WorkStruct: make allyesconfig
[linux-3.10.git] / sound / i2c / other / ak4114.c
1 /*
2  *  Routines for control of the AK4114 via I2C and 4-wire serial interface
3  *  IEC958 (S/PDIF) receiver by Asahi Kasei
4  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
5  *
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22
23 #include <sound/driver.h>
24 #include <linux/slab.h>
25 #include <linux/delay.h>
26 #include <sound/core.h>
27 #include <sound/control.h>
28 #include <sound/pcm.h>
29 #include <sound/ak4114.h>
30 #include <sound/asoundef.h>
31
32 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
33 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
34 MODULE_LICENSE("GPL");
35
36 #define AK4114_ADDR                     0x00 /* fixed address */
37
38 static void ak4114_stats(struct work_struct *work);
39
40 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
41 {
42         ak4114->write(ak4114->private_data, reg, val);
43         if (reg <= AK4114_REG_INT1_MASK)
44                 ak4114->regmap[reg] = val;
45         else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4)
46                 ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val;
47 }
48
49 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
50 {
51         return ak4114->read(ak4114->private_data, reg);
52 }
53
54 #if 0
55 static void reg_dump(struct ak4114 *ak4114)
56 {
57         int i;
58
59         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
60         for (i = 0; i < 0x20; i++)
61                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
62 }
63 #endif
64
65 static void snd_ak4114_free(struct ak4114 *chip)
66 {
67         chip->init = 1; /* don't schedule new work */
68         mb();
69         if (chip->workqueue != NULL) {
70                 flush_workqueue(chip->workqueue);
71                 destroy_workqueue(chip->workqueue);
72         }
73         kfree(chip);
74 }
75
76 static int snd_ak4114_dev_free(struct snd_device *device)
77 {
78         struct ak4114 *chip = device->device_data;
79         snd_ak4114_free(chip);
80         return 0;
81 }
82
83 int snd_ak4114_create(struct snd_card *card,
84                       ak4114_read_t *read, ak4114_write_t *write,
85                       unsigned char pgm[7], unsigned char txcsb[5],
86                       void *private_data, struct ak4114 **r_ak4114)
87 {
88         struct ak4114 *chip;
89         int err = 0;
90         unsigned char reg;
91         static struct snd_device_ops ops = {
92                 .dev_free =     snd_ak4114_dev_free,
93         };
94
95         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
96         if (chip == NULL)
97                 return -ENOMEM;
98         spin_lock_init(&chip->lock);
99         chip->card = card;
100         chip->read = read;
101         chip->write = write;
102         chip->private_data = private_data;
103
104         for (reg = 0; reg < 7; reg++)
105                 chip->regmap[reg] = pgm[reg];
106         for (reg = 0; reg < 5; reg++)
107                 chip->txcsb[reg] = txcsb[reg];
108
109         chip->workqueue = create_workqueue("snd-ak4114");
110         if (chip->workqueue == NULL) {
111                 kfree(chip);
112                 return -ENOMEM;
113         }
114
115         snd_ak4114_reinit(chip);
116
117         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
118         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
119
120         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
121                 goto __fail;
122
123         if (r_ak4114)
124                 *r_ak4114 = chip;
125         return 0;
126
127       __fail:
128         snd_ak4114_free(chip);
129         return err < 0 ? err : -EIO;
130 }
131
132 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
133 {
134         if (reg <= AK4114_REG_INT1_MASK)
135                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
136         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
137                 reg_write(chip, reg, (chip->txcsb[reg] & ~mask) | val);
138 }
139
140 void snd_ak4114_reinit(struct ak4114 *chip)
141 {
142         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
143
144         chip->init = 1;
145         mb();
146         flush_workqueue(chip->workqueue);
147         /* bring the chip to reset state and powerdown state */
148         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
149         udelay(200);
150         /* release reset, but leave powerdown */
151         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
152         udelay(200);
153         for (reg = 1; reg < 7; reg++)
154                 reg_write(chip, reg, chip->regmap[reg]);
155         for (reg = 0; reg < 5; reg++)
156                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
157         /* release powerdown, everything is initialized now */
158         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
159         /* bring up statistics / event queing */
160         chip->init = 0;
161         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
162         queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
163 }
164
165 static unsigned int external_rate(unsigned char rcs1)
166 {
167         switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
168         case AK4114_FS_32000HZ: return 32000;
169         case AK4114_FS_44100HZ: return 44100;
170         case AK4114_FS_48000HZ: return 48000;
