[mirror_ubuntu-bionic-kernel.git] / sound / i2c / other / ak4114.c

/*
 *  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(struct work_struct *work);

static void reg_write(struct ak4114 *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(struct ak4114 *ak4114, unsigned char reg)
{
	return ak4114->read(ak4114->private_data, reg);
}

#if 0
static void reg_dump(struct ak4114 *ak4114)
{
	int i;

	printk(KERN_DEBUG "AK4114 REG DUMP:\n");
	for (i = 0; i < 0x20; i++)
		printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
}
#endif

static void snd_ak4114_free(struct ak4114 *chip)
{
	chip->init = 1;	/* don't schedule new work */
	mb();
	flush_scheduled_work();
	kfree(chip);
}

static int snd_ak4114_dev_free(struct snd_device *device)
{
	struct ak4114 *chip = device->device_data;
	snd_ak4114_free(chip);
	return 0;
}

int snd_ak4114_create(struct snd_card *card,
		      ak4114_read_t *read, ak4114_write_t *write,
		      unsigned char pgm[7], unsigned char txcsb[5],
		      void *private_data, struct ak4114 **r_ak4114)
{
	struct ak4114 *chip;
	int err = 0;
	unsigned char reg;
	static struct snd_device_ops ops = {
		.dev_free =     snd_ak4114_dev_free,
	};

	chip = kzalloc(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];

	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(struct ak4114 *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(struct ak4114 *chip)
{
	unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;

	chip->init = 1;
	mb();
	flush_scheduled_work();
	/* 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_DELAYED_WORK(&chip->work, ak4114_stats);
	schedule_delayed_work(&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(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	uinfo->count = 1;
	return 0;
}

static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	uinfo->count = 1;
	return 0;
}

static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
	return 0;
}

static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
	uinfo->count = AK4114_REG_QSUB_SIZE;
	return 0;
}

static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{
	struct ak4114 *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 struct snd_kcontrol_new 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(struct ak4114, 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(struct ak4114, 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(struct ak4114, 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(struct ak4114, 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(struct ak4114 *ak4114,
		     struct snd_pcm_substream *ply_substream,
		     struct snd_pcm_substream *cap_substream)
{
	struct snd_kcontrol *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(struct ak4114 *ak4114)
{
	unsigned char rcs1;

	rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
	return external_rate(rcs1);
}

int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
{
	struct snd_pcm_runtime *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(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
			snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
			res = 1;
		}
		snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
	}
	return res;
}

static void ak4114_stats(struct work_struct *work)
{
	struct ak4114 *chip = container_of(work, struct ak4114, work.work);

