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,
38 typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
39 struct usb_mixer_elem_list *list);
40 typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem);
42 struct usb_mixer_elem_list {
43 struct usb_mixer_interface *mixer;
44 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */
45 struct snd_kcontrol *kctl;
47 usb_mixer_elem_dump_func_t dump;
48 usb_mixer_elem_resume_func_t resume;
51 struct usb_mixer_elem_info {
52 struct usb_mixer_elem_list head;
53 unsigned int control; /* CS or ICN (high byte) */
54 unsigned int cmask; /* channel mask bitmap: 0 = master */
55 unsigned int idx_off; /* Control index offset */
56 unsigned int ch_readonly;
57 unsigned int master_readonly;
63 int cache_val[MAX_CHANNELS];
68 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
70 void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
72 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
74 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
75 int request, int validx, int value_set);
77 int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
78 struct snd_kcontrol *kctl);
80 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
81 struct usb_mixer_interface *mixer,
84 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
85 unsigned int size, unsigned int __user *_tlv);
88 int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
89 int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
92 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
93 int index, int value);
95 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
96 int channel, int index, int *value);
98 extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
100 #endif /* __USBMIXER_H */