171         case AK4114_FS_88200HZ: return 88200;
172         case AK4114_FS_96000HZ: return 96000;
173         case AK4114_FS_176400HZ: return 176400;
174         case AK4114_FS_192000HZ: return 192000;
175         default:                return 0;
176         }
177 }
178
179 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
180                                     struct snd_ctl_elem_info *uinfo)
181 {
182         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
183         uinfo->count = 1;
184         uinfo->value.integer.min = 0;
185         uinfo->value.integer.max = LONG_MAX;
186         return 0;
187 }
188
189 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
190                                    struct snd_ctl_elem_value *ucontrol)
191 {
192         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
193         long *ptr;
194
195         spin_lock_irq(&chip->lock);
196         ptr = (long *)(((char *)chip) + kcontrol->private_value);
197         ucontrol->value.integer.value[0] = *ptr;
198         *ptr = 0;
199         spin_unlock_irq(&chip->lock);
200         return 0;
201 }
202
203 static int snd_ak4114_in_bit_info(struct snd_kcontrol *kcontrol,
204                                   struct snd_ctl_elem_info *uinfo)
205 {
206         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
207         uinfo->count = 1;
208         uinfo->value.integer.min = 0;
209         uinfo->value.integer.max = 1;
210         return 0;
211 }
212
213 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
214                                  struct snd_ctl_elem_value *ucontrol)
215 {
216         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
217         unsigned char reg = kcontrol->private_value & 0xff;
218         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
219         unsigned char inv = (kcontrol->private_value >> 31) & 1;
220
221         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
222         return 0;
223 }
224
225 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
226                                 struct snd_ctl_elem_info *uinfo)
227 {
228         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
229         uinfo->count = 1;
230         uinfo->value.integer.min = 0;
231         uinfo->value.integer.max = 192000;
232         return 0;
233 }
234
235 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
236                                struct snd_ctl_elem_value *ucontrol)
237 {
238         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
239
240         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
241         return 0;
242 }
243
244 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
245 {
246         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
247         uinfo->count = 1;
248         return 0;
249 }
250
251 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
252                                 struct snd_ctl_elem_value *ucontrol)
253 {
254         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
255         unsigned i;
256
257         for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
258                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
259         return 0;
260 }
261
262 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
263                                          struct snd_ctl_elem_value *ucontrol)
264 {
265         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
266         unsigned i;
267
268         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
269                 ucontrol->value.iec958.status[i] = chip->txcsb[i];
270         return 0;
271 }
272
273 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
274                                          struct snd_ctl_elem_value *ucontrol)
275 {
276         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
277         unsigned i;
278
279         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
280                 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
281         return 0;
282 }
283
284 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
285 {
286         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
287         uinfo->count = 1;
288         return 0;
289 }
290
291 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
292                                       struct snd_ctl_elem_value *ucontrol)
293 {
294         memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
295         return 0;
296 }
297
298 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
299 {
300         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
301         uinfo->value.integer.min = 0;
302         uinfo->value.integer.max = 0xffff;
303         uinfo->count = 4;
304         return 0;
305 }
306
307 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
308                                  struct snd_ctl_elem_value *ucontrol)
309 {
310         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
311         unsigned short tmp;
312
313         ucontrol->value.integer.value[0] = 0xf8f2;
314         ucontrol->value.integer.value[1] = 0x4e1f;
315         tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
316         ucontrol->value.integer.value[2] = tmp;
317         tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
318         ucontrol->value.integer.value[3] = tmp;
319         return 0;
320 }
321
322 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
323 {
324         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
