~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

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

Version: ~ [ linux-5.6-rc1 ] ~ [ linux-5.5.2 ] ~ [ linux-5.4.17 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.102 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.170 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.213 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.213 ] ~ [ 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-3.16.81 ] ~ [ 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-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ 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(struct timer_list *t);
 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         timer_setup(&chip->timer, snd_ak4117_timer, 0);
 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 
172         spin_lock_irq(&chip->lock);
173         ucontrol->value.integer.value[0] =
174                        chip->errors[kcontrol->private_value];
175         chip->errors[kcontrol->private_value] = 0;
176         spin_unlock_irq(&chip->lock);
177         return 0;
178 }
179 
180 #define snd_ak4117_in_bit_info          snd_ctl_boolean_mono_info
181 
182 static int snd_ak4117_in_bit_get(struct snd_kcontrol *kcontrol,
183                                  struct snd_ctl_elem_value *ucontrol)
184 {
185         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
186         unsigned char reg = kcontrol->private_value & 0xff;
187         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
188         unsigned char inv = (kcontrol->private_value >> 31) & 1;
189 
190         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
191         return 0;
192 }
193 
194 static int snd_ak4117_rx_info(struct snd_kcontrol *kcontrol,
195                               struct snd_ctl_elem_info *uinfo)
196 {
197         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
198         uinfo->count = 1;
199         uinfo->value.integer.min = 0;
200         uinfo->value.integer.max = 1;
201         return 0;
202 }
203 
204 static int snd_ak4117_rx_get(struct snd_kcontrol *kcontrol,
205                              struct snd_ctl_elem_value *ucontrol)
206 {
207         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
208 
209         ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) ? 1 : 0;
210         return 0;
211 }
212 
213 static int snd_ak4117_rx_put(struct snd_kcontrol *kcontrol,
214                              struct snd_ctl_elem_value *ucontrol)
215 {
216         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
217         int change;
218         u8 old_val;
219         
220         spin_lock_irq(&chip->lock);
221         old_val = chip->regmap[AK4117_REG_IO];
222         change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 0);
223         if (change)
224                 reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | (ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
225         spin_unlock_irq(&chip->lock);
226         return change;
227 }
228 
229 static int snd_ak4117_rate_info(struct snd_kcontrol *kcontrol,
230                                 struct snd_ctl_elem_info *uinfo)
231 {
232         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
233         uinfo->count = 1;
234         uinfo->value.integer.min = 0;
235         uinfo->value.integer.max = 192000;
236         return 0;
237 }
238 
239 static int snd_ak4117_rate_get(struct snd_kcontrol *kcontrol,
240                                struct snd_ctl_elem_value *ucontrol)
241 {
242         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
243 
244         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4117_REG_RCS1));
245         return 0;
246 }
247 
248 static int snd_ak4117_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
249 {
250         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
251         uinfo->count = 1;
252         return 0;
253 }
254 
255 static int snd_ak4117_spdif_get(struct snd_kcontrol *kcontrol,
256                                 struct snd_ctl_elem_value *ucontrol)
257 {
258         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
259         unsigned i;
260 
261         for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
262                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + i);
263         return 0;
264 }
265 
266 static int snd_ak4117_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
267 {
268         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
269         uinfo->count = 1;
270         return 0;
271 }
272 
273 static int snd_ak4117_spdif_mask_get(struct snd_kcontrol *kcontrol,
274                                       struct snd_ctl_elem_value *ucontrol)
275 {
276         memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
277         return 0;
278 }
279 
280 static int snd_ak4117_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
281 {
282         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
283         uinfo->value.integer.min = 0;
284         uinfo->value.integer.max = 0xffff;
285         uinfo->count = 4;
286         return 0;
287 }
288 
289 static int snd_ak4117_spdif_pget(struct snd_kcontrol *kcontrol,
290                                  struct snd_ctl_elem_value *ucontrol)
291 {
292         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
293         unsigned short tmp;
294 
295         ucontrol->value.integer.value[0] = 0xf8f2;
