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ALSA: ak411x: Add PM helper functions
[deliverable/linux.git] / sound / i2c / other / ak4114.c
CommitLineData
1da177e4
LT		 1/*
2 * Routines for control of the AK4114 via I2C and 4-wire serial interface
3 * IEC958 (S/PDIF) receiver by Asahi Kasei
c1017a4c 4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 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
1da177e4
LT		 23#include <linux/slab.h>
24#include <linux/delay.h>
da155d5b 25#include <linux/module.h>
1da177e4
LT		 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>
fdafad6f 31#include <sound/info.h>
1da177e4 32
c1017a4c 33MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4
LT		 34MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
35MODULE_LICENSE("GPL");
36
37#define AK4114_ADDR 0x00 /* fixed address */
38
c4028958 39static void ak4114_stats(struct work_struct *work);
51354ae3 40static void ak4114_init_regs(struct ak4114 *chip);
1da177e4 41
97f02e05 42static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
1da177e4
LT		 43{
44 ak4114->write(ak4114->private_data, reg, val);
45 if (reg <= AK4114_REG_INT1_MASK)
46 ak4114->regmap[reg] = val;
1ab774e0
JD		 47 else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
48 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
1da177e4
LT		 49}
50
97f02e05 51static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
1da177e4
LT		 52{
53 return ak4114->read(ak4114->private_data, reg);
54}
55
56#if 0
97f02e05 57static void reg_dump(struct ak4114 *ak4114)
1da177e4
LT		 58{
59 int i;
60
99b359ba 61 printk(KERN_DEBUG "AK4114 REG DUMP:\n");
1da177e4 62 for (i = 0; i < 0x20; i++)
e12483e0 63 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < ARRAY_SIZE(ak4114->regmap) ? ak4114->regmap[i] : 0);
1da177e4
LT		 64}
65#endif
66
97f02e05 67static void snd_ak4114_free(struct ak4114 *chip)
1da177e4 68{
4161b450 69 atomic_inc(&chip->wq_processing); /* don't schedule new work */
5b84ba26 70 cancel_delayed_work_sync(&chip->work);
1da177e4
LT		 71 kfree(chip);
72}
73
97f02e05 74static int snd_ak4114_dev_free(struct snd_device *device)
1da177e4 75{
97f02e05 76 struct ak4114 *chip = device->device_data;
1da177e4
LT		 77 snd_ak4114_free(chip);
78 return 0;
79}
80
97f02e05 81int snd_ak4114_create(struct snd_card *card,
1da177e4 82 ak4114_read_t *read, ak4114_write_t *write,
e12483e0 83 const unsigned char pgm[6], const unsigned char txcsb[5],
97f02e05 84 void *private_data, struct ak4114 **r_ak4114)
1da177e4 85{
97f02e05 86 struct ak4114 *chip;
1da177e4
LT		 87 int err = 0;
88 unsigned char reg;
97f02e05 89 static struct snd_device_ops ops = {
1da177e4
LT		 90 .dev_free = snd_ak4114_dev_free,
91 };
92
561b220a 93 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1da177e4
LT		 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;
3b6baa5a 101 INIT_DELAYED_WORK(&chip->work, ak4114_stats);
4161b450 102 atomic_set(&chip->wq_processing, 0);
1da177e4 103
e12483e0 104 for (reg = 0; reg < 6; reg++)
1da177e4
LT		 105 chip->regmap[reg] = pgm[reg];
106 for (reg = 0; reg < 5; reg++)
107 chip->txcsb[reg] = txcsb[reg];
108
51354ae3 109 ak4114_init_regs(chip);
1da177e4
LT		 110
111 chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
112 chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
113
483eb062 114 if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
1da177e4
LT		 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}
a850ef8a 125EXPORT_SYMBOL(snd_ak4114_create);
1da177e4 126
97f02e05 127void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
1da177e4
LT		 128{
129 if (reg <= AK4114_REG_INT1_MASK)
130 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
131 else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
1ab774e0
JD		 132 reg_write(chip, reg,
133 (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
1da177e4 134}
a850ef8a 135EXPORT_SYMBOL(snd_ak4114_reg_write);
1da177e4 136
51354ae3 137static void ak4114_init_regs(struct ak4114 *chip)
1da177e4
LT		 138{
139 unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
140
1da177e4
LT		 141 /* bring the chip to reset state and powerdown state */
142 reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
143 udelay(200);
144 /* release reset, but leave powerdown */
145 reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
146 udelay(200);
e12483e0 147 for (reg = 1; reg < 6; reg++)
1da177e4
LT		 148 reg_write(chip, reg, chip->regmap[reg]);
149 for (reg = 0; reg < 5; reg++)
150 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
151 /* release powerdown, everything is initialized now */
152 reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
51354ae3
TI		 153}
154
155void snd_ak4114_reinit(struct ak4114 *chip)
156{
4161b450
TI		 157 if (atomic_inc_return(&chip->wq_processing) == 1)
158 cancel_delayed_work_sync(&chip->work);
51354ae3 159 ak4114_init_regs(chip);
1da177e4 160 /* bring up statistics / event queing */
4161b450 161 if (atomic_dec_and_test(&chip->wq_processing))
51354ae3 162 schedule_delayed_work(&chip->work, HZ / 10);
1da177e4 163}
a850ef8a 164EXPORT_SYMBOL(snd_ak4114_reinit);
1da177e4
LT		 165
166static unsigned int external_rate(unsigned char rcs1)
167{
168 switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
169 case AK4114_FS_32000HZ: return 32000;
170 case AK4114_FS_44100HZ: return 44100;
171 case AK4114_FS_48000HZ: return 48000;
172 case AK4114_FS_88200HZ: return 88200;
173 case AK4114_FS_96000HZ: return 96000;
174 case AK4114_FS_176400HZ: return 176400;
175 case AK4114_FS_192000HZ: return 192000;
176 default: return 0;
177 }
178}
179
97f02e05
TI		 180static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
181 struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 182{
183 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
184 uinfo->count = 1;
185 uinfo->value.integer.min = 0;
186 uinfo->value.integer.max = LONG_MAX;
187 return 0;
188}
189
97f02e05
TI		 190static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
191 struct snd_ctl_elem_value *ucontrol)
1da177e4 192{
97f02e05 193 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 194 long *ptr;
195
196 spin_lock_irq(&chip->lock);
197 ptr = (long *)(((char *)chip) + kcontrol->private_value);
198 ucontrol->value.integer.value[0] = *ptr;
199 *ptr = 0;
200 spin_unlock_irq(&chip->lock);
201 return 0;
202}
203
a5ce8890 204#define snd_ak4114_in_bit_info snd_ctl_boolean_mono_info
1da177e4 205
97f02e05
TI		 206static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
207 struct snd_ctl_elem_value *ucontrol)
1da177e4 208{
97f02e05 209 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 210 unsigned char reg = kcontrol->private_value & 0xff;
211 unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
212 unsigned char inv = (kcontrol->private_value >> 31) & 1;
213
214 ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
215 return 0;
216}
217
97f02e05
TI		 218static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
219 struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 220{
221 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
222 uinfo->count = 1;
223 uinfo->value.integer.min = 0;
224 uinfo->value.integer.max = 192000;
225 return 0;
226}
227
97f02e05
TI		 228static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
229 struct snd_ctl_elem_value *ucontrol)
1da177e4 230{
97f02e05 231 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 232
233 ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
234 return 0;
235}
236
97f02e05 237static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 238{
239 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
240 uinfo->count = 1;
241 return 0;
242}
243
97f02e05
TI		 244static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
245 struct snd_ctl_elem_value *ucontrol)
1da177e4 246{
97f02e05 247 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 248 unsigned i;
249
250 for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
251 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
252 return 0;
253}
254
97f02e05
TI		 255static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
256 struct snd_ctl_elem_value *ucontrol)
1da177e4 257{
97f02e05 258 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 259 unsigned i;
260
261 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
262 ucontrol->value.iec958.status[i] = chip->txcsb[i];
263 return 0;
264}
265
97f02e05
TI		 266static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
267 struct snd_ctl_elem_value *ucontrol)
1da177e4 268{
97f02e05 269 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 270 unsigned i;
271
272 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
273 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
274 return 0;
275}
276
97f02e05 277static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 278{
279 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
280 uinfo->count = 1;
281 return 0;
282}
283
97f02e05
TI		 284static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
285 struct snd_ctl_elem_value *ucontrol)
1da177e4
LT		 286{
287 memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
288 return 0;
289}
290
97f02e05 291static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 292{
293 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
294 uinfo->value.integer.min = 0;
295 uinfo->value.integer.max = 0xffff;
296 uinfo->count = 4;
297 return 0;
298}
299
97f02e05
TI		 300static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
301 struct snd_ctl_elem_value *ucontrol)
1da177e4 302{
97f02e05 303 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 304 unsigned short tmp;
305
306 ucontrol->value.integer.value[0] = 0xf8f2;
307 ucontrol->value.integer.value[1] = 0x4e1f;
308 tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
309 ucontrol->value.integer.value[2] = tmp;
310 tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
311 ucontrol->value.integer.value[3] = tmp;
312 return 0;
313}
314
97f02e05 315static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 316{
317 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
318 uinfo->count = AK4114_REG_QSUB_SIZE;
319 return 0;
320}
321
97f02e05
TI		 322static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
323 struct snd_ctl_elem_value *ucontrol)
1da177e4 324{
97f02e05 325 struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 326 unsigned i;
327
328 for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
329 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
330 return 0;
331}
332
333/* Don't forget to change AK4114_CONTROLS define!!! */
97f02e05 334static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
1da177e4
LT		 335{
336 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
337 .name = "IEC958 Parity Errors",
338 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
339 .info = snd_ak4114_in_error_info,
340 .get = snd_ak4114_in_error_get,
97f02e05 341 .private_value = offsetof(struct ak4114, parity_errors),
1da177e4
LT		 342},
343{
344 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
345 .name = "IEC958 V-Bit Errors",
346 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
347 .info = snd_ak4114_in_error_info,
348 .get = snd_ak4114_in_error_get,
97f02e05 349 .private_value = offsetof(struct ak4114, v_bit_errors),
1da177e4
LT		 350},
351{
352 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
353 .name = "IEC958 C-CRC Errors",
354 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
355 .info = snd_ak4114_in_error_info,
356 .get = snd_ak4114_in_error_get,
97f02e05 357 .private_value = offsetof(struct ak4114, ccrc_errors),
1da177e4
LT		 358},
359{
360 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
361 .name = "IEC958 Q-CRC Errors",
362 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
363 .info = snd_ak4114_in_error_info,
364 .get = snd_ak4114_in_error_get,
97f02e05 365 .private_value = offsetof(struct ak4114, qcrc_errors),
1da177e4
LT		 366},
367{
368 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
369 .name = "IEC958 External Rate",
370 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
371 .info = snd_ak4114_rate_info,
372 .get = snd_ak4114_rate_get,
373},
374{
375 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
376 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
377 .access = SNDRV_CTL_ELEM_ACCESS_READ,
378 .info = snd_ak4114_spdif_mask_info,
379 .get = snd_ak4114_spdif_mask_get,
380},
381{
382 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
383 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
384 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
385 .info = snd_ak4114_spdif_info,
386 .get = snd_ak4114_spdif_playback_get,
387 .put = snd_ak4114_spdif_playback_put,
388},
389{
390 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
391 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
392 .access = SNDRV_CTL_ELEM_ACCESS_READ,
