1 /* 2 * Realtek RTL2832U SDR driver 3 * 4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 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 along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * GNU Radio plugin "gr-kernel" for device usage will be on: 21 * http://git.linuxtv.org/anttip/gr-kernel.git 22 * 23 */ 24 25 #include "rtl2832_sdr.h" 26 #include "dvb_usb.h" 27 28 #include <media/v4l2-device.h> 29 #include <media/v4l2-ioctl.h> 30 #include <media/v4l2-ctrls.h> 31 #include <media/v4l2-event.h> 32 #include <media/videobuf2-v4l2.h> 33 #include <media/videobuf2-vmalloc.h> 34 35 #include <linux/platform_device.h> 36 #include <linux/jiffies.h> 37 #include <linux/math64.h> 38 #include <linux/regmap.h> 39 40 static bool rtl2832_sdr_emulated_fmt; 41 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); 42 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)"); 43 44 /* Original macro does not contain enough null pointer checks for our need */ 45 #define V4L2_SUBDEV_HAS_OP(sd, o, f) \ 46 ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f) 47 48 #define MAX_BULK_BUFS (10) 49 #define BULK_BUFFER_SIZE (128 * 512) 50 51 static const struct v4l2_frequency_band bands_adc[] = { 52 { 53 .tuner = 0, 54 .type = V4L2_TUNER_ADC, 55 .index = 0, 56 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 57 .rangelow = 300000, 58 .rangehigh = 300000, 59 }, 60 { 61 .tuner = 0, 62 .type = V4L2_TUNER_ADC, 63 .index = 1, 64 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 65 .rangelow = 900001, 66 .rangehigh = 2800000, 67 }, 68 { 69 .tuner = 0, 70 .type = V4L2_TUNER_ADC, 71 .index = 2, 72 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 73 .rangelow = 3200000, 74 .rangehigh = 3200000, 75 }, 76 }; 77 78 static const struct v4l2_frequency_band bands_fm[] = { 79 { 80 .tuner = 1, 81 .type = V4L2_TUNER_RF, 82 .index = 0, 83 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 84 .rangelow = 50000000, 85 .rangehigh = 2000000000, 86 }, 87 }; 88 89 /* stream formats */ 90 struct rtl2832_sdr_format { 91 char *name; 92 u32 pixelformat; 93 u32 buffersize; 94 }; 95 96 static struct rtl2832_sdr_format formats[] = { 97 { 98 .name = "Complex U8", 99 .pixelformat = V4L2_SDR_FMT_CU8, 100 .buffersize = BULK_BUFFER_SIZE, 101 }, { 102 .name = "Complex U16LE (emulated)", 103 .pixelformat = V4L2_SDR_FMT_CU16LE, 104 .buffersize = BULK_BUFFER_SIZE * 2, 105 }, 106 }; 107 108 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 109 110 /* intermediate buffers with raw data from the USB device */ 111 struct rtl2832_sdr_frame_buf { 112 /* common v4l buffer stuff -- must be first */ 113 struct vb2_v4l2_buffer vb; 114 struct list_head list; 115 }; 116 117 struct rtl2832_sdr_dev { 118 #define POWER_ON 0 /* BIT(0) */ 119 #define URB_BUF 1 /* BIT(1) */ 120 unsigned long flags; 121 122 struct platform_device *pdev; 123 struct regmap *regmap; 124 125 struct video_device vdev; 126 struct v4l2_device v4l2_dev; 127 struct v4l2_subdev *v4l2_subdev; 128 129 /* videobuf2 queue and queued buffers list */ 130 struct vb2_queue vb_queue; 131 struct list_head queued_bufs; 132 spinlock_t queued_bufs_lock; /* Protects queued_bufs */ 133 unsigned sequence; /* buffer sequence counter */ 134 135 /* Note if taking both locks v4l2_lock must always be locked first! */ 136 struct mutex v4l2_lock; /* Protects everything else */ 137 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ 138 139 /* Pointer to our usb_device, will be NULL after unplug */ 140 struct usb_device *udev; /* Both mutexes most be hold when setting! */ 141 142 unsigned int vb_full; /* vb is full and packets dropped */ 143 144 struct urb *urb_list[MAX_BULK_BUFS]; 145 int buf_num; 146 unsigned long buf_size; 147 u8 *buf_list[MAX_BULK_BUFS]; 148 dma_addr_t dma_addr[MAX_BULK_BUFS]; 149 int urbs_initialized; 150 int urbs_submitted; 151 152 unsigned int f_adc, f_tuner; 153 u32 pixelformat; 154 u32 buffersize; 155 unsigned int num_formats; 156 157 /* Controls */ 158 struct v4l2_ctrl_handler hdl; 159 struct v4l2_ctrl *bandwidth_auto; 160 struct v4l2_ctrl *bandwidth; 161 162 /* for sample rate calc */ 163 unsigned int sample; 164 unsigned int sample_measured; 165 unsigned long jiffies_next; 166 }; 167 168 /* Private functions */ 169 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf( 170 struct rtl2832_sdr_dev *dev) 171 { 172 unsigned long flags; 173 struct rtl2832_sdr_frame_buf *buf = NULL; 174 175 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 176 if (list_empty(&dev->queued_bufs)) 177 goto leave; 178 179 buf = list_entry(dev->queued_bufs.next, 180 struct rtl2832_sdr_frame_buf, list); 181 list_del(&buf->list); 182 leave: 183 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 184 return buf; 185 } 186 187 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev, 188 void *dst, const u8 *src, unsigned int src_len) 189 { 190 struct platform_device *pdev = dev->pdev; 191 unsigned int dst_len; 192 193 if (dev->pixelformat == V4L2_SDR_FMT_CU8) { 194 /* native stream, no need to convert */ 195 memcpy(dst, src, src_len); 196 dst_len = src_len; 197 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) { 198 /* convert u8 to u16 */ 199 unsigned int i; 200 u16 *u16dst = dst; 201 202 for (i = 0; i < src_len; i++) 203 *u16dst++ = (src[i] << 8) | (src[i] >> 0); 204 dst_len = 2 * src_len; 205 } else { 206 dst_len = 0; 207 } 208 209 /* calculate sample rate and output it in 10 seconds intervals */ 210 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) { 211 #define MSECS 10000UL 212 unsigned int msecs = jiffies_to_msecs(jiffies - 213 dev->jiffies_next + msecs_to_jiffies(MSECS)); 214 unsigned int samples = dev->sample - dev->sample_measured; 215 216 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); 