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KEYS: add missing permission check for request_key() destination
[linux/fpc-iii.git] / sound / i2c / other / ak4114.c
blobb70e6eccbd035372e48098188f32aa99e83b4ea5
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 < ARRAY_SIZE(ak4114->regmap) ? ak4114->regmap[i] : 0);
64 }
65 #endif
66
67 static void snd_ak4114_free(struct ak4114 *chip)
68 {
69 atomic_inc(&chip->wq_processing); /* don't schedule new work */
70 cancel_delayed_work_sync(&chip->work);
71 kfree(chip);
72 }
73
74 static int snd_ak4114_dev_free(struct snd_device *device)
75 {
76 struct ak4114 *chip = device->device_data;
77 snd_ak4114_free(chip);
78 return 0;
79 }
80
81 int snd_ak4114_create(struct snd_card *card,
82 ak4114_read_t *read, ak4114_write_t *write,
83 const unsigned char pgm[6], const unsigned char txcsb[5],
84 void *private_data, struct ak4114 **r_ak4114)
85 {
86 struct ak4114 *chip;
87 int err = 0;
88 unsigned char reg;
89 static struct snd_device_ops ops = {
90 .dev_free = snd_ak4114_dev_free,
91 };
92
93 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
94 if (chip == NULL)
95 return -ENOMEM;
96 spin_lock_init(&chip->lock);
97 chip->card = card;
98 chip->read = read;
99 chip->write = write;
100 chip->private_data = private_data;
101 INIT_DELAYED_WORK(&chip->work, ak4114_stats);
102 atomic_set(&chip->wq_processing, 0);
103
104 for (reg = 0; reg < 6; 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_CODEC, 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 < 6; 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 if (atomic_inc_return(&chip->wq_processing) == 1)
156 cancel_delayed_work_sync(&chip->work);
157 ak4114_init_regs(chip);
158 /* bring up statistics / event queing */
159 if (atomic_dec_and_test(&chip->wq_processing))
160 schedule_delayed_work(&chip->work, HZ / 10);
161 }
162
163 static unsigned int external_rate(unsigned char rcs1)
164 {
165 switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
166 case AK4114_FS_32000HZ: return 32000;
167 case AK4114_FS_44100HZ: return 44100;
168 case AK4114_FS_48000HZ: return 48000;
169 case AK4114_FS_88200HZ: return 88200;
170 case AK4114_FS_96000HZ: return 96000;
171 case AK4114_FS_176400HZ: return 176400;
172 case AK4114_FS_192000HZ: return 192000;
173 default: return 0;
174 }
175 }
176
177 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_info *uinfo)
179 {
180 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
181 uinfo->count = 1;
182 uinfo->value.integer.min = 0;
183 uinfo->value.integer.max = LONG_MAX;
184 return 0;
185 }
186
187 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
188 struct snd_ctl_elem_value *ucontrol)
189 {
190 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
191 long *ptr;
192
193 spin_lock_irq(&chip->lock);
194 ptr = (long *)(((char *)chip) + kcontrol->private_value);
195 ucontrol->value.integer.value[0] = *ptr;
196 *ptr = 0;
197 spin_unlock_irq(&chip->lock);
198 return 0;
199 }
200
201 #define snd_ak4114_in_bit_info snd_ctl_boolean_mono_info
202
203 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
204 struct snd_ctl_elem_value *ucontrol)
205 {
206 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
207 unsigned char reg = kcontrol->private_value & 0xff;
208 unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
209 unsigned char inv = (kcontrol->private_value >> 31) & 1;
210
211 ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
212 return 0;
213 }
214
215 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
216 struct snd_ctl_elem_info *uinfo)
217 {
218 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
219 uinfo->count = 1;
220 uinfo->value.integer.min = 0;
221 uinfo->value.integer.max = 192000;
222 return 0;
223 }
224
225 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
226 struct snd_ctl_elem_value *ucontrol)
227 {
228 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
229
230 ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
231 return 0;
232 }
233
234 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
235 {
236 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
237 uinfo->count = 1;
238 return 0;
239 }
240
241 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
242 struct snd_ctl_elem_value *ucontrol)
243 {
244 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
245 unsigned i;
246
247 for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
248 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
249 return 0;
250 }
251
252 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
253 struct snd_ctl_elem_value *ucontrol)
254 {
255 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
256 unsigned i;
257
258 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
259 ucontrol->value.iec958.status[i] = chip->txcsb[i];
260 return 0;
261 }
262
263 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
264 struct snd_ctl_elem_value *ucontrol)
265 {
266 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
267 unsigned i;
268
269 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
270 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
271 return 0;
272 }
273
274 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
275 {
276 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
277 uinfo->count = 1;
278 return 0;
279 }
280
281 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
282 struct snd_ctl_elem_value *ucontrol)
283 {
284 memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
285 return 0;
286 }
287
288 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
289 {
290 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
