kernel/drivers/media/radio/radio-wl1273.c

   1 /*
   2  * Driver for the Texas Instruments WL1273 FM radio.
   3  *
   4  * Copyright (C) 2011 Nokia Corporation
   5  * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include <linux/delay.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/mfd/wl1273-core.h>
  25 #include <linux/slab.h>
  26 #include <linux/module.h>
  27 #include <media/v4l2-common.h>
  28 #include <media/v4l2-ctrls.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/v4l2-ioctl.h>
  31
  32 #define DRIVER_DESC "Wl1273 FM Radio"
  33
  34 #define WL1273_POWER_SET_OFF            0
  35 #define WL1273_POWER_SET_FM             BIT(0)
  36 #define WL1273_POWER_SET_RDS            BIT(1)
  37 #define WL1273_POWER_SET_RETENTION      BIT(4)
  38
  39 #define WL1273_PUPD_SET_OFF             0x00
  40 #define WL1273_PUPD_SET_ON              0x01
  41 #define WL1273_PUPD_SET_RETENTION       0x10
  42
  43 #define WL1273_FREQ(x)          (x * 10000 / 625)
  44 #define WL1273_INV_FREQ(x)      (x * 625 / 10000)
  45
  46 /*
  47  * static int radio_nr - The number of the radio device
  48  *
  49  * The default is 0.
  50  */
  51 static int radio_nr;
  52 module_param(radio_nr, int, 0);
  53 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  54
  55 struct wl1273_device {
  56         char *bus_type;
  57
  58         u8 forbidden;
  59         unsigned int preemphasis;
  60         unsigned int spacing;
  61         unsigned int tx_power;
  62         unsigned int rx_frequency;
  63         unsigned int tx_frequency;
  64         unsigned int rangelow;
  65         unsigned int rangehigh;
  66         unsigned int band;
  67         bool stereo;
  68
  69         /* RDS */
  70         unsigned int rds_on;
  71
  72         wait_queue_head_t read_queue;
  73         struct mutex lock; /* for serializing fm radio operations */
  74         struct completion busy;
  75
  76         unsigned char *buffer;
  77         unsigned int buf_size;
  78         unsigned int rd_index;
  79         unsigned int wr_index;
  80
  81         /* Selected interrupts */
  82         u16 irq_flags;
  83         u16 irq_received;
  84
  85         struct v4l2_ctrl_handler ctrl_handler;
  86         struct v4l2_device v4l2dev;
  87         struct video_device videodev;
  88         struct device *dev;
  89         struct wl1273_core *core;
  90         struct file *owner;
  91         char *write_buf;
  92         unsigned int rds_users;
  93 };
  94
  95 #define WL1273_IRQ_MASK  (WL1273_FR_EVENT               |       \
  96                           WL1273_POW_ENB_EVENT)
  97
  98 /*
  99  * static unsigned int rds_buf - the number of RDS buffer blocks used.
 100  *
 101  * The default number is 100.
 102  */
 103 static unsigned int rds_buf = 100;
 104 module_param(rds_buf, uint, 0);
 105 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
 106
 107 static int wl1273_fm_write_fw(struct wl1273_core *core,
 108                               __u8 *fw, int len)
 109 {
 110         struct i2c_client *client = core->client;
 111         struct i2c_msg msg;
 112         int i, r = 0;
 113
 114         msg.addr = client->addr;
 115         msg.flags = 0;
 116
 117         for (i = 0; i <= len; i++) {
 118                 msg.len = fw[0];
 119                 msg.buf = fw + 1;
 120
 121                 fw += msg.len + 1;
 122                 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
 123
 124                 r = i2c_transfer(client->adapter, &msg, 1);
 125                 if (r < 0 && i < len + 1)
 126                         break;
 127         }
 128
 129         dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
 130         dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
 131
 132         /* Last transfer always fails. */
 133         if (i == len || r == 1)
 134                 r = 0;
 135
 136         return r;
 137 }
 138
 139 #define WL1273_FIFO_HAS_DATA(status)    (1 << 5 & status)
 140 #define WL1273_RDS_CORRECTABLE_ERROR    (1 << 3)
 141 #define WL1273_RDS_UNCORRECTABLE_ERROR  (1 << 4)
 142
 143 static int wl1273_fm_rds(struct wl1273_device *radio)
 144 {
 145         struct wl1273_core *core = radio->core;
 146         struct i2c_client *client = core->client;
 147         u16 val;
 148         u8 b0 = WL1273_RDS_DATA_GET, status;
 149         struct v4l2_rds_data rds = { 0, 0, 0 };
 150         struct i2c_msg msg[] = {
 151                 {
 152                         .addr = client->addr,
 153                         .flags = 0,
 154                         .buf = &b0,
 155                         .len = 1,
 156                 },
 157                 {
 158                         .addr = client->addr,
 159                         .flags = I2C_M_RD,
 160                         .buf = (u8 *) &rds,
 161                         .len = sizeof(rds),
 162                 }
 163         };
 164         int r;
 165
 166         if (core->mode != WL1273_MODE_RX)
 167                 return 0;
 168
 169         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
 170         if (r)
 171                 return r;
 172
 173         if ((val & 0x01) == 0) {
 174                 /* RDS decoder not synchronized */
 175                 return -EAGAIN;
 176         }
 177
 178         /* copy all four RDS blocks to internal buffer */
 179         do {
 180                 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
 181                 if (r != ARRAY_SIZE(msg)) {
 182                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
 183                                 ": %s: read_rds error r == %i)\n",
 184                                 __func__, r);
 185                 }
 186
 187                 status = rds.block;
 188
 189                 if (!WL1273_FIFO_HAS_DATA(status))
 190                         break;
 191
 192                 /* copy bits 0-2 (the block ID) to bits 3-5 */
 193                 rds.block = V4L2_RDS_BLOCK_MSK & status;
 194                 rds.block |= rds.block << 3;
 195
 196                 /* copy the error bits to standard positions */
 197                 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
 198                         rds.block |= V4L2_RDS_BLOCK_ERROR;
 199                         rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
 200                 } else if  (WL1273_RDS_CORRECTABLE_ERROR & status) {
 201                         rds.block &= ~V4L2_RDS_BLOCK_ERROR;
 202                         rds.block |= V4L2_RDS_BLOCK_CORRECTED;
 203                 }
 204
 205                 /* copy RDS block to internal buffer */
 206                 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
 207                 radio->wr_index += 3;
 208
 209                 /* wrap write pointer */
 210                 if (radio->wr_index >= radio->buf_size)
 211                         radio->wr_index = 0;
 212
 213                 /* check for overflow & start over */
 214                 if (radio->wr_index == radio->rd_index) {
 215                         dev_dbg(radio->dev, "RDS OVERFLOW");
 216
 217                         radio->rd_index = 0;
 218                         radio->wr_index = 0;
 219                         break;
 220                 }
 221         } while (WL1273_FIFO_HAS_DATA(status));
 222
 223         /* wake up read queue */
 224         if (radio->wr_index != radio->rd_index)
 225                 wake_up_interruptible(&radio->read_queue);
 226
 227         return 0;
 228 }
 229
 230 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
 231 {
 232         struct wl1273_device *radio = dev_id;
 233         struct wl1273_core *core = radio->core;
 234         u16 flags;
 235         int r;
 236
 237         r = core->read(core, WL1273_FLAG_GET, &flags);
 238         if (r)
 239                 goto out;
 240
 241         if (flags & WL1273_BL_EVENT) {
 242                 radio->irq_received = flags;
 243                 dev_dbg(radio->dev, "IRQ: BL\n");
 244         }
 245
 246         if (flags & WL1273_RDS_EVENT) {
 247                 msleep(200);
 248
 249                 wl1273_fm_rds(radio);
 250         }
 251
 252         if (flags & WL1273_BBLK_EVENT)
 253                 dev_dbg(radio->dev, "IRQ: BBLK\n");
 254
 255         if (flags & WL1273_LSYNC_EVENT)
 256                 dev_dbg(radio->dev, "IRQ: LSYNC\n");
 257
 258         if (flags & WL1273_LEV_EVENT) {
 259                 u16 level;
 260
 261                 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
