ASoC: dapm: Fix _PRE and _POST events for DAPM performance improvements
[alsa-kmirror.git] / 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@perex.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 <linux/slab.h>
24 #include <linux/delay.h>
25 #include <linux/module.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 #include <sound/info.h>
32
33 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
34 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
35 MODULE_LICENSE("GPL");
36
37 #define AK4114_ADDR                     0x00 /* fixed address */
38
39 static void ak4114_stats(struct work_struct *work);
40 static void ak4114_init_regs(struct ak4114 *chip);
41
42 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
43 {
44         ak4114->write(ak4114->private_data, reg, val);
45         if (reg <= AK4114_REG_INT1_MASK)
46                 ak4114->regmap[reg] = val;
47         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
48                 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
49 }
50
51 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
52 {
53         return ak4114->read(ak4114->private_data, reg);
54 }
55
56 #if 0
57 static void reg_dump(struct ak4114 *ak4114)
58 {
59         int i;
60
61         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
62         for (i = 0; i < 0x20; i++)
63                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
64 }
65 #endif
66
67 static void snd_ak4114_free(struct ak4114 *chip)
68 {
69         chip->init = 1; /* don't schedule new work */
70         mb();
71         cancel_delayed_work_sync(&chip->work);
72         kfree(chip);
73 }
74
75 static int snd_ak4114_dev_free(struct snd_device *device)
76 {
77         struct ak4114 *chip = device->device_data;
78         snd_ak4114_free(chip);
79         return 0;
80 }
81
82 int snd_ak4114_create(struct snd_card *card,
83                       ak4114_read_t *read, ak4114_write_t *write,
84                       const unsigned char pgm[7], const unsigned char txcsb[5],
85                       void *private_data, struct ak4114 **r_ak4114)
86 {
87         struct ak4114 *chip;
88         int err = 0;
89         unsigned char reg;
90         static struct snd_device_ops ops = {
91                 .dev_free =     snd_ak4114_dev_free,
92         };
93
94         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
95         if (chip == NULL)
96                 return -ENOMEM;
97         spin_lock_init(&chip->lock);
98         chip->card = card;
99         chip->read = read;
100         chip->write = write;
101         chip->private_data = private_data;
102         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
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         ak4114_init_regs(chip);
110
111         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
112         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
113
114         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
115                 goto __fail;
116
117         if (r_ak4114)
118                 *r_ak4114 = chip;
119         return 0;
120
121       __fail:
122         snd_ak4114_free(chip);
123         return err < 0 ? err : -EIO;
124 }
125
126 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
127 {
128         if (reg <= AK4114_REG_INT1_MASK)
129                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
130         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
131                 reg_write(chip, reg,
132                           (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
133 }
134
135 static void ak4114_init_regs(struct ak4114 *chip)
136 {
137         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
138
139         /* bring the chip to reset state and powerdown state */
140         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
141         udelay(200);
142         /* release reset, but leave powerdown */
143         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
144         udelay(200);
145         for (reg = 1; reg < 7; reg++)
146                 reg_write(chip, reg, chip->regmap[reg]);
147         for (reg = 0; reg < 5; reg++)
148                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
149         /* release powerdown, everything is initialized now */
150         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
151 }
152
153 void snd_ak4114_reinit(struct ak4114 *chip)
154 {
155         chip->init = 1;
156         mb();
157         flush_delayed_work_sync(&chip->work);
158         ak4114_init_regs(chip);
159         /* bring up statistics / event queing */
160         chip->init = 0;
161         if (chip->kctls[0])
162                 schedule_delayed_work(&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 #define snd_ak4114_in_bit_info          snd_ctl_boolean_mono_info
204
205 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
206                                  struct snd_ctl_elem_value *ucontrol)
207 {
208         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
209         unsigned char reg = kcontrol->private_value & 0xff;
210         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
211         unsigned char inv = (kcontrol->private_value >> 31) & 1;
212
213         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
214         return 0;
215 }
216
217 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
218                                 struct snd_ctl_elem_info *uinfo)
219 {
220         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
221         uinfo->count = 1;
222         uinfo->value.integer.min = 0;
223         uinfo->value.integer.max = 192000;
224         return 0;
225 }
226
227 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
228                                struct snd_ctl_elem_value *ucontrol)
229 {
230         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
231
232         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
233         return 0;
234 }
235
236 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
237 {
238         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
239         uinfo->count = 1;
240         return 0;
241 }
242
243 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
244                                 struct snd_ctl_elem_value *ucontrol)
245 {
246         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
247         unsigned i;
248
249         for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
250                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
251         return 0;
252 }
253
254 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
255                                          struct snd_ctl_elem_value *ucontrol)
256 {
257         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
258         unsigned i;
259
260         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
261                 ucontrol->value.iec958.status[i] = chip->txcsb[i];
262         return 0;
263 }
264
