1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Mirics MSi2500 driver |
4 | * Mirics MSi3101 SDR Dongle driver |
5 | * |
6 | * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> |
7 | * |
8 | * That driver is somehow based of pwc driver: |
9 | * (C) 1999-2004 Nemosoft Unv. |
10 | * (C) 2004-2006 Luc Saillard (luc@saillard.org) |
11 | * (C) 2011 Hans de Goede <hdegoede@redhat.com> |
12 | */ |
13 | |
14 | #include <linux/module.h> |
15 | #include <linux/slab.h> |
16 | #include <asm/div64.h> |
17 | #include <media/v4l2-device.h> |
18 | #include <media/v4l2-ioctl.h> |
19 | #include <media/v4l2-ctrls.h> |
20 | #include <media/v4l2-event.h> |
21 | #include <linux/usb.h> |
22 | #include <media/videobuf2-v4l2.h> |
23 | #include <media/videobuf2-vmalloc.h> |
24 | #include <linux/spi/spi.h> |
25 | |
26 | static bool msi2500_emulated_fmt; |
27 | module_param_named(emulated_formats, msi2500_emulated_fmt, bool, 0644); |
28 | MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)" ); |
29 | |
30 | /* |
31 | * iConfiguration 0 |
32 | * bInterfaceNumber 0 |
33 | * bAlternateSetting 1 |
34 | * bNumEndpoints 1 |
35 | * bEndpointAddress 0x81 EP 1 IN |
36 | * bmAttributes 1 |
37 | * Transfer Type Isochronous |
38 | * wMaxPacketSize 0x1400 3x 1024 bytes |
39 | * bInterval 1 |
40 | */ |
41 | #define MAX_ISO_BUFS (8) |
42 | #define ISO_FRAMES_PER_DESC (8) |
43 | #define ISO_MAX_FRAME_SIZE (3 * 1024) |
44 | #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) |
45 | #define MAX_ISOC_ERRORS 20 |
46 | |
47 | /* |
48 | * TODO: These formats should be moved to V4L2 API. Formats are currently |
49 | * disabled from formats[] table, not visible to userspace. |
50 | */ |
51 | /* signed 12-bit */ |
52 | #define MSI2500_PIX_FMT_SDR_S12 v4l2_fourcc('D', 'S', '1', '2') |
53 | /* Mirics MSi2500 format 384 */ |
54 | #define MSI2500_PIX_FMT_SDR_MSI2500_384 v4l2_fourcc('M', '3', '8', '4') |
55 | |
56 | static const struct v4l2_frequency_band bands[] = { |
57 | { |
58 | .tuner = 0, |
59 | .type = V4L2_TUNER_ADC, |
60 | .index = 0, |
61 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
62 | .rangelow = 1200000, |
63 | .rangehigh = 15000000, |
64 | }, |
65 | }; |
66 | |
67 | /* stream formats */ |
68 | struct msi2500_format { |
69 | u32 pixelformat; |
70 | u32 buffersize; |
71 | }; |
72 | |
73 | /* format descriptions for capture and preview */ |
74 | static struct msi2500_format formats[] = { |
75 | { |
76 | .pixelformat = V4L2_SDR_FMT_CS8, |
77 | .buffersize = 3 * 1008, |
78 | #if 0 |
79 | }, { |
80 | .pixelformat = MSI2500_PIX_FMT_SDR_MSI2500_384, |
81 | }, { |
82 | .pixelformat = MSI2500_PIX_FMT_SDR_S12, |
83 | #endif |
84 | }, { |
85 | .pixelformat = V4L2_SDR_FMT_CS14LE, |
86 | .buffersize = 3 * 1008, |
87 | }, { |
88 | .pixelformat = V4L2_SDR_FMT_CU8, |
89 | .buffersize = 3 * 1008, |
90 | }, { |
91 | .pixelformat = V4L2_SDR_FMT_CU16LE, |
92 | .buffersize = 3 * 1008, |
93 | }, |
94 | }; |
95 | |
96 | static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); |
97 | |
98 | /* intermediate buffers with raw data from the USB device */ |
99 | struct msi2500_frame_buf { |
100 | /* common v4l buffer stuff -- must be first */ |
101 | struct vb2_v4l2_buffer vb; |
102 | struct list_head list; |
103 | }; |
104 | |
105 | struct msi2500_dev { |
106 | struct device *dev; |
107 | struct video_device vdev; |
108 | struct v4l2_device v4l2_dev; |
109 | struct v4l2_subdev *v4l2_subdev; |
110 | struct spi_controller *ctlr; |
111 | |
112 | /* videobuf2 queue and queued buffers list */ |
113 | struct vb2_queue vb_queue; |
114 | struct list_head queued_bufs; |
115 | spinlock_t queued_bufs_lock; /* Protects queued_bufs */ |
116 | |
117 | /* Note if taking both locks v4l2_lock must always be locked first! */ |
118 | struct mutex v4l2_lock; /* Protects everything else */ |
119 | struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ |
120 | |
121 | /* Pointer to our usb_device, will be NULL after unplug */ |
122 | struct usb_device *udev; /* Both mutexes most be hold when setting! */ |
123 | |
124 | unsigned int f_adc; |
125 | u32 pixelformat; |
126 | u32 buffersize; |
127 | unsigned int num_formats; |
128 | |
129 | unsigned int isoc_errors; /* number of contiguous ISOC errors */ |
130 | unsigned int vb_full; /* vb is full and packets dropped */ |
131 | |
132 | struct urb *urbs[MAX_ISO_BUFS]; |
133 | |
134 | /* Controls */ |
135 | struct v4l2_ctrl_handler hdl; |
136 | |
137 | u32 next_sample; /* for track lost packets */ |
138 | u32 sample; /* for sample rate calc */ |
139 | unsigned long jiffies_next; |
140 | }; |
141 | |
142 | /* Private functions */ |
143 | static struct msi2500_frame_buf *msi2500_get_next_fill_buf( |
144 | struct msi2500_dev *dev) |
145 | { |
146 | unsigned long flags; |
147 | struct msi2500_frame_buf *buf = NULL; |
148 | |
149 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
150 | if (list_empty(head: &dev->queued_bufs)) |
151 | goto leave; |
152 | |
153 | buf = list_entry(dev->queued_bufs.next, struct msi2500_frame_buf, list); |
154 | list_del(entry: &buf->list); |
155 | leave: |
156 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
157 | return buf; |
158 | } |
159 | |
160 | /* |
161 | * +=========================================================================== |
162 | * | 00-1023 | USB packet type '504' |
163 | * +=========================================================================== |
164 | * | 00- 03 | sequence number of first sample in that USB packet |
165 | * +--------------------------------------------------------------------------- |
166 | * | 04- 15 | garbage |
