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 else 616 r = core->write(core, WL1273_RDS_DATA_ENB, 0); 617 } else { 618 dev_warn(dev, "%s: Illegal mode.\n", __func__); 619 } 620 621 if (core->mode == WL1273_MODE_OFF) { 622 r = wl1273_fm_upload_firmware_patch(radio); 623 if (r) 624 dev_warn(dev, "Firmware upload failed.\n"); 625 626 /* 627 * Sometimes the chip is in a wrong power state at this point. 628 * So we set the power once again. 629 */ 630 if (new_mode == WL1273_MODE_RX) { 631 u16 val = WL1273_POWER_SET_FM; 632 633 if (radio->rds_on) 634 val |= WL1273_POWER_SET_RDS; 635 636 r = core->write(core, WL1273_POWER_SET, val); 637 if (r) { 638 dev_err(dev, "%s: POWER_SET fails\n", __func__); 639 goto fail; 640 } 641 } else if (new_mode == WL1273_MODE_TX) { 642 r = core->write(core, WL1273_PUPD_SET, 643 WL1273_PUPD_SET_ON); 644 if (r) { 645 dev_err(dev, "%s: PUPD_SET fails\n", __func__); 646 goto fail; 647 } 648 } 649 } 650 651 return 0; 652 fail: 653 if (pdata->disable) 654 pdata->disable(); 655 656 dev_dbg(dev, "%s: return: %d\n", __func__, r); 657 return r; 658 } 659 660 static int wl1273_fm_suspend(struct wl1273_device *radio) 661 { 662 struct wl1273_core *core = radio->core; 663 int r = 0; 664 665 /* Cannot go from OFF to SUSPENDED */ 666 if (core->mode == WL1273_MODE_RX) 667 r = core->write(core, WL1273_POWER_SET, 668 WL1273_POWER_SET_RETENTION); 669 else if (core->mode == WL1273_MODE_TX) 670 r = core->write(core, WL1273_PUPD_SET, 671 WL1273_PUPD_SET_RETENTION); 672 else 673 r = -EINVAL; 674 675 if (r) { 676 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r); 677 goto out; 678 } 679 680 out: 681 return r; 682 } 683 684 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode) 685 { 686 struct wl1273_core *core = radio->core; 687 struct device *dev = radio->dev; 688 int old_mode; 689 int r; 690 691 dev_dbg(dev, "%s\n", __func__); 692 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden); 693 694 old_mode = core->mode; 695 if (mode & radio->forbidden) { 696 r = -EPERM; 697 goto out; 698 } 699 700 switch (mode) { 701 case WL1273_MODE_RX: 702 case WL1273_MODE_TX: 703 r = wl1273_fm_start(radio, mode); 704 if (r) { 705 dev_err(dev, "%s: Cannot start.\n", __func__); 706 wl1273_fm_stop(radio); 707 goto out; 708 } 709 710 core->mode = mode; 711 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 712 if (r) { 713 dev_err(dev, "INT_MASK_SET fails.\n"); 714 goto out; 715 } 716 717 /* remember previous settings */ 718 if (mode == WL1273_MODE_RX) { 719 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 720 if (r) { 721 dev_err(dev, "set freq fails: %d.\n", r); 722 goto out; 723 } 724 725 r = core->set_volume(core, core->volume); 726 if (r) { 727 dev_err(dev, "set volume fails: %d.\n", r); 728 goto out; 729 } 730 731 dev_dbg(dev, "%s: Set vol: %d.\n", __func__, 732 core->volume); 733 } else { 734 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency); 735 if (r) { 736 dev_err(dev, "set freq fails: %d.\n", r); 737 goto out; 738 } 739 } 740 741 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__); 742 743 r = core->set_audio(core, core->audio_mode); 744 if (r) 745 dev_err(dev, "Cannot set audio mode.\n"); 746 break; 747 748 case WL1273_MODE_OFF: 749 r = wl1273_fm_stop(radio); 750 if (r) 751 dev_err(dev, "%s: Off fails: %d\n", __func__, r); 752 else 753 core->mode = WL1273_MODE_OFF; 754 755 break; 756 757 case WL1273_MODE_SUSPENDED: 758 r = wl1273_fm_suspend(radio); 759 if (r) 760 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r); 761 else 762 core->mode = WL1273_MODE_SUSPENDED; 763 764 break; 765 766 default: 767 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode); 768 r = -EINVAL; 769 break; 770 } 771 out: 772 if (r) 773 core->mode = old_mode; 774 775 return r; 776 } 777 778 static int wl1273_fm_set_seek(struct wl1273_device *radio, 779 unsigned int wrap_around, 780 unsigned int seek_upward, 781 int level) 782 { 783 struct wl1273_core *core = radio->core; 784 int r = 0; 785 unsigned int dir = (seek_upward == 0) ? 0 : 1; 786 unsigned int f; 787 788 f = radio->rx_frequency; 789 dev_dbg(radio->dev, "rx_frequency: %d\n", f); 790 791 if (dir && f + radio->spacing <= radio->rangehigh) 792 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing); 793 else if (dir && wrap_around) 794 r = wl1273_fm_set_rx_freq(radio, radio->rangelow); 795 else if (f - radio->spacing >= radio->rangelow) 796 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing); 797 else if (wrap_around) 798 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh); 799 800 if (r) 801 goto out; 802 803 if (level < SCHAR_MIN || level > SCHAR_MAX) 804 return -EINVAL; 805 806 reinit_completion(&radio->busy); 807 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 808 809 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 810 if (r) 811 goto out; 812 813 dev_dbg(radio->dev, "%s\n", __func__); 814 815 r = core->write(core, WL1273_SEARCH_LVL_SET, level); 816 if (r) 817 goto out; 818 819 r = core->write(core, WL1273_SEARCH_DIR_SET, dir); 820 if (r) 821 goto out; 822 823 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); 824 if (r) 825 goto out; 826 827 /* wait for the FR IRQ */ 828 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 829 if (!