[linux-block.git] / include / linux / usb / audio.h

/*
 * <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
 */

#ifndef __LINUX_USB_AUDIO_H
#define __LINUX_USB_AUDIO_H

#include <linux/types.h>

/* 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 UAC_PROCESSING_UNIT		0x07
#define UAC_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.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

/* 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 uac_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 uac_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

/* 4.3.2.2 Output Terminal Descriptor */
struct uac_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

/* 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))

/* 4.5.2 Class-Specific AS Interface Descriptor */
struct uac_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))

/* 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

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;
};
#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

/* A.10.2 Feature Unit Control Selectors */
#define UAC_FU_CONTROL_UNDEFINED	0x00
#define UAC_MUTE_CONTROL		0x01
#define UAC_VOLUME_CONTROL		0x02
#define UAC_BASS_CONTROL		0x03
#define UAC_MID_CONTROL			0x04
#define UAC_TREBLE_CONTROL		0x05
#define UAC_GRAPHIC_EQUALIZER_CONTROL	0x06
#define UAC_AUTOMATIC_GAIN_CONTROL	0x07
#define UAC_DELAY_CONTROL		0x08
#define UAC_BASS_BOOST_CONTROL		0x09
#define UAC_LOUDNESS_CONTROL		0x0a

#define UAC_FU_MUTE		(1 << (UAC_MUTE_CONTROL - 1))
#define UAC_FU_VOLUME		(1 << (UAC_VOLUME_CONTROL - 1))
#define UAC_FU_BASS		(1 << (UAC_BASS_CONTROL - 1))
#define UAC_FU_MID		(1 << (UAC_MID_CONTROL - 1))
#define UAC_FU_TREBLE		(1 << (UAC_TREBLE_CONTROL - 1))
#define UAC_FU_GRAPHIC_EQ	(1 << (UAC_GRAPHIC_EQUALIZER_CONTROL - 1))
#define UAC_FU_AUTO_GAIN	(1 << (UAC_AUTOMATIC_GAIN_CONTROL - 1))
#define UAC_FU_DELAY		(1 << (UAC_DELAY_CONTROL - 1))
#define UAC_FU_BASS_BOOST	(1 << (UAC_BASS_BOOST_CONTROL - 1))
#define UAC_FU_LOUDNESS		(1 << (UAC_LOUDNESS_CONTROL - 1))

#ifdef __KERNEL__

struct usb_audio_control {
	struct list_head list;
	const char *name;
	u8 type;
	int data[5];
	int (*set)(struct usb_audio_control *con, u8 cmd, int value);
	int (*get)(struct usb_audio_control *con, u8 cmd);
};

struct usb_audio_control_selector {
	struct list_head list;
	struct list_head control;
	u8 id;
	const char *name;
	u8 type;
	struct usb_descriptor_header *desc;
};

#endif /* __KERNEL__ */

#endif /* __LINUX_USB_AUDIO_H */
Commit	Line	Data
f2ebf92c BW	1	/*
	2	* <linux/usb/audio.h> -- USB Audio definitions.
	3	*
	4	* Copyright (C) 2006 Thumtronics Pty Ltd.
	5	* Developed for Thumtronics by Grey Innovation
	6	* Ben Williamson <ben.williamson@greyinnovation.com>
	7	*
	8	* This software is distributed under the terms of the GNU General Public
	9	* License ("GPL") version 2, as published by the Free Software Foundation.
	10	*
	11	* This file holds USB constants and structures defined
	12	* by the USB Device Class Definition for Audio Devices.
	13	* Comments below reference relevant sections of that document:
	14	*
	15	* http://www.usb.org/developers/devclass_docs/audio10.pdf
	16	*/
	17
	18	#ifndef __LINUX_USB_AUDIO_H
	19	#define __LINUX_USB_AUDIO_H
	20
	21	#include <linux/types.h>
	22
	23	/* A.2 Audio Interface Subclass Codes */
	24	#define USB_SUBCLASS_AUDIOCONTROL 0x01
	25	#define USB_SUBCLASS_AUDIOSTREAMING 0x02
	26	#define USB_SUBCLASS_MIDISTREAMING 0x03
	27
512ad27d LP	28	/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
	29	#define UAC_HEADER 0x01
	30	#define UAC_INPUT_TERMINAL 0x02
	31	#define UAC_OUTPUT_TERMINAL 0x03
	32	#define UAC_MIXER_UNIT 0x04
	33	#define UAC_SELECTOR_UNIT 0x05
	34	#define UAC_FEATURE_UNIT 0x06
	35	#define UAC_PROCESSING_UNIT 0x07
	36	#define UAC_EXTENSION_UNIT 0x08
	37
	38	/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
	39	#define UAC_AS_GENERAL 0x01
	40	#define UAC_FORMAT_TYPE 0x02
	41	#define UAC_FORMAT_SPECIFIC 0x03
	42
	43	/* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */
	44	#define UAC_EP_GENERAL 0x01
	45
	46	/* A.9 Audio Class-Specific Request Codes */
	47	#define UAC_SET_ 0x00
	48	#define UAC_GET_ 0x80
	49
	50	#define UAC__CUR 0x1
	51	#define UAC__MIN 0x2
	52	#define UAC__MAX 0x3
	53	#define UAC__RES 0x4
	54	#define UAC__MEM 0x5
	55
	56	#define UAC_SET_CUR (UAC_SET_ \| UAC__CUR)
	57	#define UAC_GET_CUR (UAC_GET_ \| UAC__CUR)
	58	#define UAC_SET_MIN (UAC_SET_ \| UAC__MIN)
	59	#define UAC_GET_MIN (UAC_GET_ \| UAC__MIN)
	60	#define UAC_SET_MAX (UAC_SET_ \| UAC__MAX)
	61	#define UAC_GET_MAX (UAC_GET_ \| UAC__MAX)
	62	#define UAC_SET_RES (UAC_SET_ \| UAC__RES)
	63	#define UAC_GET_RES (UAC_GET_ \| UAC__RES)
	64	#define UAC_SET_MEM (UAC_SET_ \| UAC__MEM)
	65	#define UAC_GET_MEM (UAC_GET_ \| UAC__MEM)
	66
	67	#define UAC_GET_STAT 0xff
	68
	69	/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
	70	#define UAC_MS_HEADER 0x01
	71	#define UAC_MIDI_IN_JACK 0x02
	72	#define UAC_MIDI_OUT_JACK 0x03
	73
	74	/* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */
	75	#define UAC_MS_GENERAL 0x01
	76
	77	/* Terminals - 2.1 USB Terminal Types */
	78	#define UAC_TERMINAL_UNDEFINED 0x100
	79	#define UAC_TERMINAL_STREAMING 0x101
	80	#define UAC_TERMINAL_VENDOR_SPEC 0x1FF
c47d7b09 BW	81
c47d7b09 BW	82	/* Terminal Control Selectors */
f2ebf92c	83	/* 4.3.2 Class-Specific AC Interface Descriptor */
512ad27d	84	struct uac_ac_header_descriptor {
c47d7b09	85	__u8 bLength; /* 8 + n */
41dceed5	86	__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
512ad27d	87	__u8 bDescriptorSubtype; /* UAC_MS_HEADER */
41dceed5 GKH	88	__le16 bcdADC; /* 0x0100 */
	89	__le16 wTotalLength; /* includes Unit and Terminal desc. */
	90	__u8 bInCollection; /* n */
	91	__u8 baInterfaceNr[]; /* [n] */
f2ebf92c BW	92	} __attribute__ ((packed));
f2ebf92c BW	93
512ad27d	94	#define UAC_DT_AC_HEADER_SIZE(n) (8 + (n))
f2ebf92c BW	95
f2ebf92c BW	96	/* As above, but more useful for defining your own descriptors: */
512ad27d LP	97	#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
512ad27d LP	98	struct uac_ac_header_descriptor_##n { \
f2ebf92c BW	99	__u8 bLength; \
	100	__u8 bDescriptorType; \
	101	__u8 bDescriptorSubtype; \
	102	__le16 bcdADC; \
	103	__le16 wTotalLength; \
	104	__u8 bInCollection; \
	105	__u8 baInterfaceNr[n]; \
	106	} __attribute__ ((packed))
	107
c47d7b09	108	/* 4.3.2.1 Input Terminal Descriptor */
512ad27d	109	struct uac_input_terminal_descriptor {
