drivers/media/radio/radio-wl1273.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Driver for the Texas Instruments WL1273 FM radio.
   4  *
   5  * Copyright (C) 2011 Nokia Corporation
   6  * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
   7  */
   8
   9 #include <linux/delay.h>
  10 #include <linux/firmware.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/mfd/wl1273-core.h>
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <media/v4l2-common.h>
  16 #include <media/v4l2-ctrls.h>
  17 #include <media/v4l2-device.h>
  18 #include <media/v4l2-ioctl.h>
  19
  20 #define DRIVER_DESC "Wl1273 FM Radio"
  21
  22 #define WL1273_POWER_SET_OFF            0
  23 #define WL1273_POWER_SET_FM             BIT(0)
  24 #define WL1273_POWER_SET_RDS            BIT(1)
  25 #define WL1273_POWER_SET_RETENTION      BIT(4)
  26
  27 #define WL1273_PUPD_SET_OFF             0x00
  28 #define WL1273_PUPD_SET_ON              0x01
  29 #define WL1273_PUPD_SET_RETENTION       0x10
  30
  31 #define WL1273_FREQ(x)          (x * 10000 / 625)
  32 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  33
  34 /*
  35  * static int radio_nr - The number of the radio device
  36  *
  37  * The default is 0.
  38  */
  39 static int radio_nr;
  40 module_param(radio_nr, int, 0);
  41 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  42
  43 struct wl1273_device {
  44         char *bus_type;
  45
  46         u8 forbidden;
  47         unsigned int preemphasis;
  48         unsigned int spacing;
  49         unsigned int tx_power;
  50         unsigned int rx_frequency;
  51         unsigned int tx_frequency;
  52         unsigned int rangelow;
  53         unsigned int rangehigh;
  54         unsigned int band;
  55         bool stereo;
  56
  57         /* RDS */
  58         unsigned int rds_on;
  59
  60         wait_queue_head_t read_queue;
  61         struct mutex lock; /* for serializing fm radio operations */
  62         struct completion busy;
  63
  64         unsigned char *buffer;
  65         unsigned int buf_size;
  66         unsigned int rd_index;
  67         unsigned int wr_index;
  68
  69         /* Selected interrupts */
  70         u16 irq_flags;
  71         u16 irq_received;
  72
  73         struct v4l2_ctrl_handler ctrl_handler;
  74         struct v4l2_device v4l2dev;
  75         struct video_device videodev;
  76         struct device *dev;
  77         struct wl1273_core *core;
  78         struct file *owner;
  79         char *write_buf;
  80         unsigned int rds_users;
  81 };
  82
  83 #define WL1273_IRQ_MASK  (WL1273_FR_EVENT               |       \
  84                           WL1273_POW_ENB_EVENT)
  85
  86 /*
  87  * static unsigned int rds_buf - the number of RDS buffer blocks used.
  88  *
  89  * The default number is 100.
  90  */
  91 static unsigned int rds_buf = 100;
  92 module_param(rds_buf, uint, 0);
  93 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
  94
  95 static int wl1273_fm_write_fw(struct wl1273_core *core,
  96                               __u8 *fw, int len)
  97 {
  98         struct i2c_client *client = core->client;
  99         struct i2c_msg msg;
 100         int i, r = 0;
 101
 102         msg.addr = client->addr;
 103         msg.flags = 0;
 104
 105         for (i = 0; i <= len; i++) {
 106                 msg.len = fw[0];
 107                 msg.buf = fw + 1;
 108
 109                 fw += msg.len + 1;
 110                 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
 111
 112                 r = i2c_transfer(client->adapter, &msg, 1);
 113                 if (r < 0 && i < len + 1)
 114                         break;
 115         }
 116
 117         dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
 118         dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
 119
 120         /* Last transfer always fails. */
 121         if (i == len || r == 1)
 122                 r = 0;
 123
 124         return r;
 125 }
 126
 127 #define WL1273_FIFO_HAS_DATA(status)    (1 << 5 & status)
 128 #define WL1273_RDS_CORRECTABLE_ERROR    (1 << 3)
 129 #define WL1273_RDS_UNCORRECTABLE_ERROR  (1 << 4)
 130
 131 static int wl1273_fm_rds(struct wl1273_device *radio)
 132 {
 133         struct wl1273_core *core = radio->core;
 134         struct i2c_client *client = core->client;
 135         u16 val;
 136         u8 b0 = WL1273_RDS_DATA_GET, status;
 137         struct v4l2_rds_data rds = { 0, 0, 0 };
 138         struct i2c_msg msg[] = {
 139                 {
 140                         .addr = client->addr,
 141                         .flags = 0,
 142                         .buf = &b0,
 143                         .len = 1,
 144                 },
 145                 {
 146                         .addr = client->addr,
 147                         .flags = I2C_M_RD,
 148                         .buf = (u8 *) &rds,
 149                         .len = sizeof(rds),
 150                 }
 151         };
 152         int r;
 153
 154         if (core->mode != WL1273_MODE_RX)
 155                 return 0;
 156
 157         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
 158         if (r)
 159                 return r;
 160
 161         if ((val & 0x01) == 0) {
 162                 /* RDS decoder not synchronized */
 163                 return -EAGAIN;
 164         }
 165
 166         /* copy all four RDS blocks to internal buffer */
 167         do {
 168                 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
 169                 if (r != ARRAY_SIZE(msg)) {
 170                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
 171                                 ": %s: read_rds error r == %i)\n",
 172                                 __func__, r);
 173                 }
 174
 175                 status = rds.block;
 176
 177                 if (!WL1273_FIFO_HAS_DATA(status))
 178                         break;
 179
 180                 /* copy bits 0-2 (the block ID) to bits 3-5 */
 181                 rds.block = V4L2_RDS_BLOCK_MSK & status;
 182                 rds.block |= rds.block << 3;
 183
 184                 /* copy the error bits to standard positions */
 185                 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
 186                         rds.block |= V4L2_RDS_BLOCK_ERROR;
 187                         rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
