drivers/media/tuners/fc2580.c

   1 /*
   2  * FCI FC2580 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 "fc2580_priv.h"
  22
  23 /*
  24  * TODO:
  25  * I2C write and read works only for one single register. Multiple registers
  26  * could not be accessed using normal register address auto-increment.
  27  * There could be (very likely) register to change that behavior....
  28  */
  29
  30 /* write single register conditionally only when value differs from 0xff
  31  * XXX: This is special routine meant only for writing fc2580_freq_regs_lut[]
  32  * values. Do not use for the other purposes. */
  33 static int fc2580_wr_reg_ff(struct fc2580_dev *dev, u8 reg, u8 val)
  34 {
  35         if (val == 0xff)
  36                 return 0;
  37         else
  38                 return regmap_write(dev->regmap, reg, val);
  39 }
  40
  41 static int fc2580_set_params(struct fc2580_dev *dev)
  42 {
  43         struct i2c_client *client = dev->client;
  44         int ret, i;
  45         unsigned int uitmp, div_ref, div_ref_val, div_n, k, k_cw, div_out;
  46         u64 f_vco;
  47         u8 synth_config;
  48         unsigned long timeout;
  49
  50         if (!dev->active) {
  51                 dev_dbg(&client->dev, "tuner is sleeping\n");
  52                 return 0;
  53         }
  54
  55         /*
  56          * Fractional-N synthesizer
  57          *
  58          *                      +---------------------------------------+
  59          *                      v                                       |
  60          *  Fref   +----+     +----+     +-------+         +----+     +------+     +---+
  61          * ------> | /R | --> | PD | --> |  VCO  | ------> | /2 | --> | /N.F | <-- | K |
  62          *         +----+     +----+     +-------+         +----+     +------+     +---+
  63          *                                 |
  64          *                                 |
  65          *                                 v
  66          *                               +-------+  Fout
  67          *                               | /Rout | ------>
  68          *                               +-------+
  69          */
  70         for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
  71                 if (dev->f_frequency <= fc2580_pll_lut[i].freq)
  72                         break;
  73         }
  74         if (i == ARRAY_SIZE(fc2580_pll_lut)) {
  75                 ret = -EINVAL;
  76                 goto err;
  77         }
  78
  79         #define DIV_PRE_N 2
  80         #define F_REF dev->clk
  81         div_out = fc2580_pll_lut[i].div_out;
  82         f_vco = (u64) dev->f_frequency * div_out;
  83         synth_config = fc2580_pll_lut[i].band;
  84         if (f_vco < 2600000000ULL)
  85                 synth_config |= 0x06;
  86         else
  87                 synth_config |= 0x0e;
  88
  89         /* select reference divider R (keep PLL div N in valid range) */
  90         #define DIV_N_MIN 76
  91         if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 1)) {
  92                 div_ref = 1;
  93                 div_ref_val = 0x00;
  94         } else if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 2)) {
  95                 div_ref = 2;
  96                 div_ref_val = 0x10;
  97         } else {
  98                 div_ref = 4;
  99                 div_ref_val = 0x20;
 100         }
 101
 102         /* calculate PLL integer and fractional control word */
 103         uitmp = DIV_PRE_N * F_REF / div_ref;
 104         div_n = div_u64_rem(f_vco, uitmp, &k);
 105         k_cw = div_u64((u64) k * 0x100000, uitmp);
 106
 107         dev_dbg(&client->dev,
 108                 "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
 109                 dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_ref,
 110                 div_n, k, div_out, k_cw);
 111
 112         ret = regmap_write(dev->regmap, 0x02, synth_config);
 113         if (ret)
 114                 goto err;
 115
 116         ret = regmap_write(dev->regmap, 0x18, div_ref_val << 0 | k_cw >> 16);
 117         if (ret)
 118                 goto err;
 119
 120         ret = regmap_write(dev->regmap, 0x1a, (k_cw >> 8) & 0xff);
 121         if (ret)
 122                 goto err;
 123
 124         ret = regmap_write(dev->regmap, 0x1b, (k_cw >> 0) & 0xff);
 125         if (ret)
 126                 goto err;
 127
 128         ret = regmap_write(dev->regmap, 0x1c, div_n);