167 | * +--------------------------------------------------------------------------- |
168 | * | 16-1023 | samples |
169 | * +--------------------------------------------------------------------------- |
170 | * signed 8-bit sample |
171 | * 504 * 2 = 1008 samples |
172 | * |
173 | * |
174 | * +=========================================================================== |
175 | * | 00-1023 | USB packet type '384' |
176 | * +=========================================================================== |
177 | * | 00- 03 | sequence number of first sample in that USB packet |
178 | * +--------------------------------------------------------------------------- |
179 | * | 04- 15 | garbage |
180 | * +--------------------------------------------------------------------------- |
181 | * | 16- 175 | samples |
182 | * +--------------------------------------------------------------------------- |
183 | * | 176- 179 | control bits for previous samples |
184 | * +--------------------------------------------------------------------------- |
185 | * | 180- 339 | samples |
186 | * +--------------------------------------------------------------------------- |
187 | * | 340- 343 | control bits for previous samples |
188 | * +--------------------------------------------------------------------------- |
189 | * | 344- 503 | samples |
190 | * +--------------------------------------------------------------------------- |
191 | * | 504- 507 | control bits for previous samples |
192 | * +--------------------------------------------------------------------------- |
193 | * | 508- 667 | samples |
194 | * +--------------------------------------------------------------------------- |
195 | * | 668- 671 | control bits for previous samples |
196 | * +--------------------------------------------------------------------------- |
197 | * | 672- 831 | samples |
198 | * +--------------------------------------------------------------------------- |
199 | * | 832- 835 | control bits for previous samples |
200 | * +--------------------------------------------------------------------------- |
201 | * | 836- 995 | samples |
202 | * +--------------------------------------------------------------------------- |
203 | * | 996- 999 | control bits for previous samples |
204 | * +--------------------------------------------------------------------------- |
205 | * | 1000-1023 | garbage |
206 | * +--------------------------------------------------------------------------- |
207 | * |
208 | * Bytes 4 - 7 could have some meaning? |
209 | * |
210 | * Control bits for previous samples is 32-bit field, containing 16 x 2-bit |
211 | * numbers. This results one 2-bit number for 8 samples. It is likely used for |
212 | * bit shifting sample by given bits, increasing actual sampling resolution. |
213 | * Number 2 (0b10) was never seen. |
214 | * |
215 | * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes |
216 | * |
217 | * |
218 | * +=========================================================================== |
219 | * | 00-1023 | USB packet type '336' |
220 | * +=========================================================================== |
221 | * | 00- 03 | sequence number of first sample in that USB packet |
222 | * +--------------------------------------------------------------------------- |
223 | * | 04- 15 | garbage |
224 | * +--------------------------------------------------------------------------- |
225 | * | 16-1023 | samples |
226 | * +--------------------------------------------------------------------------- |
227 | * signed 12-bit sample |
228 | * |
229 | * |
230 | * +=========================================================================== |
231 | * | 00-1023 | USB packet type '252' |
232 | * +=========================================================================== |
233 | * | 00- 03 | sequence number of first sample in that USB packet |
234 | * +--------------------------------------------------------------------------- |
235 | * | 04- 15 | garbage |
236 | * +--------------------------------------------------------------------------- |
237 | * | 16-1023 | samples |
238 | * +--------------------------------------------------------------------------- |
239 | * signed 14-bit sample |
240 | */ |
241 | |
242 | static int msi2500_convert_stream(struct msi2500_dev *dev, u8 *dst, u8 *src, |
243 | unsigned int src_len) |
244 | { |
245 | unsigned int i, j, transactions, dst_len = 0; |
246 | u32 sample[3]; |
247 | |
248 | /* There could be 1-3 1024 byte transactions per packet */ |
249 | transactions = src_len / 1024; |
250 | |
251 | for (i = 0; i < transactions; i++) { |
252 | sample[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | |
253 | src[0] << 0; |
254 | if (i == 0 && dev->next_sample != sample[0]) { |
255 | dev_dbg_ratelimited(dev->dev, |
256 | "%d samples lost, %d %08x:%08x\n" , |
257 | sample[0] - dev->next_sample, |
258 | src_len, dev->next_sample, |
259 | sample[0]); |
260 | } |
261 | |
262 | /* |
263 | * Dump all unknown 'garbage' data - maybe we will discover |
264 | * someday if there is something rational... |
265 | */ |
266 | dev_dbg_ratelimited(dev->dev, "%*ph\n" , 12, &src[4]); |
267 | |
268 | src += 16; /* skip header */ |
269 | |
270 | switch (dev->pixelformat) { |
271 | case V4L2_SDR_FMT_CU8: /* 504 x IQ samples */ |
272 | { |
273 | s8 *s8src = (s8 *)src; |
274 | u8 *u8dst = (u8 *)dst; |
275 | |
276 | for (j = 0; j < 1008; j++) |
277 | *u8dst++ = *s8src++ + 128; |
278 | |
279 | src += 1008; |
280 | dst += 1008; |
281 | dst_len += 1008; |
282 | dev->next_sample = sample[i] + 504; |
283 | break; |
284 | } |
285 | case V4L2_SDR_FMT_CU16LE: /* 252 x IQ samples */ |
