1 /* 2 * Mirics MSi3101 SDR Dongle 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 * That driver is somehow based of pwc driver: 21 * (C) 1999-2004 Nemosoft Unv. 22 * (C) 2004-2006 Luc Saillard (luc@saillard.org) 23 * (C) 2011 Hans de Goede <hdegoede@redhat.com> 24 */ 25 26 #include <linux/module.h> 27 #include <linux/slab.h> 28 #include <asm/div64.h> 29 #include <media/v4l2-device.h> 30 #include <media/v4l2-ioctl.h> 31 #include <media/v4l2-ctrls.h> 32 #include <media/v4l2-event.h> 33 #include <linux/usb.h> 34 #include <media/videobuf2-vmalloc.h> 35 #include <linux/spi/spi.h> 36 37 static bool msi2500_emulated_fmt; 38 module_param_named(emulated_formats, msi2500_emulated_fmt, bool, 0644); 39 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)"); 40 41 /* 42 * iConfiguration 0 43 * bInterfaceNumber 0 44 * bAlternateSetting 1 45 * bNumEndpoints 1 46 * bEndpointAddress 0x81 EP 1 IN 47 * bmAttributes 1 48 * Transfer Type Isochronous 49 * wMaxPacketSize 0x1400 3x 1024 bytes 50 * bInterval 1 51 */ 52 #define MAX_ISO_BUFS (8) 53 #define ISO_FRAMES_PER_DESC (8) 54 #define ISO_MAX_FRAME_SIZE (3 * 1024) 55 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) 56 #define MAX_ISOC_ERRORS 20 57 58 /* 59 * TODO: These formats should be moved to V4L2 API. Formats are currently 60 * disabled from formats[] table, not visible to userspace. 61 */ 62 /* signed 12-bit */ 63 #define MSI2500_PIX_FMT_SDR_S12 v4l2_fourcc('D', 'S', '1', '2') 64 /* Mirics MSi2500 format 384 */ 65 #define MSI2500_PIX_FMT_SDR_MSI2500_384 v4l2_fourcc('M', '3', '8', '4') 66 67 static const struct v4l2_frequency_band bands[] = { 68 { 69 .tuner = 0, 70 .type = V4L2_TUNER_ADC, 71 .index = 0, 72 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 73 .rangelow = 1200000, 74 .rangehigh = 15000000, 75 }, 76 }; 77 78 /* stream formats */ 79 struct msi2500_format { 80 char *name; 81 u32 pixelformat; 82 u32 buffersize; 83 }; 84 85 /* format descriptions for capture and preview */ 86 static struct msi2500_format formats[] = { 87 { 88 .name = "Complex S8", 89 .pixelformat = V4L2_SDR_FMT_CS8, 90 .buffersize = 3 * 1008, 91 #if 0 92 }, { 93 .name = "10+2-bit signed", 94 .pixelformat = MSI2500_PIX_FMT_SDR_MSI2500_384, 95 }, { 96 .name = "12-bit signed", 97 .pixelformat = MSI2500_PIX_FMT_SDR_S12, 98 #endif 99 }, { 100 .name = "Complex S14LE", 101 .pixelformat = V4L2_SDR_FMT_CS14LE, 102 .buffersize = 3 * 1008, 103 }, { 104 .name = "Complex U8 (emulated)", 105 .pixelformat = V4L2_SDR_FMT_CU8, 106 .buffersize = 3 * 1008, 107 }, { 108 .name = "Complex U16LE (emulated)", 109 .pixelformat = V4L2_SDR_FMT_CU16LE, 110 .buffersize = 3 * 1008, 111 }, 112 }; 113 114 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 115 116 /* intermediate buffers with raw data from the USB device */ 117 struct msi2500_frame_buf { 118 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ 119 struct list_head list; 120 }; 121 122 struct msi2500_state { 123 struct device *dev; 124 struct video_device vdev; 125 struct v4l2_device v4l2_dev; 126 struct v4l2_subdev *v4l2_subdev; 127 struct spi_master *master; 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 */ 133 134 /* Note if taking both locks v4l2_lock must always be locked first! */ 135 struct mutex v4l2_lock; /* Protects everything else */ 136 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ 137 138 /* Pointer to our usb_device, will be NULL after unplug */ 139 struct usb_device *udev; /* Both mutexes most be hold when setting! */ 140 141 unsigned int f_adc; 142 u32 pixelformat; 143 u32 buffersize; 144 unsigned int num_formats; 145 146 unsigned int isoc_errors; /* number of contiguous ISOC errors */ 147 unsigned int vb_full; /* vb is full and packets dropped */ 148 149 struct urb *urbs[MAX_ISO_BUFS]; 150 151 /* Controls */ 152 struct v4l2_ctrl_handler hdl; 153 154 u32 next_sample; /* for track lost packets */ 155 u32 sample; /* for sample rate calc */ 156 unsigned long jiffies_next; 157 }; 158 159 /* Private functions */ 160 static struct msi2500_frame_buf *msi2500_get_next_fill_buf( 161 struct msi2500_state *s) 162 { 163 unsigned long flags; 164 struct msi2500_frame_buf *buf = NULL; 165 166 spin_lock_irqsave(&s->queued_bufs_lock, flags); 167 if (list_empty(&s->queued_bufs)) 168 goto leave; 169 170 buf = list_entry(s->queued_bufs.next, struct msi2500_frame_buf, list); 171 list_del(&buf->list); 172 leave: 173 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 174 return buf; 175 } 176 177 /* 178 * +=========================================================================== 