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 <linux/module.h>
  27 #include <media/v4l2-common.h>
  28 #include <media/v4l2-ctrls.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/v4l2-ioctl.h>
  31
  32 #define DRIVER_DESC "Wl1273 FM Radio"
  33
  34 #define WL1273_POWER_SET_OFF            0
  35 #define WL1273_POWER_SET_FM             BIT(0)
  36 #define WL1273_POWER_SET_RDS            BIT(1)
  37 #define WL1273_POWER_SET_RETENTION      BIT(4)
  38
  39 #define WL1273_PUPD_SET_OFF             0x00
  40 #define WL1273_PUPD_SET_ON              0x01
  41 #define WL1273_PUPD_SET_RETENTION       0x10
  42
  43 #define WL1273_FREQ(x)          (x * 10000 / 625)
  44 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  45
  46 /*
  47  * static int radio_nr - The number of the radio device
  48  *
  49  * The default is 0.
  50  */
  51 static int radio_nr;
  52 module_param(radio_nr, int, 0);
  53 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  54
  55 struct wl1273_device {
  56         char *bus_type;
  57
  58         u8 forbidden;
  59         unsigned int preemphasis;
  60         unsigned int spacing;
  61         unsigned int tx_power;
  62         unsigned int rx_frequency;
  63         unsigned int tx_frequency;
  64         unsigned int rangelow;
  65         unsigned int rangehigh;
  66         unsigned int band;
  67         bool stereo;
  68
  69         /* RDS */
  70         unsigned int rds_on;
  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         /* Service pending read */
 971         wake_up_interruptible(&radio->read_queue);
 972
 973         dev_dbg(radio->dev, "%s\n", __func__);
 974
 975         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 976         if (r)
 977                 goto out;
 978
 979         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 980         if (r)
 981                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 982 out:
 983         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 984
 985         return r;
 986 }
 987
 988 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
 989 {
 990         int r = 0;
 991         struct wl1273_core *core = radio->core;
 992
 993         if (core->mode == WL1273_MODE_OFF ||
 994             core->mode == WL1273_MODE_SUSPENDED)
 995                 return -EPERM;
 996
 997         if (new_mode == WL1273_RDS_RESET) {
 998                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
 999                 return r;
1000         }
1001
1002         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1003                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1004         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1005                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1006         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1007                 r = wl1273_fm_rds_off(radio);
1008         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1009                 r = wl1273_fm_rds_on(radio);
1010         } else {
1011                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1012                         __func__, new_mode);
1013                 r = -EINVAL;
1014         }
1015
1016         if (!r)
1017                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1018
1019         return r;
1020 }
1021
1022 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1023                                     size_t count, loff_t *ppos)
1024 {
1025         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1026         struct wl1273_core *core = radio->core;
1027         u16 val;
1028         int r;
1029
1030         dev_dbg(radio->dev, "%s\n", __func__);
1031
1032         if (core->mode != WL1273_MODE_TX)
1033                 return count;
1034
1035         if (radio->rds_users == 0) {
1036                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1037                 return 0;
1038         }
1039
1040         if (mutex_lock_interruptible(&core->lock))
1041                 return -EINTR;
1042         /*
1043          * Multiple processes can open the device, but only
1044          * one gets to write to it.
