1 /* 2 * Mirics MSi2500 driver 3 * Mirics MSi3101 SDR Dongle driver 4 * 5 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * That driver is somehow based of pwc driver: 18 * (C) 1999-2004 Nemosoft Unv. 19 * (C) 2004-2006 Luc Saillard (luc@saillard.org) 20 * (C) 2011 Hans de Goede <hdegoede@redhat.com> 21 */ 22 23 #include <linux/module.h> 24 #include <linux/slab.h> 25 #include <asm/div64.h> 26 #include <media/v4l2-device.h> 27 #include <media/v4l2-ioctl.h> 28 #include <media/v4l2-ctrls.h> 29 #include <media/v4l2-event.h> 30 #include <linux/usb.h> 31 #include <media/videobuf2-v4l2.h> 32 #include <media/videobuf2-vmalloc.h> 33 #include <linux/spi/spi.h> 34 35 static bool msi2500_emulated_fmt; 36 module_param_named(emulated_formats, msi2500_emulated_fmt, bool, 0644); 37 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)"); 38 39 /* 40 * iConfiguration 0 41 * bInterfaceNumber 0 42 * bAlternateSetting 1 43 * bNumEndpoints 1 44 * bEndpointAddress 0x81 EP 1 IN 45 * bmAttributes 1 46 * Transfer Type Isochronous 47 * wMaxPacketSize 0x1400 3x 1024 bytes 48 * bInterval 1 49 */ 50 #define MAX_ISO_BUFS (8) 51 #define ISO_FRAMES_PER_DESC (8) 52 #define ISO_MAX_FRAME_SIZE (3 * 1024) 53 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) 54 #define MAX_ISOC_ERRORS 20 55 56 /* 57 * TODO: These formats should be moved to V4L2 API. Formats are currently 58 * disabled from formats[] table, not visible to userspace. 59 */ 60 /* signed 12-bit */ 61 #define MSI2500_PIX_FMT_SDR_S12 v4l2_fourcc('D', 'S', '1', '2') 62 /* Mirics MSi2500 format 384 */ 63 #define MSI2500_PIX_FMT_SDR_MSI2500_384 v4l2_fourcc('M', '3', '8', '4') 64 65 static const struct v4l2_frequency_band bands[] = { 66 { 67 .tuner = 0, 68 .type = V4L2_TUNER_ADC, 69 .index = 0, 70 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 71 .rangelow = 1200000, 72 .rangehigh = 15000000, 73 }, 74 }; 75 76 /* stream formats */ 77 struct msi2500_format { 78 char *name; 79 u32 pixelformat; 80 u32 buffersize; 81 }; 82 83 /* format descriptions for capture and preview */ 84 static struct msi2500_format formats[] = { 85 { 86 .name = "Complex S8", 87 .pixelformat = V4L2_SDR_FMT_CS8, 88 .buffersize = 3 * 1008, 89 #if 0 90 }, { 91 .name = "10+2-bit signed", 92 .pixelformat = MSI2500_PIX_FMT_SDR_MSI2500_384, 93 }, { 94 .name = "12-bit signed", 95 .pixelformat = MSI2500_PIX_FMT_SDR_S12, 96 #endif 97 }, { 98 .name = "Complex S14LE", 99 .pixelformat = V4L2_SDR_FMT_CS14LE, 100 .buffersize = 3 * 1008, 101 }, { 102 .name = "Complex U8 (emulated)", 103 .pixelformat = V4L2_SDR_FMT_CU8, 104 .buffersize = 3 * 1008, 105 }, { 106 .name = "Complex U16LE (emulated)", 107 .pixelformat = V4L2_SDR_FMT_CU16LE, 108 .buffersize = 3 * 1008, 109 }, 110 }; 111 112 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 113 114 /* intermediate buffers with raw data from the USB device */ 115 struct msi2500_frame_buf { 116 /* common v4l buffer stuff -- must be first */ 117 struct vb2_v4l2_buffer vb; 118 struct list_head list; 119 }; 120 121 struct msi2500_dev { 122 struct device *dev; 123 struct video_device vdev; 124 struct v4l2_device v4l2_dev; 125 struct v4l2_subdev *v4l2_subdev; 126 struct spi_master *master; 127 128 /* videobuf2 queue and queued buffers list */ 129 struct vb2_queue vb_queue; 130 struct list_head queued_bufs; 131 spinlock_t queued_bufs_lock; /* Protects queued_bufs */ 132 133 /* Note if taking both locks v4l2_lock must always be locked first! */ 134 struct mutex v4l2_lock; /* Protects everything else */ 135 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ 136 137 /* Pointer to our usb_device, will be NULL after unplug */ 138 struct usb_device *udev; /* Both mutexes most be hold when setting! */ 139 140 unsigned int f_adc; 141 u32 pixelformat; 142 u32 buffersize; 143 unsigned int num_formats; 144 145 unsigned int isoc_errors; /* number of contiguous ISOC errors */ 146 unsigned int vb_full; /* vb is full and packets dropped */ 147 148 struct urb *urbs[MAX_ISO_BUFS]; 149 150 /* Controls */ 151 struct v4l2_ctrl_handler hdl; 152 153 u32 next_sample; /* for track lost packets */ 154 u32 sample; /* for sample rate calc */ 155 unsigned long jiffies_next; 156 }; 157 158 /* Private functions */ 159 static struct msi2500_frame_buf *msi2500_get_next_fill_buf( 160 struct msi2500_dev *dev) 161 { 162 unsigned long flags; 163 struct msi2500_frame_buf *buf = NULL; 164 165 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 166 if (list_empty(&dev->queued_bufs)) 167 goto leave; 168 169 buf = list_entry(dev->queued_bufs.next, struct msi2500_frame_buf, list); 170 list_del(&buf->list); 171 leave: 172 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 173 return buf; 174 } 175 176 /* 177 * +=========================================================================== 178 * | 00-1023 | USB packet type '504' 179 * +=========================================================================== 180 * | 00- 03 | sequence number of first sample in that USB packet 181 * +--------------------------------------------------------------------------- 182 * | 04- 15 | garbage 183 * +--------------------------------------------------------------------------- 184 * | 16-1023 | samples 185 * +--------------------------------------------------------------------------- 186 * signed 8-bit sample 187 * 504 * 2 = 1008 samples 188 * 189 * 190 * +=========================================================================== 191 * | 00-1023 | USB packet type '384' 192 * +=========================================================================== 193 * | 00- 03 | sequence number of first sample in that USB packet 194 * +--------------------------------------------------------------------------- 195 * | 04- 15 | garbage 196 * +--------------------------------------------------------------------------- 197 * | 16- 175 | samples 198 * +--------------------------------------------------------------------------- 199 * | 176- 179 | control bits for previous samples 200 * +--------------------------------------------------------------------------- 201 * | 180- 339 | samples 202 * +--------------------------------------------------------------------------- 203 * | 340- 343 | control bits for previous samples 204 * +--------------------------------------------------------------------------- 205 * | 344- 503 | samples 206 * +--------------------------------------------------------------------------- 207 * | 504- 507 | control bits for previous samples 208 * +--------------------------------------------------------------------------- 209 * | 508- 667 | samples 210 * +--------------------------------------------------------------------------- 211 * | 668- 671 | control bits for previous samples 212 * +--------------------------------------------------------------------------- 213 * | 672- 831 | samples 214 * +--------------------------------------------------------------------------- 215 * | 832- 835 | control bits for previous samples 216 * +--------------------------------------------------------------------------- 217 * | 836- 995 | samples 218 * +--------------------------------------------------------------------------- 219 * | 996- 999 | control bits for previous samples 220 * +--------------------------------------------------------------------------- 221 * | 1000-1023 | garbage 222 * +--------------------------------------------------------------------------- 223 * 224 * Bytes 4 - 7 could have some meaning? 225 * 226 * Control bits for previous samples is 32-bit field, containing 16 x 2-bit 227 * numbers. This results one 2-bit number for 8 samples. It is likely used for 228 * for bit shifting sample by given bits, increasing actual sampling resolution. 229 * Number 2 (0b10) was never seen. 230 * 231 * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes 232 * 233 * 234 * +=========================================================================== 235 * | 00-1023 | USB packet type '336' 236 * +=========================================================================== 237 * | 00- 03 | sequence number of first sample in that USB packet 238 * +--------------------------------------------------------------------------- 239 * | 04- 15 | garbage 240 * +--------------------------------------------------------------------------- 241 * | 16-1023 | samples 242 * +--------------------------------------------------------------------------- 243 * signed 12-bit sample 244 * 245 * 246 * +=========================================================================== 247 * | 00-1023 | USB packet type '252' 248 * +=========================================================================== 249 * | 00- 03 | sequence number of first sample in that USB packet 250 * +--------------------------------------------------------------------------- 251 * | 04- 15 | garbage 252 * +--------------------------------------------------------------------------- 253 * | 16-1023 | samples 254 * +--------------------------------------------------------------------------- 255 * signed 14-bit sample 256 */ 257 258 static int msi2500_convert_stream(struct msi2500_dev *dev, u8 *dst, u8 *src, 259 unsigned int src_len) 260 { 261 unsigned int i, j, transactions, dst_len = 0; 262 u32 sample[3]; 263 264 /* There could be 1-3 1024 byte transactions per packet */ 265 transactions = src_len / 1024; 266 267 for (i = 0; i < transactions; i++) { 268 sample[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | 269 src[0] << 0; 270 if (i == 0 && dev->next_sample != sample[0]) { 271 dev_dbg_ratelimited(dev->dev, 272 "%d samples lost, %d %08x:%08x\n", 273 sample[0] - dev->next_sample, 274 src_len, dev->next_sample, 275 sample[0]); 276 } 277 278 /* 279 * Dump all unknown 'garbage' data - maybe we will discover 280 * someday if there is something rational... 