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  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include <linux/delay.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/mfd/wl1273-core.h>
  25 #include <linux/slab.h>
  26 #include <media/v4l2-common.h>
  27 #include <media/v4l2-ctrls.h>
  28 #include <media/v4l2-device.h>
  29 #include <media/v4l2-ioctl.h>
  30
  31 #define DRIVER_DESC "Wl1273 FM Radio"
  32
  33 #define WL1273_POWER_SET_OFF            0
  34 #define WL1273_POWER_SET_FM             BIT(0)
  35 #define WL1273_POWER_SET_RDS            BIT(1)
  36 #define WL1273_POWER_SET_RETENTION      BIT(4)
  37
  38 #define WL1273_PUPD_SET_OFF             0x00
  39 #define WL1273_PUPD_SET_ON              0x01
  40 #define WL1273_PUPD_SET_RETENTION       0x10
  41
  42 #define WL1273_FREQ(x)          (x * 10000 / 625)
  43 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  44
  45 /*
  46  * static int radio_nr - The number of the radio device
  47  *
  48  * The default is 0.
  49  */
  50 static int radio_nr;
  51 module_param(radio_nr, int, 0);
  52 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  53
  54 struct wl1273_device {
  55         char *bus_type;
  56
  57         u8 forbidden;
  58         unsigned int preemphasis;
  59         unsigned int spacing;
  60         unsigned int tx_power;
  61         unsigned int rx_frequency;
  62         unsigned int tx_frequency;
  63         unsigned int rangelow;
  64         unsigned int rangehigh;
  65         unsigned int band;
  66         bool stereo;
  67
  68         /* RDS */
  69         unsigned int rds_on;
  70         struct delayed_work work;
  71
  72         wait_queue_head_t read_queue;
  73         struct mutex lock; /* for serializing fm radio operations */
  74         struct completion busy;
  75
  76         unsigned char *buffer;
  77         unsigned int buf_size;
  78         unsigned int rd_index;
  79         unsigned int wr_index;
  80
  81         /* Selected interrupts */
  82         u16 irq_flags;
  83         u16 irq_received;
  84
  85         struct v4l2_ctrl_handler ctrl_handler;
  86         struct v4l2_device v4l2dev;
  87         struct video_device videodev;
  88         struct device *dev;
  89         struct wl1273_core *core;
  90         struct file *owner;
  91         char *write_buf;
  92         unsigned int rds_users;
  93 };
  94
  95 #define WL1273_IRQ_MASK  (WL1273_FR_EVENT               |       \
  96                           WL1273_POW_ENB_EVENT)
  97
  98 /*
  99  * static unsigned int rds_buf - the number of RDS buffer blocks used.
 100  *
 101  * The default number is 100.
 102  */
 103 static unsigned int rds_buf = 100;
 104 module_param(rds_buf, uint, 0);
 105 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
 106
 107 static int wl1273_fm_write_fw(struct wl1273_core *core,
 108                               __u8 *fw, int len)
 109 {
 110         struct i2c_client *client = core->client;
 111         struct i2c_msg msg;
 112         int i, r = 0;
 113
 114         msg.addr = client->addr;
 115         msg.flags = 0;
 116
 117         for (i = 0; i <= len; i++) {
 118                 msg.len = fw[0];
 119                 msg.buf = fw + 1;
 120
 121                 fw += msg.len + 1;
 122                 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
 123
 124                 r = i2c_transfer(client->adapter, &msg, 1);
 125                 if (r < 0 && i < len + 1)
 126                         break;
 127         }
 128
 129         dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
 130         dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
 131
 132         /* Last transfer always fails. */
 133         if (i == len || r == 1)
 134                 r = 0;
 135
 136         return r;
 137 }
 138
 139 #define WL1273_FIFO_HAS_DATA(status)    (1 << 5 & status)
 140 #define WL1273_RDS_CORRECTABLE_ERROR    (1 << 3)
 141 #define WL1273_RDS_UNCORRECTABLE_ERROR  (1 << 4)
 142
 143 static int wl1273_fm_rds(struct wl1273_device *radio)
 144 {
 145         struct wl1273_core *core = radio->core;
 146         struct i2c_client *client = core->client;
 147         u16 val;
 148         u8 b0 = WL1273_RDS_DATA_GET, status;
 149         struct v4l2_rds_data rds = { 0, 0, 0 };
 150         struct i2c_msg msg[] = {
 151                 {
 152                         .addr = client->addr,
 153                         .flags = 0,
 154                         .buf = &b0,
 155                         .len = 1,
 156                 },
 157                 {
 158                         .addr = client->addr,
 159                         .flags = I2C_M_RD,
 160                         .buf = (u8 *) &rds,
 161                         .len = sizeof(rds),
 162                 }
 163         };
 164         int r;
 165
 166         if (core->mode != WL1273_MODE_RX)
 167                 return 0;
 168
 169         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
 170         if (r)
 171                 return r;
 172
 173         if ((val & 0x01) == 0) {
 174                 /* RDS decoder not synchronized */
 175                 return -EAGAIN;
 176         }
 177
 178         /* copy all four RDS blocks to internal buffer */
 179         do {
 180                 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
 181                 if (r != ARRAY_SIZE(msg)) {
 182                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
 183                                 ": %s: read_rds error r == %i)\n",
 184                                 __func__, r);
 185                 }
 186
 187                 status = rds.block;
 188
 189                 if (!WL1273_FIFO_HAS_DATA(status))
 190                         break;
 191
 192                 /* copy bits 0-2 (the block ID) to bits 3-5 */
 193                 rds.block = V4L2_RDS_BLOCK_MSK & status;
 194                 rds.block |= rds.block << 3;
 195
 196                 /* copy the error bits to standard positions */
 197                 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
 198                         rds.block |= V4L2_RDS_BLOCK_ERROR;
 199                         rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
 200                 } else if  (WL1273_RDS_CORRECTABLE_ERROR & status) {
 201                         rds.block &= ~V4L2_RDS_BLOCK_ERROR;
 202                         rds.block |= V4L2_RDS_BLOCK_CORRECTED;
 203                 }
 204
 205                 /* copy RDS block to internal buffer */
 206                 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
 207                 radio->wr_index += 3;
 208
 209                 /* wrap write pointer */
 210                 if (radio->wr_index >= radio->buf_size)
 211                         radio->wr_index = 0;
 212
 213                 /* check for overflow & start over */
 214                 if (radio->wr_index == radio->rd_index) {
 215                         dev_dbg(radio->dev, "RDS OVERFLOW");
 216
 217                         radio->rd_index = 0;
 218                         radio->wr_index = 0;
 219                         break;
 220                 }
 221         } while (WL1273_FIFO_HAS_DATA(status));
 222
 223         /* wake up read queue */
 224         if (radio->wr_index != radio->rd_index)
 225                 wake_up_interruptible(&radio->read_queue);
 226
 227         return 0;
 228 }
 229
 230 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
 231 {
 232         struct wl1273_device *radio = dev_id;
 233         struct wl1273_core *core = radio->core;
 234         u16 flags;
 235         int r;
 236
 237         r = core->read(core, WL1273_FLAG_GET, &flags);
 238         if (r)
 239                 goto out;
 240
 241         if (flags & WL1273_BL_EVENT) {
 242                 radio->irq_received = flags;
 243                 dev_dbg(radio->dev, "IRQ: BL\n");
 244         }
 245
 246         if (flags & WL1273_RDS_EVENT) {
 247                 msleep(200);
 248
 249                 wl1273_fm_rds(radio);
 250         }
 251
 252         if (flags & WL1273_BBLK_EVENT)
 253                 dev_dbg(radio->dev, "IRQ: BBLK\n");
 254
 255         if (flags & WL1273_LSYNC_EVENT)
 256                 dev_dbg(radio->dev, "IRQ: LSYNC\n");
 257
 258         if (flags & WL1273_LEV_EVENT) {
 259                 u16 level;
 260
 261                 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
 262                 if (r)
