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linux_dsm_epyc7002/include/uapi/linux/usb/audio.h
Jorge Sanjuan 0f292f023f ALSA: usb-audio: Add support for Processing Units in UAC3 
This patch adds support for the Processig Units defined in
the UAC3 spec. The main difference with the previous specs
is the lack of on/off switches in the controls for these
units and the addiction of the new Multi Function Processing
Unit.

The current version of the UAC3 spec doesn't define any
useful controls for the new Multi Function Processing Unit
so no control will get created once this unit is parsed.

Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-07-16 16:35:34 +02:00

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* <linux/usb/audio.h> -- USB Audio definitions.
*
* Copyright (C) 2006 Thumtronics Pty Ltd.
* Developed for Thumtronics by Grey Innovation
* Ben Williamson <ben.williamson@greyinnovation.com>
*
* This software is distributed under the terms of the GNU General Public
* License ("GPL") version 2, as published by the Free Software Foundation.
*
* This file holds USB constants and structures defined
* by the USB Device Class Definition for Audio Devices.
* Comments below reference relevant sections of that document:
*
* http://www.usb.org/developers/devclass_docs/audio10.pdf
*
* Types and defines in this file are either specific to version 1.0 of
* this standard or common for newer versions.
*/
#ifndef _UAPI__LINUX_USB_AUDIO_H
#define _UAPI__LINUX_USB_AUDIO_H
#include <linux/types.h>
/* bInterfaceProtocol values to denote the version of the standard used */
#define UAC_VERSION_1 0x00
#define UAC_VERSION_2 0x20
#define UAC_VERSION_3 0x30
/* A.2 Audio Interface Subclass Codes */
#define USB_SUBCLASS_AUDIOCONTROL 0x01
#define USB_SUBCLASS_AUDIOSTREAMING 0x02
#define USB_SUBCLASS_MIDISTREAMING 0x03
/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
#define UAC_HEADER 0x01
#define UAC_INPUT_TERMINAL 0x02
#define UAC_OUTPUT_TERMINAL 0x03
#define UAC_MIXER_UNIT 0x04
#define UAC_SELECTOR_UNIT 0x05
#define UAC_FEATURE_UNIT 0x06
#define UAC1_PROCESSING_UNIT 0x07
#define UAC1_EXTENSION_UNIT 0x08
/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
#define UAC_AS_GENERAL 0x01
#define UAC_FORMAT_TYPE 0x02
#define UAC_FORMAT_SPECIFIC 0x03
/* A.7 Processing Unit Process Types */
#define UAC_PROCESS_UNDEFINED 0x00
#define UAC_PROCESS_UP_DOWNMIX 0x01
#define UAC_PROCESS_DOLBY_PROLOGIC 0x02
#define UAC_PROCESS_STEREO_EXTENDER 0x03
#define UAC_PROCESS_REVERB 0x04
#define UAC_PROCESS_CHORUS 0x05
#define UAC_PROCESS_DYN_RANGE_COMP 0x06
/* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */
#define UAC_EP_GENERAL 0x01
/* A.9 Audio Class-Specific Request Codes */
#define UAC_SET_ 0x00
#define UAC_GET_ 0x80
#define UAC__CUR 0x1
#define UAC__MIN 0x2
#define UAC__MAX 0x3
#define UAC__RES 0x4
#define UAC__MEM 0x5
#define UAC_SET_CUR (UAC_SET_ | UAC__CUR)
#define UAC_GET_CUR (UAC_GET_ | UAC__CUR)
#define UAC_SET_MIN (UAC_SET_ | UAC__MIN)
#define UAC_GET_MIN (UAC_GET_ | UAC__MIN)
#define UAC_SET_MAX (UAC_SET_ | UAC__MAX)
#define UAC_GET_MAX (UAC_GET_ | UAC__MAX)
#define UAC_SET_RES (UAC_SET_ | UAC__RES)
#define UAC_GET_RES (UAC_GET_ | UAC__RES)
#define UAC_SET_MEM (UAC_SET_ | UAC__MEM)
#define UAC_GET_MEM (UAC_GET_ | UAC__MEM)
#define UAC_GET_STAT 0xff
/* A.10 Control Selector Codes */
/* A.10.1 Terminal Control Selectors */
#define UAC_TERM_COPY_PROTECT 0x01
/* A.10.2 Feature Unit Control Selectors */
#define UAC_FU_MUTE 0x01
#define UAC_FU_VOLUME 0x02
#define UAC_FU_BASS 0x03
#define UAC_FU_MID 0x04
