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9#include <linux/slab.h>
10#include <linux/delay.h>
11#include <linux/module.h>
12#include <sound/core.h>
13#include <sound/control.h>
14#include <sound/pcm.h>
15#include <sound/ak4113.h>
16#include <sound/asoundef.h>
17#include <sound/info.h>
18
19MODULE_AUTHOR("Pavel Hofman <pavel.hofman@ivitera.com>");
20MODULE_DESCRIPTION("AK4113 IEC958 (S/PDIF) receiver by Asahi Kasei");
21MODULE_LICENSE("GPL");
22
23#define AK4113_ADDR 0x00
24
25static void ak4113_stats(struct work_struct *work);
26static void ak4113_init_regs(struct ak4113 *chip);
27
28
29static void reg_write(struct ak4113 *ak4113, unsigned char reg,
30 unsigned char val)
31{
32 ak4113->write(ak4113->private_data, reg, val);
33 if (reg < sizeof(ak4113->regmap))
34 ak4113->regmap[reg] = val;
35}
36
37static inline unsigned char reg_read(struct ak4113 *ak4113, unsigned char reg)
38{
39 return ak4113->read(ak4113->private_data, reg);
40}
41
42static void snd_ak4113_free(struct ak4113 *chip)
43{
44 atomic_inc(&chip->wq_processing);
45 cancel_delayed_work_sync(&chip->work);
46 kfree(chip);
47}
48
49static int snd_ak4113_dev_free(struct snd_device *device)
50{
51 struct ak4113 *chip = device->device_data;
52 snd_ak4113_free(chip);
53 return 0;
54}
55
56int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read,
57 ak4113_write_t *write, const unsigned char *pgm,
58 void *private_data, struct ak4113 **r_ak4113)
59{
60 struct ak4113 *chip;
61 int err;
62 unsigned char reg;
63 static const struct snd_device_ops ops = {
64 .dev_free = snd_ak4113_dev_free,
65 };
66
67 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
68 if (chip == NULL)
69 return -ENOMEM;
70 spin_lock_init(&chip->lock);
71 chip->card = card;
72 chip->read = read;
73 chip->write = write;
74 chip->private_data = private_data;
75 INIT_DELAYED_WORK(&chip->work, ak4113_stats);
76 atomic_set(&chip->wq_processing, 0);
77 mutex_init(&chip->reinit_mutex);
78
79 for (reg = 0; reg < AK4113_WRITABLE_REGS ; reg++)
80 chip->regmap[reg] = pgm[reg];
81 ak4113_init_regs(chip);
82
83 chip->rcs0 = reg_read(chip, AK4113_REG_RCS0) & ~(AK4113_QINT |
84 AK4113_CINT | AK4113_STC);
85 chip->rcs1 = reg_read(chip, AK4113_REG_RCS1);
86 chip->rcs2 = reg_read(chip, AK4113_REG_RCS2);
87 err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops);
88 if (err < 0)
89 goto __fail;
90
91 if (r_ak4113)
92 *r_ak4113 = chip;
93 return 0;
94
95__fail:
96 snd_ak4113_free(chip);
97 return err;
98}
99EXPORT_SYMBOL_GPL(snd_ak4113_create);
100
101void snd_ak4113_reg_write(struct ak4113 *chip, unsigned char reg,
102 unsigned char mask, unsigned char val)
103{
104 if (reg >= AK4113_WRITABLE_REGS)
105 return;
106 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
107}
108EXPORT_SYMBOL_GPL(snd_ak4113_reg_write);
109
110static void ak4113_init_regs(struct ak4113 *chip)
111{
112 unsigned char old = chip->regmap[AK4113_REG_PWRDN], reg;
113
114
115 reg_write(chip, AK4113_REG_PWRDN, old & ~(AK4113_RST|AK4113_PWN));
116 udelay(200);
117
118 reg_write(chip, AK4113_REG_PWRDN, (old | AK4113_RST) & ~AK4113_PWN);
119 udelay(200);
120 for (reg = 1; reg < AK4113_WRITABLE_REGS; reg++)
121 reg_write(chip, reg, chip->regmap[reg]);
122
123 reg_write(chip, AK4113_REG_PWRDN, old | AK4113_RST | AK4113_PWN);
124}
125
126void snd_ak4113_reinit(struct ak4113 *chip)
127{
128 if (atomic_inc_return(&chip->wq_processing) == 1)
129 cancel_delayed_work_sync(&chip->work);
130 mutex_lock(&chip->reinit_mutex);
131 ak4113_init_regs(chip);
132 mutex_unlock(&chip->reinit_mutex);
133
134 if (atomic_dec_and_test(&chip->wq_processing))
135 schedule_delayed_work(&chip->work, HZ / 10);
136}
137EXPORT_SYMBOL_GPL(snd_ak4113_reinit);
138
139static unsigned int external_rate(unsigned char rcs1)
140{
141 switch (rcs1 & (AK4113_FS0|AK4113_FS1|AK4113_FS2|AK4113_FS3)) {
142 case AK4113_FS_8000HZ:
143 return 8000;
144 case AK4113_FS_11025HZ:
145 return 11025;
146 case AK4113_FS_16000HZ:
147 return 16000;
148 case AK4113_FS_22050HZ:
149 return 22050;
150 case AK4113_FS_24000HZ:
151 return 24000;
152 case AK4113_FS_32000HZ:
153 return 32000;
154 case AK4113_FS_44100HZ:
155 return 44100;
156 case AK4113_FS_48000HZ:
157 return 48000;
158 case AK4113_FS_64000HZ:
159 return 64000;
160 case AK4113_FS_88200HZ:
161 return 88200;
162 case AK4113_FS_96000HZ:
163 return 96000;
164 case AK4113_FS_176400HZ:
165 return 176400;
166 case AK4113_FS_192000HZ:
167 return 192000;
168 default:
169 return 0;
170 }
171}
172
173static int snd_ak4113_in_error_info(struct snd_kcontrol *kcontrol,
174 struct snd_ctl_elem_info *uinfo)
175{
176 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
177 uinfo->count = 1;
178 uinfo->value.integer.min = 0;
179 uinfo->value.integer.max = LONG_MAX;
180 return 0;
181}
182
183static int snd_ak4113_in_error_get(struct snd_kcontrol *kcontrol,
184 struct snd_ctl_elem_value *ucontrol)
185{
186 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
187
188 spin_lock_irq(&chip->lock);
189 ucontrol->value.integer.value[0] =
190 chip->errors[kcontrol->private_value];
191 chip->errors[kcontrol->private_value] = 0;
192 spin_unlock_irq(&chip->lock);
193 return 0;
194}
195
196#define snd_ak4113_in_bit_info snd_ctl_boolean_mono_info
197
198static int snd_ak4113_in_bit_get(struct snd_kcontrol *kcontrol,
199 struct snd_ctl_elem_value *ucontrol)
200{
201 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
202 unsigned char reg = kcontrol->private_value & 0xff;
203 unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
204 unsigned char inv = (kcontrol->private_value >> 31) & 1;
205
206 ucontrol->value.integer.value[0] =
207 ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
208 return 0;
209}
210
211static int snd_ak4113_rx_info(struct snd_kcontrol *kcontrol,
212 struct snd_ctl_elem_info *uinfo)
213{
214 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
215 uinfo->count = 1;
216 uinfo->value.integer.min = 0;
217 uinfo->value.integer.max = 5;
218 return 0;
219}
220
221static int snd_ak4113_rx_get(struct snd_kcontrol *kcontrol,
222 struct snd_ctl_elem_value *ucontrol)
223{
224 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
225
226 ucontrol->value.integer.value[0] =
227 (AK4113_IPS(chip->regmap[AK4113_REG_IO1]));
228 return 0;
229}
230
231static int snd_ak4113_rx_put(struct snd_kcontrol *kcontrol,
232 struct snd_ctl_elem_value *ucontrol)
233{
234 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
235 int change;
236 u8 old_val;
237
238 spin_lock_irq(&chip->lock);
239 old_val = chip->regmap[AK4113_REG_IO1];
240 change = ucontrol->value.integer.value[0] != AK4113_IPS(old_val);
241 if (change)
242 reg_write(chip, AK4113_REG_IO1,
243 (old_val & (~AK4113_IPS(0xff))) |
244 (AK4113_IPS(ucontrol->value.integer.value[0])));
245 spin_unlock_irq(&chip->lock);
246 return change;
247}
248
249static int snd_ak4113_rate_info(struct snd_kcontrol *kcontrol,
250 struct snd_ctl_elem_info *uinfo)
251{
252 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
253 uinfo->count = 1;
254 uinfo->value.integer.min = 0;
255 uinfo->value.integer.max = 192000;
256 return 0;
257}
258
259static int snd_ak4113_rate_get(struct snd_kcontrol *kcontrol,
260 struct snd_ctl_elem_value *ucontrol)
261{
262 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
263
264 ucontrol->value.integer.value[0] = external_rate(reg_read(chip,
265 AK4113_REG_RCS1));
266 return 0;
267}
268
269static int snd_ak4113_spdif_info(struct snd_kcontrol *kcontrol,
270 struct snd_ctl_elem_info *uinfo)
271{
272 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
273 uinfo->count = 1;
274 return 0;
275}
276
277static int snd_ak4113_spdif_get(struct snd_kcontrol *kcontrol,
278 struct snd_ctl_elem_value *ucontrol)
