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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 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/input.h> | |
26 | #include <linux/videodev2.h> | |
27 | #include <media/v4l2-device.h> | |
28 | #include <media/v4l2-ioctl.h> | |
29 | #include <media/v4l2-ctrls.h> | |
30 | #include <media/v4l2-event.h> | |
31 | #include <linux/usb.h> | |
32 | #include <linux/mutex.h> | |
33 | #include <media/videobuf2-vmalloc.h> | |
34 | ||
35 | struct msi3101_gain { | |
36 | u8 tot:7; | |
37 | u8 baseband:6; | |
38 | bool lna:1; | |
39 | bool mixer:1; | |
40 | }; | |
41 | ||
42 | /* 60 – 120 MHz band, lna 24dB, mixer 19dB */ | |
43 | static const struct msi3101_gain msi3101_gain_lut_120[] = { | |
44 | { 0, 0, 0, 0}, | |
45 | { 1, 1, 0, 0}, | |
46 | { 2, 2, 0, 0}, | |
47 | { 3, 3, 0, 0}, | |
48 | { 4, 4, 0, 0}, | |
49 | { 5, 5, 0, 0}, | |
50 | { 6, 6, 0, 0}, | |
51 | { 7, 7, 0, 0}, | |
52 | { 8, 8, 0, 0}, | |
53 | { 9, 9, 0, 0}, | |
54 | { 10, 10, 0, 0}, | |
55 | { 11, 11, 0, 0}, | |
56 | { 12, 12, 0, 0}, | |
57 | { 13, 13, 0, 0}, | |
58 | { 14, 14, 0, 0}, | |
59 | { 15, 15, 0, 0}, | |
60 | { 16, 16, 0, 0}, | |
61 | { 17, 17, 0, 0}, | |
62 | { 18, 18, 0, 0}, | |
63 | { 19, 19, 0, 0}, | |
64 | { 20, 20, 0, 0}, | |
65 | { 21, 21, 0, 0}, | |
66 | { 22, 22, 0, 0}, | |
67 | { 23, 23, 0, 0}, | |
68 | { 24, 24, 0, 0}, | |
69 | { 25, 25, 0, 0}, | |
70 | { 26, 26, 0, 0}, | |
71 | { 27, 27, 0, 0}, | |
72 | { 28, 28, 0, 0}, | |
73 | { 29, 5, 1, 0}, | |
74 | { 30, 6, 1, 0}, | |
75 | { 31, 7, 1, 0}, | |
76 | { 32, 8, 1, 0}, | |
77 | { 33, 9, 1, 0}, | |
78 | { 34, 10, 1, 0}, | |
79 | { 35, 11, 1, 0}, | |
80 | { 36, 12, 1, 0}, | |
81 | { 37, 13, 1, 0}, | |
82 | { 38, 14, 1, 0}, | |
83 | { 39, 15, 1, 0}, | |
84 | { 40, 16, 1, 0}, | |
85 | { 41, 17, 1, 0}, | |
86 | { 42, 18, 1, 0}, | |
87 | { 43, 19, 1, 0}, | |
88 | { 44, 20, 1, 0}, | |
89 | { 45, 21, 1, 0}, | |
90 | { 46, 22, 1, 0}, | |
91 | { 47, 23, 1, 0}, | |
92 | { 48, 24, 1, 0}, | |
93 | { 49, 25, 1, 0}, | |
94 | { 50, 26, 1, 0}, | |
95 | { 51, 27, 1, 0}, | |
96 | { 52, 28, 1, 0}, | |
97 | { 53, 29, 1, 0}, | |
98 | { 54, 30, 1, 0}, | |
99 | { 55, 31, 1, 0}, | |
100 | { 56, 32, 1, 0}, | |
101 | { 57, 33, 1, 0}, | |
102 | { 58, 34, 1, 0}, | |
103 | { 59, 35, 1, 0}, | |
104 | { 60, 36, 1, 0}, | |
105 | { 61, 37, 1, 0}, | |
106 | { 62, 38, 1, 0}, | |
107 | { 63, 39, 1, 0}, | |
108 | { 64, 40, 1, 0}, | |
109 | { 65, 41, 1, 0}, | |
110 | { 66, 42, 1, 0}, | |
111 | { 67, 43, 1, 0}, | |
112 | { 68, 44, 1, 0}, | |
113 | { 69, 45, 1, 0}, | |
114 | { 70, 46, 1, 0}, | |
115 | { 71, 47, 1, 0}, | |
116 | { 72, 48, 1, 0}, | |
117 | { 73, 49, 1, 0}, | |
118 | { 74, 50, 1, 0}, | |
119 | { 75, 51, 1, 0}, | |
120 | { 76, 52, 1, 0}, | |
121 | { 77, 53, 1, 0}, | |
122 | { 78, 54, 1, 0}, | |
123 | { 79, 55, 1, 0}, | |
124 | { 80, 56, 1, 0}, | |
125 | { 81, 57, 1, 0}, | |
126 | { 82, 58, 1, 0}, | |
127 | { 83, 40, 1, 1}, | |
128 | { 84, 41, 1, 1}, | |
129 | { 85, 42, 1, 1}, | |
130 | { 86, 43, 1, 1}, | |
131 | { 87, 44, 1, 1}, | |
132 | { 88, 45, 1, 1}, | |
133 | { 89, 46, 1, 1}, | |
134 | { 90, 47, 1, 1}, | |
135 | { 91, 48, 1, 1}, | |
136 | { 92, 49, 1, 1}, | |
137 | { 93, 50, 1, 1}, | |
138 | { 94, 51, 1, 1}, | |
139 | { 95, 52, 1, 1}, | |
140 | { 96, 53, 1, 1}, | |
141 | { 97, 54, 1, 1}, | |
142 | { 98, 55, 1, 1}, | |
143 | { 99, 56, 1, 1}, | |
144 | {100, 57, 1, 1}, | |
145 | {101, 58, 1, 1}, | |
146 | {102, 59, 1, 1}, | |
147 | }; | |
148 | ||
149 | /* 120 – 245 MHz band, lna 24dB, mixer 19dB */ | |
150 | static const struct msi3101_gain msi3101_gain_lut_245[] = { | |
151 | { 0, 0, 0, 0}, | |
152 | { 1, 1, 0, 0}, | |
153 | { 2, 2, 0, 0}, | |
154 | { 3, 3, 0, 0}, | |
155 | { 4, 4, 0, 0}, | |
156 | { 5, 5, 0, 0}, | |
157 | { 6, 6, 0, 0}, | |
158 | { 7, 7, 0, 0}, | |
159 | { 8, 8, 0, 0}, | |
160 | { 9, 9, 0, 0}, | |
161 | { 10, 10, 0, 0}, | |
162 | { 11, 11, 0, 0}, | |
163 | { 12, 12, 0, 0}, | |
164 | { 13, 13, 0, 0}, | |
165 | { 14, 14, 0, 0}, | |
166 | { 15, 15, 0, 0}, | |
167 | { 16, 16, 0, 0}, | |
168 | { 17, 17, 0, 0}, | |
169 | { 18, 18, 0, 0}, | |
170 | { 19, 19, 0, 0}, | |
171 | { 20, 20, 0, 0}, | |
172 | { 21, 21, 0, 0}, | |
173 | { 22, 22, 0, 0}, | |
174 | { 23, 23, 0, 0}, | |
175 | { 24, 24, 0, 0}, | |
176 | { 25, 25, 0, 0}, | |
177 | { 26, 26, 0, 0}, | |
178 | { 27, 27, 0, 0}, | |
179 | { 28, 28, 0, 0}, | |
180 | { 29, 5, 1, 0}, | |
181 | { 30, 6, 1, 0}, | |
182 | { 31, 7, 1, 0}, | |
183 | { 32, 8, 1, 0}, | |
184 | { 33, 9, 1, 0}, | |
185 | { 34, 10, 1, 0}, | |
186 | { 35, 11, 1, 0}, | |
187 | { 36, 12, 1, 0}, | |
188 | { 37, 13, 1, 0}, | |
189 | { 38, 14, 1, 0}, | |
190 | { 39, 15, 1, 0}, | |
191 | { 40, 16, 1, 0}, | |
192 | { 41, 17, 1, 0}, | |
193 | { 42, 18, 1, 0}, | |
194 | { 43, 19, 1, 0}, | |
195 | { 44, 20, 1, 0}, | |
196 | { 45, 21, 1, 0}, | |
197 | { 46, 22, 1, 0}, | |
198 | { 47, 23, 1, 0}, | |
199 | { 48, 24, 1, 0}, | |
200 | { 49, 25, 1, 0}, | |
201 | { 50, 26, 1, 0}, | |
202 | { 51, 27, 1, 0}, | |
203 | { 52, 28, 1, 0}, | |
204 | { 53, 29, 1, 0}, | |
205 | { 54, 30, 1, 0}, | |
206 | { 55, 31, 1, 0}, | |
207 | { 56, 32, 1, 0}, | |
208 | { 57, 33, 1, 0}, | |
209 | { 58, 34, 1, 0}, | |
210 | { 59, 35, 1, 0}, | |
211 | { 60, 36, 1, 0}, | |
212 | { 61, 37, 1, 0}, | |
213 | { 62, 38, 1, 0}, | |
214 | { 63, 39, 1, 0}, | |
215 | { 64, 40, 1, 0}, | |
216 | { 65, 41, 1, 0}, | |
217 | { 66, 42, 1, 0}, | |
218 | { 67, 43, 1, 0}, | |
219 | { 68, 44, 1, 0}, | |
220 | { 69, 45, 1, 0}, | |
221 | { 70, 46, 1, 0}, | |
222 | { 71, 47, 1, 0}, | |
223 | { 72, 48, 1, 0}, | |
224 | { 73, 49, 1, 0}, | |
225 | { 74, 50, 1, 0}, | |
226 | { 75, 51, 1, 0}, | |
227 | { 76, 52, 1, 0}, | |
228 | { 77, 53, 1, 0}, | |
229 | { 78, 54, 1, 0}, | |
230 | { 79, 55, 1, 0}, | |
231 | { 80, 56, 1, 0}, | |
232 | { 81, 57, 1, 0}, | |
233 | { 82, 58, 1, 0}, | |
234 | { 83, 40, 1, 1}, | |
235 | { 84, 41, 1, 1}, | |
236 | { 85, 42, 1, 1}, | |
237 | { 86, 43, 1, 1}, | |
238 | { 87, 44, 1, 1}, | |
239 | { 88, 45, 1, 1}, | |
240 | { 89, 46, 1, 1}, | |
241 | { 90, 47, 1, 1}, | |
242 | { 91, 48, 1, 1}, | |
243 | { 92, 49, 1, 1}, | |
244 | { 93, 50, 1, 1}, | |
245 | { 94, 51, 1, 1}, | |
246 | { 95, 52, 1, 1}, | |
247 | { 96, 53, 1, 1}, | |
248 | { 97, 54, 1, 1}, | |
249 | { 98, 55, 1, 1}, | |
250 | { 99, 56, 1, 1}, | |
251 | {100, 57, 1, 1}, | |
252 | {101, 58, 1, 1}, | |
253 | {102, 59, 1, 1}, | |
254 | }; | |
255 | ||
256 | /* 420 – 1000 MHz band, lna 7dB, mixer 19dB */ | |
257 | static const struct msi3101_gain msi3101_gain_lut_1000[] = { | |
258 | { 0, 0, 0, 0}, | |
259 | { 1, 1, 0, 0}, | |
260 | { 2, 2, 0, 0}, | |
261 | { 3, 3, 0, 0}, | |
262 | { 4, 4, 0, 0}, | |
263 | { 5, 5, 0, 0}, | |
264 | { 6, 6, 0, 0}, | |
265 | { 7, 7, 0, 0}, | |
266 | { 8, 8, 0, 0}, | |
267 | { 9, 9, 0, 0}, | |
