diff options
Diffstat (limited to 'sound/usb/card.h')
| -rw-r--r-- | sound/usb/card.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h index 6ec95b2edf86..94404c24d240 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -15,6 +15,7 @@ struct audioformat { unsigned int channels; /* # channels */ unsigned int fmt_type; /* USB audio format type (1-3) */ unsigned int fmt_bits; /* number of significant bits */ + unsigned int fmt_sz; /* overall audio sub frame/slot size */ unsigned int frame_size; /* samples per frame for non-audio */ unsigned char iface; /* interface number */ unsigned char altsetting; /* corresponding alternate setting */ @@ -164,6 +165,7 @@ struct snd_usb_substream { unsigned int pkt_offset_adj; /* Bytes to drop from beginning of packets (for non-compliant devices) */ unsigned int stream_offset_adj; /* Bytes to drop from beginning of stream (for non-compliant devices) */ + unsigned int opened:1; /* pcm device opened */ unsigned int running: 1; /* running status */ unsigned int period_elapsed_pending; /* delay period handling */ @@ -207,4 +209,19 @@ struct snd_usb_stream { struct list_head list; }; +struct snd_usb_platform_ops { + void (*connect_cb)(struct snd_usb_audio *chip); + void (*disconnect_cb)(struct snd_usb_audio *chip); + void (*suspend_cb)(struct usb_interface *intf, pm_message_t message); + void (*resume_cb)(struct usb_interface *intf); +}; + +struct snd_usb_stream * +snd_usb_find_suppported_substream(int card_idx, struct snd_pcm_hw_params *params, + int direction); + +int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); +int snd_usb_unregister_platform_ops(void); + +void snd_usb_rediscover_devices(void); #endif /* __USBAUDIO_CARD_H */ |