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634fe503 AP |
1 | /* |
2 | * AirSpy SDR driver | |
3 | * | |
4 | * Copyright (C) 2014 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 | ||
17 | #include <linux/module.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/usb.h> | |
20 | #include <media/v4l2-device.h> | |
21 | #include <media/v4l2-ioctl.h> | |
22 | #include <media/v4l2-ctrls.h> | |
23 | #include <media/v4l2-event.h> | |
2d700715 | 24 | #include <media/videobuf2-v4l2.h> |
634fe503 AP |
25 | #include <media/videobuf2-vmalloc.h> |
26 | ||
27 | /* AirSpy USB API commands (from AirSpy Library) */ | |
28 | enum { | |
29 | CMD_INVALID = 0x00, | |
30 | CMD_RECEIVER_MODE = 0x01, | |
31 | CMD_SI5351C_WRITE = 0x02, | |
32 | CMD_SI5351C_READ = 0x03, | |
33 | CMD_R820T_WRITE = 0x04, | |
34 | CMD_R820T_READ = 0x05, | |
35 | CMD_SPIFLASH_ERASE = 0x06, | |
36 | CMD_SPIFLASH_WRITE = 0x07, | |
37 | CMD_SPIFLASH_READ = 0x08, | |
38 | CMD_BOARD_ID_READ = 0x09, | |
39 | CMD_VERSION_STRING_READ = 0x0a, | |
40 | CMD_BOARD_PARTID_SERIALNO_READ = 0x0b, | |
41 | CMD_SET_SAMPLE_RATE = 0x0c, | |
42 | CMD_SET_FREQ = 0x0d, | |
43 | CMD_SET_LNA_GAIN = 0x0e, | |
44 | CMD_SET_MIXER_GAIN = 0x0f, | |
45 | CMD_SET_VGA_GAIN = 0x10, | |
46 | CMD_SET_LNA_AGC = 0x11, | |
47 | CMD_SET_MIXER_AGC = 0x12, | |
48 | CMD_SET_PACKING = 0x13, | |
49 | }; | |
50 | ||
51 | /* | |
52 | * bEndpointAddress 0x81 EP 1 IN | |
53 | * Transfer Type Bulk | |
54 | * wMaxPacketSize 0x0200 1x 512 bytes | |
55 | */ | |
56 | #define MAX_BULK_BUFS (6) | |
57 | #define BULK_BUFFER_SIZE (128 * 512) | |
58 | ||
59 | static const struct v4l2_frequency_band bands[] = { | |
60 | { | |
61 | .tuner = 0, | |
62 | .type = V4L2_TUNER_ADC, | |
63 | .index = 0, | |
64 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, | |
65 | .rangelow = 20000000, | |
eb83eab7 | 66 | .rangehigh = 20000000, |
634fe503 AP |
67 | }, |
68 | }; | |
69 | ||
70 | static const struct v4l2_frequency_band bands_rf[] = { | |
71 | { | |
72 | .tuner = 1, | |
73 | .type = V4L2_TUNER_RF, | |
74 | .index = 0, | |
75 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, | |
76 | .rangelow = 24000000, | |
77 | .rangehigh = 1750000000, | |
78 | }, | |
79 | }; | |
80 | ||
81 | /* stream formats */ | |
82 | struct airspy_format { | |
83 | char *name; | |
84 | u32 pixelformat; | |
1b303e1a | 85 | u32 buffersize; |
634fe503 AP |
86 | }; |
87 | ||
88 | /* format descriptions for capture and preview */ | |
89 | static struct airspy_format formats[] = { | |
90 | { | |
91 | .name = "Real U12LE", | |
1b303e1a AP |
92 | .pixelformat = V4L2_SDR_FMT_RU12LE, |
93 | .buffersize = BULK_BUFFER_SIZE, | |
634fe503 AP |
94 | }, |
95 | }; | |
96 | ||
97 | static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); | |
98 | ||
99 | /* intermediate buffers with raw data from the USB device */ | |
100 | struct airspy_frame_buf { | |
2d700715 JS |
101 | /* common v4l buffer stuff -- must be first */ |
102 | struct vb2_v4l2_buffer vb; | |
634fe503 AP |
103 | struct list_head list; |
104 | }; | |
105 | ||
106 | struct airspy { | |
f6f7b58e MCC |
107 | #define POWER_ON 1 |
108 | #define USB_STATE_URB_BUF 2 | |
634fe503 AP |
109 | unsigned long flags; |
110 | ||
617123ae | 111 | struct device *dev; |
634fe503 AP |
112 | struct usb_device *udev; |
113 | struct video_device vdev; | |
114 | struct v4l2_device v4l2_dev; | |
115 | ||
116 | /* videobuf2 queue and queued buffers list */ | |
117 | struct vb2_queue vb_queue; | |
118 | struct list_head queued_bufs; | |
119 | spinlock_t queued_bufs_lock; /* Protects queued_bufs */ | |
120 | unsigned sequence; /* Buffer sequence counter */ | |
121 | unsigned int vb_full; /* vb is full and packets dropped */ | |
122 | ||
123 | /* Note if taking both locks v4l2_lock must always be locked first! */ | |
124 | struct mutex v4l2_lock; /* Protects everything else */ | |
125 | struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ | |
126 | ||
127 | struct urb *urb_list[MAX_BULK_BUFS]; | |
128 | int buf_num; | |
129 | unsigned long buf_size; | |
130 | u8 *buf_list[MAX_BULK_BUFS]; | |
131 | dma_addr_t dma_addr[MAX_BULK_BUFS]; | |
132 | int urbs_initialized; | |
133 | int urbs_submitted; | |
134 | ||
135 | /* USB control message buffer */ | |
aa0850e1 | 136 | #define BUF_SIZE 128 |
634fe503 AP |
137 | u8 buf[BUF_SIZE]; |
138 | ||
139 | /* Current configuration */ | |
140 | unsigned int f_adc; | |
141 | unsigned int f_rf; | |
142 | u32 pixelformat; | |
1b303e1a | 143 | u32 buffersize; |
634fe503 AP |
144 | |
145 | /* Controls */ | |
146 | struct v4l2_ctrl_handler hdl; | |
147 | struct v4l2_ctrl *lna_gain_auto; | |
148 | struct v4l2_ctrl *lna_gain; | |
149 | struct v4l2_ctrl *mixer_gain_auto; | |
150 | struct v4l2_ctrl *mixer_gain; | |
151 | struct v4l2_ctrl *if_gain; | |
152 | ||
153 | /* Sample rate calc */ | |