	if (chip->init)
		return;
	snd_ak4114_check_rate_and_errors(chip, 0);
	schedule_delayed_work(&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);
Commit	Line	Data
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
	4	* Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
	24	#include <linux/slab.h>
	25	#include <linux/delay.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
	32	MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
	33	MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
	34	MODULE_LICENSE("GPL");
	35
	36	#define AK4114_ADDR 0x00 /* fixed address */
	37
c4028958	38	static void ak4114_stats(struct work_struct *work);
1da177e4	39
97f02e05	40	static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
1da177e4 LT	41	{
	42	ak4114->write(ak4114->private_data, reg, val);
	43	if (reg <= AK4114_REG_INT1_MASK)
	44	ak4114->regmap[reg] = val;
	45	else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4)
	46	ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val;
	47	}
	48
97f02e05	49	static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
1da177e4 LT	50	{
	51	return ak4114->read(ak4114->private_data, reg);
	52	}
	53
	54	#if 0
97f02e05	55	static void reg_dump(struct ak4114 *ak4114)
1da177e4 LT	56	{
	57	int i;
	58
99b359ba	59	printk(KERN_DEBUG "AK4114 REG DUMP:\n");
1da177e4	60	for (i = 0; i < 0x20; i++)
99b359ba	61	printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
1da177e4 LT	62	}
	63	#endif
	64
97f02e05	65	static void snd_ak4114_free(struct ak4114 *chip)
1da177e4 LT	66	{
	67	chip->init = 1; /* don't schedule new work */
	68	mb();
4014c38b	69	flush_scheduled_work();
1da177e4 LT	70	kfree(chip);
	71	}
	72
97f02e05	73	static int snd_ak4114_dev_free(struct snd_device *device)
1da177e4	74	{
97f02e05	75	struct ak4114 *chip = device->device_data;
1da177e4 LT	76	snd_ak4114_free(chip);
	77	return 0;
	78	}
	79
97f02e05	80	int snd_ak4114_create(struct snd_card *card,
1da177e4 LT	81	ak4114_read_t read, ak4114_write_t write,
1da177e4 LT	82	unsigned char pgm[7], unsigned char txcsb[5],
97f02e05	83	void private_data, struct ak4114 *r_ak4114)
1da177e4	84	{
97f02e05	85	struct ak4114 *chip;
1da177e4 LT	86	int err = 0;
1da177e4 LT	87	unsigned char reg;
97f02e05	88	static struct snd_device_ops ops = {
1da177e4 LT	89	.dev_free = snd_ak4114_dev_free,
	90	};
	91
561b220a	92	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1da177e4 LT	93	if (chip == NULL)
	94	return -ENOMEM;
	95	spin_lock_init(&chip->lock);
	96	chip->card = card;
	97	chip->read = read;
	98	chip->write = write;
	99	chip->private_data = private_data;
	100
	101	for (reg = 0; reg < 7; reg++)
	102	chip->regmap[reg] = pgm[reg];
	103	for (reg = 0; reg < 5; reg++)
	104	chip->txcsb[reg] = txcsb[reg];
	105
1da177e4 LT	106	snd_ak4114_reinit(chip);
	107
	108	chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT \| AK4114_CINT);
	109	chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
	110
	111	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
	112	goto __fail;
	113
	114	if (r_ak4114)
	115	*r_ak4114 = chip;
	116	return 0;
	117
	118	__fail:
	119	snd_ak4114_free(chip);
	120	return err < 0 ? err : -EIO;
	121	}
	122
97f02e05	123	void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
1da177e4 LT	124	{
	125	if (reg <= AK4114_REG_INT1_MASK)
	126	reg_write(chip, reg, (chip->regmap[reg] & ~mask) \| val);
	127	else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
	128	reg_write(chip, reg, (chip->txcsb[reg] & ~mask) \| val);
	129	}
	130
97f02e05	131	void snd_ak4114_reinit(struct ak4114 *chip)
1da177e4 LT	132	{
	133	unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
	134
	135	chip->init = 1;
	136	mb();
4014c38b	137	flush_scheduled_work();
1da177e4 LT	138	/* bring the chip to reset state and powerdown state */
	139	reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST\|AK4114_PWN));
	140	udelay(200);
	141	/* release reset, but leave powerdown */
	142	reg_write(chip, AK4114_REG_PWRDN, (old \| AK4114_RST) & ~AK4114_PWN);
	143	udelay(200);
	144	for (reg = 1; reg < 7; reg++)
	145	reg_write(chip, reg, chip->regmap[reg]);
	146	for (reg = 0; reg < 5; reg++)
	147	reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
	148	/* release powerdown, everything is initialized now */
	149	reg_write(chip, AK4114_REG_PWRDN, old \| AK4114_RST \| AK4114_PWN);
	150	/* bring up statistics / event queing */
	151	chip->init = 0;
c4028958	152	INIT_DELAYED_WORK(&chip->work, ak4114_stats);
4014c38b	153	schedule_delayed_work(&chip->work, HZ / 10);
1da177e4 LT	154	}
	155
	156	static unsigned int external_rate(unsigned char rcs1)
	157	{
	158	switch (rcs1 & (AK4114_FS0\|AK4114_FS1\|AK4114_FS2\|AK4114_FS3)) {
	159	case AK4114_FS_32000HZ: return 32000;
	160	case AK4114_FS_44100HZ: return 44100;
	161	case AK4114_FS_48000HZ: return 48000;
	162	case AK4114_FS_88200HZ: return 88200;
	163	case AK4114_FS_96000HZ: return 96000;
