1 /* 2 * Driver for the Texas Instruments WL1273 FM radio. 3 * 4 * Copyright (C) 2011 Nokia Corporation 5 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * version 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/delay.h> 18 #include <linux/firmware.h> 19 #include <linux/interrupt.h> 20 #include <linux/mfd/wl1273-core.h> 21 #include <linux/slab.h> 22 #include <linux/module.h> 23 #include <media/v4l2-common.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/v4l2-device.h> 26 #include <media/v4l2-ioctl.h> 27 28 #define DRIVER_DESC "Wl1273 FM Radio" 29 30 #define WL1273_POWER_SET_OFF 0 31 #define WL1273_POWER_SET_FM BIT(0) 32 #define WL1273_POWER_SET_RDS BIT(1) 33 #define WL1273_POWER_SET_RETENTION BIT(4) 34 35 #define WL1273_PUPD_SET_OFF 0x00 36 #define WL1273_PUPD_SET_ON 0x01 37 #define WL1273_PUPD_SET_RETENTION 0x10 38 39 #define WL1273_FREQ(x) (x * 10000 / 625) 40 #define WL1273_INV_FREQ(x) (x * 625 / 10000) 41 42 /* 43 * static int radio_nr - The number of the radio device 44 * 45 * The default is 0. 46 */ 47 static int radio_nr; 48 module_param(radio_nr, int, 0); 49 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0"); 50 51 struct wl1273_device { 52 char *bus_type; 53 54 u8 forbidden; 55 unsigned int preemphasis; 56 unsigned int spacing; 57 unsigned int tx_power; 58 unsigned int rx_frequency; 59 unsigned int tx_frequency; 60 unsigned int rangelow; 61 unsigned int rangehigh; 62 unsigned int band; 63 bool stereo; 64 65 /* RDS */ 66 unsigned int rds_on; 67 68 wait_queue_head_t read_queue; 69 struct mutex lock; /* for serializing fm radio operations */ 70 struct completion busy; 71 72 unsigned char *buffer; 73 unsigned int buf_size; 74 unsigned int rd_index; 75 unsigned int wr_index; 76 77 /* Selected interrupts */ 78 u16 irq_flags; 79 u16 irq_received; 80 81 struct v4l2_ctrl_handler ctrl_handler; 82 struct v4l2_device v4l2dev; 83 struct video_device videodev; 84 struct device *dev; 85 struct wl1273_core *core; 86 struct file *owner; 87 char *write_buf; 88 unsigned int rds_users; 89 }; 90 91 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \ 92 WL1273_POW_ENB_EVENT) 93 94 /* 95 * static unsigned int rds_buf - the number of RDS buffer blocks used. 96 * 97 * The default number is 100. 98 */ 99 static unsigned int rds_buf = 100; 100 module_param(rds_buf, uint, 0); 101 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100"); 102 103 static int wl1273_fm_write_fw(struct wl1273_core *core, 104 __u8 *fw, int len) 105 { 106 struct i2c_client *client = core->client; 107 struct i2c_msg msg; 108 int i, r = 0; 109 110 msg.addr = client->addr; 111 msg.flags = 0; 112 113 for (i = 0; i <= len; i++) { 114 msg.len = fw[0]; 115 msg.buf = fw + 1; 116 117 fw += msg.len + 1; 118 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len); 119 120 r = i2c_transfer(client->adapter, &msg, 1); 121 if (r < 0 && i < len + 1) 122 break; 123 } 124 125 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i); 126 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1); 127 128 /* Last transfer always fails. */ 129 if (i == len || r == 1) 130 r = 0; 131 132 return r; 133 } 134 135 #define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status) 136 #define WL1273_RDS_CORRECTABLE_ERROR (1 << 3) 137 #define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4) 138 139 static int wl1273_fm_rds(struct wl1273_device *radio) 140 { 141 struct wl1273_core *core = radio->core; 142 struct i2c_client *client = core->client; 143 u16 val; 144 u8 b0 = WL1273_RDS_DATA_GET, status; 145 struct v4l2_rds_data rds = { 0, 0, 0 }; 146 struct i2c_msg msg[] = { 147 { 148 .addr = client->addr, 149 .flags = 0, 150 .buf = &b0, 151 .len = 1, 152 }, 153 { 154 .addr = client->addr, 155 .flags = I2C_M_RD, 156 .buf = (u8 *) &rds, 157 .len = sizeof(rds), 158 } 159 }; 160 int r; 161 162 if (core->mode != WL1273_MODE_RX) 163 return 0; 164 165 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 166 if (r) 167 return r; 168 169 if ((val & 0x01) == 0) { 170 /* RDS decoder not synchronized */ 171 return -EAGAIN; 172 } 173 174 /* copy all four RDS blocks to internal buffer */ 175 do { 176 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); 177 if (r != ARRAY_SIZE(msg)) { 178 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 179 ": %s: read_rds error r == %i)\n", 180 __func__, r); 181 } 182 183 status = rds.block; 184 185 if (!WL1273_FIFO_HAS_DATA(status)) 186 break; 187 188 /* copy bits 0-2 (the block ID) to bits 3-5 */ 189 rds.block = V4L2_RDS_BLOCK_MSK & status; 190 rds.block |= rds.block << 3; 191 192 /* copy the error bits to standard positions */ 193 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) { 194 rds.block |= V4L2_RDS_BLOCK_ERROR; 195 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED; 196 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) { 197 rds.block &= ~V4L2_RDS_BLOCK_ERROR; 198 rds.block |= V4L2_RDS_BLOCK_CORRECTED; 199 } 200 201 /* copy RDS block to internal buffer */ 202 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE); 203 radio->wr_index += 3; 204 205 /* wrap write pointer */ 206 if (radio->wr_index >= radio->buf_size) 207 radio->wr_index = 0; 208 209 /* check for overflow & start over */ 210 if (radio->wr_index == radio->rd_index) { 211 dev_dbg(radio->dev, "RDS OVERFLOW"); 212 213 radio->rd_index = 0; 214 radio->wr_index = 0; 215 break; 216 } 217 } while (WL1273_FIFO_HAS_DATA(status)); 218 219 /* wake up read queue */ 220 if (radio->wr_index != radio->rd_index) 221 wake_up_interruptible(&radio->read_queue); 222 223 return 0; 224 } 225 226 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id) 227 { 228 struct wl1273_device *radio = dev_id; 229 struct wl1273_core *core = radio->core; 230 u16 flags; 231 int r; 232 233 r = core->read(core, WL1273_FLAG_GET, &flags); 234 if (r) 235 goto out; 236 237 if (flags & WL1273_BL_EVENT) { 238 radio->irq_received = flags; 239 dev_dbg(radio->dev, "IRQ: BL\n"); 240 } 241 242 if (flags & WL1273_RDS_EVENT) { 243 msleep(200); 244 245 wl1273_fm_rds(radio); 246 } 247 248 if (flags & WL1273_BBLK_EVENT) 249 dev_dbg(radio->dev, "IRQ: BBLK\n"); 250 251 if (flags & WL1273_LSYNC_EVENT) 252 dev_dbg(radio->dev, "IRQ: LSYNC\n"); 253 254 if (flags & WL1273_LEV_EVENT) { 255 u16 level; 256 257 r = core->read(core, WL1273_RSSI_LVL_GET, &level); 258 if (r) 259 goto out; 260 261 if (level > 14) 262 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level); 263 } 264 265 if (flags & WL1273_IFFR_EVENT) 266 dev_dbg(radio->dev, "IRQ: IFFR\n"); 267 268 if (flags & WL1273_PI_EVENT) 269 dev_dbg(radio->dev, "IRQ: PI\n"); 270 271 if (flags & WL1273_PD_EVENT) 272 dev_dbg(radio->dev, "IRQ: PD\n"); 273 274 if (flags & WL1273_STIC_EVENT) 275 dev_dbg(radio->dev, "IRQ: STIC\n"); 276 277 if (flags & WL1273_MAL_EVENT) 278 dev_dbg(radio->dev, "IRQ: MAL\n"); 279 280 if (flags & WL1273_POW_ENB_EVENT) { 281 complete(&radio->busy); 282 dev_dbg(radio->dev, "NOT BUSY\n"); 283 dev_dbg(radio->dev, "IRQ: POW_ENB\n"); 284 } 285 286 if (flags & WL1273_SCAN_OVER_EVENT) 287 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n"); 288 289 if (flags & WL1273_ERROR_EVENT) 290 dev_dbg(radio->dev, "IRQ: ERROR\n"); 291 292 if (flags & WL1273_FR_EVENT) { 293 u16 freq; 294 295 dev_dbg(radio->dev, "IRQ: FR:\n"); 296 297 if (core->mode == WL1273_MODE_RX) { 298 r = core->write(core, WL1273_TUNER_MODE_SET, 299 TUNER_MODE_STOP_SEARCH); 300 if (r) { 301 dev_err(radio->dev, 302 "%s: TUNER_MODE_SET fails: %d\n", 303 __func__, r); 304 goto out; 305 } 306 307 r = core->read(core, WL1273_FREQ_SET, &freq); 308 if (r) 309 goto out; 310 311 if (radio->band == WL1273_BAND_JAPAN) 312 radio->rx_frequency = WL1273_BAND_JAPAN_LOW + 313 freq * 50; 314 else 315 radio->rx_frequency = WL1273_BAND_OTHER_LOW + 316 freq * 50; 317 /* 318 * The driver works better with this msleep, 319 * the documentation doesn't mention it. 320 */ 321 usleep_range(10000, 15000); 322 323 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency); 324 325 } else { 326 r = core->read(core, WL1273_CHANL_SET, &freq); 327 if (r) 328 goto out; 329 330 dev_dbg(radio->dev, "%dkHz\n", freq); 331 } 332 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__); 333 } 334 335 out: 336 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 337 complete(&radio->busy); 338 339 return IRQ_HANDLED; 340 } 341 342 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq) 343 { 344 struct wl1273_core *core = radio->core; 345 int r = 0; 346 unsigned long t; 347 348 if (freq < WL1273_BAND_TX_LOW) { 349 dev_err(radio->dev, 350 "Frequency out of range: %d < %d\n", freq, 351 WL1273_BAND_TX_LOW); 352 return -ERANGE; 353 } 354 355 if (freq > WL1273_BAND_TX_HIGH) { 356 dev_err(radio->dev, 357 "Frequency out of range: %d > %d\n", freq, 358 WL1273_BAND_TX_HIGH); 359 return -ERANGE; 360 } 361 362 /* 363 * The driver works better with this sleep, 364 * the documentation doesn't mention it. 365 */ 366 usleep_range(5000, 10000); 367 368 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq); 369 370 /* Set the current tx channel */ 371 r = core->write(core, WL1273_CHANL_SET, freq / 10); 372 if (r) 373 return r; 374 375 reinit_completion(&radio->busy); 376 377 /* wait for the FR IRQ */ 378 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); 379 if (!t) 380 return -ETIMEDOUT; 381 382 dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t); 383 384 /* Enable the output power */ 385 r = core->write(core, WL1273_POWER_ENB_SET, 1); 386 if (r) 387 return r; 388 389 reinit_completion(&radio->busy); 390 391 /* wait for the POWER_ENB IRQ */ 392 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 393 if (!t) 394 return -ETIMEDOUT; 395 396 radio->tx_frequency = freq; 397 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t); 398 399 return 0; 400 } 401 402 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq) 403 { 404 struct wl1273_core *core = radio->core; 405 int r, f; 406 unsigned long t; 407 408 if (freq < radio->rangelow) { 409 dev_err(radio->dev, 410 "Frequency out of range: %d < %d\n", freq, 411 radio->rangelow); 412 r = -ERANGE; 413 goto err; 414 } 415 416 if (freq > radio->rangehigh) { 417 dev_err(radio->dev, 418 "Frequency out of range: %d > %d\n", freq, 419 radio->rangehigh); 420 r = -ERANGE; 421 goto err; 422 } 423 424 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq); 425 426 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 427 428 if (radio->band == WL1273_BAND_JAPAN) 429 f = (freq - WL1273_BAND_JAPAN_LOW) / 50; 430 else 431 f = (freq - WL1273_BAND_OTHER_LOW) / 50; 432 433 r = core->write(core, WL1273_FREQ_SET, f); 434 if (r) { 435 dev_err(radio->dev, "FREQ_SET fails\n"); 436 goto err; 437 } 438 439 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET); 440 if (r) { 441 dev_err(radio->dev, "TUNER_MODE_SET fails\n"); 442 goto err; 443 } 444 445 reinit_completion(&radio->busy); 446 447 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); 448 if (!t) { 449 dev_err(radio->dev, "%s: TIMEOUT\n", __func__); 450 return -ETIMEDOUT; 451 } 452 453 radio->rd_index = 0; 454 radio->wr_index = 0; 455 radio->rx_frequency = freq; 456 return 0; 457 err: 458 return r; 459 } 460 461 static int wl1273_fm_get_freq(struct wl1273_device *radio) 462 { 463 struct wl1273_core *core = radio->core; 464 unsigned int freq; 465 u16 f; 466 int r; 467 468 if (core->mode == WL1273_MODE_RX) { 469 r = core->read(core, WL1273_FREQ_SET, &f); 470 if (r) 471 return r; 472 473 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f); 474 if (radio->band == WL1273_BAND_JAPAN) 475 freq = WL1273_BAND_JAPAN_LOW + 50 * f; 476 else 477 freq = WL1273_BAND_OTHER_LOW + 50 * f; 478 } else { 479 r = core->read(core, WL1273_CHANL_SET, &f); 480 if (r) 481 return r; 482 483 freq = f * 10; 484 } 485 486 return freq; 487 } 488 489 /** 490 * wl1273_fm_upload_firmware_patch() - Upload the firmware. 491 * @radio: A pointer to the device struct. 492 * 493 * The firmware file consists of arrays of bytes where the first byte 494 * gives the array length. The first byte in the file gives the 495 * number of these arrays. 496 */ 497 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio) 498 { 499 struct wl1273_core *core = radio->core; 500 unsigned int packet_num; 501 const struct firmware *fw_p; 502 const char *fw_name = "radio-wl1273-fw.bin"; 503 struct device *dev = radio->dev; 504 __u8 *ptr; 505 int r; 506 507 dev_dbg(dev, "%s:\n", __func__); 508 509 /* 510 * Uploading the firmware patch is not always necessary, 511 * so we only print an info message. 512 */ 513 if (request_firmware(&fw_p, fw_name, dev)) { 514 dev_info(dev, "%s - %s not found\n", __func__, fw_name); 515 516 return 0; 517 } 518 519 ptr = (__u8 *) fw_p->data; 520 packet_num = ptr[0]; 521 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num); 522 523 r = wl1273_fm_write_fw(core, ptr + 1, packet_num); 524 if (r) { 525 dev_err(dev, "FW upload error: %d\n", r); 526 goto out; 527 } 528 529 /* ignore possible error here */ 530 core->write(core, WL1273_RESET, 0); 531 532 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r); 533 out: 534 release_firmware(fw_p); 535 return r; 536 } 537 538 static int wl1273_fm_stop(struct wl1273_device *radio) 539 { 540 struct wl1273_core *core = radio->core; 541 542 if (core->mode == WL1273_MODE_RX) { 543 int r = core->write(core, WL1273_POWER_SET, 544 WL1273_POWER_SET_OFF); 545 if (r) 546 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", 547 __func__, r); 548 } else if (core->mode == WL1273_MODE_TX) { 549 int r = core->write(core, WL1273_PUPD_SET, 550 WL1273_PUPD_SET_OFF); 551 if (r) 552 dev_err(radio->dev, 553 "%s: PUPD_SET fails: %d\n", __func__, r); 554 } 555 556 if (core->pdata->disable) { 557 core->pdata->disable(); 558 dev_dbg(radio->dev, "Back to reset\n"); 559 } 560 561 return 0; 562 } 563 564 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode) 565 { 566 struct wl1273_core *core = radio->core; 567 struct wl1273_fm_platform_data *pdata = core->pdata; 568 struct device *dev = radio->dev; 569 int r = -EINVAL; 570 571 if (pdata->enable && core->mode == WL1273_MODE_OFF) { 572 dev_dbg(radio->dev, "Out of reset\n"); 573 574 pdata->enable(); 575 msleep(250); 576 } 577 578 if (new_mode == WL1273_MODE_RX) { 579 u16 val = WL1273_POWER_SET_FM; 580 581 if (radio->rds_on) 582 val |= WL1273_POWER_SET_RDS; 583 584 /* If this fails try again */ 585 r = core->write(core, WL1273_POWER_SET, val); 586 if (r) { 587 msleep(100); 588 589 r = core->write(core, WL1273_POWER_SET, val); 590 if (r) { 591 dev_err(dev, "%s: POWER_SET fails\n", __func__); 592 goto fail; 593 } 594 } 595 596 /* rds buffer configuration */ 597 radio->wr_index = 0; 598 radio->rd_index = 0; 599 600 } else if (new_mode == WL1273_MODE_TX) { 601 /* If this fails try again once */ 602 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON); 603 if (r) { 604 msleep(100); 605 r = core->write(core, WL1273_PUPD_SET, 606 WL1273_PUPD_SET_ON); 607 if (r) { 608 dev_err(dev, "%s: PUPD_SET fails\n", __func__); 609 goto fail; 610 } 611 } 612 613 if (radio->rds_on) { 614 r = core->write(core, WL1273_RDS_DATA_ENB, 1); 615 if (r) { 616 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n", 617 __func__); 618 goto fail; 619 } 620 } else { 621 r = core->write(core, WL1273_RDS_DATA_ENB, 0); 622 if (r) { 623 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n", 624 __func__); 625 goto fail; 626 } 627 } 628 } else { 629 dev_warn(dev, "%s: Illegal mode.