linux/drivers/media/radio/radio-wl1273.c
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   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 */
  51static int radio_nr;
  52module_param(radio_nr, int, 0);
  53MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
  54
  55struct 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 */
 103static unsigned int rds_buf = 100;
 104module_param(rds_buf, uint, 0);
 105MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
 106
 107static 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
 143static 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
 230static 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
 339out:
 340        core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 341        complete(&radio->busy);
 342
 343        return IRQ_HANDLED;
 344}
 345
 346static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
 347{
 348        struct wl1273_core *core = radio->core;
 349        int r = 0;
 350
 351        if (freq < WL1273_BAND_TX_LOW) {
 352                dev_err(radio->dev,
 353                        "Frequency out of range: %d < %d\n", freq,
 354                        WL1273_BAND_TX_LOW);
 355                return -ERANGE;
 356        }
 357
 358        if (freq > WL1273_BAND_TX_HIGH) {
 359                dev_err(radio->dev,
 360                        "Frequency out of range: %d > %d\n", freq,
 361                        WL1273_BAND_TX_HIGH);
 362                return -ERANGE;
 363        }
 364
 365        /*
 366         *  The driver works better with this sleep,
 367         *  the documentation doesn't mention it.
 368         */
 369        usleep_range(5000, 10000);
 370
 371        dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
 372
 373        /* Set the current tx channel */
 374        r = core->write(core, WL1273_CHANL_SET, freq / 10);
 375        if (r)
 376                return r;
 377
 378        INIT_COMPLETION(radio->busy);
 379
 380        /* wait for the FR IRQ */
 381        r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 382        if (!r)
 383                return -ETIMEDOUT;
 384
 385        dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r);
 386
 387        /* Enable the output power */
 388        r = core->write(core, WL1273_POWER_ENB_SET, 1);
 389        if (r)
 390                return r;
 391
 392        INIT_COMPLETION(radio->busy);
 393
 394        /* wait for the POWER_ENB IRQ */
 395        r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 396        if (!r)
 397                return -ETIMEDOUT;
 398
 399        radio->tx_frequency = freq;
 400        dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r);
 401
 402        return  0;
 403}
 404
 405static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
 406{
 407        struct wl1273_core *core = radio->core;
 408        int r, f;
 409
 410        if (freq < radio->rangelow) {
 411                dev_err(radio->dev,
 412                        "Frequency out of range: %d < %d\n", freq,
 413                        radio->rangelow);
 414                r = -ERANGE;
 415                goto err;
 416        }
 417
 418        if (freq > radio->rangehigh) {
 419                dev_err(radio->dev,
 420                        "Frequency out of range: %d > %d\n", freq,
 421                        radio->rangehigh);
 422                r = -ERANGE;
 423                goto err;
 424        }
 425
 426        dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
 427
 428        core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 429
 430        if (radio->band == WL1273_BAND_JAPAN)
 431                f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
 432        else
 433                f = (freq - WL1273_BAND_OTHER_LOW) / 50;
 434
 435        r = core->write(core, WL1273_FREQ_SET, f);
 436        if (r) {
 437                dev_err(radio->dev, "FREQ_SET fails\n");
 438                goto err;
 439        }
 440
 441        r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
 442        if (r) {
 443                dev_err(radio->dev, "TUNER_MODE_SET fails\n");
 444                goto err;
 445        }
 446
 447        INIT_COMPLETION(radio->busy);
 448
 449        r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
 450        if (!r) {
 451                dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
 452                return -ETIMEDOUT;
 453        }
 454
 455        radio->rd_index = 0;
 456        radio->wr_index = 0;
 457        radio->rx_frequency = freq;
 458        return 0;
 459err:
 460        return r;
 461}
 462
 463static int wl1273_fm_get_freq(struct wl1273_device *radio)
 464{
 465        struct wl1273_core *core = radio->core;
 466        unsigned int freq;
 467        u16 f;
 468        int r;
 469
 470        if (core->mode == WL1273_MODE_RX) {
 471                r = core->read(core, WL1273_FREQ_SET, &f);
 472                if (r)
 473                        return r;
 474
 475                dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
 476                if (radio->band == WL1273_BAND_JAPAN)
 477                        freq = WL1273_BAND_JAPAN_LOW + 50 * f;
 478                else
 479                        freq = WL1273_BAND_OTHER_LOW + 50 * f;
 480        } else {
 481                r = core->read(core, WL1273_CHANL_SET, &f);
 482                if (r)
 483                        return r;
 484
 485                freq = f * 10;
 486        }
 487
 488        return freq;
 489}
 490
 491/**
 492 * wl1273_fm_upload_firmware_patch() -  Upload the firmware.
 493 * @radio:                              A pointer to the device struct.
 494 *
 495 * The firmware file consists of arrays of bytes where the first byte
 496 * gives the array length. The first byte in the file gives the
 497 * number of these arrays.
 498 */
 499static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
 500{
 501        struct wl1273_core *core = radio->core;
 502        unsigned int packet_num;
 503        const struct firmware *fw_p;
 504        const char *fw_name = "radio-wl1273-fw.bin";
 505        struct device *dev = radio->dev;
 506        __u8 *ptr;
 507        int r;
 508
 509        dev_dbg(dev, "%s:\n", __func__);
 510
 511        /*
 512         * Uploading the firmware patch is not always necessary,
 513         * so we only print an info message.
