1 /* 2 * Driver for the Texas Instruments WL1273 FM radio. 3 * 4 * Copyright (C) 2010 Nokia Corporation 5 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * version 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include <linux/delay.h> 22 #include <linux/firmware.h> 23 #include <linux/interrupt.h> 24 #include <linux/mfd/wl1273-core.h> 25 #include <linux/slab.h> 26 #include <media/v4l2-common.h> 27 #include <media/v4l2-ctrls.h> 28 #include <media/v4l2-device.h> 29 #include <media/v4l2-ioctl.h> 30 31 #define DRIVER_DESC "Wl1273 FM Radio" 32 33 #define WL1273_POWER_SET_OFF 0 34 #define WL1273_POWER_SET_FM BIT(0) 35 #define WL1273_POWER_SET_RDS BIT(1) 36 #define WL1273_POWER_SET_RETENTION BIT(4) 37 38 #define WL1273_PUPD_SET_OFF 0x00 39 #define WL1273_PUPD_SET_ON 0x01 40 #define WL1273_PUPD_SET_RETENTION 0x10 41 42 #define WL1273_FREQ(x) (x * 10000 / 625) 43 #define WL1273_INV_FREQ(x) (x * 625 / 10000) 44 45 /* 46 * static int radio_nr - The number of the radio device 47 * 48 * The default is 0. 49 */ 50 static int radio_nr; 51 module_param(radio_nr, int, 0); 52 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0"); 53 54 struct wl1273_device { 55 char *bus_type; 56 57 u8 forbidden; 58 unsigned int preemphasis; 59 unsigned int spacing; 60 unsigned int tx_power; 61 unsigned int rx_frequency; 62 unsigned int tx_frequency; 63 unsigned int rangelow; 64 unsigned int rangehigh; 65 unsigned int band; 66 bool stereo; 67 68 /* RDS */ 69 unsigned int rds_on; 70 struct delayed_work work; 71 72 wait_queue_head_t read_queue; 73 struct mutex lock; /* for serializing fm radio operations */ 74 struct completion busy; 75 76 unsigned char *buffer; 77 unsigned int buf_size; 78 unsigned int rd_index; 79 unsigned int wr_index; 80 81 /* Selected interrupts */ 82 u16 irq_flags; 83 u16 irq_received; 84 85 struct v4l2_ctrl_handler ctrl_handler; 86 struct v4l2_device v4l2dev; 87 struct video_device videodev; 88 struct device *dev; 89 struct wl1273_core *core; 90 struct file *owner; 91 char *write_buf; 92 unsigned int rds_users; 93 }; 94 95 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \ 96 WL1273_POW_ENB_EVENT) 97 98 /* 99 * static unsigned int rds_buf - the number of RDS buffer blocks used. 100 * 101 * The default number is 100. 102 */ 103 static unsigned int rds_buf = 100; 104 module_param(rds_buf, uint, 0); 105 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100"); 106 107 static int wl1273_fm_read_reg(struct wl1273_core *core, u8 reg, u16 *value) 108 { 109 struct i2c_client *client = core->client; 110 u8 b[2]; 111 int r; 112 113 r = i2c_smbus_read_i2c_block_data(client, reg, sizeof(b), b); 114 if (r != 2) { 115 dev_err(&client->dev, "%s: Read: %d fails.\n", __func__, reg); 116 return -EREMOTEIO; 117 } 118 119 *value = (u16)b[0] << 8 | b[1]; 120 121 return 0; 122 } 123 124 static int wl1273_fm_write_cmd(struct wl1273_core *core, u8 cmd, u16 param) 125 { 126 struct i2c_client *client = core->client; 127 u8 buf[] = { (param >> 8) & 0xff, param & 0xff }; 128 int r; 129 130 r = i2c_smbus_write_i2c_block_data(client, cmd, sizeof(buf), buf); 131 if (r) { 132 dev_err(&client->dev, "%s: Cmd: %d fails.\n", __func__, cmd); 133 return r; 134 } 135 136 return 0; 137 } 138 139 static int wl1273_fm_write_data(struct wl1273_core *core, u8 *data, u16 len) 140 { 141 struct i2c_client *client = core->client; 142 struct i2c_msg msg; 143 int r; 144 145 msg.addr = client->addr; 146 msg.flags = 0; 147 msg.buf = data; 148 msg.len = len; 149 150 r = i2c_transfer(client->adapter, &msg, 1); 151 if (r != 1) { 152 dev_err(&client->dev, "%s: write error.\n", __func__); 153 return -EREMOTEIO; 154 } 155 156 return 0; 157 } 158 159 static int wl1273_fm_write_fw(struct wl1273_core *core, 160 __u8 *fw, int len) 161 { 162 struct i2c_client *client = core->client; 163 struct i2c_msg msg; 164 int i, r = 0; 165 166 msg.addr = client->addr; 167 msg.flags = 0; 168 169 for (i = 0; i <= len; i++) { 170 msg.len = fw[0]; 171 msg.buf = fw + 1; 172 173 fw += msg.len + 1; 174 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len); 175 176 r = i2c_transfer(client->adapter, &msg, 1); 177 if (r < 0 && i < len + 1) 178 break; 179 } 180 181 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i); 182 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1); 183 184 /* Last transfer always fails. */ 185 if (i == len || r == 1) 186 r = 0; 187 188 return r; 189 } 190 191 /** 192 * wl1273_fm_set_audio() - Set audio mode. 193 * @core: A pointer to the device struct. 194 * @new_mode: The new audio mode. 195 * 196 * Audio modes are WL1273_AUDIO_DIGITAL and WL1273_AUDIO_ANALOG. 197 */ 198 static int wl1273_fm_set_audio(struct wl1273_core *core, unsigned int new_mode) 199 { 200 int r = 0; 201 202 if (core->mode == WL1273_MODE_OFF || 203 core->mode == WL1273_MODE_SUSPENDED) 204 return -EPERM; 205 206 if (core->mode == WL1273_MODE_RX && new_mode == WL1273_AUDIO_DIGITAL) { 207 r = wl1273_fm_write_cmd(core, WL1273_PCM_MODE_SET, 208 WL1273_PCM_DEF_MODE); 209 if (r) 210 goto out; 211 212 r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET, 213 core->i2s_mode); 214 if (r) 215 goto out; 216 217 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE, 218 WL1273_AUDIO_ENABLE_I2S); 219 if (r) 220 goto out; 221 222 } else if (core->mode == WL1273_MODE_RX && 223 new_mode == WL1273_AUDIO_ANALOG) { 224 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE, 225 WL1273_AUDIO_ENABLE_ANALOG); 226 if (r) 227 goto out; 228 229 } else if (core->mode == WL1273_MODE_TX && 230 new_mode == WL1273_AUDIO_DIGITAL) { 231 r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET, 232 core->i2s_mode); 233 if (r) 234 goto out; 235 236 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET, 237 WL1273_AUDIO_IO_SET_I2S); 238 if (r) 239 goto out; 240 241 } else if (core->mode == WL1273_MODE_TX && 242 new_mode == WL1273_AUDIO_ANALOG) { 243 r = wl1273_fm_write_cmd(core, WL1273_AUDIO_IO_SET, 244 WL1273_AUDIO_IO_SET_ANALOG); 245 if (r) 246 goto out; 247 } 248 249 core->audio_mode = new_mode; 250 out: 251 return r; 252 } 253 254 /** 255 * wl1273_fm_set_volume() - Set volume. 256 * @core: A pointer to the device struct. 257 * @volume: The new volume value. 258 */ 259 static int wl1273_fm_set_volume(struct wl1273_core *core, unsigned int volume) 260 { 261 u16 val; 262 int r; 263 264 if (volume > WL1273_MAX_VOLUME) 265 return -EINVAL; 266 267 if (core->volume == volume) 268 return 0; 269 270 val = volume; 271 r = wl1273_fm_read_reg(core, WL1273_VOLUME_SET, &val); 272 if (r) 273 return r; 274 275 core->volume = volume; 276 return 0; 277 } 278 279 #define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status) 280 #define WL1273_RDS_CORRECTABLE_ERROR (1 << 3) 281 #define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4) 282 283 static int wl1273_fm_rds(struct wl1273_device *radio) 284 { 285 struct wl1273_core *core = radio->core; 286 struct i2c_client *client = core->client; 287 u16 val; 288 u8 b0 = WL1273_RDS_DATA_GET, status; 289 struct v4l2_rds_data rds = { 0, 0, 0 }; 290 struct i2c_msg msg[] = { 291 { 292 .addr = client->addr, 293 .flags = 0, 294 .buf = &b0, 295 .len = 1, 296 }, 297 { 298 .addr = client->addr, 299 .flags = I2C_M_RD, 300 .buf = (u8 *) &rds, 301 .len = sizeof(rds), 302 } 303 }; 304 int r; 305 306 if (core->mode != WL1273_MODE_RX) 307 return 0; 308 309 r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val); 310 if (r) 311 return r; 312 313 if ((val & 0x01) == 0) { 314 /* RDS decoder not synchronized */ 315 return -EAGAIN; 316 } 317 318 /* copy all four RDS blocks to internal buffer */ 319 do { 320 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); 321 if (r != ARRAY_SIZE(msg)) { 322 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 323 ": %s: read_rds error