296         ucontrol->value.integer.value[1] = 0x4e1f;
297         tmp = reg_read(chip, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
298         ucontrol->value.integer.value[2] = tmp;
299         tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
300         ucontrol->value.integer.value[3] = tmp;
301         return 0;
302 }
303 
304 static int snd_ak4117_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
305 {
306         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
307         uinfo->count = AK4117_REG_QSUB_SIZE;
308         return 0;
309 }
310 
311 static int snd_ak4117_spdif_qget(struct snd_kcontrol *kcontrol,
312                                  struct snd_ctl_elem_value *ucontrol)
313 {
314         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
315         unsigned i;
316 
317         for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
318                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + i);
319         return 0;
320 }
321 
322 /* Don't forget to change AK4117_CONTROLS define!!! */
323 static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
324 {
325         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
326         .name =         "IEC958 Parity Errors",
327         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
328         .info =         snd_ak4117_in_error_info,
329         .get =          snd_ak4117_in_error_get,
330         .private_value = AK4117_PARITY_ERRORS,
331 },
332 {
333         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
334         .name =         "IEC958 V-Bit Errors",
335         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
336         .info =         snd_ak4117_in_error_info,
337         .get =          snd_ak4117_in_error_get,
338         .private_value = AK4117_V_BIT_ERRORS,
339 },
340 {
341         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
342         .name =         "IEC958 C-CRC Errors",
343         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
344         .info =         snd_ak4117_in_error_info,
345         .get =          snd_ak4117_in_error_get,
346         .private_value = AK4117_CCRC_ERRORS,
347 },
348 {
349         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
350         .name =         "IEC958 Q-CRC Errors",
351         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
352         .info =         snd_ak4117_in_error_info,
353         .get =          snd_ak4117_in_error_get,
354         .private_value = AK4117_QCRC_ERRORS,
355 },
356 {
357         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
358         .name =         "IEC958 External Rate",
359         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
360         .info =         snd_ak4117_rate_info,
361         .get =          snd_ak4117_rate_get,
362 },
363 {
364         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
365         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
366         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
367         .info =         snd_ak4117_spdif_mask_info,
368         .get =          snd_ak4117_spdif_mask_get,
369 },
370 {
371         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
372         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
373         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
374         .info =         snd_ak4117_spdif_info,
375         .get =          snd_ak4117_spdif_get,
376 },
377 {
378         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
379         .name =         "IEC958 Preamble Capture Default",
380         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
381         .info =         snd_ak4117_spdif_pinfo,
382         .get =          snd_ak4117_spdif_pget,
383 },
384 {
385         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
386         .name =         "IEC958 Q-subcode Capture Default",
387         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
388         .info =         snd_ak4117_spdif_qinfo,
389         .get =          snd_ak4117_spdif_qget,
390 },
391 {
392         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
393         .name =         "IEC958 Audio",
394         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
395         .info =         snd_ak4117_in_bit_info,
396         .get =          snd_ak4117_in_bit_get,
397         .private_value = (1<<31) | (3<<8) | AK4117_REG_RCS0,
398 },
399 {
400         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
401         .name =         "IEC958 Non-PCM Bitstream",
402         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
403         .info =         snd_ak4117_in_bit_info,
404         .get =          snd_ak4117_in_bit_get,
405         .private_value = (5<<8) | AK4117_REG_RCS1,
406 },
407 {
408         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
409         .name =         "IEC958 DTS Bitstream",
410         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
411         .info =         snd_ak4117_in_bit_info,
412         .get =          snd_ak4117_in_bit_get,
413         .private_value = (6<<8) | AK4117_REG_RCS1,
414 },
415 {
416         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
417         .name =         "AK4117 Input Select",
418         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
419         .info =         snd_ak4117_rx_info,
420         .get =          snd_ak4117_rx_get,
