Update of /cvsroot/alsa/alsa-kernel/i2c/other
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12780

Modified Files:
        Makefile 
Added Files:
        ak4117.c 
Log Message:
Moved AK4117 from alsa-driver tree to satisfy dependency for PDAudioCF driver

--- NEW FILE: ak4117.c ---
/*
 *  Routines for control of the AK4117 via 4-wire serial interface
 *  IEC958 (S/PDIF) receiver by Asahi Kasei
 *  Copyright (c) by Jaroslav Kysela <[EMAIL PROTECTED]>
 *
 *
 *   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 "ak4117.h"
#include <sound/asoundef.h>

MODULE_AUTHOR("Jaroslav Kysela <[EMAIL PROTECTED]>");
MODULE_DESCRIPTION("AK4117 IEC958 (S/PDIF) receiver by Asahi Kasei");
MODULE_LICENSE("GPL");

#define chip_t ak4117_t

#define AK4117_ADDR                     0x00 /* fixed address */

static void snd_ak4117_timer(unsigned long data);

static void reg_write(ak4117_t *ak4117, unsigned char reg, unsigned char val)
{
        ak4117->write(ak4117->private_data, reg, val);
        if (reg < sizeof(ak4117->regmap))
                ak4117->regmap[reg] = val;
}

static inline unsigned char reg_read(ak4117_t *ak4117, unsigned char reg)
{
        return ak4117->read(ak4117->private_data, reg);
}

#if 0
static void reg_dump(ak4117_t *ak4117)
{
        int i;

        printk("AK4117 REG DUMP:\n");
        for (i = 0; i < 0x1b; i++)
                printk("reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < 
sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
}
#endif

static void snd_ak4117_free(ak4117_t *chip)
{
        del_timer(&chip->timer);
        snd_magic_kfree(chip);
}

static int snd_ak4117_dev_free(snd_device_t *device)
{
        ak4117_t *chip = snd_magic_cast(ak4117_t, device->device_data, return -ENXIO);
        snd_ak4117_free(chip);
        return 0;
}

int snd_ak4117_create(snd_card_t *card, ak4117_read_t *read, ak4117_write_t *write,
                      unsigned char pgm[5], void *private_data, ak4117_t **r_ak4117)
{
        ak4117_t *chip;
        int err = 0;
        unsigned char reg;
        static snd_device_ops_t ops = {
                .dev_free =     snd_ak4117_dev_free,
        };

        chip = (ak4117_t *)snd_magic_kcalloc(ak4117_t, 0, 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;
        init_timer(&chip->timer);
        chip->timer.data = (unsigned long)chip;
        chip->timer.function = snd_ak4117_timer;

        for (reg = 0; reg < 5; reg++)
                chip->regmap[reg] = pgm[reg];
        snd_ak4117_reinit(chip);

        chip->rcs0 = reg_read(chip, AK4117_REG_RCS0) & ~(AK4117_QINT | AK4117_CINT | 
AK4117_STC);
        chip->rcs1 = reg_read(chip, AK4117_REG_RCS1);
        chip->rcs2 = reg_read(chip, AK4117_REG_RCS2);

        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
                goto __fail;

        if (r_ak4117)
                *r_ak4117 = chip;
        return 0;

      __fail:
        snd_ak4117_free(chip);
        return err < 0 ? err : -EIO;
}

void snd_ak4117_reg_write(ak4117_t *chip, unsigned char reg, unsigned char mask, 
unsigned char val)
{
        if (reg >= 5)
                return;
        reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
}

void snd_ak4117_reinit(ak4117_t *chip)
{
        unsigned char old = chip->regmap[AK4117_REG_PWRDN], reg;

        del_timer(&chip->timer);
        chip->init = 1;
        /* bring the chip to reset state and powerdown state */
        reg_write(chip, AK4117_REG_PWRDN, 0);
        udelay(200);
        /* release reset, but leave powerdown */
        reg_write(chip, AK4117_REG_PWRDN, (old | AK4117_RST) & ~AK4117_PWN);
        udelay(200);
        for (reg = 1; reg < 5; reg++)
                reg_write(chip, reg, chip->regmap[reg]);
        /* release powerdown, everything is initialized now */
        reg_write(chip, AK4117_REG_PWRDN, old | AK4117_RST | AK4117_PWN);
        chip->init = 0;
        chip->timer.expires = 1 + jiffies;
        add_timer(&chip->timer);
}

static unsigned int external_rate(unsigned char rcs1)
{
        switch (rcs1 & (AK4117_FS0|AK4117_FS1|AK4117_FS2|AK4117_FS3)) {
        case AK4117_FS_32000HZ: return 32000;
        case AK4117_FS_44100HZ: return 44100;
        case AK4117_FS_48000HZ: return 48000;
        case AK4117_FS_88200HZ: return 88200;
        case AK4117_FS_96000HZ: return 96000;
        case AK4117_FS_176400HZ: return 176400;
        case AK4117_FS_192000HZ: return 192000;
        default:                return 0;
        }
}