268 | { 10, 10, 0, 0}, | |
269 | { 11, 11, 0, 0}, | |
270 | { 12, 5, 1, 0}, | |
271 | { 13, 6, 1, 0}, | |
272 | { 14, 7, 1, 0}, | |
273 | { 15, 8, 1, 0}, | |
274 | { 16, 9, 1, 0}, | |
275 | { 17, 10, 1, 0}, | |
276 | { 18, 11, 1, 0}, | |
277 | { 19, 12, 1, 0}, | |
278 | { 20, 13, 1, 0}, | |
279 | { 21, 14, 1, 0}, | |
280 | { 22, 15, 1, 0}, | |
281 | { 23, 16, 1, 0}, | |
282 | { 24, 17, 1, 0}, | |
283 | { 25, 18, 1, 0}, | |
284 | { 26, 19, 1, 0}, | |
285 | { 27, 20, 1, 0}, | |
286 | { 28, 21, 1, 0}, | |
287 | { 29, 22, 1, 0}, | |
288 | { 30, 23, 1, 0}, | |
289 | { 31, 24, 1, 0}, | |
290 | { 32, 25, 1, 0}, | |
291 | { 33, 26, 1, 0}, | |
292 | { 34, 27, 1, 0}, | |
293 | { 35, 28, 1, 0}, | |
294 | { 36, 29, 1, 0}, | |
295 | { 37, 30, 1, 0}, | |
296 | { 38, 31, 1, 0}, | |
297 | { 39, 32, 1, 0}, | |
298 | { 40, 33, 1, 0}, | |
299 | { 41, 34, 1, 0}, | |
300 | { 42, 35, 1, 0}, | |
301 | { 43, 36, 1, 0}, | |
302 | { 44, 37, 1, 0}, | |
303 | { 45, 38, 1, 0}, | |
304 | { 46, 39, 1, 0}, | |
305 | { 47, 40, 1, 0}, | |
306 | { 48, 41, 1, 0}, | |
307 | { 49, 42, 1, 0}, | |
308 | { 50, 43, 1, 0}, | |
309 | { 51, 44, 1, 0}, | |
310 | { 52, 45, 1, 0}, | |
311 | { 53, 46, 1, 0}, | |
312 | { 54, 47, 1, 0}, | |
313 | { 55, 48, 1, 0}, | |
314 | { 56, 49, 1, 0}, | |
315 | { 57, 50, 1, 0}, | |
316 | { 58, 51, 1, 0}, | |
317 | { 59, 52, 1, 0}, | |
318 | { 60, 53, 1, 0}, | |
319 | { 61, 54, 1, 0}, | |
320 | { 62, 55, 1, 0}, | |
321 | { 63, 56, 1, 0}, | |
322 | { 64, 57, 1, 0}, | |
323 | { 65, 58, 1, 0}, | |
324 | { 66, 40, 1, 1}, | |
325 | { 67, 41, 1, 1}, | |
326 | { 68, 42, 1, 1}, | |
327 | { 69, 43, 1, 1}, | |
328 | { 70, 44, 1, 1}, | |
329 | { 71, 45, 1, 1}, | |
330 | { 72, 46, 1, 1}, | |
331 | { 73, 47, 1, 1}, | |
332 | { 74, 48, 1, 1}, | |
333 | { 75, 49, 1, 1}, | |
334 | { 76, 50, 1, 1}, | |
335 | { 77, 51, 1, 1}, | |
336 | { 78, 52, 1, 1}, | |
337 | { 79, 53, 1, 1}, | |
338 | { 80, 54, 1, 1}, | |
339 | { 81, 55, 1, 1}, | |
340 | { 82, 56, 1, 1}, | |
341 | { 83, 57, 1, 1}, | |
342 | { 84, 58, 1, 1}, | |
343 | { 85, 59, 1, 1}, | |
344 | }; | |
345 | ||
346 | /* | |
347 | * iConfiguration 0 | |
348 | * bInterfaceNumber 0 | |
349 | * bAlternateSetting 1 | |
350 | * bNumEndpoints 1 | |
351 | * bEndpointAddress 0x81 EP 1 IN | |
352 | * bmAttributes 1 | |
353 | * Transfer Type Isochronous | |
354 | * wMaxPacketSize 0x1400 3x 1024 bytes | |
355 | * bInterval 1 | |
356 | */ | |
357 | #define MAX_ISO_BUFS (8) | |
358 | #define ISO_FRAMES_PER_DESC (8) | |
359 | #define ISO_MAX_FRAME_SIZE (3 * 1024) | |
360 | #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) | |
361 | ||
362 | #define MAX_ISOC_ERRORS 20 | |
363 | ||
364 | #define MSI3101_CID_SAMPLING_RATE ((V4L2_CID_USER_BASE | 0xf000) + 0) | |
365 | #define MSI3101_CID_SAMPLING_RESOLUTION ((V4L2_CID_USER_BASE | 0xf000) + 1) | |
366 | #define MSI3101_CID_TUNER_RF ((V4L2_CID_USER_BASE | 0xf000) + 10) | |
367 | #define MSI3101_CID_TUNER_BW ((V4L2_CID_USER_BASE | 0xf000) + 11) | |
368 | #define MSI3101_CID_TUNER_IF ((V4L2_CID_USER_BASE | 0xf000) + 12) | |
369 | #define MSI3101_CID_TUNER_GAIN ((V4L2_CID_USER_BASE | 0xf000) + 13) | |
370 | ||
371 | /* intermediate buffers with raw data from the USB device */ | |
372 | struct msi3101_frame_buf { | |
373 | struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ | |
374 | struct list_head list; | |
375 | void *data; /* raw data from USB device */ | |
376 | int filled; /* number of bytes filled to *data */ | |
377 | }; | |
378 | ||
379 | struct msi3101_state { | |
380 | struct video_device vdev; | |
381 | struct v4l2_device v4l2_dev; | |
382 | ||
383 | /* videobuf2 queue and queued buffers list */ | |
384 | struct vb2_queue vb_queue; | |
385 | struct list_head queued_bufs; | |
386 | spinlock_t queued_bufs_lock; /* Protects queued_bufs */ | |
387 | ||
388 | /* Note if taking both locks v4l2_lock must always be locked first! */ | |
389 | struct mutex v4l2_lock; /* Protects everything else */ | |
390 | struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ | |
391 | ||
392 | /* Pointer to our usb_device, will be NULL after unplug */ | |
393 | struct usb_device *udev; /* Both mutexes most be hold when setting! */ | |
394 | ||
395 | unsigned int isoc_errors; /* number of contiguous ISOC errors */ | |
396 | unsigned int vb_full; /* vb is full and packets dropped */ | |
397 | ||
398 | struct urb *urbs[MAX_ISO_BUFS]; | |
399 | ||
400 | /* Controls */ | |
401 | struct v4l2_ctrl_handler ctrl_handler; | |
402 | struct v4l2_ctrl *ctrl_sampling_rate; | |
403 | struct v4l2_ctrl *ctrl_tuner_rf; | |
404 | struct v4l2_ctrl *ctrl_tuner_bw; | |
405 | struct v4l2_ctrl *ctrl_tuner_if; | |
406 | struct v4l2_ctrl *ctrl_tuner_gain; | |
407 | ||
408 | u32 symbol_received; /* for track lost packets */ | |
409 | u32 symbol; /* for symbol rate calc */ | |
410 | unsigned long jiffies; | |
411 | }; | |
412 | ||
413 | /* Private functions */ | |
414 | static struct msi3101_frame_buf *msi3101_get_next_fill_buf( | |
415 | struct msi3101_state *s) | |
416 | { | |
417 | unsigned long flags = 0; | |
418 | struct msi3101_frame_buf *buf = NULL; | |
419 | ||
420 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
421 | if (list_empty(&s->queued_bufs)) | |
422 | goto leave; | |
423 | ||
424 | buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, list); | |
425 | list_del(&buf->list); | |
426 | leave: | |
427 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
428 | return buf; | |
429 | } | |
430 | ||
431 | /* | |
432 | * Converts signed 10-bit integer into 32-bit IEEE floating point | |
433 | * representation. | |
434 | * Will be exact from 0 to 2^24. Above that, we round towards zero | |
435 | * as the fractional bits will not fit in a float. (It would be better to | |
436 | * round towards even as the fpu does, but that is slower.) | |
437 | */ | |
438 | #define I2F_FRAC_BITS 23 | |
439 | #define I2F_MASK ((1 << I2F_FRAC_BITS) - 1) | |
440 | static uint32_t msi3101_int2float(uint32_t x) | |
441 | { | |
442 | uint32_t msb, exponent, fraction, sign; | |
443 | ||
444 | /* Zero is special */ | |
445 | if (!x) | |
446 | return 0; | |
447 | ||
448 | /* Negative / positive value */ | |
449 | if (x & 0x200) { | |
450 | x = -x; | |
451 | x &= 0x3ff; | |
452 | sign = 1 << 31; | |
453 | } else { | |
454 | sign = 0 << 31; | |
455 | } | |
456 | ||
457 | /* Get location of the most significant bit */ | |
458 | msb = __fls(x); | |
459 | ||
460 | /* | |
461 | * Use a rotate instead of a shift because that works both leftwards | |
462 | * and rightwards due to the mod(32) behaviour. This means we don't | |
463 | * need to check to see if we are above 2^24 or not. | |
464 | */ | |
465 | fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK; | |
466 | exponent = (127 + msb) << I2F_FRAC_BITS; | |
467 | ||
