Commit 10fa9512 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

usb: audio-v2: Add uac2_effect_unit_descriptor definition 



The UAC2 Effect Unit Descriptor has a slightly different definition
from other similar ones like Processing Unit or Extension Unit.
Define it here so that it can be used in USB-audio driver in a later
patch.

Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200213112059.18745-2-tiwai@suse.de


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent dfa9a5ef

include/linux/usb/audio-v2.h

+12 −0
Original line number Diff line number Diff line
@@ -156,6 +156,18 @@ struct uac2_feature_unit_descriptor { 
	__u8 bmaControls[0]; /* variable length */

} __attribute__((packed));



/* 4.7.2.10 Effect Unit Descriptor */



struct uac2_effect_unit_descriptor {

	__u8 bLength;

	__u8 bDescriptorType;

	__u8 bDescriptorSubtype;

	__u8 bUnitID;

	__le16 wEffectType;

	__u8 bSourceID;

	__u8 bmaControls[]; /* variable length */

} __attribute__((packed));



/* 4.9.2 Class-Specific AS Interface Descriptor */



struct uac2_as_header_descriptor {