sound/usb/usbaudio.h - arm/linux - Git at Google


            
            #ifndef __USBAUDIO_H

            
            #define __USBAUDIO_H

            
            /*

            
             *   (Tentative) USB Audio Driver for ALSA

            
             *

            
             *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>

            
             *

            
             *

            
             *   This program is free software; you can redistribute it and/or modify

            
             *   it under the terms of the GNU General Public License as published by

            
             *   the Free Software Foundation; either version 2 of the License, or

            
             *   (at your option) any later version.

            
             *

            
             *   This program is distributed in the hope that it will be useful,

            
             *   but WITHOUT ANY WARRANTY; without even the implied warranty of

            
             *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

            
             *   GNU General Public License for more details.

            
             *

            
             *   You should have received a copy of the GNU General Public License

            
             *   along with this program; if not, write to the Free Software

            
             *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

            
             */


            /*

            
             */


            #define USB_SUBCLASS_AUDIO_CONTROL	0x01

            
            #define USB_SUBCLASS_AUDIO_STREAMING	0x02

            
            #define USB_SUBCLASS_MIDI_STREAMING	0x03

            
            #define USB_SUBCLASS_VENDOR_SPEC	0xff


            #define HEADER				0x01

            
            #define INPUT_TERMINAL			0x02

            
            #define OUTPUT_TERMINAL			0x03

            
            #define MIXER_UNIT			0x04

            
            #define SELECTOR_UNIT			0x05

            
            #define FEATURE_UNIT			0x06

            
            #define PROCESSING_UNIT			0x07

            
            #define EXTENSION_UNIT			0x08


            #define AS_GENERAL			0x01

            
            #define FORMAT_TYPE			0x02

            
            #define FORMAT_SPECIFIC			0x03


            #define EP_GENERAL			0x01


            #define MS_GENERAL			0x01

            
            #define MIDI_IN_JACK			0x02

            
            #define MIDI_OUT_JACK			0x03


            /* endpoint attributes */

            
            #define EP_ATTR_MASK			0x0c

            
            #define EP_ATTR_ASYNC			0x04

            
            #define EP_ATTR_ADAPTIVE		0x08

            
            #define EP_ATTR_SYNC			0x0c


            /* cs endpoint attributes */

            
            #define EP_CS_ATTR_SAMPLE_RATE		0x01

            
            #define EP_CS_ATTR_PITCH_CONTROL	0x02

            
            #define EP_CS_ATTR_FILL_MAX		0x80


            /* Audio Class specific Request Codes */


            #define SET_CUR    0x01

            
            #define GET_CUR    0x81

            
            #define SET_MIN    0x02

            
            #define GET_MIN    0x82

            
            #define SET_MAX    0x03

            
            #define GET_MAX    0x83

            
            #define SET_RES    0x04

            
            #define GET_RES    0x84

            
            #define SET_MEM    0x05

            
            #define GET_MEM    0x85

            
            #define GET_STAT   0xff


            /* Terminal Control Selectors */


            #define COPY_PROTECT_CONTROL       0x01


            /* Endpoint Control Selectors */


            #define SAMPLING_FREQ_CONTROL      0x01

            
            #define PITCH_CONTROL              0x02


            /* Format Types */

            
            #define USB_FORMAT_TYPE_I	0x01

            
            #define USB_FORMAT_TYPE_II	0x02

            
            #define USB_FORMAT_TYPE_III	0x03


            /* type I */

            
            #define USB_AUDIO_FORMAT_PCM	0x01

            
            #define USB_AUDIO_FORMAT_PCM8	0x02

            
            #define USB_AUDIO_FORMAT_IEEE_FLOAT	0x03

            
            #define USB_AUDIO_FORMAT_ALAW	0x04

            
            #define USB_AUDIO_FORMAT_MU_LAW	0x05


            /* type II */

            
            #define USB_AUDIO_FORMAT_MPEG	0x1001

            
            #define USB_AUDIO_FORMAT_AC3	0x1002


            /* type III */

            
            #define USB_AUDIO_FORMAT_IEC1937_AC3	0x2001

            
            #define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1	0x2002

            
            #define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT	0x2003

            
            #define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT	0x2004

            
            #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS	0x2005

            
            #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS	0x2006


            /* maximum number of endpoints per interface */

            
            #define MIDI_MAX_ENDPOINTS 2


            /* handling of USB vendor/product ID pairs as 32-bit numbers */

            
            #define USB_ID(vendor, product) (((vendor) << 16) | (product))