468 | return (fraction + exponent) | sign; | |
469 | } | |
470 | ||
471 | #define MSI3101_CONVERT_IN_URB_HANDLER | |
472 | #define MSI3101_EXTENSIVE_DEBUG | |
473 | static int msi3101_convert_stream(struct msi3101_state *s, u32 *dst, | |
474 | const u8 *src, unsigned int src_len) | |
475 | { | |
476 | int i, j, k, l, i_max, dst_len = 0; | |
477 | u16 sample[4]; | |
478 | #ifdef MSI3101_EXTENSIVE_DEBUG | |
479 | u32 symbol[3]; | |
480 | #endif | |
481 | /* There could be 1-3 1024 bytes URB frames */ | |
482 | i_max = src_len / 1024; | |
483 | for (i = 0; i < i_max; i++) { | |
484 | #ifdef MSI3101_EXTENSIVE_DEBUG | |
485 | symbol[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; | |
486 | if (i == 0 && s->symbol_received != symbol[0]) { | |
487 | dev_dbg(&s->udev->dev, | |
488 | "%d symbols lost, %d %08x:%08x\n", | |
489 | symbol[0] - s->symbol_received, | |
490 | src_len, s->symbol_received, symbol[0]); | |
491 | } | |
492 | #endif | |
493 | src += 16; | |
494 | for (j = 0; j < 6; j++) { | |
495 | for (k = 0; k < 16; k++) { | |
496 | for (l = 0; l < 10; l += 5) { | |
497 | sample[0] = (src[l + 0] & 0xff) >> 0 | (src[l + 1] & 0x03) << 8; | |
498 | sample[1] = (src[l + 1] & 0xfc) >> 2 | (src[l + 2] & 0x0f) << 6; | |
499 | sample[2] = (src[l + 2] & 0xf0) >> 4 | (src[l + 3] & 0x3f) << 4; | |
500 | sample[3] = (src[l + 3] & 0xc0) >> 6 | (src[l + 4] & 0xff) << 2; | |
501 | ||
502 | *dst++ = msi3101_int2float(sample[0]); | |
503 | *dst++ = msi3101_int2float(sample[1]); | |
504 | *dst++ = msi3101_int2float(sample[2]); | |
505 | *dst++ = msi3101_int2float(sample[3]); | |
506 | ||
507 | /* 4 x 32bit float samples */ | |
508 | dst_len += 4 * 4; | |
509 | } | |
510 | src += 10; | |
511 | } | |
512 | #ifdef MSI3101_EXTENSIVE_DEBUG | |
513 | if (memcmp(src, "\xff\xff\xff\xff", 4) && memcmp(src, "\x00\x00\x00\x00", 4)) | |
514 | dev_dbg_ratelimited(&s->udev->dev, | |
515 | "padding %*ph\n", 4, src); | |
516 | #endif | |
517 | src += 4; | |
518 | } | |
519 | src += 24; | |
520 | } | |
521 | ||
522 | #ifdef MSI3101_EXTENSIVE_DEBUG | |
523 | /* calculate symbol rate and output it in 10 seconds intervals */ | |
524 | if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { | |
525 | unsigned long jiffies_now = jiffies; | |
526 | unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); | |
527 | unsigned int symbols = symbol[i_max - 1] - s->symbol; | |
528 | s->jiffies = jiffies_now; | |
529 | s->symbol = symbol[i_max - 1]; | |
530 | dev_dbg(&s->udev->dev, | |
531 | "slen=%d symbols=%u msecs=%lu symbolrate=%lu\n", | |
532 | src_len, symbols, msecs, | |
533 | symbols * 1000UL / msecs); | |
534 | } | |
535 | ||
536 | /* last received symbol (symbol = symbol + i * 384) */ | |
537 | s->symbol_received = symbol[i_max - 1] + 384; | |
538 | #endif | |
539 | return dst_len; | |
540 | } | |
541 | ||
542 | /* | |
543 | * This gets called for the Isochronous pipe (stream). This is done in interrupt | |
544 | * time, so it has to be fast, not crash, and not stall. Neat. | |
545 | */ | |
546 | static void msi3101_isoc_handler(struct urb *urb) | |
547 | { | |
548 | struct msi3101_state *s = (struct msi3101_state *)urb->context; | |
549 | int i, flen, fstatus; | |
550 | unsigned char *iso_buf = NULL; | |
551 | struct msi3101_frame_buf *fbuf; | |
552 | ||
553 | if (urb->status == -ENOENT || urb->status == -ECONNRESET || | |
554 | urb->status == -ESHUTDOWN) { | |
555 | dev_dbg(&s->udev->dev, "URB (%p) unlinked %ssynchronuously\n", | |
556 | urb, urb->status == -ENOENT ? "" : "a"); | |
557 | return; | |
558 | } | |
559 | ||
560 | if (urb->status != 0) { | |
561 | dev_dbg(&s->udev->dev, | |
562 | "msi3101_isoc_handler() called with status %d\n", | |
563 | urb->status); | |
564 | /* Give up after a number of contiguous errors */ | |
565 | if (++s->isoc_errors > MAX_ISOC_ERRORS) | |
566 | dev_dbg(&s->udev->dev, | |
567 | "Too many ISOC errors, bailing out\n"); | |
568 | goto handler_end; | |
569 | } else { | |
570 | /* Reset ISOC error counter. We did get here, after all. */ | |
571 | s->isoc_errors = 0; | |
572 | } | |
573 | ||
574 | /* Compact data */ | |
575 | for (i = 0; i < urb->number_of_packets; i++) { | |
576 | /* Check frame error */ | |
577 | fstatus = urb->iso_frame_desc[i].status; | |
578 | if (fstatus) { | |
579 | dev_dbg(&s->udev->dev, | |
580 | "frame=%d/%d has error %d skipping\n", | |
581 | i, urb->number_of_packets, fstatus); | |
582 | goto skip; | |
583 | } | |
584 | ||
585 | /* Check if that frame contains data */ | |
586 | flen = urb->iso_frame_desc[i].actual_length; | |
587 | if (flen == 0) | |
588 | goto skip; | |
589 | ||
590 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
591 | ||
592 | /* Get free framebuffer */ | |
593 | fbuf = msi3101_get_next_fill_buf(s); | |
594 | if (fbuf == NULL) { | |
595 | s->vb_full++; | |
596 | dev_dbg_ratelimited(&s->udev->dev, | |
597 | "videobuf is full, %d packets dropped\n", | |
598 | s->vb_full); | |
599 | goto skip; | |
600 | } | |
601 | ||
602 | /* fill framebuffer */ | |
603 | #ifdef MSI3101_CONVERT_IN_URB_HANDLER | |
604 | vb2_set_plane_payload(&fbuf->vb, 0, | |
605 | msi3101_convert_stream(s, | |
606 | vb2_plane_vaddr(&fbuf->vb, 0), iso_buf, flen)); | |
607 | #else | |
608 | memcpy(fbuf->data, iso_buf, flen); | |
609 | fbuf->filled = flen; | |
610 | #endif | |
611 | vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); | |
612 | skip: | |
613 | ; | |
614 | } | |
615 | ||
616 | handler_end: | |
617 | i = usb_submit_urb(urb, GFP_ATOMIC); | |
618 | if (i != 0) | |
619 | dev_dbg(&s->udev->dev, | |
620 | "Error (%d) re-submitting urb in msi3101_isoc_handler\n", | |
621 | i); | |
622 | } | |
623 | ||
624 | static void msi3101_iso_stop(struct msi3101_state *s) | |
625 | { | |
626 | int i; | |
627 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
628 | ||
629 | /* Unlinking ISOC buffers one by one */ | |
630 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
631 | if (s->urbs[i]) { | |
632 | dev_dbg(&s->udev->dev, "Unlinking URB %p\n", | |
633 | s->urbs[i]); | |
634 | usb_kill_urb(s->urbs[i]); | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
639 | static void msi3101_iso_free(struct msi3101_state *s) | |
640 | { | |
641 | int i; | |
642 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
643 | ||
644 | /* Freeing ISOC buffers one by one */ | |
645 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
646 | if (s->urbs[i]) { | |
647 | dev_dbg(&s->udev->dev, "Freeing URB\n"); | |
648 | if (s->urbs[i]->transfer_buffer) { | |
649 | usb_free_coherent(s->udev, | |
650 | s->urbs[i]->transfer_buffer_length, | |
651 | s->urbs[i]->transfer_buffer, | |
652 | s->urbs[i]->transfer_dma); | |
653 | } | |
654 | usb_free_urb(s->urbs[i]); | |
655 | s->urbs[i] = NULL; | |
656 | } | |
657 | } | |
658 | } | |