 262                 if (r)
 263                         goto out;
 264
 265                 if (level > 14)
 266                         dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
 267         }
 268
 269         if (flags & WL1273_IFFR_EVENT)
 270                 dev_dbg(radio->dev, "IRQ: IFFR\n");
 271
 272         if (flags & WL1273_PI_EVENT)
 273                 dev_dbg(radio->dev, "IRQ: PI\n");
 274
 275         if (flags & WL1273_PD_EVENT)
 276                 dev_dbg(radio->dev, "IRQ: PD\n");
 277
 278         if (flags & WL1273_STIC_EVENT)
 279                 dev_dbg(radio->dev, "IRQ: STIC\n");
 280
 281         if (flags & WL1273_MAL_EVENT)
 282                 dev_dbg(radio->dev, "IRQ: MAL\n");
 283
 284         if (flags & WL1273_POW_ENB_EVENT) {
 285                 complete(&radio->busy);
 286                 dev_dbg(radio->dev, "NOT BUSY\n");
 287                 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
 288         }
 289
 290         if (flags & WL1273_SCAN_OVER_EVENT)
 291                 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
 292
 293         if (flags & WL1273_ERROR_EVENT)
 294                 dev_dbg(radio->dev, "IRQ: ERROR\n");
 295
 296         if (flags & WL1273_FR_EVENT) {
 297                 u16 freq;
 298
 299                 dev_dbg(radio->dev, "IRQ: FR:\n");
 300
 301                 if (core->mode == WL1273_MODE_RX) {
 302                         r = core->write(core, WL1273_TUNER_MODE_SET,
 303                                         TUNER_MODE_STOP_SEARCH);
 304                         if (r) {
 305                                 dev_err(radio->dev,
 306                                         "%s: TUNER_MODE_SET fails: %d\n",
 307                                         __func__, r);
 308                                 goto out;
 309                         }
 310
 311                         r = core->read(core, WL1273_FREQ_SET, &freq);
 312                         if (r)
 313                                 goto out;
 314
 315                         if (radio->band == WL1273_BAND_JAPAN)
 316                                 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
 317                                         freq * 50;
 318                         else
 319                                 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
 320                                         freq * 50;
 321                         /*
 322                          *  The driver works better with this msleep,
 323                          *  the documentation doesn't mention it.
 324                          */
 325                         usleep_range(10000, 15000);
 326
 327                         dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
 328
 329                 } else {
 330                         r = core->read(core, WL1273_CHANL_SET, &freq);
 331                         if (r)
 332                                 goto out;
 333
 334                         dev_dbg(radio->dev, "%dkHz\n", freq);
 335                 }
 336                 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
 337         }
 338
 339 out:
 340         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 341         complete(&radio->busy);
 342
 343         return IRQ_HANDLED;
 344 }
 345
 346 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 347 {
 348         struct wl1273_core *core = radio->core;
 349         int r = 0;
 350         unsigned long t;
 351
 352         if (freq < WL1273_BAND_TX_LOW) {
 353                 dev_err(radio->dev,
 354                         "Frequency out of range: %d < %d\n", freq,
 355                         WL1273_BAND_TX_LOW);
 356                 return -ERANGE;
 357         }
 358
 359         if (freq > WL1273_BAND_TX_HIGH) {
 360                 dev_err(radio->dev,
 361                         "Frequency out of range: %d > %d\n", freq,
 362                         WL1273_BAND_TX_HIGH);
 363                 return -ERANGE;
 364         }
 365
 366         /*
 367          *  The driver works better with this sleep,
 368          *  the documentation doesn't mention it.
 369          */
 370         usleep_range(5000, 10000);
 371
 372         dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 373
 374         /* Set the current tx channel */
 375         r = core->write(core, WL1273_CHANL_SET, freq / 10);
 376         if (r)
 377                 return r;
 378
 379         reinit_completion(&radio->busy);
 380
 381         /* wait for the FR IRQ */
 382         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 383         if (!t)
 384                 return -ETIMEDOUT;
 385
 386         dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
 387
 388         /* Enable the output power */
 389         r = core->write(core, WL1273_POWER_ENB_SET, 1);
 390         if (r)
 391                 return r;
 392
 393         reinit_completion(&radio->busy);
 394
 395         /* wait for the POWER_ENB IRQ */
 396         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 397         if (!t)
 398                 return -ETIMEDOUT;
 399
 400         radio->tx_frequency = freq;
 401         dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
 402
 403         return  0;
 404 }
 405
 406 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 407 {
 408         struct wl1273_core *core = radio->core;
 409         int r, f;
 410         unsigned long t;
 411
 412         if (freq < radio->rangelow) {
 413                 dev_err(radio->dev,
 414                         "Frequency out of range: %d < %d\n", freq,
 415                         radio->rangelow);
 416                 r = -ERANGE;
 417                 goto err;
 418         }
 419
 420         if (freq > radio->rangehigh) {
 421                 dev_err(radio->dev,
 422                         "Frequency out of range: %d > %d\n", freq,
 423                         radio->rangehigh);
 424                 r = -ERANGE;
 425                 goto err;
 426         }
 427
 428         dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 429
 430         core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 431
 432         if (radio->band == WL1273_BAND_JAPAN)
 433                 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 434         else
 435                 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 436
 437         r = core->write(core, WL1273_FREQ_SET, f);
 438         if (r) {
 439                 dev_err(radio->dev, "FREQ_SET fails\n");
 440                 goto err;
 441         }
 442
 443         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 444         if (r) {
 445                 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 446                 goto err;
 447         }
 448
 449         reinit_completion(&radio->busy);
 450
 451         t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 452         if (!t) {
 453                 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 454                 return -ETIMEDOUT;
 455         }
 456
 457         radio->rd_index = 0;
 458         radio->wr_index = 0;
 459         radio->rx_frequency = freq;
 460         return 0;
 461 err:
 462         return r;
 463 }
 464
 465 static int wl1273_fm_get_freq(struct wl1273_device *radio)
 466 {
 467         struct wl1273_core *core = radio->core;
 468         unsigned int freq;
 469         u16 f;
 470         int r;
 471
 472         if (core->mode == WL1273_MODE_RX) {
 473                 r = core->read(core, WL1273_FREQ_SET, &f);
 474                 if (r)
 475                         return r;
 476
 477                 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 478                 if (radio->band == WL1273_BAND_JAPAN)
 479                         freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 480                 else
 481                         freq = WL1273_BAND_OTHER_LOW + 50 * f;
 482         } else {
 483                 r = core->read(core, WL1273_CHANL_SET, &f);
 484                 if (r)
 485                         return r;
 486
 487                 freq = f * 10;
 488         }
 489
 490         return freq;
 491 }
 492
 493 /**
 494  * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 495  * @radio:                              A pointer to the device struct.
 496  *
 497  * The firmware file consists of arrays of bytes where the first byte
 498  * gives the array length. The first byte in the file gives the
 499  * number of these arrays.