 514         */
 515        if (request_firmware(&fw_p, fw_name, dev)) {
 516                dev_info(dev, "%s - %s not found\n", __func__, fw_name);
 517
 518                return 0;
 519        }
 520
 521        ptr = (__u8 *) fw_p->data;
 522        packet_num = ptr[0];
 523        dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
 524
 525        r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
 526        if (r) {
 527                dev_err(dev, "FW upload error: %d\n", r);
 528                goto out;
 529        }
 530
 531        /* ignore possible error here */
 532        core->write(core, WL1273_RESET, 0);
 533
 534        dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
 535out:
 536        release_firmware(fw_p);
 537        return r;
 538}
 539
 540static int wl1273_fm_stop(struct wl1273_device *radio)
 541{
 542        struct wl1273_core *core = radio->core;
 543
 544        if (core->mode == WL1273_MODE_RX) {
 545                int r = core->write(core, WL1273_POWER_SET,
 546                                    WL1273_POWER_SET_OFF);
 547                if (r)
 548                        dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
 549                                __func__, r);
 550        } else if (core->mode == WL1273_MODE_TX) {
 551                int r = core->write(core, WL1273_PUPD_SET,
 552                                    WL1273_PUPD_SET_OFF);
 553                if (r)
 554                        dev_err(radio->dev,
 555                                "%s: PUPD_SET fails: %d\n", __func__, r);
 556        }
 557
 558        if (core->pdata->disable) {
 559                core->pdata->disable();
 560                dev_dbg(radio->dev, "Back to reset\n");
 561        }
 562
 563        return 0;
 564}
 565
 566static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
 567{
 568        struct wl1273_core *core = radio->core;
 569        struct wl1273_fm_platform_data *pdata = core->pdata;
 570        struct device *dev = radio->dev;
 571        int r = -EINVAL;
 572
 573        if (pdata->enable && core->mode == WL1273_MODE_OFF) {
 574                dev_dbg(radio->dev, "Out of reset\n");
 575
 576                pdata->enable();
 577                msleep(250);
 578        }
 579
 580        if (new_mode == WL1273_MODE_RX) {
 581                u16 val = WL1273_POWER_SET_FM;
 582
 583                if (radio->rds_on)
 584                        val |= WL1273_POWER_SET_RDS;
 585
 586                /* If this fails try again */
 587                r = core->write(core, WL1273_POWER_SET, val);
 588                if (r) {
 589                        msleep(100);
 590
 591                        r = core->write(core, WL1273_POWER_SET, val);
 592                        if (r) {
 593                                dev_err(dev, "%s: POWER_SET fails\n", __func__);
 594                                goto fail;
 595                        }
 596                }
 597
 598                /* rds buffer configuration */
 599                radio->wr_index = 0;
 600                radio->rd_index = 0;
 601
 602        } else if (new_mode == WL1273_MODE_TX) {
 603                /* If this fails try again once */
 604                r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
 605                if (r) {
 606                        msleep(100);
 607                        r = core->write(core, WL1273_PUPD_SET,
 608                                        WL1273_PUPD_SET_ON);
 609                        if (r) {
 610                                dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 611                                goto fail;
 612                        }
 613                }
 614
 615                if (radio->rds_on)
 616                        r = core->write(core, WL1273_RDS_DATA_ENB, 1);
 617                else
 618                        r = core->write(core, WL1273_RDS_DATA_ENB, 0);
 619        } else {
 620                dev_warn(dev, "%s: Illegal mode.\n", __func__);
 621        }
 622
 623        if (core->mode == WL1273_MODE_OFF) {
 624                r = wl1273_fm_upload_firmware_patch(radio);
 625                if (r)
 626                        dev_warn(dev, "Firmware upload failed.\n");
 627
 628                /*
 629                 * Sometimes the chip is in a wrong power state at this point.
 630                 * So we set the power once again.
 631                 */
 632                if (new_mode == WL1273_MODE_RX) {
 633                        u16 val = WL1273_POWER_SET_FM;
 634
 635                        if (radio->rds_on)
 636                                val |= WL1273_POWER_SET_RDS;
 637
 638                        r = core->write(core, WL1273_POWER_SET, val);
 639                        if (r) {
 640                                dev_err(dev, "%s: POWER_SET fails\n", __func__);
 641                                goto fail;
 642                        }
 643                } else if (new_mode == WL1273_MODE_TX) {
 644                        r = core->write(core, WL1273_PUPD_SET,
 645                                        WL1273_PUPD_SET_ON);
 646                        if (r) {
 647                                dev_err(dev, "%s: PUPD_SET fails\n", __func__);
 648                                goto fail;
 649                        }
 650                }
 651        }
 652
 653        return 0;
 654fail:
 655        if (pdata->disable)
 656                pdata->disable();
 657
 658        dev_dbg(dev, "%s: return: %d\n", __func__, r);
 659        return r;
 660}
 661
 662static int wl1273_fm_suspend(struct wl1273_device *radio)
 663{
 664        struct wl1273_core *core = radio->core;
 665        int r = 0;
 666
 667        /* Cannot go from OFF to SUSPENDED */
 668        if (core->mode == WL1273_MODE_RX)
 669                r = core->write(core, WL1273_POWER_SET,
 670                                WL1273_POWER_SET_RETENTION);
 671        else if (core->mode == WL1273_MODE_TX)
 672                r = core->write(core, WL1273_PUPD_SET,
 673                                WL1273_PUPD_SET_RETENTION);
 674        else
 675                r = -EINVAL;
 676
 677        if (r) {
 678                dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
 679                goto out;
 680        }
 681
 682out:
 683        return r;
 684}
 685
 686static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
 687{
 688        struct wl1273_core *core = radio->core;
 689        struct device *dev = radio->dev;
 690        int old_mode;
 691        int r;
 692
 693        dev_dbg(dev, "%s\n", __func__);
 694        dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
 695
 696        old_mode = core->mode;
 697        if (mode & radio->forbidden) {
