drivers/media/radio/radio-wl1273.c

   1 /*
   2  * Driver for the Texas Instruments WL1273 FM radio.
   3  *
   4  * Copyright (C) 2011 Nokia Corporation
   5  * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/delay.h>
  18 #include <linux/firmware.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/mfd/wl1273-core.h>
  21 #include <linux/slab.h>
  22 #include <linux/module.h>
  23 #include <media/v4l2-common.h>
  24 #include <media/v4l2-ctrls.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ioctl.h>
  27
  28 #define DRIVER_DESC "Wl1273 FM Radio"
  29
  30 #define WL1273_POWER_SET_OFF            0
  31 #define WL1273_POWER_SET_FM             BIT(0)
  32 #define WL1273_POWER_SET_RDS            BIT(1)
  33 #define WL1273_POWER_SET_RETENTION      BIT(4)
  34
  35 #define WL1273_PUPD_SET_OFF             0x00
  36 #define WL1273_PUPD_SET_ON              0x01
  37 #define WL1273_PUPD_SET_RETENTION       0x10
  38
  39 #define WL1273_FREQ(x)          (x * 10000 / 625)
  40 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  41
  42 /*
  43  * static int radio_nr - The number of the radio device
  44  *
  45  * The default is 0.
  46  */
  47 static int radio_nr;
  48 module_param(radio_nr, int, 0);
  49 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  50
  51 struct wl1273_device {
  52         char *bus_type;
  53
  54         u8 forbidden;
  55         unsigned int preemphasis;
  56         unsigned int spacing;
  57         unsigned int tx_power;
  58         unsigned int rx_frequency;
  59         unsigned int tx_frequency;
  60         unsigned int rangelow;
  61         unsigned int rangehigh;
  62         unsigned int band;
  63         bool stereo;
  64
  65         /* RDS */
  66         unsigned int rds_on;
  67
  68         wait_queue_head_t read_queue;
  69         struct mutex lock; /* for serializing fm radio operations */
  70         struct completion busy;
  71
  72         unsigned char *buffer;
  73         unsigned int buf_size;
  74         unsigned int rd_index;
  75         unsigned int wr_index;
  76
  77         /* Selected interrupts */
  78         u16 irq_flags;
  79         u16 irq_received;
  80
  81         struct v4l2_ctrl_handler ctrl_handler;
  82         struct v4l2_device v4l2dev;
  83         struct video_device videodev;
  84         struct device *dev;
  85         struct wl1273_core *core;
  86         struct file *owner;
  87         char *write_buf;
  88         unsigned int rds_users;
  89 };
  90
  91 #define WL1273_IRQ_MASK  (WL1273_FR_EVENT               |       \
  92                           WL1273_POW_ENB_EVENT)
  93
  94 /*
  95  * static unsigned int rds_buf - the number of RDS buffer blocks used.
  96  *
  97  * The default number is 100.
  98  */
  99 static unsigned int rds_buf = 100;
 100 module_param(rds_buf, uint, 0);
 101 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
 102
 103 static int wl1273_fm_write_fw(struct wl1273_core *core,
 104                               __u8 *fw, int len)
 105 {
 106         struct i2c_client *client = core->client;
 107         struct i2c_msg msg;
 108         int i, r = 0;
 109
 110         msg.addr = client->addr;
 111         msg.flags = 0;
 112
 113         for (i = 0; i <= len; i++) {
 114                 msg.len = fw[0];
 115                 msg.buf = fw + 1;
 116
 117                 fw += msg.len + 1;
 118                 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
 119
 120                 r = i2c_transfer(client->adapter, &msg, 1);
 121                 if (r < 0 && i < len + 1)
 122                         break;
 123         }
 124
 125         dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
 126         dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
 127
 128         /* Last transfer always fails. */
 129         if (i == len || r == 1)
 130                 r = 0;
 131
 132         return r;
 133 }
 134
 135 #define WL1273_FIFO_HAS_DATA(status)    (1 << 5 & status)
 136 #define WL1273_RDS_CORRECTABLE_ERROR    (1 << 3)
 137 #define WL1273_RDS_UNCORRECTABLE_ERROR  (1 << 4)
 138
 139 static int wl1273_fm_rds(struct wl1273_device *radio)
 140 {
 141         struct wl1273_core *core = radio->core;
 142         struct i2c_client *client = core->client;
 143         u16 val;
 144         u8 b0 = WL1273_RDS_DATA_GET, status;
 145         struct v4l2_rds_data rds = { 0, 0, 0 };
 146         struct i2c_msg msg[] = {
 147                 {
 148                         .addr = client->addr,
 149                         .flags = 0,
 150                         .buf = &b0,
 151                         .len = 1,
 152                 },
 153                 {
 154                         .addr = client->addr,
 155                         .flags = I2C_M_RD,
 156                         .buf = (u8 *) &rds,
 157                         .len = sizeof(rds),
 158                 }
 159         };
 160         int r;
 161
 162         if (core->mode != WL1273_MODE_RX)
 163                 return 0;
 164
 165         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
 166         if (r)
 167                 return r;
 168
 169         if ((val & 0x01) == 0) {
 170                 /* RDS decoder not synchronized */
 171                 return -EAGAIN;
 172         }
 173
 174         /* copy all four RDS blocks to internal buffer */
 175         do {
 176                 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
 177                 if (r != ARRAY_SIZE(msg)) {
 178                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
 179                                 ": %s: read_rds error r == %i)\n",
 180                                 __func__, r);
 181                 }
 182
 183                 status = rds.block;
 184
 185                 if (!WL1273_FIFO_HAS_DATA(status))
 186                         break;
 187
 188                 /* copy bits 0-2 (the block ID) to bits 3-5 */
 189                 rds.block = V4L2_RDS_BLOCK_MSK & status;
 190                 rds.block |= rds.block << 3;
 191
 192                 /* copy the error bits to standard positions */
 193                 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
 194                         rds.block |= V4L2_RDS_BLOCK_ERROR;
 195                         rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
 196                 } else if  (WL1273_RDS_CORRECTABLE_ERROR & status) {
 197                         rds.block &= ~V4L2_RDS_BLOCK_ERROR;
 198                         rds.block |= V4L2_RDS_BLOCK_CORRECTED;
 199                 }
 200
 201                 /* copy RDS block to internal buffer */
 202                 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
 203                 radio->wr_index += 3;
 204
 205                 /* wrap write pointer */
 206                 if (radio->wr_index >= radio->buf_size)
 207                         radio->wr_index = 0;
 208
 209                 /* check for overflow & start over */
 210                 if (radio->wr_index == radio->rd_index) {
 211                         dev_dbg(radio->dev, "RDS OVERFLOW");
 212
 213                         radio->rd_index = 0;
 214                         radio->wr_index = 0;
 215                         break;
 216                 }
 217         } while (WL1273_FIFO_HAS_DATA(status));
 218
 219         /* wake up read queue */
 220         if (radio->wr_index != radio->rd_index)
 221                 wake_up_interruptible(&radio->read_queue);
 222
 223         return 0;
 224 }
 225
 226 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
 227 {
 228         struct wl1273_device *radio = dev_id;
 229         struct wl1273_core *core = radio->core;
 230         u16 flags;
 231         int r;
 232
 233         r = core->read(core, WL1273_FLAG_GET, &flags);
 234         if (r)
 235                 goto out;
 236
 237         if (flags & WL1273_BL_EVENT) {
 238                 radio->irq_received = flags;
 239                 dev_dbg(radio->dev, "IRQ: BL\n");
 240         }
 241
 242         if (flags & WL1273_RDS_EVENT) {
 243                 msleep(200);
 244
 245                 wl1273_fm_rds(radio);
 246         }
 247
 248         if (flags & WL1273_BBLK_EVENT)
 249                 dev_dbg(radio->dev, "IRQ: BBLK\n");
 250
 251         if (flags & WL1273_LSYNC_EVENT)
 252                 dev_dbg(radio->dev, "IRQ: LSYNC\n");
 253
 254         if (flags & WL1273_LEV_EVENT) {
 255                 u16 level;
