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authorTakashi Iwai <tiwai@suse.de>2008-02-18 13:05:50 +0100
committerTakashi Iwai <tiwai@suse.de>2008-04-24 12:00:12 +0200
commit1c82ed1bc531746a8fa9b46c593ddce546f28026 (patch)
treebc86ba78100f31856cff9b596634d795d2793984 /sound/core/vmaster.c
parente922b0028fad87de0d262f9fa51f98595d2df258 (diff)
[ALSA] Keep private TLV entry in vmaster itself
Use a private array for TLV entries of virtual master controls instead of (supposed) static array. This cleans up the existing codes. Also, now vmaster assumes the simple dB-range TLV that is the only type it can handle. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/vmaster.c')
-rw-r--r--sound/core/vmaster.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c
index 7cfd8b8fb4e..4cc57f902e2 100644
--- a/sound/core/vmaster.c
+++ b/sound/core/vmaster.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/control.h>
+#include <sound/tlv.h>
/*
* a subset of information returned via ctl info callback
@@ -34,6 +35,7 @@ struct link_master {
struct list_head slaves;
struct link_ctl_info info;
int val; /* the master value */
+ unsigned int tlv[4];
};
/*
@@ -357,11 +359,12 @@ struct snd_kcontrol *snd_ctl_make_virtual_master(char *name,
kctl->private_free = master_free;
/* additional (constant) TLV read */
- if (tlv) {
- /* FIXME: this assumes that the max volume is 0 dB */
+ if (tlv && tlv[0] == SNDRV_CTL_TLVT_DB_SCALE) {
kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
- kctl->tlv.p = tlv;
+ memcpy(master->tlv, tlv, sizeof(master->tlv));
+ kctl->tlv.p = master->tlv;
}
+
return kctl;
}