drivers/media/radio/radio-wl1273.c

   1 /*
   2  * Driver for the Texas Instruments WL1273 FM radio.
   3  *
   4  * Copyright (C) 2011 Nokia Corporation
   5  * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  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
  17 #include <linux/delay.h>
  18 #include <linux/firmware.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/mfd/wl1273-core.h>
  21 #include <linux/slab.h>
  22 #include <linux/module.h>
  23 #include <media/v4l2-common.h>
  24 #include <media/v4l2-ctrls.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ioctl.h>
  27
  28 #define DRIVER_DESC "Wl1273 FM Radio"
  29
  30 #define WL1273_POWER_SET_OFF            0
  31 #define WL1273_POWER_SET_FM             BIT(0)
  32 #define WL1273_POWER_SET_RDS            BIT(1)
  33 #define WL1273_POWER_SET_RETENTION      BIT(4)
  34
  35 #define WL1273_PUPD_SET_OFF             0x00
  36 #define WL1273_PUPD_SET_ON              0x01
  37 #define WL1273_PUPD_SET_RETENTION       0x10
  38
  39 #define WL1273_FREQ(x)          (x * 10000 / 625)
  40 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  41
  42 /*
  43  * static int radio_nr - The number of the radio device
  44  *
  45  * The default is 0.
  46  */
  47 static int radio_nr;
  48 module_param(radio_nr, int, 0);
  49 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  50
  51 struct wl1273_device {
  52         char *bus_type;
  53
  54         u8 forbidden;
  55         unsigned int preemphasis;
  56         unsigned int spacing;
  57         unsigned int tx_power;
  58         unsigned int rx_frequency;
  59         unsigned int tx_frequency;
  60         unsigned int rangelow;
  61         unsigned int rangehigh;
  62         unsigned int band;
  63         bool stereo;
  64
  65         /* RDS */
  66         unsigned int rds_on;
  67
  68         wait_queue_head_t read_queue;
  69         struct mutex lock; /* for serializing fm radio operations */
  70         struct completion busy;
  71
  72         unsigned char *buffer;
  73         unsigned int buf_size;
  74         unsigned int rd_index;
  75         unsigned int wr_index;
  76
  77         /* Selected interrupts */
  78         u16 irq_flags;
  79         u16 irq_received;
  80
  81         struct v4l2_ctrl_handler ctrl_handler;
  82         struct v4l2_device v4l2dev;
  83         struct video_device videodev;
  84         struct device *dev;
  85         struct wl1273_core *core;
  86         struct file *owner;
  87         char *write_buf;
  88         unsigned int rds_users;
  89 };
  90
  91 #define WL1273_IRQ_MASK  (WL1273_FR_EVENT               |       \
  92                           WL1273_POW_ENB_EVENT)
  93
  94 /*
  95  * static unsigned int rds_buf - the number of RDS buffer blocks used.
  96  *
  97  * The default number is 100.
  98  */
  99 static unsigned int rds_buf = 100;
 100 module_param(rds_buf, uint, 0);
 101 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
 102
 103 static int wl1273_fm_write_fw(struct wl1273_core *core,
 104                               __u8 *fw, int len)
 105 {
 106         struct i2c_client *client = core->client;
 107         struct i2c_msg msg;
 108         int i, r = 0;
 109
 110         msg.addr = client->addr;
 111         msg.flags = 0;
 112
 113         for (i = 0; i <= len; i++) {
 114                 msg.len = fw[0];
 115                 msg.buf = fw + 1;
 116
 117                 fw += msg.len + 1;
 118                 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
 119
 120                 r = i2c_transfer(client->adapter, &msg, 1);
 121                 if (r < 0 && i < len + 1)
 122                         break;
 123         }
 124
 125         dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
 126         dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
 127
 128         /* Last transfer always fails. */
 129         if (i == len || r == 1)
 130                 r = 0;
 131
 132         return r;
 133 }
 134
 135 #define WL1273_FIFO_HAS_DATA(status)    (1 << 5 & status)
 136 #define WL1273_RDS_CORRECTABLE_ERROR    (1 << 3)
 137 #define WL1273_RDS_UNCORRECTABLE_ERROR  (1 << 4)
 138
 139 static int wl1273_fm_rds(struct wl1273_device *radio)
 140 {
 141         struct wl1273_core *core = radio->core;
 142         struct i2c_client *client = core->client;
 143         u16 val;
 144         u8 b0 = WL1273_RDS_DATA_GET, status;
 145         struct v4l2_rds_data rds = { 0, 0, 0 };
 146         struct i2c_msg msg[] = {
 147                 {
 148                         .addr = client->addr,
 149                         .flags = 0,
 150                         .buf = &b0,
 151                         .len = 1,
 152                 },
 153                 {
 154                         .addr = client->addr,
 155                         .flags = I2C_M_RD,
 156                         .buf = (u8 *) &rds,
 157                         .len = sizeof(rds),
 158                 }
 159         };
 160         int r;
 161
 162         if (core->mode != WL1273_MODE_RX)
 163                 return 0;
 164
 165         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
 166         if (r)
 167                 return r;
 168
 169         if ((val & 0x01) == 0) {
 170                 /* RDS decoder not synchronized */
 171                 return -EAGAIN;
 172         }
 173
 174         /* copy all four RDS blocks to internal buffer */
 175         do {
 176                 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
 177                 if (r != ARRAY_SIZE(msg)) {
 178                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
 179                                 ": %s: read_rds error r == %i)\n",
 180                                 __func__, r);
 181                 }
 182
 183                 status = rds.block;
 184
 185                 if (!WL1273_FIFO_HAS_DATA(status))
 186                         break;
 187
 188                 /* copy bits 0-2 (the block ID) to bits 3-5 */
 189                 rds.block = V4L2_RDS_BLOCK_MSK & status;
 190                 rds.block |= rds.block << 3;
 191
 192                 /* copy the error bits to standard positions */
 193                 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
 194                         rds.block |= V4L2_RDS_BLOCK_ERROR;
 195                         rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
 196                 } else if  (WL1273_RDS_CORRECTABLE_ERROR & status) {
 197                         rds.block &= ~V4L2_RDS_BLOCK_ERROR;
 198                         rds.block |= V4L2_RDS_BLOCK_CORRECTED;
 199                 }
 200
 201                 /* copy RDS block to internal buffer */
 202                 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
 203                 radio->wr_index += 3;
 204
 205                 /* wrap write pointer */
 206                 if (radio->wr_index >= radio->buf_size)
 207                         radio->wr_index = 0;
 208
 209                 /* check for overflow & start over */
 210                 if (radio->wr_index == radio->rd_index) {
 211                         dev_dbg(radio->dev, "RDS OVERFLOW");
 212
 213                         radio->rd_index = 0;
 214                         radio->wr_index = 0;
 215                         break;
 216                 }
 217         } while (WL1273_FIFO_HAS_DATA(status));
 218
 219         /* wake up read queue */
 220         if (radio->wr_index != radio->rd_index)
 221                 wake_up_interruptible(&radio->read_queue);
 222
 223         return 0;
 224 }
 225
 226 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
 227 {
 228         struct wl1273_device *radio = dev_id;
 229         struct wl1273_core *core = radio->core;
 230         u16 flags;
 231         int r;
 232
 233         r = core->read(core, WL1273_FLAG_GET, &flags);
 234         if (r)
 235                 goto out;
 236
 237         if (flags & WL1273_BL_EVENT) {
 238                 radio->irq_received = flags;
 239                 dev_dbg(radio->dev, "IRQ: BL\n");
 240         }
 241
 242         if (flags & WL1273_RDS_EVENT) {
 243                 msleep(200);
 244
 245                 wl1273_fm_rds(radio);
 246         }
 247
 248         if (flags & WL1273_BBLK_EVENT)
 249                 dev_dbg(radio->dev, "IRQ: BBLK\n");
 250
 251         if (flags & WL1273_LSYNC_EVENT)
 252                 dev_dbg(radio->dev, "IRQ: LSYNC\n");
 253
 254         if (flags & WL1273_LEV_EVENT) {