291 uinfo->value.integer.min = 0;
292 uinfo->value.integer.max = 0xffff;
293 uinfo->count = 4;
294 return 0;
295 }
296
297 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
298 struct snd_ctl_elem_value *ucontrol)
299 {
300 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
301 unsigned short tmp;
302
303 ucontrol->value.integer.value[0] = 0xf8f2;
304 ucontrol->value.integer.value[1] = 0x4e1f;
305 tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
306 ucontrol->value.integer.value[2] = tmp;
307 tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
308 ucontrol->value.integer.value[3] = tmp;
309 return 0;
310 }
311
312 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
313 {
314 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
315 uinfo->count = AK4114_REG_QSUB_SIZE;
316 return 0;
317 }
318
319 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
320 struct snd_ctl_elem_value *ucontrol)
321 {
322 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
323 unsigned i;
324
325 for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
326 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
327 return 0;
328 }
329
330 /* Don't forget to change AK4114_CONTROLS define!!! */
331 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
332 {
333 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
334 .name = "IEC958 Parity Errors",
335 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
336 .info = snd_ak4114_in_error_info,
337 .get = snd_ak4114_in_error_get,
338 .private_value = offsetof(struct ak4114, parity_errors),
339 },
340 {
341 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
342 .name = "IEC958 V-Bit Errors",
343 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
344 .info = snd_ak4114_in_error_info,
345 .get = snd_ak4114_in_error_get,
346 .private_value = offsetof(struct ak4114, v_bit_errors),
347 },
348 {
349 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
350 .name = "IEC958 C-CRC Errors",
351 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
352 .info = snd_ak4114_in_error_info,
353 .get = snd_ak4114_in_error_get,
354 .private_value = offsetof(struct ak4114, ccrc_errors),
355 },
356 {
357 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
358 .name = "IEC958 Q-CRC Errors",
359 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
360 .info = snd_ak4114_in_error_info,
361 .get = snd_ak4114_in_error_get,
362 .private_value = offsetof(struct ak4114, qcrc_errors),
363 },
364 {
365 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
366 .name = "IEC958 External Rate",
367 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
368 .info = snd_ak4114_rate_info,
369 .get = snd_ak4114_rate_get,
370 },
371 {
372 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
373 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
374 .access = SNDRV_CTL_ELEM_ACCESS_READ,
375 .info = snd_ak4114_spdif_mask_info,
376 .get = snd_ak4114_spdif_mask_get,
377 },
378 {
379 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
380 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
381 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
382 .info = snd_ak4114_spdif_info,
383 .get = snd_ak4114_spdif_playback_get,
384 .put = snd_ak4114_spdif_playback_put,
385 },
386 {
387 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
388 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
389 .access = SNDRV_CTL_ELEM_ACCESS_READ,
390 .info = snd_ak4114_spdif_mask_info,
391 .get = snd_ak4114_spdif_mask_get,
392 },
393 {
394 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
395 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
396 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
397 .info = snd_ak4114_spdif_info,
398 .get = snd_ak4114_spdif_get,
399 },
400 {
401 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
402 .name = "IEC958 Preamble Capture Default",
403 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
404 .info = snd_ak4114_spdif_pinfo,
405 .get = snd_ak4114_spdif_pget,
406 },
407 {
408 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
409 .name = "IEC958 Q-subcode Capture Default",
410 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
411 .info = snd_ak4114_spdif_qinfo,
412 .get = snd_ak4114_spdif_qget,
413 },
414 {
415 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
416 .name = "IEC958 Audio",
417 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
418 .info = snd_ak4114_in_bit_info,
419 .get = snd_ak4114_in_bit_get,
420 .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
421 },
422 {
423 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
424 .name = "IEC958 Non-PCM Bitstream",
425 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
426 .info = snd_ak4114_in_bit_info,
427 .get = snd_ak4114_in_bit_get,
428 .private_value = (6<<8) | AK4114_REG_RCS0,
429 },
430 {
431 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
432 .name = "IEC958 DTS Bitstream",
433 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
434 .info = snd_ak4114_in_bit_info,
435 .get = snd_ak4114_in_bit_get,
436 .private_value = (3<<8) | AK4114_REG_RCS0,
437 },
438 {
439 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
440 .name = "IEC958 PPL Lock Status",
441 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
442 .info = snd_ak4114_in_bit_info,
443 .get = snd_ak4114_in_bit_get,
444 .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
445 }
446 };
447
448
449 static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
450 struct snd_info_buffer *buffer)
451 {
452 struct ak4114 *ak4114 = entry->private_data;