 698                r = -EPERM;
 699                goto out;
 700        }
 701
 702        switch (mode) {
 703        case WL1273_MODE_RX:
 704        case WL1273_MODE_TX:
 705                r = wl1273_fm_start(radio, mode);
 706                if (r) {
 707                        dev_err(dev, "%s: Cannot start.\n", __func__);
 708                        wl1273_fm_stop(radio);
 709                        goto out;
 710                }
 711
 712                core->mode = mode;
 713                r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 714                if (r) {
 715                        dev_err(dev, "INT_MASK_SET fails.\n");
 716                        goto out;
 717                }
 718
 719                /* remember previous settings */
 720                if (mode == WL1273_MODE_RX) {
 721                        r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 722                        if (r) {
 723                                dev_err(dev, "set freq fails: %d.\n", r);
 724                                goto out;
 725                        }
 726
 727                        r = core->set_volume(core, core->volume);
 728                        if (r) {
 729                                dev_err(dev, "set volume fails: %d.\n", r);
 730                                goto out;
 731                        }
 732
 733                        dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
 734                                core->volume);
 735                } else {
 736                        r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
 737                        if (r) {
 738                                dev_err(dev, "set freq fails: %d.\n", r);
 739                                goto out;
 740                        }
 741                }
 742
 743                dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
 744
 745                r = core->set_audio(core, core->audio_mode);
 746                if (r)
 747                        dev_err(dev, "Cannot set audio mode.\n");
 748                break;
 749
 750        case WL1273_MODE_OFF:
 751                r = wl1273_fm_stop(radio);
 752                if (r)
 753                        dev_err(dev, "%s: Off fails: %d\n", __func__, r);
 754                else
 755                        core->mode = WL1273_MODE_OFF;
 756
 757                break;
 758
 759        case WL1273_MODE_SUSPENDED:
 760                r = wl1273_fm_suspend(radio);
 761                if (r)
 762                        dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
 763                else
 764                        core->mode = WL1273_MODE_SUSPENDED;
 765
 766                break;
 767
 768        default:
 769                dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
 770                r = -EINVAL;
 771                break;
 772        }
 773out:
 774        if (r)
 775                core->mode = old_mode;
 776
 777        return r;
 778}
 779
 780static int wl1273_fm_set_seek(struct wl1273_device *radio,
 781                              unsigned int wrap_around,
 782                              unsigned int seek_upward,
 783                              int level)
 784{
 785        struct wl1273_core *core = radio->core;
 786        int r = 0;
 787        unsigned int dir = (seek_upward == 0) ? 0 : 1;
 788        unsigned int f;
 789
 790        f = radio->rx_frequency;
 791        dev_dbg(radio->dev, "rx_frequency: %d\n", f);
 792
 793        if (dir && f + radio->spacing <= radio->rangehigh)
 794                r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
 795        else if (dir && wrap_around)
 796                r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
 797        else if (f - radio->spacing >= radio->rangelow)
 798                r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
 799        else if (wrap_around)
 800                r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
 801
 802        if (r)
 803                goto out;
 804
 805        if (level < SCHAR_MIN || level > SCHAR_MAX)
 806                return -EINVAL;
 807
 808        INIT_COMPLETION(radio->busy);
 809        dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 810
 811        r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 812        if (r)
 813                goto out;
 814
 815        dev_dbg(radio->dev, "%s\n", __func__);
 816
 817        r = core->write(core, WL1273_SEARCH_LVL_SET, level);
 818        if (r)
 819                goto out;
 820
 821        r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
 822        if (r)
 823                goto out;
 824
 825        r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 826        if (r)
 827                goto out;
 828
 829        wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 830        if (!(radio->irq_received & WL1273_BL_EVENT))
 831                goto out;
 832
 833        radio->irq_received &= ~WL1273_BL_EVENT;
 834
 835        if (!wrap_around)
 836                goto out;
 837
 838        /* Wrap around */
 839        dev_dbg(radio->dev, "Wrap around in HW seek.\n");
 840
 841        if (seek_upward)
 842                f = radio->rangelow;
 843        else
 844                f = radio->rangehigh;
 845
 846        r = wl1273_fm_set_rx_freq(radio, f);
 847        if (r)
 848                goto out;
 849
 850        INIT_COMPLETION(radio->busy);
 851        dev_dbg(radio->dev, "%s: BUSY\n", __func__);
 852
 853        r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
 854        if (r)
 855                goto out;
 856
 857        wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
 858out:
 859        dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
 860        return r;
 861}
 862
 863/**
 864 * wl1273_fm_get_tx_ctune() -   Get the TX tuning capacitor value.
 865 * @radio:                      A pointer to the device struct.
 866 */
 867static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
 868{
 869        struct wl1273_core *core = radio->core;
 870        struct device *dev = radio->dev;
 871        u16 val;
 872        int r;
 873
 874        if (core->mode == WL1273_MODE_OFF ||
 875            core->mode == WL1273_MODE_SUSPENDED)
 876                return -EPERM;
 877
 878        r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
 879        if (r) {
 880                dev_err(dev, "%s: read error: %d\n", __func__, r);
 881                goto out;
 882        }
 883
 884out:
 885        return val;
 886}
 887
 888/**
 889 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
 890 * @radio:                       A pointer to the device struct.
 891 * @preemphasis:                 The new pre-amphasis value.