659 | ||
660 | /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ | |
661 | static void msi3101_isoc_cleanup(struct msi3101_state *s) | |
662 | { | |
663 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
664 | ||
665 | msi3101_iso_stop(s); | |
666 | msi3101_iso_free(s); | |
667 | } | |
668 | ||
669 | /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ | |
670 | static int msi3101_isoc_init(struct msi3101_state *s) | |
671 | { | |
672 | struct usb_device *udev; | |
673 | struct urb *urb; | |
674 | int i, j, ret; | |
675 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
676 | ||
677 | s->isoc_errors = 0; | |
678 | udev = s->udev; | |
679 | ||
680 | ret = usb_set_interface(s->udev, 0, 1); | |
681 | if (ret < 0) | |
682 | return ret; | |
683 | ||
684 | /* Allocate and init Isochronuous urbs */ | |
685 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
686 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
687 | if (urb == NULL) { | |
688 | dev_err(&s->udev->dev, | |
689 | "Failed to allocate urb %d\n", i); | |
690 | msi3101_isoc_cleanup(s); | |
691 | return -ENOMEM; | |
692 | } | |
693 | s->urbs[i] = urb; | |
694 | dev_dbg(&s->udev->dev, "Allocated URB at 0x%p\n", urb); | |
695 | ||
696 | urb->interval = 1; | |
697 | urb->dev = udev; | |
698 | urb->pipe = usb_rcvisocpipe(udev, 0x81); | |
699 | urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; | |
700 | urb->transfer_buffer = usb_alloc_coherent(udev, ISO_BUFFER_SIZE, | |
701 | GFP_KERNEL, &urb->transfer_dma); | |
702 | if (urb->transfer_buffer == NULL) { | |
703 | dev_err(&s->udev->dev, | |
704 | "Failed to allocate urb buffer %d\n", | |
705 | i); | |
706 | msi3101_isoc_cleanup(s); | |
707 | return -ENOMEM; | |
708 | } | |
709 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
710 | urb->complete = msi3101_isoc_handler; | |
711 | urb->context = s; | |
712 | urb->start_frame = 0; | |
713 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
714 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
715 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
716 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; | |
717 | } | |
718 | } | |
719 | ||
720 | /* link */ | |
721 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
722 | ret = usb_submit_urb(s->urbs[i], GFP_KERNEL); | |
723 | if (ret) { | |
724 | dev_err(&s->udev->dev, | |
725 | "isoc_init() submit_urb %d failed with error %d\n", | |
726 | i, ret); | |
727 | msi3101_isoc_cleanup(s); | |
728 | return ret; | |
729 | } | |
730 | dev_dbg(&s->udev->dev, "URB 0x%p submitted.\n", s->urbs[i]); | |
731 | } | |
732 | ||
733 | /* All is done... */ | |
734 | return 0; | |
735 | } | |
736 | ||
737 | /* Must be called with vb_queue_lock hold */ | |
738 | static void msi3101_cleanup_queued_bufs(struct msi3101_state *s) | |
739 | { | |
740 | unsigned long flags = 0; | |
741 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
742 | ||
743 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
744 | while (!list_empty(&s->queued_bufs)) { | |
745 | struct msi3101_frame_buf *buf; | |
746 | ||
747 | buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, | |
748 | list); | |
749 | list_del(&buf->list); | |
750 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); | |
751 | } | |
752 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
753 | } | |
754 | ||
755 | /* The user yanked out the cable... */ | |
756 | static void msi3101_disconnect(struct usb_interface *intf) | |
757 | { | |
758 | struct v4l2_device *v = usb_get_intfdata(intf); | |
759 | struct msi3101_state *s = | |
760 | container_of(v, struct msi3101_state, v4l2_dev); | |
761 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
762 | ||
763 | mutex_lock(&s->vb_queue_lock); | |
764 | mutex_lock(&s->v4l2_lock); | |
765 | /* No need to keep the urbs around after disconnection */ | |
766 | s->udev = NULL; | |
767 | ||
768 | v4l2_device_disconnect(&s->v4l2_dev); | |
769 | video_unregister_device(&s->vdev); | |
770 | mutex_unlock(&s->v4l2_lock); | |
771 | mutex_unlock(&s->vb_queue_lock); | |
772 | ||
773 | v4l2_device_put(&s->v4l2_dev); | |
774 | } | |
775 | ||
776 | static int msi3101_querycap(struct file *file, void *fh, | |
777 | struct v4l2_capability *cap) | |
778 | { | |
779 | struct msi3101_state *s = video_drvdata(file); | |
780 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
781 | ||
782 | strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); | |
783 | strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); | |
784 | usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); | |
785 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | | |
786 | V4L2_CAP_READWRITE; | |
787 | cap->device_caps = V4L2_CAP_TUNER; | |
788 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
789 | return 0; | |
790 | } | |
791 | ||
792 | ||
793 | /* Videobuf2 operations */ | |
794 | static int msi3101_queue_setup(struct vb2_queue *vq, | |
795 | const struct v4l2_format *fmt, unsigned int *nbuffers, | |
796 | unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) | |
797 | { | |
798 | struct msi3101_state *s = vb2_get_drv_priv(vq); | |
799 | dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers); | |
800 | ||
801 | /* Absolute min and max number of buffers available for mmap() */ | |
802 | *nbuffers = 32; | |
803 | *nplanes = 1; | |
804 | sizes[0] = PAGE_ALIGN(3 * 3072); /* 3 * 768 * 4 */ | |
805 | dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", | |
806 | __func__, *nbuffers, sizes[0]); | |
807 | return 0; | |
808 | } | |
809 | ||
810 | static int msi3101_buf_init(struct vb2_buffer *vb) | |
811 | { | |
812 | struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); | |
813 | struct msi3101_frame_buf *fbuf = | |
814 | container_of(vb, struct msi3101_frame_buf, vb); | |
815 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
816 | ||
817 | fbuf->data = vzalloc(ISO_MAX_FRAME_SIZE); | |
818 | if (fbuf->data == NULL) | |
819 | return -ENOMEM; | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | static int msi3101_buf_prepare(struct vb2_buffer *vb) | |
825 | { | |
826 | struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); | |
827 | ||
828 | /* Don't allow queing new buffers after device disconnection */ | |
829 | if (!s->udev) | |
830 | return -ENODEV; | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | /* | |
836 | * +=========================================================================== | |
837 | * | 00-1024 | USB packet | |
838 | * +=========================================================================== | |
839 | * | 00- 03 | packet address | |
840 | * +--------------------------------------------------------------------------- | |
841 | * | 04- 15 | garbage | |
842 | * +--------------------------------------------------------------------------- | |