#define UAC_FU_TREBLE 0x05
#define UAC_FU_GRAPHIC_EQUALIZER 0x06
#define UAC_FU_AUTOMATIC_GAIN 0x07
#define UAC_FU_DELAY 0x08
#define UAC_FU_BASS_BOOST 0x09
#define UAC_FU_LOUDNESS 0x0a
#define UAC_CONTROL_BIT(CS) (1 << ((CS) - 1))
/* A.10.3.1 Up/Down-mix Processing Unit Controls Selectors */
#define UAC_UD_ENABLE 0x01
#define UAC_UD_MODE_SELECT 0x02
/* A.10.3.2 Dolby Prologic (tm) Processing Unit Controls Selectors */
#define UAC_DP_ENABLE 0x01
#define UAC_DP_MODE_SELECT 0x02
/* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
#define UAC_3D_ENABLE 0x01
#define UAC_3D_SPACE 0x02
/* A.10.3.4 Reverberation Processing Unit Control Selectors */
#define UAC_REVERB_ENABLE 0x01
#define UAC_REVERB_LEVEL 0x02
#define UAC_REVERB_TIME 0x03
#define UAC_REVERB_FEEDBACK 0x04
/* A.10.3.5 Chorus Processing Unit Control Selectors */
#define UAC_CHORUS_ENABLE 0x01
#define UAC_CHORUS_LEVEL 0x02
#define UAC_CHORUS_RATE 0x03
#define UAC_CHORUS_DEPTH 0x04
/* A.10.3.6 Dynamic Range Compressor Unit Control Selectors */
#define UAC_DCR_ENABLE 0x01
#define UAC_DCR_RATE 0x02
#define UAC_DCR_MAXAMPL 0x03
#define UAC_DCR_THRESHOLD 0x04
#define UAC_DCR_ATTACK_TIME 0x05
#define UAC_DCR_RELEASE_TIME 0x06
/* A.10.4 Extension Unit Control Selectors */
#define UAC_XU_ENABLE 0x01
/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
#define UAC_MS_HEADER 0x01
#define UAC_MIDI_IN_JACK 0x02
#define UAC_MIDI_OUT_JACK 0x03
/* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */
#define UAC_MS_GENERAL 0x01
/* Terminals - 2.1 USB Terminal Types */
#define UAC_TERMINAL_UNDEFINED 0x100
#define UAC_TERMINAL_STREAMING 0x101
#define UAC_TERMINAL_VENDOR_SPEC 0x1FF
/* Terminal Control Selectors */
/* 4.3.2 Class-Specific AC Interface Descriptor */
struct uac1_ac_header_descriptor {
__u8 bLength; /* 8 + n */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* UAC_MS_HEADER */
__le16 bcdADC; /* 0x0100 */
__le16 wTotalLength; /* includes Unit and Terminal desc. */
__u8 bInCollection; /* n */
__u8 baInterfaceNr[]; /* [n] */
} __attribute__ ((packed));
#define UAC_DT_AC_HEADER_SIZE(n) (8 + (n))
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
struct uac1_ac_header_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__le16 bcdADC; \
__le16 wTotalLength; \
__u8 bInCollection; \
__u8 baInterfaceNr[n]; \
} __attribute__ ((packed))
/* 4.3.2.1 Input Terminal Descriptor */
struct uac_input_terminal_descriptor {
__u8 bLength; /* in bytes: 12 */
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
__u8 bDescriptorSubtype; /* INPUT_TERMINAL descriptor subtype */
__u8 bTerminalID; /* Constant uniquely terminal ID */
__le16 wTerminalType; /* USB Audio Terminal Types */
__u8 bAssocTerminal; /* ID of the Output Terminal associated */
__u8 bNrChannels; /* Number of logical output channels */
__le16 wChannelConfig;
__u8 iChannelNames;
__u8 iTerminal;
} __attribute__ ((packed));
#define UAC_DT_INPUT_TERMINAL_SIZE 12
/* Terminals - 2.2 Input Terminal Types */
#define UAC_INPUT_TERMINAL_UNDEFINED 0x200
#define UAC_INPUT_TERMINAL_MICROPHONE 0x201
#define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202
#define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203
#define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204
#define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205
#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
/* Terminals - control selectors */
#define UAC_TERMINAL_CS_COPY_PROTECT_CONTROL 0x01
/* 4.3.2.2 Output Terminal Descriptor */
struct uac1_output_terminal_descriptor {