1045          */
1046         if (radio->owner && radio->owner != file) {
1047                 r = -EBUSY;
1048                 goto out;
1049         }
1050         radio->owner = file;
1051
1052         /* Manual Mode */
1053         if (count > 255)
1054                 val = 255;
1055         else
1056                 val = count;
1057
1058         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1059
1060         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1061                 r = -EFAULT;
1062                 goto out;
1063         }
1064
1065         dev_dbg(radio->dev, "Count: %d\n", val);
1066         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1067
1068         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1069         core->write_data(core, radio->write_buf, val + 1);
1070
1071         r = val;
1072 out:
1073         mutex_unlock(&core->lock);
1074
1075         return r;
1076 }
1077
1078 static unsigned int wl1273_fm_fops_poll(struct file *file,
1079                                         struct poll_table_struct *pts)
1080 {
1081         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1082         struct wl1273_core *core = radio->core;
1083
1084         if (radio->owner && radio->owner != file)
1085                 return -EBUSY;
1086
1087         radio->owner = file;
1088
1089         if (core->mode == WL1273_MODE_RX) {
1090                 poll_wait(file, &radio->read_queue, pts);
1091
1092                 if (radio->rd_index != radio->wr_index)
1093                         return POLLIN | POLLRDNORM;
1094
1095         } else if (core->mode == WL1273_MODE_TX) {
1096                 return POLLOUT | POLLWRNORM;
1097         }
1098
1099         return 0;
1100 }
1101
1102 static int wl1273_fm_fops_open(struct file *file)
1103 {
1104         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1105         struct wl1273_core *core = radio->core;
1106         int r = 0;
1107
1108         dev_dbg(radio->dev, "%s\n", __func__);
1109
1110         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1111             !radio->rds_users) {
1112                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1113
1114                 if (mutex_lock_interruptible(&core->lock))
1115                         return -EINTR;
1116
1117                 radio->irq_flags |= WL1273_RDS_EVENT;
1118
1119                 r = core->write(core, WL1273_INT_MASK_SET,
1120                                 radio->irq_flags);
1121                 if (r) {
1122                         mutex_unlock(&core->lock);
1123                         goto out;
1124                 }
1125
1126                 radio->rds_users++;
1127
1128                 mutex_unlock(&core->lock);
1129         }
1130 out:
1131         return r;
1132 }
1133
1134 static int wl1273_fm_fops_release(struct file *file)
1135 {
1136         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1137         struct wl1273_core *core = radio->core;
1138         int r = 0;
1139
1140         dev_dbg(radio->dev, "%s\n", __func__);
1141
1142         if (radio->rds_users > 0) {
1143                 radio->rds_users--;
1144                 if (radio->rds_users == 0) {
1145                         if (mutex_lock_interruptible(&core->lock))
1146                                 return -EINTR;
1147
1148                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1149
1150                         if (core->mode == WL1273_MODE_RX) {
1151                                 r = core->write(core,
1152                                                 WL1273_INT_MASK_SET,
1153                                                 radio->irq_flags);
1154                                 if (r) {
1155                                         mutex_unlock(&core->lock);
1156                                         goto out;
1157                                 }
1158                         }
1159                         mutex_unlock(&core->lock);
1160                 }
1161         }
1162
1163         if (file == radio->owner)
1164                 radio->owner = NULL;
1165 out:
1166         return r;
1167 }
1168
1169 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1170                                    size_t count, loff_t *ppos)
1171 {
1172         int r = 0;
1173         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1174         struct wl1273_core *core = radio->core;
1175         unsigned int block_count = 0;
1176         u16 val;
1177
1178         dev_dbg(radio->dev, "%s\n", __func__);
1179
1180         if (core->mode != WL1273_MODE_RX)
1181                 return 0;
1182
1183         if (radio->rds_users == 0) {
1184                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1185                 return 0;
1186         }
1187
1188         if (mutex_lock_interruptible(&core->lock))
1189                 return -EINTR;
1190
1191         /*
1192          * Multiple processes can open the device, but only
1193          * one at a time gets read access.
