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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Daniel Mack3e1aebe2010-03-04 19:46:12 +01002#ifndef __USBMIXER_H
3#define __USBMIXER_H
4
Takashi Iwai3360b842014-11-18 11:47:04 +01005#include <sound/info.h>
6
Daniel Mack7b1eda22010-03-11 21:13:22 +01007struct usb_mixer_interface {
8 struct snd_usb_audio *chip;
Daniel Mack1faa5d02011-08-04 15:56:28 +02009 struct usb_host_interface *hostif;
Daniel Mack7b1eda22010-03-11 21:13:22 +010010 struct list_head list;
11 unsigned int ignore_ctl_error;
12 struct urb *urb;
13 /* array[MAX_ID_ELEMS], indexed by unit id */
Takashi Iwai3360b842014-11-18 11:47:04 +010014 struct usb_mixer_elem_list **id_elems;
Daniel Mack7b1eda22010-03-11 21:13:22 +010015
Daniel Mack23caaf12010-03-11 21:13:25 +010016 /* the usb audio specification version this interface complies to */
17 int protocol;
18
Daniel Mack7b1eda22010-03-11 21:13:22 +010019 /* 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];
Takashi Iwai124751d2017-10-10 14:10:32 +020026
27 bool disconnected;
Daniel Mack7b1eda22010-03-11 21:13:22 +010028};
29
Daniel Mack9e386582011-05-25 09:09:01 +020030#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,
Julian Scheelbc18e312015-08-14 16:14:45 +020039 USB_MIXER_S32,
40 USB_MIXER_U32,
Daniel Mack9e386582011-05-25 09:09:01 +020041};
Daniel Mack7b1eda22010-03-11 21:13:22 +010042
Takashi Iwai3360b842014-11-18 11:47:04 +010043typedef 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 {
Daniel Mack7b1eda22010-03-11 21:13:22 +010048 struct usb_mixer_interface *mixer;
Takashi Iwai3360b842014-11-18 11:47:04 +010049 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */
50 struct snd_kcontrol *kctl;
Daniel Mack7b1eda22010-03-11 21:13:22 +010051 unsigned int id;
Takashi Iwai3360b842014-11-18 11:47:04 +010052 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;
Daniel Mack7b1eda22010-03-11 21:13:22 +010058 unsigned int control; /* CS or ICN (high byte) */
59 unsigned int cmask; /* channel mask bitmap: 0 = master */
Eldad Zack9f814102012-11-28 23:55:35 +010060 unsigned int idx_off; /* Control index offset */
Daniel Macka6a33252010-05-31 13:35:37 +020061 unsigned int ch_readonly;
62 unsigned int master_readonly;
Daniel Mack7b1eda22010-03-11 21:13:22 +010063 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;
Takashi Iwai0f174b32017-08-16 14:18:37 +020070 u8 min_mute;
Chris J Argesf41d6042014-11-12 12:07:00 -060071 void *private_data;
Daniel Mack7b1eda22010-03-11 21:13:22 +010072};
73
Daniel Mack3e1aebe2010-03-04 19:46:12 +010074int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
75 int ignore_error);
Takashi Iwaia6cece92014-10-31 11:24:32 +010076void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer);
Daniel Mack3e1aebe2010-03-04 19:46:12 +010077
Daniel Mack7b1eda22010-03-11 21:13:22 +010078void 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);
Daniel Mack3e1aebe2010-03-04 19:46:12 +010082
Takashi Iwai3360b842014-11-18 11:47:04 +010083int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
Daniel Mackef9d5972011-05-25 09:09:00 +020084 struct snd_kcontrol *kctl);
85
Takashi Iwai3360b842014-11-18 11:47:04 +010086void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
87 struct usb_mixer_interface *mixer,
88 int unitid);
89
Felix Homann285de9c2012-04-23 20:24:24 +020090int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
91 unsigned int size, unsigned int __user *_tlv);
92
Takashi Iwai400362f2014-01-20 16:51:16 +010093#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
Chris J Argeseef90452014-11-12 12:07:01 -060098int 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
Daniel Mack3e1aebe2010-03-04 19:46:12 +0100106#endif /* __USBMIXER_H */