1 #ifndef __USBMIXER_H 2 #define __USBMIXER_H 3 4 struct usb_mixer_interface { 5 struct snd_usb_audio *chip; 6 struct usb_host_interface *hostif; 7 struct list_head list; 8 unsigned int ignore_ctl_error; 9 struct urb *urb; 10 /* array[MAX_ID_ELEMS], indexed by unit id */ 11 struct usb_mixer_elem_info **id_elems; 12 13 /* the usb audio specification version this interface complies to */ 14 int protocol; 15 16 /* Sound Blaster remote control stuff */ 17 const struct rc_config *rc_cfg; 18 u32 rc_code; 19 wait_queue_head_t rc_waitq; 20 struct urb *rc_urb; 21 struct usb_ctrlrequest *rc_setup_packet; 22 u8 rc_buffer[6]; 23 24 u8 audigy2nx_leds[3]; 25 u8 xonar_u1_status; 26 }; 27 28 #define MAX_CHANNELS 16 /* max logical channels */ 29 30 enum { 31 USB_MIXER_BOOLEAN, 32 USB_MIXER_INV_BOOLEAN, 33 USB_MIXER_S8, 34 USB_MIXER_U8, 35 USB_MIXER_S16, 36 USB_MIXER_U16, 37 }; 38 39 struct usb_mixer_elem_info { 40 struct usb_mixer_interface *mixer; 41 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */ 42 struct snd_ctl_elem_id *elem_id; 43 unsigned int id; 44 unsigned int control; /* CS or ICN (high byte) */ 45 unsigned int cmask; /* channel mask bitmap: 0 = master */ 46 unsigned int ch_readonly; 47 unsigned int master_readonly; 48 int channels; 49 int val_type; 50 int min, max, res; 51 int dBmin, dBmax; 52 int cached; 53 int cache_val[MAX_CHANNELS]; 54 u8 initialized; 55 }; 56 57 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 58 int ignore_error); 59 void snd_usb_mixer_disconnect(struct list_head *p); 60 61 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 62 63 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 64 int request, int validx, int value_set); 65 void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer); 66 int snd_usb_mixer_activate(struct usb_mixer_interface *mixer); 67 68 int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, 69 struct snd_kcontrol *kctl); 70 71 #endif /* __USBMIXER_H */ 72