 892 *
 893 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
 894 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
 895 */
 896static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
 897                                     unsigned int preemphasis)
 898{
 899        struct wl1273_core *core = radio->core;
 900        int r;
 901        u16 em;
 902
 903        if (core->mode == WL1273_MODE_OFF ||
 904            core->mode == WL1273_MODE_SUSPENDED)
 905                return -EPERM;
 906
 907        mutex_lock(&core->lock);
 908
 909        switch (preemphasis) {
 910        case V4L2_PREEMPHASIS_DISABLED:
 911                em = 1;
 912                break;
 913        case V4L2_PREEMPHASIS_50_uS:
 914                em = 0;
 915                break;
 916        case V4L2_PREEMPHASIS_75_uS:
 917                em = 2;
 918                break;
 919        default:
 920                r = -EINVAL;
 921                goto out;
 922        }
 923
 924        r = core->write(core, WL1273_PREMPH_SET, em);
 925        if (r)
 926                goto out;
 927
 928        radio->preemphasis = preemphasis;
 929
 930out:
 931        mutex_unlock(&core->lock);
 932        return r;
 933}
 934
 935static int wl1273_fm_rds_on(struct wl1273_device *radio)
 936{
 937        struct wl1273_core *core = radio->core;
 938        int r;
 939
 940        dev_dbg(radio->dev, "%s\n", __func__);
 941        if (radio->rds_on)
 942                return 0;
 943
 944        r = core->write(core, WL1273_POWER_SET,
 945                        WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
 946        if (r)
 947                goto out;
 948
 949        r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 950        if (r)
 951                dev_err(radio->dev, "set freq fails: %d.\n", r);
 952out:
 953        return r;
 954}
 955
 956static int wl1273_fm_rds_off(struct wl1273_device *radio)
 957{
 958        struct wl1273_core *core = radio->core;
 959        int r;
 960
 961        if (!radio->rds_on)
 962                return 0;
 963
 964        radio->irq_flags &= ~WL1273_RDS_EVENT;
 965
 966        r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
 967        if (r)
 968                goto out;
 969
 970        /* Service pending read */
 971        wake_up_interruptible(&radio->read_queue);
 972
 973        dev_dbg(radio->dev, "%s\n", __func__);
 974
 975        r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
 976        if (r)
 977                goto out;
 978
 979        r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
 980        if (r)
 981                dev_err(radio->dev, "set freq fails: %d.\n", r);
 982out:
 983        dev_dbg(radio->dev, "%s: exiting...\n", __func__);
 984
 985        return r;
 986}
 987
 988static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
 989{
 990        int r = 0;
 991        struct wl1273_core *core = radio->core;
 992
 993        if (core->mode == WL1273_MODE_OFF ||
 994            core->mode == WL1273_MODE_SUSPENDED)
 995                return -EPERM;
 996
 997        if (new_mode == WL1273_RDS_RESET) {
 998                r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
 999                return r;
1000        }
1001
1002        if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1003                r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1004        } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1005                r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1006        } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1007                r = wl1273_fm_rds_off(radio);
1008        } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1009                r = wl1273_fm_rds_on(radio);
1010        } else {
1011                dev_err(radio->dev, "%s: Unknown mode: %d\n",
1012                        __func__, new_mode);
1013                r = -EINVAL;
1014        }
1015
1016        if (!r)
1017                radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1018
1019        return r;
1020}
1021
1022static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1023                                    size_t count, loff_t *ppos)
1024{
1025        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1026        struct wl1273_core *core = radio->core;
1027        u16 val;
1028        int r;
1029
1030        dev_dbg(radio->dev, "%s\n", __func__);
1031
1032        if (core->mode != WL1273_MODE_TX)
1033                return count;
1034
1035        if (radio->rds_users == 0) {
1036                dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1037                return 0;
1038        }
1039
1040        if (mutex_lock_interruptible(&core->lock))
1041                return -EINTR;
1042        /*
1043         * Multiple processes can open the device, but only
1044         * one gets to write to it.
1045         */
1046        if (radio->owner && radio->owner != file) {
1047                r = -EBUSY;
1048                goto out;
1049        }
1050        radio->owner = file;
1051
1052        /* Manual Mode */
1053        if (count > 255)
1054                val = 255;
1055        else
1056                val = count;
1057
1058        core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1059
1060        if (copy_from_user(radio->write_buf + 1, buf, val)) {
1061                r = -EFAULT;
1062                goto out;
1063        }
1064
1065        dev_dbg(radio->dev, "Count: %d\n", val);
1066        dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1067
1068        radio->write_buf[0] = WL1273_RDS_DATA_SET;
1069        core->write_data(core, radio->write_buf, val + 1);
1070
1071        r = val;
1072out:
1073        mutex_unlock(&core->lock);
1074
1075        return r;
1076}
1077
1078static unsigned int wl1273_fm_fops_poll(struct file *file,
1079                                        struct poll_table_struct *pts)
1080{
1081        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1082        struct wl1273_core *core = radio->core;
1083
1084        if (radio->owner && radio->owner != file)
1085                return -EBUSY;
1086
1087        radio->owner = file;
1088
1089        if (core->mode == WL1273_MODE_RX) {
1090                poll_wait(file, &radio->read_queue, pts);
1091
1092                if (radio->rd_index != radio->wr_index)
1093                        return POLLIN | POLLRDNORM;
1094
1095        } else if (core->mode == WL1273_MODE_TX) {
1096                return POLLOUT | POLLWRNORM;
1097        }
1098
1099        return 0;
1100}
1101
1102static int wl1273_fm_fops_open(struct file *file)
1103{
1104        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1105        struct wl1273_core *core = radio->core;
1106        int r = 0;
1107
1108        dev_dbg(radio->dev, "%s\n", __func__);
1109
1110        if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1111            !radio->rds_users) {
1112                dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1113
1114                if (mutex_lock_interruptible(&core->lock))
1115                        return -EINTR;
1116
1117                radio->irq_flags |= WL1273_RDS_EVENT;
1118
1119                r = core->write(core, WL1273_INT_MASK_SET,
1120                                radio->irq_flags);
1121                if (r) {
1122                        mutex_unlock(&core->lock);
1123                        goto out;
1124                }
1125
1126                radio->rds_users++;
1127
1128                mutex_unlock(&core->lock);
1129        }
1130out:
1131        return r;
1132}
1133
1134static int wl1273_fm_fops_release(struct file *file)
1135{
1136        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1137        struct wl1273_core *core = radio->core;
1138        int r = 0;
1139
1140        dev_dbg(radio->dev, "%s\n", __func__);
1141
1142        if (radio->rds_users > 0) {
1143                radio->rds_users--;
1144                if (radio->rds_users == 0) {
1145                        if (mutex_lock_interruptible(&core->lock))
1146                                return -EINTR;
1147
1148                        radio->irq_flags &= ~WL1273_RDS_EVENT;
1149
1150                        if (core->mode == WL1273_MODE_RX) {
1151                                r = core->write(core,
1152                                                WL1273_INT_MASK_SET,
1153                                                radio->irq_flags);
1154                                if (r) {
1155                                        mutex_unlock(&core->lock);
1156                                        goto out;
1157                                }
1158                        }
1159                        mutex_unlock(&core->lock);
1160                }
1161        }
1162
1163        if (file == radio->owner)
1164                radio->owner = NULL;
1165out:
1166        return r;
1167}
1168
1169static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1170                                   size_t count, loff_t *ppos)
1171{
1172        int r = 0;
1173        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1174        struct wl1273_core *core = radio->core;
1175        unsigned int block_count = 0;
1176        u16 val;
1177
1178        dev_dbg(radio->dev, "%s\n", __func__);
1179
1180        if (core->mode != WL1273_MODE_RX)
1181                return 0;
1182
1183        if (radio->rds_users == 0) {
1184                dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1185                return 0;
1186        }
1187
1188        if (mutex_lock_interruptible(&core->lock))
1189                return -EINTR;
1190
1191        /*
1192         * Multiple processes can open the device, but only
1193         * one at a time gets read access.