 255                 u16 level;
 256
 257                 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
 258                 if (r)
 259                         goto out;
 260
 261                 if (level > 14)
 262                         dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
 263         }
 264
 265         if (flags & WL1273_IFFR_EVENT)
 266                 dev_dbg(radio->dev, "IRQ: IFFR\n");
 267
 268         if (flags & WL1273_PI_EVENT)
 269                 dev_dbg(radio->dev, "IRQ: PI\n");
 270
 271         if (flags & WL1273_PD_EVENT)
 272                 dev_dbg(radio->dev, "IRQ: PD\n");
 273
 274         if (flags & WL1273_STIC_EVENT)
 275                 dev_dbg(radio->dev, "IRQ: STIC\n");
 276
 277         if (flags & WL1273_MAL_EVENT)
 278                 dev_dbg(radio->dev, "IRQ: MAL\n");
 279
 280         if (flags & WL1273_POW_ENB_EVENT) {
 281                 complete(&radio->busy);
 282                 dev_dbg(radio->dev, "NOT BUSY\n");
 283                 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
 284         }
 285
 286         if (flags & WL1273_SCAN_OVER_EVENT)
 287                 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
 288
 289         if (flags & WL1273_ERROR_EVENT)
 290                 dev_dbg(radio->dev, "IRQ: ERROR\n");
 291
 292         if (flags & WL1273_FR_EVENT) {
 293                 u16 freq;
 294
 295                 dev_dbg(radio->dev, "IRQ: FR:\n");
 296
 297                 if (core->mode == WL1273_MODE_RX) {
 298                         r = core->write(core, WL1273_TUNER_MODE_SET,
 299                                         TUNER_MODE_STOP_SEARCH);
 300                         if (r) {
 301                                 dev_err(radio->dev,
 302                                         "%s: TUNER_MODE_SET fails: %d\n",
 303                                         __func__, r);
 304                                 goto out;
 305                         }
 306
 307                         r = core->read(core, WL1273_FREQ_SET, &freq);
 308                         if (r)
 309                                 goto out;
 310
 311                         if (radio->band == WL1273_BAND_JAPAN)
 312                                 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
 313                                         freq * 50;
 314                         else
 315                                 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
 316                                         freq * 50;
 317                         /*
 318                          *  The driver works better with this msleep,
 319                          *  the documentation doesn't mention it.
 320                          */
 321                         usleep_range(10000, 15000);
 322
 323                         dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
 324
 325                 } else {
 326                         r = core->read(core, WL1273_CHANL_SET, &freq);
 327                         if (r)
 328                                 goto out;
 329
 330                         dev_dbg(radio->dev, "%dkHz\n", freq);
 331                 }
 332                 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
 333         }
 334
 335 out:
 336         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 337         complete(&radio->busy);
 338
 339         return IRQ_HANDLED;
 340 }
 341
 342 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 343 {
 344         struct wl1273_core *core = radio->core;
 345         int r = 0;
 346         unsigned long t;
 347
 348         if (freq < WL1273_BAND_TX_LOW) {
 349                 dev_err(radio->dev,
 350                         "Frequency out of range: %d < %d\n", freq,
 351                         WL1273_BAND_TX_LOW);
 352                 return -ERANGE;
 353         }
 354
 355         if (freq > WL1273_BAND_TX_HIGH) {
 356                 dev_err(radio->dev,
 357                         "Frequency out of range: %d > %d\n", freq,
 358                         WL1273_BAND_TX_HIGH);
 359                 return -ERANGE;
 360         }
 361
 362         /*
 363          *  The driver works better with this sleep,
 364          *  the documentation doesn't mention it.
 365          */
 366         usleep_range(5000, 10000);
 367
 368         dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 369
 370         /* Set the current tx channel */
 371         r = core->write(core, WL1273_CHANL_SET, freq / 10);
 372         if (r)
 373                 return r;
 374
 375         reinit_completion(&radio->busy);
 376
 377         /* wait for the FR IRQ */
 378         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 379         if (!t)
 380                 return -ETIMEDOUT;
 381
 382         dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
 383
 384         /* Enable the output power */
 385         r = core->write(core, WL1273_POWER_ENB_SET, 1);
 386         if (r)
 387                 return r;
 388
 389         reinit_completion(&radio->busy);
 390
 391         /* wait for the POWER_ENB IRQ */
 392         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 393         if (!t)
 394                 return -ETIMEDOUT;
 395
 396         radio->tx_frequency = freq;
 397         dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
 398
 399         return  0;
 400 }
 401
 402 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 403 {
 404         struct wl1273_core *core = radio->core;
 405         int r, f;
 406         unsigned long t;
 407
 408         if (freq < radio->rangelow) {
 409                 dev_err(radio->dev,
 410                         "Frequency out of range: %d < %d\n", freq,
 411                         radio->rangelow);
 412                 r = -ERANGE;
 413                 goto err;
 414         }
 415
 416         if (freq > radio->rangehigh) {
 417                 dev_err(radio->dev,
 418                         "Frequency out of range: %d > %d\n", freq,
 419                         radio->rangehigh);
 420                 r = -ERANGE;
 421                 goto err;
 422         }
 423
 424         dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 425
 426         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 427
 428         if (radio->band == WL1273_BAND_JAPAN)
 429                 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 430         else
 431                 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 432
 433         r = core->write(core, WL1273_FREQ_SET, f);
 434         if (r) {
 435                 dev_err(radio->dev, "FREQ_SET fails\n");
 436                 goto err;
 437         }
 438
 439         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 440         if (r) {
 441                 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 442                 goto err;
 443         }
 444
 445         reinit_completion(&radio->busy);
 446
 447         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 448         if (!t) {
 449                 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 450                 return -ETIMEDOUT;
 451         }
 452
 453         radio->rd_index = 0;
 454         radio->wr_index = 0;
 455         radio->rx_frequency = freq;
 456         return 0;
 457 err:
 458         return r;
 459 }
 460
 461 static int wl1273_fm_get_freq(struct wl1273_device *radio)
 462 {
 463         struct wl1273_core *core = radio->core;
 464         unsigned int freq;
 465         u16 f;
 466         int r;
 467
 468         if (core->mode == WL1273_MODE_RX) {
 469                 r = core->read(core, WL1273_FREQ_SET, &f);
 470                 if (r)
 471                         return r;
 472
 473                 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 474                 if (radio->band == WL1273_BAND_JAPAN)
 475                         freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 476                 else
 477                         freq = WL1273_BAND_OTHER_LOW + 50 * f;
 478         } else {
 479                 r = core->read(core, WL1273_CHANL_SET, &f);
 480                 if (r)
 481                         return r;
 482
 483                 freq = f * 10;
 484         }
 485
 486         return freq;
 487 }
 488
 489 /**
 490  * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 491  * @radio:                              A pointer to the device struct.
