diff --git a/include/tinyalsa/asoundlib.h b/include/tinyalsa/asoundlib.h
index 809e02d..1554b52 100644
--- a/include/tinyalsa/asoundlib.h
+++ b/include/tinyalsa/asoundlib.h
@@ -93,17 +93,20 @@
     unsigned int period_count;
     enum pcm_format format;
 
-    /* Values to use for the ALSA start, stop and silence thresholds.  Setting
-     * any one of these values to 0 will cause the default tinyalsa values to be
-     * used instead.  Tinyalsa defaults are as follows.
+    /* Values to use for the ALSA start, stop and silence thresholds, and
+     * silence size.  Setting any one of these values to 0 will cause the
+     * default tinyalsa values to be used instead.
+     * Tinyalsa defaults are as follows.
      *
      * start_threshold   : period_count * period_size
      * stop_threshold    : period_count * period_size
      * silence_threshold : 0
+     * silence_size      : 0
      */
     unsigned int start_threshold;
     unsigned int stop_threshold;
     unsigned int silence_threshold;
+    unsigned int silence_size;
 
     /* Minimum number of frames available before pcm_mmap_write() will actually
      * write into the kernel buffer. Only used if the stream is opened in mmap mode
diff --git a/mixer.c b/mixer.c
index 4568cca..9aa2eb2 100644
--- a/mixer.c
+++ b/mixer.c
@@ -360,6 +360,11 @@
         source = ev.value.bytes.data;
         break;
 
+    case SNDRV_CTL_ELEM_TYPE_IEC958:
+        size = sizeof(ev.value.iec958);
+        source = &ev.value.iec958;
+        break;
+
     default:
         return -EINVAL;
     }
@@ -427,6 +432,11 @@
         dest = ev.value.bytes.data;
         break;
 
+    case SNDRV_CTL_ELEM_TYPE_IEC958:
+        size = sizeof(ev.value.iec958);
+        dest = &ev.value.iec958;
+        break;
+
     default:
         return -EINVAL;
     }
diff --git a/pcm.c b/pcm.c
index d8af58a..e3a41b0 100644
--- a/pcm.c
+++ b/pcm.c
@@ -953,8 +953,8 @@
         sparams.avail_min = config->avail_min;
 
     sparams.xfer_align = config->period_size / 2; /* needed for old kernels */
-    sparams.silence_size = 0;
     sparams.silence_threshold = config->silence_threshold;
+    sparams.silence_size = config->silence_size;
     pcm->boundary = sparams.boundary = pcm->buffer_size;
 
     while (pcm->boundary * 2 <= INT_MAX - pcm->buffer_size)