 263                         goto out;
 264
 265                 if (level > 14)
 266                         dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
 267         }
 268
 269         if (flags & WL1273_IFFR_EVENT)
 270                 dev_dbg(radio->dev, "IRQ: IFFR\n");
 271
 272         if (flags & WL1273_PI_EVENT)
 273                 dev_dbg(radio->dev, "IRQ: PI\n");
 274
 275         if (flags & WL1273_PD_EVENT)
 276                 dev_dbg(radio->dev, "IRQ: PD\n");
 277
 278         if (flags & WL1273_STIC_EVENT)
 279                 dev_dbg(radio->dev, "IRQ: STIC\n");
 280
 281         if (flags & WL1273_MAL_EVENT)
 282                 dev_dbg(radio->dev, "IRQ: MAL\n");
 283
 284         if (flags & WL1273_POW_ENB_EVENT) {
 285                 complete(&radio->busy);
 286                 dev_dbg(radio->dev, "NOT BUSY\n");
 287                 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
 288         }
 289
 290         if (flags & WL1273_SCAN_OVER_EVENT)
 291                 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
 292
 293         if (flags & WL1273_ERROR_EVENT)
 294                 dev_dbg(radio->dev, "IRQ: ERROR\n");
 295
 296         if (flags & WL1273_FR_EVENT) {
 297                 u16 freq;
 298
 299                 dev_dbg(radio->dev, "IRQ: FR:\n");
 300
 301                 if (core->mode == WL1273_MODE_RX) {
 302                         r = core->write(core, WL1273_TUNER_MODE_SET,
 303                                         TUNER_MODE_STOP_SEARCH);
 304                         if (r) {
 305                                 dev_err(radio->dev,
 306                                         "%s: TUNER_MODE_SET fails: %d\n",
 307                                         __func__, r);
 308                                 goto out;
 309                         }
 310
 311                         r = core->read(core, WL1273_FREQ_SET, &freq);
 312                         if (r)
 313                                 goto out;
 314
 315                         if (radio->band == WL1273_BAND_JAPAN)
 316                                 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
 317                                         freq * 50;
 318                         else
 319                                 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
 320                                         freq * 50;
 321                         /*
 322                          *  The driver works better with this msleep,
 323                          *  the documentation doesn't mention it.
 324                          */
 325                         usleep_range(10000, 15000);
 326
 327                         dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
 328
 329                 } else {
 330                         r = core->read(core, WL1273_CHANL_SET, &freq);
 331                         if (r)
 332                                 goto out;
 333
 334                         dev_dbg(radio->dev, "%dkHz\n", freq);
 335                 }
 336                 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
 337         }
 338
 339 out:
 340         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 341         complete(&radio->busy);
 342
 343         return IRQ_HANDLED;
 344 }
 345
 346 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 347 {
 348         struct wl1273_core *core = radio->core;
 349         int r = 0;
 350
 351         if (freq < WL1273_BAND_TX_LOW) {
 352                 dev_err(radio->dev,
 353                         "Frequency out of range: %d < %d\n", freq,
 354                         WL1273_BAND_TX_LOW);
 355                 return -ERANGE;
 356         }
 357
 358         if (freq > WL1273_BAND_TX_HIGH) {
 359                 dev_err(radio->dev,
 360                         "Frequency out of range: %d > %d\n", freq,
 361                         WL1273_BAND_TX_HIGH);
 362                 return -ERANGE;
 363         }
 364
 365         /*
 366          *  The driver works better with this sleep,
 367          *  the documentation doesn't mention it.
 368          */
 369         usleep_range(5000, 10000);
 370
 371         dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 372
 373         /* Set the current tx channel */
 374         r = core->write(core, WL1273_CHANL_SET, freq / 10);
 375         if (r)
 376                 return r;
 377
 378         INIT_COMPLETION(radio->busy);
 379
 380         /* wait for the FR IRQ */
 381         r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 382         if (!r)
 383                 return -ETIMEDOUT;
 384
 385         dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r);
 386
 387         /* Enable the output power */
 388         r = core->write(core, WL1273_POWER_ENB_SET, 1);
 389         if (r)
 390                 return r;
 391
 392         INIT_COMPLETION(radio->busy);
 393
 394         /* wait for the POWER_ENB IRQ */
 395         r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 396         if (!r)
 397                 return -ETIMEDOUT;
 398
 399         radio->tx_frequency = freq;
 400         dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r);
 401
 402         return  0;
 403 }
 404
 405 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 406 {
 407         struct wl1273_core *core = radio->core;
 408         int r, f;
 409
 410         if (freq < radio->rangelow) {
 411                 dev_err(radio->dev,
 412                         "Frequency out of range: %d < %d\n", freq,
 413                         radio->rangelow);
 414                 r = -ERANGE;
 415                 goto err;
 416         }
 417
 418         if (freq > radio->rangehigh) {
 419                 dev_err(radio->dev,
 420                         "Frequency out of range: %d > %d\n", freq,
 421                         radio->rangehigh);
 422                 r = -ERANGE;
 423                 goto err;
 424         }
 425
 426         dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 427
 428         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 429
 430         if (radio->band == WL1273_BAND_JAPAN)
 431                 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 432         else
 433                 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 434
 435         r = core->write(core, WL1273_FREQ_SET, f);
 436         if (r) {
 437                 dev_err(radio->dev, "FREQ_SET fails\n");
 438                 goto err;
 439         }
 440
 441         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 442         if (r) {
 443                 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 444                 goto err;
 445         }
 446
 447         INIT_COMPLETION(radio->busy);
 448
 449         r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 450         if (!r) {
 451                 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 452                 return -ETIMEDOUT;
 453         }
 454
 455         radio->rd_index = 0;
 456         radio->wr_index = 0;
 457         radio->rx_frequency = freq;
 458         return 0;
 459 err:
 460         return r;
 461 }
 462
 463 static int wl1273_fm_get_freq(struct wl1273_device *radio)
 464 {
 465         struct wl1273_core *core = radio->core;
 466         unsigned int freq;
 467         u16 f;
 468         int r;
 469
 470         if (core->mode == WL1273_MODE_RX) {
 471                 r = core->read(core, WL1273_FREQ_SET, &f);
 472                 if (r)
 473                         return r;
 474
 475                 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 476                 if (radio->band == WL1273_BAND_JAPAN)
 477                         freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 478                 else
 479                         freq = WL1273_BAND_OTHER_LOW + 50 * f;
 480         } else {
 481                 r = core->read(core, WL1273_CHANL_SET, &f);
 482                 if (r)
 483                         return r;
 484
 485                 freq = f * 10;
 486         }
 487
 488         return freq;
 489 }
 490
 491 /**
 492  * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 493  * @radio:                              A pointer to the device struct.
 494  *
 495  * The firmware file consists of arrays of bytes where the first byte
 496  * gives the array length. The first byte in the file gives the
 497  * number of these arrays.