 256
 257                 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
 258                 if (r)
 259                         goto out;
 260
 261                 if (level > 14)
 262                         dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
 263         }
 264
 265         if (flags & WL1273_IFFR_EVENT)
 266                 dev_dbg(radio->dev, "IRQ: IFFR\n");
 267
 268         if (flags & WL1273_PI_EVENT)
 269                 dev_dbg(radio->dev, "IRQ: PI\n");
 270
 271         if (flags & WL1273_PD_EVENT)
 272                 dev_dbg(radio->dev, "IRQ: PD\n");
 273
 274         if (flags & WL1273_STIC_EVENT)
 275                 dev_dbg(radio->dev, "IRQ: STIC\n");
 276
 277         if (flags & WL1273_MAL_EVENT)
 278                 dev_dbg(radio->dev, "IRQ: MAL\n");
 279
 280         if (flags & WL1273_POW_ENB_EVENT) {
 281                 complete(&radio->busy);
 282                 dev_dbg(radio->dev, "NOT BUSY\n");
 283                 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
 284         }
 285
 286         if (flags & WL1273_SCAN_OVER_EVENT)
 287                 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
 288
 289         if (flags & WL1273_ERROR_EVENT)
 290                 dev_dbg(radio->dev, "IRQ: ERROR\n");
 291
 292         if (flags & WL1273_FR_EVENT) {
 293                 u16 freq;
 294
 295                 dev_dbg(radio->dev, "IRQ: FR:\n");
 296
 297                 if (core->mode == WL1273_MODE_RX) {
 298                         r = core->write(core, WL1273_TUNER_MODE_SET,
 299                                         TUNER_MODE_STOP_SEARCH);
 300                         if (r) {
 301                                 dev_err(radio->dev,
 302                                         "%s: TUNER_MODE_SET fails: %d\n",
 303                                         __func__, r);
 304                                 goto out;
 305                         }
 306
 307                         r = core->read(core, WL1273_FREQ_SET, &freq);
 308                         if (r)
 309                                 goto out;
 310
 311                         if (radio->band == WL1273_BAND_JAPAN)
 312                                 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
 313                                         freq * 50;
 314                         else
 315                                 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
 316                                         freq * 50;
 317                         /*
 318                          *  The driver works better with this msleep,
 319                          *  the documentation doesn't mention it.
 320                          */
 321                         usleep_range(10000, 15000);
 322
 323                         dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
 324
 325                 } else {
 326                         r = core->read(core, WL1273_CHANL_SET, &freq);
 327                         if (r)
 328                                 goto out;
 329
 330                         dev_dbg(radio->dev, "%dkHz\n", freq);
 331                 }
 332                 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
 333         }
 334
 335 out:
 336         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 337         complete(&radio->busy);
 338
 339         return IRQ_HANDLED;
 340 }
 341
 342 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 343 {
 344         struct wl1273_core *core = radio->core;
 345         int r = 0;
 346         unsigned long t;
 347
 348         if (freq < WL1273_BAND_TX_LOW) {
 349                 dev_err(radio->dev,
 350                         "Frequency out of range: %d < %d\n", freq,
 351                         WL1273_BAND_TX_LOW);
 352                 return -ERANGE;
 353         }
 354
 355         if (freq > WL1273_BAND_TX_HIGH) {
 356                 dev_err(radio->dev,
 357                         "Frequency out of range: %d > %d\n", freq,
 358                         WL1273_BAND_TX_HIGH);
 359                 return -ERANGE;
 360         }
 361
 362         /*
 363          *  The driver works better with this sleep,
 364          *  the documentation doesn't mention it.
 365          */
 366         usleep_range(5000, 10000);
 367
 368         dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 369
 370         /* Set the current tx channel */
 371         r = core->write(core, WL1273_CHANL_SET, freq / 10);
 372         if (r)
 373                 return r;
 374
 375         reinit_completion(&radio->busy);
 376
 377         /* wait for the FR IRQ */
 378         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 379         if (!t)
 380                 return -ETIMEDOUT;
 381
 382         dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
 383
 384         /* Enable the output power */
 385         r = core->write(core, WL1273_POWER_ENB_SET, 1);
 386         if (r)
 387                 return r;
 388
 389         reinit_completion(&radio->busy);
 390
 391         /* wait for the POWER_ENB IRQ */
 392         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 393         if (!t)
 394                 return -ETIMEDOUT;
 395
 396         radio->tx_frequency = freq;
 397         dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
 398
 399         return  0;
 400 }
 401
 402 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 403 {
 404         struct wl1273_core *core = radio->core;
 405         int r, f;
 406         unsigned long t;
 407
 408         if (freq < radio->rangelow) {
 409                 dev_err(radio->dev,
 410                         "Frequency out of range: %d < %d\n", freq,
 411                         radio->rangelow);
 412                 r = -ERANGE;
 413                 goto err;
 414         }
 415
 416         if (freq > radio->rangehigh) {
 417                 dev_err(radio->dev,
 418                         "Frequency out of range: %d > %d\n", freq,
 419                         radio->rangehigh);
 420                 r = -ERANGE;
 421                 goto err;
 422         }
 423
 424         dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 425
 426         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 427
 428         if (radio->band == WL1273_BAND_JAPAN)
 429                 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 430         else
 431                 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 432
 433         r = core->write(core, WL1273_FREQ_SET, f);
 434         if (r) {
 435                 dev_err(radio->dev, "FREQ_SET fails\n");
 436                 goto err;
 437         }
 438
 439         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 440         if (r) {
 441                 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 442                 goto err;
 443         }
 444
 445         reinit_completion(&radio->busy);
 446
 447         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 448         if (!t) {
 449                 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 450                 return -ETIMEDOUT;
 451         }
 452
 453         radio->rd_index = 0;
 454         radio->wr_index = 0;
 455         radio->rx_frequency = freq;
 456         return 0;
 457 err:
 458         return r;
 459 }
 460
 461 static int wl1273_fm_get_freq(struct wl1273_device *radio)
 462 {
 463         struct wl1273_core *core = radio->core;
 464         unsigned int freq;
 465         u16 f;
 466         int r;
 467
 468         if (core->mode == WL1273_MODE_RX) {
 469                 r = core->read(core, WL1273_FREQ_SET, &f);
 470                 if (r)
 471                         return r;
 472
 473                 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 474                 if (radio->band == WL1273_BAND_JAPAN)
 475                         freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 476                 else
 477                         freq = WL1273_BAND_OTHER_LOW + 50 * f;
 478         } else {
 479                 r = core->read(core, WL1273_CHANL_SET, &f);
 480                 if (r)
 481                         return r;
 482
 483                 freq = f * 10;
 484         }
 485
 486         return freq;
 487 }
 488
 489 /**
 490  * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 491  * @radio:                              A pointer to the device struct.