\n", __func__); 630 } 631 632 if (core->mode == WL1273_MODE_OFF) { 633 r = wl1273_fm_upload_firmware_patch(radio); 634 if (r) 635 dev_warn(dev, "Firmware upload failed.\n"); 636 637 /* 638 * Sometimes the chip is in a wrong power state at this point. 639 * So we set the power once again. 640 */ 641 if (new_mode == WL1273_MODE_RX) { 642 u16 val = WL1273_POWER_SET_FM; 643 644 if (radio->rds_on) 645 val |= WL1273_POWER_SET_RDS; 646 647 r = core->write(core, WL1273_POWER_SET, val); 648 if (r) { 649 dev_err(dev, "%s: POWER_SET fails\n", __func__); 650 goto fail; 651 } 652 } else if (new_mode == WL1273_MODE_TX) { 653 r = core->write(core, WL1273_PUPD_SET, 654 WL1273_PUPD_SET_ON); 655 if (r) { 656 dev_err(dev, "%s: PUPD_SET fails\n", __func__); 657 goto fail; 658 } 659 } 660 } 661 662 return 0; 663 fail: 664 if (pdata->disable) 665 pdata->disable(); 666 667 dev_dbg(dev, "%s: return: %d\n", __func__, r); 668 return r; 669 } 670 671 static int wl1273_fm_suspend(struct wl1273_device *radio) 672 { 673 struct wl1273_core *core = radio->core; 674 int r; 675 676 /* Cannot go from OFF to SUSPENDED */ 677 if (core->mode == WL1273_MODE_RX) 678 r = core->write(core, WL1273_POWER_SET, 679 WL1273_POWER_SET_RETENTION); 680 else if (core->mode == WL1273_MODE_TX) 681 r = core->write(core, WL1273_PUPD_SET, 682 WL1273_PUPD_SET_RETENTION); 683 else 684 r = -EINVAL; 685 686 if (r) { 687 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r); 688 goto out; 689 } 690 691 out: 692 return r; 693 } 694 695 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode) 696 { 697 struct wl1273_core *core = radio->core; 698 struct device *dev = radio->dev; 699 int old_mode; 700 int r; 701 702 dev_dbg(dev, "%s\n", __func__); 703 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden); 704 705 old_mode = core->mode; 706 if (mode & radio->forbidden) { 707 r = -EPERM; 708 goto out; 709 } 710 711 switch (mode) { 712 case WL1273_MODE_RX: 713 case WL1273_MODE_TX: 714 r = wl1273_fm_start(radio, mode); 715 if (r) { 716 dev_err(dev, "%s: Cannot start.\n", __func__); 717 wl1273_fm_stop(radio); 718 goto out; 719 } 720 721 core->mode = mode; 722 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 723 if (r) { 724 dev_err(dev, "INT_MASK_SET fails.\n"); 725 goto out; 726 } 727 728 /* remember previous settings */ 729 if (mode == WL1273_MODE_RX) { 730 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 731 if (r) { 732 dev_err(dev, "set freq fails: %d.\n", r); 733 goto out; 734 } 735 736 r = core->set_volume(core, core->volume); 737 if (r) { 738 dev_err(dev, "set volume fails: %d.\n", r); 739 goto out; 740 } 741 742 dev_dbg(dev, "%s: Set vol: %d.\n", __func__, 743 core->volume); 744 } else { 745 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency); 746 if (r) { 747 dev_err(dev, "set freq fails: %d.\n", r); 748 goto out; 749 } 750 } 751 752 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__); 753 754 r = core->set_audio(core, core->audio_mode); 755 if (r) 756 dev_err(dev, "Cannot set audio mode.\n"); 757 break; 758 759 case WL1273_MODE_OFF: 760 r = wl1273_fm_stop(radio); 761 if (r) 762 dev_err(dev, "%s: Off fails: %d\n", __func__, r); 763 else 764 core->mode = WL1273_MODE_OFF; 765 766 break; 767 768 case WL1273_MODE_SUSPENDED: 769 r = wl1273_fm_suspend(radio); 770 if (r) 771 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r); 772 else 773 core->mode = WL1273_MODE_SUSPENDED; 774 775 break; 776 777 default: 778 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode); 779 r = -EINVAL; 780 break; 781 } 782 out: 783 if (r) 784 core->mode = old_mode; 785 786 return r; 787 } 788 789 static int wl1273_fm_set_seek(struct wl1273_device *radio, 790 unsigned int wrap_around, 791 unsigned int seek_upward, 792 int level) 793 { 794 struct wl1273_core *core = radio->core; 795 int r = 0; 796 unsigned int dir = (seek_upward == 0) ? 0 : 1; 797 unsigned int f; 798 799 f = radio->rx_frequency; 800 dev_dbg(radio->dev, "rx_frequency: %d\n", f); 801 802 if (dir && f + radio->spacing <= radio->rangehigh) 803 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing); 804 else if (dir && wrap_around) 805 r = wl1273_fm_set_rx_freq(radio, radio->rangelow); 806 else if (f - radio->spacing >= radio->rangelow) 807 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing); 808 else if (wrap_around) 809 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh); 810 811 if (r) 812 goto out; 813 814 if (level < SCHAR_MIN || level > SCHAR_MAX) 815 return -EINVAL; 816 817 reinit_completion(&radio->busy); 818 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 819 820 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 821 if (r) 822 goto out; 823 824 dev_dbg(radio->dev, "%s\n", __func__); 825 826 r = core->write(core, WL1273_SEARCH_LVL_SET, level); 827 if (r) 828 goto out; 829 830 r = core->write(core, WL1273_SEARCH_DIR_SET, dir); 831 if (r) 832 goto out; 833 834 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); 835 if (r) 836 goto out; 837 838 /* wait for the FR IRQ */ 839 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 840 if (!(radio->irq_received & WL1273_BL_EVENT)) { 841 r = -ETIMEDOUT; 842 goto out; 843 } 844 845 radio->irq_received &= ~WL1273_BL_EVENT; 846 847 if (!wrap_around) 848 goto out; 849 850 /* Wrap around */ 851 dev_dbg(radio->dev, "Wrap around in HW seek.\n"); 852 853 if (seek_upward) 854 f = radio->rangelow; 855 else 856 f = radio->rangehigh; 857 858 r = wl1273_fm_set_rx_freq(radio, f); 859 if (r) 860 goto out; 861 862 reinit_completion(&radio->busy); 863 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 864 865 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); 866 if (r) 867 goto out; 868 869 /* wait for the FR IRQ */ 870 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000))) 871 r = -ETIMEDOUT; 872 out: 873 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r); 874 return r; 875 } 876 877 /** 878 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value. 879 * @radio: A pointer to the device struct. 