c47d7b09 BW	110	__u8 bLength; /* in bytes: 12 */
	111	__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
	112	__u8 bDescriptorSubtype; /* INPUT_TERMINAL descriptor subtype */
	113	__u8 bTerminalID; /* Constant uniquely terminal ID */
	114	__le16 wTerminalType; /* USB Audio Terminal Types */
	115	__u8 bAssocTerminal; /* ID of the Output Terminal associated */
	116	__u8 bNrChannels; /* Number of logical output channels */
	117	__le16 wChannelConfig;
	118	__u8 iChannelNames;
	119	__u8 iTerminal;
	120	} __attribute__ ((packed));
	121
512ad27d	122	#define UAC_DT_INPUT_TERMINAL_SIZE 12
c47d7b09	123
512ad27d LP	124	/* Terminals - 2.2 Input Terminal Types */
	125	#define UAC_INPUT_TERMINAL_UNDEFINED 0x200
	126	#define UAC_INPUT_TERMINAL_MICROPHONE 0x201
	127	#define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202
	128	#define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203
	129	#define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204
	130	#define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205
	131	#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
c47d7b09 BW	132
c47d7b09 BW	133	/* 4.3.2.2 Output Terminal Descriptor */
512ad27d	134	struct uac_output_terminal_descriptor {
c47d7b09 BW	135	__u8 bLength; /* in bytes: 9 */
	136	__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
	137	__u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */
	138	__u8 bTerminalID; /* Constant uniquely terminal ID */
	139	__le16 wTerminalType; /* USB Audio Terminal Types */
	140	__u8 bAssocTerminal; /* ID of the Input Terminal associated */
	141	__u8 bSourceID; /* ID of the connected Unit or Terminal*/
	142	__u8 iTerminal;
	143	} __attribute__ ((packed));
	144
512ad27d	145	#define UAC_DT_OUTPUT_TERMINAL_SIZE 9
c47d7b09	146
512ad27d LP	147	/* Terminals - 2.3 Output Terminal Types */
	148	#define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300
	149	#define UAC_OUTPUT_TERMINAL_SPEAKER 0x301
	150	#define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302
	151	#define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303
	152	#define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304
	153	#define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305
	154	#define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306
	155	#define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307
c47d7b09 BW	156
c47d7b09 BW	157	/* Set bControlSize = 2 as default setting */
512ad27d	158	#define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2)
c47d7b09 BW	159
c47d7b09 BW	160	/* As above, but more useful for defining your own descriptors: */
512ad27d LP	161	#define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \
512ad27d LP	162	struct uac_feature_unit_descriptor_##ch { \
c47d7b09 BW	163	__u8 bLength; \
	164	__u8 bDescriptorType; \
	165	__u8 bDescriptorSubtype; \
	166	__u8 bUnitID; \
	167	__u8 bSourceID; \
	168	__u8 bControlSize; \
	169	__le16 bmaControls[ch + 1]; \
	170	__u8 iFeature; \
	171	} __attribute__ ((packed))
	172
	173	/* 4.5.2 Class-Specific AS Interface Descriptor */
512ad27d	174	struct uac_as_header_descriptor {
c47d7b09 BW	175	__u8 bLength; /* in bytes: 7 */
	176	__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
	177	__u8 bDescriptorSubtype; /* AS_GENERAL */
	178	__u8 bTerminalLink; /* Terminal ID of connected Terminal */
	179	__u8 bDelay; /* Delay introduced by the data path */
	180	__le16 wFormatTag; /* The Audio Data Format */
	181	} __attribute__ ((packed));
	182
512ad27d	183	#define UAC_DT_AS_HEADER_SIZE 7
c47d7b09	184
512ad27d LP	185	/* Formats - A.1.1 Audio Data Format Type I Codes */
	186	#define UAC_FORMAT_TYPE_I_UNDEFINED 0x0
	187	#define UAC_FORMAT_TYPE_I_PCM 0x1
	188	#define UAC_FORMAT_TYPE_I_PCM8 0x2
	189	#define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3
	190	#define UAC_FORMAT_TYPE_I_ALAW 0x4
	191	#define UAC_FORMAT_TYPE_I_MULAW 0x5
c47d7b09	192
512ad27d	193	struct uac_format_type_i_continuous_descriptor {
