4 #include <sound/info.h>
6 struct usb_mixer_interface {
7 struct snd_usb_audio *chip;
8 struct usb_host_interface *hostif;
10 unsigned int ignore_ctl_error;
12 /* array[MAX_ID_ELEMS], indexed by unit id */
13 struct usb_mixer_elem_list **id_elems;
15 /* the usb audio specification version this interface complies to */
18 /* Sound Blaster remote control stuff */
19 const struct rc_config *rc_cfg;
21 wait_queue_head_t rc_waitq;
23 struct usb_ctrlrequest *rc_setup_packet;
27 #define MAX_CHANNELS 16 /* max logical channels */
31 USB_MIXER_INV_BOOLEAN,
40 typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
41 struct usb_mixer_elem_list *list);
42 typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem);
44 struct usb_mixer_elem_list {
45 struct usb_mixer_interface *mixer;
46 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */
47 struct snd_kcontrol *kctl;
49 usb_mixer_elem_dump_func_t dump;
50 usb_mixer_elem_resume_func_t resume;
53 struct usb_mixer_elem_info {
54 struct usb_mixer_elem_list head;
55 unsigned int control; /* CS or ICN (high byte) */
56 unsigned int cmask; /* channel mask bitmap: 0 = master */
57 unsigned int idx_off; /* Control index offset */
58 unsigned int ch_readonly;
59 unsigned int master_readonly;
65 int cache_val[MAX_CHANNELS];
70 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
72 void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
74 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
76 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
77 int request, int validx, int value_set);
79 int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
80 struct snd_kcontrol *kctl);
82 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
83 struct usb_mixer_interface *mixer,
86 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
87 unsigned int size, unsigned int __user *_tlv);
90 int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
91 int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
94 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
95 int index, int value);
97 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
98 int channel, int index, int *value);
100 extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
102 #endif /* __USBMIXER_H */