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| author | Takashi Iwai <tiwai@suse.de> | 2020-02-13 12:20:58 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-02-17 15:29:58 +0100 |
| commit | 10fa9512769fa3b15ea29f4f331f4604c17b4b2c (patch) | |
| tree | 44ed9bfe9f530c3929a7fa19bdcb5d61f1f2750a | |
| parent | ALSA: rawmidi: Avoid bit fields for state flags (diff) | |
| download | linux-10fa9512769fa3b15ea29f4f331f4604c17b4b2c.tar.xz linux-10fa9512769fa3b15ea29f4f331f4604c17b4b2c.zip | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200213112059.18745-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/linux/usb/audio-v2.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h index ba4b3e3327ff..cb9900b34b67 100644 --- a/include/linux/usb/audio-v2.h +++ b/include/linux/usb/audio-v2.h @@ -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 { |