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| author |   Daniel Mack <daniel@caiaq.de> | 2010-03-11 21:13:25 +0100 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2010-03-12 12:21:26 +0100 |
| commit | 23caaf19b11eda7054348452e1618d4512a86907 (patch) | |
| tree | de0f69f74931fb033f3291c27691a3c2ac6367a2 /include/linux/usb/audio-v2.h | |
| parent | ALSA: usb-mixer: parse descriptors with structs (diff) | |
| download | linux-dev-23caaf19b11eda7054348452e1618d4512a86907.tar.xz linux-dev-23caaf19b11eda7054348452e1618d4512a86907.zip | |
ALSA: usb-mixer: Add support for Audio Class v2.0
USB Audio Class v2.0 compliant devices have different descriptors and a
different way of setting/getting min/max/res/cur properties. This patch
adds support for them.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/linux/usb/audio-v2.h')
| -rw-r--r-- | include/linux/usb/audio-v2.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h index 3b8560d233bd..0952231e6c3f 100644 --- a/include/linux/usb/audio-v2.h +++ b/include/linux/usb/audio-v2.h @@ -43,6 +43,53 @@ struct uac_clock_selector_descriptor { __u8 baCSourceID[]; } __attribute__((packed)); +/* 4.7.2.4 Input terminal descriptor */ + +struct uac2_input_terminal_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubtype; + __u8 bTerminalID; + __u16 wTerminalType; + __u8 bAssocTerminal; + __u8 bCSourceID; + __u8 bNrChannels; + __u32 bmChannelConfig; + __u8 iChannelNames; + __u16 bmControls; + __u8 iTerminal; +} __attribute__((packed)); + +/* 4.7.2.5 Output terminal descriptor */ + +struct uac2_output_terminal_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubtype; + __u8 bTerminalID; + __u16 wTerminalType; + __u8 bAssocTerminal; + __u8 bSourceID; + __u8 bCSourceID; + __u16 bmControls; + __u8 iTerminal; +} __attribute__((packed)); + + + +/* 4.7.2.8 Feature Unit Descriptor */ + +struct uac2_feature_unit_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubtype; + __u8 bUnitID; + __u8 bSourceID; + /* bmaControls is actually u32, + * but u8 is needed for the hybrid parser */ + __u8 bmaControls[0]; /* variable length */ +} __attribute__((packed)); + /* 4.9.2 Class-Specific AS Interface Descriptor */ struct uac_as_header_descriptor_v2 { |