(radio->irq_received & WL1273_BL_EVENT)) { 830 r = -ETIMEDOUT; 831 goto out; 832 } 833 834 radio->irq_received &= ~WL1273_BL_EVENT; 835 836 if (!wrap_around) 837 goto out; 838 839 /* Wrap around */ 840 dev_dbg(radio->dev, "Wrap around in HW seek.\n"); 841 842 if (seek_upward) 843 f = radio->rangelow; 844 else 845 f = radio->rangehigh; 846 847 r = wl1273_fm_set_rx_freq(radio, f); 848 if (r) 849 goto out; 850 851 reinit_completion(&radio->busy); 852 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 853 854 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK); 855 if (r) 856 goto out; 857 858 /* wait for the FR IRQ */ 859 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000))) 860 r = -ETIMEDOUT; 861 out: 862 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r); 863 return r; 864 } 865 866 /** 867 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value. 868 * @radio: A pointer to the device struct. 869 */ 870 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio) 871 { 872 struct wl1273_core *core = radio->core; 873 struct device *dev = radio->dev; 874 u16 val; 875 int r; 876 877 if (core->mode == WL1273_MODE_OFF || 878 core->mode == WL1273_MODE_SUSPENDED) 879 return -EPERM; 880 881 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val); 882 if (r) { 883 dev_err(dev, "%s: read error: %d\n", __func__, r); 884 goto out; 885 } 886 887 out: 888 return val; 889 } 890 891 /** 892 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value. 893 * @radio: A pointer to the device struct. 894 * @preemphasis: The new pre-amphasis value. 895 * 896 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED, 897 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS. 898 */ 899 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio, 900 unsigned int preemphasis) 901 { 902 struct wl1273_core *core = radio->core; 903 int r; 904 u16 em; 905 906 if (core->mode == WL1273_MODE_OFF || 907 core->mode == WL1273_MODE_SUSPENDED) 908 return -EPERM; 909 910 mutex_lock(&core->lock); 911 912 switch (preemphasis) { 913 case V4L2_PREEMPHASIS_DISABLED: 914 em = 1; 915 break; 916 case V4L2_PREEMPHASIS_50_uS: 917 em = 0; 918 break; 919 case V4L2_PREEMPHASIS_75_uS: 920 em = 2; 921 break; 922 default: 923 r = -EINVAL; 924 goto out; 925 } 926 927 r = core->write(core, WL1273_PREMPH_SET, em); 928 if (r) 929 goto out; 930 931 radio->preemphasis = preemphasis; 932 933 out: 934 mutex_unlock(&core->lock); 935 return r; 936 } 937 938 static int wl1273_fm_rds_on(struct wl1273_device *radio) 939 { 940 struct wl1273_core *core = radio->core; 941 int r; 942 943 dev_dbg(radio->dev, "%s\n", __func__); 944 if (radio->rds_on) 945 return 0; 946 947 r = core->write(core, WL1273_POWER_SET, 948 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS); 949 if (r) 950 goto out; 951 952 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 953 if (r) 954 dev_err(radio->dev, "set freq fails: %d.\n", r); 955 out: 956 return r; 957 } 958 959 static int wl1273_fm_rds_off(struct wl1273_device *radio) 960 { 961 struct wl1273_core *core = radio->core; 962 int r; 963 964 if (!radio->rds_on) 965 return 0; 966 967 radio->irq_flags &= ~WL1273_RDS_EVENT; 968 969 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags); 970 if (r) 971 goto out; 972 973 /* Service pending read */ 974 wake_up_interruptible(&radio->read_queue); 975 976 dev_dbg(radio->dev, "%s\n", __func__); 977 978 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM); 979 if (r) 980 goto out; 981 982 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 983 if (r) 984 dev_err(radio->dev, "set freq fails: %d.\n", r); 985 out: 986 dev_dbg(radio->dev, "%s: exiting...\n", __func__); 987 988 return r; 989 } 990 991 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode) 992 { 993 int r = 0; 994 struct wl1273_core *core = radio->core; 995 996 if (core->mode == WL1273_MODE_OFF || 997 core->mode == WL1273_MODE_SUSPENDED) 998 return -EPERM; 999 1000 if (new_mode == WL1273_RDS_RESET) { 1001 r = core->write(core, WL1273_RDS_CNTRL_SET, 1); 1002 return r; 1003 } 1004 1005 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) { 1006 r = core->write(core, WL1273_RDS_DATA_ENB, 0); 1007 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) { 1008 r = core->write(core, WL1273_RDS_DATA_ENB, 1); 1009 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) { 1010 r = wl1273_fm_rds_off(radio); 1011 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) { 1012 r = wl1273_fm_rds_on(radio); 1013 } else { 1014 dev_err(radio->dev, "%s: Unknown mode: %d\n", 1015 __func__, new_mode); 1016 r = -EINVAL; 1017 } 1018 1019 if (!r) 1020 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false; 1021 1022 return r; 1023 } 1024 1025 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf, 1026 size_t count, loff_t *ppos) 1027 { 1028 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1029 struct wl1273_core *core = radio->core; 1030 u16 val; 1031 int r; 1032 1033 dev_dbg(radio->dev, "%s\n", __func__); 1034 1035 if (core->mode != WL1273_MODE_TX) 1036 return count; 1037 1038 if (radio->rds_users == 0) { 1039 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1040 return 0; 1041 } 1042 1043 if (mutex_lock_interruptible(&core->lock)) 1044 return -EINTR; 1045 /* 