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TOMOYO Linux Cross Reference
Linux/sound/i2c/other/ak4117.c

Version: ~ [ linux-5.7-rc7 ] ~ [ linux-5.6.14 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.42 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.124 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.181 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.224 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.224 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.84 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *  Routines for control of the AK4117 via 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/ak4117.h>
 30 #include <sound/asoundef.h>
 31 
 32 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 33 MODULE_DESCRIPTION("AK4117 IEC958 (S/PDIF) receiver by Asahi Kasei");
 34 MODULE_LICENSE("GPL");
 35 
 36 #define AK4117_ADDR                     0x00 /* fixed address */
 37 
 38 static void snd_ak4117_timer(unsigned long data);
 39 
 40 static void reg_write(struct ak4117 *ak4117, unsigned char reg, unsigned char val)
 41 {
 42         ak4117->write(ak4117->private_data, reg, val);
 43         if (reg < sizeof(ak4117->regmap))
 44                 ak4117->regmap[reg] = val;
 45 }
 46 
 47 static inline unsigned char reg_read(struct ak4117 *ak4117, unsigned char reg)
 48 {
 49         return ak4117->read(ak4117->private_data, reg);
 50 }
 51 
 52 #if 0
 53 static void reg_dump(struct ak4117 *ak4117)
 54 {
 55         int i;
 56 
 57         printk(KERN_DEBUG "AK4117 REG DUMP:\n");
 58         for (i = 0; i < 0x1b; i++)
 59                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
 60 }
 61 #endif
 62 
 63 static void snd_ak4117_free(struct ak4117 *chip)
 64 {
 65         del_timer_sync(&chip->timer);
 66         kfree(chip);
 67 }
 68 
 69 static int snd_ak4117_dev_free(struct snd_device *device)
 70 {
 71         struct ak4117 *chip = device->device_data;
 72         snd_ak4117_free(chip);
 73         return 0;
 74 }
 75 
 76 int snd_ak4117_create(struct snd_card *card, ak4117_read_t *read, ak4117_write_t *write,
 77                       const unsigned char pgm[5], void *private_data, struct ak4117 **r_ak4117)
 78 {
 79         struct ak4117 *chip;
 80         int err = 0;
 81         unsigned char reg;
 82         static struct snd_device_ops ops = {
 83                 .dev_free =     snd_ak4117_dev_free,
 84         };
 85 
 86         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 87         if (chip == NULL)
 88                 return -ENOMEM;
 89         spin_lock_init(&chip->lock);
 90         chip->card = card;
 91         chip->read = read;
 92         chip->write = write;
 93         chip->private_data = private_data;
 94         setup_timer(&chip->timer, snd_ak4117_timer, (unsigned long)chip);
 95 
 96         for (reg = 0; reg < 5; reg++)
 97                 chip->regmap[reg] = pgm[reg];
 98         snd_ak4117_reinit(chip);
 99 
100         chip->rcs0 = reg_read(chip, AK4117_REG_RCS0) & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
101         chip->rcs1 = reg_read(chip, AK4117_REG_RCS1);
102         chip->rcs2 = reg_read(chip, AK4117_REG_RCS2);
103 
104         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
105                 goto __fail;
106 
107         if (r_ak4117)
108                 *r_ak4117 = chip;
109         return 0;
110 
111       __fail:
112         snd_ak4117_free(chip);
113         return err;
114 }
115 
116 void snd_ak4117_reg_write(struct ak4117 *chip, unsigned char reg, unsigned char mask, unsigned char val)
117 {
118         if (reg >= 5)
119                 return;
120         reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
121 }
122 
123 void snd_ak4117_reinit(struct ak4117 *chip)
124 {
125         unsigned char old = chip->regmap[AK4117_REG_PWRDN], reg;
126 
127         del_timer(&chip->timer);
128         chip->init = 1;
129         /* bring the chip to reset state and powerdown state */
130         reg_write(chip, AK4117_REG_PWRDN, 0);
131         udelay(200);
132         /* release reset, but leave powerdown */
133         reg_write(chip, AK4117_REG_PWRDN, (old | AK4117_RST) & ~AK4117_PWN);
134         udelay(200);
135         for (reg = 1; reg < 5; reg++)
136                 reg_write(chip, reg, chip->regmap[reg]);
137         /* release powerdown, everything is initialized now */
138         reg_write(chip, AK4117_REG_PWRDN, old | AK4117_RST | AK4117_PWN);
139         chip->init = 0;
140         mod_timer(&chip->timer, 1 + jiffies);
141 }
142 
143 static unsigned int external_rate(unsigned char rcs1)
144 {
145         switch (rcs1 & (AK4117_FS0|AK4117_FS1|AK4117_FS2|AK4117_FS3)) {
146         case AK4117_FS_32000HZ: return 32000;
147         case AK4117_FS_44100HZ: return 44100;
148         case AK4117_FS_48000HZ: return 48000;
149         case AK4117_FS_88200HZ: return 88200;
150         case AK4117_FS_96000HZ: return 96000;
151         case AK4117_FS_176400HZ: return 176400;
152         case AK4117_FS_192000HZ: return 192000;
153         default:                return 0;
154         }
155 }
156 
157 static int snd_ak4117_in_error_info(struct snd_kcontrol *kcontrol,
158                                     struct snd_ctl_elem_info *uinfo)
159 {
160         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
