1 files changed, 580 insertions, 0 deletions

diff --git a/sound/i2c/other/ak4114.c b/sound/i2c/other/ak4114.c
new file mode 100644
index 0000000..f5e6018
--- /dev/null
+++ b/sound/i2c/other/ak4114.c
@@ -0,0 +1,580 @@
+/*
+ *  Routines for control of the AK4114 via I2C and 4-wire serial interface
+ *  IEC958 (S/PDIF) receiver by Asahi Kasei
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/ak4114.h>
+#include <sound/asoundef.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
+MODULE_LICENSE("GPL");
+
+#define AK4114_ADDR			0x00 /* fixed address */
+
+static void ak4114_stats(void *);
+
+static void reg_write(ak4114_t *ak4114, unsigned char reg, unsigned char val)
+{
+	ak4114->write(ak4114->private_data, reg, val);
+	if (reg <= AK4114_REG_INT1_MASK)
+		ak4114->regmap[reg] = val;
+	else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4)
+		ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val;
+}
+
+static inline unsigned char reg_read(ak4114_t *ak4114, unsigned char reg)
+{
+	return ak4114->read(ak4114->private_data, reg);
+}
+
+#if 0
+static void reg_dump(ak4114_t *ak4114)
+{
+	int i;
+
+	printk("AK4114 REG DUMP:\n");
+	for (i = 0; i < 0x20; i++)
+		printk("reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
+}
+#endif
+
+static void snd_ak4114_free(ak4114_t *chip)
+{
+	chip->init = 1;	/* don't schedule new work */
+	mb();
+	if (chip->workqueue != NULL) {
+		flush_workqueue(chip->workqueue);
+		destroy_workqueue(chip->workqueue);
+	}
+	kfree(chip);
+}
+
+static int snd_ak4114_dev_free(snd_device_t *device)
+{
+	ak4114_t *chip = device->device_data;
+	snd_ak4114_free(chip);
+	return 0;
+}
+
+int snd_ak4114_create(snd_card_t *card,
+		      ak4114_read_t *read, ak4114_write_t *write,
+		      unsigned char pgm[7], unsigned char txcsb[5],
+		      void *private_data, ak4114_t **r_ak4114)
+{
+	ak4114_t *chip;
+	int err = 0;
+	unsigned char reg;
+	static snd_device_ops_t ops = {
+		.dev_free =     snd_ak4114_dev_free,
+	};
+
+	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+	spin_lock_init(&chip->lock);
+	chip->card = card;
+	chip->read = read;
+	chip->write = write;
+	chip->private_data = private_data;
+
+	for (reg = 0; reg < 7; reg++)
+		chip->regmap[reg] = pgm[reg];
+	for (reg = 0; reg < 5; reg++)
+		chip->txcsb[reg] = txcsb[reg];
+
+	chip->workqueue = create_workqueue("snd-ak4114");
+	if (chip->workqueue == NULL) {
+		kfree(chip);
+		return -ENOMEM;
+	}
+
+	snd_ak4114_reinit(chip);
+
+	chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
+	chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
+
+	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
+		goto __fail;
+
+	if (r_ak4114)
+		*r_ak4114 = chip;
+	return 0;
+
+      __fail:
+	snd_ak4114_free(chip);
+	return err < 0 ? err : -EIO;
+}
+
+void snd_ak4114_reg_write(ak4114_t *chip, unsigned char reg, unsigned char mask, unsigned char val)
+{
+	if (reg <= AK4114_REG_INT1_MASK)
+		reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
+	else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
+		reg_write(chip, reg, (chip->txcsb[reg] & ~mask) | val);
+}
+
+void snd_ak4114_reinit(ak4114_t *chip)
+{
+	unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
+
+	chip->init = 1;
+	mb();
+	flush_workqueue(chip->workqueue);
+	/* bring the chip to reset state and powerdown state */
+	reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
+	udelay(200);
+	/* release reset, but leave powerdown */
+	reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
+	udelay(200);
+	for (reg = 1; reg < 7; reg++)
+		reg_write(chip, reg, chip->regmap[reg]);
+	for (reg = 0; reg < 5; reg++)
+		reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
+	/* release powerdown, everything is initialized now */
+	reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
+	/* bring up statistics / event queing */
+	chip->init = 0;
+	INIT_WORK(&chip->work, ak4114_stats, chip);
+	queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
+}
+
+static unsigned int external_rate(unsigned char rcs1)
+{
+	switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
+	case AK4114_FS_32000HZ: return 32000;
+	case AK4114_FS_44100HZ: return 44100;
+	case AK4114_FS_48000HZ: return 48000;
+	case AK4114_FS_88200HZ: return 88200;
+	case AK4114_FS_96000HZ: return 96000;
+	case AK4114_FS_176400HZ: return 176400;
+	case AK4114_FS_192000HZ: return 192000;
+	default:		return 0;
+	}
+}
+
+static int snd_ak4114_in_error_info(snd_kcontrol_t *kcontrol,
+				    snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = LONG_MAX;
+	return 0;
+}
+
+static int snd_ak4114_in_error_get(snd_kcontrol_t *kcontrol,
+				   snd_ctl_elem_value_t *ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	long *ptr;
+
+	spin_lock_irq(&chip->lock);
+	ptr = (long *)(((char *)chip) + kcontrol->private_value);
+	ucontrol->value.integer.value[0] = *ptr;
+	*ptr = 0;
+	spin_unlock_irq(&chip->lock);
+	return 0;
+}