1194          */
1195         if (radio->owner && radio->owner != file) {
1196                 r = -EBUSY;
1197                 goto out;
1198         }
1199         radio->owner = file;
1200
1201         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1202         if (r) {
1203                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1204                 goto out;
1205         } else if (val == 0) {
1206                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1207                 r = -ENODATA;
1208                 goto out;
1209         }
1210
1211         /* block if no new data available */
1212         while (radio->wr_index == radio->rd_index) {
1213                 if (file->f_flags & O_NONBLOCK) {
1214                         r = -EWOULDBLOCK;
1215                         goto out;
1216                 }
1217
1218                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1219                 if (wait_event_interruptible(radio->read_queue,
1220                                              radio->wr_index !=
1221                                              radio->rd_index) < 0) {
1222                         r = -EINTR;
1223                         goto out;
1224                 }
1225         }
1226
1227         /* calculate block count from byte count */
1228         count /= RDS_BLOCK_SIZE;
1229
1230         /* copy RDS blocks from the internal buffer and to user buffer */
1231         while (block_count < count) {
1232                 if (radio->rd_index == radio->wr_index)
1233                         break;
1234
1235                 /* always transfer complete RDS blocks */
1236                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1237                                  RDS_BLOCK_SIZE))
1238                         break;
1239
1240                 /* increment and wrap the read pointer */
1241                 radio->rd_index += RDS_BLOCK_SIZE;
1242                 if (radio->rd_index >= radio->buf_size)
1243                         radio->rd_index = 0;
1244
1245                 /* increment counters */
1246                 block_count++;
1247                 buf += RDS_BLOCK_SIZE;
1248                 r += RDS_BLOCK_SIZE;
1249         }
1250
1251 out:
1252         dev_dbg(radio->dev, "%s: exit\n", __func__);
1253         mutex_unlock(&core->lock);
1254
1255         return r;
1256 }
1257
1258 static const struct v4l2_file_operations wl1273_fops = {
1259         .owner          = THIS_MODULE,
1260         .read           = wl1273_fm_fops_read,
1261         .write          = wl1273_fm_fops_write,
1262         .poll           = wl1273_fm_fops_poll,
1263         .unlocked_ioctl = video_ioctl2,
1264         .open           = wl1273_fm_fops_open,
1265         .release        = wl1273_fm_fops_release,
1266 };
1267
1268 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1269                                      struct v4l2_capability *capability)
1270 {
1271         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1272
1273         dev_dbg(radio->dev, "%s\n", __func__);
1274
1275         strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1276                 sizeof(capability->driver));
1277         strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1278                 sizeof(capability->card));
1279         strlcpy(capability->bus_info, radio->bus_type,
1280                 sizeof(capability->bus_info));
1281
1282         capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
1283                 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1284                 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1285                 V4L2_CAP_RDS_OUTPUT;
1286
1287         return 0;
1288 }
1289
1290 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1291                                     unsigned int *i)
1292 {
1293         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1294
1295         dev_dbg(radio->dev, "%s\n", __func__);
1296
1297         *i = 0;
1298
1299         return 0;
1300 }
1301
1302 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1303                                     unsigned int i)
1304 {
1305         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1306
1307         dev_dbg(radio->dev, "%s\n", __func__);
1308
1309         if (i != 0)
1310                 return -EINVAL;
1311
1312         return 0;
1313 }
1314
1315 /**
1316  * wl1273_fm_set_tx_power() -   Set the transmission power value.
1317  * @core:                       A pointer to the device struct.
1318  * @power:                      The new power value.
1319  */
1320 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1321 {
1322         struct wl1273_core *core = radio->core;
1323         int r;
1324
1325         if (core->mode == WL1273_MODE_OFF ||
1326             core->mode == WL1273_MODE_SUSPENDED)
1327                 return -EPERM;
1328
1329         mutex_lock(&core->lock);
1330
1331         /* Convert the dBuV value to chip presentation */
1332         r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1333         if (r)
1334                 goto out;
1335
1336         radio->tx_power = power;
1337
1338 out:
1339         mutex_unlock(&core->lock);
1340         return r;
1341 }
1342
1343 #define WL1273_SPACING_50kHz    1
1344 #define WL1273_SPACING_100kHz   2
1345 #define WL1273_SPACING_200kHz   4
1346
1347 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1348                                     unsigned int spacing)
1349 {
1350         struct wl1273_core *core = radio->core;
1351         int r;
1352
1353         if (spacing == 0) {
1354                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1355                                 WL1273_SPACING_100kHz);
1356                 radio->spacing = 100;
1357         } else if (spacing - 50000 < 25000) {
1358                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1359                                 WL1273_SPACING_50kHz);
1360                 radio->spacing = 50;
1361         } else if (spacing - 100000 < 50000) {
1362                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1363                                 WL1273_SPACING_100kHz);
1364                 radio->spacing = 100;