217 dev->sample_measured = dev->sample; 218 dev_dbg(&pdev->dev, 219 "slen=%u samples=%u msecs=%u sample rate=%lu\n", 220 src_len, samples, msecs, samples * 1000UL / msecs); 221 } 222 223 /* total number of I+Q pairs */ 224 dev->sample += src_len / 2; 225 226 return dst_len; 227 } 228 229 /* 230 * This gets called for the bulk stream pipe. This is done in interrupt 231 * time, so it has to be fast, not crash, and not stall. Neat. 232 */ 233 static void rtl2832_sdr_urb_complete(struct urb *urb) 234 { 235 struct rtl2832_sdr_dev *dev = urb->context; 236 struct platform_device *pdev = dev->pdev; 237 struct rtl2832_sdr_frame_buf *fbuf; 238 239 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n", 240 urb->status, urb->actual_length, 241 urb->transfer_buffer_length, urb->error_count); 242 243 switch (urb->status) { 244 case 0: /* success */ 245 case -ETIMEDOUT: /* NAK */ 246 break; 247 case -ECONNRESET: /* kill */ 248 case -ENOENT: 249 case -ESHUTDOWN: 250 return; 251 default: /* error */ 252 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status); 253 break; 254 } 255 256 if (likely(urb->actual_length > 0)) { 257 void *ptr; 258 unsigned int len; 259 /* get free framebuffer */ 260 fbuf = rtl2832_sdr_get_next_fill_buf(dev); 261 if (unlikely(fbuf == NULL)) { 262 dev->vb_full++; 263 dev_notice_ratelimited(&pdev->dev, 264 "videobuf is full, %d packets dropped\n", 265 dev->vb_full); 266 goto skip; 267 } 268 269 /* fill framebuffer */ 270 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0); 271 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer, 272 urb->actual_length); 273 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len); 274 fbuf->vb.vb2_buf.timestamp = ktime_get_ns(); 275 fbuf->vb.sequence = dev->sequence++; 276 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); 277 } 278 skip: 279 usb_submit_urb(urb, GFP_ATOMIC); 280 } 281 282 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev) 283 { 284 struct platform_device *pdev = dev->pdev; 285 int i; 286 287 for (i = dev->urbs_submitted - 1; i >= 0; i--) { 288 dev_dbg(&pdev->dev, "kill urb=%d\n", i); 289 /* stop the URB */ 290 usb_kill_urb(dev->urb_list[i]); 291 } 292 dev->urbs_submitted = 0; 293 294 return 0; 295 } 296 297 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev) 298 { 299 struct platform_device *pdev = dev->pdev; 300 int i, ret; 301 302 for (i = 0; i < dev->urbs_initialized; i++) { 303 dev_dbg(&pdev->dev, "submit urb=%d\n", i); 304 ret = usb_submit_urb(dev->urb_list[i], GFP_KERNEL); 305 if (ret) { 306 dev_err(&pdev->dev, 307 "Could not submit urb no. %d - get them all back\n", 308 i); 309 rtl2832_sdr_kill_urbs(dev); 310 return ret; 311 } 312 dev->urbs_submitted++; 313 } 314 315 return 0; 316 } 317 318 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev) 319 { 320 struct platform_device *pdev = dev->pdev; 321 322 if (test_bit(URB_BUF, &dev->flags)) { 323 while (dev->buf_num) { 324 dev->buf_num--; 325 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num); 326 usb_free_coherent(dev->udev, dev->buf_size, 327 dev->buf_list[dev->buf_num], 328 dev->dma_addr[dev->buf_num]); 329 } 330 } 331 clear_bit(URB_BUF, &dev->flags); 332 333 return 0; 334 } 335 336 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev) 337 { 338 struct platform_device *pdev = dev->pdev; 339 340 dev->buf_num = 0; 341 dev->buf_size = BULK_BUFFER_SIZE; 342 343 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n", 344 MAX_BULK_BUFS * BULK_BUFFER_SIZE); 345 346 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) { 347 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev, 348 BULK_BUFFER_SIZE, GFP_KERNEL, 349 &dev->dma_addr[dev->buf_num]); 350 if (!dev->buf_list[dev->buf_num]) { 351 dev_dbg(&pdev->dev, "alloc buf=%d failed\n", 352 dev->buf_num); 353 rtl2832_sdr_free_stream_bufs(dev); 354 return -ENOMEM; 355 } 356 357 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n", 358 dev->buf_num, dev->buf_list[dev->buf_num], 359 (long long)dev->dma_addr[dev->buf_num]); 360 set_bit(URB_BUF, &dev->flags); 361 } 362 363 return 0; 364 } 365 366 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev) 367 { 368 struct platform_device *pdev = dev->pdev; 369 int i; 370 371 rtl2832_sdr_kill_urbs(dev); 372 373 for (i = dev->urbs_initialized - 1; i >= 0; i--) { 374 if (dev->urb_list[i]) { 375 dev_dbg(&pdev->dev, "free urb=%d\n", i); 376 /* free the URBs */ 377 usb_free_urb(dev->urb_list[i]); 378 } 379 } 380 dev->urbs_initialized = 0; 381 382 return 0; 383 } 384 385 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev) 386 { 387 struct platform_device *pdev = dev->pdev; 388 int i, j; 389 390 /* allocate the URBs */ 391 for (i = 0; i < MAX_BULK_BUFS; i++) { 392 dev_dbg(&pdev->dev, "alloc urb=%d\n", i); 393 dev->urb_list[i] = usb_alloc_urb(0, GFP_KERNEL); 394 if (!dev->urb_list[i]) { 395 for (j = 0; j < i; j++) 396 usb_free_urb(dev->urb_list[j]); 397 return -ENOMEM; 398 } 399 usb_fill_bulk_urb(dev->urb_list[i], 400 dev->udev, 401 usb_rcvbulkpipe(dev->udev, 0x81), 402 dev->buf_list[i], 403 BULK_BUFFER_SIZE, 404 rtl2832_sdr_urb_complete, dev); 405 406 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 407 dev->urb_list[i]->transfer_dma = dev->dma_addr[i]; 408 dev->urbs_initialized++; 409 } 410 411 return 0; 412 } 413 414 /* Must be called with vb_queue_lock hold */ 415 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev) 416 { 417 struct platform_device *pdev = dev->pdev; 418 unsigned long flags; 419 420 dev_dbg(&pdev->dev, "\n"); 421 422 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 423 while (!list_empty(&dev->queued_bufs)) { 424 struct rtl2832_sdr_frame_buf *buf; 425 426 buf = list_entry(dev->queued_bufs.next, 427 struct