179 * | 00-1023 | USB packet type '504' 180 * +=========================================================================== 181 * | 00- 03 | sequence number of first sample in that USB packet 182 * +--------------------------------------------------------------------------- 183 * | 04- 15 | garbage 184 * +--------------------------------------------------------------------------- 185 * | 16-1023 | samples 186 * +--------------------------------------------------------------------------- 187 * signed 8-bit sample 188 * 504 * 2 = 1008 samples 189 * 190 * 191 * +=========================================================================== 192 * | 00-1023 | USB packet type '384' 193 * +=========================================================================== 194 * | 00- 03 | sequence number of first sample in that USB packet 195 * +--------------------------------------------------------------------------- 196 * | 04- 15 | garbage 197 * +--------------------------------------------------------------------------- 198 * | 16- 175 | samples 199 * +--------------------------------------------------------------------------- 200 * | 176- 179 | control bits for previous samples 201 * +--------------------------------------------------------------------------- 202 * | 180- 339 | samples 203 * +--------------------------------------------------------------------------- 204 * | 340- 343 | control bits for previous samples 205 * +--------------------------------------------------------------------------- 206 * | 344- 503 | samples 207 * +--------------------------------------------------------------------------- 208 * | 504- 507 | control bits for previous samples 209 * +--------------------------------------------------------------------------- 210 * | 508- 667 | samples 211 * +--------------------------------------------------------------------------- 212 * | 668- 671 | control bits for previous samples 213 * +--------------------------------------------------------------------------- 214 * | 672- 831 | samples 215 * +--------------------------------------------------------------------------- 216 * | 832- 835 | control bits for previous samples 217 * +--------------------------------------------------------------------------- 218 * | 836- 995 | samples 219 * +--------------------------------------------------------------------------- 220 * | 996- 999 | control bits for previous samples 221 * +--------------------------------------------------------------------------- 222 * | 1000-1023 | garbage 223 * +--------------------------------------------------------------------------- 224 * 225 * Bytes 4 - 7 could have some meaning? 226 * 227 * Control bits for previous samples is 32-bit field, containing 16 x 2-bit 228 * numbers. This results one 2-bit number for 8 samples. It is likely used for 229 * for bit shifting sample by given bits, increasing actual sampling resolution. 230 * Number 2 (0b10) was never seen. 231 * 232 * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes 233 * 234 * 235 * +=========================================================================== 236 * | 00-1023 | USB packet type '336' 237 * +=========================================================================== 238 * | 00- 03 | sequence number of first sample in that USB packet 239 * +--------------------------------------------------------------------------- 240 * | 04- 15 | garbage 241 * +--------------------------------------------------------------------------- 242 * | 16-1023 | samples 243 * +--------------------------------------------------------------------------- 244 * signed 12-bit sample 245 * 246 * 247 * +=========================================================================== 248 * | 00-1023 | USB packet type '252' 249 * +=========================================================================== 250 * | 00- 03 | sequence number of first sample in that USB packet 251 * +--------------------------------------------------------------------------- 252 * | 04- 15 | garbage 253 * +--------------------------------------------------------------------------- 254 * | 16-1023 | samples 255 * +--------------------------------------------------------------------------- 256 * signed 14-bit sample 257 */ 258 259 static int msi2500_convert_stream(struct msi2500_state *s, u8 *dst, u8 *src, 260 unsigned int src_len) 261 { 262 unsigned int i, j, transactions, dst_len = 0; 263 u32 sample[3]; 264 265 /* There could be 1-3 1024 byte transactions per packet */ 266 transactions = src_len / 1024; 