__u8 bLength; /* in bytes: 9 */
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
__u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */
__u8 bTerminalID; /* Constant uniquely terminal ID */
__le16 wTerminalType; /* USB Audio Terminal Types */
__u8 bAssocTerminal; /* ID of the Input Terminal associated */
__u8 bSourceID; /* ID of the connected Unit or Terminal*/
__u8 iTerminal;
} __attribute__ ((packed));
#define UAC_DT_OUTPUT_TERMINAL_SIZE 9
/* Terminals - 2.3 Output Terminal Types */
#define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300
#define UAC_OUTPUT_TERMINAL_SPEAKER 0x301
#define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302
#define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303
#define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304
#define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305
#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)
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \
struct uac_feature_unit_descriptor_##ch { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bUnitID; \
__u8 bSourceID; \
__u8 bControlSize; \
__le16 bmaControls[ch + 1]; \
__u8 iFeature; \
} __attribute__ ((packed))
/* 4.3.2.3 Mixer Unit Descriptor */
struct uac_mixer_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *desc)
{
return desc->baSourceID[desc->bNrInPins];
}
static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
if (protocol == UAC_VERSION_1)
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
desc->baSourceID[desc->bNrInPins + 1];
else
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
(desc->baSourceID[desc->bNrInPins + 1]);
}
static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
return (protocol == UAC_VERSION_1) ?
desc->baSourceID[desc->bNrInPins + 3] :
desc->baSourceID[desc->bNrInPins + 5];
}
static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return &desc->baSourceID[desc->bNrInPins + 4];
case UAC_VERSION_2:
return &desc->baSourceID[desc->bNrInPins + 6];
case UAC_VERSION_3:
return &desc->baSourceID[desc->bNrInPins + 2];
default:
return NULL;
}
}
static inline __u16 uac3_mixer_unit_wClusterDescrID(struct uac_mixer_unit_descriptor *desc)
{
return (desc->baSourceID[desc->bNrInPins + 1] << 8) |
desc->baSourceID[desc->bNrInPins];
}
static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
/* 4.3.2.4 Selector Unit Descriptor */
struct uac_selector_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUintID;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_selector_unit_iSelector(struct uac_selector_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
/* 4.3.2.5 Feature Unit Descriptor */
struct uac_feature_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__u8 bSourceID;
__u8 bControlSize;
__u8 bmaControls[0]; /* variable length */
} __attribute__((packed));
static inline __u8 uac_feature_unit_iFeature(struct uac_feature_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
/* 4.3.2.6 Processing Unit Descriptors */
struct uac_processing_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__le16 wProcessType;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_descriptor *desc)
{
return desc->baSourceID[desc->bNrInPins];
}
static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc,
int protocol)
{
if (protocol == UAC_VERSION_1)
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
desc->baSourceID[desc->bNrInPins + 1];
else
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
(desc->baSourceID[desc->bNrInPins + 1]);
}
static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc,
int protocol)
{
return (protocol == UAC_VERSION_1) ?