421         .put =          snd_ak4117_rx_put,
422 }
423 };
424 
425 int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substream)
426 {
427         struct snd_kcontrol *kctl;
428         unsigned int idx;
429         int err;
430 
431         if (snd_BUG_ON(!cap_substream))
432                 return -EINVAL;
433         ak4117->substream = cap_substream;
434         for (idx = 0; idx < AK4117_CONTROLS; idx++) {
435                 kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
436                 if (kctl == NULL)
437                         return -ENOMEM;
438                 kctl->id.device = cap_substream->pcm->device;
439                 kctl->id.subdevice = cap_substream->number;
440                 err = snd_ctl_add(ak4117->card, kctl);
441                 if (err < 0)
442                         return err;
443                 ak4117->kctls[idx] = kctl;
444         }
445         return 0;
446 }
447 
448 int snd_ak4117_external_rate(struct ak4117 *ak4117)
449 {
450         unsigned char rcs1;
451 
452         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
453         return external_rate(rcs1);
454 }
455 
456 int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
457 {
458         struct snd_pcm_runtime *runtime = ak4117->substream ? ak4117->substream->runtime : NULL;
459         unsigned long _flags;
460         int res = 0;
461         unsigned char rcs0, rcs1, rcs2;
462         unsigned char c0, c1;
463 
464         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
465         if (flags & AK4117_CHECK_NO_STAT)
466                 goto __rate;
467         rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
468         rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
469         // printk(KERN_DEBUG "AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
470         spin_lock_irqsave(&ak4117->lock, _flags);
471         if (rcs0 & AK4117_PAR)
472                 ak4117->errors[AK4117_PARITY_ERRORS]++;
473         if (rcs0 & AK4117_V)
474                 ak4117->errors[AK4117_V_BIT_ERRORS]++;
475         if (rcs2 & AK4117_CCRC)
476                 ak4117->errors[AK4117_CCRC_ERRORS]++;
477         if (rcs2 & AK4117_QCRC)
478                 ak4117->errors[AK4117_QCRC_ERRORS]++;
479         c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
480                      (rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
481         c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
482                      (rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
483         ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
484         ak4117->rcs1 = rcs1;
485         ak4117->rcs2 = rcs2;
486         spin_unlock_irqrestore(&ak4117->lock, _flags);
487 
488         if (rcs0 & AK4117_PAR)
489                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[0]->id);
490         if (rcs0 & AK4117_V)
491                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[1]->id);
492         if (rcs2 & AK4117_CCRC)
493                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[2]->id);
494         if (rcs2 & AK4117_QCRC)
495                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[3]->id);
496 
497         /* rate change */
498         if (c1 & 0x0f)
499                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[4]->id);
500 
501         if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
502                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[6]->id);
503         if (c0 & AK4117_QINT)
504                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[8]->id);
505 
506         if (c0 & AK4117_AUDION)
507                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[9]->id);
508         if (c1 & AK4117_NPCM)
509                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[10]->id);
510         if (c1 & AK4117_DTSCD)
511                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[11]->id);
512                 
513         if (ak4117->change_callback && (c0 | c1) != 0)
514                 ak4117->change_callback(ak4117, c0, c1);
515 
516       __rate:
517         /* compare rate */
518         res = external_rate(rcs1);
519         if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
520                 snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
521                 if (snd_pcm_running(ak4117->substream)) {
522                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
523                         snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
524                         wake_up(&runtime->sleep);
525                         res = 1;
526                 }
527                 snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
528         }
529         return res;
530 }
531 
532 static void snd_ak4117_timer(struct timer_list *t)
533 {
534         struct ak4117 *chip = from_timer(chip, t, timer);
535 
536         if (chip->init)
537                 return;
538         snd_ak4117_check_rate_and_errors(chip, 0);
539         mod_timer(&chip->timer, 1 + jiffies);
540 }
541 
542 EXPORT_SYMBOL(snd_ak4117_create);
543 EXPORT_SYMBOL(snd_ak4117_reg_write);
544 EXPORT_SYMBOL(snd_ak4117_reinit);
545 EXPORT_SYMBOL(snd_ak4117_build);
546 EXPORT_SYMBOL(snd_ak4117_external_rate);
547 EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);
548 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp