1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * vivid-sdr-cap.c - software defined radio support functions.
4 *
5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 */
7
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/delay.h>
11 #include <linux/kthread.h>
12 #include <linux/freezer.h>
13 #include <linux/math64.h>
14 #include <linux/videodev2.h>
15 #include <linux/v4l2-dv-timings.h>
16 #include <media/v4l2-common.h>
17 #include <media/v4l2-event.h>
18 #include <media/v4l2-dv-timings.h>
19 #include <linux/fixp-arith.h>
20 #include <linux/jiffies.h>
21
22 #include "vivid-core.h"
23 #include "vivid-ctrls.h"
24 #include "vivid-sdr-cap.h"
25
26 /* stream formats */
27 struct vivid_format {
28 u32 pixelformat;
29 u32 buffersize;
30 };
31
32 /* format descriptions for capture and preview */
33 static const struct vivid_format formats[] = {
34 {
35 .pixelformat = V4L2_SDR_FMT_CU8,
36 .buffersize = SDR_CAP_SAMPLES_PER_BUF * 2,
37 }, {
38 .pixelformat = V4L2_SDR_FMT_CS8,
39 .buffersize = SDR_CAP_SAMPLES_PER_BUF * 2,
40 },
41 };
42
43 static const struct v4l2_frequency_band bands_adc[] = {
44 {
45 .tuner = 0,
46 .type = V4L2_TUNER_ADC,
47 .index = 0,
48 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
49 .rangelow = 300000,
50 .rangehigh = 300000,
51 },
52 {
53 .tuner = 0,
54 .type = V4L2_TUNER_ADC,
55 .index = 1,
56 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
57 .rangelow = 900001,
58 .rangehigh = 2800000,
59 },
60 {
61 .tuner = 0,
62 .type = V4L2_TUNER_ADC,
63 .index = 2,
64 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
65 .rangelow = 3200000,
66 .rangehigh = 3200000,
67 },
68 };
69
70 /* ADC band midpoints */
71 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
72 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
73
74 static const struct v4l2_frequency_band bands_fm[] = {
75 {
76 .tuner = 1,
77 .type = V4L2_TUNER_RF,
78 .index = 0,
79 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
80 .rangelow = 50000000,
81 .rangehigh = 2000000000,
82 },
83 };
84
vivid_thread_sdr_cap_tick(struct vivid_dev * dev)85 static void vivid_thread_sdr_cap_tick(struct vivid_dev *dev)
86 {
87 struct vivid_buffer *sdr_cap_buf = NULL;
88
89 dprintk(dev, 1, "SDR Capture Thread Tick\n");
90
91 /* Drop a certain percentage of buffers. */
92 if (dev->perc_dropped_buffers &&
93 prandom_u32_max(100) < dev->perc_dropped_buffers)
94 return;
95
96 spin_lock(&dev->slock);
97 if (!list_empty(&dev->sdr_cap_active)) {
98 sdr_cap_buf = list_entry(dev->sdr_cap_active.next,
99 struct vivid_buffer, list);
100 list_del(&sdr_cap_buf->list);
101 }
102 spin_unlock(&dev->slock);
103
104 if (sdr_cap_buf) {
105 sdr_cap_buf->vb.sequence = dev->sdr_cap_with_seq_wrap_count;
106 v4l2_ctrl_request_setup(sdr_cap_buf->vb.vb2_buf.req_obj.req,
107 &dev->ctrl_hdl_sdr_cap);
108 v4l2_ctrl_request_complete(sdr_cap_buf->vb.vb2_buf.req_obj.req,
109 &dev->ctrl_hdl_sdr_cap);
110 vivid_sdr_cap_process(dev, sdr_cap_buf);
111 sdr_cap_buf->vb.vb2_buf.timestamp =
112 ktime_get_ns() + dev->time_wrap_offset;
113 vb2_buffer_done(&sdr_cap_buf->vb.vb2_buf, dev->dqbuf_error ?