880 */ 881 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio) 882 { 883 struct wl1273_core *core = radio->core; 884 struct device *dev = radio->dev; 885 u16 val; 886 int r; 887 888 if (core->mode == WL1273_MODE_OFF || 889 core->mode == WL1273_MODE_SUSPENDED) 890 return -EPERM; 891 892 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val); 893 if (r) { 894 dev_err(dev, "%s: read error: %d\n", __func__, r); 895 goto out; 896 } 897 898 out: 899 return val; 900 } 901 902 /** 903 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value. 904 * @radio: A pointer to the device struct. 905 * @preemphasis: The new pre-amphasis value. 906 * 907 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED, 908 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS. 909 */ 910 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio, 911 unsigned int preemphasis) 912 { 913 struct wl1273_core *core = radio->core; 914 int r; 915 u16 em; 916 917 if (core->mode == WL1273_MODE_OFF || 918 core->mode == WL1273_MODE_SUSPENDED) 919 return -EPERM; 920 921 mutex_lock(&core->lock); 922 923 switch (preemphasis) { 924 case V4L2_PREEMPHASIS_DISABLED: 925 em = 1; 926 break; 927 case V4L2_PREEMPHASIS_50_uS: 928 em = 0; 929 break; 930 case V4L2_PREEMPHASIS_75_uS: 931 em = 2; 932 break; 933 default: 934 r = -EINVAL; 935 goto out; 936 } 937 938 r = core->write(core, WL1273_PREMPH_SET, em); 939 if (r) 940 goto out; 941 942 radio->preemphasis = preemphasis; 943 944 out: 945 mutex_unlock(&core->lock); 946 return r; 947 } 948 949 static int wl1273_fm_rds_on(struct wl1273_device *radio) 950 { 951 struct wl1273_core *core = radio->core; 952 int r; 953 954 dev_dbg(radio->dev, "%s\n", __func__); 955 if (radio->rds_on) 956 return 0; 957 958 r = core->write(core, WL1273_POWER_SET, 959 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS); 960 if (r) 961 goto out; 962 963 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 964 if (r) 965 dev_err(radio->dev, "set freq fails: %d.\n", r); 966 out: 967 return r; 968 } 969 970 static int wl1273_fm_rds_off(struct wl1273_device *radio) 971 { 972 struct wl1273_core *core = radio->core; 973 int r; 974 975 if (!radio->rds_on) 976 return 0; 977 978 radio->irq_flags &= ~WL1273_RDS_EVENT; 979 980 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 981 if (r) 982 goto out; 983 984 /* Service pending read */ 985 wake_up_interruptible(&radio->read_queue); 986 987 dev_dbg(radio->dev, "%s\n", __func__); 988 989 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM); 990 if (r) 991 goto out; 992 993 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 994 if (r) 995 dev_err(radio->dev, "set freq fails: %d.\n", r); 996 out: 997 dev_dbg(radio->dev, "%s: exiting...\n", __func__); 998 999 return r; 1000 } 1001 1002 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode) 1003 { 1004 int r = 0; 1005 struct wl1273_core *core = radio->core; 1006 1007 if (core->mode == WL1273_MODE_OFF || 1008 core->mode == WL1273_MODE_SUSPENDED) 1009 return -EPERM; 1010 1011 if (new_mode == WL1273_RDS_RESET) { 1012 r = core->write(core, WL1273_RDS_CNTRL_SET, 1); 1013 return r; 1014 } 1015 1016 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) { 1017 r = core->write(core, WL1273_RDS_DATA_ENB, 0); 1018 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) { 1019 r = core->write(core, WL1273_RDS_DATA_ENB, 1); 1020 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) { 1021 r = wl1273_fm_rds_off(radio); 1022 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) { 1023 r = wl1273_fm_rds_on(radio); 1024 } else { 1025 dev_err(radio->dev, "%s: Unknown mode: %d\n", 1026 __func__, new_mode); 1027 r = -EINVAL; 1028 } 1029 1030 if (!r) 1031 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false; 1032 1033 return r; 1034 } 1035 1036 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf, 1037 size_t count, loff_t *ppos) 1038 { 1039 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1040 struct wl1273_core *core = radio->core; 1041 u16 val; 1042 int r; 1043 1044 dev_dbg(radio->dev, "%s\n", __func__); 1045 1046 if (core->mode != WL1273_MODE_TX) 1047 return count; 1048 1049 if (radio->rds_users == 0) { 1050 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1051 return 0; 1052 } 1053 1054 if (mutex_lock_interruptible(&core->lock)) 1055 return -EINTR; 1056 /* 1057 * Multiple processes can open the device, but only 1058 * one gets to write to it. 1059 */ 1060 if (radio->owner && radio->owner != file) { 1061 r = -EBUSY; 1062 goto out; 1063 } 1064 radio->owner = file; 1065 1066 /* Manual Mode */ 1067 if (count > 255) 1068 val = 255; 1069 else 1070 val = count; 1071 1072 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val); 1073 1074 if (copy_from_user(radio->write_buf + 1, buf, val)) { 1075 r = -EFAULT; 1076 goto out; 1077 } 1078 1079 dev_dbg(radio->dev, "Count: %d\n", val); 1080 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf); 1081 1082 radio->write_buf[0] = WL1273_RDS_DATA_SET; 1083 core->write_data(core, radio->write_buf, val + 1); 1084 1085 r = val; 1086 out: 1087 mutex_unlock(&core->lock); 1088 1089 return r; 1090 } 1091 1092 static __poll_t wl1273_fm_fops_poll(struct file *file, 1093 struct poll_table_struct *pts) 1094 { 1095 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1096 struct wl1273_core *core = radio->core; 1097 1098 if (radio->owner && radio->owner != file) 1099 return -EBUSY; 1100 1101 radio->owner = file; 1102 1103 if (core->mode == WL1273_MODE_RX) { 1104 poll_wait(file, &radio->read_queue, pts); 1105 1106 if (radio->rd_index != radio->wr_index) 1107 return EPOLLIN | EPOLLRDNORM; 1108 1109 } else if (core->mode == WL1273_MODE_TX) { 1110 return EPOLLOUT | EPOLLWRNORM; 1111 } 1112 1113 return 0; 1114 } 1115 1116 static int wl1273_fm_fops_open(struct file *file) 1117 { 1118 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1119 struct wl1273_core *core = radio->core; 1120 int r = 0; 1121 1122 dev_dbg(radio->dev, "%s\n", __func__); 1123 1124 if (core->mode == WL1273_MODE_RX && radio->rds_on && 1125 !radio->rds_users) { 1126 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode); 1127 1128 if (mutex_lock_interruptible(&core->lock)) 1129 return -EINTR; 1130 1131 radio->irq_flags |= WL1273_RDS_EVENT; 1132 1133 r = core->write(core, WL1273_INT_MASK_SET, 1134 radio->irq_flags); 1135 if (r) { 1136 mutex_unlock(&core->lock); 1137 goto out; 1138 } 1139 1140 radio->rds_users++; 1141 1142 mutex_unlock(&core->lock); 1143 } 1144 out: 1145 return r; 1146 } 1147 1148 static int wl1273_fm_fops_release(struct file *file) 1149 { 1150 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1151 struct wl1273_core *core = radio->core; 1152 int r = 0; 1153 1154 dev_dbg(radio->dev, "%s\n", __func__); 1155 1156 if (radio->rds_users > 0) { 1157 radio->rds_users--; 1158 if (radio->rds_users == 0) { 1159 if (mutex_lock_interruptible(&core->lock)) 1160 return -EINTR; 1161 1162 radio->irq_flags &= ~WL1273_RDS_EVENT; 1163 1164 if (core->mode == WL1273_MODE_RX) { 1165 r = core->write(core, 1166 WL1273_INT_MASK_SET, 1167 radio->irq_flags); 1168 if (r) { 1169 mutex_unlock(&core->lock); 1170 goto out; 1171 } 1172 } 1173 mutex_unlock(&core->lock); 1174 } 1175 } 1176 1177 if (file == radio->owner) 1178 radio->owner = NULL; 1179 out: 1180 return r; 1181 } 1182 1183 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf, 1184 size_t count, loff_t *ppos) 1185 { 1186 int r = 0; 1187 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1188 struct wl1273_core *core = radio->core; 1189 unsigned int block_count = 0; 1190 u16 val; 1191 1192 dev_dbg(radio->dev, "%s\n", __func__); 1193 1194 if (core->mode != WL1273_MODE_RX) 1195 return 0; 1196 1197 if (radio->rds_users == 0) { 1198 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1199 return 0; 1200 } 1201 1202 if (mutex_lock_interruptible(&core->lock)) 1203 return -EINTR; 1204 1205 /* 1206 * Multiple processes can open the device, but only 1207 * one at a time gets read access. 