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[ALSA] Add dB scale information to dummy driver 

Added the dB scale information to dummy driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Takashi Iwai 2006-08-23 13:07:19 +02:00 committed by Jaroslav Kysela
parent a0aef8edfc
commit fb567a8e4f
1 changed files with 8 additions and 2 deletions
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10
sound/drivers/dummy.c
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@ -29,6 +29,7 @@
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/initval.h>
@ -443,10 +444,13 @@ static int __init snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int su
}
#define DUMMY_VOLUME(xname, xindex, addr) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
.name = xname, .index = xindex, \
.info = snd_dummy_volume_info, \
.get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \
.private_value = addr }
.private_value = addr, \
.tlv = { .p = db_scale_dummy } }
static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
@ -497,6 +501,8 @@ static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol,
return change;
}
static DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);
#define DUMMY_CAPSRC(xname, xindex, addr) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_dummy_capsrc_info, \