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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Driver for the Texas Instruments WL1273 FM radio.4 *5 * Copyright (C) 2011 Nokia Corporation6 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>7 */8 9#include <linux/delay.h>10#include <linux/firmware.h>11#include <linux/interrupt.h>12#include <linux/mfd/wl1273-core.h>13#include <linux/slab.h>14#include <linux/module.h>15#include <media/v4l2-common.h>16#include <media/v4l2-ctrls.h>17#include <media/v4l2-device.h>18#include <media/v4l2-ioctl.h>19 20#define DRIVER_DESC "Wl1273 FM Radio"21 22#define WL1273_POWER_SET_OFF 023#define WL1273_POWER_SET_FM BIT(0)24#define WL1273_POWER_SET_RDS BIT(1)25#define WL1273_POWER_SET_RETENTION BIT(4)26 27#define WL1273_PUPD_SET_OFF 0x0028#define WL1273_PUPD_SET_ON 0x0129#define WL1273_PUPD_SET_RETENTION 0x1030 31#define WL1273_FREQ(x) (x * 10000 / 625)32#define WL1273_INV_FREQ(x) (x * 625 / 10000)33 34/*35 * static int radio_nr - The number of the radio device36 *37 * The default is 0.38 */39static int radio_nr;40module_param(radio_nr, int, 0);41MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");42 43struct wl1273_device {44 char *bus_type;45 46 u8 forbidden;47 unsigned int preemphasis;48 unsigned int spacing;49 unsigned int tx_power;50 unsigned int rx_frequency;51 unsigned int tx_frequency;52 unsigned int rangelow;53 unsigned int rangehigh;54 unsigned int band;55 bool stereo;56 57 /* RDS */58 unsigned int rds_on;59 60 wait_queue_head_t read_queue;61 struct mutex lock; /* for serializing fm radio operations */62 struct completion busy;63 64 unsigned char *buffer;65 unsigned int buf_size;66 unsigned int rd_index;67 unsigned int wr_index;68 69 /* Selected interrupts */70 u16 irq_flags;71 u16 irq_received;72 73 struct v4l2_ctrl_handler ctrl_handler;74 struct v4l2_device v4l2dev;75 struct video_device videodev;76 struct device *dev;77 struct wl1273_core *core;78 struct file *owner;79 char *write_buf;80 unsigned int rds_users;81};82 83#define WL1273_IRQ_MASK (WL1273_FR_EVENT | \84 WL1273_POW_ENB_EVENT)85 86/*87 * static unsigned int rds_buf - the number of RDS buffer blocks used.88 *89 * The default number is 100.90 */91static unsigned int rds_buf = 100;92module_param(rds_buf, uint, 0);93MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");94 95static int wl1273_fm_write_fw(struct wl1273_core *core,96 __u8 *fw, int len)97{98 struct i2c_client *client = core->client;99 struct i2c_msg msg;100 int i, r = 0;101 102 msg.addr = client->addr;103 msg.flags = 0;104 105 for (i = 0; i <= len; i++) {106 msg.len = fw[0];107 msg.buf = fw + 1;108 109 fw += msg.len + 1;110 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);111 112 r = i2c_transfer(client->adapter, &msg, 1);113 if (r < 0 && i < len + 1)114 break;115 }116 117 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);118 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);119 120 /* Last transfer always fails. */121 if (i == len || r == 1)122 r = 0;123 124 return r;125}126 127#define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status)128#define WL1273_RDS_CORRECTABLE_ERROR (1 << 3)129#define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4)130 131static int wl1273_fm_rds(struct wl1273_device *radio)132{133 struct wl1273_core *core = radio->core;134 struct i2c_client *client = core->client;135 u16 val;136 u8 b0 = WL1273_RDS_DATA_GET, status;137 struct v4l2_rds_data rds = { 0, 0, 0 };138 struct i2c_msg msg[] = {139 {140 .addr = client->addr,141 .flags = 0,142 .buf = &b0,143 .len = 1,144 },145 {146 .addr = client->addr,147 .flags = I2C_M_RD,148 .buf = (u8 *) &rds,149 .len = sizeof(rds),150 }151 };152 int r;153 154 if (core->mode != WL1273_MODE_RX)155 return 0;156 157 r = core->read(core, WL1273_RDS_SYNC_GET, &val);158 if (r)159 return r;160 161 if ((val & 0x01) == 0) {162 /* RDS decoder not synchronized */163 return -EAGAIN;164 }165 166 /* copy all four RDS blocks to internal buffer */167 do {168 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));169 if (r != ARRAY_SIZE(msg)) {170 dev_err(radio->dev, WL1273_FM_DRIVER_NAME171 ": %s: read_rds error r == %i)\n",172 __func__, r);173 }174 175 status = rds.block;176 177 if (!WL1273_FIFO_HAS_DATA(status))178 break;179 180 /* copy bits 0-2 (the block ID) to bits 3-5 */181 rds.block = V4L2_RDS_BLOCK_MSK & status;182 rds.block |= rds.block << 3;183 184 /* copy the error bits to standard positions */185 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {186 rds.block |= V4L2_RDS_BLOCK_ERROR;187 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;188 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) {189 rds.block &= ~V4L2_RDS_BLOCK_ERROR;190 rds.block |= V4L2_RDS_BLOCK_CORRECTED;191 }192 193 /* copy RDS block to internal buffer */194 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);195 radio->wr_index += 3;196 197 /* wrap write pointer */198 if (radio->wr_index >= radio->buf_size)199 radio->wr_index = 0;200 201 /* check for overflow & start over */202 if (radio->wr_index == radio->rd_index) {203 dev_dbg(radio->dev, "RDS OVERFLOW");204 205 radio->rd_index = 0;206 radio->wr_index = 0;207 break;208 }209 } while (WL1273_FIFO_HAS_DATA(status));210 211 /* wake up read queue */212 if (radio->wr_index != radio->rd_index)213 wake_up_interruptible(&radio->read_queue);214 215 return 0;216}217 218static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)219{220 struct wl1273_device *radio = dev_id;221 struct wl1273_core *core = radio->core;222 u16 flags;223 int r;224 225 r = core->read(core, WL1273_FLAG_GET, &flags);226 if (r)227 goto out;228 229 if (flags & WL1273_BL_EVENT) {230 radio->irq_received = flags;231 dev_dbg(radio->dev, "IRQ: BL\n");232 }233 234 if (flags & WL1273_RDS_EVENT) {235 msleep(200);236 237 wl1273_fm_rds(radio);238 }239 240 if (flags & WL1273_BBLK_EVENT)241 dev_dbg(radio->dev, "IRQ: BBLK\n");242 243 if (flags & WL1273_LSYNC_EVENT)244 dev_dbg(radio->dev, "IRQ: LSYNC\n");245 246 if (flags & WL1273_LEV_EVENT) {247 u16 level;248 249 r = core->read(core, WL1273_RSSI_LVL_GET, &level);250 if (r)251 goto out;252 253 if (level > 14)254 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);255 }256 257 if (flags & WL1273_IFFR_EVENT)258 dev_dbg(radio->dev, "IRQ: IFFR\n");259 260 if (flags & WL1273_PI_EVENT)261 dev_dbg(radio->dev, "IRQ: PI\n");262 263 if (flags & WL1273_PD_EVENT)264 dev_dbg(radio->dev, "IRQ: PD\n");265 266 if (flags & WL1273_STIC_EVENT)267 dev_dbg(radio->dev, "IRQ: STIC\n");268 269 if (flags & WL1273_MAL_EVENT)270 dev_dbg(radio->dev, "IRQ: MAL\n");271 272 if (flags & WL1273_POW_ENB_EVENT) {273 complete(&radio->busy);274 dev_dbg(radio->dev, "NOT BUSY\n");275 dev_dbg(radio->dev, "IRQ: POW_ENB\n");276 }277 278 if (flags & WL1273_SCAN_OVER_EVENT)279 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");280 281 if (flags & WL1273_ERROR_EVENT)282 dev_dbg(radio->dev, "IRQ: ERROR\n");283 284 if (flags & WL1273_FR_EVENT) {285 u16 freq;286 287 dev_dbg(radio->dev, "IRQ: FR:\n");288 289 if (core->mode == WL1273_MODE_RX) {290 r = core->write(core, WL1273_TUNER_MODE_SET,291 TUNER_MODE_STOP_SEARCH);292 if (r) {293 dev_err(radio->dev,294 "%s: TUNER_MODE_SET fails: %d\n",295 __func__, r);296 goto out;297 }298 299 r = core->read(core, WL1273_FREQ_SET, &freq);300 if (r)301 goto out;302 303 if (radio->band == WL1273_BAND_JAPAN)304 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +305 freq * 50;306 else307 radio->rx_frequency = WL1273_BAND_OTHER_LOW +308 freq * 50;309 /*310 * The driver works better with this msleep,311 * the documentation doesn't mention it.312 */313 usleep_range(10000, 15000);314 315 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);316 317 } else {318 r = core->read(core, WL1273_CHANL_SET, &freq);319 if (r)320 goto out;321 322 dev_dbg(radio->dev, "%dkHz\n", freq);323 }324 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);325 }326 327out:328 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);329 complete(&radio->busy);330 331 return IRQ_HANDLED;332}333 334static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)335{336 struct wl1273_core *core = radio->core;337 int r = 0;338 unsigned long t;339 340 if (freq < WL1273_BAND_TX_LOW) {341 dev_err(radio->dev,342 "Frequency out of range: %d < %d\n", freq,343 WL1273_BAND_TX_LOW);344 return -ERANGE;345 }346 347 if (freq > WL1273_BAND_TX_HIGH) {348 dev_err(radio->dev,349 "Frequency out of range: %d > %d\n", freq,350 WL1273_BAND_TX_HIGH);351 return -ERANGE;352 }353 354 /*355 * The driver works better with this sleep,356 * the documentation doesn't mention it.357 */358 usleep_range(5000, 10000);359 360 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);361 362 /* Set the current tx channel */363 r = core->write(core, WL1273_CHANL_SET, freq / 10);364 if (r)365 return r;366 367 reinit_completion(&radio->busy);368 369 /* wait for the FR IRQ */370 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));371 if (!t)372 return -ETIMEDOUT;373 374 dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);375 376 /* Enable the output power */377 r = core->write(core, WL1273_POWER_ENB_SET, 1);378 if (r)379 return r;380 381 reinit_completion(&radio->busy);382 383 /* wait for the POWER_ENB IRQ */384 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));385 if (!t)386 return -ETIMEDOUT;387 388 radio->tx_frequency = freq;389 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);390 391 return 0;392}393 394static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)395{396 struct wl1273_core *core = radio->core;397 int r, f;398 unsigned long t;399 400 if (freq < radio->rangelow) {401 dev_err(radio->dev,402 "Frequency out of range: %d < %d\n", freq,403 radio->rangelow);404 r = -ERANGE;405 goto err;406 }407 408 if (freq > radio->rangehigh) {409 dev_err(radio->dev,410 "Frequency out of range: %d > %d\n", freq,411 radio->rangehigh);412 r = -ERANGE;413 goto err;414 }415 416 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);417 418 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);419 420 if (radio->band == WL1273_BAND_JAPAN)421 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;422 else423 f = (freq - WL1273_BAND_OTHER_LOW) / 50;424 425 r = core->write(core, WL1273_FREQ_SET, f);426 if (r) {427 dev_err(radio->dev, "FREQ_SET fails\n");428 goto err;429 }430 431 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);432 if (r) {433 dev_err(radio->dev, "TUNER_MODE_SET fails\n");434 goto err;435 }436 437 reinit_completion(&radio->busy);438 439 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));440 if (!t) {441 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);442 return -ETIMEDOUT;443 }444 445 radio->rd_index = 0;446 radio->wr_index = 0;447 radio->rx_frequency = freq;448 return 0;449err:450 return r;451}452 453static int wl1273_fm_get_freq(struct wl1273_device *radio)454{455 struct wl1273_core *core = radio->core;456 unsigned int freq;457 u16 f;458 int r;459 460 if (core->mode == WL1273_MODE_RX) {461 r = core->read(core, WL1273_FREQ_SET, &f);462 if (r)463 return r;464 465 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);466 if (radio->band == WL1273_BAND_JAPAN)467 freq = WL1273_BAND_JAPAN_LOW + 50 * f;468 else469 freq = WL1273_BAND_OTHER_LOW + 50 * f;470 } else {471 r = core->read(core, WL1273_CHANL_SET, &f);472 if (r)473 return r;474 475 freq = f * 10;476 }477 478 return freq;479}480 481/**482 * wl1273_fm_upload_firmware_patch() - Upload the firmware.483 * @radio: A pointer to the device struct.484 *485 * The firmware file consists of arrays of bytes where the first byte486 * gives the array length. The first byte in the file gives the487 * number of these arrays.488 */489static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)490{491 struct wl1273_core *core = radio->core;492 unsigned int packet_num;493 const struct firmware *fw_p;494 const char *fw_name = "radio-wl1273-fw.bin";495 struct device *dev = radio->dev;496 __u8 *ptr;497 int r;498 499 dev_dbg(dev, "%s:\n", __func__);500 501 /*502 * Uploading the firmware patch is not always necessary,503 * so we only print an info message.504 */505 if (request_firmware(&fw_p, fw_name, dev)) {506 dev_info(dev, "%s - %s not found\n", __func__, fw_name);507 508 return 0;509 }510 511 ptr = (__u8 *) fw_p->data;512 packet_num = ptr[0];513 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);514 515 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);516 if (r) {517 dev_err(dev, "FW upload error: %d\n", r);518 goto out;519 }520 521 /* ignore possible error here */522 core->write(core, WL1273_RESET, 0);523 524 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);525out:526 release_firmware(fw_p);527 return r;528}529 530static int wl1273_fm_stop(struct wl1273_device *radio)531{532 struct wl1273_core *core = radio->core;533 534 if (core->mode == WL1273_MODE_RX) {535 int r = core->write(core, WL1273_POWER_SET,536 WL1273_POWER_SET_OFF);537 if (r)538 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",539 __func__, r);540 } else if (core->mode == WL1273_MODE_TX) {541 int r = core->write(core, WL1273_PUPD_SET,542 WL1273_PUPD_SET_OFF);543 if (r)544 dev_err(radio->dev,545 "%s: PUPD_SET fails: %d\n", __func__, r);546 }547 548 if (core->pdata->disable) {549 core->pdata->disable();550 dev_dbg(radio->dev, "Back to reset\n");551 }552 553 return 0;554}555 556static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)557{558 struct wl1273_core *core = radio->core;559 struct wl1273_fm_platform_data *pdata = core->pdata;560 struct device *dev = radio->dev;561 int r = -EINVAL;562 563 if (pdata->enable && core->mode == WL1273_MODE_OFF) {564 dev_dbg(radio->dev, "Out of reset\n");565 566 pdata->enable();567 msleep(250);568 }569 570 if (new_mode == WL1273_MODE_RX) {571 u16 val = WL1273_POWER_SET_FM;572 573 if (radio->rds_on)574 val |= WL1273_POWER_SET_RDS;575 576 /* If this fails try again */577 r = core->write(core, WL1273_POWER_SET, val);578 if (r) {579 msleep(100);580 581 r = core->write(core, WL1273_POWER_SET, val);582 if (r) {583 dev_err(dev, "%s: POWER_SET fails\n", __func__);584 goto fail;585 }586 }587 588 /* rds buffer configuration */589 radio->wr_index = 0;590 radio->rd_index = 0;591 592 } else if (new_mode == WL1273_MODE_TX) {593 /* If this fails try again once */594 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);595 if (r) {596 msleep(100);597 r = core->write(core, WL1273_PUPD_SET,598 WL1273_PUPD_SET_ON);599 if (r) {600 dev_err(dev, "%s: PUPD_SET fails\n", __func__);601 goto fail;602 }603 }604 605 if (radio->rds_on) {606 r = core->write(core, WL1273_RDS_DATA_ENB, 1);607 if (r) {608 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",609 __func__);610 goto fail;611 }612 } else {613 r = core->write(core, WL1273_RDS_DATA_ENB, 0);614 if (r) {615 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",616 __func__);617 goto fail;618 }619 }620 } else {621 dev_warn(dev, "%s: Illegal mode.\n", __func__);622 }623 624 if (core->mode == WL1273_MODE_OFF) {625 r = wl1273_fm_upload_firmware_patch(radio);626 if (r)627 dev_warn(dev, "Firmware upload failed.\n");628 629 /*630 * Sometimes the chip is in a wrong power state at this point.631 * So we set the power once again.632 */633 if (new_mode == WL1273_MODE_RX) {634 u16 val = WL1273_POWER_SET_FM;635 636 if (radio->rds_on)637 val |= WL1273_POWER_SET_RDS;638 639 r = core->write(core, WL1273_POWER_SET, val);640 if (r) {641 dev_err(dev, "%s: POWER_SET fails\n", __func__);642 goto fail;643 }644 } else if (new_mode == WL1273_MODE_TX) {645 r = core->write(core, WL1273_PUPD_SET,646 WL1273_PUPD_SET_ON);647 if (r) {648 dev_err(dev, "%s: PUPD_SET fails\n", __func__);649 goto fail;650 }651 }652 }653 654 return 0;655fail:656 if (pdata->disable)657 pdata->disable();658 659 dev_dbg(dev, "%s: return: %d\n", __func__, r);660 return r;661}662 663static int wl1273_fm_suspend(struct wl1273_device *radio)664{665 struct wl1273_core *core = radio->core;666 int r;667 668 /* Cannot go from OFF to SUSPENDED */669 if (core->mode == WL1273_MODE_RX)670 r = core->write(core, WL1273_POWER_SET,671 WL1273_POWER_SET_RETENTION);672 else if (core->mode == WL1273_MODE_TX)673 r = core->write(core, WL1273_PUPD_SET,674 WL1273_PUPD_SET_RETENTION);675 else676 r = -EINVAL;677 678 if (r) {679 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);680 goto out;681 }682 683out:684 return r;685}686 687static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)688{689 struct wl1273_core *core = radio->core;690 struct device *dev = radio->dev;691 int old_mode;692 int r;693 694 dev_dbg(dev, "%s\n", __func__);695 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);696 697 old_mode = core->mode;698 if (mode & radio->forbidden) {699 r = -EPERM;700 goto out;701 }702 703 switch (mode) {704 case WL1273_MODE_RX:705 case WL1273_MODE_TX:706 r = wl1273_fm_start(radio, mode);707 if (r) {708 dev_err(dev, "%s: Cannot start.\n", __func__);709 wl1273_fm_stop(radio);710 goto out;711 }712 713 core->mode = mode;714 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);715 if (r) {716 dev_err(dev, "INT_MASK_SET fails.\n");717 goto out;718 }719 720 /* remember previous settings */721 if (mode == WL1273_MODE_RX) {722 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);723 if (r) {724 dev_err(dev, "set freq fails: %d.\n", r);725 goto out;726 }727 728 r = core->set_volume(core, core->volume);729 if (r) {730 dev_err(dev, "set volume fails: %d.\n", r);731 goto out;732 }733 734 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,735 core->volume);736 } else {737 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);738 if (r) {739 dev_err(dev, "set freq fails: %d.\n", r);740 goto out;741 }742 }743 744 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);745 746 r = core->set_audio(core, core->audio_mode);747 if (r)748 dev_err(dev, "Cannot set audio mode.\n");749 break;750 751 case WL1273_MODE_OFF:752 r = wl1273_fm_stop(radio);753 if (r)754 dev_err(dev, "%s: Off fails: %d\n", __func__, r);755 else756 core->mode = WL1273_MODE_OFF;757 758 break;759 760 case WL1273_MODE_SUSPENDED:761 r = wl1273_fm_suspend(radio);762 if (r)763 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);764 else765 core->mode = WL1273_MODE_SUSPENDED;766 767 break;768 769 default:770 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);771 r = -EINVAL;772 break;773 }774out:775 if (r)776 core->mode = old_mode;777 778 return r;779}780 781static int wl1273_fm_set_seek(struct wl1273_device *radio,782 unsigned int wrap_around,783 unsigned int seek_upward,784 int level)785{786 struct wl1273_core *core = radio->core;787 int r = 0;788 unsigned int dir = (seek_upward == 0) ? 