1208 */ 1209 if (radio->owner && radio->owner != file) { 1210 r = -EBUSY; 1211 goto out; 1212 } 1213 radio->owner = file; 1214 1215 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1216 if (r) { 1217 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__); 1218 goto out; 1219 } else if (val == 0) { 1220 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n"); 1221 r = -ENODATA; 1222 goto out; 1223 } 1224 1225 /* block if no new data available */ 1226 while (radio->wr_index == radio->rd_index) { 1227 if (file->f_flags & O_NONBLOCK) { 1228 r = -EWOULDBLOCK; 1229 goto out; 1230 } 1231 1232 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__); 1233 if (wait_event_interruptible(radio->read_queue, 1234 radio->wr_index != 1235 radio->rd_index) < 0) { 1236 r = -EINTR; 1237 goto out; 1238 } 1239 } 1240 1241 /* calculate block count from byte count */ 1242 count /= RDS_BLOCK_SIZE; 1243 1244 /* copy RDS blocks from the internal buffer and to user buffer */ 1245 while (block_count < count) { 1246 if (radio->rd_index == radio->wr_index) 1247 break; 1248 1249 /* always transfer complete RDS blocks */ 1250 if (copy_to_user(buf, &radio->buffer[radio->rd_index], 1251 RDS_BLOCK_SIZE)) 1252 break; 1253 1254 /* increment and wrap the read pointer */ 1255 radio->rd_index += RDS_BLOCK_SIZE; 1256 if (radio->rd_index >= radio->buf_size) 1257 radio->rd_index = 0; 1258 1259 /* increment counters */ 1260 block_count++; 1261 buf += RDS_BLOCK_SIZE; 1262 r += RDS_BLOCK_SIZE; 1263 } 1264 1265 out: 1266 dev_dbg(radio->dev, "%s: exit\n", __func__); 1267 mutex_unlock(&core->lock); 1268 1269 return r; 1270 } 1271 1272 static const struct v4l2_file_operations wl1273_fops = { 1273 .owner = THIS_MODULE, 1274 .read = wl1273_fm_fops_read, 1275 .write = wl1273_fm_fops_write, 1276 .poll = wl1273_fm_fops_poll, 1277 .unlocked_ioctl = video_ioctl2, 1278 .open = wl1273_fm_fops_open, 1279 .release = wl1273_fm_fops_release, 1280 }; 1281 1282 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv, 1283 struct v4l2_capability *capability) 1284 { 1285 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1286 1287 dev_dbg(radio->dev, "%s\n", __func__); 1288 1289 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME, 1290 sizeof(capability->driver)); 1291 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio", 1292 sizeof(capability->card)); 1293 strlcpy(capability->bus_info, radio->bus_type, 1294 sizeof(capability->bus_info)); 1295 1296 capability->device_caps = V4L2_CAP_HW_FREQ_SEEK | 1297 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO | 1298 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR | 1299 V4L2_CAP_RDS_OUTPUT; 1300 capability->capabilities = capability->device_caps | 1301 V4L2_CAP_DEVICE_CAPS; 1302 1303 return 0; 1304 } 1305 1306 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv, 1307 unsigned int *i) 1308 { 1309 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1310 1311 dev_dbg(radio->dev, "%s\n", __func__); 1312 1313 *i = 0; 1314 1315 return 0; 1316 } 1317 1318 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv, 1319 unsigned int i) 1320 { 1321 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1322 1323 dev_dbg(radio->dev, "%s\n", __func__); 1324 1325 if (i != 0) 1326 return -EINVAL; 1327 1328 return 0; 1329 } 1330 1331 /** 1332 * wl1273_fm_set_tx_power() - Set the transmission power value. 1333 * @radio: A pointer to the device struct. 1334 * @power: The new power value. 1335 */ 1336 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power) 1337 { 1338 struct wl1273_core *core = radio->core; 1339 int r; 1340 1341 if (core->mode == WL1273_MODE_OFF || 1342 core->mode == WL1273_MODE_SUSPENDED) 1343 return -EPERM; 1344 1345 mutex_lock(&core->lock); 1346 1347 /* Convert the dBuV value to chip presentation */ 1348 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power); 1349 if (r) 1350 goto out; 1351 1352 radio->tx_power = power; 1353 1354 out: 1355 mutex_unlock(&core->lock); 1356 return r; 1357 } 1358 1359 #define WL1273_SPACING_50kHz 1 1360 #define WL1273_SPACING_100kHz 2 1361 #define WL1273_SPACING_200kHz 4 1362 1363 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio, 1364 unsigned int spacing) 1365 { 1366 struct wl1273_core *core = radio->core; 1367 int r; 1368 1369 if (spacing == 0) { 1370 r = core->write(core, WL1273_SCAN_SPACING_SET, 1371 WL1273_SPACING_100kHz); 1372 radio->spacing = 100; 1373 } else if (spacing - 50000 < 25000) { 1374 r = core->write(core, WL1273_SCAN_SPACING_SET, 1375 WL1273_SPACING_50kHz); 1376 radio->spacing = 50; 1377 } else if (spacing - 100000 < 50000) { 1378 r = core->write(core, WL1273_SCAN_SPACING_SET, 1379 WL1273_SPACING_100kHz); 1380 radio->spacing = 100; 1381 } else { 1382 r = core->write(core, WL1273_SCAN_SPACING_SET, 1383 WL1273_SPACING_200kHz); 1384 radio->spacing = 200; 1385 } 1386 1387 return r; 1388 } 1389 1390 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1391 { 1392 struct wl1273_device *radio = ctrl->priv; 1393 struct wl1273_core *core = radio->core; 1394 1395 dev_dbg(radio->dev, "%s\n", __func__); 1396 1397 if (mutex_lock_interruptible(&core->lock)) 1398 return -EINTR; 1399 1400 switch (ctrl->id) { 1401 case V4L2_CID_TUNE_ANTENNA_CAPACITOR: 1402 ctrl->val = wl1273_fm_get_tx_ctune(radio); 1403 break; 1404 1405 default: 1406 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1407 __func__, ctrl->id); 1408 break; 1409 } 1410 1411 mutex_unlock(&core->lock); 1412 1413 return 0; 1414 } 1415 1416 #define WL1273_MUTE_SOFT_ENABLE (1 << 0) 1417 #define WL1273_MUTE_AC (1 << 1) 1418 #define WL1273_MUTE_HARD_LEFT (1 << 2) 1419 #define WL1273_MUTE_HARD_RIGHT (1 << 3) 1420 #define WL1273_MUTE_SOFT_FORCE (1 << 4) 1421 1422 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl) 1423 { 1424 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler); 1425 } 1426 1427 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl) 1428 { 1429 struct wl1273_device *radio = to_radio(ctrl); 1430 struct wl1273_core *core = radio->core; 1431 int r = 0; 1432 1433 dev_dbg(radio->dev, "%s\n", __func__); 1434 1435 switch (ctrl->id) { 1436 case V4L2_CID_AUDIO_MUTE: 1437 if (mutex_lock_interruptible(&core->lock)) 1438 return -EINTR; 1439 1440 if (core->mode == WL1273_MODE_RX && ctrl->val) 1441 r = core->write(core, 1442 WL1273_MUTE_STATUS_SET, 1443 WL1273_MUTE_HARD_LEFT | 1444 WL1273_MUTE_HARD_RIGHT); 1445 else if (core->mode == WL1273_MODE_RX) 1446 r = core->write(core, 1447 WL1273_MUTE_STATUS_SET, 0x0); 