 492  *
 493  * The firmware file consists of arrays of bytes where the first byte
 494  * gives the array length. The first byte in the file gives the
 495  * number of these arrays.
 496  */
 497 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 498 {
 499         struct wl1273_core *core = radio->core;
 500         unsigned int packet_num;
 501         const struct firmware *fw_p;
 502         const char *fw_name = "/*(DEBLOBBED)*/";
 503         struct device *dev = radio->dev;
 504         __u8 *ptr;
 505         int r;
 506
 507         dev_dbg(dev, "%s:\n", __func__);
 508
 509         /*
 510          * Uploading the firmware patch is not always necessary,
 511          * so we only print an info message.
 512          */
 513         if (reject_firmware(&fw_p, fw_name, dev)) {
 514                 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 515
 516                 return 0;
 517         }
 518
 519         ptr = (__u8 *) fw_p->data;
 520         packet_num = ptr[0];
 521         dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 522
 523         r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 524         if (r) {
 525                 dev_err(dev, "FW upload error: %d\n", r);
 526                 goto out;
 527         }
 528
 529         /* ignore possible error here */
 530         core->write(core, WL1273_RESET, 0);
 531
 532         dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 533 out:
 534         release_firmware(fw_p);
 535         return r;
 536 }
 537
 538 static int wl1273_fm_stop(struct wl1273_device *radio)
 539 {
 540         struct wl1273_core *core = radio->core;
 541
 542         if (core->mode == WL1273_MODE_RX) {
 543                 int r = core->write(core, WL1273_POWER_SET,
 544                                     WL1273_POWER_SET_OFF);
 545                 if (r)
 546                         dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 547                                 __func__, r);
 548         } else if (core->mode == WL1273_MODE_TX) {
 549                 int r = core->write(core, WL1273_PUPD_SET,
 550                                     WL1273_PUPD_SET_OFF);
 551                 if (r)
 552                         dev_err(radio->dev,
 553                                 "%s: PUPD_SET fails: %d\n", __func__, r);
 554         }
 555
 556         if (core->pdata->disable) {
 557                 core->pdata->disable();
 558                 dev_dbg(radio->dev, "Back to reset\n");
 559         }
 560
 561         return 0;
 562 }
 563
 564 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 565 {
 566         struct wl1273_core *core = radio->core;
 567         struct wl1273_fm_platform_data *pdata = core->pdata;
 568         struct device *dev = radio->dev;
 569         int r = -EINVAL;
 570
 571         if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 572                 dev_dbg(radio->dev, "Out of reset\n");
 573
 574                 pdata->enable();
 575                 msleep(250);
 576         }
 577
 578         if (new_mode == WL1273_MODE_RX) {
 579                 u16 val = WL1273_POWER_SET_FM;
 580
 581                 if (radio->rds_on)
 582                         val |= WL1273_POWER_SET_RDS;
 583
 584                 /* If this fails try again */
 585                 r = core->write(core, WL1273_POWER_SET, val);
 586                 if (r) {
 587                         msleep(100);
 588
 589                         r = core->write(core, WL1273_POWER_SET, val);
 590                         if (r) {
 591                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 592                                 goto fail;
 593                         }
 594                 }
 595
 596                 /* rds buffer configuration */
 597                 radio->wr_index = 0;
 598                 radio->rd_index = 0;
 599
 600         } else if (new_mode == WL1273_MODE_TX) {
 601                 /* If this fails try again once */
 602                 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 603                 if (r) {
 604                         msleep(100);
 605                         r = core->write(core, WL1273_PUPD_SET,
 606                                         WL1273_PUPD_SET_ON);
 607                         if (r) {
 608                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 609                                 goto fail;
 610                         }
 611                 }
 612
 613                 if (radio->rds_on) {
 614                         r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 615                         if (r) {
 616                                 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
 617                                         __func__);
 618                                 goto fail;
 619                         }
 620                 } else {
 621                         r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 622                         if (r) {
 623                                 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
 624                                         __func__);
 625                                 goto fail;
 626                         }
 627                 }
 628         } else {
 629                 dev_warn(dev, "%s: Illegal mode.\n", __func__);
 630         }
 631
 632         if (core->mode == WL1273_MODE_OFF) {
 633                 r = wl1273_fm_upload_firmware_patch(radio);
 634                 if (r)
 635                         dev_warn(dev, "Firmware upload failed.\n");
 636
 637                 /*
 638                  * Sometimes the chip is in a wrong power state at this point.
 639                  * So we set the power once again.
 640                  */
 641                 if (new_mode == WL1273_MODE_RX) {
 642                         u16 val = WL1273_POWER_SET_FM;
 643
 644                         if (radio->rds_on)
 645                                 val |= WL1273_POWER_SET_RDS;
 646
 647                         r = core->write(core, WL1273_POWER_SET, val);
 648                         if (r) {
 649                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 650                                 goto fail;
 651                         }
 652                 } else if (new_mode == WL1273_MODE_TX) {
 653                         r = core->write(core, WL1273_PUPD_SET,
 654                                         WL1273_PUPD_SET_ON);
 655                         if (r) {
 656                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 657                                 goto fail;
 658                         }
 659                 }
 660         }
 661
 662         return 0;
 663 fail:
 664         if (pdata->disable)
 665                 pdata->disable();
 666
 667         dev_dbg(dev, "%s: return: %d\n", __func__, r);
 668         return r;
 669 }
 670
 671 static int wl1273_fm_suspend(struct wl1273_device *radio)
 672 {
 673         struct wl1273_core *core = radio->core;
 674         int r = 0;
 675
 676         /* Cannot go from OFF to SUSPENDED */
 677         if (core->mode == WL1273_MODE_RX)
 678                 r = core->write(core, WL1273_POWER_SET,
 679                                 WL1273_POWER_SET_RETENTION);
 680         else if (core->mode == WL1273_MODE_TX)
 681                 r = core->write(core, WL1273_PUPD_SET,
 682                                 WL1273_PUPD_SET_RETENTION);
 683         else
 684                 r = -EINVAL;
 685
 686         if (r) {
 687                 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 688                 goto out;
 689         }
 690
 691 out:
 692         return r;
 693 }
 694
 695 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 696 {
 697         struct wl1273_core *core = radio->core;
 698         struct device *dev = radio->dev;
 699         int old_mode;
 700         int r;
 701
 702         dev_dbg(dev, "%s\n", __func__);
 703         dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 704
 705         old_mode = core->mode;
 706         if (mode & radio->forbidden) {
 707                 r = -EPERM;
 708                 goto out;
 709         }
 710
 711         switch (mode) {
 712         case WL1273_MODE_RX:
 713         case WL1273_MODE_TX:
 714                 r = wl1273_fm_start(radio, mode);
 715                 if (r) {
 716                         dev_err(dev, "%s: Cannot start.\n", __func__);
 717                         wl1273_fm_stop(radio);
 718                         goto out;
 719                 }
 720
 721                 core->mode = mode;
 722                 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 723                 if (r) {
 724                         dev_err(dev, "INT_MASK_SET fails.\n");
 725                         goto out;
 726                 }
 727
 728                 /* remember previous settings */
 729                 if (mode == WL1273_MODE_RX) {
 730                         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 731                         if (r) {
 732                                 dev_err(dev, "set freq fails: %d.\n", r);
 733                                 goto out;
 734                         }
 735
 736                         r = core->set_volume(core, core->volume);
 737                         if (r) {
 738                                 dev_err(dev, "set volume fails: %d.\n", r);
 739                                 goto out;
 740                         }
 741
 742                         dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 743                                 core->volume);
 744                 } else {
 745                         r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 746                         if (r) {
 747                                 dev_err(dev, "set freq fails: %d.\n", r);
 748                                 goto out;
 749                         }
 750                 }
 751
 752                 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 753