            
            #define USB_ID_VENDOR(id) ((id) >> 16)

            
            #define USB_ID_PRODUCT(id) ((u16)(id))


            /*

            
             */


            struct snd_usb_audio {

            
            	int index;

            
            	struct usb_device *dev;

            
            	struct snd_card *card;

            
            	u32 usb_id;

            
            	int shutdown;

            
            	int num_interfaces;


            	struct list_head pcm_list;	/* list of pcm streams */

            
            	int pcm_devs;


            	struct list_head midi_list;	/* list of midi interfaces */

            
            	int next_midi_device;


            	struct list_head mixer_list;	/* list of mixer interfaces */

            
            };


            /*

            
             * Information about devices with broken descriptors

            
             */


            /* special values for .ifnum */

            
            #define QUIRK_NO_INTERFACE		-2

            
            #define QUIRK_ANY_INTERFACE		-1


            enum quirk_type {

            
            	QUIRK_IGNORE_INTERFACE,

            
            	QUIRK_COMPOSITE,

            
            	QUIRK_MIDI_STANDARD_INTERFACE,

            
            	QUIRK_MIDI_FIXED_ENDPOINT,

            
            	QUIRK_MIDI_YAMAHA,

            
            	QUIRK_MIDI_MIDIMAN,

            
            	QUIRK_MIDI_NOVATION,

            
            	QUIRK_MIDI_RAW,

            
            	QUIRK_MIDI_EMAGIC,

            
            	QUIRK_MIDI_CME,

            
            	QUIRK_AUDIO_STANDARD_INTERFACE,

            
            	QUIRK_AUDIO_FIXED_ENDPOINT,

            
            	QUIRK_AUDIO_EDIROL_UA700_UA25,

            
            	QUIRK_AUDIO_EDIROL_UA1000,


            	QUIRK_TYPE_COUNT

            
            };


            struct snd_usb_audio_quirk {

            
            	const char *vendor_name;

            
            	const char *product_name;

            
            	int16_t ifnum;

            
            	uint16_t type;

            
            	const void *data;

            
            };


            /* data for QUIRK_MIDI_FIXED_ENDPOINT */

            
            struct snd_usb_midi_endpoint_info {

            
            	int8_t   out_ep;	/* ep number, 0 autodetect */

            
            	uint8_t  out_interval;	/* interval for interrupt endpoints */

            
            	int8_t   in_ep;

            
            	uint8_t  in_interval;

            
            	uint16_t out_cables;	/* bitmask */

            
            	uint16_t in_cables;	/* bitmask */

            
            };


            /* for QUIRK_MIDI_YAMAHA, data is NULL */


            /* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info

            
             * structure (out_cables and in_cables only) */


            /* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk

            
             * structures, terminated with .ifnum = -1 */


            /* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */


            /* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */


            /* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */


            /* for QUIRK_IGNORE_INTERFACE, data is NULL */


            /* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */


            /* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info

            
             * structure (out_cables and in_cables only) */


            /* for QUIRK_MIDI_CME, data is NULL */


            /*

            
             */


            #define combine_word(s)    ((*s) | ((unsigned int)(s)[1] << 8))

            
            #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))

            
            #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))


            unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);


            void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);

            
            void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);


            int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,

            
            		    __u8 request, __u8 requesttype, __u16 value, __u16 index,

            
            		    void *data, __u16 size, int timeout);


            int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif);

            
            void snd_usb_mixer_disconnect(struct list_head *p);


            int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface,

            
            				  const struct snd_usb_audio_quirk *quirk);

            
            void snd_usbmidi_input_stop(struct list_head* p);

            
            void snd_usbmidi_input_start(struct list_head* p);

            
            void snd_usbmidi_disconnect(struct list_head *p);


            /*

            
             * retrieve usb_interface descriptor from the host interface

            
             * (conditional for compatibility with the older API)