rtl2832_sdr_frame_buf, list); 428 list_del(&buf->list); 429 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 430 } 431 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 432 } 433 434 static int rtl2832_sdr_querycap(struct file *file, void *fh, 435 struct v4l2_capability *cap) 436 { 437 struct rtl2832_sdr_dev *dev = video_drvdata(file); 438 struct platform_device *pdev = dev->pdev; 439 440 dev_dbg(&pdev->dev, "\n"); 441 442 strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 443 strscpy(cap->card, dev->vdev.name, sizeof(cap->card)); 444 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 445 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 446 V4L2_CAP_READWRITE | V4L2_CAP_TUNER; 447 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 448 return 0; 449 } 450 451 /* Videobuf2 operations */ 452 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, 453 unsigned int *nbuffers, 454 unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) 455 { 456 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 457 struct platform_device *pdev = dev->pdev; 458 459 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers); 460 461 /* Need at least 8 buffers */ 462 if (vq->num_buffers + *nbuffers < 8) 463 *nbuffers = 8 - vq->num_buffers; 464 *nplanes = 1; 465 sizes[0] = PAGE_ALIGN(dev->buffersize); 466 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 467 return 0; 468 } 469 470 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 471 { 472 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 473 474 /* Don't allow queueing new buffers after device disconnection */ 475 if (!dev->udev) 476 return -ENODEV; 477 478 return 0; 479 } 480 481 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) 482 { 483 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 484 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 485 struct rtl2832_sdr_frame_buf *buf = 486 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); 487 unsigned long flags; 488 489 /* Check the device has not disconnected between prep and queuing */ 490 if (!dev->udev) { 491 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 492 return; 493 } 494 495 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 496 list_add_tail(&buf->list, &dev->queued_bufs); 497 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 498 } 499 500 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) 501 { 502 struct platform_device *pdev = dev->pdev; 503 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 504 struct dvb_frontend *fe = pdata->dvb_frontend; 505 int ret; 506 unsigned int f_sr, f_if; 507 u8 buf[4], u8tmp1, u8tmp2; 508 u64 u64tmp; 509 u32 u32tmp; 510 511 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc); 512 513 if (!test_bit(POWER_ON, &dev->flags)) 514 return 0; 515 516 if (dev->f_adc == 0) 517 return 0; 518 519 f_sr = dev->f_adc; 520 521 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2); 522 if (ret) 523 goto err; 524 525 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4); 526 if (ret) 527 goto err; 528 529 /* get IF from tuner */ 530 if (fe->ops.tuner_ops.get_if_frequency) 531 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); 532 else 533 ret = -EINVAL; 534 535 if (ret) 536 goto err; 537 538 /* program IF */ 539 u64tmp = f_if % pdata->clk; 540 u64tmp *= 0x400000; 541 u64tmp = div_u64(u64tmp, pdata->clk); 542 u64tmp = -u64tmp; 543 u32tmp = u64tmp & 0x3fffff; 544 545 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp); 546 547 buf[0] = (u32tmp >> 16) & 0xff; 548 buf[1] = (u32tmp >> 8) & 0xff; 549 buf[2] = (u32tmp >> 0) & 0xff; 550 551 ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3); 552 if (ret) 553 goto err; 554 555 /* BB / IF mode */ 556 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ 557 if (f_if) { 558 u8tmp1 = 0x1a; /* disable Zero-IF */ 559 u8tmp2 = 0x8d; /* enable ADC I */ 560 } else { 561 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ 562 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ 563 } 564 565 ret = regmap_write(dev->regmap, 0x1b1, u8tmp1); 566 if (ret) 567 goto err; 568 569 ret = regmap_write(dev->regmap, 0x008, u8tmp2); 570 if (ret) 571 goto err; 572 573 ret = regmap_write(dev->regmap, 0x006, 0x80); 574 if (ret) 575 goto err; 576 577 /* program sampling rate (resampling down) */ 578 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U); 579 u32tmp <<= 2; 580 buf[0] = (u32tmp >> 24) & 0xff; 581 buf[1] = (u32tmp >> 16) & 0xff; 582 buf[2] = (u32tmp >> 8) & 0xff; 583 buf[3] = (u32tmp >> 0) & 0xff; 584 ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4); 585 if (ret) 586 goto err; 587 588 /* low-pass filter */ 589 ret = regmap_bulk_write(dev->regmap, 0x11c, 590 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 591 20); 592 if (ret) 593 goto err; 594 595 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 596 if (ret) 597 goto err; 598 599 /* mode */ 600 ret = regmap_write(dev->regmap, 0x019, 0x05); 601 if (ret) 602 goto err; 603 604 ret = regmap_bulk_write(dev->regmap, 0x01a, 605 "\x1b\x16\x0d\x06\x01\xff", 6); 606 if (ret) 607 goto err; 608 609 /* FSM */ 610 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3); 611 if (ret) 612 goto err; 613 614 /* PID filter */ 615 ret = regmap_write(dev->regmap, 0x061, 0x60); 616 if (ret) 617 goto err; 618 619 /* used RF tuner based settings */ 620 switch (pdata->tuner) { 621 case RTL2832_SDR_TUNER_E4000: 622 ret = regmap_write(dev->regmap, 0x112, 0x5a); 623 ret = regmap_write(dev->regmap, 0x102, 0x40); 624 ret = regmap_write(dev->regmap, 0x103, 0x5a); 625 ret = regmap_write(dev->regmap, 0x1c7, 0x30); 626 ret = regmap_write(dev->regmap, 0x104, 0xd0); 627 ret = regmap_write(dev->regmap, 0x105, 0xbe); 628 ret = regmap_write(dev->regmap, 0x1c8, 0x18); 629 ret = regmap_write(dev->regmap, 0x106, 0x35); 630 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 631 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 632 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 633 ret = regmap_write(dev->regmap, 0x107, 0x40); 634 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 635 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 636 ret = regmap_write(dev->regmap, 0x108, 0x80); 637 ret = regmap_write(dev->regmap, 0x109, 0x7f); 638 ret = regmap_write(dev->regmap, 0x10a, 0x80); 639 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 640 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 641 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 642 ret = regmap_write(dev->regmap, 0x011, 0xd4); 643 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 644 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 645 ret = regmap_write(dev->regmap, 0x1db, 0x00); 646 ret = regmap_write(dev->regmap, 0x1dd, 0x14); 647 ret = regmap_write(dev->regmap, 0x1de, 0xec); 648 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 649 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 650 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 651 ret = regmap_write(dev->regmap, 0x00d, 0x83); 652 ret = regmap_write(dev->regmap, 0x010, 0x49); 653 ret = regmap_write(dev->regmap, 0x00d, 0x87); 654 ret = regmap_write(dev->regmap, 0x00d, 0x85); 655 ret = regmap_write(dev->regmap, 0x013, 0x02); 656 break; 657 case RTL2832_SDR_TUNER_FC0012: 658 case RTL2832_SDR_TUNER_FC0013: 659 ret = regmap_write(dev->regmap, 0x112, 0x5a); 660 ret = regmap_write(dev->regmap, 0x102, 0x40); 661 ret = regmap_write(dev->regmap, 0x103, 0x5a); 662 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 663 ret = regmap_write(dev->regmap, 0x104, 0xcc); 664 ret = regmap_write(dev->regmap, 0x105, 0xbe); 665 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 666 ret = regmap_write(dev->regmap, 0x106, 0x35); 667 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 668 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 669 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 670 ret = regmap_write(dev->regmap, 0x107, 0x40); 671 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 672 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 673 ret = regmap_write(dev->regmap, 0x108, 0x80); 674 ret = regmap_write(dev->regmap, 0x109, 0x7f); 675 ret = regmap_write(dev->regmap, 0x10a, 0x80); 676 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 677 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 678 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 679 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2); 680 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 681 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 682 ret = regmap_write(dev->regmap, 0x1db, 0x00); 683 ret = regmap_write(dev->regmap, 0x1dd, 0x11); 684 ret = regmap_write(dev->regmap, 0x1de, 0xef); 685 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 686 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 687 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 688 break; 689 case RTL2832_SDR_TUNER_R820T: 690 case RTL2832_SDR_TUNER_R828D: 691 ret = regmap_write(dev->regmap, 0x112, 0x5a); 692 ret = regmap_write(dev->regmap, 0x102, 0x40); 693 ret = regmap_write(dev->regmap, 0x115, 0x01); 694 ret = regmap_write(dev->regmap, 0x103, 0x80); 695 ret = regmap_write(dev->regmap, 0x1c7, 0x24); 696 ret = regmap_write(dev->regmap, 0x104, 0xcc); 697 ret = regmap_write(dev->regmap, 0x105, 0xbe); 698 ret = regmap_write(dev->regmap, 0x1c8, 0x14); 699 ret = regmap_write(dev->regmap, 0x106, 0x35); 700 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 701 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 702 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 703 ret = regmap_write(dev->regmap, 0x107, 0x40); 704 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 705 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 706 ret = regmap_write(dev->regmap, 0x108, 0x80); 707 ret = regmap_write(dev->regmap, 0x109, 0x7f); 708 ret = regmap_write(dev->regmap, 0x10a, 0x80); 709 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 710 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 711 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 712 ret = regmap_write(dev->regmap, 0x011, 0xf4); 713 break; 714 case RTL2832_SDR_TUNER_FC2580: 715 ret = regmap_write(dev->regmap, 0x112, 0x39); 716 ret = regmap_write(dev->regmap, 0x102, 0x40); 717 ret = regmap_write(dev->regmap, 0x103, 0x5a); 718 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 719 ret = regmap_write(dev->regmap, 0x104, 0xcc); 720 ret = regmap_write(dev->regmap, 0x105, 0xbe); 721 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 722 ret = regmap_write(dev->regmap, 0x106, 0x35); 723 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 724 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 725 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 726 ret = regmap_write(dev->regmap, 0x107, 0x40); 727 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 728 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 729 ret = regmap_write(dev->regmap, 0x108, 0x80); 730 ret = regmap_write(dev->regmap, 0x109, 0x7f); 731 ret = regmap_write(dev->regmap, 0x10a, 0x9c); 732 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 733 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 734 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 735 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2); 736 break; 737 default: 738 dev_notice(&pdev->dev, "Unsupported tuner\n"); 739 } 740 741 /* software reset */ 742 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04); 