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[mirror_ubuntu-bionic-kernel.git] / drivers / media / usb / msi2500 / msi2500.c
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");
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