 754                 r = core->set_audio(core, core->audio_mode);
 755                 if (r)
 756                         dev_err(dev, "Cannot set audio mode.\n");
 757                 break;
 758
 759         case WL1273_MODE_OFF:
 760                 r = wl1273_fm_stop(radio);
 761                 if (r)
 762                         dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 763                 else
 764                         core->mode = WL1273_MODE_OFF;
 765
 766                 break;
 767
 768         case WL1273_MODE_SUSPENDED:
 769                 r = wl1273_fm_suspend(radio);
 770                 if (r)
 771                         dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 772                 else
 773                         core->mode = WL1273_MODE_SUSPENDED;
 774
 775                 break;
 776
 777         default:
 778                 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 779                 r = -EINVAL;
 780                 break;
 781         }
 782 out:
 783         if (r)
 784                 core->mode = old_mode;
 785
 786         return r;
 787 }
 788
 789 static int wl1273_fm_set_seek(struct wl1273_device *radio,
 790                               unsigned int wrap_around,
 791                               unsigned int seek_upward,
 792                               int level)
 793 {
 794         struct wl1273_core *core = radio->core;
 795         int r = 0;
 796         unsigned int dir = (seek_upward == 0) ? 0 : 1;
 797         unsigned int f;
 798
 799         f = radio->rx_frequency;
 800         dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 801
 802         if (dir && f + radio->spacing <= radio->rangehigh)
 803                 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 804         else if (dir && wrap_around)
 805                 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 806         else if (f - radio->spacing >= radio->rangelow)
 807                 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 808         else if (wrap_around)
 809                 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 810
 811         if (r)
 812                 goto out;
 813
 814         if (level < SCHAR_MIN || level > SCHAR_MAX)
 815                 return -EINVAL;
 816
 817         reinit_completion(&radio->busy);
 818         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 819
 820         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 821         if (r)
 822                 goto out;
 823
 824         dev_dbg(radio->dev, "%s\n", __func__);
 825
 826         r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 827         if (r)
 828                 goto out;
 829
 830         r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 831         if (r)
 832                 goto out;
 833
 834         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 835         if (r)
 836                 goto out;
 837
 838         /* wait for the FR IRQ */
 839         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 840         if (!(radio->irq_received & WL1273_BL_EVENT)) {
 841                 r = -ETIMEDOUT;
 842                 goto out;
 843         }
 844
 845         radio->irq_received &= ~WL1273_BL_EVENT;
 846
 847         if (!wrap_around)
 848                 goto out;
 849
 850         /* Wrap around */
 851         dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 852
 853         if (seek_upward)
 854                 f = radio->rangelow;
 855         else
 856                 f = radio->rangehigh;
 857
 858         r = wl1273_fm_set_rx_freq(radio, f);
 859         if (r)
 860                 goto out;
 861
 862         reinit_completion(&radio->busy);
 863         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 864
 865         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 866         if (r)
 867                 goto out;
 868
 869         /* wait for the FR IRQ */
 870         if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
 871                 r = -ETIMEDOUT;
 872 out:
 873         dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 874         return r;
 875 }
 876
 877 /**
 878  * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 879  * @radio:                      A pointer to the device struct.
 880  */
 881 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 882 {
 883         struct wl1273_core *core = radio->core;
 884         struct device *dev = radio->dev;
 885         u16 val;
 886         int r;
 887
 888         if (core->mode == WL1273_MODE_OFF ||
 889             core->mode == WL1273_MODE_SUSPENDED)
 890                 return -EPERM;
 891
 892         r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 893         if (r) {
 894                 dev_err(dev, "%s: read error: %d\n", __func__, r);
 895                 goto out;
 896         }
 897
 898 out:
 899         return val;
 900 }
 901
 902 /**
 903  * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 904  * @radio:                       A pointer to the device struct.
 905  * @preemphasis:                 The new pre-amphasis value.
 906  *
 907  * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 908  * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 909  */
 910 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 911                                      unsigned int preemphasis)
 912 {
 913         struct wl1273_core *core = radio->core;
 914         int r;
 915         u16 em;
 916
 917         if (core->mode == WL1273_MODE_OFF ||
 918             core->mode == WL1273_MODE_SUSPENDED)
 919                 return -EPERM;
 920
 921         mutex_lock(&core->lock);
 922
 923         switch (preemphasis) {
 924         case V4L2_PREEMPHASIS_DISABLED:
 925                 em = 1;
 926                 break;
 927         case V4L2_PREEMPHASIS_50_uS:
 928                 em = 0;
 929                 break;
 930         case V4L2_PREEMPHASIS_75_uS:
 931                 em = 2;
 932                 break;
 933         default:
 934                 r = -EINVAL;
 935                 goto out;
 936         }
 937
 938         r = core->write(core, WL1273_PREMPH_SET, em);
 939         if (r)
 940                 goto out;
 941
 942         radio->preemphasis = preemphasis;
 943
 944 out:
 945         mutex_unlock(&core->lock);
 946         return r;
 947 }
 948
 949 static int wl1273_fm_rds_on(struct wl1273_device *radio)
 950 {
 951         struct wl1273_core *core = radio->core;
 952         int r;
 953
 954         dev_dbg(radio->dev, "%s\n", __func__);
 955         if (radio->rds_on)
 956                 return 0;
 957
 958         r = core->write(core, WL1273_POWER_SET,
 959                         WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 960         if (r)
 961                 goto out;
 962
 963         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 964         if (r)
 965                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 966 out:
 967         return r;
 968 }
 969
 970 static int wl1273_fm_rds_off(struct wl1273_device *radio)
 971 {
 972         struct wl1273_core *core = radio->core;
 973         int r;
 974
 975         if (!radio->rds_on)
 976                 return 0;
 977
 978         radio->irq_flags &= ~WL1273_RDS_EVENT;
 979
 980         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 981         if (r)
 982                 goto out;
 983
 984         /* Service pending read */
 985         wake_up_interruptible(&radio->read_queue);
 986
 987         dev_dbg(radio->dev, "%s\n", __func__);
 988
 989         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 990         if (r)
 991                 goto out;
 992
 993         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 994         if (r)
 995                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 996 out:
 997         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 998
 999         return r;
1000 }
1001
1002 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
1003 {
1004         int r = 0;
1005         struct wl1273_core *core = radio->core;
1006
1007         if (core->mode == WL1273_MODE_OFF ||
1008             core->mode == WL1273_MODE_SUSPENDED)
1009                 return -EPERM;
1010
1011         if (new_mode == WL1273_RDS_RESET) {
1012                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1013                 return r;
1014         }
1015
1016         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1017                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1018         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1019                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1020         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1021                 r = wl1273_fm_rds_off(radio);
1022         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1023                 r = wl1273_fm_rds_on(radio);
1024         } else {
1025                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1026                         __func__, new_mode);
1027                 r = -EINVAL;
1028         }
1029
1030         if (!r)
1031                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1032
1033         return r;
1034 }
1035
1036 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1037                                     size_t count, loff_t *ppos)
1038 {
1039         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1040         struct wl1273_core *core = radio->core;
1041         u16 val;
1042         int r;
1043
1044         dev_dbg(radio->dev, "%s\n", __func__);
1045
1046         if (core->mode != WL1273_MODE_TX)
1047                 return count;
1048
1049         if (radio->rds_users == 0) {
1050                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1051                 return 0;
1052         }
1053
1054         if (mutex_lock_interruptible(&core->lock))
1055                 return -EINTR;
1056         /*
1057          * Multiple processes can open the device, but only
1058          * one gets to write to it.