281 */ 282 dev_dbg_ratelimited(dev->dev, "%*ph\n", 12, &src[4]); 283 284 src += 16; /* skip header */ 285 286 switch (dev->pixelformat) { 287 case V4L2_SDR_FMT_CU8: /* 504 x IQ samples */ 288 { 289 s8 *s8src = (s8 *)src; 290 u8 *u8dst = (u8 *)dst; 291 292 for (j = 0; j < 1008; j++) 293 *u8dst++ = *s8src++ + 128; 294 295 src += 1008; 296 dst += 1008; 297 dst_len += 1008; 298 dev->next_sample = sample[i] + 504; 299 break; 300 } 301 case V4L2_SDR_FMT_CU16LE: /* 252 x IQ samples */ 302 { 303 s16 *s16src = (s16 *)src; 304 u16 *u16dst = (u16 *)dst; 305 struct {signed int x:14; } se; /* sign extension */ 306 unsigned int utmp; 307 308 for (j = 0; j < 1008; j += 2) { 309 /* sign extension from 14-bit to signed int */ 310 se.x = *s16src++; 311 /* from signed int to unsigned int */ 312 utmp = se.x + 8192; 313 /* from 14-bit to 16-bit */ 314 *u16dst++ = utmp << 2 | utmp >> 12; 315 } 316 317 src += 1008; 318 dst += 1008; 319 dst_len += 1008; 320 dev->next_sample = sample[i] + 252; 321 break; 322 } 323 case MSI2500_PIX_FMT_SDR_MSI2500_384: /* 384 x IQ samples */ 324 /* Dump unknown 'garbage' data */ 325 dev_dbg_ratelimited(dev->dev, "%*ph\n", 24, &src[1000]); 326 memcpy(dst, src, 984); 327 src += 984 + 24; 328 dst += 984; 329 dst_len += 984; 330 dev->next_sample = sample[i] + 384; 331 break; 332 case V4L2_SDR_FMT_CS8: /* 504 x IQ samples */ 333 memcpy(dst, src, 1008); 334 src += 1008; 335 dst += 1008; 336 dst_len += 1008; 337 dev->next_sample = sample[i] + 504; 338 break; 339 case MSI2500_PIX_FMT_SDR_S12: /* 336 x IQ samples */ 340 memcpy(dst, src, 1008); 341 src += 1008; 342 dst += 1008; 343 dst_len += 1008; 344 dev->next_sample = sample[i] + 336; 345 break; 346 case V4L2_SDR_FMT_CS14LE: /* 252 x IQ samples */ 347 memcpy(dst, src, 1008); 348 src += 1008; 349 dst += 1008; 350 dst_len += 1008; 351 dev->next_sample = sample[i] + 252; 352 break; 353 default: 354 break; 355 } 356 } 357 358 /* calculate sample rate and output it in 10 seconds intervals */ 359 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) { 360 #define MSECS 10000UL 361 unsigned int msecs = jiffies_to_msecs(jiffies - 362 dev->jiffies_next + msecs_to_jiffies(MSECS)); 363 unsigned int samples = dev->next_sample - dev->sample; 364 365 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); 366 dev->sample = dev->next_sample; 367 dev_dbg(dev->dev, "size=%u samples=%u msecs=%u sample rate=%lu\n", 368 src_len, samples, msecs, 369 samples * 1000UL / msecs); 370 } 371 372 return dst_len; 373 } 374 375 /* 376 * This gets called for the Isochronous pipe (stream). This is done in interrupt 377 * time, so it has to be fast, not crash, and not stall. Neat. 378 */ 379 static void msi2500_isoc_handler(struct urb *urb) 380 { 381 struct msi2500_dev *dev = (struct msi2500_dev *)urb->context; 382 int i, flen, fstatus; 383 unsigned char *iso_buf = NULL; 384 struct msi2500_frame_buf *fbuf; 385 386 if (unlikely(urb->status == -ENOENT || 387 urb->status == -ECONNRESET || 388 urb->status == -ESHUTDOWN)) { 389 dev_dbg(dev->dev, "URB (%p) unlinked %ssynchronuously\n", 390 urb, urb->status == -ENOENT ? "" : "a"); 391 return; 392 } 393 394 if (unlikely(urb->status != 0)) { 395 dev_dbg(dev->dev, "called with status %d\n", urb->status); 396 /* Give up after a number of contiguous errors */ 397 if (++dev->isoc_errors > MAX_ISOC_ERRORS) 398 dev_dbg(dev->dev, "Too many ISOC errors, bailing out\n"); 399 goto handler_end; 400 } else { 401 /* Reset ISOC error counter. We did get here, after all. */ 402 dev->isoc_errors = 0; 403 } 404 405 /* Compact data */ 406 for (i = 0; i < urb->number_of_packets; i++) { 407 void *ptr; 408 409 /* Check frame error */ 410 fstatus = urb->iso_frame_desc[i].status; 411 if (unlikely(fstatus)) { 412 dev_dbg_ratelimited(dev->dev, 413 "frame=%d/%d has error %d skipping\n", 414 i, urb->number_of_packets, fstatus); 415 continue; 416 } 417 418 /* Check if that frame contains data */ 419 flen = urb->iso_frame_desc[i].actual_length; 420 if (unlikely(flen == 0)) 421 continue; 422 423 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 424 425 /* Get free framebuffer */ 426 fbuf = msi2500_get_next_fill_buf(dev); 427 if (unlikely(fbuf == NULL)) { 428 dev->vb_full++; 429 dev_dbg_ratelimited(dev->dev, 430 "videobuf is full, %d packets dropped\n", 431 dev->vb_full); 432 continue; 433 } 434 435 /* fill framebuffer */ 436 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0); 437 flen = msi2500_convert_stream(dev, ptr, iso_buf, flen); 438 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, flen); 439 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); 440 } 441 442 handler_end: 443 i = usb_submit_urb(urb, GFP_ATOMIC); 444 if (unlikely(i != 0)) 445 dev_dbg(dev->dev, "Error (%d) re-submitting urb\n", i); 446 } 447 448 static void msi2500_iso_stop(struct msi2500_dev *dev) 449 { 450 int i; 451 452 dev_dbg(dev->dev, "\n"); 453 454 /* Unlinking ISOC buffers one by one */ 455 for (i = 0; i < MAX_ISO_BUFS; i++) { 456 if (dev->urbs[i]) { 457 dev_dbg(dev->dev, "Unlinking URB %p\n", dev->urbs[i]); 458 usb_kill_urb(dev->urbs[i]); 459 } 460 } 461 } 462 463 static void msi2500_iso_free(struct