r == %i)\n", 324 __func__, r); 325 } 326 327 status = rds.block; 328 329 if (!WL1273_FIFO_HAS_DATA(status)) 330 break; 331 332 /* copy bits 0-2 (the block ID) to bits 3-5 */ 333 rds.block = V4L2_RDS_BLOCK_MSK & status; 334 rds.block |= rds.block << 3; 335 336 /* copy the error bits to standard positions */ 337 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) { 338 rds.block |= V4L2_RDS_BLOCK_ERROR; 339 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED; 340 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) { 341 rds.block &= ~V4L2_RDS_BLOCK_ERROR; 342 rds.block |= V4L2_RDS_BLOCK_CORRECTED; 343 } 344 345 /* copy RDS block to internal buffer */ 346 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE); 347 radio->wr_index += 3; 348 349 /* wrap write pointer */ 350 if (radio->wr_index >= radio->buf_size) 351 radio->wr_index = 0; 352 353 /* check for overflow & start over */ 354 if (radio->wr_index == radio->rd_index) { 355 dev_dbg(radio->dev, "RDS OVERFLOW"); 356 357 radio->rd_index = 0; 358 radio->wr_index = 0; 359 break; 360 } 361 } while (WL1273_FIFO_HAS_DATA(status)); 362 363 /* wake up read queue */ 364 if (radio->wr_index != radio->rd_index) 365 wake_up_interruptible(&radio->read_queue); 366 367 return 0; 368 } 369 370 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id) 371 { 372 struct wl1273_device *radio = dev_id; 373 struct wl1273_core *core = radio->core; 374 u16 flags; 375 int r; 376 377 r = wl1273_fm_read_reg(core, WL1273_FLAG_GET, &flags); 378 if (r) 379 goto out; 380 381 if (flags & WL1273_BL_EVENT) { 382 radio->irq_received = flags; 383 dev_dbg(radio->dev, "IRQ: BL\n"); 384 } 385 386 if (flags & WL1273_RDS_EVENT) { 387 msleep(200); 388 389 wl1273_fm_rds(radio); 390 } 391 392 if (flags & WL1273_BBLK_EVENT) 393 dev_dbg(radio->dev, "IRQ: BBLK\n"); 394 395 if (flags & WL1273_LSYNC_EVENT) 396 dev_dbg(radio->dev, "IRQ: LSYNC\n"); 397 398 if (flags & WL1273_LEV_EVENT) { 399 u16 level; 400 401 r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &level); 402 if (r) 403 goto out; 404 405 if (level > 14) 406 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level); 407 } 408 409 if (flags & WL1273_IFFR_EVENT) 410 dev_dbg(radio->dev, "IRQ: IFFR\n"); 411 412 if (flags & WL1273_PI_EVENT) 413 dev_dbg(radio->dev, "IRQ: PI\n"); 414 415 if (flags & WL1273_PD_EVENT) 416 dev_dbg(radio->dev, "IRQ: PD\n"); 417 418 if (flags & WL1273_STIC_EVENT) 419 dev_dbg(radio->dev, "IRQ: STIC\n"); 420 421 if (flags & WL1273_MAL_EVENT) 422 dev_dbg(radio->dev, "IRQ: MAL\n"); 423 424 if (flags & WL1273_POW_ENB_EVENT) { 425 complete(&radio->busy); 426 dev_dbg(radio->dev, "NOT BUSY\n"); 427 dev_dbg(radio->dev, "IRQ: POW_ENB\n"); 428 } 429 430 if (flags & WL1273_SCAN_OVER_EVENT) 431 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n"); 432 433 if (flags & WL1273_ERROR_EVENT) 434 dev_dbg(radio->dev, "IRQ: ERROR\n"); 435 436 if (flags & WL1273_FR_EVENT) { 437 u16 freq; 438 439 dev_dbg(radio->dev, "IRQ: FR:\n"); 440 441 if (core->mode == WL1273_MODE_RX) { 442 r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET, 443 TUNER_MODE_STOP_SEARCH); 444 if (r) { 445 dev_err(radio->dev, 446 "%s: TUNER_MODE_SET fails: %d\n", 447 __func__, r); 448 goto out; 449 } 450 451 r = wl1273_fm_read_reg(core, WL1273_FREQ_SET, &freq); 452 if (r) 453 goto out; 454 455 if (radio->band == WL1273_BAND_JAPAN) 456 radio->rx_frequency = WL1273_BAND_JAPAN_LOW + 457 freq * 50; 458 else 459 radio->rx_frequency = WL1273_BAND_OTHER_LOW + 460 freq * 50; 461 /* 462 * The driver works better with this msleep, 463 * the documentation doesn't mention it. 464 */ 465 usleep_range(10000, 15000); 466 467 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency); 468 469 } else { 470 r = wl1273_fm_read_reg(core, WL1273_CHANL_SET, &freq); 471 if (r) 472 goto out; 473 474 dev_dbg(radio->dev, "%dkHz\n", freq); 475 } 476 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__); 477 } 478 479 out: 480 wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, 481 radio->irq_flags); 482 complete(&radio->busy); 483 484 return IRQ_HANDLED; 485 } 486 487 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq) 488 { 489 struct wl1273_core *core = radio->core; 490 int r = 0; 491 492 if (freq < WL1273_BAND_TX_LOW) { 493 dev_err(radio->dev, 494 "Frequency out of range: %d < %d\n", freq, 495 WL1273_BAND_TX_LOW); 496 return -ERANGE; 497 } 498 499 if (freq > WL1273_BAND_TX_HIGH) { 500 dev_err(radio->dev, 501 "Frequency out of range: %d > %d\n", freq, 502 WL1273_BAND_TX_HIGH); 503 return -ERANGE; 504 } 505 506 /* 507 * The driver works better with this sleep, 508 * the documentation doesn't mention it. 509 */ 510 usleep_range(5000, 10000); 511 512 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq); 513 514 /* Set the current tx channel */ 515 r = wl1273_fm_write_cmd(core, WL1273_CHANL_SET, freq / 10); 516 if (r) 517 return r; 518 519 INIT_COMPLETION(radio->busy); 520 521 /* wait for the FR IRQ */ 522 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); 523 if (!r) 524 return -ETIMEDOUT; 525 526 dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r); 527 528 /* Enable the output power */ 529 r = wl1273_fm_write_cmd(core, WL1273_POWER_ENB_SET, 1); 530 if (r) 531 return r; 532 533 INIT_COMPLETION(radio->busy); 534 535 /* wait for the POWER_ENB IRQ */ 536 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 537 if (!r) 538 return -ETIMEDOUT; 539 540 radio->tx_frequency = freq; 541 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r); 542 543 return 0; 544 } 545 546 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq) 547 { 548 struct wl1273_core *core = radio->core; 549 int r, f; 550 551 if (freq < radio->rangelow) { 552 dev_err(radio->dev, 553 "Frequency out of range: %d < %d\n", freq, 554 radio->rangelow); 555 r = -ERANGE; 556 goto err; 557 } 558 559 if (freq > radio->rangehigh) { 560 dev_err(radio->dev, 561 "Frequency out of range: %d > %d\n", freq, 562 radio->rangehigh); 563 r = -ERANGE; 564 goto err; 565 } 566 567 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq); 568 569 wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, radio->irq_flags); 570 571 if (radio->band == WL1273_BAND_JAPAN) 572 f = (freq - WL1273_BAND_JAPAN_LOW) / 50; 573 else 574 f = (freq - WL1273_BAND_OTHER_LOW) / 50; 575 576 r = wl1273_fm_write_cmd(core, WL1273_FREQ_SET, f); 577 if (r) { 578 dev_err(radio->dev, "FREQ_SET fails\n"); 579 goto err; 580 } 581 582 r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET); 583 if (r) { 584 dev_err(radio->dev, "TUNER_MODE_SET fails\n"); 585 goto err; 586 } 587 588 INIT_COMPLETION(radio->busy); 589 590 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000)); 591 if (!r) { 592 dev_err(radio->dev, "%s: TIMEOUT\n", __func__); 593 return -ETIMEDOUT; 594 } 595 596 radio->rd_index = 0; 597 radio->wr_index = 0; 598 radio->rx_frequency = freq; 599 return 0; 600 err: 601 return r; 602 } 603 604 static int wl1273_fm_get_freq(struct wl1273_device *radio) 605 { 606 struct wl1273_core *core = radio->core; 607 unsigned int freq; 608 u16 f; 609 int r; 610 611 if (core->mode == WL1273_MODE_RX) { 612 r = wl1273_fm_read_reg(core, WL1273_FREQ_SET, &f); 613 if (r) 614 return r; 615 616 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f); 617 if (radio->band == WL1273_BAND_JAPAN) 618 freq = WL1273_BAND_JAPAN_LOW + 50 * f; 619 else 620 freq = WL1273_BAND_OTHER_LOW + 50 * f; 621 } else { 622 r = wl1273_fm_read_reg(core, WL1273_CHANL_SET, &f); 623 if (r) 624 return r; 625 626 freq = f * 10; 627 } 628 629 return freq; 630 } 631 632 /** 633 * wl1273_fm_upload_firmware_patch() - Upload the firmware. 634 * @radio: A pointer to the device struct. 635 * 636 * The firmware file consists of arrays of bytes where the first byte 637 * gives the array length. The first byte in the file gives the 638 * number of these arrays. 