1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <sound/info.h>
7 struct media_mixer_ctl
;
9 struct usbmix_connector_map
{
16 struct usb_mixer_interface
{
17 struct snd_usb_audio
*chip
;
18 struct usb_host_interface
*hostif
;
19 struct list_head list
;
20 unsigned int ignore_ctl_error
;
22 /* array[MAX_ID_ELEMS], indexed by unit id */
23 struct usb_mixer_elem_list
**id_elems
;
25 /* the usb audio specification version this interface complies to */
28 /* optional connector delegation map */
29 const struct usbmix_connector_map
*connector_map
;
31 /* Sound Blaster remote control stuff */
32 const struct rc_config
*rc_cfg
;
34 wait_queue_head_t rc_waitq
;
36 struct usb_ctrlrequest
*rc_setup_packet
;
38 struct media_mixer_ctl
*media_mixer_ctl
;
43 void (*private_free
)(struct usb_mixer_interface
*mixer
);
44 void (*private_suspend
)(struct usb_mixer_interface
*mixer
);
47 #define MAX_CHANNELS 16 /* max logical channels */
51 USB_MIXER_INV_BOOLEAN
,
60 typedef void (*usb_mixer_elem_dump_func_t
)(struct snd_info_buffer
*buffer
,
61 struct usb_mixer_elem_list
*list
);
62 typedef int (*usb_mixer_elem_resume_func_t
)(struct usb_mixer_elem_list
*elem
);
64 struct usb_mixer_elem_list
{
65 struct usb_mixer_interface
*mixer
;
66 struct usb_mixer_elem_list
*next_id_elem
; /* list of controls with same id */
67 struct snd_kcontrol
*kctl
;
69 usb_mixer_elem_dump_func_t dump
;
70 usb_mixer_elem_resume_func_t resume
;
73 /* iterate over mixer element list of the given unit id */
74 #define for_each_mixer_elem(list, mixer, id) \
75 for ((list) = (mixer)->id_elems[id]; (list); (list) = (list)->next_id_elem)
76 #define mixer_elem_list_to_info(list) \
77 container_of(list, struct usb_mixer_elem_info, head)
79 struct usb_mixer_elem_info
{
80 struct usb_mixer_elem_list head
;
81 unsigned int control
; /* CS or ICN (high byte) */
82 unsigned int cmask
; /* channel mask bitmap: 0 = master */
83 unsigned int idx_off
; /* Control index offset */
84 unsigned int ch_readonly
;
85 unsigned int master_readonly
;
91 int cache_val
[MAX_CHANNELS
];
97 int snd_usb_create_mixer(struct snd_usb_audio
*chip
, int ctrlif
,
99 void snd_usb_mixer_disconnect(struct usb_mixer_interface
*mixer
);
101 void snd_usb_mixer_notify_id(struct usb_mixer_interface
*mixer
, int unitid
);
103 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info
*cval
,
104 int request
, int validx
, int value_set
);
106 int snd_usb_mixer_add_control(struct usb_mixer_elem_list
*list
,
107 struct snd_kcontrol
*kctl
);
109 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list
*list
,
110 struct usb_mixer_interface
*mixer
,
113 int snd_usb_mixer_vol_tlv(struct snd_kcontrol
*kcontrol
, int op_flag
,
114 unsigned int size
, unsigned int __user
*_tlv
);
117 int snd_usb_mixer_suspend(struct usb_mixer_interface
*mixer
);
118 int snd_usb_mixer_resume(struct usb_mixer_interface
*mixer
, bool reset_resume
);
121 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info
*cval
, int channel
,
122 int index
, int value
);
124 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info
*cval
,
125 int channel
, int index
, int *value
);
127 extern void snd_usb_mixer_elem_free(struct snd_kcontrol
*kctl
);
129 extern const struct snd_kcontrol_new
*snd_usb_feature_unit_ctl
;
131 #endif /* __USBMIXER_H */