1
2#ifndef __USBMIXER_H
3#define __USBMIXER_H
4
5#include <sound/info.h>
6
7struct media_mixer_ctl;
8
9struct usb_mixer_interface {
10 struct snd_usb_audio *chip;
11 struct usb_host_interface *hostif;
12 struct list_head list;
13 unsigned int ignore_ctl_error;
14 struct urb *urb;
15
16 struct usb_mixer_elem_list **id_elems;
17
18
19 int protocol;
20
21
22 const struct rc_config *rc_cfg;
23 u32 rc_code;
24 wait_queue_head_t rc_waitq;
25 struct urb *rc_urb;
26 struct usb_ctrlrequest *rc_setup_packet;
27 u8 rc_buffer[6];
28 struct media_mixer_ctl *media_mixer_ctl;
29
30 bool disconnected;
31};
32
33#define MAX_CHANNELS 16
34
35enum {
36 USB_MIXER_BOOLEAN,
37 USB_MIXER_INV_BOOLEAN,
38 USB_MIXER_S8,
39 USB_MIXER_U8,
40 USB_MIXER_S16,
41 USB_MIXER_U16,
42 USB_MIXER_S32,
43 USB_MIXER_U32,
44};
45
46typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
47 struct usb_mixer_elem_list *list);
48typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem);
49
50struct usb_mixer_elem_list {
51 struct usb_mixer_interface *mixer;
52 struct usb_mixer_elem_list *next_id_elem;
53 struct snd_kcontrol *kctl;
54 unsigned int id;
55 usb_mixer_elem_dump_func_t dump;
56 usb_mixer_elem_resume_func_t resume;
57};
58
59
60#define for_each_mixer_elem(list, mixer, id) \
61 for ((list) = (mixer)->id_elems[id]; (list); (list) = (list)->next_id_elem)
62#define mixer_elem_list_to_info(list) \
63 container_of(list, struct usb_mixer_elem_info, head)
64
65struct usb_mixer_elem_info {
66 struct usb_mixer_elem_list head;
67 unsigned int control;
68 unsigned int cmask;
69 unsigned int idx_off;
70 unsigned int ch_readonly;
71 unsigned int master_readonly;
72 int channels;
73 int val_type;
74 int min, max, res;
75 int dBmin, dBmax;
76 int cached;
77 int cache_val[MAX_CHANNELS];
78 u8 initialized;
79 u8 min_mute;
80 void *private_data;
81};
82
83int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
84 int ignore_error);
85void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
86
87void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
88
89int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
90 int request, int validx, int value_set);
91
92int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
93 struct snd_kcontrol *kctl);
94
95void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
96 struct usb_mixer_interface *mixer,
97 int unitid);
98
99int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
100 unsigned int size, unsigned int __user *_tlv);
101
102#ifdef CONFIG_PM
103int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
104int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
105#endif
106
107int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
108 int index, int value);
109
110int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
111 int channel, int index, int *value);
112
113extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
114
115extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
116
117#endif
118