1365         } else {
1366                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1367                                 WL1273_SPACING_200kHz);
1368                 radio->spacing = 200;
1369         }
1370
1371         return r;
1372 }
1373
1374 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1375 {
1376         struct wl1273_device *radio = ctrl->priv;
1377         struct wl1273_core *core = radio->core;
1378
1379         dev_dbg(radio->dev, "%s\n", __func__);
1380
1381         if (mutex_lock_interruptible(&core->lock))
1382                 return -EINTR;
1383
1384         switch (ctrl->id) {
1385         case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1386                 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1387                 break;
1388
1389         default:
1390                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1391                          __func__, ctrl->id);
1392                 break;
1393         }
1394
1395         mutex_unlock(&core->lock);
1396
1397         return 0;
1398 }
1399
1400 #define WL1273_MUTE_SOFT_ENABLE    (1 << 0)
1401 #define WL1273_MUTE_AC             (1 << 1)
1402 #define WL1273_MUTE_HARD_LEFT      (1 << 2)
1403 #define WL1273_MUTE_HARD_RIGHT     (1 << 3)
1404 #define WL1273_MUTE_SOFT_FORCE     (1 << 4)
1405
1406 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1407 {
1408         return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1409 }
1410
1411 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1412 {
1413         struct wl1273_device *radio = to_radio(ctrl);
1414         struct wl1273_core *core = radio->core;
1415         int r = 0;
1416
1417         dev_dbg(radio->dev, "%s\n", __func__);
1418
1419         switch (ctrl->id) {
1420         case V4L2_CID_AUDIO_MUTE:
1421                 if (mutex_lock_interruptible(&core->lock))
1422                         return -EINTR;
1423
1424                 if (core->mode == WL1273_MODE_RX && ctrl->val)
1425                         r = core->write(core,
1426                                         WL1273_MUTE_STATUS_SET,
1427                                         WL1273_MUTE_HARD_LEFT |
1428                                         WL1273_MUTE_HARD_RIGHT);
1429                 else if (core->mode == WL1273_MODE_RX)
1430                         r = core->write(core,
1431                                         WL1273_MUTE_STATUS_SET, 0x0);
1432                 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1433                         r = core->write(core, WL1273_MUTE, 1);
1434                 else if (core->mode == WL1273_MODE_TX)
1435                         r = core->write(core, WL1273_MUTE, 0);
1436
1437                 mutex_unlock(&core->lock);
1438                 break;
1439
1440         case V4L2_CID_AUDIO_VOLUME:
1441                 if (ctrl->val == 0)
1442                         r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1443                 else
1444                         r =  core->set_volume(core, core->volume);
1445                 break;
1446
1447         case V4L2_CID_TUNE_PREEMPHASIS:
1448                 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1449                 break;
1450
1451         case V4L2_CID_TUNE_POWER_LEVEL:
1452                 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1453                 break;
1454
1455         default:
1456                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1457                          __func__, ctrl->id);
1458                 break;
1459         }
1460
1461         dev_dbg(radio->dev, "%s\n", __func__);
1462         return r;
1463 }
1464
1465 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1466                                     struct v4l2_audio *audio)
1467 {
1468         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1469
1470         dev_dbg(radio->dev, "%s\n", __func__);
1471
1472         if (audio->index > 1)
1473                 return -EINVAL;
1474
1475         strlcpy(audio->name, "Radio", sizeof(audio->name));
1476         audio->capability = V4L2_AUDCAP_STEREO;
1477
1478         return 0;
1479 }
1480
1481 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1482                                     struct v4l2_audio *audio)
1483 {
1484         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1485
1486         dev_dbg(radio->dev, "%s\n", __func__);
1487
1488         if (audio->index != 0)
1489                 return -EINVAL;
1490
1491         return 0;
1492 }
1493
1494 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1495 #define WL1273_RDS_SYNCHRONIZED 1
1496
1497 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1498                                     struct v4l2_tuner *tuner)
1499 {
1500         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1501         struct wl1273_core *core = radio->core;
1502         u16 val;
1503         int r;
1504
1505         dev_dbg(radio->dev, "%s\n", __func__);
1506
1507         if (tuner->index > 0)
1508                 return -EINVAL;
1509
1510         strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1511         tuner->type = V4L2_TUNER_RADIO;
1512
1513         tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1514         tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1515
1516         tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1517                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1518
1519         if (radio->stereo)
1520                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1521         else
1522                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1523
1524         if (core->mode != WL1273_MODE_RX)
1525                 return 0;
1526
1527         if (mutex_lock_interruptible(&core->lock))
1528                 return -EINTR;
1529
1530         r = core->read(core, WL1273_STEREO_GET, &val);
1531         if (r)
1532                 goto out;
1533
1534         if (val == 1)
1535                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1536         else
1537                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1538
1539         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1540         if (r)
1541                 goto out;