1046 * Multiple processes can open the device, but only 1047 * one gets to write to it. 1048 */ 1049 if (radio->owner && radio->owner != file) { 1050 r = -EBUSY; 1051 goto out; 1052 } 1053 radio->owner = file; 1054 1055 /* Manual Mode */ 1056 if (count > 255) 1057 val = 255; 1058 else 1059 val = count; 1060 1061 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val); 1062 1063 if (copy_from_user(radio->write_buf + 1, buf, val)) { 1064 r = -EFAULT; 1065 goto out; 1066 } 1067 1068 dev_dbg(radio->dev, "Count: %d\n", val); 1069 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf); 1070 1071 radio->write_buf[0] = WL1273_RDS_DATA_SET; 1072 core->write_data(core, radio->write_buf, val + 1); 1073 1074 r = val; 1075 out: 1076 mutex_unlock(&core->lock); 1077 1078 return r; 1079 } 1080 1081 static unsigned int wl1273_fm_fops_poll(struct file *file, 1082 struct poll_table_struct *pts) 1083 { 1084 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1085 struct wl1273_core *core = radio->core; 1086 1087 if (radio->owner && radio->owner != file) 1088 return -EBUSY; 1089 1090 radio->owner = file; 1091 1092 if (core->mode == WL1273_MODE_RX) { 1093 poll_wait(file, &radio->read_queue, pts); 1094 1095 if (radio->rd_index != radio->wr_index) 1096 return POLLIN | POLLRDNORM; 1097 1098 } else if (core->mode == WL1273_MODE_TX) { 1099 return POLLOUT | POLLWRNORM; 1100 } 1101 1102 return 0; 1103 } 1104 1105 static int wl1273_fm_fops_open(struct file *file) 1106 { 1107 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1108 struct wl1273_core *core = radio->core; 1109 int r = 0; 1110 1111 dev_dbg(radio->dev, "%s\n", __func__); 1112 1113 if (core->mode == WL1273_MODE_RX && radio->rds_on && 1114 !radio->rds_users) { 1115 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode); 1116 1117 if (mutex_lock_interruptible(&core->lock)) 1118 return -EINTR; 1119 1120 radio->irq_flags |= WL1273_RDS_EVENT; 1121 1122 r = core->write(core, WL1273_INT_MASK_SET, 1123 radio->irq_flags); 1124 if (r) { 1125 mutex_unlock(&core->lock); 1126 goto out; 1127 } 1128 1129 radio->rds_users++; 1130 1131 mutex_unlock(&core->lock); 1132 } 1133 out: 1134 return r; 1135 } 1136 1137 static int wl1273_fm_fops_release(struct file *file) 1138 { 1139 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1140 struct wl1273_core *core = radio->core; 1141 int r = 0; 1142 1143 dev_dbg(radio->dev, "%s\n", __func__); 1144 1145 if (radio->rds_users > 0) { 1146 radio->rds_users--; 1147 if (radio->rds_users == 0) { 1148 if (mutex_lock_interruptible(&core->lock)) 1149 return -EINTR; 1150 1151 radio->irq_flags &= ~WL1273_RDS_EVENT; 1152 1153 if (core->mode == WL1273_MODE_RX) { 1154 r = core->write(core, 1155 WL1273_INT_MASK_SET, 1156 radio->irq_flags); 1157 if (r) { 1158 mutex_unlock(&core->lock); 1159 goto out; 1160 } 1161 } 1162 mutex_unlock(&core->lock); 1163 } 1164 } 1165 1166 if (file == radio->owner) 1167 radio->owner = NULL; 1168 out: 1169 return r; 1170 } 1171 1172 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf, 1173 size_t count, loff_t *ppos) 1174 { 1175 int r = 0; 1176 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1177 struct wl1273_core *core = radio->core; 1178 unsigned int block_count = 0; 1179 u16 val; 1180 1181 dev_dbg(radio->dev, "%s\n", __func__); 1182 1183 if (core->mode != WL1273_MODE_RX) 1184 return 0; 1185 1186 if (radio->rds_users == 0) { 1187 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1188 return 0; 1189 } 1190 1191 if (mutex_lock_interruptible(&core->lock)) 1192 return -EINTR; 1193 1194 /* 1195 * Multiple processes can open the device, but only 1196 * one at a time gets read access. 1197 */ 1198 if (radio->owner && radio->owner != file) { 1199 r = -EBUSY; 1200 goto out; 1201 } 1202 radio->owner = file; 1203 1204 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1205 if (r) { 1206 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__); 1207 goto out; 1208 } else if (val == 0) { 1209 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n"); 1210 r = -ENODATA; 1211 goto out; 1212 } 1213 1214 /* block if no new data available */ 1215 while (radio->wr_index == radio->rd_index) { 1216 if (file->f_flags & O_NONBLOCK) { 1217 r = -EWOULDBLOCK; 1218 goto out; 1219 } 1220 1221 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__); 1222 if (wait_event_interruptible(radio->read_queue, 1223 radio->wr_index != 1224 radio->rd_index) < 0) { 1225 r = -EINTR; 1226 goto out; 1227 } 1228 } 1229 1230 /* calculate block count from byte count */ 1231 count /= RDS_BLOCK_SIZE; 1232 1233 /* copy RDS blocks from the internal buffer and to user buffer */ 1234 while (block_count < count) { 1235 if (radio->rd_index == radio->wr_index) 1236 break; 1237 1238 /* always transfer complete RDS blocks */ 1239 if (copy_to_user(buf, &radio->buffer[radio->rd_index], 1240 RDS_BLOCK_SIZE)) 1241 break; 1242 1243 /* increment and wrap the read pointer */ 1244 radio->rd_index += RDS_BLOCK_SIZE; 1245 if (radio->rd_index >= radio->buf_size) 1246 radio->rd_index = 0; 1247 1248 /* increment counters */ 1249 block_count++; 1250 buf += RDS_BLOCK_SIZE; 1251 r += RDS_BLOCK_SIZE; 1252 } 1253 1254 out: 1255 dev_dbg(radio->dev, "%s: exit\n", __func__); 1256 mutex_unlock(&core->lock); 1257 1258 return r; 