 500  */
 501 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 502 {
 503         struct wl1273_core *core = radio->core;
 504         unsigned int packet_num;
 505         const struct firmware *fw_p;
 506         const char *fw_name = "radio-wl1273-fw.bin";
 507         struct device *dev = radio->dev;
 508         __u8 *ptr;
 509         int r;
 510
 511         dev_dbg(dev, "%s:\n", __func__);
 512
 513         /*
 514          * Uploading the firmware patch is not always necessary,
 515          * so we only print an info message.
 516          */
 517         if (request_firmware(&fw_p, fw_name, dev)) {
 518                 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 519
 520                 return 0;
 521         }
 522
 523         ptr = (__u8 *) fw_p->data;
 524         packet_num = ptr[0];
 525         dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 526
 527         r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 528         if (r) {
 529                 dev_err(dev, "FW upload error: %d\n", r);
 530                 goto out;
 531         }
 532
 533         /* ignore possible error here */
 534         core->write(core, WL1273_RESET, 0);
 535
 536         dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 537 out:
 538         release_firmware(fw_p);
 539         return r;
 540 }
 541
 542 static int wl1273_fm_stop(struct wl1273_device *radio)
 543 {
 544         struct wl1273_core *core = radio->core;
 545
 546         if (core->mode == WL1273_MODE_RX) {
 547                 int r = core->write(core, WL1273_POWER_SET,
 548                                     WL1273_POWER_SET_OFF);
 549                 if (r)
 550                         dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 551                                 __func__, r);
 552         } else if (core->mode == WL1273_MODE_TX) {
 553                 int r = core->write(core, WL1273_PUPD_SET,
 554                                     WL1273_PUPD_SET_OFF);
 555                 if (r)
 556                         dev_err(radio->dev,
 557                                 "%s: PUPD_SET fails: %d\n", __func__, r);
 558         }
 559
 560         if (core->pdata->disable) {
 561                 core->pdata->disable();
 562                 dev_dbg(radio->dev, "Back to reset\n");
 563         }
 564
 565         return 0;
 566 }
 567
 568 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 569 {
 570         struct wl1273_core *core = radio->core;
 571         struct wl1273_fm_platform_data *pdata = core->pdata;
 572         struct device *dev = radio->dev;
 573         int r = -EINVAL;
 574
 575         if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 576                 dev_dbg(radio->dev, "Out of reset\n");
 577
 578                 pdata->enable();
 579                 msleep(250);
 580         }
 581
 582         if (new_mode == WL1273_MODE_RX) {
 583                 u16 val = WL1273_POWER_SET_FM;
 584
 585                 if (radio->rds_on)
 586                         val |= WL1273_POWER_SET_RDS;
 587
 588                 /* If this fails try again */
 589                 r = core->write(core, WL1273_POWER_SET, val);
 590                 if (r) {
 591                         msleep(100);
 592
 593                         r = core->write(core, WL1273_POWER_SET, val);
 594                         if (r) {
 595                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 596                                 goto fail;
 597                         }
 598                 }
 599
 600                 /* rds buffer configuration */
 601                 radio->wr_index = 0;
 602                 radio->rd_index = 0;
 603
 604         } else if (new_mode == WL1273_MODE_TX) {
 605                 /* If this fails try again once */
 606                 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 607                 if (r) {
 608                         msleep(100);
 609                         r = core->write(core, WL1273_PUPD_SET,
 610                                         WL1273_PUPD_SET_ON);
 611                         if (r) {
 612                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 613                                 goto fail;
 614                         }
 615                 }
 616
 617                 if (radio->rds_on)
 618                         r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 619                 else
 620                         r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 621         } else {
 622                 dev_warn(dev, "%s: Illegal mode.\n", __func__);
 623         }
 624
 625         if (core->mode == WL1273_MODE_OFF) {
 626                 r = wl1273_fm_upload_firmware_patch(radio);
 627                 if (r)
 628                         dev_warn(dev, "Firmware upload failed.\n");
 629
 630                 /*
 631                  * Sometimes the chip is in a wrong power state at this point.
 632                  * So we set the power once again.
 633                  */
 634                 if (new_mode == WL1273_MODE_RX) {
 635                         u16 val = WL1273_POWER_SET_FM;
 636
 637                         if (radio->rds_on)
 638                                 val |= WL1273_POWER_SET_RDS;
 639
 640                         r = core->write(core, WL1273_POWER_SET, val);
 641                         if (r) {
 642                                 dev_err(dev, "%s: POWER_SET fails\n", __func__);
 643                                 goto fail;
 644                         }
 645                 } else if (new_mode == WL1273_MODE_TX) {
 646                         r = core->write(core, WL1273_PUPD_SET,
 647                                         WL1273_PUPD_SET_ON);
 648                         if (r) {
 649                                 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 650                                 goto fail;
 651                         }
 652                 }
 653         }
 654
 655         return 0;
 656 fail:
 657         if (pdata->disable)
 658                 pdata->disable();
 659
 660         dev_dbg(dev, "%s: return: %d\n", __func__, r);
 661         return r;
 662 }
 663
 664 static int wl1273_fm_suspend(struct wl1273_device *radio)
 665 {
 666         struct wl1273_core *core = radio->core;
 667         int r = 0;
 668
 669         /* Cannot go from OFF to SUSPENDED */
 670         if (core->mode == WL1273_MODE_RX)
 671                 r = core->write(core, WL1273_POWER_SET,
 672                                 WL1273_POWER_SET_RETENTION);
 673         else if (core->mode == WL1273_MODE_TX)
 674                 r = core->write(core, WL1273_PUPD_SET,
 675                                 WL1273_PUPD_SET_RETENTION);
 676         else
 677                 r = -EINVAL;
 678
 679         if (r) {
 680                 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 681                 goto out;
 682         }
 683
 684 out:
 685         return r;
 686 }
 687
 688 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 689 {
 690         struct wl1273_core *core = radio->core;
 691         struct device *dev = radio->dev;
 692         int old_mode;
 693         int r;
 694
 695         dev_dbg(dev, "%s\n", __func__);
 696         dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 697
 698         old_mode = core->mode;
 699         if (mode & radio->forbidden) {
 700                 r = -EPERM;
 701                 goto out;
 702         }
 703
 704         switch (mode) {
 705         case WL1273_MODE_RX:
 706         case WL1273_MODE_TX:
 707                 r = wl1273_fm_start(radio, mode);
 708                 if (r) {
 709                         dev_err(dev, "%s: Cannot start.\n", __func__);
 710                         wl1273_fm_stop(radio);
 711                         goto out;
 712                 }
 713
 714                 core->mode = mode;
 715                 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 716                 if (r) {
 717                         dev_err(dev, "INT_MASK_SET fails.\n");
 718                         goto out;
 719                 }
 720
 721                 /* remember previous settings */
 722                 if (mode == WL1273_MODE_RX) {
 723                         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 724                         if (r) {
 725                                 dev_err(dev, "set freq fails: %d.\n", r);
 726                                 goto out;
 727                         }
 728
 729                         r = core->set_volume(core, core->volume);
 730                         if (r) {
 731                                 dev_err(dev, "set volume fails: %d.\n", r);
 732                                 goto out;
 733                         }
 734
 735                         dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 736                                 core->volume);
 737                 } else {
 738                         r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 739                         if (r) {
 740                                 dev_err(dev, "set freq fails: %d.\n", r);
 741                                 goto out;
 742                         }
 743                 }
 744
 745                 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 746
 747                 r = core->set_audio(core, core->audio_mode);
 748                 if (r)
 749                         dev_err(dev, "Cannot set audio mode.\n");
 750                 break;
 751
 752         case WL1273_MODE_OFF:
 753                 r = wl1273_fm_stop(radio);
 754                 if (r)
 755                         dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 756                 else