286 | { |
287 | s16 *s16src = (s16 *)src; |
288 | u16 *u16dst = (u16 *)dst; |
289 | struct {signed int x:14; } se; /* sign extension */ |
290 | unsigned int utmp; |
291 | |
292 | for (j = 0; j < 1008; j += 2) { |
293 | /* sign extension from 14-bit to signed int */ |
294 | se.x = *s16src++; |
295 | /* from signed int to unsigned int */ |
296 | utmp = se.x + 8192; |
297 | /* from 14-bit to 16-bit */ |
298 | *u16dst++ = utmp << 2 | utmp >> 12; |
299 | } |
300 | |
301 | src += 1008; |
302 | dst += 1008; |
303 | dst_len += 1008; |
304 | dev->next_sample = sample[i] + 252; |
305 | break; |
306 | } |
307 | case MSI2500_PIX_FMT_SDR_MSI2500_384: /* 384 x IQ samples */ |
308 | /* Dump unknown 'garbage' data */ |
309 | dev_dbg_ratelimited(dev->dev, "%*ph\n" , 24, &src[1000]); |
310 | memcpy(dst, src, 984); |
311 | src += 984 + 24; |
312 | dst += 984; |
313 | dst_len += 984; |
314 | dev->next_sample = sample[i] + 384; |
315 | break; |
316 | case V4L2_SDR_FMT_CS8: /* 504 x IQ samples */ |
317 | memcpy(dst, src, 1008); |
318 | src += 1008; |
319 | dst += 1008; |
320 | dst_len += 1008; |
321 | dev->next_sample = sample[i] + 504; |
322 | break; |
323 | case MSI2500_PIX_FMT_SDR_S12: /* 336 x IQ samples */ |
324 | memcpy(dst, src, 1008); |
325 | src += 1008; |
326 | dst += 1008; |
327 | dst_len += 1008; |
328 | dev->next_sample = sample[i] + 336; |
329 | break; |
330 | case V4L2_SDR_FMT_CS14LE: /* 252 x IQ samples */ |
331 | memcpy(dst, src, 1008); |
332 | src += 1008; |
333 | dst += 1008; |
334 | dst_len += 1008; |
335 | dev->next_sample = sample[i] + 252; |
336 | break; |
337 | default: |
338 | break; |
339 | } |
340 | } |
341 | |
342 | /* calculate sample rate and output it in 10 seconds intervals */ |
343 | if (unlikely(time_is_before_jiffies(dev->jiffies_next))) { |
344 | #define MSECS 10000UL |
345 | unsigned int msecs = jiffies_to_msecs(j: jiffies - |
346 | dev->jiffies_next + msecs_to_jiffies(MSECS)); |
347 | unsigned int samples = dev->next_sample - dev->sample; |
348 | |
349 | dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
350 | dev->sample = dev->next_sample; |
351 | dev_dbg(dev->dev, "size=%u samples=%u msecs=%u sample rate=%lu\n" , |
352 | src_len, samples, msecs, |
353 | samples * 1000UL / msecs); |
354 | } |
355 | |
356 | return dst_len; |
357 | } |
358 | |
359 | /* |
360 | * This gets called for the Isochronous pipe (stream). This is done in interrupt |
361 | * time, so it has to be fast, not crash, and not stall. Neat. |
362 | */ |
363 | static void msi2500_isoc_handler(struct urb *urb) |
364 | { |
365 | struct msi2500_dev *dev = (struct msi2500_dev *)urb->context; |
366 | int i, flen, fstatus; |
367 | unsigned char *iso_buf = NULL; |
368 | struct msi2500_frame_buf *fbuf; |
369 | |
370 | if (unlikely(urb->status == -ENOENT || |
371 | urb->status == -ECONNRESET || |
372 | urb->status == -ESHUTDOWN)) { |
373 | dev_dbg(dev->dev, "URB (%p) unlinked %ssynchronously\n" , |
374 | urb, urb->status == -ENOENT ? "" : "a" ); |
375 | return; |
376 | } |
377 | |
378 | if (unlikely(urb->status != 0)) { |
379 | dev_dbg(dev->dev, "called with status %d\n" , urb->status); |
380 | /* Give up after a number of contiguous errors */ |
381 | if (++dev->isoc_errors > MAX_ISOC_ERRORS) |
382 | dev_dbg(dev->dev, "Too many ISOC errors, bailing out\n" ); |
383 | goto handler_end; |
384 | } else { |
385 | /* Reset ISOC error counter. We did get here, after all. */ |
386 | dev->isoc_errors = 0; |
387 | } |
388 | |
389 | /* Compact data */ |
390 | for (i = 0; i < urb->number_of_packets; i++) { |
391 | void *ptr; |
392 | |
393 | /* Check frame error */ |
394 | fstatus = urb->iso_frame_desc[i].status; |
395 | if (unlikely(fstatus)) { |
396 | dev_dbg_ratelimited(dev->dev, |
397 | "frame=%d/%d has error %d skipping\n" , |
398 | i, urb->number_of_packets, fstatus); |
399 | continue; |
400 | } |
401 | |
402 | /* Check if that frame contains data */ |
403 | flen = urb->iso_frame_desc[i].actual_length; |
404 | if (unlikely(flen == 0)) |
405 | continue; |
406 | |
407 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; |
408 | |
409 | /* Get free framebuffer */ |
410 | fbuf = msi2500_get_next_fill_buf(dev); |
411 | if (unlikely(fbuf == NULL)) { |
412 | dev->vb_full++; |
413 | dev_dbg_ratelimited(dev->dev, |
414 | "video buffer is full, %d packets dropped\n" , |
415 | dev->vb_full); |
416 | continue; |
417 | } |
418 | |
419 | /* fill framebuffer */ |
420 | ptr = vb2_plane_vaddr(vb: &fbuf->vb.vb2_buf, plane_no: 0); |
421 | flen = msi2500_convert_stream(dev, dst: ptr, src: iso_buf, src_len: flen); |
422 | vb2_set_plane_payload(vb: &fbuf->vb.vb2_buf, plane_no: 0, size: flen); |
423 | vb2_buffer_done(vb: &fbuf->vb.vb2_buf, state: VB2_BUF_STATE_DONE); |
424 | } |
425 | |
426 | handler_end: |
427 | i = usb_submit_urb(urb, GFP_ATOMIC); |
428 | if (unlikely(i != 0)) |
429 | dev_dbg(dev->dev, "Error (%d) re-submitting urb\n" , i); |
430 | } |
431 | |
432 | static void msi2500_iso_stop(struct msi2500_dev *dev) |
433 | { |
434 | int i; |
435 | |
436 | dev_dbg(dev->dev, "\n" ); |
437 | |
438 | /* Unlinking ISOC buffers one by one */ |
439 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
440 | if (dev->urbs[i]) { |
441 | dev_dbg(dev->dev, "Unlinking URB %p\n" , dev->urbs[i]); |
442 | usb_kill_urb(urb: dev->urbs[i]); |
443 | } |
444 | } |
445 | } |
446 | |
447 | static void msi2500_iso_free(struct msi2500_dev *dev) |
448 | { |
449 | int i; |
450 | |
451 | dev_dbg(dev->dev, "\n" ); |
452 | |
453 | /* Freeing ISOC buffers one by one */ |
454 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
455 | if (dev->urbs[i]) { |