            
             */

            
            #ifndef get_iface_desc

            
            #define get_iface_desc(iface)	(&(iface)->desc)

            
            #define get_endpoint(alt,ep)	(&(alt)->endpoint[ep].desc)

            
            #define get_ep_desc(ep)		(&(ep)->desc)

            
            #define get_cfg_desc(cfg)	(&(cfg)->desc)

            
            #endif


            #ifndef snd_usb_get_speed

            
            #define snd_usb_get_speed(dev) ((dev)->speed)

            
            #endif


            #endif /* __USBAUDIO_H */
	#ifndef __USBAUDIO_H
	#define __USBAUDIO_H
	/*
	* (Tentative) USB Audio Driver for ALSA
	*
	* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
	*
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/


	/*
	*/

	#define USB_SUBCLASS_AUDIO_CONTROL 0x01
	#define USB_SUBCLASS_AUDIO_STREAMING 0x02
	#define USB_SUBCLASS_MIDI_STREAMING 0x03
	#define USB_SUBCLASS_VENDOR_SPEC 0xff

	#define HEADER 0x01
	#define INPUT_TERMINAL 0x02
	#define OUTPUT_TERMINAL 0x03
	#define MIXER_UNIT 0x04
	#define SELECTOR_UNIT 0x05
	#define FEATURE_UNIT 0x06
	#define PROCESSING_UNIT 0x07
	#define EXTENSION_UNIT 0x08

	#define AS_GENERAL 0x01
	#define FORMAT_TYPE 0x02
	#define FORMAT_SPECIFIC 0x03

	#define EP_GENERAL 0x01

	#define MS_GENERAL 0x01
	#define MIDI_IN_JACK 0x02
	#define MIDI_OUT_JACK 0x03

	/* endpoint attributes */
	#define EP_ATTR_MASK 0x0c
	#define EP_ATTR_ASYNC 0x04
	#define EP_ATTR_ADAPTIVE 0x08
	#define EP_ATTR_SYNC 0x0c

	/* cs endpoint attributes */
	#define EP_CS_ATTR_SAMPLE_RATE 0x01
	#define EP_CS_ATTR_PITCH_CONTROL 0x02
	#define EP_CS_ATTR_FILL_MAX 0x80

	/* Audio Class specific Request Codes */

	#define SET_CUR 0x01
	#define GET_CUR 0x81
	#define SET_MIN 0x02
	#define GET_MIN 0x82
	#define SET_MAX 0x03
	#define GET_MAX 0x83
	#define SET_RES 0x04
	#define GET_RES 0x84
	#define SET_MEM 0x05
	#define GET_MEM 0x85
	#define GET_STAT 0xff

	/* Terminal Control Selectors */

	#define COPY_PROTECT_CONTROL 0x01

	/* Endpoint Control Selectors */

	#define SAMPLING_FREQ_CONTROL 0x01
	#define PITCH_CONTROL 0x02

	/* Format Types */
	#define USB_FORMAT_TYPE_I 0x01
	#define USB_FORMAT_TYPE_II 0x02
	#define USB_FORMAT_TYPE_III 0x03

	/* type I */
	#define USB_AUDIO_FORMAT_PCM 0x01
	#define USB_AUDIO_FORMAT_PCM8 0x02
	#define USB_AUDIO_FORMAT_IEEE_FLOAT 0x03
	#define USB_AUDIO_FORMAT_ALAW 0x04
	#define USB_AUDIO_FORMAT_MU_LAW 0x05

	/* type II */
	#define USB_AUDIO_FORMAT_MPEG 0x1001
	#define USB_AUDIO_FORMAT_AC3 0x1002

	/* type III */
	#define USB_AUDIO_FORMAT_IEC1937_AC3 0x2001
	#define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1 0x2002
	#define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT 0x2003
	#define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT 0x2004
	#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS 0x2005
	#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS 0x2006


	/* maximum number of endpoints per interface */
	#define MIDI_MAX_ENDPOINTS 2

	/* handling of USB vendor/product ID pairs as 32-bit numbers */
	#define USB_ID(vendor, product) (((vendor) << 16) \| (product))
	#define USB_ID_VENDOR(id) ((id) >> 16)
	#define USB_ID_PRODUCT(id) ((u16)(id))