 757                         core->mode = WL1273_MODE_OFF;
 758
 759                 break;
 760
 761         case WL1273_MODE_SUSPENDED:
 762                 r = wl1273_fm_suspend(radio);
 763                 if (r)
 764                         dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 765                 else
 766                         core->mode = WL1273_MODE_SUSPENDED;
 767
 768                 break;
 769
 770         default:
 771                 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 772                 r = -EINVAL;
 773                 break;
 774         }
 775 out:
 776         if (r)
 777                 core->mode = old_mode;
 778
 779         return r;
 780 }
 781
 782 static int wl1273_fm_set_seek(struct wl1273_device *radio,
 783                               unsigned int wrap_around,
 784                               unsigned int seek_upward,
 785                               int level)
 786 {
 787         struct wl1273_core *core = radio->core;
 788         int r = 0;
 789         unsigned int dir = (seek_upward == 0) ? 0 : 1;
 790         unsigned int f;
 791
 792         f = radio->rx_frequency;
 793         dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 794
 795         if (dir && f + radio->spacing <= radio->rangehigh)
 796                 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 797         else if (dir && wrap_around)
 798                 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 799         else if (f - radio->spacing >= radio->rangelow)
 800                 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 801         else if (wrap_around)
 802                 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 803
 804         if (r)
 805                 goto out;
 806
 807         if (level < SCHAR_MIN || level > SCHAR_MAX)
 808                 return -EINVAL;
 809
 810         reinit_completion(&radio->busy);
 811         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 812
 813         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 814         if (r)
 815                 goto out;
 816
 817         dev_dbg(radio->dev, "%s\n", __func__);
 818
 819         r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 820         if (r)
 821                 goto out;
 822
 823         r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 824         if (r)
 825                 goto out;
 826
 827         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 828         if (r)
 829                 goto out;
 830
 831         /* wait for the FR IRQ */
 832         wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 833         if (!(radio->irq_received & WL1273_BL_EVENT)) {
 834                 r = -ETIMEDOUT;
 835                 goto out;
 836         }
 837
 838         radio->irq_received &= ~WL1273_BL_EVENT;
 839
 840         if (!wrap_around)
 841                 goto out;
 842
 843         /* Wrap around */
 844         dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 845
 846         if (seek_upward)
 847                 f = radio->rangelow;
 848         else
 849                 f = radio->rangehigh;
 850
 851         r = wl1273_fm_set_rx_freq(radio, f);
 852         if (r)
 853                 goto out;
 854
 855         reinit_completion(&radio->busy);
 856         dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 857
 858         r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 859         if (r)
 860                 goto out;
 861
 862         /* wait for the FR IRQ */
 863         if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
 864                 r = -ETIMEDOUT;
 865 out:
 866         dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 867         return r;
 868 }
 869
 870 /**
 871  * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 872  * @radio:                      A pointer to the device struct.
 873  */
 874 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 875 {
 876         struct wl1273_core *core = radio->core;
 877         struct device *dev = radio->dev;
 878         u16 val;
 879         int r;
 880
 881         if (core->mode == WL1273_MODE_OFF ||
 882             core->mode == WL1273_MODE_SUSPENDED)
 883                 return -EPERM;
 884
 885         r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 886         if (r) {
 887                 dev_err(dev, "%s: read error: %d\n", __func__, r);
 888                 goto out;
 889         }
 890
 891 out:
 892         return val;
 893 }
 894
 895 /**
 896  * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 897  * @radio:                       A pointer to the device struct.
 898  * @preemphasis:                 The new pre-amphasis value.
 899  *
 900  * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 901  * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 902  */
 903 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 904                                      unsigned int preemphasis)
 905 {
 906         struct wl1273_core *core = radio->core;
 907         int r;
 908         u16 em;
 909
 910         if (core->mode == WL1273_MODE_OFF ||
 911             core->mode == WL1273_MODE_SUSPENDED)
 912                 return -EPERM;
 913
 914         mutex_lock(&core->lock);
 915
 916         switch (preemphasis) {
 917         case V4L2_PREEMPHASIS_DISABLED:
 918                 em = 1;
 919                 break;
 920         case V4L2_PREEMPHASIS_50_uS:
 921                 em = 0;
 922                 break;
 923         case V4L2_PREEMPHASIS_75_uS:
 924                 em = 2;
 925                 break;
 926         default:
 927                 r = -EINVAL;
 928                 goto out;
 929         }
 930
 931         r = core->write(core, WL1273_PREMPH_SET, em);
 932         if (r)
 933                 goto out;
 934
 935         radio->preemphasis = preemphasis;
 936
 937 out:
 938         mutex_unlock(&core->lock);
 939         return r;
 940 }
 941
 942 static int wl1273_fm_rds_on(struct wl1273_device *radio)
 943 {
 944         struct wl1273_core *core = radio->core;
 945         int r;
 946
 947         dev_dbg(radio->dev, "%s\n", __func__);
 948         if (radio->rds_on)
 949                 return 0;
 950
 951         r = core->write(core, WL1273_POWER_SET,
 952                         WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 953         if (r)
 954                 goto out;
 955
 956         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 957         if (r)
 958                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 959 out:
 960         return r;
 961 }
 962
 963 static int wl1273_fm_rds_off(struct wl1273_device *radio)
 964 {
 965         struct wl1273_core *core = radio->core;
 966         int r;
 967
 968         if (!radio->rds_on)
 969                 return 0;
 970
 971         radio->irq_flags &= ~WL1273_RDS_EVENT;
 972
 973         r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 974         if (r)
 975                 goto out;
 976
 977         /* Service pending read */
 978         wake_up_interruptible(&radio->read_queue);
 979
 980         dev_dbg(radio->dev, "%s\n", __func__);
 981
 982         r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 983         if (r)
 984                 goto out;
 985
 986         r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 987         if (r)
 988                 dev_err(radio->dev, "set freq fails: %d.\n", r);
 989 out:
 990         dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 991
 992         return r;
 993 }
 994
 995 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
 996 {
 997         int r = 0;
 998         struct wl1273_core *core = radio->core;
 999
1000         if (core->mode == WL1273_MODE_OFF ||
1001             core->mode == WL1273_MODE_SUSPENDED)
1002                 return -EPERM;
1003
1004         if (new_mode == WL1273_RDS_RESET) {
1005                 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1006                 return r;
1007         }
1008
1009         if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1010                 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1011         } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1012                 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1013         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1014                 r = wl1273_fm_rds_off(radio);
1015         } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1016                 r = wl1273_fm_rds_on(radio);
1017         } else {
1018                 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1019                         __func__, new_mode);
1020                 r = -EINVAL;
1021         }
1022
1023         if (!r)
1024                 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1025
1026         return r;
1027 }
1028
1029 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1030                                     size_t count, loff_t *ppos)
1031 {
1032         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1033         struct wl1273_core *core = radio->core;
1034         u16 val;
1035         int r;
1036
1037         dev_dbg(radio->dev, "%s\n", __func__);
1038
1039         if (core->mode != WL1273_MODE_TX)
1040                 return count;
1041
1042         if (radio->rds_users == 0) {
1043                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1044                 return 0;
1045         }
1046
1047         if (mutex_lock_interruptible(&core->lock))
1048                 return -EINTR;
1049         /*
1050          * Multiple processes can open the device, but only
1051          * one gets to write to it.