 129         if (ret)
 130                 goto err;
 131
 132         /* registers */
 133         for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
 134                 if (dev->f_frequency <= fc2580_freq_regs_lut[i].freq)
 135                         break;
 136         }
 137         if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) {
 138                 ret = -EINVAL;
 139                 goto err;
 140         }
 141
 142         ret = fc2580_wr_reg_ff(dev, 0x25, fc2580_freq_regs_lut[i].r25_val);
 143         if (ret)
 144                 goto err;
 145
 146         ret = fc2580_wr_reg_ff(dev, 0x27, fc2580_freq_regs_lut[i].r27_val);
 147         if (ret)
 148                 goto err;
 149
 150         ret = fc2580_wr_reg_ff(dev, 0x28, fc2580_freq_regs_lut[i].r28_val);
 151         if (ret)
 152                 goto err;
 153
 154         ret = fc2580_wr_reg_ff(dev, 0x29, fc2580_freq_regs_lut[i].r29_val);
 155         if (ret)
 156                 goto err;
 157
 158         ret = fc2580_wr_reg_ff(dev, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
 159         if (ret)
 160                 goto err;
 161
 162         ret = fc2580_wr_reg_ff(dev, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
 163         if (ret)
 164                 goto err;
 165
 166         ret = fc2580_wr_reg_ff(dev, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
 167         if (ret)
 168                 goto err;
 169
 170         ret = fc2580_wr_reg_ff(dev, 0x30, fc2580_freq_regs_lut[i].r30_val);
 171         if (ret)
 172                 goto err;
 173
 174         ret = fc2580_wr_reg_ff(dev, 0x44, fc2580_freq_regs_lut[i].r44_val);
 175         if (ret)
 176                 goto err;
 177
 178         ret = fc2580_wr_reg_ff(dev, 0x50, fc2580_freq_regs_lut[i].r50_val);
 179         if (ret)
 180                 goto err;
 181
 182         ret = fc2580_wr_reg_ff(dev, 0x53, fc2580_freq_regs_lut[i].r53_val);
 183         if (ret)
 184                 goto err;
 185
 186         ret = fc2580_wr_reg_ff(dev, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
 187         if (ret)
 188                 goto err;
 189
 190         ret = fc2580_wr_reg_ff(dev, 0x61, fc2580_freq_regs_lut[i].r61_val);
 191         if (ret)
 192                 goto err;
 193
 194         ret = fc2580_wr_reg_ff(dev, 0x62, fc2580_freq_regs_lut[i].r62_val);
 195         if (ret)
 196                 goto err;
 197
 198         ret = fc2580_wr_reg_ff(dev, 0x63, fc2580_freq_regs_lut[i].r63_val);
 199         if (ret)
 200                 goto err;
 201
 202         ret = fc2580_wr_reg_ff(dev, 0x67, fc2580_freq_regs_lut[i].r67_val);
 203         if (ret)
 204                 goto err;
 205
 206         ret = fc2580_wr_reg_ff(dev, 0x68, fc2580_freq_regs_lut[i].r68_val);
 207         if (ret)
 208                 goto err;
 209
 210         ret = fc2580_wr_reg_ff(dev, 0x69, fc2580_freq_regs_lut[i].r69_val);
 211         if (ret)
 212                 goto err;
 213
 214         ret = fc2580_wr_reg_ff(dev, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
 215         if (ret)
 216                 goto err;
 217
 218         ret = fc2580_wr_reg_ff(dev, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
 219         if (ret)
 220                 goto err;
 221
 222         ret = fc2580_wr_reg_ff(dev, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
 223         if (ret)
 224                 goto err;
 225
 226         ret = fc2580_wr_reg_ff(dev, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
 227         if (ret)
 228                 goto err;
 229
 230         ret = fc2580_wr_reg_ff(dev, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
 231         if (ret)
 232                 goto err;
 233
 234         ret = fc2580_wr_reg_ff(dev, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
 235         if (ret)
 236                 goto err;
 237
 238         /* IF filters */
 239         for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
 240                 if (dev->f_bandwidth <= fc2580_if_filter_lut[i].freq)
 241                         break;
 242         }
 243         if (i == ARRAY_SIZE(fc2580_if_filter_lut)) {
 244                 ret = -EINVAL;
 245                 goto err;
 246         }
 247
 248         ret = regmap_write(dev->regmap, 0x36, fc2580_if_filter_lut[i].r36_val);
 249         if (ret)
 250                 goto err;
 251
 252         uitmp = (unsigned int) 8058000 - (dev->f_bandwidth * 122 / 100 / 2);