325         uinfo->count = AK4114_REG_QSUB_SIZE;
326         return 0;
327 }
328
329 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
330                                  struct snd_ctl_elem_value *ucontrol)
331 {
332         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
333         unsigned i;
334
335         for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
336                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
337         return 0;
338 }
339
340 /* Don't forget to change AK4114_CONTROLS define!!! */
341 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
342 {
343         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
344         .name =         "IEC958 Parity Errors",
345         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
346         .info =         snd_ak4114_in_error_info,
347         .get =          snd_ak4114_in_error_get,
348         .private_value = offsetof(struct ak4114, parity_errors),
349 },
350 {
351         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
352         .name =         "IEC958 V-Bit Errors",
353         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
354         .info =         snd_ak4114_in_error_info,
355         .get =          snd_ak4114_in_error_get,
356         .private_value = offsetof(struct ak4114, v_bit_errors),
357 },
358 {
359         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
360         .name =         "IEC958 C-CRC Errors",
361         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
362         .info =         snd_ak4114_in_error_info,
363         .get =          snd_ak4114_in_error_get,
364         .private_value = offsetof(struct ak4114, ccrc_errors),
365 },
366 {
367         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
368         .name =         "IEC958 Q-CRC Errors",
369         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
370         .info =         snd_ak4114_in_error_info,
371         .get =          snd_ak4114_in_error_get,
372         .private_value = offsetof(struct ak4114, qcrc_errors),
373 },
374 {
375         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
376         .name =         "IEC958 External Rate",
377         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
378         .info =         snd_ak4114_rate_info,
379         .get =          snd_ak4114_rate_get,
380 },
381 {
382         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
383         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
384         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
385         .info =         snd_ak4114_spdif_mask_info,
386         .get =          snd_ak4114_spdif_mask_get,
387 },
388 {
389         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
390         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
391         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
392         .info =         snd_ak4114_spdif_info,
393         .get =          snd_ak4114_spdif_playback_get,
394         .put =          snd_ak4114_spdif_playback_put,
395 },
396 {
397         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
398         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
399         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
400         .info =         snd_ak4114_spdif_mask_info,
401         .get =          snd_ak4114_spdif_mask_get,
402 },
403 {
404         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
405         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
406         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
407         .info =         snd_ak4114_spdif_info,
408         .get =          snd_ak4114_spdif_get,
409 },
410 {
411         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
412         .name =         "IEC958 Preample Capture Default",
413         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
414         .info =         snd_ak4114_spdif_pinfo,
415         .get =          snd_ak4114_spdif_pget,
416 },
417 {
418         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
419         .name =         "IEC958 Q-subcode Capture Default",
420         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
421         .info =         snd_ak4114_spdif_qinfo,
422         .get =          snd_ak4114_spdif_qget,
423 },
424 {
425         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
426         .name =         "IEC958 Audio",
427         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
428         .info =         snd_ak4114_in_bit_info,
429         .get =          snd_ak4114_in_bit_get,
430         .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
431 },
432 {
433         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
434         .name =         "IEC958 Non-PCM Bitstream",
435         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
436         .info =         snd_ak4114_in_bit_info,
437         .get =          snd_ak4114_in_bit_get,
438         .private_value = (6<<8) | AK4114_REG_RCS1,
439 },
440 {
441         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
442         .name =         "IEC958 DTS Bitstream",
443         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
444         .info =         snd_ak4114_in_bit_info,
445         .get =          snd_ak4114_in_bit_get,
446         .private_value = (3<<8) | AK4114_REG_RCS1,
447 }
448 };
449
450 int snd_ak4114_build(struct ak4114 *ak4114,