456 | dev_dbg(dev->dev, "Freeing URB\n" ); |
457 | if (dev->urbs[i]->transfer_buffer) { |
458 | usb_free_coherent(dev: dev->udev, |
459 | size: dev->urbs[i]->transfer_buffer_length, |
460 | addr: dev->urbs[i]->transfer_buffer, |
461 | dma: dev->urbs[i]->transfer_dma); |
462 | } |
463 | usb_free_urb(urb: dev->urbs[i]); |
464 | dev->urbs[i] = NULL; |
465 | } |
466 | } |
467 | } |
468 | |
469 | /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
470 | static void msi2500_isoc_cleanup(struct msi2500_dev *dev) |
471 | { |
472 | dev_dbg(dev->dev, "\n" ); |
473 | |
474 | msi2500_iso_stop(dev); |
475 | msi2500_iso_free(dev); |
476 | } |
477 | |
478 | /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
479 | static int msi2500_isoc_init(struct msi2500_dev *dev) |
480 | { |
481 | struct urb *urb; |
482 | int i, j, ret; |
483 | |
484 | dev_dbg(dev->dev, "\n" ); |
485 | |
486 | dev->isoc_errors = 0; |
487 | |
488 | ret = usb_set_interface(dev: dev->udev, ifnum: 0, alternate: 1); |
489 | if (ret) |
490 | return ret; |
491 | |
492 | /* Allocate and init Isochronuous urbs */ |
493 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
494 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); |
495 | if (urb == NULL) { |
496 | msi2500_isoc_cleanup(dev); |
497 | return -ENOMEM; |
498 | } |
499 | dev->urbs[i] = urb; |
500 | dev_dbg(dev->dev, "Allocated URB at 0x%p\n" , urb); |
501 | |
502 | urb->interval = 1; |
503 | urb->dev = dev->udev; |
504 | urb->pipe = usb_rcvisocpipe(dev->udev, 0x81); |
505 | urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
506 | urb->transfer_buffer = usb_alloc_coherent(dev: dev->udev, |
507 | ISO_BUFFER_SIZE, |
508 | GFP_KERNEL, dma: &urb->transfer_dma); |
509 | if (urb->transfer_buffer == NULL) { |
510 | dev_err(dev->dev, |
511 | "Failed to allocate urb buffer %d\n" , i); |
512 | msi2500_isoc_cleanup(dev); |
513 | return -ENOMEM; |
514 | } |
515 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; |
516 | urb->complete = msi2500_isoc_handler; |
517 | urb->context = dev; |
518 | urb->start_frame = 0; |
519 | urb->number_of_packets = ISO_FRAMES_PER_DESC; |
520 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { |
521 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; |
522 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; |
523 | } |
524 | } |
525 | |
526 | /* link */ |
527 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
528 | ret = usb_submit_urb(urb: dev->urbs[i], GFP_KERNEL); |
529 | if (ret) { |
530 | dev_err(dev->dev, |
531 | "usb_submit_urb %d failed with error %d\n" , |
532 | i, ret); |
533 | msi2500_isoc_cleanup(dev); |
534 | return ret; |
535 | } |
536 | dev_dbg(dev->dev, "URB 0x%p submitted.\n" , dev->urbs[i]); |
537 | } |
538 | |
539 | /* All is done... */ |
540 | return 0; |
541 | } |
542 | |
543 | /* Must be called with vb_queue_lock hold */ |
544 | static void msi2500_cleanup_queued_bufs(struct msi2500_dev *dev) |
545 | { |
546 | unsigned long flags; |
547 | |
548 | dev_dbg(dev->dev, "\n" ); |
549 | |
550 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
551 | while (!list_empty(head: &dev->queued_bufs)) { |
552 | struct msi2500_frame_buf *buf; |
553 | |
554 | buf = list_entry(dev->queued_bufs.next, |
555 | struct msi2500_frame_buf, list); |
556 | list_del(entry: &buf->list); |
557 | vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR); |
558 | } |
559 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
560 | } |
561 | |
562 | /* The user yanked out the cable... */ |
563 | static void msi2500_disconnect(struct usb_interface *intf) |
564 | { |
565 | struct v4l2_device *v = usb_get_intfdata(intf); |
566 | struct msi2500_dev *dev = |
567 | container_of(v, struct msi2500_dev, v4l2_dev); |
568 | |
569 | dev_dbg(dev->dev, "\n" ); |
570 | |
571 | mutex_lock(&dev->vb_queue_lock); |
572 | mutex_lock(&dev->v4l2_lock); |
573 | /* No need to keep the urbs around after disconnection */ |
574 | dev->udev = NULL; |
575 | v4l2_device_disconnect(v4l2_dev: &dev->v4l2_dev); |
576 | video_unregister_device(vdev: &dev->vdev); |
577 | spi_unregister_controller(ctlr: dev->ctlr); |
578 | mutex_unlock(lock: &dev->v4l2_lock); |
579 | mutex_unlock(lock: &dev->vb_queue_lock); |
580 | |
581 | v4l2_device_put(v4l2_dev: &dev->v4l2_dev); |
582 | } |
583 | |
584 | static int msi2500_querycap(struct file *file, void *fh, |
585 | struct v4l2_capability *cap) |
586 | { |
587 | struct msi2500_dev *dev = video_drvdata(file); |
588 | |
589 | dev_dbg(dev->dev, "\n" ); |
590 | |
591 | strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
592 | strscpy(cap->card, dev->vdev.name, sizeof(cap->card)); |
593 | usb_make_path(dev: dev->udev, buf: cap->bus_info, size: sizeof(cap->bus_info)); |
594 | return 0; |
595 | } |
596 | |
597 | /* Videobuf2 operations */ |
598 | static int msi2500_queue_setup(struct vb2_queue *vq, |
599 | unsigned int *nbuffers, |
600 | unsigned int *nplanes, unsigned int sizes[], |
601 | struct device *alloc_devs[]) |
602 | { |
603 | struct msi2500_dev *dev = vb2_get_drv_priv(q: vq); |
604 | |
605 | dev_dbg(dev->dev, "nbuffers=%d\n" , *nbuffers); |
606 | |
607 | /* Absolute min and max number of buffers available for mmap() */ |
608 | *nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32); |
609 | *nplanes = 1; |
610 | sizes[0] = PAGE_ALIGN(dev->buffersize); |
611 | dev_dbg(dev->dev, "nbuffers=%d sizes[0]=%d\n" , *nbuffers, sizes[0]); |
612 | return 0; |
613 | } |
614 | |
615 | static void msi2500_buf_queue(struct vb2_buffer *vb) |
616 | { |
617 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
618 | struct msi2500_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue); |