279{
280 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
281 unsigned i;
282
283 for (i = 0; i < AK4113_REG_RXCSB_SIZE; i++)
284 ucontrol->value.iec958.status[i] = reg_read(chip,
285 AK4113_REG_RXCSB0 + i);
286 return 0;
287}
288
289static int snd_ak4113_spdif_mask_info(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_info *uinfo)
291{
292 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
293 uinfo->count = 1;
294 return 0;
295}
296
297static int snd_ak4113_spdif_mask_get(struct snd_kcontrol *kcontrol,
298 struct snd_ctl_elem_value *ucontrol)
299{
300 memset(ucontrol->value.iec958.status, 0xff, AK4113_REG_RXCSB_SIZE);
301 return 0;
302}
303
304static int snd_ak4113_spdif_pinfo(struct snd_kcontrol *kcontrol,
305 struct snd_ctl_elem_info *uinfo)
306{
307 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
308 uinfo->value.integer.min = 0;
309 uinfo->value.integer.max = 0xffff;
310 uinfo->count = 4;
311 return 0;
312}
313
314static int snd_ak4113_spdif_pget(struct snd_kcontrol *kcontrol,
315 struct snd_ctl_elem_value *ucontrol)
316{
317 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
318 unsigned short tmp;
319
320 ucontrol->value.integer.value[0] = 0xf8f2;
321 ucontrol->value.integer.value[1] = 0x4e1f;
322 tmp = reg_read(chip, AK4113_REG_Pc0) |
323 (reg_read(chip, AK4113_REG_Pc1) << 8);
324 ucontrol->value.integer.value[2] = tmp;
325 tmp = reg_read(chip, AK4113_REG_Pd0) |
326 (reg_read(chip, AK4113_REG_Pd1) << 8);
327 ucontrol->value.integer.value[3] = tmp;
328 return 0;
329}
330
331static int snd_ak4113_spdif_qinfo(struct snd_kcontrol *kcontrol,
332 struct snd_ctl_elem_info *uinfo)
333{
334 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
335 uinfo->count = AK4113_REG_QSUB_SIZE;
336 return 0;
337}
338
339static int snd_ak4113_spdif_qget(struct snd_kcontrol *kcontrol,
340 struct snd_ctl_elem_value *ucontrol)
341{
342 struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
343 unsigned i;
344
345 for (i = 0; i < AK4113_REG_QSUB_SIZE; i++)
346 ucontrol->value.bytes.data[i] = reg_read(chip,
347 AK4113_REG_QSUB_ADDR + i);
348 return 0;
349}
350
351
352static const struct snd_kcontrol_new snd_ak4113_iec958_controls[] = {
353{
354 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
355 .name = "IEC958 Parity Errors",
356 .access = SNDRV_CTL_ELEM_ACCESS_READ |
357 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
358 .info = snd_ak4113_in_error_info,
359 .get = snd_ak4113_in_error_get,
360 .private_value = AK4113_PARITY_ERRORS,
361},
362{
363 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
364 .name = "IEC958 V-Bit Errors",
365 .access = SNDRV_CTL_ELEM_ACCESS_READ |
366 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
367 .info = snd_ak4113_in_error_info,
368 .get = snd_ak4113_in_error_get,
369 .private_value = AK4113_V_BIT_ERRORS,
370},
371{
372 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
373 .name = "IEC958 C-CRC Errors",
374 .access = SNDRV_CTL_ELEM_ACCESS_READ |
375 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
376 .info = snd_ak4113_in_error_info,
377 .get = snd_ak4113_in_error_get,
378 .private_value = AK4113_CCRC_ERRORS,
379},
380{
381 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
382 .name = "IEC958 Q-CRC Errors",
383 .access = SNDRV_CTL_ELEM_ACCESS_READ |
384 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
385 .info = snd_ak4113_in_error_info,
386 .get = snd_ak4113_in_error_get,
387 .private_value = AK4113_QCRC_ERRORS,
388},
389{
390 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
391 .name = "IEC958 External Rate",
392 .access = SNDRV_CTL_ELEM_ACCESS_READ |
393 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
394 .info = snd_ak4113_rate_info,
395 .get = snd_ak4113_rate_get,
396},
397{
398 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
399 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK),