1259 } 1260 1261 static const struct v4l2_file_operations wl1273_fops = { 1262 .owner = THIS_MODULE, 1263 .read = wl1273_fm_fops_read, 1264 .write = wl1273_fm_fops_write, 1265 .poll = wl1273_fm_fops_poll, 1266 .unlocked_ioctl = video_ioctl2, 1267 .open = wl1273_fm_fops_open, 1268 .release = wl1273_fm_fops_release, 1269 }; 1270 1271 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv, 1272 struct v4l2_capability *capability) 1273 { 1274 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1275 1276 dev_dbg(radio->dev, "%s\n", __func__); 1277 1278 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME, 1279 sizeof(capability->driver)); 1280 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio", 1281 sizeof(capability->card)); 1282 strlcpy(capability->bus_info, radio->bus_type, 1283 sizeof(capability->bus_info)); 1284 1285 capability->device_caps = V4L2_CAP_HW_FREQ_SEEK | 1286 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO | 1287 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR | 1288 V4L2_CAP_RDS_OUTPUT; 1289 capability->capabilities = capability->device_caps | 1290 V4L2_CAP_DEVICE_CAPS; 1291 1292 return 0; 1293 } 1294 1295 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv, 1296 unsigned int *i) 1297 { 1298 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1299 1300 dev_dbg(radio->dev, "%s\n", __func__); 1301 1302 *i = 0; 1303 1304 return 0; 1305 } 1306 1307 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv, 1308 unsigned int i) 1309 { 1310 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1311 1312 dev_dbg(radio->dev, "%s\n", __func__); 1313 1314 if (i != 0) 1315 return -EINVAL; 1316 1317 return 0; 1318 } 1319 1320 /** 1321 * wl1273_fm_set_tx_power() - Set the transmission power value. 1322 * @core: A pointer to the device struct. 1323 * @power: The new power value. 1324 */ 1325 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power) 1326 { 1327 struct wl1273_core *core = radio->core; 1328 int r; 1329 1330 if (core->mode == WL1273_MODE_OFF || 1331 core->mode == WL1273_MODE_SUSPENDED) 1332 return -EPERM; 1333 1334 mutex_lock(&core->lock); 1335 1336 /* Convert the dBuV value to chip presentation */ 1337 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power); 1338 if (r) 1339 goto out; 1340 1341 radio->tx_power = power; 1342 1343 out: 1344 mutex_unlock(&core->lock); 1345 return r; 1346 } 1347 1348 #define WL1273_SPACING_50kHz 1 1349 #define WL1273_SPACING_100kHz 2 1350 #define WL1273_SPACING_200kHz 4 1351 1352 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio, 1353 unsigned int spacing) 1354 { 1355 struct wl1273_core *core = radio->core; 1356 int r; 1357 1358 if (spacing == 0) { 1359 r = core->write(core, WL1273_SCAN_SPACING_SET, 1360 WL1273_SPACING_100kHz); 1361 radio->spacing = 100; 1362 } else if (spacing - 50000 < 25000) { 1363 r = core->write(core, WL1273_SCAN_SPACING_SET, 1364 WL1273_SPACING_50kHz); 1365 radio->spacing = 50; 1366 } else if (spacing - 100000 < 50000) { 1367 r = core->write(core, WL1273_SCAN_SPACING_SET, 1368 WL1273_SPACING_100kHz); 1369 radio->spacing = 100; 1370 } else { 1371 r = core->write(core, WL1273_SCAN_SPACING_SET, 1372 WL1273_SPACING_200kHz); 1373 radio->spacing = 200; 1374 } 1375 1376 return r; 1377 } 1378 1379 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1380 { 1381 struct wl1273_device *radio = ctrl->priv; 1382 struct wl1273_core *core = radio->core; 1383 1384 dev_dbg(radio->dev, "%s\n", __func__); 1385 1386 if (mutex_lock_interruptible(&core->lock)) 1387 return -EINTR; 1388 1389 switch (ctrl->id) { 1390 case V4L2_CID_TUNE_ANTENNA_CAPACITOR: 1391 ctrl->val = wl1273_fm_get_tx_ctune(radio); 1392 break; 1393 1394 default: 1395 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1396 __func__, ctrl->id); 1397 break; 1398 } 1399 1400 mutex_unlock(&core->lock); 1401 1402 return 0; 1403 } 1404 1405 #define WL1273_MUTE_SOFT_ENABLE (1 << 0) 1406 #define WL1273_MUTE_AC (1 << 1) 1407 #define WL1273_MUTE_HARD_LEFT (1 << 2) 1408 #define WL1273_MUTE_HARD_RIGHT (1 << 3) 1409 #define WL1273_MUTE_SOFT_FORCE (1 << 4) 1410 1411 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl) 1412 { 1413 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler); 1414 } 1415 1416 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl) 1417 { 1418 struct wl1273_device *radio = to_radio(ctrl); 1419 struct wl1273_core *core = radio->core; 1420 int r = 0; 1421 1422 dev_dbg(radio->dev, "%s\n", __func__); 1423 1424 switch (ctrl->id) { 1425 case V4L2_CID_AUDIO_MUTE: 1426 if (mutex_lock_interruptible(&core->lock)) 1427 return -EINTR; 1428 1429 if (core->mode == WL1273_MODE_RX && ctrl->val) 1430 r = core->write(core, 1431 WL1273_MUTE_STATUS_SET, 1432 WL1273_MUTE_HARD_LEFT | 1433 WL1273_MUTE_HARD_RIGHT); 1434 else if (core->mode == WL1273_MODE_RX) 1435 r = core->write(core, 1436 WL1273_MUTE_STATUS_SET, 0x0); 1437 else if (core->mode == WL1273_MODE_TX && ctrl->val) 1438 r = core->write(core, WL1273_MUTE, 1); 1439 else if (core->mode == WL1273_MODE_TX) 1440 r = core->write(core, WL1273_MUTE, 0); 1441 1442 mutex_unlock(&core->lock); 1443 break; 1444 1445 case V4L2_CID_AUDIO_VOLUME: 1446 if (ctrl->val == 0) 1447 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF); 1448 else 1449 r = core->set_volume(core, core->volume); 1450 break; 1451 1452 case V4L2_CID_TUNE_PREEMPHASIS: 1453 r = wl1273_fm_set_preemphasis(radio, ctrl->val); 1454 break; 1455 1456 case V4L2_CID_TUNE_POWER_LEVEL: 1457 r = wl1273_fm_set_tx_power(radio, ctrl->val); 1458 break; 1459 1460 default: 1461 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1462 __func__, ctrl->id); 1463 break; 1464 } 1465 1466 dev_dbg(radio->dev, "%s\n", __func__); 1467 return r; 1468 } 1469 1470 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv, 1471 struct v4l2_audio *audio) 1472 { 1473 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1474 1475 dev_dbg(radio->dev, "%s\n", __func__); 1476 1477 if (audio->index > 1) 1478 return -EINVAL; 1479 1480 strlcpy(audio->name, "Radio", sizeof(audio->name)); 1481 audio->capability = V4L2_AUDCAP_STEREO; 1482 1483 return 0; 1484 } 1485 1486 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv, 1487 const struct v4l2_audio *audio) 1488 { 1489 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1490 1491 dev_dbg(radio->dev, "%s\n", __func__); 1492 1493 if (audio->index != 0) 1494 return -EINVAL; 1495 1496 return 0; 1497 } 1498 1499 #define WL1273_RDS_NOT_SYNCHRONIZED 0 1500 #define WL1273_RDS_SYNCHRONIZED 1 1501 1502 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv, 1503 struct v4l2_tuner *tuner) 1504 { 1505 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1506 struct wl1273_core *core = radio->core; 1507 u16 val; 1508 int r; 1509 1510 dev_dbg(radio->dev, "%s\n", __func__); 1511 1512 if (tuner->index > 0) 1513 return -EINVAL; 1514 1515 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name)); 1516 tuner->type = V4L2_TUNER_RADIO; 1517 1518 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1519 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1520 1521 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1522 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO | 1523 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP; 1524 1525 if (radio->stereo) 1526 tuner->audmode = V4L2_TUNER_MODE_STEREO; 1527 else 1528 tuner->audmode = V4L2_TUNER_MODE_MONO; 1529 1530 if (core->mode != WL1273_MODE_RX) 1531 return 0; 1532 1533 if (mutex_lock_interruptible(&core->lock)) 1534 return -EINTR; 1535 1536 r = core->read(core, WL1273_STEREO_GET, &val); 1537 if (r) 1538 goto out; 1539 1540 if (val == 1) 1541 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; 1542 else 1543 tuner->rxsubchans = V4L2_TUNER_SUB_MONO; 1544 1545 r = core->read(core, WL1273_RSSI_LVL_GET, &val); 1546 if (r) 1547 goto out; 1548 1549 tuner->signal = (s16) val; 1550 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal); 1551 1552 tuner->afc = 0; 1553 1554 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1555 if (r) 1556 goto out; 1557 1558 if (val == WL1273_RDS_SYNCHRONIZED) 1559 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; 1560 out: 1561 mutex_unlock(&core->lock); 1562 1563 return r; 1564 } 1565 1566 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv, 1567 const struct v4l2_tuner *tuner) 1568 { 1569 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1570 struct wl1273_core *core = radio->core; 1571 int r = 0; 1572 1573 dev_dbg(radio->dev, "%s\n", __func__); 1574 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index); 1575 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name); 1576 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability); 1577 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans); 1578 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow); 1579 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh); 1580 1581 if (tuner->index > 0) 1582 return -EINVAL; 1583 1584 if (mutex_lock_interruptible(&core->lock)) 1585 return -EINTR; 1586 1587 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1588 if (r) 1589 goto out; 1590 1591 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) 1592 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1593 else 1594 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1595 1596 if (r) 1597 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r); 1598 1599 if (tuner->audmode == V4L2_TUNER_MODE_MONO) { 1600 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO); 1601 if (r < 0) { 1602 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1603 __func__, r); 1604 goto out; 1605 } 1606 radio->stereo = false; 1607 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) { 1608 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO); 1609 if (r < 0) { 1610 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1611 __func__, r); 1612 goto out; 1613 } 1614 radio->stereo = true; 1615 } else { 1616 dev_err(radio->dev, "%s: tuner->audmode: %d\n", 1617 __func__, tuner->audmode); 1618 r = -EINVAL; 1619 goto out; 1620 } 1621 1622 out: 1623 mutex_unlock(&core->lock); 1624 1625 return r; 1626 } 1627 1628 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv, 1629 struct v4l2_frequency *freq) 1630 { 1631 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1632 struct wl1273_core *core = radio->core; 1633 1634 dev_dbg(radio->dev, "%s\n", __func__); 1635 1636 if (mutex_lock_interruptible(&core->lock)) 1637 return -EINTR; 1638 1639 freq->type = V4L2_TUNER_RADIO; 1640 