diff options
Diffstat (limited to 'kernel/sound/usb/usbaudio.h')
| -rw-r--r-- | kernel/sound/usb/usbaudio.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/kernel/sound/usb/usbaudio.h b/kernel/sound/usb/usbaudio.h new file mode 100644 index 000000000..91d038043 --- /dev/null +++ b/kernel/sound/usb/usbaudio.h @@ -0,0 +1,118 @@ +#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 + */ + +/* 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; + struct usb_interface *pm_intf; + u32 usb_id; + struct mutex mutex; + struct rw_semaphore shutdown_rwsem; + unsigned int shutdown:1; + unsigned int probing:1; + unsigned int in_pm:1; + unsigned int autosuspended:1; + unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ + + int num_interfaces; + int num_suspended_intf; + + struct list_head pcm_list; /* list of pcm streams */ + struct list_head ep_list; /* list of audio-related endpoints */ + int pcm_devs; + + struct list_head midi_list; /* list of midi interfaces */ + + struct list_head mixer_list; /* list of mixer interfaces */ + + int setup; /* from the 'device_setup' module param */ + bool autoclock; /* from the 'autoclock' module param */ + + struct usb_host_interface *ctrl_intf; /* the audio control interface */ +}; + +#define usb_audio_err(chip, fmt, args...) \ + dev_err(&(chip)->dev->dev, fmt, ##args) +#define usb_audio_warn(chip, fmt, args...) \ + dev_warn(&(chip)->dev->dev, fmt, ##args) +#define usb_audio_info(chip, fmt, args...) \ + dev_info(&(chip)->dev->dev, fmt, ##args) +#define usb_audio_dbg(chip, fmt, args...) \ + dev_dbg(&(chip)->dev->dev, fmt, ##args) + +/* + * 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_AUTODETECT, + QUIRK_MIDI_STANDARD_INTERFACE, + QUIRK_MIDI_FIXED_ENDPOINT, + QUIRK_MIDI_YAMAHA, + QUIRK_MIDI_ROLAND, + QUIRK_MIDI_MIDIMAN, + QUIRK_MIDI_NOVATION, + QUIRK_MIDI_RAW_BYTES, + QUIRK_MIDI_EMAGIC, + QUIRK_MIDI_CME, + QUIRK_MIDI_AKAI, + QUIRK_MIDI_US122L, + QUIRK_MIDI_FTDI, + QUIRK_AUDIO_STANDARD_INTERFACE, + QUIRK_AUDIO_FIXED_ENDPOINT, + QUIRK_AUDIO_EDIROL_UAXX, + QUIRK_AUDIO_ALIGN_TRANSFER, + QUIRK_AUDIO_STANDARD_MIXER, + + 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; +}; + +#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)) + +#endif /* __USBAUDIO_H */ |