400 .access = SNDRV_CTL_ELEM_ACCESS_READ,
401 .info = snd_ak4113_spdif_mask_info,
402 .get = snd_ak4113_spdif_mask_get,
403},
404{
405 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
406 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
407 .access = SNDRV_CTL_ELEM_ACCESS_READ |
408 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
409 .info = snd_ak4113_spdif_info,
410 .get = snd_ak4113_spdif_get,
411},
412{
413 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
414 .name = "IEC958 Preamble Capture Default",
415 .access = SNDRV_CTL_ELEM_ACCESS_READ |
416 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
417 .info = snd_ak4113_spdif_pinfo,
418 .get = snd_ak4113_spdif_pget,
419},
420{
421 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
422 .name = "IEC958 Q-subcode Capture Default",
423 .access = SNDRV_CTL_ELEM_ACCESS_READ |
424 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
425 .info = snd_ak4113_spdif_qinfo,
426 .get = snd_ak4113_spdif_qget,
427},
428{
429 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
430 .name = "IEC958 Audio",
431 .access = SNDRV_CTL_ELEM_ACCESS_READ |
432 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
433 .info = snd_ak4113_in_bit_info,
434 .get = snd_ak4113_in_bit_get,
435 .private_value = (1<<31) | (1<<8) | AK4113_REG_RCS0,
436},
437{
438 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
439 .name = "IEC958 Non-PCM Bitstream",
440 .access = SNDRV_CTL_ELEM_ACCESS_READ |
441 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
442 .info = snd_ak4113_in_bit_info,
443 .get = snd_ak4113_in_bit_get,
444 .private_value = (0<<8) | AK4113_REG_RCS1,
445},
446{
447 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
448 .name = "IEC958 DTS Bitstream",
449 .access = SNDRV_CTL_ELEM_ACCESS_READ |
450 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
451 .info = snd_ak4113_in_bit_info,
452 .get = snd_ak4113_in_bit_get,
453 .private_value = (1<<8) | AK4113_REG_RCS1,
454},
455{
456 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
457 .name = "AK4113 Input Select",
458 .access = SNDRV_CTL_ELEM_ACCESS_READ |
459 SNDRV_CTL_ELEM_ACCESS_WRITE,
460 .info = snd_ak4113_rx_info,
461 .get = snd_ak4113_rx_get,
462 .put = snd_ak4113_rx_put,
463}
464};
465
466static void snd_ak4113_proc_regs_read(struct snd_info_entry *entry,
467 struct snd_info_buffer *buffer)
468{
469 struct ak4113 *ak4113 = entry->private_data;
470 int reg, val;
471
472 for (reg = 0; reg < 0x1d; reg++) {
473 val = reg_read(ak4113, reg);
474 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
475 }
476}
477
478static void snd_ak4113_proc_init(struct ak4113 *ak4113)
479{
480 snd_card_ro_proc_new(ak4113->card, "ak4113", ak4113,
481 snd_ak4113_proc_regs_read);
482}
483
484int snd_ak4113_build(struct ak4113 *ak4113,
485 struct snd_pcm_substream *cap_substream)
486{
487 struct snd_kcontrol *kctl;
488 unsigned int idx;
489 int err;
490
491 if (snd_BUG_ON(!cap_substream))
492 return -EINVAL;
493 ak4113->substream = cap_substream;
494 for (idx = 0; idx < AK4113_CONTROLS; idx++) {
495 kctl = snd_ctl_new1(&snd_ak4113_iec958_controls[idx], ak4113);
496 if (kctl == NULL)
497 return -ENOMEM;
498 kctl->id.device = cap_substream->pcm->device;
499 kctl->id.subdevice = cap_substream->number;
500 err = snd_ctl_add(ak4113->card, kctl);
501 if (err < 0)
502 return err;
503 ak4113->kctls[idx] = kctl;
504 }
505 snd_ak4113_proc_init(ak4113);
506
507 schedule_delayed_work(&ak4113->work, HZ / 10);
508 return 0;
509}
510EXPORT_SYMBOL_GPL(snd_ak4113_build);
511
512int snd_ak4113_external_rate(struct ak4113 *ak4113)
513{
514 unsigned char rcs1;
515
516 rcs1 = reg_read(ak4113, AK4113_REG_RCS1);
517 return external_rate(rcs1);
518}
519EXPORT_SYMBOL_GPL(snd_ak4113_external_rate);
520
521int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags)