639 */ 640 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio) 641 { 642 struct wl1273_core *core = radio->core; 643 unsigned int packet_num; 644 const struct firmware *fw_p; 645 const char *fw_name = "radio-wl1273-fw.bin"; 646 struct device *dev = radio->dev; 647 __u8 *ptr; 648 int r; 649 650 dev_dbg(dev, "%s:\n", __func__); 651 652 /* 653 * Uploading the firmware patch is not always necessary, 654 * so we only print an info message. 655 */ 656 if (request_firmware(&fw_p, fw_name, dev)) { 657 dev_info(dev, "%s - %s not found\n", __func__, fw_name); 658 659 return 0; 660 } 661 662 ptr = (__u8 *) fw_p->data; 663 packet_num = ptr[0]; 664 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num); 665 666 r = wl1273_fm_write_fw(core, ptr + 1, packet_num); 667 if (r) { 668 dev_err(dev, "FW upload error: %d\n", r); 669 goto out; 670 } 671 672 /* ignore possible error here */ 673 wl1273_fm_write_cmd(core, WL1273_RESET, 0); 674 675 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r); 676 out: 677 release_firmware(fw_p); 678 return r; 679 } 680 681 static int wl1273_fm_stop(struct wl1273_device *radio) 682 { 683 struct wl1273_core *core = radio->core; 684 685 if (core->mode == WL1273_MODE_RX) { 686 int r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, 687 WL1273_POWER_SET_OFF); 688 if (r) 689 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", 690 __func__, r); 691 } else if (core->mode == WL1273_MODE_TX) { 692 int r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET, 693 WL1273_PUPD_SET_OFF); 694 if (r) 695 dev_err(radio->dev, 696 "%s: PUPD_SET fails: %d\n", __func__, r); 697 } 698 699 if (core->pdata->disable) { 700 core->pdata->disable(); 701 dev_dbg(radio->dev, "Back to reset\n"); 702 } 703 704 return 0; 705 } 706 707 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode) 708 { 709 struct wl1273_core *core = radio->core; 710 struct wl1273_fm_platform_data *pdata = core->pdata; 711 struct device *dev = radio->dev; 712 int r = -EINVAL; 713 714 if (pdata->enable && core->mode == WL1273_MODE_OFF) { 715 dev_dbg(radio->dev, "Out of reset\n"); 716 717 pdata->enable(); 718 msleep(250); 719 } 720 721 if (new_mode == WL1273_MODE_RX) { 722 u16 val = WL1273_POWER_SET_FM; 723 724 if (radio->rds_on) 725 val |= WL1273_POWER_SET_RDS; 726 727 /* If this fails try again */ 728 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, val); 729 if (r) { 730 msleep(100); 731 732 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, val); 733 if (r) { 734 dev_err(dev, "%s: POWER_SET fails\n", __func__); 735 goto fail; 736 } 737 } 738 739 /* rds buffer configuration */ 740 radio->wr_index = 0; 741 radio->rd_index = 0; 742 743 } else if (new_mode == WL1273_MODE_TX) { 744 /* If this fails try again once */ 745 r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET, 746 WL1273_PUPD_SET_ON); 747 if (r) { 748 msleep(100); 749 r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET, 750 WL1273_PUPD_SET_ON); 751 if (r) { 752 dev_err(dev, "%s: PUPD_SET fails\n", __func__); 753 goto fail; 754 } 755 } 756 757 if (radio->rds_on) 758 r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 1); 759 else 760 r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 0); 761 } else { 762 dev_warn(dev, "%s: Illegal mode.\n", __func__); 763 } 764 765 if (core->mode == WL1273_MODE_OFF) { 766 r = wl1273_fm_upload_firmware_patch(radio); 767 if (r) 768 dev_warn(dev, "Firmware upload failed.\n"); 769 770 /* 771 * Sometimes the chip is in a wrong power state at this point. 772 * So we set the power once again. 773 */ 774 if (new_mode == WL1273_MODE_RX) { 775 u16 val = WL1273_POWER_SET_FM; 776 777 if (radio->rds_on) 778 val |= WL1273_POWER_SET_RDS; 779 780 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, val); 781 if (r) { 782 dev_err(dev, "%s: POWER_SET fails\n", __func__); 783 goto fail; 784 } 785 } else if (new_mode == WL1273_MODE_TX) { 786 r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET, 787 WL1273_PUPD_SET_ON); 788 if (r) { 789 dev_err(dev, "%s: PUPD_SET fails\n", __func__); 790 goto fail; 791 } 792 } 793 } 794 795 return 0; 796 fail: 797 if (pdata->disable) 798 pdata->disable(); 799 800 dev_dbg(dev, "%s: return: %d\n", __func__, r); 801 return r; 802 } 803 804 static int wl1273_fm_suspend(struct wl1273_device *radio) 805 { 806 struct wl1273_core *core = radio->core; 807 int r = 0; 808 809 /* Cannot go from OFF to SUSPENDED */ 810 if (core->mode == WL1273_MODE_RX) 811 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, 812 WL1273_POWER_SET_RETENTION); 813 else if (core->mode == WL1273_MODE_TX) 814 r = wl1273_fm_write_cmd(core, WL1273_PUPD_SET, 815 WL1273_PUPD_SET_RETENTION); 816 else 817 r = -EINVAL; 818 819 if (r) { 820 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r); 821 goto out; 822 } 823 824 out: 825 return r; 826 } 827 828 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode) 829 { 830 struct wl1273_core *core = radio->core; 831 struct device *dev = radio->dev; 832 int old_mode; 833 int r; 834 835 dev_dbg(dev, "%s\n", __func__); 836 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden); 837 838 old_mode = core->mode; 839 if (mode & radio->forbidden) { 840 r = -EPERM; 841 goto out; 842 } 843 844 switch (mode) { 845 case WL1273_MODE_RX: 846 case WL1273_MODE_TX: 847 r = wl1273_fm_start(radio, mode); 848 if (r) { 849 dev_err(dev, "%s: Cannot start.\n", __func__); 850 wl1273_fm_stop(radio); 851 goto out; 852 } 853 854 core->mode = mode; 855 r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, 856 radio->irq_flags); 857 if (r) { 858 dev_err(dev, "INT_MASK_SET fails.\n"); 859 goto out; 860 } 861 862 /* remember previous settings */ 863 if (mode == WL1273_MODE_RX) { 864 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 865 if (r) { 866 dev_err(dev, "set freq fails: %d.\n", r); 867 goto out; 868 } 869 870 r = core->set_volume(core, core->volume); 871 if (r) { 872 dev_err(dev, "set volume fails: %d.\n", r); 873 goto out; 874 } 875 876 dev_dbg(dev, "%s: Set vol: %d.\n", __func__, 877 core->volume); 878 } else { 879 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency); 880 if (r) { 881 dev_err(dev, "set freq fails: %d.\n", r); 882 goto out; 883 } 884 } 885 886 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__); 887 888 r = core->set_audio(core, core->audio_mode); 889 if (r) 890 dev_err(dev, "Cannot set audio mode.\n"); 891 break; 892 893 case WL1273_MODE_OFF: 894 r = wl1273_fm_stop(radio); 895 if (r) 896 dev_err(dev, "%s: Off fails: %d\n", __func__, r); 897 else 898 core->mode = WL1273_MODE_OFF; 899 900 break; 901 902 case WL1273_MODE_SUSPENDED: 903 r = wl1273_fm_suspend(radio); 904 if (r) 905 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r); 906 else 907 core->mode = WL1273_MODE_SUSPENDED; 908 909 break; 910 911 default: 912 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode); 913 r = -EINVAL; 914 break; 915 } 916 out: 917 if (r) 918 core->mode = old_mode; 919 920 return r; 921 } 922 923 static int wl1273_fm_set_seek(struct wl1273_device *radio, 924 unsigned int wrap_around, 925 unsigned int seek_upward, 926 int level) 927 { 928 struct wl1273_core *core = radio->core; 929 int r = 0; 930 unsigned int dir = (seek_upward == 0) ? 