+
+static int snd_ak4114_in_bit_info(snd_kcontrol_t *kcontrol,
+				  snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int snd_ak4114_in_bit_get(snd_kcontrol_t *kcontrol,
+				 snd_ctl_elem_value_t *ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned char reg = kcontrol->private_value & 0xff;
+	unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
+	unsigned char inv = (kcontrol->private_value >> 31) & 1;
+
+	ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
+	return 0;
+}
+
+static int snd_ak4114_rate_info(snd_kcontrol_t *kcontrol,
+				snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 192000;
+	return 0;
+}
+
+static int snd_ak4114_rate_get(snd_kcontrol_t *kcontrol,
+			       snd_ctl_elem_value_t *ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+
+	ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
+	return 0;
+}
+
+static int snd_ak4114_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_ak4114_spdif_get(snd_kcontrol_t * kcontrol,
+				snd_ctl_elem_value_t * ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned i;
+
+	for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
+		ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
+	return 0;
+}
+
+static int snd_ak4114_spdif_playback_get(snd_kcontrol_t * kcontrol,
+					 snd_ctl_elem_value_t * ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned i;
+
+	for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
+		ucontrol->value.iec958.status[i] = chip->txcsb[i];
+	return 0;
+}
+
+static int snd_ak4114_spdif_playback_put(snd_kcontrol_t * kcontrol,
+					 snd_ctl_elem_value_t * ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned i;
+
+	for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
+		reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
+	return 0;
+}
+
+static int snd_ak4114_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_ak4114_spdif_mask_get(snd_kcontrol_t * kcontrol,
+				      snd_ctl_elem_value_t * ucontrol)
+{
+	memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
+	return 0;
+}
+
+static int snd_ak4114_spdif_pinfo(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 0xffff;
+	uinfo->count = 4;
+	return 0;
+}
+
+static int snd_ak4114_spdif_pget(snd_kcontrol_t * kcontrol,
+				 snd_ctl_elem_value_t * ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned short tmp;
+
+	ucontrol->value.integer.value[0] = 0xf8f2;
+	ucontrol->value.integer.value[1] = 0x4e1f;
+	tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
+	ucontrol->value.integer.value[2] = tmp;
+	tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
+	ucontrol->value.integer.value[3] = tmp;
+	return 0;
+}
+
+static int snd_ak4114_spdif_qinfo(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+	uinfo->count = AK4114_REG_QSUB_SIZE;
+	return 0;
+}
+
+static int snd_ak4114_spdif_qget(snd_kcontrol_t * kcontrol,
+				 snd_ctl_elem_value_t * ucontrol)
+{
+	ak4114_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned i;
+
+	for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
+		ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
+	return 0;
+}
+
+/* Don't forget to change AK4114_CONTROLS define!!! */
+static snd_kcontrol_new_t snd_ak4114_iec958_controls[] = {
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Parity Errors",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_error_info,
+	.get =		snd_ak4114_in_error_get,
+	.private_value = offsetof(ak4114_t, parity_errors),
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 V-Bit Errors",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_error_info,
+	.get =		snd_ak4114_in_error_get,
+	.private_value = offsetof(ak4114_t, v_bit_errors),
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 C-CRC Errors",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_error_info,
+	.get =		snd_ak4114_in_error_get,
+	.private_value = offsetof(ak4114_t, ccrc_errors),
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Q-CRC Errors",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_error_info,
+	.get =		snd_ak4114_in_error_get,
+	.private_value = offsetof(ak4114_t, qcrc_errors),
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 External Rate",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_rate_info,
+	.get =		snd_ak4114_rate_get,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.info =		snd_ak4114_spdif_mask_info,
+	.get =		snd_ak4114_spdif_mask_get,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_spdif_info,
+	.get =		snd_ak4114_spdif_playback_get,
+	.put =		snd_ak4114_spdif_playback_put,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.info =		snd_ak4114_spdif_mask_info,
+	.get =		snd_ak4114_spdif_mask_get,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_spdif_info,
+	.get =		snd_ak4114_spdif_get,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Preample Capture Default",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_spdif_pinfo,