0 : 1;789 unsigned int f;790 791 f = radio->rx_frequency;792 dev_dbg(radio->dev, "rx_frequency: %d\n", f);793 794 if (dir && f + radio->spacing <= radio->rangehigh)795 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);796 else if (dir && wrap_around)797 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);798 else if (f - radio->spacing >= radio->rangelow)799 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);800 else if (wrap_around)801 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);802 803 if (r)804 goto out;805 806 if (level < SCHAR_MIN || level > SCHAR_MAX)807 return -EINVAL;808 809 reinit_completion(&radio->busy);810 dev_dbg(radio->dev, "%s: BUSY\n", __func__);811 812 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);813 if (r)814 goto out;815 816 dev_dbg(radio->dev, "%s\n", __func__);817 818 r = core->write(core, WL1273_SEARCH_LVL_SET, level);819 if (r)820 goto out;821 822 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);823 if (r)824 goto out;825 826 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);827 if (r)828 goto out;829 830 /* wait for the FR IRQ */831 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));832 if (!(radio->irq_received & WL1273_BL_EVENT)) {833 r = -ETIMEDOUT;834 goto out;835 }836 837 radio->irq_received &= ~WL1273_BL_EVENT;838 839 if (!wrap_around)840 goto out;841 842 /* Wrap around */843 dev_dbg(radio->dev, "Wrap around in HW seek.\n");844 845 if (seek_upward)846 f = radio->rangelow;847 else848 f = radio->rangehigh;849 850 r = wl1273_fm_set_rx_freq(radio, f);851 if (r)852 goto out;853 854 reinit_completion(&radio->busy);855 dev_dbg(radio->dev, "%s: BUSY\n", __func__);856 857 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);858 if (r)859 goto out;860 861 /* wait for the FR IRQ */862 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))863 r = -ETIMEDOUT;864out:865 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);866 return r;867}868 869/**870 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.871 * @radio: A pointer to the device struct.872 */873static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)874{875 struct wl1273_core *core = radio->core;876 struct device *dev = radio->dev;877 u16 val;878 int r;879 880 if (core->mode == WL1273_MODE_OFF ||881 core->mode == WL1273_MODE_SUSPENDED)882 return -EPERM;883 884 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);885 if (r) {886 dev_err(dev, "%s: read error: %d\n", __func__, r);887 goto out;888 }889 890out:891 return val;892}893 894/**895 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.896 * @radio: A pointer to the device struct.897 * @preemphasis: The new pre-amphasis value.898 *899 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,900 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.901 */902static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,903 unsigned int preemphasis)904{905 struct wl1273_core *core = radio->core;906 int r;907 u16 em;908 909 if (core->mode == WL1273_MODE_OFF ||910 core->mode == WL1273_MODE_SUSPENDED)911 return -EPERM;912 913 mutex_lock(&core->lock);914 915 switch (preemphasis) {916 case V4L2_PREEMPHASIS_DISABLED:917 em = 1;918 break;919 case V4L2_PREEMPHASIS_50_uS:920 em = 0;921 break;922 case V4L2_PREEMPHASIS_75_uS:923 em = 2;924 break;925 default:926 r = -EINVAL;927 goto out;928 }929 930 r = core->write(core, WL1273_PREMPH_SET, em);931 if (r)932 goto out;933 934 radio->preemphasis = preemphasis;935 936out:937 mutex_unlock(&core->lock);938 return r;939}940 941static int wl1273_fm_rds_on(struct wl1273_device *radio)942{943 struct wl1273_core *core = radio->core;944 int r;945 946 dev_dbg(radio->dev, "%s\n", __func__);947 if (radio->rds_on)948 return 0;949 950 r = core->write(core, WL1273_POWER_SET,951 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);952 if (r)953 goto out;954 955 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);956 if (r)957 dev_err(radio->dev, "set freq fails: %d.\n", r);958out:959 return r;960}961 962static int wl1273_fm_rds_off(struct wl1273_device *radio)963{964 struct wl1273_core *core = radio->core;965 int r;966 967 if (!radio->rds_on)968 return 0;969 970 radio->irq_flags &= ~WL1273_RDS_EVENT;971 972 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);973 if (r)974 goto out;975 976 /* Service pending read */977 wake_up_interruptible(&radio->read_queue);978 979 dev_dbg(radio->dev, "%s\n", __func__);980 981 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);982 if (r)983 goto out;984 985 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);986 if (r)987 dev_err(radio->dev, "set freq fails: %d.\n", r);988out:989 dev_dbg(radio->dev, "%s: exiting...\n", __func__);990 991 return r;992}993 994static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)995{996 int r = 0;997 struct wl1273_core *core = radio->core;998 999 if (core->mode == WL1273_MODE_OFF ||1000 core->mode == WL1273_MODE_SUSPENDED)1001 return -EPERM;1002 1003 if (new_mode == WL1273_RDS_RESET) {1004 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);1005 return r;1006 }1007 1008 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {1009 r = core->write(core, WL1273_RDS_DATA_ENB, 0);1010 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {1011 r = core->write(core, WL1273_RDS_DATA_ENB, 1);1012 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {1013 r = wl1273_fm_rds_off(radio);1014 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {1015 r = wl1273_fm_rds_on(radio);1016 } else {1017 dev_err(radio->dev, "%s: Unknown mode: %d\n",1018 __func__, new_mode);1019 r = -EINVAL;1020 }1021 1022 if (!r)1023 radio->rds_on = new_mode == WL1273_RDS_ON;1024 1025 return r;1026}1027 1028static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,1029 size_t count, loff_t *ppos)1030{1031 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1032 struct wl1273_core *core = radio->core;1033 u16 val;1034 int r;1035 1036 dev_dbg(radio->dev, "%s\n", __func__);1037 1038 if (core->mode != WL1273_MODE_TX)1039 return count;1040 1041 if (radio->rds_users == 0) {1042 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);1043 return 0;1044 }1045 1046 if (mutex_lock_interruptible(&core->lock))1047 return -EINTR;1048 /*1049 * Multiple processes can open the device, but only1050 * one gets to write to it.1051 */1052 if (radio->owner && radio->owner != file) {1053 r = -EBUSY;1054 goto out;1055 }1056 radio->owner = file;1057 1058 /* Manual Mode */1059 if (count > 255)1060 val = 255;1061 else1062 val = count;1063 1064 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);1065 1066 if (copy_from_user(radio->write_buf + 1, buf, val)) {1067 r = -EFAULT;1068 goto out;1069 }1070 1071 dev_dbg(radio->dev, "Count: %d\n", val);1072 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);1073 1074 radio->write_buf[0] = WL1273_RDS_DATA_SET;1075 core->write_data(core, radio->write_buf, val + 1);1076 1077 r = val;1078out:1079 mutex_unlock(&core->lock);1080 1081 return r;1082}1083 1084static __poll_t