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Subject[PATCH 1/2] ALSA: usb-audio: Add bi-directional terminal types.
Date
Define the bi-directional USB terminal types for audio devices.

Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
---
include/uapi/linux/usb/audio.h | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index 13d98e6e0db1..74e520fb944f 100644
--- 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)

--
2.11.0
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