 188                 } else if  (WL1273_RDS_CORRECTABLE_ERROR & status) {
 189                         rds.block &= ~V4L2_RDS_BLOCK_ERROR;
 190                         rds.block |= V4L2_RDS_BLOCK_CORRECTED;
 191                 }
 192
 193                 /* copy RDS block to internal buffer */
 194                 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
 195                 radio->wr_index += 3;
 196
 197                 /* wrap write pointer */
 198                 if (radio->wr_index >= radio->buf_size)
 199                         radio->wr_index = 0;
 200
 201                 /* check for overflow & start over */
 202                 if (radio->wr_index == radio->rd_index) {
 203                         dev_dbg(radio->dev, "RDS OVERFLOW");
 204
 205                         radio->rd_index = 0;
 206                         radio->wr_index = 0;
 207                         break;
 208                 }
 209         } while (WL1273_FIFO_HAS_DATA(status));
 210
 211         /* wake up read queue */
 212         if (radio->wr_index != radio->rd_index)
 213                 wake_up_interruptible(&radio->read_queue);
 214
 215         return 0;
 216 }
 217
 218 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
 219 {
 220         struct wl1273_device *radio = dev_id;
 221         struct wl1273_core *core = radio->core;
 222         u16 flags;
 223         int r;
 224
 225         r = core->read(core, WL1273_FLAG_GET, &flags);
 226         if (r)
 227                 goto out;
 228
 229         if (flags & WL1273_BL_EVENT) {
 230                 radio->irq_received = flags;
 231                 dev_dbg(radio->dev, "IRQ: BL\n");
 232         }
 233
 234         if (flags & WL1273_RDS_EVENT) {
 235                 msleep(200);
 236
 237                 wl1273_fm_rds(radio);
 238         }
 239
 240         if (flags & WL1273_BBLK_EVENT)
 241                 dev_dbg(radio->dev, "IRQ: BBLK\n");
 242
 243         if (flags & WL1273_LSYNC_EVENT)
 244                 dev_dbg(radio->dev, "IRQ: LSYNC\n");
 245
 246         if (flags & WL1273_LEV_EVENT) {
 247                 u16 level;
 248
 249                 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
 250                 if (r)
 251                         goto out;
 252
 253                 if (level > 14)
 254                         dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
 255         }
 256
 257         if (flags & WL1273_IFFR_EVENT)
 258                 dev_dbg(radio->dev, "IRQ: IFFR\n");
 259
 260         if (flags & WL1273_PI_EVENT)
 261                 dev_dbg(radio->dev, "IRQ: PI\n");
 262
 263         if (flags & WL1273_PD_EVENT)
 264                 dev_dbg(radio->dev, "IRQ: PD\n");
 265
 266         if (flags & WL1273_STIC_EVENT)
 267                 dev_dbg(radio->dev, "IRQ: STIC\n");
 268
 269         if (flags & WL1273_MAL_EVENT)
 270                 dev_dbg(radio->dev, "IRQ: MAL\n");
 271
 272         if (flags & WL1273_POW_ENB_EVENT) {
 273                 complete(&radio->busy);
 274                 dev_dbg(radio->dev, "NOT BUSY\n");
 275                 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
 276         }
 277
 278         if (flags & WL1273_SCAN_OVER_EVENT)
 279                 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
 280
 281         if (flags & WL1273_ERROR_EVENT)
 282                 dev_dbg(radio->dev, "IRQ: ERROR\n");
 283
 284         if (flags & WL1273_FR_EVENT) {
 285                 u16 freq;
 286
 287                 dev_dbg(radio->dev, "IRQ: FR:\n");
 288
 289                 if (core->mode == WL1273_MODE_RX) {
 290                         r = core->write(core, WL1273_TUNER_MODE_SET,
 291                                         TUNER_MODE_STOP_SEARCH);
 292                         if (r) {
 293                                 dev_err(radio->dev,
 294                                         "%s: TUNER_MODE_SET fails: %d\n",
 295                                         __func__, r);
 296                                 goto out;
 297                         }
 298
 299                         r = core->read(core, WL1273_FREQ_SET, &freq);
 300                         if (r)
 301                                 goto out;
 302
 303                         if (radio->band == WL1273_BAND_JAPAN)
 304                                 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
 305                                         freq * 50;
 306                         else
 307                                 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
 308                                         freq * 50;
 309                         /*
 310                          *  The driver works better with this msleep,
 311                          *  the documentation doesn't mention it.
 312                          */
 313                         usleep_range(10000, 15000);
 314
 315                         dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
 316
 317                 } else {
 318                         r = core->read(core, WL1273_CHANL_SET, &freq);
 319                         if (r)
 320                                 goto out;
 321
 322                         dev_dbg(radio->dev, "%dkHz\n", freq);
 323                 }
 324                 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
 325         }
 326
 327 out:
 328         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 329         complete(&radio->busy);
 330
 331         return IRQ_HANDLED;
 332 }
 333
 334 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 335 {
 336         struct wl1273_core *core = radio->core;
 337         int r = 0;
 338         unsigned long t;
 339
 340         if (freq < WL1273_BAND_TX_LOW) {
 341                 dev_err(radio->dev,
 342                         "Frequency out of range: %d < %d\n", freq,
 343                         WL1273_BAND_TX_LOW);
 344                 return -ERANGE;
 345         }
 346
 347         if (freq > WL1273_BAND_TX_HIGH) {
 348                 dev_err(radio->dev,
 349                         "Frequency out of range: %d > %d\n", freq,
 350                         WL1273_BAND_TX_HIGH);
 351                 return -ERANGE;
 352         }
 353
 354         /*
 355          *  The driver works better with this sleep,
 356          *  the documentation doesn't mention it.