1542
1543         tuner->signal = (s16) val;
1544         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1545
1546         tuner->afc = 0;
1547
1548         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1549         if (r)
1550                 goto out;
1551
1552         if (val == WL1273_RDS_SYNCHRONIZED)
1553                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1554 out:
1555         mutex_unlock(&core->lock);
1556
1557         return r;
1558 }
1559
1560 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1561                                     struct v4l2_tuner *tuner)
1562 {
1563         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1564         struct wl1273_core *core = radio->core;
1565         int r = 0;
1566
1567         dev_dbg(radio->dev, "%s\n", __func__);
1568         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1569         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1570         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1571         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1572         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1573         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1574
1575         if (tuner->index > 0)
1576                 return -EINVAL;
1577
1578         if (mutex_lock_interruptible(&core->lock))
1579                 return -EINTR;
1580
1581         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1582         if (r)
1583                 goto out;
1584
1585         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1586                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1587         else
1588                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1589
1590         if (r)
1591                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1592
1593         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1594                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1595                 if (r < 0) {
1596                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1597                                  __func__, r);
1598                         goto out;
1599                 }
1600                 radio->stereo = false;
1601         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1602                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1603                 if (r < 0) {
1604                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1605                                  __func__, r);
1606                         goto out;
1607                 }
1608                 radio->stereo = true;
1609         } else {
1610                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1611                          __func__, tuner->audmode);
1612                 r = -EINVAL;
1613                 goto out;
1614         }
1615
1616 out:
1617         mutex_unlock(&core->lock);
1618
1619         return r;
1620 }
1621
1622 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1623                                         struct v4l2_frequency *freq)
1624 {
1625         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1626         struct wl1273_core *core = radio->core;
1627
1628         dev_dbg(radio->dev, "%s\n", __func__);
1629
1630         if (mutex_lock_interruptible(&core->lock))
1631                 return -EINTR;
1632
1633         freq->type = V4L2_TUNER_RADIO;
1634         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1635
1636         mutex_unlock(&core->lock);
1637
1638         return 0;
1639 }
1640
1641 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1642                                         struct v4l2_frequency *freq)
1643 {
1644         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1645         struct wl1273_core *core = radio->core;
1646         int r;
1647
1648         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1649
1650         if (freq->type != V4L2_TUNER_RADIO) {
1651                 dev_dbg(radio->dev,
1652                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1653                 return -EINVAL;
1654         }
1655
1656         if (mutex_lock_interruptible(&core->lock))
1657                 return -EINTR;
1658
1659         if (core->mode == WL1273_MODE_RX) {
1660                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1661
1662                 r = wl1273_fm_set_rx_freq(radio,
1663                                           WL1273_INV_FREQ(freq->frequency));
1664                 if (r)
1665                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1666                                  ": set frequency failed with %d\n", r);
1667         } else {
1668                 r = wl1273_fm_set_tx_freq(radio,
1669                                           WL1273_INV_FREQ(freq->frequency));
1670                 if (r)
1671                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1672                                  ": set frequency failed with %d\n", r);
1673         }
1674
1675         mutex_unlock(&core->lock);
1676
1677         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1678         return r;
1679 }
1680
1681 #define WL1273_DEFAULT_SEEK_LEVEL       7
1682
1683 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1684                                            struct v4l2_hw_freq_seek *seek)
1685 {
1686         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1687         struct wl1273_core *core = radio->core;
1688         int r;
1689
1690         dev_dbg(radio->dev, "%s\n", __func__);
1691
1692         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1693                 return -EINVAL;
1694
1695         if (mutex_lock_interruptible(&core->lock))
1696                 return -EINTR;
1697
1698         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1699         if (r)
1700                 goto out;
1701
1702         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1703         if (r)
1704                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1705
1706         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1707                                WL1273_DEFAULT_SEEK_LEVEL);
1708         if (r)