1052          */
1053         if (radio->owner && radio->owner != file) {
1054                 r = -EBUSY;
1055                 goto out;
1056         }
1057         radio->owner = file;
1058
1059         /* Manual Mode */
1060         if (count > 255)
1061                 val = 255;
1062         else
1063                 val = count;
1064
1065         core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1066
1067         if (copy_from_user(radio->write_buf + 1, buf, val)) {
1068                 r = -EFAULT;
1069                 goto out;
1070         }
1071
1072         dev_dbg(radio->dev, "Count: %d\n", val);
1073         dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1074
1075         radio->write_buf[0] = WL1273_RDS_DATA_SET;
1076         core->write_data(core, radio->write_buf, val + 1);
1077
1078         r = val;
1079 out:
1080         mutex_unlock(&core->lock);
1081
1082         return r;
1083 }
1084
1085 static unsigned int wl1273_fm_fops_poll(struct file *file,
1086                                         struct poll_table_struct *pts)
1087 {
1088         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1089         struct wl1273_core *core = radio->core;
1090
1091         if (radio->owner && radio->owner != file)
1092                 return -EBUSY;
1093
1094         radio->owner = file;
1095
1096         if (core->mode == WL1273_MODE_RX) {
1097                 poll_wait(file, &radio->read_queue, pts);
1098
1099                 if (radio->rd_index != radio->wr_index)
1100                         return POLLIN | POLLRDNORM;
1101
1102         } else if (core->mode == WL1273_MODE_TX) {
1103                 return POLLOUT | POLLWRNORM;
1104         }
1105
1106         return 0;
1107 }
1108
1109 static int wl1273_fm_fops_open(struct file *file)
1110 {
1111         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1112         struct wl1273_core *core = radio->core;
1113         int r = 0;
1114
1115         dev_dbg(radio->dev, "%s\n", __func__);
1116
1117         if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1118             !radio->rds_users) {
1119                 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1120
1121                 if (mutex_lock_interruptible(&core->lock))
1122                         return -EINTR;
1123
1124                 radio->irq_flags |= WL1273_RDS_EVENT;
1125
1126                 r = core->write(core, WL1273_INT_MASK_SET,
1127                                 radio->irq_flags);
1128                 if (r) {
1129                         mutex_unlock(&core->lock);
1130                         goto out;
1131                 }
1132
1133                 radio->rds_users++;
1134
1135                 mutex_unlock(&core->lock);
1136         }
1137 out:
1138         return r;
1139 }
1140
1141 static int wl1273_fm_fops_release(struct file *file)
1142 {
1143         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1144         struct wl1273_core *core = radio->core;
1145         int r = 0;
1146
1147         dev_dbg(radio->dev, "%s\n", __func__);
1148
1149         if (radio->rds_users > 0) {
1150                 radio->rds_users--;
1151                 if (radio->rds_users == 0) {
1152                         if (mutex_lock_interruptible(&core->lock))
1153                                 return -EINTR;
1154
1155                         radio->irq_flags &= ~WL1273_RDS_EVENT;
1156
1157                         if (core->mode == WL1273_MODE_RX) {
1158                                 r = core->write(core,
1159                                                 WL1273_INT_MASK_SET,
1160                                                 radio->irq_flags);
1161                                 if (r) {
1162                                         mutex_unlock(&core->lock);
1163                                         goto out;
1164                                 }
1165                         }
1166                         mutex_unlock(&core->lock);
1167                 }
1168         }
1169
1170         if (file == radio->owner)
1171                 radio->owner = NULL;
1172 out:
1173         return r;
1174 }
1175
1176 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1177                                    size_t count, loff_t *ppos)
1178 {
1179         int r = 0;
1180         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1181         struct wl1273_core *core = radio->core;
1182         unsigned int block_count = 0;
1183         u16 val;
1184
1185         dev_dbg(radio->dev, "%s\n", __func__);
1186
1187         if (core->mode != WL1273_MODE_RX)
1188                 return 0;
1189
1190         if (radio->rds_users == 0) {
1191                 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1192                 return 0;
1193         }
1194
1195         if (mutex_lock_interruptible(&core->lock))
1196                 return -EINTR;
1197
1198         /*
1199          * Multiple processes can open the device, but only
1200          * one at a time gets read access.
1201          */
1202         if (radio->owner && radio->owner != file) {
1203                 r = -EBUSY;
1204                 goto out;
1205         }
1206         radio->owner = file;
1207
1208         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1209         if (r) {
1210                 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1211                 goto out;
1212         } else if (val == 0) {
1213                 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1214                 r = -ENODATA;
1215                 goto out;
1216         }
1217
1218         /* block if no new data available */
1219         while (radio->wr_index == radio->rd_index) {
1220                 if (file->f_flags & O_NONBLOCK) {
1221                         r = -EWOULDBLOCK;
1222                         goto out;
1223                 }
1224
1225                 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1226                 if (wait_event_interruptible(radio->read_queue,
1227                                              radio->wr_index !=
1228                                              radio->rd_index) < 0) {
1229                         r = -EINTR;
1230                         goto out;
1231                 }
1232         }
1233
1234         /* calculate block count from byte count */
1235         count /= RDS_BLOCK_SIZE;
1236
1237         /* copy RDS blocks from the internal buffer and to user buffer */
1238         while (block_count < count) {
1239                 if (radio->rd_index == radio->wr_index)
1240                         break;
1241
1242                 /* always transfer complete RDS blocks */
1243                 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1244                                  RDS_BLOCK_SIZE))
1245                         break;
1246
1247                 /* increment and wrap the read pointer */
1248                 radio->rd_index += RDS_BLOCK_SIZE;
1249                 if (radio->rd_index >= radio->buf_size)
1250                         radio->rd_index = 0;
1251
1252                 /* increment counters */
1253                 block_count++;
1254                 buf += RDS_BLOCK_SIZE;
1255                 r += RDS_BLOCK_SIZE;
1256         }
1257
1258 out:
1259         dev_dbg(radio->dev, "%s: exit\n", __func__);
1260         mutex_unlock(&core->lock);
1261
1262         return r;
1263 }
1264
1265 static const struct v4l2_file_operations wl1273_fops = {
1266         .owner          = THIS_MODULE,
1267         .read           = wl1273_fm_fops_read,
1268         .write          = wl1273_fm_fops_write,
1269         .poll           = wl1273_fm_fops_poll,
1270         .unlocked_ioctl = video_ioctl2,
1271         .open           = wl1273_fm_fops_open,
1272         .release        = wl1273_fm_fops_release,
1273 };
1274
1275 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1276                                      struct v4l2_capability *capability)
1277 {
1278         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1279
1280         dev_dbg(radio->dev, "%s\n", __func__);
1281
1282         strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1283                 sizeof(capability->driver));
1284         strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1285                 sizeof(capability->card));
1286         strlcpy(capability->bus_info, radio->bus_type,
1287                 sizeof(capability->bus_info));
1288
1289         capability->device_caps = V4L2_CAP_HW_FREQ_SEEK |
1290                 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1291                 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1292                 V4L2_CAP_RDS_OUTPUT;
1293         capability->capabilities = capability->device_caps |
1294                 V4L2_CAP_DEVICE_CAPS;
1295
1296         return 0;
1297 }
1298
1299 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1300                                     unsigned int *i)
1301 {
1302         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1303
1304         dev_dbg(radio->dev, "%s\n", __func__);
1305
1306         *i = 0;
1307
1308         return 0;
1309 }
1310
1311 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1312                                     unsigned int i)
1313 {
1314         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1315
1316         dev_dbg(radio->dev, "%s\n", __func__);
1317
1318         if (i != 0)
1319                 return -EINVAL;
1320
1321         return 0;
1322 }
1323
1324 /**
1325  * wl1273_fm_set_tx_power() -   Set the transmission power value.