 357          */
 358         usleep_range(5000, 10000);
 359
 360         dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 361
 362         /* Set the current tx channel */
 363         r = core->write(core, WL1273_CHANL_SET, freq / 10);
 364         if (r)
 365                 return r;
 366
 367         reinit_completion(&radio->busy);
 368
 369         /* wait for the FR IRQ */
 370         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 371         if (!t)
 372                 return -ETIMEDOUT;
 373
 374         dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
 375
 376         /* Enable the output power */
 377         r = core->write(core, WL1273_POWER_ENB_SET, 1);
 378         if (r)
 379                 return r;
 380
 381         reinit_completion(&radio->busy);
 382
 383         /* wait for the POWER_ENB IRQ */
 384         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 385         if (!t)
 386                 return -ETIMEDOUT;
 387
 388         radio->tx_frequency = freq;
 389         dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
 390
 391         return  0;
 392 }
 393
 394 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 395 {
 396         struct wl1273_core *core = radio->core;
 397         int r, f;
 398         unsigned long t;
 399
 400         if (freq < radio->rangelow) {
 401                 dev_err(radio->dev,
 402                         "Frequency out of range: %d < %d\n", freq,
 403                         radio->rangelow);
 404                 r = -ERANGE;
 405                 goto err;
 406         }
 407
 408         if (freq > radio->rangehigh) {
 409                 dev_err(radio->dev,
 410                         "Frequency out of range: %d > %d\n", freq,
 411                         radio->rangehigh);
 412                 r = -ERANGE;
 413                 goto err;
 414         }
 415
 416         dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 417
 418         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 419
 420         if (radio->band == WL1273_BAND_JAPAN)
 421                 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 422         else
 423                 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 424
 425         r = core->write(core, WL1273_FREQ_SET, f);
 426         if (r) {
 427                 dev_err(radio->dev, "FREQ_SET fails\n");
 428                 goto err;
 429         }
 430
 431         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 432         if (r) {
 433                 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 434                 goto err;
 435         }
 436
 437         reinit_completion(&radio->busy);
 438
 439         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 440         if (!t) {
 441                 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 442                 return -ETIMEDOUT;
 443         }
 444
 445         radio->rd_index = 0;
 446         radio->wr_index = 0;
 447         radio->rx_frequency = freq;
 448         return 0;
 449 err:
 450         return r;
 451 }
 452
 453 static int wl1273_fm_get_freq(struct wl1273_device *radio)
 454 {
 455         struct wl1273_core *core = radio->core;
 456         unsigned int freq;
 457         u16 f;
 458         int r;
 459
 460         if (core->mode == WL1273_MODE_RX) {
 461                 r = core->read(core, WL1273_FREQ_SET, &f);
 462                 if (r)
 463                         return r;
 464
 465                 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 466                 if (radio->band == WL1273_BAND_JAPAN)
 467                         freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 468                 else
 469                         freq = WL1273_BAND_OTHER_LOW + 50 * f;
 470         } else {
 471                 r = core->read(core, WL1273_CHANL_SET, &f);
 472                 if (r)
 473                         return r;
 474
 475                 freq = f * 10;
 476         }
 477
 478         return freq;
 479 }
 480
 481 /**
 482  * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 483  * @radio:                              A pointer to the device struct.
 484  *
 485  * The firmware file consists of arrays of bytes where the first byte
 486  * gives the array length. The first byte in the file gives the
 487  * number of these arrays.
 488  */
 489 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 490 {
 491         struct wl1273_core *core = radio->core;
 492         unsigned int packet_num;
 493         const struct firmware *fw_p;
 494         const char *fw_name = "radio-wl1273-fw.bin";
 495         struct device *dev = radio->dev;
 496         __u8 *ptr;
 497         int r;
 498
 499         dev_dbg(dev, "%s:\n", __func__);
 500
 501         /*
 502          * Uploading the firmware patch is not always necessary,
 503          * so we only print an info message.
 504          */
 505         if (request_firmware(&fw_p, fw_name, dev)) {
 506                 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 507
 508                 return 0;
 509         }
 510
 511         ptr = (__u8 *) fw_p->data;
 512         packet_num = ptr[0];
 513         dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 514
 515         r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 516         if (r) {
 517                 dev_err(dev, "FW upload error: %d\n", r);
 518                 goto out;
 519         }
 520
 521         /* ignore possible error here */
 522         core->write(core, WL1273_RESET, 0);
 523
 524         dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 525 out:
 526         release_firmware(fw_p);
 527         return r;
 528 }
 529
 530 static int wl1273_fm_stop(struct wl1273_device *radio)
 531 {
 532         struct wl1273_core *core = radio->core;
 533
 534         if (core->mode == WL1273_MODE_RX) {
 535                 int r = core->write(core, WL1273_POWER_SET,
 536                                     WL1273_POWER_SET_OFF);
 537                 if (r)
 538                         dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 539                                 __func__, r);
 540         } else if (core->mode == WL1273_MODE_TX) {
 541                 int r = core->write(core, WL1273_PUPD_SET,
 542                                     WL1273_PUPD_SET_OFF);
 543                 if (r)
 544                         dev_err(radio->dev,
 545                                 "%s: PUPD_SET fails: %d\n", __func__, r);
 546         }
 547
 548         if (core->pdata->disable) {
 549                 core->pdata->disable();
 550                 dev_dbg(radio->dev, "Back to reset\n");
 551         }
 552
 553         return 0;
 554 }
 555
 556 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 557 {
 558         struct wl1273_core *core = radio->core;
 559         struct wl1273_fm_platform_data *pdata = core->pdata;
 560         struct device *dev = radio->dev;
 561         int r = -EINVAL;
 562
 563         if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 564                 dev_dbg(radio->dev, "Out of reset\n");
 565
 566                 pdata->enable();
 567                 msleep(250);
 568         }
 569
 570         if (new_mode == WL1273_MODE_RX) {
 571                 u16 val = WL1273_POWER_SET_FM;
 572
 573                 if (radio->rds_on)
 574                         val |= WL1273_POWER_SET_RDS;
 575
 576                 /* If this fails try again */
 577                 r = core->write(core, WL1273_POWER_SET, val);
 578                 if (r) {
 579                         msleep(100);
 580
 581                         r = core->write(core, WL1273_POWER_SET, val);
 582                         if (r) {
 583                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 584                                 goto fail;
 585                         }
 586                 }
 587
 588                 /* rds buffer configuration */
 589                 radio->wr_index = 0;
 590                 radio->rd_index = 0;
 591
 592         } else if (new_mode == WL1273_MODE_TX) {
 593                 /* If this fails try again once */
 594                 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 595                 if (r) {
 596                         msleep(100);
 597                         r = core->write(core, WL1273_PUPD_SET,
 598                                         WL1273_PUPD_SET_ON);
 599                         if (r) {
 600                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 601                                 goto fail;
 602                         }
 603                 }
 604
 605                 if (radio->rds_on) {
 606                         r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 607                         if (r) {
 608                                 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
 609                                         __func__);
 610                                 goto fail;
 611                         }
 612                 } else {
 613                         r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 614                         if (r) {
 615                                 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
 616                                         __func__);
 617                                 goto fail;
 618                         }
 619                 }
 620         } else {
 621                 dev_warn(dev, "%s: Illegal mode.\n", __func__);
 622         }
 623
 624         if (core->mode == WL1273_MODE_OFF) {
 625                 r = wl1273_fm_upload_firmware_patch(radio);
 626                 if (r)
 627                         dev_warn(dev, "Firmware upload failed.\n");
 628
 629                 /*
 630                  * Sometimes the chip is in a wrong power state at this point.
 631                  * So we set the power once again.