154 | unsigned long jiffies_next; | |
155 | unsigned int sample; | |
156 | unsigned int sample_measured; | |
157 | }; | |
158 | ||
617123ae | 159 | #define airspy_dbg_usb_control_msg(_dev, _r, _t, _v, _i, _b, _l) { \ |
634fe503 AP |
160 | char *_direction; \ |
161 | if (_t & USB_DIR_IN) \ | |
162 | _direction = "<<<"; \ | |
163 | else \ | |
164 | _direction = ">>>"; \ | |
617123ae AP |
165 | dev_dbg(_dev, "%02x %02x %02x %02x %02x %02x %02x %02x %s %*ph\n", \ |
166 | _t, _r, _v & 0xff, _v >> 8, _i & 0xff, _i >> 8, \ | |
167 | _l & 0xff, _l >> 8, _direction, _l, _b); \ | |
634fe503 AP |
168 | } |
169 | ||
170 | /* execute firmware command */ | |
171 | static int airspy_ctrl_msg(struct airspy *s, u8 request, u16 value, u16 index, | |
172 | u8 *data, u16 size) | |
173 | { | |
174 | int ret; | |
175 | unsigned int pipe; | |
176 | u8 requesttype; | |
177 | ||
178 | switch (request) { | |
179 | case CMD_RECEIVER_MODE: | |
180 | case CMD_SET_FREQ: | |
181 | pipe = usb_sndctrlpipe(s->udev, 0); | |
182 | requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT); | |
183 | break; | |
184 | case CMD_BOARD_ID_READ: | |
185 | case CMD_VERSION_STRING_READ: | |
186 | case CMD_BOARD_PARTID_SERIALNO_READ: | |
187 | case CMD_SET_LNA_GAIN: | |
188 | case CMD_SET_MIXER_GAIN: | |
189 | case CMD_SET_VGA_GAIN: | |
190 | case CMD_SET_LNA_AGC: | |
191 | case CMD_SET_MIXER_AGC: | |
192 | pipe = usb_rcvctrlpipe(s->udev, 0); | |
193 | requesttype = (USB_TYPE_VENDOR | USB_DIR_IN); | |
194 | break; | |
195 | default: | |
617123ae | 196 | dev_err(s->dev, "Unknown command %02x\n", request); |
634fe503 AP |
197 | ret = -EINVAL; |
198 | goto err; | |
199 | } | |
200 | ||
201 | /* write request */ | |
202 | if (!(requesttype & USB_DIR_IN)) | |
203 | memcpy(s->buf, data, size); | |
204 | ||
205 | ret = usb_control_msg(s->udev, pipe, request, requesttype, value, | |
206 | index, s->buf, size, 1000); | |
617123ae | 207 | airspy_dbg_usb_control_msg(s->dev, request, requesttype, value, |
634fe503 AP |
208 | index, s->buf, size); |
209 | if (ret < 0) { | |
617123ae | 210 | dev_err(s->dev, "usb_control_msg() failed %d request %02x\n", |
634fe503 AP |
211 | ret, request); |
212 | goto err; | |
213 | } | |
214 | ||
215 | /* read request */ | |
216 | if (requesttype & USB_DIR_IN) | |
217 | memcpy(data, s->buf, size); | |
218 | ||
219 | return 0; | |
220 | err: | |
221 | return ret; | |
222 | } | |
223 | ||
224 | /* Private functions */ | |
225 | static struct airspy_frame_buf *airspy_get_next_fill_buf(struct airspy *s) | |
226 | { | |
8880f2cb | 227 | unsigned long flags; |
634fe503 AP |
228 | struct airspy_frame_buf *buf = NULL; |
229 | ||
230 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
231 | if (list_empty(&s->queued_bufs)) | |
232 | goto leave; | |
233 | ||
234 | buf = list_entry(s->queued_bufs.next, | |
235 | struct airspy_frame_buf, list); | |
236 | list_del(&buf->list); | |
237 | leave: | |
238 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
239 | return buf; | |
240 | } | |
241 | ||
242 | static unsigned int airspy_convert_stream(struct airspy *s, | |
243 | void *dst, void *src, unsigned int src_len) | |
244 | { | |
245 | unsigned int dst_len; | |
246 | ||
247 | if (s->pixelformat == V4L2_SDR_FMT_RU12LE) { | |
248 | memcpy(dst, src, src_len); | |
249 | dst_len = src_len; | |
250 | } else { | |
251 | dst_len = 0; | |
252 | } | |
253 | ||
b8843c79 | 254 | /* calculate sample rate and output it in 10 seconds intervals */ |
634fe503 AP |
255 | if (unlikely(time_is_before_jiffies(s->jiffies_next))) { |
256 | #define MSECS 10000UL | |
b8843c79 AP |
257 | unsigned int msecs = jiffies_to_msecs(jiffies - |
258 | s->jiffies_next + msecs_to_jiffies(MSECS)); | |
634fe503 | 259 | unsigned int samples = s->sample - s->sample_measured; |
7057005d | 260 | |
634fe503 AP |
261 | s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
262 | s->sample_measured = s->sample; | |
b8843c79 AP |
263 | dev_dbg(s->dev, "slen=%u samples=%u msecs=%u sample rate=%lu\n", |
264 | src_len, samples, msecs, | |
265 | samples * 1000UL / msecs); | |
634fe503 AP |
266 | } |
267 | ||
268 | /* total number of samples */ | |
269 | s->sample += src_len / 2; | |
270 | ||
271 | return dst_len; | |
272 | } | |
273 | ||
274 | /* | |
275 | * This gets called for the bulk stream pipe. This is done in interrupt | |
276 | * time, so it has to be fast, not crash, and not stall. Neat. | |
277 | */ | |
278 | static void airspy_urb_complete(struct urb *urb) | |
279 | { | |
280 | struct airspy *s = urb->context; | |
281 | struct airspy_frame_buf *fbuf; | |
282 | ||
617123ae AP |
283 | dev_dbg_ratelimited(s->dev, "status=%d length=%d/%d errors=%d\n", |
284 | urb->status, urb->actual_length, | |
634fe503 AP |
285 | urb->transfer_buffer_length, urb->error_count); |
286 | ||