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio)); 1641 1642 mutex_unlock(&core->lock); 1643 1644 return 0; 1645 } 1646 1647 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv, 1648 const struct v4l2_frequency *freq) 1649 { 1650 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1651 struct wl1273_core *core = radio->core; 1652 int r; 1653 1654 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency); 1655 1656 if (freq->type != V4L2_TUNER_RADIO) { 1657 dev_dbg(radio->dev, 1658 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type); 1659 return -EINVAL; 1660 } 1661 1662 if (mutex_lock_interruptible(&core->lock)) 1663 return -EINTR; 1664 1665 if (core->mode == WL1273_MODE_RX) { 1666 dev_dbg(radio->dev, "freq: %d\n", freq->frequency); 1667 1668 r = wl1273_fm_set_rx_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 } else { 1674 r = wl1273_fm_set_tx_freq(radio, 1675 WL1273_INV_FREQ(freq->frequency)); 1676 if (r) 1677 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1678 ": set frequency failed with %d\n", r); 1679 } 1680 1681 mutex_unlock(&core->lock); 1682 1683 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n"); 1684 return r; 1685 } 1686 1687 #define WL1273_DEFAULT_SEEK_LEVEL 7 1688 1689 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv, 1690 const struct v4l2_hw_freq_seek *seek) 1691 { 1692 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1693 struct wl1273_core *core = radio->core; 1694 int r; 1695 1696 dev_dbg(radio->dev, "%s\n", __func__); 1697 1698 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO) 1699 return -EINVAL; 1700 1701 if (file->f_flags & O_NONBLOCK) 1702 return -EWOULDBLOCK; 1703 1704 if (mutex_lock_interruptible(&core->lock)) 1705 return -EINTR; 1706 1707 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1708 if (r) 1709 goto out; 1710 1711 r = wl1273_fm_tx_set_spacing(radio, seek->spacing); 1712 if (r) 1713 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1714 1715 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward, 1716 WL1273_DEFAULT_SEEK_LEVEL); 1717 if (r) 1718 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1719 1720 out: 1721 mutex_unlock(&core->lock); 1722 return r; 1723 } 1724 1725 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv, 1726 const struct v4l2_modulator *modulator) 1727 { 1728 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1729 struct wl1273_core *core = radio->core; 1730 int r = 0; 1731 1732 dev_dbg(radio->dev, "%s\n", __func__); 1733 1734 if (modulator->index > 0) 1735 return -EINVAL; 1736 1737 if (mutex_lock_interruptible(&core->lock)) 1738 return -EINTR; 1739 1740 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX); 1741 if (r) 1742 goto out; 1743 1744 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS) 1745 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1746 else 1747 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1748 1749 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO) 1750 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO); 1751 else 1752 r = core->write(core, WL1273_MONO_SET, 1753 WL1273_RX_STEREO); 1754 if (r < 0) 1755 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1756 "MONO_SET fails: %d\n", r); 1757 out: 1758 mutex_unlock(&core->lock); 1759 1760 return r; 1761 } 1762 1763 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv, 1764 struct v4l2_modulator *modulator) 1765 { 1766 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1767 struct wl1273_core *core = radio->core; 1768 u16 val; 1769 int r; 1770 1771 dev_dbg(radio->dev, "%s\n", __func__); 1772 1773 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME, 1774 sizeof(modulator->name)); 1775 1776 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1777 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1778 1779 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1780 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO; 1781 1782 if (core->mode != WL1273_MODE_TX) 1783 return 0; 1784 1785 if (mutex_lock_interruptible(&core->lock)) 1786 return -EINTR; 1787 1788 r = core->read(core, WL1273_MONO_SET, &val); 1789 if (r) 1790 goto out; 1791 1792 if (val == WL1273_TX_STEREO) 1793 modulator->txsubchans = V4L2_TUNER_SUB_STEREO; 1794 else 1795 modulator->txsubchans = V4L2_TUNER_SUB_MONO; 1796 1797 if (radio->rds_on) 1798 modulator->txsubchans |= V4L2_TUNER_SUB_RDS; 1799 out: 1800 mutex_unlock(&core->lock); 1801 1802 return 0; 1803 } 1804 1805 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv) 1806 { 1807 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1808 struct wl1273_core *core = radio->core; 1809 struct device *dev = radio->dev; 1810 u16 val; 1811 int r; 1812 1813 dev_info(dev, DRIVER_DESC); 1814 1815 if (core->mode == WL1273_MODE_OFF) { 1816 dev_info(dev, "Mode: Off\n"); 1817 return 0; 1818 } 1819 1820 if (core->mode == WL1273_MODE_SUSPENDED) { 1821 dev_info(dev, "Mode: Suspended\n"); 1822 return 0; 1823 } 1824 1825 r = core->read(core, WL1273_ASIC_ID_GET, &val); 1826 if (r) 1827 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__); 1828 else 1829 dev_info(dev, "ASIC_ID: 0x%04x\n", val); 1830 1831 r = core->read(core, WL1273_ASIC_VER_GET, &val); 1832 if (r) 1833 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__); 1834 else 1835 dev_info(dev, "ASIC Version: 0x%04x\n", val); 1836 1837 r = core->read(core, WL1273_FIRM_VER_GET, &val); 1838 if (r) 1839 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__); 1840 else 1841 dev_info(dev, "FW version: %d(0x%04x)\n", val, val); 1842 1843 r = core->read(core, WL1273_BAND_SET, &val); 1844 if (r) 1845 dev_err(dev, "%s: Get BAND fails.