 492  *
 493  * The firmware file consists of arrays of bytes where the first byte
 494  * gives the array length. The first byte in the file gives the
 495  * number of these arrays.
 496  */
 497 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 498 {
 499         struct wl1273_core *core = radio->core;
 500         unsigned int packet_num;
 501         const struct firmware *fw_p;
 502         const char *fw_name = "radio-wl1273-fw.bin";
 503         struct device *dev = radio->dev;
 504         __u8 *ptr;
 505         int r;
 506
 507         dev_dbg(dev, "%s:\n", __func__);
 508
 509         /*
 510          * Uploading the firmware patch is not always necessary,
 511          * so we only print an info message.
 512          */
 513         if (request_firmware(&fw_p, fw_name, dev)) {
 514                 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 515
 516                 return 0;
 517         }
 518
 519         ptr = (__u8 *) fw_p->data;
 520         packet_num = ptr[0];
 521         dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 522
 523         r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 524         if (r) {
 525                 dev_err(dev, "FW upload error: %d\n", r);
 526                 goto out;
 527         }
 528
 529         /* ignore possible error here */
 530         core->write(core, WL1273_RESET, 0);
 531
 532         dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 533 out:
 534         release_firmware(fw_p);
 535         return r;
 536 }
 537
 538 static int wl1273_fm_stop(struct wl1273_device *radio)
 539 {
 540         struct wl1273_core *core = radio->core;
 541
 542         if (core->mode == WL1273_MODE_RX) {
 543                 int r = core->write(core, WL1273_POWER_SET,
 544                                     WL1273_POWER_SET_OFF);
 545                 if (r)
 546                         dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 547                                 __func__, r);
 548         } else if (core->mode == WL1273_MODE_TX) {
 549                 int r = core->write(core, WL1273_PUPD_SET,
 550                                     WL1273_PUPD_SET_OFF);
 551                 if (r)
 552                         dev_err(radio->dev,
 553                                 "%s: PUPD_SET fails: %d\n", __func__, r);
 554         }
 555
 556         if (core->pdata->disable) {
 557                 core->pdata->disable();
 558                 dev_dbg(radio->dev, "Back to reset\n");
 559         }
 560
 561         return 0;
 562 }
 563
 564 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 565 {
 566         struct wl1273_core *core = radio->core;
 567         struct wl1273_fm_platform_data *pdata = core->pdata;
 568         struct device *dev = radio->dev;
 569         int r = -EINVAL;
 570
 571         if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 572                 dev_dbg(radio->dev, "Out of reset\n");
 573
 574                 pdata->enable();
 575                 msleep(250);
 576         }
 577
 578         if (new_mode == WL1273_MODE_RX) {
 579                 u16 val = WL1273_POWER_SET_FM;
 580
 581                 if (radio->rds_on)
 582                         val |= WL1273_POWER_SET_RDS;
 583
 584                 /* If this fails try again */
 585                 r = core->write(core, WL1273_POWER_SET, val);
 586                 if (r) {
 587                         msleep(100);
 588
 589                         r = core->write(core, WL1273_POWER_SET, val);
 590                         if (r) {
 591                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 592                                 goto fail;
 593                         }
 594                 }
 595
 596                 /* rds buffer configuration */
 597                 radio->wr_index = 0;
 598                 radio->rd_index = 0;
 599
 600         } else if (new_mode == WL1273_MODE_TX) {
 601                 /* If this fails try again once */
 602                 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 603                 if (r) {
 604                         msleep(100);
 605                         r = core->write(core, WL1273_PUPD_SET,
 606                                         WL1273_PUPD_SET_ON);
 607                         if (r) {
 608                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 609                                 goto fail;
 610                         }
 611                 }
 612
 613                 if (radio->rds_on) {
 614                         r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 615                         if (r) {
 616                                 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
 617                                         __func__);
 618                                 goto fail;
 619                         }
 620                 } else {
 621                         r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 622                         if (r) {
 623                                 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
 624                                         __func__);
 625                                 goto fail;
 626                         }
 627                 }
 628         } else {
 629                 dev_warn(dev, "%s: Illegal mode.\n", __func__);
 630         }
 631
 632         if (core->mode == WL1273_MODE_OFF) {
 633                 r = wl1273_fm_upload_firmware_patch(radio);
 634                 if (r)
 635                         dev_warn(dev, "Firmware upload failed.\n");
 636
 637                 /*
 638                  * Sometimes the chip is in a wrong power state at this point.
 639                  * So we set the power once again.
 640                  */
 641                 if (new_mode == WL1273_MODE_RX) {
 642                         u16 val = WL1273_POWER_SET_FM;
 643
 644                         if (radio->rds_on)
 645                                 val |= WL1273_POWER_SET_RDS;
 646
 647                         r = core->write(core, WL1273_POWER_SET, val);
 648                         if (r) {
 649                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 650                                 goto fail;
 651                         }
 652                 } else if (new_mode == WL1273_MODE_TX) {
 653                         r = core->write(core, WL1273_PUPD_SET,
 654                                         WL1273_PUPD_SET_ON);
 655                         if (r) {
 656                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 657                                 goto fail;
 658                         }
 659                 }
 660         }
 661
 662         return 0;
 663 fail:
 664         if (pdata->disable)
 665                 pdata->disable();
 666
 667         dev_dbg(dev, "%s: return: %d\n", __func__, r);
 668         return r;
 669 }
 670
 671 static int wl1273_fm_suspend(struct wl1273_device *radio)
 672 {
 673         struct wl1273_core *core = radio->core;
 674         int r = 0;
 675
 676         /* Cannot go from OFF to SUSPENDED */
 677         if (core->mode == WL1273_MODE_RX)
 678                 r = core->write(core, WL1273_POWER_SET,
 679                                 WL1273_POWER_SET_RETENTION);
 680         else if (core->mode == WL1273_MODE_TX)
 681                 r = core->write(core, WL1273_PUPD_SET,
 682                                 WL1273_PUPD_SET_RETENTION);
 683         else
 684                 r = -EINVAL;
 685
 686         if (r) {
 687                 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 688                 goto out;
 689         }
 690
 691 out:
 692         return r;
 693 }
 694
 695 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 696 {
 697         struct wl1273_core *core = radio->core;
 698         struct device *dev = radio->dev;
 699         int old_mode;
 700         int r;
 701
 702         dev_dbg(dev, "%s\n", __func__);
 703         dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 704
 705         old_mode = core->mode;
 706         if (mode & radio->forbidden) {
 707                 r = -EPERM;
 708                 goto out;
 709         }
 710
 711         switch (mode) {
 712         case WL1273_MODE_RX:
 713         case WL1273_MODE_TX:
 714                 r = wl1273_fm_start(radio, mode);
 715                 if (r) {
 716                         dev_err(dev, "%s: Cannot start.\n", __func__);
 717                         wl1273_fm_stop(radio);
 718                         goto out;
 719                 }
 720
 721                 core->mode = mode;
 722                 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 723                 if (r) {
 724                         dev_err(dev, "INT_MASK_SET fails.\n");
 725                         goto out;
 726                 }
 727
 728                 /* remember previous settings */
 729                 if (mode == WL1273_MODE_RX) {
 730                         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 731                         if (r) {
 732                                 dev_err(dev, "set freq fails: %d.\n", r);
 733                                 goto out;
 734                         }
 735
 736                         r = core->set_volume(core, core->volume);
 737                         if (r) {
 738                                 dev_err(dev, "set volume fails: %d.\n", r);
 739                                 goto out;
 740                         }
 741
 742                         dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 743                                 core->volume);
 744                 } else {
 745                         r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 746                         if (r) {
 747                                 dev_err(dev, "set freq fails: %d.\n", r);
 748                                 goto out;
 749                         }
 750                 }
 751
 752                 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 753