msi2500_dev *dev) 464 { 465 int i; 466 467 dev_dbg(dev->dev, "\n"); 468 469 /* Freeing ISOC buffers one by one */ 470 for (i = 0; i < MAX_ISO_BUFS; i++) { 471 if (dev->urbs[i]) { 472 dev_dbg(dev->dev, "Freeing URB\n"); 473 if (dev->urbs[i]->transfer_buffer) { 474 usb_free_coherent(dev->udev, 475 dev->urbs[i]->transfer_buffer_length, 476 dev->urbs[i]->transfer_buffer, 477 dev->urbs[i]->transfer_dma); 478 } 479 usb_free_urb(dev->urbs[i]); 480 dev->urbs[i] = NULL; 481 } 482 } 483 } 484 485 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 486 static void msi2500_isoc_cleanup(struct msi2500_dev *dev) 487 { 488 dev_dbg(dev->dev, "\n"); 489 490 msi2500_iso_stop(dev); 491 msi2500_iso_free(dev); 492 } 493 494 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 495 static int msi2500_isoc_init(struct msi2500_dev *dev) 496 { 497 struct urb *urb; 498 int i, j, ret; 499 500 dev_dbg(dev->dev, "\n"); 501 502 dev->isoc_errors = 0; 503 504 ret = usb_set_interface(dev->udev, 0, 1); 505 if (ret) 506 return ret; 507 508 /* Allocate and init Isochronuous urbs */ 509 for (i = 0; i < MAX_ISO_BUFS; i++) { 510 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); 511 if (urb == NULL) { 512 msi2500_isoc_cleanup(dev); 513 return -ENOMEM; 514 } 515 dev->urbs[i] = urb; 516 dev_dbg(dev->dev, "Allocated URB at 0x%p\n", urb); 517 518 urb->interval = 1; 519 urb->dev = dev->udev; 520 urb->pipe = usb_rcvisocpipe(dev->udev, 0x81); 521 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 522 urb->transfer_buffer = usb_alloc_coherent(dev->udev, 523 ISO_BUFFER_SIZE, 524 GFP_KERNEL, &urb->transfer_dma); 525 if (urb->transfer_buffer == NULL) { 526 dev_err(dev->dev, 527 "Failed to allocate urb buffer %d\n", i); 528 msi2500_isoc_cleanup(dev); 529 return -ENOMEM; 530 } 531 urb->transfer_buffer_length = ISO_BUFFER_SIZE; 532 urb->complete = msi2500_isoc_handler; 533 urb->context = dev; 534 urb->start_frame = 0; 535 urb->number_of_packets = ISO_FRAMES_PER_DESC; 536 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { 537 urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; 538 urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; 539 } 540 } 541 542 /* link */ 543 for (i = 0; i < MAX_ISO_BUFS; i++) { 544 ret = usb_submit_urb(dev->urbs[i], GFP_KERNEL); 545 if (ret) { 546 dev_err(dev->dev, 547 "usb_submit_urb %d failed with error %d\n", 548 i, ret); 549 msi2500_isoc_cleanup(dev); 550 return ret; 551 } 552 dev_dbg(dev->dev, "URB 0x%p submitted.\n", dev->urbs[i]); 553 } 554 555 /* All is done... */ 556 return 0; 557 } 558 559 /* Must be called with vb_queue_lock hold */ 560 static void msi2500_cleanup_queued_bufs(struct msi2500_dev *dev) 561 { 562 unsigned long flags; 563 564 dev_dbg(dev->dev, "\n"); 565 566 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 567 while (!list_empty(&dev->queued_bufs)) { 568 struct msi2500_frame_buf *buf; 569 570 buf = list_entry(dev->queued_bufs.next, 571 struct msi2500_frame_buf, list); 572 list_del(&buf->list); 573 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 574 } 575 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 576 } 577 578 /* The user yanked out the cable... */ 579 static void msi2500_disconnect(struct usb_interface *intf) 580 { 581 struct v4l2_device *v = usb_get_intfdata(intf); 582 struct msi2500_dev *dev = 583 container_of(v, struct msi2500_dev, v4l2_dev); 584 585 dev_dbg(dev->dev, "\n"); 586 587 mutex_lock(&dev->vb_queue_lock); 588 mutex_lock(&dev->v4l2_lock); 589 /* No need to keep the urbs around after disconnection */ 590 dev->udev = NULL; 591 v4l2_device_disconnect(&dev->v4l2_dev); 592 video_unregister_device(&dev->vdev); 593 spi_unregister_master(dev->master); 594 mutex_unlock(&dev->v4l2_lock); 595 mutex_unlock(&dev->vb_queue_lock); 596 597 v4l2_device_put(&dev->v4l2_dev); 598 } 599 600 static int msi2500_querycap(struct file *file, void *fh, 601 struct v4l2_capability *cap) 602 { 603 struct msi2500_dev *dev = video_drvdata(file); 604 605 dev_dbg(dev->dev, "\n"); 606 607 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 608 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card)); 609 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 610 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 611 V4L2_CAP_READWRITE | V4L2_CAP_TUNER; 612 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 613 return 0; 614 } 615 616 /* Videobuf2 operations */ 617 static int msi2500_queue_setup(struct vb2_queue *vq, 618 unsigned int *nbuffers, 619 unsigned int *nplanes, unsigned int sizes[], 620 struct device *alloc_devs[]) 621 { 622 struct msi2500_dev *dev = vb2_get_drv_priv(vq); 623 624 dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers); 625 626 /* Absolute min and max number of buffers available for mmap() */ 627 *nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32); 628 *nplanes = 1; 629 sizes[0] = PAGE_ALIGN(dev->buffersize); 630 dev_dbg(dev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 631 return 0; 632 } 633 634 static