\n", __func__); 1846 else 1847 dev_info(dev, "BAND: %d\n", val); 1848 1849 if (core->mode == WL1273_MODE_TX) { 1850 r = core->read(core, WL1273_PUPD_SET, &val); 1851 if (r) 1852 dev_err(dev, "%s: Get PUPD fails.\n", __func__); 1853 else 1854 dev_info(dev, "PUPD: 0x%04x\n", val); 1855 1856 r = core->read(core, WL1273_CHANL_SET, &val); 1857 if (r) 1858 dev_err(dev, "%s: Get CHANL fails.\n", __func__); 1859 else 1860 dev_info(dev, "Tx frequency: %dkHz\n", val*10); 1861 } else if (core->mode == WL1273_MODE_RX) { 1862 int bf = radio->rangelow; 1863 1864 r = core->read(core, WL1273_FREQ_SET, &val); 1865 if (r) 1866 dev_err(dev, "%s: Get FREQ fails.\n", __func__); 1867 else 1868 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50); 1869 1870 r = core->read(core, WL1273_MOST_MODE_SET, &val); 1871 if (r) 1872 dev_err(dev, "%s: Get MOST_MODE fails.\n", 1873 __func__); 1874 else if (val == 0) 1875 dev_info(dev, "MOST_MODE: Stereo according to blend\n"); 1876 else if (val == 1) 1877 dev_info(dev, "MOST_MODE: Force mono output\n"); 1878 else 1879 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val); 1880 1881 r = core->read(core, WL1273_MOST_BLEND_SET, &val); 1882 if (r) 1883 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__); 1884 else if (val == 0) 1885 dev_info(dev, 1886 "MOST_BLEND: Switched blend & hysteresis.\n"); 1887 else if (val == 1) 1888 dev_info(dev, "MOST_BLEND: Soft blend.\n"); 1889 else 1890 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val); 1891 1892 r = core->read(core, WL1273_STEREO_GET, &val); 1893 if (r) 1894 dev_err(dev, "%s: Get STEREO fails.\n", __func__); 1895 else if (val == 0) 1896 dev_info(dev, "STEREO: Not detected\n"); 1897 else if (val == 1) 1898 dev_info(dev, "STEREO: Detected\n"); 1899 else 1900 dev_info(dev, "STEREO: Unexpected value: %d\n", val); 1901 1902 r = core->read(core, WL1273_RSSI_LVL_GET, &val); 1903 if (r) 1904 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__); 1905 else 1906 dev_info(dev, "RX signal strength: %d\n", (s16) val); 1907 1908 r = core->read(core, WL1273_POWER_SET, &val); 1909 if (r) 1910 dev_err(dev, "%s: Get POWER fails.\n", __func__); 1911 else 1912 dev_info(dev, "POWER: 0x%04x\n", val); 1913 1914 r = core->read(core, WL1273_INT_MASK_SET, &val); 1915 if (r) 1916 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__); 1917 else 1918 dev_info(dev, "INT_MASK: 0x%04x\n", val); 1919 1920 r = core->read(core, WL1273_RDS_SYNC_GET, &val); 1921 if (r) 1922 dev_err(dev, "%s: Get RDS_SYNC fails.\n", 1923 __func__); 1924 else if (val == 0) 1925 dev_info(dev, "RDS_SYNC: Not synchronized\n"); 1926 1927 else if (val == 1) 1928 dev_info(dev, "RDS_SYNC: Synchronized\n"); 1929 else 1930 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val); 1931 1932 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val); 1933 if (r) 1934 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n", 1935 __func__); 1936 else 1937 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val); 1938 1939 r = core->read(core, WL1273_VOLUME_SET, &val); 1940 if (r) 1941 dev_err(dev, "%s: Get VOLUME fails.\n", __func__); 1942 else 1943 dev_info(dev, "VOLUME: 0x%04x\n", val); 1944 } 1945 1946 return 0; 1947 } 1948 1949 static void wl1273_vdev_release(struct video_device *dev) 1950 { 1951 } 1952 1953 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = { 1954 .s_ctrl = wl1273_fm_vidioc_s_ctrl, 1955 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl, 1956 }; 1957 1958 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = { 1959 .vidioc_querycap = wl1273_fm_vidioc_querycap, 1960 .vidioc_g_input = wl1273_fm_vidioc_g_input, 1961 .vidioc_s_input = wl1273_fm_vidioc_s_input, 1962 .vidioc_g_audio = wl1273_fm_vidioc_g_audio, 1963 .vidioc_s_audio = wl1273_fm_vidioc_s_audio, 1964 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner, 1965 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner, 1966 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency, 1967 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency, 1968 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek, 1969 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator, 1970 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator, 1971 .vidioc_log_status = wl1273_fm_vidioc_log_status, 1972 }; 1973 1974 static struct video_device wl1273_viddev_template = { 1975 .fops = &wl1273_fops, 1976 .ioctl_ops = &wl1273_ioctl_ops, 1977 .name = WL1273_FM_DRIVER_NAME, 1978 .release = wl1273_vdev_release, 1979 .vfl_dir = VFL_DIR_TX, 1980 }; 1981 1982 static int wl1273_fm_radio_remove(struct platform_device *pdev) 1983 { 1984 struct wl1273_device *radio = platform_get_drvdata(pdev); 1985 struct wl1273_core *core = radio->core; 1986 1987 dev_info(&pdev->dev, "%s.