static int snd_ak4117_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_ak4117_in_error_get(snd_kcontrol_t *kcontrol,
                                   snd_ctl_elem_value_t *ucontrol)
{
        ak4117_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_ak4117_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_ak4117_in_bit_get(snd_kcontrol_t *kcontrol,
                                 snd_ctl_elem_value_t *ucontrol)
{
        ak4117_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_ak4117_rx_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 = 1;
        return 0;
}

static int snd_ak4117_rx_get(snd_kcontrol_t *kcontrol,
                             snd_ctl_elem_value_t *ucontrol)
{
        ak4117_t *chip = snd_kcontrol_chip(kcontrol);

        ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) 
? 1 : 0;
        return 0;
}

static int snd_ak4117_rx_put(snd_kcontrol_t *kcontrol,
                             snd_ctl_elem_value_t *ucontrol)
{
        ak4117_t *chip = snd_kcontrol_chip(kcontrol);
        int change;
        u8 old_val;
        
        spin_lock_irq(&chip->lock);
        old_val = chip->regmap[AK4117_REG_IO];
        change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 
0);
        if (change)
                reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | 
(ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
        spin_unlock_irq(&chip->lock);
        return change;
}

static int snd_ak4117_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_ak4117_rate_get(snd_kcontrol_t *kcontrol,
                               snd_ctl_elem_value_t *ucontrol)
{
        ak4117_t *chip = snd_kcontrol_chip(kcontrol);

        ucontrol->value.integer.value[0] = external_rate(reg_read(chip, 
AK4117_REG_RCS1));
        return 0;
}

static int snd_ak4117_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_ak4117_spdif_get(snd_kcontrol_t * kcontrol,
                                snd_ctl_elem_value_t * ucontrol)
{
        ak4117_t *chip = snd_kcontrol_chip(kcontrol);
        unsigned i;

        for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
                ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + 
i);
        return 0;
}

static int snd_ak4117_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_ak4117_spdif_mask_get(snd_kcontrol_t * kcontrol,
                                      snd_ctl_elem_value_t * ucontrol)
{
        memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
        return 0;
}

static int snd_ak4117_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_ak4117_spdif_pget(snd_kcontrol_t * kcontrol,
                                 snd_ctl_elem_value_t * ucontrol)
{
        ak4117_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, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
        ucontrol->value.integer.value[2] = tmp;
        tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
        ucontrol->value.integer.value[3] = tmp;
        return 0;
}

static int snd_ak4117_spdif_qinfo(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * 
uinfo)
{
        uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
        uinfo->count = AK4117_REG_QSUB_SIZE;
        return 0;
}

static int snd_ak4117_spdif_qget(snd_kcontrol_t * kcontrol,
                                 snd_ctl_elem_value_t * ucontrol)
{
        ak4117_t *chip = snd_kcontrol_chip(kcontrol);
        unsigned i;

        for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
                ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + 
i);
        return 0;
}

/* Don't forget to change AK4117_CONTROLS define!!! */
static snd_kcontrol_new_t snd_ak4117_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_ak4117_in_error_info,
        .get =          snd_ak4117_in_error_get,
        .private_value = offsetof(ak4117_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_ak4117_in_error_info,
        .get =          snd_ak4117_in_error_get,
        .private_value = offsetof(ak4117_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_ak4117_in_error_info,
        .get =          snd_ak4117_in_error_get,
        .private_value = offsetof(ak4117_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_ak4117_in_error_info,
        .get =          snd_ak4117_in_error_get,
        .private_value = offsetof(ak4117_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_ak4117_rate_info,
        .get =          snd_ak4117_rate_get,
},
{
        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
        .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
        .info =         snd_ak4117_spdif_mask_info,
        .get =          snd_ak4117_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_ak4117_spdif_info,
        .get =          snd_ak4117_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_ak4117_spdif_pinfo,
        .get =          snd_ak4117_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_ak4117_spdif_qinfo,
        .get =          snd_ak4117_spdif_qget,
},
{
        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
        .name =         "IEC958 Audio",
        .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
        .info =         snd_ak4117_in_bit_info,
        .get =          snd_ak4117_in_bit_get,
        .private_value = (1<<31) | (3<<8) | AK4117_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_ak4117_in_bit_info,
        .get =          snd_ak4117_in_bit_get,
        .private_value = (5<<8) | AK4117_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_ak4117_in_bit_info,
        .get =          snd_ak4117_in_bit_get,
        .private_value = (6<<8) | AK4117_REG_RCS1,
},
{
        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
        .name =         "AK4117 Input Select",
        .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
        .info =         snd_ak4117_rx_info,
        .get =          snd_ak4117_rx_get,
        .put =          snd_ak4117_rx_put,
}
};