0 : 1; 931 unsigned int f; 932 933 f = radio->rx_frequency; 934 dev_dbg(radio->dev, "rx_frequency: %d\n", f); 935 936 if (dir && f + radio->spacing <= radio->rangehigh) 937 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing); 938 else if (dir && wrap_around) 939 r = wl1273_fm_set_rx_freq(radio, radio->rangelow); 940 else if (f - radio->spacing >= radio->rangelow) 941 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing); 942 else if (wrap_around) 943 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh); 944 945 if (r) 946 goto out; 947 948 if (level < SCHAR_MIN || level > SCHAR_MAX) 949 return -EINVAL; 950 951 INIT_COMPLETION(radio->busy); 952 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 953 954 r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, radio->irq_flags); 955 if (r) 956 goto out; 957 958 dev_dbg(radio->dev, "%s\n", __func__); 959 960 r = wl1273_fm_write_cmd(core, WL1273_SEARCH_LVL_SET, level); 961 if (r) 962 goto out; 963 964 r = wl1273_fm_write_cmd(core, WL1273_SEARCH_DIR_SET, dir); 965 if (r) 966 goto out; 967 968 r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET, 969 TUNER_MODE_AUTO_SEEK); 970 if (r) 971 goto out; 972 973 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 974 if (!(radio->irq_received & WL1273_BL_EVENT)) 975 goto out; 976 977 radio->irq_received &= ~WL1273_BL_EVENT; 978 979 if (!wrap_around) 980 goto out; 981 982 /* Wrap around */ 983 dev_dbg(radio->dev, "Wrap around in HW seek.\n"); 984 985 if (seek_upward) 986 f = radio->rangelow; 987 else 988 f = radio->rangehigh; 989 990 r = wl1273_fm_set_rx_freq(radio, f); 991 if (r) 992 goto out; 993 994 INIT_COMPLETION(radio->busy); 995 dev_dbg(radio->dev, "%s: BUSY\n", __func__); 996 997 r = wl1273_fm_write_cmd(core, WL1273_TUNER_MODE_SET, 998 TUNER_MODE_AUTO_SEEK); 999 if (r) 1000 goto out; 1001 1002 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)); 1003 out: 1004 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r); 1005 return r; 1006 } 1007 1008 /** 1009 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value. 1010 * @radio: A pointer to the device struct. 1011 */ 1012 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio) 1013 { 1014 struct wl1273_core *core = radio->core; 1015 struct device *dev = radio->dev; 1016 u16 val; 1017 int r; 1018 1019 if (core->mode == WL1273_MODE_OFF || 1020 core->mode == WL1273_MODE_SUSPENDED) 1021 return -EPERM; 1022 1023 r = wl1273_fm_read_reg(core, WL1273_READ_FMANT_TUNE_VALUE, &val); 1024 if (r) { 1025 dev_err(dev, "%s: read error: %d\n", __func__, r); 1026 goto out; 1027 } 1028 1029 out: 1030 return val; 1031 } 1032 1033 /** 1034 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value. 1035 * @radio: A pointer to the device struct. 1036 * @preemphasis: The new pre-amphasis value. 1037 * 1038 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED, 1039 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS. 1040 */ 1041 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio, 1042 unsigned int preemphasis) 1043 { 1044 struct wl1273_core *core = radio->core; 1045 int r; 1046 u16 em; 1047 1048 if (core->mode == WL1273_MODE_OFF || 1049 core->mode == WL1273_MODE_SUSPENDED) 1050 return -EPERM; 1051 1052 mutex_lock(&core->lock); 1053 1054 switch (preemphasis) { 1055 case V4L2_PREEMPHASIS_DISABLED: 1056 em = 1; 1057 break; 1058 case V4L2_PREEMPHASIS_50_uS: 1059 em = 0; 1060 break; 1061 case V4L2_PREEMPHASIS_75_uS: 1062 em = 2; 1063 break; 1064 default: 1065 r = -EINVAL; 1066 goto out; 1067 } 1068 1069 r = wl1273_fm_write_cmd(core, WL1273_PREMPH_SET, em); 1070 if (r) 1071 goto out; 1072 1073 radio->preemphasis = preemphasis; 1074 1075 out: 1076 mutex_unlock(&core->lock); 1077 return r; 1078 } 1079 1080 static int wl1273_fm_rds_on(struct wl1273_device *radio) 1081 { 1082 struct wl1273_core *core = radio->core; 1083 int r; 1084 1085 dev_dbg(radio->dev, "%s\n", __func__); 1086 if (radio->rds_on) 1087 return 0; 1088 1089 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, 1090 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS); 1091 if (r) 1092 goto out; 1093 1094 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 1095 if (r) 1096 dev_err(radio->dev, "set freq fails: %d.\n", r); 1097 out: 1098 return r; 1099 } 1100 1101 static int wl1273_fm_rds_off(struct wl1273_device *radio) 1102 { 1103 struct wl1273_core *core = radio->core; 1104 int r; 1105 1106 if (!radio->rds_on) 1107 return 0; 1108 1109 radio->irq_flags &= ~WL1273_RDS_EVENT; 1110 1111 r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, radio->irq_flags); 1112 if (r) 1113 goto out; 1114 1115 /* stop rds reception */ 1116 cancel_delayed_work(&radio->work); 1117 1118 /* Service pending read */ 1119 wake_up_interruptible(&radio->read_queue); 1120 1121 dev_dbg(radio->dev, "%s\n", __func__); 1122 1123 r = wl1273_fm_write_cmd(core, WL1273_POWER_SET, WL1273_POWER_SET_FM); 1124 if (r) 1125 goto out; 1126 1127 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency); 1128 if (r) 1129 dev_err(radio->dev, "set freq fails: %d.\n", r); 1130 out: 1131 dev_dbg(radio->dev, "%s: exiting...\n", __func__); 1132 1133 return r; 1134 } 1135 1136 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode) 1137 { 1138 int r = 0; 1139 struct wl1273_core *core = radio->core; 1140 1141 if (core->mode == WL1273_MODE_OFF || 1142 core->mode == WL1273_MODE_SUSPENDED) 1143 return -EPERM; 1144 1145 if (new_mode == WL1273_RDS_RESET) { 1146 r = wl1273_fm_write_cmd(core, WL1273_RDS_CNTRL_SET, 1); 1147 return r; 1148 } 1149 1150 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) { 1151 r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 0); 1152 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) { 1153 r = wl1273_fm_write_cmd(core, WL1273_RDS_DATA_ENB, 1); 1154 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) { 1155 r = wl1273_fm_rds_off(radio); 1156 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) { 1157 r = wl1273_fm_rds_on(radio); 1158 } else { 1159 dev_err(radio->dev, "%s: Unknown mode: %d\n", 1160 __func__, new_mode); 1161 r = -EINVAL; 1162 } 1163 1164 if (!r) 1165 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false; 1166 1167 return r; 1168 } 1169 1170 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf, 1171 size_t count, loff_t *ppos) 1172 { 1173 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1174 u16 val; 1175 int r; 1176 1177 dev_dbg(radio->dev, "%s\n", __func__); 1178 1179 if (radio->core->mode != WL1273_MODE_TX) 1180 return count; 1181 1182 if (radio->rds_users == 0) { 1183 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1184 return 0; 1185 } 1186 1187 if (mutex_lock_interruptible(&radio->core->lock)) 1188 return -EINTR; 1189 /* 1190 * Multiple processes can open the device, but only 1191 * one gets to write to it. 1192 */ 1193 if (radio->owner && radio->owner != file) { 1194 r = -EBUSY; 1195 goto out; 1196 } 1197 radio->owner = file; 1198 1199 /* Manual Mode */ 1200 if (count > 255) 1201 val = 255; 1202 else 1203 val = count; 1204 1205 wl1273_fm_write_cmd(radio->core, WL1273_RDS_CONFIG_DATA_SET, val); 1206 1207 if (copy_from_user(radio->write_buf + 1, buf, val)) { 1208 r = -EFAULT; 1209 goto out; 1210 } 1211 1212 dev_dbg(radio->dev, "Count: %d\n", val); 1213 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf); 1214 1215 radio->write_buf[0] = WL1273_RDS_DATA_SET; 1216 wl1273_fm_write_data(radio->core, radio->write_buf, val + 1); 1217 1218 r = val; 1219 out: 1220 mutex_unlock(&radio->core->lock); 1221 1222 return r; 1223 } 1224 1225 static unsigned int wl1273_fm_fops_poll(struct file *file, 1226 struct poll_table_struct *pts) 1227 { 1228 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1229 struct wl1273_core *core = radio->core; 1230 1231 if (radio->owner && radio->owner != file) 1232 return -EBUSY; 1233 1234 radio->owner = file; 1235 1236 if (core->mode == WL1273_MODE_RX) { 1237 poll_wait(file, &radio->read_queue, pts); 1238 1239 if (radio->rd_index != radio->wr_index) 1240 return POLLIN | POLLRDNORM; 1241 1242 } else if (core->mode == WL1273_MODE_TX) { 1243 return POLLOUT | POLLWRNORM; 1244 } 1245 1246 return 0; 1247 } 1248 1249 static int wl1273_fm_fops_open(struct file *file) 1250 { 1251 