#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
struct list_head slaves;
struct link_ctl_info info;
int val; /* the master value */
+ unsigned int tlv[4];
};
/*
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;
}