161         uinfo->count = 1;
162         uinfo->value.integer.min = 0;
163         uinfo->value.integer.max = LONG_MAX;
164         return 0;
165 }
166 
167 static int snd_ak4117_in_error_get(struct snd_kcontrol *kcontrol,
168                                    struct snd_ctl_elem_value *ucontrol)
169 {
170         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
171         long *ptr;
172 
173         spin_lock_irq(&chip->lock);
174         ptr = (long *)(((char *)chip) + kcontrol->private_value);
175         ucontrol->value.integer.value[0] = *ptr;
176         *ptr = 0;
177         spin_unlock_irq(&chip->lock);
178         return 0;
179 }
180 
181 #define snd_ak4117_in_bit_info          snd_ctl_boolean_mono_info
182 
183 static int snd_ak4117_in_bit_get(struct snd_kcontrol *kcontrol,
184                                  struct snd_ctl_elem_value *ucontrol)
185 {
186         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
187         unsigned char reg = kcontrol->private_value & 0xff;
188         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
189         unsigned char inv = (kcontrol->private_value >> 31) & 1;
190 
191         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
192         return 0;
193 }
194 
195 static int snd_ak4117_rx_info(struct snd_kcontrol *kcontrol,
196                               struct snd_ctl_elem_info *uinfo)
197 {
198         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
199         uinfo->count = 1;
200         uinfo->value.integer.min = 0;
201         uinfo->value.integer.max = 1;
202         return 0;
203 }
204 
205 static int snd_ak4117_rx_get(struct snd_kcontrol *kcontrol,
206                              struct snd_ctl_elem_value *ucontrol)
207 {
208         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
209 
210         ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) ? 1 : 0;
211         return 0;
212 }
213 
214 static int snd_ak4117_rx_put(struct snd_kcontrol *kcontrol,
215                              struct snd_ctl_elem_value *ucontrol)
216 {
217         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
218         int change;
219         u8 old_val;
220         
221         spin_lock_irq(&chip->lock);
222         old_val = chip->regmap[AK4117_REG_IO];
223         change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 0);
224         if (change)
225                 reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | (ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
226         spin_unlock_irq(&chip->lock);
227         return change;
228 }
229 
230 static int snd_ak4117_rate_info(struct snd_kcontrol *kcontrol,
231                                 struct snd_ctl_elem_info *uinfo)
232 {
233         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
234         uinfo->count = 1;
235         uinfo->value.integer.min = 0;
236         uinfo->value.integer.max = 192000;
237         return 0;
238 }
239 
240 static int snd_ak4117_rate_get(struct snd_kcontrol *kcontrol,
241                                struct snd_ctl_elem_value *ucontrol)
242 {
243         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
244 
245         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4117_REG_RCS1));
246         return 0;
247 }
248 
249 static int snd_ak4117_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
250 {
251         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
252         uinfo->count = 1;
253         return 0;
254 }
255 
256 static int snd_ak4117_spdif_get(struct snd_kcontrol *kcontrol,
257                                 struct snd_ctl_elem_value *ucontrol)
258 {
259         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
260         unsigned i;
261 
262         for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
263                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + i);
264         return 0;
265 }
266 
267 static int snd_ak4117_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
268 {
269         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
270         uinfo->count = 1;
271         return 0;
272 }
273 
274 static int snd_ak4117_spdif_mask_get(struct snd_kcontrol *kcontrol,
275                                       struct snd_ctl_elem_value *ucontrol)
276 {
277         memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
278         return 0;
279 }
280 
281 static int snd_ak4117_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
282 {
283         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
284         uinfo->value.integer.min = 0;
285         uinfo->value.integer.max = 0xffff;
286         uinfo->count = 4;
287         return 0;
288 }
289 
290 static int snd_ak4117_spdif_pget(struct snd_kcontrol *kcontrol,
291                                  struct snd_ctl_elem_value *ucontrol)
292 {
293         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
294         unsigned short tmp;
295 
296         ucontrol->value.integer.value[0] = 0xf8f2;
297         ucontrol->value.integer.value[1] = 0x4e1f;
298         tmp = reg_read(chip, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
299         ucontrol->value.integer.value[2] = tmp;
300         tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