287 | switch (urb->status) { | |
288 | case 0: /* success */ | |
289 | case -ETIMEDOUT: /* NAK */ | |
290 | break; | |
291 | case -ECONNRESET: /* kill */ | |
292 | case -ENOENT: | |
293 | case -ESHUTDOWN: | |
294 | return; | |
295 | default: /* error */ | |
617123ae | 296 | dev_err_ratelimited(s->dev, "URB failed %d\n", urb->status); |
634fe503 AP |
297 | break; |
298 | } | |
299 | ||
300 | if (likely(urb->actual_length > 0)) { | |
301 | void *ptr; | |
302 | unsigned int len; | |
303 | /* get free framebuffer */ | |
304 | fbuf = airspy_get_next_fill_buf(s); | |
305 | if (unlikely(fbuf == NULL)) { | |
306 | s->vb_full++; | |
617123ae | 307 | dev_notice_ratelimited(s->dev, |
634fe503 AP |
308 | "videobuf is full, %d packets dropped\n", |
309 | s->vb_full); | |
310 | goto skip; | |
311 | } | |
312 | ||
313 | /* fill framebuffer */ | |
2d700715 | 314 | ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0); |
634fe503 AP |
315 | len = airspy_convert_stream(s, ptr, urb->transfer_buffer, |
316 | urb->actual_length); | |
2d700715 | 317 | vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len); |
d6dd645e | 318 | fbuf->vb.vb2_buf.timestamp = ktime_get_ns(); |
2d700715 JS |
319 | fbuf->vb.sequence = s->sequence++; |
320 | vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); | |
634fe503 AP |
321 | } |
322 | skip: | |
323 | usb_submit_urb(urb, GFP_ATOMIC); | |
324 | } | |
325 | ||
326 | static int airspy_kill_urbs(struct airspy *s) | |
327 | { | |
328 | int i; | |
329 | ||
330 | for (i = s->urbs_submitted - 1; i >= 0; i--) { | |
617123ae | 331 | dev_dbg(s->dev, "kill urb=%d\n", i); |
634fe503 AP |
332 | /* stop the URB */ |
333 | usb_kill_urb(s->urb_list[i]); | |
334 | } | |
335 | s->urbs_submitted = 0; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | static int airspy_submit_urbs(struct airspy *s) | |
341 | { | |
342 | int i, ret; | |
343 | ||
344 | for (i = 0; i < s->urbs_initialized; i++) { | |
617123ae | 345 | dev_dbg(s->dev, "submit urb=%d\n", i); |
634fe503 AP |
346 | ret = usb_submit_urb(s->urb_list[i], GFP_ATOMIC); |
347 | if (ret) { | |
617123ae | 348 | dev_err(s->dev, "Could not submit URB no. %d - get them all back\n", |
634fe503 AP |
349 | i); |
350 | airspy_kill_urbs(s); | |
351 | return ret; | |
352 | } | |
353 | s->urbs_submitted++; | |
354 | } | |
355 | ||
356 | return 0; | |
357 | } | |
358 | ||
359 | static int airspy_free_stream_bufs(struct airspy *s) | |
360 | { | |
f6f7b58e | 361 | if (test_bit(USB_STATE_URB_BUF, &s->flags)) { |
634fe503 AP |
362 | while (s->buf_num) { |
363 | s->buf_num--; | |
617123ae | 364 | dev_dbg(s->dev, "free buf=%d\n", s->buf_num); |
634fe503 AP |
365 | usb_free_coherent(s->udev, s->buf_size, |
366 | s->buf_list[s->buf_num], | |
367 | s->dma_addr[s->buf_num]); | |
368 | } | |
369 | } | |
f6f7b58e | 370 | clear_bit(USB_STATE_URB_BUF, &s->flags); |
634fe503 AP |
371 | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static int airspy_alloc_stream_bufs(struct airspy *s) | |
376 | { | |
377 | s->buf_num = 0; | |
378 | s->buf_size = BULK_BUFFER_SIZE; | |
379 | ||
617123ae AP |
380 | dev_dbg(s->dev, "all in all I will use %u bytes for streaming\n", |
381 | MAX_BULK_BUFS * BULK_BUFFER_SIZE); | |
634fe503 AP |
382 | |
383 | for (s->buf_num = 0; s->buf_num < MAX_BULK_BUFS; s->buf_num++) { | |
384 | s->buf_list[s->buf_num] = usb_alloc_coherent(s->udev, | |
385 | BULK_BUFFER_SIZE, GFP_ATOMIC, | |
386 | &s->dma_addr[s->buf_num]); | |
387 | if (!s->buf_list[s->buf_num]) { | |
617123ae | 388 | dev_dbg(s->dev, "alloc buf=%d failed\n", s->buf_num); |
634fe503 AP |
389 | airspy_free_stream_bufs(s); |
390 | return -ENOMEM; | |
391 | } | |
392 | ||
617123ae | 393 | dev_dbg(s->dev, "alloc buf=%d %p (dma %llu)\n", s->buf_num, |
634fe503 AP |
394 | s->buf_list[s->buf_num], |
395 | (long long)s->dma_addr[s->buf_num]); | |
f6f7b58e | 396 | set_bit(USB_STATE_URB_BUF, &s->flags); |
634fe503 AP |
397 | } |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static int airspy_free_urbs(struct airspy *s) | |
403 | { | |
404 | int i; | |
405 | ||
406 | airspy_kill_urbs(s); | |
407 | ||
408 | for (i = s->urbs_initialized - 1; i >= 0; i--) { | |
409 | if (s->urb_list[i]) { | |
617123ae | 410 | dev_dbg(s->dev, "free urb=%d\n", i); |
634fe503 AP |
411 | /* free the URBs */ |
412 | usb_free_urb(s->urb_list[i]); | |
413 | } | |
414 | } | |
415 | s->urbs_initialized = 0; | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | static int airspy_alloc_urbs(struct airspy *s) | |
421 | { | |
422 | int i, j; | |
423 | ||
424 | /* allocate the URBs */ | |
425 | for (i = 0; i < MAX_BULK_BUFS; i++) { | |
617123ae | 426 | dev_dbg(s->dev, "alloc urb=%d\n", i); |
634fe503 AP |
427 | s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC); |
428 | if (!s->urb_list[i]) { | |
634fe503 AP |
429 | for (j = 0; j < i; j++) |