1194         */
1195        if (radio->owner && radio->owner != file) {
1196                r = -EBUSY;
1197                goto out;
1198        }
1199        radio->owner = file;
1200
1201        r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1202        if (r) {
1203                dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1204                goto out;
1205        } else if (val == 0) {
1206                dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1207                r = -ENODATA;
1208                goto out;
1209        }
1210
1211        /* block if no new data available */
1212        while (radio->wr_index == radio->rd_index) {
1213                if (file->f_flags & O_NONBLOCK) {
1214                        r = -EWOULDBLOCK;
1215                        goto out;
1216                }
1217
1218                dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1219                if (wait_event_interruptible(radio->read_queue,
1220                                             radio->wr_index !=
1221                                             radio->rd_index) < 0) {
1222                        r = -EINTR;
1223                        goto out;
1224                }
1225        }
1226
1227        /* calculate block count from byte count */
1228        count /= RDS_BLOCK_SIZE;
1229
1230        /* copy RDS blocks from the internal buffer and to user buffer */
1231        while (block_count < count) {
1232                if (radio->rd_index == radio->wr_index)
1233                        break;
1234
1235                /* always transfer complete RDS blocks */
1236                if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1237                                 RDS_BLOCK_SIZE))
1238                        break;
1239
1240                /* increment and wrap the read pointer */
1241                radio->rd_index += RDS_BLOCK_SIZE;
1242                if (radio->rd_index >= radio->buf_size)
1243                        radio->rd_index = 0;
1244
1245                /* increment counters */
1246                block_count++;
1247                buf += RDS_BLOCK_SIZE;
1248                r += RDS_BLOCK_SIZE;
1249        }
1250
1251out:
1252        dev_dbg(radio->dev, "%s: exit\n", __func__);
1253        mutex_unlock(&core->lock);
1254
1255        return r;
1256}
1257
1258static const struct v4l2_file_operations wl1273_fops = {
1259        .owner          = THIS_MODULE,
1260        .read           = wl1273_fm_fops_read,
1261        .write          = wl1273_fm_fops_write,
1262        .poll           = wl1273_fm_fops_poll,
1263        .unlocked_ioctl = video_ioctl2,
1264        .open           = wl1273_fm_fops_open,
1265        .release        = wl1273_fm_fops_release,
1266};
1267
1268static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1269                                     struct v4l2_capability *capability)
1270{
1271        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1272
1273        dev_dbg(radio->dev, "%s\n", __func__);
1274
1275        strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1276                sizeof(capability->driver));
1277        strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1278                sizeof(capability->card));
1279        strlcpy(capability->bus_info, radio->bus_type,
1280                sizeof(capability->bus_info));
1281
1282        capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
1283                V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1284                V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1285                V4L2_CAP_RDS_OUTPUT;
1286
1287        return 0;
1288}
1289
1290static 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
1302static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1303                                    unsigned int i)
1304{
1305        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1306
1307        dev_dbg(radio->dev, "%s\n", __func__);
1308
1309        if (i != 0)
1310                return -EINVAL;
1311
1312        return 0;
1313}
1314
1315/**
1316 * wl1273_fm_set_tx_power() -   Set the transmission power value.
1317 * @core:                       A pointer to the device struct.
1318 * @power:                      The new power value.
1319 */
1320static 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
1338out:
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
1347static 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
1374static 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
1406static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1407{
1408        return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1409}
1410
1411static 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
1465static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1466                                    struct v4l2_audio *audio)
1467{
1468        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1469
1470        dev_dbg(radio->dev, "%s\n", __func__);
1471
1472        if (audio->index > 1)
1473                return -EINVAL;
1474
1475        strlcpy(audio->name, "Radio", sizeof(audio->name));
1476        audio->capability = V4L2_AUDCAP_STEREO;
1477
1478        return 0;
1479}
1480
1481static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1482                                    struct v4l2_audio *audio)
1483{
1484        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1485
1486        dev_dbg(radio->dev, "%s\n", __func__);
1487
1488        if (audio->index != 0)
1489                return -EINVAL;
1490
1491        return 0;
1492}
1493
1494#define WL1273_RDS_NOT_SYNCHRONIZED 0
1495#define WL1273_RDS_SYNCHRONIZED 1
1496
1497static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1498                                    struct v4l2_tuner *tuner)
1499{
1500        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1501        struct wl1273_core *core = radio->core;
1502        u16 val;
1503        int r;
1504
1505        dev_dbg(radio->dev, "%s\n", __func__);
1506
1507        if (tuner->index > 0)
1508                return -EINVAL;
1509
1510        strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1511        tuner->type = V4L2_TUNER_RADIO;
1512
1513        tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1514        tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1515
1516        tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1517                V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1518
1519        if (radio->stereo)
1520                tuner->audmode = V4L2_TUNER_MODE_STEREO;
1521        else
1522                tuner->audmode = V4L2_TUNER_MODE_MONO;
1523
1524        if (core->mode != WL1273_MODE_RX)
1525                return 0;
1526
1527        if (mutex_lock_interruptible(&core->lock))
1528                return -EINTR;
1529
1530        r = core->read(core, WL1273_STEREO_GET, &val);
1531        if (r)
1532                goto out;
1533
1534        if (val == 1)
1535                tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1536        else
1537                tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1538
1539        r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1540        if (r)
1541                goto out;
1542
1543        tuner->signal = (s16) val;
1544        dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1545
1546        tuner->afc = 0;
1547
1548        r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1549        if (r)
1550                goto out;
1551
1552        if (val == WL1273_RDS_SYNCHRONIZED)
1553                tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1554out:
1555        mutex_unlock(&core->lock);
1556
1557        return r;
1558}
1559
1560static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1561                                    struct v4l2_tuner *tuner)
1562{
1563        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1564        struct wl1273_core *core = radio->core;