453 int reg, val;
454 /* all ak4114 registers 0x00 - 0x1f */
455 for (reg = 0; reg < 0x20; reg++) {
456 val = reg_read(ak4114, reg);
457 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
458 }
459 }
460
461 static void snd_ak4114_proc_init(struct ak4114 *ak4114)
462 {
463 struct snd_info_entry *entry;
464 if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
465 snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
466 }
467
468 int snd_ak4114_build(struct ak4114 *ak4114,
469 struct snd_pcm_substream *ply_substream,
470 struct snd_pcm_substream *cap_substream)
471 {
472 struct snd_kcontrol *kctl;
473 unsigned int idx;
474 int err;
475
476 if (snd_BUG_ON(!cap_substream))
477 return -EINVAL;
478 ak4114->playback_substream = ply_substream;
479 ak4114->capture_substream = cap_substream;
480 for (idx = 0; idx < AK4114_CONTROLS; idx++) {
481 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
482 if (kctl == NULL)
483 return -ENOMEM;
484 if (strstr(kctl->id.name, "Playback")) {
485 if (ply_substream == NULL) {
486 snd_ctl_free_one(kctl);
487 ak4114->kctls[idx] = NULL;
488 continue;
489 }
490 kctl->id.device = ply_substream->pcm->device;
491 kctl->id.subdevice = ply_substream->number;
492 } else {
493 kctl->id.device = cap_substream->pcm->device;
494 kctl->id.subdevice = cap_substream->number;
495 }
496 err = snd_ctl_add(ak4114->card, kctl);
497 if (err < 0)
498 return err;
499 ak4114->kctls[idx] = kctl;
500 }
501 snd_ak4114_proc_init(ak4114);
502 /* trigger workq */
503 schedule_delayed_work(&ak4114->work, HZ / 10);
504 return 0;
505 }
506
507 /* notify kcontrols if any parameters are changed */
508 static void ak4114_notify(struct ak4114 *ak4114,
509 unsigned char rcs0, unsigned char rcs1,
510 unsigned char c0, unsigned char c1)
511 {
512 if (!ak4114->kctls[0])
513 return;
514
515 if (rcs0 & AK4114_PAR)
516 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
517 &ak4114->kctls[0]->id);
518 if (rcs0 & AK4114_V)
519 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
520 &ak4114->kctls[1]->id);
521 if (rcs1 & AK4114_CCRC)
522 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
523 &ak4114->kctls[2]->id);
524 if (rcs1 & AK4114_QCRC)
525 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
526 &ak4114->kctls[3]->id);
527
528 /* rate change */
529 if (c1 & 0xf0)
530 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
531 &ak4114->kctls[4]->id);
532
533 if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
534 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
535 &ak4114->kctls[9]->id);
536 if (c0 & AK4114_QINT)
537 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
538 &ak4114->kctls[10]->id);
539
540 if (c0 & AK4114_AUDION)
541 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
542 &ak4114->kctls[11]->id);
543 if (c0 & AK4114_AUTO)
544 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
545 &ak4114->kctls[12]->id);
546 if (c0 & AK4114_DTSCD)
547 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
548 &ak4114->kctls[13]->id);
549 if (c0 & AK4114_UNLCK)
550 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
551 &ak4114->kctls[14]->id);
552 }
553
554 int snd_ak4114_external_rate(struct ak4114 *ak4114)
555 {
556 unsigned char rcs1;
557
558 rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
559 return external_rate(rcs1);
560 }
561
562 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
563 {
564 struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
565 unsigned long _flags;
566 int res = 0;
567 unsigned char rcs0, rcs1;
568 unsigned char c0, c1;
569
570 rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
571 if (flags & AK4114_CHECK_NO_STAT)
572 goto __rate;
573 rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
574 spin_lock_irqsave(&ak4114->lock, _flags);
575 if (rcs0 & AK4114_PAR)
576 ak4114->parity_errors++;
577 if (rcs1 & AK4114_V)
578 ak4114->v_bit_errors++;
579 if (rcs1 & AK4114_CCRC)
580 ak4114->ccrc_errors++;
581 if (rcs1 & AK4114_QCRC)
582 ak4114->qcrc_errors++;
583 c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
584 (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
585 c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
586 ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
587 ak4114->rcs1 = rcs1;
588 spin_unlock_irqrestore(&ak4114->lock, _flags);
589
590 ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
591 if (ak4114->change_callback && (c0 | c1) != 0)
592 ak4114->change_callback(ak4114, c0, c1);
593
594 __rate:
595 /* compare rate */
596 res = external_rate(rcs1);
597 if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
598 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
599 if (snd_pcm_running(ak4114->capture_substream)) {
600 // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
601 snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
602 res = 1;
603 }
604 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
605 }
606 return res;
607 }
608
609 static void ak4114_stats(struct work_struct *work)
610 {
611 struct ak4114 *chip = container_of(work, struct ak4114, work.work);
612
613 if (atomic_inc_return(&chip->wq_processing) == 1)
614 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
615 if (atomic_dec_and_test(&chip->wq_processing))
616 schedule_delayed_work(&chip->work, HZ / 10);
617 }
618
619 EXPORT_SYMBOL(snd_ak4114_create);
620 EXPORT_SYMBOL(snd_ak4114_reg_write);
621 EXPORT_SYMBOL(snd_ak4114_reinit);
622 EXPORT_SYMBOL(snd_ak4114_build);
623 EXPORT_SYMBOL(snd_ak4114_external_rate);
624 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
Linux with added FPC-III support