 754                 r = core->set_audio(core, core->audio_mode);
 755                 if (r)
 756                         dev_err(dev, "Cannot set audio mode.\n");
 757                 break;
 758
 759         case WL1273_MODE_OFF:
 760                 r = wl1273_fm_stop(radio);
 761                 if (r)
 762                         dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 763                 else
 764                         core->mode = WL1273_MODE_OFF;
 765
 766                 break;
 767
 768         case WL1273_MODE_SUSPENDED:
 769                 r = wl1273_fm_suspend(radio);
 770                 if (r)
 771                         dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 772                 else
 773                         core->mode = WL1273_MODE_SUSPENDED;
 774
 775                 break;
 776
 777         default:
 778                 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 779                 r = -EINVAL;
 780                 break;
 781         }
 782 out:
 783         if (r)
 784                 core->mode = old_mode;
 785
 786         return r;
 787 }
 788
 789 static int wl1273_fm_set_seek(struct wl1273_device *radio,
 790                               unsigned int wrap_around,
 791                               unsigned int seek_upward,
 792                               int level)
 793 {
 794         struct wl1273_core *core = radio->core;
 795         int r = 0;
 796         unsigned int dir = (seek_upward == 0) ? 0 : 1;
 797         unsigned int f;
 798
 799         f = radio->rx_frequency;
 800         dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 801
 802         if (dir && f + radio->spacing <= radio->rangehigh)
 803                 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 804         else if (dir && wrap_around)
 805                 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 806         else if (f - radio->spacing >= radio->rangelow)
 807                 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 808         else if (wrap_around)
 809                 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 810
 811         if (r)
 812                 goto out;
 813
 814         if (level < SCHAR_MIN || level > SCHAR_MAX)
 815                 return -EINVAL;
 816
 817         reinit_completion(&radio->busy);
 818         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 819
 820         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 821         if (r)
 822                 goto out;
 823
 824         dev_dbg(radio->dev, "%s\n", __func__);
 825
 826         r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 827         if (r)
 828                 goto out;
 829
 830         r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 831         if (r)
 832                 goto out;
 833
 834         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 835         if (r)
 836                 goto out;
 837
 838         /* wait for the FR IRQ */
 839         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 840         if (!(radio->irq_received & WL1273_BL_EVENT)) {
 841                 r = -ETIMEDOUT;
 842                 goto out;
 843         }
 844
 845         radio->irq_received &= ~WL1273_BL_EVENT;
 846
 847         if (!wrap_around)
 848                 goto out;
 849
 850         /* Wrap around */
 851         dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 852
 853         if (seek_upward)
 854                 f = radio->rangelow;
 855         else
 856                 f = radio->rangehigh;
 857
 858         r = wl1273_fm_set_rx_freq(radio, f);
 859         if (r)
 860                 goto out;
 861
 862         reinit_completion(&radio->busy);
 863         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 864
 865         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 866         if (r)
 867                 goto out;
 868
 869         /* wait for the FR IRQ */
 870         if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
 871                 r = -ETIMEDOUT;
 872 out:
 873         dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 874         return r;
 875 }
 876
 877 /**
 878  * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 879  * @radio:                      A pointer to the device struct.
 880  */
 881 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 882 {
 883         struct wl1273_core *core = radio->core;
 884         struct device *dev = radio->dev;
 885         u16 val;
 886         int r;
 887
 888         if (core->mode == WL1273_MODE_OFF ||
 889             core->mode == WL1273_MODE_SUSPENDED)
 890                 return -EPERM;
 891
 892         r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 893         if (r) {
 894                 dev_err(dev, "%s: read error: %d\n", __func__, r);
 895                 goto out;
 896         }
 897
 898 out:
 899         return val;
 900 }
 901
 902 /**
 903  * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 904  * @radio:                       A pointer to the device struct.
 905  * @preemphasis:                 The new pre-amphasis value.
 906  *
 907  * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 908  * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 909  */
 910 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 911                                      unsigned int preemphasis)
 912 {
 913         struct wl1273_core *core = radio->core;
 914         int r;
 915         u16 em;
 916
 917         if (core->mode == WL1273_MODE_OFF ||
 918             core->mode == WL1273_MODE_SUSPENDED)
 919                 return -EPERM;
 920
 921         mutex_lock(&core->lock);
 922
 923         switch (preemphasis) {
 924         case V4L2_PREEMPHASIS_DISABLED:
 925                 em = 1;
 926                 break;
 927         case V4L2_PREEMPHASIS_50_uS:
 928                 em = 0;
 929                 break;
 930         case V4L2_PREEMPHASIS_75_uS:
 931                 em = 2;
 932                 break;
 933         default:
 934                 r = -EINVAL;
 935                 goto out;
 936         }
 937
 938         r = core->write(core, WL1273_PREMPH_SET, em);
 939         if (r)
 940                 goto out;
 941
 942         radio->preemphasis = preemphasis;
 943
 944 out:
 945         mutex_unlock(&core->lock);
 946         return r;
 947 }
 948
 949 static int wl1273_fm_rds_on(struct wl1273_device *radio)
 950 {
 951         struct wl1273_core *core = radio->core;
 952         int r;
 953
 954         dev_dbg(radio->dev, "%s\n", __func__);
 955         if (radio->rds_on)
 956                 return 0;
 957
 958         r = core->write(core, WL1273_POWER_SET,
 959                         WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 960         if (r)
 961                 goto out;
 962
 963         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 964         if (r)
 965                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 966 out:
 967         return r;
 968 }
 969
 970 static int wl1273_fm_rds_off(struct wl1273_device *radio)
 971 {
 972         struct wl1273_core *core = radio->core;
 973         int r;
 974
 975         if (!radio->rds_on)
 976                 return 0;
 977
 978         radio->irq_flags &= ~WL1273_RDS_EVENT;
 979
 980         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 981         if (r)
 982                 goto out;
 983
 984         /* Service pending read */
 985         wake_up_interruptible(&radio->read_queue);
 986
 987         dev_dbg(radio->dev, "%s\n", __func__);
 988
 989         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 990         if (r)
 991                 goto out;
 992
 993         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 994         if (r)
 995                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 996 out:
 997         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 998
 999         return r;
1000 }
1001
1002 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
1003 {
1004         int r = 0;
1005         struct wl1273_core *core = radio->core;
1006
1007         if (core->mode == WL1273_MODE_OFF ||
1008             core->mode == WL1273_MODE_SUSPENDED)
1009                 return -EPERM;
1010
1011         if (new_mode == WL1273_RDS_RESET) {
1012                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1013                 return r;
1014         }
1015
1016         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1017                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1018         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1019                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1020         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1021                 r = wl1273_fm_rds_off(radio);
1022         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1023                 r = wl1273_fm_rds_on(radio);
1024         } else {
1025                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1026                         __func__, new_mode);
1027                 r = -EINVAL;
1028         }
1029
1030         if (!r)
1031                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1032
1033         return r;
1034 }
1035
1036 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1037                                     size_t count, loff_t *ppos)
1038 {
1039         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1040         struct wl1273_core *core = radio->core;
1041         u16 val;
1042         int r;
1043
1044         dev_dbg(radio->dev, "%s\n", __func__);
1045
1046         if (core->mode != WL1273_MODE_TX)
1047                 return count;
1048
1049         if (radio->rds_users == 0) {
1050                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1051                 return 0;
1052         }
1053
1054         if (mutex_lock_interruptible(&core->lock))
1055                 return -EINTR;
1056         /*
1057          * Multiple processes can open the device, but only
1058          * one gets to write to it.