void msi2500_buf_queue(struct vb2_buffer *vb) 635 { 636 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 637 struct msi2500_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 638 struct msi2500_frame_buf *buf = container_of(vbuf, 639 struct msi2500_frame_buf, 640 vb); 641 unsigned long flags; 642 643 /* Check the device has not disconnected between prep and queuing */ 644 if (unlikely(!dev->udev)) { 645 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 646 return; 647 } 648 649 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 650 list_add_tail(&buf->list, &dev->queued_bufs); 651 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 652 } 653 654 #define CMD_WREG 0x41 655 #define CMD_START_STREAMING 0x43 656 #define CMD_STOP_STREAMING 0x45 657 #define CMD_READ_UNKNOWN 0x48 658 659 #define msi2500_dbg_usb_control_msg(_dev, _r, _t, _v, _i, _b, _l) { \ 660 char *_direction; \ 661 if (_t & USB_DIR_IN) \ 662 _direction = "<<<"; \ 663 else \ 664 _direction = ">>>"; \ 665 dev_dbg(_dev, "%02x %02x %02x %02x %02x %02x %02x %02x %s %*ph\n", \ 666 _t, _r, _v & 0xff, _v >> 8, _i & 0xff, _i >> 8, \ 667 _l & 0xff, _l >> 8, _direction, _l, _b); \ 668 } 669 670 static int msi2500_ctrl_msg(struct msi2500_dev *dev, u8 cmd, u32 data) 671 { 672 int ret; 673 u8 request = cmd; 674 u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR; 675 u16 value = (data >> 0) & 0xffff; 676 u16 index = (data >> 16) & 0xffff; 677 678 msi2500_dbg_usb_control_msg(dev->dev, request, requesttype, 679 value, index, NULL, 0); 680 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), request, 681 requesttype, value, index, NULL, 0, 2000); 682 if (ret) 683 dev_err(dev->dev, "failed %d, cmd %02x, data %04x\n", 684 ret, cmd, data); 685 686 return ret; 687 } 688 689 static int msi2500_set_usb_adc(struct msi2500_dev *dev) 690 { 691 int ret; 692 unsigned int f_vco, f_sr, div_n, k, k_cw, div_out; 693 u32 reg3, reg4, reg7; 694 struct v4l2_ctrl *bandwidth_auto; 695 struct v4l2_ctrl *bandwidth; 696 697 f_sr = dev->f_adc; 698 699 /* set tuner, subdev, filters according to sampling rate */ 700 bandwidth_auto = v4l2_ctrl_find(&dev->hdl, 701 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 702 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 703 bandwidth = v4l2_ctrl_find(&dev->hdl, 704 V4L2_CID_RF_TUNER_BANDWIDTH); 705 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 706 } 707 708 /* select stream format */ 709 switch (dev->pixelformat) { 710 case V4L2_SDR_FMT_CU8: 711 reg7 = 0x000c9407; /* 504 */ 712 break; 713 case V4L2_SDR_FMT_CU16LE: 714 reg7 = 0x00009407; /* 252 */ 715 break; 716 case V4L2_SDR_FMT_CS8: 717 reg7 = 0x000c9407; /* 504 */ 718 break; 719 case MSI2500_PIX_FMT_SDR_MSI2500_384: 720 reg7 = 0x0000a507; /* 384 */ 721 break; 722 case MSI2500_PIX_FMT_SDR_S12: 723 reg7 = 0x00008507; /* 336 */ 724 break; 725 case V4L2_SDR_FMT_CS14LE: 726 reg7 = 0x00009407; /* 252 */ 727 break; 728 default: 729 reg7 = 0x000c9407; /* 504 */ 730 break; 731 } 732 733 /* 734 * Fractional-N synthesizer 735 * 736 * +----------------------------------------+ 737 * v | 738 * Fref +----+ +-------+ +-----+ +------+ +---+ 739 * ------> | PD | --> | VCO | --> | /2 | ------> | /N.F | <-- | K | 740 * +----+ +-------+ +-----+ +------+ +---+ 741 * | 742 * | 743 * v 744 * +-------+ +-----+ Fout 745 * | /Rout | --> | /12 | ------> 746 * +-------+ +-----+ 747 */ 748 /* 749 * Synthesizer config is just a educated guess... 750 * 751 * [7:0] 0x03, register address 752 * [8] 1, power control 753 * [9] ?, power control 754 * [12:10] output divider 755 * [13] 0 ? 756 * [14] 0 ? 757 * [15] fractional MSB, bit 20 758 * [16:19] N 759 * [23:20] ? 760 * [24:31] 0x01 761 * 762 * output divider 763 * val div 764 * 0 - (invalid) 765 * 1 4 766 * 2 6 767 * 3 8 768 * 4 10 769 * 5 12 770 * 6 14 771 * 7 16 772 * 773 * VCO 202000000 - 720000000++ 774 */ 775 776 #define F_REF 24000000 777 #define DIV_PRE_N 2 778 #define DIV_LO_OUT 12 779 reg3 = 0x01000303; 780 reg4 = 0x00000004; 781 782 /* XXX: Filters? AGC? VCO band? */ 783 if (f_sr < 6000000) 784 reg3 |= 0x1 << 20; 785 else if (f_sr < 7000000) 786 reg3 |= 0x5 << 20; 787 else if (f_sr < 8500000) 788 reg3 |= 0x9 << 20; 789 else 790 reg3 |= 0xd << 20; 791 792 for (div_out = 4; div_out < 16; div_out += 2) { 793 f_vco = f_sr * div_out * DIV_LO_OUT; 794 dev_dbg(dev->dev, "div_out=%u f_vco=%u\n", div_out, f_vco); 795 if (f_vco >= 202000000) 796 break; 797 } 798 799 /* Calculate PLL integer and fractional control word. */ 800 div_n = div_u64_rem(f_vco, DIV_PRE_N * F_REF, &k); 801 k_cw = div_u64((u64) k * 0x200000, DIV_PRE_N * F_REF); 802 803 reg3 |= div_n << 16; 804 reg3 |= (div_out / 2 - 1) << 10; 805 reg3 |= ((k_cw >> 20) & 0x000001) << 15; /* [20] */ 806 reg4 |= ((k_cw >> 0) & 0x0fffff) << 8; /* [19:0] */ 807 808 dev_dbg(dev->dev, 809 "f_sr=%u f_vco=%u div_n=%u k=%u div_out=%u reg3=%08x reg4=%08x\n", 810 f_sr, f_vco, div_n, k, div_out, reg3, reg4); 811 812 ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00608008); 