114 VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
115 dev->dqbuf_error = false;
116 }
117 }
118
vivid_thread_sdr_cap(void * data)119 static int vivid_thread_sdr_cap(void *data)
120 {
121 struct vivid_dev *dev = data;
122 u64 samples_since_start;
123 u64 buffers_since_start;
124 u64 next_jiffies_since_start;
125 unsigned long jiffies_since_start;
126 unsigned long cur_jiffies;
127 unsigned wait_jiffies;
128
129 dprintk(dev, 1, "SDR Capture Thread Start\n");
130
131 set_freezable();
132
133 /* Resets frame counters */
134 dev->sdr_cap_seq_offset = 0;
135 dev->sdr_cap_seq_count = 0;
136 dev->jiffies_sdr_cap = jiffies;
137 dev->sdr_cap_seq_resync = false;
138 if (dev->time_wrap)
139 dev->time_wrap_offset = dev->time_wrap - ktime_get_ns();
140 else
141 dev->time_wrap_offset = 0;
142
143 for (;;) {
144 try_to_freeze();
145 if (kthread_should_stop())
146 break;
147
148 if (!mutex_trylock(&dev->mutex)) {
149 schedule();
150 continue;
151 }
152
153 cur_jiffies = jiffies;
154 if (dev->sdr_cap_seq_resync) {
155 dev->jiffies_sdr_cap = cur_jiffies;
156 dev->sdr_cap_seq_offset = dev->sdr_cap_seq_count + 1;
157 dev->sdr_cap_seq_count = 0;
158 dev->sdr_cap_seq_resync = false;
159 }
160 /* Calculate the number of jiffies since we started streaming */
161 jiffies_since_start = cur_jiffies - dev->jiffies_sdr_cap;
162 /* Get the number of buffers streamed since the start */
163 buffers_since_start =
164 (u64)jiffies_since_start * dev->sdr_adc_freq +
165 (HZ * SDR_CAP_SAMPLES_PER_BUF) / 2;
166 do_div(buffers_since_start, HZ * SDR_CAP_SAMPLES_PER_BUF);
167
168 /*
169 * After more than 0xf0000000 (rounded down to a multiple of
170 * 'jiffies-per-day' to ease jiffies_to_msecs calculation)
171 * jiffies have passed since we started streaming reset the
172 * counters and keep track of the sequence offset.
173 */
174 if (jiffies_since_start > JIFFIES_RESYNC) {
175 dev->jiffies_sdr_cap = cur_jiffies;
176 dev->sdr_cap_seq_offset = buffers_since_start;
177 buffers_since_start = 0;
178 }
179 dev->sdr_cap_seq_count =
180 buffers_since_start + dev->sdr_cap_seq_offset;
181 dev->sdr_cap_with_seq_wrap_count = dev->sdr_cap_seq_count - dev->sdr_cap_seq_start;
182
183 vivid_thread_sdr_cap_tick(dev);
184 mutex_unlock(&dev->mutex);
185
186 /*
187 * Calculate the number of samples streamed since we started,
188 * not including the current buffer.
189 */
190 samples_since_start = buffers_since_start * SDR_CAP_SAMPLES_PER_BUF;
191
192 /* And the number of jiffies since we started */
193 jiffies_since_start = jiffies - dev->jiffies_sdr_cap;
194
195 /* Increase by the number of samples in one buffer */
196 samples_since_start += SDR_CAP_SAMPLES_PER_BUF;
197 /*
198 * Calculate when that next buffer is supposed to start
199 * in jiffies since we started streaming.
200 */
201 next_jiffies_since_start = samples_since_start * HZ +
202 dev->sdr_adc_freq / 2;
203 do_div(next_jiffies_since_start, dev->sdr_adc_freq);
204 /* If it is in the past, then just schedule asap */
205 if (next_jiffies_since_start < jiffies_since_start)
206 next_jiffies_since_start = jiffies_since_start;
207
208 wait_jiffies = next_jiffies_since_start - jiffies_since_start;
209 while (time_is_after_jiffies(cur_jiffies + wait_jiffies) &&
210 !kthread_should_stop())
211 schedule();
212 }
213 dprintk(dev, 1, "SDR Capture Thread End\n");
214 return 0;
215 }
216
sdr_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])217 static int sdr_cap_queue_setup(struct vb2_queue *vq,
218 unsigned *nbuffers, unsigned *nplanes,
219 unsigned sizes[], struct device *alloc_devs[])
220 {
221 /* 2 = max 16-bit sample returned */
222 sizes[0] = SDR_CAP_SAMPLES_PER_BUF * 2;
223 *nplanes = 1;
224 return 0;
225 }
226
sdr_cap_buf_prepare(struct vb2_buffer * vb)227 static int sdr_cap_buf_prepare(struct vb2_buffer *vb)
228 {
229 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
230 unsigned size = SDR_CAP_SAMPLES_PER_BUF * 2;
231
232 dprintk(dev, 1, "%s\n", __func__);
233
234 if (dev->buf_prepare_error) {
235 /*
236 * Error injection: test what happens if buf_prepare() returns
237 * an error.