	164	case AK4114_FS_176400HZ: return 176400;
	165	case AK4114_FS_192000HZ: return 192000;
	166	default: return 0;
	167	}
	168	}
	169
97f02e05 TI	170	static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
97f02e05 TI	171	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	172	{
	173	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	174	uinfo->count = 1;
	175	uinfo->value.integer.min = 0;
	176	uinfo->value.integer.max = LONG_MAX;
	177	return 0;
	178	}
	179
97f02e05 TI	180	static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	181	struct snd_ctl_elem_value *ucontrol)
1da177e4	182	{
97f02e05	183	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	184	long *ptr;
	185
	186	spin_lock_irq(&chip->lock);
	187	ptr = (long )(((char )chip) + kcontrol->private_value);
	188	ucontrol->value.integer.value[0] = *ptr;
	189	*ptr = 0;
	190	spin_unlock_irq(&chip->lock);
	191	return 0;
	192	}
	193
97f02e05 TI	194	static int snd_ak4114_in_bit_info(struct snd_kcontrol *kcontrol,
97f02e05 TI	195	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	196	{
	197	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	198	uinfo->count = 1;
	199	uinfo->value.integer.min = 0;
	200	uinfo->value.integer.max = 1;
	201	return 0;
	202	}
	203
97f02e05 TI	204	static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	205	struct snd_ctl_elem_value *ucontrol)
1da177e4	206	{
97f02e05	207	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	208	unsigned char reg = kcontrol->private_value & 0xff;
	209	unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
	210	unsigned char inv = (kcontrol->private_value >> 31) & 1;
	211
	212	ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
	213	return 0;
	214	}
	215
97f02e05 TI	216	static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
97f02e05 TI	217	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	218	{
	219	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	220	uinfo->count = 1;
	221	uinfo->value.integer.min = 0;
	222	uinfo->value.integer.max = 192000;
	223	return 0;
	224	}
	225
97f02e05 TI	226	static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	227	struct snd_ctl_elem_value *ucontrol)
1da177e4	228	{
97f02e05	229	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	230
	231	ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
	232	return 0;
	233	}
	234
97f02e05	235	static int snd_ak4114_spdif_info(struct snd_kcontrol kcontrol, struct snd_ctl_elem_info uinfo)
1da177e4 LT	236	{
	237	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	238	uinfo->count = 1;
	239	return 0;
	240	}
	241
97f02e05 TI	242	static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	243	struct snd_ctl_elem_value *ucontrol)
1da177e4	244	{
97f02e05	245	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	246	unsigned i;
	247
	248	for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
	249	ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
	250	return 0;
	251	}
	252
97f02e05 TI	253	static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	254	struct snd_ctl_elem_value *ucontrol)
1da177e4	255	{
97f02e05	256	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	257	unsigned i;
	258
	259	for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
	260	ucontrol->value.iec958.status[i] = chip->txcsb[i];
	261	return 0;
	262	}
	263
97f02e05 TI	264	static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
97f02e05 TI	265	struct snd_ctl_elem_value *ucontrol)
1da177e4	266	{
97f02e05	267	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	268	unsigned i;
	269
	270	for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
	271	reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
	272	return 0;
	273	}
	274
97f02e05	275	static int snd_ak4114_spdif_mask_info(struct snd_kcontrol kcontrol, struct snd_ctl_elem_info uinfo)
1da177e4 LT	276	{
	277	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	278	uinfo->count = 1;
	279	return 0;
	280	}
	281
97f02e05 TI	282	static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
97f02e05 TI	283	struct snd_ctl_elem_value *ucontrol)
1da177e4 LT	284	{
	285	memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
	286	return 0;
	287	}
	288
97f02e05	289	static int snd_ak4114_spdif_pinfo(struct snd_kcontrol kcontrol, struct snd_ctl_elem_info uinfo)
1da177e4 LT	290	{
	291	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	292	uinfo->value.integer.min = 0;
	293	uinfo->value.integer.max = 0xffff;
	294	uinfo->count = 4;
	295	return 0;
	296	}
	297
97f02e05 TI	298	static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
97f02e05 TI	299	struct snd_ctl_elem_value *ucontrol)
1da177e4	300	{
97f02e05	301	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	302	unsigned short tmp;
	303
	304	ucontrol->value.integer.value[0] = 0xf8f2;
	305	ucontrol->value.integer.value[1] = 0x4e1f;
	306	tmp = reg_read(chip, AK4114_REG_Pc0) \| (reg_read(chip, AK4114_REG_Pc1) << 8);
