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Merge tag 'v3.10.68' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.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@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(&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 Preamble 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);
kernel source for telekom puls (alcatel/mediatek)