393 .info = snd_ak4114_spdif_mask_info,
394 .get = snd_ak4114_spdif_mask_get,
395},
396{
397 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
398 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
399 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
400 .info = snd_ak4114_spdif_info,
401 .get = snd_ak4114_spdif_get,
402},
403{
404 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
ec8f53fb 405 .name = "IEC958 Preamble Capture Default",
1da177e4
LT		 406 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
407 .info = snd_ak4114_spdif_pinfo,
408 .get = snd_ak4114_spdif_pget,
409},
410{
411 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
412 .name = "IEC958 Q-subcode Capture Default",
413 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
414 .info = snd_ak4114_spdif_qinfo,
415 .get = snd_ak4114_spdif_qget,
416},
417{
418 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
419 .name = "IEC958 Audio",
420 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
421 .info = snd_ak4114_in_bit_info,
422 .get = snd_ak4114_in_bit_get,
423 .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
424},
425{
426 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
427 .name = "IEC958 Non-PCM Bitstream",
428 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
429 .info = snd_ak4114_in_bit_info,
430 .get = snd_ak4114_in_bit_get,
c4116ae7 431 .private_value = (6<<8) | AK4114_REG_RCS0,
1da177e4
LT		 432},
433{
434 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
435 .name = "IEC958 DTS Bitstream",
436 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
437 .info = snd_ak4114_in_bit_info,
438 .get = snd_ak4114_in_bit_get,
c4116ae7
PH		 439 .private_value = (3<<8) | AK4114_REG_RCS0,
440},
441{
442 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
443 .name = "IEC958 PPL Lock Status",
444 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
445 .info = snd_ak4114_in_bit_info,
446 .get = snd_ak4114_in_bit_get,
447 .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
1da177e4
LT		 448}
449};
450
fdafad6f
PH		 451
452static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
453 struct snd_info_buffer *buffer)
454{
455 struct ak4114 *ak4114 = entry->private_data;
456 int reg, val;
457 /* all ak4114 registers 0x00 - 0x1f */
458 for (reg = 0; reg < 0x20; reg++) {
459 val = reg_read(ak4114, reg);
460 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
461 }
462}
463
464static void snd_ak4114_proc_init(struct ak4114 *ak4114)
465{
466 struct snd_info_entry *entry;
467 if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
468 snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
469}
470
97f02e05
TI		 471int snd_ak4114_build(struct ak4114 *ak4114,
472 struct snd_pcm_substream *ply_substream,
473 struct snd_pcm_substream *cap_substream)
1da177e4 474{
97f02e05 475 struct snd_kcontrol *kctl;
1da177e4
LT		 476 unsigned int idx;
477 int err;
478
5e246b85
TI		 479 if (snd_BUG_ON(!cap_substream))
480 return -EINVAL;
1da177e4
LT		 481 ak4114->playback_substream = ply_substream;
482 ak4114->capture_substream = cap_substream;
483 for (idx = 0; idx < AK4114_CONTROLS; idx++) {
484 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
485 if (kctl == NULL)
486 return -ENOMEM;
c4116ae7 487 if (strstr(kctl->id.name, "Playback")) {
1da177e4
LT		 488 if (ply_substream == NULL) {
489 snd_ctl_free_one(kctl);
490 ak4114->kctls[idx] = NULL;
491 continue;
492 }
493 kctl->id.device = ply_substream->pcm->device;
494 kctl->id.subdevice = ply_substream->number;
495 } else {
496 kctl->id.device = cap_substream->pcm->device;
497 kctl->id.subdevice = cap_substream->number;
498 }
499 err = snd_ctl_add(ak4114->card, kctl);
500 if (err < 0)
501 return err;
502 ak4114->kctls[idx] = kctl;
503 }
fdafad6f 504 snd_ak4114_proc_init(ak4114);
51354ae3
TI		 505 /* trigger workq */
506 schedule_delayed_work(&ak4114->work, HZ / 10);
1da177e4
LT		 507 return 0;
508}
a850ef8a 509EXPORT_SYMBOL(snd_ak4114_build);
1da177e4 510
51354ae3
TI		 511/* notify kcontrols if any parameters are changed */
512static void ak4114_notify(struct ak4114 *ak4114,
513 unsigned char rcs0, unsigned char rcs1,
514 unsigned char c0, unsigned char c1)
515{
516 if (!ak4114->kctls[0])
517 return;
518
519 if (rcs0 & AK4114_PAR)