	307	ucontrol->value.integer.value[2] = tmp;
	308	tmp = reg_read(chip, AK4114_REG_Pd0) \| (reg_read(chip, AK4114_REG_Pd1) << 8);
	309	ucontrol->value.integer.value[3] = tmp;
	310	return 0;
	311	}
	312
97f02e05	313	static int snd_ak4114_spdif_qinfo(struct snd_kcontrol kcontrol, struct snd_ctl_elem_info uinfo)
1da177e4 LT	314	{
	315	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
	316	uinfo->count = AK4114_REG_QSUB_SIZE;
	317	return 0;
	318	}
	319
97f02e05 TI	320	static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
97f02e05 TI	321	struct snd_ctl_elem_value *ucontrol)
1da177e4	322	{
97f02e05	323	struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
1da177e4 LT	324	unsigned i;
	325
	326	for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
	327	ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
	328	return 0;
	329	}
	330
	331	/* Don't forget to change AK4114_CONTROLS define!!! */
97f02e05	332	static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
1da177e4 LT	333	{
	334	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	335	.name = "IEC958 Parity Errors",
	336	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	337	.info = snd_ak4114_in_error_info,
	338	.get = snd_ak4114_in_error_get,
97f02e05	339	.private_value = offsetof(struct ak4114, parity_errors),
1da177e4 LT	340	},
	341	{
	342	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	343	.name = "IEC958 V-Bit Errors",
	344	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	345	.info = snd_ak4114_in_error_info,
	346	.get = snd_ak4114_in_error_get,
97f02e05	347	.private_value = offsetof(struct ak4114, v_bit_errors),
1da177e4 LT	348	},
	349	{
	350	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	351	.name = "IEC958 C-CRC Errors",
	352	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	353	.info = snd_ak4114_in_error_info,
	354	.get = snd_ak4114_in_error_get,
97f02e05	355	.private_value = offsetof(struct ak4114, ccrc_errors),
1da177e4 LT	356	},
	357	{
	358	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	359	.name = "IEC958 Q-CRC Errors",
	360	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	361	.info = snd_ak4114_in_error_info,
	362	.get = snd_ak4114_in_error_get,
97f02e05	363	.private_value = offsetof(struct ak4114, qcrc_errors),
1da177e4 LT	364	},
	365	{
	366	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	367	.name = "IEC958 External Rate",
	368	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	369	.info = snd_ak4114_rate_info,
	370	.get = snd_ak4114_rate_get,
	371	},
	372	{
	373	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	374	.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
	375	.access = SNDRV_CTL_ELEM_ACCESS_READ,
	376	.info = snd_ak4114_spdif_mask_info,
	377	.get = snd_ak4114_spdif_mask_get,
	378	},
	379	{
	380	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	381	.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
	382	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	383	.info = snd_ak4114_spdif_info,
	384	.get = snd_ak4114_spdif_playback_get,
	385	.put = snd_ak4114_spdif_playback_put,
	386	},
	387	{
	388	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	389	.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
	390	.access = SNDRV_CTL_ELEM_ACCESS_READ,
	391	.info = snd_ak4114_spdif_mask_info,
	392	.get = snd_ak4114_spdif_mask_get,
	393	},
	394	{
	395	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	396	.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
	397	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	398	.info = snd_ak4114_spdif_info,
	399	.get = snd_ak4114_spdif_get,
	400	},
	401	{
	402	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	403	.name = "IEC958 Preample Capture Default",
	404	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	405	.info = snd_ak4114_spdif_pinfo,
	406	.get = snd_ak4114_spdif_pget,
	407	},
	408	{
	409	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	410	.name = "IEC958 Q-subcode Capture Default",
	411	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	412	.info = snd_ak4114_spdif_qinfo,
	413	.get = snd_ak4114_spdif_qget,
	414	},
	415	{
	416	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	417	.name = "IEC958 Audio",
	418	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	419	.info = snd_ak4114_in_bit_info,
	420	.get = snd_ak4114_in_bit_get,
	421	.private_value = (1<<31) \| (1<<8) \| AK4114_REG_RCS0,
	422	},
	423	{
	424	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	425	.name = "IEC958 Non-PCM Bitstream",
	426	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	427	.info = snd_ak4114_in_bit_info,
428	.get = snd_ak4114_in_bit_get,
429	.private_value = (6<<8) \| AK4114_REG_RCS1,
430	},
431	{
432	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
433	.name = "IEC958 DTS Bitstream",
434	.access = SNDRV_CTL_ELEM_ACCESS_READ \| SNDRV_CTL_ELEM_ACCESS_VOLATILE,