843 | * | 16- 175 | samples | |
844 | * +--------------------------------------------------------------------------- | |
845 | * | 176- 179 | padding | |
846 | * +--------------------------------------------------------------------------- | |
847 | * | 180- 339 | samples | |
848 | * +--------------------------------------------------------------------------- | |
849 | * | 340- 343 | padding | |
850 | * +--------------------------------------------------------------------------- | |
851 | * | 344- 503 | samples | |
852 | * +--------------------------------------------------------------------------- | |
853 | * | 504- 507 | padding | |
854 | * +--------------------------------------------------------------------------- | |
855 | * | 508- 667 | samples | |
856 | * +--------------------------------------------------------------------------- | |
857 | * | 668- 671 | padding | |
858 | * +--------------------------------------------------------------------------- | |
859 | * | 672- 831 | samples | |
860 | * +--------------------------------------------------------------------------- | |
861 | * | 832- 835 | padding | |
862 | * +--------------------------------------------------------------------------- | |
863 | * | 836- 995 | samples | |
864 | * +--------------------------------------------------------------------------- | |
865 | * | 996- 999 | padding | |
866 | * +--------------------------------------------------------------------------- | |
867 | * | 1000-1024 | garbage | |
868 | * +--------------------------------------------------------------------------- | |
869 | * | |
870 | * bytes 4 - 7 could have some meaning? | |
871 | * padding is "00 00 00 00" or "ff ff ff ff" | |
872 | * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes | |
873 | */ | |
874 | #ifdef MSI3101_CONVERT_IN_URB_HANDLER | |
875 | static int msi3101_buf_finish(struct vb2_buffer *vb) | |
876 | { | |
877 | return 0; | |
878 | } | |
879 | #else | |
880 | static int msi3101_buf_finish(struct vb2_buffer *vb) | |
881 | { | |
882 | struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); | |
883 | struct msi3101_frame_buf *fbuf = | |
884 | container_of(vb, struct msi3101_frame_buf, vb); | |
885 | int ret; | |
886 | u32 *dst = vb2_plane_vaddr(&fbuf->vb, 0); | |
887 | ret = msi3101_convert_stream(s, dst, fbuf->data, fbuf->filled); | |
888 | vb2_set_plane_payload(&fbuf->vb, 0, ret); | |
889 | return 0; | |
890 | } | |
891 | #endif | |
892 | ||
893 | static void msi3101_buf_cleanup(struct vb2_buffer *vb) | |
894 | { | |
895 | struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); | |
896 | struct msi3101_frame_buf *buf = | |
897 | container_of(vb, struct msi3101_frame_buf, vb); | |
898 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
899 | ||
900 | vfree(buf->data); | |
901 | } | |
902 | static void msi3101_buf_queue(struct vb2_buffer *vb) | |
903 | { | |
904 | struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); | |
905 | struct msi3101_frame_buf *buf = | |
906 | container_of(vb, struct msi3101_frame_buf, vb); | |
907 | unsigned long flags = 0; | |
908 | ||
909 | /* Check the device has not disconnected between prep and queuing */ | |
910 | if (!s->udev) { | |
911 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); | |
912 | return; | |
913 | } | |
914 | ||
915 | spin_lock_irqsave(&s->queued_bufs_lock, flags); | |
916 | list_add_tail(&buf->list, &s->queued_bufs); | |
917 | spin_unlock_irqrestore(&s->queued_bufs_lock, flags); | |
918 | } | |
919 | ||
920 | #define CMD_WREG 0x41 | |
921 | #define CMD_START_STREAMING 0x43 | |
922 | #define CMD_STOP_STREAMING 0x45 | |
923 | #define CMD_READ_UNKNOW 0x48 | |
924 | ||
925 | #define msi3101_dbg_usb_control_msg(udev, r, t, v, _i, b, l) { \ | |
926 | char *direction; \ | |
927 | if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \ | |
928 | direction = ">>>"; \ | |
929 | else \ | |
930 | direction = "<<<"; \ | |
931 | dev_dbg(&udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \ | |
932 | "%s %*ph\n", __func__, t, r, v & 0xff, v >> 8, \ | |
933 | _i & 0xff, _i >> 8, l & 0xff, l >> 8, direction, l, b); \ | |
934 | } | |
935 | ||
936 | static int msi3101_ctrl_msg(struct msi3101_state *s, u8 cmd, u32 data) | |
937 | { | |
938 | int ret; | |
939 | u8 request = cmd; | |
940 | u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR; | |
941 | u16 value = (data >> 0) & 0xffff; | |
942 | u16 index = (data >> 16) & 0xffff; | |
943 | ||
944 | msi3101_dbg_usb_control_msg(s->udev, | |
945 | request, requesttype, value, index, NULL, 0); | |
946 | ||
947 | ret = usb_control_msg(s->udev, usb_rcvctrlpipe(s->udev, 0), | |
948 | request, requesttype, value, index, NULL, 0, 2000); | |
949 | ||
950 | if (ret) | |
951 | dev_err(&s->udev->dev, "%s: failed %d, cmd %02x, data %04x\n", | |
952 | __func__, ret, cmd, data); | |
953 | ||
954 | return ret; | |
955 | }; | |
956 | ||
957 | static int msi3101_tuner_write(struct msi3101_state *s, u32 data) | |
958 | { | |
959 | return msi3101_ctrl_msg(s, CMD_WREG, data << 8 | 0x09); | |
960 | }; | |
961 | ||
962 | #define F_REF 24000000 | |
963 | static int msi3101_set_usb_adc(struct msi3101_state *s) | |
964 | { | |
965 | int ret, div_n, div_m, div_r_out, f_sr; | |
966 | u32 reg4, reg3; | |
967 | /* | |
968 | * FIXME: Synthesizer config is just a educated guess... | |
969 | * It seems to give reasonable values when N is 5-12 and output | |
970 | * divider R is 2, which means sampling rates 5-12 Msps in practise. | |
971 | * | |
972 | * reg 3 ADC synthesizer config | |
973 | * [7:0] 0x03, register address | |
974 | * [8] 1, always | |
975 | * [9] ? | |
976 | * [12:10] output divider | |
977 | * [13] 0 ? | |
978 | * [14] 0 ? | |
979 | * [15] increase sr by max fract | |
980 | * [16:19] N | |
981 | * [23:20] ? | |
982 | * [24:31] 0x01 | |
983 | * | |
984 | * output divider | |
985 | * val div | |
986 | * 0 - (invalid) | |
987 | * 1 2 | |
988 | * 2 3 | |
989 | * 3 4 | |
990 | * 4 5 | |
991 | * 5 6 | |
992 | * 6 7 | |
993 | * 7 8 | |
994 | */ | |
995 | ||
996 | f_sr = s->ctrl_sampling_rate->val64; | |
997 | reg3 = 0x01c00303; | |
998 | ||
999 | for (div_n = 12; div_n > 5; div_n--) { | |
1000 | if (f_sr >= div_n * 1000000) | |
1001 | break; | |
1002 | } | |
1003 | ||
1004 | reg3 |= div_n << 16; | |
1005 | ||
1006 | for (div_r_out = 2; div_r_out < 8; div_r_out++) { | |
1007 | if (f_sr >= div_n * F_REF / div_r_out / 12) | |
1008 | break; | |
1009 | } | |
1010 | ||
1011 | reg3 |= (div_r_out - 1) << 10; | |
1012 | div_m = f_sr % (div_n * F_REF / div_r_out / 12); | |
1013 | ||
1014 | if (div_m >= 500000) { | |
1015 | reg3 |= 1 << 15; | |
1016 | div_m -= 500000; | |
1017 | } | |
1018 | ||
1019 | reg4 = ((div_m * 0x0ffffful / 500000) << 8) | 0x04; | |