619 | struct msi2500_frame_buf *buf = container_of(vbuf, |
620 | struct msi2500_frame_buf, |
621 | vb); |
622 | unsigned long flags; |
623 | |
624 | /* Check the device has not disconnected between prep and queuing */ |
625 | if (unlikely(!dev->udev)) { |
626 | vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR); |
627 | return; |
628 | } |
629 | |
630 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
631 | list_add_tail(new: &buf->list, head: &dev->queued_bufs); |
632 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
633 | } |
634 | |
635 | #define CMD_WREG 0x41 |
636 | #define CMD_START_STREAMING 0x43 |
637 | #define CMD_STOP_STREAMING 0x45 |
638 | #define CMD_READ_UNKNOWN 0x48 |
639 | |
640 | #define msi2500_dbg_usb_control_msg(_dev, _r, _t, _v, _i, _b, _l) { \ |
641 | char *_direction; \ |
642 | if (_t & USB_DIR_IN) \ |
643 | _direction = "<<<"; \ |
644 | else \ |
645 | _direction = ">>>"; \ |
646 | dev_dbg(_dev, "%02x %02x %02x %02x %02x %02x %02x %02x %s %*ph\n", \ |
647 | _t, _r, _v & 0xff, _v >> 8, _i & 0xff, _i >> 8, \ |
648 | _l & 0xff, _l >> 8, _direction, _l, _b); \ |
649 | } |
650 | |
651 | static int msi2500_ctrl_msg(struct msi2500_dev *dev, u8 cmd, u32 data) |
652 | { |
653 | int ret; |
654 | u8 request = cmd; |
655 | u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR; |
656 | u16 value = (data >> 0) & 0xffff; |
657 | u16 index = (data >> 16) & 0xffff; |
658 | |
659 | msi2500_dbg_usb_control_msg(dev->dev, request, requesttype, |
660 | value, index, NULL, 0); |
661 | ret = usb_control_msg(dev: dev->udev, usb_sndctrlpipe(dev->udev, 0), request, |
662 | requesttype, value, index, NULL, size: 0, timeout: 2000); |
663 | if (ret) |
664 | dev_err(dev->dev, "failed %d, cmd %02x, data %04x\n" , |
665 | ret, cmd, data); |
666 | |
667 | return ret; |
668 | } |
669 | |
670 | static int msi2500_set_usb_adc(struct msi2500_dev *dev) |
671 | { |
672 | int ret; |
673 | unsigned int f_vco, f_sr, div_n, k, k_cw, div_out; |
674 | u32 reg3, reg4, reg7; |
675 | struct v4l2_ctrl *bandwidth_auto; |
676 | struct v4l2_ctrl *bandwidth; |
677 | |
678 | f_sr = dev->f_adc; |
679 | |
680 | /* set tuner, subdev, filters according to sampling rate */ |
681 | bandwidth_auto = v4l2_ctrl_find(hdl: &dev->hdl, |
682 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); |
683 | if (v4l2_ctrl_g_ctrl(ctrl: bandwidth_auto)) { |
684 | bandwidth = v4l2_ctrl_find(hdl: &dev->hdl, |
685 | V4L2_CID_RF_TUNER_BANDWIDTH); |
686 | v4l2_ctrl_s_ctrl(ctrl: bandwidth, val: dev->f_adc); |
687 | } |
688 | |
689 | /* select stream format */ |
690 | switch (dev->pixelformat) { |
691 | case V4L2_SDR_FMT_CU8: |
692 | reg7 = 0x000c9407; /* 504 */ |
693 | break; |
694 | case V4L2_SDR_FMT_CU16LE: |
695 | reg7 = 0x00009407; /* 252 */ |
696 | break; |
697 | case V4L2_SDR_FMT_CS8: |
698 | reg7 = 0x000c9407; /* 504 */ |
699 | break; |
700 | case MSI2500_PIX_FMT_SDR_MSI2500_384: |
701 | reg7 = 0x0000a507; /* 384 */ |
702 | break; |
703 | case MSI2500_PIX_FMT_SDR_S12: |
704 | reg7 = 0x00008507; /* 336 */ |
705 | break; |
706 | case V4L2_SDR_FMT_CS14LE: |
707 | reg7 = 0x00009407; /* 252 */ |
708 | break; |
709 | default: |
710 | reg7 = 0x000c9407; /* 504 */ |
711 | break; |
712 | } |
713 | |
714 | /* |
715 | * Fractional-N synthesizer |
716 | * |
717 | * +----------------------------------------+ |
718 | * v | |
719 | * Fref +----+ +-------+ +-----+ +------+ +---+ |
720 | * ------> | PD | --> | VCO | --> | /2 | ------> | /N.F | <-- | K | |
721 | * +----+ +-------+ +-----+ +------+ +---+ |
722 | * | |
723 | * | |
724 | * v |
725 | * +-------+ +-----+ Fout |
726 | * | /Rout | --> | /12 | ------> |
727 | * +-------+ +-----+ |
728 | */ |
729 | /* |
730 | * Synthesizer config is just a educated guess... |
731 | * |
732 | * [7:0] 0x03, register address |
733 | * [8] 1, power control |
734 | * [9] ?, power control |
735 | * [12:10] output divider |
736 | * [13] 0 ? |
737 | * [14] 0 ? |
738 | * [15] fractional MSB, bit 20 |
739 | * [16:19] N |
740 | * [23:20] ? |
741 | * [24:31] 0x01 |
742 | * |
743 | * output divider |
744 | * val div |
745 | * 0 - (invalid) |
746 | * 1 4 |
747 | * 2 6 |
748 | * 3 8 |
749 | * 4 10 |
750 | * 5 12 |
751 | * 6 14 |
752 | * 7 16 |
753 | * |
754 | * VCO 202000000 - 720000000++ |
755 | */ |
756 | |
757 | #define F_REF 24000000 |
758 | #define DIV_PRE_N 2 |
759 | #define DIV_LO_OUT 12 |
760 | reg3 = 0x01000303; |
761 | reg4 = 0x00000004; |
762 | |
763 | /* XXX: Filters? AGC? VCO band? */ |
764 | if (f_sr < 6000000) |
765 | reg3 |= 0x1 << 20; |
766 | else if (f_sr < 7000000) |
767 | reg3 |= 0x5 << 20; |
768 | else if (f_sr < 8500000) |
769 | reg3 |= 0x9 << 20; |
770 | else |
771 | reg3 |= 0xd << 20; |
772 | |
773 | for (div_out = 4; div_out < 16; div_out += 2) { |
774 | f_vco = f_sr * div_out * DIV_LO_OUT; |
775 | dev_dbg(dev->dev, "div_out=%u f_vco=%u\n" , div_out, f_vco); |
776 | if (f_vco >= 202000000) |
777 | break; |
778 | } |
779 | |
780 | /* Calculate PLL integer and fractional control word. */ |
781 | div_n = div_u64_rem(dividend: f_vco, DIV_PRE_N * F_REF, remainder: &k); |
782 | k_cw = div_u64(dividend: (u64) k * 0x200000, DIV_PRE_N * F_REF); |
783 | |
784 | reg3 |= div_n << 16; |
785 | reg3 |= (div_out / 2 - 1) << 10; |
786 | reg3 |= ((k_cw >> 20) & 0x000001) << 15; /* [20] */ |
787 | reg4 |= ((k_cw >> 0) & 0x0fffff) << 8; /* [19:0] */ |
788 | |
789 | dev_dbg(dev->dev, |
790 | "f_sr=%u f_vco=%u div_n=%u k=%u div_out=%u reg3=%08x reg4=%08x\n" , |
791 | f_sr, f_vco, div_n, k, div_out, reg3, reg4); |
792 | |
793 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: 0x00608008); |
794 | if (ret) |
