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 */