1326  * @core:                       A pointer to the device struct.
1327  * @power:                      The new power value.
1328  */
1329 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1330 {
1331         struct wl1273_core *core = radio->core;
1332         int r;
1333
1334         if (core->mode == WL1273_MODE_OFF ||
1335             core->mode == WL1273_MODE_SUSPENDED)
1336                 return -EPERM;
1337
1338         mutex_lock(&core->lock);
1339
1340         /* Convert the dBuV value to chip presentation */
1341         r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1342         if (r)
1343                 goto out;
1344
1345         radio->tx_power = power;
1346
1347 out:
1348         mutex_unlock(&core->lock);
1349         return r;
1350 }
1351
1352 #define WL1273_SPACING_50kHz    1
1353 #define WL1273_SPACING_100kHz   2
1354 #define WL1273_SPACING_200kHz   4
1355
1356 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1357                                     unsigned int spacing)
1358 {
1359         struct wl1273_core *core = radio->core;
1360         int r;
1361
1362         if (spacing == 0) {
1363                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1364                                 WL1273_SPACING_100kHz);
1365                 radio->spacing = 100;
1366         } else if (spacing - 50000 < 25000) {
1367                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1368                                 WL1273_SPACING_50kHz);
1369                 radio->spacing = 50;
1370         } else if (spacing - 100000 < 50000) {
1371                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1372                                 WL1273_SPACING_100kHz);
1373                 radio->spacing = 100;
1374         } else {
1375                 r = core->write(core, WL1273_SCAN_SPACING_SET,
1376                                 WL1273_SPACING_200kHz);
1377                 radio->spacing = 200;
1378         }
1379
1380         return r;
1381 }
1382
1383 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1384 {
1385         struct wl1273_device *radio = ctrl->priv;
1386         struct wl1273_core *core = radio->core;
1387
1388         dev_dbg(radio->dev, "%s\n", __func__);
1389
1390         if (mutex_lock_interruptible(&core->lock))
1391                 return -EINTR;
1392
1393         switch (ctrl->id) {
1394         case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1395                 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1396                 break;
1397
1398         default:
1399                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1400                          __func__, ctrl->id);
1401                 break;
1402         }
1403
1404         mutex_unlock(&core->lock);
1405
1406         return 0;
1407 }
1408
1409 #define WL1273_MUTE_SOFT_ENABLE    (1 << 0)
1410 #define WL1273_MUTE_AC             (1 << 1)
1411 #define WL1273_MUTE_HARD_LEFT      (1 << 2)
1412 #define WL1273_MUTE_HARD_RIGHT     (1 << 3)
1413 #define WL1273_MUTE_SOFT_FORCE     (1 << 4)
1414
1415 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1416 {
1417         return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1418 }
1419
1420 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1421 {
1422         struct wl1273_device *radio = to_radio(ctrl);
1423         struct wl1273_core *core = radio->core;
1424         int r = 0;
1425
1426         dev_dbg(radio->dev, "%s\n", __func__);
1427
1428         switch (ctrl->id) {
1429         case V4L2_CID_AUDIO_MUTE:
1430                 if (mutex_lock_interruptible(&core->lock))
1431                         return -EINTR;
1432
1433                 if (core->mode == WL1273_MODE_RX && ctrl->val)
1434                         r = core->write(core,
1435                                         WL1273_MUTE_STATUS_SET,
1436                                         WL1273_MUTE_HARD_LEFT |
1437                                         WL1273_MUTE_HARD_RIGHT);
1438                 else if (core->mode == WL1273_MODE_RX)
1439                         r = core->write(core,
1440                                         WL1273_MUTE_STATUS_SET, 0x0);
1441                 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1442                         r = core->write(core, WL1273_MUTE, 1);
1443                 else if (core->mode == WL1273_MODE_TX)
1444                         r = core->write(core, WL1273_MUTE, 0);
1445
1446                 mutex_unlock(&core->lock);
1447                 break;
1448
1449         case V4L2_CID_AUDIO_VOLUME:
1450                 if (ctrl->val == 0)
1451                         r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1452                 else
1453                         r =  core->set_volume(core, core->volume);
1454                 break;
1455
1456         case V4L2_CID_TUNE_PREEMPHASIS:
1457                 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1458                 break;
1459
1460         case V4L2_CID_TUNE_POWER_LEVEL:
1461                 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1462                 break;
1463
1464         default:
1465                 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1466                          __func__, ctrl->id);
1467                 break;
1468         }
1469
1470         dev_dbg(radio->dev, "%s\n", __func__);
1471         return r;
1472 }
1473
1474 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1475                                     struct v4l2_audio *audio)
1476 {
1477         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1478
1479         dev_dbg(radio->dev, "%s\n", __func__);
1480
1481         if (audio->index > 1)
1482                 return -EINVAL;
1483
1484         strlcpy(audio->name, "Radio", sizeof(audio->name));
1485         audio->capability = V4L2_AUDCAP_STEREO;
1486
1487         return 0;
1488 }
1489
1490 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1491                                     const struct v4l2_audio *audio)
1492 {
1493         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1494
1495         dev_dbg(radio->dev, "%s\n", __func__);
1496
1497         if (audio->index != 0)
1498                 return -EINVAL;
1499
1500         return 0;
1501 }
1502
1503 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1504 #define WL1273_RDS_SYNCHRONIZED 1
1505
1506 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1507                                     struct v4l2_tuner *tuner)
1508 {
1509         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1510         struct wl1273_core *core = radio->core;
1511         u16 val;
1512         int r;
1513
1514         dev_dbg(radio->dev, "%s\n", __func__);
1515
1516         if (tuner->index > 0)
1517                 return -EINVAL;
1518
1519         strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1520         tuner->type = V4L2_TUNER_RADIO;
1521
1522         tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1523         tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1524
1525         tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1526                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1527                 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1528
1529         if (radio->stereo)
1530                 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1531         else
1532                 tuner->audmode = V4L2_TUNER_MODE_MONO;
1533
1534         if (core->mode != WL1273_MODE_RX)
1535                 return 0;
1536
1537         if (mutex_lock_interruptible(&core->lock))
1538                 return -EINTR;
1539
1540         r = core->read(core, WL1273_STEREO_GET, &val);
1541         if (r)
1542                 goto out;
1543
1544         if (val == 1)
1545                 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1546         else
1547                 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1548
1549         r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1550         if (r)
1551                 goto out;
1552
1553         tuner->signal = (s16) val;
1554         dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1555
1556         tuner->afc = 0;
1557
1558         r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1559         if (r)
1560                 goto out;
1561
1562         if (val == WL1273_RDS_SYNCHRONIZED)
1563                 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1564 out:
1565         mutex_unlock(&core->lock);
1566
1567         return r;
1568 }
1569
1570 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1571                                     const struct v4l2_tuner *tuner)
1572 {
1573         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1574         struct wl1273_core *core = radio->core;
1575         int r = 0;
1576
1577         dev_dbg(radio->dev, "%s\n", __func__);
1578         dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1579         dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1580         dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1581         dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1582         dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1583         dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1584
1585         if (tuner->index > 0)
1586                 return -EINVAL;
1587
1588         if (mutex_lock_interruptible(&core->lock))
1589                 return -EINTR;
1590
1591         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1592         if (r)
1593                 goto out;
1594
1595         if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1596                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1597         else
1598                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1599
1600         if (r)
1601                 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1602
1603         if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1604                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1605                 if (r < 0) {
1606                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1607                                  __func__, r);
1608                         goto out;
1609                 }
1610                 radio->stereo = false;
1611         } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1612                 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1613                 if (r < 0) {
1614                         dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1615                                  __func__, r);
1616                         goto out;
1617                 }
1618                 radio->stereo = true;
1619         } else {
1620                 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1621                          __func__, tuner->audmode);
1622                 r = -EINVAL;