\n", __func__); 1988 1989 free_irq(core->client->irq, radio); 1990 core->pdata->free_resources(); 1991 1992 v4l2_ctrl_handler_free(&radio->ctrl_handler); 1993 video_unregister_device(&radio->videodev); 1994 v4l2_device_unregister(&radio->v4l2dev); 1995 1996 return 0; 1997 } 1998 1999 static int wl1273_fm_radio_probe(struct platform_device *pdev) 2000 { 2001 struct wl1273_core **core = pdev->dev.platform_data; 2002 struct wl1273_device *radio; 2003 struct v4l2_ctrl *ctrl; 2004 int r = 0; 2005 2006 pr_debug("%s\n", __func__); 2007 2008 if (!core) { 2009 dev_err(&pdev->dev, "No platform data.\n"); 2010 r = -EINVAL; 2011 goto pdata_err; 2012 } 2013 2014 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL); 2015 if (!radio) { 2016 r = -ENOMEM; 2017 goto pdata_err; 2018 } 2019 2020 /* RDS buffer allocation */ 2021 radio->buf_size = rds_buf * RDS_BLOCK_SIZE; 2022 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL); 2023 if (!radio->buffer) { 2024 pr_err("Cannot allocate memory for RDS buffer.\n"); 2025 r = -ENOMEM; 2026 goto pdata_err; 2027 } 2028 2029 radio->core = *core; 2030 radio->irq_flags = WL1273_IRQ_MASK; 2031 radio->dev = &radio->core->client->dev; 2032 radio->rds_on = false; 2033 radio->core->mode = WL1273_MODE_OFF; 2034 radio->tx_power = 118; 2035 radio->core->audio_mode = WL1273_AUDIO_ANALOG; 2036 radio->band = WL1273_BAND_OTHER; 2037 radio->core->i2s_mode = WL1273_I2S_DEF_MODE; 2038 radio->core->channel_number = 2; 2039 radio->core->volume = WL1273_DEFAULT_VOLUME; 2040 radio->rx_frequency = WL1273_BAND_OTHER_LOW; 2041 radio->tx_frequency = WL1273_BAND_OTHER_HIGH; 2042 radio->rangelow = WL1273_BAND_OTHER_LOW; 2043 radio->rangehigh = WL1273_BAND_OTHER_HIGH; 2044 radio->stereo = true; 2045 radio->bus_type = "I2C"; 2046 2047 if (radio->core->pdata->request_resources) { 2048 r = radio->core->pdata->request_resources(radio->core->client); 2049 if (r) { 2050 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2051 ": Cannot get platform data\n"); 2052 goto pdata_err; 2053 } 2054 2055 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq); 2056 2057 r = request_threaded_irq(radio->core->client->irq, NULL, 2058 wl1273_fm_irq_thread_handler, 2059 IRQF_ONESHOT | IRQF_TRIGGER_FALLING, 2060 "wl1273-fm", radio); 2061 if (r < 0) { 2062 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2063 ": Unable to register IRQ handler: %d\n", r); 2064 goto err_request_irq; 2065 } 2066 } else { 2067 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured"); 2068 r = -EINVAL; 2069 goto pdata_err; 2070 } 2071 2072 init_completion(&radio->busy); 2073 init_waitqueue_head(&radio->read_queue); 2074 2075 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL); 2076 if (!radio->write_buf) { 2077 r = -ENOMEM; 2078 goto write_buf_err; 2079 } 2080 2081 radio->dev = &pdev->dev; 2082 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler; 2083 radio->rds_users = 0; 2084 2085 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev); 2086 if (r) { 2087 dev_err(&pdev->dev, "Cannot register v4l2_device.\n"); 2088 goto write_buf_err; 2089 } 2090 2091 /* V4L2 configuration */ 2092 radio->videodev = wl1273_viddev_template; 2093 2094 radio->videodev.v4l2_dev = &radio->v4l2dev; 2095 2096 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6); 2097 2098 /* add in ascending ID order */ 2099 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2100 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1, 2101 WL1273_DEFAULT_VOLUME); 2102 2103 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2104 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); 2105 2106 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops, 2107 V4L2_CID_TUNE_PREEMPHASIS, 2108 V4L2_PREEMPHASIS_75_uS, 0x03, 2109 V4L2_PREEMPHASIS_50_uS); 2110 2111 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2112 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118); 2113 2114 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2115 V4L2_CID_TUNE_ANTENNA_CAPACITOR, 2116 0, 255, 1, 255); 2117 if (ctrl) 2118 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; 2119 2120 if (radio->ctrl_handler.error) { 2121 r = radio->ctrl_handler.error; 2122 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r); 2123 goto handler_init_err; 2124 } 2125 2126 video_set_drvdata(&radio->videodev, radio); 2127 platform_set_drvdata(pdev, radio); 2128 2129 /* register video device */ 2130 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); 2131 if (r) { 2132 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME 2133 ": Could not register video device\n"); 2134 goto handler_init_err; 2135 } 2136 2137 return 0; 2138 2139 handler_init_err: 2140 v4l2_ctrl_handler_free(&radio->ctrl_handler); 2141 v4l2_device_unregister(&radio->v4l2dev); 2142 write_buf_err: 2143 free_irq(radio->core->client->irq, radio); 2144 err_request_irq: 2145 radio->core->pdata->free_resources(); 2146 pdata_err: 2147 return r; 2148 } 2149 2150 static struct platform_driver wl1273_fm_radio_driver = { 2151 .probe = wl1273_fm_radio_probe, 2152 .remove = wl1273_fm_radio_remove, 2153 .driver = { 2154 .name = "wl1273_fm_radio", 2155 }, 2156 }; 2157 2158 module_platform_driver(wl1273_fm_radio_driver); 2159 2160 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); 2161 MODULE_DESCRIPTION(DRIVER_DESC); 2162 MODULE_LICENSE("GPL"); 2163 MODULE_ALIAS("platform:wl1273_fm_radio"); 2164