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1252 struct wl1273_core *core = radio->core; 1253 int r = 0; 1254 1255 dev_dbg(radio->dev, "%s\n", __func__); 1256 1257 if (core->mode == WL1273_MODE_RX && radio->rds_on && 1258 !radio->rds_users) { 1259 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode); 1260 1261 if (mutex_lock_interruptible(&core->lock)) 1262 return -EINTR; 1263 1264 radio->irq_flags |= WL1273_RDS_EVENT; 1265 1266 r = wl1273_fm_write_cmd(core, WL1273_INT_MASK_SET, 1267 radio->irq_flags); 1268 if (r) { 1269 mutex_unlock(&core->lock); 1270 goto out; 1271 } 1272 1273 radio->rds_users++; 1274 1275 mutex_unlock(&core->lock); 1276 } 1277 out: 1278 return r; 1279 } 1280 1281 static int wl1273_fm_fops_release(struct file *file) 1282 { 1283 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1284 struct wl1273_core *core = radio->core; 1285 int r = 0; 1286 1287 dev_dbg(radio->dev, "%s\n", __func__); 1288 1289 if (radio->rds_users > 0) { 1290 radio->rds_users--; 1291 if (radio->rds_users == 0) { 1292 if (mutex_lock_interruptible(&core->lock)) 1293 return -EINTR; 1294 1295 radio->irq_flags &= ~WL1273_RDS_EVENT; 1296 1297 if (core->mode == WL1273_MODE_RX) { 1298 r = wl1273_fm_write_cmd(core, 1299 WL1273_INT_MASK_SET, 1300 radio->irq_flags); 1301 if (r) { 1302 mutex_unlock(&core->lock); 1303 goto out; 1304 } 1305 } 1306 mutex_unlock(&core->lock); 1307 } 1308 } 1309 1310 if (file == radio->owner) 1311 radio->owner = NULL; 1312 out: 1313 return r; 1314 } 1315 1316 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf, 1317 size_t count, loff_t *ppos) 1318 { 1319 int r = 0; 1320 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1321 struct wl1273_core *core = radio->core; 1322 unsigned int block_count = 0; 1323 u16 val; 1324 1325 dev_dbg(radio->dev, "%s\n", __func__); 1326 1327 if (radio->core->mode != WL1273_MODE_RX) 1328 return 0; 1329 1330 if (radio->rds_users == 0) { 1331 dev_warn(radio->dev, "%s: RDS not on.\n", __func__); 1332 return 0; 1333 } 1334 1335 if (mutex_lock_interruptible(&core->lock)) 1336 return -EINTR; 1337 1338 /* 1339 * Multiple processes can open the device, but only 1340 * one at a time gets read access. 1341 */ 1342 if (radio->owner && radio->owner != file) { 1343 r = -EBUSY; 1344 goto out; 1345 } 1346 radio->owner = file; 1347 1348 r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val); 1349 if (r) { 1350 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__); 1351 goto out; 1352 } else if (val == 0) { 1353 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n"); 1354 r = -ENODATA; 1355 goto out; 1356 } 1357 1358 /* block if no new data available */ 1359 while (radio->wr_index == radio->rd_index) { 1360 if (file->f_flags & O_NONBLOCK) { 1361 r = -EWOULDBLOCK; 1362 goto out; 1363 } 1364 1365 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__); 1366 if (wait_event_interruptible(radio->read_queue, 1367 radio->wr_index != 1368 radio->rd_index) < 0) { 1369 r = -EINTR; 1370 goto out; 1371 } 1372 } 1373 1374 /* calculate block count from byte count */ 1375 count /= RDS_BLOCK_SIZE; 1376 1377 /* copy RDS blocks from the internal buffer and to user buffer */ 1378 while (block_count < count) { 1379 if (radio->rd_index == radio->wr_index) 1380 break; 1381 1382 /* always transfer complete RDS blocks */ 1383 if (copy_to_user(buf, &radio->buffer[radio->rd_index], 1384 RDS_BLOCK_SIZE)) 1385 break; 1386 1387 /* increment and wrap the read pointer */ 1388 radio->rd_index += RDS_BLOCK_SIZE; 1389 if (radio->rd_index >= radio->buf_size) 1390 radio->rd_index = 0; 1391 1392 /* increment counters */ 1393 block_count++; 1394 buf += RDS_BLOCK_SIZE; 1395 r += RDS_BLOCK_SIZE; 1396 } 1397 1398 out: 1399 dev_dbg(radio->dev, "%s: exit\n", __func__); 1400 mutex_unlock(&core->lock); 1401 1402 return r; 1403 } 1404 1405 static const struct v4l2_file_operations wl1273_fops = { 1406 .owner = THIS_MODULE, 1407 .read = wl1273_fm_fops_read, 1408 .write = wl1273_fm_fops_write, 1409 .poll = wl1273_fm_fops_poll, 1410 .unlocked_ioctl = video_ioctl2, 1411 .open = wl1273_fm_fops_open, 1412 .release = wl1273_fm_fops_release, 1413 }; 1414 1415 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv, 1416 struct v4l2_capability *capability) 1417 { 1418 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1419 1420 dev_dbg(radio->dev, "%s\n", __func__); 1421 1422 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME, 1423 sizeof(capability->driver)); 1424 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio", 1425 sizeof(capability->card)); 1426 strlcpy(capability->bus_info, radio->bus_type, 1427 sizeof(capability->bus_info)); 1428 1429 capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | 1430 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO | 1431 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR | 1432 V4L2_CAP_RDS_OUTPUT; 1433 1434 return 0; 1435 } 1436 1437 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv, 1438 unsigned int *i) 1439 { 1440 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1441 1442 dev_dbg(radio->dev, "%s\n", __func__); 1443 1444 *i = 0; 1445 1446 return 0; 1447 } 1448 1449 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv, 1450 unsigned int i) 1451 { 1452 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1453 1454 dev_dbg(radio->dev, "%s\n", __func__); 1455 1456 if (i != 0) 1457 return -EINVAL; 1458 1459 return 0; 1460 } 1461 1462 /** 1463 * wl1273_fm_set_tx_power() - Set the transmission power value. 1464 * @core: A pointer to the device struct. 1465 * @power: The new power value. 1466 */ 1467 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power) 1468 { 1469 int r; 1470 1471 if (radio->core->mode == WL1273_MODE_OFF || 1472 radio->core->mode == WL1273_MODE_SUSPENDED) 1473 return -EPERM; 1474 1475 mutex_lock(&radio->core->lock); 1476 1477 /* Convert the dBuV value to chip presentation */ 1478 r = wl1273_fm_write_cmd(radio->core, WL1273_POWER_LEV_SET, 122 - power); 1479 if (r) 1480 goto out; 1481 1482 radio->tx_power = power; 1483 1484 out: 1485 mutex_unlock(&radio->core->lock); 1486 return r; 1487 } 1488 1489 #define WL1273_SPACING_50kHz 1 1490 #define WL1273_SPACING_100kHz 2 1491 #define WL1273_SPACING_200kHz 4 1492 1493 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio, 1494 unsigned int spacing) 1495 { 1496 int r; 1497 1498 if (spacing == 0) { 1499 r = wl1273_fm_write_cmd(radio->core, WL1273_SCAN_SPACING_SET, 1500 WL1273_SPACING_100kHz); 1501 radio->spacing = 100; 1502 } else if (spacing - 50000 < 25000) { 1503 r = wl1273_fm_write_cmd(radio->core, WL1273_SCAN_SPACING_SET, 1504 WL1273_SPACING_50kHz); 1505 radio->spacing = 50; 1506 } else if (spacing - 100000 < 50000) { 1507 r = wl1273_fm_write_cmd(radio->core, WL1273_SCAN_SPACING_SET, 1508 WL1273_SPACING_100kHz); 1509 radio->spacing = 100; 1510 } else { 1511 r = wl1273_fm_write_cmd(radio->core, WL1273_SCAN_SPACING_SET, 1512 WL1273_SPACING_200kHz); 1513 radio->spacing = 200; 1514 } 1515 1516 return r; 1517 } 1518 1519 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1520 { 1521 struct wl1273_device *radio = ctrl->priv; 1522 struct wl1273_core *core = radio->core; 1523 1524 dev_dbg(radio->dev, "%s\n", __func__); 1525 1526 if (mutex_lock_interruptible(&core->lock)) 1527 return -EINTR; 1528 1529 switch (ctrl->id) { 1530 case V4L2_CID_TUNE_ANTENNA_CAPACITOR: 1531 ctrl->val = wl1273_fm_get_tx_ctune(radio); 1532 break; 1533 1534 default: 1535 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1536 __func__, ctrl->id); 1537 break; 1538 } 1539 1540 mutex_unlock(&core->lock); 1541 1542 return 0; 1543 } 1544 1545 #define WL1273_MUTE_SOFT_ENABLE (1 << 0) 1546 #define WL1273_MUTE_AC (1 << 1) 1547 #define WL1273_MUTE_HARD_LEFT (1 << 2) 1548 #define WL1273_MUTE_HARD_RIGHT (1 << 3) 1549 #define WL1273_MUTE_SOFT_FORCE (1 << 4) 1550 1551 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl) 1552 { 1553 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler); 1554 } 1555 1556 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl) 1557 { 1558 struct wl1273_device *radio = to_radio(ctrl); 1559 struct wl1273_core *core = radio->core; 1560 int r = 0; 1561 1562 dev_dbg(radio->dev, "%s\n", __func__); 1563 1564 switch (ctrl->id) { 1565 case V4L2_CID_AUDIO_MUTE: 1566 if (mutex_lock_interruptible(&core->lock)) 1567 return -EINTR; 1568 1569 if (core->mode == WL1273_MODE_RX && ctrl->val) 1570 r = wl1273_fm_write_cmd(core, 1571 WL1273_MUTE_STATUS_SET, 1572 WL1273_MUTE_HARD_LEFT | 1573 WL1273_MUTE_HARD_RIGHT); 1574 else if (core->mode == WL1273_MODE_RX) 1575 r = wl1273_fm_write_cmd(core, 1576 WL1273_MUTE_STATUS_SET, 0x0); 1577 else if (core->mode == WL1273_MODE_TX && ctrl->val) 1578 r = wl1273_fm_write_cmd(core, WL1273_MUTE, 1); 1579 else if (core->mode == WL1273_MODE_TX) 1580 r = wl1273_fm_write_cmd(core, WL1273_MUTE, 0); 1581 1582 mutex_unlock(&core->lock); 1583 break; 1584 1585 case V4L2_CID_AUDIO_VOLUME: 1586 if (ctrl->val == 0) 1587 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF); 1588 else 1589 r = core->set_volume(core, core->volume); 1590 break; 1591 1592 case V4L2_CID_TUNE_PREEMPHASIS: 1593 r = wl1273_fm_set_preemphasis(radio, ctrl->val); 1594 break; 1595 1596 case V4L2_CID_TUNE_POWER_LEVEL: 1597 r = wl1273_fm_set_tx_power(radio, ctrl->val); 1598 break; 1599 1600 default: 1601 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n", 1602 __func__, ctrl->id); 1603 break; 1604 } 1605 1606 dev_dbg(radio->dev, "%s\n", __func__); 1607 return r; 1608 } 1609 1610 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv, 1611 struct v4l2_audio *audio) 1612 { 1613 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1614 1615 dev_dbg(radio->dev, "%s\n", __func__); 1616 1617 if (audio->index > 1) 1618 return -EINVAL; 1619 1620 strlcpy(audio->name, "Radio", sizeof(audio->name)); 1621 audio->capability = V4L2_AUDCAP_STEREO; 1622 1623 return 0; 1624 } 1625 1626 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv, 1627 struct v4l2_audio *audio) 1628 { 1629 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1630 1631 dev_dbg(radio->dev, "%s\n", __func__); 1632 1633 if (audio->index != 0) 1634 return -EINVAL; 1635 1636 return 0; 1637 } 1638 1639 #define WL1273_RDS_NOT_SYNCHRONIZED 0 1640 #define WL1273_RDS_SYNCHRONIZED 1 1641 1642 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv, 1643 struct v4l2_tuner *tuner) 1644 { 1645 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1646 struct wl1273_core *core = radio->core; 1647 u16 val; 1648 int r; 1649 1650 dev_dbg(radio->dev, "%s\n", __func__); 1651 1652 if (tuner->index > 0) 1653 return -EINVAL; 1654 1655 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name)); 1656 tuner->type = V4L2_TUNER_RADIO; 1657 1658 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1659 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1660 1661 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1662 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO; 1663 1664 if (radio->stereo) 1665 tuner->audmode = V4L2_TUNER_MODE_STEREO; 1666 else 1667 tuner->audmode = V4L2_TUNER_MODE_MONO; 1668 1669 if (core->mode != WL1273_MODE_RX) 1670 return 0; 1671 1672 if (mutex_lock_interruptible(&core->lock)) 1673 return -EINTR; 1674 1675 r = wl1273_fm_read_reg(core, WL1273_STEREO_GET, &val); 1676 if (r) 1677 goto out; 1678 1679 if (val == 1) 1680 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; 1681 else 1682 tuner->rxsubchans = V4L2_TUNER_SUB_MONO; 1683 1684 r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &val); 1685 if (r) 1686 goto out; 1687 1688 tuner->signal = (s16) val; 1689 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal); 1690 1691 tuner->afc = 0; 1692 1693 r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val); 1694 if (r) 1695 goto out; 1696 1697 if (val == WL1273_RDS_SYNCHRONIZED) 1698 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; 1699 out: 1700 mutex_unlock(&core->lock); 1701 1702 return r; 1703 } 1704 1705 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv, 1706 struct v4l2_tuner *tuner) 1707 { 1708 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1709 struct wl1273_core *core = radio->core; 1710 int r = 0; 1711 1712 dev_dbg(radio->dev, "%s\n", __func__); 1713 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index); 1714 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name); 1715 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability); 1716 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans); 1717 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow); 1718 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh); 1719 1720 if (tuner->index > 0) 1721 return -EINVAL; 1722 1723 if (mutex_lock_interruptible(&core->lock)) 1724 return -EINTR; 1725 1726 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1727 if (r) 1728 goto out; 1729 1730 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) 1731 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1732 else 1733 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1734 1735 if (r) 1736 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r); 1737 1738 if (tuner->audmode == V4L2_TUNER_MODE_MONO) { 1739 r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET, 1740 WL1273_RX_MONO); 1741 if (r < 0) { 1742 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1743 __func__, r); 1744 goto out; 1745 } 1746 radio->stereo = false; 1747 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) { 1748 r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET, 1749 WL1273_RX_STEREO); 1750 if (r < 0) { 1751 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n", 1752 __func__, r); 1753 goto out; 1754 } 1755 radio->stereo = true; 1756 } else { 1757 dev_err(radio->dev, "%s: tuner->audmode: %d\n", 1758 __func__, tuner->audmode); 1759 r = -EINVAL; 1760 goto out; 1761 } 1762 1763 out: 1764 mutex_unlock(&core->lock); 1765 1766 return r; 1767 } 1768 1769 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv, 1770 struct v4l2_frequency *freq) 1771 { 1772 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1773 struct wl1273_core *core = radio->core; 1774 1775 dev_dbg(radio->dev, "%s\n", __func__); 1776 1777 if (mutex_lock_interruptible(&core->lock)) 1778 return -EINTR; 1779 1780 freq->type = V4L2_TUNER_RADIO; 1781 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio)); 1782 1783 mutex_unlock(&core->lock); 1784 1785 return 0; 1786 } 1787 1788 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv, 1789 struct v4l2_frequency *freq) 1790 { 1791 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1792 struct wl1273_core *core = radio->core; 1793 int r; 1794 1795 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency); 1796 1797 if (freq->type != V4L2_TUNER_RADIO) { 1798 dev_dbg(radio->dev, 1799 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type); 1800 return -EINVAL; 1801 } 1802 1803 if (mutex_lock_interruptible(&core->lock)) 1804 return -EINTR; 1805 1806 if (core->mode == WL1273_MODE_RX) { 1807 dev_dbg(radio->dev, "freq: %d\n", freq->frequency); 1808 1809 r = wl1273_fm_set_rx_freq(radio, 1810 WL1273_INV_FREQ(freq->frequency)); 1811 if (r) 1812 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1813 ": set frequency failed with %d\n", r); 1814 } else { 1815 r = wl1273_fm_set_tx_freq(radio, 1816 WL1273_INV_FREQ(freq->frequency)); 1817 if (r) 1818 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1819 ": set frequency failed with %d\n", r); 1820 } 1821 1822 mutex_unlock(&core->lock); 1823 1824 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n"); 