desc->baSourceID[desc->bNrInPins + 3] :
desc->baSourceID[desc->bNrInPins + 5];
}
static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return desc->baSourceID[desc->bNrInPins + 4];
case UAC_VERSION_2:
return 2; /* in UAC2, this value is constant */
case UAC_VERSION_3:
return 4; /* in UAC3, this value is constant */
default:
return 1;
}
}
static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return &desc->baSourceID[desc->bNrInPins + 5];
case UAC_VERSION_2:
return &desc->baSourceID[desc->bNrInPins + 6];
case UAC_VERSION_3:
return &desc->baSourceID[desc->bNrInPins + 2];
default:
return NULL;
}
}
static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
switch (protocol) {
case UAC_VERSION_1:
case UAC_VERSION_2:
default:
return *(uac_processing_unit_bmControls(desc, protocol)
+ control_size);
case UAC_VERSION_3:
return 0; /* UAC3 does not have this field */
}
}
static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
switch (protocol) {
case UAC_VERSION_1:
case UAC_VERSION_2:
default:
return uac_processing_unit_bmControls(desc, protocol)
+ control_size + 1;
case UAC_VERSION_3:
return uac_processing_unit_bmControls(desc, protocol)
+ control_size;
}
}
/* 4.5.2 Class-Specific AS Interface Descriptor */
struct uac1_as_header_descriptor {
__u8 bLength; /* in bytes: 7 */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* AS_GENERAL */
__u8 bTerminalLink; /* Terminal ID of connected Terminal */
__u8 bDelay; /* Delay introduced by the data path */
__le16 wFormatTag; /* The Audio Data Format */
} __attribute__ ((packed));
#define UAC_DT_AS_HEADER_SIZE 7
/* Formats - A.1.1 Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_I_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I_PCM 0x1
#define UAC_FORMAT_TYPE_I_PCM8 0x2
#define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3
#define UAC_FORMAT_TYPE_I_ALAW 0x4
#define UAC_FORMAT_TYPE_I_MULAW 0x5
struct uac_format_type_i_continuous_descriptor {
__u8 bLength; /* in bytes: 8 + (ns * 3) */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
__u8 bFormatType; /* FORMAT_TYPE_1 */
__u8 bNrChannels; /* physical channels in the stream */
__u8 bSubframeSize; /* */
__u8 bBitResolution;
__u8 bSamFreqType;
__u8 tLowerSamFreq[3];
__u8 tUpperSamFreq[3];
} __attribute__ ((packed));
#define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14
struct uac_format_type_i_discrete_descriptor {
__u8 bLength; /* in bytes: 8 + (ns * 3) */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
__u8 bFormatType; /* FORMAT_TYPE_1 */
__u8 bNrChannels; /* physical channels in the stream */
__u8 bSubframeSize; /* */
__u8 bBitResolution;
__u8 bSamFreqType;
__u8 tSamFreq[][3];
} __attribute__ ((packed));
#define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \
struct uac_format_type_i_discrete_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bFormatType; \
__u8 bNrChannels; \
__u8 bSubframeSize; \
__u8 bBitResolution; \
__u8 bSamFreqType; \
__u8 tSamFreq[n][3]; \
} __attribute__ ((packed))
#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
struct uac_format_type_i_ext_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__u8 bSubslotSize;
__u8 bBitResolution;
__u8 bHeaderLength;
__u8 bControlSize;
__u8 bSideBandProtocol;
} __attribute__((packed));
/* Formats - Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_II_MPEG 0x1001
#define UAC_FORMAT_TYPE_II_AC3 0x1002
struct uac_format_type_ii_discrete_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__le16 wMaxBitRate;
__le16 wSamplesPerFrame;
__u8 bSamFreqType;
__u8 tSamFreq[][3];
} __attribute__((packed));
struct uac_format_type_ii_ext_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__le16 wMaxBitRate;
__le16 wSamplesPerFrame;
__u8 bHeaderLength;
__u8 bSideBandProtocol;
} __attribute__((packed));
/* type III */
#define UAC_FORMAT_TYPE_III_IEC1937_AC3 0x2001
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG1_LAYER1 0x2002
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_NOEXT 0x2003
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_EXT 0x2004
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER1_LS 0x2005
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER23_LS 0x2006
/* Formats - A.2 Format Type Codes */
#define UAC_FORMAT_TYPE_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I 0x1
#define UAC_FORMAT_TYPE_II 0x2
#define UAC_FORMAT_TYPE_III 0x3
#define UAC_EXT_FORMAT_TYPE_I 0x81
#define UAC_EXT_FORMAT_TYPE_II 0x82
#define UAC_EXT_FORMAT_TYPE_III 0x83
struct uac_iso_endpoint_descriptor {
__u8 bLength; /* in bytes: 7 */
__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */
__u8 bDescriptorSubtype; /* EP_GENERAL */
__u8 bmAttributes;
__u8 bLockDelayUnits;
__le16 wLockDelay;
} __attribute__((packed));
#define UAC_ISO_ENDPOINT_DESC_SIZE 7
#define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01
#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
/* status word format (3.7.1.1) */
#define UAC1_STATUS_TYPE_ORIG_MASK 0x0f
#define UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF 0x0
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_IF 0x1
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_EP 0x2
#define UAC1_STATUS_TYPE_IRQ_PENDING (1 << 7)
#define UAC1_STATUS_TYPE_MEM_CHANGED (1 << 6)
struct uac1_status_word {
__u8 bStatusType;
__u8 bOriginator;
} __attribute__((packed));
#endif /* _UAPI__LINUX_USB_AUDIO_H */
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