1709                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1710
1711 out:
1712         mutex_unlock(&core->lock);
1713         return r;
1714 }
1715
1716 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1717                                         struct v4l2_modulator *modulator)
1718 {
1719         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1720         struct wl1273_core *core = radio->core;
1721         int r = 0;
1722
1723         dev_dbg(radio->dev, "%s\n", __func__);
1724
1725         if (modulator->index > 0)
1726                 return -EINVAL;
1727
1728         if (mutex_lock_interruptible(&core->lock))
1729                 return -EINTR;
1730
1731         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1732         if (r)
1733                 goto out;
1734
1735         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1736                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1737         else
1738                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1739
1740         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1741                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1742         else
1743                 r = core->write(core, WL1273_MONO_SET,
1744                                 WL1273_RX_STEREO);
1745         if (r < 0)
1746                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1747                          "MONO_SET fails: %d\n", r);
1748 out:
1749         mutex_unlock(&core->lock);
1750
1751         return r;
1752 }
1753
1754 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1755                                         struct v4l2_modulator *modulator)
1756 {
1757         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1758         struct wl1273_core *core = radio->core;
1759         u16 val;
1760         int r;
1761
1762         dev_dbg(radio->dev, "%s\n", __func__);
1763
1764         strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1765                 sizeof(modulator->name));
1766
1767         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1768         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1769
1770         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1771                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1772
1773         if (core->mode != WL1273_MODE_TX)
1774                 return 0;
1775
1776         if (mutex_lock_interruptible(&core->lock))
1777                 return -EINTR;
1778
1779         r = core->read(core, WL1273_MONO_SET, &val);
1780         if (r)
1781                 goto out;
1782
1783         if (val == WL1273_TX_STEREO)
1784                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1785         else
1786                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1787
1788         if (radio->rds_on)
1789                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1790 out:
1791         mutex_unlock(&core->lock);
1792
1793         return 0;
1794 }
1795
1796 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1797 {
1798         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1799         struct wl1273_core *core = radio->core;
1800         struct device *dev = radio->dev;
1801         u16 val;
1802         int r;
1803
1804         dev_info(dev, DRIVER_DESC);
1805
1806         if (core->mode == WL1273_MODE_OFF) {
1807                 dev_info(dev, "Mode: Off\n");
1808                 return 0;
1809         }
1810
1811         if (core->mode == WL1273_MODE_SUSPENDED) {
1812                 dev_info(dev, "Mode: Suspended\n");
1813                 return 0;
1814         }
1815
1816         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1817         if (r)
1818                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1819         else
1820                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1821
1822         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1823         if (r)
1824                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1825         else
1826                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1827
1828         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1829         if (r)
1830                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1831         else
1832                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1833
1834         r = core->read(core, WL1273_BAND_SET, &val);
1835         if (r)
1836                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1837         else
1838                 dev_info(dev, "BAND: %d\n", val);
1839
1840         if (core->mode == WL1273_MODE_TX) {
1841                 r = core->read(core, WL1273_PUPD_SET, &val);
1842                 if (r)
1843                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1844                 else
1845                         dev_info(dev, "PUPD: 0x%04x\n", val);
1846
1847                 r = core->read(core, WL1273_CHANL_SET, &val);
1848                 if (r)
1849                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1850                 else
1851                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1852         } else if (core->mode == WL1273_MODE_RX) {
1853                 int bf = radio->rangelow;
1854
1855                 r = core->read(core, WL1273_FREQ_SET, &val);
1856                 if (r)
1857                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1858                 else
1859                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1860
1861                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1862                 if (r)
1863                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1864                                 __func__);
1865                 else if (val == 0)
1866                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1867                 else if (val == 1)
1868                         dev_info(dev, "MOST_MODE: Force mono output\n");
1869                 else
1870                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1871
1872                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1873                 if (r)