265 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
266                                          struct snd_ctl_elem_value *ucontrol)
267 {
268         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
269         unsigned i;
270
271         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
272                 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
273         return 0;
274 }
275
276 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
277 {
278         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
279         uinfo->count = 1;
280         return 0;
281 }
282
283 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
284                                       struct snd_ctl_elem_value *ucontrol)
285 {
286         memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
287         return 0;
288 }
289
290 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
291 {
292         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
293         uinfo->value.integer.min = 0;
294         uinfo->value.integer.max = 0xffff;
295         uinfo->count = 4;
296         return 0;
297 }
298
299 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
300                                  struct snd_ctl_elem_value *ucontrol)
301 {
302         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
303         unsigned short tmp;
304
305         ucontrol->value.integer.value[0] = 0xf8f2;
306         ucontrol->value.integer.value[1] = 0x4e1f;
307         tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
308         ucontrol->value.integer.value[2] = tmp;
309         tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
310         ucontrol->value.integer.value[3] = tmp;
311         return 0;
312 }
313
314 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
315 {
316         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
317         uinfo->count = AK4114_REG_QSUB_SIZE;
318         return 0;
319 }
320
321 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
322                                  struct snd_ctl_elem_value *ucontrol)
323 {
324         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
325         unsigned i;
326
327         for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
328                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
329         return 0;
330 }
331
332 /* Don't forget to change AK4114_CONTROLS define!!! */
333 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
334 {
335         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
336         .name =         "IEC958 Parity Errors",
337         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
338         .info =         snd_ak4114_in_error_info,
339         .get =          snd_ak4114_in_error_get,
340         .private_value = offsetof(struct ak4114, parity_errors),
341 },
342 {
343         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
344         .name =         "IEC958 V-Bit 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, v_bit_errors),
349 },
350 {
351         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
352         .name =         "IEC958 C-CRC 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, ccrc_errors),
357 },
358 {
359         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
360         .name =         "IEC958 Q-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, qcrc_errors),
365 },
366 {
367         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
368         .name =         "IEC958 External Rate",
369         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
370         .info =         snd_ak4114_rate_info,
371         .get =          snd_ak4114_rate_get,
372 },
373 {
374         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
375         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
376         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
377         .info =         snd_ak4114_spdif_mask_info,
378         .get =          snd_ak4114_spdif_mask_get,
379 },
380 {
381         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
382         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
383         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
384         .info =         snd_ak4114_spdif_info,
385         .get =          snd_ak4114_spdif_playback_get,
386         .put =          snd_ak4114_spdif_playback_put,
387 },
388 {
389         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
390         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
391         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
392         .info =         snd_ak4114_spdif_mask_info,
393         .get =          snd_ak4114_spdif_mask_get,
394 },
395 {
396         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
397         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
398         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
399         .info =         snd_ak4114_spdif_info,
400         .get =          snd_ak4114_spdif_get,
401 },
402 {
403         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
404         .name =         "IEC958 Preample Capture Default",
405         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
406         .info =         snd_ak4114_spdif_pinfo,
407         .get =          snd_ak4114_spdif_pget,
408 },
409 {
410         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
411         .name =         "IEC958 Q-subcode Capture Default",
412         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
413         .info =         snd_ak4114_spdif_qinfo,
414         .get =          snd_ak4114_spdif_qget,
415 },
416 {
417         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
418         .name =         "IEC958 Audio",
419         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
420         .info =         snd_ak4114_in_bit_info,
421         .get =          snd_ak4114_in_bit_get,
422         .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
423 },
424 {
425         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
426         .name =         "IEC958 Non-PCM Bitstream",
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 = (6<<8) | AK4114_REG_RCS0,
431 },
432 {
433         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
434         .name =         "IEC958 DTS 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 = (3<<8) | AK4114_REG_RCS0,
439 },
440 {
441         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
442         .name =         "IEC958 PPL Lock Status",
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 = (1<<31) | (4<<8) | AK4114_REG_RCS0,
447 }
448 };
449
450
451 static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
452                 struct snd_info_buffer *buffer)
453 {
454         struct ak4114 *ak4114 = entry->private_data;
455         int reg, val;
456         /* all ak4114 registers 0x00 - 0x1f */
457         for (reg = 0; reg < 0x20; reg++) {
458                 val = reg_read(ak4114, reg);
