ALSA: usb-audio: Add mixer control for Digidesign Mbox 1 clock source
This patch provides the infrastructure for the Digidesign Mbox 1
to have a mixer control for selecting the clock source.
Valid options are Internal and S/PDIF external sync.
A non-documented command is sent to the device to enable this feature
found by reverse engineering and bus snooping.
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index d1d72ff..1994d41 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -179,6 +179,11 @@
{ 0 } /* terminator */
};
+static struct usbmix_name_map mbox1_map[] = {
+ { 1, "Clock" },
+ { 0 } /* terminator */
+};
+
static struct usbmix_selector_map c400_selectors[] = {
{
.id = 0x80,
@@ -416,6 +421,10 @@
.map = aureon_51_2_map,
},
{
+ .id = USB_ID(0x0dba, 0x1000),
+ .map = mbox1_map,
+ },
+ {
.id = USB_ID(0x13e5, 0x0001),
.map = scratch_live_map,
.ignore_ctl_error = 1,