1448 else if (core->mode == WL1273_MODE_TX && ctrl->val) 1449 r = core->write(core, WL1273_MUTE, 1); 1450 else if (core->mode == WL1273_MODE_TX) 1451 r = core->write(core, WL1273_MUTE, 0); 1452 1453 mutex_unlock(&core->lock); 1454 break; 1455 1456 case V4L2_CID_AUDIO_VOLUME: 1457 if (ctrl->val == 0) 1458 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF); 1459 else 1460 r = core->set_volume(core, core->volume); 1461 break; 1462 1463 case V4L2_CID_TUNE_PREEMPHASIS: 1464 r = wl1273_fm_set_preemphasis(radio, ctrl->val); 1465 break; 1466 1467 case V4L2_CID_TUNE_POWER_LEVEL: 1468 r = wl1273_fm_set_tx_power(radio, ctrl->val); 1469 break; 1470 1471 default: 1472 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1473 __func__, ctrl->id); 1474 break; 1475 } 1476 1477 dev_dbg(radio->dev, "%s\n", __func__); 1478 return r; 1479 } 1480 1481 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv, 1482 struct v4l2_audio *audio) 1483 { 1484 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1485 1486 dev_dbg(radio->dev, "%s\n", __func__); 1487 1488 if (audio->index > 1) 1489 return -EINVAL; 1490 1491 strlcpy(audio->name, "Radio", sizeof(audio->name)); 1492 audio->capability = V4L2_AUDCAP_STEREO; 1493 1494 return 0; 1495 } 1496 1497 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv, 1498 const struct v4l2_audio *audio) 1499 { 1500 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1501 1502 dev_dbg(radio->dev, "%s\n", __func__); 1503 1504 if (audio->index != 0) 1505 return -EINVAL; 1506 1507 return 0; 1508 } 1509 1510 #define WL1273_RDS_NOT_SYNCHRONIZED 0 1511 #define WL1273_RDS_SYNCHRONIZED 1 1512 1513 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv, 1514 struct v4l2_tuner *tuner) 1515 { 1516 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1517 struct wl1273_core *core = radio->core; 1518 u16 val; 1519 int r; 1520 1521 dev_dbg(radio->dev, "%s\n", __func__); 1522 1523 if (tuner->index > 0) 1524 return -EINVAL; 1525 1526 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name)); 1527 tuner->type = V4L2_TUNER_RADIO; 1528 1529 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1530 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1531 1532 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1533 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO | 1534 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP; 1535 1536 if (radio->stereo) 1537 tuner->audmode = V4L2_TUNER_MODE_STEREO; 1538 else 1539 tuner->audmode = V4L2_TUNER_MODE_MONO; 1540 1541 if (core->mode != WL1273_MODE_RX) 1542 return 0; 1543 1544 if (mutex_lock_interruptible(&core->lock)) 1545 return -EINTR; 1546 1547 r = core->read(core, WL1273_STEREO_GET, &val); 1548 if (r) 1549 goto out; 1550 1551 if (val == 1) 1552 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; 1553 else 1554 tuner->rxsubchans = V4L2_TUNER_SUB_MONO; 1555 1556 r = core->read(core, WL1273_RSSI_LVL_GET, &val); 1557 if (r) 1558 goto out; 1559 1560 tuner->signal = (s16) val; 1561 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal); 1562 1563 tuner->afc = 0; 1564 1565 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1566 if (r) 1567 goto out; 1568 1569 if (val == WL1273_RDS_SYNCHRONIZED) 1570 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; 1571 out: 1572 mutex_unlock(&core->lock); 1573 1574 return r; 1575 } 1576 1577 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv, 1578 const struct v4l2_tuner *tuner) 1579 { 1580 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1581 struct wl1273_core *core = radio->core; 1582 int r = 0; 1583 1584 dev_dbg(radio->dev, "%s\n", __func__); 1585 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index); 1586 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name); 1587 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability); 1588 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans); 1589 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow); 1590 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh); 1591 1592 if (tuner->index > 0) 1593 return -EINVAL; 1594 1595 if (mutex_lock_interruptible(&core->lock)) 1596 return -EINTR; 1597 1598 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1599 if (r) 1600 goto out; 1601 1602 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) 1603 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1604 else 1605 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1606 1607 if (r) 1608 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r); 1609 1610 if (tuner->audmode == V4L2_TUNER_MODE_MONO) { 1611 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO); 1612 if (r < 0) { 1613 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1614 __func__, r); 1615 goto out; 1616 } 1617 radio->stereo = false; 1618 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) { 1619 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO); 1620 if (r < 0) { 1621 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1622 __func__, r); 1623 goto out; 1624 } 1625 radio->stereo = true; 1626 } else { 1627 dev_err(radio->dev, "%s: tuner->audmode: %d\n", 1628 __func__, tuner->audmode); 1629 r = -EINVAL; 1630 goto out; 1631 } 1632 1633 out: 1634 mutex_unlock(&core->lock); 1635 1636 return r; 1637 } 1638 1639 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv, 1640 struct v4l2_frequency *freq) 1641 { 1642 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1643 struct wl1273_core *core = radio->core; 1644 1645 dev_dbg(radio->dev, "%s\n", __func__); 1646 1647 if (mutex_lock_interruptible(&core->lock)) 1648 return -EINTR; 1649 1650 freq->type = V4L2_TUNER_RADIO; 1651 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio)); 1652 1653 mutex_unlock(&core->lock); 1654 1655 return 0; 1656 } 1657 1658 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv, 1659 const struct v4l2_frequency *freq) 1660 { 1661 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1662 struct wl1273_core *core = radio->core; 1663 int r; 1664 1665 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency); 1666 1667 if (freq->type != V4L2_TUNER_RADIO) { 1668 dev_dbg(radio->dev, 1669 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type); 1670 return -EINVAL; 1671 } 1672 1673 if (mutex_lock_interruptible(&core->lock)) 1674 return -EINTR; 1675 1676 if (core->mode == WL1273_MODE_RX) { 1677 dev_dbg(radio->dev, "freq: %d\n", freq->frequency); 1678 1679 r = wl1273_fm_set_rx_freq(radio, 1680 WL1273_INV_FREQ(freq->frequency)); 1681 if (r) 1682 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1683 ": set frequency failed with %d\n", r); 1684 } else { 1685 r = wl1273_fm_set_tx_freq(radio, 1686 WL1273_INV_FREQ(freq->frequency)); 1687 if (r) 1688 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1689 ": set frequency failed with %d\n", r); 1690 } 1691 1692 mutex_unlock(&core->lock); 1693 1694 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n"); 1695 return r; 1696 } 1697 1698 #define WL1273_DEFAULT_SEEK_LEVEL 7 1699 1700 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv, 1701 const struct v4l2_hw_freq_seek *seek) 1702 { 1703 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1704 struct wl1273_core *core = radio->core; 1705 int r; 1706 1707 dev_dbg(radio->dev, "%s\n", __func__); 1708 1709 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO) 1710 return -EINVAL; 1711 1712 if (file->f_flags & O_NONBLOCK) 1713 return -EWOULDBLOCK; 1714 1715 if (mutex_lock_interruptible(&core->lock)) 1716 return -EINTR; 1717 1718 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1719 if (r) 1720 goto out; 1721 1722 r = wl1273_fm_tx_set_spacing(radio, seek->spacing); 1723 if (r) 1724 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1725 1726 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward, 1727 WL1273_DEFAULT_SEEK_LEVEL); 1728 if (r) 1729 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1730 1731 out: 1732 mutex_unlock(&core->lock); 1733 return r; 1734 } 1735 1736 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv, 1737 const struct v4l2_modulator *modulator) 1738 { 1739 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1740 struct wl1273_core *core = radio->core; 1741 int r = 0; 1742 1743 dev_dbg(radio->dev, "%s\n", __func__); 1744 1745 if (modulator->index > 0) 1746 return -EINVAL; 1747 1748 if (mutex_lock_interruptible(&core->lock)) 1749 return -EINTR; 1750 1751 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX); 1752 if (r) 1753 goto out; 1754 1755 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS) 1756 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1757 else 1758 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1759 1760 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO) 1761 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO); 1762 else 1763 r = core->write(core, WL1273_MONO_SET, 1764 WL1273_RX_STEREO); 1765 if (r < 0) 1766 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1767 "MONO_SET fails: %d\n", r); 1768 out: 1769 mutex_unlock(&core->lock); 1770 1771 return r; 1772 } 1773 1774 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv, 1775 struct v4l2_modulator *modulator) 1776 { 1777 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1778 struct wl1273_core *core = radio->core; 1779 u16 val; 1780 int r; 1781 1782 dev_dbg(radio->dev, "%s\n", __func__); 1783 1784 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME, 1785 sizeof(modulator->name)); 1786 1787 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1788 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1789 1790 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1791 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO; 1792 1793 if (core->mode != WL1273_MODE_TX) 1794 return 0; 1795 1796 if (mutex_lock_interruptible(&core->lock)) 1797 return -EINTR; 1798 1799 r = core->read(core, WL1273_MONO_SET, &val); 1800 if (r) 1801 goto out; 1802 1803 if (val == WL1273_TX_STEREO) 1804 modulator->txsubchans = V4L2_TUNER_SUB_STEREO; 1805 else 1806 modulator->txsubchans = V4L2_TUNER_SUB_MONO; 1807 1808 if (radio->rds_on) 1809 modulator->txsubchans |= V4L2_TUNER_SUB_RDS; 1810 out: 1811 mutex_unlock(&core->lock); 1812 1813 return 0; 1814 } 1815 1816 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv) 1817 { 1818 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1819 struct wl1273_core *core = radio->core; 1820 struct device *dev = radio->dev; 1821 u16 val; 1822 int r; 1823 1824 dev_info(dev, DRIVER_DESC); 1825 1826 if (core->mode == WL1273_MODE_OFF) { 1827 dev_info(dev, "Mode: Off\n"); 1828 return 0; 1829 } 1830 1831 if (core->mode == WL1273_MODE_SUSPENDED) { 1832 dev_info(dev, "Mode: Suspended\n"); 1833 return 0; 1834 } 1835 1836 r = core->read(core, WL1273_ASIC_ID_GET, &val); 1837 if (r) 1838 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__); 1839 else 1840 dev_info(dev, "ASIC_ID: 0x%04x\n", val); 1841 1842 r = core->read(core, WL1273_ASIC_VER_GET, &val); 1843 if (r) 1844 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__); 1845 else 1846 dev_info(dev, "ASIC Version: 0x%04x\n", val); 1847 1848 r = core->read(core, WL1273_FIRM_VER_GET, &val); 1849 if (r) 1850 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__); 1851 else 1852 dev_info(dev, "FW version: %d(0x%04x)\n", val, val); 1853 1854 r = core->read(core, WL1273_BAND_SET, &val); 1855 if (r) 1856 dev_err(dev, "%s: Get BAND fails.\n", __func__); 1857 else 1858 dev_info(dev, "BAND: %d\n", val); 1859 1860 if (core->mode == WL1273_MODE_TX) { 1861 r = core->read(core, WL1273_PUPD_SET, &val); 1862 if (r) 1863 dev_err(dev, "%s: Get PUPD fails.\n", __func__); 1864 else 1865 dev_info(dev, "PUPD: 0x%04x\n", val); 1866 1867 r = core->read(core, WL1273_CHANL_SET, &val); 1868 if (r) 1869 dev_err(dev, "%s: Get CHANL fails.\n", __func__); 1870 else 1871 dev_info(dev, "Tx frequency: %dkHz\n", val*10); 1872 } else if (core->mode == WL1273_MODE_RX) { 1873 int bf = radio->rangelow; 1874 1875 r = core->read(core, WL1273_FREQ_SET, &val); 1876 if (r) 1877 dev_err(dev, "%s: Get FREQ fails.\n", __func__); 1878 else 1879 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50); 1880 1881 r = core->read(core, WL1273_MOST_MODE_SET, &val); 1882 if (r) 1883 dev_err(dev, "%s: Get MOST_MODE fails.\n", 1884 __func__); 1885 else if (val == 0) 1886 dev_info(dev, "MOST_MODE: Stereo according to blend\n"); 1887 else if (val == 1) 1888 dev_info(dev, "MOST_MODE: Force mono output\n"); 1889 else 1890 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val); 1891 1892 r = core->read(core, WL1273_MOST_BLEND_SET, &val); 1893 if (r) 1894 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__); 1895 else if (val == 0) 1896 dev_info(dev, 1897 "MOST_BLEND: Switched blend & hysteresis.\n"); 1898 else if (val == 1) 1899 dev_info(dev, "MOST_BLEND: Soft blend.\n"); 1900 else 1901 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val); 1902 1903 r = core->read(core, WL1273_STEREO_GET, &val); 1904 if (r) 1905 dev_err(dev, "%s: Get STEREO fails.\n", __func__); 1906 else if (val == 0) 1907 dev_info(dev, "STEREO: Not detected\n"); 1908 else if (val == 1) 1909 dev_info(dev, "STEREO: Detected\n"); 1910 else 1911 dev_info(dev, "STEREO: Unexpected value: %d\n", val); 1912 1913 r = core->read(core, WL1273_RSSI_LVL_GET, &val); 1914 if (r) 1915 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__); 1916 else 1917 dev_info(dev, "RX signal strength: %d\n", (s16) val); 1918 1919 r = core->read(core, WL1273_POWER_SET, &val); 1920 if (r) 1921 dev_err(dev, "%s: Get POWER fails.\n", __func__); 1922 else 1923 dev_info(dev, "POWER: 0x%04x\n", val); 1924 1925 r = core->read(core, WL1273_INT_MASK_SET, &val); 1926 if (r) 1927 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__); 1928 else 1929 dev_info(dev, "INT_MASK: 0x%04x\n", val); 1930 1931 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1932 if (r) 1933 dev_err(dev, "%s: Get RDS_SYNC fails.\n", 1934 __func__); 1935 else if (val == 0) 1936 dev_info(dev, "RDS_SYNC: Not synchronized\n"); 1937 1938 else if (val == 1) 1939 dev_info(dev, "RDS_SYNC: Synchronized\n"); 1940 else 1941 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val); 1942 1943 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val); 1944 if (r) 1945 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n", 1946 __func__); 1947 else 1948 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val); 1949 1950 r = core->read(core, WL1273_VOLUME_SET, &val); 1951 if (r) 1952 dev_err(dev, "%s: Get VOLUME fails.