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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __USBMIXER_H
3#define __USBMIXER_H
4
5#include <sound/info.h>
6
7struct usb_mixer_interface {
8 struct snd_usb_audio *chip;
9 struct usb_host_interface *hostif;
10 struct list_head list;
11 unsigned int ignore_ctl_error;
12 struct urb *urb;
13 /* array[MAX_ID_ELEMS], indexed by unit id */
14 struct usb_mixer_elem_list **id_elems;
15
16 /* the usb audio specification version this interface complies to */
17 int protocol;
18
19 /* Sound Blaster remote control stuff */
20 const struct rc_config *rc_cfg;
21 u32 rc_code;
22 wait_queue_head_t rc_waitq;
23 struct urb *rc_urb;
24 struct usb_ctrlrequest *rc_setup_packet;
25 u8 rc_buffer[6];
26
27 bool disconnected;
28};
29
30#define MAX_CHANNELS 16 /* max logical channels */
31
32enum {
33 USB_MIXER_BOOLEAN,
34 USB_MIXER_INV_BOOLEAN,
35 USB_MIXER_S8,
36 USB_MIXER_U8,
37 USB_MIXER_S16,
38 USB_MIXER_U16,
39 USB_MIXER_S32,
40 USB_MIXER_U32,
41};
42
43typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
44 struct usb_mixer_elem_list *list);
45typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem);
46
47struct usb_mixer_elem_list {
48 struct usb_mixer_interface *mixer;
49 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */
50 struct snd_kcontrol *kctl;
51 unsigned int id;
52 usb_mixer_elem_dump_func_t dump;
53 usb_mixer_elem_resume_func_t resume;
54};
55
56struct usb_mixer_elem_info {
57 struct usb_mixer_elem_list head;
58 unsigned int control; /* CS or ICN (high byte) */
59 unsigned int cmask; /* channel mask bitmap: 0 = master */
60 unsigned int idx_off; /* Control index offset */
61 unsigned int ch_readonly;
62 unsigned int master_readonly;
63 int channels;
64 int val_type;
65 int min, max, res;
66 int dBmin, dBmax;
67 int cached;
68 int cache_val[MAX_CHANNELS];
69 u8 initialized;
70 u8 min_mute;
71 void *private_data;
72};
73
74int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
75 int ignore_error);
76void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
77
78void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
79
80int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
81 int request, int validx, int value_set);
82
83int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
84 struct snd_kcontrol *kctl);
85
86void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
87 struct usb_mixer_interface *mixer,
88 int unitid);
89
90int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
91 unsigned int size, unsigned int __user *_tlv);
92
93#ifdef CONFIG_PM
94int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
95int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
96#endif
97
98int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
99 int index, int value);
100
101int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
102 int channel, int index, int *value);
103
104extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
105
106#endif /* __USBMIXER_H */
1#ifndef __USBMIXER_H
2#define __USBMIXER_H
3
4#include <sound/info.h>
5
6struct usb_mixer_interface {
7 struct snd_usb_audio *chip;
8 struct usb_host_interface *hostif;
9 struct list_head list;
10 unsigned int ignore_ctl_error;
11 struct urb *urb;
12 /* array[MAX_ID_ELEMS], indexed by unit id */
13 struct usb_mixer_elem_list **id_elems;
14
15 /* the usb audio specification version this interface complies to */
16 int protocol;
17
18 /* Sound Blaster remote control stuff */
19 const struct rc_config *rc_cfg;
20 u32 rc_code;
21 wait_queue_head_t rc_waitq;
22 struct urb *rc_urb;
23 struct usb_ctrlrequest *rc_setup_packet;
24 u8 rc_buffer[6];
25};
26
27#define MAX_CHANNELS 16 /* max logical channels */
28
29enum {
30 USB_MIXER_BOOLEAN,
31 USB_MIXER_INV_BOOLEAN,
32 USB_MIXER_S8,
33 USB_MIXER_U8,
34 USB_MIXER_S16,
35 USB_MIXER_U16,
36 USB_MIXER_S32,
37 USB_MIXER_U32,
38};
39
40typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer,
41 struct usb_mixer_elem_list *list);
42typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem);
43
44struct 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;
48 unsigned int id;
49 usb_mixer_elem_dump_func_t dump;
50 usb_mixer_elem_resume_func_t resume;
51};
52
53struct 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;
60 int channels;
61 int val_type;
62 int min, max, res;
63 int dBmin, dBmax;
64 int cached;
65 int cache_val[MAX_CHANNELS];
66 u8 initialized;
67 void *private_data;
68};
69
70int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
71 int ignore_error);
72void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
73
74void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
75
76int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
77 int request, int validx, int value_set);
78
79int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
80 struct snd_kcontrol *kctl);
81
82void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
83 struct usb_mixer_interface *mixer,
84 int unitid);
85
86int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
87 unsigned int size, unsigned int __user *_tlv);
88
89#ifdef CONFIG_PM
90int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer);
91int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume);
92#endif
93
94int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
95 int index, int value);
96
97int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
98 int channel, int index, int *value);
99
100extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
101
102#endif /* __USBMIXER_H */