 498  */
 499 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 500 {
 501         struct wl1273_core *core = radio->core;
 502         unsigned int packet_num;
 503         const struct firmware *fw_p;
 504         const char *fw_name = "radio-wl1273-fw.bin";
 505         struct device *dev = radio->dev;
 506         __u8 *ptr;
 507         int r;
 508
 509         dev_dbg(dev, "%s:\n", __func__);
 510
 511         /*
 512          * Uploading the firmware patch is not always necessary,
 513          * so we only print an info message.
 514          */
 515         if (request_firmware(&fw_p, fw_name, dev)) {
 516                 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 517
 518                 return 0;
 519         }
 520
 521         ptr = (__u8 *) fw_p->data;
 522         packet_num = ptr[0];
 523         dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 524
 525         r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 526         if (r) {
 527                 dev_err(dev, "FW upload error: %d\n", r);
 528                 goto out;
 529         }
 530
 531         /* ignore possible error here */
 532         core->write(core, WL1273_RESET, 0);
 533
 534         dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 535 out:
 536         release_firmware(fw_p);
 537         return r;
 538 }
 539
 540 static int wl1273_fm_stop(struct wl1273_device *radio)
 541 {
 542         struct wl1273_core *core = radio->core;
 543
 544         if (core->mode == WL1273_MODE_RX) {
 545                 int r = core->write(core, WL1273_POWER_SET,
 546                                     WL1273_POWER_SET_OFF);
 547                 if (r)
 548                         dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 549                                 __func__, r);
 550         } else if (core->mode == WL1273_MODE_TX) {
 551                 int r = core->write(core, WL1273_PUPD_SET,
 552                                     WL1273_PUPD_SET_OFF);
 553                 if (r)
 554                         dev_err(radio->dev,
 555                                 "%s: PUPD_SET fails: %d\n", __func__, r);
 556         }
 557
 558         if (core->pdata->disable) {
 559                 core->pdata->disable();
 560                 dev_dbg(radio->dev, "Back to reset\n");
 561         }
 562
 563         return 0;
 564 }
 565
 566 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 567 {
 568         struct wl1273_core *core = radio->core;
 569         struct wl1273_fm_platform_data *pdata = core->pdata;
 570         struct device *dev = radio->dev;
 571         int r = -EINVAL;
 572
 573         if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 574                 dev_dbg(radio->dev, "Out of reset\n");
 575
 576                 pdata->enable();
 577                 msleep(250);
 578         }
 579
 580         if (new_mode == WL1273_MODE_RX) {
 581                 u16 val = WL1273_POWER_SET_FM;
 582
 583                 if (radio->rds_on)
 584                         val |= WL1273_POWER_SET_RDS;
 585
 586                 /* If this fails try again */
 587                 r = core->write(core, WL1273_POWER_SET, val);
 588                 if (r) {
 589                         msleep(100);
 590
 591                         r = core->write(core, WL1273_POWER_SET, val);
 592                         if (r) {
 593                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 594                                 goto fail;
 595                         }
 596                 }
 597
 598                 /* rds buffer configuration */
 599                 radio->wr_index = 0;
 600                 radio->rd_index = 0;
 601
 602         } else if (new_mode == WL1273_MODE_TX) {
 603                 /* If this fails try again once */
 604                 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 605                 if (r) {
 606                         msleep(100);
 607                         r = core->write(core, WL1273_PUPD_SET,
 608                                         WL1273_PUPD_SET_ON);
 609                         if (r) {
 610                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 611                                 goto fail;
 612                         }
 613                 }
 614
 615                 if (radio->rds_on)
 616                         r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 617                 else
 618                         r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 619         } else {
 620                 dev_warn(dev, "%s: Illegal mode.\n", __func__);
 621         }
 622
 623         if (core->mode == WL1273_MODE_OFF) {
 624                 r = wl1273_fm_upload_firmware_patch(radio);
 625                 if (r)
 626                         dev_warn(dev, "Firmware upload failed.\n");
 627
 628                 /*
 629                  * Sometimes the chip is in a wrong power state at this point.
 630                  * So we set the power once again.
 631                  */
 632                 if (new_mode == WL1273_MODE_RX) {
 633                         u16 val = WL1273_POWER_SET_FM;
 634
 635                         if (radio->rds_on)
 636                                 val |= WL1273_POWER_SET_RDS;
 637
 638                         r = core->write(core, WL1273_POWER_SET, val);
 639                         if (r) {
 640                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 641                                 goto fail;
 642                         }
 643                 } else if (new_mode == WL1273_MODE_TX) {
 644                         r = core->write(core, WL1273_PUPD_SET,
 645                                         WL1273_PUPD_SET_ON);
 646                         if (r) {
 647                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 648                                 goto fail;
 649                         }
 650                 }
 651         }
 652
 653         return 0;
 654 fail:
 655         if (pdata->disable)
 656                 pdata->disable();
 657
 658         dev_dbg(dev, "%s: return: %d\n", __func__, r);
 659         return r;
 660 }
 661
 662 static int wl1273_fm_suspend(struct wl1273_device *radio)
 663 {
 664         struct wl1273_core *core = radio->core;
 665         int r = 0;
 666
 667         /* Cannot go from OFF to SUSPENDED */
 668         if (core->mode == WL1273_MODE_RX)
 669                 r = core->write(core, WL1273_POWER_SET,
 670                                 WL1273_POWER_SET_RETENTION);
 671         else if (core->mode == WL1273_MODE_TX)
 672                 r = core->write(core, WL1273_PUPD_SET,
 673                                 WL1273_PUPD_SET_RETENTION);
 674         else
 675                 r = -EINVAL;
 676
 677         if (r) {
 678                 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 679                 goto out;
 680         }
 681
 682 out:
 683         return r;
 684 }
 685
 686 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 687 {
 688         struct wl1273_core *core = radio->core;
 689         struct device *dev = radio->dev;
 690         int old_mode;
 691         int r;
 692
 693         dev_dbg(dev, "%s\n", __func__);
 694         dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 695
 696         old_mode = core->mode;
 697         if (mode & radio->forbidden) {
 698                 r = -EPERM;
 699                 goto out;
 700         }
 701
 702         switch (mode) {
 703         case WL1273_MODE_RX:
 704         case WL1273_MODE_TX:
 705                 r = wl1273_fm_start(radio, mode);
 706                 if (r) {
 707                         dev_err(dev, "%s: Cannot start.\n", __func__);
 708                         wl1273_fm_stop(radio);
 709                         goto out;
 710                 }
 711
 712                 core->mode = mode;
 713                 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 714                 if (r) {
 715                         dev_err(dev, "INT_MASK_SET fails.\n");
 716                         goto out;
 717                 }
 718
 719                 /* remember previous settings */
 720                 if (mode == WL1273_MODE_RX) {
 721                         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 722                         if (r) {
 723                                 dev_err(dev, "set freq fails: %d.\n", r);
 724                                 goto out;
 725                         }
 726
 727                         r = core->set_volume(core, core->volume);
 728                         if (r) {
 729                                 dev_err(dev, "set volume fails: %d.\n", r);
 730                                 goto out;
 731                         }
 732
 733                         dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 734                                 core->volume);
 735                 } else {
 736                         r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 737                         if (r) {
 738                                 dev_err(dev, "set freq fails: %d.\n", r);
 739                                 goto out;
 740                         }
 741                 }
 742
 743                 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 744
 745                 r = core->set_audio(core, core->audio_mode);
 746                 if (r)
 747                         dev_err(dev, "Cannot set audio mode.\n");
 748                 break;
 749
 750         case WL1273_MODE_OFF:
 751                 r = wl1273_fm_stop(radio);
 752                 if (r)