430 | usb_free_urb(s->urb_list[j]); | |
431 | return -ENOMEM; | |
432 | } | |
433 | usb_fill_bulk_urb(s->urb_list[i], | |
434 | s->udev, | |
435 | usb_rcvbulkpipe(s->udev, 0x81), | |
436 | s->buf_list[i], | |
437 | BULK_BUFFER_SIZE, | |
438 | airspy_urb_complete, s); | |
439 | ||
440 | s->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; | |
441 | s->urb_list[i]->transfer_dma = s->dma_addr[i]; | |
442 | s->urbs_initialized++; | |
443 | } | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | /* Must be called with vb_queue_lock hold */ | |
449 | static void airspy_cleanup_queued_bufs(struct airspy *s) | |
450 | { | |
8880f2cb | 451 | unsigned long flags; |
634fe503 | 452 | |
617123ae | 453 | dev_dbg(s->dev, "\n"); |
634fe503 AP |
454 | |
455 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
456 | while (!list_empty(&s->queued_bufs)) { | |
457 | struct airspy_frame_buf *buf; | |
7057005d | 458 | |
634fe503 AP |
459 | buf = list_entry(s->queued_bufs.next, |
460 | struct airspy_frame_buf, list); | |
461 | list_del(&buf->list); | |
2d700715 | 462 | vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
634fe503 AP |
463 | } |
464 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
465 | } | |
466 | ||
467 | /* The user yanked out the cable... */ | |
468 | static void airspy_disconnect(struct usb_interface *intf) | |
469 | { | |
470 | struct v4l2_device *v = usb_get_intfdata(intf); | |
471 | struct airspy *s = container_of(v, struct airspy, v4l2_dev); | |
472 | ||
617123ae | 473 | dev_dbg(s->dev, "\n"); |
634fe503 AP |
474 | |
475 | mutex_lock(&s->vb_queue_lock); | |
476 | mutex_lock(&s->v4l2_lock); | |
477 | /* No need to keep the urbs around after disconnection */ | |
478 | s->udev = NULL; | |
479 | v4l2_device_disconnect(&s->v4l2_dev); | |
480 | video_unregister_device(&s->vdev); | |
481 | mutex_unlock(&s->v4l2_lock); | |
482 | mutex_unlock(&s->vb_queue_lock); | |
483 | ||
484 | v4l2_device_put(&s->v4l2_dev); | |
485 | } | |
486 | ||
487 | /* Videobuf2 operations */ | |
488 | static int airspy_queue_setup(struct vb2_queue *vq, | |
df9ecb0c | 489 | unsigned int *nbuffers, |
36c0f8b3 | 490 | unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) |
634fe503 AP |
491 | { |
492 | struct airspy *s = vb2_get_drv_priv(vq); | |
493 | ||
617123ae | 494 | dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers); |
634fe503 AP |
495 | |
496 | /* Need at least 8 buffers */ | |
497 | if (vq->num_buffers + *nbuffers < 8) | |
498 | *nbuffers = 8 - vq->num_buffers; | |
499 | *nplanes = 1; | |
1b303e1a | 500 | sizes[0] = PAGE_ALIGN(s->buffersize); |
634fe503 | 501 | |
617123ae | 502 | dev_dbg(s->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); |
634fe503 AP |
503 | return 0; |
504 | } | |
505 | ||
506 | static void airspy_buf_queue(struct vb2_buffer *vb) | |
507 | { | |
2d700715 | 508 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
634fe503 AP |
509 | struct airspy *s = vb2_get_drv_priv(vb->vb2_queue); |
510 | struct airspy_frame_buf *buf = | |
2d700715 | 511 | container_of(vbuf, struct airspy_frame_buf, vb); |
8880f2cb | 512 | unsigned long flags; |
634fe503 AP |
513 | |
514 | /* Check the device has not disconnected between prep and queuing */ | |
515 | if (unlikely(!s->udev)) { | |
2d700715 | 516 | vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
634fe503 AP |
517 | return; |
518 | } | |
519 | ||
520 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
521 | list_add_tail(&buf->list, &s->queued_bufs); | |
522 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
523 | } | |
524 | ||
525 | static int airspy_start_streaming(struct vb2_queue *vq, unsigned int count) | |
526 | { | |
527 | struct airspy *s = vb2_get_drv_priv(vq); | |
528 | int ret; | |
529 | ||
617123ae | 530 | dev_dbg(s->dev, "\n"); |
634fe503 AP |
531 | |
532 | if (!s->udev) | |
533 | return -ENODEV; | |
534 | ||
535 | mutex_lock(&s->v4l2_lock); | |
536 | ||
634fe503 AP |
537 | s->sequence = 0; |
538 | ||
6b831d78 AP |
539 | set_bit(POWER_ON, &s->flags); |
540 | ||
634fe503 AP |
541 | ret = airspy_alloc_stream_bufs(s); |
542 | if (ret) | |
6b831d78 | 543 | goto err_clear_bit; |
634fe503 AP |
544 | |
545 | ret = airspy_alloc_urbs(s); | |
546 | if (ret) | |
6b831d78 | 547 | goto err_free_stream_bufs; |
634fe503 AP |
548 | |
549 | ret = airspy_submit_urbs(s); | |
550 | if (ret) | |
6b831d78 | 551 | goto err_free_urbs; |
634fe503 AP |
552 | |
553 | /* start hardware streaming */ | |
554 | ret = airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 1, 0, NULL, 0); | |
555 | if (ret) | |
6b831d78 AP |
556 | goto err_kill_urbs; |
557 | ||
558 | goto exit_mutex_unlock; | |
559 | ||
560 | err_kill_urbs: | |
561 | airspy_kill_urbs(s); | |
562 | err_free_urbs: | |
563 | airspy_free_urbs(s); | |
564 | err_free_stream_bufs: | |
565 | airspy_free_stream_bufs(s); | |