 632                  */
 633                 if (new_mode == WL1273_MODE_RX) {
 634                         u16 val = WL1273_POWER_SET_FM;
 635
 636                         if (radio->rds_on)
 637                                 val |= WL1273_POWER_SET_RDS;
 638
 639                         r = core->write(core, WL1273_POWER_SET, val);
 640                         if (r) {
 641                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 642                                 goto fail;
 643                         }
 644                 } else if (new_mode == WL1273_MODE_TX) {
 645                         r = core->write(core, WL1273_PUPD_SET,
 646                                         WL1273_PUPD_SET_ON);
 647                         if (r) {
 648                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 649                                 goto fail;
 650                         }
 651                 }
 652         }
 653
 654         return 0;
 655 fail:
 656         if (pdata->disable)
 657                 pdata->disable();
 658
 659         dev_dbg(dev, "%s: return: %d\n", __func__, r);
 660         return r;
 661 }
 662
 663 static int wl1273_fm_suspend(struct wl1273_device *radio)
 664 {
 665         struct wl1273_core *core = radio->core;
 666         int r;
 667
 668         /* Cannot go from OFF to SUSPENDED */
 669         if (core->mode == WL1273_MODE_RX)
 670                 r = core->write(core, WL1273_POWER_SET,
 671                                 WL1273_POWER_SET_RETENTION);
 672         else if (core->mode == WL1273_MODE_TX)
 673                 r = core->write(core, WL1273_PUPD_SET,
 674                                 WL1273_PUPD_SET_RETENTION);
 675         else
 676                 r = -EINVAL;
 677
 678         if (r) {
 679                 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 680                 goto out;
 681         }
 682
 683 out:
 684         return r;
 685 }
 686
 687 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 688 {
 689         struct wl1273_core *core = radio->core;
 690         struct device *dev = radio->dev;
 691         int old_mode;
 692         int r;
 693
 694         dev_dbg(dev, "%s\n", __func__);
 695         dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 696
 697         old_mode = core->mode;
 698         if (mode & radio->forbidden) {
 699                 r = -EPERM;
 700                 goto out;
 701         }
 702
 703         switch (mode) {
 704         case WL1273_MODE_RX:
 705         case WL1273_MODE_TX:
 706                 r = wl1273_fm_start(radio, mode);
 707                 if (r) {
 708                         dev_err(dev, "%s: Cannot start.\n", __func__);
 709                         wl1273_fm_stop(radio);
 710                         goto out;
 711                 }
 712
 713                 core->mode = mode;
 714                 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 715                 if (r) {
 716                         dev_err(dev, "INT_MASK_SET fails.\n");
 717                         goto out;
 718                 }
 719
 720                 /* remember previous settings */
 721                 if (mode == WL1273_MODE_RX) {
 722                         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 723                         if (r) {
 724                                 dev_err(dev, "set freq fails: %d.\n", r);
 725                                 goto out;
 726                         }
 727
 728                         r = core->set_volume(core, core->volume);
 729                         if (r) {
 730                                 dev_err(dev, "set volume fails: %d.\n", r);
 731                                 goto out;
 732                         }
 733
 734                         dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 735                                 core->volume);
 736                 } else {
 737                         r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 738                         if (r) {
 739                                 dev_err(dev, "set freq fails: %d.\n", r);
 740                                 goto out;
 741                         }
 742                 }
 743
 744                 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 745
 746                 r = core->set_audio(core, core->audio_mode);
 747                 if (r)
 748                         dev_err(dev, "Cannot set audio mode.\n");
 749                 break;
 750
 751         case WL1273_MODE_OFF:
 752                 r = wl1273_fm_stop(radio);
 753                 if (r)
 754                         dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 755                 else
 756                         core->mode = WL1273_MODE_OFF;
 757
 758                 break;
 759
 760         case WL1273_MODE_SUSPENDED:
 761                 r = wl1273_fm_suspend(radio);
 762                 if (r)
 763                         dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 764                 else
 765                         core->mode = WL1273_MODE_SUSPENDED;
 766
 767                 break;
 768
 769         default:
 770                 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 771                 r = -EINVAL;
 772                 break;
 773         }
 774 out:
 775         if (r)
 776                 core->mode = old_mode;
 777
 778         return r;
 779 }
 780
 781 static int wl1273_fm_set_seek(struct wl1273_device *radio,
 782                               unsigned int wrap_around,
 783                               unsigned int seek_upward,
 784                               int level)
 785 {
 786         struct wl1273_core *core = radio->core;
 787         int r = 0;
 788         unsigned int dir = (seek_upward == 0) ? 0 : 1;
 789         unsigned int f;
 790
 791         f = radio->rx_frequency;
 792         dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 793
 794         if (dir && f + radio->spacing <= radio->rangehigh)
 795                 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 796         else if (dir && wrap_around)
 797                 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 798         else if (f - radio->spacing >= radio->rangelow)
 799                 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 800         else if (wrap_around)
 801                 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 802
 803         if (r)
 804                 goto out;
 805
 806         if (level < SCHAR_MIN || level > SCHAR_MAX)
 807                 return -EINVAL;
 808
 809         reinit_completion(&radio->busy);
 810         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 811
 812         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 813         if (r)
 814                 goto out;
 815
 816         dev_dbg(radio->dev, "%s\n", __func__);
 817
 818         r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 819         if (r)
 820                 goto out;
 821
 822         r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 823         if (r)
 824                 goto out;
 825
 826         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 827         if (r)
 828                 goto out;
 829
 830         /* wait for the FR IRQ */
 831         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 832         if (!(radio->irq_received & WL1273_BL_EVENT)) {
 833                 r = -ETIMEDOUT;
 834                 goto out;
 835         }
 836
 837         radio->irq_received &= ~WL1273_BL_EVENT;
 838
 839         if (!wrap_around)
 840                 goto out;
 841
 842         /* Wrap around */
 843         dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 844
 845         if (seek_upward)
 846                 f = radio->rangelow;
 847         else
 848                 f = radio->rangehigh;
 849
 850         r = wl1273_fm_set_rx_freq(radio, f);
 851         if (r)
 852                 goto out;
 853
 854         reinit_completion(&radio->busy);
 855         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 856
 857         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 858         if (r)
 859                 goto out;
 860
 861         /* wait for the FR IRQ */
 862         if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
 863                 r = -ETIMEDOUT;
 864 out:
 865         dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 866         return r;
 867 }
 868
 869 /**
 870  * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 871  * @radio:                      A pointer to the device struct.
 872  */
 873 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 874 {
 875         struct wl1273_core *core = radio->core;
 876         struct device *dev = radio->dev;
 877         u16 val;
 878         int r;
 879
 880         if (core->mode == WL1273_MODE_OFF ||
 881             core->mode == WL1273_MODE_SUSPENDED)
 882                 return -EPERM;
 883
 884         r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 885         if (r) {
 886                 dev_err(dev, "%s: read error: %d\n", __func__, r);
 887                 goto out;
 888         }
 889
 890 out:
 891         return val;
 892 }
 893
 894 /**
 895  * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 896  * @radio:                       A pointer to the device struct.