1825 return r; 1826 } 1827 1828 #define WL1273_DEFAULT_SEEK_LEVEL 7 1829 1830 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv, 1831 struct v4l2_hw_freq_seek *seek) 1832 { 1833 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1834 struct wl1273_core *core = radio->core; 1835 int r; 1836 1837 dev_dbg(radio->dev, "%s\n", __func__); 1838 1839 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO) 1840 return -EINVAL; 1841 1842 if (mutex_lock_interruptible(&core->lock)) 1843 return -EINTR; 1844 1845 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX); 1846 if (r) 1847 goto out; 1848 1849 r = wl1273_fm_tx_set_spacing(radio, seek->spacing); 1850 if (r) 1851 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1852 1853 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward, 1854 WL1273_DEFAULT_SEEK_LEVEL); 1855 if (r) 1856 dev_warn(radio->dev, "HW seek failed: %d\n", r); 1857 1858 out: 1859 mutex_unlock(&core->lock); 1860 return r; 1861 } 1862 1863 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv, 1864 struct v4l2_modulator *modulator) 1865 { 1866 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1867 struct wl1273_core *core = radio->core; 1868 int r = 0; 1869 1870 dev_dbg(radio->dev, "%s\n", __func__); 1871 1872 if (modulator->index > 0) 1873 return -EINVAL; 1874 1875 if (mutex_lock_interruptible(&core->lock)) 1876 return -EINTR; 1877 1878 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX); 1879 if (r) 1880 goto out; 1881 1882 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS) 1883 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON); 1884 else 1885 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF); 1886 1887 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO) 1888 r = wl1273_fm_write_cmd(core, WL1273_MONO_SET, WL1273_TX_MONO); 1889 else 1890 r = wl1273_fm_write_cmd(core, WL1273_MONO_SET, 1891 WL1273_RX_STEREO); 1892 if (r < 0) 1893 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME 1894 "MONO_SET fails: %d\n", r); 1895 out: 1896 mutex_unlock(&core->lock); 1897 1898 return r; 1899 } 1900 1901 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv, 1902 struct v4l2_modulator *modulator) 1903 { 1904 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1905 struct wl1273_core *core = radio->core; 1906 u16 val; 1907 int r; 1908 1909 dev_dbg(radio->dev, "%s\n", __func__); 1910 1911 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME, 1912 sizeof(modulator->name)); 1913 1914 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW); 1915 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH); 1916 1917 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | 1918 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO; 1919 1920 if (core->mode != WL1273_MODE_TX) 1921 return 0; 1922 1923 if (mutex_lock_interruptible(&core->lock)) 1924 return -EINTR; 1925 1926 r = wl1273_fm_read_reg(core, WL1273_MONO_SET, &val); 1927 if (r) 1928 goto out; 1929 1930 if (val == WL1273_TX_STEREO) 1931 modulator->txsubchans = V4L2_TUNER_SUB_STEREO; 1932 else 1933 modulator->txsubchans = V4L2_TUNER_SUB_MONO; 1934 1935 if (radio->rds_on) 1936 modulator->txsubchans |= V4L2_TUNER_SUB_RDS; 1937 out: 1938 mutex_unlock(&core->lock); 1939 1940 return 0; 1941 } 1942 1943 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv) 1944 { 1945 struct wl1273_device *radio = video_get_drvdata(video_devdata(file)); 1946 struct wl1273_core *core = radio->core; 1947 struct device *dev = radio->dev; 1948 u16 val; 1949 int r; 1950 1951 dev_info(dev, DRIVER_DESC); 1952 1953 if (core->mode == WL1273_MODE_OFF) { 1954 dev_info(dev, "Mode: Off\n"); 1955 return 0; 1956 } 1957 1958 if (core->mode == WL1273_MODE_SUSPENDED) { 1959 dev_info(dev, "Mode: Suspended\n"); 1960 return 0; 1961 } 1962 1963 r = wl1273_fm_read_reg(core, WL1273_ASIC_ID_GET, &val); 1964 if (r) 1965 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__); 1966 else 1967 dev_info(dev, "ASIC_ID: 0x%04x\n", val); 1968 1969 r = wl1273_fm_read_reg(core, WL1273_ASIC_VER_GET, &val); 1970 if (r) 1971 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__); 1972 else 1973 dev_info(dev, "ASIC Version: 0x%04x\n", val); 1974 1975 r = wl1273_fm_read_reg(core, WL1273_FIRM_VER_GET, &val); 1976 if (r) 1977 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__); 1978 else 1979 dev_info(dev, "FW version: %d(0x%04x)\n", val, val); 1980 1981 r = wl1273_fm_read_reg(core, WL1273_BAND_SET, &val); 1982 if (r) 1983 dev_err(dev, "%s: Get BAND fails.\n", __func__); 1984 else 1985 dev_info(dev, "BAND: %d\n", val); 1986 1987 if (core->mode == WL1273_MODE_TX) { 1988 r = wl1273_fm_read_reg(core, WL1273_PUPD_SET, &val); 1989 if (r) 1990 dev_err(dev, "%s: Get PUPD fails.\n", __func__); 1991 else 1992 dev_info(dev, "PUPD: 0x%04x\n", val); 1993 1994 r = wl1273_fm_read_reg(core, WL1273_CHANL_SET, &val); 1995 if (r) 1996 dev_err(dev, "%s: Get CHANL fails.\n", __func__); 1997 else 1998 dev_info(dev, "Tx frequency: %dkHz\n", val*10); 1999 } else if (core->mode == WL1273_MODE_RX) { 2000 int bf = radio->rangelow; 2001 2002 r = wl1273_fm_read_reg(core, WL1273_FREQ_SET, &val); 2003 if (r) 2004 dev_err(dev, "%s: Get FREQ fails.\n", __func__); 2005 else 2006 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50); 2007 2008 r = wl1273_fm_read_reg(core, WL1273_MOST_MODE_SET, &val); 2009 if (r) 2010 dev_err(dev, "%s: Get MOST_MODE fails.\n", 2011 __func__); 2012 else if (val == 0) 2013 dev_info(dev, "MOST_MODE: Stereo according to blend\n"); 2014 else if (val == 1) 2015 dev_info(dev, "MOST_MODE: Force mono output\n"); 2016 else 2017 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val); 2018 2019 r = wl1273_fm_read_reg(core, WL1273_MOST_BLEND_SET, &val); 2020 if (r) 2021 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__); 2022 else if (val == 0) 2023 dev_info(dev, 2024 "MOST_BLEND: Switched blend & hysteresis.\n"); 2025 else if (val == 1) 2026 dev_info(dev, "MOST_BLEND: Soft blend.\n"); 2027 else 2028 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val); 2029 2030 r = wl1273_fm_read_reg(core, WL1273_STEREO_GET, &val); 2031 if (r) 2032 dev_err(dev, "%s: Get STEREO fails.\n", __func__); 2033 else if (val == 0) 2034 dev_info(dev, "STEREO: Not detected\n"); 2035 else if (val == 1) 2036 dev_info(dev, "STEREO: Detected\n"); 2037 else 2038 dev_info(dev, "STEREO: Unexpected value: %d\n", val); 2039 2040 r = wl1273_fm_read_reg(core, WL1273_RSSI_LVL_GET, &val); 2041 if (r) 2042 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__); 2043 else 2044 dev_info(dev, "RX signal strength: %d\n", (s16) val); 2045 2046 r = wl1273_fm_read_reg(core, WL1273_POWER_SET, &val); 2047 if (r) 2048 dev_err(dev, "%s: Get POWER fails.\n", __func__); 2049 else 2050 dev_info(dev, "POWER: 0x%04x\n", val); 2051 2052 r = wl1273_fm_read_reg(core, WL1273_INT_MASK_SET, &val); 2053 if (r) 2054 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__); 2055 else 2056 dev_info(dev, "INT_MASK: 0x%04x\n", val); 2057 2058 r = wl1273_fm_read_reg(core, WL1273_RDS_SYNC_GET, &val); 2059 if (r) 2060 dev_err(dev, "%s: Get RDS_SYNC fails.\n", 2061 __func__); 2062 else if (val == 0) 2063 dev_info(dev, "RDS_SYNC: Not synchronized\n"); 2064 2065 else if (val == 1) 2066 dev_info(dev, "RDS_SYNC: Synchronized\n"); 2067 else 2068 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val); 2069 2070 r = wl1273_fm_read_reg(core, WL1273_I2S_MODE_CONFIG_SET, &val); 2071 if (r) 2072 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n", 2073 __func__); 2074 else 2075 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val); 2076 2077 r = wl1273_fm_read_reg(core, WL1273_VOLUME_SET, &val); 2078 if (r) 2079 dev_err(dev, "%s: Get VOLUME fails.