int snd_ak4117_build(ak4117_t *ak4117, snd_pcm_substream_t *cap_substream)
{
        snd_kcontrol_t *kctl;
        unsigned int idx;
        int err;

        snd_assert(cap_substream, return -EINVAL);
        ak4117->substream = cap_substream;
        for (idx = 0; idx < AK4117_CONTROLS; idx++) {
                kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
                if (kctl == NULL)
                        return -ENOMEM;
                kctl->id.device = cap_substream->pcm->device;
                kctl->id.subdevice = cap_substream->number;
                err = snd_ctl_add(ak4117->card, kctl);
                if (err < 0)
                        return err;
                ak4117->kctls[idx] = kctl;
        }
        return 0;
}

int snd_ak4117_external_rate(ak4117_t *ak4117)
{
        unsigned char rcs1;

        rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
        return external_rate(rcs1);
}

int snd_ak4117_check_rate_and_errors(ak4117_t *ak4117, unsigned int flags)
{
        snd_pcm_runtime_t *runtime = ak4117->substream ? ak4117->substream->runtime : 
NULL;
        unsigned long _flags;
        int res = 0;
        unsigned char rcs0, rcs1, rcs2;
        unsigned char c0, c1;

        rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
        if (flags & AK4117_CHECK_NO_STAT)
                goto __rate;
        rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
        rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
        // printk("AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
        spin_lock_irqsave(&ak4117->lock, _flags);
        if (rcs0 & AK4117_PAR)
                ak4117->parity_errors++;
        if (rcs0 & AK4117_V)
                ak4117->v_bit_errors++;
        if (rcs2 & AK4117_CCRC)
                ak4117->ccrc_errors++;
        if (rcs2 & AK4117_QCRC)
                ak4117->qcrc_errors++;
        c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | 
AK4117_AUTO | AK4117_UNLCK)) ^
                     (rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | 
AK4117_AUTO | AK4117_UNLCK));
        c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
                     (rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
        ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
        ak4117->rcs1 = rcs1;
        ak4117->rcs2 = rcs2;
        spin_unlock_irqrestore(&ak4117->lock, _flags);

        if (rcs0 & AK4117_PAR)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[0]->id);
        if (rcs0 & AK4117_V)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[1]->id);
        if (rcs2 & AK4117_CCRC)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[2]->id);
        if (rcs2 & AK4117_QCRC)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[3]->id);

        /* rate change */
        if (c1 & 0x0f)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[4]->id);

        if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[6]->id);
        if (c0 & AK4117_QINT)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[8]->id);

        if (c0 & AK4117_AUDION)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[9]->id);
        if (c1 & AK4117_NPCM)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[10]->id);
        if (c1 & AK4117_DTSCD)
                snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, 
&ak4117->kctls[11]->id);
                
        if (ak4117->change_callback && (c0 | c1) != 0)
                ak4117->change_callback(ak4117, c0, c1);

      __rate:
        /* compare rate */
        res = external_rate(rcs1);
        if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
                snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
                if (snd_pcm_running(ak4117->substream)) {
                        // printk("rate changed (%i <- %i)\n", runtime->rate, res);
                        snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
                        wake_up(&runtime->sleep);
                        res = 1;
                }
                snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
        }
        return res;
}

static void snd_ak4117_timer(unsigned long data)
{
        ak4117_t *chip = snd_magic_cast(ak4117_t, (void *)data, return);

        if (chip->init)
                return;
        snd_ak4117_check_rate_and_errors(chip, 0);
        chip->timer.expires = 1 + jiffies;
        add_timer(&chip->timer);
}

EXPORT_SYMBOL(snd_ak4117_create);
EXPORT_SYMBOL(snd_ak4117_reg_write);
EXPORT_SYMBOL(snd_ak4117_reinit);
EXPORT_SYMBOL(snd_ak4117_build);
EXPORT_SYMBOL(snd_ak4117_external_rate);
EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);

Index: Makefile
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/i2c/other/Makefile,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- Makefile    28 Jan 2004 18:42:14 -0000      1.2
+++ Makefile    23 Feb 2004 20:37:45 -0000      1.3
@@ -3,10 +3,12 @@
 # Copyright (c) 2003 by Jaroslav Kysela <[EMAIL PROTECTED]>
 #
 
+snd-ak4117-objs := ak4117.o
 snd-ak4xxx-adda-objs := ak4xxx-adda.o
 snd-tea575x-tuner-objs := tea575x-tuner.o
 
 # Module Dependency
+obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o
 obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o
 obj-$(CONFIG_SND_ICE1724) += snd-ak4xxx-adda.o
 obj-$(CONFIG_SND_FM801_TEA575X) += snd-tea575x-tuner.o



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