c47d7b09 BW	194	__u8 bLength; /* in bytes: 8 + (ns * 3) */
	195	__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
	196	__u8 bDescriptorSubtype; /* FORMAT_TYPE */
	197	__u8 bFormatType; /* FORMAT_TYPE_1 */
	198	__u8 bNrChannels; /* physical channels in the stream */
	199	__u8 bSubframeSize; /* */
	200	__u8 bBitResolution;
	201	__u8 bSamFreqType;
	202	__u8 tLowerSamFreq[3];
	203	__u8 tUpperSamFreq[3];
	204	} __attribute__ ((packed));
	205
512ad27d	206	#define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14
c47d7b09	207
512ad27d	208	struct uac_format_type_i_discrete_descriptor {
c47d7b09 BW	209	__u8 bLength; /* in bytes: 8 + (ns * 3) */
	210	__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
	211	__u8 bDescriptorSubtype; /* FORMAT_TYPE */
	212	__u8 bFormatType; /* FORMAT_TYPE_1 */
	213	__u8 bNrChannels; /* physical channels in the stream */
	214	__u8 bSubframeSize; /* */
	215	__u8 bBitResolution;
	216	__u8 bSamFreqType;
	217	__u8 tSamFreq[][3];
	218	} __attribute__ ((packed));
	219
512ad27d LP	220	#define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \
512ad27d LP	221	struct uac_format_type_i_discrete_descriptor_##n { \
c47d7b09 BW	222	__u8 bLength; \
	223	__u8 bDescriptorType; \
	224	__u8 bDescriptorSubtype; \
	225	__u8 bFormatType; \
	226	__u8 bNrChannels; \
	227	__u8 bSubframeSize; \
	228	__u8 bBitResolution; \
	229	__u8 bSamFreqType; \
	230	__u8 tSamFreq[n][3]; \
	231	} __attribute__ ((packed))
	232
512ad27d	233	#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
c47d7b09	234
512ad27d LP	235	/* Formats - A.2 Format Type Codes */
	236	#define UAC_FORMAT_TYPE_UNDEFINED 0x0
	237	#define UAC_FORMAT_TYPE_I 0x1
	238	#define UAC_FORMAT_TYPE_II 0x2
	239	#define UAC_FORMAT_TYPE_III 0x3
c47d7b09	240
512ad27d	241	struct uac_iso_endpoint_descriptor {
c47d7b09 BW	242	__u8 bLength; /* in bytes: 7 */
	243	__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */
	244	__u8 bDescriptorSubtype; /* EP_GENERAL */
	245	__u8 bmAttributes;
	246	__u8 bLockDelayUnits;
	247	__le16 wLockDelay;
	248	};
512ad27d LP	249	#define UAC_ISO_ENDPOINT_DESC_SIZE 7
	250
	251	#define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01
	252	#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
	253	#define UAC_EP_CS_ATTR_FILL_MAX 0x80
	254
	255	/* A.10.2 Feature Unit Control Selectors */
	256	#define UAC_FU_CONTROL_UNDEFINED 0x00
	257	#define UAC_MUTE_CONTROL 0x01
	258	#define UAC_VOLUME_CONTROL 0x02
	259	#define UAC_BASS_CONTROL 0x03
	260	#define UAC_MID_CONTROL 0x04
	261	#define UAC_TREBLE_CONTROL 0x05
	262	#define UAC_GRAPHIC_EQUALIZER_CONTROL 0x06
	263	#define UAC_AUTOMATIC_GAIN_CONTROL 0x07
	264	#define UAC_DELAY_CONTROL 0x08
	265	#define UAC_BASS_BOOST_CONTROL 0x09
	266	#define UAC_LOUDNESS_CONTROL 0x0a
	267
	268	#define UAC_FU_MUTE (1 << (UAC_MUTE_CONTROL - 1))
	269	#define UAC_FU_VOLUME (1 << (UAC_VOLUME_CONTROL - 1))
	270	#define UAC_FU_BASS (1 << (UAC_BASS_CONTROL - 1))
	271	#define UAC_FU_MID (1 << (UAC_MID_CONTROL - 1))
	272	#define UAC_FU_TREBLE (1 << (UAC_TREBLE_CONTROL - 1))
	273	#define UAC_FU_GRAPHIC_EQ (1 << (UAC_GRAPHIC_EQUALIZER_CONTROL - 1))
	274	#define UAC_FU_AUTO_GAIN (1 << (UAC_AUTOMATIC_GAIN_CONTROL - 1))
	275	#define UAC_FU_DELAY (1 << (UAC_DELAY_CONTROL - 1))
	276	#define UAC_FU_BASS_BOOST (1 << (UAC_BASS_BOOST_CONTROL - 1))
	277	#define UAC_FU_LOUDNESS (1 << (UAC_LOUDNESS_CONTROL - 1))
c47d7b09	278
c3501308 MT	279	#ifdef __KERNEL__
c3501308 MT	280
c47d7b09 BW	281	struct usb_audio_control {
	282	struct list_head list;
	283	const char *name;
	284	u8 type;
	285	int data[5];
	286	int (set)(struct usb_audio_control con, u8 cmd, int value);
	287	int (get)(struct usb_audio_control con, u8 cmd);
	288	};
	289
c47d7b09 BW	290	struct usb_audio_control_selector {
	291	struct list_head list;
	292	struct list_head control;
	293	u8 id;
	294	const char *name;
	295	u8 type;
	296	struct usb_descriptor_header *desc;
	297	};
	298
c3501308 MT	299	#endif /* __KERNEL__ */
c3501308 MT	300
dda43a0e	301	#endif /* __LINUX_USB_AUDIO_H */