459                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
460         }
461 }
462
463 static void snd_ak4114_proc_init(struct ak4114 *ak4114)
464 {
465         struct snd_info_entry *entry;
466         if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
467                 snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
468 }
469
470 int snd_ak4114_build(struct ak4114 *ak4114,
471                      struct snd_pcm_substream *ply_substream,
472                      struct snd_pcm_substream *cap_substream)
473 {
474         struct snd_kcontrol *kctl;
475         unsigned int idx;
476         int err;
477
478         if (snd_BUG_ON(!cap_substream))
479                 return -EINVAL;
480         ak4114->playback_substream = ply_substream;
481         ak4114->capture_substream = cap_substream;
482         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
483                 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
484                 if (kctl == NULL)
485                         return -ENOMEM;
486                 if (strstr(kctl->id.name, "Playback")) {
487                         if (ply_substream == NULL) {
488                                 snd_ctl_free_one(kctl);
489                                 ak4114->kctls[idx] = NULL;
490                                 continue;
491                         }
492                         kctl->id.device = ply_substream->pcm->device;
493                         kctl->id.subdevice = ply_substream->number;
494                 } else {
495                         kctl->id.device = cap_substream->pcm->device;
496                         kctl->id.subdevice = cap_substream->number;
497                 }
498                 err = snd_ctl_add(ak4114->card, kctl);
499                 if (err < 0)
500                         return err;
501                 ak4114->kctls[idx] = kctl;
502         }
503         snd_ak4114_proc_init(ak4114);
504         /* trigger workq */
505         schedule_delayed_work(&ak4114->work, HZ / 10);
506         return 0;
507 }
508
509 /* notify kcontrols if any parameters are changed */
510 static void ak4114_notify(struct ak4114 *ak4114,
511                           unsigned char rcs0, unsigned char rcs1,
512                           unsigned char c0, unsigned char c1)
513 {
514         if (!ak4114->kctls[0])
515                 return;
516
517         if (rcs0 & AK4114_PAR)
518                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
519                                &ak4114->kctls[0]->id);
520         if (rcs0 & AK4114_V)
521                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
522                                &ak4114->kctls[1]->id);
523         if (rcs1 & AK4114_CCRC)
524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
525                                &ak4114->kctls[2]->id);
526         if (rcs1 & AK4114_QCRC)
527                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
528                                &ak4114->kctls[3]->id);
529
530         /* rate change */
531         if (c1 & 0xf0)
532                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
533                                &ak4114->kctls[4]->id);
534
535         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
536                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
537                                &ak4114->kctls[9]->id);
538         if (c0 & AK4114_QINT)
539                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
540                                &ak4114->kctls[10]->id);
541
542         if (c0 & AK4114_AUDION)
543                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
544                                &ak4114->kctls[11]->id);
545         if (c0 & AK4114_AUTO)
546                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
547                                &ak4114->kctls[12]->id);
548         if (c0 & AK4114_DTSCD)
549                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
550                                &ak4114->kctls[13]->id);
551         if (c0 & AK4114_UNLCK)
552                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
553                                &ak4114->kctls[14]->id);
554 }
555
556 int snd_ak4114_external_rate(struct ak4114 *ak4114)
557 {
558         unsigned char rcs1;
559
560         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
561         return external_rate(rcs1);
562 }
563
564 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
565 {
566         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
567         unsigned long _flags;
568         int res = 0;
569         unsigned char rcs0, rcs1;
570         unsigned char c0, c1;
571
572         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
573         if (flags & AK4114_CHECK_NO_STAT)
574                 goto __rate;
575         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
576         spin_lock_irqsave(&ak4114->lock, _flags);
577         if (rcs0 & AK4114_PAR)
578                 ak4114->parity_errors++;
579         if (rcs1 & AK4114_V)
580                 ak4114->v_bit_errors++;
581         if (rcs1 & AK4114_CCRC)
582                 ak4114->ccrc_errors++;
583         if (rcs1 & AK4114_QCRC)
584                 ak4114->qcrc_errors++;
585         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
586                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
587         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
588         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
589         ak4114->rcs1 = rcs1;
590         spin_unlock_irqrestore(&ak4114->lock, _flags);
591
592         ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
593         if (ak4114->change_callback && (c0 | c1) != 0)
594                 ak4114->change_callback(ak4114, c0, c1);
595
596       __rate:
597         /* compare rate */
598         res = external_rate(rcs1);
599         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
600                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
601                 if (snd_pcm_running(ak4114->capture_substream)) {
602                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
603                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
604                         res = 1;
605                 }
606                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
607         }
608         return res;
609 }
610
611 static void ak4114_stats(struct work_struct *work)
612 {
613         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
614
615         if (!chip->init)
616                 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
617
618         schedule_delayed_work(&chip->work, HZ / 10);
619 }
620
621 EXPORT_SYMBOL(snd_ak4114_create);
622 EXPORT_SYMBOL(snd_ak4114_reg_write);
623 EXPORT_SYMBOL(snd_ak4114_reinit);
624 EXPORT_SYMBOL(snd_ak4114_build);
625 EXPORT_SYMBOL(snd_ak4114_external_rate);
626 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);