1059          */
1060         if (radio->owner && radio->owner != file) {
1061                 r = -EBUSY;
1062                 goto out;
1063         }
1064         radio->owner = file;
1065
1066         /* Manual Mode */
1067         if (count > 255)
1068                 val = 255;
1069         else
1070                 val = count;
1071
1072         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1073
1074         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1075                 r = -EFAULT;
1076                 goto out;
1077         }
1078
1079         dev_dbg(radio->dev, "Count: %d\n", val);
1080         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1081
1082         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1083         core->write_data(core, radio->write_buf, val + 1);
1084
1085         r = val;
1086 out:
1087         mutex_unlock(&core->lock);
1088
1089         return r;
1090 }
1091
1092 static unsigned int wl1273_fm_fops_poll(struct file *file,
1093                                         struct poll_table_struct *pts)
1094 {
1095         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1096         struct wl1273_core *core = radio->core;
1097
1098         if (radio->owner && radio->owner != file)
1099                 return -EBUSY;
1100
1101         radio->owner = file;
1102
1103         if (core->mode == WL1273_MODE_RX) {
1104                 poll_wait(file, &radio->read_queue, pts);
1105
1106                 if (radio->rd_index != radio->wr_index)
1107                         return POLLIN | POLLRDNORM;
1108
1109         } else if (core->mode == WL1273_MODE_TX) {
1110                 return POLLOUT | POLLWRNORM;
1111         }
1112
1113         return 0;
1114 }
1115
1116 static int wl1273_fm_fops_open(struct file *file)
1117 {
1118         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1119         struct wl1273_core *core = radio->core;
1120         int r = 0;
1121
1122         dev_dbg(radio->dev, "%s\n", __func__);
1123
1124         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1125             !radio->rds_users) {
1126                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1127
1128                 if (mutex_lock_interruptible(&core->lock))
1129                         return -EINTR;
1130
1131                 radio->irq_flags |= WL1273_RDS_EVENT;
1132
1133                 r = core->write(core, WL1273_INT_MASK_SET,
1134                                 radio->irq_flags);
1135                 if (r) {
1136                         mutex_unlock(&core->lock);
1137                         goto out;
1138                 }
1139
1140                 radio->rds_users++;
1141
1142                 mutex_unlock(&core->lock);
1143         }
1144 out:
1145         return r;
1146 }
1147
1148 static int wl1273_fm_fops_release(struct file *file)
1149 {
1150         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1151         struct wl1273_core *core = radio->core;
1152         int r = 0;
1153
1154         dev_dbg(radio->dev, "%s\n", __func__);
1155
1156         if (radio->rds_users > 0) {
1157                 radio->rds_users--;
1158                 if (radio->rds_users == 0) {
1159                         if (mutex_lock_interruptible(&core->lock))
1160                                 return -EINTR;
1161
1162                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1163
1164                         if (core->mode == WL1273_MODE_RX) {
1165                                 r = core->write(core,
1166                                                 WL1273_INT_MASK_SET,
1167                                                 radio->irq_flags);
1168                                 if (r) {
1169                                         mutex_unlock(&core->lock);
1170                                         goto out;
1171                                 }
1172                         }
1173                         mutex_unlock(&core->lock);
1174                 }
1175         }
1176
1177         if (file == radio->owner)
1178                 radio->owner = NULL;
1179 out:
1180         return r;
1181 }
1182
1183 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1184                                    size_t count, loff_t *ppos)
1185 {
1186         int r = 0;
1187         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1188         struct wl1273_core *core = radio->core;
1189         unsigned int block_count = 0;
1190         u16 val;
1191
1192         dev_dbg(radio->dev, "%s\n", __func__);
1193
1194         if (core->mode != WL1273_MODE_RX)
1195                 return 0;
1196
1197         if (radio->rds_users == 0) {
1198                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1199                 return 0;
1200         }
1201
1202         if (mutex_lock_interruptible(&core->lock))
1203                 return -EINTR;
1204
1205         /*
1206          * Multiple processes can open the device, but only
1207          * one at a time gets read access.
1208          */
1209         if (radio->owner && radio->owner != file) {
1210                 r = -EBUSY;
1211                 goto out;
1212         }
1213         radio->owner = file;
1214
1215         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1216         if (r) {
1217                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1218                 goto out;
1219         } else if (val == 0) {
1220                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1221                 r = -ENODATA;
1222                 goto out;
1223         }
1224
1225         /* block if no new data available */
1226         while (radio->wr_index == radio->rd_index) {
1227                 if (file->f_flags & O_NONBLOCK) {
1228                         r = -EWOULDBLOCK;
1229                         goto out;
1230                 }
1231
1232                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1233                 if (wait_event_interruptible(radio->read_queue,
1234                                              radio->wr_index !=
1235                                              radio->rd_index) < 0) {
1236                         r = -EINTR;
1237                         goto out;
1238                 }
1239         }
1240
1241         /* calculate block count from byte count */
1242         count /= RDS_BLOCK_SIZE;
1243
1244         /* copy RDS blocks from the internal buffer and to user buffer */
1245         while (block_count < count) {
1246                 if (radio->rd_index == radio->wr_index)
1247                         break;
1248
1249                 /* always transfer complete RDS blocks */
1250                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1251                                  RDS_BLOCK_SIZE))
1252                         break;
1253
1254                 /* increment and wrap the read pointer */
1255                 radio->rd_index += RDS_BLOCK_SIZE;
1256                 if (radio->rd_index >= radio->buf_size)
1257                         radio->rd_index = 0;
1258
1259                 /* increment counters */
1260                 block_count++;
1261                 buf += RDS_BLOCK_SIZE;
1262                 r += RDS_BLOCK_SIZE;
1263         }
1264
1265 out:
1266         dev_dbg(radio->dev, "%s: exit\n", __func__);
1267         mutex_unlock(&core->lock);
1268
1269         return r;
1270 }
1271
1272 static const struct v4l2_file_operations wl1273_fops = {
1273         .owner          = THIS_MODULE,
1274         .read           = wl1273_fm_fops_read,
1275         .write          = wl1273_fm_fops_write,
1276         .poll           = wl1273_fm_fops_poll,
1277         .unlocked_ioctl = video_ioctl2,
1278         .open           = wl1273_fm_fops_open,
1279         .release        = wl1273_fm_fops_release,
1280 };
1281
1282 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1283                                      struct v4l2_capability *capability)
1284 {
1285         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1286
1287         dev_dbg(radio->dev, "%s\n", __func__);
1288
1289         strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1290                 sizeof(capability->driver));
1291         strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1292                 sizeof(capability->card));
1293         strlcpy(capability->bus_info, radio->bus_type,
1294                 sizeof(capability->bus_info));
1295
1296         capability->device_caps = V4L2_CAP_HW_FREQ_SEEK |
1297                 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1298                 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1299                 V4L2_CAP_RDS_OUTPUT;
1300         capability->capabilities = capability->device_caps |
1301                 V4L2_CAP_DEVICE_CAPS;
1302
1303         return 0;
1304 }
1305
1306 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1307                                     unsigned int *i)
1308 {
1309         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1310
1311         dev_dbg(radio->dev, "%s\n", __func__);
1312
1313         *i = 0;
1314
1315         return 0;
1316 }
1317
1318 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1319                                     unsigned int i)
1320 {
1321         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1322
1323         dev_dbg(radio->dev, "%s\n", __func__);
1324
1325         if (i != 0)
1326                 return -EINVAL;
1327
1328         return 0;
1329 }
1330
1331 /**
1332  * wl1273_fm_set_tx_power() -   Set the transmission power value.