wl1273_fm_fops_poll(struct file *file,1085 struct poll_table_struct *pts)1086{1087 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1088 struct wl1273_core *core = radio->core;1089 1090 if (radio->owner && radio->owner != file)1091 return EPOLLERR;1092 1093 radio->owner = file;1094 1095 if (core->mode == WL1273_MODE_RX) {1096 poll_wait(file, &radio->read_queue, pts);1097 1098 if (radio->rd_index != radio->wr_index)1099 return EPOLLIN | EPOLLRDNORM;1100 1101 } else if (core->mode == WL1273_MODE_TX) {1102 return EPOLLOUT | EPOLLWRNORM;1103 }1104 1105 return 0;1106}1107 1108static int wl1273_fm_fops_open(struct file *file)1109{1110 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1111 struct wl1273_core *core = radio->core;1112 int r = 0;1113 1114 dev_dbg(radio->dev, "%s\n", __func__);1115 1116 if (core->mode == WL1273_MODE_RX && radio->rds_on &&1117 !radio->rds_users) {1118 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);1119 1120 if (mutex_lock_interruptible(&core->lock))1121 return -EINTR;1122 1123 radio->irq_flags |= WL1273_RDS_EVENT;1124 1125 r = core->write(core, WL1273_INT_MASK_SET,1126 radio->irq_flags);1127 if (r) {1128 mutex_unlock(&core->lock);1129 goto out;1130 }1131 1132 radio->rds_users++;1133 1134 mutex_unlock(&core->lock);1135 }1136out:1137 return r;1138}1139 1140static int wl1273_fm_fops_release(struct file *file)1141{1142 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1143 struct wl1273_core *core = radio->core;1144 int r = 0;1145 1146 dev_dbg(radio->dev, "%s\n", __func__);1147 1148 if (radio->rds_users > 0) {1149 radio->rds_users--;1150 if (radio->rds_users == 0) {1151 mutex_lock(&core->lock);1152 1153 radio->irq_flags &= ~WL1273_RDS_EVENT;1154 1155 if (core->mode == WL1273_MODE_RX) {1156 r = core->write(core,1157 WL1273_INT_MASK_SET,1158 radio->irq_flags);1159 if (r) {1160 mutex_unlock(&core->lock);1161 goto out;1162 }1163 }1164 mutex_unlock(&core->lock);1165 }1166 }1167 1168 if (file == radio->owner)1169 radio->owner = NULL;1170out:1171 return r;1172}1173 1174static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,1175 size_t count, loff_t *ppos)1176{1177 int r = 0;1178 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1179 struct wl1273_core *core = radio->core;1180 unsigned int block_count = 0;1181 u16 val;1182 1183 dev_dbg(radio->dev, "%s\n", __func__);1184 1185 if (core->mode != WL1273_MODE_RX)1186 return 0;1187 1188 if (radio->rds_users == 0) {1189 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);1190 return 0;1191 }1192 1193 if (mutex_lock_interruptible(&core->lock))1194 return -EINTR;1195 1196 /*1197 * Multiple processes can open the device, but only1198 * one at a time gets read access.1199 */1200 if (radio->owner && radio->owner != file) {1201 r = -EBUSY;1202 goto out;1203 }1204 radio->owner = file;1205 1206 r = core->read(core, WL1273_RDS_SYNC_GET, &val);1207 if (r) {1208 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);1209 goto out;1210 } else if (val == 0) {1211 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");1212 r = -ENODATA;1213 goto out;1214 }1215 1216 /* block if no new data available */1217 while (radio->wr_index == radio->rd_index) {1218 if (file->f_flags & O_NONBLOCK) {1219 r = -EWOULDBLOCK;1220 goto out;1221 }1222 1223 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);1224 if (wait_event_interruptible(radio->read_queue,1225 radio->wr_index !=1226 radio->rd_index) < 0) {1227 r = -EINTR;1228 goto out;1229 }1230 }1231 1232 /* calculate block count from byte count */1233 count /= RDS_BLOCK_SIZE;1234 1235 /* copy RDS blocks from the internal buffer and to user buffer */1236 while (block_count < count) {1237 if (radio->rd_index == radio->wr_index)1238 break;1239 1240 /* always transfer complete RDS blocks */1241 if (copy_to_user(buf, &radio->buffer[radio->rd_index],1242 RDS_BLOCK_SIZE))1243 break;1244 1245 /* increment and wrap the read pointer */1246 radio->rd_index += RDS_BLOCK_SIZE;1247 if (radio->rd_index >= radio->buf_size)1248 radio->rd_index = 0;1249 1250 /* increment counters */1251 block_count++;1252 buf += RDS_BLOCK_SIZE;1253 r += RDS_BLOCK_SIZE;1254 }1255 1256out:1257 dev_dbg(radio->dev, "%s: exit\n", __func__);1258 mutex_unlock(&core->lock);1259 1260 return r;1261}1262 1263static const struct v4l2_file_operations wl1273_fops = {1264 .owner = THIS_MODULE,1265 .read = wl1273_fm_fops_read,1266 .write = wl1273_fm_fops_write,1267 .poll = wl1273_fm_fops_poll,1268 .unlocked_ioctl = video_ioctl2,1269 .open = wl1273_fm_fops_open,1270 .release = wl1273_fm_fops_release,1271};1272 1273static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,1274 struct v4l2_capability *capability)1275{1276 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1277 1278 dev_dbg(radio->dev, "%s\n", __func__);1279 1280 strscpy(capability->driver, WL1273_FM_DRIVER_NAME,1281 sizeof(capability->driver));1282 strscpy(capability->card, "TI Wl1273 FM Radio",1283 sizeof(capability->card));1284 strscpy(capability->bus_info, radio->bus_type,1285 sizeof(capability->bus_info));1286 return 0;1287}1288 1289static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,1290 unsigned int *i)1291{1292 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1293 1294 dev_dbg(radio->dev, "%s\n", __func__);1295 1296 *i = 0;1297 1298 return 0;1299}1300 1301static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,1302 unsigned int i)1303{1304 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1305 1306 dev_dbg(radio->dev, "%s\n", __func__);1307 1308 if (i != 0)1309 return -EINVAL;1310 1311 return 0;1312}1313 1314/**1315 * wl1273_fm_set_tx_power() - Set the transmission power value.1316 * @radio: A pointer to the device struct.1317 * @power: The new power value.1318 */1319static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)1320{1321 struct wl1273_core *core = radio->core;1322 int r;1323 1324 if (core->mode == WL1273_MODE_OFF ||1325 core->mode == WL1273_MODE_SUSPENDED)1326 return -EPERM;1327 1328 mutex_lock(&core->lock);1329 1330 /* Convert the dBuV value to chip presentation */1331 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);1332 if (r)1333 goto out;1334 1335 radio->tx_power = power;1336 1337out:1338 mutex_unlock(&core->lock);1339 return r;1340}1341 1342#define WL1273_SPACING_50kHz 11343#define WL1273_SPACING_100kHz 21344#define WL1273_SPACING_200kHz 41345 1346static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,1347 