795 | goto err; |
796 | |
797 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: 0x00000c05); |
798 | if (ret) |
799 | goto err; |
800 | |
801 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: 0x00020000); |
802 | if (ret) |
803 | goto err; |
804 | |
805 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: 0x00480102); |
806 | if (ret) |
807 | goto err; |
808 | |
809 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: 0x00f38008); |
810 | if (ret) |
811 | goto err; |
812 | |
813 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: reg7); |
814 | if (ret) |
815 | goto err; |
816 | |
817 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: reg4); |
818 | if (ret) |
819 | goto err; |
820 | |
821 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data: reg3); |
822 | err: |
823 | return ret; |
824 | } |
825 | |
826 | static int msi2500_start_streaming(struct vb2_queue *vq, unsigned int count) |
827 | { |
828 | struct msi2500_dev *dev = vb2_get_drv_priv(q: vq); |
829 | int ret; |
830 | |
831 | dev_dbg(dev->dev, "\n" ); |
832 | |
833 | if (!dev->udev) |
834 | return -ENODEV; |
835 | |
836 | if (mutex_lock_interruptible(&dev->v4l2_lock)) |
837 | return -ERESTARTSYS; |
838 | |
839 | /* wake-up tuner */ |
840 | v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); |
841 | |
842 | ret = msi2500_set_usb_adc(dev); |
843 | |
844 | ret = msi2500_isoc_init(dev); |
845 | if (ret) |
846 | msi2500_cleanup_queued_bufs(dev); |
847 | |
848 | ret = msi2500_ctrl_msg(dev, CMD_START_STREAMING, data: 0); |
849 | |
850 | mutex_unlock(lock: &dev->v4l2_lock); |
851 | |
852 | return ret; |
853 | } |
854 | |
855 | static void msi2500_stop_streaming(struct vb2_queue *vq) |
856 | { |
857 | struct msi2500_dev *dev = vb2_get_drv_priv(q: vq); |
858 | |
859 | dev_dbg(dev->dev, "\n" ); |
860 | |
861 | mutex_lock(&dev->v4l2_lock); |
862 | |
863 | if (dev->udev) |
864 | msi2500_isoc_cleanup(dev); |
865 | |
866 | msi2500_cleanup_queued_bufs(dev); |
867 | |
868 | /* according to tests, at least 700us delay is required */ |
869 | msleep(msecs: 20); |
870 | if (dev->udev && !msi2500_ctrl_msg(dev, CMD_STOP_STREAMING, data: 0)) { |
871 | /* sleep USB IF / ADC */ |
872 | msi2500_ctrl_msg(dev, CMD_WREG, data: 0x01000003); |
873 | } |
874 | |
875 | /* sleep tuner */ |
876 | v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); |
877 | |
878 | mutex_unlock(lock: &dev->v4l2_lock); |
879 | } |
880 | |
881 | static const struct vb2_ops msi2500_vb2_ops = { |
882 | .queue_setup = msi2500_queue_setup, |
883 | .buf_queue = msi2500_buf_queue, |
884 | .start_streaming = msi2500_start_streaming, |
885 | .stop_streaming = msi2500_stop_streaming, |
886 | .wait_prepare = vb2_ops_wait_prepare, |
887 | .wait_finish = vb2_ops_wait_finish, |
888 | }; |
889 | |
890 | static int msi2500_enum_fmt_sdr_cap(struct file *file, void *priv, |
891 | struct v4l2_fmtdesc *f) |
892 | { |
893 | struct msi2500_dev *dev = video_drvdata(file); |
894 | |
895 | dev_dbg(dev->dev, "index=%d\n" , f->index); |
896 | |
897 | if (f->index >= dev->num_formats) |
898 | return -EINVAL; |
899 | |
900 | f->pixelformat = formats[f->index].pixelformat; |
901 | |
902 | return 0; |
903 | } |
904 | |
905 | static int msi2500_g_fmt_sdr_cap(struct file *file, void *priv, |
906 | struct v4l2_format *f) |
907 | { |
908 | struct msi2500_dev *dev = video_drvdata(file); |
909 | |
910 | dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n" , |
911 | (char *)&dev->pixelformat); |
912 | |
913 | f->fmt.sdr.pixelformat = dev->pixelformat; |
914 | f->fmt.sdr.buffersize = dev->buffersize; |
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_dev *dev = video_drvdata(file); |
923 | struct vb2_queue *q = &dev->vb_queue; |
924 | int i; |
925 | |
926 | dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n" , |
927 | (char *)&f->fmt.sdr.pixelformat); |
928 | |
929 | if (vb2_is_busy(q)) |
930 | return -EBUSY; |
931 | |
932 | for (i = 0; i < dev->num_formats; i++) { |
933 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
934 | dev->pixelformat = formats[i].pixelformat; |
935 | dev->buffersize = formats[i].buffersize; |
936 | f->fmt.sdr.buffersize = formats[i].buffersize; |
937 | return 0; |
938 | } |
939 | } |
940 | |
941 | dev->pixelformat = formats[0].pixelformat; |
942 | dev->buffersize = formats[0].buffersize; |
943 | f->fmt.sdr.pixelformat = formats[0].pixelformat; |
944 | f->fmt.sdr.buffersize = formats[0].buffersize; |
945 | |
946 | return 0; |
947 | } |
948 | |
949 | static int msi2500_try_fmt_sdr_cap(struct file *file, void *priv, |
950 | struct v4l2_format *f) |
951 | { |
952 | struct msi2500_dev *dev = video_drvdata(file); |
953 | int i; |
954 | |
955 | dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n" , |
956 | (char *)&f->fmt.sdr.pixelformat); |
957 | |
958 | for (i = 0; i < dev->num_formats; i++) { |
959 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
960 | f->fmt.sdr.buffersize = formats[i].buffersize; |
961 | return 0; |
962 | } |
963 | } |
964 | |
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_s_tuner(struct file *file, void *priv, |
972 | const struct v4l2_tuner *v) |
973 | { |
974 | struct msi2500_dev *dev = video_drvdata(file); |
975 | int ret; |
976 | |
977 | dev_dbg(dev->dev, "index=%d\n" , v->index); |
978 | |
979 | if (v->index == 0) |
980 | ret = 0; |
981 | else if (v->index == 1) |
982 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); |
983 | else |
984 | ret = -EINVAL; |
985 | |
986 | return ret; |
987 | } |
988 | |
989 | static int msi2500_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
990 | { |
991 | struct msi2500_dev *dev = video_drvdata(file); |