743 if (ret) 744 goto err; 745 746 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00); 747 if (ret) 748 goto err; 749 err: 750 return ret; 751 }; 752 753 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) 754 { 755 struct platform_device *pdev = dev->pdev; 756 int ret; 757 758 dev_dbg(&pdev->dev, "\n"); 759 760 /* PID filter */ 761 ret = regmap_write(dev->regmap, 0x061, 0xe0); 762 if (ret) 763 goto err; 764 765 /* mode */ 766 ret = regmap_write(dev->regmap, 0x019, 0x20); 767 if (ret) 768 goto err; 769 770 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 771 if (ret) 772 goto err; 773 774 /* FSM */ 775 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3); 776 if (ret) 777 goto err; 778 779 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2); 780 if (ret) 781 goto err; 782 783 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4); 784 if (ret) 785 goto err; 786 err: 787 return; 788 }; 789 790 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) 791 { 792 struct platform_device *pdev = dev->pdev; 793 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 794 struct dvb_frontend *fe = pdata->dvb_frontend; 795 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 796 struct v4l2_ctrl *bandwidth_auto; 797 struct v4l2_ctrl *bandwidth; 798 799 /* 800 * tuner RF (Hz) 801 */ 802 if (dev->f_tuner == 0) 803 return 0; 804 805 /* 806 * bandwidth (Hz) 807 */ 808 bandwidth_auto = v4l2_ctrl_find(&dev->hdl, 809 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 810 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 811 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 812 c->bandwidth_hz = dev->f_adc; 813 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 814 } else { 815 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); 816 } 817 818 c->frequency = dev->f_tuner; 819 c->delivery_system = SYS_DVBT; 820 821 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n", 822 c->frequency, c->bandwidth_hz); 823 824 if (!test_bit(POWER_ON, &dev->flags)) 825 return 0; 826 827 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 828 if (fe->ops.tuner_ops.set_params) 829 fe->ops.tuner_ops.set_params(fe); 830 } 831 832 return 0; 833 }; 834 835 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) 836 { 837 struct platform_device *pdev = dev->pdev; 838 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 839 struct dvb_frontend *fe = pdata->dvb_frontend; 840 841 dev_dbg(&pdev->dev, "\n"); 842 843 if (fe->ops.tuner_ops.init) 844 fe->ops.tuner_ops.init(fe); 845 846 return 0; 847 }; 848 849 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) 850 { 851 struct platform_device *pdev = dev->pdev; 852 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 853 struct dvb_frontend *fe = pdata->dvb_frontend; 854 855 dev_dbg(&pdev->dev, "\n"); 856 857 if (fe->ops.tuner_ops.sleep) 858 fe->ops.tuner_ops.sleep(fe); 859 860 return; 861 }; 862 863 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 864 { 865 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 866 struct platform_device *pdev = dev->pdev; 867 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 868 struct dvb_usb_device *d = pdata->dvb_usb_device; 869 int ret; 870 871 dev_dbg(&pdev->dev, "\n"); 872 873 if (!dev->udev) 874 return -ENODEV; 875 876 if (mutex_lock_interruptible(&dev->v4l2_lock)) 877 return -ERESTARTSYS; 878 879 if (d->props->power_ctrl) 880 d->props->power_ctrl(d, 1); 881 882 /* enable ADC */ 883 if (d->props->frontend_ctrl) 884 d->props->frontend_ctrl(pdata->dvb_frontend, 1); 885 886 set_bit(POWER_ON, &dev->flags); 887 888 /* wake-up tuner */ 889 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 890 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); 891 else 892 ret = rtl2832_sdr_set_tuner(dev); 893 if (ret) 894 goto err; 895 896 ret = rtl2832_sdr_set_tuner_freq(dev); 897 if (ret) 898 goto err; 899 900 ret = rtl2832_sdr_set_adc(dev); 901 if (ret) 902 goto err; 903 904 ret = rtl2832_sdr_alloc_stream_bufs(dev); 905 if (ret) 906 goto err; 907 908 ret = rtl2832_sdr_alloc_urbs(dev); 909 if (ret) 910 goto err; 911 912 dev->sequence = 0; 913 914 ret = rtl2832_sdr_submit_urbs(dev); 915 if (ret) 916 goto err; 917 918 err: 919 mutex_unlock(&dev->v4l2_lock); 920 921 return ret; 922 } 923 924 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 925 { 926 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 927 struct platform_device *pdev = dev->pdev; 928 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 929 struct dvb_usb_device *d = pdata->dvb_usb_device; 930 931 dev_dbg(&pdev->dev, "\n"); 932 933 mutex_lock(&dev->v4l2_lock); 934 935 rtl2832_sdr_kill_urbs(dev); 936 rtl2832_sdr_free_urbs(dev); 937 rtl2832_sdr_free_stream_bufs(dev); 938 rtl2832_sdr_cleanup_queued_bufs(dev); 939 rtl2832_sdr_unset_adc(dev); 940 941 /* sleep tuner */ 942 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 943 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); 944 else 945 rtl2832_sdr_unset_tuner(dev); 946 947 clear_bit(POWER_ON, &dev->flags); 948 949 /* disable ADC */ 950 if (d->props->frontend_ctrl) 951 d->props->frontend_ctrl(pdata->dvb_frontend, 0); 952 953 if (d->props->power_ctrl) 954 d->props->power_ctrl(d, 0); 955 956 mutex_unlock(&dev->v4l2_lock); 957 } 958 959 static const struct vb2_ops rtl2832_sdr_vb2_ops = { 960 .queue_setup = rtl2832_sdr_queue_setup, 961 .buf_prepare = rtl2832_sdr_buf_prepare, 962 .buf_queue = rtl2832_sdr_buf_queue, 963 .start_streaming = rtl2832_sdr_start_streaming, 964 .stop_streaming = rtl2832_sdr_stop_streaming, 965 .wait_prepare = vb2_ops_wait_prepare, 966 .wait_finish = vb2_ops_wait_finish, 967 }; 968 969 static int rtl2832_sdr_g_tuner(struct file *file, void *priv, 970 struct v4l2_tuner *v) 971 { 972 struct rtl2832_sdr_dev *dev = video_drvdata(file); 973 struct platform_device *pdev = dev->pdev; 974 int ret; 975 976 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type); 977 978 if (v->index == 0) { 979 strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); 980 v->type = V4L2_TUNER_ADC; 981 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 982 v->rangelow = 300000; 983 v->rangehigh = 3200000; 984 ret = 0; 985 } else if (v->index == 1 && 986 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { 987 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); 988 } else if (v->index == 1) { 989 strscpy(v->name, "RF: <unknown>", sizeof(v->name)); 990 v->type = V4L2_TUNER_RF; 991 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 992 v->rangelow = 50000000; 993 v->rangehigh = 2000000000; 994 ret = 0; 995 } else { 996 ret = -EINVAL; 997 } 998 return ret; 999 } 1000 1001 static int rtl2832_sdr_s_tuner(struct file *file, void *priv, 1002 const struct v4l2_tuner *v) 1003 { 1004 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1005 struct platform_device *pdev = dev->pdev; 1006 int ret; 1007 1008 dev_dbg(&pdev->dev, "\n"); 1009 1010 if (v->index == 0) { 1011 ret = 0; 1012 } else if (v->index == 1 && 1013 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { 1014 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); 1015 } else if (v->index == 1) { 1016 ret = 0; 1017 } else { 1018 ret = -EINVAL; 1019 } 1020 return ret; 1021 } 1022 1023 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, 1024 struct v4l2_frequency_band *band) 1025 { 1026 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1027 struct platform_device *pdev = dev->pdev; 1028 int ret; 1029 1030 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n", 1031 band->tuner, band->type, band->index); 1032 1033 if (band->tuner == 0) { 1034 if (band->index >= ARRAY_SIZE(bands_adc)) 1035 return -EINVAL; 1036 1037 *band = bands_adc[band->index]; 1038 ret = 0; 1039 } else if (band->tuner == 1 && 1040 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { 1041 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); 1042 } else if (band->tuner == 1) { 1043 if (band->index >= ARRAY_SIZE(bands_fm)) 1044 return -EINVAL; 1045 1046 *band = bands_fm[band->index]; 1047 ret = 0; 1048 } else { 1049 ret = -EINVAL; 1050 } 1051 return ret; 1052 } 1053 1054 static int rtl2832_sdr_g_frequency(struct file *file, void *priv, 1055 struct v4l2_frequency *f) 1056 { 1057 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1058 struct platform_device *pdev = dev->pdev; 1059 int ret; 1060 1061 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1062 1063 if (f->tuner == 0) { 1064 f->frequency = dev->f_adc; 1065 f->type = V4L2_TUNER_ADC; 1066 ret = 0; 1067 } else if (f->tuner == 1 && 1068 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { 1069 f->type = V4L2_TUNER_RF; 1070 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); 1071 } else if (f->tuner == 1) { 1072 f->frequency = dev->f_tuner; 1073 f->type = V4L2_TUNER_RF; 1074 ret = 0; 1075 } else { 1076 ret = -EINVAL; 1077 } 1078 return ret; 1079 } 1080 1081 static int rtl2832_sdr_s_frequency(struct file *file, void *priv, 1082 const struct v4l2_frequency *f) 1083 { 1084 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1085 struct platform_device *pdev = dev->pdev; 1086 int ret, band; 1087 1088 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n", 1089 f->tuner, f->type, f->frequency); 1090 1091 /* ADC band midpoints */ 1092 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) 1093 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) 1094 1095 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { 1096 if (f->frequency < BAND_ADC_0) 1097 band = 0; 1098 else if (f->frequency < BAND_ADC_1) 1099 band = 1; 1100 else 1101 band = 2; 1102 1103 dev->f_adc = clamp_t(unsigned int, f->frequency, 1104 bands_adc[band].rangelow, 1105 bands_adc[band].rangehigh); 1106 1107 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc); 1108 ret = rtl2832_sdr_set_adc(dev); 1109 } else if (f->tuner == 1 && 1110 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 1111 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); 1112 } else if (f->tuner == 1) { 1113 dev->f_tuner = clamp_t(unsigned int, f->frequency, 1114 bands_fm[0].rangelow, 1115 bands_fm[0].rangehigh); 1116 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency); 1117 1118 ret = rtl2832_sdr_set_tuner_freq(dev); 1119 } else { 1120 ret = -EINVAL; 1121 } 1122 return ret; 1123 } 1124 1125 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, 1126 struct v4l2_fmtdesc *f) 1127 { 1128 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1129 struct platform_device *pdev = dev->pdev; 1130 1131 dev_dbg(&pdev->dev, "\n"); 1132 1133 if (f->index >= dev->num_formats) 1134 return -EINVAL; 1135 1136 strscpy(f->description, formats[f->index].name, sizeof(f->description)); 1137 f->pixelformat = formats[f->index].pixelformat; 1138 1139 return 0; 1140 } 1141 1142 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, 1143 struct v4l2_format *f) 1144 { 1145 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1146 struct platform_device *pdev = dev->pdev; 1147 1148 dev_dbg(&pdev->dev, "\n"); 1149 1150 f->fmt.sdr.pixelformat = dev->pixelformat; 1151 f->fmt.sdr.buffersize = dev->buffersize; 1152 1153 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1154 1155 return 0; 1156 } 1157 1158 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, 1159 struct v4l2_format *f) 1160 { 1161 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1162 struct platform_device *pdev = dev->pdev; 1163 struct vb2_queue *q = &dev->vb_queue; 1164 int i; 1165 1166 