1565        int r = 0;
1566
1567        dev_dbg(radio->dev, "%s\n", __func__);
1568        dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1569        dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1570        dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1571        dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1572        dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1573        dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1574
1575        if (tuner->index > 0)
1576                return -EINVAL;
1577
1578        if (mutex_lock_interruptible(&core->lock))
1579                return -EINTR;
1580
1581        r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1582        if (r)
1583                goto out;
1584
1585        if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1586                r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1587        else
1588                r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1589
1590        if (r)
1591                dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1592
1593        if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1594                r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1595                if (r < 0) {
1596                        dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1597                                 __func__, r);
1598                        goto out;
1599                }
1600                radio->stereo = false;
1601        } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1602                r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1603                if (r < 0) {
1604                        dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1605                                 __func__, r);
1606                        goto out;
1607                }
1608                radio->stereo = true;
1609        } else {
1610                dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1611                         __func__, tuner->audmode);
1612                r = -EINVAL;
1613                goto out;
1614        }
1615
1616out:
1617        mutex_unlock(&core->lock);
1618
1619        return r;
1620}
1621
1622static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1623                                        struct v4l2_frequency *freq)
1624{
1625        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1626        struct wl1273_core *core = radio->core;
1627
1628        dev_dbg(radio->dev, "%s\n", __func__);
1629
1630        if (mutex_lock_interruptible(&core->lock))
1631                return -EINTR;
1632
1633        freq->type = V4L2_TUNER_RADIO;
1634        freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1635
1636        mutex_unlock(&core->lock);
1637
1638        return 0;
1639}
1640
1641static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1642                                        struct v4l2_frequency *freq)
1643{
1644        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1645        struct wl1273_core *core = radio->core;
1646        int r;
1647
1648        dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1649
1650        if (freq->type != V4L2_TUNER_RADIO) {
1651                dev_dbg(radio->dev,
1652                        "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1653                return -EINVAL;
1654        }
1655
1656        if (mutex_lock_interruptible(&core->lock))
1657                return -EINTR;
1658
1659        if (core->mode == WL1273_MODE_RX) {
1660                dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1661
1662                r = wl1273_fm_set_rx_freq(radio,
1663                                          WL1273_INV_FREQ(freq->frequency));
1664                if (r)
1665                        dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1666                                 ": set frequency failed with %d\n", r);
1667        } else {
1668                r = wl1273_fm_set_tx_freq(radio,
1669                                          WL1273_INV_FREQ(freq->frequency));
1670                if (r)
1671                        dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1672                                 ": set frequency failed with %d\n", r);
1673        }
1674
1675        mutex_unlock(&core->lock);
1676
1677        dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1678        return r;
1679}
1680
1681#define WL1273_DEFAULT_SEEK_LEVEL       7
1682
1683static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1684                                           struct v4l2_hw_freq_seek *seek)
1685{
1686        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1687        struct wl1273_core *core = radio->core;
1688        int r;
1689
1690        dev_dbg(radio->dev, "%s\n", __func__);
1691
1692        if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1693                return -EINVAL;
1694
1695        if (mutex_lock_interruptible(&core->lock))
1696                return -EINTR;
1697
1698        r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1699        if (r)
1700                goto out;
1701
1702        r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1703        if (r)
1704                dev_warn(radio->dev, "HW seek failed: %d\n", r);
1705
1706        r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1707                               WL1273_DEFAULT_SEEK_LEVEL);
1708        if (r)
1709                dev_warn(radio->dev, "HW seek failed: %d\n", r);
1710
1711out:
1712        mutex_unlock(&core->lock);
1713        return r;
1714}
1715
1716static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1717                                        struct v4l2_modulator *modulator)
1718{
1719        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1720        struct wl1273_core *core = radio->core;
1721        int r = 0;
1722
1723        dev_dbg(radio->dev, "%s\n", __func__);
1724
1725        if (modulator->index > 0)
1726                return -EINVAL;
1727
1728        if (mutex_lock_interruptible(&core->lock))
1729                return -EINTR;
1730
1731        r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1732        if (r)
1733                goto out;
1734
1735        if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1736                r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1737        else
1738                r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1739
1740        if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1741                r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1742        else
1743                r = core->write(core, WL1273_MONO_SET,
1744                                WL1273_RX_STEREO);
1745        if (r < 0)
1746                dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1747                         "MONO_SET fails: %d\n", r);
1748out:
1749        mutex_unlock(&core->lock);
1750
1751        return r;
1752}
1753
1754static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1755                                        struct v4l2_modulator *modulator)
1756{
1757        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1758        struct wl1273_core *core = radio->core;
1759        u16 val;
1760        int r;
1761
1762        dev_dbg(radio->dev, "%s\n", __func__);
1763
1764        strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1765                sizeof(modulator->name));
1766
1767        modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1768        modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1769
1770        modulator->capability =  V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1771                V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1772
1773        if (core->mode != WL1273_MODE_TX)
1774                return 0;
1775
1776        if (mutex_lock_interruptible(&core->lock))