992 | int ret; |
993 | |
994 | dev_dbg(dev->dev, "index=%d\n" , v->index); |
995 | |
996 | if (v->index == 0) { |
997 | strscpy(v->name, "Mirics MSi2500" , sizeof(v->name)); |
998 | v->type = V4L2_TUNER_ADC; |
999 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
1000 | v->rangelow = 1200000; |
1001 | v->rangehigh = 15000000; |
1002 | ret = 0; |
1003 | } else if (v->index == 1) { |
1004 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); |
1005 | } else { |
1006 | ret = -EINVAL; |
1007 | } |
1008 | |
1009 | return ret; |
1010 | } |
1011 | |
1012 | static int msi2500_g_frequency(struct file *file, void *priv, |
1013 | struct v4l2_frequency *f) |
1014 | { |
1015 | struct msi2500_dev *dev = video_drvdata(file); |
1016 | int ret = 0; |
1017 | |
1018 | dev_dbg(dev->dev, "tuner=%d type=%d\n" , f->tuner, f->type); |
1019 | |
1020 | if (f->tuner == 0) { |
1021 | f->frequency = dev->f_adc; |
1022 | ret = 0; |
1023 | } else if (f->tuner == 1) { |
1024 | f->type = V4L2_TUNER_RF; |
1025 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); |
1026 | } else { |
1027 | ret = -EINVAL; |
1028 | } |
1029 | |
1030 | return ret; |
1031 | } |
1032 | |
1033 | static int msi2500_s_frequency(struct file *file, void *priv, |
1034 | const struct v4l2_frequency *f) |
1035 | { |
1036 | struct msi2500_dev *dev = video_drvdata(file); |
1037 | int ret; |
1038 | |
1039 | dev_dbg(dev->dev, "tuner=%d type=%d frequency=%u\n" , |
1040 | f->tuner, f->type, f->frequency); |
1041 | |
1042 | if (f->tuner == 0) { |
1043 | dev->f_adc = clamp_t(unsigned int, f->frequency, |
1044 | bands[0].rangelow, |
1045 | bands[0].rangehigh); |
1046 | dev_dbg(dev->dev, "ADC frequency=%u Hz\n" , dev->f_adc); |
1047 | ret = msi2500_set_usb_adc(dev); |
1048 | } else if (f->tuner == 1) { |
1049 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); |
1050 | } else { |
1051 | ret = -EINVAL; |
1052 | } |
1053 | |
1054 | return ret; |
1055 | } |
1056 | |
1057 | static int msi2500_enum_freq_bands(struct file *file, void *priv, |
1058 | struct v4l2_frequency_band *band) |
1059 | { |
1060 | struct msi2500_dev *dev = video_drvdata(file); |
1061 | int ret; |
1062 | |
1063 | dev_dbg(dev->dev, "tuner=%d type=%d index=%d\n" , |
1064 | band->tuner, band->type, band->index); |
1065 | |
1066 | if (band->tuner == 0) { |
1067 | if (band->index >= ARRAY_SIZE(bands)) { |
1068 | ret = -EINVAL; |
1069 | } else { |
1070 | *band = bands[band->index]; |
1071 | ret = 0; |
1072 | } |
1073 | } else if (band->tuner == 1) { |
1074 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, |
1075 | enum_freq_bands, band); |
1076 | } else { |
1077 | ret = -EINVAL; |
1078 | } |
1079 | |
1080 | return ret; |
1081 | } |
1082 | |
1083 | static const struct v4l2_ioctl_ops msi2500_ioctl_ops = { |
1084 | .vidioc_querycap = msi2500_querycap, |
1085 | |
1086 | .vidioc_enum_fmt_sdr_cap = msi2500_enum_fmt_sdr_cap, |
1087 | .vidioc_g_fmt_sdr_cap = msi2500_g_fmt_sdr_cap, |
1088 | .vidioc_s_fmt_sdr_cap = msi2500_s_fmt_sdr_cap, |
1089 | .vidioc_try_fmt_sdr_cap = msi2500_try_fmt_sdr_cap, |
1090 | |
1091 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
1092 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
1093 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
1094 | .vidioc_querybuf = vb2_ioctl_querybuf, |
1095 | .vidioc_qbuf = vb2_ioctl_qbuf, |
1096 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
1097 | |
1098 | .vidioc_streamon = vb2_ioctl_streamon, |
1099 | .vidioc_streamoff = vb2_ioctl_streamoff, |
1100 | |
1101 | .vidioc_g_tuner = msi2500_g_tuner, |
1102 | .vidioc_s_tuner = msi2500_s_tuner, |
1103 | |
1104 | .vidioc_g_frequency = msi2500_g_frequency, |
1105 | .vidioc_s_frequency = msi2500_s_frequency, |
1106 | .vidioc_enum_freq_bands = msi2500_enum_freq_bands, |
1107 | |
1108 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
1109 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
1110 | .vidioc_log_status = v4l2_ctrl_log_status, |
1111 | }; |
1112 | |
1113 | static const struct v4l2_file_operations msi2500_fops = { |
1114 | .owner = THIS_MODULE, |
1115 | .open = v4l2_fh_open, |
1116 | .release = vb2_fop_release, |
1117 | .read = vb2_fop_read, |
1118 | .poll = vb2_fop_poll, |
1119 | .mmap = vb2_fop_mmap, |
1120 | .unlocked_ioctl = video_ioctl2, |
1121 | }; |
1122 | |
1123 | static const struct video_device msi2500_template = { |
1124 | .name = "Mirics MSi3101 SDR Dongle" , |
1125 | .release = video_device_release_empty, |
1126 | .fops = &msi2500_fops, |
1127 | .ioctl_ops = &msi2500_ioctl_ops, |
1128 | }; |
1129 | |
1130 | static void msi2500_video_release(struct v4l2_device *v) |
1131 | { |
1132 | struct msi2500_dev *dev = container_of(v, struct msi2500_dev, v4l2_dev); |
1133 | |
1134 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1135 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1136 | kfree(objp: dev); |
1137 | } |
1138 | |
1139 | static int msi2500_transfer_one_message(struct spi_controller *ctlr, |
1140 | struct spi_message *m) |
1141 | { |
1142 | struct msi2500_dev *dev = spi_controller_get_devdata(ctlr); |
1143 | struct spi_transfer *t; |
1144 | int ret = 0; |
1145 | u32 data; |
1146 | |
1147 | list_for_each_entry(t, &m->transfers, transfer_list) { |
1148 | dev_dbg(dev->dev, "msg=%*ph\n" , t->len, t->tx_buf); |
1149 | data = 0x09; /* reg 9 is SPI adapter */ |
1150 | data |= ((u8 *)t->tx_buf)[0] << 8; |
1151 | data |= ((u8 *)t->tx_buf)[1] << 16; |
1152 | data |= ((u8 *)t->tx_buf)[2] << 24; |
1153 | ret = msi2500_ctrl_msg(dev, CMD_WREG, data); |
1154 | } |
1155 | |
1156 | m->status = ret; |
1157 | spi_finalize_current_message(ctlr); |