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1167 (char *)&f->fmt.sdr.pixelformat); 1168 1169 if (vb2_is_busy(q)) 1170 return -EBUSY; 1171 1172 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1173 for (i = 0; i < dev->num_formats; i++) { 1174 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1175 dev->pixelformat = formats[i].pixelformat; 1176 dev->buffersize = formats[i].buffersize; 1177 f->fmt.sdr.buffersize = formats[i].buffersize; 1178 return 0; 1179 } 1180 } 1181 1182 dev->pixelformat = formats[0].pixelformat; 1183 dev->buffersize = formats[0].buffersize; 1184 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1185 f->fmt.sdr.buffersize = formats[0].buffersize; 1186 1187 return 0; 1188 } 1189 1190 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, 1191 struct v4l2_format *f) 1192 { 1193 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1194 struct platform_device *pdev = dev->pdev; 1195 int i; 1196 1197 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1198 (char *)&f->fmt.sdr.pixelformat); 1199 1200 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1201 for (i = 0; i < dev->num_formats; i++) { 1202 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1203 f->fmt.sdr.buffersize = formats[i].buffersize; 1204 return 0; 1205 } 1206 } 1207 1208 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1209 f->fmt.sdr.buffersize = formats[0].buffersize; 1210 1211 return 0; 1212 } 1213 1214 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { 1215 .vidioc_querycap = rtl2832_sdr_querycap, 1216 1217 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, 1218 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, 1219 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, 1220 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, 1221 1222 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1223 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1224 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1225 .vidioc_querybuf = vb2_ioctl_querybuf, 1226 .vidioc_qbuf = vb2_ioctl_qbuf, 1227 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1228 1229 .vidioc_streamon = vb2_ioctl_streamon, 1230 .vidioc_streamoff = vb2_ioctl_streamoff, 1231 1232 .vidioc_g_tuner = rtl2832_sdr_g_tuner, 1233 .vidioc_s_tuner = rtl2832_sdr_s_tuner, 1234 1235 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, 1236 .vidioc_g_frequency = rtl2832_sdr_g_frequency, 1237 .vidioc_s_frequency = rtl2832_sdr_s_frequency, 1238 1239 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1240 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1241 .vidioc_log_status = v4l2_ctrl_log_status, 1242 }; 1243 1244 static const struct v4l2_file_operations rtl2832_sdr_fops = { 1245 .owner = THIS_MODULE, 1246 .open = v4l2_fh_open, 1247 .release = vb2_fop_release, 1248 .read = vb2_fop_read, 1249 .poll = vb2_fop_poll, 1250 .mmap = vb2_fop_mmap, 1251 .unlocked_ioctl = video_ioctl2, 1252 }; 1253 1254 static struct video_device rtl2832_sdr_template = { 1255 .name = "Realtek RTL2832 SDR", 1256 .release = video_device_release_empty, 1257 .fops = &rtl2832_sdr_fops, 1258 .ioctl_ops = &rtl2832_sdr_ioctl_ops, 1259 }; 1260 1261 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) 1262 { 1263 struct rtl2832_sdr_dev *dev = 1264 container_of(ctrl->handler, struct rtl2832_sdr_dev, 1265 hdl); 1266 struct platform_device *pdev = dev->pdev; 1267 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1268 struct dvb_frontend *fe = pdata->dvb_frontend; 1269 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1270 int ret; 1271 1272 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", 1273 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, 1274 ctrl->step); 1275 1276 switch (ctrl->id) { 1277 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: 1278 case V4L2_CID_RF_TUNER_BANDWIDTH: 1279 /* TODO: these controls should be moved to tuner drivers */ 1280 if (dev->bandwidth_auto->val) { 1281 /* Round towards the closest legal value */ 1282 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2); 1283 u32 offset; 1284 1285 val = clamp_t(s32, val, dev->bandwidth->minimum, 1286 dev->bandwidth->maximum); 1287 offset = val - dev->bandwidth->minimum; 1288 offset = dev->bandwidth->step * 1289 div_u64(offset, dev->bandwidth->step); 1290 dev->bandwidth->val = dev->bandwidth->minimum + offset; 1291 } 1292 c->bandwidth_hz = dev->bandwidth->val; 1293 1294 if (!test_bit(POWER_ON, &dev->flags)) 1295 return 0; 1296 1297 if (fe->ops.tuner_ops.set_params) 1298 ret = fe->ops.tuner_ops.set_params(fe); 1299 else 1300 ret = 0; 1301 break; 1302 default: 1303 ret = -EINVAL; 1304 } 1305 1306 return ret; 1307 } 1308 1309 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { 1310 .s_ctrl = rtl2832_sdr_s_ctrl, 1311 }; 1312 1313 static void rtl2832_sdr_video_release(struct v4l2_device *v) 1314 { 1315 struct rtl2832_sdr_dev *dev = 1316 container_of(v, struct rtl2832_sdr_dev, v4l2_dev); 1317 struct platform_device *pdev = dev->pdev; 1318 1319 dev_dbg(&pdev->dev, "\n"); 1320 1321 v4l2_ctrl_handler_free(&dev->hdl); 1322 v4l2_device_unregister(&dev->v4l2_dev); 1323 kfree(dev); 1324 } 1325 1326 /* Platform driver interface */ 1327 static int rtl2832_sdr_probe(struct platform_device *pdev) 1328 { 1329 struct rtl2832_sdr_dev *dev; 1330 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1331 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; 1332 struct v4l2_subdev *subdev; 1333 int ret; 1334 1335 dev_dbg(&pdev->dev, "\n"); 1336 1337 if (!pdata) { 1338 dev_err(&pdev->dev, "Cannot proceed without platform data\n"); 1339 ret = -EINVAL; 1340 goto err; 1341 } 1342 if (!pdev->dev.parent->driver) { 1343 dev_dbg(&pdev->dev, "No parent device\n"); 1344 ret = -EINVAL; 1345 goto err; 1346 } 