1333  * @core:                       A pointer to the device struct.
1334  * @power:                      The new power value.
1335  */
1336 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1337 {
1338         struct wl1273_core *core = radio->core;
1339         int r;
1340
1341         if (core->mode == WL1273_MODE_OFF ||
1342             core->mode == WL1273_MODE_SUSPENDED)
1343                 return -EPERM;
1344
1345         mutex_lock(&core->lock);
1346
1347         /* Convert the dBuV value to chip presentation */
1348         r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1349         if (r)
1350                 goto out;
1351
1352         radio->tx_power = power;
1353
1354 out:
1355         mutex_unlock(&core->lock);
1356         return r;
1357 }
1358
1359 #define WL1273_SPACING_50kHz    1
1360 #define WL1273_SPACING_100kHz   2
1361 #define WL1273_SPACING_200kHz   4
1362
1363 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1364                                     unsigned int spacing)
1365 {
1366         struct wl1273_core *core = radio->core;
1367         int r;
1368
1369         if (spacing == 0) {
1370                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1371                                 WL1273_SPACING_100kHz);
1372                 radio->spacing = 100;
1373         } else if (spacing - 50000 < 25000) {
1374                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1375                                 WL1273_SPACING_50kHz);
1376                 radio->spacing = 50;
1377         } else if (spacing - 100000 < 50000) {
1378                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1379                                 WL1273_SPACING_100kHz);
1380                 radio->spacing = 100;
1381         } else {
1382                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1383                                 WL1273_SPACING_200kHz);
1384                 radio->spacing = 200;
1385         }
1386
1387         return r;
1388 }
1389
1390 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1391 {
1392         struct wl1273_device *radio = ctrl->priv;
1393         struct wl1273_core *core = radio->core;
1394
1395         dev_dbg(radio->dev, "%s\n", __func__);
1396
1397         if (mutex_lock_interruptible(&core->lock))
1398                 return -EINTR;
1399
1400         switch (ctrl->id) {
1401         case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1402                 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1403                 break;
1404
1405         default:
1406                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1407                          __func__, ctrl->id);
1408                 break;
1409         }
1410
1411         mutex_unlock(&core->lock);
1412
1413         return 0;
1414 }
1415
1416 #define WL1273_MUTE_SOFT_ENABLE    (1 << 0)
1417 #define WL1273_MUTE_AC             (1 << 1)
1418 #define WL1273_MUTE_HARD_LEFT      (1 << 2)
1419 #define WL1273_MUTE_HARD_RIGHT     (1 << 3)
1420 #define WL1273_MUTE_SOFT_FORCE     (1 << 4)
1421
1422 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1423 {
1424         return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1425 }
1426
1427 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1428 {
1429         struct wl1273_device *radio = to_radio(ctrl);
1430         struct wl1273_core *core = radio->core;
1431         int r = 0;
1432
1433         dev_dbg(radio->dev, "%s\n", __func__);
1434
1435         switch (ctrl->id) {
1436         case V4L2_CID_AUDIO_MUTE:
1437                 if (mutex_lock_interruptible(&core->lock))
1438                         return -EINTR;
1439
1440                 if (core->mode == WL1273_MODE_RX && ctrl->val)
1441                         r = core->write(core,
1442                                         WL1273_MUTE_STATUS_SET,
1443                                         WL1273_MUTE_HARD_LEFT |
1444                                         WL1273_MUTE_HARD_RIGHT);
1445                 else if (core->mode == WL1273_MODE_RX)
1446                         r = core->write(core,
1447                                         WL1273_MUTE_STATUS_SET, 0x0);
1448                 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1449                         r = core->write(core, WL1273_MUTE, 1);
1450                 else if (core->mode == WL1273_MODE_TX)
1451                         r = core->write(core, WL1273_MUTE, 0);
1452
1453                 mutex_unlock(&core->lock);
1454                 break;
1455
1456         case V4L2_CID_AUDIO_VOLUME:
1457                 if (ctrl->val == 0)
1458                         r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1459                 else
1460                         r =  core->set_volume(core, core->volume);
1461                 break;
1462
1463         case V4L2_CID_TUNE_PREEMPHASIS:
1464                 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1465                 break;
1466
1467         case V4L2_CID_TUNE_POWER_LEVEL:
1468                 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1469                 break;
1470
1471         default:
1472                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1473                          __func__, ctrl->id);
1474                 break;
1475         }
1476
1477         dev_dbg(radio->dev, "%s\n", __func__);
1478         return r;
1479 }
1480
1481 static int wl1273_fm_vidioc_g_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 > 1)
1489                 return -EINVAL;
1490
1491         strlcpy(audio->name, "Radio", sizeof(audio->name));
1492         audio->capability = V4L2_AUDCAP_STEREO;
1493
1494         return 0;
1495 }
1496
1497 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1498                                     const struct v4l2_audio *audio)
1499 {
1500         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1501
1502         dev_dbg(radio->dev, "%s\n", __func__);
1503
1504         if (audio->index != 0)
1505                 return -EINVAL;
1506
1507         return 0;
1508 }
1509
1510 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1511 #define WL1273_RDS_SYNCHRONIZED 1
1512
1513 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1514                                     struct v4l2_tuner *tuner)
1515 {
1516         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1517         struct wl1273_core *core = radio->core;
1518         u16 val;
1519         int r;
1520
1521         dev_dbg(radio->dev, "%s\n", __func__);
1522
1523         if (tuner->index > 0)
1524                 return -EINVAL;
1525
1526         strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1527         tuner->type = V4L2_TUNER_RADIO;
1528
1529         tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1530         tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1531
1532         tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1533                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1534                 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1535
1536         if (radio->stereo)
1537                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1538         else
1539                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1540
1541         if (core->mode != WL1273_MODE_RX)
1542                 return 0;
1543
1544         if (mutex_lock_interruptible(&core->lock))
1545                 return -EINTR;
1546
1547         r = core->read(core, WL1273_STEREO_GET, &val);
1548         if (r)
1549                 goto out;
1550
1551         if (val == 1)
1552                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1553         else
1554                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1555
1556         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1557         if (r)
1558                 goto out;
1559
1560         tuner->signal = (s16) val;
1561         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1562
1563         tuner->afc = 0;
1564
1565         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1566         if (r)
1567                 goto out;
1568
1569         if (val == WL1273_RDS_SYNCHRONIZED)
1570                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1571 out:
1572         mutex_unlock(&core->lock);
1573
1574         return r;
1575 }
1576
1577 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1578                                     const struct v4l2_tuner *tuner)
1579 {
1580         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1581         struct wl1273_core *core = radio->core;
1582         int r = 0;
1583
1584         dev_dbg(radio->dev, "%s\n", __func__);
1585         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1586         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1587         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1588         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1589         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1590         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1591
1592         if (tuner->index > 0)
1593                 return -EINVAL;
1594
1595         if (mutex_lock_interruptible(&core->lock))
1596                 return -EINTR;
1597
1598         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1599         if (r)
1600                 goto out;
1601
1602         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1603                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1604         else
1605                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1606
1607         if (r)
1608                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1609
1610         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1611                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1612                 if (r < 0) {
1613                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1614                                  __func__, r);
1615                         goto out;
1616                 }
1617                 radio->stereo = false;
1618         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1619                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1620                 if (r < 0) {
1621                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1622                                  __func__, r);
1623                         goto out;
1624                 }
1625                 radio->stereo = true;
1626         } else {
1627                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1628                          __func__, tuner->audmode);
1629                 r = -EINVAL;
