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- #ifndef __USBMIXER_H
- #define __USBMIXER_H
- struct usb_mixer_interface {
- struct snd_usb_audio *chip;
- struct usb_host_interface *hostif;
- struct list_head list;
- unsigned int ignore_ctl_error;
- struct urb *urb;
- /* array[MAX_ID_ELEMS], indexed by unit id */
- struct usb_mixer_elem_info **id_elems;
- /* the usb audio specification version this interface complies to */
- int protocol;
- /* Sound Blaster remote control stuff */
- const struct rc_config *rc_cfg;
- u32 rc_code;
- wait_queue_head_t rc_waitq;
- struct urb *rc_urb;
- struct usb_ctrlrequest *rc_setup_packet;
- u8 rc_buffer[6];
- u8 audigy2nx_leds[3];
- u8 xonar_u1_status;
- bool disconnected;
- };
- #define MAX_CHANNELS 16 /* max logical channels */
- enum {
- USB_MIXER_BOOLEAN,
- USB_MIXER_INV_BOOLEAN,
- USB_MIXER_S8,
- USB_MIXER_U8,
- USB_MIXER_S16,
- USB_MIXER_U16,
- };
- struct usb_mixer_elem_info {
- struct usb_mixer_interface *mixer;
- struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
- struct snd_ctl_elem_id *elem_id;
- unsigned int id;
- unsigned int control; /* CS or ICN (high byte) */
- unsigned int cmask; /* channel mask bitmap: 0 = master */
- unsigned int idx_off; /* Control index offset */
- unsigned int ch_readonly;
- unsigned int master_readonly;
- int channels;
- int val_type;
- int min, max, res;
- int dBmin, dBmax;
- int cached;
- int cache_val[MAX_CHANNELS];
- u8 initialized;
- };
- int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
- int ignore_error);
- void snd_usb_mixer_disconnect(struct list_head *p);
- void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
- int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
- int request, int validx, int value_set);
- int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer,
- struct snd_kcontrol *kctl);
- int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
- unsigned int size, unsigned int __user *_tlv);
- #ifdef CONFIG_PM
- int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
- int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
- #endif
- #endif /* __USBMIXER_H */
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