435	.info = snd_ak4114_in_bit_info,
436	.get = snd_ak4114_in_bit_get,
437	.private_value = (3<<8) \| AK4114_REG_RCS1,
438	}
439	};
440
97f02e05 TI	441	int snd_ak4114_build(struct ak4114 *ak4114,
	442	struct snd_pcm_substream *ply_substream,
	443	struct snd_pcm_substream *cap_substream)
1da177e4	444	{
97f02e05	445	struct snd_kcontrol *kctl;
1da177e4 LT	446	unsigned int idx;
	447	int err;
	448
	449	snd_assert(cap_substream, return -EINVAL);
	450	ak4114->playback_substream = ply_substream;
	451	ak4114->capture_substream = cap_substream;
	452	for (idx = 0; idx < AK4114_CONTROLS; idx++) {
	453	kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
	454	if (kctl == NULL)
	455	return -ENOMEM;
	456	if (!strstr(kctl->id.name, "Playback")) {
	457	if (ply_substream == NULL) {
	458	snd_ctl_free_one(kctl);
	459	ak4114->kctls[idx] = NULL;
	460	continue;
	461	}
	462	kctl->id.device = ply_substream->pcm->device;
	463	kctl->id.subdevice = ply_substream->number;
	464	} else {
	465	kctl->id.device = cap_substream->pcm->device;
	466	kctl->id.subdevice = cap_substream->number;
	467	}
	468	err = snd_ctl_add(ak4114->card, kctl);
	469	if (err < 0)
	470	return err;
	471	ak4114->kctls[idx] = kctl;
	472	}
	473	return 0;
	474	}
	475
97f02e05	476	int snd_ak4114_external_rate(struct ak4114 *ak4114)
1da177e4 LT	477	{
	478	unsigned char rcs1;
	479
	480	rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
	481	return external_rate(rcs1);
	482	}
	483
97f02e05	484	int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
1da177e4	485	{
97f02e05	486	struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
1da177e4 LT	487	unsigned long _flags;
	488	int res = 0;
	489	unsigned char rcs0, rcs1;
	490	unsigned char c0, c1;
	491
	492	rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
	493	if (flags & AK4114_CHECK_NO_STAT)
	494	goto __rate;
	495	rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
	496	spin_lock_irqsave(&ak4114->lock, _flags);
	497	if (rcs0 & AK4114_PAR)
	498	ak4114->parity_errors++;
	499	if (rcs1 & AK4114_V)
	500	ak4114->v_bit_errors++;
	501	if (rcs1 & AK4114_CCRC)
	502	ak4114->ccrc_errors++;
	503	if (rcs1 & AK4114_QCRC)
	504	ak4114->qcrc_errors++;
	505	c0 = (ak4114->rcs0 & (AK4114_QINT \| AK4114_CINT \| AK4114_PEM \| AK4114_AUDION \| AK4114_AUTO \| AK4114_UNLCK)) ^
	506	(rcs0 & (AK4114_QINT \| AK4114_CINT \| AK4114_PEM \| AK4114_AUDION \| AK4114_AUTO \| AK4114_UNLCK));
	507	c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
	508	ak4114->rcs0 = rcs0 & ~(AK4114_QINT \| AK4114_CINT);
	509	ak4114->rcs1 = rcs1;
	510	spin_unlock_irqrestore(&ak4114->lock, _flags);
	511
	512	if (rcs0 & AK4114_PAR)
	513	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[0]->id);
	514	if (rcs0 & AK4114_V)
	515	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[1]->id);
	516	if (rcs1 & AK4114_CCRC)
	517	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[2]->id);
	518	if (rcs1 & AK4114_QCRC)
	519	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[3]->id);
	520
	521	/* rate change */
	522	if (c1 & 0xf0)
	523	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[4]->id);
	524
	525	if ((c0 & AK4114_PEM) \| (c0 & AK4114_CINT))
	526	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[9]->id);
	527	if (c0 & AK4114_QINT)
	528	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[10]->id);
	529
	530	if (c0 & AK4114_AUDION)
	531	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[11]->id);
	532	if (c0 & AK4114_AUTO)
	533	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[12]->id);
	534	if (c0 & AK4114_DTSCD)
	535	snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[13]->id);
	536
	537	if (ak4114->change_callback && (c0 \| c1) != 0)
	538	ak4114->change_callback(ak4114, c0, c1);
	539
	540	__rate:
	541	/* compare rate */
	542	res = external_rate(rcs1);
	543	if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
	544	snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
	545	if (snd_pcm_running(ak4114->capture_substream)) {
99b359ba	546	// printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
1da177e4	547	snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
1da177e4 LT	548	res = 1;
	549	}
	550	snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
	551	}
	552	return res;
	553	}
	554
c4028958	555	static void ak4114_stats(struct work_struct *work)
1da177e4	556	{
c4028958	557	struct ak4114 *chip = container_of(work, struct ak4114, work.work);
1da177e4 LT	558
	559	if (chip->init)
	560	return;
	561	snd_ak4114_check_rate_and_errors(chip, 0);
4014c38b	562	schedule_delayed_work(&chip->work, HZ / 10);
1da177e4 LT	563	}
	564
	565	EXPORT_SYMBOL(snd_ak4114_create);
	566	EXPORT_SYMBOL(snd_ak4114_reg_write);
	567	EXPORT_SYMBOL(snd_ak4114_reinit);
	568	EXPORT_SYMBOL(snd_ak4114_build);
	569	EXPORT_SYMBOL(snd_ak4114_external_rate);
	570	EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);