1059          */
1060         if (radio->owner && radio->owner != file) {
1061                 r = -EBUSY;
1062                 goto out;
1063         }
1064         radio->owner = file;
1065
1066         /* Manual Mode */
1067         if (count > 255)
1068                 val = 255;
1069         else
1070                 val = count;
1071
1072         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1073
1074         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1075                 r = -EFAULT;
1076                 goto out;
1077         }
1078
1079         dev_dbg(radio->dev, "Count: %d\n", val);
1080         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1081
1082         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1083         core->write_data(core, radio->write_buf, val + 1);
1084
1085         r = val;
1086 out:
1087         mutex_unlock(&core->lock);
1088
1089         return r;
1090 }
1091
1092 static unsigned int wl1273_fm_fops_poll(struct file *file,
1093                                         struct poll_table_struct *pts)
1094 {
1095         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1096         struct wl1273_core *core = radio->core;
1097
1098         if (radio->owner && radio->owner != file)
1099                 return -EBUSY;
1100
1101         radio->owner = file;
1102
1103         if (core->mode == WL1273_MODE_RX) {
1104                 poll_wait(file, &radio->read_queue, pts);
1105
1106                 if (radio->rd_index != radio->wr_index)
1107                         return POLLIN | POLLRDNORM;
1108
1109         } else if (core->mode == WL1273_MODE_TX) {
1110                 return POLLOUT | POLLWRNORM;
1111         }
1112
1113         return 0;
1114 }
1115
1116 static int wl1273_fm_fops_open(struct file *file)
1117 {
1118         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1119         struct wl1273_core *core = radio->core;
1120         int r = 0;
1121
1122         dev_dbg(radio->dev, "%s\n", __func__);
1123
1124         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1125             !radio->rds_users) {
1126                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1127
1128                 if (mutex_lock_interruptible(&core->lock))
1129                         return -EINTR;
1130
1131                 radio->irq_flags |= WL1273_RDS_EVENT;
1132
1133                 r = core->write(core, WL1273_INT_MASK_SET,
1134                                 radio->irq_flags);
1135                 if (r) {
1136                         mutex_unlock(&core->lock);
1137                         goto out;
1138                 }
1139
1140                 radio->rds_users++;
1141
1142                 mutex_unlock(&core->lock);
1143         }
1144 out:
1145         return r;
1146 }
1147
1148 static int wl1273_fm_fops_release(struct file *file)
1149 {
1150         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1151         struct wl1273_core *core = radio->core;
1152         int r = 0;
1153
1154         dev_dbg(radio->dev, "%s\n", __func__);
1155
1156         if (radio->rds_users > 0) {
1157                 radio->rds_users--;
1158                 if (radio->rds_users == 0) {
1159                         mutex_lock(&core->lock);
1160
1161                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1162
1163                         if (core->mode == WL1273_MODE_RX) {
1164                                 r = core->write(core,
1165                                                 WL1273_INT_MASK_SET,
1166                                                 radio->irq_flags);
1167                                 if (r) {
1168                                         mutex_unlock(&core->lock);
1169                                         goto out;
1170                                 }
1171                         }
1172                         mutex_unlock(&core->lock);
1173                 }
1174         }
1175
1176         if (file == radio->owner)
1177                 radio->owner = NULL;
1178 out:
1179         return r;
1180 }
1181
1182 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1183                                    size_t count, loff_t *ppos)
1184 {
1185         int r = 0;
1186         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1187         struct wl1273_core *core = radio->core;
1188         unsigned int block_count = 0;
1189         u16 val;
1190
1191         dev_dbg(radio->dev, "%s\n", __func__);
1192
1193         if (core->mode != WL1273_MODE_RX)
1194                 return 0;
1195
1196         if (radio->rds_users == 0) {
1197                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1198                 return 0;
1199         }
1200
1201         if (mutex_lock_interruptible(&core->lock))
1202                 return -EINTR;
1203
1204         /*
1205          * Multiple processes can open the device, but only
1206          * one at a time gets read access.
1207          */
1208         if (radio->owner && radio->owner != file) {
1209                 r = -EBUSY;
1210                 goto out;
1211         }
1212         radio->owner = file;
1213
1214         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1215         if (r) {
1216                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1217                 goto out;
1218         } else if (val == 0) {
1219                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1220                 r = -ENODATA;
1221                 goto out;
1222         }
1223
1224         /* block if no new data available */
1225         while (radio->wr_index == radio->rd_index) {
1226                 if (file->f_flags & O_NONBLOCK) {
1227                         r = -EWOULDBLOCK;
1228                         goto out;
1229                 }
1230
1231                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1232                 if (wait_event_interruptible(radio->read_queue,
1233                                              radio->wr_index !=
1234                                              radio->rd_index) < 0) {
1235                         r = -EINTR;
1236                         goto out;
1237                 }
1238         }
1239
1240         /* calculate block count from byte count */
1241         count /= RDS_BLOCK_SIZE;
1242
1243         /* copy RDS blocks from the internal buffer and to user buffer */
1244         while (block_count < count) {
1245                 if (radio->rd_index == radio->wr_index)
1246                         break;
1247
1248                 /* always transfer complete RDS blocks */
1249                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1250                                  RDS_BLOCK_SIZE))
1251                         break;
1252
1253                 /* increment and wrap the read pointer */
1254                 radio->rd_index += RDS_BLOCK_SIZE;
1255                 if (radio->rd_index >= radio->buf_size)
1256                         radio->rd_index = 0;
1257
1258                 /* increment counters */
1259                 block_count++;
1260                 buf += RDS_BLOCK_SIZE;
1261                 r += RDS_BLOCK_SIZE;
1262         }
1263
1264 out:
1265         dev_dbg(radio->dev, "%s: exit\n", __func__);
1266         mutex_unlock(&core->lock);
1267
1268         return r;
1269 }
1270
1271 static const struct v4l2_file_operations wl1273_fops = {
1272         .owner          = THIS_MODULE,
1273         .read           = wl1273_fm_fops_read,
1274         .write          = wl1273_fm_fops_write,
1275         .poll           = wl1273_fm_fops_poll,
1276         .unlocked_ioctl = video_ioctl2,
1277         .open           = wl1273_fm_fops_open,
1278         .release        = wl1273_fm_fops_release,
1279 };
1280
1281 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1282                                      struct v4l2_capability *capability)
1283 {
1284         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1285
1286         dev_dbg(radio->dev, "%s\n", __func__);
1287
1288         strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1289                 sizeof(capability->driver));
1290         strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1291                 sizeof(capability->card));
1292         strlcpy(capability->bus_info, radio->bus_type,
1293                 sizeof(capability->bus_info));
1294
1295         capability->device_caps = V4L2_CAP_HW_FREQ_SEEK |
1296                 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1297                 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1298                 V4L2_CAP_RDS_OUTPUT;
1299         capability->capabilities = capability->device_caps |
1300                 V4L2_CAP_DEVICE_CAPS;
1301
1302         return 0;
1303 }
1304
1305 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1306                                     unsigned int *i)
1307 {
1308         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1309
1310         dev_dbg(radio->dev, "%s\n", __func__);
1311
1312         *i = 0;
1313
1314         return 0;
1315 }
1316
1317 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1318                                     unsigned int i)
1319 {
1320         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1321
1322         dev_dbg(radio->dev, "%s\n", __func__);
1323
1324         if (i != 0)
1325                 return -EINVAL;
1326
1327         return 0;
1328 }
1329
1330 /**
1331  * wl1273_fm_set_tx_power() -   Set the transmission power value.