1874                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1875                 else if (val == 0)
1876                         dev_info(dev,
1877                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1878                 else if (val == 1)
1879                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1880                 else
1881                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1882
1883                 r = core->read(core, WL1273_STEREO_GET, &val);
1884                 if (r)
1885                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1886                 else if (val == 0)
1887                         dev_info(dev, "STEREO: Not detected\n");
1888                 else if (val == 1)
1889                         dev_info(dev, "STEREO: Detected\n");
1890                 else
1891                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1892
1893                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1894                 if (r)
1895                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1896                 else
1897                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1898
1899                 r = core->read(core, WL1273_POWER_SET, &val);
1900                 if (r)
1901                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1902                 else
1903                         dev_info(dev, "POWER: 0x%04x\n", val);
1904
1905                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1906                 if (r)
1907                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1908                 else
1909                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1910
1911                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1912                 if (r)
1913                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1914                                 __func__);
1915                 else if (val == 0)
1916                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1917
1918                 else if (val == 1)
1919                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1920                 else
1921                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1922
1923                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1924                 if (r)
1925                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1926                                 __func__);
1927                 else
1928                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1929
1930                 r = core->read(core, WL1273_VOLUME_SET, &val);
1931                 if (r)
1932                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1933                 else
1934                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1935         }
1936
1937         return 0;
1938 }
1939
1940 static void wl1273_vdev_release(struct video_device *dev)
1941 {
1942 }
1943
1944 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1945         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1946         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1947 };
1948
1949 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1950         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1951         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1952         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1953         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1954         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1955         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1956         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1957         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1958         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1959         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1960         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1961         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1962         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1963 };
1964
1965 static struct video_device wl1273_viddev_template = {
1966         .fops                   = &wl1273_fops,
1967         .ioctl_ops              = &wl1273_ioctl_ops,
1968         .name                   = WL1273_FM_DRIVER_NAME,
1969         .release                = wl1273_vdev_release,
1970 };
1971
1972 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1973 {
1974         struct wl1273_device *radio = platform_get_drvdata(pdev);
1975         struct wl1273_core *core = radio->core;
1976
1977         dev_info(&pdev->dev, "%s.\n", __func__);
1978
1979         free_irq(core->client->irq, radio);
1980         core->pdata->free_resources();
1981
1982         v4l2_ctrl_handler_free(&radio->ctrl_handler);
1983         video_unregister_device(&radio->videodev);
1984         v4l2_device_unregister(&radio->v4l2dev);
1985         kfree(radio->buffer);
1986         kfree(radio->write_buf);
1987         kfree(radio);
1988
1989         return 0;
1990 }
1991
1992 static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev)
1993 {
1994         struct wl1273_core **core = pdev->dev.platform_data;
1995         struct wl1273_device *radio;
1996         struct v4l2_ctrl *ctrl;
1997         int r = 0;
1998
1999         pr_debug("%s\n", __func__);
2000
2001         if (!core) {
2002                 dev_err(&pdev->dev, "No platform data.\n");
2003                 r = -EINVAL;
2004                 goto pdata_err;
2005         }
2006
2007         radio = kzalloc(sizeof(*radio), GFP_KERNEL);
2008         if (!radio) {
2009                 r = -ENOMEM;
2010                 goto pdata_err;
2011         }
2012
2013         /* RDS buffer allocation */
2014         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2015         radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
2016         if (!radio->buffer) {
2017                 pr_err("Cannot allocate memory for RDS buffer.\n");
2018                 r = -ENOMEM;
2019                 goto err_kmalloc;
2020         }
2021
2022         radio->core = *core;
2023         radio->irq_flags = WL1273_IRQ_MASK;