1777                return -EINTR;
1778
1779        r = core->read(core, WL1273_MONO_SET, &val);
1780        if (r)
1781                goto out;
1782
1783        if (val == WL1273_TX_STEREO)
1784                modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1785        else
1786                modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1787
1788        if (radio->rds_on)
1789                modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1790out:
1791        mutex_unlock(&core->lock);
1792
1793        return 0;
1794}
1795
1796static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1797{
1798        struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1799        struct wl1273_core *core = radio->core;
1800        struct device *dev = radio->dev;
1801        u16 val;
1802        int r;
1803
1804        dev_info(dev, DRIVER_DESC);
1805
1806        if (core->mode == WL1273_MODE_OFF) {
1807                dev_info(dev, "Mode: Off\n");
1808                return 0;
1809        }
1810
1811        if (core->mode == WL1273_MODE_SUSPENDED) {
1812                dev_info(dev, "Mode: Suspended\n");
1813                return 0;
1814        }
1815
1816        r = core->read(core, WL1273_ASIC_ID_GET, &val);
1817        if (r)
1818                dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1819        else
1820                dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1821
1822        r = core->read(core, WL1273_ASIC_VER_GET, &val);
1823        if (r)
1824                dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1825        else
1826                dev_info(dev, "ASIC Version: 0x%04x\n", val);
1827
1828        r = core->read(core, WL1273_FIRM_VER_GET, &val);
1829        if (r)
1830                dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1831        else
1832                dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1833
1834        r = core->read(core, WL1273_BAND_SET, &val);
1835        if (r)
1836                dev_err(dev, "%s: Get BAND fails.\n", __func__);
1837        else
1838                dev_info(dev, "BAND: %d\n", val);
1839
1840        if (core->mode == WL1273_MODE_TX) {
1841                r = core->read(core, WL1273_PUPD_SET, &val);
1842                if (r)
1843                        dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1844                else
1845                        dev_info(dev, "PUPD: 0x%04x\n", val);
1846
1847                r = core->read(core, WL1273_CHANL_SET, &val);
1848                if (r)
1849                        dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1850                else
1851                        dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1852        } else if (core->mode == WL1273_MODE_RX) {
1853                int bf = radio->rangelow;
1854
1855                r = core->read(core, WL1273_FREQ_SET, &val);
1856                if (r)
1857                        dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1858                else
1859                        dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1860
1861                r = core->read(core, WL1273_MOST_MODE_SET, &val);
1862                if (r)
1863                        dev_err(dev, "%s: Get MOST_MODE fails.\n",
1864                                __func__);
1865                else if (val == 0)
1866                        dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1867                else if (val == 1)
1868                        dev_info(dev, "MOST_MODE: Force mono output\n");
1869                else
1870                        dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1871
1872                r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1873                if (r)
1874                        dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1875                else if (val == 0)
1876                        dev_info(dev,
1877                                 "MOST_BLEND: Switched blend & hysteresis.\n");
1878                else if (val == 1)
1879                        dev_info(dev, "MOST_BLEND: Soft blend.\n");
1880                else
1881                        dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1882
1883                r = core->read(core, WL1273_STEREO_GET, &val);
1884                if (r)
1885                        dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1886                else if (val == 0)
1887                        dev_info(dev, "STEREO: Not detected\n");
1888                else if (val == 1)
1889                        dev_info(dev, "STEREO: Detected\n");
1890                else
1891                        dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1892
1893                r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1894                if (r)
1895                        dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1896                else
1897                        dev_info(dev, "RX signal strength: %d\n", (s16) val);
1898
1899                r = core->read(core, WL1273_POWER_SET, &val);
1900                if (r)
1901                        dev_err(dev, "%s: Get POWER fails.\n", __func__);
1902                else
1903                        dev_info(dev, "POWER: 0x%04x\n", val);
1904
1905                r = core->read(core, WL1273_INT_MASK_SET, &val);
1906                if (r)
1907                        dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1908                else
1909                        dev_info(dev, "INT_MASK: 0x%04x\n", val);
1910
1911                r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1912                if (r)
1913                        dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1914                                __func__);
1915                else if (val == 0)
1916                        dev_info(dev, "RDS_SYNC: Not synchronized\n");
1917
1918                else if (val == 1)
1919                        dev_info(dev, "RDS_SYNC: Synchronized\n");
1920                else
1921                        dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1922
1923                r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1924                if (r)
1925                        dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1926                                __func__);
1927                else
1928                        dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1929
1930                r = core->read(core, WL1273_VOLUME_SET, &val);
1931                if (r)
1932                        dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1933                else
1934                        dev_info(dev, "VOLUME: 0x%04x\n", val);
1935        }
1936
1937        return 0;
1938}
1939
1940static void wl1273_vdev_release(struct video_device *dev)
1941{
1942}
1943
1944static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1945        .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1946        .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1947};
1948
1949static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1950        .vidioc_querycap        = wl1273_fm_vidioc_querycap,
1951        .vidioc_g_input         = wl1273_fm_vidioc_g_input,
1952        .vidioc_s_input         = wl1273_fm_vidioc_s_input,
1953        .vidioc_g_audio         = wl1273_fm_vidioc_g_audio,
1954        .vidioc_s_audio         = wl1273_fm_vidioc_s_audio,
1955        .vidioc_g_tuner         = wl1273_fm_vidioc_g_tuner,
1956        .vidioc_s_tuner         = wl1273_fm_vidioc_s_tuner,
1957        .vidioc_g_frequency     = wl1273_fm_vidioc_g_frequency,
1958        .vidioc_s_frequency     = wl1273_fm_vidioc_s_frequency,
1959        .vidioc_s_hw_freq_seek  = wl1273_fm_vidioc_s_hw_freq_seek,
1960        .vidioc_g_modulator     = wl1273_fm_vidioc_g_modulator,
1961        .vidioc_s_modulator     = wl1273_fm_vidioc_s_modulator,