1332  * @core:                       A pointer to the device struct.
1333  * @power:                      The new power value.
1334  */
1335 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1336 {
1337         struct wl1273_core *core = radio->core;
1338         int r;
1339
1340         if (core->mode == WL1273_MODE_OFF ||
1341             core->mode == WL1273_MODE_SUSPENDED)
1342                 return -EPERM;
1343
1344         mutex_lock(&core->lock);
1345
1346         /* Convert the dBuV value to chip presentation */
1347         r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1348         if (r)
1349                 goto out;
1350
1351         radio->tx_power = power;
1352
1353 out:
1354         mutex_unlock(&core->lock);
1355         return r;
1356 }
1357
1358 #define WL1273_SPACING_50kHz    1
1359 #define WL1273_SPACING_100kHz   2
1360 #define WL1273_SPACING_200kHz   4
1361
1362 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1363                                     unsigned int spacing)
1364 {
1365         struct wl1273_core *core = radio->core;
1366         int r;
1367
1368         if (spacing == 0) {
1369                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1370                                 WL1273_SPACING_100kHz);
1371                 radio->spacing = 100;
1372         } else if (spacing - 50000 < 25000) {
1373                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1374                                 WL1273_SPACING_50kHz);
1375                 radio->spacing = 50;
1376         } else if (spacing - 100000 < 50000) {
1377                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1378                                 WL1273_SPACING_100kHz);
1379                 radio->spacing = 100;
1380         } else {
1381                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1382                                 WL1273_SPACING_200kHz);
1383                 radio->spacing = 200;
1384         }
1385
1386         return r;
1387 }
1388
1389 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1390 {
1391         struct wl1273_device *radio = ctrl->priv;
1392         struct wl1273_core *core = radio->core;
1393
1394         dev_dbg(radio->dev, "%s\n", __func__);
1395
1396         if (mutex_lock_interruptible(&core->lock))
1397                 return -EINTR;
1398
1399         switch (ctrl->id) {
1400         case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1401                 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1402                 break;
1403
1404         default:
1405                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1406                          __func__, ctrl->id);
1407                 break;
1408         }
1409
1410         mutex_unlock(&core->lock);
1411
1412         return 0;
1413 }
1414
1415 #define WL1273_MUTE_SOFT_ENABLE    (1 << 0)
1416 #define WL1273_MUTE_AC             (1 << 1)
1417 #define WL1273_MUTE_HARD_LEFT      (1 << 2)
1418 #define WL1273_MUTE_HARD_RIGHT     (1 << 3)
1419 #define WL1273_MUTE_SOFT_FORCE     (1 << 4)
1420
1421 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1422 {
1423         return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1424 }
1425
1426 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1427 {
1428         struct wl1273_device *radio = to_radio(ctrl);
1429         struct wl1273_core *core = radio->core;
1430         int r = 0;
1431
1432         dev_dbg(radio->dev, "%s\n", __func__);
1433
1434         switch (ctrl->id) {
1435         case V4L2_CID_AUDIO_MUTE:
1436                 if (mutex_lock_interruptible(&core->lock))
1437                         return -EINTR;
1438
1439                 if (core->mode == WL1273_MODE_RX && ctrl->val)
1440                         r = core->write(core,
1441                                         WL1273_MUTE_STATUS_SET,
1442                                         WL1273_MUTE_HARD_LEFT |
1443                                         WL1273_MUTE_HARD_RIGHT);
1444                 else if (core->mode == WL1273_MODE_RX)
1445                         r = core->write(core,
1446                                         WL1273_MUTE_STATUS_SET, 0x0);
1447                 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1448                         r = core->write(core, WL1273_MUTE, 1);
1449                 else if (core->mode == WL1273_MODE_TX)
1450                         r = core->write(core, WL1273_MUTE, 0);
1451
1452                 mutex_unlock(&core->lock);
1453                 break;
1454
1455         case V4L2_CID_AUDIO_VOLUME:
1456                 if (ctrl->val == 0)
1457                         r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1458                 else
1459                         r =  core->set_volume(core, core->volume);
1460                 break;
1461
1462         case V4L2_CID_TUNE_PREEMPHASIS:
1463                 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1464                 break;
1465
1466         case V4L2_CID_TUNE_POWER_LEVEL:
1467                 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1468                 break;
1469
1470         default:
1471                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1472                          __func__, ctrl->id);
1473                 break;
1474         }
1475
1476         dev_dbg(radio->dev, "%s\n", __func__);
1477         return r;
1478 }
1479
1480 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1481                                     struct v4l2_audio *audio)
1482 {
1483         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1484
1485         dev_dbg(radio->dev, "%s\n", __func__);
1486
1487         if (audio->index > 1)
1488                 return -EINVAL;
1489
1490         strlcpy(audio->name, "Radio", sizeof(audio->name));
1491         audio->capability = V4L2_AUDCAP_STEREO;
1492
1493         return 0;
1494 }
1495
1496 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1497                                     const struct v4l2_audio *audio)
1498 {
1499         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1500
1501         dev_dbg(radio->dev, "%s\n", __func__);
1502
1503         if (audio->index != 0)
1504                 return -EINVAL;
1505
1506         return 0;
1507 }
1508
1509 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1510 #define WL1273_RDS_SYNCHRONIZED 1
1511
1512 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1513                                     struct v4l2_tuner *tuner)
1514 {
1515         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1516         struct wl1273_core *core = radio->core;
1517         u16 val;
1518         int r;
1519
1520         dev_dbg(radio->dev, "%s\n", __func__);
1521
1522         if (tuner->index > 0)
1523                 return -EINVAL;
1524
1525         strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1526         tuner->type = V4L2_TUNER_RADIO;
1527
1528         tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1529         tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1530
1531         tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1532                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1533                 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1534
1535         if (radio->stereo)
1536                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1537         else
1538                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1539
1540         if (core->mode != WL1273_MODE_RX)
1541                 return 0;
1542
1543         if (mutex_lock_interruptible(&core->lock))
1544                 return -EINTR;
1545
1546         r = core->read(core, WL1273_STEREO_GET, &val);
1547         if (r)
1548                 goto out;
1549
1550         if (val == 1)
1551                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1552         else
1553                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1554
1555         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1556         if (r)
1557                 goto out;
1558
1559         tuner->signal = (s16) val;
1560         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1561
1562         tuner->afc = 0;
1563
1564         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1565         if (r)
1566                 goto out;
1567
1568         if (val == WL1273_RDS_SYNCHRONIZED)
1569                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1570 out:
1571         mutex_unlock(&core->lock);
1572
1573         return r;
1574 }
1575
1576 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1577                                     const struct v4l2_tuner *tuner)
1578 {
1579         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1580         struct wl1273_core *core = radio->core;
1581         int r = 0;
1582
1583         dev_dbg(radio->dev, "%s\n", __func__);
1584         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1585         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1586         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1587         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1588         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1589         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1590
1591         if (tuner->index > 0)
1592                 return -EINVAL;
1593
1594         if (mutex_lock_interruptible(&core->lock))
1595                 return -EINTR;
1596
1597         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1598         if (r)
1599                 goto out;
1600
1601         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1602                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1603         else
1604                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1605
1606         if (r)
1607                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1608
1609         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1610                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1611                 if (r < 0) {
1612                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1613                                  __func__, r);
1614                         goto out;
1615                 }
1616                 radio->stereo = false;
1617         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1618                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1619                 if (r < 0) {
1620                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1621                                  __func__, r);
1622                         goto out;
1623                 }
1624                 radio->stereo = true;
1625         } else {