 753                         dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 754                 else
 755                         core->mode = WL1273_MODE_OFF;
 756
 757                 break;
 758
 759         case WL1273_MODE_SUSPENDED:
 760                 r = wl1273_fm_suspend(radio);
 761                 if (r)
 762                         dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 763                 else
 764                         core->mode = WL1273_MODE_SUSPENDED;
 765
 766                 break;
 767
 768         default:
 769                 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 770                 r = -EINVAL;
 771                 break;
 772         }
 773 out:
 774         if (r)
 775                 core->mode = old_mode;
 776
 777         return r;
 778 }
 779
 780 static int wl1273_fm_set_seek(struct wl1273_device *radio,
 781                               unsigned int wrap_around,
 782                               unsigned int seek_upward,
 783                               int level)
 784 {
 785         struct wl1273_core *core = radio->core;
 786         int r = 0;
 787         unsigned int dir = (seek_upward == 0) ? 0 : 1;
 788         unsigned int f;
 789
 790         f = radio->rx_frequency;
 791         dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 792
 793         if (dir && f + radio->spacing <= radio->rangehigh)
 794                 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 795         else if (dir && wrap_around)
 796                 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 797         else if (f - radio->spacing >= radio->rangelow)
 798                 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 799         else if (wrap_around)
 800                 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 801
 802         if (r)
 803                 goto out;
 804
 805         if (level < SCHAR_MIN || level > SCHAR_MAX)
 806                 return -EINVAL;
 807
 808         INIT_COMPLETION(radio->busy);
 809         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 810
 811         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 812         if (r)
 813                 goto out;
 814
 815         dev_dbg(radio->dev, "%s\n", __func__);
 816
 817         r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 818         if (r)
 819                 goto out;
 820
 821         r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 822         if (r)
 823                 goto out;
 824
 825         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 826         if (r)
 827                 goto out;
 828
 829         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 830         if (!(radio->irq_received & WL1273_BL_EVENT))
 831                 goto out;
 832
 833         radio->irq_received &= ~WL1273_BL_EVENT;
 834
 835         if (!wrap_around)
 836                 goto out;
 837
 838         /* Wrap around */
 839         dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 840
 841         if (seek_upward)
 842                 f = radio->rangelow;
 843         else
 844                 f = radio->rangehigh;
 845
 846         r = wl1273_fm_set_rx_freq(radio, f);
 847         if (r)
 848                 goto out;
 849
 850         INIT_COMPLETION(radio->busy);
 851         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 852
 853         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 854         if (r)
 855                 goto out;
 856
 857         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 858 out:
 859         dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 860         return r;
 861 }
 862
 863 /**
 864  * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 865  * @radio:                      A pointer to the device struct.
 866  */
 867 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 868 {
 869         struct wl1273_core *core = radio->core;
 870         struct device *dev = radio->dev;
 871         u16 val;
 872         int r;
 873
 874         if (core->mode == WL1273_MODE_OFF ||
 875             core->mode == WL1273_MODE_SUSPENDED)
 876                 return -EPERM;
 877
 878         r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 879         if (r) {
 880                 dev_err(dev, "%s: read error: %d\n", __func__, r);
 881                 goto out;
 882         }
 883
 884 out:
 885         return val;
 886 }
 887
 888 /**
 889  * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 890  * @radio:                       A pointer to the device struct.
 891  * @preemphasis:                 The new pre-amphasis value.
 892  *
 893  * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 894  * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 895  */
 896 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 897                                      unsigned int preemphasis)
 898 {
 899         struct wl1273_core *core = radio->core;
 900         int r;
 901         u16 em;
 902
 903         if (core->mode == WL1273_MODE_OFF ||
 904             core->mode == WL1273_MODE_SUSPENDED)
 905                 return -EPERM;
 906
 907         mutex_lock(&core->lock);
 908
 909         switch (preemphasis) {
 910         case V4L2_PREEMPHASIS_DISABLED:
 911                 em = 1;
 912                 break;
 913         case V4L2_PREEMPHASIS_50_uS:
 914                 em = 0;
 915                 break;
 916         case V4L2_PREEMPHASIS_75_uS:
 917                 em = 2;
 918                 break;
 919         default:
 920                 r = -EINVAL;
 921                 goto out;
 922         }
 923
 924         r = core->write(core, WL1273_PREMPH_SET, em);
 925         if (r)
 926                 goto out;
 927
 928         radio->preemphasis = preemphasis;
 929
 930 out:
 931         mutex_unlock(&core->lock);
 932         return r;
 933 }
 934
 935 static int wl1273_fm_rds_on(struct wl1273_device *radio)
 936 {
 937         struct wl1273_core *core = radio->core;
 938         int r;
 939
 940         dev_dbg(radio->dev, "%s\n", __func__);
 941         if (radio->rds_on)
 942                 return 0;
 943
 944         r = core->write(core, WL1273_POWER_SET,
 945                         WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 946         if (r)
 947                 goto out;
 948
 949         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 950         if (r)
 951                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 952 out:
 953         return r;
 954 }
 955
 956 static int wl1273_fm_rds_off(struct wl1273_device *radio)
 957 {
 958         struct wl1273_core *core = radio->core;
 959         int r;
 960
 961         if (!radio->rds_on)
 962                 return 0;
 963
 964         radio->irq_flags &= ~WL1273_RDS_EVENT;
 965
 966         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 967         if (r)
 968                 goto out;
 969
 970         /* stop rds reception */
 971         cancel_delayed_work(&radio->work);
 972
 973         /* Service pending read */
 974         wake_up_interruptible(&radio->read_queue);
 975
 976         dev_dbg(radio->dev, "%s\n", __func__);
 977
 978         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 979         if (r)
 980                 goto out;
 981
 982         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 983         if (r)
 984                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 985 out:
 986         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 987
 988         return r;
 989 }
 990
 991 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
 992 {
 993         int r = 0;
 994         struct wl1273_core *core = radio->core;
 995
 996         if (core->mode == WL1273_MODE_OFF ||
 997             core->mode == WL1273_MODE_SUSPENDED)
 998                 return -EPERM;
 999
1000         if (new_mode == WL1273_RDS_RESET) {
1001                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1002                 return r;
1003         }
1004
1005         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1006                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1007         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1008                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1009         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1010                 r = wl1273_fm_rds_off(radio);
1011         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1012                 r = wl1273_fm_rds_on(radio);
1013         } else {
1014                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1015                         __func__, new_mode);
1016                 r = -EINVAL;
1017         }
1018
1019         if (!r)
1020                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1021
1022         return r;
1023 }
1024
1025 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1026                                     size_t count, loff_t *ppos)
1027 {
1028         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1029         struct wl1273_core *core = radio->core;
1030         u16 val;
1031         int r;
1032
1033         dev_dbg(radio->dev, "%s\n", __func__);
1034
1035         if (core->mode != WL1273_MODE_TX)
1036                 return count;
1037
1038         if (radio->rds_users == 0) {
1039                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1040                 return 0;
1041         }
1042
1043         if (mutex_lock_interruptible(&core->lock))
1044                 return -EINTR;
1045         /*
1046          * Multiple processes can open the device, but only
1047          * one gets to write to it.