1623                 goto out;
1624         }
1625
1626 out:
1627         mutex_unlock(&core->lock);
1628
1629         return r;
1630 }
1631
1632 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1633                                         struct v4l2_frequency *freq)
1634 {
1635         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1636         struct wl1273_core *core = radio->core;
1637
1638         dev_dbg(radio->dev, "%s\n", __func__);
1639
1640         if (mutex_lock_interruptible(&core->lock))
1641                 return -EINTR;
1642
1643         freq->type = V4L2_TUNER_RADIO;
1644         freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1645
1646         mutex_unlock(&core->lock);
1647
1648         return 0;
1649 }
1650
1651 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1652                                         const struct v4l2_frequency *freq)
1653 {
1654         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1655         struct wl1273_core *core = radio->core;
1656         int r;
1657
1658         dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1659
1660         if (freq->type != V4L2_TUNER_RADIO) {
1661                 dev_dbg(radio->dev,
1662                         "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1663                 return -EINVAL;
1664         }
1665
1666         if (mutex_lock_interruptible(&core->lock))
1667                 return -EINTR;
1668
1669         if (core->mode == WL1273_MODE_RX) {
1670                 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1671
1672                 r = wl1273_fm_set_rx_freq(radio,
1673                                           WL1273_INV_FREQ(freq->frequency));
1674                 if (r)
1675                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1676                                  ": set frequency failed with %d\n", r);
1677         } else {
1678                 r = wl1273_fm_set_tx_freq(radio,
1679                                           WL1273_INV_FREQ(freq->frequency));
1680                 if (r)
1681                         dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1682                                  ": set frequency failed with %d\n", r);
1683         }
1684
1685         mutex_unlock(&core->lock);
1686
1687         dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1688         return r;
1689 }
1690
1691 #define WL1273_DEFAULT_SEEK_LEVEL       7
1692
1693 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1694                                            const struct v4l2_hw_freq_seek *seek)
1695 {
1696         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1697         struct wl1273_core *core = radio->core;
1698         int r;
1699
1700         dev_dbg(radio->dev, "%s\n", __func__);
1701
1702         if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1703                 return -EINVAL;
1704
1705         if (file->f_flags & O_NONBLOCK)
1706                 return -EWOULDBLOCK;
1707
1708         if (mutex_lock_interruptible(&core->lock))
1709                 return -EINTR;
1710
1711         r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1712         if (r)
1713                 goto out;
1714
1715         r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1716         if (r)
1717                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1718
1719         r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1720                                WL1273_DEFAULT_SEEK_LEVEL);
1721         if (r)
1722                 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1723
1724 out:
1725         mutex_unlock(&core->lock);
1726         return r;
1727 }
1728
1729 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1730                                         const struct v4l2_modulator *modulator)
1731 {
1732         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1733         struct wl1273_core *core = radio->core;
1734         int r = 0;
1735
1736         dev_dbg(radio->dev, "%s\n", __func__);
1737
1738         if (modulator->index > 0)
1739                 return -EINVAL;
1740
1741         if (mutex_lock_interruptible(&core->lock))
1742                 return -EINTR;
1743
1744         r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1745         if (r)
1746                 goto out;
1747
1748         if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1749                 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1750         else
1751                 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1752
1753         if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1754                 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1755         else
1756                 r = core->write(core, WL1273_MONO_SET,
1757                                 WL1273_RX_STEREO);
1758         if (r < 0)
1759                 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1760                          "MONO_SET fails: %d\n", r);
1761 out:
1762         mutex_unlock(&core->lock);
1763
1764         return r;
1765 }
1766
1767 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1768                                         struct v4l2_modulator *modulator)
1769 {
1770         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1771         struct wl1273_core *core = radio->core;
1772         u16 val;
1773         int r;
1774
1775         dev_dbg(radio->dev, "%s\n", __func__);
1776
1777         strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1778                 sizeof(modulator->name));
1779
1780         modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1781         modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1782
1783         modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1784                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1785
1786         if (core->mode != WL1273_MODE_TX)
1787                 return 0;
1788
1789         if (mutex_lock_interruptible(&core->lock))
1790                 return -EINTR;
1791
1792         r = core->read(core, WL1273_MONO_SET, &val);
1793         if (r)
1794                 goto out;
1795
1796         if (val == WL1273_TX_STEREO)
1797                 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1798         else
1799                 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1800
1801         if (radio->rds_on)
1802                 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1803 out:
1804         mutex_unlock(&core->lock);
1805
1806         return 0;
1807 }
1808
1809 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1810 {
1811         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1812         struct wl1273_core *core = radio->core;
1813         struct device *dev = radio->dev;
1814         u16 val;
1815         int r;
1816
1817         dev_info(dev, DRIVER_DESC);
1818
1819         if (core->mode == WL1273_MODE_OFF) {
1820                 dev_info(dev, "Mode: Off\n");
1821                 return 0;
1822         }
1823
1824         if (core->mode == WL1273_MODE_SUSPENDED) {
1825                 dev_info(dev, "Mode: Suspended\n");
1826                 return 0;
1827         }
1828
1829         r = core->read(core, WL1273_ASIC_ID_GET, &val);
1830         if (r)
1831                 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1832         else
1833                 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1834
1835         r = core->read(core, WL1273_ASIC_VER_GET, &val);
1836         if (r)
1837                 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1838         else
1839                 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1840
1841         r = core->read(core, WL1273_FIRM_VER_GET, &val);
1842         if (r)
1843                 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1844         else
1845                 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1846
1847         r = core->read(core, WL1273_BAND_SET, &val);
1848         if (r)
1849                 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1850         else
1851                 dev_info(dev, "BAND: %d\n", val);
1852
1853         if (core->mode == WL1273_MODE_TX) {
1854                 r = core->read(core, WL1273_PUPD_SET, &val);
1855                 if (r)
1856                         dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1857                 else
1858                         dev_info(dev, "PUPD: 0x%04x\n", val);
1859
1860                 r = core->read(core, WL1273_CHANL_SET, &val);
1861                 if (r)
1862                         dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1863                 else
1864                         dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1865         } else if (core->mode == WL1273_MODE_RX) {
1866                 int bf = radio->rangelow;
1867
1868                 r = core->read(core, WL1273_FREQ_SET, &val);
1869                 if (r)
1870                         dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1871                 else
1872                         dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1873
1874                 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1875                 if (r)
1876                         dev_err(dev, "%s: Get MOST_MODE fails.\n",
1877                                 __func__);
1878                 else if (val == 0)
1879                         dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1880                 else if (val == 1)
1881                         dev_info(dev, "MOST_MODE: Force mono output\n");
1882                 else
1883                         dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1884
1885                 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1886                 if (r)
1887                         dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1888                 else if (val == 0)
1889                         dev_info(dev,
1890                                  "MOST_BLEND: Switched blend & hysteresis.\n");
1891                 else if (val == 1)
1892                         dev_info(dev, "MOST_BLEND: Soft blend.\n");
1893                 else
1894                         dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1895
1896                 r = core->read(core, WL1273_STEREO_GET, &val);
1897                 if (r)
1898                         dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1899                 else if (val == 0)
1900                         dev_info(dev, "STEREO: Not detected\n");
1901                 else if (val == 1)
1902                         dev_info(dev, "STEREO: Detected\n");
1903                 else
1904                         dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1905
1906                 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1907                 if (r)