267 268 for (i = 0; i < transactions; i++) { 269 sample[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | 270 src[0] << 0; 271 if (i == 0 && s->next_sample != sample[0]) { 272 dev_dbg_ratelimited(s->dev, 273 "%d samples lost, %d %08x:%08x\n", 274 sample[0] - s->next_sample, 275 src_len, s->next_sample, 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(s->dev, "%*ph\n", 12, &src[4]); 283 284 src += 16; /* skip header */ 285 286 switch (s->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 s->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 s->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(s->dev, "%*ph\n", 24, &src[1000]); 326 memcpy(dst, src, 984); 327 src += 984 + 24; 328 dst += 984; 329 dst_len += 984; 330 s->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 s->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 s->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 s->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(s->jiffies_next))) { 360 #define MSECS 10000UL 361 unsigned int msecs = jiffies_to_msecs(jiffies - 362 s->jiffies_next + msecs_to_jiffies(MSECS)); 363 unsigned int samples = s->next_sample - s->sample; 364 365 s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); 366 s->sample = s->next_sample; 367 dev_dbg(s->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_state *s = (struct msi2500_state *)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 || urb->status == -ECONNRESET || 387 urb->status == -ESHUTDOWN)) { 388 dev_dbg(s->dev, "URB (%p) unlinked %ssynchronuously\n", 389 urb, urb->status == -ENOENT ? "" : "a"); 390 return; 391 } 392 393 if (unlikely(urb->status != 0)) { 394 dev_dbg(s->dev, "called with status %d\n", urb->status); 395 /* Give up after a number of contiguous errors */ 396 if (++s->isoc_errors > MAX_ISOC_ERRORS) 397 dev_dbg(s->dev, "Too many ISOC errors, bailing out\n"); 398 goto handler_end; 399 } else { 400 /* Reset ISOC error counter. We did get here, after all. */ 401 s->isoc_errors = 0; 402 } 403 404 /* Compact data */ 405 for (i = 0; i < urb->number_of_packets; i++) { 406 void *ptr; 407 408 /* Check frame error */ 409 fstatus = urb->iso_frame_desc[i].status; 410 if (unlikely(fstatus)) { 411 dev_dbg_ratelimited(s->dev, 412 "frame=%d/%d has error %d skipping\n", 413 i, urb->number_of_packets, fstatus); 414 continue; 415 } 416 417 /* Check if that frame contains data */ 418 flen = urb->iso_frame_desc[i].actual_length; 419 if (unlikely(flen == 0)) 420 continue; 421 422 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 423 424 /* Get free framebuffer */ 425 fbuf = msi2500_get_next_fill_buf(s); 426 if (unlikely(fbuf == NULL)) { 427 s->vb_full++; 428 dev_dbg_ratelimited(s->dev, 429 "videobuf is full, %d packets dropped\n", 430 s->vb_full); 431 continue; 432 } 433 434 /* fill framebuffer */ 435 ptr = vb2_plane_vaddr(&fbuf->vb, 0); 436 flen = msi2500_convert_stream(s, ptr, iso_buf, flen); 437 vb2_set_plane_payload(&fbuf->vb, 0, flen); 438 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); 439 } 440 441 handler_end: 442 i = usb_submit_urb(urb, GFP_ATOMIC); 443 if (unlikely(i != 0)) 444 dev_dbg(s->dev, "Error (%d) re-submitting urb\n", i); 445 } 446 447 static void msi2500_iso_stop(struct msi2500_state *s) 448 { 449 int i; 450 451 dev_dbg(s->dev, "\n"); 452 453 /* Unlinking ISOC buffers one by one */ 454 for (i = 0; i < MAX_ISO_BUFS; i++) { 455 if (s->urbs[i]) { 456 dev_dbg(s->dev, "Unlinking URB %p\n", s->urbs[i]); 457 usb_kill_urb(s->urbs[i]); 458 } 459 } 460 } 461 462 static void msi2500_iso_free(struct msi2500_state *s) 463 { 464 int i; 465 466 dev_dbg(s->dev, "\n"); 467 468 /* Freeing ISOC buffers one by one */ 469 for (i = 0; i < MAX_ISO_BUFS; i++) { 470 if (s->urbs[i]) { 471 dev_dbg(s->dev, "Freeing URB\n"); 472 if (s->urbs[i]->transfer_buffer) { 473 usb_free_coherent(s->udev, 474 s->urbs[i]->transfer_buffer_length, 475 s->urbs[i]->transfer_buffer, 476 s->urbs[i]->transfer_dma); 477 } 478 usb_free_urb(s->urbs[i]); 479 s->urbs[i] = NULL; 480 } 481 } 482 } 483 484 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 485 static void msi2500_isoc_cleanup(struct msi2500_state *s) 486 { 487 dev_dbg(s->dev, "\n"); 488 489 msi2500_iso_stop(s); 490 msi2500_iso_free(s); 491 } 492 493 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 494 static int msi2500_isoc_init(struct msi2500_state *s) 495 { 496 struct urb *urb; 497 int i, j, ret; 498 499 dev_dbg(s->dev, "\n"); 500 501 s->isoc_errors = 0; 502 503 ret = usb_set_interface(s->udev, 0, 1); 504 if (ret) 505 return ret; 506 