1048          */
1049         if (radio->owner && radio->owner != file) {
1050                 r = -EBUSY;
1051                 goto out;
1052         }
1053         radio->owner = file;
1054
1055         /* Manual Mode */
1056         if (count > 255)
1057                 val = 255;
1058         else
1059                 val = count;
1060
1061         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1062
1063         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1064                 r = -EFAULT;
1065                 goto out;
1066         }
1067
1068         dev_dbg(radio->dev, "Count: %d\n", val);
1069         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1070
1071         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1072         core->write_data(core, radio->write_buf, val + 1);
1073
1074         r = val;
1075 out:
1076         mutex_unlock(&core->lock);
1077
1078         return r;
1079 }
1080
1081 static unsigned int wl1273_fm_fops_poll(struct file *file,
1082                                         struct poll_table_struct *pts)
1083 {
1084         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1085         struct wl1273_core *core = radio->core;
1086
1087         if (radio->owner && radio->owner != file)
1088                 return -EBUSY;
1089
1090         radio->owner = file;
1091
1092         if (core->mode == WL1273_MODE_RX) {
1093                 poll_wait(file, &radio->read_queue, pts);
1094
1095                 if (radio->rd_index != radio->wr_index)
1096                         return POLLIN | POLLRDNORM;
1097
1098         } else if (core->mode == WL1273_MODE_TX) {
1099                 return POLLOUT | POLLWRNORM;
1100         }
1101
1102         return 0;
1103 }
1104
1105 static int wl1273_fm_fops_open(struct file *file)
1106 {
1107         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1108         struct wl1273_core *core = radio->core;
1109         int r = 0;
1110
1111         dev_dbg(radio->dev, "%s\n", __func__);
1112
1113         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1114             !radio->rds_users) {
1115                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1116
1117                 if (mutex_lock_interruptible(&core->lock))
1118                         return -EINTR;
1119
1120                 radio->irq_flags |= WL1273_RDS_EVENT;
1121
1122                 r = core->write(core, WL1273_INT_MASK_SET,
1123                                 radio->irq_flags);
1124                 if (r) {
1125                         mutex_unlock(&core->lock);
1126                         goto out;
1127                 }
1128
1129                 radio->rds_users++;
1130
1131                 mutex_unlock(&core->lock);
1132         }
1133 out:
1134         return r;
1135 }
1136
1137 static int wl1273_fm_fops_release(struct file *file)
1138 {
1139         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1140         struct wl1273_core *core = radio->core;
1141         int r = 0;
1142
1143         dev_dbg(radio->dev, "%s\n", __func__);
1144
1145         if (radio->rds_users > 0) {
1146                 radio->rds_users--;
1147                 if (radio->rds_users == 0) {
1148                         if (mutex_lock_interruptible(&core->lock))
1149                                 return -EINTR;
1150
1151                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1152
1153                         if (core->mode == WL1273_MODE_RX) {
1154                                 r = core->write(core,
1155                                                 WL1273_INT_MASK_SET,
1156                                                 radio->irq_flags);
1157                                 if (r) {
1158                                         mutex_unlock(&core->lock);
1159                                         goto out;
1160                                 }
1161                         }
1162                         mutex_unlock(&core->lock);
1163                 }
1164         }
1165
1166         if (file == radio->owner)
1167                 radio->owner = NULL;
1168 out:
1169         return r;
1170 }
1171
1172 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1173                                    size_t count, loff_t *ppos)
1174 {
1175         int r = 0;
1176         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1177         struct wl1273_core *core = radio->core;
1178         unsigned int block_count = 0;
1179         u16 val;
1180
1181         dev_dbg(radio->dev, "%s\n", __func__);
1182
1183         if (core->mode != WL1273_MODE_RX)
1184                 return 0;
1185
1186         if (radio->rds_users == 0) {
1187                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1188                 return 0;
1189         }
1190
1191         if (mutex_lock_interruptible(&core->lock))
1192                 return -EINTR;
1193
1194         /*
1195          * Multiple processes can open the device, but only
1196          * one at a time gets read access.
1197          */
1198         if (radio->owner && radio->owner != file) {
1199                 r = -EBUSY;
1200                 goto out;
1201         }
1202         radio->owner = file;
1203
1204         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1205         if (r) {
1206                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1207                 goto out;
1208         } else if (val == 0) {
1209                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1210                 r = -ENODATA;
1211                 goto out;
1212         }
1213
1214         /* block if no new data available */
1215         while (radio->wr_index == radio->rd_index) {
1216                 if (file->f_flags & O_NONBLOCK) {
1217                         r = -EWOULDBLOCK;
1218                         goto out;
1219                 }
1220
1221                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1222                 if (wait_event_interruptible(radio->read_queue,
1223                                              radio->wr_index !=
1224                                              radio->rd_index) < 0) {
1225                         r = -EINTR;
1226                         goto out;
1227                 }
1228         }
1229
1230         /* calculate block count from byte count */
1231         count /= RDS_BLOCK_SIZE;
1232
1233         /* copy RDS blocks from the internal buffer and to user buffer */
1234         while (block_count < count) {
1235                 if (radio->rd_index == radio->wr_index)
1236                         break;
1237
1238                 /* always transfer complete RDS blocks */
1239                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1240                                  RDS_BLOCK_SIZE))
1241                         break;
1242
1243                 /* increment and wrap the read pointer */
1244                 radio->rd_index += RDS_BLOCK_SIZE;
1245                 if (radio->rd_index >= radio->buf_size)
1246                         radio->rd_index = 0;
1247
1248                 /* increment counters */
1249                 block_count++;
1250                 buf += RDS_BLOCK_SIZE;
1251                 r += RDS_BLOCK_SIZE;
1252         }
1253
1254 out:
1255         dev_dbg(radio->dev, "%s: exit\n", __func__);
1256         mutex_unlock(&core->lock);
1257
1258         return r;
1259 }
1260
1261 static const struct v4l2_file_operations wl1273_fops = {
1262         .owner          = THIS_MODULE,
1263         .read           = wl1273_fm_fops_read,
1264         .write          = wl1273_fm_fops_write,
1265         .poll           = wl1273_fm_fops_poll,
1266         .unlocked_ioctl = video_ioctl2,
1267         .open           = wl1273_fm_fops_open,
1268         .release        = wl1273_fm_fops_release,
1269 };
1270
1271 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1272                                      struct v4l2_capability *capability)
1273 {
1274         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1275
1276         dev_dbg(radio->dev, "%s\n", __func__);
1277
1278         strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1279                 sizeof(capability->driver));
1280         strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1281                 sizeof(capability->card));
1282         strlcpy(capability->bus_info, radio->bus_type,
1283                 sizeof(capability->bus_info));
1284
1285         capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
1286                 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1287                 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1288                 V4L2_CAP_RDS_OUTPUT;
1289
1290         return 0;
1291 }
1292
1293 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1294                                     unsigned int *i)
1295 {
1296         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1297
1298         dev_dbg(radio->dev, "%s\n", __func__);
1299
1300         *i = 0;
1301
1302         return 0;
1303 }
1304
1305 static int wl1273_fm_vidioc_s_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         if (i != 0)
1313                 return -EINVAL;
1314
1315         return 0;
1316 }
1317
1318 /**
1319  * wl1273_fm_set_tx_power() -   Set the transmission power value.