566 | err_clear_bit: | |
567 | clear_bit(POWER_ON, &s->flags); | |
568 | ||
569 | /* return all queued buffers to vb2 */ | |
570 | { | |
571 | struct airspy_frame_buf *buf, *tmp; | |
572 | ||
573 | list_for_each_entry_safe(buf, tmp, &s->queued_bufs, list) { | |
574 | list_del(&buf->list); | |
2d700715 JS |
575 | vb2_buffer_done(&buf->vb.vb2_buf, |
576 | VB2_BUF_STATE_QUEUED); | |
6b831d78 AP |
577 | } |
578 | } | |
579 | ||
580 | exit_mutex_unlock: | |
634fe503 AP |
581 | mutex_unlock(&s->v4l2_lock); |
582 | ||
583 | return ret; | |
584 | } | |
585 | ||
586 | static void airspy_stop_streaming(struct vb2_queue *vq) | |
587 | { | |
588 | struct airspy *s = vb2_get_drv_priv(vq); | |
634fe503 | 589 | |
617123ae | 590 | dev_dbg(s->dev, "\n"); |
634fe503 AP |
591 | |
592 | mutex_lock(&s->v4l2_lock); | |
593 | ||
594 | /* stop hardware streaming */ | |
d9d889d3 | 595 | airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0); |
634fe503 AP |
596 | |
597 | airspy_kill_urbs(s); | |
598 | airspy_free_urbs(s); | |
599 | airspy_free_stream_bufs(s); | |
600 | ||
601 | airspy_cleanup_queued_bufs(s); | |
602 | ||
603 | clear_bit(POWER_ON, &s->flags); | |
604 | ||
605 | mutex_unlock(&s->v4l2_lock); | |
606 | } | |
607 | ||
608 | static struct vb2_ops airspy_vb2_ops = { | |
609 | .queue_setup = airspy_queue_setup, | |
610 | .buf_queue = airspy_buf_queue, | |
611 | .start_streaming = airspy_start_streaming, | |
612 | .stop_streaming = airspy_stop_streaming, | |
613 | .wait_prepare = vb2_ops_wait_prepare, | |
614 | .wait_finish = vb2_ops_wait_finish, | |
615 | }; | |
616 | ||
617 | static int airspy_querycap(struct file *file, void *fh, | |
618 | struct v4l2_capability *cap) | |
619 | { | |
620 | struct airspy *s = video_drvdata(file); | |
621 | ||
634fe503 AP |
622 | strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
623 | strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); | |
624 | usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); | |
625 | cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | | |
626 | V4L2_CAP_READWRITE | V4L2_CAP_TUNER; | |
627 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | static int airspy_enum_fmt_sdr_cap(struct file *file, void *priv, | |
633 | struct v4l2_fmtdesc *f) | |
634 | { | |
634fe503 AP |
635 | if (f->index >= NUM_FORMATS) |
636 | return -EINVAL; | |
637 | ||
638 | strlcpy(f->description, formats[f->index].name, sizeof(f->description)); | |
639 | f->pixelformat = formats[f->index].pixelformat; | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | static int airspy_g_fmt_sdr_cap(struct file *file, void *priv, | |
645 | struct v4l2_format *f) | |
646 | { | |
647 | struct airspy *s = video_drvdata(file); | |
648 | ||
634fe503 | 649 | f->fmt.sdr.pixelformat = s->pixelformat; |
1b303e1a AP |
650 | f->fmt.sdr.buffersize = s->buffersize; |
651 | memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); | |
634fe503 AP |
652 | |
653 | return 0; | |
654 | } | |
655 | ||
656 | static int airspy_s_fmt_sdr_cap(struct file *file, void *priv, | |
657 | struct v4l2_format *f) | |
658 | { | |
659 | struct airspy *s = video_drvdata(file); | |
660 | struct vb2_queue *q = &s->vb_queue; | |
661 | int i; | |
662 | ||
634fe503 AP |
663 | if (vb2_is_busy(q)) |
664 | return -EBUSY; | |
665 | ||
666 | memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); | |
667 | for (i = 0; i < NUM_FORMATS; i++) { | |
668 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { | |
1b303e1a AP |
669 | s->pixelformat = formats[i].pixelformat; |
670 | s->buffersize = formats[i].buffersize; | |
671 | f->fmt.sdr.buffersize = formats[i].buffersize; | |
634fe503 AP |
672 | return 0; |
673 | } | |
674 | } | |
675 | ||
634fe503 | 676 | s->pixelformat = formats[0].pixelformat; |
1b303e1a AP |
677 | s->buffersize = formats[0].buffersize; |
678 | f->fmt.sdr.pixelformat = formats[0].pixelformat; | |
679 | f->fmt.sdr.buffersize = formats[0].buffersize; | |
634fe503 AP |
680 | |
681 | return 0; | |
682 | } | |
683 | ||
684 | static int airspy_try_fmt_sdr_cap(struct file *file, void *priv, | |
685 | struct v4l2_format *f) | |
686 | { | |
634fe503 AP |
687 | int i; |
688 | ||
634fe503 AP |
689 | memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
690 | for (i = 0; i < NUM_FORMATS; i++) { | |
1b303e1a AP |
691 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
692 | f->fmt.sdr.buffersize = formats[i].buffersize; | |
634fe503 | 693 | return 0; |
1b303e1a | 694 | } |
634fe503 AP |
695 | } |
696 | ||
697 | f->fmt.sdr.pixelformat = formats[0].pixelformat; | |
1b303e1a | 698 | f->fmt.sdr.buffersize = formats[0].buffersize; |
634fe503 AP |
699 | |
700 | return 0; | |
701 | } | |
702 | ||
703 | static int airspy_s_tuner(struct file *file, void *priv, | |
704 | const struct v4l2_tuner *v) | |
705 | { | |