unsigned int spacing)1348{1349 struct wl1273_core *core = radio->core;1350 int r;1351 1352 if (spacing == 0) {1353 r = core->write(core, WL1273_SCAN_SPACING_SET,1354 WL1273_SPACING_100kHz);1355 radio->spacing = 100;1356 } else if (spacing - 50000 < 25000) {1357 r = core->write(core, WL1273_SCAN_SPACING_SET,1358 WL1273_SPACING_50kHz);1359 radio->spacing = 50;1360 } else if (spacing - 100000 < 50000) {1361 r = core->write(core, WL1273_SCAN_SPACING_SET,1362 WL1273_SPACING_100kHz);1363 radio->spacing = 100;1364 } else {1365 r = core->write(core, WL1273_SCAN_SPACING_SET,1366 WL1273_SPACING_200kHz);1367 radio->spacing = 200;1368 }1369 1370 return r;1371}1372 1373static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)1374{1375 struct wl1273_device *radio = ctrl->priv;1376 struct wl1273_core *core = radio->core;1377 1378 dev_dbg(radio->dev, "%s\n", __func__);1379 1380 if (mutex_lock_interruptible(&core->lock))1381 return -EINTR;1382 1383 switch (ctrl->id) {1384 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:1385 ctrl->val = wl1273_fm_get_tx_ctune(radio);1386 break;1387 1388 default:1389 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",1390 __func__, ctrl->id);1391 break;1392 }1393 1394 mutex_unlock(&core->lock);1395 1396 return 0;1397}1398 1399#define WL1273_MUTE_SOFT_ENABLE (1 << 0)1400#define WL1273_MUTE_AC (1 << 1)1401#define WL1273_MUTE_HARD_LEFT (1 << 2)1402#define WL1273_MUTE_HARD_RIGHT (1 << 3)1403#define WL1273_MUTE_SOFT_FORCE (1 << 4)1404 1405static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)1406{1407 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);1408}1409 1410static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)1411{1412 struct wl1273_device *radio = to_radio(ctrl);1413 struct wl1273_core *core = radio->core;1414 int r = 0;1415 1416 dev_dbg(radio->dev, "%s\n", __func__);1417 1418 switch (ctrl->id) {1419 case V4L2_CID_AUDIO_MUTE:1420 if (mutex_lock_interruptible(&core->lock))1421 return -EINTR;1422 1423 if (core->mode == WL1273_MODE_RX && ctrl->val)1424 r = core->write(core,1425 WL1273_MUTE_STATUS_SET,1426 WL1273_MUTE_HARD_LEFT |1427 WL1273_MUTE_HARD_RIGHT);1428 else if (core->mode == WL1273_MODE_RX)1429 r = core->write(core,1430 WL1273_MUTE_STATUS_SET, 0x0);1431 else if (core->mode == WL1273_MODE_TX && ctrl->val)1432 r = core->write(core, WL1273_MUTE, 1);1433 else if (core->mode == WL1273_MODE_TX)1434 r = core->write(core, WL1273_MUTE, 0);1435 1436 mutex_unlock(&core->lock);1437 break;1438 1439 case V4L2_CID_AUDIO_VOLUME:1440 if (ctrl->val == 0)1441 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);1442 else1443 r = core->set_volume(core, core->volume);1444 break;1445 1446 case V4L2_CID_TUNE_PREEMPHASIS:1447 r = wl1273_fm_set_preemphasis(radio, ctrl->val);1448 break;1449 1450 case V4L2_CID_TUNE_POWER_LEVEL:1451 r = wl1273_fm_set_tx_power(radio, ctrl->val);1452 break;1453 1454 default:1455 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",1456 __func__, ctrl->id);1457 break;1458 }1459 1460 dev_dbg(radio->dev, "%s\n", __func__);1461 return r;1462}1463 1464static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,1465 struct v4l2_audio *audio)1466{1467 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1468 1469 dev_dbg(radio->dev, "%s\n", __func__);1470 1471 if (audio->index > 1)1472 return -EINVAL;1473 1474 strscpy(audio->name, "Radio", sizeof(audio->name));1475 audio->capability = V4L2_AUDCAP_STEREO;1476 1477 return 0;1478}1479 1480static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,1481 const struct v4l2_audio *audio)1482{1483 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1484 1485 dev_dbg(radio->dev, "%s\n", __func__);1486 1487 if (audio->index != 0)1488 return -EINVAL;1489 1490 return 0;1491}1492 1493#define WL1273_RDS_NOT_SYNCHRONIZED 01494#define WL1273_RDS_SYNCHRONIZED 11495 1496static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,1497 struct v4l2_tuner *tuner)1498{1499 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1500 struct wl1273_core *core = radio->core;1501 u16 val;1502 int r;1503 1504 dev_dbg(radio->dev, "%s\n", __func__);1505 1506 if (tuner->index > 0)1507 return -EINVAL;1508 1509 strscpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));1510 tuner->type = V4L2_TUNER_RADIO;1511 1512 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);1513 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);1514 1515 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |1516 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |1517 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;1518 1519 if (radio->stereo)1520 tuner->audmode = V4L2_TUNER_MODE_STEREO;1521 else1522 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 else1537 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 const 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 else1588 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 const 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_NAME1666 ": 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_NAME1672 ": 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 71682 1683static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,1684 const 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 (file->f_flags & O_NONBLOCK)1696 return -EWOULDBLOCK;1697 1698 if (mutex_lock_interruptible(&core->lock))1699 return -EINTR;1700 1701 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);1702 if (r)1703 goto out;1704 1705 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);1706 if (r)1707 dev_warn(radio->dev, "HW seek failed: %d\n", r);1708 1709 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,1710 WL1273_DEFAULT_SEEK_LEVEL);1711 if (r)1712 dev_warn(radio->dev, "HW seek failed: %d\n", r);1713 1714out:1715 mutex_unlock(&core->lock);1716 return r;1717}1718 1719static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,1720 const struct v4l2_modulator *modulator)1721{1722 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1723 struct wl1273_core *core = radio->core;1724 int r = 0;1725 1726 dev_dbg(radio->dev, "%s\n", __func__);1727 1728 if (modulator->index > 0)1729 return -EINVAL;1730 1731 if (mutex_lock_interruptible(&core->lock))1732 return -EINTR;1733 1734 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);1735 if (r)1736 goto out;1737 1738 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)1739 