1 #ifndef __USBMIXER_H 2 #define __USBMIXER_H 3 4 struct usb_mixer_interface { 5 struct snd_usb_audio *chip; 6 struct list_head list; 7 unsigned int ignore_ctl_error; 8 struct urb *urb; 9 /* array[MAX_ID_ELEMS], indexed by unit id */ 10 struct usb_mixer_elem_info **id_elems; 11 12 /* the usb audio specification version this interface complies to */ 13 int protocol; 14 15 /* Sound Blaster remote control stuff */ 16 const struct rc_config *rc_cfg; 17 u32 rc_code; 18 wait_queue_head_t rc_waitq; 19 struct urb *rc_urb; 20 struct usb_ctrlrequest *rc_setup_packet; 21 u8 rc_buffer[6]; 22 23 u8 audigy2nx_leds[3]; 24 u8 xonar_u1_status; 25 }; 26 27 #define MAX_CHANNELS 16 /* max logical channels */ 28 29 enum { 30 USB_MIXER_BOOLEAN, 31 USB_MIXER_INV_BOOLEAN, 32 USB_MIXER_S8, 33 USB_MIXER_U8, 34 USB_MIXER_S16, 35 USB_MIXER_U16, 36 }; 37 38 struct usb_mixer_elem_info { 39 struct usb_mixer_interface *mixer; 40 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */ 41 struct snd_ctl_elem_id *elem_id; 42 unsigned int id; 43 unsigned int control; /* CS or ICN (high byte) */ 44 unsigned int cmask; /* channel mask bitmap: 0 = master */ 45 unsigned int ch_readonly; 46 unsigned int master_readonly; 47 int channels; 48 int val_type; 49 int min, max, res; 50 int dBmin, dBmax; 51 int cached; 52 int cache_val[MAX_CHANNELS]; 53 u8 initialized; 54 }; 55 56 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 57 int ignore_error); 58 void snd_usb_mixer_disconnect(struct list_head *p); 59 60 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 61 62 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 63 int request, int validx, int value_set); 64 void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer); 65 int snd_usb_mixer_activate(struct usb_mixer_interface *mixer); 66 67 int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, 68 struct snd_kcontrol *kctl); 69 70 #endif /* __USBMIXER_H */ 71