238 */
239 dev->buf_prepare_error = false;
240 return -EINVAL;
241 }
242 if (vb2_plane_size(vb, 0) < size) {
243 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
244 __func__, vb2_plane_size(vb, 0), size);
245 return -EINVAL;
246 }
247 vb2_set_plane_payload(vb, 0, size);
248
249 return 0;
250 }
251
sdr_cap_buf_queue(struct vb2_buffer * vb)252 static void sdr_cap_buf_queue(struct vb2_buffer *vb)
253 {
254 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
255 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
256 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
257
258 dprintk(dev, 1, "%s\n", __func__);
259
260 spin_lock(&dev->slock);
261 list_add_tail(&buf->list, &dev->sdr_cap_active);
262 spin_unlock(&dev->slock);
263 }
264
sdr_cap_start_streaming(struct vb2_queue * vq,unsigned count)265 static int sdr_cap_start_streaming(struct vb2_queue *vq, unsigned count)
266 {
267 struct vivid_dev *dev = vb2_get_drv_priv(vq);
268 int err = 0;
269
270 dprintk(dev, 1, "%s\n", __func__);
271 dev->sdr_cap_seq_start = dev->seq_wrap * 128;
272 if (dev->start_streaming_error) {
273 dev->start_streaming_error = false;
274 err = -EINVAL;
275 } else if (dev->kthread_sdr_cap == NULL) {
276 dev->kthread_sdr_cap = kthread_run(vivid_thread_sdr_cap, dev,
277 "%s-sdr-cap", dev->v4l2_dev.name);
278
279 if (IS_ERR(dev->kthread_sdr_cap)) {
280 v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
281 err = PTR_ERR(dev->kthread_sdr_cap);
282 dev->kthread_sdr_cap = NULL;
283 }
284 }
285 if (err) {
286 struct vivid_buffer *buf, *tmp;
287
288 list_for_each_entry_safe(buf, tmp, &dev->sdr_cap_active, list) {
289 list_del(&buf->list);
290 vb2_buffer_done(&buf->vb.vb2_buf,
291 VB2_BUF_STATE_QUEUED);
292 }
293 }
294 return err;
295 }
296
297 /* abort streaming and wait for last buffer */
sdr_cap_stop_streaming(struct vb2_queue * vq)298 static void sdr_cap_stop_streaming(struct vb2_queue *vq)
299 {
300 struct vivid_dev *dev = vb2_get_drv_priv(vq);
301
302 if (dev->kthread_sdr_cap == NULL)
303 return;
304
305 while (!list_empty(&dev->sdr_cap_active)) {
306 struct vivid_buffer *buf;
307
308 buf = list_entry(dev->sdr_cap_active.next,
309 struct vivid_buffer, list);
310 list_del(&buf->list);
311 v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req,
312 &dev->ctrl_hdl_sdr_cap);
313 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
314 }
315
316 /* shutdown control thread */
317 kthread_stop(dev->kthread_sdr_cap);
318 dev->kthread_sdr_cap = NULL;
319 }
320
sdr_cap_buf_request_complete(struct vb2_buffer * vb)321 static void sdr_cap_buf_request_complete(struct vb2_buffer *vb)
322 {
323 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
324
325 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_sdr_cap);
326 }
327
328 const struct vb2_ops vivid_sdr_cap_qops = {
329 .queue_setup = sdr_cap_queue_setup,
330 .buf_prepare = sdr_cap_buf_prepare,
331 .buf_queue = sdr_cap_buf_queue,
332 .start_streaming = sdr_cap_start_streaming,
333 .stop_streaming = sdr_cap_stop_streaming,
334 .buf_request_complete = sdr_cap_buf_request_complete,
335 .wait_prepare = vb2_ops_wait_prepare,
336 .wait_finish = vb2_ops_wait_finish,
337 };
338
vivid_sdr_enum_freq_bands(struct file * file,void * fh,struct v4l2_frequency_band * band)339 int vivid_sdr_enum_freq_bands(struct file *file, void *fh,
340 struct v4l2_frequency_band *band)
341 {
342 switch (band->tuner) {
343 case 0:
344 if (band->index >= ARRAY_SIZE(bands_adc))
345 return -EINVAL;
346 *band = bands_adc[band->index];
347 return 0;
348 case 1:
349 if (band->index >= ARRAY_SIZE(bands_fm))
350 return -EINVAL;
351 *band = bands_fm[band->index];
352 return 0;
353 default:
354 return -EINVAL;
355 }
356 }
357
vivid_sdr_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)358 int vivid_sdr_g_frequency(struct file *file, void *fh,
359 struct v4l2_frequency *vf)
360 {
361 struct vivid_dev *dev = video_drvdata(file);
362
363 switch (vf->tuner) {
364 case 0:
365 vf->frequency = dev->sdr_adc_freq;
366 vf->type = V4L2_TUNER_ADC;
367 return 0;
368 case 1:
369 vf->frequency = dev->sdr_fm_freq;
370 vf->type = V4L2_TUNER_RF;
371 return 0;
372 default:
373 return -EINVAL;
374 }
375 }
376
vivid_sdr_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)377 int vivid_sdr_s_frequency(struct file *file, void *fh,
378 const struct v4l2_frequency *vf)
379 {
380 struct vivid_dev *dev = video_drvdata(file);
381 unsigned freq = vf->frequency;
382 unsigned band;
383
384 switch (vf->tuner) {
385 case 0:
386 if (vf->type != V4L2_TUNER_ADC)
387 return -EINVAL;
388 if (freq < BAND_ADC_0)
389 band = 0;
390 else if (freq < BAND_ADC_1)
391 band = 1;
392 else
393 band = 2;
394
395 freq = clamp_t(unsigned, freq,
396 bands_adc[band].rangelow,
397 bands_adc[band].rangehigh);
398
399 if (vb2_is_streaming(&dev->vb_sdr_cap_q) &&
400 freq != dev->sdr_adc_freq) {
401 /* resync the thread's timings */
402 dev->sdr_cap_seq_resync = true;
403 }
404 dev->sdr_adc_freq = freq;
405 return 0;
406 case 1:
407 if (vf->type != V4L2_TUNER_RF)
408 return -EINVAL;
409 dev->sdr_fm_freq = clamp_t(unsigned, freq,
410 bands_fm[0].rangelow,
411 bands_fm[0].rangehigh);
412 return 0;
413 default:
414 return -EINVAL;
415 }
416 }
417
vivid_sdr_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)418 int vivid_sdr_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
419 {
420 switch (vt->index) {
421 case 0:
422 strscpy(vt->name, "ADC", sizeof(vt->name));
423 vt->type = V4L2_TUNER_ADC;
424 vt->capability =
425 V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
426 vt->rangelow = bands_adc[0].rangelow;
427 vt->rangehigh = bands_adc[2].rangehigh;
428 return 0;
429 case 1:
430 strscpy(vt->name, "RF", sizeof(vt->name));
431 vt->type = V4L2_TUNER_RF;
432 vt->capability =
433 V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
434 vt->rangelow = bands_fm[0].rangelow;
435 vt->rangehigh = bands_fm[0].rangehigh;
436 return 0;
437 default:
438 return -EINVAL;
439 }
440 }
441
vivid_sdr_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)442 int vivid_sdr_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
443 {
444 if (vt->index > 1)
445 return -EINVAL;
446 return 0;
447 }
448
vidioc_enum_fmt_sdr_cap(struct file * file,void * fh,struct v4l2_fmtdesc * f)449 int vidioc_enum_fmt_sdr_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
450 {
451 if (f->index >= ARRAY_SIZE(formats))
452 return -EINVAL;
453 f->pixelformat = formats[f->index].pixelformat;
454 return 0;
455 }
456
vidioc_g_fmt_sdr_cap(struct file * file,void * fh,struct v4l2_format * f)457 int vidioc_g_fmt_sdr_cap(struct file *file, void *fh, struct v4l2_format *f)
458 {
459 struct vivid_dev *dev = video_drvdata(file);
460
461 f->fmt.sdr.pixelformat = dev->sdr_pixelformat;
462 f->fmt.sdr.buffersize = dev->sdr_buffersize;
463 return 0;
464 }
465
vidioc_s_fmt_sdr_cap(struct file * file,void * fh,struct v4l2_format * f)466 int vidioc_s_fmt_sdr_cap(struct file *file, void *fh, struct v4l2_format *f)
467 {
468 struct vivid_dev *dev = video_drvdata(file);
469 struct vb2_queue *q = &dev->vb_sdr_cap_q;
470 int i;
471
