vxp_mixer.c
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/*
* Driver for Digigram VXpocket soundcards
*
* VX-pocket mixer
*
* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
*
* 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/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "vxpocket.h"
#define MIC_LEVEL_MIN 0
#define MIC_LEVEL_MAX 8
/*
* mic level control (for VXPocket)
*/
static int vx_mic_level_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 = MIC_LEVEL_MAX;
return 0;
}
static int vx_mic_level_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
ucontrol->value.integer.value[0] = chip->mic_level;
return 0;
}
static int vx_mic_level_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
unsigned int val = ucontrol->value.integer.value[0];
if (val > MIC_LEVEL_MAX)
return -EINVAL;
mutex_lock(&_chip->mixer_mutex);
if (chip->mic_level != ucontrol->value.integer.value[0]) {
vx_set_mic_level(_chip, ucontrol->value.integer.value[0]);
chip->mic_level = ucontrol->value.integer.value[0];
mutex_unlock(&_chip->mixer_mutex);
return 1;
}
mutex_unlock(&_chip->mixer_mutex);
return 0;
}
static const DECLARE_TLV_DB_SCALE(db_scale_mic, -21, 3, 0);
static struct snd_kcontrol_new vx_control_mic_level = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ),
.name = "Mic Capture Volume",
.info = vx_mic_level_info,
.get = vx_mic_level_get,
.put = vx_mic_level_put,
.tlv = { .p = db_scale_mic },
};
/*
* mic boost level control (for VXP440)
*/
#define vx_mic_boost_info snd_ctl_boolean_mono_info
static int vx_mic_boost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
ucontrol->value.integer.value[0] = chip->mic_level;
return 0;
}
static int vx_mic_boost_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
int val = !!ucontrol->value.integer.value[0];
mutex_lock(&_chip->mixer_mutex);
if (chip->mic_level != val) {
vx_set_mic_boost(_chip, val);
chip->mic_level = val;
mutex_unlock(&_chip->mixer_mutex);
return 1;
}
mutex_unlock(&_chip->mixer_mutex);
return 0;
}
static struct snd_kcontrol_new vx_control_mic_boost = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Mic Boost",
.info = vx_mic_boost_info,
.get = vx_mic_boost_get,
.put = vx_mic_boost_put,
};
int vxp_add_mic_controls(struct vx_core *_chip)
{
struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
int err;
/* mute input levels */
chip->mic_level = 0;
switch (_chip->type) {
case VX_TYPE_VXPOCKET:
vx_set_mic_level(_chip, 0);
break;
case VX_TYPE_VXP440:
vx_set_mic_boost(_chip, 0);
break;
}
/* mic level */
switch (_chip->type) {
case VX_TYPE_VXPOCKET:
if ((err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_level, chip))) < 0)
return err;
break;
case VX_TYPE_VXP440:
if ((err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_boost, chip))) < 0)
return err;
break;
}
return 0;
}