1626                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1627                          __func__, tuner->audmode);
1628                 r = -EINVAL;
1629                 goto out;
1630         }
1631
1632 out:
1633         mutex_unlock(&core->lock);
1634
1635         return r;
1636 }
1637
1638 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1639                                         struct v4l2_frequency *freq)
1640 {
1641         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1642         struct wl1273_core *core = radio->core;
1643
1644         dev_dbg(radio->dev, "%s\n", __func__);
1645
1646         if (mutex_lock_interruptible(&core->lock))
1647                 return -EINTR;
1648
1649         freq->type = V4L2_TUNER_RADIO;
1650         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1651
1652         mutex_unlock(&core->lock);
1653
1654         return 0;
1655 }
1656
1657 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1658                                         const struct v4l2_frequency *freq)
1659 {
1660         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1661         struct wl1273_core *core = radio->core;
1662         int r;
1663
1664         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1665
1666         if (freq->type != V4L2_TUNER_RADIO) {
1667                 dev_dbg(radio->dev,
1668                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1669                 return -EINVAL;
1670         }
1671
1672         if (mutex_lock_interruptible(&core->lock))
1673                 return -EINTR;
1674
1675         if (core->mode == WL1273_MODE_RX) {
1676                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1677
1678                 r = wl1273_fm_set_rx_freq(radio,
1679                                           WL1273_INV_FREQ(freq->frequency));
1680                 if (r)
1681                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1682                                  ": set frequency failed with %d\n", r);
1683         } else {
1684                 r = wl1273_fm_set_tx_freq(radio,
1685                                           WL1273_INV_FREQ(freq->frequency));
1686                 if (r)
1687                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1688                                  ": set frequency failed with %d\n", r);
1689         }
1690
1691         mutex_unlock(&core->lock);
1692
1693         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1694         return r;
1695 }
1696
1697 #define WL1273_DEFAULT_SEEK_LEVEL       7
1698
1699 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1700                                            const struct v4l2_hw_freq_seek *seek)
1701 {
1702         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1703         struct wl1273_core *core = radio->core;
1704         int r;
1705
1706         dev_dbg(radio->dev, "%s\n", __func__);
1707
1708         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1709                 return -EINVAL;
1710
1711         if (file->f_flags & O_NONBLOCK)
1712                 return -EWOULDBLOCK;
1713
1714         if (mutex_lock_interruptible(&core->lock))
1715                 return -EINTR;
1716
1717         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1718         if (r)
1719                 goto out;
1720
1721         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1722         if (r)
1723                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1724
1725         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1726                                WL1273_DEFAULT_SEEK_LEVEL);
1727         if (r)
1728                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1729
1730 out:
1731         mutex_unlock(&core->lock);
1732         return r;
1733 }
1734
1735 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1736                                         const struct v4l2_modulator *modulator)
1737 {
1738         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1739         struct wl1273_core *core = radio->core;
1740         int r = 0;
1741
1742         dev_dbg(radio->dev, "%s\n", __func__);
1743
1744         if (modulator->index > 0)
1745                 return -EINVAL;
1746
1747         if (mutex_lock_interruptible(&core->lock))
1748                 return -EINTR;
1749
1750         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1751         if (r)
1752                 goto out;
1753
1754         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1755                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1756         else
1757                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1758
1759         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1760                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1761         else
1762                 r = core->write(core, WL1273_MONO_SET,
1763                                 WL1273_RX_STEREO);
1764         if (r < 0)
1765                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1766                          "MONO_SET fails: %d\n", r);
1767 out:
1768         mutex_unlock(&core->lock);
1769
1770         return r;
1771 }
1772
1773 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1774                                         struct v4l2_modulator *modulator)
1775 {
1776         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1777         struct wl1273_core *core = radio->core;
1778         u16 val;
1779         int r;
1780
1781         dev_dbg(radio->dev, "%s\n", __func__);
1782
1783         strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1784                 sizeof(modulator->name));
1785
1786         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1787         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1788
1789         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1790                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1791
1792         if (core->mode != WL1273_MODE_TX)
1793                 return 0;
1794
1795         if (mutex_lock_interruptible(&core->lock))
1796                 return -EINTR;
1797
1798         r = core->read(core, WL1273_MONO_SET, &val);
1799         if (r)
1800                 goto out;
1801
1802         if (val == WL1273_TX_STEREO)
1803                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1804         else
1805                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1806
1807         if (radio->rds_on)
1808                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1809 out:
1810         mutex_unlock(&core->lock);
1811
1812         return 0;
1813 }
1814
1815 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1816 {
1817         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1818         struct wl1273_core *core = radio->core;
1819         struct device *dev = radio->dev;
1820         u16 val;
1821         int r;
1822
1823         dev_info(dev, DRIVER_DESC);
1824
1825         if (core->mode == WL1273_MODE_OFF) {
1826                 dev_info(dev, "Mode: Off\n");
1827                 return 0;
1828         }
1829
1830         if (core->mode == WL1273_MODE_SUSPENDED) {
1831                 dev_info(dev, "Mode: Suspended\n");
1832                 return 0;
1833         }
1834
1835         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1836         if (r)
1837                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1838         else
1839                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1840
1841         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1842         if (r)
1843                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1844         else
1845                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1846
1847         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1848         if (r)
1849                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1850         else
1851                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1852
1853         r = core->read(core, WL1273_BAND_SET, &val);
1854         if (r)
1855                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1856         else
1857                 dev_info(dev, "BAND: %d\n", val);
1858
1859         if (core->mode == WL1273_MODE_TX) {
1860                 r = core->read(core, WL1273_PUPD_SET, &val);
1861                 if (r)
1862                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1863                 else
1864                         dev_info(dev, "PUPD: 0x%04x\n", val);
1865
1866                 r = core->read(core, WL1273_CHANL_SET, &val);
1867                 if (r)
1868                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1869                 else
1870                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1871         } else if (core->mode == WL1273_MODE_RX) {
1872                 int bf = radio->rangelow;
1873
1874                 r = core->read(core, WL1273_FREQ_SET, &val);
1875                 if (r)
1876                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1877                 else
1878                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1879
1880                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1881                 if (r)
1882                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1883                                 __func__);
1884                 else if (val == 0)
1885                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1886                 else if (val == 1)
1887                         dev_info(dev, "MOST_MODE: Force mono output\n");
1888                 else
1889                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1890
1891                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1892                 if (r)
1893                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1894                 else if (val == 0)
1895                         dev_info(dev,
1896                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1897                 else if (val == 1)
1898                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1899                 else
1900                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1901
1902                 r = core->read(core, WL1273_STEREO_GET, &val);
1903                 if (r)
1904                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1905                 else if (val == 0)
1906                         dev_info(dev, "STEREO: Not detected\n");
1907                 else if (val == 1)
1908                         dev_info(dev, "STEREO: Detected\n");
1909                 else
1910                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1911