1020 | ||
1021 | dev_dbg(&s->udev->dev, "%s: sr=%d n=%d m=%d r_out=%d reg4=%08x\n", | |
1022 | __func__, f_sr, div_n, div_m, div_r_out, reg4); | |
1023 | ||
1024 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00608008); | |
1025 | if (ret) | |
1026 | goto err; | |
1027 | ||
1028 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00000c05); | |
1029 | if (ret) | |
1030 | goto err; | |
1031 | ||
1032 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00020000); | |
1033 | if (ret) | |
1034 | goto err; | |
1035 | ||
1036 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00480102); | |
1037 | if (ret) | |
1038 | goto err; | |
1039 | ||
1040 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00f38008); | |
1041 | if (ret) | |
1042 | goto err; | |
1043 | ||
1044 | ret = msi3101_ctrl_msg(s, CMD_WREG, 0x0000a507); | |
1045 | if (ret) | |
1046 | goto err; | |
1047 | ||
1048 | ret = msi3101_ctrl_msg(s, CMD_WREG, reg4); | |
1049 | if (ret) | |
1050 | goto err; | |
1051 | ||
1052 | ret = msi3101_ctrl_msg(s, CMD_WREG, reg3); | |
1053 | if (ret) | |
1054 | goto err; | |
1055 | err: | |
1056 | return ret; | |
1057 | }; | |
1058 | ||
1059 | static int msi3101_set_tuner(struct msi3101_state *s) | |
1060 | { | |
1061 | int i, ret, len; | |
1062 | u32 reg, synthstep, thresh, n, frac; | |
1063 | u64 fsynth; | |
1064 | u8 mode, lo_div; | |
1065 | const struct msi3101_gain *gain_lut; | |
1066 | static const struct { | |
1067 | u32 rf; | |
1068 | u8 mode; | |
1069 | u8 lo_div; | |
1070 | } band_lut[] = { | |
1071 | { 30000000, 0x01, 16}, /* AM_MODE1 */ | |
1072 | {108000000, 0x02, 32}, /* VHF_MODE */ | |
1073 | {240000000, 0x04, 16}, /* B3_MODE */ | |
1074 | {960000000, 0x08, 4}, /* B45_MODE */ | |
1075 | {167500000, 0x10, 2}, /* BL_MODE */ | |
1076 | }; | |
1077 | static const struct { | |
1078 | u32 freq; | |
1079 | u8 val; | |
1080 | } if_freq_lut[] = { | |
1081 | { 0, 0x03}, /* Zero IF */ | |
1082 | { 450000, 0x02}, /* 450 kHz IF */ | |
1083 | {1620000, 0x01}, /* 1.62 MHz IF */ | |
1084 | {2048000, 0x00}, /* 2.048 MHz IF */ | |
1085 | }; | |
1086 | static const struct { | |
1087 | u32 freq; | |
1088 | u8 val; | |
1089 | } bandwidth_lut[] = { | |
1090 | { 200000, 0x00}, /* 200 kHz */ | |
1091 | { 300000, 0x01}, /* 300 kHz */ | |
1092 | { 600000, 0x02}, /* 600 kHz */ | |
1093 | {1536000, 0x03}, /* 1.536 MHz */ | |
1094 | {5000000, 0x04}, /* 5 MHz */ | |
1095 | {6000000, 0x05}, /* 6 MHz */ | |
1096 | {7000000, 0x06}, /* 7 MHz */ | |
1097 | {8000000, 0x07}, /* 8 MHz */ | |
1098 | }; | |
1099 | ||
1100 | unsigned int rf_freq = s->ctrl_tuner_rf->val64; | |
1101 | ||
1102 | /* | |
1103 | * bandwidth (Hz) | |
1104 | * 200000, 300000, 600000, 1536000, 5000000, 6000000, 7000000, 8000000 | |
1105 | */ | |
1106 | int bandwidth = s->ctrl_tuner_bw->val; | |
1107 | ||
1108 | /* | |
1109 | * intermediate frequency (Hz) | |
1110 | * 0, 450000, 1620000, 2048000 | |
1111 | */ | |
1112 | int if_freq = s->ctrl_tuner_if->val; | |
1113 | ||
1114 | /* | |
1115 | * gain reduction (dB) | |
1116 | * 0 - 102 below 420 MHz | |
1117 | * 0 - 85 above 420 MHz | |
1118 | */ | |
1119 | int gain = s->ctrl_tuner_gain->val; | |
1120 | ||
1121 | dev_dbg(&s->udev->dev, | |
1122 | "%s: rf_freq=%d bandwidth=%d if_freq=%d gain=%d\n", | |
1123 | __func__, rf_freq, bandwidth, if_freq, gain); | |
1124 | ||
1125 | ret = -EINVAL; | |
1126 | ||
1127 | for (i = 0; i < ARRAY_SIZE(band_lut); i++) { | |
1128 | if (rf_freq <= band_lut[i].rf) { | |
1129 | mode = band_lut[i].mode; | |
1130 | lo_div = band_lut[i].lo_div; | |
1131 | break; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | if (i == ARRAY_SIZE(band_lut)) | |
1136 | goto err; | |
1137 | ||
1138 | for (i = 0; i < ARRAY_SIZE(if_freq_lut); i++) { | |
1139 | if (if_freq == if_freq_lut[i].freq) { | |
1140 | if_freq = if_freq_lut[i].val; | |
1141 | break; | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | if (i == ARRAY_SIZE(if_freq_lut)) | |
1146 | goto err; | |
1147 | ||
1148 | for (i = 0; i < ARRAY_SIZE(bandwidth_lut); i++) { | |
1149 | if (bandwidth == bandwidth_lut[i].freq) { | |
1150 | bandwidth = bandwidth_lut[i].val; | |
1151 | break; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | if (i == ARRAY_SIZE(bandwidth_lut)) | |
1156 | goto err; | |
1157 | ||
1158 | #define FSTEP 10000 | |
1159 | #define FREF1 24000000 | |
1160 | fsynth = (rf_freq + 0) * lo_div; | |
1161 | synthstep = FSTEP * lo_div; | |
1162 | thresh = (FREF1 * 4) / synthstep; | |
1163 | n = fsynth / (FREF1 * 4); | |
1164 | frac = thresh * (fsynth % (FREF1 * 4)) / (FREF1 * 4); | |
1165 | ||
1166 | if (thresh > 4095 || n > 63 || frac > 4095) { | |
1167 | dev_dbg(&s->udev->dev, | |
1168 | "%s: synth setup failed rf=%d thresh=%d n=%d frac=%d\n", | |
1169 | __func__, rf_freq, thresh, n, frac); | |
1170 | ret = -EINVAL; | |
1171 | goto err; | |
1172 | } | |
1173 | ||
1174 | ret = msi3101_tuner_write(s, 0x00000e); | |
1175 | ret = msi3101_tuner_write(s, 0x000003); | |
1176 | ||
1177 | reg = 0 << 0; | |
1178 | reg |= mode << 4; | |
1179 | reg |= 1 << 10; | |
1180 | reg |= if_freq << 12; | |
1181 | reg |= bandwidth << 14; | |
1182 | reg |= 0x02 << 17; | |
1183 | reg |= 0x00 << 20; | |
1184 | ret = msi3101_tuner_write(s, reg); | |
1185 | if (ret) | |
1186 | goto err; | |
1187 | ||
1188 | reg = 5 << 0; | |
1189 | reg |= thresh << 4; | |
1190 | reg |= 1 << 19; | |
1191 | reg |= 1 << 21; | |
1192 | ret = msi3101_tuner_write(s, reg); | |
1193 | if (ret) | |
1194 | goto err; | |
1195 | ||
1196 | reg = 2 << 0; | |
1197 | reg |= frac << 4; | |
1198 | reg |= n << 16; | |
1199 | ret = msi3101_tuner_write(s, reg); | |
1200 | if (ret) | |
1201 | goto err; | |
1202 | ||
1203 | if (rf_freq < 120000000) { | |
1204 | gain_lut = msi3101_gain_lut_120; | |
1205 | len = ARRAY_SIZE(msi3101_gain_lut_120); | |
1206 | } else if (rf_freq < 245000000) { | |
1207 | gain_lut = msi3101_gain_lut_245; | |
1208 | len = ARRAY_SIZE(msi3101_gain_lut_120); | |
1209 | } else { | |
1210 | gain_lut = msi3101_gain_lut_1000; | |
1211 | len = ARRAY_SIZE(msi3101_gain_lut_1000); | |
1212 | } | |
1213 | ||
1214 | for (i = 0; i < len; i++) { | |
1215 | if (gain_lut[i].tot >= gain) | |
1216 | break; | |
1217 | } | |
1218 | ||
1219 | if (i == len) | |
1220 | goto err; | |
1221 | ||
1222 | dev_dbg(&s->udev->dev, | |
1223 | "%s: gain tot=%d baseband=%d lna=%d mixer=%d\n", | |
1224 | __func__, gain_lut[i].tot, gain_lut[i].baseband, | |
1225 | gain_lut[i].lna, gain_lut[i].mixer); | |
1226 | ||
1227 | reg = 1 << 0; | |
1228 | reg |= gain_lut[i].baseband << 4; | |
1229 | reg |= 0 << 10; | |
1230 | reg |= gain_lut[i].mixer << 12; | |
1231 | reg |= gain_lut[i].lna << 13; | |
1232 | reg |= 4 << 14; | |
1233 | reg |= 0 << 17; | |
1234 | ret = msi3101_tuner_write(s, reg); | |
1235 | if (ret) | |
1236 | goto err; | |