1320  * @core:                       A pointer to the device struct.
1321  * @power:                      The new power value.
1322  */
1323 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1324 {
1325         struct wl1273_core *core = radio->core;
1326         int r;
1327
1328         if (core->mode == WL1273_MODE_OFF ||
1329             core->mode == WL1273_MODE_SUSPENDED)
1330                 return -EPERM;
1331
1332         mutex_lock(&core->lock);
1333
1334         /* Convert the dBuV value to chip presentation */
1335         r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1336         if (r)
1337                 goto out;
1338
1339         radio->tx_power = power;
1340
1341 out:
1342         mutex_unlock(&core->lock);
1343         return r;
1344 }
1345
1346 #define WL1273_SPACING_50kHz    1
1347 #define WL1273_SPACING_100kHz   2
1348 #define WL1273_SPACING_200kHz   4
1349
1350 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1351                                     unsigned int spacing)
1352 {
1353         struct wl1273_core *core = radio->core;
1354         int r;
1355
1356         if (spacing == 0) {
1357                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1358                                 WL1273_SPACING_100kHz);
1359                 radio->spacing = 100;
1360         } else if (spacing - 50000 < 25000) {
1361                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1362                                 WL1273_SPACING_50kHz);
1363                 radio->spacing = 50;
1364         } else if (spacing - 100000 < 50000) {
1365                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1366                                 WL1273_SPACING_100kHz);
1367                 radio->spacing = 100;
1368         } else {
1369                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1370                                 WL1273_SPACING_200kHz);
1371                 radio->spacing = 200;
1372         }
1373
1374         return r;
1375 }
1376
1377 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1378 {
1379         struct wl1273_device *radio = ctrl->priv;
1380         struct wl1273_core *core = radio->core;
1381
1382         dev_dbg(radio->dev, "%s\n", __func__);
1383
1384         if (mutex_lock_interruptible(&core->lock))
1385                 return -EINTR;
1386
1387         switch (ctrl->id) {
1388         case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1389                 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1390                 break;
1391
1392         default:
1393                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1394                          __func__, ctrl->id);
1395                 break;
1396         }
1397
1398         mutex_unlock(&core->lock);
1399
1400         return 0;
1401 }
1402
1403 #define WL1273_MUTE_SOFT_ENABLE    (1 << 0)
1404 #define WL1273_MUTE_AC             (1 << 1)
1405 #define WL1273_MUTE_HARD_LEFT      (1 << 2)
1406 #define WL1273_MUTE_HARD_RIGHT     (1 << 3)
1407 #define WL1273_MUTE_SOFT_FORCE     (1 << 4)
1408
1409 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1410 {
1411         return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1412 }
1413
1414 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1415 {
1416         struct wl1273_device *radio = to_radio(ctrl);
1417         struct wl1273_core *core = radio->core;
1418         int r = 0;
1419
1420         dev_dbg(radio->dev, "%s\n", __func__);
1421
1422         switch (ctrl->id) {
1423         case V4L2_CID_AUDIO_MUTE:
1424                 if (mutex_lock_interruptible(&core->lock))
1425                         return -EINTR;
1426
1427                 if (core->mode == WL1273_MODE_RX && ctrl->val)
1428                         r = core->write(core,
1429                                         WL1273_MUTE_STATUS_SET,
1430                                         WL1273_MUTE_HARD_LEFT |
1431                                         WL1273_MUTE_HARD_RIGHT);
1432                 else if (core->mode == WL1273_MODE_RX)
1433                         r = core->write(core,
1434                                         WL1273_MUTE_STATUS_SET, 0x0);
1435                 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1436                         r = core->write(core, WL1273_MUTE, 1);
1437                 else if (core->mode == WL1273_MODE_TX)
1438                         r = core->write(core, WL1273_MUTE, 0);
1439
1440                 mutex_unlock(&core->lock);
1441                 break;
1442
1443         case V4L2_CID_AUDIO_VOLUME:
1444                 if (ctrl->val == 0)
1445                         r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1446                 else
1447                         r =  core->set_volume(core, core->volume);
1448                 break;
1449
1450         case V4L2_CID_TUNE_PREEMPHASIS:
1451                 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1452                 break;
1453
1454         case V4L2_CID_TUNE_POWER_LEVEL:
1455                 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1456                 break;
1457
1458         default:
1459                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1460                          __func__, ctrl->id);
1461                 break;
1462         }
1463
1464         dev_dbg(radio->dev, "%s\n", __func__);
1465         return r;
1466 }
1467
1468 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1469                                     struct v4l2_audio *audio)
1470 {
1471         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1472
1473         dev_dbg(radio->dev, "%s\n", __func__);
1474
1475         if (audio->index > 1)
1476                 return -EINVAL;
1477
1478         strlcpy(audio->name, "Radio", sizeof(audio->name));
1479         audio->capability = V4L2_AUDCAP_STEREO;
1480
1481         return 0;
1482 }
1483
1484 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1485                                     struct v4l2_audio *audio)
1486 {
1487         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1488
1489         dev_dbg(radio->dev, "%s\n", __func__);
1490
1491         if (audio->index != 0)
1492                 return -EINVAL;
1493
1494         return 0;
1495 }
1496
1497 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1498 #define WL1273_RDS_SYNCHRONIZED 1
1499
1500 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1501                                     struct v4l2_tuner *tuner)
1502 {
1503         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1504         struct wl1273_core *core = radio->core;
1505         u16 val;
1506         int r;
1507
1508         dev_dbg(radio->dev, "%s\n", __func__);
1509
1510         if (tuner->index > 0)
1511                 return -EINVAL;
1512
1513         strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1514         tuner->type = V4L2_TUNER_RADIO;
1515
1516         tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1517         tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1518
1519         tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1520                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1521
1522         if (radio->stereo)
1523                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1524         else
1525                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1526
1527         if (core->mode != WL1273_MODE_RX)
1528                 return 0;
1529
1530         if (mutex_lock_interruptible(&core->lock))
1531                 return -EINTR;
1532
1533         r = core->read(core, WL1273_STEREO_GET, &val);
1534         if (r)
1535                 goto out;
1536
1537         if (val == 1)
1538                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1539         else
1540                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1541
1542         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1543         if (r)
1544                 goto out;
1545
1546         tuner->signal = (s16) val;
1547         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1548
1549         tuner->afc = 0;
1550
1551         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1552         if (r)
1553                 goto out;
1554
1555         if (val == WL1273_RDS_SYNCHRONIZED)
1556                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1557 out:
1558         mutex_unlock(&core->lock);
1559
1560         return r;
1561 }
1562
1563 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1564                                     struct v4l2_tuner *tuner)
1565 {
1566         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1567         struct wl1273_core *core = radio->core;
1568         int r = 0;
1569
1570         dev_dbg(radio->dev, "%s\n", __func__);
1571         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1572         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1573         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1574         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1575         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1576         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1577
1578         if (tuner->index > 0)
1579                 return -EINVAL;
1580
1581         if (mutex_lock_interruptible(&core->lock))
1582                 return -EINTR;
1583
1584         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1585         if (r)
1586                 goto out;
1587
1588         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1589                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1590         else
1591                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1592
1593         if (r)
1594                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1595
1596         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1597                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1598                 if (r < 0) {
1599                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1600                                  __func__, r);
1601                         goto out;
1602                 }
1603                 radio->stereo = false;
1604         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1605                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1606                 if (r < 0) {
1607                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1608                                  __func__, r);
1609                         goto out;
1610                 }
1611                 radio->stereo = true;
1612         } else {
1613                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1614                          __func__, tuner->audmode);
1615                 r = -EINVAL;
1616                 goto out;
1617         }
1618
1619 out:
1620         mutex_unlock(&core->lock);
1621
1622         return r;
1623 }
1624