813 if (ret) 814 goto err; 815 816 ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00000c05); 817 if (ret) 818 goto err; 819 820 ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00020000); 821 if (ret) 822 goto err; 823 824 ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00480102); 825 if (ret) 826 goto err; 827 828 ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00f38008); 829 if (ret) 830 goto err; 831 832 ret = msi2500_ctrl_msg(dev, CMD_WREG, reg7); 833 if (ret) 834 goto err; 835 836 ret = msi2500_ctrl_msg(dev, CMD_WREG, reg4); 837 if (ret) 838 goto err; 839 840 ret = msi2500_ctrl_msg(dev, CMD_WREG, reg3); 841 err: 842 return ret; 843 } 844 845 static int msi2500_start_streaming(struct vb2_queue *vq, unsigned int count) 846 { 847 struct msi2500_dev *dev = vb2_get_drv_priv(vq); 848 int ret; 849 850 dev_dbg(dev->dev, "\n"); 851 852 if (!dev->udev) 853 return -ENODEV; 854 855 if (mutex_lock_interruptible(&dev->v4l2_lock)) 856 return -ERESTARTSYS; 857 858 /* wake-up tuner */ 859 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); 860 861 ret = msi2500_set_usb_adc(dev); 862 863 ret = msi2500_isoc_init(dev); 864 if (ret) 865 msi2500_cleanup_queued_bufs(dev); 866 867 ret = msi2500_ctrl_msg(dev, CMD_START_STREAMING, 0); 868 869 mutex_unlock(&dev->v4l2_lock); 870 871 return ret; 872 } 873 874 static void msi2500_stop_streaming(struct vb2_queue *vq) 875 { 876 struct msi2500_dev *dev = vb2_get_drv_priv(vq); 877 878 dev_dbg(dev->dev, "\n"); 879 880 mutex_lock(&dev->v4l2_lock); 881 882 if (dev->udev) 883 msi2500_isoc_cleanup(dev); 884 885 msi2500_cleanup_queued_bufs(dev); 886 887 /* according to tests, at least 700us delay is required */ 888 msleep(20); 889 if (!msi2500_ctrl_msg(dev, CMD_STOP_STREAMING, 0)) { 890 /* sleep USB IF / ADC */ 891 msi2500_ctrl_msg(dev, CMD_WREG, 0x01000003); 892 } 893 894 /* sleep tuner */ 895 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); 896 897 mutex_unlock(&dev->v4l2_lock); 898 } 899 900 static const struct vb2_ops msi2500_vb2_ops = { 901 .queue_setup = msi2500_queue_setup, 902 .buf_queue = msi2500_buf_queue, 903 .start_streaming = msi2500_start_streaming, 904 .stop_streaming = msi2500_stop_streaming, 905 .wait_prepare = vb2_ops_wait_prepare, 906 .wait_finish = vb2_ops_wait_finish, 907 }; 908 909 static int msi2500_enum_fmt_sdr_cap(struct file *file, void *priv, 910 struct v4l2_fmtdesc *f) 911 { 912 struct msi2500_dev *dev = video_drvdata(file); 913 914 dev_dbg(dev->dev, "index=%d\n", f->index); 915 916 if (f->index >= dev->num_formats) 917 return -EINVAL; 918 919 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 920 f->pixelformat = formats[f->index].pixelformat; 921 922 return 0; 923 } 924 925 static int msi2500_g_fmt_sdr_cap(struct file *file, void *priv, 926 struct v4l2_format *f) 927 { 928 struct msi2500_dev *dev = video_drvdata(file); 929 930 dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n", 931 (char *)&dev->pixelformat); 932 933 f->fmt.sdr.pixelformat = dev->pixelformat; 934 f->fmt.sdr.buffersize = dev->buffersize; 935 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 936 937 return 0; 938 } 939 940 static int msi2500_s_fmt_sdr_cap(struct file *file, void *priv, 941 struct v4l2_format *f) 942 { 943 struct msi2500_dev *dev = video_drvdata(file); 944 struct vb2_queue *q = &dev->vb_queue; 945 int i; 946 947 dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n", 948 (char *)&f->fmt.sdr.pixelformat); 949 950 if (vb2_is_busy(q)) 951 return -EBUSY; 952 953 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 954 for (i = 0; i < dev->num_formats; i++) { 955 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 956 dev->pixelformat = formats[i].pixelformat; 957 dev->buffersize = formats[i].buffersize; 958 f->fmt.sdr.buffersize = formats[i].buffersize; 959 return 0; 960 } 961 } 962 963 dev->pixelformat = formats[0].pixelformat; 964 dev->buffersize = formats[0].buffersize; 965 f->fmt.sdr.pixelformat = formats[0].pixelformat; 966 f->fmt.sdr.buffersize = formats[0].buffersize; 967 968 return 0; 969 } 970 971 static int msi2500_try_fmt_sdr_cap(struct file *file, void *priv, 972 struct v4l2_format *f) 973 { 974 struct msi2500_dev *dev = video_drvdata(file); 975 int i; 976 977 dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n", 978 (char *)&f->fmt.sdr.pixelformat); 979 980 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 981 for (i = 0; i < dev->num_formats; i++) { 982 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 983 f->fmt.sdr.buffersize = formats[i].buffersize; 984 return 0; 985 } 986 } 987 988 f->fmt.sdr.pixelformat = formats[0].pixelformat; 989 f->fmt.sdr.buffersize = formats[0].buffersize; 990 991 return 0; 992 } 993 994 static int msi2500_s_tuner(struct file *file, void *priv, 995 const struct v4l2_tuner *v) 996 { 997 struct msi2500_dev *dev = video_drvdata(file); 998 int ret; 999 1000 dev_dbg(dev->dev, "index=%d\n", v->index); 1001 1002 if (v->index == 0) 