1347 /* try to refcount host drv since we are the consumer */ 1348 if (!try_module_get(pdev->dev.parent->driver->owner)) { 1349 dev_err(&pdev->dev, "Refcount fail"); 1350 ret = -EINVAL; 1351 goto err; 1352 } 1353 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1354 if (dev == NULL) { 1355 ret = -ENOMEM; 1356 goto err_module_put; 1357 } 1358 1359 /* setup the state */ 1360 subdev = pdata->v4l2_subdev; 1361 dev->v4l2_subdev = pdata->v4l2_subdev; 1362 dev->pdev = pdev; 1363 dev->regmap = pdata->regmap; 1364 dev->udev = pdata->dvb_usb_device->udev; 1365 dev->f_adc = bands_adc[0].rangelow; 1366 dev->f_tuner = bands_fm[0].rangelow; 1367 dev->pixelformat = formats[0].pixelformat; 1368 dev->buffersize = formats[0].buffersize; 1369 dev->num_formats = NUM_FORMATS; 1370 if (!rtl2832_sdr_emulated_fmt) 1371 dev->num_formats -= 1; 1372 1373 mutex_init(&dev->v4l2_lock); 1374 mutex_init(&dev->vb_queue_lock); 1375 spin_lock_init(&dev->queued_bufs_lock); 1376 INIT_LIST_HEAD(&dev->queued_bufs); 1377 1378 /* Init videobuf2 queue structure */ 1379 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1380 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1381 dev->vb_queue.drv_priv = dev; 1382 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); 1383 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops; 1384 dev->vb_queue.mem_ops = &vb2_vmalloc_memops; 1385 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1386 ret = vb2_queue_init(&dev->vb_queue); 1387 if (ret) { 1388 dev_err(&pdev->dev, "Could not initialize vb2 queue\n"); 1389 goto err_kfree; 1390 } 1391 1392 /* Register controls */ 1393 switch (pdata->tuner) { 1394 case RTL2832_SDR_TUNER_E4000: 1395 v4l2_ctrl_handler_init(&dev->hdl, 9); 1396 if (subdev) 1397 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, 1398 NULL, true); 1399 break; 1400 case RTL2832_SDR_TUNER_R820T: 1401 case RTL2832_SDR_TUNER_R828D: 1402 v4l2_ctrl_handler_init(&dev->hdl, 2); 1403 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1404 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1405 0, 1, 1, 1); 1406 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1407 V4L2_CID_RF_TUNER_BANDWIDTH, 1408 0, 8000000, 100000, 0); 1409 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1410 break; 1411 case RTL2832_SDR_TUNER_FC0012: 1412 case RTL2832_SDR_TUNER_FC0013: 1413 v4l2_ctrl_handler_init(&dev->hdl, 2); 1414 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1415 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1416 0, 1, 1, 1); 1417 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1418 V4L2_CID_RF_TUNER_BANDWIDTH, 1419 6000000, 8000000, 1000000, 1420 6000000); 1421 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1422 break; 1423 case RTL2832_SDR_TUNER_FC2580: 1424 v4l2_ctrl_handler_init(&dev->hdl, 2); 1425 if (subdev) 1426 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, 1427 NULL, true); 1428 break; 1429 default: 1430 v4l2_ctrl_handler_init(&dev->hdl, 0); 1431 dev_err(&pdev->dev, "Unsupported tuner\n"); 1432 goto err_v4l2_ctrl_handler_free; 1433 } 1434 if (dev->hdl.error) { 1435 ret = dev->hdl.error; 1436 dev_err(&pdev->dev, "Could not initialize controls\n"); 1437 goto err_v4l2_ctrl_handler_free; 1438 } 1439 1440 /* Init video_device structure */ 1441 dev->vdev = rtl2832_sdr_template; 1442 dev->vdev.queue = &dev->vb_queue; 1443 dev->vdev.queue->lock = &dev->vb_queue_lock; 1444 video_set_drvdata(&dev->vdev, dev); 1445 1446 /* Register the v4l2_device structure */ 1447 dev->v4l2_dev.release = rtl2832_sdr_video_release; 1448 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 1449 if (ret) { 1450 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret); 1451 goto err_v4l2_ctrl_handler_free; 1452 } 1453 1454 dev->v4l2_dev.ctrl_handler = &dev->hdl; 1455 dev->vdev.v4l2_dev = &dev->v4l2_dev; 1456 dev->vdev.lock = &dev->v4l2_lock; 1457 dev->vdev.vfl_dir = VFL_DIR_RX; 1458 1459 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1); 1460 if (ret) { 1461 dev_err(&pdev->dev, "Failed to register as video device %d\n", 1462 ret); 1463 goto err_v4l2_device_unregister; 1464 } 1465 dev_info(&pdev->dev, "Registered as %s\n", 1466 video_device_node_name(&dev->vdev)); 1467 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n"); 1468 dev_notice(&pdev->dev, 1469 "SDR API is still slightly experimental and functionality changes may follow\n"); 1470 platform_set_drvdata(pdev, dev); 1471 return 0; 1472 err_v4l2_device_unregister: 1473 v4l2_device_unregister(&dev->v4l2_dev); 1474 err_v4l2_ctrl_handler_free: 1475 v4l2_ctrl_handler_free(&dev->hdl); 1476 err_kfree: 1477 kfree(dev); 1478 err_module_put: 1479 module_put(pdev->dev.parent->driver->owner); 1480 err: 1481 return ret; 1482 } 1483 1484 static int rtl2832_sdr_remove(struct platform_device *pdev) 1485 { 1486 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); 1487 1488 dev_dbg(&pdev->dev, "\n"); 1489 1490 mutex_lock(&dev->vb_queue_lock); 1491 mutex_lock(&dev->v4l2_lock); 1492 /* No need to keep the urbs around after disconnection */ 1493 dev->udev = NULL; 1494 v4l2_device_disconnect(&dev->v4l2_dev); 1495 video_unregister_device(&dev->vdev); 1496 mutex_unlock(&dev->v4l2_lock); 1497 mutex_unlock(&dev->vb_queue_lock); 1498 v4l2_device_put(&dev->v4l2_dev); 1499 module_put(pdev->dev.parent->driver->owner); 1500 1501 return 0; 1502 } 1503 1504 static struct platform_driver rtl2832_sdr_driver = { 1505 .driver = { 1506 .name = "rtl2832_sdr", 1507 }, 1508 .probe = rtl2832_sdr_probe, 1509 .remove = rtl2832_sdr_remove, 1510 }; 1511 module_platform_driver(rtl2832_sdr_driver); 1512 1513 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1514 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1515 MODULE_LICENSE("GPL"); 1516