1237 | ||
1238 | reg = 6 << 0; | |
1239 | reg |= 63 << 4; | |
1240 | reg |= 4095 << 10; | |
1241 | ret = msi3101_tuner_write(s, reg); | |
1242 | if (ret) | |
1243 | goto err; | |
1244 | ||
1245 | return 0; | |
1246 | err: | |
1247 | dev_dbg(&s->udev->dev, "%s: failed %d\n", __func__, ret); | |
1248 | return ret; | |
1249 | }; | |
1250 | ||
1251 | static int msi3101_start_streaming(struct vb2_queue *vq, unsigned int count) | |
1252 | { | |
1253 | struct msi3101_state *s = vb2_get_drv_priv(vq); | |
1254 | int ret; | |
1255 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
1256 | ||
1257 | if (!s->udev) | |
1258 | return -ENODEV; | |
1259 | ||
1260 | if (mutex_lock_interruptible(&s->v4l2_lock)) | |
1261 | return -ERESTARTSYS; | |
1262 | ||
1263 | ret = msi3101_set_usb_adc(s); | |
1264 | ||
1265 | ret = msi3101_isoc_init(s); | |
1266 | if (ret) | |
1267 | msi3101_cleanup_queued_bufs(s); | |
1268 | ||
1269 | ret = msi3101_ctrl_msg(s, CMD_START_STREAMING, 0); | |
1270 | ||
1271 | mutex_unlock(&s->v4l2_lock); | |
1272 | ||
1273 | return ret; | |
1274 | } | |
1275 | ||
1276 | static int msi3101_stop_streaming(struct vb2_queue *vq) | |
1277 | { | |
1278 | struct msi3101_state *s = vb2_get_drv_priv(vq); | |
1279 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
1280 | ||
1281 | if (mutex_lock_interruptible(&s->v4l2_lock)) | |
1282 | return -ERESTARTSYS; | |
1283 | ||
1284 | msi3101_ctrl_msg(s, CMD_STOP_STREAMING, 0); | |
1285 | ||
1286 | if (s->udev) | |
1287 | msi3101_isoc_cleanup(s); | |
1288 | ||
1289 | msi3101_cleanup_queued_bufs(s); | |
1290 | mutex_unlock(&s->v4l2_lock); | |
1291 | ||
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | static struct vb2_ops msi3101_vb2_ops = { | |
1296 | .queue_setup = msi3101_queue_setup, | |
1297 | .buf_init = msi3101_buf_init, | |
1298 | .buf_prepare = msi3101_buf_prepare, | |
1299 | .buf_finish = msi3101_buf_finish, | |
1300 | .buf_cleanup = msi3101_buf_cleanup, | |
1301 | .buf_queue = msi3101_buf_queue, | |
1302 | .start_streaming = msi3101_start_streaming, | |
1303 | .stop_streaming = msi3101_stop_streaming, | |
1304 | .wait_prepare = vb2_ops_wait_prepare, | |
1305 | .wait_finish = vb2_ops_wait_finish, | |
1306 | }; | |
1307 | ||
1308 | static int msi3101_enum_input(struct file *file, void *fh, struct v4l2_input *i) | |
1309 | { | |
1310 | if (i->index != 0) | |
1311 | return -EINVAL; | |
1312 | ||
1313 | strlcpy(i->name, "SDR data", sizeof(i->name)); | |
1314 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
1315 | ||
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | static int msi3101_g_input(struct file *file, void *fh, unsigned int *i) | |
1320 | { | |
1321 | *i = 0; | |
1322 | ||
1323 | return 0; | |
1324 | } | |
1325 | ||
1326 | static int msi3101_s_input(struct file *file, void *fh, unsigned int i) | |
1327 | { | |
1328 | return i ? -EINVAL : 0; | |
1329 | } | |
1330 | ||
1331 | static int vidioc_s_tuner(struct file *file, void *priv, | |
1332 | const struct v4l2_tuner *v) | |
1333 | { | |
1334 | struct msi3101_state *s = video_drvdata(file); | |
1335 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) | |
1341 | { | |
1342 | struct msi3101_state *s = video_drvdata(file); | |
1343 | dev_dbg(&s->udev->dev, "%s:\n", __func__); | |
1344 | ||
1345 | strcpy(v->name, "SDR RX"); | |
1346 | v->capability = V4L2_TUNER_CAP_LOW; | |
1347 | ||
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | static int vidioc_s_frequency(struct file *file, void *priv, | |
1352 | const struct v4l2_frequency *f) | |
1353 | { | |
1354 | struct msi3101_state *s = video_drvdata(file); | |
1355 | dev_dbg(&s->udev->dev, "%s: frequency=%u Hz (%d)\n", | |
1356 | __func__, f->frequency * 625U / 10U, f->frequency); | |
1357 | ||
1358 | return v4l2_ctrl_s_ctrl_int64(s->ctrl_tuner_rf, | |
1359 | f->frequency * 625U / 10U); | |
1360 | } | |
1361 | ||
1362 | const struct v4l2_ioctl_ops msi3101_ioctl_ops = { | |
1363 | .vidioc_querycap = msi3101_querycap, | |
1364 | ||
1365 | .vidioc_enum_input = msi3101_enum_input, | |
1366 | .vidioc_g_input = msi3101_g_input, | |
1367 | .vidioc_s_input = msi3101_s_input, | |
1368 | ||
1369 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
1370 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
1371 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
1372 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
1373 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
1374 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
1375 | ||
1376 | .vidioc_streamon = vb2_ioctl_streamon, | |
1377 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
1378 | ||
1379 | .vidioc_g_tuner = vidioc_g_tuner, | |
1380 | .vidioc_s_tuner = vidioc_s_tuner, | |
1381 | .vidioc_s_frequency = vidioc_s_frequency, | |
1382 | ||
1383 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
1384 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
1385 | .vidioc_log_status = v4l2_ctrl_log_status, | |
1386 | }; | |
1387 | ||
1388 | static const struct v4l2_file_operations msi3101_fops = { | |
1389 | .owner = THIS_MODULE, | |
1390 | .open = v4l2_fh_open, | |
1391 | .release = vb2_fop_release, | |
1392 | .read = vb2_fop_read, | |
1393 | .poll = vb2_fop_poll, | |
1394 | .mmap = vb2_fop_mmap, | |
1395 | .unlocked_ioctl = video_ioctl2, | |
1396 | }; | |
1397 | ||
1398 | static struct video_device msi3101_template = { | |
1399 | .name = "Mirics MSi3101 SDR Dongle", | |
1400 | .release = video_device_release_empty, | |
1401 | .fops = &msi3101_fops, | |
1402 | .ioctl_ops = &msi3101_ioctl_ops, | |
1403 | }; | |
1404 | ||
1405 | static int msi3101_s_ctrl(struct v4l2_ctrl *ctrl) | |
1406 | { | |
1407 | struct msi3101_state *s = | |
1408 | container_of(ctrl->handler, struct msi3101_state, | |
1409 | ctrl_handler); | |
1410 | int ret; | |
1411 | dev_dbg(&s->udev->dev, | |
1412 | "%s: id=%d name=%s val=%d min=%d max=%d step=%d\n", | |
1413 | __func__, ctrl->id, ctrl->name, ctrl->val, | |
1414 | ctrl->minimum, ctrl->maximum, ctrl->step); | |
1415 | ||
1416 | switch (ctrl->id) { | |
1417 | case MSI3101_CID_SAMPLING_RATE: | |
1418 | case MSI3101_CID_SAMPLING_RESOLUTION: | |
1419 | ret = 0; | |
1420 | break; | |
1421 | case MSI3101_CID_TUNER_RF: | |
1422 | case MSI3101_CID_TUNER_BW: | |
1423 | case MSI3101_CID_TUNER_IF: | |
1424 | case MSI3101_CID_TUNER_GAIN: | |
1425 | ret = msi3101_set_tuner(s); | |
1426 | break; | |
1427 | default: | |
1428 | ret = -EINVAL; | |
1429 | } | |
1430 | ||
1431 | return ret; | |
1432 | } | |
1433 | ||
1434 | static const struct v4l2_ctrl_ops msi3101_ctrl_ops = { | |
1435 | .s_ctrl = msi3101_s_ctrl, | |
1436 | }; | |
1437 | ||
1438 | static void msi3101_video_release(struct v4l2_device *v) | |
1439 | { | |
1440 | struct msi3101_state *s = | |
1441 | container_of(v, struct msi3101_state, v4l2_dev); | |