 897  * @preemphasis:                 The new pre-amphasis value.
 898  *
 899  * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 900  * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 901  */
 902 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 903                                      unsigned int preemphasis)
 904 {
 905         struct wl1273_core *core = radio->core;
 906         int r;
 907         u16 em;
 908
 909         if (core->mode == WL1273_MODE_OFF ||
 910             core->mode == WL1273_MODE_SUSPENDED)
 911                 return -EPERM;
 912
 913         mutex_lock(&core->lock);
 914
 915         switch (preemphasis) {
 916         case V4L2_PREEMPHASIS_DISABLED:
 917                 em = 1;
 918                 break;
 919         case V4L2_PREEMPHASIS_50_uS:
 920                 em = 0;
 921                 break;
 922         case V4L2_PREEMPHASIS_75_uS:
 923                 em = 2;
 924                 break;
 925         default:
 926                 r = -EINVAL;
 927                 goto out;
 928         }
 929
 930         r = core->write(core, WL1273_PREMPH_SET, em);
 931         if (r)
 932                 goto out;
 933
 934         radio->preemphasis = preemphasis;
 935
 936 out:
 937         mutex_unlock(&core->lock);
 938         return r;
 939 }
 940
 941 static int wl1273_fm_rds_on(struct wl1273_device *radio)
 942 {
 943         struct wl1273_core *core = radio->core;
 944         int r;
 945
 946         dev_dbg(radio->dev, "%s\n", __func__);
 947         if (radio->rds_on)
 948                 return 0;
 949
 950         r = core->write(core, WL1273_POWER_SET,
 951                         WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 952         if (r)
 953                 goto out;
 954
 955         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 956         if (r)
 957                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 958 out:
 959         return r;
 960 }
 961
 962 static int wl1273_fm_rds_off(struct wl1273_device *radio)
 963 {
 964         struct wl1273_core *core = radio->core;
 965         int r;
 966
 967         if (!radio->rds_on)
 968                 return 0;
 969
 970         radio->irq_flags &= ~WL1273_RDS_EVENT;
 971
 972         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 973         if (r)
 974                 goto out;
 975
 976         /* Service pending read */
 977         wake_up_interruptible(&radio->read_queue);
 978
 979         dev_dbg(radio->dev, "%s\n", __func__);
 980
 981         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 982         if (r)
 983                 goto out;
 984
 985         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 986         if (r)
 987                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 988 out:
 989         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 990
 991         return r;
 992 }
 993
 994 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
 995 {
 996         int r = 0;
 997         struct wl1273_core *core = radio->core;
 998
 999         if (core->mode == WL1273_MODE_OFF ||
1000             core->mode == WL1273_MODE_SUSPENDED)
1001                 return -EPERM;
1002
1003         if (new_mode == WL1273_RDS_RESET) {
1004                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1005                 return r;
1006         }
1007
1008         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1009                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1010         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1011                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1012         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1013                 r = wl1273_fm_rds_off(radio);
1014         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1015                 r = wl1273_fm_rds_on(radio);
1016         } else {
1017                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1018                         __func__, new_mode);
1019                 r = -EINVAL;
1020         }
1021
1022         if (!r)
1023                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1024
1025         return r;
1026 }
1027
1028 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1029                                     size_t count, loff_t *ppos)
1030 {
1031         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1032         struct wl1273_core *core = radio->core;
1033         u16 val;
1034         int r;
1035
1036         dev_dbg(radio->dev, "%s\n", __func__);
1037
1038         if (core->mode != WL1273_MODE_TX)
1039                 return count;
1040
1041         if (radio->rds_users == 0) {
1042                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1043                 return 0;
1044         }
1045
1046         if (mutex_lock_interruptible(&core->lock))
1047                 return -EINTR;
1048         /*
1049          * Multiple processes can open the device, but only
1050          * one gets to write to it.
1051          */
1052         if (radio->owner && radio->owner != file) {
1053                 r = -EBUSY;
1054                 goto out;
1055         }
1056         radio->owner = file;
1057
1058         /* Manual Mode */
1059         if (count > 255)
1060                 val = 255;
1061         else
1062                 val = count;
1063
1064         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1065
1066         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1067                 r = -EFAULT;
1068                 goto out;
1069         }
1070
1071         dev_dbg(radio->dev, "Count: %d\n", val);
1072         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1073
1074         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1075         core->write_data(core, radio->write_buf, val + 1);
1076
1077         r = val;
1078 out:
1079         mutex_unlock(&core->lock);
1080
1081         return r;
1082 }
1083
1084 static __poll_t wl1273_fm_fops_poll(struct file *file,
1085                                         struct poll_table_struct *pts)
1086 {
1087         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1088         struct wl1273_core *core = radio->core;
1089
1090         if (radio->owner && radio->owner != file)
1091                 return EPOLLERR;
1092
1093         radio->owner = file;
1094
1095         if (core->mode == WL1273_MODE_RX) {
1096                 poll_wait(file, &radio->read_queue, pts);
1097
1098                 if (radio->rd_index != radio->wr_index)
1099                         return EPOLLIN | EPOLLRDNORM;
1100
1101         } else if (core->mode == WL1273_MODE_TX) {
1102                 return EPOLLOUT | EPOLLWRNORM;
1103         }
1104
1105         return 0;
1106 }
1107
1108 static int wl1273_fm_fops_open(struct file *file)
1109 {
1110         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1111         struct wl1273_core *core = radio->core;
1112         int r = 0;
1113
1114         dev_dbg(radio->dev, "%s\n", __func__);
1115
1116         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1117             !radio->rds_users) {
1118                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1119
1120                 if (mutex_lock_interruptible(&core->lock))
1121                         return -EINTR;
1122
1123                 radio->irq_flags |= WL1273_RDS_EVENT;
1124
1125                 r = core->write(core, WL1273_INT_MASK_SET,
1126                                 radio->irq_flags);
1127                 if (r) {
1128                         mutex_unlock(&core->lock);
1129                         goto out;
1130                 }
1131
1132                 radio->rds_users++;
1133
1134                 mutex_unlock(&core->lock);
1135         }
1136 out:
1137         return r;
1138 }
1139
1140 static int wl1273_fm_fops_release(struct file *file)
1141 {
1142         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1143         struct wl1273_core *core = radio->core;
1144         int r = 0;
1145
1146         dev_dbg(radio->dev, "%s\n", __func__);
1147
1148         if (radio->rds_users > 0) {
1149                 radio->rds_users--;
1150                 if (radio->rds_users == 0) {
1151                         if (mutex_lock_interruptible(&core->lock))
1152                                 return -EINTR;
1153
1154                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1155
1156                         if (core->mode == WL1273_MODE_RX) {
1157                                 r = core->write(core,
1158                                                 WL1273_INT_MASK_SET,
1159                                                 radio->irq_flags);
1160                                 if (r) {
1161                                         mutex_unlock(&core->lock);
1162                                         goto out;
1163                                 }
1164                         }
1165                         mutex_unlock(&core->lock);
1166                 }
1167         }
1168
1169         if (file == radio->owner)
1170                 radio->owner = NULL;
1171 out:
1172         return r;
1173 }
1174
1175 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1176                                    size_t count, loff_t *ppos)
1177 {
1178         int r = 0;
1179         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1180         struct wl1273_core *core = radio->core;
1181         unsigned int block_count = 0;
1182         u16 val;
1183
1184         dev_dbg(radio->dev, "%s\n", __func__);
1185
1186         if (core->mode != WL1273_MODE_RX)
1187                 return 0;
1188
1189         if (radio->rds_users == 0) {
1190                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1191                 return 0;
1192         }
1193
1194         if (mutex_lock_interruptible(&core->lock))
1195                 return -EINTR;
1196
1197         /*
1198          * Multiple processes can open the device, but only
1199          * one at a time gets read access.