634fe503 AP |
706 | int ret; |
707 | ||
634fe503 AP |
708 | if (v->index == 0) |
709 | ret = 0; | |
710 | else if (v->index == 1) | |
711 | ret = 0; | |
712 | else | |
713 | ret = -EINVAL; | |
714 | ||
715 | return ret; | |
716 | } | |
717 | ||
718 | static int airspy_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) | |
719 | { | |
634fe503 AP |
720 | int ret; |
721 | ||
634fe503 AP |
722 | if (v->index == 0) { |
723 | strlcpy(v->name, "AirSpy ADC", sizeof(v->name)); | |
724 | v->type = V4L2_TUNER_ADC; | |
725 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; | |
726 | v->rangelow = bands[0].rangelow; | |
727 | v->rangehigh = bands[0].rangehigh; | |
728 | ret = 0; | |
729 | } else if (v->index == 1) { | |
730 | strlcpy(v->name, "AirSpy RF", sizeof(v->name)); | |
731 | v->type = V4L2_TUNER_RF; | |
732 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; | |
733 | v->rangelow = bands_rf[0].rangelow; | |
734 | v->rangehigh = bands_rf[0].rangehigh; | |
735 | ret = 0; | |
736 | } else { | |
737 | ret = -EINVAL; | |
738 | } | |
739 | ||
740 | return ret; | |
741 | } | |
742 | ||
743 | static int airspy_g_frequency(struct file *file, void *priv, | |
744 | struct v4l2_frequency *f) | |
745 | { | |
746 | struct airspy *s = video_drvdata(file); | |
617123ae | 747 | int ret; |
634fe503 AP |
748 | |
749 | if (f->tuner == 0) { | |
750 | f->type = V4L2_TUNER_ADC; | |
751 | f->frequency = s->f_adc; | |
617123ae | 752 | dev_dbg(s->dev, "ADC frequency=%u Hz\n", s->f_adc); |
634fe503 AP |
753 | ret = 0; |
754 | } else if (f->tuner == 1) { | |
755 | f->type = V4L2_TUNER_RF; | |
756 | f->frequency = s->f_rf; | |
617123ae AP |
757 | dev_dbg(s->dev, "RF frequency=%u Hz\n", s->f_rf); |
758 | ret = 0; | |
634fe503 AP |
759 | } else { |
760 | ret = -EINVAL; | |
761 | } | |
762 | ||
763 | return ret; | |
764 | } | |
765 | ||
766 | static int airspy_s_frequency(struct file *file, void *priv, | |
767 | const struct v4l2_frequency *f) | |
768 | { | |
769 | struct airspy *s = video_drvdata(file); | |
770 | int ret; | |
771 | u8 buf[4]; | |
772 | ||
634fe503 AP |
773 | if (f->tuner == 0) { |
774 | s->f_adc = clamp_t(unsigned int, f->frequency, | |
775 | bands[0].rangelow, | |
776 | bands[0].rangehigh); | |
617123ae | 777 | dev_dbg(s->dev, "ADC frequency=%u Hz\n", s->f_adc); |
634fe503 AP |
778 | ret = 0; |
779 | } else if (f->tuner == 1) { | |
780 | s->f_rf = clamp_t(unsigned int, f->frequency, | |
781 | bands_rf[0].rangelow, | |
782 | bands_rf[0].rangehigh); | |
617123ae | 783 | dev_dbg(s->dev, "RF frequency=%u Hz\n", s->f_rf); |
634fe503 AP |
784 | buf[0] = (s->f_rf >> 0) & 0xff; |
785 | buf[1] = (s->f_rf >> 8) & 0xff; | |
786 | buf[2] = (s->f_rf >> 16) & 0xff; | |
787 | buf[3] = (s->f_rf >> 24) & 0xff; | |
788 | ret = airspy_ctrl_msg(s, CMD_SET_FREQ, 0, 0, buf, 4); | |
789 | } else { | |
790 | ret = -EINVAL; | |
791 | } | |
792 | ||
793 | return ret; | |
794 | } | |
795 | ||
796 | static int airspy_enum_freq_bands(struct file *file, void *priv, | |
797 | struct v4l2_frequency_band *band) | |
798 | { | |
634fe503 | 799 | int ret; |
7057005d | 800 | |
634fe503 AP |
801 | if (band->tuner == 0) { |
802 | if (band->index >= ARRAY_SIZE(bands)) { | |
803 | ret = -EINVAL; | |
804 | } else { | |
805 | *band = bands[band->index]; | |
806 | ret = 0; | |
807 | } | |
808 | } else if (band->tuner == 1) { | |
809 | if (band->index >= ARRAY_SIZE(bands_rf)) { | |
810 | ret = -EINVAL; | |
811 | } else { | |
812 | *band = bands_rf[band->index]; | |
813 | ret = 0; | |
814 | } | |
815 | } else { | |
816 | ret = -EINVAL; | |
817 | } | |
818 | ||
819 | return ret; | |
820 | } | |
821 | ||
822 | static const struct v4l2_ioctl_ops airspy_ioctl_ops = { | |
823 | .vidioc_querycap = airspy_querycap, | |
824 | ||
825 | .vidioc_enum_fmt_sdr_cap = airspy_enum_fmt_sdr_cap, | |
826 | .vidioc_g_fmt_sdr_cap = airspy_g_fmt_sdr_cap, | |
827 | .vidioc_s_fmt_sdr_cap = airspy_s_fmt_sdr_cap, | |
828 | .vidioc_try_fmt_sdr_cap = airspy_try_fmt_sdr_cap, | |
829 | ||
830 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
831 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
832 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
833 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
834 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
835 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
836 | ||
837 | .vidioc_streamon = vb2_ioctl_streamon, | |
838 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
839 | ||
840 | .vidioc_g_tuner = airspy_g_tuner, | |
841 | .vidioc_s_tuner = airspy_s_tuner, | |
842 | ||
843 | .vidioc_g_frequency = airspy_g_frequency, | |
844 | .vidioc_s_frequency = airspy_s_frequency, | |
845 | .vidioc_enum_freq_bands = airspy_enum_freq_bands, | |
846 | ||
847 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
848 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