1630                 goto out;
1631         }
1632
1633 out:
1634         mutex_unlock(&core->lock);
1635
1636         return r;
1637 }
1638
1639 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1640                                         struct v4l2_frequency *freq)
1641 {
1642         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1643         struct wl1273_core *core = radio->core;
1644
1645         dev_dbg(radio->dev, "%s\n", __func__);
1646
1647         if (mutex_lock_interruptible(&core->lock))
1648                 return -EINTR;
1649
1650         freq->type = V4L2_TUNER_RADIO;
1651         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1652
1653         mutex_unlock(&core->lock);
1654
1655         return 0;
1656 }
1657
1658 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1659                                         const struct v4l2_frequency *freq)
1660 {
1661         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1662         struct wl1273_core *core = radio->core;
1663         int r;
1664
1665         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1666
1667         if (freq->type != V4L2_TUNER_RADIO) {
1668                 dev_dbg(radio->dev,
1669                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1670                 return -EINVAL;
1671         }
1672
1673         if (mutex_lock_interruptible(&core->lock))
1674                 return -EINTR;
1675
1676         if (core->mode == WL1273_MODE_RX) {
1677                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1678
1679                 r = wl1273_fm_set_rx_freq(radio,
1680                                           WL1273_INV_FREQ(freq->frequency));
1681                 if (r)
1682                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1683                                  ": set frequency failed with %d\n", r);
1684         } else {
1685                 r = wl1273_fm_set_tx_freq(radio,
1686                                           WL1273_INV_FREQ(freq->frequency));
1687                 if (r)
1688                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1689                                  ": set frequency failed with %d\n", r);
1690         }
1691
1692         mutex_unlock(&core->lock);
1693
1694         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1695         return r;
1696 }
1697
1698 #define WL1273_DEFAULT_SEEK_LEVEL       7
1699
1700 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1701                                            const struct v4l2_hw_freq_seek *seek)
1702 {
1703         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1704         struct wl1273_core *core = radio->core;
1705         int r;
1706
1707         dev_dbg(radio->dev, "%s\n", __func__);
1708
1709         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1710                 return -EINVAL;
1711
1712         if (file->f_flags & O_NONBLOCK)
1713                 return -EWOULDBLOCK;
1714
1715         if (mutex_lock_interruptible(&core->lock))
1716                 return -EINTR;
1717
1718         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1719         if (r)
1720                 goto out;
1721
1722         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1723         if (r)
1724                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1725
1726         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1727                                WL1273_DEFAULT_SEEK_LEVEL);
1728         if (r)
1729                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1730
1731 out:
1732         mutex_unlock(&core->lock);
1733         return r;
1734 }
1735
1736 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1737                                         const struct v4l2_modulator *modulator)
1738 {
1739         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1740         struct wl1273_core *core = radio->core;
1741         int r = 0;
1742
1743         dev_dbg(radio->dev, "%s\n", __func__);
1744
1745         if (modulator->index > 0)
1746                 return -EINVAL;
1747
1748         if (mutex_lock_interruptible(&core->lock))
1749                 return -EINTR;
1750
1751         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1752         if (r)
1753                 goto out;
1754
1755         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1756                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1757         else
1758                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1759
1760         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1761                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1762         else
1763                 r = core->write(core, WL1273_MONO_SET,
1764                                 WL1273_RX_STEREO);
1765         if (r < 0)
1766                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1767                          "MONO_SET fails: %d\n", r);
1768 out:
1769         mutex_unlock(&core->lock);
1770
1771         return r;
1772 }
1773
1774 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1775                                         struct v4l2_modulator *modulator)
1776 {
1777         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1778         struct wl1273_core *core = radio->core;
1779         u16 val;
1780         int r;
1781
1782         dev_dbg(radio->dev, "%s\n", __func__);
1783
1784         strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1785                 sizeof(modulator->name));
1786
1787         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1788         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1789
1790         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1791                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1792
1793         if (core->mode != WL1273_MODE_TX)
1794                 return 0;
1795
1796         if (mutex_lock_interruptible(&core->lock))
1797                 return -EINTR;
1798
1799         r = core->read(core, WL1273_MONO_SET, &val);
1800         if (r)
1801                 goto out;
1802
1803         if (val == WL1273_TX_STEREO)
1804                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1805         else
1806                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1807
1808         if (radio->rds_on)
1809                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1810 out:
1811         mutex_unlock(&core->lock);
1812
1813         return 0;
1814 }
1815
1816 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1817 {
1818         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1819         struct wl1273_core *core = radio->core;
1820         struct device *dev = radio->dev;
1821         u16 val;
1822         int r;
1823
1824         dev_info(dev, DRIVER_DESC);
1825
1826         if (core->mode == WL1273_MODE_OFF) {
1827                 dev_info(dev, "Mode: Off\n");
1828                 return 0;
1829         }
1830
1831         if (core->mode == WL1273_MODE_SUSPENDED) {
1832                 dev_info(dev, "Mode: Suspended\n");
1833                 return 0;
1834         }
1835
1836         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1837         if (r)
1838                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1839         else
1840                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1841
1842         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1843         if (r)
1844                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1845         else
1846                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1847
1848         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1849         if (r)
1850                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1851         else
1852                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1853
1854         r = core->read(core, WL1273_BAND_SET, &val);
1855         if (r)
1856                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1857         else
1858                 dev_info(dev, "BAND: %d\n", val);
1859
1860         if (core->mode == WL1273_MODE_TX) {
1861                 r = core->read(core, WL1273_PUPD_SET, &val);
1862                 if (r)
1863                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1864                 else
1865                         dev_info(dev, "PUPD: 0x%04x\n", val);
1866
1867                 r = core->read(core, WL1273_CHANL_SET, &val);
1868                 if (r)
1869                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1870                 else
1871                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1872         } else if (core->mode == WL1273_MODE_RX) {
1873                 int bf = radio->rangelow;
1874
1875                 r = core->read(core, WL1273_FREQ_SET, &val);
1876                 if (r)
1877                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1878                 else
1879                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1880
1881                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1882                 if (r)
1883                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1884                                 __func__);
1885                 else if (val == 0)
1886                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1887                 else if (val == 1)
1888                         dev_info(dev, "MOST_MODE: Force mono output\n");
1889                 else
1890                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1891
1892                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1893                 if (r)
1894                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1895                 else if (val == 0)
1896                         dev_info(dev,
1897                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1898                 else if (val == 1)
1899                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1900                 else
1901                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1902
1903                 r = core->read(core, WL1273_STEREO_GET, &val);
1904                 if (r)
1905                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1906                 else if (val == 0)
1907                         dev_info(dev, "STEREO: Not detected\n");
1908                 else if (val == 1)
1909                         dev_info(dev, "STEREO: Detected\n");
1910                 else
1911                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1912
1913                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1914                 if (r)
