ALSA: usb-audio: Add bi-directional terminal types

Define the bi-directional USB terminal types for audio devices.

Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index 13d98e6..74e520f 100644 (file)
--- a/include/uapi/linux/usb/audio.h
+++ b/include/uapi/linux/usb/audio.h
@@ -230,6 +230,14 @@ struct uac1_output_terminal_descriptor {
 #define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER      0x306
 #define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER   0x307
 
+/* Terminals - 2.4 Bi-directional Terminal Types */
+#define UAC_BIDIR_TERMINAL_UNDEFINED                   0x400
+#define UAC_BIDIR_TERMINAL_HANDSET                     0x401
+#define UAC_BIDIR_TERMINAL_HEADSET                     0x402
+#define UAC_BIDIR_TERMINAL_SPEAKER_PHONE               0x403
+#define UAC_BIDIR_TERMINAL_ECHO_SUPPRESSING            0x404
+#define UAC_BIDIR_TERMINAL_ECHO_CANCELING              0x405
+
 /* Set bControlSize = 2 as default setting */
 #define UAC_DT_FEATURE_UNIT_SIZE(ch)           (7 + ((ch) + 1) * 2)