1908                         dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1909                 else
1910                         dev_info(dev, "RX signal strength: %d\n", (s16) val);
1911
1912                 r = core->read(core, WL1273_POWER_SET, &val);
1913                 if (r)
1914                         dev_err(dev, "%s: Get POWER fails.\n", __func__);
1915                 else
1916                         dev_info(dev, "POWER: 0x%04x\n", val);
1917
1918                 r = core->read(core, WL1273_INT_MASK_SET, &val);
1919                 if (r)
1920                         dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1921                 else
1922                         dev_info(dev, "INT_MASK: 0x%04x\n", val);
1923
1924                 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1925                 if (r)
1926                         dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1927                                 __func__);
1928                 else if (val == 0)
1929                         dev_info(dev, "RDS_SYNC: Not synchronized\n");
1930
1931                 else if (val == 1)
1932                         dev_info(dev, "RDS_SYNC: Synchronized\n");
1933                 else
1934                         dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1935
1936                 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1937                 if (r)
1938                         dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1939                                 __func__);
1940                 else
1941                         dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1942
1943                 r = core->read(core, WL1273_VOLUME_SET, &val);
1944                 if (r)
1945                         dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1946                 else
1947                         dev_info(dev, "VOLUME: 0x%04x\n", val);
1948         }
1949
1950         return 0;
1951 }
1952
1953 static void wl1273_vdev_release(struct video_device *dev)
1954 {
1955 }
1956
1957 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1958         .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1959         .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1960 };
1961
1962 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1963         .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1964         .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1965         .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1966         .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1967         .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1968         .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1969         .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1970         .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1971         .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1972         .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1973         .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1974         .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1975         .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1976 };
1977
1978 static struct video_device wl1273_viddev_template = {
1979         .fops                   = &wl1273_fops,
1980         .ioctl_ops              = &wl1273_ioctl_ops,
1981         .name                   = WL1273_FM_DRIVER_NAME,
1982         .release                = wl1273_vdev_release,
1983         .vfl_dir                = VFL_DIR_TX,
1984 };
1985
1986 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1987 {
1988         struct wl1273_device *radio = platform_get_drvdata(pdev);
1989         struct wl1273_core *core = radio->core;
1990
1991         dev_info(&pdev->dev, "%s.\n", __func__);
1992
1993         free_irq(core->client->irq, radio);
1994         core->pdata->free_resources();
1995
1996         v4l2_ctrl_handler_free(&radio->ctrl_handler);
1997         video_unregister_device(&radio->videodev);
1998         v4l2_device_unregister(&radio->v4l2dev);
1999
2000         return 0;
2001 }
2002
2003 static int wl1273_fm_radio_probe(struct platform_device *pdev)
2004 {
2005         struct wl1273_core **core = pdev->dev.platform_data;
2006         struct wl1273_device *radio;
2007         struct v4l2_ctrl *ctrl;
2008         int r = 0;
2009
2010         pr_debug("%s\n", __func__);
2011
2012         if (!core) {
2013                 dev_err(&pdev->dev, "No platform data.\n");
2014                 r = -EINVAL;
2015                 goto pdata_err;
2016         }
2017
2018         radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2019         if (!radio) {
2020                 r = -ENOMEM;
2021                 goto pdata_err;
2022         }
2023
2024         /* RDS buffer allocation */
2025         radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2026         radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2027         if (!radio->buffer) {
2028                 pr_err("Cannot allocate memory for RDS buffer.\n");
2029                 r = -ENOMEM;
2030                 goto pdata_err;
2031         }
2032
2033         radio->core = *core;
2034         radio->irq_flags = WL1273_IRQ_MASK;
2035         radio->dev = &radio->core->client->dev;
2036         radio->rds_on = false;
2037         radio->core->mode = WL1273_MODE_OFF;
2038         radio->tx_power = 118;
2039         radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2040         radio->band = WL1273_BAND_OTHER;
2041         radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2042         radio->core->channel_number = 2;
2043         radio->core->volume = WL1273_DEFAULT_VOLUME;
2044         radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2045         radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2046         radio->rangelow = WL1273_BAND_OTHER_LOW;
2047         radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2048         radio->stereo = true;
2049         radio->bus_type = "I2C";
2050
2051         if (radio->core->pdata->request_resources) {
2052                 r = radio->core->pdata->request_resources(radio->core->client);
2053                 if (r) {
2054                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2055                                 ": Cannot get platform data\n");
2056                         goto pdata_err;
2057                 }
2058
2059                 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2060
2061                 r = request_threaded_irq(radio->core->client->irq, NULL,
2062                                          wl1273_fm_irq_thread_handler,
2063                                          IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2064                                          "wl1273-fm", radio);
2065                 if (r < 0) {
2066                         dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2067                                 ": Unable to register IRQ handler: %d\n", r);
2068                         goto err_request_irq;
2069                 }
2070         } else {
2071                 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2072                         " not configured");
2073                 r = -EINVAL;
2074                 goto pdata_err;
2075         }
2076
2077         init_completion(&radio->busy);
2078         init_waitqueue_head(&radio->read_queue);
2079
2080         radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2081         if (!radio->write_buf) {
2082                 r = -ENOMEM;
2083                 goto write_buf_err;
2084         }
2085
2086         radio->dev = &pdev->dev;
2087         radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2088         radio->rds_users = 0;
2089
2090         r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2091         if (r) {
2092                 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2093                 goto write_buf_err;
2094         }
2095
2096         /* V4L2 configuration */
2097         radio->videodev = wl1273_viddev_template;
2098
2099         radio->videodev.v4l2_dev = &radio->v4l2dev;
2100
2101         v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2102
2103         /* add in ascending ID order */
2104         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2105                           V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2106                           WL1273_DEFAULT_VOLUME);
2107
2108         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2109                           V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2110
2111         v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2112                                V4L2_CID_TUNE_PREEMPHASIS,
2113                                V4L2_PREEMPHASIS_75_uS, 0x03,
2114                                V4L2_PREEMPHASIS_50_uS);
2115
2116         v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2117                           V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2118
2119         ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2120                                  V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2121                                  0, 255, 1, 255);
2122         if (ctrl)
2123                 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2124
2125         if (radio->ctrl_handler.error) {
2126                 r = radio->ctrl_handler.error;
2127                 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2128                 goto handler_init_err;
2129         }
2130
2131         video_set_drvdata(&radio->videodev, radio);
2132         platform_set_drvdata(pdev, radio);
2133
2134         /* register video device */
2135         r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2136         if (r) {
2137                 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2138                         ": Could not register video device\n");
2139                 goto handler_init_err;
2140         }
2141
2142         return 0;
2143
2144 handler_init_err:
2145         v4l2_ctrl_handler_free(&radio->ctrl_handler);
2146         v4l2_device_unregister(&radio->v4l2dev);
2147 write_buf_err:
2148         free_irq(radio->core->client->irq, radio);
2149 err_request_irq:
2150         radio->core->pdata->free_resources();
2151 pdata_err:
2152         return r;
2153 }
2154
2155 static struct platform_driver wl1273_fm_radio_driver = {
2156         .probe          = wl1273_fm_radio_probe,
2157         .remove         = wl1273_fm_radio_remove,
2158         .driver         = {
2159                 .name   = "wl1273_fm_radio",
2160         },
2161 };
2162
2163 module_platform_driver(wl1273_fm_radio_driver);
2164
2165 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2166 MODULE_DESCRIPTION(DRIVER_DESC);
2167 MODULE_LICENSE("GPL");
2168 MODULE_ALIAS("platform:wl1273_fm_radio");