1962        .vidioc_log_status      = wl1273_fm_vidioc_log_status,
1963};
1964
1965static struct video_device wl1273_viddev_template = {
1966        .fops                   = &wl1273_fops,
1967        .ioctl_ops              = &wl1273_ioctl_ops,
1968        .name                   = WL1273_FM_DRIVER_NAME,
1969        .release                = wl1273_vdev_release,
1970};
1971
1972static int wl1273_fm_radio_remove(struct platform_device *pdev)
1973{
1974        struct wl1273_device *radio = platform_get_drvdata(pdev);
1975        struct wl1273_core *core = radio->core;
1976
1977        dev_info(&pdev->dev, "%s.\n", __func__);
1978
1979        free_irq(core->client->irq, radio);
1980        core->pdata->free_resources();
1981
1982        v4l2_ctrl_handler_free(&radio->ctrl_handler);
1983        video_unregister_device(&radio->videodev);
1984        v4l2_device_unregister(&radio->v4l2dev);
1985        kfree(radio->buffer);
1986        kfree(radio->write_buf);
1987        kfree(radio);
1988
1989        return 0;
1990}
1991
1992static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev)
1993{
1994        struct wl1273_core **core = pdev->dev.platform_data;
1995        struct wl1273_device *radio;
1996        struct v4l2_ctrl *ctrl;
1997        int r = 0;
1998
1999        pr_debug("%s\n", __func__);
2000
2001        if (!core) {
2002                dev_err(&pdev->dev, "No platform data.\n");
2003                r = -EINVAL;
2004                goto pdata_err;
2005        }
2006
2007        radio = kzalloc(sizeof(*radio), GFP_KERNEL);
2008        if (!radio) {
2009                r = -ENOMEM;
2010                goto pdata_err;
2011        }
2012
2013        /* RDS buffer allocation */
2014        radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2015        radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
2016        if (!radio->buffer) {
2017                pr_err("Cannot allocate memory for RDS buffer.\n");
2018                r = -ENOMEM;
2019                goto err_kmalloc;
2020        }
2021
2022        radio->core = *core;
2023        radio->irq_flags = WL1273_IRQ_MASK;
2024        radio->dev = &radio->core->client->dev;
2025        radio->rds_on = false;
2026        radio->core->mode = WL1273_MODE_OFF;
2027        radio->tx_power = 118;
2028        radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2029        radio->band = WL1273_BAND_OTHER;
2030        radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2031        radio->core->channel_number = 2;
2032        radio->core->volume = WL1273_DEFAULT_VOLUME;
2033        radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2034        radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2035        radio->rangelow = WL1273_BAND_OTHER_LOW;
2036        radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2037        radio->stereo = true;
2038        radio->bus_type = "I2C";
2039
2040        if (radio->core->pdata->request_resources) {
2041                r = radio->core->pdata->request_resources(radio->core->client);
2042                if (r) {
2043                        dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2044                                ": Cannot get platform data\n");
2045                        goto err_resources;
2046                }
2047
2048                dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2049
2050                r = request_threaded_irq(radio->core->client->irq, NULL,
2051                                         wl1273_fm_irq_thread_handler,
2052                                         IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2053                                         "wl1273-fm", radio);
2054                if (r < 0) {
2055                        dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2056                                ": Unable to register IRQ handler: %d\n", r);
2057                        goto err_request_irq;
2058                }
2059        } else {
2060                dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2061                        " not configured");
2062                r = -EINVAL;
2063                goto err_resources;
2064        }
2065
2066        init_completion(&radio->busy);
2067        init_waitqueue_head(&radio->read_queue);
2068
2069        radio->write_buf = kmalloc(256, GFP_KERNEL);
2070        if (!radio->write_buf) {
2071                r = -ENOMEM;
2072                goto write_buf_err;
2073        }
2074
2075        radio->dev = &pdev->dev;
2076        radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2077        radio->rds_users = 0;
2078
2079        r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2080        if (r) {
2081                dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2082                goto device_register_err;
2083        }
2084
2085        /* V4L2 configuration */
2086        memcpy(&radio->videodev, &wl1273_viddev_template,
2087               sizeof(wl1273_viddev_template));
2088
2089        radio->videodev.v4l2_dev = &radio->v4l2dev;
2090
2091        v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2092
2093        /* add in ascending ID order */
2094        v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2095                          V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2096                          WL1273_DEFAULT_VOLUME);
2097
2098        v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2099                          V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2100
2101        v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2102                               V4L2_CID_TUNE_PREEMPHASIS,
2103                               V4L2_PREEMPHASIS_75_uS, 0x03,
2104                               V4L2_PREEMPHASIS_50_uS);
2105
2106        v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2107                          V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2108
2109        ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2110                                 V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2111                                 0, 255, 1, 255);
2112        if (ctrl)
2113                ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2114
2115        if (radio->ctrl_handler.error) {
2116                r = radio->ctrl_handler.error;
2117                dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2118                goto handler_init_err;
2119        }
2120
2121        video_set_drvdata(&radio->videodev, radio);
2122        platform_set_drvdata(pdev, radio);
2123
2124        /* register video device */
2125        r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2126        if (r) {
2127                dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2128                        ": Could not register video device\n");
2129                goto handler_init_err;
2130        }
2131
2132        return 0;
2133
2134handler_init_err:
2135        v4l2_ctrl_handler_free(&radio->ctrl_handler);
2136        v4l2_device_unregister(&radio->v4l2dev);
2137device_register_err:
2138        kfree(radio->write_buf);
2139write_buf_err:
2140        free_irq(radio->core->client->irq, radio);
2141err_request_irq:
2142        radio->core->pdata->free_resources();
2143err_resources:
2144        kfree(radio->buffer);
2145err_kmalloc:
2146        kfree(radio);
2147pdata_err:
2148        return r;
2149}
2150
2151static struct platform_driver wl1273_fm_radio_driver = {
2152        .probe          = wl1273_fm_radio_probe,
2153        .remove         = __devexit_p(wl1273_fm_radio_remove),
2154        .driver         = {
2155                .name   = "wl1273_fm_radio",
2156                .owner  = THIS_MODULE,
2157        },
2158};
2159
2160module_platform_driver(wl1273_fm_radio_driver);
2161
2162MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2163MODULE_DESCRIPTION(DRIVER_DESC);
2164MODULE_LICENSE("GPL");
2165MODULE_ALIAS("platform:wl1273_fm_radio");
2166