520 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
521 &ak4114->kctls[0]->id);
522 if (rcs0 & AK4114_V)
523 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
524 &ak4114->kctls[1]->id);
525 if (rcs1 & AK4114_CCRC)
526 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
527 &ak4114->kctls[2]->id);
528 if (rcs1 & AK4114_QCRC)
529 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
530 &ak4114->kctls[3]->id);
531
532 /* rate change */
533 if (c1 & 0xf0)
534 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
535 &ak4114->kctls[4]->id);
536
537 if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
538 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
539 &ak4114->kctls[9]->id);
540 if (c0 & AK4114_QINT)
541 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
542 &ak4114->kctls[10]->id);
543
544 if (c0 & AK4114_AUDION)
545 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
546 &ak4114->kctls[11]->id);
547 if (c0 & AK4114_AUTO)
548 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
549 &ak4114->kctls[12]->id);
550 if (c0 & AK4114_DTSCD)
551 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
552 &ak4114->kctls[13]->id);
c4116ae7
PH		 553 if (c0 & AK4114_UNLCK)
554 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
555 &ak4114->kctls[14]->id);
51354ae3
TI		 556}
557
97f02e05 558int snd_ak4114_external_rate(struct ak4114 *ak4114)
1da177e4
LT		 559{
560 unsigned char rcs1;
561
562 rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
563 return external_rate(rcs1);
564}
a850ef8a 565EXPORT_SYMBOL(snd_ak4114_external_rate);
1da177e4 566
97f02e05 567int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
1da177e4 568{
97f02e05 569 struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
1da177e4
LT		 570 unsigned long _flags;
571 int res = 0;
572 unsigned char rcs0, rcs1;
573 unsigned char c0, c1;
574
575 rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
576 if (flags & AK4114_CHECK_NO_STAT)
577 goto __rate;
578 rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
579 spin_lock_irqsave(&ak4114->lock, _flags);
580 if (rcs0 & AK4114_PAR)
581 ak4114->parity_errors++;
582 if (rcs1 & AK4114_V)
583 ak4114->v_bit_errors++;
584 if (rcs1 & AK4114_CCRC)
585 ak4114->ccrc_errors++;
586 if (rcs1 & AK4114_QCRC)
587 ak4114->qcrc_errors++;
588 c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
589 (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
590 c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
591 ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
592 ak4114->rcs1 = rcs1;
593 spin_unlock_irqrestore(&ak4114->lock, _flags);
594
51354ae3 595 ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
1da177e4
LT		 596 if (ak4114->change_callback && (c0 | c1) != 0)
597 ak4114->change_callback(ak4114, c0, c1);
598
599 __rate:
600 /* compare rate */
601 res = external_rate(rcs1);
602 if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
603 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
604 if (snd_pcm_running(ak4114->capture_substream)) {
99b359ba 605 // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
1da177e4 606 snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
1da177e4
LT		 607 res = 1;
608 }
609 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
610 }
611 return res;
612}
a850ef8a 613EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
1da177e4 614
c4028958 615static void ak4114_stats(struct work_struct *work)
1da177e4 616{
c4028958 617 struct ak4114 *chip = container_of(work, struct ak4114, work.work);
1da177e4 618
4161b450 619 if (atomic_inc_return(&chip->wq_processing) == 1)
841b23d4 620 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
4161b450
TI		 621 if (atomic_dec_and_test(&chip->wq_processing))
622 schedule_delayed_work(&chip->work, HZ / 10);
1da177e4 623}
1293617c
TI		 624
625#ifdef CONFIG_PM
626void snd_ak4114_suspend(struct ak4114 *chip)
627{
628 atomic_inc(&chip->wq_processing); /* don't schedule new work */
629 cancel_delayed_work_sync(&chip->work);
630}
631EXPORT_SYMBOL(snd_ak4114_suspend);
632
633void snd_ak4114_resume(struct ak4114 *chip)
634{
635 atomic_dec(&chip->wq_processing);
636 snd_ak4114_reinit(chip);
637}
638EXPORT_SYMBOL(snd_ak4114_resume);
639#endif
Linux kernel - Deliverables
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