1625 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1626                                         struct v4l2_frequency *freq)
1627 {
1628         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1629         struct wl1273_core *core = radio->core;
1630
1631         dev_dbg(radio->dev, "%s\n", __func__);
1632
1633         if (mutex_lock_interruptible(&core->lock))
1634                 return -EINTR;
1635
1636         freq->type = V4L2_TUNER_RADIO;
1637         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1638
1639         mutex_unlock(&core->lock);
1640
1641         return 0;
1642 }
1643
1644 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1645                                         struct v4l2_frequency *freq)
1646 {
1647         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1648         struct wl1273_core *core = radio->core;
1649         int r;
1650
1651         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1652
1653         if (freq->type != V4L2_TUNER_RADIO) {
1654                 dev_dbg(radio->dev,
1655                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1656                 return -EINVAL;
1657         }
1658
1659         if (mutex_lock_interruptible(&core->lock))
1660                 return -EINTR;
1661
1662         if (core->mode == WL1273_MODE_RX) {
1663                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1664
1665                 r = wl1273_fm_set_rx_freq(radio,
1666                                           WL1273_INV_FREQ(freq->frequency));
1667                 if (r)
1668                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1669                                  ": set frequency failed with %d\n", r);
1670         } else {
1671                 r = wl1273_fm_set_tx_freq(radio,
1672                                           WL1273_INV_FREQ(freq->frequency));
1673                 if (r)
1674                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1675                                  ": set frequency failed with %d\n", r);
1676         }
1677
1678         mutex_unlock(&core->lock);
1679
1680         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1681         return r;
1682 }
1683
1684 #define WL1273_DEFAULT_SEEK_LEVEL       7
1685
1686 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1687                                            struct v4l2_hw_freq_seek *seek)
1688 {
1689         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1690         struct wl1273_core *core = radio->core;
1691         int r;
1692
1693         dev_dbg(radio->dev, "%s\n", __func__);
1694
1695         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1696                 return -EINVAL;
1697
1698         if (mutex_lock_interruptible(&core->lock))
1699                 return -EINTR;
1700
1701         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1702         if (r)
1703                 goto out;
1704
1705         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1706         if (r)
1707                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1708
1709         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1710                                WL1273_DEFAULT_SEEK_LEVEL);
1711         if (r)
1712                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1713
1714 out:
1715         mutex_unlock(&core->lock);
1716         return r;
1717 }
1718
1719 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1720                                         struct v4l2_modulator *modulator)
1721 {
1722         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1723         struct wl1273_core *core = radio->core;
1724         int r = 0;
1725
1726         dev_dbg(radio->dev, "%s\n", __func__);
1727
1728         if (modulator->index > 0)
1729                 return -EINVAL;
1730
1731         if (mutex_lock_interruptible(&core->lock))
1732                 return -EINTR;
1733
1734         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1735         if (r)
1736                 goto out;
1737
1738         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1739                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1740         else
1741                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1742
1743         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1744                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1745         else
1746                 r = core->write(core, WL1273_MONO_SET,
1747                                 WL1273_RX_STEREO);
1748         if (r < 0)
1749                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1750                          "MONO_SET fails: %d\n", r);
1751 out:
1752         mutex_unlock(&core->lock);
1753
1754         return r;
1755 }
1756
1757 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1758                                         struct v4l2_modulator *modulator)
1759 {
1760         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1761         struct wl1273_core *core = radio->core;
1762         u16 val;
1763         int r;
1764
1765         dev_dbg(radio->dev, "%s\n", __func__);
1766
1767         strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1768                 sizeof(modulator->name));
1769
1770         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1771         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1772
1773         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1774                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1775
1776         if (core->mode != WL1273_MODE_TX)
1777                 return 0;
1778
1779         if (mutex_lock_interruptible(&core->lock))
1780                 return -EINTR;
1781
1782         r = core->read(core, WL1273_MONO_SET, &val);
1783         if (r)
1784                 goto out;
1785
1786         if (val == WL1273_TX_STEREO)
1787                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1788         else
1789                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1790
1791         if (radio->rds_on)
1792                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1793 out:
1794         mutex_unlock(&core->lock);
1795
1796         return 0;
1797 }
1798
1799 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1800 {
1801         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1802         struct wl1273_core *core = radio->core;
1803         struct device *dev = radio->dev;
1804         u16 val;
1805         int r;
1806
1807         dev_info(dev, DRIVER_DESC);
1808
1809         if (core->mode == WL1273_MODE_OFF) {
1810                 dev_info(dev, "Mode: Off\n");
1811                 return 0;
1812         }
1813
1814         if (core->mode == WL1273_MODE_SUSPENDED) {
1815                 dev_info(dev, "Mode: Suspended\n");
1816                 return 0;
1817         }
1818
1819         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1820         if (r)
1821                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1822         else
1823                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1824
1825         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1826         if (r)
1827                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1828         else
1829                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1830
1831         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1832         if (r)
1833                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1834         else
1835                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1836
1837         r = core->read(core, WL1273_BAND_SET, &val);
1838         if (r)
1839                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1840         else
1841                 dev_info(dev, "BAND: %d\n", val);
1842
1843         if (core->mode == WL1273_MODE_TX) {
1844                 r = core->read(core, WL1273_PUPD_SET, &val);
1845                 if (r)
1846                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1847                 else
1848                         dev_info(dev, "PUPD: 0x%04x\n", val);
1849
1850                 r = core->read(core, WL1273_CHANL_SET, &val);
1851                 if (r)
1852                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1853                 else
1854                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1855         } else if (core->mode == WL1273_MODE_RX) {
1856                 int bf = radio->rangelow;
1857
1858                 r = core->read(core, WL1273_FREQ_SET, &val);
1859                 if (r)
1860                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1861                 else
1862                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1863
1864                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1865                 if (r)
1866                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1867                                 __func__);
1868                 else if (val == 0)
1869                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1870                 else if (val == 1)
1871                         dev_info(dev, "MOST_MODE: Force mono output\n");
1872                 else
1873                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1874
1875                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1876                 if (r)
1877                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1878                 else if (val == 0)
1879                         dev_info(dev,
1880                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1881                 else if (val == 1)
1882                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1883                 else
1884                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1885
1886                 r = core->read(core, WL1273_STEREO_GET, &val);
1887                 if (r)
1888                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1889                 else if (val == 0)
1890                         dev_info(dev, "STEREO: Not detected\n");
1891                 else if (val == 1)
1892                         dev_info(dev, "STEREO: Detected\n");
1893                 else
1894                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1895
1896                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1897                 if (r)
1898                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1899                 else
1900                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1901
1902                 r = core->read(core, WL1273_POWER_SET, &val);
1903                 if (r)
1904                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1905                 else
1906                         dev_info(dev, "POWER: 0x%04x\n", val);
1907