472 if (vb2_is_busy(q))
473 return -EBUSY;
474
475 for (i = 0; i < ARRAY_SIZE(formats); i++) {
476 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
477 dev->sdr_pixelformat = formats[i].pixelformat;
478 dev->sdr_buffersize = formats[i].buffersize;
479 f->fmt.sdr.buffersize = formats[i].buffersize;
480 return 0;
481 }
482 }
483 dev->sdr_pixelformat = formats[0].pixelformat;
484 dev->sdr_buffersize = formats[0].buffersize;
485 f->fmt.sdr.pixelformat = formats[0].pixelformat;
486 f->fmt.sdr.buffersize = formats[0].buffersize;
487 return 0;
488 }
489
vidioc_try_fmt_sdr_cap(struct file * file,void * fh,struct v4l2_format * f)490 int vidioc_try_fmt_sdr_cap(struct file *file, void *fh, struct v4l2_format *f)
491 {
492 int i;
493
494 for (i = 0; i < ARRAY_SIZE(formats); i++) {
495 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
496 f->fmt.sdr.buffersize = formats[i].buffersize;
497 return 0;
498 }
499 }
500 f->fmt.sdr.pixelformat = formats[0].pixelformat;
501 f->fmt.sdr.buffersize = formats[0].buffersize;
502 return 0;
503 }
504
505 #define FIXP_N (15)
506 #define FIXP_FRAC (1 << FIXP_N)
507 #define FIXP_2PI ((int)(2 * 3.141592653589 * FIXP_FRAC))
508 #define M_100000PI (3.14159 * 100000)
509
vivid_sdr_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)510 void vivid_sdr_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
511 {
512 u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
513 unsigned long i;
514 unsigned long plane_size = vb2_plane_size(&buf->vb.vb2_buf, 0);
515 s64 s64tmp;
516 s32 src_phase_step;
517 s32 mod_phase_step;
518 s32 fixp_i;
519 s32 fixp_q;
520
521 /* calculate phase step */
522 #define BEEP_FREQ 1000 /* 1kHz beep */
523 src_phase_step = DIV_ROUND_CLOSEST(FIXP_2PI * BEEP_FREQ,
524 dev->sdr_adc_freq);
525
526 for (i = 0; i < plane_size; i += 2) {
527 mod_phase_step = fixp_cos32_rad(dev->sdr_fixp_src_phase,
528 FIXP_2PI) >> (31 - FIXP_N);
529
530 dev->sdr_fixp_src_phase += src_phase_step;
531 s64tmp = (s64) mod_phase_step * dev->sdr_fm_deviation;
532 dev->sdr_fixp_mod_phase += div_s64(s64tmp, M_100000PI);
533
534 /*
535 * Transfer phase angle to [0, 2xPI] in order to avoid variable
536 * overflow and make it suitable for cosine implementation
537 * used, which does not support negative angles.
538 */
539 dev->sdr_fixp_src_phase %= FIXP_2PI;
540 dev->sdr_fixp_mod_phase %= FIXP_2PI;
541
542 if (dev->sdr_fixp_mod_phase < 0)
543 dev->sdr_fixp_mod_phase += FIXP_2PI;
544
545 fixp_i = fixp_cos32_rad(dev->sdr_fixp_mod_phase, FIXP_2PI);
546 fixp_q = fixp_sin32_rad(dev->sdr_fixp_mod_phase, FIXP_2PI);
547
548 /* Normalize fraction values represented with 32 bit precision
549 * to fixed point representation with FIXP_N bits */
550 fixp_i >>= (31 - FIXP_N);
551 fixp_q >>= (31 - FIXP_N);
552
553 switch (dev->sdr_pixelformat) {
554 case V4L2_SDR_FMT_CU8:
555 /* convert 'fixp float' to u8 [0, +255] */
556 /* u8 = X * 127.5 + 127.5; X is float [-1.0, +1.0] */
557 fixp_i = fixp_i * 1275 + FIXP_FRAC * 1275;
558 fixp_q = fixp_q * 1275 + FIXP_FRAC * 1275;
559 *vbuf++ = DIV_ROUND_CLOSEST(fixp_i, FIXP_FRAC * 10);
560 *vbuf++ = DIV_ROUND_CLOSEST(fixp_q, FIXP_FRAC * 10);
561 break;
562 case V4L2_SDR_FMT_CS8:
563 /* convert 'fixp float' to s8 [-128, +127] */
564 /* s8 = X * 127.5 - 0.5; X is float [-1.0, +1.0] */
565 fixp_i = fixp_i * 1275 - FIXP_FRAC * 5;
566 fixp_q = fixp_q * 1275 - FIXP_FRAC * 5;
567 *vbuf++ = DIV_ROUND_CLOSEST(fixp_i, FIXP_FRAC * 10);
568 *vbuf++ = DIV_ROUND_CLOSEST(fixp_q, FIXP_FRAC * 10);
569 break;
570 default:
571 break;
572 }
573 }
574 }
575