1158 | return ret; |
1159 | } |
1160 | |
1161 | static int msi2500_probe(struct usb_interface *intf, |
1162 | const struct usb_device_id *id) |
1163 | { |
1164 | struct msi2500_dev *dev; |
1165 | struct v4l2_subdev *sd; |
1166 | struct spi_controller *ctlr; |
1167 | int ret; |
1168 | static struct spi_board_info board_info = { |
1169 | .modalias = "msi001" , |
1170 | .bus_num = 0, |
1171 | .chip_select = 0, |
1172 | .max_speed_hz = 12000000, |
1173 | }; |
1174 | |
1175 | dev = kzalloc(size: sizeof(*dev), GFP_KERNEL); |
1176 | if (!dev) { |
1177 | ret = -ENOMEM; |
1178 | goto err; |
1179 | } |
1180 | |
1181 | mutex_init(&dev->v4l2_lock); |
1182 | mutex_init(&dev->vb_queue_lock); |
1183 | spin_lock_init(&dev->queued_bufs_lock); |
1184 | INIT_LIST_HEAD(list: &dev->queued_bufs); |
1185 | dev->dev = &intf->dev; |
1186 | dev->udev = interface_to_usbdev(intf); |
1187 | dev->f_adc = bands[0].rangelow; |
1188 | dev->pixelformat = formats[0].pixelformat; |
1189 | dev->buffersize = formats[0].buffersize; |
1190 | dev->num_formats = NUM_FORMATS; |
1191 | if (!msi2500_emulated_fmt) |
1192 | dev->num_formats -= 2; |
1193 | |
1194 | /* Init videobuf2 queue structure */ |
1195 | dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; |
1196 | dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
1197 | dev->vb_queue.drv_priv = dev; |
1198 | dev->vb_queue.buf_struct_size = sizeof(struct msi2500_frame_buf); |
1199 | dev->vb_queue.ops = &msi2500_vb2_ops; |
1200 | dev->vb_queue.mem_ops = &vb2_vmalloc_memops; |
1201 | dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
1202 | ret = vb2_queue_init(q: &dev->vb_queue); |
1203 | if (ret) { |
1204 | dev_err(dev->dev, "Could not initialize vb2 queue\n" ); |
1205 | goto err_free_mem; |
1206 | } |
1207 | |
1208 | /* Init video_device structure */ |
1209 | dev->vdev = msi2500_template; |
1210 | dev->vdev.queue = &dev->vb_queue; |
1211 | dev->vdev.queue->lock = &dev->vb_queue_lock; |
1212 | video_set_drvdata(vdev: &dev->vdev, data: dev); |
1213 | |
1214 | /* Register the v4l2_device structure */ |
1215 | dev->v4l2_dev.release = msi2500_video_release; |
1216 | ret = v4l2_device_register(dev: &intf->dev, v4l2_dev: &dev->v4l2_dev); |
1217 | if (ret) { |
1218 | dev_err(dev->dev, "Failed to register v4l2-device (%d)\n" , ret); |
1219 | goto err_free_mem; |
1220 | } |
1221 | |
1222 | /* SPI master adapter */ |
1223 | ctlr = spi_alloc_master(host: dev->dev, size: 0); |
1224 | if (ctlr == NULL) { |
1225 | ret = -ENOMEM; |
1226 | goto err_unregister_v4l2_dev; |
1227 | } |
1228 | |
1229 | dev->ctlr = ctlr; |
1230 | ctlr->bus_num = -1; |
1231 | ctlr->num_chipselect = 1; |
1232 | ctlr->transfer_one_message = msi2500_transfer_one_message; |
1233 | spi_controller_set_devdata(ctlr, data: dev); |
1234 | ret = spi_register_controller(ctlr); |
1235 | if (ret) { |
1236 | spi_controller_put(ctlr); |
1237 | goto err_unregister_v4l2_dev; |
1238 | } |
1239 | |
1240 | /* load v4l2 subdevice */ |
1241 | sd = v4l2_spi_new_subdev(v4l2_dev: &dev->v4l2_dev, ctlr, info: &board_info); |
1242 | dev->v4l2_subdev = sd; |
1243 | if (sd == NULL) { |
1244 | dev_err(dev->dev, "cannot get v4l2 subdevice\n" ); |
1245 | ret = -ENODEV; |
1246 | goto err_unregister_controller; |
1247 | } |
1248 | |
1249 | /* Register controls */ |
1250 | v4l2_ctrl_handler_init(&dev->hdl, 0); |
1251 | if (dev->hdl.error) { |
1252 | ret = dev->hdl.error; |
1253 | dev_err(dev->dev, "Could not initialize controls\n" ); |
1254 | goto err_free_controls; |
1255 | } |
1256 | |
1257 | /* currently all controls are from subdev */ |
1258 | v4l2_ctrl_add_handler(hdl: &dev->hdl, add: sd->ctrl_handler, NULL, from_other_dev: true); |
1259 | |
1260 | dev->v4l2_dev.ctrl_handler = &dev->hdl; |
1261 | dev->vdev.v4l2_dev = &dev->v4l2_dev; |
1262 | dev->vdev.lock = &dev->v4l2_lock; |
1263 | dev->vdev.device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | |
1264 | V4L2_CAP_READWRITE | V4L2_CAP_TUNER; |
1265 | |
1266 | ret = video_register_device(vdev: &dev->vdev, type: VFL_TYPE_SDR, nr: -1); |
1267 | if (ret) { |
1268 | dev_err(dev->dev, |
1269 | "Failed to register as video device (%d)\n" , ret); |
1270 | goto err_unregister_v4l2_dev; |
1271 | } |
1272 | dev_info(dev->dev, "Registered as %s\n" , |
1273 | video_device_node_name(&dev->vdev)); |
1274 | dev_notice(dev->dev, |
1275 | "SDR API is still slightly experimental and functionality changes may follow\n" ); |
1276 | return 0; |
1277 | err_free_controls: |
1278 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1279 | err_unregister_controller: |
1280 | spi_unregister_controller(ctlr: dev->ctlr); |
1281 | err_unregister_v4l2_dev: |
1282 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1283 | err_free_mem: |
1284 | kfree(objp: dev); |
1285 | err: |
1286 | return ret; |
1287 | } |
1288 | |
1289 | /* USB device ID list */ |
1290 | static const struct usb_device_id msi2500_id_table[] = { |
1291 | {USB_DEVICE(0x1df7, 0x2500)}, /* Mirics MSi3101 SDR Dongle */ |
1292 | {USB_DEVICE(0x2040, 0xd300)}, /* Hauppauge WinTV 133559 LF */ |
1293 | {} |
1294 | }; |
1295 | MODULE_DEVICE_TABLE(usb, msi2500_id_table); |
1296 | |
1297 | /* USB subsystem interface */ |
1298 | static struct usb_driver msi2500_driver = { |
1299 | .name = KBUILD_MODNAME, |
1300 | .probe = msi2500_probe, |
1301 | .disconnect = msi2500_disconnect, |
1302 | .id_table = msi2500_id_table, |
1303 | }; |
1304 | |
1305 | module_usb_driver(msi2500_driver); |
1306 | |
1307 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>" ); |
1308 | MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle" ); |
1309 | MODULE_LICENSE("GPL" ); |
1310 | |