451                      struct snd_pcm_substream *ply_substream,
452                      struct snd_pcm_substream *cap_substream)
453 {
454         struct snd_kcontrol *kctl;
455         unsigned int idx;
456         int err;
457
458         snd_assert(cap_substream, return -EINVAL);
459         ak4114->playback_substream = ply_substream;
460         ak4114->capture_substream = cap_substream;
461         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
462                 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
463                 if (kctl == NULL)
464                         return -ENOMEM;
465                 if (!strstr(kctl->id.name, "Playback")) {
466                         if (ply_substream == NULL) {
467                                 snd_ctl_free_one(kctl);
468                                 ak4114->kctls[idx] = NULL;
469                                 continue;
470                         }
471                         kctl->id.device = ply_substream->pcm->device;
472                         kctl->id.subdevice = ply_substream->number;
473                 } else {
474                         kctl->id.device = cap_substream->pcm->device;
475                         kctl->id.subdevice = cap_substream->number;
476                 }
477                 err = snd_ctl_add(ak4114->card, kctl);
478                 if (err < 0)
479                         return err;
480                 ak4114->kctls[idx] = kctl;
481         }
482         return 0;
483 }
484
485 int snd_ak4114_external_rate(struct ak4114 *ak4114)
486 {
487         unsigned char rcs1;
488
489         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
490         return external_rate(rcs1);
491 }
492
493 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
494 {
495         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
496         unsigned long _flags;
497         int res = 0;
498         unsigned char rcs0, rcs1;
499         unsigned char c0, c1;
500
501         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
502         if (flags & AK4114_CHECK_NO_STAT)
503                 goto __rate;
504         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
505         spin_lock_irqsave(&ak4114->lock, _flags);
506         if (rcs0 & AK4114_PAR)
507                 ak4114->parity_errors++;
508         if (rcs1 & AK4114_V)
509                 ak4114->v_bit_errors++;
510         if (rcs1 & AK4114_CCRC)
511                 ak4114->ccrc_errors++;
512         if (rcs1 & AK4114_QCRC)
513                 ak4114->qcrc_errors++;
514         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
515                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
516         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
517         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
518         ak4114->rcs1 = rcs1;
519         spin_unlock_irqrestore(&ak4114->lock, _flags);
520
521         if (rcs0 & AK4114_PAR)
522                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[0]->id);
523         if (rcs0 & AK4114_V)
524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[1]->id);
525         if (rcs1 & AK4114_CCRC)
526                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[2]->id);
527         if (rcs1 & AK4114_QCRC)
528                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[3]->id);
529
530         /* rate change */
531         if (c1 & 0xf0)
532                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[4]->id);
533
534         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
535                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[9]->id);
536         if (c0 & AK4114_QINT)
537                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[10]->id);
538
539         if (c0 & AK4114_AUDION)
540                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[11]->id);
541         if (c0 & AK4114_AUTO)
542                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[12]->id);
543         if (c0 & AK4114_DTSCD)
544                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[13]->id);
545
546         if (ak4114->change_callback && (c0 | c1) != 0)
547                 ak4114->change_callback(ak4114, c0, c1);
548
549       __rate:
550         /* compare rate */
551         res = external_rate(rcs1);
552         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
553                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
554                 if (snd_pcm_running(ak4114->capture_substream)) {
555                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
556                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
557                         res = 1;
558                 }
559                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
560         }
561         return res;
562 }
563
564 static void ak4114_stats(struct work_struct *work)
565 {
566         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
567
568         if (chip->init)
569                 return;
570         snd_ak4114_check_rate_and_errors(chip, 0);
571         queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
572 }
573
574 EXPORT_SYMBOL(snd_ak4114_create);
575 EXPORT_SYMBOL(snd_ak4114_reg_write);
576 EXPORT_SYMBOL(snd_ak4114_reinit);
577 EXPORT_SYMBOL(snd_ak4114_build);
578 EXPORT_SYMBOL(snd_ak4114_external_rate);
579 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);