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);1740 else1741 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);1742 1743 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)1744 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);1745 else1746 r = core->write(core, WL1273_MONO_SET,1747 WL1273_RX_STEREO);1748 if (r < 0)1749 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME1750 "MONO_SET fails: %d\n", r);1751out:1752 mutex_unlock(&core->lock);1753 1754 return r;1755}1756 1757static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,1758 struct v4l2_modulator *modulator)1759{1760 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1761 struct wl1273_core *core = radio->core;1762 u16 val;1763 int r;1764 1765 dev_dbg(radio->dev, "%s\n", __func__);1766 1767 strscpy(modulator->name, WL1273_FM_DRIVER_NAME,1768 sizeof(modulator->name));1769 1770 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);1771 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);1772 1773 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |1774 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;1775 1776 if (core->mode != WL1273_MODE_TX)1777 return 0;1778 1779 if (mutex_lock_interruptible(&core->lock))1780 return -EINTR;1781 1782 r = core->read(core, WL1273_MONO_SET, &val);1783 if (r)1784 goto out;1785 1786 if (val == WL1273_TX_STEREO)1787 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;1788 else1789 modulator->txsubchans = V4L2_TUNER_SUB_MONO;1790 1791 if (radio->rds_on)1792 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;1793out:1794 mutex_unlock(&core->lock);1795 1796 return 0;1797}1798 1799static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)1800{1801 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));1802 struct wl1273_core *core = radio->core;1803 struct device *dev = radio->dev;1804 u16 val;1805 int r;1806 1807 dev_info(dev, DRIVER_DESC);1808 1809 if (core->mode == WL1273_MODE_OFF) {1810 dev_info(dev, "Mode: Off\n");1811 return 0;1812 }1813 1814 if (core->mode == WL1273_MODE_SUSPENDED) {1815 dev_info(dev, "Mode: Suspended\n");1816 return 0;1817 }1818 1819 r = core->read(core, WL1273_ASIC_ID_GET, &val);1820 if (r)1821 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);1822 else1823 dev_info(dev, "ASIC_ID: 0x%04x\n", val);1824 1825 r = core->read(core, WL1273_ASIC_VER_GET, &val);1826 if (r)1827 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);1828 else1829 dev_info(dev, "ASIC Version: 0x%04x\n", val);1830 1831 r = core->read(core, WL1273_FIRM_VER_GET, &val);1832 if (r)1833 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);1834 else1835 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);1836 1837 r = core->read(core, WL1273_BAND_SET, &val);1838 if (r)1839 dev_err(dev, "%s: Get BAND fails.\n", __func__);1840 else1841 dev_info(dev, "BAND: %d\n", val);1842 1843 if (core->mode == WL1273_MODE_TX) {1844 r = core->read(core, WL1273_PUPD_SET, &val);1845 if (r)1846 dev_err(dev, "%s: Get PUPD fails.\n", __func__);1847 else1848 dev_info(dev, "PUPD: 0x%04x\n", val);1849 1850 r = core->read(core, WL1273_CHANL_SET, &val);1851 if (r)1852 dev_err(dev, "%s: Get CHANL fails.\n", __func__);1853 else1854 dev_info(dev, "Tx frequency: %dkHz\n", val*10);1855 } else if (core->mode == WL1273_MODE_RX) {1856 int bf = radio->rangelow;1857 1858 r = core->read(core, WL1273_FREQ_SET, &val);1859 if (r)1860 dev_err(dev, "%s: Get FREQ fails.\n", __func__);1861 else1862 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);1863 1864 r = core->read(core, WL1273_MOST_MODE_SET, &val);1865 if (r)1866 dev_err(dev, "%s: Get MOST_MODE fails.\n",1867 __func__);1868 else if (val == 0)1869 dev_info(dev, "MOST_MODE: Stereo according to blend\n");1870 else if (val == 1)1871 dev_info(dev, "MOST_MODE: Force mono output\n");1872 else1873 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);1874 1875 r = core->read(core, WL1273_MOST_BLEND_SET, &val);1876 if (r)1877 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);1878 else if (val == 0)1879 dev_info(dev,1880 "MOST_BLEND: Switched blend & hysteresis.\n");1881 else if (val == 1)1882 dev_info(dev, "MOST_BLEND: Soft blend.\n");1883 else1884 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);1885 1886 r = core->read(core, WL1273_STEREO_GET, &val);1887 if (r)1888 dev_err(dev, "%s: Get STEREO fails.\n", __func__);1889 else if (val == 0)1890 dev_info(dev, "STEREO: Not detected\n");1891 else if (val == 1)1892 dev_info(dev, "STEREO: Detected\n");1893 else1894 dev_info(dev, "STEREO: Unexpected value: %d\n", val);1895 1896 r = core->read(core, WL1273_RSSI_LVL_GET, &val);1897 if (r)1898 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);1899 else1900 dev_info(dev, "RX signal strength: %d\n", (s16) val);1901 1902 r = core->read(core, WL1273_POWER_SET, &val);1903 if (r)1904 dev_err(dev, "%s: Get POWER fails.\n", __func__);1905 else1906 dev_info(dev, "POWER: 0x%04x\n", val);1907 1908 r = core->read(core, WL1273_INT_MASK_SET, &val);1909 if (r)1910 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);1911 else1912 dev_info(dev, "INT_MASK: 0x%04x\n", val);1913 1914 r = core->read(core, WL1273_RDS_SYNC_GET, &val);1915 if (r)1916 dev_err(dev, "%s: Get RDS_SYNC fails.\n",1917 __func__);1918 else if (val == 0)1919 dev_info(dev, "RDS_SYNC: Not synchronized\n");1920 1921 else if (val == 1)1922 dev_info(dev, "RDS_SYNC: Synchronized\n");1923 else1924 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);1925 1926 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);1927 if (r)1928 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",1929 __func__);1930 else1931 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);1932 1933 r = core->read(core, WL1273_VOLUME_SET, &val);1934 if (r)1935 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);1936 else1937 dev_info(dev, "VOLUME: 0x%04x\n", val);1938 }1939 1940 return 0;1941}1942 1943static void wl1273_vdev_release(struct video_device *dev)1944{1945}1946 1947static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {1948 .s_ctrl = wl1273_fm_vidioc_s_ctrl,1949 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,1950};1951 1952static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {1953 .vidioc_querycap = wl1273_fm_vidioc_querycap,1954 .vidioc_g_input = wl1273_fm_vidioc_g_input,1955 .vidioc_s_input = wl1273_fm_vidioc_s_input,1956 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,1957 