1003 ret = 0; 1004 else if (v->index == 1) 1005 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); 1006 else 1007 ret = -EINVAL; 1008 1009 return ret; 1010 } 1011 1012 static int msi2500_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) 1013 { 1014 struct msi2500_dev *dev = video_drvdata(file); 1015 int ret; 1016 1017 dev_dbg(dev->dev, "index=%d\n", v->index); 1018 1019 if (v->index == 0) { 1020 strlcpy(v->name, "Mirics MSi2500", sizeof(v->name)); 1021 v->type = V4L2_TUNER_ADC; 1022 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 1023 v->rangelow = 1200000; 1024 v->rangehigh = 15000000; 1025 ret = 0; 1026 } else if (v->index == 1) { 1027 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); 1028 } else { 1029 ret = -EINVAL; 1030 } 1031 1032 return ret; 1033 } 1034 1035 static int msi2500_g_frequency(struct file *file, void *priv, 1036 struct v4l2_frequency *f) 1037 { 1038 struct msi2500_dev *dev = video_drvdata(file); 1039 int ret = 0; 1040 1041 dev_dbg(dev->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1042 1043 if (f->tuner == 0) { 1044 f->frequency = dev->f_adc; 1045 ret = 0; 1046 } else if (f->tuner == 1) { 1047 f->type = V4L2_TUNER_RF; 1048 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); 1049 } else { 1050 ret = -EINVAL; 1051 } 1052 1053 return ret; 1054 } 1055 1056 static int msi2500_s_frequency(struct file *file, void *priv, 1057 const struct v4l2_frequency *f) 1058 { 1059 struct msi2500_dev *dev = video_drvdata(file); 1060 int ret; 1061 1062 dev_dbg(dev->dev, "tuner=%d type=%d frequency=%u\n", 1063 f->tuner, f->type, f->frequency); 1064 1065 if (f->tuner == 0) { 1066 dev->f_adc = clamp_t(unsigned int, f->frequency, 1067 bands[0].rangelow, 1068 bands[0].rangehigh); 1069 dev_dbg(dev->dev, "ADC frequency=%u Hz\n", dev->f_adc); 1070 ret = msi2500_set_usb_adc(dev); 1071 } else if (f->tuner == 1) { 1072 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); 1073 } else { 1074 ret = -EINVAL; 1075 } 1076 1077 return ret; 1078 } 1079 1080 static int msi2500_enum_freq_bands(struct file *file, void *priv, 1081 struct v4l2_frequency_band *band) 1082 { 1083 struct msi2500_dev *dev = video_drvdata(file); 1084 int ret; 1085 1086 dev_dbg(dev->dev, "tuner=%d type=%d index=%d\n", 1087 band->tuner, band->type, band->index); 1088 1089 if (band->tuner == 0) { 1090 if (band->index >= ARRAY_SIZE(bands)) { 1091 ret = -EINVAL; 1092 } else { 1093 *band = bands[band->index]; 1094 ret = 0; 1095 } 1096 } else if (band->tuner == 1) { 1097 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, 1098 enum_freq_bands, band); 1099 } else { 1100 ret = -EINVAL; 1101 } 1102 1103 return ret; 1104 } 1105 1106 static const struct v4l2_ioctl_ops msi2500_ioctl_ops = { 1107 .vidioc_querycap = msi2500_querycap, 1108 1109 .vidioc_enum_fmt_sdr_cap = msi2500_enum_fmt_sdr_cap, 1110 .vidioc_g_fmt_sdr_cap = msi2500_g_fmt_sdr_cap, 1111 .vidioc_s_fmt_sdr_cap = msi2500_s_fmt_sdr_cap, 1112 .vidioc_try_fmt_sdr_cap = msi2500_try_fmt_sdr_cap, 1113 1114 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1115 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1116 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1117 .vidioc_querybuf = vb2_ioctl_querybuf, 1118 .vidioc_qbuf = vb2_ioctl_qbuf, 1119 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1120 1121 .vidioc_streamon = vb2_ioctl_streamon, 1122 .vidioc_streamoff = vb2_ioctl_streamoff, 1123 1124 .vidioc_g_tuner = msi2500_g_tuner, 1125 .vidioc_s_tuner = msi2500_s_tuner, 1126 1127 .vidioc_g_frequency = msi2500_g_frequency, 1128 .vidioc_s_frequency = msi2500_s_frequency, 1129 .vidioc_enum_freq_bands = msi2500_enum_freq_bands, 1130 1131 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1132 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1133 .vidioc_log_status = v4l2_ctrl_log_status, 1134 }; 1135 1136 static const struct v4l2_file_operations msi2500_fops = { 1137 .owner = THIS_MODULE, 1138 .open = v4l2_fh_open, 1139 .release = vb2_fop_release, 1140 .read = vb2_fop_read, 1141 .poll = vb2_fop_poll, 1142 .mmap = vb2_fop_mmap, 1143 .unlocked_ioctl = video_ioctl2, 1144 }; 1145 1146 static struct video_device msi2500_template = { 1147 .name = "Mirics MSi3101 SDR Dongle", 1148 .release = video_device_release_empty, 1149 .fops = &msi2500_fops, 1150 .ioctl_ops = &msi2500_ioctl_ops, 1151 }; 1152 1153 static void msi2500_video_release(struct v4l2_device *v) 1154 { 1155 struct msi2500_dev *dev = container_of(v, struct msi2500_dev, v4l2_dev); 1156 1157 v4l2_ctrl_handler_free(&dev->hdl); 1158 v4l2_device_unregister(&dev->v4l2_dev); 1159 kfree(dev); 1160 } 1161 1162 static int msi2500_transfer_one_message(struct spi_master *master, 1163 struct spi_message *m) 1164 { 1165 struct msi2500_dev *dev = spi_master_get_devdata(master); 1166 struct spi_transfer *t; 1167 int ret = 0; 1168 u32 data; 1169 1170 list_for_each_entry(t, &m->transfers, transfer_list) { 1171 dev_dbg(dev->dev, "msg=%*ph\n", t->len, t->tx_buf); 1172 data = 0x09; /* reg 9 is