507 /* Allocate and init Isochronuous urbs */ 508 for (i = 0; i < MAX_ISO_BUFS; i++) { 509 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); 510 if (urb == NULL) { 511 dev_err(s->dev, "Failed to allocate urb %d\n", i); 512 msi2500_isoc_cleanup(s); 513 return -ENOMEM; 514 } 515 s->urbs[i] = urb; 516 dev_dbg(s->dev, "Allocated URB at 0x%p\n", urb); 517 518 urb->interval = 1; 519 urb->dev = s->udev; 520 urb->pipe = usb_rcvisocpipe(s->udev, 0x81); 521 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 522 urb->transfer_buffer = usb_alloc_coherent(s->udev, 523 ISO_BUFFER_SIZE, 524 GFP_KERNEL, &urb->transfer_dma); 525 if (urb->transfer_buffer == NULL) { 526 dev_err(s->dev, "Failed to allocate urb buffer %d\n", 527 i); 528 msi2500_isoc_cleanup(s); 529 return -ENOMEM; 530 } 531 urb->transfer_buffer_length = ISO_BUFFER_SIZE; 532 urb->complete = msi2500_isoc_handler; 533 urb->context = s; 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(s->urbs[i], GFP_KERNEL); 545 if (ret) { 546 dev_err(s->dev, "usb_submit_urb %d failed with error %d\n", 547 i, ret); 548 msi2500_isoc_cleanup(s); 549 return ret; 550 } 551 dev_dbg(s->dev, "URB 0x%p submitted.\n", s->urbs[i]); 552 } 553 554 /* All is done... */ 555 return 0; 556 } 557 558 /* Must be called with vb_queue_lock hold */ 559 static void msi2500_cleanup_queued_bufs(struct msi2500_state *s) 560 { 561 unsigned long flags; 562 563 dev_dbg(s->dev, "\n"); 564 565 spin_lock_irqsave(&s->queued_bufs_lock, flags); 566 while (!list_empty(&s->queued_bufs)) { 567 struct msi2500_frame_buf *buf; 568 569 buf = list_entry(s->queued_bufs.next, struct msi2500_frame_buf, 570 list); 571 list_del(&buf->list); 572 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 573 } 574 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 575 } 576 577 /* The user yanked out the cable... */ 578 static void msi2500_disconnect(struct usb_interface *intf) 579 { 580 struct v4l2_device *v = usb_get_intfdata(intf); 581 struct msi2500_state *s = 582 container_of(v, struct msi2500_state, v4l2_dev); 583 584 dev_dbg(s->dev, "\n"); 585 586 mutex_lock(&s->vb_queue_lock); 587 mutex_lock(&s->v4l2_lock); 588 /* No need to keep the urbs around after disconnection */ 589 s->udev = NULL; 590 v4l2_device_disconnect(&s->v4l2_dev); 591 video_unregister_device(&s->vdev); 592 spi_unregister_master(s->master); 593 mutex_unlock(&s->v4l2_lock); 594 mutex_unlock(&s->vb_queue_lock); 595 596 v4l2_device_put(&s->v4l2_dev); 597 } 598 599 static int msi2500_querycap(struct file *file, void *fh, 600 struct v4l2_capability *cap) 601 { 602 struct msi2500_state *s = video_drvdata(file); 603 604 dev_dbg(s->dev, "\n"); 605 606 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 607 strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); 608 usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); 609 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 610 V4L2_CAP_READWRITE | V4L2_CAP_TUNER; 611 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 612 return 0; 613 } 614 615 /* Videobuf2 operations */ 616 static int msi2500_queue_setup(struct vb2_queue *vq, 617 const struct v4l2_format *fmt, unsigned int *nbuffers, 618 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) 619 { 620 struct msi2500_state *s = vb2_get_drv_priv(vq); 621 622 dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers); 623 624 /* Absolute min and max number of buffers available for mmap() */ 625 *nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32); 626 *nplanes = 1; 627 sizes[0] = PAGE_ALIGN(s->buffersize); 628 dev_dbg(s->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 629 return 0; 630 } 631 632 static void msi2500_buf_queue(struct vb2_buffer *vb) 633 { 634 struct msi2500_state *s = vb2_get_drv_priv(vb->vb2_queue); 635 struct msi2500_frame_buf *buf = 636 container_of(vb, struct msi2500_frame_buf, vb); 637 unsigned long flags; 638 639 /* Check the device has not disconnected between prep and queuing */ 640 if (unlikely(!s->udev)) { 641 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 642 return; 643 } 644 645 spin_lock_irqsave(&s->queued_bufs_lock, flags); 646 list_add_tail(&buf->list, &s->queued_bufs); 647 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 648 } 649 650 #define CMD_WREG 0x41 651 #define CMD_START_STREAMING 0x43 652 #define CMD_STOP_STREAMING 0x45 653 #define CMD_READ_UNKNOW 0x48 654 655 #define msi2500_dbg_usb_control_msg(_dev, _r, _t, _v, _i, _b, _l) { \ 656 char *_direction; \ 657 if (_t & USB_DIR_IN) \ 658 _direction = "<<<"; \ 659 else \ 660 _direction = ">>>"; \ 661 dev_dbg(_dev, "%02x %02x %02x %02x %02x %02x %02x %02x %s %*ph\n", \ 662 _t, _r, _v & 0xff, _v >> 8, _i & 0xff, _i >> 8, \ 663 _l & 0xff, _l >> 8, _direction, _l, _b); \ 664 } 665 666 static int msi2500_ctrl_msg(struct msi2500_state *s, u8 cmd, u32 data) 667 { 668 int ret; 669 u8 request = cmd; 670 u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR; 671 u16 value = (data >> 0) & 0xffff; 672 u16 index = (data >> 16) & 0xffff; 673 674 msi2500_dbg_usb_control_msg(s->dev, 675 request, requesttype, value, index, NULL, 0); 676 ret = usb_control_msg(s->udev, usb_sndctrlpipe(s->udev, 0), 677 request, requesttype, value, index, NULL, 0, 2000); 678 if (ret) 679 dev_err(s->dev, "failed %d, cmd %02x, data %04x\n", 680 ret, cmd, data); 681 682 return ret; 683 } 684 685 #define F_REF 24000000 686 #define DIV_R_IN 2 687 static int msi2500_set_usb_adc(struct msi2500_state *s) 688 { 689 int ret, div_n, div_m, div_r_out, f_sr, f_vco, fract; 690 u32 reg3, reg4, reg7; 691 struct v4l2_ctrl *bandwidth_auto; 692 struct v4l2_ctrl *bandwidth; 693 694 f_sr = s->f_adc; 695 696 /* set tuner, subdev, filters according to sampling rate */ 697 bandwidth_auto = v4l2_ctrl_find(&s->hdl, 698 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 699 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 700 bandwidth = v4l2_ctrl_find(&s->hdl, 701 V4L2_CID_RF_TUNER_BANDWIDTH); 702 v4l2_ctrl_s_ctrl(bandwidth, s->f_adc); 703 } 704 705 /* select stream format */ 706 switch (s->pixelformat) { 707 case V4L2_SDR_FMT_CU8: 708 reg7 = 0x000c9407; /* 504 */ 709 break; 710 case V4L2_SDR_FMT_CU16LE: 711 reg7 = 0x00009407; /* 252 */ 712 break; 713 case V4L2_SDR_FMT_CS8: 714 reg7 = 0x000c9407; /* 504 */ 715 break; 716 case MSI2500_PIX_FMT_SDR_MSI2500_384: 717 reg7 = 0x0000a507; /* 384 */ 718 break; 719 case MSI2500_PIX_FMT_SDR_S12: 720 reg7 = 0x00008507; /* 336 */ 721 break; 722 case V4L2_SDR_FMT_CS14LE: 723 reg7 = 0x00009407; /* 252 */ 724 break; 725 default: 726 reg7 = 0x000c9407; /* 504 */ 727 break; 728 } 729 730 /* 731 * Synthesizer config is just a educated guess... 732 * 733 * [7:0] 0x03, register address 734 * [8] 1, power control 735 * [9] ?, power control 736 * [12:10] output divider 737 * [13] 0 ? 738 * [14] 0 ? 739 * [15] fractional MSB, bit 20 740 * [16:19] N 741 * [23:20] ? 742 * [24:31] 0x01 743 * 744 * output divider 745 * val div 746 * 0 - (invalid) 747 * 1 4 748 * 2 6 749 * 3 8 750 * 4 10 751 * 5 12 752 * 6 14 753 * 7 16 754 * 755 * VCO 202000000 - 720000000++ 756 */ 757 reg3 = 0x01000303; 758 reg4 = 0x00000004; 759 760 /* XXX: Filters? AGC? */ 761 if (f_sr < 6000000) 762 reg3 |= 0x1 << 20; 763 else if (f_sr < 7000000) 764 reg3 |= 0x5 << 20; 765 else if (f_sr < 8500000) 766 reg3 |= 0x9 << 20; 767 else 768 reg3 |= 0xd << 20; 769 770 for (div_r_out = 4; div_r_out < 16; div_r_out += 2) { 771 f_vco = f_sr * div_r_out * 12; 772 dev_dbg(s->dev, "div_r_out=%d f_vco=%d\n", div_r_out, f_vco); 773 if (f_vco >= 202000000) 774 break; 775 } 776 777 div_n = f_vco / (F_REF * DIV_R_IN); 778 div_m = f_vco % (F_REF * DIV_R_IN); 779 fract = 0x200000ul * div_m / (F_REF * DIV_R_IN); 780 781 reg3 |= div_n << 16; 782 reg3 |= (div_r_out / 2 - 1) << 10; 783 reg3 |= ((fract >> 20) & 0x000001) << 15; /* [20] */ 784 reg4 |= ((fract >> 0) & 0x0fffff) << 8; /* [19:0] */ 785 786 dev_dbg(s->dev, "f_sr=%d f_vco=%d div_n=%d div_m=%d div_r_out=%d reg3=%08x reg4=%08x\n", 787 f_sr, f_vco, div_n, div_m, div_r_out, reg3, reg4); 788 789 ret = msi2500_ctrl_msg(s, CMD_WREG, 0x00608008); 790 if (ret) 791 goto err; 792 793 ret = msi2500_ctrl_msg(s, CMD_WREG, 0x00000c05); 794 if (ret) 795 goto err; 796 797 ret = msi2500_ctrl_msg(s, CMD_WREG, 0x00020000); 798 if (ret) 799 goto err; 800 801 ret = msi2500_ctrl_msg(s, CMD_WREG, 0x00480102); 802 if (ret) 803 goto err; 804 805 ret = msi2500_ctrl_msg(s, CMD_WREG, 0x00f38008); 806 if (ret) 807 goto err; 808 809 ret = msi2500_ctrl_msg(s, CMD_WREG, reg7); 810 if (ret) 811 goto err; 812 813 ret = msi2500_ctrl_msg(s, CMD_WREG, reg4); 814 if (ret) 815 goto err; 816 817 ret = msi2500_ctrl_msg(s, CMD_WREG, reg3); 818 if (ret) 819 goto err; 820 err: 821 return ret; 822 } 823 824 static int msi2500_start_streaming(struct vb2_queue *vq, unsigned int count) 825 { 826 struct msi2500_state *s = vb2_get_drv_priv(vq); 827 int ret; 828 829 dev_dbg(s->dev, "\n"); 830 831 if (!s->udev) 832 return -ENODEV; 833 834 if (mutex_lock_interruptible(&s->v4l2_lock)) 835 return -ERESTARTSYS; 836 837 /* wake-up tuner */ 838 v4l2_subdev_call(s->v4l2_subdev, core, s_power, 1); 839 840 ret = msi2500_set_usb_adc(s); 841 842 ret = msi2500_isoc_init(s); 843 if (ret) 844 msi2500_cleanup_queued_bufs(s); 845 846 ret = msi2500_ctrl_msg(s, CMD_START_STREAMING, 0); 847 848 mutex_unlock(&s->v4l2_lock); 849 850 return ret; 851 } 852 853 static void msi2500_stop_streaming(struct vb2_queue *vq) 854 { 855 struct msi2500_state *s = vb2_get_drv_priv(vq); 856 857 dev_dbg(s->dev, "\n"); 858 859 mutex_lock(&s->v4l2_lock); 860 861 if (s->udev) 862 msi2500_isoc_cleanup(s); 863 864 msi2500_cleanup_queued_bufs(s); 865 866 /* according to tests, at least 700us delay is required */ 867 msleep(20); 868 if (!msi2500_ctrl_msg(s, CMD_STOP_STREAMING, 0)) { 869 /* sleep USB IF / ADC */ 870 msi2500_ctrl_msg(s, CMD_WREG, 0x01000003); 871 } 872 873 /* sleep tuner */ 874 v4l2_subdev_call(s->v4l2_subdev, core, s_power, 0); 875 876 mutex_unlock(&s->v4l2_lock); 877 } 878 879 static struct vb2_ops msi2500_vb2_ops = { 880 .queue_setup = msi2500_queue_setup, 881 .buf_queue = msi2500_buf_queue, 882 .start_streaming = msi2500_start_streaming, 883 .stop_streaming = msi2500_stop_streaming, 884 .wait_prepare = vb2_ops_wait_prepare, 885 .wait_finish = vb2_ops_wait_finish, 886 }; 887 888 static int msi2500_enum_fmt_sdr_cap(struct file *file, void *priv, 889 struct v4l2_fmtdesc *f) 890 { 891 struct msi2500_state *s = video_drvdata(file); 892 893 dev_dbg(s->dev, "index=%d\n", f->index); 894 895 if (f->index >= s->num_formats) 896 return -EINVAL; 897 898 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 899 f->pixelformat = formats[f->index].pixelformat; 900 901 return 0; 902 } 903 904 static int msi2500_g_fmt_sdr_cap(struct file *file, void *priv, 905 struct v4l2_format *f) 906 { 907 struct msi2500_state *s = video_drvdata(file); 908 909 dev_dbg(s->dev, "pixelformat fourcc %4.4s\n", 910 (char *)&s->pixelformat); 911 912 f->fmt.sdr.pixelformat = s->pixelformat; 913 f->fmt.sdr.buffersize = s->buffersize; 914 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 915 916 return 0; 917 } 918 919 static int msi2500_s_fmt_sdr_cap(struct file *file, void *priv, 920 struct v4l2_format *f) 921 { 922 struct msi2500_state *s = video_drvdata(file); 923 struct vb2_queue *q = &s->vb_queue; 924 int i; 925 926 dev_dbg(s->dev, "pixelformat fourcc %4.4s\n", 927 (char *)&f->fmt.sdr.pixelformat); 928 929 if (vb2_is_busy(q)) 930 return -EBUSY; 931 932 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 933 for (i = 0; i < s->num_formats; i++) { 934 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 935 s->pixelformat = formats[i].pixelformat; 936 s->buffersize = formats[i].buffersize; 937 f->fmt.sdr.buffersize = formats[i].buffersize; 938 return 0; 939 } 940 } 941 942 s->pixelformat = formats[0].pixelformat; 943 s->buffersize = formats[0].buffersize; 944 f->fmt.sdr.pixelformat = formats[0].pixelformat; 945 f->fmt.sdr.buffersize = formats[0].buffersize; 946 947 return 0; 948 } 949 950 static int msi2500_try_fmt_sdr_cap(struct file *file, void *priv, 951 struct v4l2_format *f) 952 { 953 struct msi2500_state *s = video_drvdata(file); 954 int i; 955 956 dev_dbg(s->dev, "pixelformat fourcc %4.4s\n", 957 (char *)&f->fmt.sdr.pixelformat); 958 959 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 960 for (i = 0; i < s->num_formats; i++) { 961 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 962 f->fmt.sdr.buffersize = formats[i].buffersize; 963 return 0; 964 } 965 } 966 967 f->fmt.sdr.pixelformat = formats[0].pixelformat; 968 f->fmt.sdr.buffersize = formats[0].buffersize; 969 970 return 0; 971 } 972 973 static int msi2500_s_tuner(struct file *file, void *priv, 974 const struct v4l2_tuner *v) 975 { 976 struct msi2500_state *s = video_drvdata(file); 977 int ret; 978 979 dev_dbg(s->dev, "index=%d\n", v->index); 980 981 if (v->index == 0) 982 ret = 0; 983 else if (v->index == 1) 984 ret = v4l2_subdev_call(s->v4l2_subdev, tuner, s_tuner, v); 985 else 986 ret = -EINVAL; 987 988 return ret; 989 } 990 991 static int msi2500_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) 992 { 993 struct msi2500_state *s = video_drvdata(file); 994 int ret; 995 996 dev_dbg(s->dev, "index=%d\n", v->index); 997 998 if (v->index == 0) { 999 strlcpy(v->name, "Mirics MSi2500", sizeof(v->name)); 1000 v->type = V4L2_TUNER_ADC; 1001 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 1002 v->rangelow = 1200000; 1003 v->rangehigh = 15000000; 1004 ret = 0; 1005 } else if (v->index == 1) { 1006 ret = v4l2_subdev_call(s->v4l2_subdev, tuner, g_tuner, v); 1007 } else { 1008 ret = -EINVAL; 1009 } 1010 1011 return ret; 1012 } 1013 1014 