[ALSA] usb-audio - add Extigy/Audigy 2 NX remote control support

ALSA Core,USB generic driver
Add an hwdep interface that supports reading remote control data from
Sound Blaster Extigy and Audigy 2 NX devices.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/sound/asound.h b/include/sound/asound.h
index 26db585a1819..4321e92a7f8b 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -113,9 +113,10 @@ enum sndrv_hwdep_iface {
         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
+        SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
 
         /* Don't forget to change the following: */
-        SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_PCXHR
+        SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC
 };
 
 struct sndrv_hwdep_info {