 253         uitmp = div64_u64((u64) dev->clk * uitmp, 1000000000000ULL);
 254         ret = regmap_write(dev->regmap, 0x37, uitmp);
 255         if (ret)
 256                 goto err;
 257
 258         ret = regmap_write(dev->regmap, 0x39, fc2580_if_filter_lut[i].r39_val);
 259         if (ret)
 260                 goto err;
 261
 262         timeout = jiffies + msecs_to_jiffies(30);
 263         for (uitmp = ~0xc0; !time_after(jiffies, timeout) && uitmp != 0xc0;) {
 264                 /* trigger filter */
 265                 ret = regmap_write(dev->regmap, 0x2e, 0x09);
 266                 if (ret)
 267                         goto err;
 268
 269                 /* locked when [7:6] are set (val: d7 6MHz, d5 7MHz, cd 8MHz) */
 270                 ret = regmap_read(dev->regmap, 0x2f, &uitmp);
 271                 if (ret)
 272                         goto err;
 273                 uitmp &= 0xc0;
 274
 275                 ret = regmap_write(dev->regmap, 0x2e, 0x01);
 276                 if (ret)
 277                         goto err;
 278         }
 279         if (uitmp != 0xc0)
 280                 dev_dbg(&client->dev, "filter did not lock %02x\n", uitmp);
 281
 282         return 0;
 283 err:
 284         dev_dbg(&client->dev, "failed=%d\n", ret);
 285         return ret;
 286 }
 287
 288 static int fc2580_init(struct fc2580_dev *dev)
 289 {
 290         struct i2c_client *client = dev->client;
 291         int ret, i;
 292
 293         dev_dbg(&client->dev, "\n");
 294
 295         for (i = 0; i < ARRAY_SIZE(fc2580_init_reg_vals); i++) {
 296                 ret = regmap_write(dev->regmap, fc2580_init_reg_vals[i].reg,
 297                                 fc2580_init_reg_vals[i].val);
 298                 if (ret)
 299                         goto err;
 300         }
 301
 302         dev->active = true;
 303         return 0;
 304 err:
 305         dev_dbg(&client->dev, "failed=%d\n", ret);
 306         return ret;
 307 }
 308
 309 static int fc2580_sleep(struct fc2580_dev *dev)
 310 {
 311         struct i2c_client *client = dev->client;
 312         int ret;
 313
 314         dev_dbg(&client->dev, "\n");
 315
 316         dev->active = false;
 317
 318         ret = regmap_write(dev->regmap, 0x02, 0x0a);
 319         if (ret)
 320                 goto err;
 321         return 0;
 322 err:
 323         dev_dbg(&client->dev, "failed=%d\n", ret);
 324         return ret;
 325 }
 326
 327 /*
 328  * DVB API
 329  */
 330 static int fc2580_dvb_set_params(struct dvb_frontend *fe)
 331 {
 332         struct fc2580_dev *dev = fe->tuner_priv;
 333         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 334
 335         dev->f_frequency = c->frequency;
 336         dev->f_bandwidth = c->bandwidth_hz;
 337         return fc2580_set_params(dev);
 338 }
 339
 340 static int fc2580_dvb_init(struct dvb_frontend *fe)
 341 {
 342         return fc2580_init(fe->tuner_priv);
 343 }
 344
 345 static int fc2580_dvb_sleep(struct dvb_frontend *fe)
 346 {
 347         return fc2580_sleep(fe->tuner_priv);
 348 }
 349
 350 static int fc2580_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 351 {
 352         *frequency = 0; /* Zero-IF */
 353         return 0;
 354 }
 355
 356 static const struct dvb_tuner_ops fc2580_dvb_tuner_ops = {
 357         .info = {
 358                 .name           = "FCI FC2580",
 359                 .frequency_min  = 174000000,
 360                 .frequency_max  = 862000000,
 361         },
 362
 363         .init = fc2580_dvb_init,
 364         .sleep = fc2580_dvb_sleep,
 365         .set_params = fc2580_dvb_set_params,
 366
 367         .get_if_frequency = fc2580_dvb_get_if_frequency,
 368 };
 369
 370 /*
 371  * V4L2 API
 372  */
 373 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 374 static const struct v4l2_frequency_band bands[] = {
 375         {
 376                 .type = V4L2_TUNER_RF,
 377                 .index = 0,
 378                 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
 379                 .rangelow   =   130000000,
 380                 .rangehigh  =  2000000000,
 381         },
 382 };
 383
 384 static inline struct fc2580_dev *fc2580_subdev_to_dev(struct v4l2_subdev *sd)
 385 {
 386         return container_of(sd, struct fc2580_dev, subdev);
 387 }
 388
 389 static int fc2580_s_power(struct v4l2_subdev *sd, int on)
 390 {
 391         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 392         struct i2c_client *client = dev->client;