\n", __func__); 1953 else 1954 dev_info(dev, "VOLUME: 0x%04x\n", val); 1955 } 1956 1957 return 0; 1958 } 1959 1960 static void wl1273_vdev_release(struct video_device *dev) 1961 { 1962 } 1963 1964 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = { 1965 .s_ctrl = wl1273_fm_vidioc_s_ctrl, 1966 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl, 1967 }; 1968 1969 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = { 1970 .vidioc_querycap = wl1273_fm_vidioc_querycap, 1971 .vidioc_g_input = wl1273_fm_vidioc_g_input, 1972 .vidioc_s_input = wl1273_fm_vidioc_s_input, 1973 .vidioc_g_audio = wl1273_fm_vidioc_g_audio, 1974 .vidioc_s_audio = wl1273_fm_vidioc_s_audio, 1975 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner, 1976 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner, 1977 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency, 1978 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency, 1979 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek, 1980 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator, 1981 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator, 1982 .vidioc_log_status = wl1273_fm_vidioc_log_status, 1983 }; 1984 1985 static const struct video_device wl1273_viddev_template = { 1986 .fops = &wl1273_fops, 1987 .ioctl_ops = &wl1273_ioctl_ops, 1988 .name = WL1273_FM_DRIVER_NAME, 1989 .release = wl1273_vdev_release, 1990 .vfl_dir = VFL_DIR_TX, 1991 }; 1992 1993 static int wl1273_fm_radio_remove(struct platform_device *pdev) 1994 { 1995 struct wl1273_device *radio = platform_get_drvdata(pdev); 1996 struct wl1273_core *core = radio->core; 1997 1998 dev_info(&pdev->dev, "%s.\n", __func__); 1999 2000 free_irq(core->client->irq, radio); 2001 core->pdata->free_resources(); 2002 2003 v4l2_ctrl_handler_free(&radio->ctrl_handler); 2004 video_unregister_device(&radio->videodev); 2005 v4l2_device_unregister(&radio->v4l2dev); 2006 2007 return 0; 2008 } 2009 2010 static int wl1273_fm_radio_probe(struct platform_device *pdev) 2011 { 2012 struct wl1273_core **core = pdev->dev.platform_data; 2013 struct wl1273_device *radio; 2014 struct v4l2_ctrl *ctrl; 2015 int r = 0; 2016 2017 pr_debug("%s\n", __func__); 2018 2019 if (!core) { 2020 dev_err(&pdev->dev, "No platform data.\n"); 2021 r = -EINVAL; 2022 goto pdata_err; 2023 } 2024 2025 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL); 2026 if (!radio) { 2027 r = -ENOMEM; 2028 goto pdata_err; 2029 } 2030 2031 /* RDS buffer allocation */ 2032 radio->buf_size = rds_buf * RDS_BLOCK_SIZE; 2033 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL); 2034 if (!radio->buffer) { 2035 pr_err("Cannot allocate memory for RDS buffer.\n"); 2036 r = -ENOMEM; 2037 goto pdata_err; 2038 } 2039 2040 radio->core = *core; 2041 radio->irq_flags = WL1273_IRQ_MASK; 2042 radio->dev = &radio->core->client->dev; 2043 radio->rds_on = false; 2044 radio->core->mode = WL1273_MODE_OFF; 2045 radio->tx_power = 118; 2046 radio->core->audio_mode = WL1273_AUDIO_ANALOG; 2047 radio->band = WL1273_BAND_OTHER; 2048 radio->core->i2s_mode = WL1273_I2S_DEF_MODE; 2049 radio->core->channel_number = 2; 2050 radio->core->volume = WL1273_DEFAULT_VOLUME; 2051 radio->rx_frequency = WL1273_BAND_OTHER_LOW; 2052 radio->tx_frequency = WL1273_BAND_OTHER_HIGH; 2053 radio->rangelow = WL1273_BAND_OTHER_LOW; 2054 radio->rangehigh = WL1273_BAND_OTHER_HIGH; 2055 radio->stereo = true; 2056 radio->bus_type = "I2C"; 2057 2058 if (radio->core->pdata->request_resources) { 2059 r = radio->core->pdata->request_resources(radio->core->client); 2060 if (r) { 2061 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2062 ": Cannot get platform data\n"); 2063 goto pdata_err; 2064 } 2065 2066 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq); 2067 2068 r = request_threaded_irq(radio->core->client->irq, NULL, 2069 wl1273_fm_irq_thread_handler, 2070 IRQF_ONESHOT | IRQF_TRIGGER_FALLING, 2071 "wl1273-fm", radio); 2072 if (r < 0) { 2073 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2074 ": Unable to register IRQ handler: %d\n", r); 2075 goto err_request_irq; 2076 } 2077 } else { 2078 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured"); 2079 r = -EINVAL; 2080 goto pdata_err; 2081 } 2082 2083 init_completion(&radio->busy); 2084 init_waitqueue_head(&radio->read_queue); 2085 2086 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL); 2087 if (!radio->write_buf) { 2088 r = -ENOMEM; 2089 goto write_buf_err; 2090 } 2091 2092 radio->dev = &pdev->dev; 2093 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler; 2094 radio->rds_users = 0; 2095 2096 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev); 2097 if (r) { 2098 dev_err(&pdev->dev, "Cannot register v4l2_device.\n"); 2099 goto write_buf_err; 2100 } 2101 2102 /* V4L2 configuration */ 2103 radio->videodev = wl1273_viddev_template; 2104 2105 radio->videodev.v4l2_dev = &radio->v4l2dev; 2106 2107 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6); 2108 2109 /* add in ascending ID order */ 2110 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2111 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1, 2112 WL1273_DEFAULT_VOLUME); 2113 2114 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2115 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); 2116 2117 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops, 2118 V4L2_CID_TUNE_PREEMPHASIS, 2119 V4L2_PREEMPHASIS_75_uS, 0x03, 2120 V4L2_PREEMPHASIS_50_uS); 2121 2122 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2123 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118); 2124 2125 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2126 V4L2_CID_TUNE_ANTENNA_CAPACITOR, 2127 0, 255, 1, 255); 2128 if (ctrl) 2129 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; 2130 2131 if (radio->ctrl_handler.error) { 2132 r = radio->ctrl_handler.error; 2133 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r); 2134 goto handler_init_err; 2135 } 2136 2137 video_set_drvdata(&radio->videodev, radio); 2138 platform_set_drvdata(pdev, radio); 2139 2140 /* register video device */ 2141 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); 2142 if (r) { 2143 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME 2144 ": Could not register video device\n"); 2145 goto handler_init_err; 2146 } 2147 2148 return 0; 2149 2150 handler_init_err: 2151 v4l2_ctrl_handler_free(&radio->ctrl_handler); 2152 v4l2_device_unregister(&radio->v4l2dev); 2153 write_buf_err: 2154 free_irq(radio->core->client->irq, radio); 2155 err_request_irq: 2156 radio->core->pdata->free_resources(); 2157 pdata_err: 2158 return r; 2159 } 2160 2161 static struct platform_driver wl1273_fm_radio_driver = { 2162 .probe = wl1273_fm_radio_probe, 2163 .remove = wl1273_fm_radio_remove, 2164 .driver = { 2165 .name = "wl1273_fm_radio", 2166 }, 2167 }; 2168 2169 module_platform_driver(wl1273_fm_radio_driver); 2170 2171 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); 2172 MODULE_DESCRIPTION(DRIVER_DESC); 2173 MODULE_LICENSE("GPL"); 2174 MODULE_ALIAS("platform:wl1273_fm_radio"); 2175