301         ucontrol->value.integer.value[3] = tmp;
302         return 0;
303 }
304 
305 static int snd_ak4117_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
306 {
307         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
308         uinfo->count = AK4117_REG_QSUB_SIZE;
309         return 0;
310 }
311 
312 static int snd_ak4117_spdif_qget(struct snd_kcontrol *kcontrol,
313                                  struct snd_ctl_elem_value *ucontrol)
314 {
315         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
316         unsigned i;
317 
318         for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
319                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + i);
320         return 0;
321 }
322 
323 /* Don't forget to change AK4117_CONTROLS define!!! */
324 static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
325 {
326         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
327         .name =         "IEC958 Parity Errors",
328         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
329         .info =         snd_ak4117_in_error_info,
330         .get =          snd_ak4117_in_error_get,
331         .private_value = offsetof(struct ak4117, parity_errors),
332 },
333 {
334         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
335         .name =         "IEC958 V-Bit Errors",
336         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
337         .info =         snd_ak4117_in_error_info,
338         .get =          snd_ak4117_in_error_get,
339         .private_value = offsetof(struct ak4117, v_bit_errors),
340 },
341 {
342         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
343         .name =         "IEC958 C-CRC Errors",
344         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
345         .info =         snd_ak4117_in_error_info,
346         .get =          snd_ak4117_in_error_get,
347         .private_value = offsetof(struct ak4117, ccrc_errors),
348 },
349 {
350         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
351         .name =         "IEC958 Q-CRC Errors",
352         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
353         .info =         snd_ak4117_in_error_info,
354         .get =          snd_ak4117_in_error_get,
355         .private_value = offsetof(struct ak4117, qcrc_errors),
356 },
357 {
358         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
359         .name =         "IEC958 External Rate",
360         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
361         .info =         snd_ak4117_rate_info,
362         .get =          snd_ak4117_rate_get,
363 },
364 {
365         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
366         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
367         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
368         .info =         snd_ak4117_spdif_mask_info,
369         .get =          snd_ak4117_spdif_mask_get,
370 },
371 {
372         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
373         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
374         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
375         .info =         snd_ak4117_spdif_info,
376         .get =          snd_ak4117_spdif_get,
377 },
378 {
379         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
380         .name =         "IEC958 Preamble Capture Default",
381         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
382         .info =         snd_ak4117_spdif_pinfo,
383         .get =          snd_ak4117_spdif_pget,
384 },
385 {
386         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
387         .name =         "IEC958 Q-subcode Capture Default",
388         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
389         .info =         snd_ak4117_spdif_qinfo,
390         .get =          snd_ak4117_spdif_qget,
391 },
392 {
393         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
394         .name =         "IEC958 Audio",
395         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
396         .info =         snd_ak4117_in_bit_info,
397         .get =          snd_ak4117_in_bit_get,
398         .private_value = (1<<31) | (3<<8) | AK4117_REG_RCS0,
399 },
400 {
401         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
402         .name =         "IEC958 Non-PCM Bitstream",
403         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
404         .info =         snd_ak4117_in_bit_info,
405         .get =          snd_ak4117_in_bit_get,
406         .private_value = (5<<8) | AK4117_REG_RCS1,
407 },
408 {
409         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
410         .name =         "IEC958 DTS Bitstream",
411         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
412         .info =         snd_ak4117_in_bit_info,
413         .get =          snd_ak4117_in_bit_get,
414         .private_value = (6<<8) | AK4117_REG_RCS1,
415 },
416 {
417         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
418         .name =         "AK4117 Input Select",
419         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
420         .info =         snd_ak4117_rx_info,
421         .get =          snd_ak4117_rx_get,
422         .put =          snd_ak4117_rx_put,
423 }
424 };
425 