\n", __func__); 2080 else 2081 dev_info(dev, "VOLUME: 0x%04x\n", val); 2082 } 2083 2084 return 0; 2085 } 2086 2087 static void wl1273_vdev_release(struct video_device *dev) 2088 { 2089 } 2090 2091 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = { 2092 .s_ctrl = wl1273_fm_vidioc_s_ctrl, 2093 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl, 2094 }; 2095 2096 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = { 2097 .vidioc_querycap = wl1273_fm_vidioc_querycap, 2098 .vidioc_g_input = wl1273_fm_vidioc_g_input, 2099 .vidioc_s_input = wl1273_fm_vidioc_s_input, 2100 .vidioc_g_audio = wl1273_fm_vidioc_g_audio, 2101 .vidioc_s_audio = wl1273_fm_vidioc_s_audio, 2102 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner, 2103 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner, 2104 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency, 2105 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency, 2106 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek, 2107 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator, 2108 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator, 2109 .vidioc_log_status = wl1273_fm_vidioc_log_status, 2110 }; 2111 2112 static struct video_device wl1273_viddev_template = { 2113 .fops = &wl1273_fops, 2114 .ioctl_ops = &wl1273_ioctl_ops, 2115 .name = WL1273_FM_DRIVER_NAME, 2116 .release = wl1273_vdev_release, 2117 }; 2118 2119 static int wl1273_fm_radio_remove(struct platform_device *pdev) 2120 { 2121 struct wl1273_device *radio = platform_get_drvdata(pdev); 2122 struct wl1273_core *core = radio->core; 2123 2124 dev_info(&pdev->dev, "%s.\n", __func__); 2125 2126 free_irq(core->client->irq, radio); 2127 core->pdata->free_resources(); 2128 2129 v4l2_ctrl_handler_free(&radio->ctrl_handler); 2130 video_unregister_device(&radio->videodev); 2131 v4l2_device_unregister(&radio->v4l2dev); 2132 kfree(radio->buffer); 2133 kfree(radio->write_buf); 2134 kfree(radio); 2135 2136 return 0; 2137 } 2138 2139 static int __devinit wl1273_fm_radio_probe(struct platform_device *pdev) 2140 { 2141 struct wl1273_core **core = pdev->dev.platform_data; 2142 struct wl1273_device *radio; 2143 struct v4l2_ctrl *ctrl; 2144 int r = 0; 2145 2146 pr_debug("%s\n", __func__); 2147 2148 if (!core) { 2149 dev_err(&pdev->dev, "No platform data.\n"); 2150 r = -EINVAL; 2151 goto pdata_err; 2152 } 2153 2154 radio = kzalloc(sizeof(*radio), GFP_KERNEL); 2155 if (!radio) { 2156 r = -ENOMEM; 2157 goto pdata_err; 2158 } 2159 2160 /* RDS buffer allocation */ 2161 radio->buf_size = rds_buf * RDS_BLOCK_SIZE; 2162 radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); 2163 if (!radio->buffer) { 2164 pr_err("Cannot allocate memory for RDS buffer.\n"); 2165 r = -ENOMEM; 2166 goto err_kmalloc; 2167 } 2168 2169 radio->core = *core; 2170 radio->irq_flags = WL1273_IRQ_MASK; 2171 radio->dev = &radio->core->client->dev; 2172 radio->rds_on = false; 2173 radio->core->mode = WL1273_MODE_OFF; 2174 radio->tx_power = 118; 2175 radio->core->audio_mode = WL1273_AUDIO_ANALOG; 2176 radio->band = WL1273_BAND_OTHER; 2177 radio->core->i2s_mode = WL1273_I2S_DEF_MODE; 2178 radio->core->channel_number = 2; 2179 radio->core->volume = WL1273_DEFAULT_VOLUME; 2180 radio->rx_frequency = WL1273_BAND_OTHER_LOW; 2181 radio->tx_frequency = WL1273_BAND_OTHER_HIGH; 2182 radio->rangelow = WL1273_BAND_OTHER_LOW; 2183 radio->rangehigh = WL1273_BAND_OTHER_HIGH; 2184 radio->stereo = true; 2185 radio->bus_type = "I2C"; 2186 2187 radio->core->write = wl1273_fm_write_cmd; 2188 radio->core->set_audio = wl1273_fm_set_audio; 2189 radio->core->set_volume = wl1273_fm_set_volume; 2190 2191 if (radio->core->pdata->request_resources) { 2192 r = radio->core->pdata->request_resources(radio->core->client); 2193 if (r) { 2194 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2195 ": Cannot get platform data\n"); 2196 goto err_resources; 2197 } 2198 2199 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq); 2200 2201 r = request_threaded_irq(radio->core->client->irq, NULL, 2202 wl1273_fm_irq_thread_handler, 2203 IRQF_ONESHOT | IRQF_TRIGGER_FALLING, 2204 "wl1273-fm", radio); 2205 if (r < 0) { 2206 dev_err(radio->dev, WL1273_FM_DRIVER_NAME 2207 ": Unable to register IRQ handler: %d\n", r); 2208 goto err_request_irq; 2209 } 2210 } else { 2211 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ" 2212 " not configured"); 2213 r = -EINVAL; 2214 goto err_resources; 2215 } 2216 2217 init_completion(&radio->busy); 2218 init_waitqueue_head(&radio->read_queue); 2219 2220 radio->write_buf = kmalloc(256, GFP_KERNEL); 2221 if (!radio->write_buf) { 2222 r = -ENOMEM; 2223 goto write_buf_err; 2224 } 2225 2226 radio->dev = &pdev->dev; 2227 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler; 2228 radio->rds_users = 0; 2229 2230 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev); 2231 if (r) { 2232 dev_err(&pdev->dev, "Cannot register v4l2_device.\n"); 2233 goto device_register_err; 2234 } 2235 2236 /* V4L2 configuration */ 2237 memcpy(&radio->videodev, &wl1273_viddev_template, 2238 sizeof(wl1273_viddev_template)); 2239 2240 radio->videodev.v4l2_dev = &radio->v4l2dev; 2241 2242 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6); 2243 2244 /* add in ascending ID order */ 2245 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2246 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1, 2247 WL1273_DEFAULT_VOLUME); 2248 2249 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2250 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); 2251 2252 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops, 2253 V4L2_CID_TUNE_PREEMPHASIS, 2254 V4L2_PREEMPHASIS_75_uS, 0x03, 2255 V4L2_PREEMPHASIS_50_uS); 2256 2257 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2258 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118); 2259 2260 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops, 2261 V4L2_CID_TUNE_ANTENNA_CAPACITOR, 2262 0, 255, 1, 255); 2263 if (ctrl) 2264 ctrl->is_volatile = 1; 2265 2266 if (radio->ctrl_handler.error) { 2267 r = radio->ctrl_handler.error; 2268 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r); 2269 goto handler_init_err; 2270 } 2271 2272 video_set_drvdata(&radio->videodev, radio); 2273 platform_set_drvdata(pdev, radio); 2274 2275 /* register video device */ 2276 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); 2277 if (r) { 2278 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME 2279 ": Could not register video device\n"); 2280 goto handler_init_err; 2281 } 2282 2283 return 0; 2284 2285 handler_init_err: 2286 v4l2_ctrl_handler_free(&radio->ctrl_handler); 2287 v4l2_device_unregister(&radio->v4l2dev); 2288 device_register_err: 2289 kfree(radio->write_buf); 2290 write_buf_err: 2291 free_irq(radio->core->client->irq, radio); 2292 err_request_irq: 2293 radio->core->pdata->free_resources(); 2294 err_resources: 2295 kfree(radio->buffer); 2296 err_kmalloc: 2297 kfree(radio); 2298 pdata_err: 2299 return r; 2300 } 2301 2302 MODULE_ALIAS("platform:wl1273_fm_radio"); 2303 2304 static struct platform_driver wl1273_fm_radio_driver = { 2305 .probe = wl1273_fm_radio_probe, 2306 .remove = __devexit_p(wl1273_fm_radio_remove), 2307 .driver = { 2308 .name = "wl1273_fm_radio", 2309 .owner = THIS_MODULE, 2310 }, 2311 }; 2312 2313 static int __init wl1273_fm_module_init(void) 2314 { 2315 pr_info("%s\n", __func__); 2316 return platform_driver_register(&wl1273_fm_radio_driver); 2317 } 2318 module_init(wl1273_fm_module_init); 2319 2320 static void __exit wl1273_fm_module_exit(void) 2321 { 2322 flush_scheduled_work(); 2323 platform_driver_unregister(&wl1273_fm_radio_driver); 2324 pr_info(DRIVER_DESC ", Exiting.\n"); 2325 } 2326 module_exit(wl1273_fm_module_exit); 2327 2328 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); 2329 MODULE_DESCRIPTION(DRIVER_DESC); 2330 MODULE_LICENSE("GPL"); 2331