2 files changed, 15 insertions, 0 deletions

diff --git a/include/uapi/sound/firewire.h b/include/uapi/sound/firewire.h
index b9bc4bb1756b..012f81bf4750 100644
--- a/include/uapi/sound/firewire.h
+++ b/include/uapi/sound/firewire.h
@@ -66,6 +66,7 @@ union snd_firewire_event {
 #define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info)
 #define SNDRV_FIREWIRE_IOCTL_LOCK      _IO('H', 0xf9)
 #define SNDRV_FIREWIRE_IOCTL_UNLOCK    _IO('H', 0xfa)
+#define SNDRV_FIREWIRE_IOCTL_TASCAM_STATE _IOR('H', 0xfb, struct snd_firewire_tascam_state)
 
 #define SNDRV_FIREWIRE_TYPE_DICE        1
 #define SNDRV_FIREWIRE_TYPE_FIREWORKS   2
@@ -90,4 +91,8 @@ struct snd_firewire_get_info {
 
 #define SNDRV_FIREWIRE_TASCAM_STATE_COUNT       64
 
+struct snd_firewire_tascam_state {
+        __be32 data[SNDRV_FIREWIRE_TASCAM_STATE_COUNT];
+};
+
 #endif /* _UAPI_SOUND_FIREWIRE_H_INCLUDED */
diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c
index 4e4c1e9020e8..a80397116c48 100644
--- a/sound/firewire/tascam/tascam-hwdep.c
+++ b/sound/firewire/tascam/tascam-hwdep.c
@@ -123,6 +123,14 @@ static int hwdep_unlock(struct snd_tscm *tscm)
         return err;
 }
 
+static int tscm_hwdep_state(struct snd_tscm *tscm, void __user *arg)
+{
+        if (copy_to_user(arg, tscm->state, sizeof(tscm->state)))
+                return -EFAULT;
+
+        return 0;
+}
+
 static int hwdep_release(struct snd_hwdep *hwdep, struct file *file)
 {
         struct snd_tscm *tscm = hwdep->private_data;
@@ -147,6 +155,8 @@ static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
                 return hwdep_lock(tscm);
         case SNDRV_FIREWIRE_IOCTL_UNLOCK:
                 return hwdep_unlock(tscm);
+        case SNDRV_FIREWIRE_IOCTL_TASCAM_STATE:
+                return tscm_hwdep_state(tscm, (void __user *)arg);
         default:
                 return -ENOIOCTLCMD;
         }