static int msi2500_g_frequency(struct file *file, void *priv, 1015 struct v4l2_frequency *f) 1016 { 1017 struct msi2500_state *s = video_drvdata(file); 1018 int ret = 0; 1019 1020 dev_dbg(s->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1021 1022 if (f->tuner == 0) { 1023 f->frequency = s->f_adc; 1024 ret = 0; 1025 } else if (f->tuner == 1) { 1026 f->type = V4L2_TUNER_RF; 1027 ret = v4l2_subdev_call(s->v4l2_subdev, tuner, g_frequency, f); 1028 } else { 1029 ret = -EINVAL; 1030 } 1031 1032 return ret; 1033 } 1034 1035 static int msi2500_s_frequency(struct file *file, void *priv, 1036 const struct v4l2_frequency *f) 1037 { 1038 struct msi2500_state *s = video_drvdata(file); 1039 int ret; 1040 1041 dev_dbg(s->dev, "tuner=%d type=%d frequency=%u\n", 1042 f->tuner, f->type, f->frequency); 1043 1044 if (f->tuner == 0) { 1045 s->f_adc = clamp_t(unsigned int, f->frequency, 1046 bands[0].rangelow, 1047 bands[0].rangehigh); 1048 dev_dbg(s->dev, "ADC frequency=%u Hz\n", s->f_adc); 1049 ret = msi2500_set_usb_adc(s); 1050 } else if (f->tuner == 1) { 1051 ret = v4l2_subdev_call(s->v4l2_subdev, tuner, s_frequency, f); 1052 } else { 1053 ret = -EINVAL; 1054 } 1055 1056 return ret; 1057 } 1058 1059 static int msi2500_enum_freq_bands(struct file *file, void *priv, 1060 struct v4l2_frequency_band *band) 1061 { 1062 struct msi2500_state *s = video_drvdata(file); 1063 int ret; 1064 1065 dev_dbg(s->dev, "tuner=%d type=%d index=%d\n", 1066 band->tuner, band->type, band->index); 1067 1068 if (band->tuner == 0) { 1069 if (band->index >= ARRAY_SIZE(bands)) { 1070 ret = -EINVAL; 1071 } else { 1072 *band = bands[band->index]; 1073 ret = 0; 1074 } 1075 } else if (band->tuner == 1) { 1076 ret = v4l2_subdev_call(s->v4l2_subdev, tuner, 1077 enum_freq_bands, band); 1078 } else { 1079 ret = -EINVAL; 1080 } 1081 1082 return ret; 1083 } 1084 1085 static const struct v4l2_ioctl_ops msi2500_ioctl_ops = { 1086 .vidioc_querycap = msi2500_querycap, 1087 1088 .vidioc_enum_fmt_sdr_cap = msi2500_enum_fmt_sdr_cap, 1089 .vidioc_g_fmt_sdr_cap = msi2500_g_fmt_sdr_cap, 1090 .vidioc_s_fmt_sdr_cap = msi2500_s_fmt_sdr_cap, 1091 .vidioc_try_fmt_sdr_cap = msi2500_try_fmt_sdr_cap, 1092 1093 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1094 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1095 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1096 .vidioc_querybuf = vb2_ioctl_querybuf, 1097 .vidioc_qbuf = vb2_ioctl_qbuf, 1098 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1099 1100 .vidioc_streamon = vb2_ioctl_streamon, 1101 .vidioc_streamoff = vb2_ioctl_streamoff, 1102 1103 .vidioc_g_tuner = msi2500_g_tuner, 1104 .vidioc_s_tuner = msi2500_s_tuner, 1105 1106 .vidioc_g_frequency = msi2500_g_frequency, 1107 .vidioc_s_frequency = msi2500_s_frequency, 1108 .vidioc_enum_freq_bands = msi2500_enum_freq_bands, 1109 1110 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1111 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1112 .vidioc_log_status = v4l2_ctrl_log_status, 1113 }; 1114 1115 static const struct v4l2_file_operations msi2500_fops = { 1116 .owner = THIS_MODULE, 1117 .open = v4l2_fh_open, 1118 .release = vb2_fop_release, 1119 .read = vb2_fop_read, 1120 .poll = vb2_fop_poll, 1121 .mmap = vb2_fop_mmap, 1122 .unlocked_ioctl = video_ioctl2, 1123 }; 1124 1125 static struct video_device msi2500_template = { 1126 .name = "Mirics MSi3101 SDR Dongle", 1127 .release = video_device_release_empty, 1128 .fops = &msi2500_fops, 1129 .ioctl_ops = &msi2500_ioctl_ops, 1130 }; 1131 1132 static void msi2500_video_release(struct v4l2_device *v) 1133 { 1134 struct msi2500_state *s = 1135 container_of(v, struct msi2500_state, v4l2_dev); 1136 1137 v4l2_ctrl_handler_free(&s->hdl); 1138 v4l2_device_unregister(&s->v4l2_dev); 1139 kfree(s); 1140 } 1141 1142 static int msi2500_transfer_one_message(struct spi_master *master, 1143 struct spi_message *m) 1144 { 1145 struct msi2500_state *s = spi_master_get_devdata(master); 1146 struct spi_transfer *t; 1147 int ret = 0; 1148 u32 data; 1149 1150 list_for_each_entry(t, &m->transfers, transfer_list) { 1151 dev_dbg(s->dev, "msg=%*ph\n", t->len, t->tx_buf); 1152 data = 0x09; /* reg 9 is SPI adapter */ 1153 data |= ((u8 *)t->tx_buf)[0] << 8; 1154 data |= ((u8 *)t->tx_buf)[1] << 16; 1155 data |= ((u8 *)t->tx_buf)[2] << 24; 1156 ret = msi2500_ctrl_msg(s, CMD_WREG, data); 1157 } 1158 1159 m->status = ret; 1160 spi_finalize_current_message(master); 1161 return ret; 1162 } 1163 1164 static int msi2500_probe(struct usb_interface *intf, 1165 const struct usb_device_id *id) 1166 { 1167 struct msi2500_state *s; 1168 struct v4l2_subdev *sd; 1169 struct spi_master *master; 1170 int ret; 1171 static struct spi_board_info board_info = { 1172 .modalias = "msi001", 1173 .bus_num = 0, 1174 .chip_select = 0, 1175 .max_speed_hz = 12000000, 1176 }; 1177 1178 s = kzalloc(sizeof(struct msi2500_state), GFP_KERNEL); 1179 if (s == NULL) { 1180 dev_err(&intf->dev, "Could not allocate memory for state\n"); 1181 return -ENOMEM; 1182 } 1183 1184 mutex_init(&s->v4l2_lock); 1185 mutex_init(&s->vb_queue_lock); 1186 spin_lock_init(&s->queued_bufs_lock); 1187 INIT_LIST_HEAD(&s->queued_bufs); 1188 s->dev = &intf->dev; 1189 s->udev = interface_to_usbdev(intf); 1190 s->f_adc = bands[0].rangelow; 1191 s->pixelformat = formats[0].pixelformat; 1192 s->buffersize = formats[0].buffersize; 1193 s->num_formats = NUM_FORMATS; 1194 if (!msi2500_emulated_fmt) 1195 s->num_formats -= 2; 1196 1197 /* Init videobuf2 queue structure */ 1198 s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1199 s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1200 s->vb_queue.drv_priv = s; 1201 s->vb_queue.buf_struct_size = sizeof(struct msi2500_frame_buf); 1202 s->vb_queue.ops = &msi2500_vb2_ops; 1203 s->vb_queue.mem_ops = &vb2_vmalloc_memops; 1204 s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1205 ret = vb2_queue_init(&s->vb_queue); 1206 if (ret) { 1207 dev_err(s->dev, "Could not initialize vb2 queue\n"); 1208 goto err_free_mem; 1209 } 1210 1211 /* Init video_device structure */ 1212 s->vdev = msi2500_template; 1213 s->vdev.queue = &s->vb_queue; 1214 s->vdev.queue->lock = &s->vb_queue_lock; 1215 video_set_drvdata(&s->vdev, s); 1216 1217 /* Register the v4l2_device structure */ 1218 s->v4l2_dev.release = msi2500_video_release; 1219 ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); 1220 if (ret) { 1221 dev_err(s->dev, "Failed to register v4l2-device (%d)\n", ret); 1222 goto err_free_mem; 1223 } 1224 1225 /* SPI master adapter */ 1226 master = spi_alloc_master(s->dev, 0); 1227 if (master == NULL) { 1228 ret = -ENOMEM; 1229 goto err_unregister_v4l2_dev; 1230 } 1231 1232 s->master = master; 1233 master->bus_num = 0; 1234 master->num_chipselect = 1; 1235 master->transfer_one_message = msi2500_transfer_one_message; 1236 spi_master_set_devdata(master, s); 1237 ret = spi_register_master(master); 1238 if (ret) { 1239 spi_master_put(master); 1240 goto err_unregister_v4l2_dev; 1241 } 1242 1243 /* load v4l2 subdevice */ 1244 sd = v4l2_spi_new_subdev(&s->v4l2_dev, master, &board_info); 1245 s->v4l2_subdev = sd; 1246 if (sd == NULL) { 1247 dev_err(s->dev, "cannot get v4l2 subdevice\n"); 1248 ret = -ENODEV; 1249 goto err_unregister_master; 1250 } 1251 1252 /* Register controls */ 1253 v4l2_ctrl_handler_init(&s->hdl, 0); 1254 if (s->hdl.error) { 1255 ret = s->hdl.error; 1256 dev_err(s->dev, "Could not initialize controls\n"); 1257 goto err_free_controls; 1258 } 1259 1260 /* currently all controls are from subdev */ 1261 v4l2_ctrl_add_handler(&s->hdl, sd->ctrl_handler, NULL); 1262 1263 s->v4l2_dev.ctrl_handler = &s->hdl; 1264 s->vdev.v4l2_dev = &s->v4l2_dev; 1265 s->vdev.lock = &s->v4l2_lock; 1266 1267 ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); 1268 if (ret) { 1269 dev_err(s->dev, "Failed to register as video device (%d)\n", 1270 ret); 1271 goto err_unregister_v4l2_dev; 1272 } 1273 dev_info(s->dev, "Registered as %s\n", 1274 video_device_node_name(&s->vdev)); 1275 dev_notice(s->dev, "SDR API is still slightly experimental and functionality changes may follow\n"); 1276 1277 return 0; 1278 1279 err_free_controls: 1280 v4l2_ctrl_handler_free(&s->hdl); 1281 err_unregister_master: 1282 spi_unregister_master(s->master); 1283 err_unregister_v4l2_dev: 1284 v4l2_device_unregister(&s->v4l2_dev); 1285 err_free_mem: 1286 kfree(s); 1287 return ret; 1288 } 1289 1290 /* USB device ID list */ 1291 static struct usb_device_id msi2500_id_table[] = { 1292 { USB_DEVICE(0x1df7, 0x2500) }, /* Mirics MSi3101 SDR Dongle */ 1293 { USB_DEVICE(0x2040, 0xd300) }, /* Hauppauge WinTV 133559 LF */ 1294 { } 1295 }; 1296 MODULE_DEVICE_TABLE(usb, msi2500_id_table); 1297 1298 /* USB subsystem interface */ 1299 static struct usb_driver msi2500_driver = { 1300 .name = KBUILD_MODNAME, 1301 .probe = msi2500_probe, 1302 .disconnect = msi2500_disconnect, 1303 .id_table = msi2500_id_table, 1304 }; 1305 1306 module_usb_driver(msi2500_driver); 1307 1308 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1309 MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle"); 1310 MODULE_LICENSE("GPL"); 1311