	/*
	*/

	struct snd_usb_audio {
	int index;
	struct usb_device *dev;
	struct snd_card *card;
	u32 usb_id;
	int shutdown;
	int num_interfaces;

	struct list_head pcm_list; /* list of pcm streams */
	int pcm_devs;

	struct list_head midi_list; /* list of midi interfaces */
	int next_midi_device;

	struct list_head mixer_list; /* list of mixer interfaces */
	};

	/*
	* Information about devices with broken descriptors
	*/

	/* special values for .ifnum */
	#define QUIRK_NO_INTERFACE -2
	#define QUIRK_ANY_INTERFACE -1

	enum quirk_type {
	QUIRK_IGNORE_INTERFACE,
	QUIRK_COMPOSITE,
	QUIRK_MIDI_STANDARD_INTERFACE,
	QUIRK_MIDI_FIXED_ENDPOINT,
	QUIRK_MIDI_YAMAHA,
	QUIRK_MIDI_MIDIMAN,
	QUIRK_MIDI_NOVATION,
	QUIRK_MIDI_RAW,
	QUIRK_MIDI_EMAGIC,
	QUIRK_MIDI_CME,
	QUIRK_AUDIO_STANDARD_INTERFACE,
	QUIRK_AUDIO_FIXED_ENDPOINT,
	QUIRK_AUDIO_EDIROL_UA700_UA25,
	QUIRK_AUDIO_EDIROL_UA1000,

	QUIRK_TYPE_COUNT
	};

	struct snd_usb_audio_quirk {
	const char *vendor_name;
	const char *product_name;
	int16_t ifnum;
	uint16_t type;
	const void *data;
	};

	/* data for QUIRK_MIDI_FIXED_ENDPOINT */
	struct snd_usb_midi_endpoint_info {
	int8_t out_ep; /* ep number, 0 autodetect */
	uint8_t out_interval; /* interval for interrupt endpoints */
	int8_t in_ep;
	uint8_t in_interval;
	uint16_t out_cables; /* bitmask */
	uint16_t in_cables; /* bitmask */
	};

	/* for QUIRK_MIDI_YAMAHA, data is NULL */

	/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
	* structure (out_cables and in_cables only) */

	/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
	* structures, terminated with .ifnum = -1 */

	/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */

	/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */

	/* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */

	/* for QUIRK_IGNORE_INTERFACE, data is NULL */

	/* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */

	/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
	* structure (out_cables and in_cables only) */

	/* for QUIRK_MIDI_CME, data is NULL */

	/*
	*/

	#define combine_word(s) ((*s) \| ((unsigned int)(s)[1] << 8))
	#define combine_triple(s) (combine_word(s) \| ((unsigned int)(s)[2] << 16))
	#define combine_quad(s) (combine_triple(s) \| ((unsigned int)(s)[3] << 24))

	unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);

	void snd_usb_find_desc(void descstart, int desclen, void *after, u8 dtype);
	void snd_usb_find_csint_desc(void descstart, int desclen, void *after, u8 dsubtype);

	int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
	__u8 request, __u8 requesttype, __u16 value, __u16 index,
	void *data, __u16 size, int timeout);

	int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif);
	void snd_usb_mixer_disconnect(struct list_head *p);

	int snd_usb_create_midi_interface(struct snd_usb_audio chip, struct usb_interface iface,
	const struct snd_usb_audio_quirk *quirk);
	void snd_usbmidi_input_stop(struct list_head* p);
	void snd_usbmidi_input_start(struct list_head* p);
	void snd_usbmidi_disconnect(struct list_head *p);

	/*
	* retrieve usb_interface descriptor from the host interface
	* (conditional for compatibility with the older API)
	*/
	#ifndef get_iface_desc
	#define get_iface_desc(iface) (&(iface)->desc)
	#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
	#define get_ep_desc(ep) (&(ep)->desc)
	#define get_cfg_desc(cfg) (&(cfg)->desc)
	#endif

	#ifndef snd_usb_get_speed
	#define snd_usb_get_speed(dev) ((dev)->speed)
	#endif

	#endif /* __USBAUDIO_H */