 393         int ret;
 394
 395         dev_dbg(&client->dev, "on=%d\n", on);
 396
 397         if (on)
 398                 ret = fc2580_init(dev);
 399         else
 400                 ret = fc2580_sleep(dev);
 401         if (ret)
 402                 return ret;
 403
 404         return fc2580_set_params(dev);
 405 }
 406
 407 static const struct v4l2_subdev_core_ops fc2580_subdev_core_ops = {
 408         .s_power                  = fc2580_s_power,
 409 };
 410
 411 static int fc2580_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
 412 {
 413         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 414         struct i2c_client *client = dev->client;
 415
 416         dev_dbg(&client->dev, "index=%d\n", v->index);
 417
 418         strlcpy(v->name, "FCI FC2580", sizeof(v->name));
 419         v->type = V4L2_TUNER_RF;
 420         v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
 421         v->rangelow  = bands[0].rangelow;
 422         v->rangehigh = bands[0].rangehigh;
 423         return 0;
 424 }
 425
 426 static int fc2580_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
 427 {
 428         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 429         struct i2c_client *client = dev->client;
 430
 431         dev_dbg(&client->dev, "index=%d\n", v->index);
 432         return 0;
 433 }
 434
 435 static int fc2580_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
 436 {
 437         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 438         struct i2c_client *client = dev->client;
 439
 440         dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
 441         f->frequency = dev->f_frequency;
 442         return 0;
 443 }
 444
 445 static int fc2580_s_frequency(struct v4l2_subdev *sd,
 446                               const struct v4l2_frequency *f)
 447 {
 448         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 449         struct i2c_client *client = dev->client;
 450
 451         dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
 452                 f->tuner, f->type, f->frequency);
 453
 454         dev->f_frequency = clamp_t(unsigned int, f->frequency,
 455                                    bands[0].rangelow, bands[0].rangehigh);
 456         return fc2580_set_params(dev);
 457 }
 458
 459 static int fc2580_enum_freq_bands(struct v4l2_subdev *sd,
 460                                   struct v4l2_frequency_band *band)
 461 {
 462         struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
 463         struct i2c_client *client = dev->client;
 464
 465         dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
 466                 band->tuner, band->type, band->index);
 467
 468         if (band->index >= ARRAY_SIZE(bands))
 469                 return -EINVAL;
 470
 471         band->capability = bands[band->index].capability;
 472         band->rangelow = bands[band->index].rangelow;
 473         band->rangehigh = bands[band->index].rangehigh;
 474         return 0;
 475 }
 476
 477 static const struct v4l2_subdev_tuner_ops fc2580_subdev_tuner_ops = {
 478         .g_tuner                  = fc2580_g_tuner,
 479         .s_tuner                  = fc2580_s_tuner,
 480         .g_frequency              = fc2580_g_frequency,
 481         .s_frequency              = fc2580_s_frequency,
 482         .enum_freq_bands          = fc2580_enum_freq_bands,
 483 };
 484
 485 static const struct v4l2_subdev_ops fc2580_subdev_ops = {
 486         .core                     = &fc2580_subdev_core_ops,
 487         .tuner                    = &fc2580_subdev_tuner_ops,
 488 };
 489
 490 static int fc2580_s_ctrl(struct v4l2_ctrl *ctrl)
 491 {
 492         struct fc2580_dev *dev = container_of(ctrl->handler, struct fc2580_dev, hdl);
 493         struct i2c_client *client = dev->client;
 494         int ret;
 495
 496         dev_dbg(&client->dev, "ctrl: id=%d name=%s cur.val=%d val=%d\n",
 497                 ctrl->id, ctrl->name, ctrl->cur.val, ctrl->val);
 498
 499         switch (ctrl->id) {
 500         case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
 501         case V4L2_CID_RF_TUNER_BANDWIDTH:
 502                 /*
 503                  * TODO: Auto logic does not work 100% correctly as tuner driver
 504                  * do not have information to calculate maximum suitable
 505                  * bandwidth. Calculating it is responsible of master driver.