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,1958 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,1959 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,1960 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,1961 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,1962 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,1963 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,1964 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,1965 .vidioc_log_status = wl1273_fm_vidioc_log_status,1966};1967 1968static const struct video_device wl1273_viddev_template = {1969 .fops = &wl1273_fops,1970 .ioctl_ops = &wl1273_ioctl_ops,1971 .name = WL1273_FM_DRIVER_NAME,1972 .release = wl1273_vdev_release,1973 .vfl_dir = VFL_DIR_TX,1974 .device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |1975 V4L2_CAP_RADIO | V4L2_CAP_AUDIO |1976 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |1977 V4L2_CAP_RDS_OUTPUT,1978};1979 1980static void wl1273_fm_radio_remove(struct platform_device *pdev)1981{1982 struct wl1273_device *radio = platform_get_drvdata(pdev);1983 struct wl1273_core *core = radio->core;1984 1985 dev_info(&pdev->dev, "%s.\n", __func__);1986 1987 free_irq(core->client->irq, radio);1988 core->pdata->free_resources();1989 1990 v4l2_ctrl_handler_free(&radio->ctrl_handler);1991 video_unregister_device(&radio->videodev);1992 v4l2_device_unregister(&radio->v4l2dev);1993}1994 1995static int wl1273_fm_radio_probe(struct platform_device *pdev)1996{1997 struct wl1273_core **core = pdev->dev.platform_data;1998 struct wl1273_device *radio;1999 struct v4l2_ctrl *ctrl;2000 int r = 0;2001 2002 pr_debug("%s\n", __func__);2003 2004 if (!core) {2005 dev_err(&pdev->dev, "No platform data.\n");2006 r = -EINVAL;2007 goto pdata_err;2008 }2009 2010 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);2011 if (!radio) {2012 r = -ENOMEM;2013 goto pdata_err;2014 }2015 2016 /* RDS buffer allocation */2017 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;2018 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);2019 if (!radio->buffer) {2020 pr_err("Cannot allocate memory for RDS buffer.\n");2021 r = -ENOMEM;2022 goto pdata_err;2023 }2024 2025 radio->core = *core;2026 radio->irq_flags = WL1273_IRQ_MASK;2027 radio->dev = &radio->core->client->dev;2028 radio->rds_on = false;2029 radio->core->mode = WL1273_MODE_OFF;2030 radio->tx_power = 118;2031 radio->core->audio_mode = WL1273_AUDIO_ANALOG;2032 radio->band = WL1273_BAND_OTHER;2033 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;2034 radio->core->channel_number = 2;2035 radio->core->volume = WL1273_DEFAULT_VOLUME;2036 radio->rx_frequency = WL1273_BAND_OTHER_LOW;2037 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;2038 radio->rangelow = WL1273_BAND_OTHER_LOW;2039 radio->rangehigh = WL1273_BAND_OTHER_HIGH;2040 radio->stereo = true;2041 radio->bus_type = "I2C";2042 2043 if (radio->core->pdata->request_resources) {2044 r = radio->core->pdata->request_resources(radio->core->client);2045 if (r) {2046 dev_err(radio->dev, WL1273_FM_DRIVER_NAME2047 ": Cannot get platform data\n");2048 goto pdata_err;2049 }2050 2051 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);2052 2053 r = request_threaded_irq(radio->core->client->irq, NULL,2054 wl1273_fm_irq_thread_handler,2055 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,2056 "wl1273-fm", radio);2057 if (r < 0) {2058 dev_err(radio->dev, WL1273_FM_DRIVER_NAME2059 ": Unable to register IRQ handler: %d\n", r);2060 goto err_request_irq;2061 }2062 } else {2063 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");2064 r = -EINVAL;2065 goto pdata_err;2066 }2067 2068 init_completion(&radio->busy);2069 init_waitqueue_head(&radio->read_queue);2070 2071 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);2072 if (!radio->write_buf) {2073 r = -ENOMEM;2074 goto write_buf_err;2075 }2076 2077 radio->dev = &pdev->dev;2078 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;2079 radio->rds_users = 0;2080 2081 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);2082 if (r) {2083 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");2084 goto write_buf_err;2085 }2086 2087 /* V4L2 configuration */2088 radio->videodev = wl1273_viddev_template;2089 2090 radio->videodev.v4l2_dev = &radio->v4l2dev;2091 2092 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);2093 2094 /* add in ascending ID order */2095 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,2096 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,2097 WL1273_DEFAULT_VOLUME);2098 2099 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,2100 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);2101 2102 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,2103 V4L2_CID_TUNE_PREEMPHASIS,2104 V4L2_PREEMPHASIS_75_uS, 0x03,2105 V4L2_PREEMPHASIS_50_uS);2106 2107 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,2108 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);2109 2110 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,2111 V4L2_CID_TUNE_ANTENNA_CAPACITOR,2112 0, 255, 1, 255);2113 if (ctrl)2114 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;2115 2116 if (radio->ctrl_handler.error) {2117 r = radio->ctrl_handler.error;2118 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);2119 goto handler_init_err;2120 }2121 2122 video_set_drvdata(&radio->videodev, radio);2123 platform_set_drvdata(pdev, radio);2124 2125 /* register video device */2126 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);2127 if (r) {2128 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME2129 ": Could not register video device\n");2130 goto handler_init_err;2131 }2132 2133 return 0;2134 2135handler_init_err:2136 v4l2_ctrl_handler_free(&radio->ctrl_handler);2137 v4l2_device_unregister(&radio->v4l2dev);2138write_buf_err:2139 free_irq(radio->core->client->irq, radio);2140err_request_irq:2141 radio->core->pdata->free_resources();2142pdata_err:2143 return r;2144}2145 2146static struct platform_driver wl1273_fm_radio_driver = {2147 .probe = wl1273_fm_radio_probe,2148 .remove_new = wl1273_fm_radio_remove,2149 .driver = {2150 .name = "wl1273_fm_radio",2151 },2152};2153 2154module_platform_driver(wl1273_fm_radio_driver);2155 2156MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");2157MODULE_DESCRIPTION(DRIVER_DESC);2158MODULE_LICENSE("GPL");2159MODULE_ALIAS("platform:wl1273_fm_radio");2160