849 | .vidioc_log_status = v4l2_ctrl_log_status, | |
850 | }; | |
851 | ||
852 | static const struct v4l2_file_operations airspy_fops = { | |
853 | .owner = THIS_MODULE, | |
854 | .open = v4l2_fh_open, | |
855 | .release = vb2_fop_release, | |
856 | .read = vb2_fop_read, | |
857 | .poll = vb2_fop_poll, | |
858 | .mmap = vb2_fop_mmap, | |
859 | .unlocked_ioctl = video_ioctl2, | |
860 | }; | |
861 | ||
862 | static struct video_device airspy_template = { | |
863 | .name = "AirSpy SDR", | |
864 | .release = video_device_release_empty, | |
865 | .fops = &airspy_fops, | |
866 | .ioctl_ops = &airspy_ioctl_ops, | |
867 | }; | |
868 | ||
869 | static void airspy_video_release(struct v4l2_device *v) | |
870 | { | |
871 | struct airspy *s = container_of(v, struct airspy, v4l2_dev); | |
872 | ||
873 | v4l2_ctrl_handler_free(&s->hdl); | |
874 | v4l2_device_unregister(&s->v4l2_dev); | |
875 | kfree(s); | |
876 | } | |
877 | ||
878 | static int airspy_set_lna_gain(struct airspy *s) | |
879 | { | |
880 | int ret; | |
881 | u8 u8tmp; | |
882 | ||
617123ae AP |
883 | dev_dbg(s->dev, "lna auto=%d->%d val=%d->%d\n", |
884 | s->lna_gain_auto->cur.val, s->lna_gain_auto->val, | |
885 | s->lna_gain->cur.val, s->lna_gain->val); | |
634fe503 AP |
886 | |
887 | ret = airspy_ctrl_msg(s, CMD_SET_LNA_AGC, 0, s->lna_gain_auto->val, | |
888 | &u8tmp, 1); | |
889 | if (ret) | |
890 | goto err; | |
891 | ||
892 | if (s->lna_gain_auto->val == false) { | |
893 | ret = airspy_ctrl_msg(s, CMD_SET_LNA_GAIN, 0, s->lna_gain->val, | |
894 | &u8tmp, 1); | |
895 | if (ret) | |
896 | goto err; | |
897 | } | |
898 | err: | |
899 | if (ret) | |
617123ae | 900 | dev_dbg(s->dev, "failed=%d\n", ret); |
634fe503 AP |
901 | |
902 | return ret; | |
903 | } | |
904 | ||
905 | static int airspy_set_mixer_gain(struct airspy *s) | |
906 | { | |
907 | int ret; | |
908 | u8 u8tmp; | |
909 | ||
617123ae AP |
910 | dev_dbg(s->dev, "mixer auto=%d->%d val=%d->%d\n", |
911 | s->mixer_gain_auto->cur.val, s->mixer_gain_auto->val, | |
912 | s->mixer_gain->cur.val, s->mixer_gain->val); | |
634fe503 AP |
913 | |
914 | ret = airspy_ctrl_msg(s, CMD_SET_MIXER_AGC, 0, s->mixer_gain_auto->val, | |
915 | &u8tmp, 1); | |
916 | if (ret) | |
917 | goto err; | |
918 | ||
919 | if (s->mixer_gain_auto->val == false) { | |
920 | ret = airspy_ctrl_msg(s, CMD_SET_MIXER_GAIN, 0, | |
921 | s->mixer_gain->val, &u8tmp, 1); | |
922 | if (ret) | |
923 | goto err; | |
924 | } | |
925 | err: | |
926 | if (ret) | |
617123ae | 927 | dev_dbg(s->dev, "failed=%d\n", ret); |
634fe503 AP |
928 | |
929 | return ret; | |
930 | } | |
931 | ||
932 | static int airspy_set_if_gain(struct airspy *s) | |
933 | { | |
934 | int ret; | |
935 | u8 u8tmp; | |
936 | ||
617123ae | 937 | dev_dbg(s->dev, "val=%d->%d\n", s->if_gain->cur.val, s->if_gain->val); |
634fe503 AP |
938 | |
939 | ret = airspy_ctrl_msg(s, CMD_SET_VGA_GAIN, 0, s->if_gain->val, | |
940 | &u8tmp, 1); | |
634fe503 | 941 | if (ret) |
617123ae | 942 | dev_dbg(s->dev, "failed=%d\n", ret); |
634fe503 AP |
943 | |
944 | return ret; | |
945 | } | |
946 | ||
947 | static int airspy_s_ctrl(struct v4l2_ctrl *ctrl) | |
948 | { | |
949 | struct airspy *s = container_of(ctrl->handler, struct airspy, hdl); | |
950 | int ret; | |
951 | ||
952 | switch (ctrl->id) { | |
953 | case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: | |
954 | case V4L2_CID_RF_TUNER_LNA_GAIN: | |
955 | ret = airspy_set_lna_gain(s); | |
956 | break; | |
957 | case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: | |
958 | case V4L2_CID_RF_TUNER_MIXER_GAIN: | |
959 | ret = airspy_set_mixer_gain(s); | |
960 | break; | |
961 | case V4L2_CID_RF_TUNER_IF_GAIN: | |
962 | ret = airspy_set_if_gain(s); | |
963 | break; | |
964 | default: | |
617123ae AP |
965 | dev_dbg(s->dev, "unknown ctrl: id=%d name=%s\n", |
966 | ctrl->id, ctrl->name); | |
634fe503 AP |
967 | ret = -EINVAL; |
968 | } | |
969 | ||
970 | return ret; | |
971 | } | |
972 | ||
973 | static const struct v4l2_ctrl_ops airspy_ctrl_ops = { | |
974 | .s_ctrl = airspy_s_ctrl, | |
975 | }; | |
976 | ||
977 | static int airspy_probe(struct usb_interface *intf, | |
978 | const struct usb_device_id *id) | |
979 | { | |
617123ae | 980 | struct airspy *s; |
634fe503 AP |
981 | int ret; |
982 | u8 u8tmp, buf[BUF_SIZE]; | |
983 | ||
984 | s = kzalloc(sizeof(struct airspy), GFP_KERNEL); | |
985 | if (s == NULL) { | |
617123ae | 986 | dev_err(&intf->dev, "Could not allocate memory for state\n"); |
634fe503 AP |
987 | return -ENOMEM; |
988 | } | |
989 | ||
990 | mutex_init(&s->v4l2_lock); | |
991 | mutex_init(&s->vb_queue_lock); | |
992 | spin_lock_init(&s->queued_bufs_lock); | |
993 | INIT_LIST_HEAD(&s->queued_bufs); | |
617123ae AP |
994 | s->dev = &intf->dev; |
995 | s->udev = interface_to_usbdev(intf); | |
634fe503 AP |