 506                  */
 507                 dev->f_bandwidth = dev->bandwidth->val;
 508                 ret = fc2580_set_params(dev);
 509                 break;
 510         default:
 511                 dev_dbg(&client->dev, "unknown ctrl");
 512                 ret = -EINVAL;
 513         }
 514         return ret;
 515 }
 516
 517 static const struct v4l2_ctrl_ops fc2580_ctrl_ops = {
 518         .s_ctrl = fc2580_s_ctrl,
 519 };
 520 #endif
 521
 522 static struct v4l2_subdev *fc2580_get_v4l2_subdev(struct i2c_client *client)
 523 {
 524         struct fc2580_dev *dev = i2c_get_clientdata(client);
 525
 526         if (dev->subdev.ops)
 527                 return &dev->subdev;
 528         else
 529                 return NULL;
 530 }
 531
 532 static int fc2580_probe(struct i2c_client *client,
 533                         const struct i2c_device_id *id)
 534 {
 535         struct fc2580_dev *dev;
 536         struct fc2580_platform_data *pdata = client->dev.platform_data;
 537         struct dvb_frontend *fe = pdata->dvb_frontend;
 538         int ret;
 539         unsigned int uitmp;
 540         static const struct regmap_config regmap_config = {
 541                 .reg_bits = 8,
 542                 .val_bits = 8,
 543         };
 544
 545         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 546         if (!dev) {
 547                 ret = -ENOMEM;
 548                 goto err;
 549         }
 550
 551         if (pdata->clk)
 552                 dev->clk = pdata->clk;
 553         else
 554                 dev->clk = 16384000; /* internal clock */
 555         dev->client = client;
 556         dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
 557         if (IS_ERR(dev->regmap)) {
 558                 ret = PTR_ERR(dev->regmap);
 559                 goto err_kfree;
 560         }
 561
 562         /* check if the tuner is there */
 563         ret = regmap_read(dev->regmap, 0x01, &uitmp);
 564         if (ret)
 565                 goto err_kfree;
 566
 567         dev_dbg(&client->dev, "chip_id=%02x\n", uitmp);
 568
 569         switch (uitmp) {
 570         case 0x56:
 571         case 0x5a:
 572                 break;
 573         default:
 574                 ret = -ENODEV;
 575                 goto err_kfree;
 576         }
 577
 578 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 579         /* Register controls */
 580         v4l2_ctrl_handler_init(&dev->hdl, 2);
 581         dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
 582                                                 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
 583                                                 0, 1, 1, 1);
 584         dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
 585                                            V4L2_CID_RF_TUNER_BANDWIDTH,
 586                                            3000, 10000000, 1, 3000);
 587         v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
 588         if (dev->hdl.error) {
 589                 ret = dev->hdl.error;
 590                 dev_err(&client->dev, "Could not initialize controls\n");
 591                 v4l2_ctrl_handler_free(&dev->hdl);
 592                 goto err_kfree;
 593         }
 594         dev->subdev.ctrl_handler = &dev->hdl;
 595         dev->f_frequency = bands[0].rangelow;
 596         dev->f_bandwidth = dev->bandwidth->val;
 597         v4l2_i2c_subdev_init(&dev->subdev, client, &fc2580_subdev_ops);
 598 #endif
 599         fe->tuner_priv = dev;
 600         memcpy(&fe->ops.tuner_ops, &fc2580_dvb_tuner_ops,
 601                sizeof(fe->ops.tuner_ops));
 602         pdata->get_v4l2_subdev = fc2580_get_v4l2_subdev;
 603         i2c_set_clientdata(client, dev);
 604
 605         dev_info(&client->dev, "FCI FC2580 successfully identified\n");
 606         return 0;
 607 err_kfree:
 608         kfree(dev);
 609 err:
 610         dev_dbg(&client->dev, "failed=%d\n", ret);
 611         return ret;
 612 }
 613
 614 static int fc2580_remove(struct i2c_client *client)
 615 {
 616         struct fc2580_dev *dev = i2c_get_clientdata(client);
 617
 618         dev_dbg(&client->dev, "\n");
 619
 620 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 621         v4l2_ctrl_handler_free(&dev->hdl);
 622 #endif
 623         kfree(dev);
 624         return 0;
 625 }
 626
 627 static const struct i2c_device_id fc2580_id_table[] = {
 628         {"fc2580", 0},
 629         {}
 630 };
 631 MODULE_DEVICE_TABLE(i2c, fc2580_id_table);
 632
 633 static struct i2c_driver fc2580_driver = {
 634         .driver = {
 635                 .name   = "fc2580",
 636                 .suppress_bind_attrs = true,
 637         },
 638         .probe          = fc2580_probe,
 639         .remove         = fc2580_remove,
 640         .id_table       = fc2580_id_table,
 641 };
 642
 643 module_i2c_driver(fc2580_driver);
 644
 645 MODULE_DESCRIPTION("FCI FC2580 silicon tuner driver");
 646 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 647 MODULE_LICENSE("GPL");