426 int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substream)
427 {
428         struct snd_kcontrol *kctl;
429         unsigned int idx;
430         int err;
431 
432         if (snd_BUG_ON(!cap_substream))
433                 return -EINVAL;
434         ak4117->substream = cap_substream;
435         for (idx = 0; idx < AK4117_CONTROLS; idx++) {
436                 kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
437                 if (kctl == NULL)
438                         return -ENOMEM;
439                 kctl->id.device = cap_substream->pcm->device;
440                 kctl->id.subdevice = cap_substream->number;
441                 err = snd_ctl_add(ak4117->card, kctl);
442                 if (err < 0)
443                         return err;
444                 ak4117->kctls[idx] = kctl;
445         }
446         return 0;
447 }
448 
449 int snd_ak4117_external_rate(struct ak4117 *ak4117)
450 {
451         unsigned char rcs1;
452 
453         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
454         return external_rate(rcs1);
455 }
456 
457 int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
458 {
459         struct snd_pcm_runtime *runtime = ak4117->substream ? ak4117->substream->runtime : NULL;
460         unsigned long _flags;
461         int res = 0;
462         unsigned char rcs0, rcs1, rcs2;
463         unsigned char c0, c1;
464 
465         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
466         if (flags & AK4117_CHECK_NO_STAT)
467                 goto __rate;
468         rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
469         rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
470         // printk(KERN_DEBUG "AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
471         spin_lock_irqsave(&ak4117->lock, _flags);
472         if (rcs0 & AK4117_PAR)
473                 ak4117->parity_errors++;
474         if (rcs0 & AK4117_V)
475                 ak4117->v_bit_errors++;
476         if (rcs2 & AK4117_CCRC)
477                 ak4117->ccrc_errors++;
478         if (rcs2 & AK4117_QCRC)
479                 ak4117->qcrc_errors++;
480         c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
481                      (rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
482         c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
483                      (rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
484         ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
485         ak4117->rcs1 = rcs1;
486         ak4117->rcs2 = rcs2;
487         spin_unlock_irqrestore(&ak4117->lock, _flags);
488 
489         if (rcs0 & AK4117_PAR)
490                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[0]->id);
491         if (rcs0 & AK4117_V)
492                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[1]->id);
493         if (rcs2 & AK4117_CCRC)
494                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[2]->id);
495         if (rcs2 & AK4117_QCRC)
496                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[3]->id);
497 
498         /* rate change */
499         if (c1 & 0x0f)
500                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[4]->id);
501 
502         if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
503                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[6]->id);
504         if (c0 & AK4117_QINT)
505                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[8]->id);
506 
507         if (c0 & AK4117_AUDION)
508                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[9]->id);
509         if (c1 & AK4117_NPCM)
510                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[10]->id);
511         if (c1 & AK4117_DTSCD)
512                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[11]->id);
513                 
514         if (ak4117->change_callback && (c0 | c1) != 0)
515                 ak4117->change_callback(ak4117, c0, c1);
516 
517       __rate:
518         /* compare rate */
519         res = external_rate(rcs1);
520         if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
521                 snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
522                 if (snd_pcm_running(ak4117->substream)) {
523                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
524                         snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
525                         wake_up(&runtime->sleep);
526                         res = 1;
527                 }
528                 snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
529         }
530         return res;
531 }
532 
533 static void snd_ak4117_timer(unsigned long data)
534 {
535         struct ak4117 *chip = (struct ak4117 *)data;
536 
537         if (chip->init)
538                 return;
539         snd_ak4117_check_rate_and_errors(chip, 0);
540         mod_timer(&chip->timer, 1 + jiffies);
541 }
542 
543 EXPORT_SYMBOL(snd_ak4117_create);
544 EXPORT_SYMBOL(snd_ak4117_reg_write);
545 EXPORT_SYMBOL(snd_ak4117_reinit);
546 EXPORT_SYMBOL(snd_ak4117_build);
547 EXPORT_SYMBOL(snd_ak4117_external_rate);
548 EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);
549 

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