1915                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1916                 else
1917                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1918
1919                 r = core->read(core, WL1273_POWER_SET, &val);
1920                 if (r)
1921                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1922                 else
1923                         dev_info(dev, "POWER: 0x%04x\n", val);
1924
1925                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1926                 if (r)
1927                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1928                 else
1929                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1930
1931                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1932                 if (r)
1933                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1934                                 __func__);
1935                 else if (val == 0)
1936                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1937
1938                 else if (val == 1)
1939                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1940                 else
1941                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1942
1943                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1944                 if (r)
1945                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1946                                 __func__);
1947                 else
1948                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1949
1950                 r = core->read(core, WL1273_VOLUME_SET, &val);
1951                 if (r)
1952                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1953                 else
1954                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1955         }
1956
1957         return 0;
1958 }
1959
1960 static void wl1273_vdev_release(struct video_device *dev)
1961 {
1962 }
1963
1964 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1965         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1966         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1967 };
1968
1969 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1970         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1971         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1972         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1973         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1974         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1975         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1976         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1977         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1978         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1979         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1980         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1981         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1982         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1983 };
1984
1985 static struct video_device wl1273_viddev_template = {
1986         .fops                   = &wl1273_fops,
1987         .ioctl_ops              = &wl1273_ioctl_ops,
1988         .name                   = WL1273_FM_DRIVER_NAME,
1989         .release                = wl1273_vdev_release,
1990         .vfl_dir                = VFL_DIR_TX,
1991 };
1992
1993 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1994 {
1995         struct wl1273_device *radio = platform_get_drvdata(pdev);
1996         struct wl1273_core *core = radio->core;
1997
1998         dev_info(&pdev->dev, "%s.\n", __func__);
1999
2000         free_irq(core->client->irq, radio);
2001         core->pdata->free_resources();
2002
2003         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2004         video_unregister_device(&radio->videodev);
2005         v4l2_device_unregister(&radio->v4l2dev);
2006
2007         return 0;
2008 }
2009
2010 static int wl1273_fm_radio_probe(struct platform_device *pdev)
2011 {
2012         struct wl1273_core **core = pdev->dev.platform_data;
2013         struct wl1273_device *radio;
2014         struct v4l2_ctrl *ctrl;
2015         int r = 0;
2016
2017         pr_debug("%s\n", __func__);
2018
2019         if (!core) {
2020                 dev_err(&pdev->dev, "No platform data.\n");
2021                 r = -EINVAL;
2022                 goto pdata_err;
2023         }
2024
2025         radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2026         if (!radio) {
2027                 r = -ENOMEM;
2028                 goto pdata_err;
2029         }
2030
2031         /* RDS buffer allocation */
2032         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2033         radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2034         if (!radio->buffer) {
2035                 pr_err("Cannot allocate memory for RDS buffer.\n");
2036                 r = -ENOMEM;
2037                 goto pdata_err;
2038         }
2039
2040         radio->core = *core;
2041         radio->irq_flags = WL1273_IRQ_MASK;
2042         radio->dev = &radio->core->client->dev;
2043         radio->rds_on = false;
2044         radio->core->mode = WL1273_MODE_OFF;
2045         radio->tx_power = 118;
2046         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2047         radio->band = WL1273_BAND_OTHER;
2048         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2049         radio->core->channel_number = 2;
2050         radio->core->volume = WL1273_DEFAULT_VOLUME;
2051         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2052         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2053         radio->rangelow = WL1273_BAND_OTHER_LOW;
2054         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2055         radio->stereo = true;
2056         radio->bus_type = "I2C";
2057
2058         if (radio->core->pdata->request_resources) {
2059                 r = radio->core->pdata->request_resources(radio->core->client);
2060                 if (r) {
2061                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2062                                 ": Cannot get platform data\n");
2063                         goto pdata_err;
2064                 }
2065
2066                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2067
2068                 r = request_threaded_irq(radio->core->client->irq, NULL,
2069                                          wl1273_fm_irq_thread_handler,
2070                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2071                                          "wl1273-fm", radio);
2072                 if (r < 0) {
2073                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2074                                 ": Unable to register IRQ handler: %d\n", r);
2075                         goto err_request_irq;
2076                 }
2077         } else {
2078                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");
2079                 r = -EINVAL;
2080                 goto pdata_err;
2081         }
2082
2083         init_completion(&radio->busy);
2084         init_waitqueue_head(&radio->read_queue);
2085
2086         radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2087         if (!radio->write_buf) {
2088                 r = -ENOMEM;
2089                 goto write_buf_err;
2090         }
2091
2092         radio->dev = &pdev->dev;
2093         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2094         radio->rds_users = 0;
2095
2096         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2097         if (r) {
2098                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2099                 goto write_buf_err;
2100         }
2101
2102         /* V4L2 configuration */
2103         radio->videodev = wl1273_viddev_template;
2104
2105         radio->videodev.v4l2_dev = &radio->v4l2dev;
2106
2107         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2108
2109         /* add in ascending ID order */
2110         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2111                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2112                           WL1273_DEFAULT_VOLUME);
2113
2114         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2115                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2116
2117         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2118                                V4L2_CID_TUNE_PREEMPHASIS,
2119                                V4L2_PREEMPHASIS_75_uS, 0x03,
2120                                V4L2_PREEMPHASIS_50_uS);
2121
2122         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2123                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2124
2125         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2126                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2127                                  0, 255, 1, 255);
2128         if (ctrl)
2129                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2130
2131         if (radio->ctrl_handler.error) {
2132                 r = radio->ctrl_handler.error;
2133                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2134                 goto handler_init_err;
2135         }
2136
2137         video_set_drvdata(&radio->videodev, radio);
2138         platform_set_drvdata(pdev, radio);
2139
2140         /* register video device */
2141         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2142         if (r) {
2143                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2144                         ": Could not register video device\n");
2145                 goto handler_init_err;
2146         }
2147
2148         return 0;
2149
2150 handler_init_err:
2151         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2152         v4l2_device_unregister(&radio->v4l2dev);
2153 write_buf_err:
2154         free_irq(radio->core->client->irq, radio);
2155 err_request_irq:
2156         radio->core->pdata->free_resources();
2157 pdata_err:
2158         return r;
2159 }
2160
2161 static struct platform_driver wl1273_fm_radio_driver = {
2162         .probe          = wl1273_fm_radio_probe,
2163         .remove         = wl1273_fm_radio_remove,
2164         .driver         = {
2165                 .name   = "wl1273_fm_radio",
2166         },
2167 };
2168
2169 module_platform_driver(wl1273_fm_radio_driver);
2170
2171 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2172 MODULE_DESCRIPTION(DRIVER_DESC);
2173 MODULE_LICENSE("GPL");
2174 MODULE_ALIAS("platform:wl1273_fm_radio");