1200          */
1201         if (radio->owner && radio->owner != file) {
1202                 r = -EBUSY;
1203                 goto out;
1204         }
1205         radio->owner = file;
1206
1207         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1208         if (r) {
1209                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1210                 goto out;
1211         } else if (val == 0) {
1212                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1213                 r = -ENODATA;
1214                 goto out;
1215         }
1216
1217         /* block if no new data available */
1218         while (radio->wr_index == radio->rd_index) {
1219                 if (file->f_flags & O_NONBLOCK) {
1220                         r = -EWOULDBLOCK;
1221                         goto out;
1222                 }
1223
1224                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1225                 if (wait_event_interruptible(radio->read_queue,
1226                                              radio->wr_index !=
1227                                              radio->rd_index) < 0) {
1228                         r = -EINTR;
1229                         goto out;
1230                 }
1231         }
1232
1233         /* calculate block count from byte count */
1234         count /= RDS_BLOCK_SIZE;
1235
1236         /* copy RDS blocks from the internal buffer and to user buffer */
1237         while (block_count < count) {
1238                 if (radio->rd_index == radio->wr_index)
1239                         break;
1240
1241                 /* always transfer complete RDS blocks */
1242                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1243                                  RDS_BLOCK_SIZE))
1244                         break;
1245
1246                 /* increment and wrap the read pointer */
1247                 radio->rd_index += RDS_BLOCK_SIZE;
1248                 if (radio->rd_index >= radio->buf_size)
1249                         radio->rd_index = 0;
1250
1251                 /* increment counters */
1252                 block_count++;
1253                 buf += RDS_BLOCK_SIZE;
1254                 r += RDS_BLOCK_SIZE;
1255         }
1256
1257 out:
1258         dev_dbg(radio->dev, "%s: exit\n", __func__);
1259         mutex_unlock(&core->lock);
1260
1261         return r;
1262 }
1263
1264 static const struct v4l2_file_operations wl1273_fops = {
1265         .owner          = THIS_MODULE,
1266         .read           = wl1273_fm_fops_read,
1267         .write          = wl1273_fm_fops_write,
1268         .poll           = wl1273_fm_fops_poll,
1269         .unlocked_ioctl = video_ioctl2,
1270         .open           = wl1273_fm_fops_open,
1271         .release        = wl1273_fm_fops_release,
1272 };
1273
1274 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1275                                      struct v4l2_capability *capability)
1276 {
1277         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1278
1279         dev_dbg(radio->dev, "%s\n", __func__);
1280
1281         strscpy(capability->driver, WL1273_FM_DRIVER_NAME,
1282                 sizeof(capability->driver));
1283         strscpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1284                 sizeof(capability->card));
1285         strscpy(capability->bus_info, radio->bus_type,
1286                 sizeof(capability->bus_info));
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  * @radio:                      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         strscpy(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                                     const 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         strscpy(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                 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1519
1520         if (radio->stereo)
1521                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1522         else
1523                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1524
1525         if (core->mode != WL1273_MODE_RX)
1526                 return 0;
1527
1528         if (mutex_lock_interruptible(&core->lock))
1529                 return -EINTR;
1530
1531         r = core->read(core, WL1273_STEREO_GET, &val);
1532         if (r)
1533                 goto out;
1534
1535         if (val == 1)
1536                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1537         else
1538                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1539
1540         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1541         if (r)
1542                 goto out;
1543
1544         tuner->signal = (s16) val;
1545         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1546
1547         tuner->afc = 0;
1548
1549         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1550         if (r)
1551                 goto out;
1552
1553         if (val == WL1273_RDS_SYNCHRONIZED)
1554                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1555 out:
1556         mutex_unlock(&core->lock);
1557
1558         return r;
1559 }
1560
1561 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1562                                     const struct v4l2_tuner *tuner)
1563 {
1564         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1565         struct wl1273_core *core = radio->core;
1566         int r = 0;
1567
1568         dev_dbg(radio->dev, "%s\n", __func__);
1569         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1570         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1571         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1572         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1573         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1574         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1575
1576         if (tuner->index > 0)
1577                 return -EINVAL;
1578
1579         if (mutex_lock_interruptible(&core->lock))
1580                 return -EINTR;
1581
1582         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1583         if (r)
1584                 goto out;
1585
1586         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1587                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1588         else
1589                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1590
1591         if (r)
1592                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1593
1594         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1595                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1596                 if (r < 0) {
1597                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1598                                  __func__, r);
1599                         goto out;
1600                 }
1601                 radio->stereo = false;
1602         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1603                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1604                 if (r < 0) {
1605                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1606                                  __func__, r);
1607                         goto out;
1608                 }
1609                 radio->stereo = true;
1610         } else {
1611                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1612                          __func__, tuner->audmode);
1613                 r = -EINVAL;
1614                 goto out;
1615         }
1616
1617 out:
1618         mutex_unlock(&core->lock);
1619
1620         return r;
1621 }
1622
1623 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1624                                         struct v4l2_frequency *freq)
1625 {
1626         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1627         struct wl1273_core *core = radio->core;
1628
1629         dev_dbg(radio->dev, "%s\n", __func__);
1630
1631         if (mutex_lock_interruptible(&core->lock))
1632                 return -EINTR;
1633
1634         freq->type = V4L2_TUNER_RADIO;
1635         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1636
1637         mutex_unlock(&core->lock);
1638
1639         return 0;
1640 }
1641
1642 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1643                                         const struct v4l2_frequency *freq)
1644 {
1645         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1646         struct wl1273_core *core = radio->core;
1647         int r;
1648
1649         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1650
1651         if (freq->type != V4L2_TUNER_RADIO) {
1652                 dev_dbg(radio->dev,
1653                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1654                 return -EINVAL;
1655         }
1656
1657         if (mutex_lock_interruptible(&core->lock))
1658                 return -EINTR;
1659
1660         if (core->mode == WL1273_MODE_RX) {
1661                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1662
1663                 r = wl1273_fm_set_rx_freq(radio,
1664                                           WL1273_INV_FREQ(freq->frequency));
1665                 if (r)
1666                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1667                                  ": set frequency failed with %d\n", r);
1668         } else {
1669                 r = wl1273_fm_set_tx_freq(radio,
1670                                           WL1273_INV_FREQ(freq->frequency));
1671                 if (r)
1672                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1673                                  ": set frequency failed with %d\n", r);
1674         }
1675
1676         mutex_unlock(&core->lock);
1677
