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authorTakashi Iwai <tiwai@suse.de>2006-08-23 15:07:19 +0400
committerJaroslav Kysela <perex@suse.cz>2006-09-23 12:43:19 +0400
commitfb567a8e4f077b7b084c0558706339c35a4fb186 (patch)
tree63bfffca736bb7992cee1a566478fa7d967a3608 /sound/drivers/dummy.c
parenta0aef8edfc9d6d682dba557fe42599297cbc329a (diff)
downloadlinux-fb567a8e4f077b7b084c0558706339c35a4fb186.tar.xz
[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>
Diffstat (limited to 'sound/drivers/dummy.c')
-rw-r--r--sound/drivers/dummy.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 73b16134a434..42001efa9f3e 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -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, \