996 | s->f_adc = bands[0].rangelow; |
997 | s->f_rf = bands_rf[0].rangelow; | |
1b303e1a AP |
998 | s->pixelformat = formats[0].pixelformat; |
999 | s->buffersize = formats[0].buffersize; | |
634fe503 AP |
1000 | |
1001 | /* Detect device */ | |
1002 | ret = airspy_ctrl_msg(s, CMD_BOARD_ID_READ, 0, 0, &u8tmp, 1); | |
1003 | if (ret == 0) | |
1004 | ret = airspy_ctrl_msg(s, CMD_VERSION_STRING_READ, 0, 0, | |
1005 | buf, BUF_SIZE); | |
1006 | if (ret) { | |
617123ae | 1007 | dev_err(s->dev, "Could not detect board\n"); |
634fe503 AP |
1008 | goto err_free_mem; |
1009 | } | |
1010 | ||
1011 | buf[BUF_SIZE - 1] = '\0'; | |
1012 | ||
617123ae AP |
1013 | dev_info(s->dev, "Board ID: %02x\n", u8tmp); |
1014 | dev_info(s->dev, "Firmware version: %s\n", buf); | |
634fe503 AP |
1015 | |
1016 | /* Init videobuf2 queue structure */ | |
1017 | s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; | |
1018 | s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; | |
1019 | s->vb_queue.drv_priv = s; | |
1020 | s->vb_queue.buf_struct_size = sizeof(struct airspy_frame_buf); | |
1021 | s->vb_queue.ops = &airspy_vb2_ops; | |
1022 | s->vb_queue.mem_ops = &vb2_vmalloc_memops; | |
1023 | s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
1024 | ret = vb2_queue_init(&s->vb_queue); | |
1025 | if (ret) { | |
617123ae | 1026 | dev_err(s->dev, "Could not initialize vb2 queue\n"); |
634fe503 AP |
1027 | goto err_free_mem; |
1028 | } | |
1029 | ||
1030 | /* Init video_device structure */ | |
1031 | s->vdev = airspy_template; | |
1032 | s->vdev.queue = &s->vb_queue; | |
1033 | s->vdev.queue->lock = &s->vb_queue_lock; | |
634fe503 AP |
1034 | video_set_drvdata(&s->vdev, s); |
1035 | ||
1036 | /* Register the v4l2_device structure */ | |
1037 | s->v4l2_dev.release = airspy_video_release; | |
1038 | ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); | |
1039 | if (ret) { | |
617123ae | 1040 | dev_err(s->dev, "Failed to register v4l2-device (%d)\n", ret); |
634fe503 AP |
1041 | goto err_free_mem; |
1042 | } | |
1043 | ||
1044 | /* Register controls */ | |
1045 | v4l2_ctrl_handler_init(&s->hdl, 5); | |
1046 | s->lna_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, | |
1047 | V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 0); | |
1048 | s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, | |
1049 | V4L2_CID_RF_TUNER_LNA_GAIN, 0, 14, 1, 8); | |
1050 | v4l2_ctrl_auto_cluster(2, &s->lna_gain_auto, 0, false); | |
1051 | s->mixer_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, | |
1052 | V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 0); | |
1053 | s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, | |
1054 | V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 15, 1, 8); | |
1055 | v4l2_ctrl_auto_cluster(2, &s->mixer_gain_auto, 0, false); | |
1056 | s->if_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, | |
1057 | V4L2_CID_RF_TUNER_IF_GAIN, 0, 15, 1, 0); | |
1058 | if (s->hdl.error) { | |
1059 | ret = s->hdl.error; | |
617123ae | 1060 | dev_err(s->dev, "Could not initialize controls\n"); |
634fe503 AP |
1061 | goto err_free_controls; |
1062 | } | |
1063 | ||
1064 | v4l2_ctrl_handler_setup(&s->hdl); | |
1065 | ||
1066 | s->v4l2_dev.ctrl_handler = &s->hdl; | |
1067 | s->vdev.v4l2_dev = &s->v4l2_dev; | |
1068 | s->vdev.lock = &s->v4l2_lock; | |
1069 | ||
1070 | ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); | |
1071 | if (ret) { | |
617123ae | 1072 | dev_err(s->dev, "Failed to register as video device (%d)\n", |
634fe503 | 1073 | ret); |
aa93d1fe | 1074 | goto err_free_controls; |
634fe503 | 1075 | } |
617123ae | 1076 | dev_info(s->dev, "Registered as %s\n", |
634fe503 | 1077 | video_device_node_name(&s->vdev)); |
617123ae | 1078 | dev_notice(s->dev, "SDR API is still slightly experimental and functionality changes may follow\n"); |
634fe503 AP |
1079 | return 0; |
1080 | ||
1081 | err_free_controls: | |
1082 | v4l2_ctrl_handler_free(&s->hdl); | |
634fe503 AP |
1083 | v4l2_device_unregister(&s->v4l2_dev); |
1084 | err_free_mem: | |
1085 | kfree(s); | |
1086 | return ret; | |
1087 | } | |
1088 | ||
1089 | /* USB device ID list */ | |
1090 | static struct usb_device_id airspy_id_table[] = { | |
1091 | { USB_DEVICE(0x1d50, 0x60a1) }, /* AirSpy */ | |
1092 | { } | |
1093 | }; | |
1094 | MODULE_DEVICE_TABLE(usb, airspy_id_table); | |
1095 | ||
1096 | /* USB subsystem interface */ | |
1097 | static struct usb_driver airspy_driver = { | |
1098 | .name = KBUILD_MODNAME, | |
1099 | .probe = airspy_probe, | |
1100 | .disconnect = airspy_disconnect, | |
1101 | .id_table = airspy_id_table, | |
1102 | }; | |
1103 | ||
1104 | module_usb_driver(airspy_driver); | |
1105 | ||
1106 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); | |
1107 | MODULE_DESCRIPTION("AirSpy SDR"); | |
1108 | MODULE_LICENSE("GPL"); |