+	.get =		snd_ak4114_spdif_pget,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Q-subcode Capture Default",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_spdif_qinfo,
+	.get =		snd_ak4114_spdif_qget,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Audio",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_bit_info,
+	.get =		snd_ak4114_in_bit_get,
+	.private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 Non-PCM Bitstream",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_bit_info,
+	.get =		snd_ak4114_in_bit_get,
+	.private_value = (6<<8) | AK4114_REG_RCS1,
+},
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		"IEC958 DTS Bitstream",
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+	.info =		snd_ak4114_in_bit_info,
+	.get =		snd_ak4114_in_bit_get,
+	.private_value = (3<<8) | AK4114_REG_RCS1,
+}
+};
+
+int snd_ak4114_build(ak4114_t *ak4114,
+		     snd_pcm_substream_t *ply_substream,
+		     snd_pcm_substream_t *cap_substream)
+{
+	snd_kcontrol_t *kctl;
+	unsigned int idx;
+	int err;
+
+	snd_assert(cap_substream, return -EINVAL);
+	ak4114->playback_substream = ply_substream;
+	ak4114->capture_substream = cap_substream;
+	for (idx = 0; idx < AK4114_CONTROLS; idx++) {
+		kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
+		if (kctl == NULL)
+			return -ENOMEM;
+		if (!strstr(kctl->id.name, "Playback")) {
+			if (ply_substream == NULL) {
+				snd_ctl_free_one(kctl);
+				ak4114->kctls[idx] = NULL;
+				continue;
+			}
+			kctl->id.device = ply_substream->pcm->device;
+			kctl->id.subdevice = ply_substream->number;
+		} else {
+			kctl->id.device = cap_substream->pcm->device;
+			kctl->id.subdevice = cap_substream->number;
+		}
+		err = snd_ctl_add(ak4114->card, kctl);
+		if (err < 0)
+			return err;
+		ak4114->kctls[idx] = kctl;
+	}
+	return 0;
+}
+
+int snd_ak4114_external_rate(ak4114_t *ak4114)
+{
+	unsigned char rcs1;
+
+	rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
+	return external_rate(rcs1);
+}
+
+int snd_ak4114_check_rate_and_errors(ak4114_t *ak4114, unsigned int flags)
+{
+	snd_pcm_runtime_t *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
+	unsigned long _flags;
+	int res = 0;
+	unsigned char rcs0, rcs1;
+	unsigned char c0, c1;
+
+	rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
+	if (flags & AK4114_CHECK_NO_STAT)
+		goto __rate;
+	rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
+	spin_lock_irqsave(&ak4114->lock, _flags);
+	if (rcs0 & AK4114_PAR)
+		ak4114->parity_errors++;
+	if (rcs1 & AK4114_V)
+		ak4114->v_bit_errors++;
+	if (rcs1 & AK4114_CCRC)
+		ak4114->ccrc_errors++;
+	if (rcs1 & AK4114_QCRC)
+		ak4114->qcrc_errors++;
+	c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
+                     (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
+	c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
+	ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
+	ak4114->rcs1 = rcs1;
+	spin_unlock_irqrestore(&ak4114->lock, _flags);
+
+	if (rcs0 & AK4114_PAR)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[0]->id);
+	if (rcs0 & AK4114_V)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[1]->id);
+	if (rcs1 & AK4114_CCRC)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[2]->id);
+	if (rcs1 & AK4114_QCRC)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[3]->id);
+
+	/* rate change */
+	if (c1 & 0xf0)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[4]->id);
+
+	if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[9]->id);
+	if (c0 & AK4114_QINT)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[10]->id);
+
+	if (c0 & AK4114_AUDION)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[11]->id);
+	if (c0 & AK4114_AUTO)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[12]->id);
+	if (c0 & AK4114_DTSCD)
+		snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[13]->id);
+
+	if (ak4114->change_callback && (c0 | c1) != 0)
+		ak4114->change_callback(ak4114, c0, c1);
+
+      __rate:
+	/* compare rate */
+	res = external_rate(rcs1);
+	if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
+		snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
+		if (snd_pcm_running(ak4114->capture_substream)) {
+			// printk("rate changed (%i <- %i)\n", runtime->rate, res);
+			snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
+			wake_up(&runtime->sleep);
+			res = 1;
+		}
+		snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
+	}
+	return res;
+}
+
+static void ak4114_stats(void *data)
+{
+	ak4114_t *chip = (ak4114_t *)data;
+
+	if (chip->init)
+		return;
+	snd_ak4114_check_rate_and_errors(chip, 0);
+	queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
+}
+
+EXPORT_SYMBOL(snd_ak4114_create);
+EXPORT_SYMBOL(snd_ak4114_reg_write);
+EXPORT_SYMBOL(snd_ak4114_reinit);
+EXPORT_SYMBOL(snd_ak4114_build);
+EXPORT_SYMBOL(snd_ak4114_external_rate);
+EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);