1442 | ||
1443 | v4l2_ctrl_handler_free(&s->ctrl_handler); | |
1444 | v4l2_device_unregister(&s->v4l2_dev); | |
1445 | kfree(s); | |
1446 | } | |
1447 | ||
1448 | static int msi3101_probe(struct usb_interface *intf, | |
1449 | const struct usb_device_id *id) | |
1450 | { | |
1451 | struct usb_device *udev = interface_to_usbdev(intf); | |
1452 | struct msi3101_state *s = NULL; | |
1453 | int ret; | |
1454 | static const struct v4l2_ctrl_config ctrl_sampling_rate = { | |
1455 | .ops = &msi3101_ctrl_ops, | |
1456 | .id = MSI3101_CID_SAMPLING_RATE, | |
1457 | .type = V4L2_CTRL_TYPE_INTEGER64, | |
1458 | .name = "Sampling Rate", | |
1459 | .min = 500000, | |
1460 | .max = 12000000, | |
1461 | .def = 2048000, | |
1462 | .step = 1, | |
1463 | }; | |
1464 | static const struct v4l2_ctrl_config ctrl_sampling_resolution = { | |
1465 | .ops = &msi3101_ctrl_ops, | |
1466 | .id = MSI3101_CID_SAMPLING_RESOLUTION, | |
1467 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1468 | .flags = V4L2_CTRL_FLAG_INACTIVE, | |
1469 | .name = "Sampling Resolution", | |
1470 | .min = 10, | |
1471 | .max = 10, | |
1472 | .def = 10, | |
1473 | .step = 1, | |
1474 | }; | |
1475 | static const struct v4l2_ctrl_config ctrl_tuner_rf = { | |
1476 | .ops = &msi3101_ctrl_ops, | |
1477 | .id = MSI3101_CID_TUNER_RF, | |
1478 | .type = V4L2_CTRL_TYPE_INTEGER64, | |
1479 | .name = "Tuner RF", | |
1480 | .min = 40000000, | |
1481 | .max = 2000000000, | |
1482 | .def = 100000000, | |
1483 | .step = 1, | |
1484 | }; | |
1485 | static const struct v4l2_ctrl_config ctrl_tuner_bw = { | |
1486 | .ops = &msi3101_ctrl_ops, | |
1487 | .id = MSI3101_CID_TUNER_BW, | |
1488 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1489 | .name = "Tuner BW", | |
1490 | .min = 200000, | |
1491 | .max = 8000000, | |
1492 | .def = 600000, | |
1493 | .step = 1, | |
1494 | }; | |
1495 | static const struct v4l2_ctrl_config ctrl_tuner_if = { | |
1496 | .ops = &msi3101_ctrl_ops, | |
1497 | .id = MSI3101_CID_TUNER_IF, | |
1498 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1499 | .flags = V4L2_CTRL_FLAG_INACTIVE, | |
1500 | .name = "Tuner IF", | |
1501 | .min = 0, | |
1502 | .max = 2048000, | |
1503 | .def = 0, | |
1504 | .step = 1, | |
1505 | }; | |
1506 | static const struct v4l2_ctrl_config ctrl_tuner_gain = { | |
1507 | .ops = &msi3101_ctrl_ops, | |
1508 | .id = MSI3101_CID_TUNER_GAIN, | |
1509 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1510 | .name = "Tuner Gain", | |
1511 | .min = 0, | |
1512 | .max = 102, | |
1513 | .def = 0, | |
1514 | .step = 1, | |
1515 | }; | |
1516 | ||
1517 | s = kzalloc(sizeof(struct msi3101_state), GFP_KERNEL); | |
1518 | if (s == NULL) { | |
1519 | pr_err("Could not allocate memory for msi3101_state\n"); | |
1520 | return -ENOMEM; | |
1521 | } | |
1522 | ||
1523 | mutex_init(&s->v4l2_lock); | |
1524 | mutex_init(&s->vb_queue_lock); | |
1525 | spin_lock_init(&s->queued_bufs_lock); | |
1526 | INIT_LIST_HEAD(&s->queued_bufs); | |
1527 | ||
1528 | s->udev = udev; | |
1529 | ||
1530 | /* Init videobuf2 queue structure */ | |
1531 | s->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1532 | s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; | |
1533 | s->vb_queue.drv_priv = s; | |
1534 | s->vb_queue.buf_struct_size = sizeof(struct msi3101_frame_buf); | |
1535 | s->vb_queue.ops = &msi3101_vb2_ops; | |
1536 | s->vb_queue.mem_ops = &vb2_vmalloc_memops; | |
1537 | s->vb_queue.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
1538 | ret = vb2_queue_init(&s->vb_queue); | |
1539 | if (ret < 0) { | |
1540 | dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); | |
1541 | goto err_free_mem; | |
1542 | } | |
1543 | ||
1544 | /* Init video_device structure */ | |
1545 | s->vdev = msi3101_template; | |
1546 | s->vdev.queue = &s->vb_queue; | |
1547 | s->vdev.queue->lock = &s->vb_queue_lock; | |
1548 | set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev.flags); | |
1549 | video_set_drvdata(&s->vdev, s); | |
1550 | ||
1551 | /* Register controls */ | |
1552 | v4l2_ctrl_handler_init(&s->ctrl_handler, 6); | |
1553 | s->ctrl_sampling_rate = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_rate, NULL); | |
1554 | v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_resolution, NULL); | |
1555 | s->ctrl_tuner_rf = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_rf, NULL); | |
1556 | s->ctrl_tuner_bw = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_bw, NULL); | |
1557 | s->ctrl_tuner_if = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_if, NULL); | |
1558 | s->ctrl_tuner_gain = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_gain, NULL); | |
1559 | if (s->ctrl_handler.error) { | |
1560 | ret = s->ctrl_handler.error; | |
1561 | dev_err(&s->udev->dev, "Could not initialize controls\n"); | |
1562 | goto err_free_controls; | |
1563 | } | |
1564 | ||
1565 | /* Register the v4l2_device structure */ | |
1566 | s->v4l2_dev.release = msi3101_video_release; | |
1567 | ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); | |
1568 | if (ret) { | |
1569 | dev_err(&s->udev->dev, | |
1570 | "Failed to register v4l2-device (%d)\n", ret); | |
1571 | goto err_free_controls; | |
1572 | } | |
1573 | ||
1574 | s->v4l2_dev.ctrl_handler = &s->ctrl_handler; | |
1575 | s->vdev.v4l2_dev = &s->v4l2_dev; | |
1576 | s->vdev.lock = &s->v4l2_lock; | |
1577 | ||
1578 | ret = video_register_device(&s->vdev, VFL_TYPE_GRABBER, -1); | |
1579 | if (ret < 0) { | |
1580 | dev_err(&s->udev->dev, | |
1581 | "Failed to register as video device (%d)\n", | |
1582 | ret); | |
1583 | goto err_unregister_v4l2_dev; | |
1584 | } | |
1585 | dev_info(&s->udev->dev, "Registered as %s\n", | |
1586 | video_device_node_name(&s->vdev)); | |
1587 | ||
1588 | return 0; | |
1589 | ||
1590 | err_unregister_v4l2_dev: | |
1591 | v4l2_device_unregister(&s->v4l2_dev); | |
1592 | err_free_controls: | |
1593 | v4l2_ctrl_handler_free(&s->ctrl_handler); | |
1594 | err_free_mem: | |
1595 | kfree(s); | |
1596 | return ret; | |
1597 | } | |
1598 | ||
1599 | /* USB device ID list */ | |
1600 | static struct usb_device_id msi3101_id_table[] = { | |
1601 | { USB_DEVICE(0x1df7, 0x2500) }, | |
1602 | { } | |
1603 | }; | |
1604 | MODULE_DEVICE_TABLE(usb, msi3101_id_table); | |
1605 | ||
1606 | /* USB subsystem interface */ | |
1607 | static struct usb_driver msi3101_driver = { | |
1608 | .name = KBUILD_MODNAME, | |
1609 | .probe = msi3101_probe, | |
1610 | .disconnect = msi3101_disconnect, | |
1611 | .id_table = msi3101_id_table, | |
1612 | }; | |
1613 | ||
1614 | module_usb_driver(msi3101_driver); | |
1615 | ||
1616 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); | |
1617 | MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle"); | |
1618 | MODULE_LICENSE("GPL"); |