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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Elonics E4000 silicon tuner driver4 *5 * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>6 */7 8#include "e4000_priv.h"9 10static 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;73err:74 dev_dbg(&client->dev, "failed=%d\n", ret);75 return ret;76}77 78static 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;92err:93 dev_dbg(&client->dev, "failed=%d\n", ret);94 return ret;95}96 97static 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 synthesizer117 *118 * +----------------------------+119 * v |120 * Fref +----+ +-------+ +------+ +---+121 * ------> | PD | --> | VCO | ------> | /N.F | <-- | K |122 * +----+ +-------+ +------+ +---+123 * |124 * |125 * v126 * +-------+ Fout127 * | /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->clk140 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 else218 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;252err:253 dev_dbg(&client->dev, "failed=%d\n", ret);254 return ret;255}256 257/*258 * V4L2 API259 */260#if IS_ENABLED(CONFIG_VIDEO_DEV)261static 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 278static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd)279{280 return container_of(sd, struct e4000_dev, sd);281}282 283static 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 295static 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 310static 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 319static 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 329static 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 343static 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 361static 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 370static const struct v4l2_subdev_ops e4000_subdev_ops = {371 .tuner = &e4000_subdev_tuner_ops,372};373 374static 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 else392 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;405err:406 dev_dbg(&client->dev, "failed=%d\n", ret);407 return ret;408}409 410static 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 else424 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;437err:438 dev_dbg(&client->dev, "failed=%d\n", ret);439 return ret;440}441 442static 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 else461 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;476err:477 dev_dbg(&client->dev, "failed=%d\n", ret);478 return ret;479}480 481static 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;495err:496 dev_dbg(&client->dev, "failed=%d\n", ret);497 return ret;498}499 500static 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 522static 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 driver536 * do not have information to calculate maximum suitable537 * 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 563static const struct v4l2_ctrl_ops e4000_ctrl_ops = {564 .g_volatile_ctrl = e4000_g_volatile_ctrl,565 .s_ctrl = e4000_s_ctrl,566};567#endif568 569/*570 * DVB API571 */572static 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 582static int e4000_dvb_init(struct dvb_frontend *fe)583{584 return e4000_init(fe->tuner_priv);585}586 587static int e4000_dvb_sleep(struct dvb_frontend *fe)588{589 return e4000_sleep(fe->tuner_priv);590}591 592static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)593{594 *frequency = 0; /* Zero-IF */595 return 0;596}597 598static 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 612static int e4000_probe(struct i2c_client *client)613{614 struct e4000_dev *dev;615 struct e4000_config *cfg = client->dev.platform_data;616 struct dvb_frontend *fe = cfg->fe;617 int ret;618 unsigned int uitmp;619 static const struct regmap_config regmap_config = {620 .reg_bits = 8,621 .val_bits = 8,622 };623 624 dev = kzalloc(sizeof(*dev), GFP_KERNEL);625 if (!dev) {626 ret = -ENOMEM;627 goto err;628 }629 630 dev->clk = cfg->clock;631 dev->client = client;632 dev->fe = cfg->fe;633 dev->regmap = devm_regmap_init_i2c(client, ®map_config);634 if (IS_ERR(dev->regmap)) {635 ret = PTR_ERR(dev->regmap);636 goto err_kfree;637 }638 639 /* check if the tuner is there */640 ret = regmap_read(dev->regmap, 0x02, &uitmp);641 if (ret)642 goto err_kfree;643 644 dev_dbg(&client->dev, "chip id=%02x\n", uitmp);645 646 if (uitmp != 0x40) {647 ret = -ENODEV;648 goto err_kfree;649 }650 651 /* put sleep as chip seems to be in normal mode by default */652 ret = regmap_write(dev->regmap, 0x00, 0x00);653 if (ret)654 goto err_kfree;655 656#if IS_ENABLED(CONFIG_VIDEO_DEV)657 /* Register controls */658 v4l2_ctrl_handler_init(&dev->hdl, 9);659 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,660 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);661 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,662 V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);663 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);664 dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,665 V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);666 dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,667 V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);668 v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false);669 dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,670 V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);671 dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,672 V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);673 v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false);674 dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,675 V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);676 dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,677 V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);678 v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false);679 dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,680 V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0);681 if (dev->hdl.error) {682 ret = dev->hdl.error;683 dev_err(&client->dev, "Could not initialize controls\n");684 v4l2_ctrl_handler_free(&dev->hdl);685 goto err_kfree;686 }687 688 dev->sd.ctrl_handler = &dev->hdl;689 dev->f_frequency = bands[0].rangelow;690 dev->f_bandwidth = dev->bandwidth->val;691 v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops);692#endif693 fe->tuner_priv = dev;694 memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops,695 sizeof(fe->ops.tuner_ops));696 v4l2_set_subdevdata(&dev->sd, client);697 i2c_set_clientdata(client, &dev->sd);698 699 dev_info(&client->dev, "Elonics E4000 successfully identified\n");700 return 0;701err_kfree:702 kfree(dev);703err:704 dev_dbg(&client->dev, "failed=%d\n", ret);705 return ret;706}707 708static void e4000_remove(struct i2c_client *client)709{710 struct v4l2_subdev *sd = i2c_get_clientdata(client);711 struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd);712 713 dev_dbg(&client->dev, "\n");714 715#if IS_ENABLED(CONFIG_VIDEO_DEV)716 v4l2_ctrl_handler_free(&dev->hdl);717#endif718 kfree(dev);719}720 721static const struct i2c_device_id e4000_id_table[] = {722 { "e4000" },723 {}724};725MODULE_DEVICE_TABLE(i2c, e4000_id_table);726 727static struct i2c_driver e4000_driver = {728 .driver = {729 .name = "e4000",730 .suppress_bind_attrs = true,731 },732 .probe = e4000_probe,733 .remove = e4000_remove,734 .id_table = e4000_id_table,735};736 737module_i2c_driver(e4000_driver);738 739MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver");740MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");741MODULE_LICENSE("GPL");742