SPI adapter */ 1173 data |= ((u8 *)t->tx_buf)[0] << 8; 1174 data |= ((u8 *)t->tx_buf)[1] << 16; 1175 data |= ((u8 *)t->tx_buf)[2] << 24; 1176 ret = msi2500_ctrl_msg(dev, CMD_WREG, data); 1177 } 1178 1179 m->status = ret; 1180 spi_finalize_current_message(master); 1181 return ret; 1182 } 1183 1184 static int msi2500_probe(struct usb_interface *intf, 1185 const struct usb_device_id *id) 1186 { 1187 struct msi2500_dev *dev; 1188 struct v4l2_subdev *sd; 1189 struct spi_master *master; 1190 int ret; 1191 static struct spi_board_info board_info = { 1192 .modalias = "msi001", 1193 .bus_num = 0, 1194 .chip_select = 0, 1195 .max_speed_hz = 12000000, 1196 }; 1197 1198 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1199 if (!dev) { 1200 ret = -ENOMEM; 1201 goto err; 1202 } 1203 1204 mutex_init(&dev->v4l2_lock); 1205 mutex_init(&dev->vb_queue_lock); 1206 spin_lock_init(&dev->queued_bufs_lock); 1207 INIT_LIST_HEAD(&dev->queued_bufs); 1208 dev->dev = &intf->dev; 1209 dev->udev = interface_to_usbdev(intf); 1210 dev->f_adc = bands[0].rangelow; 1211 dev->pixelformat = formats[0].pixelformat; 1212 dev->buffersize = formats[0].buffersize; 1213 dev->num_formats = NUM_FORMATS; 1214 if (!msi2500_emulated_fmt) 1215 dev->num_formats -= 2; 1216 1217 /* Init videobuf2 queue structure */ 1218 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1219 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1220 dev->vb_queue.drv_priv = dev; 1221 dev->vb_queue.buf_struct_size = sizeof(struct msi2500_frame_buf); 1222 dev->vb_queue.ops = &msi2500_vb2_ops; 1223 dev->vb_queue.mem_ops = &vb2_vmalloc_memops; 1224 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1225 ret = vb2_queue_init(&dev->vb_queue); 1226 if (ret) { 1227 dev_err(dev->dev, "Could not initialize vb2 queue\n"); 1228 goto err_free_mem; 1229 } 1230 1231 /* Init video_device structure */ 1232 dev->vdev = msi2500_template; 1233 dev->vdev.queue = &dev->vb_queue; 1234 dev->vdev.queue->lock = &dev->vb_queue_lock; 1235 video_set_drvdata(&dev->vdev, dev); 1236 1237 /* Register the v4l2_device structure */ 1238 dev->v4l2_dev.release = msi2500_video_release; 1239 ret = v4l2_device_register(&intf->dev, &dev->v4l2_dev); 1240 if (ret) { 1241 dev_err(dev->dev, "Failed to register v4l2-device (%d)\n", ret); 1242 goto err_free_mem; 1243 } 1244 1245 /* SPI master adapter */ 1246 master = spi_alloc_master(dev->dev, 0); 1247 if (master == NULL) { 1248 ret = -ENOMEM; 1249 goto err_unregister_v4l2_dev; 1250 } 1251 1252 dev->master = master; 1253 master->bus_num = 0; 1254 master->num_chipselect = 1; 1255 master->transfer_one_message = msi2500_transfer_one_message; 1256 spi_master_set_devdata(master, dev); 1257 ret = spi_register_master(master); 1258 if (ret) { 1259 spi_master_put(master); 1260 goto err_unregister_v4l2_dev; 1261 } 1262 1263 /* load v4l2 subdevice */ 1264 sd = v4l2_spi_new_subdev(&dev->v4l2_dev, master, &board_info); 1265 dev->v4l2_subdev = sd; 1266 if (sd == NULL) { 1267 dev_err(dev->dev, "cannot get v4l2 subdevice\n"); 1268 ret = -ENODEV; 1269 goto err_unregister_master; 1270 } 1271 1272 /* Register controls */ 1273 v4l2_ctrl_handler_init(&dev->hdl, 0); 1274 if (dev->hdl.error) { 1275 ret = dev->hdl.error; 1276 dev_err(dev->dev, "Could not initialize controls\n"); 1277 goto err_free_controls; 1278 } 1279 1280 /* currently all controls are from subdev */ 1281 v4l2_ctrl_add_handler(&dev->hdl, sd->ctrl_handler, NULL); 1282 1283 dev->v4l2_dev.ctrl_handler = &dev->hdl; 1284 dev->vdev.v4l2_dev = &dev->v4l2_dev; 1285 dev->vdev.lock = &dev->v4l2_lock; 1286 1287 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1); 1288 if (ret) { 1289 dev_err(dev->dev, 1290 "Failed to register as video device (%d)\n", ret); 1291 goto err_unregister_v4l2_dev; 1292 } 1293 dev_info(dev->dev, "Registered as %s\n", 1294 video_device_node_name(&dev->vdev)); 1295 dev_notice(dev->dev, 1296 "SDR API is still slightly experimental and functionality changes may follow\n"); 1297 return 0; 1298 err_free_controls: 1299 v4l2_ctrl_handler_free(&dev->hdl); 1300 err_unregister_master: 1301 spi_unregister_master(dev->master); 1302 err_unregister_v4l2_dev: 1303 v4l2_device_unregister(&dev->v4l2_dev); 1304 err_free_mem: 1305 kfree(dev); 1306 err: 1307 return ret; 1308 } 1309 1310 /* USB device ID list */ 1311 static struct usb_device_id msi2500_id_table[] = { 1312 {USB_DEVICE(0x1df7, 0x2500)}, /* Mirics MSi3101 SDR Dongle */ 1313 {USB_DEVICE(0x2040, 0xd300)}, /* Hauppauge WinTV 133559 LF */ 1314 {} 1315 }; 1316 MODULE_DEVICE_TABLE(usb, msi2500_id_table); 1317 1318 /* USB subsystem interface */ 1319 static struct usb_driver msi2500_driver = { 1320 .name = KBUILD_MODNAME, 1321 .probe = msi2500_probe, 1322 .disconnect = msi2500_disconnect, 1323 .id_table = msi2500_id_table, 1324 }; 1325 1326 module_usb_driver(msi2500_driver); 1327 1328 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1329 MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle"); 1330 MODULE_LICENSE("GPL"); 1331