1912                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1913                 if (r)
1914                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1915                 else
1916                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1917
1918                 r = core->read(core, WL1273_POWER_SET, &val);
1919                 if (r)
1920                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1921                 else
1922                         dev_info(dev, "POWER: 0x%04x\n", val);
1923
1924                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1925                 if (r)
1926                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1927                 else
1928                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1929
1930                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1931                 if (r)
1932                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1933                                 __func__);
1934                 else if (val == 0)
1935                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1936
1937                 else if (val == 1)
1938                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1939                 else
1940                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1941
1942                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1943                 if (r)
1944                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1945                                 __func__);
1946                 else
1947                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1948
1949                 r = core->read(core, WL1273_VOLUME_SET, &val);
1950                 if (r)
1951                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1952                 else
1953                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1954         }
1955
1956         return 0;
1957 }
1958
1959 static void wl1273_vdev_release(struct video_device *dev)
1960 {
1961 }
1962
1963 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1964         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1965         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1966 };
1967
1968 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1969         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1970         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1971         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1972         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1973         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1974         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1975         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1976         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1977         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1978         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1979         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1980         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1981         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1982 };
1983
1984 static const struct video_device wl1273_viddev_template = {
1985         .fops                   = &wl1273_fops,
1986         .ioctl_ops              = &wl1273_ioctl_ops,
1987         .name                   = WL1273_FM_DRIVER_NAME,
1988         .release                = wl1273_vdev_release,
1989         .vfl_dir                = VFL_DIR_TX,
1990 };
1991
1992 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1993 {
1994         struct wl1273_device *radio = platform_get_drvdata(pdev);
1995         struct wl1273_core *core = radio->core;
1996
1997         dev_info(&pdev->dev, "%s.\n", __func__);
1998
1999         free_irq(core->client->irq, radio);
2000         core->pdata->free_resources();
2001
2002         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2003         video_unregister_device(&radio->videodev);
2004         v4l2_device_unregister(&radio->v4l2dev);
2005
2006         return 0;
2007 }
2008
2009 static int wl1273_fm_radio_probe(struct platform_device *pdev)
2010 {
2011         struct wl1273_core **core = pdev->dev.platform_data;
2012         struct wl1273_device *radio;
2013         struct v4l2_ctrl *ctrl;
2014         int r = 0;
2015
2016         pr_debug("%s\n", __func__);
2017
2018         if (!core) {
2019                 dev_err(&pdev->dev, "No platform data.\n");
2020                 r = -EINVAL;
2021                 goto pdata_err;
2022         }
2023
2024         radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2025         if (!radio) {
2026                 r = -ENOMEM;
2027                 goto pdata_err;
2028         }
2029
2030         /* RDS buffer allocation */
2031         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2032         radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2033         if (!radio->buffer) {
2034                 pr_err("Cannot allocate memory for RDS buffer.\n");
2035                 r = -ENOMEM;
2036                 goto pdata_err;
2037         }
2038
2039         radio->core = *core;
2040         radio->irq_flags = WL1273_IRQ_MASK;
2041         radio->dev = &radio->core->client->dev;
2042         radio->rds_on = false;
2043         radio->core->mode = WL1273_MODE_OFF;
2044         radio->tx_power = 118;
2045         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2046         radio->band = WL1273_BAND_OTHER;
2047         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2048         radio->core->channel_number = 2;
2049         radio->core->volume = WL1273_DEFAULT_VOLUME;
2050         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2051         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2052         radio->rangelow = WL1273_BAND_OTHER_LOW;
2053         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2054         radio->stereo = true;
2055         radio->bus_type = "I2C";
2056
2057         if (radio->core->pdata->request_resources) {
2058                 r = radio->core->pdata->request_resources(radio->core->client);
2059                 if (r) {
2060                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2061                                 ": Cannot get platform data\n");
2062                         goto pdata_err;
2063                 }
2064
2065                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2066
2067                 r = request_threaded_irq(radio->core->client->irq, NULL,
2068                                          wl1273_fm_irq_thread_handler,
2069                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2070                                          "wl1273-fm", radio);
2071                 if (r < 0) {
2072                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2073                                 ": Unable to register IRQ handler: %d\n", r);
2074                         goto err_request_irq;
2075                 }
2076         } else {
2077                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");
2078                 r = -EINVAL;
2079                 goto pdata_err;
2080         }
2081
2082         init_completion(&radio->busy);
2083         init_waitqueue_head(&radio->read_queue);
2084
2085         radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2086         if (!radio->write_buf) {
2087                 r = -ENOMEM;
2088                 goto write_buf_err;
2089         }
2090
2091         radio->dev = &pdev->dev;
2092         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2093         radio->rds_users = 0;
2094
2095         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2096         if (r) {
2097                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2098                 goto write_buf_err;
2099         }
2100
2101         /* V4L2 configuration */
2102         radio->videodev = wl1273_viddev_template;
2103
2104         radio->videodev.v4l2_dev = &radio->v4l2dev;
2105
2106         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2107
2108         /* add in ascending ID order */
2109         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2110                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2111                           WL1273_DEFAULT_VOLUME);
2112
2113         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2114                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2115
2116         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2117                                V4L2_CID_TUNE_PREEMPHASIS,
2118                                V4L2_PREEMPHASIS_75_uS, 0x03,
2119                                V4L2_PREEMPHASIS_50_uS);
2120
2121         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2122                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2123
2124         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2125                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2126                                  0, 255, 1, 255);
2127         if (ctrl)
2128                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2129
2130         if (radio->ctrl_handler.error) {
2131                 r = radio->ctrl_handler.error;
2132                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2133                 goto handler_init_err;
2134         }
2135
2136         video_set_drvdata(&radio->videodev, radio);
2137         platform_set_drvdata(pdev, radio);
2138
2139         /* register video device */
2140         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2141         if (r) {
2142                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2143                         ": Could not register video device\n");
2144                 goto handler_init_err;
2145         }
2146
2147         return 0;
2148
2149 handler_init_err:
2150         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2151         v4l2_device_unregister(&radio->v4l2dev);
2152 write_buf_err:
2153         free_irq(radio->core->client->irq, radio);
2154 err_request_irq:
2155         radio->core->pdata->free_resources();
2156 pdata_err:
2157         return r;
2158 }
2159
2160 static struct platform_driver wl1273_fm_radio_driver = {
2161         .probe          = wl1273_fm_radio_probe,
2162         .remove         = wl1273_fm_radio_remove,
2163         .driver         = {
2164                 .name   = "wl1273_fm_radio",
2165         },
2166 };
2167
2168 module_platform_driver(wl1273_fm_radio_driver);
2169
2170 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2171 MODULE_DESCRIPTION(DRIVER_DESC);
2172 MODULE_LICENSE("GPL");
2173 MODULE_ALIAS("platform:wl1273_fm_radio");