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 idx_off; /* Control index offset */ 47 unsigned int ch_readonly; 48 unsigned int master_readonly; 49 int channels; 50 int val_type; 51 int min, max, res; 52 int dBmin, dBmax; 53 int cached; 54 int cache_val[MAX_CHANNELS]; 55 u8 initialized; 56 }; 57 58 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 59 int ignore_error); 60 void snd_usb_mixer_disconnect(struct list_head *p); 61 62 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 63 64 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 65 int request, int validx, int value_set); 66 void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer); 67 int snd_usb_mixer_activate(struct usb_mixer_interface *mixer); 68 69 int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, 70 struct snd_kcontrol *kctl); 71 72 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 73 unsigned int size, unsigned int __user *_tlv); 74 75 #endif /* __USBMIXER_H */ 76