", 0},
 605         {}
 606 };
 607 MODULE_DEVICE_TABLE(i2c, e4000_id_table);
 608
 609 static struct i2c_driver e4000_driver = {
 610         .driver = {
 611                 .owner  = THIS_MODULE,
 612                 .name   = "e4000",
 613                 .suppress_bind_attrs = true,
 614         },
 615         .probe          = e4000_probe,
 616         .remove         = e4000_remove,
 617         .id_table       = e4000_id_table,
 618 };
 619
 620 module_i2c_driver(e4000_driver);
 621
 622 MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver");
 623 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 624 MODULE_LICENSE("GPL");