522{
523 struct snd_pcm_runtime *runtime =
524 ak4113->substream ? ak4113->substream->runtime : NULL;
525 unsigned long _flags;
526 int res = 0;
527 unsigned char rcs0, rcs1, rcs2;
528 unsigned char c0, c1;
529
530 rcs1 = reg_read(ak4113, AK4113_REG_RCS1);
531 if (flags & AK4113_CHECK_NO_STAT)
532 goto __rate;
533 rcs0 = reg_read(ak4113, AK4113_REG_RCS0);
534 rcs2 = reg_read(ak4113, AK4113_REG_RCS2);
535 spin_lock_irqsave(&ak4113->lock, _flags);
536 if (rcs0 & AK4113_PAR)
537 ak4113->errors[AK4113_PARITY_ERRORS]++;
538 if (rcs0 & AK4113_V)
539 ak4113->errors[AK4113_V_BIT_ERRORS]++;
540 if (rcs2 & AK4113_CCRC)
541 ak4113->errors[AK4113_CCRC_ERRORS]++;
542 if (rcs2 & AK4113_QCRC)
543 ak4113->errors[AK4113_QCRC_ERRORS]++;
544 c0 = (ak4113->rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC |
545 AK4113_AUDION | AK4113_AUTO | AK4113_UNLCK)) ^
546 (rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC |
547 AK4113_AUDION | AK4113_AUTO | AK4113_UNLCK));
548 c1 = (ak4113->rcs1 & (AK4113_DTSCD | AK4113_NPCM | AK4113_PEM |
549 AK4113_DAT | 0xf0)) ^
550 (rcs1 & (AK4113_DTSCD | AK4113_NPCM | AK4113_PEM |
551 AK4113_DAT | 0xf0));
552 ak4113->rcs0 = rcs0 & ~(AK4113_QINT | AK4113_CINT | AK4113_STC);
553 ak4113->rcs1 = rcs1;
554 ak4113->rcs2 = rcs2;
555 spin_unlock_irqrestore(&ak4113->lock, _flags);
556
557 if (rcs0 & AK4113_PAR)
558 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
559 &ak4113->kctls[0]->id);
560 if (rcs0 & AK4113_V)
561 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
562 &ak4113->kctls[1]->id);
563 if (rcs2 & AK4113_CCRC)
564 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
565 &ak4113->kctls[2]->id);
566 if (rcs2 & AK4113_QCRC)
567 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
568 &ak4113->kctls[3]->id);
569
570
571 if (c1 & 0xf0)
572 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
573 &ak4113->kctls[4]->id);
574
575 if ((c1 & AK4113_PEM) | (c0 & AK4113_CINT))
576 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
577 &ak4113->kctls[6]->id);
578 if (c0 & AK4113_QINT)
579 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
580 &ak4113->kctls[8]->id);
581
582 if (c0 & AK4113_AUDION)
583 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
584 &ak4113->kctls[9]->id);
585 if (c1 & AK4113_NPCM)
586 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
587 &ak4113->kctls[10]->id);
588 if (c1 & AK4113_DTSCD)
589 snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE,
590 &ak4113->kctls[11]->id);
591
592 if (ak4113->change_callback && (c0 | c1) != 0)
593 ak4113->change_callback(ak4113, c0, c1);
594
595__rate:
596
597 res = external_rate(rcs1);
598 if (!(flags & AK4113_CHECK_NO_RATE) && runtime &&
599 (runtime->rate != res)) {
600 snd_pcm_stream_lock_irqsave(ak4113->substream, _flags);
601 if (snd_pcm_running(ak4113->substream)) {
602
603
604 snd_pcm_stop(ak4113->substream,
605 SNDRV_PCM_STATE_DRAINING);
606 wake_up(&runtime->sleep);
607 res = 1;
608 }
609 snd_pcm_stream_unlock_irqrestore(ak4113->substream, _flags);
610 }
611 return res;
612}
613EXPORT_SYMBOL_GPL(snd_ak4113_check_rate_and_errors);
614
615static void ak4113_stats(struct work_struct *work)
616{
617 struct ak4113 *chip = container_of(work, struct ak4113, work.work);
618
619 if (atomic_inc_return(&chip->wq_processing) == 1)
620 snd_ak4113_check_rate_and_errors(chip, chip->check_flags);
621
622 if (atomic_dec_and_test(&chip->wq_processing))
623 schedule_delayed_work(&chip->work, HZ / 10);
624}
625
626#ifdef CONFIG_PM
627void snd_ak4113_suspend(struct ak4113 *chip)
628{
629 atomic_inc(&chip->wq_processing);
630 cancel_delayed_work_sync(&chip->work);
631}
632EXPORT_SYMBOL(snd_ak4113_suspend);
633
634void snd_ak4113_resume(struct ak4113 *chip)
635{
636 atomic_dec(&chip->wq_processing);
637 snd_ak4113_reinit(chip);
638}
639EXPORT_SYMBOL(snd_ak4113_resume);
640#endif
641