1678         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1679         return r;
1680 }
1681
1682 #define WL1273_DEFAULT_SEEK_LEVEL       7
1683
1684 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1685                                            const struct v4l2_hw_freq_seek *seek)
1686 {
1687         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1688         struct wl1273_core *core = radio->core;
1689         int r;
1690
1691         dev_dbg(radio->dev, "%s\n", __func__);
1692
1693         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1694                 return -EINVAL;
1695
1696         if (file->f_flags & O_NONBLOCK)
1697                 return -EWOULDBLOCK;
1698
1699         if (mutex_lock_interruptible(&core->lock))
1700                 return -EINTR;
1701
1702         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1703         if (r)
1704                 goto out;
1705
1706         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1707         if (r)
1708                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1709
1710         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1711                                WL1273_DEFAULT_SEEK_LEVEL);
1712         if (r)
1713                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1714
1715 out:
1716         mutex_unlock(&core->lock);
1717         return r;
1718 }
1719
1720 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1721                                         const struct v4l2_modulator *modulator)
1722 {
1723         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1724         struct wl1273_core *core = radio->core;
1725         int r = 0;
1726
1727         dev_dbg(radio->dev, "%s\n", __func__);
1728
1729         if (modulator->index > 0)
1730                 return -EINVAL;
1731
1732         if (mutex_lock_interruptible(&core->lock))
1733                 return -EINTR;
1734
1735         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1736         if (r)
1737                 goto out;
1738
1739         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1740                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1741         else
1742                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1743
1744         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1745                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1746         else
1747                 r = core->write(core, WL1273_MONO_SET,
1748                                 WL1273_RX_STEREO);
1749         if (r < 0)
1750                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1751                          "MONO_SET fails: %d\n", r);
1752 out:
1753         mutex_unlock(&core->lock);
1754
1755         return r;
1756 }
1757
1758 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1759                                         struct v4l2_modulator *modulator)
1760 {
1761         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1762         struct wl1273_core *core = radio->core;
1763         u16 val;
1764         int r;
1765
1766         dev_dbg(radio->dev, "%s\n", __func__);
1767
1768         strscpy(modulator->name, WL1273_FM_DRIVER_NAME,
1769                 sizeof(modulator->name));
1770
1771         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1772         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1773
1774         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1775                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1776
1777         if (core->mode != WL1273_MODE_TX)
1778                 return 0;
1779
1780         if (mutex_lock_interruptible(&core->lock))
1781                 return -EINTR;
1782
1783         r = core->read(core, WL1273_MONO_SET, &val);
1784         if (r)
1785                 goto out;
1786
1787         if (val == WL1273_TX_STEREO)
1788                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1789         else
1790                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1791
1792         if (radio->rds_on)
1793                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1794 out:
1795         mutex_unlock(&core->lock);
1796
1797         return 0;
1798 }
1799
1800 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1801 {
1802         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1803         struct wl1273_core *core = radio->core;
1804         struct device *dev = radio->dev;
1805         u16 val;
1806         int r;
1807
1808         dev_info(dev, DRIVER_DESC);
1809
1810         if (core->mode == WL1273_MODE_OFF) {
1811                 dev_info(dev, "Mode: Off\n");
1812                 return 0;
1813         }
1814
1815         if (core->mode == WL1273_MODE_SUSPENDED) {
1816                 dev_info(dev, "Mode: Suspended\n");
1817                 return 0;
1818         }
1819
1820         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1821         if (r)
1822                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1823         else
1824                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1825
1826         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1827         if (r)
1828                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1829         else
1830                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1831
1832         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1833         if (r)
1834                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1835         else
1836                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1837
1838         r = core->read(core, WL1273_BAND_SET, &val);
1839         if (r)
1840                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1841         else
1842                 dev_info(dev, "BAND: %d\n", val);
1843
1844         if (core->mode == WL1273_MODE_TX) {
1845                 r = core->read(core, WL1273_PUPD_SET, &val);
1846                 if (r)
1847                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1848                 else
1849                         dev_info(dev, "PUPD: 0x%04x\n", val);
1850
1851                 r = core->read(core, WL1273_CHANL_SET, &val);
1852                 if (r)
1853                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1854                 else
1855                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1856         } else if (core->mode == WL1273_MODE_RX) {
1857                 int bf = radio->rangelow;
1858
1859                 r = core->read(core, WL1273_FREQ_SET, &val);
1860                 if (r)
1861                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1862                 else
1863                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1864
1865                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1866                 if (r)
1867                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1868                                 __func__);
1869                 else if (val == 0)
1870                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1871                 else if (val == 1)
1872                         dev_info(dev, "MOST_MODE: Force mono output\n");
1873                 else
1874                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1875
1876                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1877                 if (r)
1878                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1879                 else if (val == 0)
1880                         dev_info(dev,
1881                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1882                 else if (val == 1)
1883                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1884                 else
1885                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1886
1887                 r = core->read(core, WL1273_STEREO_GET, &val);
1888                 if (r)
1889                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1890                 else if (val == 0)
1891                         dev_info(dev, "STEREO: Not detected\n");
1892                 else if (val == 1)
1893                         dev_info(dev, "STEREO: Detected\n");
1894                 else
1895                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1896
1897                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1898                 if (r)
1899                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1900                 else
1901                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1902
1903                 r = core->read(core, WL1273_POWER_SET, &val);
1904                 if (r)
1905                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1906                 else
1907                         dev_info(dev, "POWER: 0x%04x\n", val);
1908
1909                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1910                 if (r)
1911                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1912                 else
1913                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1914
1915                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1916                 if (r)
1917                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1918                                 __func__);
1919                 else if (val == 0)
1920                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1921
1922                 else if (val == 1)
1923                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1924                 else
1925                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1926
