1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Driver for the Texas Instruments WL1273 FM radio. 4 * 5 * Copyright (C) 2011 Nokia Corporation 6 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> 7 */ 8 9#include <linux/delay.h> 10#include <linux/firmware.h> 11#include <linux/interrupt.h> 12#include <linux/mfd/wl1273-core.h> 13#include <linux/slab.h> 14#include <linux/module.h> 15#include <media/v4l2-common.h> 16#include <media/v4l2-ctrls.h> 17#include <media/v4l2-device.h> 18#include <media/v4l2-ioctl.h> 19 20#define DRIVER_DESC "Wl1273 FM Radio" 21 22#define WL1273_POWER_SET_OFF 0 23#define WL1273_POWER_SET_FM BIT(0) 24#define WL1273_POWER_SET_RDS BIT(1) 25#define WL1273_POWER_SET_RETENTION BIT(4) 26 27#define WL1273_PUPD_SET_OFF 0x00 28#define WL1273_PUPD_SET_ON 0x01 29#define WL1273_PUPD_SET_RETENTION 0x10 30 31#define WL1273_FREQ(x) (x * 10000 / 625) 32#define WL1273_INV_FREQ(x) (x * 625 / 10000) 33 34/* 35 * static int radio_nr - The number of the radio device 36 * 37 * The default is 0. 38 */ 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_NAME 171 ": %s: read_rds error r == %i)\n", 172 __func__, r); 173 } 174 175 status = rds.block; 176 177 if (!WL1273_FIFO_HAS_DATA(status)) 178 break; 179 180 /* copy bits 0-2 (the block ID) to bits 3-5 */ 181 rds.block = V4L2_RDS_BLOCK_MSK & status; 182 rds.block |= rds.block << 3; 183 184 /* copy the error bits to standard positions */ 185 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) { 186 rds.block |= V4L2_RDS_BLOCK_ERROR; 187 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED; 188 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) { 189 rds.block &= ~V4L2_RDS_BLOCK_ERROR; 190 rds.block |= V4L2_RDS_BLOCK_CORRECTED; 191 } 192 193 /* copy RDS block to internal buffer */ 194 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE); 195 radio->wr_index += 3; 196 197 /* wrap write pointer */ 198 if (radio->wr_index >= radio->buf_size) 199 radio->wr_index = 0; 200 201 /* check for overflow & start over */ 202 if (radio->wr_index == radio->rd_index) { 203 dev_dbg(radio->dev, "RDS OVERFLOW"); 204 205 radio->rd_index = 0; 206 radio->wr_index = 0; 207 break; 208 } 209 } while (WL1273_FIFO_HAS_DATA(status)); 210 211 /* wake up read queue */ 212 if (radio->wr_index != radio->rd_index) 213 wake_up_interruptible(&radio->read_queue); 214 215 return 0; 216} 217 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 else 307 radio->rx_frequency = WL1273_BAND_OTHER_LOW + 308 freq * 50; 309 /* 310 * The driver works better with this msleep, 311 * the documentation doesn't mention it. 312 */ 313 usleep_range(10000, 15000); 314 315 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency); 316 317 } else { 318 r = core->read(core, WL1273_CHANL_SET, &freq); 319 if (r) 320 goto out; 321 322 dev_dbg(radio->dev, "%dkHz\n", freq); 323 } 324 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__); 325 } 326 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 else 423 f = (freq - WL1273_BAND_OTHER_LOW) / 50; 424 425 r = core->write(core, WL1273_FREQ_SET, f); 426 if (r) { 427 dev_err(radio->dev, "FREQ_SET fails\n"); 428 goto err; 429 } 430 431 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET); 432 if (r) { 433 dev_err(radio->dev, "TUNER_MODE_SET fails\n"); 434 goto err; 435 } 436 437 reinit_completion(&radio->busy); 438 439 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); 440 if (!t) { 441 dev_err(radio->dev, "%s: TIMEOUT\n", __func__); 442 return -ETIMEDOUT; 443 } 444 445 radio->rd_index = 0; 446 radio->wr_index = 0; 447 radio->rx_frequency = freq; 448 return 0; 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 else 469 freq = WL1273_BAND_OTHER_LOW + 50 * f; 470 } else { 471 r = core->read(core, WL1273_CHANL_SET, &f); 472 if (r) 473 return r; 474 475 freq = f * 10; 476 } 477 478 return freq; 479} 480 481/** 482 * wl1273_fm_upload_firmware_patch() - Upload the firmware. 483 * @radio: A pointer to the device struct. 484 * 485 * The firmware file consists of arrays of bytes where the first byte 486 * gives the array length. The first byte in the file gives the 487 * number of these arrays. 488 */ 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 else 676 r = -EINVAL; 677 678 if (r) { 679 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r); 680 goto out; 681 } 682 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 else 756 core->mode = WL1273_MODE_OFF; 757 758 break; 759 760 case WL1273_MODE_SUSPENDED: 761 r = wl1273_fm_suspend(radio); 762 if (r) 763 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r); 764 else 765 core->mode = WL1273_MODE_SUSPENDED; 766 767 break; 768 769 default: 770 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode); 771 r = -EINVAL; 772 break; 773 } 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 else 848 f = radio->rangehigh; 849 850 r = wl1273_fm_set_rx_freq(radio, f); 851 if (r) 852 goto out; 853 854 reinit_completion(&radio->busy); 855 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 856 857 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); 858 if (r) 859 goto out; 860 861 /* wait for the FR IRQ */ 862 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000))) 863 r = -ETIMEDOUT; 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 only 1050 * one gets to write to it. 1051 */ 1052 if (radio->owner && radio->owner != file) { 1053 r = -EBUSY; 1054 goto out; 1055 } 1056 radio->owner = file; 1057 1058 /* Manual Mode */ 1059 if (count > 255) 1060 val = 255; 1061 else 1062 val = count; 1063 1064 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val); 1065 1066 if (copy_from_user(radio->write_buf + 1, buf, val)) { 1067 r = -EFAULT; 1068 goto out; 1069 } 1070 1071 dev_dbg(radio->dev, "Count: %d\n", val); 1072 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf); 1073 1074 radio->write_buf[0] = WL1273_RDS_DATA_SET; 1075 core->write_data(core, radio->write_buf, val + 1); 1076 1077 r = val; 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 only 1198 * 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 1 1343#define WL1273_SPACING_100kHz 2 1344#define WL1273_SPACING_200kHz 4 1345 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 else 1443 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 0 1494#define WL1273_RDS_SYNCHRONIZED 1 1495 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 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 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 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 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_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 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 else 1741 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 else 1746 r = core->write(core, WL1273_MONO_SET, 1747 WL1273_RX_STEREO); 1748 if (r < 0) 1749 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1750 "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 else 1789 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 else 1823 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 else 1829 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 else 1835 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 else 1841 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 else 1848 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 else 1854 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 else 1862 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 else 1873 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 else 1884 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 else 1894 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 else 1900 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 else 1906 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 else 1912 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 else 1924 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 else 1931 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 else 1937 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_NAME 2047 ": 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_NAME 2059 ": 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_NAME 2129 ": 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