1908                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1909                 if (r)
1910                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1911                 else
1912                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1913
1914                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1915                 if (r)
1916                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1917                                 __func__);
1918                 else if (val == 0)
1919                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1920
1921                 else if (val == 1)
1922                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1923                 else
1924                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1925
1926                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1927                 if (r)
1928                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1929                                 __func__);
1930                 else
1931                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1932
1933                 r = core->read(core, WL1273_VOLUME_SET, &val);
1934                 if (r)
1935                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1936                 else
1937                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1938         }
1939
1940         return 0;
1941 }
1942
1943 static void wl1273_vdev_release(struct video_device *dev)
1944 {
1945 }
1946
1947 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1948         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1949         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1950 };
1951
1952 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1953         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1954         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1955         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1956         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1957         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1958         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1959         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1960         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1961         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1962         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1963         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1964         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1965         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1966 };
1967
1968 static struct video_device wl1273_viddev_template = {
1969         .fops                   = &wl1273_fops,
1970         .ioctl_ops              = &wl1273_ioctl_ops,
1971         .name                   = WL1273_FM_DRIVER_NAME,
1972         .release                = wl1273_vdev_release,
1973 };
1974
1975 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1976 {
1977         struct wl1273_device *radio = platform_get_drvdata(pdev);
1978         struct wl1273_core *core = radio->core;
1979
1980         dev_info(&pdev->dev, "%s.\n", __func__);
1981
1982         free_irq(core->client->irq, radio);
1983         core->pdata->free_resources();
1984
1985         v4l2_ctrl_handler_free(&radio->ctrl_handler);
1986         video_unregister_device(&radio->videodev);
1987         v4l2_device_unregister(&radio->v4l2dev);
1988         kfree(radio->buffer);
1989         kfree(radio->write_buf);
1990         kfree(radio);
1991
1992         return 0;
1993 }
1994
1995 static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev)
1996 {
1997         struct wl1273_core **core = pdev->dev.platform_data;
1998         struct wl1273_device *radio;
1999         struct v4l2_ctrl *ctrl;
2000         int r = 0;
2001
2002         pr_debug("%s\n", __func__);
2003
2004         if (!core) {
2005                 dev_err(&pdev->dev, "No platform data.\n");
2006                 r = -EINVAL;
2007                 goto pdata_err;
2008         }
2009
2010         radio = kzalloc(sizeof(*radio), GFP_KERNEL);
2011         if (!radio) {
2012                 r = -ENOMEM;
2013                 goto pdata_err;
2014         }
2015
2016         /* RDS buffer allocation */
2017         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2018         radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
2019         if (!radio->buffer) {
2020                 pr_err("Cannot allocate memory for RDS buffer.\n");
2021                 r = -ENOMEM;
2022                 goto err_kmalloc;
2023         }
2024
2025         radio->core = *core;
2026         radio->irq_flags = WL1273_IRQ_MASK;
2027         radio->dev = &radio->core->client->dev;
2028         radio->rds_on = false;
2029         radio->core->mode = WL1273_MODE_OFF;
2030         radio->tx_power = 118;
2031         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2032         radio->band = WL1273_BAND_OTHER;
2033         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2034         radio->core->channel_number = 2;
2035         radio->core->volume = WL1273_DEFAULT_VOLUME;
2036         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2037         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2038         radio->rangelow = WL1273_BAND_OTHER_LOW;
2039         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2040         radio->stereo = true;
2041         radio->bus_type = "I2C";
2042
2043         if (radio->core->pdata->request_resources) {
2044                 r = radio->core->pdata->request_resources(radio->core->client);
2045                 if (r) {
2046                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2047                                 ": Cannot get platform data\n");
2048                         goto err_resources;
2049                 }
2050
2051                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2052
2053                 r = request_threaded_irq(radio->core->client->irq, NULL,
2054                                          wl1273_fm_irq_thread_handler,
2055                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2056                                          "wl1273-fm", radio);
2057                 if (r < 0) {
2058                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2059                                 ": Unable to register IRQ handler: %d\n", r);
2060                         goto err_request_irq;
2061                 }
2062         } else {
2063                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2064                         " not configured");
2065                 r = -EINVAL;
2066                 goto err_resources;
2067         }
2068
2069         init_completion(&radio->busy);
2070         init_waitqueue_head(&radio->read_queue);
2071
2072         radio->write_buf = kmalloc(256, GFP_KERNEL);
2073         if (!radio->write_buf) {
2074                 r = -ENOMEM;
2075                 goto write_buf_err;
2076         }
2077
2078         radio->dev = &pdev->dev;
2079         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2080         radio->rds_users = 0;
2081
2082         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2083         if (r) {
2084                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2085                 goto device_register_err;
2086         }
2087
2088         /* V4L2 configuration */
2089         memcpy(&radio->videodev, &wl1273_viddev_template,
2090                sizeof(wl1273_viddev_template));
2091
2092         radio->videodev.v4l2_dev = &radio->v4l2dev;
2093
2094         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2095
2096         /* add in ascending ID order */
2097         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2098                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2099                           WL1273_DEFAULT_VOLUME);
2100
2101         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2102                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2103
2104         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2105                                V4L2_CID_TUNE_PREEMPHASIS,
2106                                V4L2_PREEMPHASIS_75_uS, 0x03,
2107                                V4L2_PREEMPHASIS_50_uS);
2108
2109         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2110                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2111
2112         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2113                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2114                                  0, 255, 1, 255);
2115         if (ctrl)
2116                 ctrl->is_volatile = 1;
2117
2118         if (radio->ctrl_handler.error) {
2119                 r = radio->ctrl_handler.error;
2120                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2121                 goto handler_init_err;
2122         }
2123
2124         video_set_drvdata(&radio->videodev, radio);
2125         platform_set_drvdata(pdev, radio);
2126
2127         /* register video device */
2128         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2129         if (r) {
2130                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2131                         ": Could not register video device\n");
2132                 goto handler_init_err;
2133         }
2134
2135         return 0;
2136
2137 handler_init_err:
2138         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2139         v4l2_device_unregister(&radio->v4l2dev);
2140 device_register_err:
2141         kfree(radio->write_buf);
2142 write_buf_err:
2143         free_irq(radio->core->client->irq, radio);
2144 err_request_irq:
2145         radio->core->pdata->free_resources();
2146 err_resources:
2147         kfree(radio->buffer);
2148 err_kmalloc:
2149         kfree(radio);
2150 pdata_err:
2151         return r;
2152 }
2153
2154 MODULE_ALIAS("platform:wl1273_fm_radio");
2155
2156 static struct platform_driver wl1273_fm_radio_driver = {
2157         .probe          = wl1273_fm_radio_probe,
2158         .remove         = __devexit_p(wl1273_fm_radio_remove),
2159         .driver         = {
2160                 .name   = "wl1273_fm_radio",
2161                 .owner  = THIS_MODULE,
2162         },
2163 };
2164
2165 static int __init wl1273_fm_module_init(void)
2166 {
2167         pr_info("%s\n", __func__);
2168         return platform_driver_register(&wl1273_fm_radio_driver);
2169 }
2170 module_init(wl1273_fm_module_init);
2171
2172 static void __exit wl1273_fm_module_exit(void)
2173 {
2174         flush_scheduled_work();
2175         platform_driver_unregister(&wl1273_fm_radio_driver);
2176         pr_info(DRIVER_DESC ", Exiting.\n");
2177 }
2178 module_exit(wl1273_fm_module_exit);
2179
2180 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2181 MODULE_DESCRIPTION(DRIVER_DESC);
2182 MODULE_LICENSE("GPL");