1927                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1928                 if (r)
1929                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1930                                 __func__);
1931                 else
1932                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1933
1934                 r = core->read(core, WL1273_VOLUME_SET, &val);
1935                 if (r)
1936                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1937                 else
1938                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1939         }
1940
1941         return 0;
1942 }
1943
1944 static void wl1273_vdev_release(struct video_device *dev)
1945 {
1946 }
1947
1948 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1949         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1950         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1951 };
1952
1953 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1954         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1955         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1956         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1957         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1958         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1959         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1960         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1961         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1962         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1963         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1964         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1965         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1966         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1967 };
1968
1969 static const struct video_device wl1273_viddev_template = {
1970         .fops                   = &wl1273_fops,
1971         .ioctl_ops              = &wl1273_ioctl_ops,
1972         .name                   = WL1273_FM_DRIVER_NAME,
1973         .release                = wl1273_vdev_release,
1974         .vfl_dir                = VFL_DIR_TX,
1975         .device_caps            = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
1976                                   V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1977                                   V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1978                                   V4L2_CAP_RDS_OUTPUT,
1979 };
1980
1981 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1982 {
1983         struct wl1273_device *radio = platform_get_drvdata(pdev);
1984         struct wl1273_core *core = radio->core;
1985
1986         dev_info(&pdev->dev, "%s.\n", __func__);
1987
1988         free_irq(core->client->irq, radio);
1989         core->pdata->free_resources();
1990
1991         v4l2_ctrl_handler_free(&radio->ctrl_handler);
1992         video_unregister_device(&radio->videodev);
1993         v4l2_device_unregister(&radio->v4l2dev);
1994
1995         return 0;
1996 }
1997
1998 static int wl1273_fm_radio_probe(struct platform_device *pdev)
1999 {
2000         struct wl1273_core **core = pdev->dev.platform_data;
2001         struct wl1273_device *radio;
2002         struct v4l2_ctrl *ctrl;
2003         int r = 0;
2004
2005         pr_debug("%s\n", __func__);
2006
2007         if (!core) {
2008                 dev_err(&pdev->dev, "No platform data.\n");
2009                 r = -EINVAL;
2010                 goto pdata_err;
2011         }
2012
2013         radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2014         if (!radio) {
2015                 r = -ENOMEM;
2016                 goto pdata_err;
2017         }
2018
2019         /* RDS buffer allocation */
2020         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2021         radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2022         if (!radio->buffer) {
2023                 pr_err("Cannot allocate memory for RDS buffer.\n");
2024                 r = -ENOMEM;
2025                 goto pdata_err;
2026         }
2027
2028         radio->core = *core;
2029         radio->irq_flags = WL1273_IRQ_MASK;
2030         radio->dev = &radio->core->client->dev;
2031         radio->rds_on = false;
2032         radio->core->mode = WL1273_MODE_OFF;
2033         radio->tx_power = 118;
2034         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2035         radio->band = WL1273_BAND_OTHER;
2036         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2037         radio->core->channel_number = 2;
2038         radio->core->volume = WL1273_DEFAULT_VOLUME;
2039         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2040         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2041         radio->rangelow = WL1273_BAND_OTHER_LOW;
2042         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2043         radio->stereo = true;
2044         radio->bus_type = "I2C";
2045
2046         if (radio->core->pdata->request_resources) {
2047                 r = radio->core->pdata->request_resources(radio->core->client);
2048                 if (r) {
2049                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2050                                 ": Cannot get platform data\n");
2051                         goto pdata_err;
2052                 }
2053
2054                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2055
2056                 r = request_threaded_irq(radio->core->client->irq, NULL,
2057                                          wl1273_fm_irq_thread_handler,
2058                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2059                                          "wl1273-fm", radio);
2060                 if (r < 0) {
2061                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2062                                 ": Unable to register IRQ handler: %d\n", r);
2063                         goto err_request_irq;
2064                 }
2065         } else {
2066                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");
2067                 r = -EINVAL;
2068                 goto pdata_err;
2069         }
2070
2071         init_completion(&radio->busy);
2072         init_waitqueue_head(&radio->read_queue);
2073
2074         radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2075         if (!radio->write_buf) {
2076                 r = -ENOMEM;
2077                 goto write_buf_err;
2078         }
2079
2080         radio->dev = &pdev->dev;
2081         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2082         radio->rds_users = 0;
2083
2084         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2085         if (r) {
2086                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2087                 goto write_buf_err;
2088         }
2089
2090         /* V4L2 configuration */
2091         radio->videodev = wl1273_viddev_template;
2092
2093         radio->videodev.v4l2_dev = &radio->v4l2dev;
2094
2095         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2096
2097         /* add in ascending ID order */
2098         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2099                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2100                           WL1273_DEFAULT_VOLUME);
2101
2102         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2103                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2104
2105         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2106                                V4L2_CID_TUNE_PREEMPHASIS,
2107                                V4L2_PREEMPHASIS_75_uS, 0x03,
2108                                V4L2_PREEMPHASIS_50_uS);
2109
2110         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2111                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2112
2113         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2114                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2115                                  0, 255, 1, 255);
2116         if (ctrl)
2117                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2118
2119         if (radio->ctrl_handler.error) {
2120                 r = radio->ctrl_handler.error;
2121                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2122                 goto handler_init_err;
2123         }
2124
2125         video_set_drvdata(&radio->videodev, radio);
2126         platform_set_drvdata(pdev, radio);
2127
2128         /* register video device */
2129         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2130         if (r) {
2131                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2132                         ": Could not register video device\n");
2133                 goto handler_init_err;
2134         }
2135
2136         return 0;
2137
2138 handler_init_err:
2139         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2140         v4l2_device_unregister(&radio->v4l2dev);
2141 write_buf_err:
2142         free_irq(radio->core->client->irq, radio);
2143 err_request_irq:
2144         radio->core->pdata->free_resources();
2145 pdata_err:
2146         return r;
2147 }
2148
2149 static struct platform_driver wl1273_fm_radio_driver = {
2150         .probe          = wl1273_fm_radio_probe,
2151         .remove         = wl1273_fm_radio_remove,
2152         .driver         = {
2153                 .name   = "wl1273_fm_radio",
2154         },
2155 };
2156
2157 module_platform_driver(wl1273_fm_radio_driver);
2158
2159 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2160 MODULE_DESCRIPTION(DRIVER_DESC);
2161 MODULE_LICENSE("GPL");
2162 MODULE_ALIAS("platform:wl1273_fm_radio");