2024         radio->dev = &radio->core->client->dev;
2025         radio->rds_on = false;
2026         radio->core->mode = WL1273_MODE_OFF;
2027         radio->tx_power = 118;
2028         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2029         radio->band = WL1273_BAND_OTHER;
2030         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2031         radio->core->channel_number = 2;
2032         radio->core->volume = WL1273_DEFAULT_VOLUME;
2033         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2034         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2035         radio->rangelow = WL1273_BAND_OTHER_LOW;
2036         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2037         radio->stereo = true;
2038         radio->bus_type = "I2C";
2039
2040         if (radio->core->pdata->request_resources) {
2041                 r = radio->core->pdata->request_resources(radio->core->client);
2042                 if (r) {
2043                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2044                                 ": Cannot get platform data\n");
2045                         goto err_resources;
2046                 }
2047
2048                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2049
2050                 r = request_threaded_irq(radio->core->client->irq, NULL,
2051                                          wl1273_fm_irq_thread_handler,
2052                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2053                                          "wl1273-fm", radio);
2054                 if (r < 0) {
2055                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2056                                 ": Unable to register IRQ handler: %d\n", r);
2057                         goto err_request_irq;
2058                 }
2059         } else {
2060                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2061                         " not configured");
2062                 r = -EINVAL;
2063                 goto err_resources;
2064         }
2065
2066         init_completion(&radio->busy);
2067         init_waitqueue_head(&radio->read_queue);
2068
2069         radio->write_buf = kmalloc(256, GFP_KERNEL);
2070         if (!radio->write_buf) {
2071                 r = -ENOMEM;
2072                 goto write_buf_err;
2073         }
2074
2075         radio->dev = &pdev->dev;
2076         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2077         radio->rds_users = 0;
2078
2079         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2080         if (r) {
2081                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2082                 goto device_register_err;
2083         }
2084
2085         /* V4L2 configuration */
2086         memcpy(&radio->videodev, &wl1273_viddev_template,
2087                sizeof(wl1273_viddev_template));
2088
2089         radio->videodev.v4l2_dev = &radio->v4l2dev;
2090
2091         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2092
2093         /* add in ascending ID order */
2094         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2095                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2096                           WL1273_DEFAULT_VOLUME);
2097
2098         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2099                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2100
2101         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2102                                V4L2_CID_TUNE_PREEMPHASIS,
2103                                V4L2_PREEMPHASIS_75_uS, 0x03,
2104                                V4L2_PREEMPHASIS_50_uS);
2105
2106         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2107                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2108
2109         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2110                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2111                                  0, 255, 1, 255);
2112         if (ctrl)
2113                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2114
2115         if (radio->ctrl_handler.error) {
2116                 r = radio->ctrl_handler.error;
2117                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2118                 goto handler_init_err;
2119         }
2120
2121         video_set_drvdata(&radio->videodev, radio);
2122         platform_set_drvdata(pdev, radio);
2123
2124         /* register video device */
2125         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2126         if (r) {
2127                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2128                         ": Could not register video device\n");
2129                 goto handler_init_err;
2130         }
2131
2132         return 0;
2133
2134 handler_init_err:
2135         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2136         v4l2_device_unregister(&radio->v4l2dev);
2137 device_register_err:
2138         kfree(radio->write_buf);
2139 write_buf_err:
2140         free_irq(radio->core->client->irq, radio);
2141 err_request_irq:
2142         radio->core->pdata->free_resources();
2143 err_resources:
2144         kfree(radio->buffer);
2145 err_kmalloc:
2146         kfree(radio);
2147 pdata_err:
2148         return r;
2149 }
2150
2151 MODULE_ALIAS("platform:wl1273_fm_radio");
2152
2153 static struct platform_driver wl1273_fm_radio_driver = {
2154         .probe          = wl1273_fm_radio_probe,
2155         .remove         = __devexit_p(wl1273_fm_radio_remove),
2156         .driver         = {
2157                 .name   = "wl1273_fm_radio",
2158                 .owner  = THIS_MODULE,
2159         },
2160 };
2161
2162 static int __init wl1273_fm_module_init(void)
2163 {
2164         pr_info("%s\n", __func__);
2165         return platform_driver_register(&wl1273_fm_radio_driver);
2166 }
2167 module_init(wl1273_fm_module_init);
2168
2169 static void __exit wl1273_fm_module_exit(void)
2170 {
2171         platform_driver_unregister(&wl1273_fm_radio_driver);
2172         pr_info(DRIVER_DESC ", Exiting.\n");
2173 }
2174 module_exit(wl1273_fm_module_exit);
2175
2176 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2177 MODULE_DESCRIPTION(DRIVER_DESC);
2178 MODULE_LICENSE("GPL");