Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#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_AUDIO_EDIROL_UA101,

        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 */